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dc.contributor.author Castro-Sepulveda, Mauricio
dc.contributor.author Tuñón-Suárez, Mauro
dc.contributor.author Rosales-Soto, Giovanni
dc.contributor.author Vargas-Foitzick, Ronald
dc.contributor.author Deldicque, Louise
dc.contributor.author Zbinden-Foncea, Hermann
dc.date.accessioned 2024-09-26T00:43:43Z
dc.date.available 2024-09-26T00:43:43Z
dc.date.issued 2023
dc.identifier.issn 2296-634X
dc.identifier.uri https://repositorio.uss.cl/handle/uss/13282
dc.description Publisher Copyright: Copyright © 2023 Castro-Sepulveda, Tuñón-Suárez, Rosales-Soto, Vargas-Foitzick, Deldicque and Zbinden-Foncea.
dc.description.abstract In skeletal muscle (SkM), a reduced mitochondrial elongate phenotype is associated with several metabolic disorders like type 2 diabetes mellitus (T2DM). However, the mechanisms contributing to this reduction in mitochondrial elongate phenotype in SkM have not been fully elucidated. It has recently been shown in a SkM cell line that toll-like receptor 4 (TLR4) contributes to the regulation of mitochondrial morphology. However, this has not been investigated in human SkM. Here we found that in human SkM biopsies, TLR4 protein correlated negatively with Opa1 (pro-mitochondrial fusion protein). Moreover, the incubation of human myotubes with LPS reduced mitochondrial size and elongation and induced abnormal mitochondrial cristae, which was prevented with the co-incubation of LPS with TAK242. Finally, T2DM myotubes were found to have reduced mitochondrial elongation and mitochondrial cristae density. Mitochondrial morphology, membrane structure, and insulin-stimulated glucose uptake were restored to healthy levels in T2DM myotubes treated with TAK242. In conclusion, mitochondrial morphology and mitochondrial cristae seem to be regulated by the TLR4 pathway in human SkM. Those mitochondrial alterations might potentially contribute to insulin resistance in the SkM of patients with T2DM. en
dc.language.iso eng
dc.relation.ispartof vol. 11 Issue: Pages:
dc.source Frontiers in Cell and Developmental Biology
dc.title Regulation of mitochondrial morphology and cristae architecture by the TLR4 pathway in human skeletal muscle en
dc.type Artículo
dc.identifier.doi 10.3389/fcell.2023.1212779
dc.publisher.department Facultad de Ciencias de la Educación
dc.publisher.department Facultad de Educación


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