The Converging Roles of Nucleases and Helicases in Genome Maintenance and the Aging Process

Area of Science:

• Molecular Biology
• Genetics
• Cell Biology

Background:

• Aging is characterized by genomic instability and DNA damage accumulation.
• The DNA damage response (DDR) network preserves genomic integrity and cellular function.
• Nucleases and helicases are critical enzymes within the DDR network.

Purpose of the Study:

• To elucidate the roles of nucleases and helicases in aging and age-related diseases.
• To explore the connection between DNA repair, epigenetics, and stem cell function in aging.
• To identify therapeutic targets within the DDR-aging axis.

Main Methods:

• Analysis of human progeroid syndromes and genetically engineered mouse models.
• Investigation of nucleases and helicases' interaction with the epigenome.
• Examination of stem cell exhaustion and tissue regeneration defects.
• Review of current therapeutic strategies targeting the DDR-aging axis.

Main Results:

• Defects in nucleases and helicases lead to premature aging phenotypes and tissue degeneration.
• Enzyme dysfunction impacts chromatin remodeling, transcriptional regulation, and epigenetic drift.
• Stem cell exhaustion and impaired tissue regeneration contribute to a cycle of aging.
• Therapeutic strategies focus on modulating repair pathways and downstream aging consequences.

Conclusions:

• Nucleases and helicases are essential for genome maintenance and significantly influence aging trajectories.
• Understanding these enzymes' roles provides insights into organismal longevity and age-related diseases.
• Targeting the DDR-aging axis offers potential for therapeutic interventions.