Abstract:
Methods and compositions for probe, amplification to detect, identify, quantitate, and/or analyze a targeted nucleic acid sequence. After hybridization between a probe and the targeted nucleic acid, the probe is modified to distinguish hybridized probe from unhybridized probe. Thereafter, the probe is amplified. Moreover, in specific embodiments, the present invention involves a chimeric probe that is particularly effective when the targeted nucleic acid sequence is short and/or has a relatively low concentration, such as with an miRNA molecule.
Abstract:
Methods and compositions for probe , amplification to detect, identify, quantitate, and/or analyze a targeted nucleic acid sequence. After hybridization between a probe and the targeted nucleic acid, the probe is modified to distinguish hybridized probe from unhybridized probe. Tl ereafter, the probe is amplified. Moreover, in specific embodiments, the present invention involves a chimeric probe that is particularly effective when the targeted nucleic acid sequence is short and/or has a relatively low concentration, such as with an miRNA molecule.
Abstract:
Disclosed are methods that allow one or more nucleic acid targets to be compared across two or more nucleic acid samples. Nucleic acid tags are appended to the samples to be assessed, such that each sample has a unique tag. The tagged nucleic acids are then mixed, and the targets within the mixture are amplified. The amplification products are distinguished using the unique tag domains to reveal the abundance of the amplification products derived from each sample, which correlates to the relative abundance of the target in the samples.
Abstract:
Methods are disclosed that convert two or more complex nucleic acid samples into a single collection of normalized target molecules that can be used to compare the abundance of each of the targets in the original samples. Multiple RNA or DNA samples are uniquely tagged and pooled to create a sample mixture. A defined set of target within the sample mixture is converted to approximately equal amounts of nucleic acid by one of several methods employing primer extension with a set of target specific primers. The concentration of target specific primers is equal and limiting for all targets, therefore an appropriate number of primer extension cycles converts all targets to similar final concentrations of product nucleic acid. The different tags appended to the sample nucleic acids from each sample population unique. These different tags are used to generate RNA or DNA , molecules for analysis that derive form each of the input samples. The disclosed methods are primarily intended to enhance gene array analysis, however, any method used to compare multiple nucleic acid targets form different samples will benefit form the invention.
Abstract:
Disclosed are methods that allow one or more targets to be compared across two or more nucleic acid populations. The methods rely on first mixing sample populations that are being compared. The sample mixture is then divided into target fractions using hybridization to polynucleotides or oligonucleotides that can be separated form the sample mixture. the target fraction(s) are independently amplified such that the targets from each sample compete for amplification reagents. The amplification products are quantified in a manner that differentiates the sample from which a particular amplification product arose. The relative abundance of amplification products descended from each sample population reflects the level of target present in each of the original samples, providing a direct comparison of the abundance of the target sequences in the samples being characterized.
Abstract:
Disclosed are methods that allow one or more targets to be compared across two or more nucleic acid populations. The methods rely on first mixing sample populations that are being compared. The sample mixture is then divided into target fractions using hybridization to polynucleotides or oligonucleotides that can be separated form the sample mixture. the target fraction(s) are independently amplified such that the targets from each sample compete for amplification reagents. The amplification products are quantified in a manner that differentiates the sample from which a particular amplification product arose. The relative abundance of amplification products descended from each sample population reflects the level of target present in each of the original samples, providing a direct comparison of the abundance of the target sequences in the samples being characterized.
Abstract:
Methods are disclosed that convert two or more complex nucleic acid samples into a single collection of normalized target molecules that can be used to compare the abundance of each of the targets in the original samples. Multiple RNA or DNA samples are uniquely tagged and pooled to create a sample mixture. A defined set of target within the sample mixture is converted to approximately equal amounts of nucleic acid by one of several methods employing primer extension with a set of target specific primers. The concentration of target specific primers is equal and limiting for all targets, therefore an appropriate number of primer extension cycles converts all targets to similar final concentrations of product nucleic acid. The different tags appended to the sample nucleic acids from each sample population unique. These different tags are used to generate RNA or DNA , molecules for analysis that derive form each of the input samples. The disclosed methods are primarily intended to enhance gene array analysis, however, any method used to compare multiple nucleic acid targets form different samples will benefit form the invention.
Abstract:
Methods and compositions for inhibiting and/or inactivating nucleases by using nuclease inhibitors are provided. The nuclease inhibitors comprise anti-nuclease antibodies and non-antibody nuclease inhibitors.
Abstract:
Disclosed are methods that allow one or more nucleic acid targets to be compared across two or more nucleic acid samples. Nucleic acid tags are appended to the samples to be assessed, such that each sample has a unique tag. The tagged nucleic acids are then mixed, and the targets within the mixture are amplified. The amplification products are distinguished using the unique tag domains to reveal the abundance of the amplification products derived from each sample, which correlates to the relative abundance of the target in the samples.
Abstract:
Methods are provided for generating nucleic acid fingerprints from complex nucleic acid populations. The methods rely on the addition of a nucleic acid tag with at least two functional domains to members of the complex population being assessed. Primers specific to the appended tag and arbitrary or adapter-specific primers are used to amplify subsets of the complex population. The amplified population is then used to generate labeled products for comparative expression analysis using the functional domain of the appended tag sequence that was not used for amplification. The separation of amplification and labeling substantially reduces the number of false positives common in amplification fingerprinting experiments by removing all amplification products from the analysis that do not derive from the anchored ends of the nucleic acid population.