SIRPα antibody combined with oncolytic virus OH2 protects against tumours by activating innate immunity and reprogramming the tumour immune microenvironment

Defeng Kong, Zhenrong Yang, Guoliang Li, Quanyou Wu, Zhaoru Gu, Duo Wan, Qi Zhang, Xiaoli Zhang, Shujun Cheng, Binlei Liu, Kaitai Zhang & Wen Zhang
Abstract Background The combination of oncolytic viruses (OVs) with immune checkpoint blockades is a research hotspot and has shown good efficacy. Here, we present the first attempt to combine oncolytic herpes simplex virus 2 (OH2) with an anti-SIRPα antibody as an antitumour treatment. Our results provide unique insight into the combination of innate immunity with OV. Methods We verified the polarization and activation of OH2 in RAW264.7 cells in vitro. Subsequently, we evaluated the antitumour...
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