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  • Title: Aptamers targeting cell surface proteins.
    Author: Takahashi M.
    Journal: Biochimie; 2018 Feb; 145():63-72. PubMed ID: 29198584.
    Abstract:
    High affinity binders targeting specific cell surface proteins are vital for development of basic and applied biosciences. However, despite sustained efforts to generate such binders by chemicals and antibodies, there are still many cell surface proteins that lack high affinity binders. Nucleic acid aptamers have potential as binding molecules for cell surface proteins, because they form distinct structures that have high affinity and specificity for a wide range of targets. Aptamers are isolated from large combinatorial libraries using a unique iterative selection-amplification process known as systematic evolution of ligands by exponential enrichment (SELEX). Among advantages of this method, purified and complex heterogeneous targets, such as bacteria, viruses, and whole-living cells, can be used for selection of aptamers. Moreover, SELEX allows generation of cell-surface-specific aptamers without prior knowledge of expression profiles in target cells. Therefore, the technology has been widely used as a valid and feasible method to generate aptamers binding to cell surface proteins with intact structure. Herein, this review summarizes and updates iconic SELEX technologies that target membrane proteins.
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