| Literature DB >> 18974777 |
H J Mauceri1, M A Beckett, H Liang, H G Sutton, S Pitroda, E Galka, E Efimova, T Darga, N N Khodarev, C R King, M C Posner, S Hellman, D W Kufe, R R Weichselbaum.
Abstract
TNFerade is a radioinducible adenoviral vector expressing tumor necrosis factor-alpha (TNF-alpha) (Ad.Egr-TNF) currently in a phase III trial for inoperable pancreatic cancer. We studied B16-F1 melanoma tumors in TNF receptor wild-type (C57BL/6) and deficient (TNFR1,2-/- and TNFR1-/-) mice. Ad.Egr-TNF+IR inhibited tumor growth compared with IR in C57BL/6 but not in receptor-deficient mice. Tumors resistant to TNF-alpha were also sensitive to Ad.Egr-TNF+IR in C57BL/6 mice. Ad.Egr-TNF+IR produced an increase in tumor-associated endothelial cell apoptosis not observed in receptor-deficient animals. Also, B16-F1 tumors in mice with germline deletions of TNFR1,2, TNFR1 or TNF-alpha, or in mice receiving anti-TNF-alpha exhibited radiosensitivity. These results show that tumor-associated endothelium is the principal target for Ad.Egr-TNF radiosensitization and implicate TNF-alpha signaling in tumor radiosensitivity.Entities:
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Year: 2008 PMID: 18974777 PMCID: PMC5705082 DOI: 10.1038/cgt.2008.86
Source DB: PubMed Journal: Cancer Gene Ther ISSN: 0929-1903 Impact factor: 5.987