Hox11 expressing regional skeletal stem cells are progenitors for osteoblasts, chondrocytes and adipocytes throughout life

Kyriel M. Pineault, Jane Y. Song, Kenneth M. Kozloff, Daniel Lucas and Deneen M. Wellik ()
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Kyriel M. Pineault: University of Wisconsin-Madison
Jane Y. Song: University of Michigan
Kenneth M. Kozloff: University of Michigan
Daniel Lucas: Cincinnati Children’s Medical Center
Deneen M. Wellik: University of Wisconsin-Madison

Nature Communications, 2019, vol. 10, issue 1, 1-15

Abstract: Abstract Multipotent mesenchymal stromal cells (MSCs) are required for skeletal formation, maintenance, and repair throughout life; however, current models posit that postnatally arising long-lived adult MSCs replace transient embryonic progenitor populations. We previously reported exclusive expression and function of the embryonic patterning transcription factor, Hoxa11, in adult skeletal progenitor-enriched MSCs. Here, using a newly generated Hoxa11-CreERT2 lineage-tracing system, we show Hoxa11-lineage marked cells give rise to all skeletal lineages throughout the life of the animal and persist as MSCs. Hoxa11 lineage-positive cells give rise to previously described progenitor-enriched MSC populations marked by LepR-Cre and Osx-CreER, placing them upstream of these populations. Our studies establish that Hox-expressing cells are skeletal stem cells that arise from the earliest stages of skeletal development and self-renew throughout the life of the animal.

Date: 2019
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Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-11100-4

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DOI: 10.1038/s41467-019-11100-4

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