Model animal with onset of collagen-induced arthritis

A - Human Necessities – 01 – K

Patent

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Details

A01K 67/027 (2006.01) A61K 45/00 (2006.01) C07K 14/735 (2006.01) C12N 15/00 (2006.01) C12N 15/85 (2006.01) G01N 33/15 (2006.01) G01N 33/50 (2006.01)

Patent

CA 2395364

The present invention provides a model animal with favorite onset of rheumatoid arthritis wherein the severity of arthritis reaches the maximum level and its onset ratio is a hundred percent, and a screening method of a remedy for rheumatoid arthritis by using the model animal. A mouse whose function of immunoglobulin Fc.gamma. receptor IIB gene is deficient on its chromosome and a wild-type collagen-induced arthritis-susceptible DBA/1J mouse are backcrossed six times or more, and a model mouse with favorite onset of rheumatoid arthritis is constructed. This model mouse with favorite onset of rheumatoid arthritis is immunized with bovine joint-origin type II collagen to develop collagen-induced arthritis.

L'invention concerne un modèle animal prédisposé à l'apparition d'arthrite rhumatoïde présentant le niveau maximum de gravité de l'arthrite et un taux d'apparition de 100 %. L'invention concerne également un procédé de sélection d'un remède contre l'arthrite rhumatoïde faisant appel au dit modèle. Une souris, dont la fonction génique présente une déficience du récepteur IIB Fc gamma de l'immunoglobuline sur son chromosome, est rétrocroisée 6 fois ou plus avec une souris DBA/1J présentant l'apparition d'arthrite collagénique de type sauvage pour réaliser un modèle souris prédisposé à l'apparition d'arthrite rhumatoïde. Immunisé à l'aide du collagène du type II d'origine mixte bovine, ce modèle souris souffre de l'apparition d'arthrite collagénique.

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