Characterization and differentiation of CD51+ Stem Leydig cells in adult mouse testes

Mol Cell Endocrinol. 2019 Aug 1:493:110449. doi: 10.1016/j.mce.2019.110449. Epub 2019 May 15.

Abstract

It was reported previously that adult mouse stem Leydig cells (SLCs) express CD51 (integrin α-chain V). However, it is still unclear whether all CD51+ cells are SLCs. In the present study, we found that CD51+ cells can be classified into two sub-groups, a weakly-staining group (CD51+) and a strongly-staining group (CD51++). The CD51+ cells expressed common SLC marker genes, including Nestin, Pdgfra and Coup-tf2, while CD51++ cells did not express these genes. Instead, they expressed macrophage markers, such as F4/80, Cd115 and Tnfa. When these cells were induced to differentiate in vitro, the CD51+ cells, but not CD51++ cells, formed Leydig cells. Overall, our results showed that although SLCs expressed CD51, not all CD51-expressing cells are SLCs. The cells that expressed high levels of CD51 are actually macrophages.

Keywords: CD51; Macrophage; Stem Leydig cells; Testis; Testosterone.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Biomarkers / metabolism
  • Cell Differentiation
  • Cells, Cultured
  • Integrin alphaV / metabolism*
  • Leydig Cells / cytology*
  • Leydig Cells / immunology
  • Macrophages / cytology
  • Macrophages / immunology
  • Male
  • Mice
  • Spermatogenesis
  • Stem Cells / cytology
  • Stem Cells / immunology*
  • Testis / cytology*
  • Testis / immunology
  • Up-Regulation

Substances

  • Biomarkers
  • Integrin alphaV