Document Type

Patent

Patent Number

US Patent 6,887,483

Patent agency

United States Patent and Trademark Office

Publication Date

5-3-2005

Assignee

University of Iowa Research Foundation (Iowa City, IA, US) ; The Regents of the University of California (Oakland, CA, US)

Application Number

08/565,943

Date Filed

1995-12-01

Total Pages

17 pages

Abstract

A method is provided for identifying, isolating, and producing htrB mutants of gram-negative bacterial pathogens. The method comprises mutating the htrB gene of a gram-negative bacterial pathogen so that there is a lack of a functional HtrB protein, resulting in a mutant that lacks one or more secondary acyl chains and displays substantially reduced toxicity as compared to the wild type strain. Also, the present invention provides methods for using a vaccine formulation containing the htrB mutant, or the endotoxin isolated therefrom, to immunize an individual against infections caused by gram-negative bacterial pathogens by administering a prophylactically effective amount of the vaccine formulation.

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URL

https://ir.uiowa.edu/patents/375