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Elsevier, Analytica Chimica Acta, 2(685), p. 153-161

DOI: 10.1016/j.aca.2010.11.025

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Screening of fibrillogenesis inhibitors of β2-microglobulin: Integrated strategies by mass spectrometry capillary electrophoresis and in silico simulations

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This paper is available in a repository.

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Abstract

The challenging search of ligands for the amyloidogenic protein β(2)-microglobulin led us to set up an integrated strategy that combines analytical techniques and molecular modelling. Using a chemical library composed of 90 sulphonated molecules and a novel MS screening approach, we initially single out a few new binders. To check for anti-amyloid activity, the best hit obtained was thoroughly studied by docking analysis, affinity and refolding experiments by capillary electrophoresis and in vitro fibrillogenesis Thioflavin T test. Correlative analysis of the overall results obtained from the MS screening led to develop an equation able to identify the key factors of the affinity for β(2)-microglobulin and to predict the affinity for novel derivatives. The proposed equation was then used for a virtual screening of a large compound database. Studies on the new hit thus retrieved confirm the predictive potential of both the equation on affinity and of docking analysis on anti-amyloid activity.