Abstract:
Methods and systems for ordering assays which detect SNPs or gene expression are provided. The methods use PCR and RT-PCR procedures. Collections of stock assays are assembled using pre- and post -manufacturing quality control procedures and made available to consumers via the Internet. In addition, custom assays are prepared upon order from the consumer and these assays are also prepared using pre- and post-manufacturing quality control procedures (54). The assays are then delivered to the consumer (58).
Abstract:
Methods and systems for ordering assays which detect SNPs or gene expression are provided. The methods use PCR and RT-PCR procedures. Collections of stock assays are assembled using pre-and post -manufacturing quality control procedures and made available to consumers via the Internet. In addition, custom assays are prepared upon order from the consumer and these assays are also prepared using pre-and post-manufacturing quality control procedures. Th e assays are then delivered to the consumer.
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:
Kits, primers, and methods are provided herein for detecting relative target source to reference source ratios in a biological sample, by distributing the biological sample into discrete subsamples, wherein the biological sample includes, a plurality of target molecules on a target source; and a plurality of reference molecules on a reference source; providing target primers directed to one or more of the plurality of target molecules and reference primers directed to one or more of the plurality of reference molecules; performing digital amplification with the target primers and the reference primers; and detecting the presence or absence of amplified target products with target probes and detecting the presence or absence of amplified reference products with reference probes, wherein the ratio of amplified target products to amplified reference products is indicative of a relative amount of target source to reference source in a biological sample.
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 teachings provide methods, compositions, and kits for reverse transcribing and amplifying small nucleic acids such as micro RNAs. High levels of multiplexing are provided by the use of a zip-coded stem-loop reverse transcription primer, along with a PCR- based pre-amplification reaction that comprises a zip-coded forward primer. Detector probes in downstream decoding PCRs can take advantage of the zip-code introduced by the stem-loop reverse transcription primer. In some embodiments, further amplification is achieved by cycling the reverse transcription reaction. The present teachings also provide compositions and kits useful for performing the reverse transcription and amplification reactions described herein.
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:
A method is described for identifying a nucleotide at a defined point on a nucleic acid sequence. An oligonucleotide probe is annealed to a target nucleotide sequence of the nucleic acid sample at a point immediately adjacent and 3' to the nucleotide of interest. The probe is then extended in the direction of the nucleotide of interest in a reaction medium containing at least one chain terminating nucleotide triphosphate (ATP, GTP, TTP and CTP). The nucleotide of interest is complementary to the labeled nucleotide incorporated into the primer by the extension reaction.