- Title
- Platinum-resistance in epithelial ovarian cancer: an interplay of epithelial–mesenchymal transition interlinked with reprogrammed metabolism
- Creator
- Leung, Dilys; Price, Zoe; Lokman, Noor; Wang, Wanqi; Goonetilleke, Lizamarie; Kadife, Elif; Oehler, Martin; Ricciardelli, Carmela; Kannourakis, George; Ahmed, Nuzhat
- Date
- 2022
- Type
- Text; Journal article
- Identifier
- http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/192281
- Identifier
- vital:17967
- Identifier
-
https://doi.org/10.1186/s12967-022-03776-y
- Identifier
- ISSN:1479-5876 (ISSN)
- Abstract
- Background: Epithelial ovarian cancer is the most lethal gynaecological cancer worldwide. Chemotherapy resistance represents a significant clinical challenge and is the main reason for poor ovarian cancer prognosis. We identified novel expression of markers related to epithelial mesenchymal transitions (EMT) in a carboplatin resistant ovarian cancer cell line by proteomics. This was validated in the platinum resistant versus sensitive parental cell lines, as well as platinum resistant versus sensitive human ovarian cancer patient samples. The prognostic significance of the different proteomics-identified marker proteins in prognosis prediction on survival as well as their correlative association and influence on immune cell infiltration was determined by public domain data bases. Methods: We explored the proteomic differences between carboplatin-sensitive OVCAR5 cells (parental) and their carboplatin-resistant counterpart, OVCAR5 CBPR cells. qPCR and western blots were performed to validate differentially expressed proteins at the mRNA and protein levels, respectively. Association of the identified proteins with epithelial–mesenchymal transition (EMT) prompted the investigation of cell motility. Cellular bioenergetics and proliferation were studied to delineate any biological adaptations that facilitate cancer progression. Expression of differentially expressed proteins was assessed in ovarian tumors obtained from platinum-sensitive (n = 15) versus platinum-resistant patients (n = 10), as well as matching tumors from patients at initial diagnosis and following relapse (n = 4). Kaplan–Meier plotter and Tumor Immune Estimation Resource (TIMER) databases were used to determine the prognostic significance and influence of the different proteomics-identified proteins on immune cell infiltration in the tumor microenvironment (TME). Results: Our proteomics study identified 2422 proteins in both cell lines. Of these, 18 proteins were upregulated and 14 were downregulated by
- Publisher
- BioMed Central Ltd
- Relation
- Journal of Translational Medicine Vol. 20, no. 1 (2022), p.
- Rights
- All metadata describing materials held in, or linked to, the repository is freely available under a CC0 licence
- Rights
- https://creativecommons.org/licenses/by/4.0/
- Rights
- Copyright © The Author(s) 2022
- Rights
- Open Access
- Subject
- 32 Biomedical And Clinical Sciences; 42 Health Sciences; AKR1B1; Epithelial ovarian cancer; Epithelial–mesenchymal transition; ITGAV; Platinum-resistance; TGFB1
- Full Text
- Reviewed
- Funder
- This work was supported by John Turner Cancer Research Funds to Fiona Elsey Cancer Research Institute. DL was supported by John Turner Cancer Research Funds. This research has been funded by the Ovarian Cancer Research Foundation (OCRF), Australia (MO). CR was supported by the Lin Huddleston Ovarian Cancer Fellowship funded by the Cancer Council South Australia and the Adelaide Medical School, University of Adelaide.
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