Beta-amyloid-analogue - t-cell epitop vaccine

A - Human Necessities – 61 – K

Patent

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Details

A61K 39/00 (2006.01) A61K 39/10 (2006.01) A61K 39/385 (2006.01) A61P 25/28 (2006.01) C07K 14/47 (2006.01)

Patent

CA 2457140

Disclosed are novel methods for combatting diseases characterized by deposition of amyloid. The methods generally rely on immunization against amyloid precursor protein (APP) or beta amyloid (A.beta.). Immunization is preferably effected by administration of analogues of autologous APP or A.beta., said analogues being capable of inducing antibody production against the autologous amyloidogenic polypeptides. Especially preferred as an immunogen is autologous A.beta. which has been modified by introduction of one single or a few foreign, immunodominant and promiscuous T-cell epitopes. Also disclosed are nucleic acid vaccination against APP or A.beta. and vaccination using live vaccines as well as methods and means useful for the vaccination. Such methods and means include methods for the preparation of analogues and pharmaceutical formulations, as well as nucleic acid fragments, vectors, transformed cells, polypeptides and pharmaceutical formulations.

L'invention concerne de nouvelles méthodes permettant de lutter contre les maladies caractérisées par des dépôts d'amyloïde. Ces méthodes reposent de manière générale sur une immunisation contre les protéines amyloïdes précurseur (APP) ou les bêta-amyloïdes (A.szlig.). On effectue de préférence cette immunisation par l'administration d'analogues de APP et de A.szlig. autologues, ces analogues étant capables d'induire la production d'anticorps contre des polypeptides amyloïdogènes autologues. L'immunogène préféré est une protéine A.szlig. autologue qui a été modifiée par l'introduction d'un seul ou de plusieurs épitopes de lymphocytes T étrangers, immunodominants et ubiquistes. L'invention concerne également la vaccination à base d'acide nucléique contre APP et de A.szlig. et la vaccination à base de vaccins vivants ainsi que des procédés et des moyens utiles pour ladite vaccination. Ces procédés et ces moyens comprennent des méthodes permettant de préparer des analogues et des formulations pharmaceutiques, ainsi que des fragments d'acide nucléique, des vecteurs, des cellules transformées, des polypeptides et des formulations pharmaceutiques.

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