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已发表论文

包埋恩度 (Endostar) 的 GX1 共轭聚 (乳酸) 纳米粒用于改善体内抗大肠癌治疗

 

Authors Du Y, Zhang Q, Jing L, Liang X, Chi C, Li Y, Yang X, Dai Z, Tian J

Published Date May 2015 Volume 2015:10 Pages 3791—3802

DOI http://dx.doi.org/10.2147/IJN.S82029

Received 1 February 2015, Accepted 30 March 2015, Published 28 May 2015

Abstract: Tumor angiogenesis plays a key role in tumor growth and metastasis; thus, targeting tumor-associated angiogenesis is an important goal in cancer therapy. However, the efficient delivery of drugs to tumors remains a key issue in antiangiogenesis therapy. GX1, a peptide identified by phage-display technology, is a novel tumor vasculature endothelium-specific ligand and possesses great potential as a targeted vector and antiangiogenic agent in the diagnosis and treatment of human cancers. Endostar, a novel recombinant human endostatin, has been shown to inhibit tumor angiogenesis. In this study, we developed a theranostic agent composed of GX1-conjugated poly(lactic acid) nanoparticles encapsulating Endostar (GPENs) and labeled with the near-infrared dye IRDye 800CW to improve colorectal tumor targeting and treatment efficacy in vivo. The in vivo fluorescence molecular imaging data showed that GPENs (IRDye 800CW) more specifically targeted tumors than free IRDye 800CW in colorectal tumor-bearing mice. Moreover, the antitumor efficacy was evaluated by bioluminescence imaging and immunohistology, revealing that GPENs possessed improved antitumor efficacy on subcutaneous colorectal xenografts compared to other treatment groups. Thus, our study showed that GPENs, a novel GX1 peptide guided form of nanoscale Endostar, can be used as a theranostic agent to facilitate more efficient targeted therapy and enable real-time monitoring of therapeutic efficacy in vivo.
Keywords: GX1 peptide, Endostar, colorectal cancer, angiogenesis, IRDye 800CW, molecular imaging






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