Mutation Scanning for the Clinical Laboratory: DHPLC
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This chapter describes the Transgenomic WAVE® DNA Fragment Analysis System with DNA Sep® Technology, as used in our molecular
genetics diagnostic laboratories for the detection of unknown mutations. Four software packages are currently available: WAVEmaker
3.4, 4, 4.1, and most recently, Navigator. Because versions 4 and 4.1 are similar, version 4 is presented here. Denaturing
high-performance liquid chromatography (DHPLC), also known as TMHA (temperature-modulated heteroduplex analysis) provides
a rapid, automated scanning method for mutations, whether known or unknown. Mutations are visualized as a characteristic pattern
of peaks corresponding to the mixture of heteroduplexes and homoduplexes formed when wild-type and mutant DNA fragments are
hybridized (1; Fig. 1).
Fig. 1.
Formation of a 1∶1 mixture of heteroduplexes and homoduplexes through hybridization.
Affiliation(s): (3) Wessex Regional Genetics Laboratory, Salisbury Health Care NHS Trust, Salisbury District Hospital, Salisbury, Wiltshire, UK
(4) Institute of Medical Genetics, University Hospital of Wales, Cardiff, UK
(4) Institute of Medical Genetics, University Hospital of Wales, Cardiff, UK
Book Title: Molecular Diagnosis of Genetic Diseases
Series: Methods in Molecular Medicine | Volume: 92 | Pub. Date: Oct-20-2003 | Page Range: 45-66 | DOI: 10.1385/1-59259-432-8:45
Subject: Genetics/Genomics
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