Sirtuins News and Research

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Semaglutide extended lifespan in older female mice, but that was not the only finding

Late-life semaglutide treatment slowed age-related physiological decline, attenuated multiple molecular hallmarks of aging, and extended median lifespan from 742 to 834 days in aged female mice. The drug reproduced many effects of calorie restriction while providing additional benefits in exploratory behavior, spatial memory, and glucose control, suggesting that some effects extend beyond reduced calorie intake alone.

3 Sep 2026

Study finds long COVID leaves a distinct immune signature in the blood

Researchers identified a small panel of inflammatory and neurology-related blood proteins that may help distinguish long COVID from recovery or no prior infection, while also showing that booster vaccination did not appear to worsen these protein responses in this cohort. The study also found that immune responses after reinfection differed from those seen after the first SARS-CoV-2 infection, suggesting altered long-term immune behavior in some previously infected individuals.

14 Apr 2026

Nanoflower-treated stem cells deliver healthier mitochondria to stressed cells

This study shows that vacancy-engineered MoS₂ nanoflowers drive mitochondrial biogenesis in human mesenchymal stem cells by activating SIRT1–PGC-1α signaling and reducing oxidative stress. These treated cells transfer more functional mitochondria to injured recipient cells, restoring energy metabolism and redox balance in multiple in vitro models.

9 Dec 2025

Genetic and cellular mechanisms underlying steatotic liver disease

Steatotic liver disease (SLD), mainly encompassing metabolic dysfunction-associated steatotic liver disease (MASLD), alcohol-related liver disease (ALD), and metabolic dysfunction and ALD (MetALD), has emerged as the dominant cause of chronic liver disease worldwide, displacing viral hepatitis as the primary aetiology.

10 Nov 2025

Scientists uncover mechanism driving efficient protein deacetylation by Sir2 enzyme

Sir2, an enzyme belonging to sirtuins, has been effectively involved in the deacetylation of proteins. A tandem allosteric effect of reactant and product is responsible for the efficient deacetylation cycle of the Sir2 enzyme, reveal researchers from Science Tokyo.

7 Nov 2025

Lactate and lactylation drive metabolic, epigenetic reprogramming in gynecological cancers

Lactate, once considered a metabolic waste product, is now recognized as a key regulator of cellular homeostasis and disease progression.

31 Oct 2025

Researchers identify key role of lactylation in driving aortic dissection

Recently, a research team led by Professor Jian-Xun Wang and Professor Tao Yu from Qingdao University made a significant breakthrough in understanding the role of lactylation modification in aortic dissection (AD).

10 Oct 2025

Curcumin activates SIRT3 to protect bone structure in diabetic mice

In a new Scientific Reports study, curcumin protected bone-forming cells from high-glucose damage by activating the SIRT3/FoxO3a/NRF2 antioxidant pathway and restoring mitochondrial health. In diabetic mice, curcumin improved bone density and oxidative balance, highlighting its potential in osteoporosis prevention.

13 Aug 2025

SIRT6 identified as a critical safeguard of spinal disc health

Low back pain is the most prevalent musculoskeletal condition worldwide and is closely tied to the progressive degeneration of intervertebral discs.

5 Jun 2025

New Alzheimer's drug candidate reduces toxic protein and improves memory in mice models

As researchers work to improve treatment of Alzheimer's disease, new research by UCLA Health identified a candidate drug that reduces levels of a toxic form of a protein in the brain caused by the disease and improved memory in mice by boosting production of a protective protein.

20 May 2025

HO-1 regulates liver fibrosis in NAFLD through the SIRT1 TGF-β Smad3 pathway

Heme oxygenase 1 (HO-1) has an influential yet insufficiently investigated effect on Sirtuin 1 (SIRT1), a histone deacetylase activated by nicotinamide adenine dinucleotide, which may impact the transforming growth factor-β (TGF-ß)/Smad3 pathway in nonalcoholic fatty liver disease (NAFLD)-related liver fibrosis.

2 May 2025

Sleep fragmentation in diabetes triggers lasting liver damage and cardiovascular risk

This new article publication from Acta Pharmaceutica Sinica B, discusses how diabetes-associated sleep fragmentation impairs liver and heart function via SIRT1-dependent epigenetic modulation of NADPH oxidase 4.

14 Apr 2025

Integrated anti-aging strategy could reduce neurodegeneration

Aging significantly impacts neurodegeneration, increasing risks for diseases like Alzheimer's. Research focuses on therapies to enhance cognitive function.

11 Mar 2025

Lithocholic acid enhances health and lifespan, mimicking calorie restriction

Lithocholic acid (LCA), a metabolite induced by calorie restriction (CR), activates AMPK and mimics anti-aging benefits. A recent study highlights LCA's role in improving muscle performance, glucose tolerance, and lifespan in aged organisms.

1 Jan 2025

Unraveling the mechanisms of B-cell maturation in blood cancer

Over four hundred people, 80% of them being children under 14 years old, will be diagnosed with B-cell Acute Lymphoblastic Leukaemia (B-ALL) next year in Spain, according to the latest projections from the Spanish network of cancer registries (REDECAN).

21 Oct 2024

Impact of oxidative stress, gut, and diet on attention deficit hyperactivity disorder pathophysiology

Oxidative stress and gut microbiome interactions are key in ADHD pathogenesis, with diet playing a crucial role in managing symptoms and improving outcomes.

18 Sep 2024

Promising new strategy to combat fungal infections

A group of Brazilian researchers has found a potential target for novel therapeutic strategies to combat fungal infections – more specifically, those caused by Aspergillus fumigatus. An article reporting the discovery is published in the journal Communications Biology.

5 Sep 2024