Differential roles of epigenetic regulators in the survival and differentiation of oligodendrocyte precursor cells.

Glia
Naohiro EgawaKen Arai

Abstract

During development or after brain injury, oligodendrocyte precursor cells (OPCs) differentiate into oligodendrocytes to supplement the number of oligodendrocytes. Although mechanisms of OPC differentiation have been extensively examined, the role of epigenetic regulators, such as histone deacetylases (HDACs) and DNA methyltransferase enzymes (DNMTs), in this process is still mostly unknown. Here, we report the differential roles of epigenetic regulators in OPC differentiation. We prepared primary OPC cultures from neonatal rat cortex. Our cultured OPCs expressed substantial amounts of mRNA for HDAC1, HDAC2, DNMT1, and DNMT3a. mRNA levels of HDAC1 and HDAC2 were both decreased by the time OPCs differentiated into myelin-basic-protein expressing oligodendrocytes. However, DNMT1 or DNMT3a mRNA level gradually decreased or increased during the differentiation step, respectively. We then knocked down those regulators in cultured OPCs with siRNA technique before starting OPC differentiation. While HDAC1 knockdown suppressed OPC differentiation, HDAC2 knockdown promoted OPC differentiation. DNMT1 knockdown also suppressed OPC differentiation, but unlike HDAC1/2, DNMT1-deficient cells showed cell damage during the later phase of OPC di...Continue Reading

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Citations

Jan 21, 2020·Glia·Peter Arthur-Farraj, Sarah Moyon
May 20, 2020·Journal of Cerebral Blood Flow and Metabolism : Official Journal of the International Society of Cerebral Blood Flow and Metabolism·Naohiro EgawaHaruhisa Inoue
Oct 17, 2019·Cells·Assia TianeTim Vanmierlo
Nov 10, 2020·Journal of Cellular Physiology·Hanhong Zhu, Changxiu Wang
May 9, 2021·Neurochemistry International·Leora D'SouzaBhavana Muralidharan
Sep 6, 2021·Cellular and Molecular Life Sciences : CMLS·Assia TianeTim Vanmierlo
Jan 27, 2020·Developmental Neuroscience·Santosh R D'Mello

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