Abstract : Protein microarray is a promising technology that should combine rapidity and easy use with high throughput and versatility. This article describes a method in which an electrocopolymerization process is employed to graft biological molecules on to a chip so that surface plasmon resonance imaging may be used to detect molecular interactions. Copolymerization of pyrrole-modified protein and pyrrole is an efficient grafting process which immobilizes molecules at defined positions on a gold surface. Surface plasmon resonance imaging is an optical technique that allows real-time simultaneous detection of molecular interactions on a large number of spots without labeling. This method was successfully used to analyze antibody-antigen interactions. This illustrates its high specificity and good sensitivity and demonstrates its suitability for biological studies.
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Ludivine Grosjean, Boutheina Cherif, Emilie Mercey, André Roget, Yves Levy, et al.. A polypyrrole protein microarray for antibody-antigen interaction studies using a label-free detection process.. Analytical Biochemistry, Elsevier Masson, 2005, 347 (2), pp.193-200. ⟨10.1016/j.ab.2005.09.033⟩. ⟨inserm-00144353⟩