Powerful Homeostatic Control of Oligodendroglial Lineage by PDGFRα in Adult Brain

Thành Chung Đặng, Yoko Ishii, Van De Nguyen, Seiji Yamamoto*, Takeru Hamashima, Noriko Okuno, Quang Linh Nguyen, Yang Sang, Noriaki Ohkawa, Yoshito Saitoh, Mohammad Shehata, Nobuyuki Takakura, Toshihiko Fujimori, Kaoru Inokuchi, Hisashi Mori, Johanna Andrae, Christer Betsholtz, Masakiyo Sasahara

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

48 Scopus citations

Abstract

Oligodendrocyte progenitor cells (OPCs) are widely distributed cells of ramified morphology in adult brain that express PDGFRα and NG2. They retain mitotic activities in adulthood and contribute to oligodendrogenesis and myelin turnover; however, the regulatory mechanisms of their cell dynamics in adult brain largely remain unknown. Here, we found that global Pdgfra inactivation in adult mice rapidly led to elimination of OPCs due to synchronous maturation toward oligodendrocytes. Surprisingly, OPC densities were robustly reconstituted by the active expansion of Nestin + immature cells activated in meninges and brain parenchyma, as well as a few OPCs that escaped from Pdgfra inactivation. The multipotent immature cells were induced in the meninges of Pdgfra-inactivated mice, but not of control mice. Our findings revealed powerful homeostatic control of adult OPCs, engaging dual cellular sources of adult OPC formation. These properties of the adult oligodendrocyte lineage and the alternative OPC source may be exploited in regenerative medicine.

Original languageEnglish
Pages (from-to)1073-1089.e5
JournalCell Reports
Volume27
Issue number4
DOIs
StatePublished - 2019/04/23

Keywords

  • PDGFRα
  • adult brain
  • differentiation
  • mesenchymal cell
  • oligodendrocyte progenitor cell
  • pericyte
  • regeneration

ASJC Scopus subject areas

  • General Biochemistry, Genetics and Molecular Biology

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