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Adenovirus-delivered wwox inhibited lung cancer growth in vivo in a mouse model

Cancer Gene Therapy volume 23, pages 1–6 (2016)Cite this article

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Abstract

Lung cancer is the most prevalent and deadly malignancy worldwide. This study investigated the possibility of inhibiting lung cancer in vivo with adenovirus-delivered WW domain-containing oxidoreductase (wwox). The lung cancer model was established by inoculating A549 lung cancer cells into the pleural space of nude mice. The control or wwox adenovirus was injected into the pleural space 7 days after cell inoculation and 14 days after first injection. The tumor number and burdens were measured 2 weeks after second virus injection. The carcinoembryonic antigen (CEA) and alpha-feto protein (AFP) levels in pleural effusion were analyzed by enzyme-linked immunosorbent assay. Apoptosis, proliferation and angiogenesis of tumor cells were assessed by terminal deoxinucleotidyl transferase-mediated dUTP-fluorescein nick end labeling assay, proliferating cell nuclear antigen (PCNA) and CD31 staining, respectively. Ectopic wwox significantly reduced both the number and size of lung tumors accompanied by substantially lower CEA and AFP levels in pleural effusion. The expression levels of Bcl2, Bcl-xL, vascular endothelial growth factor, PCNA-positive and CD31-positive cells in the tumors were significantly decreased, whereas levels of p21 and p73 and apoptotic cells markedly increased in mice receiving the wwox virus. These data demonstrated that wwox delivered by adenovirus was able to inhibit the growth of lung cancer in vivo, indicating the potential of using wwox as a gene therapy agent for lung cancer.

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Acknowledgements

This study was supported by the 11th Annual ‘Six Talent Summit’ Grants of Jiangsu province (2014-WSW-064) and Wuxi Municipal Health Bureau General Grants (ML201209).

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Authors and Affiliations

  1. Department of Thoracic Surgery, The Affiliated Hospital of Jiangnan University and Wuxi Fourth People's Hospital, Wuxi, Jangsu, China

    Y Zhou, F Shou, H Zhang & Q You

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  1. Y Zhou
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Correspondence to Q You.

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Zhou, Y., Shou, F., Zhang, H. et al. Adenovirus-delivered wwox inhibited lung cancer growth in vivo in a mouse model. Cancer Gene Ther 23, 1–6 (2016). https://doi.org/10.1038/cgt.2015.56

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