Corosolic acid induces apoptotic cell death in HCT116 human colon cancer cells through a caspase-dependent pathway

  • Authors:
    • Bokyung Sung
    • Yong Jung Kang
    • Dong Hwan Kim
    • Seong Yeon Hwang
    • Yujin Lee
    • Minjeong Kim
    • Jeong-Hyun Yoon
    • Cheol Min Kim
    • Hae Young Chung
    • Nam Deuk Kim
  • View Affiliations

  • Published online on: January 29, 2014     https://doi.org/10.3892/ijmm.2014.1639
  • Pages: 943-949
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Abstract

Corosolic acid (CA), a pentacyclic triterpene isolated from Lagerstroemia speciosa L. (also known as Banaba), has been shown to exhibit anticancer properties in various cancer cell lines. However, the anticancer activity of CA on human colorectal cancer cells and the underlying mechanisms remain to be elucidated. In this study, we investigated the effects of CA on cell viability and apoptosis in HCT116 human colon cancer cells. CA dose-dependently inhibited the viability of HCT116 cells. The typical hallmarks of apoptosis, such as chromatin condensation, a sub-G1 peak and phosphatidylserine externalization were detected by Hoechst 33342 staining, flow cytometry and Annexin V staining following treatment with CA. Western blot analysis revealed that CA induced a decrease in the levels of procaspase-8, -9 and -3 and the cleavage of poly(ADP-ribose) polymerase (PARP). The apoptotic cell death induced by CA was accompanied by the activation of caspase-8, -9 and -3, which was completely abrogated by the pan-caspase inhibitor, z-VAD‑FMK. Furthermore, CA upregulated the levels of pro-apoptotic proteins, such as Bax, Fas and FasL and downregulated the levels of anti-apoptotic proteins, such as Bcl-2 and survivin. Taken together, our data provide insight into the molecular mechanisms of CA-induced apoptosis in colorectal cancer (CRC), rendering this compound a potential anticancer agent for the treatment of CRC.
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2014-April
Volume 33 Issue 4

Print ISSN: 1107-3756
Online ISSN:1791-244X

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Spandidos Publications style
Sung B, Kang YJ, Kim DH, Hwang SY, Lee Y, Kim M, Yoon J, Kim CM, Chung HY, Kim ND, Kim ND, et al: Corosolic acid induces apoptotic cell death in HCT116 human colon cancer cells through a caspase-dependent pathway. Int J Mol Med 33: 943-949, 2014.
APA
Sung, B., Kang, Y.J., Kim, D.H., Hwang, S.Y., Lee, Y., Kim, M. ... Kim, N.D. (2014). Corosolic acid induces apoptotic cell death in HCT116 human colon cancer cells through a caspase-dependent pathway. International Journal of Molecular Medicine, 33, 943-949. https://doi.org/10.3892/ijmm.2014.1639
MLA
Sung, B., Kang, Y. J., Kim, D. H., Hwang, S. Y., Lee, Y., Kim, M., Yoon, J., Kim, C. M., Chung, H. Y., Kim, N. D."Corosolic acid induces apoptotic cell death in HCT116 human colon cancer cells through a caspase-dependent pathway". International Journal of Molecular Medicine 33.4 (2014): 943-949.
Chicago
Sung, B., Kang, Y. J., Kim, D. H., Hwang, S. Y., Lee, Y., Kim, M., Yoon, J., Kim, C. M., Chung, H. Y., Kim, N. D."Corosolic acid induces apoptotic cell death in HCT116 human colon cancer cells through a caspase-dependent pathway". International Journal of Molecular Medicine 33, no. 4 (2014): 943-949. https://doi.org/10.3892/ijmm.2014.1639