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2016 Fiscal Year Final Research Report

The functional difference among Pcgf family proteins in hematopoietic system

Research Project

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Project/Area Number 15K19544
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Hematology
Research InstitutionChiba University

Principal Investigator

Nakajima-Takagi Yaeko  千葉大学, 大学院医学研究院, 特任助教 (50749497)

Project Period (FY) 2015-04-01 – 2017-03-31
Keywordsポリコーム / Pcgf1 / non-canonical PRC1 / エピジェネティクス
Outline of Final Research Achievements

We found that deletion of Pcgf1 in mice did not compromise self-renewal capacity of HSCs, but induced accumulation of granulocyte-macrophage progenitors and mature myeloid cells, eventually leading to the development of a lethal myeloproliferative neoplasm-like disease in mice. Detailed analysis of hematopoietic stem and progenitor cells (HSPCs) revealed skewing of HSC differentiation to myeloid lineages at the expense of B lymphocyte commitment in the absence of Pcgf1.Comprehensive analyses revealed that Cebpa, a master transcriptional factor for myeloid differentiation, was up-regulated following a reduction in H2AK119ub1 levels in Pcgf1-deficient HSPCs, resulting in the activation of C/EBPα targets in Pcgf1-deficient MPPs. These results indicate that Pcgf1 negatively regulates myeloid commitment of HSPCs to balance their multi-lineage differentiation

Free Research Field

基礎医学

URL: 

Published: 2018-03-22  

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