Matthew O'Connor

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RNA and DNA interaction
Researchers have found that bound pieces of RNA and DNA in the cytoplasm of senescent cells encourage these cells to secrete inflammatory factors. When transcription gets sticky As part of the transcription process that produces necessary proteins, RNA must chemically interact with DNA. When it binds to DNA and integrates itself into the genome, it...
Blood vessel
Scientists have targeted the thin fat layer around blood vessels with a transcription inhibitor, reducing symptoms of cardiometabolic disease [1]. When vessels can’t “just relax” Cardiometabolic disease (CMD) – characterized, among other things, by obesity combined with high blood pressure – is one of the largest drivers of cardiovascular death [2]. It does its damage...
Muscle tissue
In Aging Cell, researchers have described the way that antioxidants work against senescence in muscle cells by altering mTOR signaling. Senescent cells don't sense nutrients properly Deregulated Nutrient SensingThe four pathways of nutrient-sensing regulate metabolism and influence aging. The four associated key protein groups are IGF-1, mTOR, sirtuins, and AMPK. We call these proteins “nutrient-sensing”...
Lab mouse facing viewer
In a new study, muscle-targeted viral-vector-based delivery of the protein FGF21 significantly increased median lifespan in male mice and improved many healthspan markers [1]. Control your energy Metabolic dysregulation is a core cause of aging [2]. As animals (and people) age, they tend to gain fat, develop insulin resistance, and run their cellular energy systems...
A team of reviewers has taken a look at the relationship between cancer, cellular senescence, and vascular overgrowth and published this information in Aging Cell. Different gut cancers form through different pathways The authors begin their paper by discussing two cancers that are downstream of inflammatory bowel disease (IBD): colorectal cancer (CRC) [1] and colitis-associated...
Firing neurons
Scientists have “faked” sleep in mice by artificially creating the on/off neuronal firing pattern similar to that seen in non-REM sleep. This produced sleep-like effects, including improved learning memory [1]. Can sleep be emulated? Getting proper amounts and quality of sleep is one of the best things for health and longevity [2], but in modern...