Every article, presentation, spotlight, and news item we've tagged to Hallmarks of Aging.
Showing 73–96 of 225
Age-related cognitive decline involves microbiome remodeling, with Parabacteroides goldsteinii identified as a primary driver that suppresses neuronal activation in the hippocampus via the vagus nerve. Antibiotic treatment reverses the cognitive deficit even after it develops, establishing the microbiome as a modifiable mechanism rather than an irreversible consequence of aging.
Spatiotemporal transcriptomic analysis reveals how immune cell populations shift and reorganize within liver tissue during aging, exposing distinct microenvironmental changes that precede functional decline. These findings establish a molecular map of immunological aging in a primary metabolic organ, with implications for understanding how local immune dysregulation contributes to age-related disease susceptibility.
Clonal hematopoiesis—the age-related expansion of mutant blood cell populations—enhances response to immune checkpoint inhibitors in cancer patients. This unexpected finding reframes a hallmark of aging as potentially protective in the context of immunotherapy, with implications for how we interpret immune aging and treatment efficacy.
A systematic screen of 32 aging-associated long non-coding RNAs identified HOTAIRM1 as a critical regulator of DNA repair pathways, with restoration of HOTAIRM1 in aged mouse lungs reducing fibrosis. This work establishes lncRNA regulation as a targetable mechanism in cellular senescence.
BioAge's NLRP3 inhibitor BGE-102 produced marked reductions in inflammatory biomarkers (hsCRP, IL-6, fibrinogen) in Phase 1 testing, positioning upstream inflammasome inhibition as a potential scalable approach to chronic inflammation management. This advances a field that has lacked convenient, long-term preventive options despite growing evidence that inflammation drives cardiovascular and age-related disease.
Aged male mice maintain glucose tolerance despite accumulating more fat on a high-fat diet than younger counterparts, a metabolic uncoupling driven by increased energy storage efficiency and reduced lipid turnover. This finding indicates that obesity and glucose dysregulation diverge with age, presenting distinct intervention targets for metabolic health in older populations.
Phosphoenolpyruvate, a glycolytic metabolite, suppresses cGAS-driven inflammation through a direct molecular interaction. The age-related decline in PEP availability explains the transition from metabolic stability to chronic inflammation and neurodegeneration.
Scienta Lab's EVA, a multimodal AI model, accelerates drug discovery for inflammation-related diseases by integrating gene activity, tissue, and protein data to predict clinical outcomes before human trials. For longevity medicine, this tool addresses inflammaging—the chronic, low-grade inflammation driving age-related diseases—potentially compressing drug development timelines from decades to years.
Chronic circadian disruption triggers structural changes in microglia, shifting them toward an inflammatory, stress-primed state that impairs their ability to clear neural debris. This mechanism may represent a primary driver of brain aging and dementia risk decades before cognitive symptoms emerge, with emerging research exploring whether stem cell-derived extracellular vesicles can intercept this inflammatory cascade.
Research in senescent C. elegans reveals a hierarchical cascade of organ system failures rather than simultaneous deterioration, with specific tissues failing in sequence as aging progresses. This finding clarifies the mechanistic order of senescent decline and suggests that interventions targeting early failures in this cascade may prevent downstream system collapse.
Phosphoenolpyruvate, a glycolytic metabolite, suppresses cGAS-STING-driven inflammation and improves cognitive function in Alzheimer's disease models while correlating with healthy aging markers in humans. This identifies a metabolic checkpoint that regulates innate immune signaling during aging.
FAM162A, a mitochondrial cristae protein, regulates mitochondrial structure and energy production through interaction with OPA1, enhancing cellular stress resistance and extending lifespan in model organisms. This identifies a previously unrecognized mechanism linking mitochondrial dynamics to organismal longevity.
Microglial and astrocytic cells in an Alzheimer's disease mouse model exhibit progressive senescence linked to amyloid pathology, while neurons remain unaffected. This cell-type-specific senescence signature identifies glial cells as primary targets for senescence-directed therapeutic intervention in Alzheimer's disease.
Transferring microbiota from young mice to aged mice restored Wnt signaling in intestinal crypts and improved the regenerative capacity of intestinal stem cells. This demonstrates that age-related decline in intestinal function can be partially reversed through microbial transfer, with direct implications for understanding how microbiota composition influences tissue regeneration during aging.
TIM-3, an immune checkpoint protein, drives age-related immune dysfunction and contributes to neurodegeneration and brain tumors through promotion of immunosuppressive myeloid cells. Blocking TIM-3 represents a potential therapeutic approach to restore immune competence in central nervous system disease.
Stroke in the context of chronic kidney disease triggers immune dysregulation that accelerates mitochondrial dysfunction and aging processes. This cascade reveals how organ system failure in one area can compromise cellular energy production and immunity simultaneously, with significant implications for longevity in populations with renal compromise.
Human cGAS activates LINE-1 retrotransposon transcription through upregulation of CTCF and RUNX3, triggering cellular senescence via MAVS-dependent RNA sensing. This human-specific pathway reveals a mechanism linking genomic surveillance to accelerated cellular aging, with direct implications for understanding senescence in aging and age-related disease.
The European Federation for Aging Research addresses fragmentation in gerontology research by establishing coordinated frameworks and data sharing across European institutions. Unified research infrastructure accelerates discovery in aging mechanisms and extends translational pathways to clinical intervention.
Aged livers accumulate exhausted CD8+ T cells predominantly in the portal vein zone, where periportal hepatocytes upregulate LPIN1 to promote immune dysfunction. This spatial immune dysregulation correlates directly with liver disease progression and identifies a therapeutic target for age-related hepatic pathology.
Aging in rats produces sex-dependent changes in emotional regulation, cognitive function, and brain immune cell populations, with females showing greater cognitive decline and males exhibiting more pronounced emotional dysregulation. These findings suggest that neuroinflammation and immune cell dynamics contribute to cognitive and emotional aging, with implications for understanding sex-specific vulnerabilities in human neurodegenerative conditions.
PERP protein deficiency impairs thymic negative selection—the process by which autoreactive T cells are eliminated during development—leading to accumulation of self-reactive CD4+ T cells and autoimmune arthritis in aged mice. This identifies a molecular mechanism linking defective immune tolerance to age-related autoimmunity.
Fibulin-5, an extracellular matrix protein that declines with age, maintains epidermal stem cell function by activating YAP signaling through integrin binding. Loss of fibulin-5 reproduces age-associated changes in skin stem cell populations, identifying a molecular mechanism linking extracellular environment degradation to cellular aging.
Aging and HIV infection shift peripheral T follicular helper cell signaling from IL-21–STAT3 toward IL-2–STAT5 activation, impairing the immune response to influenza vaccination. This signaling imbalance represents a measurable immune mechanism underlying vaccine non-responsiveness in older adults and people with HIV.
Dgat2, an enzyme controlling triglyceride synthesis, emerges as a critical regulator linking amyloid pathology to lipid accumulation and neuroinflammation in Alzheimer's disease. Suppressing Dgat2 in animal models restores cognitive function, synaptic integrity, sleep quality, and circadian rhythms while reducing neuroinflammatory signaling, indicating a conserved therapeutic target across species.
