Antitumor effects of a dual cancer-specific oncolytic adenovirus on colorectal cancer in vitro and in vivo

Yang,Guohua; Meng,Xiangwei; Sun,Lili; Hu,Ningning; Jiang,Shuang; Sheng,Yuan; Chen,Zhifei; Zhou,Ye; Chen,Dexing; Li,Xiao; Jin,Ningyi

doi:10.3892/etm.2014.2086

February-2015 Volume 9 Issue 2

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February-2015 Volume 9 Issue 2

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Article Open Access

Antitumor effects of a dual cancer-specific oncolytic adenovirus on colorectal cancer in vitro and in vivo

Authors:
- Guohua Yang
- Xiangwei Meng
- Lili Sun
- Ningning Hu
- Shuang Jiang
- Yuan Sheng
- Zhifei Chen
- Ye Zhou
- Dexing Chen
- Xiao Li
- Ningyi Jin
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Affiliations: Department of Gastroenterology, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China, Department of Head and Neck Surgery, Jilin Province Tumor Hospital, Changchun, Jilin 130001, P.R. China, Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun, Jilin 130122, P.R. China, Jilin Province Qianwei Hospital, Changchun, Jilin 130031, P.R. China

Copyright: © Yang et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
Pages: 327-334
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Published online on: November 24, 2014

https://doi.org/10.3892/etm.2014.2086
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Abstract

The efficacy and specificity of treatment are major challenges for cancer gene therapy. Oncolytic virotherapy is an attractive drug delivery platform for cancer gene therapy. In the present study, the dual‑specific antitumor oncolytic adenovirus, Ad‑Apoptin‑hTERT‑E1a, was used to infect SW1116 human colorectal carcinoma (CRC) cell lines and CT26 mouse‑CRC‑cell bearing BALB/c mouse models for testing antitumor effects in vitro and in vivo. The in vitro assays revealed that infection with Ad‑Apoptin‑hTERT‑E1a induced a significant cytotoxic effect on the CRC cell line, SW1116; however, the normal human cell line, GES, was only slightly inhibited by the recombinant adenovirus. Acridine orange and ethidium bromide staining and an annexin V assay indicated that infection of SW1116 cells with Ad‑Apoptin‑hTERT‑E1a resulted in a significant induction of apoptosis. Furthermore, western blotting and flow cytometry revealed a decrease in the mitochondrial membrane potential (MMP), the release of cytochrome c and the activation of caspase 3, 6 and 7 in Ad‑Apoptin‑hTERT‑E1a‑infected SW1116 cells. In the animal models, Ad‑Apoptin‑hTERT‑E1a was shown to significantly inhibit tumor growth and extend the survival times of the animals. Therefore, the experimental results indicated that Ad‑Apoptin‑hTERT‑E1a has potential for application in tumor gene therapy.

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Journals

International Journal of Molecular Medicine

International Journal of Oncology

Molecular Medicine Reports

Oncology Reports

Experimental and Therapeutic Medicine

Oncology Letters

Biomedical Reports

Molecular and Clinical Oncology

World Academy of Sciences Journal

International Journal of Functional Nutrition

International Journal of Epigenetics

Medicine International

Antitumor effects of a dual cancer-specific oncolytic adenovirus on colorectal cancer in vitro and in vivo

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