RESEARKA

Mechanistically, the SIRT3-mediated pathway connects PCSK9 inhibition to fundamental processes in cellular aging. SIRT3 is a key regulator of mitochondrial function, which is central to theories of aging and cellular senescence. By demonstrating that a PCSK9 inhibitor can influence this pathway in endothelial cells, the preclinical data from DOnofrio 2023 provide a conceptual link between cholesterol management and broader longevity biology. The indirectness of this evidence, however, is substantial; the findings derive from a cell culture model using a supraphysiological concentration of evolocumab (100 µg/mL) and an inflammatory stimulus (IL-6 at 20 ng/mL) that may not fully replicate in vivo conditions. This mechanistic plausibility is a necessary but insufficient component of the longevity case for PCSK9 inhibitors.

Citation Support

• source_1 Ma 2025
• source_2 Schwartz 2021
• source_3 Lehrke 2024
• source_4 Imran 2023
• source_5 Faraidy 2023