Front Pharmacol:2号肺痹方通过GSK-3β/mTOR途径诱导自噬改善肺纤维化

2022-08-14 紫菀款冬 MedSci原创

探索2号肺痹方(N2FBR)治疗特发性肺纤维化的作用机制。

目的:2号肺痹方(N2FBR)是治疗特发性肺纤维化的中药方剂。前期研究表明,N2FBR通过增加自噬抑制H2O2介导的肺泡上皮细胞氧化应激损伤,然而体内是否存在类似的机制尚不清楚。

方法:将小鼠随机分为四组:假手术组(sham)、模型组(model)、2号FBR组(N2FBR)和SB216763组(SB,GSK-3β抑制剂)。用异氟醚溶液麻醉小鼠,然后通过气道注入博莱霉素溶液(2 u/kg),假手术组接受相同体积的盐水溶液。N2FBR组在造模后第二天每天灌胃一次2号肺痹方(21.02g/kg)。每3天测量一次体重,21天后处死小鼠。

HE染色和Masson三色染色观察组织学变化和胶原沉积。免疫组织化学染色和WB检测相关蛋白表达。试剂盒检测氧化应激生物标志物(MDA、SOD、GSH-Px、T-AOC)和纤维化生物标志物(HYP、Col III、α-SMA)。透射电子显微镜(TEM)观察自噬相关结构。

结果:N2FBR治疗可有效缓解间质纤维化和胶原沉积,主要通过上调SOD、GSH-Px、T-AOC和下调MDA含量。N2FBR还增加了LC3B、Beclin-1、LAMP1、TFEB的表达,并下调了p62、legumain的表达。根据TEM观察结果,N2FBR处理促进了自噬体的产生。此外N2FBR还通过GSK-3β/mTOR信号通路发挥其抗氧化应激和促自噬作用

结论:这些结果为N2FBR在肺纤维化中的保护作用提供了进一步的证据。该研究可能对抗纤维病疗法的发展产生影响。

 

文献来源:

Liu H, Pang Q, Cao F, et al. Number 2 Feibi Recipe Ameliorates Pulmonary Fibrosis by Inducing Autophagy Through the GSK-3β/mTOR Pathway. Front Pharmacol. 2022;13:921209. Published 2022 Jul 12. doi:10.3389/fphar.2022.921209

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    2022-09-29 jj000001

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