Improved methods for the production of non-covalently...

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A61K 39/385 (2006.01) A23J 1/00 (2006.01) A61K 9/127 (2006.01) A61K 39/095 (2006.01) A61K 39/112 (2006.01) A61K 39/116 (2006.01) C07K 14/195 (2006.01) C07K 14/22 (2006.01) C07K 14/25 (2006.01) A61K 9/00 (2006.01) A61K 39/00 (2006.01)

Patent

CA 2232410

A method for preparing multivalent proteosome-amphiphilic determinant vaccines suitable for parenteral or mucosal administration using diafiltration or ultrafiltration technology. The amphiphilic determinants include lipopolysaccharides from gram negative bacteria, e.g. S. flexneri, P. shigelloides and S. sonnei. Proteosomes are obtained from group B type 2b meningococci. The active proteosome-amphiphilic determinant complexes (non- covalently complexes) of the vaccine are formed using diafiltration or ultrafiltration to remove the detergent. The use of diafiltration or ultrafiltration decreases processing time and the opportunity for contamination and further permits the use of ambient temperature and efficient scale-up. In addition, the process permits the reliable and continuous monitoring of the dialysate which enhances the efficiency of the entire process. The time of dialysis for production of a lot of vaccine is reduced from > 7-10 days to less than 72 hours and usually less than 48 or 24 hours. The use of the process optimizes the presence of each antigenic component in the preparation of multivalent vaccines.

L'invention concerne un procédé pour préparer des vaccins polyvalents à protéosomes-déterminants amphiphiles, convenant à une administration parentérale ou mucosale par diafiltration ou ultrafiltration. Les déterminants amphiphiles comprennent des lipopolysaccharides de bactéries Gram négatif, par exemple de S. flexneri, P. shigelloides et S. sonnei. Les protéosomes sont obtenus à partir des méningocoques du type 2b du groupe B. Les complexes protéosomes actifs-déterminants amphiphiles (complexes non covalents) du vaccin sont obtenus par diafiltration ou par ultrafiltration, pour éliminer le détergent. L'utilisation de la diafiltration ou de l'ultrafiltration diminue le temps de traitement et les risques de contamination. Egalement, on peut travailler à température ambiante et on peut facilement augmenter la taille des installations. En plus, le procédé permet une surveillance continue et sûre du dialysat, ce qui améliore l'efficacité de tout le procédé. La durée de la dialyse pour la production d'un lot de vaccin passe de plus de 7-10 jours à moins de 72 heures et habituellement moins de 48 ou 24 heures. L'utilisation du procédé optimise la présence de chaque composant antigénique dans la préparation de vaccins polyvalents.

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