Wednesday 1 September 2010

Complete automation of quantitative polymerase chain reaction assay

Agilent Automation Solutions has released a new application note that demonstrates how its Bravo Automated Liquid Handling Platform provides an effective way to automate setup of a variety of quantitative polymerase chain reaction (qPCR) assays.

qPCR assays have become widespread for detecting and measuring the abundance of specific genetic targets. Technologies developed to detect and monitor PCR product formation and accumulation include TaqMan and Molecular Beacons, which measure accumulation of PCR product-specific fluorescent probes. Another method involves measuring the increase of fluorescent DNA intercalating dyes such as SYBR Green.

The authors describe how qPCR reactions to examine a variety of housekeeping genes from cDNAs derived from different human tissues were set up on the Bravo Automated Liquid Handling Platform and by hand. Data is included demonstrating how dilutions performed by each method showed similar slopes and good linearity and targets amplified by either method also gave similar Ct values. When examining cDNAs from fetal and adult lung, the authors observed differential expression in the B2M whereas GUSB and TBP remained similar.

The application data demonstrates that the Bravo Automated Liquid Handling Platform should be useful to scientists interested in speeding up setup while maintaining reliability when performing qPCR studies.

Agilent Automation Solutions