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Tumor targeting ligands holds the promise of enhanced antitumor efficacy.Heptapeptide LA7R,identified by screening a mutated phage, was shown to bind specifically to neuropilin-1 (NRP-1) receptor and VEGFR2 receptor that were over-expressed on U87 glioma cells, glioma vasculogenic mimicry and tumor neovasculature.Therefore, LA7R conjugated liposomes transporting doxorubicin were supposed to be "systemic targeted drug delivery".