Genetic detoxification of pertussis toxin
US5085862A · kind A · utility
54Cited by
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16Claims
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Assignee
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Key dates
| Filing date | Nov 23, 1988 |
| Grant date | Feb 4, 1992 |
| Priority date | — |
| Expiry date | Nov 23, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S424/832
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A new method is described for the preparation of a safe, immunogenic and efficacious vaccine for protection against the disease pertussis. In development of this vaccine, specific functional sites of pertussis toxin have been identified, and using this information, defined mutant holotoxins have been produced by site directed mutagenesis of the toxin gene. A number of these toxin analogues are detoxified, retain an immunodominant S1 epitope, are immunoganic and are protective in the standard pertussis vaccine potency test in mice.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.