Lgr5 marks post-mitotic, lineage restricted cerebellar granule neurons during postnatal development

Tyler E. Miller, Jun Wang, Kumar Sukhdeo, Craig Horbinski, Paul J. Tesar, Robert J. Wechsler-Reya, Jeremy N. Rich

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

Wnt signaling regulates self-renewal and fate commitment of stem and progenitor cells in development and homeostasis. Leucine-rich repeat-containing G-protein coupled receptor 5 (Lgr5) is a co-receptor for Wnt signaling that marks highly proliferative stem and progenitor cells in many epithelial tissue types. Wnt signaling instructs neural developmental and homeostatic processes; however, Lgr5 expression in the developing and adult brain has not been characterized. Here we report that Lgr5 is expressed in the postnatal cerebellum during the maturation and synaptogenesis of cerebellar granule neurons (CGNs), processes controlled by Wnt signaling. Using a transgenic reporter mouse for in vivo Lgr5 expression analysis and lineage tracing, we reveal that Lgr5 specifically identified CGNs and was restricted temporally to the CGN maturation phase within the internal granule layer, but absent in the adult brain. Cells marked by Lgr5 were lineage restricted, post-mitotic and long-lived. The ligand for Lgr5, R-spondin, was secreted in a paracrine fashion that evolved during the maturation of CGNs, which coincided with the Lgr5 expression pattern. Our findings provide potential new insight into the critical regulation of Wnt signaling in the developing cerebellum and support a novel role for Lgr5 in the regulation of post-mitotic cells.

Original languageEnglish (US)
Article numbere114433
JournalPloS one
Volume9
Issue number12
DOIs
StatePublished - Dec 10 2014

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)
  • General

Fingerprint Dive into the research topics of 'Lgr5 marks post-mitotic, lineage restricted cerebellar granule neurons during postnatal development'. Together they form a unique fingerprint.

Cite this