Unknown,Transcriptomics,Genomics,Proteomics

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Adipose tissue analysis of wild-type and beta-carotene 15-15'-oxygenase 1 (Bcmo1) ko mice fed under control diet and beta-carotene diet

ABSTRACT: Cell culture studies indicate that beta-carotene-(BC)-derived apocarotenoid signaling molecules influence the activities of nuclear receptors that regulate many aspects of adipocyte physiology. Here, we analyzed the roles of the two BC metabolizing enzymes, BCMO1 and BCDO2, for this process in mouse models. Wild-type mice converted BC into retinoids and showed reduced body adiposity (by 28%), leptinemia and adipocyte size. Genome wide microarray analysis revealed a generalized decrease of mRNA expression of peroxisome proliferator-activated receptor gamma (PPARgamma) target genes. Consistently, the expression of this key transcription factor for lipogenesis was significantly reduced both on the mRNA and protein levels. This effect of BC was absent in Bcmo1-/- mice that showed increased BCDO2 expression and gamma-10gamma-apocarotenoid production. Our study evidences an important role of BC for the control of body adiposity in mice and identifies Bcmo1 as critical molecular player for the regulation of PPARgamma activity. The goal of the study was to analyze the putative differential effects of BC accumulation on Bcmo1 ko mice, and BC metabolites in wt mice. Inguinal adipose tissue gene expression profile comparing adult male and female mice under control diet and beta-carotene (BC) supplemented diet during 14 weeks. 47 mice in total. 23 wild-type (11 male/12 female) and 24 bcmo1 (12 male/12 female) mice, fed on vitamin A diet (1500 IU vit A/kg diet) or vitamin A diet supplemented with BC (1500 IU vit A/kg diet +150 mg BC/kg diet) during 14 weeks.

ORGANISM(S): Mus musculus

SUBMITTER: Jaume Amengual

PROVIDER: E-GEOD-27271 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Project description:Objective: Procyanidins are polyphenolic bioactive compounds that exert beneficial effects against obesity and its related diseases. The aim of this study was to evaluate whether the supplementation with low doses of a grape seed procyanidin extract (GSPE) to dams during pre and postnatal periods has biological effects on their offspring at youth. Design: The metabolic imprinting effect of GSPE was evaluated in 30 days-old male offspring of four groups of rats that were fed either a standard diet (STD) or a high-fat diet (HFD) and supplemented with either GSPE at 25 mg per kg of body weight/day or vehicle during pregnancy and lactation. Results: A significant increase in the adiposity index and in the weight of all the white adipose tissue depots studied (retroperitoneal â??RWAT-, mesenteric â??MWAT-, epididymal â??EWAT- and inguinal â??IWAT-) was observed in offspring of dams fed with a HFD and treated with GSPE (HFT group), compared to the offspring of dams fed with the same diet and that do not received procyanidins (HF group). HFT animals also showed a higher number of cells in the EWAT, a sharply decrease of the circulating levels of monocyte chemoattractant protein-1 (MCP-1) as well as a moderate, but significant, decrease of plasma glycerol levels. The transcriptomic analysis performed in the EWAT showed 238 genes differentially expressed between HF and HFT animals, covering an entire range of processes related with the immune function and the inflammatory response (the metabolic pathway mainly reflected in the EWAT), adipose tissue remodeling and function, lipid and glucose homeostasis and metabolism of methyl groups. Conclusion: GSPE treatment to dams fed a HFD during pregnancy and lactation increases adiposity, decreases the circulating levels of MCP-1 and modulates the expression of key genes involved in the adipose tissue metabolism of their offspring. The microarray study was performed with the EWAT RNA samples of rats from the HF and the HFT groups (n=8 animals each).

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Adipose tissue analysis of wild-type and beta-carotene 15-15'-oxygenase 1 (Bcmo1) ko mice fed under control diet and beta-carotene diet

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