Development of <i>Pseudomonas aeruginosa</i>
Lectin LecA Inhibitor by using Bivalent Galactosides Supported on Polyproline Peptide Scaffolds
作者:Shao-Feng Huang、Cin-Hao Lin、Yu-Tsung Lai、Chia-Lung Tsai、Ting-Jen R. Cheng、Sheng-Kai Wang
DOI:10.1002/asia.201701724
日期:2018.3.16
polyproline peptides to create a scaffold that controls the galactoside positions to fit their binding sites on LecA. With a modular scaffold design, both the galactoside ligands and the inter‐ligand distance can be altered conveniently. We prepared scaffolds with spacings of 9, 18, 27, and 36 Å for ligand conjugation and found that glycopeptides with galactosides ligands three helical turns (27 Å) apart
LecA是一种来自铜绿假单胞菌的半乳糖结合四聚体凝集素,参与感染和生物膜形成。铜绿假单胞菌的紧急耐药性LecA已成为治疗此类感染的有希望的药物靶标。为了开发LecA抑制剂,我们利用了聚脯氨酸肽的独特螺旋结构来创建一个支架,该支架控制半乳糖苷的位置以适合其在LecA上的结合位点。通过模块化支架设计,可以方便地更改半乳糖苷配体和配体间的距离。我们准备了间距为9、18、27和36的支架进行配体缀合,发现具有半乳糖苷配体的糖肽相距三个螺旋圈(27Å)最适合LecA。此外,我们在所选支架(27Å)上测试了不同的半乳糖衍生物,以改善与LecA的结合亲和力。结果验证了新的多价支架设计,并为LecA抑制剂的开发提供了有用的信息。