95 results about "Oligonucleotide Primer" patented technology

The invention belongs to the technical field of virus detection, and particularly relates to a freeze-dried PCR reagent and kit for respiratory virus nucleic acid detection. Positive control; performing negative control; the reaction freeze-dried powder comprises an optimized buffer system, Taq DNA polymerase, reverse transcriptase, dNTP / dUTP Mix, a freeze-drying protective agent, a specific primer and a probe; the specific primer and the probe comprise an oligonucleotide upstream primer for specifically amplifying an M gene conserved region on an influenza A virus genome; by preparing reaction freeze-dried powder, an oligonucleotide primer, a probe, Taq DNA polymerase, reverse transcriptase, dNTP, an optimized buffer system, a freeze-drying protective additive and the like are prepared into components which stably coexist at normal temperature, the detection performance is consistent with that of a liquid reagent, normal-temperature transportation and storage can be realized, the transportation and storage cost of the fluorescent PCR reagent is greatly reduced, the shelf life is prolonged, and the fluorescent PCR reagent is suitable for industrial production. And operation steps are reduced.

The present invention relates to a novel oligonucleotide primer used for the synthesis of 5'-capped RNA. The novel oligonucleotide primer for RNA capping, represented by chemical formula 1 in the present invention, can be usefully utilized in the fields of nucleic acid therapeutic agents or vaccines.

The invention relates to a body temperature amplification test strip rapid detection method of Burkholderia gladioli coconut poison pathogenic variants in food. The invention also relates to an oligonucleotide primer probe composition for the method. The invention also relates to a detection kit containing the composition. When the composition is used for test strip body temperature amplification detection, burkholderia gladioli coconut poison pathogenic variant components in a food sample can be simply, rapidly, specifically and sensitively detected.

A method of collecting oral mucosal cells from a patient and evaluating the oral mucosal cells for oral squamous cell carcinoma predisposition in the patient includes collecting a sample of chewing gum from a patient that had chewed the chewing gum for a minimum of about 5 minutes up to about 30 minutes. The chewing gum includes a molecular adherent targeted towards oral mucosal cells with oral squamous cell carcinoma predisposition. A polymerase chain reaction (PCR) is performed on a DNA template prepared from the chewed chewing gum using oligonucleotide primers that are selected to amplify nucleic acids that screen for genomic sequence variations seen in genes that are indicative of oral squamous cell carcinoma predisposition in the patient.

The present disclosure generally relates to a method for rapidly detecting the presence or absence of serotypes that cause lymphogranuloma venereum (LGV) of Chlamydia trachomatis in biological or non-biological samples. The method may include performing an amplification step, a hybridization step, and a detection step. Further provided are oligonucleotide primers and probes targeting the pmpH gene of the L serotype of Chlamydia trachomatis, as well as a kit designed to detect the L serotype.

The invention relates to two compounds for RNA capping and application thereof, and belongs to the technical field of genetic engineering. The compound has a structure as shown in a formula (I), can be used as an initial capping oligonucleotide primer, is used for capping an mRNA 5'end, and has good capping efficiency and protein expression quantity; meanwhile, due to the fact that the fluorescent group marker is arranged, the fluorescent group marker can be used for detecting and tracking dynamic changes of mRNA in cells and living bodies, the delivery process, pharmacokinetics and other performance of mRNA in the cells or living bodies can be conveniently researched, and convenience is provided for research of mRNA vaccines / drugs in the cells or living bodies. # imgabs0 #

Provided herein are methods and compositions relating to the characterization of the dengue virus genome. The disclosure provides oligonucleotides primers for the amplification of the dengue virus genome for downstream sequencing, alignment, and identification of variants in the dengue virus genome.

The invention provides a system and methods of multiplexed, solid-phase isothermal nucleic acid amplification. In various aspects, the invention uses a microfluidic device that includes a field of actuatable microposts in a reaction (or assay) chamber to enhance fluid flow, mixing, and hybridization / capture efficiency in a solid-phase capture assay. In various other aspects, the invention uses oligonucleotide primers immobilized in a field of actuatable microposts in a reaction chamber of a microfluidics device for capture and amplification of target-specific nucleic acids in a sample fluid. The invention provides methods of producing a micropost field (array) on a substrate for printing of a capture array (e.g., an array of primer spots). The invention also provides methods of printing an array of capture spots (e.g., primer spots) on the substrate surface of a micropost field.

A composition for identifying a hemp cultivar Pinkpepper or a progeny plant thereof includes the oligonucleotide primer set of SEQ ID NOs: 7 and 8, and / or the oligonucleotide primer set of SEQ ID NOs: 9 and 10. A method for identifying hemp cultivar Pinkpepper or a progeny plant thereof includes extracting genomic DNA from a hemp plant, amplifying a target sequence by having the extracted genomic DNA as template and carrying out an amplification reaction using the oligonucleotide primer set, and detecting a product produced by the application of the target sequence.

Flow cells and methods are described that enable control over DNA fragment length bias during amplification. One example flow cell includes a substrate and a polymeric hydrogel positioned over at least a portion of the substrate. A plurality of oligonucleotide primers may be attached to the polymeric hydrogel, wherein the plurality of oligonucleotide primers defines a density gradient across the substrate of the flow cell.

The invention provides methods for simultaneously enriching multiple target regions of interest in one reaction volume, from cell-free DNA isolated from a blood or plasma sample, followed by high-thought sequencing and sequence read analysis. The invention also provides library of target-specific oligonucleotide primers or probes for the multiplexed target enrichment.

The present disclosure provides for methods of generating a single stranded primer from an oligonucleotide probe. For instance, the present disclosure is directed to a method of preparing oligonucleotide primers from oligonucleotide probes, such as oligonucleotide probes which have been amplified, and which include a target specific primer sequence, a forward primer binding site, and a reverse primer binding site. It is believed that the presently disclosed method permits the synthesis of thousands to hundreds of thousands and even a million primers in a cost-effective manner, with good yield, in high quantities and at high purity levels.

The present application relates to a kind of oligonucleotide primer probe compositions for detecting Pseudomonas syringae, the pathogen of vegetable leaf spot disease based on ERA fluorescence method or ERA test strip method, and the detection method using the composition.The present application can simply, quickly, specifically, sensitively and visually broad-spectrum identify a variety of pathogenic variants of Pseudomonas syringae, the pathogen of vegetable leaf spot disease, the method is easy to operate, reaction time is short, without complex temperature control equipment, can be widely applied to the on-site rapid screening and disease diagnosis of Pseudomonas syringae in vegetable sample.

Disclosed herein are novel methods and compositions for rapidly extracting and amplifying nucleic acids from a sample where the sample is combined with an extraction reagent comprising a reducing agent to form a mixture and incubating said mixture at ambient temperature for a period of time not exceeding 30 minutes to generate a nucleic acid extract. In certain embodiments of the method, the nucleic acid extract is subjected to a nucleic acid amplification reaction. In certain aspects, oligonucleotide primers specific for nucleic acids of Chlamydia species and / or Neisseria species are added prior to initiating the amplification reaction.

The embodiment of the invention discloses a TaqMan real-time fluorescent quantitative PCR probe primer combination for identifying tilapia mossambica, a kit and application. Comprising a probe, an upstream primer and a downstream primer, the nucleotide sequence of the probe is 5 '-FAM-CGCTATACAGGG-MGB-3', the nucleotide sequence of the upstream primer is 5 '-GACTTTCCCCCATATTC-3', and the nucleotide sequence of the downstream primer is 5 '-GGGGTAGACAGTTCACCCTGTA-3'. Based on difference of mitochondrial control areas of different fishes, the TaqMan probe real-time fluorescent PCR detection method established by designing specific oligonucleotide primers and probes can effectively distinguish tilapia homosambica from other fishes, has excellent specificity and sensitivity in the aspect of identifying tilapia homosambica species, and can be used for detecting the species of tilapia homosambica. The detection accuracy is greatly improved, meanwhile, the detection time is shortened, the effects of stability, reliability, short period and low cost are achieved, and the actual application requirements are met.

Provided herein are methods and compositions for the synthesis of 5 '-capped RNA wherein the starting capped oligonucleotide primer has the general form m7Gppp [N2' Ome] n [N] m wherein m7G is an N7-methylated guanosine or any guanosine analog, N is any natural, modified or non-natural nucleoside, "n" may be any integer from 0 to 4 and "m" may be an integer from 1 to 9.

The present invention relates to the detection of modifications in polynucleotides by binding an affinity binding element to a nucleotide sequence. The affinity binding element may include a compound that binds to a modified nucleotide base and a nucleotide sequence complementary to a target nucleotide sequence, an oligonucleotide primer complementary to the target nucleotide sequence, or a nucleotide sequence complementary to an oligonucleotide linker. The present invention provides methods for detecting one or more modifications in a nucleotide sequence. The invention also provides affinity binding elements, and optionally, oligonucleotide primers and / or oligonucleotide probes, and methods of using the affinity binding elements in assays to detect modified bases. The methods of the invention enable the detection of modified nucleotides associated with cancer, psychiatric disorders or metabolic diseases.

Methods for rapidly and accurately detecting genetic material from hop latent viroid RNA (HLVd) that combines reverse transcription loop-mediated isothermal amplification (RT-LAMP) technology with specific oligonucleotide primers, fluorophore-labeled oligonucleotide primers, quencher-conjugated oligonucleotide primers, pH buffers, and enzymes, are described. The methods include at least one internal positive control targeting sequence, for minimizing false positive and false negative results, thereby allowing more certain interpretation of the results. The reaction can be performed at a single elevated temperature, can be completed in 1-1.5 hours, and the results can readily be interpreted by visually observing the fluorescence color of the reaction using ultraviolet light, or by using an electronic image acquisition system for viewing fluorescence results from one or more reactions.

The present invention is directed to a method for detecting the presence or absence of monkeypox virus (MPXV) in a biological sample, the method comprising: a) contacting the sample or nucleic acid extracted from said sample with reagents and an oligonucleotide combination capable of amplifying a target region of a monkeypox viral genome, wherein said oligonucleotide combination is selected from the group consisting of: i) a B7R oligonucleotide primer set specific for amplifying a target sequence in the B7R gene of the MPXV genome generating an MPXV amplification product comprising the sequence of SEQ ID NO:65; and ii) a G2R oligonucleotide primer set specific for amplifying a target sequence in the G2R gene of the MPXV genome generating an MPXV amplification product comprising the sequence of SEQ ID NO:63; b) performing an in vitro nucleic acid amplification reaction, wherein any MPXV nucleic acid present in the sample is used as a template to generate the MPXV amplification product corresponding to the oligonucleotide combination of i) or ii); and c) detecting the presence or absence of the MPXV amplification product generated in step b), wherein the presence of the MPXV amplification product is indicative of the presence of MPXV in the biological sample. The present invention also provides oligonucleotides which can be used in the method of the invention as primers and probes.

The present disclosure relates generally to devices and methods for rapid and accurate diagnosis of single nucleotide polymorphisms. According to one or more embodiments, a system for identifying a single nucleotide polymorphism (SNP) comprises an oligonucleotide primer having a SNP recognition sequence, a fluorophore conjugated to the oligonucleotide primer at a conjugation site to form a fluorophore-conjugated oligonucleotide primer, a polymerase for extending the oligonucleotide primer to form a double-stranded deoxyribonucleic acid (DNA) amplicon upon binding to an oligonucleotide strand having a complementary sequence to the oligonucleotide primer, and wherein the fluorophore-conjugated oligonucleotide primer is the only primer in the system such that the fluorophore emits a fluorescent signal only when the fluorophore-conjugated oligonucleotide primer binds to a sequence specifically complementary to the SNP recognition sequence.

The invention relates to a set of oligonucleotide primers, and kits and in vitro diagnostic devices comprising the set of oligonucleotide primers. The set of oligonucleotide primers, kits and in vitro diagnostic devices can be used in detecting Neisseria gonorrhoeae nucleic acid and diagnosing Neisseria gonorrhoeae infection with high sensitivity and specificity. The invention also relates to methods of loop-mediated isothermal amplification, methods of detecting Neisseria gonorrhoeae nucleic acid, and methods of diagnosing Neisseria gonorrhoeae infection using the set of oligonucleotide primers or the kits.

To provide oligonucleotide primers and oligonucleotide probes that specifically amplify and detect nucleic acids derived from Mycobacterium kansasii group present in a sample, and a detection method using the same.SOLUTION: The present invention provides a primer set as oligonucleotides for detecting a specific nucleotide sequence or its complementary sequence of DNA or RNA derived from Mycobacterium kansasii group, the primer set comprising at least a combination of a first primer being SEQ ID NO:8 or SEQ ID NO:11 and a second primer being SEQ ID NO:6 or SEQ ID NO:9, and a detection method using the same.SELECTED DRAWING: None

Disclosed are oligonucleotide primers that hybridize specifically with any base sequence designed from the base sequences of the N gene, RNA-dependent RNA polymerase gene, M gene, and S gene of SARS-COV-2, a nucleic acid amplification method using said primers, a test method for SARS-COV-2 infection by detection of nucleic acid amplification, and a COVID-19 test kit.

The present disclosure relates generally to devices and methods for rapidly and accurately diagnosing single-nucleotide polymorphisms. According to one or more embodiments, a system for identifying a single-nucleotide polymorphism (SNP) includes an oligonucleotide primer with a SNP recognition sequence, a fluorophore conjugated to the oligonucleotide primer at a conjugation site to form a fluorophore-conjugated oligonucleotide primer, a polymerase enzyme to extend the oligonucleotide primer upon binding to an oligonucleotide strand with a complimentary sequence to the oligonucleotide primer, forming a double stranded deoxyribonucleic acid (DNA) amplicon, and wherein the fluorophore-conjugated oligonucleotide primer is a sole primer in the system, such that the fluorophore only emits a fluorescent signal when the fluorophore-conjugated oligonucleotide primer binds to a sequence specifically complementary to the SNP recognition sequence.

Provided herein are methods and compositions for synthesizing 5′Capped RNAs wherein the initiating capped oligonucleotide primers have the general form m7Gppp[N2′Ome]n[N]m wherein m7G is N7-methylated guanosine or any guanosine analog, N is any natural, modified or unnatural nucleoside, “n” can be any integer from 0 to 4 and “m” can be an integer from 1 to 9.

The subject application pertains to compositions and methods for enhancing reverse transcriptase (RT) activity and / or reducing the inhibition of RT by inhibitors, such as formalin, tannic acid and / or heparin. In some embodiments, RT inhibition is reduced by the addition of potassium glutamate, histidine hydrochloride monohydrate, poloxamer 188, or any combination thereof to a reaction mixture comprising a polymerase. In other embodiments, RT is enhanced through the addition of a polyvinyl sulfonic acid sodium salt (PVSA) to a reaction mixture. The subject application also provides oligonucleotide primers for use in the reverse transcription of target sequences and its enhancement. These primers have high GC content or low GC content. Methods of using a RT inhibition reducer or a RT enhancer in a composition with an RNA template and RT improves RT yield, RT sensitivity, or RT tolerance to various chemicals are also provided.

A method of collecting oral mucosal cells from a patient and evaluating the oral mucosal cells for oral squamous cell carcinoma predisposition in the patient includes collecting a sample of chewing gum from a patient that had chewed the chewing gum for a minimum of about 5 minutes up to about 30 minutes. The chewing gum includes a molecular adherent targeted towards oral mucosal cells with oral squamous cell carcinoma predisposition. A polymerase chain reaction (PCR) is performed on a DNA template prepared from the chewed chewing gum using oligonucleotide primers that are selected to amplify nucleic acids that screen for genomic sequence variations seen in genes that are indicative of oral squamous cell carcinoma predisposition in the patient.

The present invention relates to methods for the detection of nucleic acids of defined sequence and kits and devices for use in said methods. The methods employ restriction enzymes. polymerase and oligonucleotide primers to produce an amplification product in the presence of a target nucleic acid. which is contacted with oligonucleotide probes to produce a detector product.

The invention discloses an initial capping oligonucleotide primer containing an HNA structure and a preparation method and application of the initial capping oligonucleotide primer, the structure of the initial capping oligonucleotide primer containing the HNA structure is shown in the formula I. In the formula I, R1 and R2 are independently selected from H, Me, MOE or F; x is selected from O, S or Se; the Base is selected from an adenine base, a guanine base, a cytosine base, a 5-methylcytosine base or uracil. According to the invention, the cap structure is optimized, the found initial capping oligonucleotide primer containing the HNA structure belongs to a new substance, the discovery of the substance provides platform significance for the research of mRNA series and the development of new products, and the range of mRNA research is widened. The initial capping oligonucleotide primer containing the HNA structure can be used for mRNA capping under a T7 RNA polymerase system.