Binding molecules

C - Chemistry – Metallurgy – 07 – K

Patent

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Details

C07K 16/00 (2006.01)

Patent

CA 2637945

The present invention relates to the manufacture of mono, di and multivalent polypeptide binding complexes, also mono, di or multispecific polypeptide binding complexes and uses thereof. The invention also relates to the manufacture and use of a diverse repertoire of antigen specific VH binding domains derived from phage display libraries, transgenic animals or natural sources. Preferably the VH binding domains and the dimerisation domains comprise human sequences. The polypeptide binding complexes comprise homo or heterodimerisation domains with four antigen binding [VH ] domains fused at the amino and carboxyl termini of the dimerisation domains preferably using natural hinge or linker peptides. Where the polypeptide binding complexes lack CH2-CH3 effector functions they are preferably less than 120kDa in size. Routes of manufacture are described herein.

La présente invention concerne la fabrication de complexes de liaison mono-, di- et multivalents se fixant aux polypeptides et de complexes de liaison mono-, di- ou multispécifiques se fixant aux polypeptides, ainsi que leurs utilisations. L~invention concerne également la fabrication et l~utilisation d~un répertoire divers de domaines de liaison VH spécifiques à des antigènes provenant de banques sur phages, d~animaux transgéniques ou de sources naturelles. Les domaines de liaison VH et les domaines de dimérisation comprennent de préférence des séquences humaines. Les complexes de liaison aux polypeptides comprennent des domaines d~homo- ou d~hétérodimérisation avec quatre domaines [VH] de liaison aux antigènes fusionnés aux terminaisons amino et carboxyle desdits domaines de dimérisation, en utilisant de préférence des peptides charnières ou de liaison d~origine naturelle. Lorsque les complexes de liaison aux polypeptides manquent de fonctions effectrices CH2-CH3, ils ont un poids moléculaire de préférence inférieur à 120 kDa. L~invention concerne également des voies de préparation.

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