Esculetin Induces Apoptosis in Human Leukemia Kasumi-1 cells through Caspase 3 Activation

Authors

  • Sharad Sawney Dr. B. R. Ambedkar Center for Biomedical Research, University of Delhi, Delhi-110007 India, 2University School of Biotechnology, Guru Gobind Singh Indraprastha University, Sector-16-C, Dwarka, New Delhi-110078 India
  • Prateek Arora Dr. B. R. Ambedkar Center for Biomedical Research, University of Delhi, Delhi-110007 India
  • Chris Steffi Dr. B. R. Ambedkar Center for Biomedical Research, University of Delhi, Delhi-110007 India
  • Vemika Chandra Dr. B. R. Ambedkar Center for Biomedical Research, University of Delhi, Delhi-110007 India
  • Mashook Ali Dr. B. R. Ambedkar Center for Biomedical Research, University of Delhi, Delhi-110007 India
  • Kamal K Aggarwal University School of Biotechnology, Guru Gobind Singh Indraprastha University, Sector-16-C, Dwarka, New Delhi-110078 India
  • Daman Saluja Dr. B. R. Ambedkar Center for Biomedical Research, University of Delhi, Delhi-110007 India

Abstract

Objective: AML alone accounts for 20% cases of acute leukemia in children and  80% cases in adults. Among many genetic alterations, the most frequently reported translocation is between chromosomes 8 and 21, t(8; 21) or AML1-ETO. In the past decade, the anti–proliferative effect of various natural compounds including esculetin (a coumarin), has been reported in several leukemic cell lines.  We have recently shown that esculetin reduces the half-life of AML1-ETO chimeric mRNA as well as mutated c-Kit transcripts in human monocytic leukemia kasumi-1 cell line harbouring the t(8;21) translocation.  In the present study we established the antiproliferating activity of esculetin on kasumi-1 cell line. Methods: In this study, cytotoxicity of the esculetin on kausmi-1 cells was investigated. The ability of esculetin to induce cell cycle arrest, alter mitochondrial potential, activate Caspase cascade and to express apoptotic markers was investigated through western blotting analysis and flow cytometry methods.Results and conclusion: The half maximal inhibitory concentration of esculetin in kasumi-1 cells was found to be 100 μM. Ecsuletin arrested the cell cycle at G0/G1 phase in kasumi-1 cells. A significant increase in mitochondrial membrane potential and cytosolic release of cytochrome C was observed in ecsuletin treated kasumi-1 cells.  This was accompanied with activation of Caspase 3 and Caspase 8 and enhanced cleavage of phospholipase C (PLC)γ-1. Annexin V apoptotic assay further corrobrated our results that esculetin mediated cytoxicity which is accompanied by cleavage of Caspase 3 is due to apoptosis in kausmi-1 cells.

Keywords:

Esculetin, AML1-ETO, Kasumi-1, Apoptosis, Caspase 3, Caspase 8

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Published

06-07-2015
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How to Cite

Sawney, S., P. Arora, C. Steffi, V. Chandra, M. Ali, K. K. Aggarwal, and D. Saluja. “Esculetin Induces Apoptosis in Human Leukemia Kasumi-1 Cells through Caspase 3 Activation”. Journal of Innovations in Pharmaceutical and Biological Sciences, vol. 2, no. 3, July 2015, pp. 273-89, https://jipbs.com/index.php/journal/article/view/69.

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Research Article