[Role of reactive oxygen species/silent information regulator 1 in hyperoxia-induced bronchial epithelial cell injury].

Q3 Medicine 中国当代儿科杂志 Pub Date : 2024-08-15 DOI:10.7499/j.issn.1008-8830.2404120

Kun Yang, Yue Wu, Rong Zhang, Xiao-Ping Lei, Lan Kang, Wen-Bin Dong

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Abstract

Objectives: To investigate the effect of reactive oxygen species (ROS)/silent information regulator 1 (SIRT1) on hyperoxia-induced mitochondrial injury in BEAS-2B cells.

Methods: The experiment was divided into three parts. In the first part, cells were divided into H0, H6, H12, H24, and H48 groups. In the second part, cells were divided into control group, H48 group, H48 hyperoxia+SIRT1 inhibitor group (H48+EX 527 group), and H48 hyperoxia+SIRT1 agonist group (H48+SRT1720 group). In the third part, cells were divided into control group, 48-hour hyperoxia+N-acetylcysteine group (H48+NAC group), and H48 group. The ROS kit was used to measure the level of ROS. Western blot and immunofluorescent staining were used to measure the expression levels of SIRT1 and mitochondria-related proteins. Transmission electron microscopy was used to observe the morphology of mitochondria.

Results: Compared with the H0 group, the H6, H12, H24, and H48 groups had a significantly increased fluorescence intensity of ROS (P<0.05), the H48 group had significant reductions in the expression levels of SIRT1 protein and mitochondria-related proteins (P<0.05), and the H24 and H48 groups had a significant reduction in the fluorescence intensity of mitochondria-related proteins (P<0.05). Compared with the H48 group, the H48+SRT1720 group had significant increases in the expression levels of mitochondria-related proteins and the mitochondrial aspect ratio (P<0.05), and the H48+EX 527 group had a significant reduction in the mitochondrial area (P<0.05). Compared with the H48 group, the H48+NAC group had a significantly decreased fluorescence intensity of ROS (P<0.05) and significantly increased levels of SIRT1 protein, mitochondria-related proteins, mitochondrial area, and mitochondrial aspect ratio (P<0.05).

Conclusions: The ROS/SIRT1 axis is involved in hyperoxia-induced mitochondrial injury in BEAS-2B cells.

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[活性氧/沉默信息调节器 1 在高氧诱导的支气管上皮细胞损伤中的作用]。

目的研究活性氧（ROS）/沉默信息调节因子 1（SIRT1）对高氧诱导的 BEAS-2B 细胞线粒体损伤的影响：实验分为三个部分。第一部分，将细胞分为 H0、H6、H12、H24 和 H48 组。第二部分：将细胞分为对照组、H48 组、H48 超氧+SIRT1 抑制剂组（H48+EX 527 组）和 H48 超氧+SIRT1 激动剂组（H48+SRT1720 组）。第三部分将细胞分为对照组、48 小时高氧+N-乙酰半胱氨酸组（H48+NAC 组）和 H48 组。采用 ROS 试剂盒检测 ROS 水平。Western 印迹和免疫荧光染色用于测量 SIRT1 和线粒体相关蛋白的表达水平。透射电子显微镜观察线粒体的形态：结果：与 H0 组相比，H6、H12、H24 和 H48 组的 ROS 荧光强度显著增加（PPPPPPP结论：ROS/SIRT1 轴是线粒体的重要组成成分：ROS/SIRT1轴参与了高氧诱导的BEAS-2B细胞线粒体损伤。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

中国当代儿科杂志 Medicine-Pediatrics, Perinatology and Child Health

CiteScore

1.50

自引率

0.00%

发文量

5006

期刊介绍： The Chinese Journal of Contemporary Pediatrics (CJCP) is a peer-reviewed open access periodical in the field of pediatrics that is sponsored by the Central South University/Xiangya Hospital of Central South University and under the auspices of the Ministry of Education of China. It is cited as a source in the scientific and technological papers of Chinese journals, the Chinese Science Citation Database (CSCD), and is one of the core Chinese periodicals in the Peking University Library. CJCP has been indexed by MEDLINE/PubMed/PMC of the American National Library, American Chemical Abstracts (CA), Holland Medical Abstracts (EM), Western Pacific Region Index Medicus (WPRIM), Scopus and EBSCO. It is a monthly periodical published on the 15th of every month, and is distributed both at home and overseas. The Chinese series publication number is CN 43-1301/R；ISSN 1008-8830. The tenet of CJCP is to “reflect the latest advances and be open to the world”. The periodical reports the most recent advances in the contemporary pediatric field. The majority of the readership is pediatric doctors and researchers.