Molecular characterization of prospectively isolated multipotent mesenchymal progenitors provides new insight into the cellular identity of mesenchymal stem cells in mouse bone marrow

Hong Qian, Aurora Badaloni, Francesca Chiara, Jenny Stjernberg, Naresh Polisetti, Kristian Nihlberg, G. Giacomo Consalez, Mikael Sigvardsson

Research output: Contribution to journalArticlepeer-review

Abstract

Despite great progress in the identification of mesenchymal stem cells (MSCs) from bone marrow (BM), our knowledge of their in vivo cellular identity remains limited. We report here that cells expressing the transcription factor Ebf2 in adult BM display characteristics of MSCs. The Ebf2+ cells are highly clonal and physiologically quiescent. In vivo lineage-tracing experiments, single cell clone transplantations, and in vitro differentiation assays revealed their self-renewal and multilineage differentiation capacity. Gene expression analysis of the freshly sorted Ebf2+ cells demonstrated the expression of genes previously reported to be associated with MSCs and the coexpression of multiple lineage-associated genes at the single-cell level. Thus, Ebf2 expression is not restricted to committed osteoblast progenitor cells but rather marks a multipotent mesenchymal progenitor cell population in adult mouse BM. These cells do not appear to completely overlap the previously reported MSC populations. These findings provide new insights into the in vivo cellular identity and molecular properties of BM mesenchymal stem and progenitor cells.

Original languageEnglish
Pages (from-to)661-677
Number of pages17
JournalMolecular and Cellular Biology
Volume33
Issue number4
DOIs
Publication statusPublished - Feb 2013

ASJC Scopus subject areas

  • Molecular Biology
  • Cell Biology

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