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Methods To Identify Aptamers against Cell Surface Biomarkers
CEA, DSV, I²BM, Service Hospitalier Frédéric Joliot (SHFJ), 4 place du général Leclerc, 91401 Orsay, France
INSERM U1023, 4 place du général Leclerc, 91401 Orsay, France
Université Paris Sud, 4 place du général Leclerc, 91401 Orsay, France
Department of Molecular Biology, Aarhus University, Gustav Wieds Vej 10C, 8000 Aarhus C, Denmark
* Author to whom correspondence should be addressed.
Received: 1 August 2011; in revised form: 2 September 2011 / Accepted: 9 September 2011 / Published: 20 September 2011
Abstract: Aptamers are nucleic acid-based ligands identified through a process of molecular evolution named SELEX (Systematic Evolution of Ligands by Exponential enrichment). During the last 10-15 years, numerous aptamers have been developed specifically against targets present on or associated with the surface of human cells or infectious pathogens such as viruses, bacteria, fungi or parasites. Several of the aptamers have been described as potent probes, rivalling antibodies, for use in flow cytometry or microscopy. Some have also been used as drugs by inhibiting or activating functions of their targets in a manner similar to neutralizing or agonistic antibodies. Additionally, it is straightforward to conjugate aptamers to other agents without losing their affinity and they have successfully been used in vitro and in vivo to deliver drugs, siRNA, nanoparticles or contrast agents to target cells. Hence, aptamers identified against cell surface biomarkers represent a promising class of ligands. This review presents the different strategies of SELEX that have been developed to identify aptamers for cell surface-associated proteins as well as some of the methods that are used to study their binding on living cells.
Keywords: aptamers; SELEX; cell surface biomarkers; methods
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Cite This Article
MDPI and ACS Style
Cibiel, A.; Dupont, D.M.; Ducongé, F. Methods To Identify Aptamers against Cell Surface Biomarkers. Pharmaceuticals 2011, 4, 1216-1235.
Cibiel A, Dupont DM, Ducongé F. Methods To Identify Aptamers against Cell Surface Biomarkers. Pharmaceuticals. 2011; 4(9):1216-1235.
Cibiel, Agnes; Dupont, Daniel Miotto; Ducongé, Frédéric. 2011. "Methods To Identify Aptamers against Cell Surface Biomarkers." Pharmaceuticals 4, no. 9: 1216-1235.