Origins and Proliferative States of Human Oligodendrocyte Precursor Cells.

Cell
Wei HuangArnold R Kriegstein

Abstract

Human cerebral cortex size and complexity has increased greatly during evolution. While increased progenitor diversity and enhanced proliferative potential play important roles in human neurogenesis and gray matter expansion, the mechanisms of human oligodendrogenesis and white matter expansion remain largely unknown. Here, we identify EGFR-expressing "Pre-OPCs" that originate from outer radial glial cells (oRGs) and undergo mitotic somal translocation (MST) during division. oRG-derived Pre-OPCs provide an additional source of human cortical oligodendrocyte precursor cells (OPCs) and define a lineage trajectory. We further show that human OPCs undergo consecutive symmetric divisions to exponentially increase the progenitor pool size. Additionally, we find that the OPC-enriched gene, PCDH15, mediates daughter cell repulsion and facilitates proliferation. These findings indicate properties of OPC derivation, proliferation, and dispersion important for human white matter expansion and myelination.

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Citations

Feb 12, 2021·The Neuroscientist : a Review Journal Bringing Neurobiology, Neurology and Psychiatry·Yasmine KamenRagnhildur T Káradóttir
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Aug 11, 2021·Neuroscience Bulletin·Lin YangZhengang Yang

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