Every article, presentation, spotlight, and news item we've tagged to Hallmarks of Aging.
Showing 169–192 of 239
Omega-3 polyunsaturated fatty acids reduce cellular senescence in kidney tissue through FFAR4 activation, restoring filtration function and reducing fibrosis in aged mice and disease models. This mechanism explains previously mixed clinical findings and identifies a specific pathway relevant to chronic kidney disease progression.
Aerobic exercise induces measurable transcriptome changes in aged skeletal muscle, activating pathways associated with mitochondrial function, protein synthesis, and cellular stress resilience. These molecular shifts provide a mechanistic explanation for how structured movement preserves muscle quality and metabolic capacity across the lifespan.
SLC25A51, a mitochondrial NAD transporter in fat cells, declines with age and directly regulates adipose tissue energy metabolism and systemic insulin sensitivity. Loss of this transporter accelerates metabolic disease phenotypes; its restoration protects against obesity and insulin resistance in aging.
Senescent cell immunogenicity varies substantially by cell type and the trigger that induced senescence. RAS-induced senescent myoblasts activated immune responses, while senescent fibroblasts, endothelial cells, and lung progenitors showed limited or no immunogenicity despite expressing senescence markers.
Muscle fiber disorganization, quantified as a homeostatic dysregulation index, independently predicts mobility decline and reduced mitochondrial function in adults over 70, regardless of muscle mass. This establishes structural entropy as a measurable mechanism of skeletal muscle aging separate from loss of size alone.
Telomerase (TERT) in myeloid cells prevents senescence and pro-inflammatory polarization through mechanisms independent of telomere length. Loss of myeloid TERT drives foam cell formation, dyslipidemia, pulmonary fibrosis, and cardiac dysfunction—establishing TERT as essential for preventing aging-associated multi-organ pathology.
Natural killer cells from older adults fail to clear senescent fibroblasts due to overactivation of the Cdc42 protein, which disrupts the cellular machinery required for releasing cytotoxic granules and producing ATP. Pharmacological inhibition of Cdc42 restores this clearing capacity and offers a potential therapeutic target for age-related disease driven by senescent cell accumulation.
Wearable devices tracking activity rhythms reveal that irregular movement patterns correlate with systemic inflammation and accelerated biological aging. This connection between circadian disruption and aging rate offers a quantifiable marker for longevity risk that precedes clinical disease.
BCL XL-PROTAC, a senolytic agent, selectively eliminates senescent cells in COPD airway tissue while promoting proliferation of healthy cells. This approach addresses a core driver of age-related lung disease and suggests a therapeutic pathway for restoring lung cell function in COPD patients.
Researchers encapsulated healthy mitochondria in red blood cell membranes to deliver them into diseased cells, achieving efficient uptake and functional restoration across multiple cellular models of mitochondrial dysfunction. This addresses a long-standing barrier in mitochondrial replacement therapy and demonstrates potential for treating mitochondrial diseases and age-related energy decline.
RNASEK, an enzyme that degrades circular RNA accumulation in cells, extends lifespan in model organisms by removing a form of molecular waste that accelerates aging. This identifies a specific degradation pathway central to cellular longevity.
Suppressing growth hormone signaling in adipose tissue of aged mice preserved cognitive function, reduced neuroinflammation and cellular senescence, and restored neural firing patterns to near-youthful levels. This demonstrates adipose tissue as a peripheral regulator of brain aging independent of systemic growth hormone levels.
Periodic therapeutic phlebotomy restores bone marrow function in aging models, reducing senescence markers and improving tissue integrity across multiple organ systems. The mechanism involves rebalancing hematopoietic homeostasis through rescue of mesenchymal and endothelial stem cells, suggesting a practical intervention with clinical translation potential.
Moderate hyperoxia induces cellular senescence in developing airway tissue, with lasting consequences for lung function. Three mechanistically distinct interventions—Fucoidan, Dasatinib plus Quercetin, and MitoQ—each mitigate senescence through different pathways, offering potential strategies to prevent hyperoxia-related lung disease in premature infants.
Senescent fibroblasts depend on reduced glucose metabolism and maintained chaperone proteins for survival. Inhibiting pyruvate dehydrogenase selectively eliminates senescent cells, including therapy-induced senescent cancer cells, with synergistic enhancement when combined with chaperone inhibition.
Plasma proteomics of Swiss centenarians identified 37 proteins maintaining a younger profile despite advanced age, with pathways implicating immune regulation, metabolic enzyme function, and extracellular matrix stability. These findings establish reproducible molecular signatures of healthy longevity across independent cohorts and suggest specific protein targets for aging intervention.
GADD45B deletion induces DNA methylation patterns resembling age-associated changes in hematopoietic stem cells, yet these methylation alterations occur without functional decline. The research distinguishes between methylation signatures and actual loss of HSC capacity, providing a resource to identify which methylation sites causally drive age-related hematopoietic dysfunction.
Energy Span reframes fatigue as a quantifiable, systems-level signal of healthspan decline that emerges before conventional biomarkers shift into pathological ranges. This perspective bridges the gap between subjective experience and measurable biology, positioning energy as an early warning system reflecting mitochondrial function, metabolic flexibility, circadian rhythm, and autonomic regulation operating in concert.
The Neuroscience of Vitality and Aging Conference brings together researchers, clinicians, policymakers, and investors to address brain health preservation and neurodegenerative disease prevention. The event recognizes brain aging as a modifiable biological process and aims to translate fragmented research across academia, industry, and policy into coordinated clinical advancement.
A pilot study demonstrates that Lactiplantibacillus plantarum OL3246 improves quality of life in aging adults through measurable reductions in inflammatory markers and shifts in gut microbiota composition. This probiotic strain shows potential as a targeted intervention for mitigating age-related inflammatory decline.
FGF21 enhances lactate uptake and utilization in the aging brain, protecting against neuroinflammation-driven cognitive decline. This mechanism reveals how metabolic efficiency at the cellular level directly influences neuronal resilience during aging.
Blocking growth hormone signaling specifically in adipose tissue reduces neuroinflammation, preserves synaptic integrity, and improves cognitive performance across multiple domains in aged mice. This identifies peripheral adipose tissue as an unexpected regulator of brain aging, suggesting a therapeutic target for age-related cognitive decline.
HDAC9 gene deletion in mice reduces age-related fat tissue senescence and restores mitochondrial function through upregulation of thiosulfate sulfurtransferase (TST), a protein whose decline contributes to metabolic dysfunction during aging. This identifies HDAC9 as a druggable epigenetic target for preserving adipose tissue health.
Fisetin, a plant-derived senolytic, reverses age-related endothelial dysfunction in aging mice by eliminating senescent endothelial cells and reducing the SASP factor CXCL12, which drives vascular dysfunction through oxidative stress and impaired nitric oxide production. This identifies a mechanistic pathway linking cellular senescence to cardiovascular aging and demonstrates functional recovery through targeted senolytic intervention.
