IMPROVED AMINO ACID SEQUENCES AGAINST IL-6R AND POLYPEPTIDES WHICH CONTAIN THEREOF FOR TREATMENT OF IL-6R ASSOCIATED DISEASES AND DISORDERS Russian patent published in 2015 - IPC C07K16/28 C07K7/08 C07K19/00 A61K39/395 A61P37/00 A61P35/00 A61P19/00 

FIELD: medicine, pharmaceutics.

SUBSTANCE: invention relates to field of biochemistry, in particular to single variable domain, aimed against IL-6R, to polypeptide and construction, directed against IL-6R, containing said single variable domain, as well as to methods of obtaining them. Disclosed are nucleic acids, coding said single variable domain, polypeptide and construction, as well as genetic constructions, containing said nucleic acids. Described are host cells and host organisms, containing said nucleic acids. Invention also deals with composition for blocking interaction of IL-6/IL-6R, containing effective quantity of described single variable domain, polypeptide, construction, nucleic acid or genetic construction. Also disclosed is method of prevention and/or treatment of at least one of diseases or disorders, associated with IL-6, IL-6R, complex IL-6/IL-6R and/or signal pathways, in which IL-6, IL-6R or complex IL-6/IL-6R is involved and/or biological functions and reactions, win which IL-6, IL-6R or complex IL-6/IL-6R takes part with application of described single variable domain, polypeptide, construction or composition.

EFFECT: invention makes it possible to block interaction of IL-6/IL-6R effectively with increased affinity and biological activity.

25 cl, 70 dwg, 56 tbl, 61 ex