PMID- 36383801 OWN - NLM STAT- MEDLINE DCOM- 20221118 LR - 20221202 IS - 1414-431X (Electronic) IS - 0100-879X (Print) IS - 0100-879X (Linking) VI - 55 DP - 2022 TI - Nanosized copper particles induced mesangial cell toxicity via the autophagy pathway. PG - e12252 LID - S0100-879X2022000100674 [pii] LID - 10.1590/1414-431X2022e12252 [doi] LID - e12252 AB - Nanosized copper particles (nano Cu) have been incorporated into products in multiple industries, although studies have demonstrated that these particles are nephrotoxic. We investigated the cytotoxicity of nanosized copper particles on rat mesangial cells and measured rates of apoptosis, the expression of caspase-3, and generation of reactive oxygen species. We also measured autophagy through the acridine orange (AO) staining and expression of Beclin-1, microtubule-associated protein 1 light chain 3, and p62 to screen the underlying mechanism of toxicity. Nanosized copper particles inhibited mesangial cell viability, up-regulated the activity of caspase-3, and increased the rates of apoptosis and the generation of reactive oxygen species in a concentration-dependent manner. Exposure to nano Cu increased the formation of acidic vesicular organelles and the expression of Beclin-1, microtubule-associated protein 1 light chain 3, and p62, and treatment with an autophagy inhibitor reduced nephrotoxicity. This indicated that the autophagy pathway is involved in the toxicity induced by nanosized copper particles to mesangial cells. This finding can contribute to the development of safety guidelines for the evaluation of nanomaterials in the future. FAU - Xu, Pengjuan AU - Xu P AUID- ORCID: 0000-0002-4320-3006 AD - School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China. FAU - Cao, Min AU - Cao M AUID- ORCID: 0000-0003-3010-1980 AD - School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China. FAU - Dong, Xueqian AU - Dong X AUID- ORCID: 0000-0002-0957-8584 AD - School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China. FAU - Yu, Zhichao AU - Yu Z AUID- ORCID: 0000-0001-9676-1063 AD - Scientific Research Office, Tianjin Sino-German University of Applied Sciences, Tianjin, China. FAU - Liu, Jianwei AU - Liu J AUID- ORCID: 0000-0001-7120-2951 AD - School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China. FAU - Tan, Junzhen AU - Tan J AUID- ORCID: 0000-0003-2953-6004 AD - School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China. FAU - Wang, Yiyi AU - Wang Y AUID- ORCID: 0000-0003-2346-3887 AD - Department of Neurology, Tianjin Haihe Hospital, Tianjin, China. FAU - Li, Tao AU - Li T AUID- ORCID: 0000-0001-8820-6350 AD - School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China. FAU - Zhao, Shuwu AU - Zhao S AUID- ORCID: 0000-0001-5754-0532 AD - School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China. LA - eng PT - Journal Article DEP - 20221111 PL - Brazil TA - Braz J Med Biol Res JT - Brazilian journal of medical and biological research = Revista brasileira de pesquisas medicas e biologicas JID - 8112917 RN - EC 3.4.22.- (Caspase 3) RN - 789U1901C5 (Copper) RN - 0 (Reactive Oxygen Species) RN - 0 (Beclin-1) RN - 0 (Microtubule-Associated Proteins) SB - IM MH - Rats MH - Animals MH - Caspase 3 MH - *Copper/toxicity/metabolism MH - *Mesangial Cells/metabolism MH - Reactive Oxygen Species/metabolism MH - Beclin-1/metabolism MH - Autophagy MH - Apoptosis MH - Microtubule-Associated Proteins/metabolism MH - Cell Line, Tumor PMC - PMC9668079 EDAT- 2022/11/17 06:00 MHDA- 2022/11/19 06:00 PMCR- 2022/11/11 CRDT- 2022/11/16 15:53 PHST- 2022/08/09 00:00 [received] PHST- 2022/10/06 00:00 [accepted] PHST- 2022/11/16 15:53 [entrez] PHST- 2022/11/17 06:00 [pubmed] PHST- 2022/11/19 06:00 [medline] PHST- 2022/11/11 00:00 [pmc-release] AID - S0100-879X2022000100674 [pii] AID - 10.1590/1414-431X2022e12252 [doi] PST - epublish SO - Braz J Med Biol Res. 2022 Nov 11;55:e12252. doi: 10.1590/1414-431X2022e12252. eCollection 2022.