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Phc2 controls hematopoietic stem and progenitor cell mobilization from bone marrow by repressing Vcam1 expression.

Abstract：

:The timely mobilization of hematopoietic stem and progenitor cells (HSPCs) is essential for maintaining hematopoietic and tissue leukocyte homeostasis. Understanding how HSPCs migrate between bone marrow (BM) and peripheral tissues is of great significance in the clinical setting, where therapeutic strategies for modulating their migration capacity determine the clinical outcome. Here, we identify an epigenetic regulator, Phc2, as a critical modulator of HSPC trafficking. The genetic ablation of Phc2 in mice causes a severe defect in HSPC mobilization through the derepression of Vcam1 in bone marrow stromal cells (BMSCs), ultimately leading to a systemic immunodeficiency. Moreover, the pharmacological inhibition of VCAM-1 in Phc2-deficient mice reverses the symptoms. We further determine that Phc2-dependent Vcam1 repression in BMSCs is mediated by the epigenetic regulation of H3K27me3 and H2AK119ub. Together, our data demonstrate a cell-extrinsic role for Phc2 in controlling the mobilization of HSPCs by finely tuning their bone marrow niche.

journal_name

Nat Commun

journal_title

Nature communications

authors

Bae J,Choi SP,Isono K,Lee JY,Park SW,Choi CY,Han J,Kim SH,Lee HH,Park K,Jin HY,Lee SJ,Park CG,Koseki H,Lee YS,Chun T

doi

10.1038/s41467-019-11386-4

subject

Has Abstract

pub_date

2019-08-02 00:00:00

pages

3496

issue

1

issn

2041-1723

pii

10.1038/s41467-019-11386-4

journal_volume

10

pub_type

杂志文章

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