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

Author

Listed:
  • Joonbeom Bae

    (Korea University)

  • Sang-Pil Choi

    (Korea University)

  • Kyoichi Isono

    (Wakayama Medical University)

  • Ji Yoon Lee

    (CHA University)

  • Si-Won Park

    (Korea University)

  • Chang-Yong Choi

    (Korea University)

  • Jihye Han

    (Korea University)

  • Sang-Hoon Kim

    (Korea University)

  • Han-Hyoung Lee

    (Korea University)

  • Kyungmin Park

    (Korea University)

  • Hyun Yong Jin

    (University of California, San Francisco)

  • Suk Jun Lee

    (Cheongju University)

  • Chung-Gyu Park

    (Seoul National University College of Medicine)

  • Haruhiko Koseki

    (RIKEN Center for Integrative Medical Sciences)

  • Young Sik Lee

    (Korea University)

  • Taehoon Chun

    (Korea University)

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.

Suggested Citation

  • Joonbeom Bae & Sang-Pil Choi & Kyoichi Isono & Ji Yoon Lee & Si-Won Park & Chang-Yong Choi & Jihye Han & Sang-Hoon Kim & Han-Hyoung Lee & Kyungmin Park & Hyun Yong Jin & Suk Jun Lee & Chung-Gyu Park &, 2019. "Phc2 controls hematopoietic stem and progenitor cell mobilization from bone marrow by repressing Vcam1 expression," Nature Communications, Nature, vol. 10(1), pages 1-14, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-11386-4
    DOI: 10.1038/s41467-019-11386-4
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