Optical surface plasmon resonance biosensors in molecular fishing

Ivanov A.S.1 , Medvedev A.E.2

1. Institute of Biomedical Chemistry, Moscow, Russia; Engelhardt Institute of Molecular Biology of RAS, Moscow, Russia
2. Institute of Biomedical Chemistry, Moscow, Russia
Section: Review
DOI: 10.18097/PBMC20156102231      PubMed Id: 25978389
Year: 2015  Volume: 61  Issue: 2  Pages: 231-238
An optical biosensor employing surface plasmon resonance is a highly efficient instrument applicable for direct real time registration of molecular interactions without additional use of any labels or coupled processes. As an independent approach it is especially effective in analysis of various ligand receptor interactions. SPR-biosensors are used for validation of studies on intermolecular interactions in complex biological systems (affinity profiling of various groups of proteins, etc.). Recently, potential application of the SPR-biosensor for molecular fishing (direct affinity binding of target molecules from complex biological mixtures on the optical biosensor surface followed by their elution for identification by LC-MS/MS) has been demonstrated. Using SPR-biosensors in such studies it is possible to solve the following tasks: (a) SPR-based selection of immobilization conditions required for the most effective affinity separation of a particular biological sample; (b) SPR-based molecular fishing for subsequent protein identification by mass spectrometry; (c) SPR-based validation of the interaction of identified proteins with immobilized ligand. This review considers practical application of the SPR technology in the context of recent studies performed in the Institute of Biomedical Chemistry on molecular fishing of real biological objects.
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Keywords: optical surface plasmon resonance based biosensor, molecular fishing, amyloid-binding proteins, cytochrome b5, isatin binding proteins

Ivanov, A. S., Medvedev, A. E. (2015). Optical surface plasmon resonance biosensors in molecular fishing. Biomeditsinskaya Khimiya, 61(2), 231-238.
This paper is also available as the English translation: 10.1134/S1990750816010078
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