Long RT-PCR amplification of the entire coding sequence of the polycystic kidney disease 1 (PKD1) gene

Characterization of mutations of the PKD1 gene has been limited by the fact that three-fourths of this gene at its 5' end is homologous to sequences of at least three other genes on the same chromosome. We have therefore developed a method of long reverse transcription PCR for selective amplifi...

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Veröffentlicht in:BioTechniques 1999, Vol.26 (1), p.126-132
Hauptverfasser: THONGNOPPAKHUN, W, WILAIRAT, P, VAREESANGTHIP, K, YENCHITSOMANUS, P.-T
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Sprache:eng
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Zusammenfassung:Characterization of mutations of the PKD1 gene has been limited by the fact that three-fourths of this gene at its 5' end is homologous to sequences of at least three other genes on the same chromosome. We have therefore developed a method of long reverse transcription PCR for selective amplification of the entire coding sequence of the PKD1 gene from its mRNA. A PCR primer specific to the sequence in the 3' unique region of the PKD1 gene was synthesized for use coupled with a primer binding to sequence in the homologous region at a distance of about 13.6 kb apart. The commercial availability of RNase H-free reverse transcriptase for long cDNA synthesis and of an enzyme mixture containing Taq and Pfu DNA polymerases for long-range PCR have made this development possible. The long PCR product was proven to be derived from PKD1-mRNA. The results clearly indicated that the long PCR product contained the coding sequence derived from PKD1-mRNA. To our knowledge, this is the first report of a procedure that can reproducibly isolate full-length PKD1 coding sequence from its mRNA transcript, which will prove useful for screening and characterization of mutations in the PKD1 gene.
ISSN:0736-6205
1940-9818
DOI:10.2144/99261rr01