Abstract
metastases in the lung and liver, respectively, after intravenous injection in Tie2-hPTX3 mice. Also, the orthotopic growth of syngeneic pancreatic and mammary tumor cells was significantly reduced after injection in Tie2hPTX3 mice and led to increased survival compared to control mice. Finally, double transgenic TRAMP/Tie2-hPTX3 mice showed a significant delay of multistage prostate tumor onset and progression in respect to TRAMP mice. Our findings demonstrate for the first time that in vivo delivery of PTX3 exerts a dramatic impact on tumor growth, vascularization and metastasis. These results have set the basis for the identification of a low molecular weight PTX3-derived molecule that recapitulates the FGF-trap activities of PTX3 and exhibits promising therapeutic potential for FGF-dependent tumors.
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