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In vitro data supporting interferon plus cytotoxic agent combinations

D D Von Hoff1

  • 1Cancer Therapy and Research Center of South Texas, San Antonio.

Seminars in Oncology
|October 1, 1991
PubMed

Insights

This study found that combining interferon alfa (rIFN-alpha) with certain chemotherapy drugs like doxorubicin, fluorouracil, and etoposide shows synergistic antitumor effects in vitro. These promising combinations warrant further clinical trials for cancer treatment.

Area of Science:

  • Oncology
  • Pharmacology
  • Cancer Research

Background:

  • The human tumor cloning system is a validated in vitro assay.
  • This assay predicts patient response to antineoplastic and biologic agents.
  • It also screens novel cytotoxic and biologic agents for antitumor activity.

Purpose of the Study:

  • To investigate synergistic combinations of interferon alfa (rIFN-alpha) and cytotoxic agents.
  • To evaluate these combinations using the human tumor cloning system in vitro.

Main Methods:

  • Utilized the human tumor cloning system for in vitro drug sensitivity testing.
  • Assessed combinations of rIFN-alpha with doxorubicin, fluorouracil, and etoposide.
  • Evaluated synergism across diverse tumor types.

Main Results:

  • Significant synergism was observed for doxorubicin + rIFN-alpha.
  • Synergistic effects were also noted for fluorouracil + rIFN-alpha.
  • Etoposide + rIFN-alpha demonstrated significant synergism across various tumor types.

Conclusions:

  • Selected combinations of interferon alfa and cytotoxic agents exhibit in vitro synergism.
  • These findings support the clinical investigation of these combined therapies.
  • The human tumor cloning assay is valuable for identifying effective combination cancer treatments.

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