Antibody and inhibitor, and transfection method or kit using...

C - Chemistry – Metallurgy – 07 – K

Patent

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Details

C07K 16/28 (2006.01) C12N 15/64 (2006.01)

Patent

CA 2489316

It is intended to provide a monoclonal antibody binding specifically to human Toll-like receptor 3. Also, use is made of an inhibitor inhibiting the production of type I interferon by cells expressing a Toll-like receptor recognizing a double-stranded RNA and producing type I interferon, which contains an antibody binding to a Toll-like receptor, in particular, a monoclonal antibody against human Toll-like receptor 3. In the state of inhibiting the production of type I interferon with the use of the above inhibitor, the cells are infected with a recombinant RNA virus vector having a target gene inserted thereinto and thus transformed. By inhibiting the production of type I interferon induced by the virus double-stranded RNA as described above, it becomes possible to provide an inhibitor capable of regulating an immune response to a specific virus, a transformation method whereby a transformation efficiency can be elevated without elevating the infection efficiency with a virus vector, and a transformation kit.

L'invention concerne un anticorps monoclonal se liant spécifiquement au récepteur 3 humain de type Toll. Cette invention a également trait à un inhibiteur servant à inhiber la production de l'interféron de type I par des cellules exprimant un récepteur de type Toll qui reconnaît un ARN à double brin et qui produit un interféron de type I renfermant un anticorps se liant à un récepteur de type Toll, notamment, un anticorps monoclonal du récepteur 3 de type Toll. Lors de l'inhibition de la production de l'interféron de type I au moyen de l'inhibiteur susmentionné, les cellules sont infectées avec un vecteur du virus d'ARN recombinant possédant un gène cible qui y est introduit et donc transformé. L'inhibition susmentionnée de la production de l'interféron de type I induite par l'ARN à double brin du virus, permet d'engendrer un inhibiteur capable de réguler une réponse immune vis-à-vis du virus spécifique, une méthode de transformation, dont l'efficacité peut être accrue sans augmenter l'efficacité de l'infection avec un vecteur de virus, et un kit de transformation.

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