细胞衰老通过调节p53信号通路的上升,有助于机械通风引起的隔膜功能障碍
Weimin Shen1, Ye Jiang1, Ying Xu1
1Department of Respiratory Care, Regional Medical Center for National Institute of Respiratory Diseases, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Qingchun East Rd. 3, Hangzhou, 310016, China.
BMC pulmonary medicine
|December 15, 2023
概括
机械通风导致隔膜缩和功能障碍. 这项研究发现,p53依赖的细胞衰老在这种通风诱导的隔膜功能障碍 (VIDD) 中起着作用,这表明了新的治疗点.
科学领域:
- 生理学 生理学 生理学
- 细胞生物学 细胞生物学
- 病理学 病理学 病理学
背景情况:
- 机械通风可以导致隔膜缩和损伤,影响临床结果.
- 通风引起的隔膜功能障碍 (VIDD) 背后的确切机制尚不清楚.
- 这项研究调查了细胞衰老在VIDD中的潜在参与.
研究的目的:
- 探索细胞衰老在通风引起的隔膜功能障碍 (VIDD) 的发展中的作用.
- 阐明机械通风引起的隔膜损伤背后的机制.
主要方法:
- 新西兰子被分为控制 (自发呼吸) 和机械通风 (48h,V-ACV模式) 组.
- 对隔膜组织进行了分析,以检测瘤破坏,蛋白质和mRNA表达 (MAFbx,MuRF1,p53,p21) 和衰老标志物 (SA-βGal,Pai1,MMP9).
- 使用RNA测序来识别与衰老相关的丰富基因.
主要成果:
- 与对照组相比,机械通风的子显示出明显更高的瘤破坏和隔膜缩.
- 在通风组中,缩标志物 (MAFbx,MuRF1) 和衰老标志物 (p53,p21,SA-βGal,Pai1,MMP9) 的表达显著上调.
- RNA-seq分析显示,机械通风组中老化相关基因的显著丰富.
结论:
- 48小时的机械通风会在子模型中引发显著的隔膜超结构损伤和缩.
- 基于p53的细胞衰老与机械通风引起的隔膜功能障碍的发病有关.
- 这些发现表明,在治疗VIDD方面,可能有新的治疗点.
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