Reassortant influenza virus production method

    公开(公告)号:US11633469B2

    公开(公告)日:2023-04-25

    申请号:US16316186

    申请日:2017-07-11

    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).

    METHOD FOR GRADUAL CONSTRUCTION OF REASSORTANT INFLUENZA VIRUS

    公开(公告)号:US20210130793A1

    公开(公告)日:2021-05-06

    申请号:US16639639

    申请日:2018-08-23

    Inventor: Takao Fujimoto

    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.

    ALUMINUM PHOSPHATE COMPOUND
    25.
    发明申请

    公开(公告)号:US20210107789A1

    公开(公告)日:2021-04-15

    申请号:US17057007

    申请日:2019-05-22

    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.

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