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1 November 2005 High-Throughput Molecular Testing of Ticks Using a Liquid-Handling Robot
John R. Moriarity, Amanda D. Loftis, Gregory A. Dasch
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Abstract

To meet the need for high-throughput sample testing, DNA extraction kits based on the 96-well plate format have been developed for use with blood and tissue samples. These methods have not been applied to DNA extractions from ticks. To meet this need, we developed a high-throughput method for DNA extraction and polymerase chain reaction (PCR) testing of tick samples. A liquid-handling robot was used to extract DNA in a 96-well binding column plate with vacuum manifold. The quantity, purity, and quality of DNA recovered from Ixodes scapularis Say, 1821 nymphs with this method were reproducible and comparable with existing manual DNA extraction techniques. The DNA yield from pools of five nymphal ticks averaged 0.432 ± 0.04 μg (95% CI). The robot also prepared real-time PCR reactions in 96-well plates, directly from the extracted DNA. A modification of the existing P20 tool resulted in accurate pipetting of 1- to 2-μl volumes with a reproducibility of ±0.038 μl when dispensing 1.0 μl. By using this process, 96 samples can be extracted and tested while reducing human labor to ≈30 min.

John R. Moriarity, Amanda D. Loftis, and Gregory A. Dasch "High-Throughput Molecular Testing of Ticks Using a Liquid-Handling Robot," Journal of Medical Entomology 42(6), 1063-1067, (1 November 2005). https://doi.org/10.1603/0022-2585(2005)042[1063:HMTOTU]2.0.CO;2
Received: 4 May 2005; Accepted: 30 July 2005; Published: 1 November 2005
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KEYWORDS
automated
DNA extraction
polymerase chain reaction
robotic
ticks
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