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. 2011 Feb 17:1:189-200.
doi: 10.7150/thno/v01p0189.

Integrin targeted delivery of chemotherapeutics

Kai Chen  1 , Xiaoyuan Chen
Affiliations

Integrin targeted delivery of chemotherapeutics

Kai Chen et al. Theranostics. .

Abstract

Targeted delivery of chemotherapeutics is defined in the sense, that is, to maximize the therapeutic index of a chemotherapeutic agent by strictly localizing its pharmacological activity to the site or tissue of action. Integrins are a family of heterodimeric transmembrane glycoproteins involved in a wide range of cell-to-extracellular matrix (ECM) and cell-to-cell interactions. As cell surface receptors, integrins readily interact with extracellular ligands and play a vital role in angiogenesis, leukocytes function and tumor development, which sets up integrins as an excellent target for chemotherapy treatment. The peptide ligands containing the arginine-glycine-aspartic acid (RGD), which displays a strong binding affinity and selectivity to integrins, particularly to integrin αvβ3, have been developed to conjugate with various conventional chemotherapeutic agents, such as small molecules, peptides and proteins, and nanoparticle-carried drugs for integtrin targeted therapeutic studies. This review highlights the recent advances in integrin targeted delivery of chemotherapeutic agents with emphasis on target of integrin αvβ3, and describes the considerations for the design of the diverse RGD peptide-chemotherapeutics conjugates and their major applications.

Keywords: Bioconjugation.; Chemotherapeutics; Integrin; RGD; Targeted delivery.

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Conflict of interest statement

Conflict of Interest: The authors have declared that no conflict of interest exists.

Figures

Fig 1
Fig 1
Chemical Structures of c(RGDyK), c(RGDfK), [c(RGDyK)2], RGD4C, and RGD10. Due to high binding affinity for integrin αvβ3, these RGD-containing peptides are commonly used for integrin αvβ3 targeted delivery of chemotherapeutics.
See this image and copyright information in PMC

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