Article ; Online: Heterochromatin and Polycomb as regulators of haematopoiesis.
Biochemical Society transactions
2021 Volume 49, Issue 2, Page(s) 805–814
Abstract: Haematopoiesis is the process by which multipotent haematopoietic stem cells are transformed into each and every type of terminally differentiated blood cell. Epigenetic silencing is critical for this process by regulating the transcription of cell-cycle ...
Abstract | Haematopoiesis is the process by which multipotent haematopoietic stem cells are transformed into each and every type of terminally differentiated blood cell. Epigenetic silencing is critical for this process by regulating the transcription of cell-cycle genes critical for self-renewal and differentiation, as well as restricting alternative fate genes to allow lineage commitment and appropriate differentiation. There are two distinct forms of transcriptionally repressed chromatin: H3K9me3-marked heterochromatin and H3K27me3/H2AK119ub1-marked Polycomb (often referred to as facultative heterochromatin). This review will discuss the role of these distinct epigenetic silencing mechanisms in regulating normal haematopoiesis, how these contribute to age-related haematopoietic dysfunction, and the rationale for therapeutic targeting of these pathways in the treatment of haematological malignancies. |
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MeSH term(s) | Animals ; Cell Cycle/genetics ; Cell Differentiation/genetics ; Cell Self Renewal ; Chromatin/genetics ; Chromatin/metabolism ; Epigenesis, Genetic ; Hematopoiesis/genetics ; Heterochromatin/genetics ; Heterochromatin/metabolism ; Histones/metabolism ; Humans ; Methylation ; Polycomb-Group Proteins/genetics ; Polycomb-Group Proteins/metabolism |
Chemical Substances | Chromatin ; Heterochromatin ; Histones ; Polycomb-Group Proteins |
Language | English |
Publishing date | 2021-05-18 |
Publishing country | England |
Document type | Journal Article ; Research Support, Non-U.S. Gov't ; Review |
ZDB-ID | 184237-7 |
ISSN | 1470-8752 ; 0300-5127 |
ISSN (online) | 1470-8752 |
ISSN | 0300-5127 |
DOI | 10.1042/BST20200737 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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