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Tat‐PTD‐modified Oncolytic Adenovirus Driven by the SCG3 Promoter and ASH1 Enhancer for Neuroblastoma Therapy
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Immunology, Genetics and Pathology, Clinical Immunology. (Magnus Essand)
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Immunology, Genetics and Pathology, Clinical Immunology. (Magnus Essand)
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Immunology, Genetics and Pathology, Clinical Immunology. (Magnus Essand)
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Immunology, Genetics and Pathology, Clinical Immunology.
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2013 (English)In: Human Gene Therapy, ISSN 1043-0342, E-ISSN 1557-7422, Vol. 24, no 8, 766-775 p.Article in journal (Refereed) Published
Abstract [en]

Secretogranin III (SGC3) belongs to the granin family and is highly expressed in endocrine and neural tissues. The human SCG3 promoterhas not yet been characterized. We identified that a 0.5 kb DNA fragment upstream of the SCG3 gene can selectively drivetransgene expression in neuroblastoma cell lines. The strength of transgene expression was further increased and specificity maintained,by addition of the human achaete‐scute complex homolog 1 (ASH1) enhancer. We developed an oncolytic serotype 5‐basedadenovirus, where the SCG3 promoter and ASH1 enhancer drive E1A gene expression. The virus was further modified with a cellpenetratingpeptide (Tat‐PTD) in the virus capsid, which we have previously shown results in increased adenovirus transductionefficiency of many neuroblastoma cell lines. The virus, Ad5PTD(ASH1‐SCG3‐E1A), shows selective and efficient killing of neuroblastomacell lines in vitro, including cisplatin‐, etoposide‐ and doxorubicin‐insensitive neuroblastoma cells. Furthermore, it delays tumorgrowth and thereby prolonged survival for nude mice harboring subcutaneous human neuroblastoma xenograft. In conclusion, wereport a novel oncolytic adenovirus with potential use for neuroblastoma therapy.

Place, publisher, year, edition, pages
2013. Vol. 24, no 8, 766-775 p.
Keyword [en]
Tat-PTD, neuroblastoma, cancer therapy, adenovirus
National Category
Medical Biotechnology (with a focus on Cell Biology (including Stem Cell Biology), Molecular Biology, Microbiology, Biochemistry or Biopharmacy)
Research subject
Clinical Virology; Medical Virology; Molecular Biotechnology; Molecular Medicine
Identifiers
URN: urn:nbn:se:uu:diva-203651DOI: 10.1089/hum.2012.132ISI: 000323181200007OAI: oai:DiVA.org:uu-203651DiVA: diva2:637205
Funder
Swedish Cancer Society, 10‐0105Swedish Cancer Society, 10‐0552Swedish Research Council, K2013‐55X‐22191‐01‐3
Note

De två (2) första författarna delar förstaförfattarskapet.

Other funds:

TheSwedish Cancer Society (10‐0105 and 10‐0552), the Swedish ChildrenCancer Foundation (PROJ10/027, NBCNSPDHEL10/013,JIN C. ET AL. 20138PROJ11/062), Gunnar Nilsson’s Cancer Foundation, the SwedishResearch Council (K2013‐55X‐22191‐01‐3) and the Marcus andMarianne Wallenberg’s Foundation.

Available from: 2013-07-16 Created: 2013-07-16 Last updated: 2017-12-06Bibliographically approved
In thesis
1. Adenovirus for Cancer Therapy: With a Focus on its Surface Modification
Open this publication in new window or tab >>Adenovirus for Cancer Therapy: With a Focus on its Surface Modification
2013 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Adenovirus serotype 5 (Ad5) is widely used as an oncolytic agent for cancer therapy. However, its infectivity is highly dependent on the expression level of coxsackievirus-adenovirus receptor (CAR) on the surface of tumor cells. We engineered Ad5 virus with the protein transduction domain (PTD) from the HIV-1 Tat protein (Tat-PTD) inserted in the hypervariable region 5 (HVR5) of the hexon protein in the virus capsid. Tat-PTD-modified Ad5 shows a dramatically increased transduction level of CAR-negative cells and bypassed fiber-mediated transduction. It also overcomes the fiber-masking problem, which is caused by release of excess fiber proteins from infected cells. To achieve specific viral replication in neuroblastoma and neuroendocrine tumor cells, we identified the secretogranin III (SCG3) promoter and constructed an adenovirus Ad5PTD(ASH1-SCG3-E1A) wherein E1A gene expression is controlled by the SCG3 promoter and the achaete-scute complex homolog 1 (ASH1) enhancer. This virus shows selective and efficient killing of neuroblastoma cell lines in vitro, and delays human neuroblastoma xenograft tumor growth on nude mice. To further enhance the viral oncolytic efficacy, we also switched the fiber 5 to fiber 35 to generate Ad5PTDf35. This vector shows dramatically increased transduction capacity of primary human cell cultures including hematopoietic cells and their derivatives, pancreatic islets and exocrine cells, mesenchymal stem cells and primary tumor cells including primary cancer initiating cells. Ad5PTDf35-based adenovirus could be a useful platform for gene delivery and oncolytic virus development. Viral oncolysis alone cannot completely eradicate tumors. Therefore, we further armed the Ad5PTDf35-D24 virus with a secreted form of Helicobacter pylori Neutrophil Activating Protein (HP-NAP). Expression of HP-NAP recruits neutrophils to the site of infection, activates an innate immune response against tumor cells and provokes a Th1-type adaptive immune response. Established tumor on nude mice could be completely eradicated in some cases after treatment with this virus and the survival of mice was significantly prolonged.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2013. 59 p.
Series
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Medicine, ISSN 1651-6206 ; 914
Keyword
Adenovirus, cancer, therapy, neuroblastoma, neuroendocrine, modification, Tat, PTD, cell penetrating peptide, Helicobacter pylori, NAP
National Category
Cell and Molecular Biology Medical Biotechnology (with a focus on Cell Biology (including Stem Cell Biology), Molecular Biology, Microbiology, Biochemistry or Biopharmacy) Biochemistry and Molecular Biology Cancer and Oncology Microbiology in the medical area
Research subject
Biology with specialization in Molecular Biology; Clinical Virology; Medical Virology; Molecular Medicine; Molecular Biotechnology
Identifiers
urn:nbn:se:uu:diva-203662 (URN)978-91-554-8700-3 (ISBN)
Public defence
2013-09-06, Rudbecksalen, The Rudbeck Laboratory C11, Dag Hammarskjölds väg 20, Uppsala, 09:15 (English)
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Available from: 2013-08-16 Created: 2013-07-17 Last updated: 2014-01-07

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