Synthetic peptides with the arginine-glycine-aspartate (RGD) motif have been used widely as inhibitors of integrin-ligand interactions to study cell growth, adhesion, migration and differentiation. We designed cyclic-RGD peptide (Tpa-RGDWPC-, cRGD) which could cause cell death in MCF-7 cell line. In order to understand the mechanism involved in cRGD-induced apoptosis, we used microarray, real-time quantitative PCR (Q-PCR) and bioinformatics to study the effects of cRGD on breast cancer cell line MCF-7.
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