Cancer Immunology, Immunotherapy

, Volume 41, Issue 5, pp 309–316

Antiproliferative effects of bacillus Calmette-Guérin and interferon α2b on human bladder cancer cells in vitro

Authors

  • Kimberley Pryor
    • Centre for ImmunologySt. Vincent's Hospital
  • Phillip Stricker
    • Department of UrologySt. Vincent's Hospital
  • Pamela Russell
    • Gemtourinary Cancer Research Group, Oncology Research CentrePrince of Wales Hospital
    • The University of New South Wales
  • David Golovsky
    • Department of UrologySt. Vincent's Hospital
  • Ronald Penny
    • Centre for ImmunologySt. Vincent's Hospital
    • The University of New South Wales
Original Article Bladder Neoplasms, Carcinoma, Transitional Cell, BCG Vaccine, Interferon, Immunotherapy

DOI: 10.1007/BF01517219

Cite this article as:
Pryor, K., Stricker, P., Russell, P. et al. Cancer Immunol Immunother (1995) 41: 309. doi:10.1007/BF01517219

Abstract

Direct inhibitory effects of bacillus Calmette-Guérin (BCG) and interferon α2b (IFNα2b) on six human bladder carcinoma cell lines, UCRU-BL-13, UCRU-BL-17, UCRU-BL-28, 5637, T24 and J82, were studied using an in vitro proliferation assay. Effects on proliferation following exposure to BCG or IFNα2b were analysed by [3H]thymidine incorporation over 7 days. BCG had an antiproliferative effect on all bladder lines, while sensitivity to IFNα2b varied greatly, being as remarkably low as 1 U/ml for some lines. The antiproliferative effect was greatest when cells were exposed continuously to either agent, but was still evident with a limited exposure. When clinical concentrations were simulated in vitro, BCG+IFNα2b was more effective than BCG alone and as effective as a double BCG concentration. We conclude that, in addition to their immunomodulatory effects, BCG and IFNα2b directly inhibit the proliferation of human bladder cancer cells, and often at extremely low concentrations.

Key words

Bladder neoplasms Carcinoma transitional cell BCG vaccine Interferon Immunotherapy

Copyright information

© Springer-Verlag 1995