Mitochondrial DNA fragments integrate into the nuclear genome (Numts), particularly in brain tissue, increasing with age and correlating with earlier mortality. In cultured fibroblasts, new insertions appear every 13 days, accelerating under stress and mitochondrial dysfunction, suggesting potential implications for ageing and longevity.
N6-Methyladenine in mitochondrial DNA and its role in ageing
Mitochondrial DNA progressively accumulates N6-methyladenine (6mA) with age, potentially serving as an ageing biomarker. In long-lived mutants, this methylation rate slows, linking mitochondrial epigenetics to longevity. The findings highlight mitochondrial DNA’s role in ageing and introduce a precise, cost-effective method for measuring 6mA levels.
KIBRA and PKMζ: Protecting memory as we age
Memory persistence relies on the interaction between KIBRA and PKMζ, maintaining synaptic strength despite molecular turnover. This partnership supports long-term memory by anchoring PKMζ to active synapses, essential for late-phase potentiation. Disrupting this interaction erases established memories, highlighting its role in sustaining memory longevity.
The unique mechanism of DdrC in enhancing DNA stability
DdrC, a DNA repair protein from Deinococcus radiodurans, recognises and stabilises DNA breaks by binding to both single-stranded and double-stranded lesions. It bridges and compacts DNA through a novel mechanism dependent on structural asymmetry, enhancing repair efficiency and supporting the bacterium’s exceptional resistance to DNA damage.
Ageing’s key transition periods and their impact on health
Ageing undergoes two key periods of rapid change: early adulthood and later life. These transitions significantly impact health and biological ageing, offering opportunities to target interventions and optimise healthspan during these critical phases.
Dietary protein tweaks that enhance longevity and healthspan
Restricting dietary isoleucine boosts metabolic health, decreases frailty, and extends lifespan in genetically diverse mice. Male mice benefit most, showing a 33% lifespan increase. This amino acid adjustment offers a promising, calorie-independent way to enhance healthspan and longevity.
Unique gut mycobiome traits in long-lived individuals
Long-lived individuals exhibit unique gut fungal features, including enriched Candida enterotypes and maintained core taxa like Aspergillus and Penicillium. These fungal patterns, closely linked with beneficial bacterial traits, suggest a role in healthy ageing and longevity through gut microbiome balance and resilience.
Powerful molecules for health and longevity: Our top 20
Discover 20 game-changing molecules that support optimal health and longevity. From enhancing energy and resilience to targeting the hallmarks of ageing, this guide dives into the science behind each molecule and its potential to help you live a longer, healthier life. Spoiler alert: Personalisation is key.
Mitochondria therapy improves stromal cell function and longevity
Artificial mitochondrial transplantation rejuvenates mesenchymal stromal cells, reducing senescence and enhancing anti-inflammatory effects. By transferring healthy mitochondria, aged cells regain energy metabolism, diminish oxidative stress, and improve insulin sensitivity, presenting a promising tool for regenerative therapies targeting ageing and chronic inflammation.
Understanding PFAS and their impact on longevity and ageing
Regulations on per- and polyfluoroalkyl substances (PFAS), known as ‘forever chemicals’, are tightening due to their environmental persistence and potential health risks. Found in consumer products and water sources, stricter guidelines aim to reduce exposure and safeguard public health.
