【摘 要】
：
Inflammatory bowel disease(IBD)is a chronic intestinal disease with painful clinical manifes-tations and high risks of cancerization.With no curative therapy for IBD at present,the development of effective therapeutics is highly advocated.Drug delivery sy
【机 构】
：
State Key Laboratory of Quality Research in Chinese Medicine,Institute of Chinese Medical Sciences,U
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Inflammatory bowel disease(IBD)is a chronic intestinal disease with painful clinical manifes-tations and high risks of cancerization.With no curative therapy for IBD at present,the development of effective therapeutics is highly advocated.Drug delivery systems have been extensively studied to transmit therapeutics to inflamed colon sites through the enhanced permeability and retention(EPR)effect caused by the inflammation.However,the drug still could not achieve effective concentration value that merely utilized on EPR effect and display better therapeutic efficacy in the inflamed region because of nontargeted drug release.Substantial researches have shown that some specific receptors and cell adhesion molecules highly expresses on the surface of colonic endothelial and/or immune cells when IBD occurs,ligand-modified drug delivery systems targeting such receptors and cell adhesion molecules can specifically deliver drug into inflamed sites and obtain great curative effects.This review introduces the overexpressed receptors and cell adhesion molecules in inflamed colon sites and retrospects the drug delivery systems functionalized by related ligands.Finally,challenges and future directions in this field are presented to advance the development of the receptor-mediated targeted drug delivery systems for the therapy of IBD.
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