Anti-angiogenesis activities of novel peptide complexes: mitochondria-disruptive 9mer peptides conjugated with the integrin alpha V beta 3-homing cyclic RGD motif.
2012
RGD peptides are popular drug delivery tools in treating integrin αVβ3-expressing malignant tumors and tumor vasculature cells. We investigated the specific delivery and pharmacological potential of enantiomeric mitochondria-disruptive peptides (RLYLRIGRR-NH2, RLRLRIGRR-NH2, ALYLAIRRR-NH2, and RLLLRIGRR-NH2) after conjugation with an integrin αVβ3-homing peptide, cyclic pentameric RGD peptide. The cyclic RGD-conjugated mitochondria-disruptive peptides exhibited specific internalization, apoptosis induction, and cytotoxicity against integrin αVβ3-high-expressing human umbilical vein endothelial cells. Our findings indicate that these novel peptide complexes might prove good anti-angiogenesis reagents.
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