In vivo inhibition of tumor growth of B16 melanoma by recombinant interleukin 1 beta. I. Tumor inhibition parallels lymphocyte-activating factor activity of interleukin 1 beta proteins

Cytokine
K M PezzellaJ J Huang

Abstract

Seven daily intratumoral injections of human recombinant interleukin 1 beta (rHu-IL 1 beta) inhibit the growth of B16 melanoma in syngeneic female C57BL/6 mice. Inhibition was dose dependent and ranged from 36% to 93%. Other routes of injection of rHu-IL 1 beta (intramuscular, intraperitoneal, intradermal) inhibited tumor growth but to a lesser degree (27% to 50%). Two different rIL 1 beta s, one a mutein of rHu-IL 1 beta (Glu-4) and the other one murine IL 1 beta (rM-IL 1 beta), were tested in the tumor inhibition model. rM-IL 1 beta inhibited tumor growth at lower concentrations than did rHu-IL 1 beta and also had enhanced IL 1 activity in the thymocyte assay in vitro. The mutein of rHu-IL 1 beta (Glu-4) had significantly reduced in vitro IL1 activity and did not inhibit tumor growth. No cytotoxic or cytostatic effects of rHu-IL 1 beta were observed in in vitro assays. These results suggest that rHu-IL 1 beta has antitumor activity in vivo that is probably not due to its direct effects on B16 cells but rather is mediated by secondary effects of IL 1 beta.

Citations

Jan 1, 1993·Cancer Investigation·C S Johnson
Nov 8, 2015·Fish & Shellfish Immunology·Xiaowen XuChengyu Hu
Nov 1, 2011·International Dental Journal·Vinicius RosaJacques E Nör
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