Oncolytic adenovirus modified to increase its infectivity for gastrointestinal cancer
Project/Area Number |
16591381
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Digestive surgery
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Research Institution | Chiba Cancer Research Institute |
Principal Investigator |
TAGAWA Masatoshi Chiba Cancer Ctr.Res.Inst., Div. of Path., Head, 病理研究部, 部長 (20171572)
|
Co-Investigator(Kenkyū-buntansha) |
OCHIAI Takenori Graduate School of Chiba Univ., Dept. of Academic Surg., Professor, 大学院・医学研究院・先端応用外科, 教授 (80114255)
|
Project Period (FY) |
2004 – 2005
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Project Status |
Completed (Fiscal Year 2005)
|
Budget Amount *help |
¥3,600,000 (Direct Cost: ¥3,600,000)
Fiscal Year 2005: ¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 2004: ¥2,100,000 (Direct Cost: ¥2,100,000)
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Keywords | Gastrointestival tumors / Gene therapy / Transcriptional control region / E1A / E1B region / Oncolytic adenovirus / Fiber region / Suvivin / Shuttle vector / 腫瘍プロモーター / 腫瘍融解性ウイルス / ファイバー・ノブ構造 / サバイビン / ミッドカイン |
Research Abstract |
Adenovirus (Ad) has a strong cytotoxic activity and the E1A protein, one of the early transcriptional products, has a pivotal role in viral replication in the infected cells. Ad modified to control the E1A gene expression with a putative tumor promoter can thereby be oncolytic. We examined the regulatory regions of the genes which were predominantly expressed in tumors with the luciferase assay and found that a 500 bp and a 600 bp upstream regions of the survivin and midkine genes, respectively, were responsible for the transcriptional control. The cellular receptors of the Ad type 5 is CAR (Coxsackievirus and Adenovirus Receptor) and the expression is often downregulated in gastrointestinal tumors. In contrast, the expression of CD46, which is a receptor of Ad type 35, is rather upregulated in the tumors and consequently, the Ad bearing CD46 binding sites can increase the infectivity to the tumors. We thereby constructed a vector system consisting of vector DNA that could activate the E1A and E1B genes with an exogenous regulatory region and another vector that contained the rest of the whole Ad sequences, in which the fiber-knob region was replaced with the Ad type 35-derived one. In vitro ligation of the vectors enables the construction of the Ad bearing the type 35 fiber-knob structure in the E3 region. The oncolytic Ad with the type 35 fiber-knob can be produced with easy compared with conventional methods that required in vivo recombination. The chimeric oncolytic Ad prepared with our vector system was more cytotoxic to CAR-low human tumors than conventional type 5 oncolytic Ad and was as cytotoxic as the type 5 Ad to CAR-high tumors.
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Report
(3 results)
Research Products
(46 results)
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[Journal Article] Vaccination of apoptotic Fas ligand-expressing tumors decreased antitumor responses by enhanced production of immunosuppressive cytokines.2005
Author(s)
Wada, A., Tada, Y., Shimozato, 0., Takiguchi, Y., Tatsumi, K., Kuriyama, T., Tagawa, M.
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Int.J.Cancer 115
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Clin.Cancer Res. 11
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[Journal Article] Increased infectivity of adenovirus type 5 bearing type 11 or type 35 fibers to human esophageal and oral carcinoma cells.2005
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Yu, L., Takenobu, H., Shimozato, O., Kawamura, K., Nimura, Y., Seki, N., Ugai, K., Tanzawa, H., Shimada, H., Ochiai, T., Tagawa, M
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Journal Title
Oncol.Rep. 14
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Journal Title
Biochem.Biophys.Res.Commun. 335
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Journal Title
Cancer Res. 65
Pages: 325-330
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[Journal Article] Insertion of an exogenous promoter in the E1A regulatory region of adenovirus does not disturb viral replication despite reduced E1A transcription.2004
Author(s)
Yu, L., Hamada, K., Namba, M., Kadomatsu, K., Muramatsu, T., Matsubara, S., Tagawa, M.
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Journal Title
Cancer Lett. 203
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[Journal Article] Midkine promoter can mediate transcriptional activation of a fused suicide gene in a broader range of human breast cancer compared with c-erbB-2 promoter.2004
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Journal Title
Oncology 66
Pages: 143-146
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[Journal Article] Elevated expression of DNA polymerase x expression in human lung cancer is associated with p53 inactivation: Negative regulation of POLKpromoter activity by p53.2004
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Int.J.Oncol. 25
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Eur.J.Immunol. 34
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[Journal Article] Midkine promoter-driven suicide gene expression and -mediated adenovirus replication produced cytotoxic effects to immortalized and tumour cells.2004
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Yu, L., Hamada, K., Namba, M., Kadomatsu, K., Muramatsu, T., Matsubara, S., Tagawa, M.
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Journal Title
Eur.J.Cancer 40
Pages: 1787-1794
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Journal Title
Cancer Immunol.Immunother. 53
Pages: 786-792
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[Journal Article] A Cox-2 promoter-based replication-selective adenoviral vector to target the Cox-2-expressing human bladder cancer cells.2004
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Shirakawa, T., Hamada, K., Zhang, Z., Okada, H., Tagawa, M., Kamidono, S., Kawabata, M., Gotoh, A.
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Cancer Res. 10
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[Journal Article] Midkine promoter-based conditionally replicative adenovirus for malignant glioma therapy.2004
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Oncol Rep. 12
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