Researcher Knowledge, Attitudes, and Communication Practices for Genomic Data Sharing.

This study examines knowledge, attitudes, and communication practices toward genomic data sharing among principal investigators and research coordinators engaged in cancer and non-cancer studies. We conducted 25 individual semi-structured interviews and conducted a qualitative thematic analysis. Most interviewees had basic knowledge of data sharing requirements, but lacked specific details of recent changes to NIH policy. Principal investigators perceived more risks to participants for data sharing than the research coordinators who generally obtained consent. Interviewees perceived a trend toward providing fewer data sharing options to participants in the consent process, and had observed that parents of pediatric patients asked more questions than adult patients. Our findings highlight potential areas for improvement related to data sharing during consent processes.

ATM is a key driver of NF-κB-dependent DNA-damage-induced senescence, stem cell dysfunction and aging.

NF-κB is a transcription factor activated in response to inflammatory, genotoxic and oxidative stress and important for driving senescence and aging. Ataxia-telangiectasia mutated (ATM) kinase, a core component of DNA damage response signaling, activates NF-κB in response to genotoxic and oxidative stress via post-translational modifications. Here we demonstrate that ATM is activated in senescent cells in culture and murine tissues from Ercc1-deficient mouse models of accelerated aging, as well as naturally aged mice. Genetic and pharmacologic inhibition of ATM reduced activation of NF-κB and markers of senescence and the senescence-associated secretory phenotype (SASP) in senescent Ercc1-/- MEFs. Ercc1-/Δ mice heterozygous for Atm have reduced NF-κB activity and cellular senescence, improved function of muscle-derived stem/progenetor cells (MDSPCs) and extended healthspan with reduced age-related pathology especially age-related bone and intervertebral disc pathologies. In addition, treatment of Ercc1-/∆ mice with the ATM inhibitor KU-55933 suppressed markers of senescence and SASP. Taken together, these results demonstrate that the ATM kinase is a major mediator of DNA damage-induced, NF-κB-mediated cellular senescence, stem cell dysfunction and aging and thus represents a therapeutic target to slow the progression of aging.