A Bach2-Cebp Gene Regulatory Network for the Commitment of Multipotent Hematopoietic Progenitors

Ari Itoh-Nakadai, Mitsuyo Matsumoto, Hiroki Kato, Junichi Sasaki, Yukihiro Uehara, Yuki Sato, Risa Ebina-Shibuya, Mizuho Morooka, Ryo Funayama, Keiko Nakayama, Kyoko Ochiai, Akihiko Muto, Kazuhiko Igarashi

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Hematopoietic stem cell and multipotent progenitor (MPP) commitment can be tuned in response to an infection so that their differentiation is biased toward myeloid cells. Here, we find that Bach2, which inhibits myeloid differentiation in common lymphoid progenitors, represses a cohort of myeloid genes and activates those linked to lymphoid function. Bach2 repressed both Cebpb and its target Csf1r, encoding C/EBPβ and macrophage colony-stimulating factor receptor (M-CSFr), respectively, whereas C/EBPβ repressed Bach2 and activated Csf1r. Bach2 and C/EBPβ further bound to overlapping regulatory regions at their myeloid target genes, suggesting the presence of a gene regulatory network (GRN) with mutual repression between these factors and a feedforward loop leading to myeloid gene regulation. Lipopolysaccharide reduced the expression of Bach2, resulting in enhanced myeloid differentiation. The Bach2-C/EBPβ GRN pathway thus tunes MPP commitment to myeloid and lymphoid lineages both under normal conditions and after infection.

Original languageEnglish
Pages (from-to)2401-2414
Number of pages14
JournalCell Reports
Volume18
Issue number10
DOIs
Publication statusPublished - 2017 Mar 7

Keywords

  • B cells
  • gene regulatory network
  • infection
  • inner myeloid
  • lineage commitment
  • multipotent progenitors
  • stem cells
  • super enhancers
  • transcription factors

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)

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