The present invention relates to a composition for preventing and treating muscle diseases or improving muscular function, containing, as an active ingredient, at least one selected from the group consisting of morusin, kuwanon G, and a Mori Cortex Radicis extract. The Mori Cortex Radicis extract, morusin, or kuwanon G, according to the present invention, has an effect of remarkably enhancing muscular function by increasing the expression of p-mTOR protein involved in muscular protein synthesis, inhibiting the expression of mRNAs of MuRF-1 and atrogin-1 involved in muscular protein degradation, and increasing the expression of mRNAs of MyoD and myogenin involved in muscular differentiation. In addition, the present invention is a natural product so as to be used safely without side effects, thereby being usable in drugs, food, or cosmetics.
本发明涉及一种用于预防和治疗肌肉疾病或改善肌肉功能的组合物,该组合物作为一种活性成分,含有至少一种选自莫鲁欣、库瓦农 G 和桑白皮
提取物组成的组的活性成分。根据本发明,Mori Cortex Radicis
提取物、morusin 或 kuwanon G 通过增加参与肌肉蛋白质合成的 p-mTOR 蛋白的表达,抑制参与肌肉蛋白质降解的 MuRF-1 和 atrogin-1 的 mRNA 的表达,以及增加参与肌肉分化的 MyoD 和 myogenin 的 mRNA 的表达,具有显著增强肌肉功能的效果。此外,本发明是一种天然产品,可安全使用,无副作用,因此可用于药物、食品或化妆品。