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  • Glioblastoma  (4)
  • Cytomegalovirus
  • 1
    In: Neuro-Oncology, 2015, Vol. 17(7), pp.1039-1039
    Description: The question of whether most gliomas are infected with human cytomegalovirus (HCMV) has been under dispute for more than 10 years. We recently reported our failure to detect HCMV in gliomas in Neuro-Oncology.1 Our article was accompanied by 2 related editorials,2,3 one of which boldly criticized our approach.3 Instead of fighting a petty, ivory tower dispute, we would like to lobby for a serious collaborative approach to providing conclusive evidence on the presence of HCMV in glioma (and other cancers). Since we developed the concept of oncomodulation (ie, that HCMV …
    Keywords: Medicine;
    ISSN: 1522-8517
    E-ISSN: 1523-5866
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  • 2
    Language: English
    In: Medical Microbiology and Immunology, 2011, Vol.200(1), pp.1-5
    Description: The question whether human cytomegalovirus may affect cancer diseases has been discussed (very controversially) for decades. There are convinced believers and strict opponents of the idea that HCMV might be able to play a role in the course of cancer diseases. In parallel, the number of published reports on the topic is growing. Recently published and presented (Ranganathan P, Clark P, Kuo JS, Salamat S, Kalejta RF. A Survey of Human Cytomegalovirus Genomic Loci Present in Glioblastoma Multiforme Tissue Samples. 35th Annual International Herpes Workshop, Salt Lake City, 2010) data on HCMV detection in glioblastoma tissues and colocalisation of HCMV proteins with cellular proteins known to be relevant for glioblastoma progression motivated us to recapitulate the current state of evidence.
    Keywords: Cytomegalovirus ; Cancer ; Oncomodulation ; Tumour virus ; Glioblastoma ; Neuroblastoma
    ISSN: 0300-8584
    E-ISSN: 1432-1831
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  • 3
    In: Neuro-Oncology, 2014, Vol. 16(11), pp.1469-1477
    Description: BACKGROUND: Experimental findings have suggested that human cytomegalovirus (HCMV) infection of tumor cells may exert oncomodulatory effects that enhance tumor malignancy. However, controversial findings have been published on the presence of HCMV in malignant tumors. Here, we present the first study that systematically investigates HCMV infection in human nervous system tumors by highly sensitive immunohistochemistry in correlation with the HCMV serostatus of the patients.METHODS: Immunohistochemical and quantitative PCR-based methods to detect different HCMV antigens and genomic HCMV DNA were optimized prior to the investigation of pathological samples. Moreover, the pathological results were matched with the HCMV serostatus of the patients.RESULTS: HCMV immediate-early, late, and pp65 antigens could be detected in single cells from HCMV strain Hi91-infected UKF-NB-4 neuroblastoma cells after 1:1024 dilution with noninfected UKF-NB-4 cells. Genomic HCMV DNA could be detected in copy numbers as low as 430 copies/mL. However, we did not detect HCMV in tumors from a cohort of 123 glioblastoma, medulloblastoma, or neuroblastoma patients. Notably, we detected nonspecifically positive staining in tumor tissues of HCMV seropositive and seronegative glioblastoma patients. The HCMV serostatus of 67 glioblastoma patients matched the general epidemiological prevalence data for Western countries (72% of female and 57% of male glioblastoma patients were HCMV seropositive). Median survival was not significantly different in HCMV seropositive versus seronegative glioblastoma patients.CONCLUSIONS: The prevalence of HCMV-infected tumor cells may be much lower than previously reported based on highly sensitive detection methods.
    Keywords: Cytomegalovirus ; Glioma ; Oncomodulation
    ISSN: 1522-8517
    E-ISSN: 1523-5866
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  • 4
    Language: English
    In: Journal of the National Cancer Institute, 01 April 2009, Vol.101(7), pp.441-3
    Description: Strååt et al. (1) show that human cytomegalovirus (HCMV) infection induces telomerase activation in human malignant glioma cells and fibroblasts. These results reveal a novel mechanism that may be relevant for the potential of HCMV to promote oncogenesis and thus provide another piece of the puzzle that...
    Keywords: Cytomegalovirus -- Metabolism ; Glioma -- Enzymology ; Immediate-Early Proteins -- Metabolism ; Oncogenic Viruses -- Metabolism ; Telomerase -- Metabolism
    ISSN: 00278874
    E-ISSN: 1460-2105
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