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S100b treatment overcomes RAGE signaling deficits in myoblasts on advanced glycation end-product cross-linked collagen and promotes myogenic differentiation.
Olson, Lucas C; Nguyen, Tri; Sabalewski, Eleanor L; Puetzer, Jennifer L; Schwartz, Zvi; McClure, Michael J.
Afiliación
  • Olson LC; Department of Biomedical Engineering, College of Engineering, Virginia Commonwealth University, Richmond, Virginia, United States.
  • Nguyen T; Department of Gerontology, College of Health Professionals, Virginia Commonwealth University, Richmond, Virginia, United States.
  • Sabalewski EL; Department of Biomedical Engineering, College of Engineering, Virginia Commonwealth University, Richmond, Virginia, United States.
  • Puetzer JL; Department of Biomedical Engineering, College of Engineering, Virginia Commonwealth University, Richmond, Virginia, United States.
  • Schwartz Z; Department of Biomedical Engineering, College of Engineering, Virginia Commonwealth University, Richmond, Virginia, United States.
  • McClure MJ; Department of Orthopaedic Surgery, School of Medicine, Virginia Commonwealth University, Richmond, Virginia, United States.
Am J Physiol Cell Physiol ; 326(4): C1080-C1093, 2024 04 01.
Article en En | MEDLINE | ID: mdl-38314727
ABSTRACT
Advanced glycation end-products (AGEs) stochastically accrue in skeletal muscle and on collagen over an individual's lifespan, stiffening the muscle and modifying the stem cell (MuSC) microenvironment while promoting proinflammatory, antiregenerative signaling via the receptor for advanced glycation end-products (RAGEs). In the present study, a novel in vitro model was developed of this phenomenon by cross linking a 3-D collagen scaffold with AGEs and investigating how myoblasts responded to such an environment. Briefly, collagen scaffolds were incubated with d-ribose (0, 25, 40, 100, or 250 mM) for 5 days at 37°C. C2C12 immortalized mouse myoblasts were grown on the scaffolds for 6 days in growth conditions for proliferation, and 12 days for differentiation and fusion. Human primary myoblasts were also used to confirm the C2C12 data. AGEs aberrantly extended the DNA production stage of C2C12s (but not in human primary myoblasts) which is known to delay differentiation in myogenesis, and this effect was prevented by RAGE inhibition. Furthermore, the differentiation and fusion of myoblasts were disrupted by AGEs, which were associated with reductions in integrins and suppression of RAGE. The addition of S100b (RAGE agonist) recovered the differentiation and fusion of myoblasts, and the addition of RAGE inhibitors (FPS-ZM1 and Azeliragon) inhibited the differentiation and fusion of myoblasts. Our results provide novel insights into the role of the AGE-RAGE axis in skeletal muscle aging, and future work is warranted on the potential application of S100b as a proregenerative factor in aged skeletal muscle.NEW & NOTEWORTHY Collagen cross-linked by advanced glycation end-products (AGEs) induced myoblast proliferation but prevented differentiation, myotube formation, and RAGE upregulation. RAGE inhibition occluded AGE-induced myoblast proliferation, while the delivery of S100b, a RAGE ligand, recovered fusion deficits.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Reacción de Maillard / Músculo Esquelético Tipo de estudio: Prognostic_studies Límite: Aged / Animals / Humans Idioma: En Revista: Am J Physiol Cell Physiol Asunto de la revista: FISIOLOGIA Año: 2024 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Reacción de Maillard / Músculo Esquelético Tipo de estudio: Prognostic_studies Límite: Aged / Animals / Humans Idioma: En Revista: Am J Physiol Cell Physiol Asunto de la revista: FISIOLOGIA Año: 2024 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos