Abstract:
Under one aspect, a composition includes a substrate; a first polynucleotide coupled to the substrate; a second polynucleotide hybridized to the first polynucleotide; and a catalyst coupled to a first nucleotide of the second polynucleotide, the catalyst being operable to cause a chemiluminogenic molecule to emit a photon. Under another aspect, a method includes providing a catalyst operable to cause a first chemiluminogenic molecule to emit a photon; providing a substrate; providing a first polynucleotide coupled to the substrate; hybridizing a second polynucleotide to the first polynucleotide; coupling a first quencher to a first nucleotide of the second polynucleotide; and inhibiting, by the first quencher, photon emission by the first chemiluminogenic molecule.
Abstract:
This disclosure is related to a method for determining the identity of a nucleotide residue of a single- stranded DNA or RNA, or sequencing DNA or RNA, in a solution using an ion-sensing field effect transistor and reversible nucleotide terminators.
Abstract:
Described is a method for methylation detection in a DNA sample. An isolated genomic DNA sample is treated in a manner capable of distinguishing methylated from unmethy-lated cytosine bases. The pretreated DNA is amplified us-ing at least one oligonucleotide primer, a polymerase and a set of nucleotides of which at least one is labeled with a first type of label. A sequence-specific oligonu-cleotide probe, marked with a second type of label, hy-bridizes to the amplification product and a FRET reaction occurs if a labeled oligonucleotide is present in close proximity in the amplification product. The method deter-mines the level of methylation of a sample by measuring the extent of fluorescence resonance energy transfer (FRET) between the donor and acceptor fluorophore.
Abstract:
Die Erfindung betrifft ein Verfahren zur Analyse der Genexpression, d.h. zur parallelen Analyse der Expression einer grossen Anzahl von Genen. Die Methode basiert auf der Analyse von Sequenzen an vielen gebundenen Nukleinsäureketten. Dazu werden kurze Sequenzabschnitte aus jeder dieser Ketten ermittelt. Die anschliessende Auswertung und der Vergleich mit Gensequenzen in Datenbanken erlaubt Aussagen über die exprimierten Gene und die Stärke ihrer Expression.
Abstract:
The present invention is directed to a method of assembling genomic maps of an organism's DNA or portions thereof. A library of an organism's DNA is provided where the individual genomic segments or sequences are found on more than one clone in the library. Representations of the genome are created, and nucleic acid sequence information is generated from the representations. The sequence information is analyzed to determine clone overlap from a representation. The clone overlap and sequence information from different representations is combined to assemble a genomic map of the organism. Once the genomic map is obtained, genomic sequence information from multiple individuals can be applied to the map and compared with one another to identify single nucleotide polymorphisms. These single nucleotide polymorphisms can be detected, and alleles quantified, by conducting (1) a global PCR amplification which creates a genome representation, and (2) a ligation detection reaction process whose ligation products are captured by hybridization to a support.
Abstract:
The present invention provides a novel method for labeling and sequencing nucleic acid molecules, particularly DNA molecules in which an internally labeled, partially extended primer is elongated in a cycled primer extension reaction. An unlabeled DNA primer is contacted with a DNA template in the presence of suboptimal amounts of four dNTPs, one of which is labeled with a detectable marker which may be a fluorescent or visible fluorophor, and infrared fluorophor or a radioactive label. This small, labeled primer extension product is then transferred to a new reaction where chain terminated primer extension products for DNA analysis are prepared.
Abstract:
The invention provides fast and highly accurate mass spectrometer based processes for detecting a particular nucleic acid sequence in a biological sample. Depending on the sequence to be detected, the processes can be used, for example, to diagnose a genetic disease or chromosomal abnormality; a predisposition to a disease or condition, infection by a pathogenic organism, or for determining identity or heredity.
Abstract:
Novel methods of ChlP-seq are disclosed herein. These methods of ChlP-seq employ carrier DNA to prevent loss of DNA samples. The greater DNA yields achieved by this invention permit ChlP-seq of a small number of cells, permitting epigenetic analysis of primary cells of limited quantity.
Abstract:
This disclosure provides, among other things, methods for generating and applying therapeutic interventions. The methods involve, for example, (a) sequencing polynucleotides from cancer cells from a subject; (b) identifying and quantifying somatic mutations in the polynucleotides; (c) developing a profile of tumor heterogeneity in the subject indicating the presence and relative quantity of a plurality of the somatic mutations in the polynucleotides, wherein different relative quantities indicates tumor heterogeneity; and (d) determining a therapeutic intervention for a cancer exhibiting the tumor heterogeneity, wherein the therapeutic intervention is effective against a cancer having the profile of tumor heterogeneity determined.
Abstract:
The present invention provides a method of detecting a heteroresistant population of a pathogen in a sample, the method comprising: a) providing a sample comprising a population of a pathogen; b) extracting nucleic acids from the sample; c) amplifying a target locus of the genome of the pathogen in the extracted nucleic acids, wherein the target locus comprises at least one minor variant associated with drug resistance in the pathogen; d) consecutively sequencing both overlapping nucleic acid strands from a single DNA molecule amplified from the target locus on a Next Generation Sequencing (NGS) platform; e) applying an alignment algorithm to sequencing data from the overlapping nucleic acid strands; and f) performing an analysis of the aligned sequencing data to detect the at least one minor variant and heteroresistant population of the pathogen.