Abstract
HER2 receptor, for its involvement in tumorigenesis, has been largely studied as topic in cancer research. In particular, the employment of trastuzumab (Herceptin), a humanized anti-HER2 antibody, showed several clinical benefits in the therapy against the breast cancer. Moreover, for its accessible extracellular domain, this receptor is considered an ideal target to deliver anticancer drugs for the receptormediated anticancer therapy. By now, monoclonal antibody and its fragments, affibody, and some peptides have been employed as targeting agents in order to deliver various drugs to HER2 positive tumor cells. In particular, the ability to perform a fast and reliable screening of a large number of peptide molecules would make possible the selection of highly specific compounds to the receptor target. In this regard, the availability of preparing a simplified synthetic model which is a good mimetic of the receptor target and can be used in a reliable screening method of ligands would be of a strategic importance for the development of selective HER2-targeting peptide molecules. Herein, we illustrate the importance of HER2-targeted anticancer therapies. We also report on a synthetic and effective mimetic of the receptor, which revealed to be a useful tool for the selection of specific HER2 ligands.
Keywords: Drug delivery systems, HER2 receptor, Screening methods, Selective ligand, Synthetic receptor fragment, Targeted cancer therapy.
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