Ifenprodil is an important negative allosteric modulator of the N-methyl-D-aspartate (NMDA) receptors. We have synthesized caged and photoswitchable derivatives of this small molecule drug. Caged ifenprodil was biologically inert before photolysis, UV irradiation efficiently released the drug allowing selective inhibition of GluN2B-containing NMDA receptors. Azobenzene-modified ifenprodil, on the other hand, is inert in both its trans and cis configurations, although in silico modeling predicted the trans form to be able to bind to the receptor. The disparity in effectiveness between the two compounds reflects, in part, the inherent ability of each method in manipulating the binding properties of drugs. With appropriate structure-activity relationship uncaging enables binary control of effector binding, whereas photoswitching using feely diffusable chromophores shifts the dose-response curve of drug-receptor interaction. Our data suggest that the efficacy of pharmacophores having a confined binding site such as ifenprodil can be controlled more easily by uncaging in comparison to photoswitching.
ChemPhotoChem. 2021 May;5(5):445-454. doi: 10.1002/cptc.202000240 Q23.02024
Photochemical control of drug efficacy - a comparison of uncaging and photoswitching ifenprodil on NMDA receptors
光化学控制药物的效力-光开关和光脱笼伊凡 prodil 对NMDA 受体影响的比较 翻译改进
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DOI: 10.1002/cptc.202000240 PMID: 36540756
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