Myoseverin, a microtubule-binding molecule with novel cellular effects

Nat Biotechnol. 2000 Mar;18(3):304-8. doi: 10.1038/73753.


A new microtubule-binding molecule, myoseverin, was identified from a library of 2,6,9-trisubstituted purines in a morphological differentiation screen. Myoseverin induces the reversible fission of multinucleated myotubes into mononucleated fragments. Myotube fission promotes DNA synthesis and cell proliferation after removal of the compound and transfer of the cells to fresh growth medium. Transcriptional profiling and biochemical analysis indicate that myoseverin alone does not reverse the biochemical differentiation process. Instead, myoseverin affects the expression of a variety of growth factor, immunomodulatory, extracellular matrix-remodeling, and stress response genes, consistent with the activation of pathways involved in wound healing and tissue regeneration.

MeSH terms

  • Actins / metabolism
  • Animals
  • Biotinylation
  • Cell Cycle
  • Cell Division
  • Cell Line
  • Cytoskeleton / metabolism
  • Flow Cytometry
  • Gene Library
  • Immunohistochemistry
  • In Situ Nick-End Labeling
  • Mice
  • Microscopy, Phase-Contrast
  • Microtubules / metabolism*
  • Peptide Library
  • Protein Binding
  • Purines / chemistry
  • Regeneration / physiology
  • Transcription, Genetic
  • Tubulin / metabolism
  • Wound Healing / physiology


  • Actins
  • Peptide Library
  • Purines
  • Tubulin