Monoclonal antibodies to the clfa protein and method of use...

C - Chemistry – Metallurgy – 07 – K

Patent

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Details

C07K 16/12 (2006.01) A61K 38/16 (2006.01) A61K 39/085 (2006.01) A61K 39/395 (2006.01) A61P 31/04 (2006.01) C07K 14/31 (2006.01) G01N 33/536 (2006.01) G01N 33/569 (2006.01)

Patent

CA 2434762

Monoclonal antibodies which can bind to the ClfA protein and which are generated from binding subdomains or active fragments of the ClfA protein from Staphylococcus aureus, including the active fragments proteins from its fibrinogen binding domain such as Clf40 protein, the Clf33 protein, or ClfA N3, are provided which can be useful in the treatment and protection against infection from staphylococcal bacteria such as Staphylococcus aureus. In addition, medical instruments can be treated using the monoclonal antibodies of the invention in order to reduce or eliminate the possibility of their becoming infected or further spreading the infection. In particular, the antibodies of the present invention are advantageous because they can prevent adherence of the bacteria to host cells by impairing or inhibiting the ability of S. aureus ClfA to bind to fibrinogen or fibrin, and thus can be utilized in methods or treating or preventing staphylococcal inventions.

L'invention concerne des anticorps monoclonaux pouvant se lier à la protéine ClfA et produits à partir de sous domaines de liaison ou de fragments actifs de ladite protéine provenant du Staphylococcus aureus, y compris des fragments actifs de protéines de son domaine de liaison fibrinogène, par exemple les protéines Clf40, Clf33, ou ClfA N3, que l'on peut utiliser pour traiter et protéger contre des infections causées par des bactéries staphylococciques telles que le Staphylococcus aureus. En outre, des instruments médicaux peuvent être traités par lesdits anticorps monoclonaux afin de réduire ou d'éliminer la possibilité qu'ils soient infectés ou qu'ils diffusent davantage l'infection. Plus précisément, l'avantage desdits anticorps réside dans le fait qu'ils peuvent empêcher l'adhérence des bactéries dans des cellules hôtes en endommageant ou en inhibant l'aptitude de la protéine ClfA du S. aureus de se lier au fibrinogène ou à la fibrine, ce qui permet de les utiliser dans des procédés de traitement ou de prévention d'infections staphylococciques.

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