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Journal Article
Research Support, Non-U.S. Gov't
Inhibition of platelet function using liposomal nanoparticles blocks tumor metastasis.
Theranostics 2017
Extensive evidence has shown that platelets support tumor metastatic progression by inducing epithelial-mesenchymal transition of cancer cells and by shielding circulating tumor cells from immune-mediated elimination. Therefore, blocking platelet function represents a potential new avenue for therapy focused on eliminating metastasis. Here we show that liposomal nanoparticles bearing the tumor-homing pentapeptide CREKA (Cys-Arg-Glu-Lys-Ala) can deliver a platelet inhibitor, ticagrelor, into tumor tissues to specifically inhibit tumor-associated platelets. The drug-loaded nanoparticles (CREKA-Lipo-T) efficiently blocked the platelet-induced acquisition of an invasive phenotype by tumor cells and inhibited platelet-tumor cell interaction in vitro . Intravenously administered CREKA-Lipo-T effectively targeted tumors within 24 h, and inhibited tumor metastasis without overt side effects. Thus, the CREKA-Lipo formulation provides a simple strategy for the efficient delivery of anti-metastatic drugs and shows considerable promise as a platform for novel cancer therapeutics.
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