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Viruses 2016, 8(5), 138; doi:10.3390/v8050138

Pediatric and Adult High-Grade Glioma Stem Cell Culture Models Are Permissive to Lytic Infection with Parvovirus H-1

1
Research Program Infection, Inflammation and Cancer, Division of Tumor Virology, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 242, 69120 Heidelberg, Germany
2
Division of Pediatric Neurooncology, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 580, 69120 Heidelberg, Germany
3
Division of Biostatistics, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 580, 69120 Heidelberg, Germany
4
Division of Experimental Neurosurgery, Department of Neurosurgery, University Hospital, Im Neuenheimer Feld 400, 69120 Heidelberg, Germany
5
Clinical Cooperation Unit Pediatric Oncology, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120 Heidelberg, Germany
6
Department of Pediatric Hematology, Oncology and Immunology, Center for Pediatric and Adolescent Medicine, University Hospital, Im Neuenheimer Feld 430, 69120 Heidelberg, Germany
*
Author to whom correspondence should be addressed.
Academic Editors: Martine L.M. Lamfers and E. Antonio Chiocca
Received: 4 October 2015 / Accepted: 8 April 2016 / Published: 19 May 2016
(This article belongs to the Special Issue Oncolytic Viruses)
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Abstract

Combining virus-induced cytotoxic and immunotherapeutic effects, oncolytic virotherapy represents a promising therapeutic approach for high-grade glioma (HGG). A clinical trial has recently provided evidence for the clinical safety of the oncolytic parvovirus H-1 (H-1PV) in adult glioblastoma relapse patients. The present study assesses the efficacy of H-1PV in eliminating HGG initiating cells. H-1PV was able to enter and to transduce all HGG neurosphere culture models (n = 6), including cultures derived from adult glioblastoma, pediatric glioblastoma, and diffuse intrinsic pontine glioma. Cytotoxic effects induced by the virus have been observed in all HGG neurospheres at half maximal inhibitory concentration (IC50) doses of input virus between 1 and 10 plaque forming units per cell. H-1PV infection at this dose range was able to prevent tumorigenicity of NCH421k glioblastoma multiforme (GBM) “stem-like” cells in NOD/SCID mice. Interestingly NCH421R, an isogenic subclone with equal capacity of xenograft formation, but resistant to H-1PV infection could be isolated from the parental NCH421k culture. To reveal changes in gene expression associated with H-1PV resistance we performed a comparative gene expression analysis in these subclones. Several dysregulated genes encoding receptor proteins, endocytosis factors or regulators innate antiviral responses were identified and represent intriguing candidates for to further study molecular mechanisms of H-1PV resistance. View Full-Text
Keywords: oncolytic virus; parvovirus H-1; H-1PV; DIPG; pediatric glioblastoma; tumor initiating cells; glioma stem-like cells; high-grade glioma oncolytic virus; parvovirus H-1; H-1PV; DIPG; pediatric glioblastoma; tumor initiating cells; glioma stem-like cells; high-grade glioma
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Josupeit, R.; Bender, S.; Kern, S.; Leuchs, B.; Hielscher, T.; Herold-Mende, C.; Schlehofer, J.R.; Dinsart, C.; Witt, O.; Rommelaere, J.; Lacroix, J. Pediatric and Adult High-Grade Glioma Stem Cell Culture Models Are Permissive to Lytic Infection with Parvovirus H-1. Viruses 2016, 8, 138.

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