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- W2896810005 abstract "BackgroundSalvia miltiorrhiza is used extensively to treat cardiovascular diseases. SAA is a major bioactive component in Salvia miltiorrhiza and mediates myocardial ischemia (MI). However, the industrial production of SAA is limited due to low yields. In addition, the direct targets of SAA are unknown. Here we explore cardioprotective mechanisms and targets of SAA in the cardiovascular system.MethodsTransgelin and actin were identified as targets of SAA using a chemical biology method and were validated by Biacore analysis, microscale thermophoresis and single-molecule imaging. Studies of transgelin (−/−) knockout mice further verify the target. Cardioprotective mechanisms and targets of SAA were studied in cultured vascular smooth muscle cells and transgenic mice.FindingsIn WT mice, SAA targeted transgelin and had a protective effect on myocardium but did not have the same protective effect on transgelin (−/−) mice. SAA stabilizes the transgelin-actin complex, modulates the reorganization of the actin cytoskeleton, facilitates F-actin bundling, further enhances the contractility and blood flows of coronary arteries, and improves outcomes of myocardial ischemia. Based on the target, a more active SAA derivative offering myocardial protection, SAA-30, was obtained.InterpretationWe report on the direct targets of SAA and mechanisms of myocardial ischemia treatment. We also find that transgelin may act as a novel therapeutic target of myocardial ischemia. Furthermore, a more effective derivative of SAA provides the basis for further clinical translational research." @default.
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- W2896810005 date "2018-11-01" @default.
- W2896810005 modified "2023-10-14" @default.
- W2896810005 title "Salvianolic acid A targeting the transgelin-actin complex to enhance vasoconstriction" @default.
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- W2896810005 doi "https://doi.org/10.1016/j.ebiom.2018.10.041" @default.
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