In vitro production and multiplex quantification of 2',3'-cyclic phosphate-containing 5'-tRNA half molecules.

In vitro production and multiplex quantification of 2',3'-cyclic phosphate-containing 5'-tRNA half molecules.
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含2 ',3'-环磷酸酯的5 '-tRNA半分子的体外产生和多重定量。

DOI:
10.1016/j.ymeth.2021.04.024
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发表时间:
2022-07
期刊:
Methods (San Diego, Calif.)
影响因子:
--
通讯作者:
Kirino Y
Kirino Y
中科院分区:
其他
文献类型:
--
作者:
Kawamura T;Shigematsu M;Kirino Y

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RNA被许多核糖核酸酶切割产生在其3′-末端含有2′,3 ′-环磷酸(cP)的RNA分子,并且许多含cP的RNA(cP-RNA)在细胞和组织中表达为功能分子。5′-tRNA半分子是一类典型的cP-RNA,在多种生物学过程中发挥着重要作用。我们在这里展示了体外生产含cP的5′-tRNA半分子,其能够制备足够用于功能分析的大量合成cP-RNA。此外,我们还报道了一种多重TaqMan RT-qPCR方法,该方法可以同时定量多个含cP的5′-tRNA半种。该方法使我们能够使用有限量的样品(如人血浆样品)有效地定量5 '-tRNA半体,揭示了结核分枝杆菌感染患者中5'-tRNA半体水平的急剧增强,约为1000倍。这些体外生产和多重定量方法可应用于任何cP-RNA,它们提供了具有成本效益的内部技术,以加速5′-tRNA半体和其他cP-RNA的表达和功能表征。
RNA cleavages by many ribonucleases generate RNA molecules that contain a 2′,3′-cyclic phosphate (cP) at their 3′-termini, and many cP-containing RNAs (cP-RNAs) are expressed as functional molecules in cells and tissues. 5′-tRNA half molecules are representative examples of functional cP-RNAs, playing important roles in various biological processes. We here show in vitro production of cP-containing 5′-tRNA half molecules that is able to prepare abundant synthetic cP-RNAs enough for functional analyses. Furthermore, we report a multiplex TaqMan RT-qPCR method which can simultaneously quantify multiple cP-containing 5′-tRNA half species. The method enabled us to efficiently quantify 5′-tRNA halves using samples with limited amounts, such as human plasma samples, revealing drastic enhancement of 5′-tRNA half levels at approximately 1000-fold in patients infected with Mycobacterium tuberculosis. These in vitro production and multiplex quantification methods can be applied to any cP-RNAs, and they provide cost-effective, in-house techniques to accelerate expressional and functional characterizations of 5′-tRNA halves and other cP-RNAs.
DOI: 10.1073/pnas.1714397115
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