Small-molecule-induced epigenetic rejuvenation promotes SREBP condensation and overcomes barriers to CNS myelin regeneration

Xuezhao Liu, Dazhuan Eric Xin, Xiaowen Zhong, Chuntao Zhao, Zhidan Li, Liguo Zhang, Adam J. Dourson, Lindsay Lee, Shreya Mishra, Arman E. Bayat, Eva Nicholson, William L. Seibel, Bingfang Yan, Joel Mason, Bradley J. Turner, David G. Gonsalvez, William Ong, Sing Yian Chew, Balaram Ghosh, Sung Ok YoonMei Xin, Zhigang He, Jason Tchieu, Michael Wegner, Klaus Armin Nave, Robin J.M. Franklin, Ranjan Dutta, Bruce D. Trapp, Ming Hu, Matthew A. Smith, Michael P. Jankowski, Samantha K. Barton, Xuelian He*, Q. Richard Lu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

Remyelination failure in diseases like multiple sclerosis (MS) was thought to involve suppressed maturation of oligodendrocyte precursors; however, oligodendrocytes are present in MS lesions yet lack myelin production. We found that oligodendrocytes in the lesions are epigenetically silenced. Developing a transgenic reporter labeling differentiated oligodendrocytes for phenotypic screening, we identified a small-molecule epigenetic-silencing-inhibitor (ESI1) that enhances myelin production and ensheathment. ESI1 promotes remyelination in animal models of demyelination and enables de novo myelinogenesis on regenerated CNS axons. ESI1 treatment lengthened myelin sheaths in human iPSC-derived organoids and augmented (re)myelination in aged mice while reversing age-related cognitive decline. Multi-omics revealed that ESI1 induces an active chromatin landscape that activates myelinogenic pathways and reprograms metabolism. Notably, ESI1 triggered nuclear condensate formation of master lipid-metabolic regulators SREBP1/2, concentrating transcriptional co-activators to drive lipid/cholesterol biosynthesis. Our study highlights the potential of targeting epigenetic silencing to enable CNS myelin regeneration in demyelinating diseases and aging.

Original languageEnglish
Pages (from-to)2465-2484.e22
JournalCell
Volume187
Issue number10
DOIs
Publication statusPublished - May 9 2024
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2024 Elsevier Inc.

ASJC Scopus Subject Areas

  • General Biochemistry,Genetics and Molecular Biology

Keywords

  • aging
  • chromatin remodeling
  • Epigenetic silencing
  • HDAC3 Inhibition
  • lipid/cholesterol biosynthesis
  • multiple sclerosis
  • myelin regeneration
  • oligodendrocyte
  • small molecule
  • SREBP condensation

Fingerprint

Dive into the research topics of 'Small-molecule-induced epigenetic rejuvenation promotes SREBP condensation and overcomes barriers to CNS myelin regeneration'. Together they form a unique fingerprint.

Cite this