Exploring the Anticancer Efficacy of Mixture of Local Probiotics on MDA-MB-231 and MCF-7 Breast Cell Lines

Document Type : Research Articles

Authors

• Mohadese Abdoli ^{1, 2}
• Parisa Fathi Rezaei ¹
• Kamran Mansouri ²

¹ Biology Department, Faculty of Science, University of Maragheh, Maragheh, Iran

² Medical Biology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran

https://doi.org/10.22067/jcmr.2021.68651.1001

Abstract

This study aimed to investigate the cytotoxicity of a probiotic mixture on human breast cancer cell lines. To prepare the mixture, local probiotic bacteria were cultured, and the lyophilized supernatant was applied for downstream experiments. The antioxidant activity, total phenol content (TPC), and fatty acid composition of the bacterial supernatant (BS) were also measured. The possible cytotoxic/anti-proliferative effect of the probiotic mixture was accessed on both breast cancer cell lines at different concentrations using MTT assay. Furthermore, the apoptosis-inducing effects of the same mixture was studied by DAPI staining. The highest level of antioxidant activity and total phenol content (TPC) were detected for the BS at 3200 µg/ml. According to the GC–MS analysis, linoleic acid (37.40 %) and oleic acid (26.93 %) were identified as the major fatty acids of the BS. The MTT assay showed that the BS has anti-proliferative effects on MDA-MB-231 and MCF-7 cells in a time- and dose-dependent manner (IC₅₀: 3200 μg/ml). The apoptosis-inducing effects of the mixture was confirmed in both cell lines through morphological analyses of the cells’ nucleoli, and the formation of apoptotic bodies. According to these experiments, cytotoxic effects and apoptosis-inducing potential were confirmed for the BS against two human breast cancer cell lines, including MDA-MB-231, and MCF-7. Hence, it could be considered as a suitable anti-cancer agent.

Keywords

• Breast cancer
• Probiotics
• Cytotoxicity
• Apoptosis
• Antioxidant activity

20.1001.1.20089147.2021.13.1.7.0

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