Abstract
Caspases are important initiators and most well-known finishers of apoptosis. By changing the death propagation homeostatic equilibrium, their different expression patterns might trigger the progression of hazardous diseases like cancer. miR-221 is an oncogenic miRNA. It is known to have both anti-angiogenic and angiogenic effect. The aim of this work was to compare the expression levels of miR-221 and its target caspase-3 in different cancer cell lines and to find out a relationship between these two. We also tried to establish a prominent relationship between miR-221 and its role in apoptosis by studying their expression levels. Our results indicate that expression of caspase-3 is quite lower as compared to miR-221 expression in all of the selected cancer cell lines. As a result, we conclude that miR-221 may have a crucial role in repressing the expression of caspase-3 which may contribute to a lower apoptotic rate, thus supporting the selection of more aggressive cancer cells. To our knowledge, this is the first study related to the expression levels of caspase-3 and miR-221 in different cell lines at the same time. We expect that our study might pave the way for better understanding the role of miR-221 in apoptotic regulation of caspase-3.
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Kaifee Arman is recipient of Graduate Scholarship from TUBITAK under the program 2215- Graduate Scholarship Program for International Students.
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Ergun, S., Arman, K., Temiz, E. et al. Expression patterns of miR-221 and its target Caspase-3 in different cancer cell lines. Mol Biol Rep 41, 5877–5881 (2014). https://doi.org/10.1007/s11033-014-3461-6
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DOI: https://doi.org/10.1007/s11033-014-3461-6