Journal
SCIENTIFIC REPORTS
Volume 7, Issue -, Pages -Publisher
NATURE PORTFOLIO
DOI: 10.1038/s41598-017-07858-6
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- National Natural Science Foundation of China [81273093, 81402694]
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High-fat diet-induced hypothalamic metabolic inflammation is emerging as a cause for the development of obesity. It is acknowledged that Toll-like receptor4 (TLR4) signaling plays a crucial role in triggering of the hypothalamic metabolic inflammation during the course of diet-induced obesity. Whether hypothalamic arcuate nucleus (ARC)-restricted TLR4 knockdown improves obesity-related metabolic disorders remains unexplored. In this study, we used TLR4 shRNA lentiviral particles to suppress the TLR4 expression in the hypothalamic ARC of diet-induced obese rat model by stereotaxic injection. Our results demonstrate that ARC-restricted TLR4 knockdown protects obese rats from diet-induced weight gain and energy intake, from diet-induced impaired glucose homeostasis and peripheral insulin resistance, and from high-fat diet-induced hepatic steatosis and adipocyte hypertrophy. Thus, we define ARC-restricted TLR4 knockdown as a potential strategy to combat metabolic disorders associated with obesity.
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