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Latest DNA repair Stories

2011-05-05 22:14:54

A new study identifies the mutation that underlies a rare, inherited accelerated-aging disease and provides key insight into normal human aging. The research, published by Cell Press online May 5 in the American Journal of Human Genetics, highlights the importance of a cellular structure called the "nuclear envelope" in the process of aging. "Aging is a very complex process which affects most biological functions of an organism but whose molecular basis remains largely unknown," explains Dr....

2011-05-03 14:52:43

Damage to normal DNA is a hallmark of cancer cells. Although it had previously been known that damage to normal cells is caused by stress to their DNA replication when cancerous cells invade, the molecular basis for this remained unclear. Now, for the first time, researchers at the Hebrew University of Jerusalem have shown that in early cancer development, cells suffer from insufficient building blocks to support normal DNA replication. It is possible to halt this by externally supplying the...

2011-04-20 15:07:24

IDIBELL researchers at UB have tested this molecule antagonist of MDM2, a protein active in brain tumors Researchers of Apoptosis and Cancer Group of the Bellvitge Biomedical Research Institute (IDIBELL) have found that a small molecule, Nutlin-3a, an antagonist of MDM2 protein, stimulates the signalling pathway of another protein, p53. By this way, it induces cell death and senescence (loss of proliferative capacity) in brain cancer, a fact that slows its growth. These results open the door...

2011-04-19 13:30:02

A new study shows how inflammation can help cause cancer. Chronic inflammation due to infection or to conditions such as chronic inflammatory bowel disease is associated with up to 25 percent of all cancers. This study by researchers at the Ohio State University Comprehensive Cancer Center "“ Arthur G. James Cancer Hospital and Richard J. Solove Research Institute (OSUCCC "“ James) found that inflammation stimulates a rise in levels of a molecule called microRNA-155 (miR-155)....

2011-04-11 17:01:57

For years, researchers in genome stability have observed that several neurodegenerative diseases"”including Huntington's disease"”are associated with cell-killing proteins that are created during expansion of a CAG/CTG trinucleotide repeat. In research published in the March 17 online edition of the journal PLoS Genetics, Tufts University biologist Catherine Freudenreich, and then-graduate student Rangapriya Sundararajan show that cell death in yeast can also result from the...

2011-04-05 00:06:37

New findings by Fox Chase Cancer Center researchers link a common variant of the powerful anticancer gene p53 to increased inflammatory responses following DNA damage. The results may help explain why African Americans, who more frequently possess this variant, tend to be more susceptible to certain kinds of inflammation-related diseases and cancers, such as type II diabetes and colorectal cancer. Maureen Murphy, PhD, associate professor at Fox Chase, published the findings in the March issue...

2011-04-04 19:45:14

Scientists from Sylvester Comprehensive Cancer Center at the University of Miami Miller School of Medicine are working on a series of genetic analyses that suggest the underlying differences among racial groups are present not just in tumors, but in normal tissue as well. Lisa Baumbach, Ph.D., associate research professor, and colleagues will present the full study results at the AACR 102nd Annual Meeting 2011, held here April 2-6. "Our group has been working for quite some time on the...

2011-04-02 01:54:49

When cells find themselves in a tight spot, the cell cycle regulator p21 halts the cell cycle, buying cells time to repair the damage, or if all else fails, to initiate programmed cell death. In contrast to other stress-induced genes, which dispense with the regular transcriptional entourage, p21Cip1 still requires SKIP, a transcription elongation factor that also helps with the editing of transcripts, to be expressed, found researchers at the Salk Institute for Biological Studies. In the...

2011-04-01 16:28:05

Soy isoflavones block cancer cells' DNA repair mechanisms while protecting normal tissue A component in soybeans increases radiation's ability to kill lung cancer cells, according to a study published in the April issue of the Journal of Thoracic Oncology, the official monthly journal of the International Association for the Study of Lung Cancer. "To improve radiotherapy for lung cancer cells, we are studying the potential of natural non-toxic components of soybeans, called soy isoflavones,...

2011-04-01 14:55:09

Researchers offer the first evidence that DNA damage can lead to the regulation of inflammatory responses, the body's reaction to injury. The proteins involved in the regulation help protect the body from infection. The study, performed by scientists at the National Institute of Environmental Health Sciences (NIEHS), which is part of the National Institutes of Health, is one of the first studies to come out of the recently established NIEHS Clinical Research Unit (CRU)...


Word of the Day
callithump
  • A somewhat riotous parade, accompanied with the blowing of tin horns, and other discordant noises; also, a burlesque serenade; a charivari.
'Callithump' is a back-formation of 'callithumpian,' a 'fanciful formation' according to the Oxford English Dictionary. However, the English Dialect Dictionary, says 'Gallithumpians' is a Dorset and Devon word from the 1790s that refers to 'a society of radical social reformers' or 'noisy disturbers of elections and meetings.'
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