Abstract

Hepatocellular carcinoma (HCC) is one of the most frequent cancers worldwide, particularly in China. Despite the development of HCC treatment strategies, the survival rate remains unpleasant. Gene-targeted oncolytic viral therapy (GTOVT) is an emerging treatment modality—a kind of cancer-targeted therapy—which creates viral vectors armed with anti-cancer genes. The adenovirus is a promising agent for GAOVT due to its many advantages. In spite of the oncolytic adenovirus itself, the host immune response is the determining factor for the anti-cancer efficacy. In this review, we have summarized recent developments in oncolytic adenovirus engineering and the development of novel therapeutic genes utilized in HCC treatment. Furthermore, the diversified roles the immune response plays in oncolytic adenovirus therapy and recent attempts to modulate immune responses to enhance the anti-cancer efficacy of oncolytic adenovirus have been discussed.

Highlights

  • Hepatocellular carcinoma (HCC) is one of the most frequent cancers worldwide and the third leading cause of cancer death

  • We summarized the recent progress of the oncolytic adenovirus utilized in hepatocellular carcinoma (HCC) treatment, including direct oncolytic virotherapy and virus-based immunotherapy

  • Gene-targeted oncolytic virus therapy (GTOVT) had innovated a brand-new area in cancer treatment that provides the possibility of targeting all cancer types by designing viral vectors

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Summary

Frontiers in Oncology

Hepatocellular carcinoma (HCC) is one of the most frequent cancers worldwide, in China. Despite the development of HCC treatment strategies, the survival rate remains unpleasant. Gene-targeted oncolytic viral therapy (GTOVT) is an emerging treatment modality—a kind of cancer-targeted therapy—which creates viral vectors armed with anti-cancer genes. The adenovirus is a promising agent for GAOVT due to its many advantages. In spite of the oncolytic adenovirus itself, the host immune response is the determining factor for the anti-cancer efficacy. We have summarized recent developments in oncolytic adenovirus engineering and the development of novel therapeutic genes utilized in HCC treatment. The diversified roles the immune response plays in oncolytic adenovirus therapy and recent attempts to modulate immune responses to enhance the anti-cancer efficacy of oncolytic adenovirus have been discussed

INTRODUCTION
Genetic modifications
Gene Injection in Treatment of Advanced
GENETIC MODIFICATIONS OF ONCOLYTIC ADENOVIRUS
Genetic Modifications to Achieve Cancer Selectivity
Genetic Modifications to Increase Cancer Cell Killing Efficacy
Cell toxicity
Target HCC
DISCUSSION
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