Peptides and assays for the diagnosis of lyme disease and...

C - Chemistry – Metallurgy – 07 – K

Patent

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Details

C07K 14/20 (2006.01) A61K 38/16 (2006.01) A61K 39/02 (2006.01) C07K 14/00 (2006.01) C07K 19/00 (2006.01) G01N 33/543 (2006.01) G01N 33/569 (2006.01) A61K 38/00 (2006.01) A61K 39/00 (2006.01)

Patent

CA 2370493

A peptide consisting of an invariable 26-amino-acid-long region, named IR6, which is antigenically conserved among strains and species of the B. burgdorferi sensu lato complex, and immunodominant in both human and nonhuman primate hosts is described. This peptide is characterized by the sequence MKKDDQIAAAMVLRGMAKDGQFALKD [SEQ ID NO: 1]. This peptide is useful for rapid and specific diagnosis of Lyme disease, as are proteins containing this peptide and nucleic acid sequences encoding this peptide and these proteins. Also provided is a novel ELISA, which is characterized by high sensitivity and specificity.

La présente invention a pour objet un peptide constitué d'une région invariable de 26 acides aminés nommée IR6, qui est conservée de manière antigénique parmi des souches et des espèces du complexe B. burgdorferi sensu lato, et est immunodominante à la fois chez des hôtes primates humains et non humains. Ce peptide est caractérisé par la séquence MKKDDQIAAAMVLRGMAKDGQFALKD ¬SEQ ID NO: 1|. Il s'avère utile au diagnostic rapide et spécifique de la maladie de Lyme, de même que les protéines le contenant et les séquences d'acides nucléiques codant ce peptide ou ces protéines. La présente invention a également pour objet une nouvelle épreuve ELISA qui est caractérisée par une sensibilité et une spécificité élevées.

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