PMID- 38004099 OWN - NLM STAT- MEDLINE DCOM- 20231127 LR - 20231127 IS - 2072-6643 (Electronic) IS - 2072-6643 (Linking) VI - 15 IP - 22 DP - 2023 Nov 7 TI - The Role of Cyanidin-3-O-glucoside in Modulating Oxaliplatin Resistance by Reversing Mesenchymal Phenotype in Colorectal Cancer. LID - 10.3390/nu15224705 [doi] LID - 4705 AB - BACKGROUND: Epithelial-mesenchymal transition (EMT) plays an important role in the biological and biochemical processes of cells, and it is a critical process in the malignant transformation, and mobility of cancer. Additionally, EMT is one of the main mechanisms contributing to chemoresistance. Resistance to oxaliplatin (OXA) poses a momentous challenge in the chemotherapy of advanced colorectal cancer (CRC) patients, highlighting the need to reverse drug resistance and improve patient survival. In this study, we explored the response of cyanidin-3-O-glucoside (C3G), the most abundant anthocyanin in plants, on the mechanisms of drug resistance in cancer, with the purpose of overcoming acquired OXA resistance in CRC cell lines. METHODS: We generated an acquired OXA-resistant cell line, named HCT-116-ROx, by gradually exposing parental HCT-116 cells to increasing concentrations of OXA. To characterize the resistance, we performed cytotoxicity assays and shape factor analyses. The apoptotic rate of both resistant and parental cells was determined using Hoechst 33342/Propidium Iodide (PI) fluorescence staining. Migration capacity was evaluated using a wound-healing assay. The mesenchymal phenotype was assessed through qRT-PCR and immunofluorescence staining, employing E-cadherin, N-cadherin, and Vimentin markers. RESULTS: Resistance characterization announced decreased OXA sensitivity in resistant cells compared to parental cells. Moreover, the resistant cells exhibited a spindle cell morphology, indicative of the mesenchymal phenotype. Combined treatment of C3G and OXA resulted in an augmented apoptotic rate in the resistant cells. The migration capacity of resistant cells was higher than parental cells, while treatment with C3G decreased the migration rate of HCT-116-ROx cells. Analysis of EMT markers showed that HCT-116-ROx cells exhibited loss of the epithelial phenotype (E-cadherin) and gain of the mesenchymal phenotype (N-cadherin and Vimentin) compared to HCT-116 cells. However, treatment of resistant cells with C3G reversed the mesenchymal phenotype. CONCLUSION: The morphological observations of cells acquiring oxaliplatin resistance indicated the loss of the epithelial phenotype and the acquisition of the mesenchymal phenotype. These findings suggest that EMT may contribute to acquired OXA resistance in CRC. Furthermore, C3G decreased the mobility of resistant cells, and reversed the EMT process, indicating its potential to overcome acquired OXA resistance. FAU - Kurter, Hasan AU - Kurter H AD - Department of Translational Oncology, Institute of Health Sciences, Dokuz Eylul University, Izmir 35330, Turkey. FAU - Basbinar, Yasemin AU - Basbinar Y AD - Department of Translational Oncology, Institute of Oncology, Dokuz Eylul University, Izmir 35330, Turkey. FAU - Ellidokuz, Hulya AU - Ellidokuz H AD - Department of Preventive Oncology, Institute of Oncology, Dokuz Eylul University, Izmir 35330, Turkey. FAU - Calibasi-Kocal, Gizem AU - Calibasi-Kocal G AD - Department of Translational Oncology, Institute of Oncology, Dokuz Eylul University, Izmir 35330, Turkey. LA - eng GR - 2020.KB.SAG.039/Dokuz Eylul University Scientific Research Coordination Unit/ PT - Journal Article DEP - 20231107 PL - Switzerland TA - Nutrients JT - Nutrients JID - 101521595 RN - 04ZR38536J (Oxaliplatin) RN - 7732ZHU564 (cyanidin) RN - 0 (Anthocyanins) RN - 0 (Vimentin) RN - 0 (Cadherins) RN - 0 (Glucosides) SB - IM MH - Humans MH - Oxaliplatin/pharmacology/therapeutic use MH - Anthocyanins/pharmacology/therapeutic use MH - Vimentin/metabolism MH - Cell Line, Tumor MH - *Colorectal Neoplasms/drug therapy/genetics/pathology MH - Cadherins/metabolism MH - Phenotype MH - *Biochemical Phenomena MH - Glucosides/pharmacology/therapeutic use MH - Epithelial-Mesenchymal Transition MH - Drug Resistance, Neoplasm MH - Cell Movement PMC - PMC10674439 OTO - NOTNLM OT - colorectal cancer OT - cyanidin-3-O-glucoside OT - epithelial-mesenchymal transition OT - oxaliplatin resistance COIS- The authors declare no conflict of interest. EDAT- 2023/11/25 12:44 MHDA- 2023/11/27 16:18 PMCR- 2023/11/07 CRDT- 2023/11/25 01:20 PHST- 2023/09/25 00:00 [received] PHST- 2023/10/11 00:00 [revised] PHST- 2023/10/16 00:00 [accepted] PHST- 2023/11/27 16:18 [medline] PHST- 2023/11/25 12:44 [pubmed] PHST- 2023/11/25 01:20 [entrez] PHST- 2023/11/07 00:00 [pmc-release] AID - nu15224705 [pii] AID - nutrients-15-04705 [pii] AID - 10.3390/nu15224705 [doi] PST - epublish SO - Nutrients. 2023 Nov 7;15(22):4705. doi: 10.3390/nu15224705.