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Coenzyme Q as an antiadipogenic factor.

By Sandy Bour, Maria-Carmen Carmona, Anne Galinier, Sylvie Caspar-Bauguil, Luc Van Gaal, Bart Staels, Luc Pénicaud and Louis Casteilla


WOS: 000285876900007International audienceCoenzyme Q (CoQ) is not only the single antioxidant synthesized in humans but also an obligatory element of mitochondrial functions. We have previously reported CoQ deficiency in white adipose tissue of ob/ob mice. We sought to determine (i) whether this deficit exists in all species and its relevance in human obesity and (ii) to what extent CoQ could be involved in adipocyte differentiation. Here we identified in rodents as well as in humans a specific very strong nonlinear negative correlation between CoQ content in subcutaneous adipose tissue and obesity indexes. This striking correlation reveals a threshold value similar in both species. This relative deficit in CoQ content in adipose tissue rapidly took place during the time course of high-fat-diet-induced obesity in mice. Adipocyte differentiation was assessed in vitro using the preadipocyte 3T3-F442A cell line. When CoQ synthesis was inhibited by a pharmacological approach using chlorobenzoic acid, this strongly triggered adipose differentiation. In contrast, adipogenesis was strongly inhibited when a long-term increase in CoQ content was obtained by overexpressing human 4-hydroxy benzoate acid polyprenyltransferase gene. Altogether, these data suggest that a strict level of CoQ remains essential for adipocyte differentiation, and its impairment is associated with obesity

Topics: mitochondrial encephalomyopathy, uncoupling protein 2, coq(10) deficiency, oxidative stress, q(10) deficiency, adipose tissue, obesity, rosiglitazone, muscle, expression, MESH: Adipocytes, MESH: Adipogenesis, MESH: Enzyme Inhibitors, MESH: Female, MESH: Humans, MESH: Male, MESH: Mice, MESH: Mice, Inbred C57BL, MESH: Mice, Obese, MESH: Obesity, MESH: Organ Size, MESH: Quinones, MESH: Adipose Tissue, MESH: Reactive Oxygen Species, MESH: Ubiquinone, MESH: alpha-Tocopherol, MESH: Alkyl and Aryl Transferases, MESH: Animals, MESH: Antioxidants, MESH: Body Weight, MESH: Cell Differentiation, MESH: Cell Line, MESH: Dietary Fats, [SDV]Life Sciences [q-bio]
Publisher: 'Mary Ann Liebert Inc'
Year: 2011
DOI identifier: 10.1089/ars.2010.3350
OAI identifier: oai:HAL:hal-00825015v1
Provided by: HAL-uB
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