PMID- 35676792 OWN - NLM STAT- MEDLINE DCOM- 20220610 LR - 20220610 IS - 1950-6007 (Electronic) IS - 0753-3322 (Linking) VI - 151 DP - 2022 Jul TI - Cytotoxic effect of metformin on butyrate-resistant PMF-K014 colorectal cancer spheroid cells. PG - 113214 LID - S0753-3322(22)00603-5 [pii] LID - 10.1016/j.biopha.2022.113214 [doi] AB - Three-dimensional (3D) cell culture models are used in cancer research because they mimic physiological responses in vivo compared with two-dimensional (2D) culture systems. Recently, cross-resistance of butyrate-resistant (BR) cells and chemoresistance in colorectal cancer (CRC) cells have been reported; however, effective treatments for BR cells have not been identified. In this study, we investigated the cytotoxicity of metformin (MET), an anti-diabetic drug, on BR CRC cells in a 3D spheroid culture model. The results demonstrate that MET decreases spheroid size, migration, and spheroid viability, while it increases spheroid death. The molecular mechanism revealed that AMP-activated protein kinase (AMPK) and Akt serine/threonine kinase 1(Akt) were significantly upregulated, whereas the acetyl-CoA-carboxylase (ACC) and mammalian target of rapamycin (mTOR) were downregulated, which led to caspase activation and apoptosis. Our findings show the potential cytotoxicity of MET on CRC-BR cells. The combination of MET and conventional chemotherapeutic drugs should be addressed in further studies to reduce the side effects of standard chemotherapy for CRC. CI - Copyright (c) 2022 The Authors. Published by Elsevier Masson SAS.. All rights reserved. FAU - Nittayaboon, Kesara AU - Nittayaboon K AD - Department of Biomedical Sciences and Biomedical Engineering, Faculty of Medicine, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand. Electronic address: kesara.nittayaboon@gmail.com. FAU - Leetanaporn, Kittinun AU - Leetanaporn K AD - Department of Biomedical Sciences and Biomedical Engineering, Faculty of Medicine, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand. Electronic address: lkittinun1@gmail.com. FAU - Sangkhathat, Surasak AU - Sangkhathat S AD - Department of Biomedical Sciences and Biomedical Engineering, Faculty of Medicine, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand. Electronic address: s.sangkhathat@gmail.com. FAU - Roytrakul, Sittirak AU - Roytrakul S AD - National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency, Pathumthani 12120, Thailand. Electronic address: sittiruk@biotec.or.th. FAU - Navakanitworakul, Raphatphorn AU - Navakanitworakul R AD - Department of Biomedical Sciences and Biomedical Engineering, Faculty of Medicine, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand. Electronic address: nraphatp@medicine.psu.ac.th. LA - eng PT - Journal Article DEP - 20220528 PL - France TA - Biomed Pharmacother JT - Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie JID - 8213295 RN - 0 (Antineoplastic Agents) RN - 0 (Butyrates) RN - 9100L32L2N (Metformin) RN - EC 2.7.11.1 (Proto-Oncogene Proteins c-akt) RN - EC 2.7.11.31 (AMP-Activated Protein Kinases) SB - IM MH - AMP-Activated Protein Kinases/metabolism MH - *Antineoplastic Agents/pharmacology/therapeutic use MH - Butyrates/pharmacology/therapeutic use MH - Cell Line, Tumor MH - *Colorectal Neoplasms/drug therapy MH - Humans MH - *Metformin/pharmacology/therapeutic use MH - Proto-Oncogene Proteins c-akt/metabolism OTO - NOTNLM OT - Butyrate resistance OT - Colorectal cancer cell OT - Metformin OT - Spheroid cell EDAT- 2022/06/10 06:00 MHDA- 2022/06/11 06:00 CRDT- 2022/06/09 01:07 PHST- 2022/02/27 00:00 [received] PHST- 2022/05/24 00:00 [revised] PHST- 2022/05/26 00:00 [accepted] PHST- 2022/06/09 01:07 [entrez] PHST- 2022/06/10 06:00 [pubmed] PHST- 2022/06/11 06:00 [medline] AID - S0753-3322(22)00603-5 [pii] AID - 10.1016/j.biopha.2022.113214 [doi] PST - ppublish SO - Biomed Pharmacother. 2022 Jul;151:113214. doi: 10.1016/j.biopha.2022.113214. Epub 2022 May 28.