Synthetic vaccines comprising polyhydroxypolymer carriers

A - Human Necessities – 61 – K

Patent

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Details

A61K 39/385 (2006.01) A61K 39/00 (2006.01) A61K 39/10 (2006.01) A61K 47/48 (2006.01)

Patent

CA 2440197

The present invention provides for novel immungens that are comprised of an activated polyhydroxypolymer backbone to which is attached 2 separate antigenic determinants. The 1st antigenic determinant includes a B-cell or CTL epitope and the 2nd antigenic determinant includes a T-helper epitope. In preferred embodiments, the antigenic determinants are derived from different molecules and species. Exemplary immunogens of the invention are constituted of a linear tresyl-activated dextran backbone to which is coupled B-cell or CTL epitopes of an antigen and to which is also coupled universal T-helper epitopes. Also disclosed are immunogenic compositions comprising the immunogens, methods of immunisation and a mehtod for identification of suitable immunogens of the invention.

L'invention concerne de nouveaux immunogènes constitués d'un squelette polyhydroxypolymère activé auquel sont fixés 2 déterminants antigènes séparés. Le premier déterminant antigène comprend une cellule B ou un épitope CTL et le second déterminant antigène un épitope T auxiliaire. Dans des modes de réalisation préférés, les déterminants antigènes sont dérivés de molécules et d'espèces différentes. Des immunogènes exemplaires selon l'invention sont constitués d'un squelette dextrane linéaire activé par trésyl auquel sont couplés une celle B ou des épitopes CTL d'un antigène, ainsi que des épitopes T auxiliaires universels. L'invention concerne également des compositions immunogènes comprenant lesdits immunogènes, ainsi que des procédés d'immunisation et un procédé d'identification d'immunogènes appropriés.

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