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The NAD-Booster Nicotinamide Riboside Potently Stimulates Hematopoiesis through Increased Mitochondrial Clearance

Cell Stem Cell

March 7, 2019

Vannini, Nicola

Summary

It has been recently shown that increased oxidative phosphorylation, as reflected by increased mitochondrial activity, together with impairment of the mitochondrial stress response, can severely compromise hematopoietic stem cell (HSC) regeneration. Here we show that the NAD+-boosting agent nicotinamide riboside (NR) reduces mitochondrial activity within HSCs through increased mitochondrial clearance, leading to increased asymmetric HSC divisions. NR dietary supplementation results in a significantly enlarged pool of progenitors, without concurrent HSC exhaustion, improves survival by 80%, and accelerates blood recovery after murine lethal irradiation and limiting-HSC transplantation. In immune-deficient mice, NR increased the production of human leucocytes from hCD34+ progenitors. Our work demonstrates for the first time a positive effect of NAD+-boosting strategies on the most primitive blood stem cells, establishing a link between HSC mitochondrial stress, mitophagy, and stem-cell fate decision, and unveiling the potential of NR to improve recovery of patients suffering from hematological failure including post chemo- and radiotherapy.

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I am Shelly Albaum, and this is my personal website and blog. All the opinions presented here are my own. Nobody writes here but me. You can read more about me here. Cookies are not required to use this website. Read more about that here. 

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Original work © 2022 by Right of Assembly

No claim to research or any work of others

IMPORTANT DISCLOSURES

1. Health Supplements Are Not Medicines. Health Supplements that raise NAD levels, like nicotinamide riboside or other NAD precursors, are not intended to diagnose, treat, cure, or prevent any disease.

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2. No Medical Advice. I am a lawyer and a journalist, not a doctor, and I offer no medical advice. But I do follow the science, and I can bring to your attention some interesting studies. You can read more about me here. And check with your physician -- your physician can look at this research, too.

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