Genetic Engineering: What is Genetic Engineering?
Written by Patrick Dixon
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Video on Genetic Engineering
Genetic engineering is the alteration of genetic code by artificial means, and is therefore different from traditional selective breeding.
Genetic engineering examples include taking the gene that programs poison in the tail of a scorpion, and combining it with a cabbage. These genetically modified cabbages kill caterpillers because they have learned to grow scorpion poison (insecticide) in their sap.
Genetic engineering also includes insertion of human genes into sheep so that they secrete alpha-1 antitrypsin in their milk - a useful substance in treating some cases of lung disease.
Genetic engineering has created a chicken with four legs and no wings.
Genetic engineering has created a goat with spider genes that creates "silk" in its milk.
Genetic engineering works because there is one language of life: human genes work in bacteria, monkey genes work in mice and earthworms. Tree genes work in bananas and frog genes work in rice. There is no limit in theory to the potential of genetic engineering.
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Genetic Engineering: What is Genetic Engineering?
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Genetic Engineering and Biotechnology – Organic Consumers Association
Cost of GMO Food Labeling
Big Biotech loves to claim that GMO labels on food would be costly and drive up the price of food for consumers. But Joanna Shepherd-Bailey, PhD, and renowned tenured law professor from Emory, has issued a report that shows that GMO labeling would likely result in no increase in consumer costs at all.
New Report by Earth Open Source
However, a large and growing body of scientific and other authoritative evidence shows that these claims are not true. On the contrary, evidence presented in this report indicates that GM crops:
Based on the evidence presented in this report, there is no need to take risks with GM crops when effective, readily available, and sustainable solutions to the problems that GM technology is claimed to address already exist.
Conventional plant breeding, in some cases helped by safe modern technologies like gene mapping and marker assisted selection, continues to outperform GM in producing high-yield, drought-tolerant, and pest- and disease-resistant crops that can meet our present and future food needs.
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Genetic Engineering and Biotechnology - Organic Consumers Association
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Genetic Engineering in Agriculture | Union of Concerned Scientists
Few topics in agriculture are more polarizing than genetic engineering (GE), the process of manipulating an organisms genetic materialusually using genes from other speciesin an effort to produce desired traits such as higher yield or drought tolerance.
GE has been hailed by some as an indispensable tool for solving the worlds food problems, and denounced by others as an example of human overreaching fraught with unknown, potentially catastrophic dangers.
UCS experts analyze the applications of genetic engineering in agricultureparticularly in comparison to other optionsand offer practical recommendations based on that analysis.
Supporters of GE in agriculture point to a multitude of potential benefits of engineered crops, including increased yield, tolerance of drought, reduced pesticide use, more efficient use of fertilizers, and ability to produce drugs or other useful chemicals. UCS analysis shows that actual benefits have often fallen far short of expectations.
While the risks of genetic engineering have sometimes been exaggerated or misrepresented, GE crops do have the potential to cause a variety of health problems and environmental impacts. For instance, they may produce new allergens and toxins, spread harmful traits to weeds and non-GE crops, or harm animals that consume them.
At least one major environmental impact of genetic engineering has already reached critical proportions: overuse of herbicide-tolerant GE crops has spurred an increase in herbicide use and an epidemic of herbicide-resistant "superweeds," which will lead to even more herbicide use.
How likely are other harmful GE impacts to occur? This is a difficult question to answer. Each crop-gene combination poses its own set of risks. While risk assessments are conducted as part of GE product approval, the data are generally supplied by the company seeking approval, and GE companies use their patent rights to exercise tight control over research on their products.
In short, there is a lot we don't know about the risks of GEwhich is no reason for panic, but a good reason for caution.
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Genetic Engineering – BiologyMad
Genetic Engineering
Genetic engineering, also known as recombinant DNA technology, means altering the genes in a living organism to produce a Genetically Modified Organism (GMO) with a new genotype. Various kinds of genetic modification are possible: inserting a foreign gene from one species into another, forming a transgenic organism; altering an existing gene so that its product is changed; or changing gene expression so that it is translated more often or not at all.
Genetic engineering is a very young discipline, and is only possible due to the development of techniques from the 1960s onwards. Watson and Crick have made these techniques possible from our greater understanding of DNA and how it functions following the discovery of its structure in 1953. Although the final goal of genetic engineering is usually the expression of a gene in a host, in fact most of the techniques and time in genetic engineering are spent isolating a gene and then cloning it. This table lists the techniques that we shall look at in detail.
1
cDNA
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Genetic engineering – Wikipedia, the free encyclopedia
Genetic engineering, also called genetic modification, is the direct manipulation of an organism's genome using biotechnology. New DNA may be inserted in the host genome by first isolating and copying the genetic material of interest using molecular cloning methods to generate a DNA sequence, or by synthesizing the DNA, and then inserting this construct into the host organism. Genes may be removed, or "knocked out", using a nuclease. Gene targeting is a different technique that uses homologous recombination to change an endogenous gene, and can be used to delete a gene, remove exons, add a gene, or introduce point mutations.
An organism that is generated through genetic engineering is considered to be a genetically modified organism (GMO). The first GMOs were bacteria in 1973; GM mice were generated in 1974. Insulin-producing bacteria were commercialized in 1982 and genetically modified food has been sold since 1994. Glofish, the first GMO designed as a pet, was first sold in the United States December in 2003.[1]
Genetic engineering techniques have been applied in numerous fields including research, agriculture, industrial biotechnology, and medicine. Enzymes used in laundry detergent and medicines such as insulin and human growth hormone are now manufactured in GM cells, experimental GM cell lines and GM animals such as mice or zebrafish are being used for research purposes, and genetically modified crops have been commercialized.
IUPAC definition
Process of inserting new genetic information into existing cells in order to modify a specific organism for the purpose of changing its characteristics.
Note: Adapted from ref.[2]
[3]
Genetic engineering alters the genetic makeup of an organism using techniques that remove heritable material or that introduce DNA prepared outside the organism either directly into the host or into a cell that is then fused or hybridized with the host.[4] This involves using recombinant nucleic acid (DNA or RNA) techniques to form new combinations of heritable genetic material followed by the incorporation of that material either indirectly through a vector system or directly through micro-injection, macro-injection and micro-encapsulation techniques.
Genetic engineering does not normally include traditional animal and plant breeding, in vitro fertilisation, induction of polyploidy, mutagenesis and cell fusion techniques that do not use recombinant nucleic acids or a genetically modified organism in the process.[4] However the European Commission has also defined genetic engineering broadly as including selective breeding and other means of artificial selection.[5]Cloning and stem cell research, although not considered genetic engineering,[6] are closely related and genetic engineering can be used within them.[7]Synthetic biology is an emerging discipline that takes genetic engineering a step further by introducing artificially synthesized genetic material from raw materials into an organism.[8]
If genetic material from another species is added to the host, the resulting organism is called transgenic. If genetic material from the same species or a species that can naturally breed with the host is used the resulting organism is called cisgenic.[9] Genetic engineering can also be used to remove genetic material from the target organism, creating a gene knockout organism.[10] In Europe genetic modification is synonymous with genetic engineering while within the United States of America it can also refer to conventional breeding methods.[11][12] The Canadian regulatory system is based on whether a product has novel features regardless of method of origin. In other words, a product is regulated as genetically modified if it carries some trait not previously found in the species whether it was generated using traditional breeding methods (e.g., selective breeding, cell fusion, mutation breeding) or genetic engineering.[13][14][15] Within the scientific community, the term genetic engineering is not commonly used; more specific terms such as transgenic are preferred.
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Genetic engineering - Wikipedia, the free encyclopedia
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GeneTests
GeneTests is a medical genetics information resource developed for physicians, genetic counselors, other healthcare providers, and researchers.
GeneTests comprises: A Laboratory Directory of over 600 international laboratories offering molecular genetic testing, biochemical genetic testing, and specialized cytogenetic testing for more than 3000 inherited disorders. A Clinic Directory of over 1000 international genetics clinics providing diagnosis and genetic counseling services to patients and their families with known or suspected inherited disorders.
GeneTests searches retrieve links to GeneReviews chapters and related genetic testing information. Note that GeneReviews are NIH-funded and developed and maintained by the University of Washington, Seattle (see http://www.genereviews.org for more information).
The new GeneTests has an updated look and new search functions. It includes all clinical laboratory test listings and genetics clinics listings posted on the former GeneTests site as of May 23, 2013. It does not currently include the non-disease related testing/services of clinical laboratories, test-specific comments, or research laboratories that were part of the original GeneTests site.
Over time, more information and user-friendly features for laboratories, clinics, and users will be added. We welcome your thoughts and suggestions on how to improve GeneTests. Please email us at GeneTests@genetests.org or fill out our user survey.
To find out more about the new GeneTests, please read this letter by Roberta (Bonnie) Pagon MD, Medical Director, GeneTests.
Use of this website assumes acceptance of the disclaimer.
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GeneTests
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DNA from the Beginning – An animated primer of 75 experiments that …
DNA from the Beginning is organized around key concepts. The science behind each concept is explained by: animation, image gallery, video interviews, problem, biographies, and links. DNAftb blog: It's the season of hibernation, something I've always wished I could do. Oh, to wrap up in a ball, sleep away the winter, and wake to a beautiful spring day like Bambi! Although the thought has always intrigued me, it never really occurred to me what a feat hibernation actually is. It turns out that all of the bears, squirrels, rabbits ... that I thought were just sleeping, are breaking biological laws!! If I was to stay dormant for 5 months, without food or drink and little to no movement in freezing temperatures [...] Feature: We have relaunched the Weed to Wonder site as a flexible "e-book" that can be viewed as a website, an app, or a printable PDF. Mailing List Gene News - Genome hacker uncovers largest-ever family tree Find the DNALC on: Language options:
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CDC Features – Obesity & Genetics – Centers for Disease Control …
Scientists have made great advances in understanding important environmental causes of obesity as well as identifying several genes that might be implicated. Major efforts are now directed toward assessing the interactions of genes and environment in the obesity epidemic.
Obesity results when body fat accumulates over time as a result of a chronic energy imbalance (calories consumed exceed calories expended). Obesity is a major health hazard worldwide and is associated with several relatively common diseases such as diabetes, hypertension, heart disease, and some cancers.
In recent decades, obesity has reached epidemic proportions in populations whose environments offer an abundance of calorie-rich foods and few opportunities for physical activity. Although changes in the genetic makeup of populations occur too slowly to be responsible for this rapid rise in obesity, genes do play a role in the development of obesity. Most likely, genes regulate how our bodies capture, store, and release energy from food. The origin of these genes, however, might not be recent.
Learn more about obesity and genetics.
Any explanation of the obesity epidemic has to include both the role of genetics as well as that of the environment. A commonly quoted genetic explanation for the rapid rise in obesity is the mismatch between todays environment and "energy-thrifty genes" that multiplied in the past under different environmental conditions when food sources were rather unpredictable. In other words, according to the "thrifty genotype" hypothesis, the same genes that helped our ancestors survive occasional famines are now being challenged by environments in which food is plentiful year round.
It has been argued that the thrifty genotype is just part of a wider spectrum of ways in which genes can favor fat accumulation in a given environment. These ways include the drive to overeat (poor regulation of appetite and satiety); the tendency to be sedentary (physically inactive); a diminished ability to use dietary fats as fuel; and an enlarged, easily stimulated capacity to store body fat. Not all people living in industrialized countries with abundant food and reduced physical activity are or will become obese; nor will all obese people have the same body fat distribution or suffer the same health issues. This diversity occurs among groups of the same racial or ethnic background and even within families living in the same environment. The variation in how people respond to the same environmental conditions is an additional indication that genes play a role in the development of obesity. This is consistent with the theory that obesity results from genetic variation interacting with shifting environmental conditions.
The indirect scientific evidence for a genetic basis for obesity comes from a variety of studies. Mostly, this evidence includes studies of resemblance and differences among family members, twins, and adoptees. Another source of evidence includes studies that have found some genes at higher frequencies among the obese (association studies). These investigations suggest that a sizable portion of the weight variation in adults is due to genetic factors. However, identifying these factors has been difficult.
Scientists have made great advances in understanding important environmental causes of obesity as well as identifying several of the many genes that might be implicated. Major efforts are now directed toward assessing the interactions of genes and environment in the obesity epidemic. The translation of these efforts into public health practice, from a genomic point of view, will take time.
Learn more about using family history to promote health.
Fortunately, there is a simple way for public health genomics to start reducing the effects of obesity in populations. It is through the use of family history. Family history reflects genetic susceptibility and environmental exposures shared by close relatives. Health care practitioners can routinely collect family health history to help identify people at high risk of obesity-related disorders such as diabetes, cardiovascular diseases, and some forms of cancer. Weight loss or prevention of excessive weight gains is especially important in this high-risk group. Any health promotion effort to reduce the adverse impact of obesity in populations may be more effective if it directs more intensive lifestyle interventions to high-risk groups (high-risk prevention strategy). However, such strategies should not detract from the population prevention strategy, which recommends that regardless of genetic susceptibility and environmental exposure, all people should follow a healthful diet and incorporate regular physical activity into their daily routine to help reduce the risk of obesity and its associated conditions.
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CDC Features - Obesity & Genetics - Centers for Disease Control ...
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Cellular & Gene Therapy Products – Food and Drug Administration
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The Center for Biologics Evaluation and Research (CBER) regulates cellular therapy products, human gene therapy products, and certain devices related to cell and gene therapy. CBER uses both the Public Health Service Act and the Federal Food Drug and Cosmetic Act as enabling statutes for oversight.
Cellular therapy products include cellular immunotherapies, and other types of both autologous and allogeneic cells for certain therapeutic indications, including adult and embryonic stem cells. Human gene therapy refers to products that introduce genetic material into a persons DNA to replace faulty or missing genetic material, thus treating a disease or abnormal medical condition.
Although some cellular therapy products have been approved, CBER has not yet approved any human gene therapy product for sale. However, the amount of cellular and gene therapy-related research and development occurring in the United States continues to grow at a fast rate. CBER has received many requests from medical researchers and manufacturers to study cellular and gene therapies and to develop cellular and gene therapy products. In addition to regulatory oversight of clinical studies, CBER provides proactive scientific and regulatory advice to medical researchers and manufacturers in the area of novel product development.
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Cellular & Gene Therapy Products - Food and Drug Administration
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D’AGE Sheep Placenta Extract / Stem Cell Therapy – Video
D #39;AGE Sheep Placenta Extract / Stem Cell Therapy
D #39;AGE is one of our most precious project, we created the environment and incorporated sand glass into the visual, all the sand effects details was crafted with a lot of TLC.
By: ExpressoFX
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Hemostemix Hosts Cell Therapy Industry Seminar
Toronto, Canada & Kyriat Weizmann, Israel (PRWEB) October 31, 2013
Hemostemix Ltd. and BioForum have announced a jointly-sponsored symposium entitled Cell Therapy an evolving industry to be held November 4 at the Dan Hotel in Tel Aviv, Israel.
The event will feature invited speakers including Dr. Elmar Burchardt, Pfizers Vice President of Regenerative Medicine and cell therapy executives from Canada, United States, India, and Israel. The seminar will brief attendees on global industry trends, discuss optimal cell therapy product development, review the impact of CROs on clinical trial outcomes, present key elements of cellular product analytics, outline cell therapy business models, and engage in an open dialogue about the potential keys to cell therapy being a pillar of future healthcare.
We are pleased to play a role in hosting an event which highlights the global cell therapy industry, stated Hemostemix President and founder, Dr. Valentin Fulga. With this seminar, and others planned, we want to facilitate an information-exchange and dialogue between investors, clinicians, and scientists that will promote a greater understanding of how cell therapies will shape the future of medicine.
Bioforum is excited to provide what it believes will be an important and useful seminar in this exciting new field of science and medicine, stated Yehudith Wexler, Chairperson of Bioforum. For more information about the seminar, click here.
This seminar is part of a series of presentations intended to introduce the company and its platform technology to a wide audience in the context of the cell therapy industrys progress and maturation. This includes a recent keynote presentation (Synergetic Cell Population a powerful tool for autologous therapies) delivered October 23rd in Orlando, FL and an upcoming presentation (A peripheral blood-derived cellular population can be differentiated into neural like progenitor cells) at the TERMIS-AM 2013 Conference to be held November 10-13in Atlanta, Georgia.
About Hemostemix Ltd
Hemostemix Ltd is a Canadian-Israeli company developing and commercializing innovative blood-derived cell therapies for medical conditions not adequately addressed by current treatments with an operating research, development and manufacturing facility in Kiryat Weizmann Science Park, Ness Ziona. For more information see http://www.hemostemix.com.
About Bioforum
Established in 1998, Bioforum provides a wide range of services in the areas of Education and Training, Clinical Data, Regulatory Submissions and Clinical Supply (inPACK). Bioforum's strategic lines of business combine professional services, process optimization, technology and education. Bioforum maximizes their costumers benefits by providing cost effective outsourcing and consultation services for the pharmaceutical, medical and medical device industries. For more information about Bioforum, see http://www.bioforum.co.il.
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Hemostemix Hosts Cell Therapy Industry Seminar
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Gene testing raises lung cancer hope
30 October 2013 Last updated at 14:39 ET By Helen Briggs BBC News
Offering genetic testing to lung cancer patients can potentially save lives, research suggests.
A study of 5,000 patients found genetic profiling of lung tumours boosted survival rates through better targeting of chemotherapy drugs.
The findings, reported in Science Translational Medicine, pave the way for personalised medicine.
Cancer Research UK said matching patients to a personalised treatment is still in its infancy.
The standard way to diagnose lung cancer is to look at cells from a tumour under the microscope.
On this basis, lung cancer can be classified into different tumour types, which helps doctors make decisions about the best treatment to offer.
However, in recent years scientists have made progress towards understanding how cancer can be better treated by matching drugs to the genetic make-up of a tumour.
A team led by Dr Roman Thomas, of the Max Planck Research Group in Cologne, Germany, carried out genetic testing on lung tumour samples from about 5,000 patients to spot genetic differences in lung cancer cells.
Our findings provide support for broad implementation of genome-based diagnosis of lung cancer
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Texas A&M gene study aimed at enhanced cotton fiber breeding …
Home > Newsroom > Texas A&M gene study aimed at enhanced cotton fiber breeding Texas A&M| October 31, 2013
A new study by Texas A&M University cotton researchers and breeders will take advantage of new high-throughput sequencing technology to rapidly advance cotton genetics research and breeding.
Their goal: maintain U.S. cotton's competitiveness in the world cotton market, according to Dr. Hongbin Zhang, professor of plant genomics and systems biology and director of the Laboratory for Plant Genomics and Molecular Genetics in College Station.
The three-year, $500,000 National Institute for Food and Agriculture-funded study, will be conducted by Zhang, along with Dr. Meiping Zhang, Texas A&M AgriLife Research associate research scientist; Dr. C. Wayne Smith, Texas A&M professor of cotton breeding and soil and crop sciences associate department head, and Dr. Steve Hague, associate professor of cotton genetics and breeding in the Texas A&M AgriLife Research Cotton Improvement Lab.
"Cotton is the leading textile fiber and a major bioenergy oilseed crop in Texas and the U.S., with an annual economic impact of about $120 billion in the U.S.," Zhang said.
"In our previous studies, we have already constructed the first genome-wide physical map of Upland cotton, which accounts for more than 90 percent of the cotton in Texas and the U.S." he said. "We are also using the physical map as a platform to sequence the cotton genome."
Also, they previously developed a population of 1,172 recombinant inbred lines that are essential to fine map the cotton genome and genes of economic importance for fiber and oilseed production, Zhang said.
They phenotyped seven of the traits important for fiber quality and yield in 200 of those lines and their parents using three replicated field trials for three years at College Station. The researchers then sequenced and profiled the gene expressions in the developing fibers of those lines, Zhang said.
"Now we want to develop a new and advanced breeding system in cotton, such as gene-based breeding, where we are selecting the target traits based on the genes controlling the traits, gene activities and gene interaction networks."
The long-term goals are to clone the genes that control all major traits of cotton fiber quality and fiber yield, determine their molecular basis and regulation mechanisms, and develop fiber gene-based toolkits, enabling enhanced cotton fiber breeding, he said.
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Texas Cotton: Gene Study Aimed at Enhanced Fiber Breeding …
A new study by Texas A&M University cotton researchers and breeders will take advantage of new high-throughput sequencing technology to rapidly advance cotton genetics research and breeding.
Their goal: maintain U.S. cottons competitiveness in the world cotton market, according to Dr. Hongbin Zhang, professor of plant genomics and systems biology and director of the Laboratory for Plant Genomics and Molecular Genetics in College Station.
Dr. Hongbin Zhang, Texas A&M University professor of plant genomics, harvests the fibers of the cotton population that they are working on in the project for genetic analysis and mapping of fiber traits. (Texas A&M AgriLife Research photo)
The three-year, $500,000 National Institute for Food and Agriculture-funded study, will be conducted by Zhang, along with Dr. Meiping Zhang, Texas A&M AgriLife Research associate research scientist; Dr. C. Wayne Smith, Texas A&M professor of cotton breeding and soil and crop sciences associate department head, and Dr. Steve Hague, associate professor of cotton genetics and breeding in the Texas A&M AgriLife Research Cotton Improvement Lab.
Cotton is the leading textile fiber and a major bioenergy oilseed crop in Texas and the U.S., with an annual economic impact of about $120 billion in the U.S., Zhang said.
In our previous studies, we have already constructed the first genome-wide physical map of Upland cotton, which accounts for more than 90 percent of the cotton in Texas and the U.S. he said. We are also using the physical map as a platform to sequence the cotton genome.
Also, they previously developed a population of 1,172 recombinant inbred lines that are essential to fine map the cotton genome and genes of economic importance for fiber and oilseed production, Zhang said.
They phenotyped seven of the traits important for fiber quality and yield in 200 of those lines and their parents using three replicated field trials for three years at College Station. The researchers then sequenced and profiled the gene expressions in the developing fibers of those lines, Zhang said.
Now we want to develop a new and advanced breeding system in cotton, such as gene-based breeding, where we are selecting the target traits based on the genes controlling the traits, gene activities and gene interaction networks.
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Gene Testing May Boost Lung Cancer Survival: Study: MedlinePlus
WEDNESDAY, Oct. 30 (HealthDay News) -- Chances of surviving lung cancer longer increase when treatment is personalized based on the genetics of the cancer, German researchers report.
Knowing the tumor's genetic signature can help doctors spot differences in cancer cells that may lead to a more accurate diagnosis and better-targeted therapy, the researchers explained.
"Gene classification and diagnosis has a profound impact on patients' survival," said study co-author Dr. Reinhard Buttner, a professor of pathology at University Hospital Cologne.
"Our data were collected from approximately 5,100 lung cancer patients and show that genotyping of lung cancer doubles overall survival in patients with two specific mutations -- EGFR-mutated and ALK-translocated," Buttner said.
Patients with those mutations who received personalized therapies showed survival advantages ranging somewhere between 12 months and 21 months.
The report was published Oct. 30 in the journal Science Translational Medicine.
The researchers found that although some lung cancer cells look the same under the microscope, they may actually be quite different genetically.
"Systematic profiling of gene mutations in lung cancer allows precise classification and diagnostics and predicts the efficacy of targeted and personalized therapies. Every lung cancer should be analyzed for mutations to find the best therapy," Buttner said.
Surprisingly, looking at two common types of lung cancer -- small-cell and large-cell -- from a genetic perspective actually ended up eliminating large-cell lung cancer as a distinct category, he said.
In addition, genotyping identifies many cancer mutations that might be targeted with therapies in new clinical trials, Buttner said.
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Gene Testing May Boost Lung Cancer Survival: Study: MedlinePlus
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Biomedical Research
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Research study aims to understand inherited lung cancer gene | Reuters
* Reuters is not responsible for the content in this press release.
Wed Oct 30, 2013 5:14pm EDT
INHERIT EGFR study expands to second site
SAN CARLOS, Calif., Oct. 30, 2013 /PRNewswire-USNewswire/ -- A new research study, funded by the Bonnie J. Addario Lung Cancer Foundation (ALCF), is aiming to understand how an inherited gene in some lung cancer patients could serve as an early detection screening for family members.
"We're hoping this study provides new insight for methods to screen for lung cancer in people who might not have otherwise qualified for screening: the family members of lung cancer patients," said Bonnie J. Addario, lung cancer survivor and founder of the ALCF. "And we also hope to show that lung cancer doesn't just affect people who smoke."
The INHERIT (Investigating Hereditary Risk from T790M) research study, facilitated by the Addario Lung Cancer Medical Institute (ALCMI), is the first to apply inherited familial genetics widely used to assess risk for breast and colon cancer to provide insight into lung cancer. Dr. Geoffrey Oxnard and a team of physicians at Dana-Farber/Brigham and Women's Cancer Center in Boston, MA are leading the INHERIT study to understand whether the presence of the T790M gene mutation in lung cancers is associated with an inherited gene alteration. Oxnard's team will also examine whether having the inherited form of T790M raises the risk of lung cancer in patients and families. The ALCMI study was launched at Dana-Farber and has now expanded to include Vanderbilt-Ingram Cancer Center in Nashville, Tenn. No travel is required to participate.
"This is the first time we are using cancer genetics to offer insight into inherited familial genetics. For breast cancer or colon cancer, it is patients with a family history that get evaluated for inherited mutations in cancer risk genes," said Geoffrey Oxnard, MD, the lead researcher on the study. "For lung cancer, we propose that it is patients with specific genetic subtypes of lung cancer, those carrying the EGFR T790M mutation, that need to be evaluated for an inherited mutation in their family."
Ultimately, the study aims to identify individuals and families who may have an increased risk of developing lung cancer so they can work with their physicians to reduce and manage that risk. Understanding lung cancer's underlying biology in high-risk families could also provide unique insight into why the disease develops and determine whether "germline" (inherited) factors may partly explain lung cancer in individuals without apparent carcinogenic association.
"We are funding this study because of our patient first commitment," Addario said, "and with the hope to raise awareness that the risk for lung cancer exists regardless of smoking history. In 2013 alone, 34,000 people who never smoked will be diagnosed with lung cancer. That population of cancer patients, isolated, would represent the seventh leading cancer in the U.S."
The INHERIT study is offered through Dana-Farber/Harvard Cancer Center, Vanderbilt-Ingram Cancer Center, and soon at other ALCMI member institutions in the United States and Europe. It is led by Geoffrey Oxnard, MD at Dana-Farber/Brigham and Women's Cancer Center. Dana-Farber and Vanderbilt are National Cancer Institute-designated Comprehensive Cancer Centers.
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Research study aims to understand inherited lung cancer gene | Reuters
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Genetic Medicine – The University of Chicago Department of Medicine
The Section of Genetic Medicine was created in May 2005 to both build research infrastructure in genetics within the Department of Medicine and to focus translational efforts related to genetics. I am proud to have been chosen to lead this new section. My expertise is in quantitative human genetics with a long-standing research program focused on understanding the genetic component to complex phenotypes, including diabetes (MODY, type 1 diabetes and type 2 diabetes), asthma and related phenotypes, psychiatric disorders (autism, bipolar disorder, obsessive-compulsive disorders, Tourettes Syndrome, and schizophrenia) and speech disorders such as stuttering. Yves Lussier M.D., a talented physician scientist with substantial expertise in medical informatics and bioinformatics, joined the section in January 2006 and is already building his research program. Among his research interests are systems medicine and phenomics. In the summer of 2006, two new faculty will join our section with diverse but complementary research interests in genetic and genomic science.
Among the first of the initiatives in which the Section of Genetic Medicine has contributed in is beginning the Translational Research Initiative of the Department of Medicine (TRIDOM ) sample collections. Protocols have been approved for sample collections in Department of Medicine outpatient clinics, and initial efforts are underway in several of the clinics to collect samples. The early efforts have been very rewarding nearly 70% of patients offered the opportunity to participate in the studies have agreed to do so! If we can continue to achieve high participation rates as we increase the number of clinics in which samples are collected, we will indeed have a very rich sample resource for Department of Medicine scientists to tap for their research needs. Look for more information about TRIDOM protocols and other resources available through the Section of Genetic Medicine on this website in the future.
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Genetic Medicine - The University of Chicago Department of Medicine
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Genetics in Medicine – Nature
Welcome to Genetics in Medicine
Genetics in Medicine, the official journal of the American College of Medical Genetics and Genomics, offers an unprecedented forum for the presentation of innovative, clinically relevant papers in contemporary genetic medicine. Stay tuned for cutting-edge clinical research in areas such as genomics, chromosome abnormalities, metabolic diseases, single gene disorders and genetic aspects of common complex diseases.
Genetics in Medicine has launched a new online submission system. Submit your manuscript here.
Instructions to Authors Here you will find all the information you need to submit your manuscript including details on word limits.
Open Access Genetics in Medicine now offers authors the option to publish their articles with immediate open access upon publication. Find out more from our FAQs page.
Volume 15, No 10 October 2013 ISSN: 1098-3600 EISSN: 1530-0366
2012 Impact Factor 5.560* Rank: 20/161 Genetics & Heredity
Editor-in-Chief: James P. Evans, MD, PhD
*2012 Journal Citation Report (Thomson Reuters, 2013)
Genetics in Medicine now offers authors the option to publish their articles with immediate open access upon publication. Open access articles will also be deposited on PubMed Central at the time of publication and will be freely available immediately. Find out more from our FAQs page.
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Genetics in Medicine - Nature
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Medical genetics – Wikipedia, the free encyclopedia
Medical genetics is the specialty of medicine that involves the diagnosis and management of hereditary disorders. Medical genetics differs from Human genetics in that human genetics is a field of scientific research that may or may not apply to medicine, but medical genetics refers to the application of genetics to medical care. For example, research on the causes and inheritance of genetic disorders would be considered within both human genetics and medical genetics, while the diagnosis, management, and counseling of individuals with genetic disorders would be considered part of medical genetics.
In contrast, the study of typically non-medical phenotypes such as the genetics of eye color would be considered part of human genetics, but not necessarily relevant to medical genetics (except in situations such as albinism). Genetic medicine is a newer term for medical genetics and incorporates areas such as gene therapy, personalized medicine, and the rapidly emerging new medical specialty, predictive medicine.
Medical genetics encompasses many different areas, including clinical practice of physicians, genetic counselors, and nutritionists, clinical diagnostic laboratory activities, and research into the causes and inheritance of genetic disorders. Examples of conditions that fall within the scope of medical genetics include birth defects and dysmorphology, mental retardation, autism, and mitochondrial disorders, skeletal dysplasia, connective tissue disorders, cancer genetics, teratogens, and prenatal diagnosis. Medical genetics is increasingly becoming relevant to many common diseases. Overlaps with other medical specialties are beginning to emerge, as recent advances in genetics are revealing etiologies for neurologic, endocrine, cardiovascular, pulmonary, ophthalmologic, renal, psychiatric, and dermatologic conditions.
In some ways, many of the individual fields within medical genetics are hybrids between clinical care and research. This is due in part to recent advances in science and technology (for example, see the Human genome project) that have enabled an unprecedented understanding of genetic disorders.
Clinical genetics is the practice of clinical medicine with particular attention to hereditary disorders. Referrals are made to genetics clinics for a variety of reasons, including birth defects, developmental delay, autism, epilepsy, short stature, and many others. Examples of genetic syndromes that are commonly seen in the genetics clinic include chromosomal rearrangements, Down syndrome, DiGeorge syndrome (22q11.2 Deletion Syndrome), Fragile X syndrome, Marfan syndrome, Neurofibromatosis, Turner syndrome, and Williams syndrome.
Metabolic (or biochemical) genetics involves the diagnosis and management of inborn errors of metabolism in which patients have enzymatic deficiencies that perturb biochemical pathways involved in metabolism of carbohydrates, amino acids, and lipids. Examples of metabolic disorders include galactosemia, glycogen storage disease, lysosomal storage disorders, metabolic acidosis, peroxisomal disorders, phenylketonuria, and urea cycle disorders.
Cytogenetics is the study of chromosomes and chromosome abnormalities. While cytogenetics historically relied on microscopy to analyze chromosomes, new molecular technologies such as array comparative genomic hybridization are now becoming widely used. Examples of chromosome abnormalities include aneuploidy, chromosomal rearrangements, and genomic deletion/duplication disorders.
Molecular genetics involves the discovery of and laboratory testing for DNA mutations that underlie many single gene disorders. Examples of single gene disorders include achondroplasia, cystic fibrosis, Duchenne muscular dystrophy, hereditary breast cancer (BRCA1/2), Huntington disease, Marfan syndrome, Noonan syndrome, and Rett syndrome. Molecular tests are also used in the diagnosis of syndromes involving epigenetic abnormalities, such as Angelman syndrome, Beckwith-Wiedemann syndrome, Prader-willi syndrome, and uniparental disomy.
Mitochondrial genetics concerns the diagnosis and management of mitochondrial disorders, which have a molecular basis but often result in biochemical abnormalities due to deficient energy production.
There exists some overlap between medical genetic diagnostic laboratories and molecular pathology.
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Medical genetics - Wikipedia, the free encyclopedia
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Pigeon Genetics [06] Grizzle – Video
Pigeon Genetics [06] Grizzle
Common autosomal (co)dominate, Seen in many breeds but not the only way to get white splashed pigeons. (Click #39;Show more #39;) We are NOT professionals or geneti...
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Pigeon Genetics [06] Grizzle - Video
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Genetics – Simple English Wikipedia, the free encyclopedia
Genetics is a discipline of biology.[1] It is the science of heredity. This includes the study of genes, and the inheritance of variation and traits of living organisms.[2][3][4] In the laboratory, genetics proceeds by mating carefully selected organisms, and analysing their offspring. More informally, genetics is the study of how parents pass some of their characteristics to their children. It is an important part of biology, and gives the basic rules on which evolution acts.
The fact that living things inherit traits from their parents has been known since prehistoric times, and used to improve crop plants and animals through selective breeding. However, the modern science of genetics, which seeks to understand the process of inheritance, only began with the work of Gregor Mendel in the mid-nineteenth century.[5] Although he did not know the physical basis for heredity, Mendel observed that organisms inherit traits via discrete units of inheritance, which are now called genes.
Living things are made of millions of tiny self-contained components called cells. Inside of each cell are long and complex molecules called DNA.[6]DNA stores information that tells the cells how to create that living thing. Parts of this information that tell how to make one small part or characteristic of the living thing red hair, or blue eyes, or a tendency to be tall are known as genes.
Every cell in the same living thing has the same DNA, but only some of it is used in each cell. For instance, some genes that tell how to make parts of the liver are switched off in the brain. What genes are used can also change over time. For instance, a lot of genes are used by a child early in pregnancy that are not used later.
A living thing has two copies of each gene, one from its mother, and one from its father.[7] There can be multiple types of each gene, which give different instructions: one version might cause a person to have blue eyes, another might cause them to have brown. These different versions are known as alleles of the gene.
Since a living thing has two copies of each gene, it can have two different alleles of it at the same time. Often, one allele will be dominant, meaning that the living thing looks and acts as if it had only that one allele. The unexpressed allele is called recessive. In other cases, you end up with something in between the two possibilities. In that case, the two alleles are called co-dominant.
Most of the characteristics that you can see in a living thing have multiple genes that influence them. And many genes have multiple effects on the body, because their function will not have the same effect in each tissue. The multiple effects of a single gene is called pleiotropism. The whole set of genes is called the genotype, and the total effect of genes on the body is called the phenotype. These are key terms in genetics.
We know that man started breeding domestic animals from early times, probably before the invention of agriculture. We do not know when heredity was first appreciated as a scientific problem. The Greeks, and most obviously Aristotle, studied living things, and proposed ideas about reproduction and heredity.[8]
Probably the most important idea before Mendel was that of Charles Darwin, whose idea of pangenesis had two parts. The first, that persistent hereditary units were passed on from one generation to another, was quite right. The second was his idea that they were replenished by 'gemmules' from the somatic (body) tissues. This was entirely wrong, and plays no part in science today.[9] Darwin was right about one thing: whatever happens in evolution must happen by means of heredity, and so an accurate science of genetics is fundamental to the theory of evolution. This 'mating' between genetics and evolution took many years to organise. It resulted in the Modern evolutionary synthesis.
The basic rules of genetics were first discovered by a monk named Gregor Mendel in around 1865. For thousands of years, people had already studied how traits are inherited from parents to their children. However, Mendel's work was different because he designed his experiments very carefully.
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Genetics – About.com Biology
Resources and information to help you understand genetics. Find information on genes, chromosomes, reproduction and more.
Genetic Code The genetic code is the information in DNA and RNA that determines amino acid sequences in protein synthesis.
Chromosome Mutation A chromosome mutation causes changes in the structure or number of chromosomes in a cell. These mutations are often caused by errors that occur during the process of cell division or by mutagens.
Gene Mutation A gene mutation is any change that occurs in the DNA. These changes can be beneficial to, have some effect on, or be seriously detrimental to an organism.
Sex-Linked Traits Sex-linked traits originate from genes found on sex chromosomes. Hemophilia is an example of a common sex-linked disorder that is an X-linked recessive trait.
Blood Type The presence or absence of certain identifiers on the surface of red blood cells determine human blood type.
Asexual Reproduction An introduction to the mechanisms of asexual reproduction in animals.
Reproduction in Animals: Sexual Reproduction An introduction to the mechanisms of sexual reproduction in animals.
Sexual Reproduction: Fertilization Information on internal and external modes of fertilization.
African Americans in Science Learn about the contributions that various African American scientists and inventors have made to science.
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Learn.Genetics™
DNA EXTRACTION
DNA is extracted from human cells for a variety of reasons. With a pure sample of DNA you can test a newborn for a genetic disease, analyze forensic evidence, or study a gene involved in cancer. Try this virtual laboratory to perform a cheek swab and extract DNA from human cells.
PCR
PCR is a relatively simple and inexpensive tool that you can use to focus in on a segment of DNA and copy it billions of times over. PCR is used every day to diagnose diseases, identify bacteria and viruses, match criminals to crime scenes, and in many other ways. Step up to the virtual lab bench and see how it works!
Have you ever wondered how scientists work with tiny molecules that they can't see? Here's your chance to try it yourself! Sort and measure DNA strands by running your own gel electrophoresis experiment.
DNA MICROARRAY
DNA microarray analysis is one of the fastest-growing new technologies in the field of genetic research. Scientists are using DNA microarrays to investigate everything from cancer to pest control. Now you can do your own DNA microarray experiment! Here you will use a DNA microarray to investigate the differences between a healthy cell and a cancer cell.
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Learn.Genetics™
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Genetics – Wikipedia, the free encyclopedia
This article is about the general scientific term. For the scientific journal, see Genetics (journal).
Genetics (from Ancient Greek genetikos, "genitive" and that from genesis, "origin"),[1][2][3] a discipline of biology, is the science of genes, heredity, and variation in living organisms.[4][5]
Genetics concerns the process of trait inheritance from parents to offspring, including the molecular structure and function of genes, gene behavior in the context of a cell or organism (e.g. dominance and epigenetics), gene distribution, and variation and change in populations (such as through Genome-Wide Association Studies). Given that genes are universal to living organisms, genetics can be applied to the study of all living systems; including bacteria, plants, animals, and humans. The observation that living things inherit traits from their parents has been used since prehistoric times to improve crop plants and animals through selective breeding[citation needed]. The modern science of genetics, seeking to understand this process, began with the work of Gregor Mendel in the mid-19th century.[6]
Mendel observed that organisms inherit traits by way of discrete 'units of inheritance.' This term, still used today, is a somewhat ambiguous definition of a gene. A more modern working definition of a gene is a portion (or sequence) of DNA that codes for a known cellular function. This portion of DNA is variable, it may be small or large, have a few subregions or many subregions. The word 'Gene' refers to portions of DNA that are required for a single cellular process or single function, more than the word refers to a single tangible item. A quick idiom that is often used (but not always true) is 'one gene, one protein' meaning a singular gene codes for a singular protein type in a cell. Another analogy is that a 'gene' is like a 'sentence' and 'letters' are like 'nucleotides.' A series of nucleotides can be put together without forming a gene (non-coding regions of DNA), like a string of letters can be put together without forming a sentence (babble). Nonetheless, all sentences must have letters, like all genes must have a nucleotides.
The sequence of nucleotides in a gene is read and translated by a cell to produce a chain of amino acids which in turn spontaneously fold into proteins. The order of amino acids in a protein corresponds to the order of nucleotides in the gene. This relationship between nucleotide sequence and amino acid sequence is known as the genetic code. The amino acids in a protein determine how it folds into its unique three-dimensional shape; a structure that is ultimately responsible for the proteins function. Proteins carry out many of the functions needed for cells to live. A change to the DNA in a gene can change a protein's amino acid sequence, thereby changing its shape and function, rendering the protein ineffective or even malignant (see: sickle cell anemia). When a gene change occurs, it is referred to as a mutation.
Although genetics plays a large role in the appearance and behavior of organisms, it is a combination of genetics with the organisms' experiences (aka. environment) that determines the ultimate outcome. Genes may be activated or inactivated, which is determined by a cell's or organism's environment, intracellularly and/or extracellularly. For example, while genes play a role in determining an organism's size, the nutrition and health it experiences after inception also have a large effect.
Although the science of genetics began with the applied and theoretical work of Gregor Mendel in the mid-19th century, other theories of inheritance preceded Mendel. A popular theory during Mendel's time was the concept of blending inheritance: the idea that individuals inherit a smooth blend of traits from their parents.[citation needed] Mendel's work provided examples where traits were definitely not blended after hybridization, showing that traits are produced by combinations of distinct genes rather than a continuous blend. Blending of traits in the progeny is now explained by the action of multiple genes with quantitative effects. Another theory that had some support at that time was the inheritance of acquired characteristics: the belief that individuals inherit traits strengthened by their parents. This theory (commonly associated with Jean-Baptiste Lamarck) is now known to be wrongthe experiences of individuals do not affect the genes they pass to their children,[7] although evidence in the field of epigenetics has revived some aspects of Lamarck's theory.[8] Other theories included the pangenesis of Charles Darwin (which had both acquired and inherited aspects) and Francis Galton's reformulation of pangenesis as both particulate and inherited.[9]
Modern genetics started with Gregor Johann Mendel, a German-Czech Augustinian monk and scientist who studied the nature of inheritance in plants. In his paper "Versuche ber Pflanzenhybriden" ("Experiments on Plant Hybridization"), presented in 1865 to the Naturforschender Verein (Society for Research in Nature) in Brnn, Mendel traced the inheritance patterns of certain traits in pea plants and described them mathematically.[10] Although this pattern of inheritance could only be observed for a few traits, Mendel's work suggested that heredity was particulate, not acquired, and that the inheritance patterns of many traits could be explained through simple rules and ratios.
The importance of Mendel's work did not gain wide understanding until the 1890s, after his death, when other scientists working on similar problems re-discovered his research. William Bateson, a proponent of Mendel's work, coined the word genetics in 1905.[11][12] (The adjective genetic, derived from the Greek word genesis, "origin", predates the noun and was first used in a biological sense in 1860.)[13] Bateson popularized the usage of the word genetics to describe the study of inheritance in his inaugural address to the Third International Conference on Plant Hybridization in London, England, in 1906.[14]
After the rediscovery of Mendel's work, scientists tried to determine which molecules in the cell were responsible for inheritance. In 1911, Thomas Hunt Morgan argued that genes are on chromosomes, based on observations of a sex-linked white eye mutation in fruit flies.[15] In 1913, his student Alfred Sturtevant used the phenomenon of genetic linkage to show that genes are arranged linearly on the chromosome.[16]
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Genetics - Wikipedia, the free encyclopedia
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