Cyclophilin is a ubiquitous peptidyl prolyl cis/trans isomerase that plays critical roles in many biological processes. A number of cyclophilin inhibitors have been designed based on the structure of the immunosuppressant cyclosporin A. To discover inhibitors that have other structures, the authors established the high-throughput screening (HTS) method using FDSS6000 real-time fluorescence detector. The inhibitors identified with this HTS showed significant correlation with direct interaction as measured by surface plasmon resonance. This high-throughput assay system is a powerful tool for the discovery of peptidylprolyl isomerase inhibitors. (Journal of Biomolecular Screening 2009:419-424)
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