The nuclear receptor corepressor NCoR1 regulates hematopoiesis and leukemogenesis in vivo

Blood Advances
Xiaoling WanYan Zhang

Abstract

Enhanced understanding of normal and malignant hematopoiesis pathways should facilitate the development of effective clinical treatment strategies for hematopoietic malignancies. Nuclear receptor corepressor 1 (NCoR1) has been implicated in transcriptional repression and embryonic organ development, but its role in hematopoiesis is yet to be fully elucidated. Here, we showed that hematopoietic-specific loss of NCoR1 leads to expansion of the hematopoietic stem cell (HSC) pool due to aberrant cell cycle entry of long-term HSCs under steady-state conditions. Moreover, NCoR1-deficient HSCs exhibited normal self-renewal capacity but severely impaired lymphoid-differentiation potential in competitive hematopoietic-reconstitution assays. Transcriptome analysis further revealed that several hematopoiesis-associated genes are regulated by NCoR1. In addition, NCoR1 deficiency in hematopoietic cells delayed the course of leukemia and promoted leukemia cell differentiation in an MLL-AF9-induced mouse model. NCoR1 and its partner, histone deacetylase 3, can modulate histone acetylation and gene transcription through binding the promoter regions of myeloid-differentiation genes. Our collective results support the critical involvement of NCo...Continue Reading

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Citations

May 14, 2020·Current Opinion in Hematology·Georgina A AndersonKatie L Kathrein
Nov 23, 2019·European Heart Journal·Emiel P C Van der Vorst, Erik A L Biessen
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Oct 29, 2021·Journal of Toxicology and Environmental Health. Part a·Manigandan NagarajanJeganathan Manivannan

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