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<p>Systemic delivery of oncolytic viruses (OVs) is limited by neutralizing antibodies and poor intratumoral bioavailability. Here we developed genetically engineered, immune-compatible cell membranes expressing a chimeric antigen receptor to cloak OVs, creating a tumor-targeted viral delivery platform (iNV-GOV) that shields virions from immune recognition while guiding them to tumors. The OV payload encodes an N-terminal gasdermin under a heat-shock promoter enabling ultrasound-induced mild hyperthermia to trigger tumor-specific pyroptosis, accelerate oncolysis and promote rapid viral release from lysed tumor cells, thereby amplifying infection of neighboring tumor populations. Following systemic administration, iNV-GOV efficiently targets and infects tumor cells, induces pyroptosis upon ultrasound activation and elicits robust antitumor immunity in patient-derived xenograft models in humanized mice. Collectively, this systemically injectable, tumor-targeted OV platform enables rapid and continuous intratumoral viral propagation and represents a promising strategy for treating a wide range of cancers.</p>

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Genetic engineering of systemically injectable oncolytic viruses for pyroptosis-accelerated cancer virotherapy

  • 期刊论文

  • 发表日期：

    2026年1月16日

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  • Xiaohong Chen,
  • Minqi Yang,
  • Yuxuan Chen,
  • Yao Zhang,
  • Shuang Wang,
  • Jiaqi Meng,
  • Zunqiao Zhu,
  • Wen Li,
  • Wei Wei,
  • Yuan Ping,
  • Tingbo Liang

摘要

Systemic delivery of oncolytic viruses (OVs) is limited by neutralizing antibodies and poor intratumoral bioavailability. Here we developed genetically engineered, immune-compatible cell membranes expressing a chimeric antigen receptor to cloak OVs, creating a tumor-targeted viral delivery platform (iNV-GOV) that shields virions from immune recognition while guiding them to tumors. The OV payload encodes an N-terminal gasdermin under a heat-shock promoter enabling ultrasound-induced mild hyperthermia to trigger tumor-specific pyroptosis, accelerate oncolysis and promote rapid viral release from lysed tumor cells, thereby amplifying infection of neighboring tumor populations. Following systemic administration, iNV-GOV efficiently targets and infects tumor cells, induces pyroptosis upon ultrasound activation and elicits robust antitumor immunity in patient-derived xenograft models in humanized mice. Collectively, this systemically injectable, tumor-targeted OV platform enables rapid and continuous intratumoral viral propagation and represents a promising strategy for treating a wide range of cancers.