DNA Damage News and Research

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Study finds major reason why melanoma is largely resistant to chemotherapy

Researchers with UC Irvine's Chao Family Comprehensive Cancer Center have identified a major reason why melanoma is largely resistant to chemotherapy.

18 Sep 2012

Ageing in neurons follows same rules as in senescing fibroblasts

The ageing process has its roots deep within the cells and molecules that make up our bodies. Experts have previously identified the molecular pathway that react to cell damage and stems the cell's ability to divide, known as cell senescence.

12 Sep 2012

Mammalian target of rapamycin inhibitors can prevent radiation-induced tissue damage

Radiation therapy is one of the most widely used cancer treatments, but it often damages normal tissue and can lead to debilitating conditions. A class of drugs known as mammalian target of rapamycin (mTOR) inhibitors can prevent radiation-induced tissue damage in mice by protecting normal stem cells that are crucial for tissue repair, according to a preclinical study published by Cell Press in the September issue of the journal Cell Stem Cell.

7 Sep 2012

Reduced NF-κB expression linκed to postradiation oral mucosa vulnerability

The fragility of oral mucosa after radiotherapy for oral squamous cell carcinoma may be due to the inhibition of the DNA transcriptor protein nuclear factor κappa-light-chain-enhancer of activated B cells, show study findings.

6 Sep 2012

BioReliance introduces Reconstructed Skin Micronucleus Assay to detect DNA damage

Sigma-Aldrich Corporation today announced that its recent acquisition, BioReliance, the biopharma and early development services business under SAFC, will introduce a new assay to detect DNA damage from products with dermal routes of exposure. The Reconstructed Skin Micronucleus (RSMN) Assay represents the first commercial offering of a Genetic Toxicology assay using three-dimensional tissue models.

5 Sep 2012

Eat your greens for healthy sperm genes

Men who consume a high amount of certain nutrients may produce healthier sperm than men who do not, an effect that appears to be more pronounced in older men, report US researchers.

3 Sep 2012

Healthy intake of micronutrients may boost sperm DNA quality in older men

A new study led by scientists from the U.S. Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) found that a healthy intake of micronutrients is strongly associated with improved sperm DNA quality in older men.

27 Aug 2012

PHF20 transcriptional factor plays a unique role in regulating p53

Researchers at Moffitt Cancer Center and colleagues have identified PHF20, a novel transcriptional factor, and clarified its role in maintaining the stability and transcription of p53, a gene that allows for both normal cell growth and tumor suppression. PHF20, the researchers found, plays a previously unknown and unique role in regulating p53.

24 Aug 2012

Spicy solution for viral infection

Curcumin, the main compound in the spice turmeric, prevents replication of mosquito-borne Rift Valley Fever virus in infected cells, report researchers.

22 Aug 2012

Chemists develop new lab test to examine how DNA damage disrupts protein synthesis

Transcription is a cellular process by which genetic information from DNA is copied to messenger RNA for protein production. But anticancer drugs and environmental chemicals can sometimes interrupt this flow of genetic information by causing modifications in DNA.

22 Aug 2012

ACS National Meeting & Exposition focuses on DNA wires and their potential use in identifying diseases

In a discovery that defies the popular meaning of the word "wire," scientists have found that Mother Nature uses DNA as a wire to detect the constantly occurring genetic damage and mistakes that ― if left unrepaired ― can result in diseases like cancer and underpin the physical and mental decline of aging.

20 Aug 2012

Mechanism for chemotherapy resistance identified

Researchers have identified that chemotherapy induces subsequent treatment resistance through damaging healthy tissue, which in turn secretes novel factors that sustain the growth of residual tumor cells.

15 Aug 2012

Smoking is bad for your sperm

In men with varicocele, smoking alters semen quality and sperm function as well as inducing seminal oxidative stress, report researchers.

13 Aug 2012

Scientists discover how pten gene causes brain changes that lead to autism-like behavior

Scientists affiliated with the UC Davis MIND Institute have discovered how a defective gene causes brain changes that lead to the atypical social behavior characteristic of autism. The research offers a potential target for drugs to treat the condition.

13 Aug 2012

New class of drugs reduces adverse effects of cellular damage from cancer chemotherapy

Chemotherapy kills tumor cells, but it also wreaks havoc on the rest of the body. A team of researchers led by Igor Roninson of the South Carolina College of Pharmacy just reported the discovery of a new class of drugs that reduces the adverse effects of cellular damage from chemotherapy.

8 Aug 2012

Scientists identify key factor that drives resistance to cancer drug

Developing resistance to chemotherapy is a nearly universal, ultimately lethal consequence for cancer patients with solid tumors - such as those of the breast, prostate, lung and colon - that have metastasized, or spread, throughout the body. A team of scientists led by Fred Hutchinson Cancer Research Center has discovered a key factor that drives this drug resistance - information that ultimately may be used to improve the effectiveness of therapy and buy precious time for patients with advanced cancer.

6 Aug 2012

Chk1 gene alone is sufficient to kill cancer cells

Researchers at Case Western Reserve University School of Medicine have discovered a mutant form of the gene, Chk1, that when expressed in cancer cells, permanently stopped their proliferation and caused cell death without the addition of any chemotherapeutic drugs.

1 Aug 2012

Conception plans miscarry with sperm DNA damage

Sperm with damaged DNA are more likely to cause spontaneous pregnancy loss, report researchers.

30 Jul 2012

Roofers have higher PAH blood-levels after 6-hour shift

Roofers and road construction workers who use hot asphalt are exposed to high levels of polycyclic aromatic hydrocarbons (PAHs). A University of Colorado Cancer Center study published this week in the British Medical Journal Open shows that roofers have higher PAH blood-levels after a shift than before and that these high levels of PAHs are linked with increased rates of DNA damage, and potentially with higher cancer risk.

28 Jul 2012

NIH grants aim at creating 3-D tissue chips to help identify drug safety signals

Seventeen National Institutes of Health grants are aimed at creating 3-D chips with living cells and tissues that accurately model the structure and function of human organs such as the lung, liver and heart. Once developed, these tissue chips will be tested with compounds known to be safe or toxic in humans to help identify the most reliable drug safety signals - ultimately advancing research to help predict the safety of potential drugs in a faster, more cost-effective way.

25 Jul 2012