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Combined Antitumor Effect of Ad-bFGF-siRNA and Ad-Vpr on the Growth of Xenograft Glioma in Nude Mouse Model

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Pathology & Oncology Research

Abstract

Basic fibroblast growth factor (bFGF) has been demonstrated to correlate with glioma grade and clinical outcome and has established its possible usefulness as a target for glioma therapy. Vpr has been described as an antitumor agent and displays a potent antitumor nature. Here, we try to investigate whether a combined treatment with bFGF-siRNA and Vpr gene would have a enhanced effectiveness on glioma in vitro and in vivo.After treatments with only Ad-bFGF-siRNA, only Ad-Vpr, and a combination of both, we assessed the changes in cell proliferation, cell cycle, and apoptosis in vitro by the methods of MTT, PI and FITC-AnnexinV double staining, respevtively. In addition, we also evaluated the combined effect of bFGF-siRNA and Vpr gene therapy on glioma in vivo using xenograft glioma models in nude mice. Combined Ad-bFGF-siRNA and Ad-Vpr treatment was more better successful in inhibiting cell proliferation in comparison with treatments of either Ad-bFGF-siRNA or Ad-Vpr alone. Treatment of Ad-Vpr alone or a treatment of a combination of Ad-bFGF-siRNA and Ad-Vpr induced the G2/M cell cycle arrest and apoptosis; however, combined treatment was more effective than the Ad-Vpr treatment alone. Although each single treatment can slow the growth of xenograft glioma, the combined treatment with Ad-bFGF-siRNA and Ad-Vpr was better than either the Ad-bFGF-siRNA or Ad-Vpr treatment alone. Our results suggest that the combination therapy with bFGF-siRNA and Vpr gene can achieve a enhanced activity of anti-glioma, supporting the idea that the combination of these two antitumor agents could open new perspectives in glioma therapy.

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Acknowledgement

This work was supported by National Natural Sciences Foundation of China (30672158)

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Authors and Affiliations

  1. Clinical Lab, Tianjin Huan Hu Hospital, Tianjin, 300060, China

    Biao Zhang

  2. Department of Neurosurgery, Tianjin First Center Hospital, Tianjin, 300192, China

    Xuequan Feng

  3. Department of Neurosurgery, Tianjin Huan Hu Hospital, 122# Qixiangtai Road, Hexi District, Tianjin, 300060, China

    Jinhuan Wang

  4. Key Lab for Critical Care Medicine of the Ministry of Health, Tianjin First Center Hospital, Tianjin, 300192, China

    Xinnu Xu, Na Lin & Hongsheng Liu

Authors
  1. Biao Zhang
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  2. Xuequan Feng
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  3. Jinhuan Wang
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  4. Xinnu Xu
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  5. Na Lin
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  6. Hongsheng Liu
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Corresponding author

Correspondence to Jinhuan Wang.

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Biao Zhang and Xuequan Feng contributed equally to this work.

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Zhang, B., Feng, X., Wang, J. et al. Combined Antitumor Effect of Ad-bFGF-siRNA and Ad-Vpr on the Growth of Xenograft Glioma in Nude Mouse Model. Pathol. Oncol. Res. 17, 237–242 (2011). https://doi.org/10.1007/s12253-010-9303-5

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  • DOI: https://doi.org/10.1007/s12253-010-9303-5

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