Rsk4 Mediates Brain FGF19 Signaling to Constrain Diet-Induced Obesity in Mice.

Li, Chaonan; Gu, Kaiyue; Huang, Ying; Wei, Lai; Qiu, Qin; Feng, Lei; Zhang, Biying; Wang, Saiya et al. · Diabetes · 2026

basic_science · Level V

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Abstract

Ribosomal S6 kinase 4 (Rsk4) is predominantly expressed in hypothalamic neurons. Rsk4 is negligible for maintaining energy homeostasis in mice. Loss of Rsk4 promotes diet-induced obesity and related metabolic disorders in mice. Rsk4 is required for central fibroblast growth factor-19 to reduce body weight in obese mice.