CD49b identifies functionally and epigenetically distinct subsets of lineage-biased hematopoietic stem cells.

ABSTRACT: Hematopoiesis is maintained by functionally diverse lineage-biased hematopoietic stem cells (HSCs). The functional significance of HSC heterogeneity and the regulatory mechanisms underlying lineage bias are not well understood. However, absolute purification of HSC subtypes with a pre-determined behavior remains challenging, highlighting the importance of continued efforts toward prospective isolation of homogeneous HSC subsets. In this study, we demonstrate that CD49b subdivides the most primitive HSC compartment into functionally distinct subtypes: CD49b^- HSCs are highly enriched for myeloid-biased and the most durable cells, while CD49b⁺ HSCs are enriched for multipotent cells with lymphoid bias and reduced self-renewal ability. We further demonstrate considerable

SUBMITTER: Somuncular E 

PROVIDER: S-EPMC9287668 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature