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Growth inhibition and induction of apoptosis in MCF-7 breast cancer cells by a new series of substituted-1,3,4-oxadiazole derivatives

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Summary

The multiple pharmacological actions of unique synthetic compounds are a prerequisite for classifying a drug as highly efficacious, because the multiple pharmacological actions offer the possibility of treating various diseases like cancer. 1,3,4-Oxadiazoles are an important class of heterocyclic compounds with broad spectrum of biological activities. In this study we focused on the ability of these derivatives to induce apoptosis in cultured MCF-7 breast cancer cells. Treatment of MCF-7 cells with varying concentrations of the different derivatives resulted in dose and time dependent sequence of events marked by apoptosis, as shown by loss of cell viability, chromatin condensation, internucleosomal DNA fragmentation and sub G0 phase accumulation. Furthermore, apoptosis in MCF-7 cell was induced by upregulation of proto-oncoprotein Bax and activation of Caspase-3 activated DNase. Although the derivatives induced apoptosis was associated with Bax protein levels, negligible Bcl-2 reduction was observed. Analysis of the data suggests that the substituted oxadiazole derivatives exert antiproliferative action and growth inhibition on MCF-7 cells through apoptosis induction and that it may have anticancer properties valuable for application in drug products.

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Acknowledgements

The author (AK) thanks University Grant Commission (UGC), New Delhi, and the author (SSD) thanks Lady Tata Memorial Trust, Mumbai, India, for the financial support. The authors express their sincere gratitude to University of Mysore, Mysore, India for the laboratory facility.

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Authors and Affiliations

  1. Department of Studies in Biotechnology, University of Mysore, Manasagangotri, Mysore, 570006, Karnataka, India

    Akhilesh Kumar, Saritha S. D’Souza & Bharathi P. Salimath

  2. Department of Studies in Chemistry, University of Mysore, Manasagangotri, Mysore, 570006, Karnataka, India

    S. L. Gaonkar & K. M. L. Rai

  3. DOS in Applied Botany and Biotechnology, University of Mysore, Mysore, 570006, India

    Bharathi P. Salimath

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  1. Akhilesh Kumar
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  2. Saritha S. D’Souza
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  3. S. L. Gaonkar
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  4. K. M. L. Rai
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  5. Bharathi P. Salimath
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Correspondence to Bharathi P. Salimath.

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Kumar, A., D’Souza, S.S., Gaonkar, S.L. et al. Growth inhibition and induction of apoptosis in MCF-7 breast cancer cells by a new series of substituted-1,3,4-oxadiazole derivatives. Invest New Drugs 26, 425–435 (2008). https://doi.org/10.1007/s10637-008-9116-5

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