Digital PCR provides sensitive and absolute calibration for high throughput sequencing

Details Digital PCR provides sensitive and absolute calibration for high throughput sequencing Digital PCR provides sensitive and absolute calibration for high throughput sequencing

2008-08-16

arxiv.org/abs/0808.2232v1

Biology

Quantitative Biology

Quantitative Methods

Scientific paper

Several of the next generation sequencers are limited in their sample preparation process by the need to make an absolute measurement of the number of template molecules in the library to be sequenced. As currently practiced, the practical effects of this requirement compromise sequencing performance, both by requiring large amounts of sample DNA and by requiring extra sequencing runs to be performed. We used digital PCR to quantitate sequencing libraries, and demonstrated its sensitivity and robustness by preparing and sequencing libraries from subnanogram amounts of bacterial and human DNA on the 454 and Solexa sequencing platforms. This assay allows absolute quantitation and eliminates uncertainties associated with the construction and application of standard curves. The digital PCR platform consumes subfemptogram amounts of the sequencing library and gives highly accurate results, allowing the optimal DNA concentration to be used in setting up sequencing runs without costly and time-consuming titration techniques. This approach also reduces the input sample requirement more than 1000-fold: from micrograms of DNA to less than a nanogram.

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