The present invention relates to the field of pharmacogenomics and in particular to detecting the presence or absence of hypermethylated DNA. The detection of CpG methylation in marker DNA is useful for the diagnosis of cancers and the invention provides improved methods for this purpose. These improved methods allow in particular for a more sensitive detection of methylated marker DNA with high backgrounds of unmethylated marker DNA.

The present invention relates to the field of pharmacogenomics and in particular to detecting the presence or absence of hypermethylated DNA. The detection of CpG methylation in marker DNA is useful for the diagnosis of cancers and the invention provides improved methods for this purpose. These improved methods allow in particular for a more sensitive detection of methylated marker DNA with high backgrounds of unmethylated marker DNA.

The method includes obtaining a sample including a target nucleic acid, contacting the sample with a quantification primer, adding a quantity of blocking primer to the sample, and repeating the contacting and adding steps until the total quantity of blocking primer present in the sample meets or exceeds the amount of target present in the sample. Each repetition utilizes a quantification primer having a different unique identifying feature assigned to sequentially increasing quantification levels, and the quantity of blocking primer added at each repetition establishes numerical spacing between the quantification levels. The method further includes identifying the unique identifying feature present in any bound quantification primers that remain in the sample, where the presence of a unique identifying feature assigned to a particular quantification level indicates the approximate amount of the target present in the sample.

The method includes obtaining a sample including a target nucleic acid, contacting the sample with a quantification primer, adding a quantity of blocking primer to the sample, and repeating the contacting and adding steps until the total quantity of blocking primer present in the sample meets or exceeds the amount of target present in the sample. Each repetition utilizes a quantification primer having a different unique identifying feature assigned to sequentially increasing quantification levels, and the quantity of blocking primer added at each repetition establishes numerical spacing between the quantification levels. The method further includes identifying the unique identifying feature present in any bound quantification primers that remain in the sample, where the presence of a unique identifying feature assigned to a particular quantification level indicates the approximate amount of the target present in the sample.

The present invention relates to a method of detecting and quantifying biomolecules using nucleic acid polymerase activity controlled by the target molecule, and more particularly to a method for detecting or quantifying biomolecules, which can detect and quantify nucleic acids, proteins, small-molecular substances, physiologically active substances (enzymatic activities), etc., with high sensitivity, based on the change in DNA polymerase activity caused by specific binding of a specific nucleic acid that forms a complex with a DNA aptamer prepared so as to comprise a single-stranded DNA that specifically recognizes the specific nucleic acid. The present invention can provide a method for diagnosing biomolecules, which can detect and quantify target nucleic acids, target proteins, target small-molecular substances, target enzyme activities and the like in a label-free and sensitive manner by controlling polymerase activity through target molecule-induced conformational change of a DNA aptamer.

The present invention relates to a method of detecting and quantifying biomolecules using nucleic acid polymerase activity controlled by the target molecule, and more particularly to a method for detecting or quantifying biomolecules, which can detect and quantify nucleic acids, proteins, small-molecular substances, physiologically active substances (enzymatic activities), etc., with high sensitivity, based on the change in DNA polymerase activity caused by specific binding of a specific nucleic acid that forms a complex with a DNA aptamer prepared so as to comprise a single-stranded DNA that specifically recognizes the specific nucleic acid. The present invention can provide a method for diagnosing biomolecules, which can detect and quantify target nucleic acids, target proteins, target small-molecular substances, target enzyme activities and the like in a label-free and sensitive manner by controlling polymerase activity through target molecule-induced conformational change of a DNA aptamer.

The present invention relates to a PCR-based systems and methods for enrichment of minority alleles and mutations.

The present invention relates to a PCR-based systems and methods for enrichment of minority alleles and mutations.

The present disclosure provides, in some aspects, nucleic acid-based molecular tools that enable the recording of molecular structure and soluble signals as well as the programmed assembly of molecular structures.

The present disclosure provides, in some aspects, nucleic acid-based molecular tools that enable the recording of molecular structure and soluble signals as well as the programmed assembly of molecular structures.