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普尼卡拉金化合物通过PAR2/mTOR通路缓解烟雾提取物诱导的支气管上皮细胞衰老

Jianguo Xu¹, Xin Li¹, Xiaoli Zeng¹

¹Department of Gerontal Respiratory Medicine, The First Hospital of Lanzhou University, Lanzhou, 730000, China.

Current medicinal chemistry

|October 4, 2024

概括

普尼卡拉 (PCG) 通过抑制蛋白酶激活受体2 (PAR2) /mTOR通路,有效地治疗烟草烟雾诱导的呼吸道上皮细胞衰老,提供一种自然的治疗方法.

科学领域:

细胞衰老研究研究
衰老的分子生物学
呼吸系统药物呼吸系统药物

背景情况:

烟草烟雾是气道上皮细胞衰老的一个重要因素.
普尼卡拉 (PCG) 是一种已知的天然抗衰老化合物.
PCG对烟雾诱导的气道细胞衰老的影响仍然未被探索.

研究的目的:

研究PCG在治疗由香烟烟雾提取物 (CSE) 诱导的人类支气管上皮细胞系 (BEAS-2B) 衰老中的疗效.
为了确定PCG是否抑制老年气道上皮细胞中的蛋白酶激活受体2 (PAR2) /mTOR通路.

主要方法:

生物信息学分析PAR2功能及其通过mTOR途径与肺衰老的联系.
分子动力学模拟以评估PCG与PAR2的结合亲和力.
细胞活力测定 (CCK8),基因/蛋白质表达分析 (qRT-PCR,西部斑点) 针对衰老标志物 (p16,p21,SIRT1) 和通路活性.
与衰老相关的β-galactosidase (SA-β-gal) 染色和ELISA用于与衰老相关的分泌表型 (SASP) 因素 (IL-6,IL-8,TNF-α).

主要成果:

生物信息学数据通过mTOR途径证实了PAR2在肺衰老中的作用.
分子动力学显示,PCG和PAR2之间存在强,稳定的结合.
CSE诱导了BEAS-2B细胞衰老,并激活了PAR2/mTOR通路.
PCG预处理显著降低了CSE诱导的衰老,并抑制了PAR2/mTOR通路.

结论:

PCG在呼吸道上皮质细胞衰老方面表现出治疗作用.
通过调节PAR2/mTOR通路,PCG可以缓解烟草烟雾引起的肺细胞衰老.

关键词:

香烟烟雾的烟雾是什么意思在PAR2中,PAR2是PAR2的一部分.空气通道的空气通道.细胞衰老细胞衰老在mTOROR中使用mTOR.这就是"Punicalagin"的意思.

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