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4026results about "Virus peptides" patented technology

Reduction of porcine circovirus-2 viral load with inactivated PCV-2

Porcine circovirus-2 (PCV-2) is a recently identified agent wherein the potential spectrum of PCV-2-associated disease has been expanded by evidence of vertical and sexual transmission and associated reproductive failure in swine populations. PCV-2 was isolated from a litter of aborted piglets from a farm experiencing late term abortions and stillbirths. Severe, diffuse myocarditis was present in one piglet associated with extensive immunohistochemical staining for PCV-2 antigen. Variable amounts of PCV-2 antigen were also present in liver, lung and kidney of multiple fetuses. Inoculation of female pigs with a composition including an immunogen from PCV-2 or an epitope of interest from such an immunogen or with a vector expressing such an immunogen or epitope of interest prior to breeding, such as within the first five weeks of life, or prior to the perinatal period, or repeatedly over a lifetime, or during pregnancy, such as between the 6th and 8th and/or the 10th and 13th weeks of gestation, can prevent myocarditis, abortion and intrauterine infection associated with porcine circovirus-2. In addition, innoculation of male and/or female pigs with the aforementioned compositions can be carried out to prevent transmission of PCV-2 from male to female (or vice versa) during mating. Thus, the invention involves methods and compositions for preventing myocarditis, abortion and intrauterine infection associated with porcine circovirus-2.
Owner:QUEENS UNIV OF BELFAST +4

Human SARS-CoV-2 monoclonal antibody and preparation method and application thereof

The invention discloses a human SARS-CoV-2 monoclonal antibody. The preparation method of the human SARS-CoV-2 monoclonal antibody comprises the steps: adopting SARS-CoV Nucleocapsid recombinant protein as immunogen, immunizing BALB/c mice, performing fusion and subcloning on spleen cells and myeloma cells of mice, then performing a large amount of repeated screening and domestication of cell lines through commercialized products SARS-CoV-2 Nucleocapsid and MERS Nucleocapsid so as to obtain a hybridoma cell line capable of secreting the SARS-CoV-2-resistant N monoclonal antibody with high affinity and high specificity finally and successfully, and finally performing ascites preparation and purification so as to obtain the monoclonal antibody, wherein the amino acid sequence of the SARS-CoVNucleocapsid recombinant protein is shown in SEQ ID No. 1. The invention also discloses application of the monoclonal antibody in preparation of SARS-CoV-2 virus detection products and preparation ofdrugs for inhibiting the SARS-CoV-2 viruses. The monoclonal antibody can be used for detecting the SARS-CoV-2 in human throat swabs/pulmonary secretions and other samples by using a double-antibody sandwich method, and can be applied to diagnosis and prevention and control of SARS-CoV-2 virus infection and scientific researches of viruses and other study.
Owner:BEIJING BIOSYNTHESIS BIOTECH
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