Synthesis and biological activity of cyclolinopeptide A analogues modified with γ 4 -bis(homo-phenylalanine)
作者:Karol Jędrzejczak、Paweł Hrynczyszyn、Małgorzata Szczesio、Jolanta Artym、Tomasz Jastrząbek、Maja Kocięba、Marek Główka、Krzysztof Huben、Iwona Kochanowska、Michał Zimecki、Janusz Zabrocki、Stefan Jankowski、Beata Kolesińska
DOI:10.1016/j.bmc.2017.05.063
日期:2017.8
γ-peptides with a dominance of an antiparallel arrangement. As carbonyl groups may be engaged in the interactions with plausible receptors through hydrogen bonds, a similar biological activity of the modified peptides was expected. Our biological studies showed that certain cyclic, but not the corresponding linear peptides, lowered the viability of peripheral blood mononuclear cells (PBMC) at 100 μg/mL concentration
环亚麻肽A(CLA),由亚麻种子衍生的免疫抑制九肽,用改性小号或- [R -γ 4中的位置3或4双(同型苯丙氨酸),或两者3个4这些修饰改变的新的类似物的灵活性和分子内氢键的分布。类似物11 C(临1 -Pro 2 -Phe 3 - S- γ 4 - hhPhe 4 -Leu 5 -Ile 6 -Ile 7 -Leu 8 -Val 9),13 C(临1 -Pro 2-小号-γ 4 - hhPhe 3 - [R -γ 4 - hhPhe 4 -Leu 5 -Ile 6 -Ile 7 -Leu 8 -Val 9)和15 C(临1 -Pro 2 - [R - γ 4 - hhPhe 3 - Phe 4 -Leu 5 -Ile 6 -Ile 7 -Leu 8 -Val 9)以稳定的顺式/反式混合物存在Pro-Pro肽键的异构体。对两个羰基(相邻的γ-氨基酸)的晶体状态的相对空间取向的比较显示出与α-肽的构象相似性。-CH