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Evaluation of Paclitaxel and Cisplatin Combinations in TNBC: A Strategy to Enhance Efficacy and Minimize Exposure
Abstract
Triple-negative breast cancer (TNBC) is an aggressive subtype of breast cancer with limited therapeutic options due to the lack of hormone and HER2 receptors. Conventional chemotherapies such as cisplatin and paclitaxel remain important treatment options, but their efficacy is often limited by toxicity and resistance.
This study aimed to evaluate the individual and combined cytotoxic effects of cisplatin and paclitaxel on TNBC cell lines, with a focus on identifying synergistic interactions that could enhance efficacy while reducing exposure time. Two TNBC cell lines (MDA-MB-231 and 4T1) and one non-cancerous human cell line (HEK293) were treated with increasing concentrations of cisplatin (1–25 µM) and paclitaxel (0.005–0.5 µM) for 24, 48, and 72h. Cell viability was assessed using the MTT assay, and IC₅₀ values were calculated. Drug combinations were evaluated at 24 and 48 hours using the Chou–Talalay method and CompuSyn software to determine the combination index (CI).
Both cisplatin and paclitaxel showed dose- and time-dependent cytotoxicity. Combination treatments demonstrated synergistic effects (CI < 1) in both TNBC cell lines. Importantly, comparable or enhanced cytotoxicity was achieved at 48 hours compared to 72-hour single-drug treatments. The combination of cisplatin and paclitaxel induces rapid and synergistic cytotoxic effects in TNBC cell lines, potentially allowing for shorter treatment durations that could minimize side effects. These findings support further investigation of this combination as a promising strategy in TNBC therapy.
Keywords
- triple-negative breast cancer
- cisplatin
- paclitaxel
- drug combination
- cytotoxicity
- synergy
- MDA-MB-231
- 4T1
Supporting Institution
Manisa Celal Bayar University
References
- 1. Sung, H., et al., Global Cancer Statistics 2020: GLOBOCAN estimates of incidence and mortality worldwide for 36 cancers in 185 countries. CA Cancer Journal for Clinicians, 2021. 71(3): p. 209-249. 2. Bianchini, G., J.M. Balko, I.A. Mayer, M.E. Sanders, and L. Gianni, Triple-negative breast cancer: challenges and opportunities of a heterogeneous disease. Nature Reviews Clinical Oncology, 2016. 13(11): p. 674-690. 3. Waks, A.G. and E.P. Winer, Breast cancer treatment: A review. JAMA, 2019. 321(3): p. 288-300. 4. Lehmann, B.D., et al., Identification of human triple-negative breast cancer subtypes and preclinical models for selection of targeted therapies. Journal of Clinical Investigation, 2011. 121(7): p. 2750-2767. 5. Nedeljković, M. and A. Damjanović, Mechanisms of chemotherapy resistance in triple-negative breast cancer-how we can rise to the challenge. Cells, 2019. 8(9): p. 957.
Details
Primary Language
English
Subjects
Biochemistry and Cell Biology (Other)
Journal Section
Research Article
Publication Date
April 16, 2026
Submission Date
October 6, 2025
Acceptance Date
February 20, 2026
Published in Issue
Year 2026 Volume: 9 Number: 1
APA
Çamlı Pulat, Ç., & Atmaca, H. (2026). Evaluation of Paclitaxel and Cisplatin Combinations in TNBC: A Strategy to Enhance Efficacy and Minimize Exposure. International Journal of Life Sciences and Biotechnology, 9(1), 19-26. https://doi.org/10.38001/ijlsb.1797944
AMA
1.Çamlı Pulat Ç, Atmaca H. Evaluation of Paclitaxel and Cisplatin Combinations in TNBC: A Strategy to Enhance Efficacy and Minimize Exposure. Int. J. Life Sci. Biotechnol. 2026;9(1):19-26. doi:10.38001/ijlsb.1797944
Chicago
Çamlı Pulat, Çisil, and Harika Atmaca. 2026. “Evaluation of Paclitaxel and Cisplatin Combinations in TNBC: A Strategy to Enhance Efficacy and Minimize Exposure”. International Journal of Life Sciences and Biotechnology 9 (1): 19-26. https://doi.org/10.38001/ijlsb.1797944.
EndNote
Çamlı Pulat Ç, Atmaca H (April 1, 2026) Evaluation of Paclitaxel and Cisplatin Combinations in TNBC: A Strategy to Enhance Efficacy and Minimize Exposure. International Journal of Life Sciences and Biotechnology 9 1 19–26.
IEEE
[1]Ç. Çamlı Pulat and H. Atmaca, “Evaluation of Paclitaxel and Cisplatin Combinations in TNBC: A Strategy to Enhance Efficacy and Minimize Exposure”, Int. J. Life Sci. Biotechnol., vol. 9, no. 1, pp. 19–26, Apr. 2026, doi: 10.38001/ijlsb.1797944.
ISNAD
Çamlı Pulat, Çisil - Atmaca, Harika. “Evaluation of Paclitaxel and Cisplatin Combinations in TNBC: A Strategy to Enhance Efficacy and Minimize Exposure”. International Journal of Life Sciences and Biotechnology 9/1 (April 1, 2026): 19-26. https://doi.org/10.38001/ijlsb.1797944.
JAMA
1.Çamlı Pulat Ç, Atmaca H. Evaluation of Paclitaxel and Cisplatin Combinations in TNBC: A Strategy to Enhance Efficacy and Minimize Exposure. Int. J. Life Sci. Biotechnol. 2026;9:19–26.
MLA
Çamlı Pulat, Çisil, and Harika Atmaca. “Evaluation of Paclitaxel and Cisplatin Combinations in TNBC: A Strategy to Enhance Efficacy and Minimize Exposure”. International Journal of Life Sciences and Biotechnology, vol. 9, no. 1, Apr. 2026, pp. 19-26, doi:10.38001/ijlsb.1797944.
Vancouver
1.Çisil Çamlı Pulat, Harika Atmaca. Evaluation of Paclitaxel and Cisplatin Combinations in TNBC: A Strategy to Enhance Efficacy and Minimize Exposure. Int. J. Life Sci. Biotechnol. 2026 Apr. 1;9(1):19-26. doi:10.38001/ijlsb.1797944