Diastereomeric Selective Effects for Growth Inhibition of Synthesized Mini Parallel Double-Stranded Peptides on Escherichia coli and Staphylococcus aureus
作者:Shigeki Kobayashi、Nahomi Atuchi、Hiroki Kobayashi、Akiko Shiraishi、Hajime Hamashima、Akira Tanaka
DOI:10.1248/cpb.52.204
日期:——
The synthesis of a series of mini double-stranded peptides containing chiral–x-Phe–y-Phe–peptide residues and the diastereomeric selective effects of these compounds on Escherichia coli NIHJ JC-2 and Staphylococcus aureus FDA 209P growth are described. In the case of bis(y-Phe–x-Phe)-N,N-ethane-1,2-diamine, bis(y-Phe–x-Phe)-N,N-buthane-1,4-diamine, bis(y-Phe–x-Phe)-N,N-hexane-1,6-diamine, and bis(y-Phe–x-Phe)-N,N-dodecane-1,12-diamine, etc., the four configurations, (L-, L-), (D-, L-), (L-, D-) and (D-, D-), where the symbols x- and y- represent optical isomers with L- and D- forms, were used to investigate the relationship between chirality and antibacterial activity. The level of activity increased in the following order: (L-, L-)<(D-, D-)<(L-, D-)<(D-, L-). The data show that (D-, L-) chilarity is more potent than (L-, L-) chilarity. Then, these results suggest that the –y-Phe–x-Phe Phe–sequence in the double-stranded peptide has anti-bacterial activity and the chirality of –y-Phe–x-Phe affects the anti-bacterial activity. Our results show that the uptake by penetration through the membrane of bis(y-Phe–x-Phe)2-Spacers is a first step in the expression of anti-bacterial activity. This study provides new insights in the chirality-antibacterial activity relationships of a series of mini double-stranded peptides.
描述了一系列含有手性-x-Phe-y-Phe-肽残基的迷你双链肽的合成,以及这些化合物对大肠杆菌NIHJ JC-2和金黄色葡萄球菌FDA 209P生长的非对映选择性效应。以双(y-Phe-x-Phe)-N,N-乙烷-1,2-二胺、双(y-Phe-x-Phe)-N,N-丁烷-1,4-二胺、双(y-Phe-x-Phe)-N,N-己烷-1,6-二胺和双(y-Phe-x-Phe)-N,N-十二烷-1,12-二胺等为例,使用了四种构型(L-,L-)、(D-,L-)、(L-,D-)和(D-,D-)(其中符号x-和y-表示具有L-和D-形式的光学异构体),以研究手性与抗菌活性之间的关系。活性水平按以下顺序增加:(L-,L-)<(D-,D-)<(L-,D-)<(D-,L-)。数据显示,(D-,L-)手性比(L-,L-)手性更有效。这些结果表明,双链肽中的-y-Phe-x-Phe Phe-序列具有抗菌活性,而-y-Phe-x-Phe的手性影响抗菌活性。我们的结果表明,通过膜渗透摄取双(y-Phe-x-Phe)2-间隔物是表达抗菌活性的第一步。本研究为一系列迷你双链肽的手性-抗菌活性关系提供了新的见解。