申请人:The Board of Trustees of the University of Illinois
公开号:US20210330822A1
公开(公告)日:2021-10-28
Cyclooxygenase-2 (COX-2) over-expression is prominent in inflammatory diseases, neurodegenerative disorders, and cancer. Directly monitoring COX-2 activity within its native environment poses an exciting approach to account for and illuminate the effect of the local environments on protein activity. Herein, we report the development of CoxFluor, the first activity-based sensing approach for monitoring COX-2 within live cells with confocal microscopy and flow cytometry. CoxFluor strategically links a natural substrate with a dye precursor to engage both the cyclooxygenase and peroxidase activities of COX-2. This catalyzes the release of resorufin and the natural product, as supported by molecular dynamics and ensemble docking. CoxFluor enabled the detection of oxygen-dependent changes in COX-2 activity that are independent of protein expression within live macrophage cells.
enzyme of the mevalonate‐independent pathway of the isoprenoid biosynthesis. Using fosmidomycin as a specific inhibitor of Dxr, this enzyme was previously validated as target for the treatment of malaria and bacterial infections. The replacement of the formyl residue of fosmidomycin by spaciousacylresidues yielded inhibitors active in the micromolar range. As predicted by flexible docking, evidence was
Set-Up and Validation of a High Throughput Screening Method for Human Monoacylglycerol Lipase (MAGL) Based on a New Red Fluorescent Probe
作者:Matteo Miceli、Silvana Casati、Roberta Ottria、Simone Di Leo、Ivano Eberini、Luca Palazzolo、Chiara Parravicini、Pierangela Ciuffreda
DOI:10.3390/molecules24122241
日期:——
is crucial to evaluate this modulatory activity. In the current study, we report readily synthesized long-wavelength putative fluorogenic substrates with different acylic side chains to find a new probe for MAGL activity. 7-Hydroxyresorufinyl octanoate proved to be the best substrate thanks to the highest rate of hydrolysis and the best Km and Vmax values. In addition, in silico evaluation of substrates
An Activity‐Based Sensing Approach for the Detection of Cyclooxygenase‐2 in Live Cells
作者:Anuj K. Yadav、Christopher J. Reinhardt、Andres S. Arango、Hannah C. Huff、Liang Dong、Michael G. Malkowski、Aditi Das、Emad Tajkhorshid、Jefferson Chan
DOI:10.1002/anie.201914845
日期:2020.2.17
activity-based sensing approach for monitoring COX-2 within live cells with confocal microscopy and flow cytometry. CoxFluor strategically links a natural substrate with a dye precursor to engage both the cyclooxygenase and peroxidase activities of COX-2. This catalyzes the release of resorufin and the natural product, as supported by molecular dynamics and ensemble docking. CoxFluor enabled the detection of oxygen-dependent