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Nutrients 2016, 8(10), 640; doi:10.3390/nu8100640

Effect of Green Tea Extract on Systemic Metabolic Homeostasis in Diet-Induced Obese Mice Determined via RNA-Seq Transcriptome Profiles

1
Department of Food Sciences and Nutrition, Kyungpook National University, 1370 Sankyuk Dong Puk-Ku, Daegu 702-701, Korea
2
Center for Food and Nutritional Genomics Research, Kyungpook National University, 1370 Sankyuk Dong Puk-Ku, Daegu 702-701, Korea
*
Author to whom correspondence should be addressed.
Received: 13 July 2016 / Revised: 30 September 2016 / Accepted: 11 October 2016 / Published: 14 October 2016
(This article belongs to the Special Issue Health-Promoting Components of Fruits and Vegetables in Human Health)
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Abstract

Green tea (GT) has various health effects, including anti-obesity properties. However, the multiple molecular mechanisms of the effects have not been fully determined. The aim of this study was to elucidate the anti-obesity effects of GT via the analysis of its metabolic and transcriptional responses based on RNA-seq profiles. C57BL/6J mice were fed a normal, high-fat (60% energy as fat), or high-fat + 0.25% (w/w) GT diet for 12 weeks. The GT extract ameliorated obesity, hepatic steatosis, dyslipidemia, and insulin resistance in diet-induced obesity (DIO) mice. GT supplementation resulted in body weight gain reduction than mice fed high-fat through enhanced energy expenditure, and reduced adiposity. The transcriptome profiles of epididymal white adipose tissue (eWAT) suggested that GT augments transcriptional responses to the degradation of branched chain amino acids (BCAAs), as well as AMP-activated protein kinase (AMPK) signaling, which suggests enhanced energy homeostasis. Our findings provide some significant insights into the effects of GT for the prevention of obesity and its comorbidities. We demonstrated that the GT extract contributed to the regulation of systemic metabolic homeostasis via transcriptional responses to not only lipid and glucose metabolism, but also amino acid metabolism via BCAA degradation in the adipose tissue of DIO mice. View Full-Text
Keywords: energy expenditure; green tea extract; obesity; RNA-seq; transcriptome energy expenditure; green tea extract; obesity; RNA-seq; transcriptome
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Choi, J.-Y.; Kim, Y.J.; Ryu, R.; Cho, S.-J.; Kwon, E.-Y.; Choi, M.-S. Effect of Green Tea Extract on Systemic Metabolic Homeostasis in Diet-Induced Obese Mice Determined via RNA-Seq Transcriptome Profiles. Nutrients 2016, 8, 640.

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