Rapid identification of homologous recombinants and determination of gene copy number with reference/query pyrosequencing (RQPS).
Manipulating the mouse genome is a widespread technology with important applications in many biological fields ranging from cancer research to developmental biology. Likewise, correlations between copy number variations (CNVs) and human diseases are emerging. We have developed the reference-query pyrosequencing (RQPS) method, which is based on quantitative pyrosequencing and uniquely designed probes containing single nucleotide variations (SNVs), to offer a simple and affordable genotyping solution capable of identifying homologous recombinants independent of the homology arm size, determining the micro-amplification status of endogenous human loci, and quantifying virus/transgene copy number in experimental or commercial species. In addition, we also present a simple pyrosequencing-based protocol that could be used for the enrichment of homologous recombinant embryonic stem (ES) cells.
Department of Developmental Biology, Washington University School of Medicine, St. Louis, Missouri 63110, USA.
Zhenyi
Z
Liu
Anna C
AC
Obenauf
Michael R
MR
Speicher
Raphael
R
Kopan
D000465:Algorithms; D000818:Animals; D053595:Embryonic Stem Cells / Q000378:metabolism; D018628:Gene Dosage; D005787:Gene Frequency; D020022:Genetic Predisposition to Disease / Q000235:genetics; D023281:Genomics / Q000379:methods*; D005838:Genotype; D006801:Humans; D051379:Mice; D008810:Mice, Inbred C57BL; D008815:Mice, Inbred Strains; D008822:Mice, Transgenic; D010735:Phosphoglycerate Kinase / Q000235:genetics; D017354:Point Mutation; D020641:Polymorphism, Single Nucleotide; D051883:Receptor, Notch2 / Q000235:genetics; D011995:Recombination, Genetic; D015203:Reproducibility of Results; D017422:Sequence Analysis, DNA / Q000379:methods*; D019076:Transgenes / Q000235:genetics
D051883:Receptor, Notch2; C528165:Pgk1 protein, mouse; D010735:Phosphoglycerate Kinase