The human c3b/c4b receptor (cr1)

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/62 (2006.01) A61K 38/16 (2006.01) A61K 38/36 (2006.01) A61K 38/43 (2006.01) A61K 38/55 (2006.01) C07K 19/00 (2006.01) C12N 15/12 (2006.01) C07K 14/745 (2006.01)

Patent

CA 2067744

The present invention relates to the C3b/C4b receptor (CR1) gene, its encoded protein, and CR1 nucleic acid sequences and fragments thereof comprising 70 nucleotides and their encoded peptides or proteins comprising 24 amino acids. The invention further provides for the expression of the CR1 protein and fragments thereof. The genes and proteins of the invention have uses in diagnosis and therapy of disorders involving complement activity, and various embodiments of the present invention include the cloning, nucleotide sequence and deduced amino acid sequence of a full-length CR1 cDNA and fragments thereof. The expression of the CR1 protein and fragments thereof is also described as is the expression of a secreted CR1 molecule lacking a transmembrane region which is useful in reducing damage caused by inflammation and in reducing myocardial infarct size and preventing reperfusion injury.

L'invention concerne le gène de récepteur (CR1) de C3b/C4b, sa protéine codée, ainsi que des séquences d'acides nucléiques de CR1 et des fragments de celles-ci comprenant 70 nucléotides, ainsi que leurs peptides ou protéines codées comprenant 24 acides aminés. L'invention concerne également l'expression de la protéine CR1 ainsi que de fragments de celle-ci. Les gènes et les protéines de l'invention présentent des utilisations dans le diagnostic et la thérapie de troubles appliquant une activité du complément, et divers modes de réalisation de l'invention comprennent le clonage, une séquence de nucléotides ainsi qu'une séquence d'acides aminés déduite d'un ADN complémentaire de CR1 de longueur intégrale ainsi que ses fragments. L'expression de la protéine CR1 et de fragments de celle-ci est également décrite, ainsi que l'expression d'une molécule de CR1 secrétée à laquelle il manque une région de transmembrane, laquelle est utile pour réduire la détérioration provoquée par l'inflammation, et pour réduire la taille de l'infarctus du myocarde et pour prévenir les blessures de reperfusion.

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