Validation of terminal Schwann cell gene marker expression by fluorescent in situ hybridization using RNAscope

Neurosci Lett. 2022 Feb 6;771:136468. doi: 10.1016/j.neulet.2022.136468. Epub 2022 Jan 20.


Recent RNA-seq studies have generated a new crop of putative gene markers for terminal Schwann cells (tSCs), non-myelinating glia that cap axon terminals at the vertebrate neuromuscular junction (NMJ). While compelling, these studies did not validate the expression of the novel markers using in situ hybridization techniques. Here, we use RNAscope technology to study the expression of top candidates from recent tSC and non-myelinating Schwann cell marker RNA-seq studies. Our results validate the expression of these markers at tSCs but also demonstrate that they are present at other sites in the muscle tissue, specifically, at muscle spindles and along intramuscular nerves.

Keywords: Muscle spindle; Neuromuscular junction; Non-myelinating Schwann cell; RNAscope; Terminal Schwann cell.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Female
  • In Situ Hybridization, Fluorescence / methods
  • In Situ Hybridization, Fluorescence / standards
  • Male
  • Mice
  • Mice, Inbred C57BL
  • Nerve Tissue Proteins / genetics*
  • Nerve Tissue Proteins / metabolism
  • Neuromuscular Junction / metabolism
  • RNA-Seq / methods*
  • RNA-Seq / standards
  • Reference Standards
  • Schwann Cells / metabolism*


  • Nerve Tissue Proteins