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Título: | Isolation of Mitochondria from Mouse Skeletal Muscle for Respirometric Assays |
Autor: | Hernández-Camacho, Juan Diego; Vicente-García, Cristina CSIC; Sánchez-Cuesta, Ana CSIC ORCID; Fernández-Ayala, Daniel J. M.; Carvajal, Jaime J. CSIC ORCID; Navas, Plácido CSIC ORCID | Fecha de publicación: | 10-feb-2022 | Editor: | MYJoVE Corporation | Citación: | Journal of visualized experiments: JoVE 2022: 63336 (2022) | Resumen: | Most of the cell's energy is obtained through the degradation of glucose, fatty acids, and amino acids by different pathways that converge on the mitochondrial oxidative phosphorylation (OXPHOS) system, which is regulated in response to cellular demands. The lipid molecule Coenzyme Q (CoQ) is essential in this process by transferring electrons to complex III in the electron transport chain (ETC) through constant oxidation/reduction cycles. Mitochondria status and, ultimately, cellular health can be assessed by measuring ETC oxygen consumption using respirometric assays. These studies are typically performed in established or primary cell lines that have been cultured for several days. In both cases, the respiration parameters obtained may have deviated from normal physiological conditions in any given organ or tissue. Additionally, the intrinsic characteristics of cultured single fibers isolated from skeletal muscle impede this type of analysis. This paper presents an updated and detailed protocol for the analysis of respiration in freshly isolated mitochondria from mouse skeletal muscle. We also provide solutions to potential problems that could arise at any step of the process. The method presented here could be applied to compare oxygen consumption rates in diverse transgenic mouse models and study the mitochondrial response to drug treatments or other factors such as aging or sex. This is a feasible method to respond to crucial questions about mitochondrial bioenergetics metabolism and regulation. | Versión del editor: | http://dx.doi.org/10.3791/63336 | URI: | http://hdl.handle.net/10261/281374 | DOI: | 10.3791/63336 | Identificadores: | doi: 10.3791/63336 e-issn: 1940-087X |
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Isolation of Mitochondria_Hernández_PV_EMB_Art2022.pdf | 892,65 kB | Adobe PDF | Visualizar/Abrir |
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