Tag

Dna Repair

All articles tagged with #dna repair

Bowhead Whale DNA-Repair Protein Points to a 200-Year Human Lifespan
science1 month ago

Bowhead Whale DNA-Repair Protein Points to a 200-Year Human Lifespan

Researchers linked elevated CIRBP activity in the bowhead whale to enhanced DNA repair and reduced inflammation, a mechanism that could underlie its exceptional longevity; boosting CIRBP in fruit flies extended lifespan and stress resistance, suggesting a possible pathway to longer human life—potentially up to about 200 years if replicated in humans.

Hidden Nuclear Metabolism: Enzymes Bound to DNA Reshape Cancer Biology
science1 month ago

Hidden Nuclear Metabolism: Enzymes Bound to DNA Reshape Cancer Biology

Scientists have found more than 200 metabolic enzymes directly attached to human DNA in the nucleus, suggesting a small, tissue- and cancer-specific 'mini-metabolism' that may influence gene regulation, DNA repair, and tumor response to therapy. The enzymes’ nuclear roles appear to differ by cancer type (e.g., oxidative phosphorylation enzymes common in breast but not lung cancer) and some, like IMPDH2, show location-dependent functions, prompting potential new biomarkers and drug targets while many details remain to be clarified.

science1 month ago

RAD51 Paralogs Unite to Scaffold DNA Repair Filaments

Researchers show that all five RAD51 paralogs can assemble into two distinct, ATP-dependent assemblies: a BCDX2-CX3 loader that templates RAD51 filament formation on ssDNA, and a RAD51B-independent DX2-CX3 anchor that caps and stabilizes the filament; together, these modular assemblies define loader vs. anchor roles in homologous recombination and illuminate disease-causing mutations.

Greenland sharks may live for centuries thanks to enhanced DNA repair
science2 months ago

Greenland sharks may live for centuries thanks to enhanced DNA repair

Scientists estimate Greenland sharks can live around 400–500 years and have found that eye tissue remains capable of vision in old age due to heightened DNA repair activity. Genome analysis reveals expanded DNA repair genes and a unique p53 insertion, and their hearts tolerate age-related damage. Researchers caution that this does not imply immediate human health applications or any antiaging use for shark products.

Bowhead whales' DNA repair mechanisms may unlock secrets to longevity
science5 months ago

Bowhead whales' DNA repair mechanisms may unlock secrets to longevity

Scientists studying bowhead whales have identified a protein called CIRBP that helps repair DNA and may contribute to the whale's extraordinary lifespan and resistance to cancer. This discovery could lead to new ways to extend human life and prevent age-related diseases, possibly through lifestyle changes like cold exposure or new therapies targeting DNA repair mechanisms.

Bowhead Whales' Longevity: Insights from DNA Repair and CIRBP Protein
science5 months ago

Bowhead Whales' Longevity: Insights from DNA Repair and CIRBP Protein

Research shows that bowhead whales have enhanced DNA repair mechanisms, particularly in double-strand break repair, and high levels of the protein CIRBP, which contribute to their exceptional lifespan and cancer resistance despite their large size and long life. These findings suggest that improved genome maintenance, rather than increased apoptosis, underpins their longevity and resistance to age-related diseases.

Bowhead Whales' Longevity Offers Clues to Slowing Aging
science5 months ago

Bowhead Whales' Longevity Offers Clues to Slowing Aging

Scientists studying bowhead whales, which can live over 200 years, have identified enhanced DNA repair mechanisms involving the protein CIRBP, which is triggered by cold exposure. These mechanisms may contribute to their exceptional longevity and low cancer rates. Experiments suggest boosting CIRBP in humans could improve DNA repair and potentially slow aging, with ongoing research exploring this possibility.