IGF-1 Signaling Suppression Fails to Slow Aging in Mitochondrial Mutator Mice
Researchers examined whether suppressing insulin-like growth factor‑1 (IGF‑1) signaling could extend the lifespan of mitochondrial mutator mice, which carry a high rate of mitochondrial DNA mutations. Contrary to expectations, reduced IGF‑1 signaling did not increase longevity; most downstream pro‑longevity pathways were blunted or blocked. The results reveal that the benefits of IGF‑1 suppression depend on intact mitochondrial genomes, indicating a hierarchical interaction between these aging hallmarks. The study underscores the need for therapies that maintain mitochondrial DNA integrity.
Applying Mendelian Randomization to the Correlation Between Fitness and Health
Researchers applied a phenome‑wide Mendelian randomization approach to test whether genetically predicted aerobic fitness causally influences health. Screening 712 European‑ancestry phenotypes, they identified 108 discovery associations, with 34 confirming in independent validation. Higher genetically determined fitness correlated with lower risks...
Does Tau Aggregation Spread From Region to Region in the Aging Brain?
A new open‑access study examined tau seed activity in postmortem brain tissue from 128 individuals, combining synaptosome assays, genetic data, and fMRI‑derived connectivity. The researchers found that tau seeds originating in early‑affected regions, such as the entorhinal cortex, can induce...
Cellular Senescence and Mitochondrial Dysfunction and the Aging of the Vascular Endothelium
The review links cellular senescence and mitochondrial dysfunction to the aging of the vascular endothelium, showing how reduced nitric‑oxide, oxidative stress, and chronic inflammation drive atherosclerosis, hypertension, and blood‑brain barrier leakage. It details a feedback loop where mitochondrial bioenergetic decline...
Homoharringtonine as a Senotherapeutic Drug
Researchers used a large‑scale drug‑repositioning screen to identify homoharringtonine (HHT), an FDA‑approved anti‑leukemic agent, as a potent senotherapeutic. In vitro, HHT selectively eliminated senescent pre‑adipocytes while sparing healthy cells. In male mice, HHT cleared senescent adipocytes, restored white‑adipose tissue function,...
Reversing Some Age-Related Changes via Creation of DNA Gaps with the Box A Domain of HMGB1
Researchers delivered a plasmid encoding the Box A domain of HMGB1 to perimenopausal cynomolgus macaques, inducing DNA gap formation. The intervention reversed age‑related alterations in the plasma proteome, bringing key markers such as APOE and SHBG back to levels observed...
The Senescence Associated Secretory Phenotype as a Basis for an Aging Clock
Researchers have created a composite Senescence‑Associated Secretory Phenotype (SASP) Score using large‑scale proteomics and a guided autoencoder transformer model. The score, built on curated SASP proteins from the UK Biobank Pharma Proteomics Project, independently predicts mortality and major chronic diseases...
An Approach to Reduce Harmful Inflammation without Greatly Compromising the Normal Immune Response
Scientists at Scripps have discovered a novel way to curb chronic inflammation by targeting the Munc13-4‑syntaxin 7 interaction that activates Toll‑like receptors inside endosomes. After screening roughly 32,000 compounds, they isolated ENDO12, which selectively blocks this molecular handshake without disrupting other...
Evidence for Retrotransposon Suppression to Reduce Biological Age in Humans
Researchers evaluated two FDA‑approved nucleoside reverse transcriptase inhibitor (NRTI) regimens in healthy adults to see if they could blunt age‑related epigenetic drift. Over 12 weeks, the emtricitabine/tenofovir‑alafenamide (FTC/TAF) combo lowered multiple DNA‑methylation clocks, including DunedinPACE and PhenoAge, and reduced inflammatory...
An Attempt to Obtain Data on Longevity Effects of Human Psilocybin Use
A small observational analysis compared the longevity of documented psilocybin users—referred to as psychedelic personalities—with cancer and aging researchers. The study identified 11 psychedelic users, 12 cancer researchers and 5 aging researchers who died between 2010 and 2025, excluding deaths...
Reviewing What Is Known of Sex Differences in Response to Established Longevity Interventions
Recent research highlights that male and female mammals, especially mice, respond differently to interventions that aim to slow aging. While women outlive men in most populations, they also endure more disease, a pattern echoed in laboratory rodents where sex‑specific outcomes...
Influenza Vaccination Reduces Cardiovascular Risk Following Infection
A new Danish register‑based self‑controlled case series spanning 2014‑2025 shows that influenza infection triggers a sharp, short‑lived surge in acute myocardial infarction and stroke, especially within the first three days. Prior influenza vaccination cuts the excess cardiovascular risk dramatically, with...
NPPA Gene Therapy to Encourage Greater Regeneration Following Heart Attack
Researchers at Columbia Engineering have engineered an RNA‑lipid nanoparticle that programs skeletal muscle to secrete a pro‑ANP precursor, which the heart‑specific enzyme Corin converts into active atrial natriuretic peptide. This two‑phase gene‑therapy bypasses the need for direct cardiac drug delivery,...
Vulnerability to Infection Resulting From the Aging of the Immune System
A new review outlines how aging reshapes the immune system, making older adults far more vulnerable to respiratory viruses such as influenza. The authors detail the twin processes of immunosenescence—declining production of new immune cells—and inflammageing, a chronic, low‑grade inflammatory...
Arg-1 Makes Macrophages More Inflammatory, Impairing Cartilage Regeneration with Age
The study identifies Arginase‑1 (Arg‑1) as a key regulator of age‑dependent macrophage behavior that hampers cartilage regeneration. Single‑cell RNA sequencing shows older animals have fewer anti‑inflammatory macrophage subsets, with Arg‑1 expression declining with age, leading to heightened inflammation. Overexpressing Arg‑1...
