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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).

Computer algorithm traces ancestry using anonymous DNA samples

A group of computer scientists, mathematicians, and biologists from around the world have developed a computer algorithm that can help trace the genetic ancestry of thousands of individuals in minutes, without any prior knowledge of their background.

21 Sep 2007

Cautioned urged on use of personal

Imagine this: you visit your clinician, undergo genetic testing, and then you are handed a miniature hard drive containing your personal genome sequence, which is subsequently uploaded onto publicly accessible databases.

21 Sep 2007

Study looks at mitochondrial variation in sperm traits and sperm competitive ability

University of Nevada, Reno researchers Jeanne and David Zeh of the Department of Biology have received a five-year, $650,000 grant from the National Science Foundation to investigate the effects of natural mitochondrial variation on sperm traits and sperm competitive ability.

20 Sep 2007

Researchers provide genetic associations from a genome-wide scan for cardiovascular disease traits

Researchers from Boston University School of Medicine (BUSM), Boston University School of Public Health (BUSPH), and the National Heart, Lung and Blood Institute (NHLBI), have completed analyses of a genome-wide scan on a group of two generations of participants from the landmark Framingham Heart Study (FHS).

20 Sep 2007

DNA microarray chips improved therapy in some patients with incurable cancer

Like many oncologists, Eric P. Lester, M.D., was faced with a dilemma: seven patients with advanced, incurable cancer, an arsenal of drugs that may or may not help them, and not enough solid proof about treatment efficacy to guide him.

20 Sep 2007

Drug resistance gene has spread from East Coast to Midwest

A resistance gene that allows bacteria to beat an important class of antibiotics has started to appear in microorganisms taken from Midwestern patients, according to researchers at Washington University School of Medicine in St. Louis.

20 Sep 2007

Rapid testing for pre-natal detection of Down syndrome

Scientists in California are reporting an advance toward rapid testing for pre-natal detection of Down syndrome and other birth defects that involve an abnormal number of chromosomes.

18 Sep 2007

Test for lung cancer looks for discomforting quiet among protective genes

When it is quiet – "almost too quiet" – in movies, it is a sign that something is about to go wrong for the good guys.

18 Sep 2007

Re-engineered human T cells effectively target and kill cancerous B cells

Human white blood cells, engineered to recognize other malignant immune cells, could provide a novel therapy for patients with highly lethal B cell cancers such as acute lymphoblastic leukemia (ALL), according to researchers at Memorial Sloan-Kettering Cancer Center (MSKCC).

18 Sep 2007

Liver cancer marker could yield blood test for early detection

In the face of an emerging liver cancer crisis in Asia, researchers at the Chinese University of Hong Kong have developed a test that could help millions.

18 Sep 2007

New DNA technique will speed up chemical compensation claims

A new DNA technique developed by scientists in the U.S. may help prove if people have had their health damaged by exposure to chemicals.

18 Sep 2007

Secrets of protein folding revealed

A team led by biophysicist Jeremy Smith of the University of Tennessee and Oak Ridge National Laboratory (ORNL) has taken a significant step toward unraveling the mystery of how proteins fold into unique, three-dimensional shapes.

18 Sep 2007

Real time footage reveals DNA-enzyme interaction

For the first time scientists have been able to film, in real time, the nanoscale interaction of an enzyme and a DNA strand from an attacking virus.

18 Sep 2007

Scientists learn three-dimensional structure of enzyme in unusual virus

Biologists have determined the three-dimensional structure of an unusual viral enzyme that is required in the assembly of new viruses.

18 Sep 2007

New understanding of gene mutation responsible for fragile X syndrome

Scientists have discovered how the gene mutation responsible for fragile X syndrome - the most common inherited form of mental retardation - alters the way brain cells communicate.

18 Sep 2007

JAK genes and cancer

Cancer-causing genes can work in more powerful and sneaky ways than have been realized.

18 Sep 2007

Genetic lab test for Warfarin sensitivity approved by FDA

The U.S. Food and Drug Administration today cleared for marketing a new genetic test that will help physicians assess whether a patient may be especially sensitive to the blood-thinning drug warfarin (Coumadin), which is used to prevent potentially fatal clots in blood vessels.

18 Sep 2007

The importance of gene regulation for common human disease

A new study published in Nature Genetics on Sunday 16 September 2007 show that common, complex diseases are more likely to be due to genetic variation in regions that control activity of genes, rather than in the regions that specify the protein code.

17 Sep 2007

Scientists synthesize DNA-based memory loop in yeast cells

Harvard Medical School researchers have successfully synthesized a DNA-based memory loop in yeast cells, findings that mark a significant step forward in the emerging field of synthetic biology.

17 Sep 2007

Powerful new discovery method speeds up gene discovery

Scientists will be able to pinpoint genetic causes of human diseases faster than ever thanks to a powerful new discovery method unveiled by the Southwest Foundation for Biomedical Research (SFBR) and an international team of researchers.

17 Sep 2007