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Environmental Sciences

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Environmental Sciences

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Environmental Microbiology

RT-PCR for Detecting RNA in Samples

Description

RT-PCR is used to detect RNA in environmental samples by first converting RNA into DNA. It follows the same temperature-cycling steps as conventional PCR, but it begins with ribonucleic acid (RNA) instead of deoxyribonucleic acid (DNA). The RNA is turned into complementary DNA, or cDNA, so DNA-based tools can be used to stud...

Transcript

逆转录聚合酶链式反应(RT-PCR)可用于检测环境中的RNA病毒和微生物基因表达。

与从人类到细菌等以DNA作为遗传物质的细胞生物不同,一些病毒的基因组由RNA构成,其中包括许多致病性病毒,如流感病毒、埃博拉病毒和HIV。尽管某些病毒可通过观察其在细胞培养中感染细胞后产生的致病表型来检测,但大多数病毒尚无基于培养的表征方法。逆转录聚合酶链式反应(RT-PCR)可用于高灵敏度地检测环境中这些病毒的存在。

同时,具有DNA基因组的生物体通过将DNA基因组“转录”为信使RNA(即“m”RNA),来表达其DNA基因组中编码的遗传信息,随后mRNA可被“翻译”成蛋白质,以在细胞中发挥酶促或结构功能。由于微生物可通过开启或关闭不同的遗传通路来响应并适应环境变化,因此可利用逆...

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