Cepharanthine enhances in vitro and in vivo thermosensitivity of a mouse fibrosarcoma, FSa-II, based on increased apoptosis

  • Authors:
    • Yadi Wang
    • Masahiro Kuroda
    • Xian-Shu Gao
    • Shiro Akaki
    • Jun-Ichi Asaumi
    • Yoshihiro Okumura
    • Kohichi Shibuya
    • Shoji Kawasaki
    • Ikuo Joja
    • Hirokazu Kato
    • Kengo Himei
    • Shu-Ichi Dendo
    • Susumu Kanazawa
    • Yoshio Hiraki
  • View Affiliations

  • Published online on: March 1, 2004     https://doi.org/10.3892/ijmm.13.3.405
  • Pages: 405-411
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Abstract

Cepharanthine (Ce) is a biscoclaurine alkaloid extracted from Stephania cepharantha Hayata. In our previous study, Ce significantly enhanced thermosensitivity and thereby reduced thermotolerance in vitro, and intra-peritoneal injection of Ce slightly enhanced thermosensitivity in vivo. In the present study, we investigated Ce's effect in vitro on the pattern of cell death after heating and the effect of intra-tumoral injection of Ce on in vivo thermosensitivity using a mouse fibrosarcoma, FSa-II, and C3H/He mice. Ce significantly enhanced the in vitro thermosensitivity of FSa-II cells with heating at 44°C, with increased Ce concentration. Time-lapse microscopic observation of individual cells confirmed that Ce treatment hastened both apoptosis (specifically, apoptotic budding) and necrosis (as indicated by staining with propidium iodide). Staining with annexin V-enhanced green fluorescent protein indicated that Ce used concomitantly with heating significantly increased the proportion of cells in the early stage of apoptosis. Ce combined with heating also significantly increased the proportion of cells with high intracellular caspase-3 activity, as detected by a substrate of caspase-3, PhiPhiLux-G1D2. The intra-tumoral injection of Ce, followed by heating at 44°C, significantly delayed in vivo tumor growth, and this delay increased in a Ce concentration-dependent manner. Ce injected 30 min before heating delayed tumor growth more than Ce injected immediately before heating. These findings suggest the potential of Ce as a thermosensitizer to increase apoptosis of tumor cells.

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March 2004
Volume 13 Issue 3

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

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Spandidos Publications style
Wang Y, Kuroda M, Gao X, Akaki S, Asaumi J, Okumura Y, Shibuya K, Kawasaki S, Joja I, Kato H, Kato H, et al: Cepharanthine enhances in vitro and in vivo thermosensitivity of a mouse fibrosarcoma, FSa-II, based on increased apoptosis. Int J Mol Med 13: 405-411, 2004
APA
Wang, Y., Kuroda, M., Gao, X., Akaki, S., Asaumi, J., Okumura, Y. ... Hiraki, Y. (2004). Cepharanthine enhances in vitro and in vivo thermosensitivity of a mouse fibrosarcoma, FSa-II, based on increased apoptosis. International Journal of Molecular Medicine, 13, 405-411. https://doi.org/10.3892/ijmm.13.3.405
MLA
Wang, Y., Kuroda, M., Gao, X., Akaki, S., Asaumi, J., Okumura, Y., Shibuya, K., Kawasaki, S., Joja, I., Kato, H., Himei, K., Dendo, S., Kanazawa, S., Hiraki, Y."Cepharanthine enhances in vitro and in vivo thermosensitivity of a mouse fibrosarcoma, FSa-II, based on increased apoptosis". International Journal of Molecular Medicine 13.3 (2004): 405-411.
Chicago
Wang, Y., Kuroda, M., Gao, X., Akaki, S., Asaumi, J., Okumura, Y., Shibuya, K., Kawasaki, S., Joja, I., Kato, H., Himei, K., Dendo, S., Kanazawa, S., Hiraki, Y."Cepharanthine enhances in vitro and in vivo thermosensitivity of a mouse fibrosarcoma, FSa-II, based on increased apoptosis". International Journal of Molecular Medicine 13, no. 3 (2004): 405-411. https://doi.org/10.3892/ijmm.13.3.405