Tiotropium/Olodaterol treatment reduces cigarette smoke extract-induced cell death in BEAS-2B bronchial epithelial cells

BMC Pharmacology and Toxicology

Yi-Rong Li¹  Woei-Horng Chai²  Cheng-hsiung Chen²  Hsiu-Hui Chang²  Po-Chiang Chan²  Sheng-Hao Lin³  Ching-Hsiung Lin⁴ 

[1] Changhua Christian Hospital, Thoracic Medicine Research center, 50006, Changhua, Taiwan, Republic of China;Division of Chest Medicine, Department of Internal Medicine, Changhua Christian Hospital, 135 Nanhsiao Street, 50006, Changhua, Taiwan, Republic of China;Division of Chest Medicine, Department of Internal Medicine, Changhua Christian Hospital, 135 Nanhsiao Street, 50006, Changhua, Taiwan, Republic of China;Changhua Christian Hospital, Thoracic Medicine Research center, 50006, Changhua, Taiwan, Republic of China;Department of Recreation and Holistic Wellness, MingDao University, Changhua, Taiwan, Republic of China;Division of Chest Medicine, Department of Internal Medicine, Changhua Christian Hospital, 135 Nanhsiao Street, 50006, Changhua, Taiwan, Republic of China;Department of Recreation and Holistic Wellness, MingDao University, Changhua, Taiwan, Republic of China;Institute of Genomics and Bioinformatics, National Chung Hsing University, Taichung, Taiwan, Republic of China;

关键词: CSE-induced cell death;    Human bronchial epithelial cell;    Tiotropium/olodaterol;    Autophagy;    JNK;   

DOI  :  10.1186/s40360-020-00451-0

来源: Springer

【 摘 要 】

BackgroundCigarette smoking is a critical risk factor for the destruction of lung parenchyma or the development of emphysema, which is characteristic of COPD. Disruption of epithelial layer integrity may contribute to lung injury following cigarette smoke extract (CSE) exposure. Tiotropium/olodaterol acts as a bronchodilator for COPD treatment; however, the effect of dual bronchodilators on epithelial cell injury and its underlying mechanism remain unclear. In this study, we evaluated the effect of tiotropium/olodaterol on CSE-mediated cell death and the underlying mechanisms.MethodsCell viability was determined using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. Apoptosis, necrosis, and autophagy were evaluated using flow cytometry. Autophagy-related protein, phosphorylated ERK, expression was determined using Western blotting.ResultsTiotropium/olodaterol significantly inhibited CSE-induced cell death, mitochondria dysfunction, and autophagy, which had no significant effect on apoptosis or necrosis in BEAS-2B human bronchial epithelial cells. Moreover, tiotropium/olodaterol attenuated CSE-induced upregulation of JNK.ConclusionsCSE induced cell death and caused consistent patterns of autophagy and JNK activation in BEAS-2B human bronchial epithelial cells. Tiotropium/olodaterol treatment protected bronchial epithelial cells from CSE-induced injury and inhibited activation of autophagy and upregulation of JNK phosphorylation. These results indicate that tiotropium/olodaterol may protect epithelial cells from the deleterious effects of CSE exposure, which is associated with the regulation of autophagy and JNK activation.

【 授权许可】

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