Abstract:
Provided herein are methods and compositions for performing PCR with primers with blocked 3′-ends that are unblocked when these primers anneal to the template. The multiplexed PCR can be used as real-time qPCR, for end-point detection or as enrichment method for next generation sequencing (NGS). Also described herein are methods and compositions to improve sensitivity of mutation-specific PCR when targeting closely-spaced mutations.
Abstract:
The present invention is directed to compositions and methods for nucleic acid identification and detection. Compositions and methods of the present invention include extracting and fragmenting target nucleic acids from a sample, using the fragmented target nucleic acids to produce target nucleic acid templates and subjecting those target nucleic acid templates to amplification methods to form nucleic acid nanoballs. The invention also includes methods of detecting and identifying sequences using various sequencing applications, including sequencing by ligation methods.
Abstract:
The present invention provides a novel technology that involves improved primer design. These primer pairs have a wide range of applications and provide high sensitivity and specificity.
Abstract:
Provided is a method for rapidly and easily detecting a mutated nucleic acid, which is contained in a small amount in a nucleic acid sample together with wild-type nucleic acids, with high specificity and high sensitivity. In the method of the present invention, amplification of a detection region comprising a target site by a nucleic acid amplification method is inhibited, by the steps of allowing a nucleic acid having a target site to coexist with a clamp probe comprising a photo-crosslinking nucleic acid and having a sequence complementary to the target site, and photo-crosslinking the nucleic acid having the target site with the clamp probe by photo-irradiation.
Abstract:
This invention relates to the use of genetic probes for detection of the presence of the SCCmec cassette in Staphylococcus aureus. In one aspect, the invention allows specific detection and identification of methicillin-resistant S. aureus (MRSA) in a clinical sample without interference from the presence of other non-S. aureus methicillin-resistant staphylococci. In another aspect, the invention allows specific detection and identification of methicillin-resistant coagulase negative staphylococci (MRCNS) originating from a clinical sample without interference from the presence of methicillin-resistant S. aureus.
Abstract:
The present invention is directed to compositions and methods for nucleic acid identification and detection. Compositions and methods of the present invention include extracting and fragmenting target nucleic acids from a sample, using the fragmented target nucleic acids to produce target nucleic acid templates and subjecting those target nucleic acid templates to amplification methods to form nucleic acid nanoballs. The invention also includes methods of detecting and identifying sequences using various sequencing applications, including sequencing by ligation methods.
Abstract:
A probe set comprising a detection probe and a counter probe, wherein the detection probe comprises an oligonucleotide which comprises a nucleotide sequence containing the mutation site on the target nucleic acid and also containing a nucleotide of interest in the mutation site or a nucleotide sequence complementary to the aforementioned nucleotide sequence, has a fluorescent substance added to the 5′-terminal and a quenching substance added to the 3′-terminal, and has, introduced therein, such a modification that the melting temperature of the probe becomes 3° C. or more higher than that of the counter probe, and wherein the counter probe comprises an oligonucleotide which comprises a nucleotide sequence containing a mutation site and also containing a nucleotide that is different from the nucleotide of interest in the mutation site or a nucleotide sequence complementary to the aforementioned nucleotide sequence.
Abstract:
The invention provides highly sensitive, specific and efficient quantitative real-time PCR compositions, methods and assay kits to detect at least one IFN subtype and/or IFN subtype allotypic variants. Primer/probe sets complementary to the coding sequence of an IFN subtype of interest avoid spurious detection of degraded mRNA and enhances the correlation between the IFN subtype that is measured by the assays of the invention and the protein that is actually expressed. The invention also provides methods for designing primers and methods of using the compositions and assay kits. The compositions, kits, and methods of the invention may be used, for example, to monitor vaccine efficacy, autoimmune disease, chronic infections, or tumor therapy.
Abstract:
This invention relates to methods for molecular detection, particularly to methods utilizing target-specific molecular probes. In exemplary embodiments, target-specific molecular probes include single-stranded deoxyribonucleic acid (DNA) or ribonucleic acid (RNA) aptamers. In general, the molecular probe may bind with relatively high specificity to a given target. In one aspect, a method for molecular detection comprises a molecular probe paired to a reporter molecule wherein the molecular probe impairs the amplification of the reporter molecule in the absence of the target molecule.