DNA News and Research

RSS

DNA, or deoxyribonucleic acid, is the hereditary material in humans and almost all other organisms. Nearly every cell in a person’s body has the same DNA. Most DNA is located in the cell nucleus (where it is called nuclear DNA), but a small amount of DNA can also be found in the mitochondria (where it is called mitochondrial DNA or mtDNA).

Scientists challenge theory about why chemotherapy agents target cancer

Challenging a half-century-old theory about why chemotherapy agents target cancer, scientists at Dana-Farber Cancer Institute have devised a test that can predict how effective the drugs will be by determining whether a patient's tumor cells are already "primed" for death.

28 Oct 2011

Scientists describe how protein acts as courier in cell signaling pathways

Normal development, from fertilized egg to adult organism, depends on each cell receiving proper instructions from its environment. In response to such incoming information, receptors on a cell's surface send signals to the nucleus that tweak gene expression and control cellular function.

28 Oct 2011

UCLA professor to receive ATA's Sidney H. Ingbar Distinguished Lectureship Award

The American Thyroid Association's (ATA) Sidney H. Ingbar Distinguished Lectureship Award recognizes outstanding academic achievements in thyroidology. An honorarium is conferred each year at the ATA Annual Meeting to an established investigator who has made major contributions to thyroid-related research over many years.

28 Oct 2011

New discoveries on drug resistance in Leishmania

Two remarkable discoveries were today revealed by researchers into genome analysis of Leishmania parasites. These results uncovered a surprising level of variation at the genome structure level.

28 Oct 2011

New rapid method for detection of BRAF V600E gene in thyroid tissue

During surgical removal of thyroid tissue suspicious for cancer, fast, reliable, and cost-effective techniques are needed to analyze the resected tissue for biomarkers—including BRAF V600E, is a molecular biomarker for papillary thyroid cancer (PTC)—that can confirm the presence and type of cancer cells. Researchers have developed a new, rapid method for direct detection of the BRAF V600E gene in thyroid tissue without the need to purify DNA from tumor cells—high resolution melting analysis.

28 Oct 2011

Intracellular nucleic acid sensors can trigger autoimmune disease

Bruce Beutler, MD, a co-recipient of the 2011 Nobel Prize in Medicine, has coauthored an article describing a novel molecular mechanism that can cause the body to attack itself and trigger an autoimmune disease.

28 Oct 2011

Insight into role of cytokines in autoimmune diseases

Cytokines, a varied group of signaling chemicals in the body, have been described as the software that runs the immune system, but when that software malfunctions, dysregulation of the immune system can result in debilitating autoimmune diseases such as lupus, arthritis, and diabetes. Leading experts in the field of cytokine research present their most up-to-date findings and unique perspectives on the role of cytokines in autoimmune diseases in a special issue of Journal of Interferon & Cytokine Research, a peer-reviewed publication of Mary Ann Liebert, Inc.

28 Oct 2011

Taking regular aspirin halves risk of hereditary cancers

Scientists including those from Queen's University have discovered that taking regular aspirin halves the risk of developing hereditary cancers.

28 Oct 2011

La Jolla Institute becomes 5th participant in novel stem cell research collaboration

The La Jolla Institute for Allergy & Immunology has become the fifth organization in the prestigious Sanford Consortium for Regenerative Medicine, joining colleagues from the Salk Institute for Biological Studies, The Scripps Research Institute, University of California, San Diego and the Sanford-Burnham Medical Research Institute in the first-of-its-kind multi-institutional stem cell research collaboration.

28 Oct 2011

New MRSA strains are not directly descended from old ones: Study

Check into a hospital and you run the risk of infection with a methicillin-resistant strain of the bacterium Staphylococcus aureus, or MRSA. But present day MRSA might have been worse if it had descended directly from a 1950s version of the bug, according to a study co-authored by Barry N. Kreiswirth, PhD, a professor at the Public Health Research Institute of UMDNJ-New Jersey Medical School, and published in the Proceedings of the National Academy of Sciences.

27 Oct 2011

E. coli asparaginase linked to relapses in ALL patients with special form of ATF5 gene

One of the causes of resistance to cancer treatment in children is now beginning to be elucidated. Acute lymphoblastic leukemia patients with a particular form of the ATF5 gene are at higher risk of having a relapse when treated with E. coli asparaginase, a key chemotherapy drug for this type of leukemia.

27 Oct 2011

BROCA test identifies 12 gene mutations linked to ovarian and related cancers

More patients with ovarian carcinoma carry cancer-predisposing mutations, and in more genes, than previously thought.

27 Oct 2011

Clinical and genetic risk factors associated with early stent thrombosis

Patients with certain genes or specific factors related to use of the anti-clotting drug clopidogrel are more likely to experience a blood clot within a coronary stent shortly after placement, according to a study in the October 26 issue of JAMA.

27 Oct 2011

Study: pGJA-P/VAX vaccine shows promise against dental caries

In a report on a preclinical investigation titled "Flagellin Enhances Saliva IgA Response and Protection of Anti-caries DNA Vaccine," lead author Wei Shi, Wuhan Institute of Virology, Chinese Academy of Sciences, and his team of researchers demonstrate that anti-caries DNA vaccines, including pGJA-P/VAX, are promising for preventing dental caries. However, challenges remain because of the low immunogenicity of DNA vaccines.

27 Oct 2011

New genomic approach can trace food-borne bacteria with unprecedented accuracy

With salmonella-tainted ground turkey sickening more than 100 people and listeria-contaminated cantaloupes killing 15 this year, the ability to detect outbreaks of food-borne illness and determine their sources has become a top public health priority.

27 Oct 2011

Scientists studying complete genetic profiles of centenarians to find the secret of longevity

Scientists have announced Wednesday that they would examine some of the oldest citizens with one of the newest scientific tools: whole-genome sequencing, the deciphering of a person’s complete collection of DNA. They speculate that DNA from very old healthy people could offer clues to how they lived so long. And that could one day lead to medicines to help people stay disease-free longer.

27 Oct 2011

VitaYeast project to curb global malnutrition

Any way you slice it, bread that contains critical nutrients could help combat severe malnutrition in impoverished regions. That is the goal of a group of Johns Hopkins University undergraduate students who are using synthetic biology to enhance common yeast so that it yields beta carotene, the orange substance that gives carrots their color. When it's eaten, beta-carotene turns into vitamin A.

27 Oct 2011

Scientists discover gene variants that contribute to early stent thrombosis

In a first-of-its-kind study, researchers from Mount Sinai School of Medicine have discovered several gene variants contributing to early stent thrombosis (ST), a devastating and often deadly complication after coronary stent implantation in people with coronary artery disease.

27 Oct 2011

BGI, UC Davis partner to create new sequencing facility in Sacramento

The University of California, Davis, and BGI, the world's largest genomic institute, based in China, have signed a historic agreement that will change the landscape of genomic sciences in California and the Western states, and foster critical breakthroughs in the areas of food security and human, animal and environmental health.

27 Oct 2011

DNA synbodies, a new class of affinity reagents, gets major NIH boost

An ongoing Arizona State University effort to develop a revolutionary class of reagents that holds great promise for the future of medicine has received a major boost with a three-year, $4 million award from the National Institutes of Health.

24 Oct 2011