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- _5 value "o this end, we tested the decoy ability of a novel peptide nucleic acid (PNA)-DNA chimera which carries a central DNA strand, containing Sp1-binding sequence, covalently linked to two PNA fragments at both ends (PNA-DNA-PNA, PDP). The chimera was synthesized, annealed with complementary DNA (PDP-DNA), and then tested for its ability to bind Sp1 both in vitro and in living MDA-MB-231 breast cancer cells in the presence of urokinase (uPA). This PDP-DNA decoy molecule efficiently competes for the binding to endogenous Sp1 in nuclear extracts, and upon transfection with liposomal vectors, causes a marked decrease of available Sp1 in both untreated and uPA-treated MDA-MB-231 cells. Accordingly, both uPA-dependent enhancement of uPAR expression and cell migration were strongly reduced in transfected cells." provenance.
- _5 wasQuotedFrom 16143315 provenance.