Peptide conjugate compositions and methods for the...

A - Human Necessities – 61 – K

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A61K 39/00 (2006.01)

Patent

CA 2607868

The invention provides compositions and methods for the treatment of diseases associated with amyloid deposits of A.beta. in the brain of a patient, such as Alzheimer~s disease. Such methods entail administering an immunogenic fragment of A.beta., lacking a T-cell epitope, capable of inducing a beneficial immune response in the form of antibodies to A.beta.. In another aspect, the immunogenic fragment of A.beta. is capable of elevating plasma A.beta. levels. The immunogenic fragments comprise linear or multivalent peptides of A.beta.. Pharmaceutical compositions comprise the immunogenic fragment chemically linked to a carrier molecule which may be administered with an adjuvant.

L'invention concerne des compositions et des méthodes destinées au traitement de maladies associées aux dépôts amyloïdes d'A.beta. dans le cerveau d'un patient, telles que la maladie d'Alzheimer. Ces méthodes consistent à administrer un fragment immunogénique d'A.beta., sans épitope de lymphocyte T, capable d'induire une réponse immunitaire bénéfique sous forme d'anticorps contre l'A.beta.. Dans un autre aspect, le fragment immunogénique de l'A.beta. est capable d'augmenter les taux plasmiques d'A.beta.. Les fragments immunogéniques comprennent des peptides linéaires ou multivalents d'A.beta.. L'invention concerne également des compositions pharmaceutiques comprenant le fragment immunogénique lié par voie chimique à une molécule porteuse, pouvant être administrées avec un adjuvant.

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