허동은(Oregon Health & Science University) | 노화에 따른 희소돌기아교 전구세포 (oligodendrocyte precursor cell) 전사체 변화 [Nature Aging] | 웨비나

학술웨비나 개최완료

노화에 따른 희소돌기아교 전구세포 (oligodendrocyte precursor cell) 전사체 변화 [Nature Aging]

조회1114

2025년 05월 19일 (월) 오전 11시
허동은(Oregon Health & Science University)

개요

							Oligodendrocyte progenitor cells (OPCs) are highly dynamic, widely distributed glial cells of the central nervous system responsible for generating myelinating oligodendrocytes throughout life. However, the rates of OPC proliferation and differentiation decline dramatically with aging, which may impair homeostasis, remyelination and adaptive myelination during learning. To determine how aging influences OPCs, we generated a novel transgenic mouse line (Matn4-mEGFP) and performed single-cell RNA sequencing, providing enhanced resolution of transcriptional changes during key transitions from quiescence to proliferation and differentiation across the lifespan. We found that aging induces distinct transcriptomic changes in OPCs in different states, including enhanced activation of HIF-1α and WNT pathways. 

Pharmacological inhibition of these pathways in aged OPCs was sufficient to increase their ability to differentiate in vitro. Ultimately, Matn4-mEGFP mouse line and the sequencing dataset of cortical OPCs across ages will help to define the molecular changes guiding OPC behavior in various physiological and pathological contexts.