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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).

New gene therapy can nearly eliminate arthritis pain

Early-stage research has found that a new gene therapy can nearly eliminate arthritis pain, and significantly reduce long-term damage to the affected joints, according to a study published today in the journal Arthritis and Rheumatism.

28 May 2007

Detailed portrait of 700 proteins that help maintain DNA integrity

Cells have the remarkable ability to keep track of their genetic contents and -- when things go wrong, to step in and repair the damage before cancer or another life-threatening condition develops.

28 May 2007

Genome detectives discover four more breast cancer genes

An international team of scientists say they have identified another four genes that increase a woman's likelihood of developing breast cancer.

28 May 2007

Scientists 'home in' on new breast cancer genes

Cancer Research UK scientists have isolated five regions of the genome containing genes which can increase a woman's risk of developing breast cancer, reveals a major international study published online in Nature.

27 May 2007

MicroRNAs may increase cancer susceptibility

New evidence indicates that small pieces of noncoding genetic material known as microRNAs (miRNAs) might influence cancer susceptibility.

24 May 2007

Groundbreaking research on type 1 congenital myotonic dystrophy

Each year, the parents of an estimated one in 20,000 newborns are shocked to learn their child has type 1 congenital myotonic dystrophy (CDM1), a progressive and crippling genetic disorder.

24 May 2007

Peering into the body and visualizing its molecular secrets one step closer to reality

Peering into the body and visualizing its molecular secrets, once the stuff of science fiction, is one step closer to reality with a study from researchers at the Stanford University School of Medicine and the University of California, San Diego School of Medicine.

22 May 2007

Brca2 gene prevents medulloblastoma

Investigators at St. Jude Children's Research Hospital have gained some of the first major insights into how certain genes known to prevent cancer also guide the normal development of the nervous system before birth and during infancy by repairing DNA damage.

22 May 2007

MIT researchers uncover surprising difference in gene regulation in mouse and human liver cells

Scientists often study mice as a model for human biology and disease, because their basic biological processes are assumed to be essentially the same as those of humans.

22 May 2007

Biologist hopes mosquito can break viral chain

Most people do their best to avoid mosquitoes. But this summer Rollie Clem will play the wary host to his own homegrown swarm of Aedes aegypti, the yellow fever mosquito. He's made a room ready for them, and even a menu.

22 May 2007

Decoding gene expression in cancer tumors using noninvasive imaging

By correlating images of cancerous liver tissue with gene expression patterns, a research team led by a radiologist at the University of California, San Diego (UCSD) School of Medicine has developed tools that may some day allow physicians to view a CT image of a cancer tumor and discern its genetic activity.

22 May 2007

Caspase-14 protein protects skin against UVB and dehydration

Ultraviolet rays can be harmful to our skin and pave the way to the onset of skin cancers.

22 May 2007

Genes add up risk of autoimmune disease

Geneticists have identified a link between the number of copies of a specific gene an individual has and their susceptibility to autoimmune diseases like lupus.

22 May 2007

Suicide gene therapy kills bowel cancer cells

An innovative type of gene therapy has for the first time succeeded in making bowel cancer cells commit suicide, according to a report in Cancer Research.

20 May 2007

Newly discovered WU virus may explain some respiratory infections

An ongoing effort to identify the microorganisms that make us sick has discovered a new virus potentially linked to unexplained respiratory infections.

18 May 2007

Study breaks link between lycopene and prostate cancer prevention

Tomatoes might be nutritious and tasty, but don't count on them to prevent prostate cancer.

18 May 2007

Latent memory of cells comes to life

New Danish research has examined the mechanisms behind latent cell memory, which can come to life and cause previously non-existent capacities suddenly to appear.

18 May 2007

New computational system identifies viruses and bacteria

Now that the genome sequences of hundreds of bacteria and viruses are known, we can design tests that will rapidly detect the presence of these species based solely on their DNA.

18 May 2007

First draft of the genome sequence of Aedes aegypti mosquito

Developing new strategies to prevent and control yellow fever and dengue fever has become more possible with the completion of the first draft of the genome sequence of Aedes aegypti mosquito by scientists led by Vishvanath Nene at The Institute for Genomic Research (TIGR) and David Severson at the University of Notre Dame.

18 May 2007

Some NSAIDs may be better suited to treating cancer

Until recently, nonsteroidal anti-inflammatory drugs (NSAIDs) like aspirin and celecoxib (sold as Celebrex), were being hailed as promising cancer prevention drugs.

18 May 2007