About: Tumor-homing Peptide iRGD     Goto   Sponge   NotDistinct   Permalink

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AttributesValues
rdf:type
rdfs:label
  • Tumor-homing Peptide iRGD
rdfs:subClassOf
Semantic_Type
  • Pharmacologic Substance
Preferred_Name
  • Tumor-homing Peptide iRGD
NCI_META_CUI
  • CL438336
PDQ_Open_Trial_Search_ID
  • 743105
PDQ_Closed_Trial_Search_ID
  • 743105
FULL_SYN
  • Tumor-homing Peptide iRGDPTNCI
  • iRGDSYNCI
DEFINITION
  • A 9 amino acid-based cyclic, tumor specific homing, arginine-glycine-aspartic acid (RGD)-based peptide (CRGDKRGPDC), with tumor penetrating activity. The iRGD contains the RGD motif as well as the C-terminal end binding (CendR) motif that increases internalization. Upon administration, the RGD motif of the iRGD peptide is able to specifically target tumors by binding to alphavbeta3/alphavbeta5 integrins on tumor endothelium. In turn, iRGD is cleaved by specific tumor proteases, which exposes the positively charged CendR motif. This motif binds to neuropilin-1 (NRP-1), a receptor overexpressed on certain tumor cells. This increases vascular permeability of tumor blood vessels and promotes tumor penetration. Compared to other RGD peptides, this agent is able to both improve delivery and increase the accumulation of co-administered or conjugated chemotherapeutic agents in the tumor.NCI
code
  • C103858
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