Hypertrophic chondrocytes serve as a reservoir for marrow-associated skeletal stem and progenitor cells, osteoblasts, and adipocytes during skeletal development

© 2022, Long et al..

Hypertrophic chondrocytes give rise to osteoblasts during skeletal development; however, the process by which these non-mitotic cells make this transition is not well understood. Prior studies have also suggested that skeletal stem and progenitor cells (SSPCs) localize to the surrounding periosteum and serve as a major source of marrow-associated SSPCs, osteoblasts, osteocytes, and adipocytes during skeletal development. To further understand the cell transition process by which hypertrophic chondrocytes contribute to osteoblasts or other marrow associated cells, we utilized inducible and constitutive hypertrophic chondrocyte lineage tracing and reporter mouse models (Col10a1CreERT2; Rosa26fs-tdTomato and Col10a1Cre; Rosa26fs-tdTomato) in combination with a PDGFRaH2B-GFP transgenic line, single-cell RNA-sequencing, bulk RNA-sequencing, immunofluorescence staining, and cell transplantation assays. Our data demonstrate that hypertrophic chondrocytes undergo a process of dedifferentiation to generate marrow-associated SSPCs that serve as a primary source of osteoblasts during skeletal development. These hypertrophic chondrocyte-derived SSPCs commit to a CXCL12-abundant reticular (CAR) cell phenotype during skeletal development and demonstrate unique abilities to recruit vasculature and promote bone marrow establishment, while also contributing to the adipogenic lineage.

Medienart:

E-Artikel

Erscheinungsjahr:

2022

Erschienen:

2022

Enthalten in:

Zur Gesamtaufnahme - volume:11

Enthalten in:

eLife - 11(2022) vom: 18. Feb.

Sprache:

Englisch

Beteiligte Personen:

Long, Jason T [VerfasserIn]
Leinroth, Abigail [VerfasserIn]
Liao, Yihan [VerfasserIn]
Ren, Yinshi [VerfasserIn]
Mirando, Anthony J [VerfasserIn]
Nguyen, Tuyet [VerfasserIn]
Guo, Wendi [VerfasserIn]
Sharma, Deepika [VerfasserIn]
Rouse, Douglas [VerfasserIn]
Wu, Colleen [VerfasserIn]
Cheah, Kathryn Song Eng [VerfasserIn]
Karner, Courtney M [VerfasserIn]
Hilton, Matthew J [VerfasserIn]

Links:

Volltext

Themen:

63231-63-0
Adipocytes
Bone marrow
Developmental biology
Hypertrophic chondrocytes
Journal Article
Mouse
Osteoblasts
Progenitor cells
RNA
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
Skeletal stem

Anmerkungen:

Date Completed 29.04.2022

Date Revised 29.04.2022

published: Electronic

GEO: GSE179174, GSE190616, GSE179148

Citation Status MEDLINE

doi:

10.7554/eLife.76932

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM337113645