All articles tagged with #epigenetics
Researchers report FLAV-27, a G9a/EHMT2 inhibitor, epigenetically reprograms neuronal gene expression to combat Alzheimer's pathology; in cell cultures, nematodes, and mice it reduced disease features and restored memory and synaptic function, suggesting a broader upstream approach beyond amyloid and tau. The compound has not yet been tested in humans and would require extensive safety and regulatory steps before trials.
A mouse study maps epigenetic changes in the aging brain, finding widespread loss of DNA methylation, activation of transposons, and chromatin remodeling that disrupts gene regulation, suggesting brain aging arises from a breakdown of epigenetic control.
Japanese researchers studying serial cloning in mice with the epigenetic modifier trichostatin A found that while many late-generation clones were healthy at birth, the lineage eventually hit a hard limit: by the 58th generation the clones survived for only a day. TSA boosted cloning success (about 5.4% at generation 51) compared with 1.6% without it, and over 1,200 clones were produced from a single donor. Each generation accumulated mutations (roughly 70 SNVs and 1.5 structural variants), and in some cases placental abnormalities were corrected in later offspring through sexual reproduction, suggesting that sexual reproduction helps purge deleterious mutations and that indefinite cloning remains biologically unfeasible for now.
Live Science’s interview with Herman Pontzer discusses how humans’ remarkable capacity to adapt to varied environments is our species’ defining strength and driver of global diversity. Pontzer cites local adaptations (like enlarged spleens among the Sama, skin-color variation by latitude, high-altitude physiology) and explains that genetics and environment work together, with epigenetic effects potentially influencing future generations. He also outlines evolutionary mismatches between hunter-gatherer biology and modern, climate-controlled lifestyles, arguing that understanding this multilayered diversity helps counter misinformation and informs debates on health, diet, and vaccines. The conversation aims to equip readers with a toolkit to critically evaluate scientific headlines about the human body and its variation.
University of Barcelona researchers report that FLAV-27, a first-in-class SAM-competitive G9a inhibitor, reverses cognitive deficits in multiple Alzheimer’s disease mouse models by reprogramming neuronal gene activity, a mechanism distinct from beta-amyloid–targeting drugs; the compound is currently in preclinical stages and could represent a disease-modifying approach pending human safety data.
A USC-led study analyzing data from more than 3,600 adults (56+) finds exposure to extreme heat, defined by heat index levels from the National Weather Service, accelerates biological aging as measured by epigenetic clocks. Participants in hot, humid regions showed up to about 14 extra months of aging, and clocks indicated 1–6 years of accelerated aging, with older adults at higher risk; findings underscore potential health and policy implications amid warming climates.
A large randomized COSMOS trial found that a daily multivitamin slowed two epigenetic aging clocks over two years (about 2.7–5.1 months of aging delay), with the greatest benefit seen in participants biologically older than their actual age; experts caution that slowing epigenetic clocks may not translate to fewer age-related diseases, and long-term health outcomes require more research.
A single in utero exposure to the fungicide vinclozolin in rats increased disease risk across 20 generations, with severity climbing in later generations, implying heritable epigenetic changes that could illuminate the roots of chronic diseases in humans and inform preventative medicine; study published in the Proceedings of the National Academy of Sciences.
A two-year, randomized COSMOS trial found that taking a daily multivitamin slowed certain epigenetic clocks of ageing in people around 70, reducing biological age by about four months versus non-users; the effect was more pronounced in individuals with accelerated ageing and was observed in two of five DNA methylation clocks linked to mortality risk. While promising, the authors emphasize the effects are small and do not yet imply improved clinical outcomes.
A King's College London study found higher blood theobromine levels, a compound in dark chocolate and coffee, are linked to slower biological aging markers (GrimAge and DNAmTL) in about 1,600 adults, even after accounting for caffeine; the signal is strongest among former-smokers and appears independent of caffeine. However, the study is observational and cannot prove causation, so researchers advocate focusing on overall diet quality rather than chasing a single nutrient, while noting dark chocolate’s sugar and fat content and the importance of modest portions.
A Science Signaling study shows acetate, a by-product of metabolism, enhances long-term memory in female mice by promoting histone acetylation and upregulating learning-related genes in the dorsal hippocampus; the effect is minimal in males and requires concurrent learning activity.
A long-running rat study shows that pregnant rats exposed to the fungicide vinclozolin induced epigenetic changes that persisted for 20 generations, with higher rates of sperm cell death, birth complications, obesity and kidney disease in descendants, underscoring potential risks of environmental chemicals even across many generations, though direct implications for humans remain uncertain.
A Washington State University study in rats shows that a single in-utero exposure to the fungicide vinclozolin can imprint disease risk that persists for 20 generations, with birth-related mortality rising in later generations. The inherited effects are germline-based epigenetic changes, suggesting long-term implications for human disease and highlighting the potential for epigenetic biomarkers to enable preventative medicine decades before disease onset.
A German study shows that an AI-enhanced blood test analyzing DNA methylation markers can classify people into high- or moderate-risk prediabetes groups with about 90% accuracy, using 1,557 epigenetic markers to form a biological fingerprint. This approach could enable earlier, personalized prevention and reduce progression to type 2 diabetes, potentially serving as a simpler, cost-effective diagnostic tool compared with extensive clinical testing.
A study of 726 women found that higher anxiety about aging—especially fears of declining health—was linked to faster epigenetic aging (via DunedinPACE and GrimAge clocks), suggesting health worries may biologically accelerate aging, though causation isn’t proven. Experts note that chronic worry can trigger stress responses, inflammation, and sleep disruption, and advise focusing on present health, differentiating one’s health from others, and seeking mental-health support if anxiety disrupts daily life.