Guldberg P, Grønbak K, Aggerholm A, Platz A, thor Straten P, Ahrenkiel V, Hokland P, Zeuthen J. Detection of mutations in GC-rich DNA by bisulphite denaturing gradient gel electrophoresis.
Nucleic Acids Res 1998;
26:1548-9. [PMID:
9490806 PMCID:
PMC147432 DOI:
10.1093/nar/26.6.1548]
[Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Denaturing gradient gel electrophoresis (DGGE) in combination with PCR and 'GC-clamping' has proven highly efficient as a method for detection of DNA sequence differences. Due to strand dissociation phenomena, however, its use has been limited to the analysis of sequences with a relatively low content of GC pairs. This paper describes how treatment of template DNA with sodium bisulphite drastically lowers the melting temperature of very GC-rich sequences and renders them amenable to DGGE analysis. We demonstrate the use of bisulphite DGGE for rapid and efficient detection of mutations in the p16(INK4/CDKN2) tumour suppressor gene.
Collapse