DNA Damage News and Research

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Chromatin remodeling complex connected to DNA damage control

When molecular disaster strikes, causing structural damage to DNA, players in two important pathways talk to each other to help contain the wreckage, scientists at The University of Texas M. D. Anderson Cancer Center report in the August edition of Cell.

12 Aug 2007

TRF2 and POT1 proteins found on telomeres control DNA damage response pathways

No sooner had cells evolved linear chromosomes than they had a life-threatening problem to solve.

12 Aug 2007

Light-activated molecules used to induce apoptosis in cancer cells

A key challenge facing doctors as they treat patients suffering from cancer or other diseases resulting from genetic mutations is that the drugs at their disposal often don't discriminate between healthy cells and dangerous ones -- think of the brute-force approach of chemotherapy, for instance.

12 Aug 2007

Mechanistic model of DNA repair

Ionizing radiation, toxic chemicals, and other agents continually damage the body's DNA, threatening life and health: unrepaired DNA can lead to mutations, which in turn can lead to diseases like cancer.

6 Aug 2007

Protein IKKa protects checkpoint gene from chemical shutdown

A protein that is largely absent in one type of skin cancer protects an important gene in a cell's defense against harmful mutations from being silenced, researchers at The University of Texas M. D. Anderson Cancer Center report in the July 20 edition of Molecular Cell.

20 Jul 2007

A suntan is the body's best effort to fend off ultraviolet light

For years, the official word on tanning has been … don't. Health organizations have driven home the message that the sun exposure needed to get a tan increases your chances of getting skin cancer.

16 Jul 2007

Chromosome glue repairs damaged DNA

When a strand of DNA breaks in the body's cells, it normally does not take long until it has been repaired.

16 Jul 2007

Discovery of enzyme critical in DNA replication

In this week's issue of Science, researchers from the National Institute of Environmental Health Sciences (NIEHS) and Umea University in Sweden report an important discovery about a critical new role that an enzyme called DNA polymerase epsilon plays in replicating DNA in higher organisms such as yeast and perhaps even humans.

9 Jul 2007

Protein ATM prevents DNA damage from persisting through generations

A protein long known to be involved in protecting a cell from genetic damage has been found to play an even more important role in protecting the cell's offspring.

29 Jun 2007

Scientists discover role of ataxia telangiectasia mutated protein in DNA repair

Scientists from the National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS), National Cancer Institute (NCI), and Integrative Bioinformatics Inc. have made an important discovery about the role of an enzyme called ataxia telangiectasia mutated protein (ATM) in the body's ability to repair damaged DNA.

28 Jun 2007

Substance from lapacho tree could lead to new lung-cancer treatment

Researchers at UT Southwestern Medical Center have determined how a substance derived from the bark of the South American lapacho tree kills certain kinds of cancer cells, findings that also suggest a novel treatment for the most common type of lung cancer.

26 Jun 2007

DNA repair by Brca2 prevents medulloblastoma

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

23 Jun 2007

Herpes virus hijacks DNA repair process

Scientists probing the details of viral infection have discovered an intriguing surprise: in mice, herpes viruses hijack their host cells' tools for fixing DNA damage and use those tools to enhance their own reproduction.

17 Jun 2007

Deleting gene important in embryo development leads to premature aging in mice

Researchers at the Abramson Family Cancer Research Institute of the University of Pennsylvania have found that deleting a gene important in embryo development leads to premature aging and loss of stem cell reservoirs in adult mice.

8 Jun 2007

Aging stem cells in mice may hold answers to diseases of the aged

As stem cells in the blood grow older, genetic mutations accumulate that could be at the root of blood diseases that strike people as they age, according to work done in mice by researchers at the Stanford University School of Medicine.

8 Jun 2007

Smoking can cause changes in the DNA sequence of sperm cells

The science has long been clear that smoking causes cancer, but new research shows that children could inherit genetic damage from a father who smokes.

3 Jun 2007

New candidate breast-cancer susceptibility gene

Researchers at the Abramson Family Cancer Research Institute of the University of Pennsylvania and the Dana-Farber Cancer Institute describe in this week's issue of Science a new candidate breast-cancer susceptibility gene.

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

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