Myelin transcription factor 1 (Myt1) expression in demyelinated lesions of rodent and human CNS

Adam C. Vana, Claudia F. Lucchinetti, Tuan Q. Le, Regina C. Armstrong

Research output: Contribution to journalArticlepeer-review

35 Scopus citations

Abstract

Myelin transcription factor 1 (Myt1) is a zinc-finger DNA binding protein that influences developing oligodendrocyte progenitor (OP) cell proliferation, differentiation, and myelin gene transcription in vitro. The potential of Myt1 to play a role in OP responses leading to remyelination was examined using murine hepatitis virus strain A59 (MHV) to induce spinal cord demyelination and potential relevance to human pathology was evaluated in multiple sclerosis (MS) lesions. In MHV-infected mice, the density of Myt1 expressing cells markedly increased in lesioned areas of spinal cord white matter. Myt1 expressing cells proliferated most extensively during active demyelination and subsequently accumulated to maximal levels during early remyelination. Cells with nuclear Myt1 immunoreactivity were mainly OP cells, identified by co-localization with platelet-derived growth factor alpha receptor, with additional phenotypes being either oligodendrocytes or neural stem cells, identified by CC1 antigen and Musashi1, respectively. The density of OP cells expressing Myt1 was significantly increased in white matter of MHV-infected mice during demyelination and early remyelination then as remyelination advanced the values returned to levels comparable to PBS-injected control mice. In MHV lesions, Myt1 was not expressed in astrocytes, lymphocytes, or macrophage/microglial cells. MS lesions demonstrated increased Myt1 expression in both the periplaque white matter adjacent to lesions and within early remyelinating lesions. These results suggest a potential role for Myt1 in the regeneration of oligodendrocyte lineage cells in response to demyelination.

Original languageEnglish (US)
Pages (from-to)687-697
Number of pages11
JournalGlia
Volume55
Issue number7
DOIs
StatePublished - May 2007

Keywords

  • Multiple sclerosis
  • Myelin
  • Oligodendrocyte progenitor
  • Oligodendroglia
  • Remyelination

ASJC Scopus subject areas

  • Neurology
  • Cellular and Molecular Neuroscience

Fingerprint Dive into the research topics of 'Myelin transcription factor 1 (Myt1) expression in demyelinated lesions of rodent and human CNS'. Together they form a unique fingerprint.

Cite this