From symbiote to bad neighbor: The intestinal microbiome as a driver of CHIP.

Cowan, Courtney M; Pietras, Eric M · Cell Stem Cell · 2025

basic_science · Level V

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Abstract

Hematopoietic stem cells (HSCs) with mutations that can cause clonal hematopoiesis of indeterminate potential (CHIP) accumulate during aging. Agarwal et al.<sup>1</sup> demonstrate in Nature that intestinal barrier permeability increases with age and enables the microbial metabolite ADP-heptose to reach the bone marrow, thus driving the expansion of DNMT3A-mutant HSCs.

Medical subject headings