Modified meningococcal group B polysaccharide for conjugate vacc

Chemistry: natural resins or derivatives; peptides or proteins; – Proteins – i.e. – more than 100 amino acid residues – Glycoprotein – e.g. – mucins – proteoglycans – etc.

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530350, 530403, 530405, 530806, 530825, 424 88, 424 92, 536 11, 514 23, C07K 1504, C07K 39095, C07K 39108, C07H 100

Patent

active

047271361

ABSTRACT:
The group B polysaccharide of Neisseria meningitidis is chemically modified to enhance the immune response thereto, thereby providing cross-reactive antibodies of high affinity. The N-acetyl group of the sialic acid residues of the polysaccharide has been substituted by the N-propionyl group, and this modified antigen then conjugated to a physiologically-acceptable protein such as tetanus toxoid. This conjugate vaccine has been found to raise high titers of high affinity group B IgG antibodies and would be useful against meningitis caused by group B N. meningitidis or by E. coli KI organisms.

REFERENCES:
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patent: 4356170 (1982-10-01), Jennings et al.
patent: 4545985 (1985-10-01), Pastan et al.
Jennings et al, I. Immunol., 134, 1985, pp. 2651-2657.
Lifely et al, Carbohydrate Res., 94, 1981, pp. 193-203.
Isai et al, J. Bacteriology, 146, 1981, pp. 69-78.
Frasch, Semin. Infert. Dis., 2, 1979, pp. 304-337.

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