The phenylhexyl isothiocyanate induces apoptosis and inhibits leukemia cell growth in vivo

  • Authors:
    • Lulu Lu
    • Delong Liu
    • Xudong Ma
    • Anastasia Beklemishev
    • Karen Seiter
    • Tauseef Ahmed
    • J. W. Chiao
  • View Affiliations

  • Published online on: December 1, 2006     https://doi.org/10.3892/or.16.6.1363
  • Pages: 1363-1367
Metrics: Total Views: 0 (Spandidos Publications: | PMC Statistics: )
Total PDF Downloads: 0 (Spandidos Publications: | PMC Statistics: )


Abstract

Isothiocyanates are potent chemopreventive agents for carcinogen-induced cancers in rodents. The major mode of action for chemoprevention is cytoprotection i.e. inducing detoxifying enzymes to remove the carcinogens, thus blocking the initiation of carcinogenesis. Analysis has indicated that isothiocyanates also act at the post-initiation levels of carcinogenesis. We have also reported that the phenylhexyl isothiocyanate (PHI) induced growth arrest and apoptosis in human leukemia HL-60 cells in culture. Since then we have investigated the in vivo efficacy of PHI. The effects of PHI were evaluated in immunodeficient mice, with xenografts of human leukemia HL-60 cells. The maximum tolerated dose (MTD) was determined. The experimental mice received 80% of the MTD. Oral feedings of PHI significantly reduced tumor incidence (p<0.05) without overt toxicity. PHI inhibited cell cycle progression through the down-regulation of cyclin expression, Rb phosphorylation and the up-regulation of the cdk-inhibitors. Apoptosis was significantly increased in the treated tumors but not in the normal mouse tissues. In conclusion, PHI induced apoptosis and inhibited the growth of xenografts by targeting the cell cycle regulators. PHI induced selective apoptosis effects in the rapidly growing tumor cells but not in the normal tissues.

Related Articles

Journal Cover

December 2006
Volume 16 Issue 6

Print ISSN: 1021-335X
Online ISSN:1791-2431

Sign up for eToc alerts

Recommend to Library

Copy and paste a formatted citation
x
Spandidos Publications style
Lu L, Liu D, Ma X, Beklemishev A, Seiter K, Ahmed T and Chiao JW: The phenylhexyl isothiocyanate induces apoptosis and inhibits leukemia cell growth in vivo. Oncol Rep 16: 1363-1367, 2006
APA
Lu, L., Liu, D., Ma, X., Beklemishev, A., Seiter, K., Ahmed, T., & Chiao, J.W. (2006). The phenylhexyl isothiocyanate induces apoptosis and inhibits leukemia cell growth in vivo. Oncology Reports, 16, 1363-1367. https://doi.org/10.3892/or.16.6.1363
MLA
Lu, L., Liu, D., Ma, X., Beklemishev, A., Seiter, K., Ahmed, T., Chiao, J. W."The phenylhexyl isothiocyanate induces apoptosis and inhibits leukemia cell growth in vivo". Oncology Reports 16.6 (2006): 1363-1367.
Chicago
Lu, L., Liu, D., Ma, X., Beklemishev, A., Seiter, K., Ahmed, T., Chiao, J. W."The phenylhexyl isothiocyanate induces apoptosis and inhibits leukemia cell growth in vivo". Oncology Reports 16, no. 6 (2006): 1363-1367. https://doi.org/10.3892/or.16.6.1363