PMID- 36933581 OWN - NLM STAT- MEDLINE DCOM- 20230411 LR - 20230411 IS - 1879-3177 (Electronic) IS - 0887-2333 (Linking) VI - 89 DP - 2023 Jun TI - Oxidative stress-mediated mitochondrial apoptosis induced by the acaricide, fenpyroximate, on cultured human colon cancer HCT 116 cells. PG - 105587 LID - S0887-2333(23)00036-X [pii] LID - 10.1016/j.tiv.2023.105587 [doi] AB - Fenpyroximate (FEN) is an acaricide that inhibits mitochondrial electron transport at the NADH-coenzyme Q oxidoreductase (complex I). The present study was designed to investigate the molecular mechanisms underling FEN toxicity on cultured human colon carcinoma cells (HCT116). Our data showed that FEN induced HCT116 cell mortality in a concentration dependent manner. FEN arrested cell cycle in G0/G1 phase and increased DNA damage as assessed by comet assay. Induction of apoptosis was confirmed in HCT116 cells exposed to FEN by AO-EB staining and Annexin V-FITC/PI double staining assay. Moreover, FEN induced a loss in mitochondrial membrane potential (MMP), increased p53 and Bax mRNA expression and decreased bcl2 mRNA level. An increase in caspase 9 and caspase 3 activities was also detected. All toghether, these data suggest that FEN induce apoptosis in HCT116 cells via mitochondrial pathway. To check the implication of oxidative stress in FEN-induced cell toxicity, we examined the oxidative stress statue in HCT116 cells exposed to FEN and we tested the effect of a powerful antioxidant, N-acetylcystein (NAC), on FEN-caused toxicity. It was observed that FEN enhanced ROS generation and MDA levels and disturbed SOD and CAT activities. Besides, cell treatment with NAC significantly protected cells from mortality, DNA damage, loss of MMP, and caspase 3 activity induced by FEN. To the best of our knowledge, this is the first study showing that FEN induced mitochondrial apoptosis via ROS generation and oxidative stress. CI - Copyright (c) 2023 Elsevier Ltd. All rights reserved. FAU - Ayed-Boussema, Imen AU - Ayed-Boussema I AD - Laboratory of Research on Biologically Compatible Compounds, LR01SE17 University of Monastir, Faculty of Dental Medicine, 5019 Monastir, Tunisia; Faculty of Sciences of Gafsa, University of Gafsa, Tunisia. Electronic address: imen.ayed333@gmail.com. FAU - Rjiba-Touati, Karima AU - Rjiba-Touati K AD - Laboratory of Research on Biologically Compatible Compounds, LR01SE17 University of Monastir, Faculty of Dental Medicine, 5019 Monastir, Tunisia; Faculty of Sciences of Gafsa, University of Gafsa, Tunisia. FAU - Hamdi, Hiba AU - Hamdi H AD - Laboratory of Research on Biologically Compatible Compounds, LR01SE17 University of Monastir, Faculty of Dental Medicine, 5019 Monastir, Tunisia. FAU - Chaabani, Hanen AU - Chaabani H AD - Laboratory of Research on Biologically Compatible Compounds, LR01SE17 University of Monastir, Faculty of Dental Medicine, 5019 Monastir, Tunisia. FAU - Abid-Essefi, Salwa AU - Abid-Essefi S AD - Laboratory of Research on Biologically Compatible Compounds, LR01SE17 University of Monastir, Faculty of Dental Medicine, 5019 Monastir, Tunisia. LA - eng PT - Journal Article DEP - 20230317 PL - England TA - Toxicol In Vitro JT - Toxicology in vitro : an international journal published in association with BIBRA JID - 8712158 RN - 0 (Acaricides) RN - 9W557V4RYA (fenpyroximate) RN - 0 (Reactive Oxygen Species) RN - EC 3.4.22.- (Caspase 3) RN - 0 (RNA, Messenger) SB - IM MH - Humans MH - HCT116 Cells MH - *Acaricides/pharmacology MH - Reactive Oxygen Species/metabolism MH - Caspase 3/metabolism MH - Oxidative Stress MH - *Colonic Neoplasms MH - Apoptosis MH - RNA, Messenger/metabolism MH - Membrane Potential, Mitochondrial OTO - NOTNLM OT - Apoptosis OT - Cell cycle arrest OT - DNA damage OT - Fenpyroximate OT - Mitochondrial pathway OT - Oxidative stress COIS- Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2023/03/19 06:00 MHDA- 2023/04/11 06:41 CRDT- 2023/03/18 20:27 PHST- 2023/01/16 00:00 [received] PHST- 2023/03/02 00:00 [revised] PHST- 2023/03/15 00:00 [accepted] PHST- 2023/04/11 06:41 [medline] PHST- 2023/03/19 06:00 [pubmed] PHST- 2023/03/18 20:27 [entrez] AID - S0887-2333(23)00036-X [pii] AID - 10.1016/j.tiv.2023.105587 [doi] PST - ppublish SO - Toxicol In Vitro. 2023 Jun;89:105587. doi: 10.1016/j.tiv.2023.105587. Epub 2023 Mar 17.