Provided herein are kits and devices which may be used for improved polynucleotide detection.

The reaction-medicated amplification methods and applications include a new type of ligase. The general amplification and detection of the downstream with the ligase reaction includes 3 linking probes. It achieves the effect of eliminating nonspecific signal interference by respectively filling the detection tag sequence, upstream primer tag sequence, and downstream primer combination tag sequence into 3 different linking probes. Wherein the linking probe containing detection tag sequence forms a cystic structure and the specific hybridization sequences on both sides of the cystic structure form a “hybridization community” when being hybrid to the target sequences. Being hybrid closely at the adjacent positions to the target sequences, 3 linking probes finally form a complete probe chain containing 3 “tag” sequences with the effect of ligase. This technique achieves the goals of reducing reaction background, enhancing signal-noise-ration and avoiding false positive.

The reaction-medicated amplification methods and applications include a new type of ligase. The general amplification and detection of the downstream with the ligase reaction includes 3 linking probes. It achieves the effect of eliminating nonspecific signal interference by respectively filling the detection tag sequence, upstream primer tag sequence, and downstream primer combination tag sequence into 3 different linking probes. Wherein the linking probe containing detection tag sequence forms a cystic structure and the specific hybridization sequences on both sides of the cystic structure form a “hybridization community” when being hybrid to the target sequences. Being hybrid closely at the adjacent positions to the target sequences, 3 linking probes finally form a complete probe chain containing 3 “tag” sequences with the effect of ligase. This technique achieves the goals of reducing reaction background, enhancing signal-noise-ration and avoiding false positive.

Sensitive and specific detection of nucleic acids can be achieved using a chemical ligation-based template assisted rapid assay (TARA-L) with simple chemical reactions between probes and without the need for enzymes. Probes are designed to form a ligation product when they anneal to adjacent portions of a target nucleic acid. The ligation products can be detected, such as in immunochromatographic assays. The methods allow for the fast, efficient analysis of biological samples for the presence of nucleic acids and can be used, for example, in point of care settings.

Sensitive and specific detection of nucleic acids can be achieved using a chemical ligation-based template assisted rapid assay (TARA-L) with simple chemical reactions between probes and without the need for enzymes. Probes are designed to form a ligation product when they anneal to adjacent portions of a target nucleic acid. The ligation products can be detected, such as in immunochromatographic assays. The methods allow for the fast, efficient analysis of biological samples for the presence of nucleic acids and can be used, for example, in point of care settings.

The present invention provides assay systems and methods for detection of copy number variation at one or more loci and polymorphism detection at one or more loci in a mixed sample from an individual.

The present invention provides assay systems and methods for detection of copy number variation at one or more loci and polymorphism detection at one or more loci in a mixed sample from an individual.

The present invention provides assay systems and methods for detection of copy number variation at one or more loci and polymorphism detection at one or more loci in a mixed sample from an individual.

Disclosed are compositions, methods and kits for determining the presence, absence, amount, copy number, or other characteristics of one or more polynucleotide sequences in two or more samples and use thereof in genotyping, evaluation of copy number variation, expression analysis, determination of splice variants and fusion genes, and other genetic analyses.

Disclosed are compositions, methods and kits for determining the presence, absence, amount, copy number, or other characteristics of one or more polynucleotide sequences in two or more samples and use thereof in genotyping, evaluation of copy number variation, expression analysis, determination of splice variants and fusion genes, and other genetic analyses.