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- W3095349133 abstract "Specific interactions between ligands and receptors on cell surface play an important role in the cell biological process. Nucleic acid aptamers as commonly used ligands enable specific recognition and tight binding to membrane protein receptors for modulation of cell fate. Therefore, molecular probes with aptamers can be applied for cancer diagnosis and targeted therapy by targeting overexpression membrane proteins of cancer cells. However, because of their fast degradation and rapid glomerulus clearance in vivo, the applications of aptamers in physiological conditions remain challenged. Inspired by natural multivalent interactions, many approaches have been developed to construct multivalent aptamers to improve the performance of aptamers in complex matrices with higher binding affinity, more stability, and longer circulation time. In this review, we first introduce the aptamer generation from purified protein-based SELEX and whole cell-based SELEX for targeting the cell surface. We then highlight the approaches to fabricate multivalent aptamers and discuss their properties. By integrating different materials (including inorganic nanomaterials, diacyllipid, polymeric nanoparticles, and DNA nanostructures) as scaffolds with an interface modification technique, we have summarized four kinds of multivalent aptamers. After that, representative applications in biosensing and targeted therapy are illustrated to show the elevated performance of multivalent aptamers. In addition, we analyze the challenges and opportunities for the clinical practices of multivalent aptamers." @default.
- W3095349133 created "2020-11-09" @default.
- W3095349133 creator A5025163305 @default.
- W3095349133 creator A5029525185 @default.
- W3095349133 creator A5057209439 @default.
- W3095349133 creator A5067949841 @default.
- W3095349133 creator A5078265090 @default.
- W3095349133 date "2020-11-04" @default.
- W3095349133 modified "2023-10-16" @default.
- W3095349133 title "Rationally Designed Multivalent Aptamers Targeting Cell Surface for Biomedical Applications" @default.
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