85 results about "Human metapneumovirus RNA" patented technology

The present disclosure relates to novel compounds of formulas (1) through (19) and to a method for treating humans infected with a virus including various respiratory viruses such as members of the Paramyxoviridae family (respiratory syncytial virus (RSV), human metapneumovirus (HMPV), human parainfluenza virus (HPIV), measles virus, and mumps virus) with a compound of formulas (1) through (19). The present disclosure also relates to a cytopathic effect (CPE)-based assay that will assess virus-induced CPE for screening of compounds for treating viral diseases or inhibiting a virus.

The present invention relates to recombinant bovine parainfluenza virus (bPIV) cDNA or RNA which may be used to express heterologous gene products in appropriate host cell systems and/or to rescue negative strand RNA recombinant viruses that express, package, and/or present the heterologous gene product. In particular, the heterologous gene products include gene product of another species of PIV or from another negative strand RNA virus, including but not limited to, influenza virus, respiratory syncytial virus, human metapneumovirus and avian pneumovirus. The chimeric viruses and expression products may advantageously be used in vaccine formulations including vaccines against a broad range of pathogens and antigens.

The present invention provides an isolated mammalian negative strand RNA virus, metapneumovirus (MPV), within the sub-family Pneumoviridae, of the family Paramyxoviridae. The invention also provides isolated mammalian negative strand RNA viruses identifiable as phylogenetically corresponding or relating to the genus Metapneumovirus and components thereof. In particular the invention provides a mammalian MPV, subgroups and variants thereof. The invention relates to genomic nucleotide sequences of different isolates of mammalian metapneumoviruses, in particular human metapneumoviruses. The invention relates to the use of the sequence information of different isolates of mammalian metapneumoviruses for diagnostic and therapeutic methods. The present invention relates to nucleotide sequences encoding the genome of a metapneumovirus or a portion thereof, including both mammalian and avian metapneumovirus. The invention further encompasses chimeric or recombinant viruses encoded by said nucleotide sequences. The invention also relates to chimeric and recombinant mammalian MPV that comprise one or more non-native or heterologous sequences. The invention further relates to vaccine formulations comprising mammalian or avian metapneumovirus, including recombinant and chimeric forms of said viruses. The vaccine preparations of the invention encompass multivalent vaccines, including bivalent and trivalent vaccine preparations.

The invention belongs to the technical fields of biochips and diagnostic reagents, and discloses a method for detecting various respiratory viruses, and primers and probes thereof. In the invention, nucleotide sequences of 14 respiratory viruses, namely adenovirus, human metapneumovirus, influenza virus A, influenza virus B, respiratory syncytial virus, bocavirus, rhinovirus, coronavirus (HKU1, NL63 and SARS), and parainfluenza virus (type I, type II, type III and type IV) are analyzed, and corresponding reverse transcription primers, PCR primers and specific probes are designed. Specific gene segments are amplified by reverse transcription and multiple asymmetric PCR methods; a fluorescence-coded microsphere group coupled with the virus specific probes and the PCR amplification product are incubated and hybridized by liquid phase chip technology; and finally the Bio-PlexTM200 is used for detection. The detection method has the advantages of high flux, high specificity and sensitivity, stable results and good repeatability, the detection method is easy to operate, and the detection speed is high.

The present invention relates to methods for broad spectrum prevention and treatment of viral respiratory infection. In particular, the present invention relates to methods for preventing, treating or ameliorating symptoms associated with respiratory syncytial virus (RSV), parainfluenza virus (PIV), and/or human metapneumovirus (hMPV) infection, the methods comprising administering to a subject an effective amount of one or more anti-RSV-antigen antibodies or antigen-binding fragments thereof, one or more anti-hMPV-antigen antibodies or antigen-binding fragments thereof, and/or one or more anti-PIV-antigen antibodies or antigen-binding fragments thereof. In certain embodiments, a certain serum titer of the anti-RSV-antigen antibodies, anti-PIV-antigen antibodies, and/or anti-hMPV-antigen antibodies or antigen-binding fragments thereof is achieved in said subject. In certain specific embodiments, the subject is human and, preferably, the anti-RSV-antigen antibody, anti-PIV-antigen antibody, and/or anti-hMPV-antigen antibodies are human or humanized. The present invention relates further to compositions comprising the anti-RSV-antigen antibodies, anti-PIV-antigen antibodies, and/or anti-hMPV-antigen antibodies or antigen-binding fragments thereof. The present invention also relates to detectable or diagnostic compositions comprising the one or more anti-RSV-antigen antibodies, anti-PIV-antigen antibodies, and/or anti-hMPV-antigen antibodies or antigen-binding fragments thereof and methods for detecting or diagnosing RSV, PIV and/or hMPV infection utilizing the compositions.

The present invention relates to new methods and nucleic acid sequences for the detection and quantification of human metapneumovirus.

The invention discloses a Multiplex PCR detection kit for nucleic acids of twelve respiratory viruses. The kit includes primers for amplifying the specific gene loci of the following twelve respiratory viruses: influenza A virus (Inf A), influenza A H1N1 (2009), influenza A H3N2, human parainfluenza virus (HPIV1), human parainfluenza virus (HPIV2), human parainfluenza virus (HPIV3), human parainfluenza virus (HPIV4), human metapneumovirus (hMPV), respiratory adenovirus (AdV), respiratory syncytial virus (RSV), bocavirus (BoV) and coronavirus (CoV). The kit allows multiplex detection, has high sensitivity and is convenient and quick to use. Specific primer sequences ensure reliability of detection results. A detection method is simple in operation, save time and labor intensity, has high detection throughput, is low in cost of reagent and consumable, and can directly detect the nucleic acids extracted from a respiratory pathogen sample, is low in requirement on detection platform and operation technology, and can be widely promoted in common detection.

The invention discloses a high-flux non-diagnostic detection method for 13 respiratory viruses based on a novel suspension chip technology. Aiming at the specificity gene sequences of 13 pieces or types of respiratory viruses, such as influenza viruses A and B, auxiliary influenza viruses 1 and 3, coronavirus SARS-CoV and CoV-NL63, respiratory syncytial viruses A and B, adenoviruses B and E, a rhinovirus, a human metapneumovirus and an enterovirus, 13 pairs of primers and corresponding specificity probes are designed; by multiple polymerase chain reaction (PCR) amplification and TSPE reaction, X-TAG nucleic acid fragment and biotin are respectively marked with corresponding gene fragments; the marked fragments are combined with corresponding encoded micro balls; and a suspension chip scanner is used for performing detection. The high-flux non-diagnostic detection method can accurately detect 13 respiratory viruses and subtypes of the 13 respiratory viruses; the probes do not generate cross reaction; the specificity is high; and the sensitivity is high. A high-flux, quick and accurate technical platform is capable of simultaneously detecting various respiratory viruses; technical equipment is supplied to the detection of pathogens of sudden respiratory tract infectious diseases; and information can be timely supplied to the handling of infectious disease epidemic situation burst.

The invention relates to probes and assays which are used for the simultaneous detection, in a single assay sample, of a plurality of nucleic acid sequences of viruses that cause respiratory infections in humans, selected from among influenza virus type A, influenza virus type B, influenza virus type C, human respiratory syncytial virus type A, human respiratory syncytial virus type B, human adenovirus, human parainfluenza virus type 1, human parainfluenza virus type 2, human parainfluenza virus type 3, human parainfluenza virus types 4A and 4B, enterovirus, rhinovirus, human coronavirus type 229E, human coronavirus type OC43, coronavirus that causes severe acute respiratory syndrome (SARS), human metapneumovirus and combinations thereof.

The present invention discloses methods for generating antibodies to human metapneumovirus (HMPV) polypeptides, including antibodies that immunospecifically bind to a HMPV F-protein. The invention also discloses methods for preventing, treating, or ameliorating symptoms associated with HMPV infection.

The invention discloses a double-fluorescent PCR detection primer, a probe, reaction liquid and a kit capable of rapidly detecting 16 pathogens of the respiratory tract. The kit comprises pre-subpackaged PCR reaction liquid, RT-PCR enzyme, a positive quality control product and a negative quality control product, wherein the pre-subpackaged PCR reaction liquid is provided with a primer and a TaqMan probe for detecting at least two of the following pathogens: respiratory syncytial virus, enterovirus, coronavirus NL63, coronavirus HKU1, coronavirus 229E, coronavirus OC43, parainfluenza virus type I, parainfluenza virus type II, rhinovirus, parainfluenza virus type III, human bocavirus, human metapneumovirus, mycoplasma pneumoniae, chlamydia pneumoniae, adenovirus and legionella pneumophila. The kit is convenient to operate, and can be used for at most screening 16 syndrome pathogens of the respiratory tract within 2 hours, so that the detection time and cost are greatly saved. The kit has the greatest advantages of simplicity in operation and strong practicability, and can be easily popularized in laboratories of the ports.

There is provided an immunological composition that comprises a nucleic acid vector which includes a promoter region operably linked to a coding sequence encoding the human metapneumovirus F antigen or the human metapneumovirus G antigen. The immunological composition is useful for administering to an individual to elicit an immune response to human metapneumovirus in the individual and for the generation of diagnostic reagents for hMPV.

The invention relates to a gene chip for detecting important respiratory pathogenic viruses. A preparation method of the gene chip comprises the following steps of: preparing a specific primer; preparing a virus specific probe; preparing an oligonucleotide chip; establishing an RT-PCR (Reverse Transcription-Polymerase Chain Reaction) system; establishing a hybrid system; preparing a visual detection reagent; and establishing a developing method. The gene chip prepared by the invention can be used for simultaneously discriminating nine general respiratory pathogenic viruses comprising A and B type influenza viruses, parainfluenza viruses type 1 and 2, human metapneumovirus, respiratory syncytial virus, measles virus, rubella virus and mumps virus, provides a new solution for quickly detecting the general respiratory pathogenic viruses at high throughout and can provide guidance for monitoring, clinically diagnosing and treating the respiratory pathogenic viruses.

The invention relates to the technical field of primer and probe sequences for detecting nucleonic acid of human metapneumovirus: a biotechnology and a virus detection technology and provides a primer and MGB (Myohaemoglobin) probe sequence for real-time RT-PCR (Reverse Transcription-Polymerase Chain Reaction) detection of human metapneumovirus nucleonic acid. The sequence is a primer and probe sequence which is designed and synthesized by carrying out sequence detection and analysis on an N gene and an L gene of known hMPV (human Metapneumovirus) and takes the L gene as a target. The sequence is researched and verified by 200 clinical samples detected with the real-time RT-PCR method, and the degenerate base group of the sequence includes the variation rule of 4 genetic subtypes of the hMPV, therefore, the sequence can be used for the research and the development of detection technology of nucleonic acid infected by the hMPV.

The invention provides a multiple PCR detection kit for pathogens of respiratory tract, an application and an application method thereof. The PCR detection kit comprises a mixture of various primers and probes, a PCR reaction liquid, a PCR enzyme liquid, an inner quality control product and a nucleic acid extraction reagent. The detection kit is respiratory syncytial virus used for detecting one or more pathogens of influenza a virus, influenza B virus, respiratory syncytial virus, parainfluenza I, parainfluenza II, parainfluenza III, adenovirus, human metapneumovirus and enterovirus or rhinovirus. The application of the kit comprises the following steps: firstly, carrying out sampling; then carrying out PCR amplification and detection; and finally, obtaining a detection result. By combingand coordinating the nucleic acid extraction reagent, the primer pairs, the probes, a PCR program, the PCR reaction liquid and the PCR enzyme liquid, the technical effects of shortening the detectiontime and being good in detection sensitivity and good in specificity are achieved finally.

The invention belongs to the field of biotech applications and relates to a multiplex fluorescence RT-PCR (reverse transcription-polymerase chain reaction) method including internal quality control and a kit for simultaneously detecting human type A and type B respiratory syncytial viruses and human metapneumoviruses. Specific primers and probes are designed for N genes, L genes and conserved sequences of the L genes of representive strains of the human type A and type B respiratory syncytial viruses and the human metapneumoviruses, the one-step multiplex fluorescence RT-PCR quick detection method including the internal quality control is simple and quick to operate, the tediousness of a conventional single fluorescence RT-PCR single-hole single-detection method is avoided, the operation program is simplified, the test cost is reduced, and strong technical support is provided for aspects of field detection, hygienic evaluation, clinical diagnosis and the like of the viruses by virtue of relatively high specificity, sensitivity, high efficiency and stability of the method.

The present invention is directed to alphavirus vectored vaccine contructs encoding paramyxovirus proteins that find use in the prevention of respiratory syncytial virus or human metapneumovirus infections. In particular, these vaccines induce cellular and humoral immune responses that inhibit RSV. Also disclosed are improved methods for producing alphavirus vectored paramyxovirus vaccines.

The invention discloses a collaborative quadruple real-time fluorescence PCR detection method for simultaneously detecting target nucleic acids of nine pathogens by using three PCR reaction tubes. Themethod is used for detecting influenza A virus (FluA), influenza B virus (FluB), parainfluenza virus (PIV), respiratory syncytial virus (RSV), mycoplasma pneumoniae (MP), chlamydia pneumoniae (Cpn),adenovirus (ADV), human rhinovirus (HRV) and human metapneumovirus (hMPV) in samples. The method is rapid to operate, can be completed by one-step cooperation and has high sensitivity. In addition, the invention also relates to a reagent involved in the PCR method, a detection kit used for the method, preparation and application of the detection kit and the like.

The invention relates to a suspension microbead array system for detecting common pathogens of the respiratory tract infection. The system detects influenza A virus, influenza B virus, parainfluenza virus, human metapneumovirus, rhinovirus, bocavirus, adenovirus, respiratory syncytial virus, mycoplasma pneumoniae, moraxella catarrhalis, haemophilus influenza, streptococcus pneumoniae and bordetella pertussis in one experiment. The suspension microbead array system finishes the detection of 8 viruses, 4 bacteria and 1 mycoplasma in one experiment, prevents leak detection to the greatest extent, and is beneficial for the targeted clinical treatment; the cost of reagents, if divided on the detection of each index, is greatly lowered, so that the medical cost is reduced.

The invention relates to a multiplex real-time PCR kit and method for detecting respiratory pathogens and an application. The kit comprises a reagent for detecting influenza A viruses, influenza B viruses, human rhinoviruses and human metapneumoviruses; the reagent comprises a probe for detecting the viruses, a primer pair for specifically amplifying corresponding virus target genes, a reaction buffer solution, an enzyme mixture, a positive control and a negative control; and a detection channel of the influenza A viruses is FAM, a detection channel of the influenza B viruses is VIC, a detection channel of the human rhinoviruses is Texas Red, and a detection channel of the human metapneumoviruses is Cy5. The kit disclosed by the invention can be used for simultaneously detecting the four kinds of viruses, simplifies the operation process, shortens the detection time, improves the detection flux and reduces the detection cost while having high sensitivity and specificity, and can be universally applied to various fluorescent quantitative PCR instruments.

Provided are non-competitive internal controls for use in nucleic acid tests (NATs), which are obtained from the organisms Methanobacterium thermoautrophicum (MET) and Zea mays (Corn). The non-competitive internal controls have utility in DNA and RNA NATs selected from Influenza A, Influenza B, parainfluenza viruses 1 to 4 (PIV-1 to PIV-4), respiratory syncytial virus type A (RSV A), RSV B, human metapneumovirus (hMPV), Chlamydia trachomatis (CT), and Neisseria gonorrhea (GC), Hepatitis B virus (HBV), Hepatitis C virus (HCV), Human Immunodeficiency Virus I (HIV-1), and Severe Acute Respiratory Syndrome (SARS).

The invention provides a detecting kit for influenza viruses A and B, human metapneumovirus and human coronaviruses NL63, HKU1 and OC43. The detecting kit comprises a specific pathogen primer and a pathogen gene probe. The detecting kit for influenza viruses A and B, human metapneumovirus and human coronaviruses NL63, HKU1 and OC43 is used for carrying out RT-PCR (Reverse Transcription-Polymerase Chain Reaction) by using the specifically designed pathogen primer and pathogen gene probe on the basis of a multi-fluorescent real-time PCR and Tem-PCR technology, so that the amplification efficiency can be greatly increased to ensure that the detected result can still have very high detecting sensitivity by using a common TaqDNA polymerase, and furthermore, the problems of low amplification efficiency and low detecting sensitivity of the traditional multi-PCR are solved.

The invention discloses application of a bupleurum chinense extract in treatment of viral pneumonia, and relates to the technical field of traditional Chinese medicines. The invention discloses application of the bupleurum chinense extract in preparation of a medicine for treating viral pneumonia. The bupleurum tenuifolium extract has a relatively strong inhibition effect on viruses, has a lower usage amount, can be used for treating pneumonia caused by influenza A viruses, human rhinoviruses, human adenoviruses, common coronaviruses, coxsackie viruses or parainfluenza viruses, and is ineffective to viral pneumonia caused by herpes simplex viruses and human metapneumoviruses. A new strategy is provided for treating viral pneumonia.