Inflammatory stimulation plays a significant role in the development and worsening of insulin-resistant diabetes.Therefore,it is crucial to identify therapeutic agents that can alleviate insulin resistance by targetin...Inflammatory stimulation plays a significant role in the development and worsening of insulin-resistant diabetes.Therefore,it is crucial to identify therapeutic agents that can alleviate insulin resistance by targeting inflammation.Here,we present evidence that Bakuchiol(BL),a monoterpene phenolic compound first discovered from Psoralea corylifolia L.as traditional Chinese medicine,can effectively improve insulin resistance in diabetic mice through anti-inflammation.Our findings demonstrate that BL alleviates inflammation by inhibiting the toll-like receptor 4/nuclear factorκB/mitogen-activated protein kinase axis,consequently enhancing insulin receptor signaling through the c-Jun N-terminal kinase/suppressors of cytokine signaling 3/insulin receptor substrate1 pathway and improving glucolipid homeostasis.Furthermore,the insulin recovery achieved with BL(60 mg/kg)was comparable to that of metformin(200 mg/kg).These results provide further support for considering BL as a potential treatment option for insulin-resistant diabetes mellitus.展开更多
目的采用高内涵技术筛选补骨脂潜在肝毒性成分及其可能的作用机制。方法采用CCK-8法测定补骨脂中异补骨脂二氢黄酮、补骨脂二氢黄酮甲醚、补骨脂二氢黄酮、异补骨脂查尔酮、4’-O-甲基补骨脂查尔酮、补骨脂宁、补骨脂素、异补骨脂素、...目的采用高内涵技术筛选补骨脂潜在肝毒性成分及其可能的作用机制。方法采用CCK-8法测定补骨脂中异补骨脂二氢黄酮、补骨脂二氢黄酮甲醚、补骨脂二氢黄酮、异补骨脂查尔酮、4’-O-甲基补骨脂查尔酮、补骨脂宁、补骨脂素、异补骨脂素、补骨脂定、补骨脂酚10种成分的IC_(50)值。在相同浓度药物处理HepG 2细胞24 h后,进行高内涵检测,通过阳性细胞的平均荧光强度评价各组细胞活性氧、还原型谷胱甘肽、线粒体膜电位及线粒体超氧化物水平4个指标的变化情况,初步筛选补骨脂中主要肝毒性成分。结果CCK-8细胞活力实验结果显示,异补骨脂二氢黄酮、补骨脂二氢黄酮甲醚、补骨脂二氢黄酮、异补骨脂查尔酮、4’-O-甲基补骨脂查尔酮、补骨脂宁、异补骨脂素、补骨脂定、补骨脂酚对Hep G 2细胞的IC_(50)值分别为52.69、42.72、83.63、42.29、57.43、110.80、1420.00、23.58和25.34μmol·L^(-1)。高内涵结果显示,在20μmol·L^(-1)浓度下,补骨脂二氢黄酮甲醚、补骨脂二氢黄酮、异补骨脂查尔酮、补骨脂定和补骨脂酚可显著提高细胞内活性氧水平;异补骨脂查尔酮、4’-O-甲基补骨脂查尔酮、补骨脂宁、异补骨脂素、补骨脂定和补骨脂酚均可导致细胞中还原型谷胱甘肽水平保护性升高;异补骨脂查尔酮、补骨脂定和补骨脂酚均显著降低线粒体膜电位,造成线粒体超氧化物累积。结论异补骨脂查尔酮、补骨脂定和补骨脂酚是补骨脂中造成线粒体功能损伤的主要成分,具有潜在的肝脏毒性,其具体作用机制有待进一步研究。展开更多
基金supported by National Key R&D Program of China(2022YFF1100300)the Central Guidance on Local Science and Technology Development Found of Shenzhen,China(2021Szvup030).
文摘Inflammatory stimulation plays a significant role in the development and worsening of insulin-resistant diabetes.Therefore,it is crucial to identify therapeutic agents that can alleviate insulin resistance by targeting inflammation.Here,we present evidence that Bakuchiol(BL),a monoterpene phenolic compound first discovered from Psoralea corylifolia L.as traditional Chinese medicine,can effectively improve insulin resistance in diabetic mice through anti-inflammation.Our findings demonstrate that BL alleviates inflammation by inhibiting the toll-like receptor 4/nuclear factorκB/mitogen-activated protein kinase axis,consequently enhancing insulin receptor signaling through the c-Jun N-terminal kinase/suppressors of cytokine signaling 3/insulin receptor substrate1 pathway and improving glucolipid homeostasis.Furthermore,the insulin recovery achieved with BL(60 mg/kg)was comparable to that of metformin(200 mg/kg).These results provide further support for considering BL as a potential treatment option for insulin-resistant diabetes mellitus.
文摘目的采用高内涵技术筛选补骨脂潜在肝毒性成分及其可能的作用机制。方法采用CCK-8法测定补骨脂中异补骨脂二氢黄酮、补骨脂二氢黄酮甲醚、补骨脂二氢黄酮、异补骨脂查尔酮、4’-O-甲基补骨脂查尔酮、补骨脂宁、补骨脂素、异补骨脂素、补骨脂定、补骨脂酚10种成分的IC_(50)值。在相同浓度药物处理HepG 2细胞24 h后,进行高内涵检测,通过阳性细胞的平均荧光强度评价各组细胞活性氧、还原型谷胱甘肽、线粒体膜电位及线粒体超氧化物水平4个指标的变化情况,初步筛选补骨脂中主要肝毒性成分。结果CCK-8细胞活力实验结果显示,异补骨脂二氢黄酮、补骨脂二氢黄酮甲醚、补骨脂二氢黄酮、异补骨脂查尔酮、4’-O-甲基补骨脂查尔酮、补骨脂宁、异补骨脂素、补骨脂定、补骨脂酚对Hep G 2细胞的IC_(50)值分别为52.69、42.72、83.63、42.29、57.43、110.80、1420.00、23.58和25.34μmol·L^(-1)。高内涵结果显示,在20μmol·L^(-1)浓度下,补骨脂二氢黄酮甲醚、补骨脂二氢黄酮、异补骨脂查尔酮、补骨脂定和补骨脂酚可显著提高细胞内活性氧水平;异补骨脂查尔酮、4’-O-甲基补骨脂查尔酮、补骨脂宁、异补骨脂素、补骨脂定和补骨脂酚均可导致细胞中还原型谷胱甘肽水平保护性升高;异补骨脂查尔酮、补骨脂定和补骨脂酚均显著降低线粒体膜电位,造成线粒体超氧化物累积。结论异补骨脂查尔酮、补骨脂定和补骨脂酚是补骨脂中造成线粒体功能损伤的主要成分,具有潜在的肝脏毒性,其具体作用机制有待进一步研究。
