Every article, presentation, spotlight, and news item we've tagged to Hallmarks of Aging.
Showing 193–216 of 241
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.
Aging presents distinct phenotypic pathways with different metabolic signatures, particularly involving taurine metabolism. Identifying these heterogeneous frailty patterns enables targeted intervention strategies rather than one-size-fits-all approaches to age-related decline.
Early-life consumption of galactose and glucose (lactose components) extends lifespan in female flies exposed to obesogenic diets in adulthood through reprogramming of lipid metabolism, while reducing lifespan in males. This nutritional programming effect demonstrates that early dietary composition establishes metabolic resilience patterns that persist throughout life and respond differentially by sex.
In clinically healthy older adults tracked over three years, declining physical fitness—independent of reported activity levels—drove immune remodeling toward senescent and regulatory T cell phenotypes, without systemic inflammation. Physical fitness emerges as a modifiable determinant of immune aging trajectory and resilience.
Cellular senescence in ectopic endometrial tissue drives aggressive endometriosis through a PAK4/AKT signaling loop that promotes macrophage-mediated immune remodeling. Stigmasterol, a plant-derived phytosterol, suppresses this pathway and reduces lesion invasiveness in preclinical models, suggesting a mechanism-based therapeutic approach to a senescence-driven disease subtype.
FGF21, a growth factor that declines with age, delays intervertebral disc degeneration by upregulating SIRT1 and restoring mitochondrial quality control through the PINK1-Parkin mitophagy pathway. This mechanism addresses a primary driver of age-related lower back pain by counteracting cellular senescence in disc tissue.
Cambrian Bio will present Phase 1b clinical data on ATX-304, an oral small molecule that activates AMPK and mitochondrial function, in prediabetic obese participants. The compound targets age-related metabolic decline through dual mechanisms of action relevant to obesity and cardiometabolic disease management.
High-impact chronic pain is associated with subjective cognitive decline, with age acting as a moderating factor. This relationship has implications for understanding how persistent pain states interact with cognitive aging and longevity outcomes.
Researchers studying animals that recover from extreme stress—hibernating ground squirrels and aging dogs—are identifying reversible mechanisms of age-related disease that human datasets alone may never reveal. This approach reframes aging as a problem with existing biological solutions rather than inevitable decline.
Ageism and self-perceptions of aging cluster into distinct psychosocial profiles that correlate with cognitive performance and mental health outcomes in older adults. These profiles suggest that internalized attitudes toward aging—shaped by both cultural messaging and personal belief—measurably influence brain function and psychological resilience.
D-pinitol, a naturally occurring inositol derivative, extends lifespan in C. elegans by coordinating three distinct cellular mechanisms: antioxidant defense, protein stability (proteostasis), and autophagy. This multi-pathway activation suggests a compound that addresses fundamental aging processes rather than targeting a single intervention point.
Magnesium deficiency accelerates intestinal aging and increases susceptibility to colitis by destabilizing cellular adhesion complexes. Population data from 182,213 individuals shows dietary magnesium intake of 334.7–420.0 mg/day significantly reduces risk of inflammatory bowel disease, irritable bowel syndrome, and related disorders.
Fibulin-5, an extracellular matrix protein that declines with age, regulates fast-cycling skin cell populations through the YAP signaling pathway. Mice lacking fibulin-5 exhibit accelerated skin aging phenotypes, including loss of regenerative cell populations and compromised dermal-epidermal integrity, suggesting this protein may be central to maintaining skin renewal capacity across the lifespan.
Individuals with more problematic people in their close social networks exhibit accelerated biological aging, with each additional "hassler" associated with a 1.5% faster aging pace and approximately 9.5 months of additional biological age. This effect persists after controlling for demographic, occupational, and health factors, establishing social stress as a measurable driver of epigenetic aging.
ARPA-H is allocating $144 million through its PROSPR program to fund seven research teams testing interventions designed to extend healthspan in humans. The initiative addresses a critical gap in geroscience drug development by establishing early biomarkers and trial designs that can demonstrate functional benefit within one to three years rather than decades.
APOE2, a genetic variant associated with exceptional longevity, activates DNA repair pathways and resists cellular senescence in neurons, while APOE4 exhibits elevated DNA damage and senescence markers. This mechanism extends beyond lipid metabolism, explaining APOE2's protective effects against neurodegeneration.
Two conjugated polyunsaturated fatty acids, α-eleostearic acid and its methyl ester, demonstrated senolytic activity in cell cultures and mouse models across multiple tissues without systemic toxicity. The structural features of these compounds—particularly conjugation patterns and double-bond configuration—correlate with their ability to eliminate senescent cells, which accumulate with age and drive inflammatory cascades linked to chronic disease.
Juvenescence's PAI-1 inhibitor MDI-2517 completed Phase 1 trials, demonstrating safety and tolerability for a once-daily oral therapy targeting inflammation and fibrosis—processes central to aging and age-related disease. Genetic evidence suggests PAI-1 reduction correlates with approximately 10 years of extended lifespan, positioning this mechanism as a meaningful target for aging intervention.
Fibulin-5, an extracellular matrix protein that declines with age, maintains populations of fast-cycling skin cells through YAP signaling. Mice lacking fibulin-5 exhibit accelerated skin aging phenotypes, including loss of fast-cycling cells and compromised epidermal-dermal junction integrity, mirroring natural aging processes.
TGFβ signaling emerges as the primary tumor-promoting mechanism within senescent cells induced by platinum chemotherapy in ovarian and lung cancers. Targeting this pathway selectively could preserve the therapeutic benefit of chemotherapy while blocking its pro-tumor effects, addressing a critical vulnerability in current cancer treatment.
Terbinafine and miglustat, FDA-approved drugs, extend lifespan and healthspan by inducing mitochondrial stress responses through coordinated activation of ATFS-1 and DAF-16 pathways. This mechanism represents a distinct integration of mitochondrial and insulin signaling stress responses relevant to aging intervention.
Single-cell profiling of nearly 1,000 individuals demonstrates that immune aging follows distinct cellular and transcriptional trajectories between sexes, with female participants showing more pronounced cellular and molecular remodeling than males. This finding reveals that sex-based differences in immune function are not uniform across aging and must inform how we assess and support immune resilience across the lifespan.
Retinal protein signatures correlate with systemic aging markers and clinical traits in women, establishing the eye as a window into whole-body physiological age. These oculometric measures may enable earlier detection of aging-related dysfunction across multiple organ systems.
