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Genetic studies have identified Drosophila Naked Cuticle (Nkd) as an antagonist of the canonical Wnt/beta-catenin signaling pathway, but its mechanism of action remains obscure [Zeng, W., Wharton, K. A., Jr., Mack, J. A., Wang, K., Gadbaw, M., et al. (2000) Nature (London) 403, 789--795]. Here we have cloned a cDNA encoding a mammalian homolog of Drosophila(More)
Peptides are emerging as pharmaceutical agents in cancer therapy. The peptide, TLSGAFELSRDK (TLS) is a targeting ligand that can specifically triggers cellular uptake by binding to SKOV3 cells. Cell surface proteins and the C-terminal basic residues of the TLS are required for effective cell penetration, and the uptake process is energy-dependent. It(More)
The cyclic peptide Cys-Asn-Gly-Arg-Cys (CNGRC) has previously been demonstrated as a tumor vasculature-homing peptide, which can specifically bind to CD13/aminopeptidase N in vivo. However, the effect of the peptide (CNGRC) binding to tumor cells in vitro has not yet been reported. In this study, CNGRC and an irrelevant linear control peptide (SVSVG) were(More)
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