A microbiome-macrophage-iron axis guides stressed hematopoietic stem cell fate.

Caiado, Francisco; Manz, Markus G · Cell Stem Cell · 2022

editorial · Level V

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Abstract

The mammalian microbiota is a recently recognized regulator of hematopoiesis. In this issue of Cell Stem Cell, Zhang et al. (2022) show in mice that microbiota-derived butyrate enhances bone marrow macrophage erythrophagocytosis-dependent iron availability, which supports stress-induced hematopoietic stem cell differentiation and blood regeneration.

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