Chimeric polypeptides of serum albumin and uses related thereto

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/62 (2006.01) A61K 38/17 (2006.01) C07K 14/705 (2006.01) C07K 14/71 (2006.01) C07K 14/715 (2006.01) C07K 14/72 (2006.01) C07K 14/76 (2006.01) C07K 14/765 (2006.01) C07K 14/78 (2006.01) C12N 9/12 (2006.01) C12N 9/68 (2006.01) A61K 38/00 (2006.01)

Patent

CA 2376641

The present invention relates to chimeric polypeptides in which a serum albumin protein has been altered to include one or more biologically active heterologous peptide sequences. The chimeric polypeptides may exhibit therapeutic activity related to the heterologous peptide sequences coupled with the improved serum half-lives derived from the serum albumin protein fragments. Heterologous peptide sequences may be chosen to promote any biological effect, including angiogenesis inhibition, antitumor activity, and induction of apoptosis. The therapeutic effect may be achieved by direct administration of the chimeric polypeptide, or by transfecting cells with a vector including a nucleic acid encoding such a chimeric polypeptide.

La présente invention concerne des polypeptides chimères constitués d'une protéine d'albumine sérique altérée par l'inclusion d'une ou de plusieurs séquences de peptides hétérologues biologiquement actifs. Les polypeptides chimères peuvent montrer une activité thérapeutique se rapportant aux séquences peptidiques hétérologues couplées avec les demi-vies sériques améliorées dérivées des fragments de protéine d'albumine sérique. On peut choisir des séquences de peptide hétérologue afin de promouvoir un quelconque effet biologique, y compris une inhibition de l'angiogénèse, une activité antitumorale et une induction d'apoptose. Il est possible d'obtenir l'effet thérapeutique par administration directe du polypeptide chimère, ou par transfection de cellules au moyen d'un vecteur contenant un acide nucléique codant pour un tel polypeptide chimère.

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