31.
    发明专利
    未知

    公开(公告)号:FR2540516B1

    公开(公告)日:1987-08-07

    申请号:FR8401863

    申请日:1984-02-07

    Applicant: SCLAVO SPA

    Inventor: RAPPUOLI RINO

    Abstract: Process for the production of a protein correlated with the diphtheric toxin which comprises culturing in a liquid nutrient medium having a concentration of iron ions of from 0.05 mu g/ml to 0.5 mu g/ml, at a temperature of from 30 DEG C. to 40 DEG C., in a neutral culturing environment and under aerobic conditions, a microorganism belonging to the Corynebacterium diphtheriae genus with two mutant phages encoding the protein correlated with the diphtheric toxin integrated in a nontandem mode in their chromosomes.

    PROCESS FOR PRODUCING PROTEINS CORRELATED WITH THE DIPHTHERIC TOXIN

    公开(公告)号:CA1212642A

    公开(公告)日:1986-10-14

    申请号:CA446410

    申请日:1984-01-31

    Applicant: SCLAVO SPA

    Inventor: RAPPUOLI RINO

    Abstract: PROCESS FOR PRODUCING PROTEINS CORRELATED WITH THE DIPHTHERIC TOXIN Process for the production of a protein correlated with the diphtheric toxin which comprises culturing in a liquid nutrient medium having a concentration of iron ions of from 0.05 .mu.g/ml to 0.5 .mu.g/ml, at a temperature of from 30.degree.C to 40.degree.C, in a neutral culturing environment and under aerobic conditions, a microorganism belonging to the Corynebacterium diphtheriae genus with two mutant phages encoding the protein correlated with the diphtheric toxin integrated in a nontandem mode in their chromosomes.

    ACELLULAR ANTI-PERTUSSIS VACCINES
    40.
    发明专利

    公开(公告)号:CA2045071A1

    公开(公告)日:1991-12-22

    申请号:CA2045071

    申请日:1991-06-20

    Applicant: SCLAVO SPA

    Abstract: Novel acellular anti-pertussis vaccines are described, which comprises a non-toxic double mutant of pertussis toxin (PT), filamentous haemagglutinin (FHA) and the 69 kilodaltons protein (69Kd) taken alone or in combination with the diphtheria and tetanus anatoxin. The completely non-toxic double mutant of the PT is characterized by the fact that is comprises in the amino acid sequence of the S1 subunit the substitution of Glu 129 and of one of any other amino acid of the subunit, whose substitution brings about a decrease in toxicity, by natural amino acids. Moreover there are described purification methods for, and the characterisation of the FHA and the 69 Kd protein expressed by transformed B. pertussis W28-9K/129G strains, which produce the PT double mutant and by transformed B. pertussis W28- Tox which do not produce the PT. These proteins are particularly suitable for preparing safer and more immunogenic acellular anti-pertussis vaccine.

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