Twelve weeks of dietary coenzyme Q10 restored megakaryocyte proliferation, maturation, and polyploidization in naturally aged mice while reducing platelet aggregation and activation, without changing platelet counts. Mechanistic work in senescent MEG-01 cells linked the effect to increased autophagic flux, with COPS3 identified as a contributing but not exclusive mediator. The finding positions a widely available nutrient against an underexamined driver of age-related thrombotic risk.
Key Points
- CoQ10 restored megakaryocyte maturation and polyploidization in aged mice
- Platelet aggregation and activation fell without changes in platelet count
- COPS3-associated autophagic flux partially explains the observed effect
Longevity Analysis
Platelet hyperreactivity accumulates quietly with age and contributes to thrombotic events that end otherwise healthy lifespans, yet it is rarely measured outside acute cardiovascular care. Targeting the bone marrow cells that produce platelets — rather than the platelets themselves — shifts the intervention upstream, restoring the cellular housekeeping that clears damaged components and allows precursor cells to mature properly. That autophagy sits at the center of the mechanism reinforces a recurring pattern in age-related decline: the capacity to renew and dispose, not the capacity to produce, is what erodes first, and the quality of what circulates matters more than the quantity.
Original published by Wiley Aging Cell, by Yixuan Xu, Yu‐heng Mao, Fenglin Song, Fang He, Yueying Wu, CaiXia Wang, Minghan Wang, Shuangfeng Xie, Heyu Ni, Yan Yang .