Solid-phase synthesis of 5′-triphosphate 2′-5′-oligoadenylates analogs with 3′-O-biolabile groups and their evaluation as RNase L activators and antiviral drugs
作者:Yann Thillier、Sarah K. Stevens、Christabel Moy、Joshua Taylor、Jean-Jacques Vasseur、Leonid Beigelman、Françoise Debart
DOI:10.1016/j.bmc.2013.06.008
日期:2013.9
uptake, increase its in vivo stability and release the parent 2–5A drug in an intact form offer an alternative approach to therapeutic use of 2–5A. Here we have synthesized the trimeric and tetrameric 2–5A species bearing hydrophobic and enzymolabile pivaloyloxymethyl groups at 3′-positions and a triphosphate at the 5′-end. Both analogs were able to activate RNase L and the production of the trimer 2–5A
5'-三磷酸2'-5'-寡腺苷酸(2–5A)是2–5A系统中的核心角色,它是对传染原存在的一种固有免疫途径。被2-5A激活的细胞内核糖核酸酶RNase L裂解病毒和细胞RNA,导致细胞凋亡。2-5A在治疗应用中的主要局限性是半衰期短和细胞吸收差。用生物不稳定性和亲脂性基团修饰2-5A,以促进其吸收,增加其体内稳定性并以完整形式释放母体2-5A药物,是治疗2-5A的另一种方法。在这里,我们合成了三聚体和四聚体2-5A物种,它们在3'-位带有疏水和酶促新戊酰氧基甲基基团,在5'-端带有三磷酸盐。两种类似物均能激活RNase L,并且将三聚体2–5A(最活跃)的产量放大至毫克级,以用于被流感病毒或呼吸道合胞病毒感染的细胞的抗病毒评估。三聚体类似物表现出一些显着的抗病毒活性。