PMID- 37418084 OWN - NLM STAT- MEDLINE DCOM- 20230829 LR - 20230831 IS - 1573-4978 (Electronic) IS - 0301-4851 (Linking) VI - 50 IP - 9 DP - 2023 Sep TI - GGA (geranylgeranylacetone) ameliorates bleomycin-induced lung inflammation and pulmonary fibrosis by inhibiting apoptosis and oxidative stress. PG - 7215-7224 LID - 10.1007/s11033-023-08590-3 [doi] AB - BACKGROUND: Fibrosis is a response to ongoing cellular injury, disruption, and tissue remodeling, the pathogenesis of which is unknown, and is characterized by extracellular matrix deposition. The antifibrotic effect of Geranylgeranylacetone (GGA), as an inducer of Heat shock protein 70 (HSP70), in liver, kidney and pulmonary fibrosis has been supported by multiple preclinical evidence. However, despite advances in our understanding, the precise roles of HSP70 in fibrosis require further investigation. The purpose of this study was to investigate whether GGA could participate in the progression of pulmonary fibrosis in mice through apoptosis, oxidative stress and inflammation. METHODS AND RESULTS: B-cell lymphoma-2(Bcl-2) and Bcl2-Associated X (Bax) are two proteins related to apoptosis. Anti-apoptotic factor Bcl-2 and pro-apoptotic factor Bax are often involved in the apoptotic process in the form of dimer. Immunofluorescence and Western blot results showed that bleomycin (BLM) and transforming growth factor-beta (TGF-beta) inhibited Bcl-2 expression and promoted Bax expression in vitro and in vivo, respectively. In contrast, GGA treatment reverses this change. Reactive oxygen species (ROS), Malondialdehyde (MDA) and superoxide dismutase (SOD) are markers of oxidative stress, which often reflect oxidative injury of cells. The detection of ROS, MDA and SOD expression showed that TGF-beta and BLM treatment could significantly promote oxidative stress, while GGA treatment could alleviate oxidative stress damage. In addition, BLM significantly elevated Tumor necrosis factor-alpha(TNF-alpha), Interleukin1beta (IL-1beta) and Interleukin 6 (IL-6), while scutellarin reversed the above alterations except for that of GGA. RESULTS: Taken together, GGA suppressed apoptotic, oxidative stress and inflammation in BLM-induced pulmonary fibrosis. CI - (c) 2023. The Author(s), under exclusive licence to Springer Nature B.V. FAU - Zhou, Rong AU - Zhou R AD - Department of Occupational and Environmental Health Science, College of Public Health, Zhengzhou University, Zhengzhou, Henan province, 450001, China. FAU - Jin, Chaomei AU - Jin C AD - Department of Occupational and Environmental Health Science, College of Public Health, Zhengzhou University, Zhengzhou, Henan province, 450001, China. FAU - Jiao, Linlin AU - Jiao L AD - Department of Occupational and Environmental Health Science, College of Public Health, Zhengzhou University, Zhengzhou, Henan province, 450001, China. FAU - Zhang, Siyu AU - Zhang S AD - Department of Occupational and Environmental Health Science, College of Public Health, Zhengzhou University, Zhengzhou, Henan province, 450001, China. FAU - Tian, Mei AU - Tian M AD - Department of Occupational and Environmental Health Science, College of Public Health, Zhengzhou University, Zhengzhou, Henan province, 450001, China. FAU - Liu, Jiamin AU - Liu J AD - Department of Occupational and Environmental Health Science, College of Public Health, Zhengzhou University, Zhengzhou, Henan province, 450001, China. FAU - Yang, Songtai AU - Yang S AD - Department of Occupational and Environmental Health Science, College of Public Health, Zhengzhou University, Zhengzhou, Henan province, 450001, China. FAU - Yao, Wu AU - Yao W AD - Department of Occupational and Environmental Health Science, College of Public Health, Zhengzhou University, Zhengzhou, Henan province, 450001, China. yaowu@zzu.edu.cn. FAU - Zhou, Fang AU - Zhou F AUID- ORCID: 0000-0002-8211-9181 AD - Department of Occupational and Environmental Health Science, College of Public Health, Zhengzhou University, Zhengzhou, Henan province, 450001, China. zhoufang@zzu.edu.cn. LA - eng GR - 222300420537/the Natural Science Foundation of Henan Province/ PT - Journal Article DEP - 20230707 PL - Netherlands TA - Mol Biol Rep JT - Molecular biology reports JID - 0403234 RN - S8S8451A4O (geranylgeranylacetone) RN - 0 (Reactive Oxygen Species) RN - 11056-06-7 (Bleomycin) RN - 0 (bcl-2-Associated X Protein) RN - 0 (Transforming Growth Factor beta) RN - 0 (Tumor Necrosis Factor-alpha) RN - EC 1.15.1.1 (Superoxide Dismutase) SB - IM MH - Mice MH - Animals MH - *Pulmonary Fibrosis/chemically induced/drug therapy/metabolism MH - Reactive Oxygen Species/metabolism MH - Bleomycin/pharmacology MH - bcl-2-Associated X Protein/metabolism MH - Oxidative Stress MH - Inflammation/chemically induced/drug therapy/metabolism MH - Fibrosis MH - *Pneumonia MH - Transforming Growth Factor beta/metabolism MH - Tumor Necrosis Factor-alpha/metabolism MH - Apoptosis MH - Superoxide Dismutase/metabolism MH - Lung/metabolism OTO - NOTNLM OT - Apoptosis OT - BEAS-2B cell OT - Epithelial-mesenchymal transition (EMT) OT - Inflammation OT - Oxidative stress OT - Pulmonary fibrosis EDAT- 2023/07/07 13:04 MHDA- 2023/08/29 12:42 CRDT- 2023/07/07 11:12 PHST- 2023/03/14 00:00 [received] PHST- 2023/06/13 00:00 [accepted] PHST- 2023/08/29 12:42 [medline] PHST- 2023/07/07 13:04 [pubmed] PHST- 2023/07/07 11:12 [entrez] AID - 10.1007/s11033-023-08590-3 [pii] AID - 10.1007/s11033-023-08590-3 [doi] PST - ppublish SO - Mol Biol Rep. 2023 Sep;50(9):7215-7224. doi: 10.1007/s11033-023-08590-3. Epub 2023 Jul 7.