Research Article

Identification of a novel cisplatin resistance gene in bladder cancer and potential inhibitors

Volume: 29 Number: 6 November 2, 2025

Identification of a novel cisplatin resistance gene in bladder cancer and potential inhibitors

Abstract

Cisplatin-based regimens are indicated for the treatment of a broad spectrum of solid malignancies. Bladder cancer is among the solid malignancies in which cisplatin is used as the first-line treatment. Despite the high success rate of cisplatin therapy, a subset of patients experience poor prognosis and develop resistance to cisplatin. For this reason, there is still a need to find new drug targets to overcome cisplatin resistance and improve response in patients with bladder cancer. This study aimed to find a potential target to help restore bladder cancer sensitivity to cisplatin. First, two microarray datasets were analyzed to find the gene signatures related to cisplatin resistance. Akinase anchor protein 5 (AKAP5) gene was selected as a possible target in cisplatin resistance. To find a suitable AKAP5 inhibitor, a virtual screening of a FDA-approved library was performed and 5-methyltetrahydrofolate (5-MTHF) was selected for the subsequent investigation. Finally, the effect of AKAP inhibition on the cytotoxicity of cisplatin in 5637 cells was determined using the MTT assay. Molecular docking of the selected inhibitor against AKAP5 was performed to validate the virtual screening results and the docking scores were in line with the virtual screening results. Cotreatment with 5-MTHF significantly increased cytotoxicity in 5637 cells treated with 2.5 μM of cisplatin, compared to the groups not receiving 5-MTHF (P<0.05). Our results showed the effectiveness of AKAP5 inhibition to overcome cisplatin resistance in bladder cancer. This novel approach holds the potential for optimizing therapeutic outcomes in bladder cancer patients.

Keywords

References

  1. [1] Shewach DS, Kuchta RD. Introduction to cancer chemotherapeutics. Chem Rev. 2009;109(7):2859-2861. https://doi.org/10.1021/cr900208x
  2. [2] Kuan F-C, Li J-M, Huang Y-C, Chang S-F, Shi C-S. Therapeutic Potential of Regorafenib in Cisplatin-Resistant Bladder Cancer with High Epithelial–Mesenchymal Transition and Stemness Properties. Int J Mol Sci. 2023;24(24):17610. https://doi.org/10.3390/ijms242417610
  3. [3] Afonso J, Barbosa-Matos C, Silvestre R, Pereira-Vieira J, Gonçalves SM, Mendes-Alves C, Parpot P, Pinto J, Carapito Â, Guedes de Pinho P, Santos L, Longatto-Filho A, Baltazar F. Cisplatin-Resistant Urothelial Bladder Cancer Cells Undergo Metabolic Reprogramming beyond the Warburg Effect. Cancers (Basel). 2024;16(7):1418. https://doi.org/10.3390/cancers16071418
  4. [4] Shi ZD, Hao L, Han XX, Wu ZX, Pang K, Dong Y, Qin JX, Wang GY, Zhang XM, Xia T, Liang Q, Zhao Y, Li R, Zhang SQ, Zhang JH, Chen JG, Wang GC, Chen ZS, Han CH. Targeting HNRNPU to overcome cisplatin resistance in bladder cancer. Mol Cancer. 2022;21(1):37. https://doi.org/10.1186/s12943-022-01517-9.
  5. [5] Siddik ZH. Cisplatin: mode of cytotoxic action and molecular basis of resistance. Oncogene. 2003;22(47):7265-7279. https://doi.org/10.1038/sj.onc.1206933 .
  6. [6] Sheikhshabani SH, Modarres P, Ghafouri-Fard S, Amini-Farsani Z, Khodaee L, Shaygan N, Amini-Farsani Z, Omrani MD. Meta-analysis of microarray data to determine gene indicators involved in cisplatin resistance in non-small cell lung cancer. Cancer Rep (Hoboken). 2024;7(2):e1970. https://doi.org/10.1002/cnr2.1970
  7. [7] Sun M, Liu X, Zhao W, Zhang B, Deng P. Circ_0058063 contributes to cisplatin-resistance of bladder cancer cells by upregulating B2M through acting as RNA sponges for miR-335-5p. BMC Cancer. 2022;22(1):313. . https://doi.org/10.1038/nrd.2018.168
  8. [8] Pushpakom S, Iorio F, Eyers PA, Escott KJ, Hopper S, Wells A, Doig A, Guilliams T, Latimer J, McNamee C, Norris A, Sanseau P, Cavalla D, Pirmohamed M. Drug repurposing: progress, challenges and recommendations. Nat Rev Drug Discov. 2019;18(1):41-58.https://doi.org/10.1038/nrd.2018.168

Details

Primary Language

English

Subjects

Pharmaceutical Toxicology

Journal Section

Research Article

Publication Date

November 2, 2025

Submission Date

December 17, 2024

Acceptance Date

February 15, 2025

Published in Issue

Year 2025 Volume: 29 Number: 6

APA
Zohori Pour, K., Fallah, M., & Hekmatirad, S. (2025). Identification of a novel cisplatin resistance gene in bladder cancer and potential inhibitors. Journal of Research in Pharmacy, 29(6), 2278-2286. https://doi.org/10.12991/jrespharm.1797763
AMA
1.Zohori Pour K, Fallah M, Hekmatirad S. Identification of a novel cisplatin resistance gene in bladder cancer and potential inhibitors. J. Res. Pharm. 2025;29(6):2278-2286. doi:10.12991/jrespharm.1797763
Chicago
Zohori Pour, Kiarash, Marjan Fallah, and Shirin Hekmatirad. 2025. “Identification of a Novel Cisplatin Resistance Gene in Bladder Cancer and Potential Inhibitors”. Journal of Research in Pharmacy 29 (6): 2278-86. https://doi.org/10.12991/jrespharm.1797763.
EndNote
Zohori Pour K, Fallah M, Hekmatirad S (November 1, 2025) Identification of a novel cisplatin resistance gene in bladder cancer and potential inhibitors. Journal of Research in Pharmacy 29 6 2278–2286.
IEEE
[1]K. Zohori Pour, M. Fallah, and S. Hekmatirad, “Identification of a novel cisplatin resistance gene in bladder cancer and potential inhibitors”, J. Res. Pharm., vol. 29, no. 6, pp. 2278–2286, Nov. 2025, doi: 10.12991/jrespharm.1797763.
ISNAD
Zohori Pour, Kiarash - Fallah, Marjan - Hekmatirad, Shirin. “Identification of a Novel Cisplatin Resistance Gene in Bladder Cancer and Potential Inhibitors”. Journal of Research in Pharmacy 29/6 (November 1, 2025): 2278-2286. https://doi.org/10.12991/jrespharm.1797763.
JAMA
1.Zohori Pour K, Fallah M, Hekmatirad S. Identification of a novel cisplatin resistance gene in bladder cancer and potential inhibitors. J. Res. Pharm. 2025;29:2278–2286.
MLA
Zohori Pour, Kiarash, et al. “Identification of a Novel Cisplatin Resistance Gene in Bladder Cancer and Potential Inhibitors”. Journal of Research in Pharmacy, vol. 29, no. 6, Nov. 2025, pp. 2278-86, doi:10.12991/jrespharm.1797763.
Vancouver
1.Kiarash Zohori Pour, Marjan Fallah, Shirin Hekmatirad. Identification of a novel cisplatin resistance gene in bladder cancer and potential inhibitors. J. Res. Pharm. 2025 Nov. 1;29(6):2278-86. doi:10.12991/jrespharm.1797763