Mitochondrial fission is associated with UCP1 activity in human brite/beige adipocytes

OBJECTIVE: Thermogenic adipocytes (i.e. brown or brite/beige adipocytes) are able to burn large amounts of lipids and carbohydrates as a result of highly active mitochondria and enhanced uncoupled respiration, due to UCP1 activity. Although mitochondria are the key organelles for this thermogenic fu...

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Detalles Bibliográficos
Autores principales: Pisani, Didier F., Barquissau, Valentin, Chambard, Jean-Claude, Beuzelin, Diane, Ghandour, Rayane A., Giroud, Maude, Mairal, Aline, Pagnotta, Sophie, Cinti, Saverio, Langin, Dominique, Amri, Ez-Zoubir
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2017
Materias:
Original Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5784321/
https://www.ncbi.nlm.nih.gov/pubmed/29198749
http://dx.doi.org/10.1016/j.molmet.2017.11.007
Descripción
Sumario:OBJECTIVE: Thermogenic adipocytes (i.e. brown or brite/beige adipocytes) are able to burn large amounts of lipids and carbohydrates as a result of highly active mitochondria and enhanced uncoupled respiration, due to UCP1 activity. Although mitochondria are the key organelles for this thermogenic function, limited human data are available. METHODS/RESULTS: We characterized changes in the mitochondrial function of human brite adipocytes, using hMADS cells as a model of white- to brite-adipocyte conversion. We found that profound molecular modifications were associated with morphological changes in mitochondria. The fission process was partly driven by the DRP1 protein, which also promoted mitochondrial uncoupling. CONCLUSION: Our data demonstrate that white-to-brite conversion of human adipocytes relies on molecular, morphological and functional changes in mitochondria, which enable brite/beige cells to carry out thermogenesis.

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