PMID- 37855350 OWN - NLM STAT- Publisher LR - 20231019 IS - 2212-3873 (Electronic) IS - 1871-5303 (Linking) DP - 2023 Oct 19 TI - GDF15 Interference Regulates Proliferation, Inflammation, and Autophagy of Lipopolysaccharide-induced Mesangial Cells by Inhibiting PI3K/ AKT/mTOR Signaling. LID - 10.2174/0118715303252127230926002355 [doi] AB - BACKGROUND: Chronic glomerulonephritis (CGN) is a primary glomerular disease. As a circulating protein, growth and differentiation factor 15 (GDF15) participates in a variety of biological processes. OBJECTIVE: We aimed to investigate the role of GDF15 in CGN. METHODS: HBZY-1 cells were induced by lipopolysaccharide (LPS). Cell viability was detected using a cell counting kit-8 (CCK-8) assay, and a western blot was applied for the detection of GDF15 protein expression. After GDF15 silencing, cell proliferation was evaluated by CCK-8 assay and 5-ethynyl-2'-deoxyuridine (EDU) staining. Enzyme-linked immunosorbent assay (ELISA) kits were used to detect the levels of inflammatory cytokines. Autophagy was assessed by GFP-LC3B assay. Besides, the expression of NF-kappaB signaling-, autophagy- (LC3II/I, Beclin l and p62) and phosphoinositide 3-kinase (PI3K)/protein kinase B (AKT)/mechanistic target of rapamycin (mTOR) signaling-related proteins were measured by western blot. Afterwards, PI3K agonist 740Y-P was used to clarify whether GDF15 affected LPS-induced HBZY-1 cells via PI3K/AKT/mTOR signaling. RESULTS: LPS induction increased cell viability and elevated GDF15 expression in HBZY-1 cells. After GDF15 expression depletion, the increased proliferation of LPS-induced HBZY-1 cells was decreased. Additionally, GDF15 knockdown suppressed the release of inflammatory factors in LPS-induced HBZY-1 cells and activated autophagy. Moreover, the PI3K/AKT/ mTOR signal was evidenced to be activated by GDF15 deficiency. The further addition of 740Y-P reversed the impacts of GDF15 deficiency on the proliferation, inflammation, and autophagy of LPS-induced HBZY-1 Conclusion: Collectively, GDF15 downregulation could protect against CGN via blocking PI3K/AKT/mTOR signaling. CI - Copyright(c) Bentham Science Publishers; For any queries, please email at epub@benthamscience.net. FAU - Chen, Zhen AU - Chen Z AD - Department of Nephrology, Shen Zhen Qianhai Shekou Free Trade Zone Hospital, Shenzhen, 518067, China. FAU - Gao, Liping AU - Gao L AD - Department of Nephrology, Shen Zhen Qianhai Shekou Free Trade Zone Hospital, Shenzhen, 518067, China. FAU - Li, Cailing AU - Li C AD - Department of Nephrology, Shen Zhen Qianhai Shekou Free Trade Zone Hospital, Shenzhen, 518067, China. FAU - Sun, Wenzhu AU - Sun W AD - Department of Nephrology, Shen Zhen Qianhai Shekou Free Trade Zone Hospital, Shenzhen, 518067, China. LA - eng PT - Journal Article DEP - 20231019 PL - United Arab Emirates TA - Endocr Metab Immune Disord Drug Targets JT - Endocrine, metabolic & immune disorders drug targets JID - 101269157 SB - IM OTO - NOTNLM OT - Chronic glomerulonephritis OT - GDF15 OT - PI3K/AKT/mTOR signaling OT - autophagy OT - proliferation EDAT- 2023/10/19 12:46 MHDA- 2023/10/19 12:46 CRDT- 2023/10/19 07:44 PHST- 2023/03/07 00:00 [received] PHST- 2023/08/02 00:00 [revised] PHST- 2023/08/31 00:00 [accepted] PHST- 2023/10/19 12:46 [medline] PHST- 2023/10/19 12:46 [pubmed] PHST- 2023/10/19 07:44 [entrez] AID - EMIDDT-EPUB-135359 [pii] AID - 10.2174/0118715303252127230926002355 [doi] PST - aheadofprint SO - Endocr Metab Immune Disord Drug Targets. 2023 Oct 19. doi: 10.2174/0118715303252127230926002355.