EVALUATION OF PRO-APOPTOTIC EFFECTS OF β-MONOLINOLEIN ON METASTATIC BREAST CANCER CELL LINE MDA-MB-231

  • MOHAMMED SHAFI SOFI Department of Microbiology and Biotechnology, Molecular Diagnostics and Nanobiotechnology Laboratories, Bangalore University, J.B. Campus, Bengaluru, Karnataka, India.

Abstract

Objectives: The objective of this study was to evaluate the β-monolinolein as a potential therapy for breast cancer treatment.


Methods: The cytotoxic activity of β-monolinolein was evaluated by 3-(4,5-dimetylthiazol-2-yl)-2,5-diphenyltetrazolium bromide and trypan blue exclusion assay. The cellular cytotoxicity and levels of cytosolic enzyme, lactate dehydrogenase (LDH), were measured by assessing μmoles of nicotinamide adenine dinucleotide/well/min. To confirm whether β-monolinolein induces apoptosis in 3,4-methylenedioxyamphetamine (MDA)- MB-231 cells, western blot and semiquantitative reverse transcription-polymerase chain reaction (RT-PCR) analysis were performed.


Results: For the 1st time, it was demonstrated that β-monolinolein strongly inhibits the growth of MDA-MB-231 cells, with an half maximal inhibitory concentration value of 12.5 μg/ml. <90% of cell death was achieved at higher concentrations after 48 h of treatment. Trypan blue assay showed that the cell viability was significantly decreased in a dose-dependent manner in MDA-MB-231 cells after 48 h of treatment. On the other hand, LDH activities in the cultured media were significantly elevated in a dose-dependent manner as compared to the control. Further, the western blot analysis showed that β-monolinolein leads to change in expression levels of important cell cycle regulators such as p21, Bax, Bcl-Xl, and Bcl-2 in MDA-MB-231 cells. The semiquantitative RT-PCR results indicated a significant upregulation of proapoptotic genes such as p53, p21, and Bax and downregulation of antiapoptotic gene Bcl-2.


Conclusion: These results indicate that β-monolinolein leads to change in expression of various cell cycle/apoptotic regulators and hence induces death in MDA-MB-231 cells.

Keywords: β-monolinolein, Cytotoxicity, Breast cancer treatment.

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How to Cite
SOFI, M. S. “EVALUATION OF PRO-APOPTOTIC EFFECTS OF β-MONOLINOLEIN ON METASTATIC BREAST CANCER CELL LINE MDA-MB-231”. Asian Journal of Pharmaceutical and Clinical Research, Vol. 12, no. 3, Feb. 2019, pp. 235-40, https://innovareacademics.in/journals/index.php/ajpcr/article/view/30130.
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