Abstract:
Methods and reagents for detection and analysis of nucleic acids are provided. Certain methods involves an encoding amplification in which a target sequence is associated with probe-binding sequences and optionally with indexing sequences, (2) an optional distribution step in which the product of the encoding amplification is split into multiple aliquots, and (3) a decoding and detection step in which the presence, absence, quantity, or relative amount of the target sequence in the aliquots is determined. The detection step makes use of a multifunctional "self-digesting" molecular probe comprising a primer polynucleotide and a probe oligonucleotide, linked in a 5'-5' orientation.
Abstract:
The present invention provides amplification-based methods for detection of genotype, mutations, and/or aneuploidy. These methods have broad applicability, but are particularly well-suited to detecting and quantifying target nucleic acids in free fetal DNA present in a maternal bodily fluid sample.
Abstract:
The present invention provides amplification-based methods for detection of genotype, mutations, and/or aneuploidy. These methods have broad applicability, but are particularly well-suited to detecting and quantifying target nucleic acids in free fetal DNA present in a maternal bodily fluid sample.
Abstract:
Methods of detecting a candidate genetic anomaly such as a candidate duplication in a genome are disclosed. The methods comprise quantifying fluorogenic assays for alleles of a genetic locus from a plurality of individual genomes, identifying ranges of fluorescent intensities indicative of individual genomes homozygous for a first allele, homozygous for a second allele, or heterozygous for both alleles, and identifying individual genomes in which the fluorescence intensities are outside the range of intensities indicative of homozygosity or heterozygosity for the genetic locus.
Abstract:
The present invention is directed to methods, reagents, and kits for detecting the presence or absence of (or quantifying) target polynucleotide sequences and proteins in at least one sample using encoding and decoding reactions. When a particular target polynucleotide is present in a sample for example, a reaction product is formed in the encoding reaction that includes addressable primer portions. At least one labeling probe and at least one address primer can be employed in the decoding amplification reaction thereby providing a detectable signal value depending upon whether a sequence is present or absent. In some embodiments, the encoding comprises a ligation reaction with linker probes, and single nucleotide polymorphisms (SNPs) are analyzed.
Abstract:
In some embodiments, an analyte detection system is provided that includes a nanochannel, an electrode arrangement, and a plurality of nanoFET devices disposed in the nanochannel. A plurality of nucleic acid base detection components can be used that include a plurality of nanopores, a plurality of nanochannels, a plurality of hybridization probes, combinations thereof, and the like. According to other embodiments of the present teachings, different coded molecules are hybridized to a target DNA molecule and used to detect the presence of various sequences along the target molecule. A kit including mixtures of coded molecules is also provided. In some embodiments, devices including nanochannels, nanopores, and the like, are used for manipulating movement of DNA molecules, for example, in preparation for a DNA sequencing detection. Nanopore structures and methods of making the same are also provided as are methods of nucleic acid sequencing using the nanopore structures. Surface-modified nanopores are provided as are methods of making them. In some embodiments, surfaced-modified nanopores for slowing the translocation of single stranded DNA (ssDNA) through the nanopore are provided, as are nanopores configured to detect each of a plurality of different bases on an ssDNA strand.
Abstract:
The present disclosure relates to methods of analyzing binding interactions between a binding component and a receptor component by translocating unbound and any bound components through a pore and detecting the unbound and bound components.
Abstract:
The present teachings provide methods, compositions, and kits for detecting the presence of protein aggregates. In some embodiments, the protein aggregate is treated with a labeled precursor, and the labeled precursor is incorporated into the protein aggregate to form a labeled protein aggregate. The labeled protein aggregate is then measured, thus detecting the presence of the protein aggregate. In some embodiments, the labeled protein aggregate is detected by interaction of labeled precursors, for example by a proximity ligation assay.
Abstract:
The present invention is directed to methods, reagents, and kits for detecting the presence or absence of (or quantifying) target polynucleotide sequences and proteins in at least one sample using encoding and decoding reactions. When a particular target polynucleotide is present in a sample for example, a reaction product is formed in the encoding reaction that includes addressable primer portions. At least one labeling probe and at least one address primer can be employed in the decoding amplification reaction thereby providing a detectable signal value depending upon whether a sequence is present or absent. In some embodiments, the encoding comprises a ligation reaction with linker probes, and single nucleotide polymorphisms (SNPs) are analyzed.