Tracking of Nascent Matrix Deposition during Muscle Stem Cell Activation across Lifespan Using Engineered Hydrogels.

Autor: Duran P; Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA.; BioInterfaces Institute, University of Michigan, Ann Arbor, MI, 48109, USA., Yang BA; Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA.; BioInterfaces Institute, University of Michigan, Ann Arbor, MI, 48109, USA., Plaster E; Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA., Eiken M; Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA., Loebel C; Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA.; Department of Materials Science & Engineering, University of Michigan, Ann Arbor, MI, 48109, USA., Aguilar CA; Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA.; BioInterfaces Institute, University of Michigan, Ann Arbor, MI, 48109, USA.; Program in Cellular and Molecular Biology, University of Michigan, Ann Arbor, MI, 48109, USA.
Jazyk: angličtina
Zdroj: Advanced biology [Adv Biol (Weinh)] 2024 Jun; Vol. 8 (6), pp. e2400091. Date of Electronic Publication: 2024 Apr 14.
DOI: 10.1002/adbi.202400091
Abstrakt: Adult stem cells occupy a niche that contributes to their function, but how stem cells rebuild their microenvironment after injury remains an open-ended question. Herein, biomaterial-based systems and metabolic labeling are utilized to evaluate how skeletal muscle stem cells deposit extracellular matrix. Muscle stem cells and committed myoblasts are observed to generate less nascent matrix than muscle resident fibro-adipogenic progenitors. When cultured on substrates that matched the stiffness of physiological uninjured and injured muscles, muscle stem cells increased nascent matrix deposition with activation kinetics. Reducing the ability to deposit nascent matrix by an inhibitor of vesicle trafficking (Exo-1) attenuated muscle stem cell function and mimicked impairments observed from muscle stem cells isolated from old muscles. Old muscle stem cells are observed to deposit less nascent matrix than young muscle stem cells, which is rescued with therapeutic supplementation of insulin-like growth factors. These results highlight the role of nascent matrix production with muscle stem cell activation.
(© 2024 The Authors. Advanced Biology published by Wiley‐VCH GmbH.)
Databáze: MEDLINE
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