Linear-after-the-exponential (LATE)-PCR: an advanced method of asymmetric PCR and its uses in quantitative real-time analysis.

Abstract:

:Conventional asymmetric PCR is inefficient and difficult to optimize because limiting the concentration of one primer lowers its melting temperature below the reaction annealing temperature. Linear-After-The-Exponential (LATE)-PCR describes a new paradigm for primer design that renders assays as efficient as symmetric PCR assays, regardless of primer ratio. LATE-PCR generates single-stranded products with predictable kinetics for many cycles beyond the exponential phase. LATE-PCR also introduces new probe design criteria that uncouple hybridization probe detection from primer annealing and extension, increase probe reliability, improve allele discrimination, and increase signal strength by 80-250% relative to symmetric PCR. These improvements in PCR are particularly useful for real-time quantitative analysis of target numbers in small samples. LATE-PCR is adaptable to high throughput applications in fields such as clinical diagnostics, biodefense, forensics, and DNA sequencing. We showcase LATE-PCR via amplification of the cystic fibrosis CFDelta508 allele and the Tay-Sachs disease TSD 1278 allele from single heterozygous cells.

authors

Sanchez JA,Pierce KE,Rice JE,Wangh LJ

doi

10.1073/pnas.0305476101

keywords:

subject

Has Abstract

pub_date

2004-02-17 00:00:00

pages

1933-8

issue

7

eissn

0027-8424

issn

1091-6490

pii

0305476101

journal_volume

101

pub_type

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