肽
体内
癌症研究
精氨酸
细胞毒性T细胞
癌细胞
化学
体外
生物化学
生物
分子生物学
癌症
氨基酸
遗传学
生物技术
作者
Sabine Zitzmann,Volker Ehemann,Manfred Schwab
出处
期刊:PubMed
日期:2002-09-15
卷期号:62 (18): 5139-43
被引量:72
摘要
Targeting tumor cells or tumor vasculature by peptides is a promising strategy for delivering cytotoxic drugs for cancer therapy. The identification of efficient targeting peptides depends on the availability of informative methods for determining cellular binding specificities. Here, we have used fluorescence-activated cell-sorting (FACS) analysis in combination with an isopentane freezing method to show targeted binding of the Arg-Gly-Asp (RGD)-4C-peptide labeled with FITC, not only to endothelial cells but also to tumor cells in human breast cancer xenografts grown in nude mice. Nontumorous cells showed only background binding. This study suggests, that the RGD-4C-peptide can target tumor endothelial cells as well as tumor cells. Consequently, it should be possible to design a combination therapy approach against both targets.
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