Anti-carcinogenic Effect of Cathepsin K Inhibitor, Odanacatib with a Low Dose of Cisplatin Against Human Breast Carcinoma MCF-7 and MDA-MB231 Cells

Author(s): Yaongamphi Vashum, Amuthavalli Kottaiswamy, Tholcopiyan Loganathan, Fathima B. Sheriff, Shila Samuel*

Journal Name: Current Cancer Therapy Reviews

Volume 17 , Issue 2 , 2021

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Graphical Abstract:


Background: A cross-linking agent commonly used for cancer chemotherapy is a platinum compound such as cisplatin. However, with the acquisition of cellular drug resistance and adverse side effects, the potency of cisplatin is, therefore, often tempered. To overcome these issues, the present study has established the use of cathepsin k (CTSK) inhibitor as a potent chemosensitizer.

Methods: The cytotoxic effect of cisplatin and odanacatib (ODN) on two different breast cancer patient- derived cell lines, MDA-MB-231 and MCF-7, was assessed by MTT-based colorimetric assay. The drug interaction coefficient CDI was used to evaluate the synergistically inhibitory impact of the drug combination and immunoblot was used to examine the expression of certain proteins responsible for cell survival and the mechanism of apoptosis.

Results: In this study, we found that IC50 of ODN in combination with cisplatin (half of IC25) induced a synergistic cytotoxic effect in different breast cancer cells. Diminished expression of Bcl-2 and increased expression of Bax aroused the cytochrome release, that triggered caspase-9 and -3 activation in the combinatorial group. ODN with a lower dose of cisplatin significantly inhibited the protein expression of novel chemoresistant factors such as STAT3, NFκB and IL-6.

Conclusion: This study highlights the potential effects of the combination of ODN with a reduced dose of cisplatin on improving the growth inhibition and apoptosis-inducing effect on breast cancer cells via combined inhibition of NF-κB-induced IL-6 and STAT3 activation. The study result suggests that the further development of this novel inhibitor in combination with a low dose of standard cisplatin-based chemotherapy may contribute to an alternative treatment option for certain cancers.

Keywords: Breast cancer, chemoresistance, cathepsin K, odanacatib, cisplatin, synergism, apoptosis.

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Article Details

Year: 2021
Published on: 21 December, 2020
Page: [159 - 169]
Pages: 11
DOI: 10.2174/1573394716666201222101925
Price: $65

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