Picoinjection enables digital detection of RNA with droplet rt-PCR.

Picoinjection enables digital detection of RNA with droplet rt-PCR.
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DOI:
10.1371/journal.pone.0062961
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发表时间:
2013
期刊:
影响因子:
3.7
通讯作者:
Abate AR
Abate AR
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Eastburn DJ;Sciambi A;Abate AR

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以顺序方式将试剂添加到液滴的能力对于微流体在生物学中的许多应用是必要的。实现这一点的一个重要方法是皮可注射,这是一种使用电场将试剂注射到水滴中的技术。虽然皮可注射已被证明可以精确地将试剂添加到液滴中,但其与生物反应的相容性尚未得到彻底证明。在这里,我们研究了picoinjection与数字RT-PCR Taqman检测的兼容性,这些检测是将核酸、酶和其他常见生物试剂结合在一起的反应。我们发现皮可注射与该测定相容,并且能够以与不包含皮可注射的工作流程相当的速率检测RNA转录物。我们还发现,皮可注射液滴之间的材料转移可以忽略不计,液滴忠实地保留其区室化。
The ability to add reagents to drops in a sequential fashion is necessary for numerous applications of microfluidics in biology. An important method for accomplishing this is picoinjection, a technique in which reagents are injected into aqueous drops using an electric field. While picoinjection has been shown to allow the precise addition of reagents to drops, its compatibility with biological reactions is yet to be thoroughly demonstrated. Here, we investigate the compatibility of picoinjection with digital RT-PCR Taqman assays, reactions that incorporate nucleic acids, enzymes, and other common biological reagents. We find that picoinjection is compatible with this assay and enables the detection of RNA transcripts at rates comparable to workflows not incorporating picoinjection. We also find that picoinjection results in negligible transfer of material between drops and that the drops faithfully retain their compartmentalization.
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