Responsiveness of human prostate carcinoma bone tumors to interleukin-2 therapy in a mouse xenograft tumor model

S. V. Kocheril, D. J. Grignon, C. Y. Wang, R. L. Maughan, E. J. Montecillo, B. Talati, S. Tekyi-Mensah, J. E. Pontes, G. G. Hillman

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

We have tested an immunotherapy approach for the treatment of metastatic prostate carcinoma using a bone tumor model. Human PC-3 prostate carcinoma tumor cells were heterotransplanted into the femur cavity of athymic Balb/c nude mice. Tumor cells replaced marrow cells in the bone cavity, invaded adjacent bone and muscle tissues, and formed a palpable tumor at the hip joint. PC-3/IF cell lines, generated from bone tumors by serial in vivo passages, grew with faster kinetics in the femur and metastasized to inguinal lymph nodes. Established tumors were treated with systemic interleukin-2 (1L-2) injections. IL-2 significantly inhibited the formation of palpable tumors and prolonged mouse survival at nontoxic low doses. Histologically IL-2 caused vascular damage and infiltration of polymorphonuclear cells and lymphocytes in the tumor as well as necrotic areas with apoptotic cells. These findings suggest destruction of tumor cells by systemic 1L-2 therapy and IL-2 responsiveness of prostate carcinoma bone tumors.

Original languageEnglish (US)
Pages (from-to)408-416
Number of pages9
JournalCancer detection and prevention
Volume23
Issue number5
DOIs
StatePublished - Sep 24 1999

Keywords

  • Bone tumors
  • Immunotherapy
  • Prostate carcinoma

ASJC Scopus subject areas

  • Oncology
  • Cancer Research

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    Kocheril, S. V., Grignon, D. J., Wang, C. Y., Maughan, R. L., Montecillo, E. J., Talati, B., Tekyi-Mensah, S., Pontes, J. E., & Hillman, G. G. (1999). Responsiveness of human prostate carcinoma bone tumors to interleukin-2 therapy in a mouse xenograft tumor model. Cancer detection and prevention, 23(5), 408-416. https://doi.org/10.1046/j.1525-1500.1999.99039.x