The anti-tumor effect of Newcastle disease virus HN protein is influenced by differential subcellular targeting

Cancer Immunology, Immunotherapy : CII
Hong SuiLejing Li

Abstract

Immunotherapy is emerging as a major player in the current standard of care for aggressive cancers such as non-small cell lung cancer (NSCLC). The Newcastle disease virus with its tumor-specific replicative and oncolytic abilities is a promising immunotherapeutic candidate. A DNA vaccine expressing the major immunogenic hemagglutinin-neuraminidase (HN) protein of this virus has shown promising results as an immunotherapeutic agent. In the present study, three different DNA vaccine constructs encoding differentially targeted HN proteins (cytoplasmic or Cy-HN, secreted or Sc-HN and membrane-anchored or M-HN) were generated to evaluate their anti-tumor effect in vitro and in vivo. Although all three DNA constructs elicited an immune response, tumor-bearing mice intratumorally injected with M-HN demonstrated a significantly better anti-tumor effect than those injected with Cy-HN or Sc-HN. We also showed that this anti-tumor effect was mediated by higher lymphocyte proliferative response and CTL activity in mice intratumorally injected with M-HN. The membrane-anchored form of the HN protein appears to be an ideal candidate to develop as an immunotherapeutic agent for NSCLC.

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Citations

Mar 8, 2012·Future Microbiology·Dmitriy Zamarin, Peter Palese
Apr 17, 2015·Tumour Biology : the Journal of the International Society for Oncodevelopmental Biology and Medicine·Chun-Xiao ZhangJie Yuan
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Sep 1, 2017·International Journal of Cancer. Journal International Du Cancer·Theresa SchwaigerUlrike Blohm

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