Nicotinamide and pyridoxine stimulate muscle stem cell expansion and enhance regenerative capacity during aging - Archive ouverte HAL
Article Dans Une Revue The Journal of clinical investigation Année : 2024

Nicotinamide and pyridoxine stimulate muscle stem cell expansion and enhance regenerative capacity during aging

Afshin Ostovar
Julien Gondin

Résumé

Skeletal muscle relies on resident muscle stem cells (MuSCs) for growth and repair. Aging and muscle diseases impair MuSC function, leading to stem cell exhaustion and regenerative decline that contribute to the progressive loss of skeletal muscle mass and strength. In the absence of clinically available nutritional solutions specifically targeting MuSCs, we used a human myogenic progenitor high-content imaging screen of natural molecules from food to identify nicotinamide (NAM) and pyridoxine (PN) as bioactive nutrients that stimulate MuSCs and have a history of safe human use. NAM and PN synergize via CK1-mediated cytoplasmic β-catenin activation and AKT signaling to promote amplification and differentiation of MuSCs. Oral treatment with a combination of NAM and PN accelerated muscle regeneration in vivo by stimulating MuSCs, increased muscle strength during recovery, and overcame MuSC dysfunction and regenerative failure during aging. Levels of NAM and bioactive PN spontaneously declined during aging in model organisms and interindependently associated with muscle mass and walking speed in a cohort of 186 aged people. Collectively, our results establish the NAM/PN combination as a nutritional intervention that stimulates MuSCs, enhances muscle regeneration, and alleviates age-related muscle decline with a direct opportunity for clinical translation.
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hal-04840848 , version 1 (16-12-2024)

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Sara Ancel, Joris Michaud, Eugenia Migliavacca, Charline Jomard, Aurélie Fessard, et al.. Nicotinamide and pyridoxine stimulate muscle stem cell expansion and enhance regenerative capacity during aging. The Journal of clinical investigation, 2024, 134 (24), ⟨10.1172/JCI163648⟩. ⟨hal-04840848⟩
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