首页>
外国专利>
SELECTIVE AMPLIFICATION OF MINORITY MUTATIONS USING PRIMER BLOCKING HIGH-AFFINITY OLIGONUCLEOTIDES
SELECTIVE AMPLIFICATION OF MINORITY MUTATIONS USING PRIMER BLOCKING HIGH-AFFINITY OLIGONUCLEOTIDES
展开▼
机译:使用Primer Blocking高亲和力寡核苷酸选择性扩增少数突变
展开▼
页面导航
摘要
著录项
相似文献
摘要
In certain embodiments this invention pertains to methods of detecting and/or quantifying rare mutant nucleic acids in populations of nucleic acids in which the wild-type nucleic acids are in substantially greater abundance than the rare mutants. In various embodiments the methods utilize short high affinity oligonucleotides targeted to the wild type rather than the minority or mutant sequence. Rather than directly detecting mutant DNA, these probes block detection of wild type DNA. These “blocker” probes can be used in combination with longer “detection” probes or PCR primers to amplify and/or identify the minority mutation in, e.g., clinical specimens. The combination of short high affinity blocker probes and longer, lower affinity detection probes eliminates the single base specificity/complexity tradeoff in the design of nucleic acid probes.
展开▼