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Apoptin enhances the oncolytic properties of Newcastle disease virus

Yantao Wu1, Xiaorong Zhang, Xiaobo Wang

  • 1Ministry of Education Key Lab for Avian Preventive Medicine, College of Veterinary Medicine, Yangzhou University, Yangzhou, China.

Intervirology
|August 26, 2011
PubMed
Abstract

Insights

Engineered Newcastle disease virus (NDV) expressing apoptin shows enhanced tumor cell killing. This novel oncolytic virus effectively suppressed tumor growth in mice without apparent toxicity, indicating its potential as an antitumor agent.

Area of Science:

  • Oncolytic virology
  • Molecular oncology
  • Viral gene therapy

Background:

  • Naturally occurring Newcastle disease virus (NDV) strains exhibit oncolytic properties.
  • Apoptin, a protein from chicken infectious anemia virus, induces apoptosis independently of p53 and Bcl-2 in cancer cells.
  • Combining NDV with apoptin may enhance cancer cell death.

Purpose of the Study:

  • To engineer an oncolytic NDV strain expressing apoptin.
  • To evaluate the antitumor efficacy of the recombinant virus (rFMW/AP) in vitro and in vivo.
  • To assess the safety profile of rFMW/AP.

Main Methods:

  • Reverse genetics was employed to construct the recombinant NDV (rFMW/AP) expressing apoptin.
  • In vitro studies utilized tumor cell lines (A459, SMMC7721) to assess cytotoxicity.
  • In vivo studies involved tumor-bearing mice (A549-induced tumors) to evaluate tumor growth suppression.

Main Results:

  • The recombinant rFMW/AP demonstrated increased potency in killing A459 and SMMC7721 tumor cells compared to the parental FMW strain.
  • rFMW/AP significantly suppressed tumor growth in mice with A549-induced tumors.
  • No apparent toxic effects were observed in normal cells or control mice treated with rFMW/AP.

Conclusions:

  • The engineered NDV expressing apoptin (rFMW/AP) is a potent oncolytic virus.
  • rFMW/AP shows enhanced antitumor efficacy and a favorable safety profile.
  • This recombinant NDV represents a promising novel therapeutic agent for cancer treatment.

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