Cited by 107Muscle Physiology and DisordersMuscle metabolism and nutritionMesenchymal stem cell research

Extensive remodeling of the extracellular matrix during aging contributes to age-dependent impairments of muscle stem cell functionality

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Schüler, Svenja C., Kirkpatrick, Joanna M., Schmidt, Manuel, Santinha, Deolinda, Koch, Philipp, Di Sanzo, Simone, Cirri, Emilio, Hemberg, Martin +2 more·2021·Cell Reports

Abstract

During aging, the regenerative capacity of skeletal muscle decreases due to intrinsic changes in muscle stem cells (MuSCs) and alterations in their niche. Here, we use quantitative mass spectrometry to characterize intrinsic changes in the MuSC proteome and remodeling of the MuSC niche during aging. We generate a network connecting age-affected ligands located in the niche and cell surface receptors on MuSCs. Thereby, we reveal signaling by integrins, Lrp1, Egfr, and Cd44 as the major cell communication axes perturbed through aging. We investigate the effect of Smoc2, a secreted protein that accumulates with aging, primarily originating from fibro-adipogenic progenitors. Increased levels of Smoc2 contribute to the aberrant Integrin beta-1 (Itgb1)/mitogen-activated protein kinase (MAPK) signaling observed during aging, thereby causing impaired MuSC functionality and muscle regeneration. By connecting changes in the proteome of MuSCs to alterations of their niche, our work will enable a better understanding of how MuSCs are affected during aging.

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Crossref · 10.1016/j.celrep.2021.109223

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  • In muscle, quantitative proteomics studies have identified changes in the tissue, notably in the ECM composition.

    “In muscle, quantitative proteomics studies have also identified changes in the tissue, notably in the ECM composition66.”
  • Proteomic studies in old MuSCs reveal changes in integrin signalling during ageing.

    “Moreover, proteomic studies in old MuSCs reveal changes in integrin signalling during ageing66.”
  • In skeletal muscle, ECM components also change with ageing.

    “In skeletal muscle, ECM components also change with ageing66.”
  • In muscle, quantitative proteomic studies reveal striking remodelling in ECM during ageing, and those changes can influence MuSC function.

    “In muscle, quantitative proteomic studies also reveal striking remodelling in ECM during ageing66,82, and those changes can influence MuSC function.”

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Authors
Schüler, S. C., Kirkpatrick, J. M., Schmidt, M., Santinha, D., Koch, P., Di Sanzo, S., Cirri, E., Hemberg, M., Ori, A., & von Maltzahn, J.
Affiliations
  • Leibniz Institute on Aging - Fritz Lipmann Institute (FLI) (DE)
  • Centro de Neurociências e Biologia Celular (PT)
  • Wellcome Sanger Institute (GB)
Venue
Cell Reports
Publisher
Elsevier BV
Published
2021-06
Volume
35
Issue
10
Pages
109223
ISSN
2211-1247 (ISSN-L)
OpenAlex
W3172313408
Cited by
106
References
89
Citations by year
2026: 23 · 2025: 23 · 2024: 18 · 2023: 24 · 2022: 16 · 2021: 2
FWCI
4.79
Type
journal article
Language
en
Open access
Locations
  • Cell Reports (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • Estudo Geral (Universidad de Coimbra) (submittedVersion, cc-by-nc-nd)
  • Portuguese National Funding Agency for Science, Research and Technology (RCAAP Project by FCT) (submittedVersion, cc-by-nc-nd)
  • Informationszentrum Lebenswissenschaften (ZB MED) (submittedVersion, cc-by-nc-nd)
Funders
  • Wellcome Trust
  • Deutsches Zentrum für Herz-Kreislaufforschung (81X2800193)
  • Deutsche Forschungsgemeinschaft (GRK 2155, MA-3975/2-1)
  • Leibniz-Gemeinschaft
  • Else Kröner-Fresenius-Stiftung (2019_A79)
  • Fritz Thyssen Stiftung
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Muscle metabolism and nutrition
  • Health Sciences › Medicine › Genetics › Mesenchymal stem cell research
Keywords
muscle stem cells, aging, extracellular matrix remodeling, muscle regeneration, muscle stem cell niche, integrin signaling, SMOC2, LRP1, EGFR, CD44, fibro-adipogenic progenitors
MeSH terms
Cell Differentiation, Extracellular Matrix, Humans, Stem Cells, Integrins, Muscle, Skeletal

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