Abstract:
Materials and methods are provided for treating influenza B infections in humans. Anti-human influenza virus monoclonal antibodies and antigen-binding fragments thereof having a neutralization activity against a human influenza B virus are provided. Methods for producing anti-human influenza B virus monoclonal antibodies are also provided. The antibodies and antigen-binding fragments thereof can be effective against a wide range of influenza B viral strains. Methods of inhibiting or treating a human influenza B infection are provided. The anti-influenza B therapeutics can also be used to manufacture medicaments effective against influenza B infections, to detect human influenza B in a human subject, for use in pharmaceutical compositions, and for use in kits for at least one of the prevention, the treatment, and the detection of human influenza B in a human subject.
Abstract:
The invention provides virus-like particles (VLP) highly secreting or producing signal peptide obtained by altering a signal sequence derived from West Nile virus (WNV), the signal peptide, a WNV VLP secretion expression vector containing a nucleic acid encoding prM protein and E protein, a WNP VLP highly secreting or producing animal cell line harboring the vector, a WNV vaccine containing WNV VLP obtained by the cell line as an active ingredient, and a WNV DNA vaccine containing the VLP secretion expression vector as an active ingredient.
Abstract:
Provided is a method of producing reassortant influenza virus containing an antigenic protein of the first influenza virus strain, the method including the following steps: 1) a step of irradiating the first influenza virus strain with ultraviolet light in such an irradiation dose that the first influenza virus strain has initial infection ability and loses or is reduced in virus growth potential; 2) a step of infecting a host with the first influenza virus strain and the second influenza virus strain; 3) a step of culturing the host infected with the first influenza virus strain and the second influenza virus strain, to obtain culture product; 4) a step of inactivating influenza virus strain having an antigenic protein of the second influenza virus strain in the culture product obtained in the step 3); and 5) a step of collecting reassortant influenza virus after the step 4).
Abstract:
Provided is a production method for reassortant influenza virus having genome segments of two or more kinds of influenza virus in the case where an antigenic strain and donor strain have similar antigenicities. The production method makes use of the first influenza virus containing an antigenic protein, the second influenza virus having an antigenic protein having antigenicity similar to that of the strain, and the third influenza virus having an antigenic protein having antigenicity different from that of the strain, and includes the steps of: coculturing the strain and the strain by infecting a host therewith, to produce reassortant influenza viruses; selecting influenza virus having the antigenic protein from the viruses; then coculturing the strain and the selected strain by infecting a host therewith; and selecting influenza virus having the antigenic protein from reassortant influenza viruses produced from the strain and the strain.
Abstract:
The present invention provides a substance which is useful as a carrier for protein purification. Since an aluminum phosphate compound that is obtained by a method for producing an aluminum phosphate compound, which comprises a step for obtaining a mixture that contains an aluminum phosphate compound by mixing an aqueous solution A containing a phosphate ion with an aqueous solution B containing an aluminum ion and a sulfate ion, and at least one of a potassium ion or a magnesium ion, exhibits excellent protein adsorption properties, this aluminum phosphate compound is useful as a carrier for protein purification.
Abstract:
The invention provides agents that promote or inhibit neurite elongation comprising as an active ingredient an antibody that recognizes a varicella-zoster virus immediate-early protein and cross-reacts with a brain-derived neurotrophic factor. The invention also provides methods of utilizing such agents to prevent or treat a nervous disease or a disease with nerve hypersensitivity caused by a condition selected from the group consisting of postherpetic neuralgia, chronic pains, experience-dependent social aversion and stress.