Human Neutrophil Elastase Phosphonic Inhibitors with Improved Potency of Action
摘要:
Herein, we present the synthesis and the measurement of the inhibitory activity of novel peptidyl derivatives of alpha-aminoalkylphosphonate diaryl esters as human neutrophil elastase inhibitors. Their selectivity against other serine proteases, including porcine pancreatic elastase, chymotrypsin, and trypsin, was also demonstrated. We also describe the preparation of single peptide diastereomers. The most active and selective compound developed possessed a k(inact)/K-1 of 2353000 M-1 s(-1), which is the most potent irreversible peptidyl inhibitor of human neutrophil elastase reported to date. The peptidyl inhibitors were demonstrated to be stable in PBS buffer and human plasma, as were their complexes with HNE.
人白细胞弹性蛋白酶在多种炎性疾病中起关键作用,并且是生物医学研究的重要课题。肽膦酸酯的化学型用于设计新的基于活性的人白细胞弹性蛋白酶探针。其结构结合了膦酸酯弹头具有足够的肽部分和BODIPY荧光团与一个可点击的ethinylphenyl部分内消旋位置。探针6由铜催化的炔-叠氮化物1,3-偶极环加成组装而成。它被表征为一种活性的定点弹性蛋白酶抑制剂,具有88400 M –1 s –1的二级失活速率常数。适合度6通过凝胶内荧光分析证实了其作为人白细胞弹性蛋白酶的荧光探针。针对一组相关蛋白酶的标记实验和抑制数据强调了探针对靶向白细胞弹性蛋白酶的选择性。