互乐素-17A通过p53和uPA系统的交叉声调节肺损伤和重塑
Durgesh Nandini Das1, Akarsha Balnadupete1, Rashmi Shetty1
1Texas Lung Injury Institute, Department of Cellular and Molecular Biology, The University of Texas Health Science Center at Tyler, 11937 US Highway 271, Tyler, TX 75708, USA.
干白素-17A (IL-17A) 通过促进细胞死亡和肌纤维细胞分化来驱动肺损伤和纤维化. 抑制IL-17A信号减少肺损伤和纤维修复,为肺纤维化提供潜在的治疗点.
科学领域:
- 肺部医学 肺部医学
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
背景情况:
- 气囊炎,IL-17A和纤维素沉积是肺损伤和纤维修复的标志.
- 二型膜上皮细胞 (AEC) 活力与肺损伤和肺纤维化 (PF) 有关,受p53和纤维解质的影响.
- 在肺损伤和重塑中连接IL-17A,p53和PAI-1的精确机制尚未完全理解.
研究的目的:
- 阐明IL-17A信号在肺损伤和随后的纤维性重塑中的机械作用.
- 为了研究IL-17A如何影响AEC的亡,炎症和肺纤维细胞的益菌性反应.
- 在实验性肺损伤模型中评估针对IL-17A途径的治疗潜力.
主要方法:
- 在各种肺损伤模型中诱导IL-17A及其受体 (IL-17RA).
- 在IL-17A刺激后,肺纤维细胞 (LFs) 中评估AEC亡,炎症和益菌原体标志物.
- 使用卡韦林-1支架域 (CSP) 和CSP7.7进行IL-17A的药理抑制.
- 在白素诱导的肺损伤小鼠模型中对抗IL-17A和抗IL-17RA抗体的评估.
主要成果:
- IL-17A/IL-17RA信号增强了AEC细胞亡,气囊损伤和肺纤维化.
- IL-17A促进了肺纤维细胞中的益菌原体标记表达,表明肌纤维细胞的分化.
- 通过CSP7,抗IL-17A或抗IL-17RA抗体抑制IL-17A信号传递,在小鼠中减轻了肺损伤和纤维化.
结论:
- IL-17A/IL-17RA信号传递在调解肺损伤和纤维化损伤后重塑方面发挥着至关重要的作用.
- 向IL-17A信号显示出治疗疗效,可以减少肺炎和纤维化.
- 这些发现突出了IL-17A作为肺纤维化的一个关键媒介和潜在的治疗点.
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