The therapeutic effects of intratumoral injection of IL12IL2GMCSF fusion protein on canine tumors
Du, X.; Zhang, B.; Hu, F.; Xie, C.; Tian, H.; Gu, Q.; Gong, H.; Bai, X.; Zhang, J.
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Regulating the immune system through tumor immunotherapy to defeat tumors is currently one of the most popular methods of tumor treatment. We previously found that the combinations of IL12, IL2 and GMCSF has superior antitumor activities. In this study, IL12IL2GMCSF fusion protein was produced from 293 cells transduced by expression lentiviral vector. IL12IL2GMCSF fusion protein was injected into canine tumors, and the efficacy was monitored to evaluate the potential of tumor immunotherapy. In 14 canines injected with IL12IL2GMCSF protein, 6 had a complete response (CR), 7 had a partial response (PR), and 1 had stable disease (SD). IL12IL2GMCSF fusion protein has great anti-tumor potential. Intratumoral injection of IL12IL2GMCSF can effectively treat tumors without severe adverse effects. It provides a promising immune therapeutics in canine cancers.
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