IMMUNOTHERAPEUTIC AGENT COMBINED WITH CD37, AND ITS COMBINATION WITH BIFUNCTIONAL CHEMOTHERAPEUTIC AGENT Russian patent published in 2014 - IPC C07K16/28 C12P21/08 A61K39/395 A61P19/02 

FIELD: biotechnologies.

SUBSTANCE: invention proposes a molecule that is specifically combined with CD37 and that contains the following from N-end to C-end: (a) CD37-specific scFV containing the following from N-end to C-end: (i) humanized variable region of a heavy chain, which contains CDR1 GYNMN, CDR2 NIDPYYGGTTYNRKFKG and CDR3 SVGPFDS, (ii) linker having 5 to 30 aminoacids inclusive, and (iii) humanized variable region of an easy chain containing CDR1 RASENVYSYLA, CDR2 FAKTLAE and CDR3 QHHSDNPWT; (b) a link region; and (c) immunoglobulin regions CH2 and CH3. The following is described: The following is described: nucleic acid coding the above binding molecule; an expression vector containing the above nucleic acid; and a host cell for production of a binding molecule, which contains the above vector. The invention proposes use of the above binding molecule to obtain a medicinal agent to reduce the number of B-cells, treatment of a disease or an illness, which is related to abnormal activity of B-cells. Besides, the invention describes compositions containing effective number of the above binding molecule to reduce the number of B-cells, treatment of a disease or an illness related to abnormal activity of B-cells.

EFFECT: invention allows obtaining scFV molecule binding CD37, having orientation of variable regions VHVL, with high yield and efficiency in comparison to scFV molecule against CD37, which has orientation of variable regions VLVH.

31 cl, 17 dwg, 13 tbl, 12 ex