Background/Purpose: Pathologic angiogenesis in tumors is a potential target for novel therapies. Vascular endothelial growth factor (VEGF) is an angiogenic promoter present in a wide variety of human tumors. VEGF is expressed as 4 isoforms; one of these, VEGF165, predominates in human tumors. The authors hypothesized that antagonism of VEGF165 by a specific aptamer would block tumor growth in an experimental model of Wilms tumor. Methods: VEGF isoform expression in clinical (n = 2) and experimental tumors were evaluated by reverse transcription polymerase chain reaction (RT-PCR). Tumors were induced in NCR nude mice (n = 32) by intrarenal injection of 106 cultured Wilms tumor cells. At 1 week, aptamer (n = 16) or vehicle (n = 16) treatment was started and continued daily for 5 weeks. Results: At 6 weeks tumors weighed 84% less in treated versus control animals (0.69 v 4.41 g; P < .028), without observed adverse effects and similar to suppression previously reported using nonisoform-specific anti-VEGF antibody (94% to 96%). Conclusions: Anti-VEGF165 aptamer effectively suppressed primary tumor growth in experimental animals with no observed adverse effects. Development of highly specific antiangiogenic therapies may be of particular benefit to pediatric patients. Copyright © 2001 by W.B. Saunders Company.
CITATION STYLE
Huang, J., Moore, J., Soffer, S., Kim, E., Rowe, D., Manley, C. A., … Kandel, J. (2001). Highly specific antiangiogenic therapy is effective in suppressing growth of experimental Wilms tumors. In Journal of Pediatric Surgery (Vol. 36, pp. 357–361). W.B. Saunders. https://doi.org/10.1053/jpsu.2001.20716
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