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Novel Oncolytic Virus Armed with Cancer Suicide Gene and Normal Vasculogenic Gene for Improved Anti-Tumor Activity

Su-Nam Jeong1, So Young Yoo1

  • 1BIO-IT Foundry Technology Institute, Pusan National University, Busan 46241, Korea.

Cancers
|April 30, 2020
PubMed

Insights

A novel oncolytic vaccinia virus (NOV) engineered to express TRAIL and Ang1 demonstrates potent, broad-spectrum cancer cell killing and tumor growth inhibition. This enhanced virus offers promising biosafety and therapeutic potential for solid tumors.

Area of Science:

  • Oncolytic virotherapy
  • Cancer biology
  • Molecular virology

Background:

  • Oncolytic viruses offer targeted cancer therapy.
  • Engineering viruses can enhance efficacy and safety.
  • Current therapies like cisplatin lack tumor selectivity.

Purpose of the Study:

  • To develop a novel oncolytic vaccinia virus (NOV) with enhanced cancer selectivity and normal vessel reconstructive activity.
  • To investigate the pan-cancer oncolytic potency and therapeutic effects of NOV.
  • To evaluate the biosafety and anti-tumor immune response induced by NOV.

Main Methods:

  • Genetic engineering of vaccinia virus (VV) by replacing thymidine kinase (vTk) and vaccinia growth factor (VGF) genes with TNF-related apoptosis-inducing ligand (TRAIL) and angiopoietin 1 (Ang1).
  • In vitro testing on diverse human and mouse cancer cell lines.
  • In vivo studies using a CT26 mouse colon cancer model.
  • Assessment of apoptosis, tumor growth, survival rates, CD8 expression, and TUNEL staining.

Main Results:

  • NOV exhibited potent, pan-cancer-specific oncolytic activity against various cancer cell lines.
  • NOV induced rapid tumor apoptosis, outperforming cisplatin.
  • Virus treatment significantly attenuated tumor growth and improved survival in a mouse model.
  • Advanced genetic engineering (NOV) showed superior anti-tumor effects compared to intermediate modifications.

Conclusions:

  • NOV effectively induces cancer cell apoptosis and stimulates anti-tumor immunity.
  • NOV demonstrates high biosafety and significant therapeutic potential for solid tumors.
  • This engineered virus represents a promising next-generation agent for solid tumor virotherapy.
Keywords:
TRAILangiopoietin 1oncolytic virus

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