HUMANISED ANTIBODY TO BETA AMYLOID Russian patent published in 2013 - IPC C07K16/18 C12N15/13 C12N15/63 G01N33/53 A61K39/395 A61P25/28 

FIELD: biotechnologies.

SUBSTANCE: versions of an antibody or its fragment, which are specific in relation to β-amyloid protein, are proposed. Each version is characterised by the fact that it includes H- and L-chains, or areas VH and VL, each of which contains three corresponding CDR. The following is described: polypeptide VL, polypeptide VH, as well as coding nucleic acid, expression vector containing it and a cell carrying the vector, which are used for obtaining an antibody or its functional fragment. The following is proposed; a test kit, versions of pharmaceutical composition, a mixture to be used as a medicine based on the antibody or its functional fragment. Versions of the method used for production of an antibody are described: using a cell, nucleic acid or a vector. A composite preparation method, as well as an in vitro amyloid disease diagnostics method, a method for determination of a degree of loading with in vitro amyloidogenic patches, a method for curing or relief of actions of amyloid disease, which use an antibody or its functional fragment, are described. Inventions can be used in therapy and diagnostics of Alzheimer disease and other enlisted amyloid diseases.

EFFECT: proposed inventions provide new antibodies that bind the epitope contained in the area of 12-23 protein αβ_1-42; with that, residues 15-20 have a fundamental importance.

44 cl, 18 dwg, 9 tbl, 16 ex