Methods for the treatment of an infectious bacterial disease...

C - Chemistry – Metallurgy – 07 – K

Patent

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Details

C07K 16/12 (2006.01) A61K 39/395 (2006.01) A61K 39/40 (2006.01) A61P 31/04 (2006.01) C07K 16/44 (2006.01)

Patent

CA 2495725

The present invention relates to methods for the control of virulence of infectious bacteria by modulating the extra-cellular concentration of bacterial cell signalling molecules. Derivatives of cell signalling molecules are conjugated to suitable carrier proteins and used to isolate high affinity receptors recognising the native signal molecule(s). By binding to signalling molecules, the receptors reduce and maintain extra-cellular concentrations of signal molecules below the threshold level that would otherwise result in certain opportunistic pathogens adopting a virulent form, and can transform virulent organisms to non-virulent states. These receptors have applications for the treatment of individuals with susceptibility to infection, the treatment of patients with existing infections, in disease monitoring and management, and in related applications where the host for infection is an animal or plant.

L'invention concerne des méthodes pour réguler la virulence de bactéries infectieuses en modulant la concentration extra-cellulaire de molécules signalant la présence d'une cellule bactérienne. Des dérivés de molécules signalant la présence d'une cellule sont combinés à des protéines porteuses appropriées et utilisés pour isoler des récepteurs de haute sensibilité reconnaissant la/les molécule(s) signal endogène(s). En se liant aux molécules de signalisation, ces récepteurs diminuent les concentrations extra-cellulaires de molécules-signal et les maintiennent en-dessous du seuil qui se traduirait sinon par des états pathogènes opportunistes prenant une forme virulente, les organismes virulents devenant ainsi non-virulents. Lesdits récepteurs peuvent servir au traitement de personnes sensibles aux infections, au traitement de patients déjà atteints par une infection, à la surveillance et à la gestion de maladies et dans des applications associées, lorsque l'hôte d'une infection est un animal ou une plante.

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