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Sox11 is enriched in myogenic progenitors but dispensable for development and regeneration of the skeletal muscle.

ABSTRACT: Transcription factors (TFs) play key roles in regulating differentiation and function of stem cells, including muscle satellite cells (MuSCs), a resident stem cell population responsible for postnatal regeneration of the skeletal muscle. Sox11 belongs to the Sry-related HMG-box (SOX) family of TFs that play diverse roles in stem cell behavior and tissue specification. Analysis of single-cell RNA-sequencing (scRNA-seq) datasets identify a specific enrichment of Sox11 mRNA in differentiating but not quiescent MuSCs. Consistent with the scRNA-seq data, Sox11 levels increase during differentiation of murine primary myoblasts in vitro. scRNA-seq data comparing muscle regeneration in young and old mice further demonstrate that Sox11 expression is reduced in aged MuSCs. Age-related decline of Sox11 expression is associated with reduced chromatin contacts within the topologically associating domains. Unexpectedly, Myod1^Cre-driven deletion of Sox11 in embryonic myoblasts has no effects on muscle development and growth, resulting in apparently healthy muscles that regenerate normally. Pax7^CreER- or Rosa26^CreER- driven (MuSC-specific or global) deletion of Sox11 in adult mice similarly has no effects on MuSC differentiation or muscle regeneration. These results identify Sox11 as a novel myogenic differentiation marker with reduced expression in quiescent and aged MuSCs, but the specific function of Sox11 in myogenesis remains to be elucidated.

SUBMITTER: Oprescu SN

PROVIDER: S-EPMC10498607 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature

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Sox11 is enriched in myogenic progenitors but dispensable for development and regeneration of the skeletal muscle.

Oprescu Stephanie N SN Baumann Nick N Chen Xiyue X Sun Qiang Q Zhao Yu Y Yue Feng F Wang Huating H Kuang Shihuan S

Skeletal muscle 20230913 1

Transcription factors (TFs) play key roles in regulating differentiation and function of stem cells, including muscle satellite cells (MuSCs), a resident stem cell population responsible for postnatal regeneration of the skeletal muscle. Sox11 belongs to the Sry-related HMG-box (SOX) family of TFs that play diverse roles in stem cell behavior and tissue specification. Analysis of single-cell RNA-sequencing (scRNA-seq) datasets identify a specific enrichment of Sox11 mRNA in differentiating but n ...[more]

PMID: 37705115

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Sox11 is enriched in myogenic progenitors but dispensable for development and regeneration of the skeletal muscle.

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Sox11 is enriched in myogenic progenitors but dispensable for development and regeneration of the skeletal muscle.

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