Preparation and uses of los-depleted outer membrane proteins of gram-negative cocci

摘要

Described herein is a method for removing toxic lipooligosaccharide (LOS) from outer membranes of Gram-negative cocci, such as Neisseria meningitidis.LOS-depleted outer membranes and LOS-depleted soluble outer membrane proteins can be prepared, which are able to elicit bactericidal antibodies against homologous strains of bacteria. Vaccines and other uses of the preparations are further described.