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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).

SMO and AKT1 mutations appear to drive about 15% of meningiomas

Large-scale genomic sequencing has revealed two DNA mutations that appear to drive about 15 percent of brain tumors known as meningiomas, a finding that could lead to the first effective drug treatments for the tumors, report scientists from Dana-Farber Cancer Institute and the Broad Institute.

23 Jan 2013

Novel way to engineer specialized immune cells targeted by the AIDS virus

Researchers at the Stanford University School of Medicine have found a novel way to engineer key cells of the immune system so they remain resistant to infection with HIV, the virus that causes AIDS.

23 Jan 2013

SV Bio, Mayo Clinic partner on whole genome diagnostics and interpretation

Mayo Clinic and Silicon Valley Biosystems (SV Bio) today announced a strategic collaboration for whole genome diagnostics and interpretation at the Mayo Clinic Center for Individualized Medicine and Mayo Medical Laboratories.

23 Jan 2013

Very low levels of BPS can disrupt natural estrogen hormone actions

A few years ago, manufacturers of water bottles, food containers, and baby products had a big problem. A key ingredient of the plastics they used to make their merchandise, an organic compound called bisphenol A, had been linked by scientists to diabetes, asthma and cancer and altered prostate and neurological development.

23 Jan 2013

SLU team discovers molecular pathway that contributes to triple-negative breast cancer

In research published in the Jan. 17 issue of The Journal of Cell Biology, a team led by Susana Gonzalo, Ph.D., assistant professor of biochemistry and molecular biology at Saint Louis University, has discovered a molecular pathway that contributes to triple-negative breast cancer, an often deadly and treatment resistant form of cancer that tends to strike younger women.

23 Jan 2013

ParseCNV software can detect disease-causing copy number variations

A novel software tool, developed at The Children's Hospital of Philadelphia, streamlines the detection of disease-causing genetic changes through more sensitive detection methods and by automatically correcting for variations that reduce the accuracy of results in conventional software.

22 Jan 2013

Synthon Biopharmaceuticals announces promising results with its antibody-drug conjugate program

Synthon Biopharmaceuticals, a subsidiary of specialty pharma company Synthon, has reported promising results with its lead program of antibody-drug conjugates (ADCs).

22 Jan 2013

Family members with rare gene mutation at high risk of developing schizophrenia

Johns Hopkins researchers have identified a rare gene mutation in a single family with a high rate of schizophrenia, adding to evidence that abnormal genes play a role in the development of the disease.

22 Jan 2013

Chemical sensitivity of TRPA1 ion channel may boost melanin production

Last year, a team of researchers at Brown University discovered that certain skin cells use a light-sensitive receptor found outside of the eye to sense ultraviolet light and quickly begin pumping out melanin to protect against DNA damage.

22 Jan 2013

Studies suggest a new approach to treating HIV

A team of researchers based at Johns Hopkins has decoded a system that makes certain types of immune cells impervious to HIV infection.

22 Jan 2013

New DNA chip could improve diagnosis and therapeutics of ADHD

Attention Deficit Hyperactivity Disorder (ADHD) is the most common childhood neuropsychiatric disorder. Yet there is currently no tool that will confirm the diagnosis of ADHD. In her thesis entitled "Development of a genotyping system to be applied in Attention Deficit Hyperactivity Disorder and its Pharmacogenetics".

22 Jan 2013

BRCA1-deficient cancer cells take advantage of DNA repair mechanism

Cancer cells are resourceful survivors with plenty of tricks for staying alive. Researchers have uncovered one of these stratagems, showing how cells lacking the tumor suppressor BRCA1 can resume one form of DNA repair, sparing themselves from stagnation or death. The study appears in the January 21st issue of The Journal of Cell Biology.

22 Jan 2013

Novel infertility mechanism suggested in men with metabolic syndrome

Men diagnosed with the metabolic syndrome appear to have reduced fertility potential despite the absence of leucocytospermia, report researchers.

21 Jan 2013

Scientists identify a possible lead in treatment of two childhood leukemia subtypes

Research led by St. Jude Children's Research Hospital scientists has identified a possible lead in treatment of two childhood leukemia subtypes known for their dramatic loss of chromosomes and poor treatment outcomes.

21 Jan 2013

Study refocuses on how neuroblastoma tumors evolve in response to medicine and other factors

An extensive genomic study of the childhood cancer neuroblastoma reinforces the challenges in treating the most aggressive forms of this disease. Contrary to expectations, the scientists found relatively few recurrent gene mutations—mutations that would suggest new targets for neuroblastoma treatment. Instead, say the researchers, they have now refocused on how neuroblastoma tumors evolve in response to medicine and other factors.

21 Jan 2013

Researchers identify clear role for tags in mediating genetic risk for rheumatoid arthritis

In one of the first genome-wide studies to hunt for both genes and their regulatory "tags" in patients suffering from a common disease, researchers have found a clear role for the tags in mediating genetic risk for rheumatoid arthritis (RA), an immune disorder that afflicts an estimated 1.5 million American adults.

21 Jan 2013

G-quadruplexes also exist within the human genome

In 1953, Cambridge researchers Watson and Crick published a paper describing the interweaving 'double helix' DNA structure - the chemical code for all life.

21 Jan 2013

Law banning genetic discrimination doesn't apply to some insurers

NPR examines a key loophole in the law designed to keep health insurers from raising rates or denying coverage because of genetic issues. The law doesn't apply to life, disability or long-term-care insurance.

19 Jan 2013

Stage IV cancer cells even more susceptible to grape seed extract than stage II

When the going gets tough, grape seed extract gets going: A University of Colorado Cancer Center study recently published in the journal Cancer Letters shows that the more advanced are colorectal cancer cells, the more GSE inhibits their growth and survival. On the other end of the disease spectrum, GSE leaves healthy cells alone entirely.

19 Jan 2013

Scientists figure out how to dodge HPV-triggered cancers by vaccination

In 2009, more than 30,000 people in the U.S. learned they had cancer linked to the human papillomavirus, or HPV. This virus is best known for causing cervical cancer, but it's also the culprit behind many cancers of the mouth, throat, anus, and genitals. Unlike many forms of cancer, for which we lack the knowledge and tools to prevent, scientists have figured out how to dodge HPV-triggered cancers — by HPV vaccination.

19 Jan 2013