Enzymatic Preparation of 2′–5′,3′–5′-Cyclic Dinucleotides, Their Binding Properties to Stimulator of Interferon Genes Adaptor Protein, and Structure/Activity Correlations
作者:Barbora Novotná、Lenka Vaneková、Martin Zavřel、Miloš Buděšínský、Milan Dejmek、Miroslav Smola、Ondrej Gutten、Zahra Aliakbar Tehrani、Markéta Pimková Polidarová、Andrea Brázdová、Radek Liboska、Ivan Štěpánek、Zdeněk Vavřina、Tomáš Jandušík、Radim Nencka、Lubomír Rulíšek、Evžen Bouřa、Jiří Brynda、Ondřej Páv、Gabriel Birkuš
DOI:10.1021/acs.jmedchem.9b01062
日期:2019.12.12
(NFκB) signaling cascades. In this work, we describe an enzymatic preparation of 2′–5′,3′–5′-cyclic dinucleotides (2′3′CDNs) with use of cyclic GMP–AMP synthases (cGAS) from human, mouse, and chicken. We profile substrate specificity of these enzymes by employing a small library of nucleotide-5′-triphosphate (NTP) analogues and use them to prepare 33 2′3′CDNs. We also determine affinity of these CDNs to
环状二核苷酸是环状GMP-AMP合酶(cGAS)-干扰素基因刺激(STING)途径的第二信使,在识别肿瘤细胞和病毒或细菌感染中起着重要作用。它们与STING衔接蛋白结合并通过TANK结合激酶1(TBK1)/干扰素调节因子3(IRF3)和核因子-κB(IκB)激酶(IKK)/核因子-κB(NFκB)抑制剂触发细胞因子的表达信号级联。在这项工作中,我们描述了使用人,小鼠和鸡的环状GMP-AMP合成酶(cGAS)酶法制备2'-5',3'-5'-环二核苷酸(2'3'CDNs)的方法。我们通过使用一个小的核苷酸5'-三磷酸(NTP)类似物文库来分析这些酶的底物特异性,并使用它们来制备33个2'3'CDN。我们还确定了这些CDN对基于细胞和生化分析的五种不同STING单倍型的亲和力,并描述了它们对所有STING单倍型的最佳活性所需的特性。接下来,我们研究它们对人外周血单核细胞(PBMC)诱导的细胞因子