Huachansu mediates cell death in non-Hodgkin's lymphoma by induction of caspase-3 and inhibition of MAP kinase

  • Authors:
    • Ekem T. Efuet
    • Xiao-Ping Ding
    • Carrie Cartwright
    • Yong Pan
    • Lorenzo Cohen
    • Peiying Yang
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  • Published online on: June 11, 2015     https://doi.org/10.3892/ijo.2015.3044
  • Pages: 592-600
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Abstract

Huachansu (HCS), a hot water extract of the skin glands of Bufo gargarizans (B. melanostictus), has been used extensively in the treatment of various solid tumors in Asia, particularly in China. However, its effect on the growth of malignancies of hematopoietic origin, particularly lymphomas, is limited. Here we investigated the antiproliferative effect and molecular mechanisms of HCS using non-Hodgkin's lymphoma (NHL) Raji, Ramos, and Namalwa cells and the mantle cell lymphoma cells SP53. HCS inhibited proliferation in these cell lines with an IC50 ranging from 3.1 to 25 µl/ml. At a concentration of 25 µl/ml, HCS triggered a sub-G1 arrest in Ramos cells and induced early to late apoptotic cell death. Cleaved caspase-3 was formed in a concentration-dependent manner in Ramos cells following treatment with HCS for 24 h. Intriguingly, when the Ramos cells were treated with the caspase inhibitor ZDEVD, the apoptotic activity of HCS was partially blocked. Furthermore, HCS also blocked the expression of survivin and pRB proteins in a concentration-dependent manner in Ramos cells. Mechanistically, HCS downregulated both the MAPK gene and proteins in Ramos cells. Collectively, our data suggest that HCS is effective in inducing cell death and apoptosis, in part, by activating caspase-3 activity and suppressing MAP kinase in NHL cells.
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August-2015
Volume 47 Issue 2

Print ISSN: 1019-6439
Online ISSN:1791-2423

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Spandidos Publications style
Efuet ET, Ding X, Cartwright C, Pan Y, Cohen L and Yang P: Huachansu mediates cell death in non-Hodgkin's lymphoma by induction of caspase-3 and inhibition of MAP kinase. Int J Oncol 47: 592-600, 2015
APA
Efuet, E.T., Ding, X., Cartwright, C., Pan, Y., Cohen, L., & Yang, P. (2015). Huachansu mediates cell death in non-Hodgkin's lymphoma by induction of caspase-3 and inhibition of MAP kinase. International Journal of Oncology, 47, 592-600. https://doi.org/10.3892/ijo.2015.3044
MLA
Efuet, E. T., Ding, X., Cartwright, C., Pan, Y., Cohen, L., Yang, P."Huachansu mediates cell death in non-Hodgkin's lymphoma by induction of caspase-3 and inhibition of MAP kinase". International Journal of Oncology 47.2 (2015): 592-600.
Chicago
Efuet, E. T., Ding, X., Cartwright, C., Pan, Y., Cohen, L., Yang, P."Huachansu mediates cell death in non-Hodgkin's lymphoma by induction of caspase-3 and inhibition of MAP kinase". International Journal of Oncology 47, no. 2 (2015): 592-600. https://doi.org/10.3892/ijo.2015.3044