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Tag: Sirtuins

Lungs in orange
February 23, 2021
Scientists have successfully reversed persistent lung fibrosis in mice by overexpressing the SIRT3 protein in lung macrophages [1]. Fibrosis: not knowing when to stop Fibrosis may be the true apex predator of humanity. According to one study, fibrotic diseases that cause organ failure are responsible for around 45% of all deaths in the United States...
October 08, 2020
Genes in the sirtuin family are conserved across a wide range of species and are involved in cellular metabolism, immune response, and aging. SIRT1 is known to decline during aging, but the mechanisms involved in this process were not known. Now, an international team has clarified how SIRT1 is regulated during cellular senescence [1]. Cellular...
Microscope image of smooth muscle cells
August 18, 2020
Scientists have shown that insulin-like growth factor (IGF-1) mitigates age-related mitochondrial decline and cellular aging in cultured smooth muscular cells [1], although other studies paint a grimmer picture of IGF-1's effects. Mitochondrial decline and aging Mitochondria, dubbed "the powerhouses of the cell" for producing the bulk of the energy that our cells need to operate,...
August 04, 2020
A group of scientists have shown that the SIRT2 protein increases the accumulation of amyloid beta, a known marker of Alzheimer's disease (AD), in the brains of mice. They propose a mechanism underlying this phenomenon and demonstrate that inhibiting SIRT2 ameliorates AD-associated cognitive decline in mice [1]. AD is one of the most devastating age-related...
Budding yeast
July 28, 2020
A group of researchers has shown that yeast cells have two different and mutually exclusive modes of aging that seem to be interlinked. The scientists were also able to artificially induce a third mode of aging that prolongs both healthspan and lifespan. Yeast is a popular object of genomic research due to its short reproductive...
February 19, 2020
Researchers from Berkeley have established that SIRT2 prevents overactivation of the NLRP3 inflammasome through deacetylation. Targeting this pathway can possibly reduce or even reverse age-related chronic inflammation and insulin resistance. What are sirtuins? Sirtuins are a family of proteins that have long been a target of longevity research [1]. Sirtuins probably descend from some of...