MicroRNA-sensitive oncolytic measles virus for chemovirotherapy of pancreatic cancer
Advanced pancreatic cancer is characterized by few treatment options and poor outcomes. Oncolytic virotherapy and chemotherapy involve complementary pharmacodynamics and could synergize to improve therapeutic efficacy. Likewise, multimodality treatment may cause additional toxicity, and new agents h...
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| Hauptverfasser: | , , , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
25 June 2021
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| In: |
Molecular therapy. Oncolytics
Year: 2021, Jahrgang: 21, Pages: 340-355 |
| ISSN: | 2372-7705 |
| DOI: | 10.1016/j.omto.2021.04.015 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.omto.2021.04.015 Verlag, lizenzpflichtig, Volltext: https://www.sciencedirect.com/science/article/pii/S2372770521000656 
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| Verfasserangaben: | Hans Martin Singh, Mathias Felix Leber, Sascha Bossow, Christine E. Engeland, Jan Dessila, Christian Grossardt, Karim Zaoui, John C. Bell, Dirk Jäger, Christof von Kalle and Guy Ungerechts |
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| 520 | |a Advanced pancreatic cancer is characterized by few treatment options and poor outcomes. Oncolytic virotherapy and chemotherapy involve complementary pharmacodynamics and could synergize to improve therapeutic efficacy. Likewise, multimodality treatment may cause additional toxicity, and new agents have to be safe. Balancing both aims, we generated an oncolytic measles virus for 5-fluorouracil-based chemovirotherapy of pancreatic cancer with enhanced tumor specificity through microRNA-regulated vector tropism. The resulting vector encodes a bacterial prodrug convertase, cytosine deaminase-uracil phosphoribosyl transferase, and carries synthetic miR-148a target sites in the viral F gene. Combination of the armed and targeted virus with 5-fluorocytosine, a prodrug of 5-fluorouracil, resulted in cytotoxicity toward both infected and bystander pancreatic cancer cells. In pancreatic cancer xenografts, a single intratumoral injection of the virus induced robust in vivo expression of prodrug convertase. Based on intratumoral transgene expression kinetics, we devised a chemovirotherapy regimen to assess treatment efficacy. Concerted multimodality treatment with intratumoral virus and systemic prodrug administration delayed tumor growth and prolonged survival of xenograft-bearing mice. Our results demonstrate that 5-fluorouracil-based chemovirotherapy with microRNA-sensitive measles virus is an effective strategy against pancreatic cancer at a favorable therapeutic index that warrants future clinical translation. | ||
| 650 | 4 | |a chemovirotherapy | |
| 650 | 4 | |a cytosine deaminase | |
| 650 | 4 | |a fluorouracil | |
| 650 | 4 | |a measles virus | |
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| 650 | 4 | |a oncolytic viruses | |
| 650 | 4 | |a pancreatic cancer | |
| 650 | 4 | |a prodrugs | |
| 650 | 4 | |a virotherapy | |
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