Abstract:
:We have developed a highly sensitive method for DNA analysis on 3D gel element microarrays, a technique we call multiplex microarray-enhanced PCR (MME-PCR). Two amplification strategies are carried out simultaneously in the reaction chamber: on or within gel elements, and in bulk solution over the gel element array. MME-PCR is initiated by multiple complex primers containing gene-specific, forward and reverse, sequences appended to the 3' end of a universal amplification primer. The complex primer pair is covalently tethered through its 5' end to the polyacryl- amide backbone. In the bulk solution above the gel element array, a single pair of unattached universal primers simultaneously directs pseudo-monoplex PCR of all targets according to normal solution-phase PCR. The presence of a single universal PCR primer pair in solution accelerates amplification within gel elements and eliminates the problem of primer interference that is common to conventional multiplex PCR. We show 10(6)-fold amplification of targeted DNA after 50 cycles with average amplification efficiency 1.34 per cycle, and demonstrate specific on-chip amplification of six genes in Bacillus subtilis. All six genes were detected at 4.5 pg of bacterial genomic DNA (equivalent to 10(3) genomes) in 60 independent amplification reactions performed simultaneously in single reaction chamber.
journal_name
Nucleic Acids Resjournal_title
Nucleic acids researchauthors
Pemov A,Modi H,Chandler DP,Bavykin Sdoi
10.1093/nar/gnh184keywords:
subject
Has Abstractpub_date
2005-01-20 00:00:00pages
e11issue
2eissn
0305-1048issn
1362-4962pii
33/2/e11journal_volume
33pub_type
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