Fc-VERSIONS WITH CHANGED BINDING WITH FcRn Russian patent published in 2011 - IPC C07K16/18 C07K16/46 

Abstract RU 2412200 C2

FIELD: medicine.

SUBSTANCE: claimed are versions of polypeptides with Fc-segment from IgG, which possess increased binding FcRn due to introduction of mutation 308C, 308F, 308W, 308Y or modified binding with introduction of mutation 252Y/308F, 257L/308F, 257L/308Y, 257N/308Y, 279Q/308F, 279Y/308F, ^281S/308F, ^A281S/308Y, 284E/308F, 298A/308F/333A/334A, 308F/332E, 308F/311V, 308F/G385H, 308F/428L, and 308F/434Y. Described is antibody with said mutations in Fc region, as well as application of said Fc regions for obtaining fused protein. Application of the invention provides novel Fc-versions with modified FcRn binding.

EFFECT: possibility of application in medicine for obtaining various constructions, with prolonged time of preservation in blood serum in vivo or, vice versa, in case of therapy with application of radioactive medications, with reduced time of preservation in blood serum in vivo.

14 cl, 44 dwg, 4 ex

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RU 2 412 200 C2

Authors

Chemberlen Aaron Kit

Disdzharlejs Dzhon R.

Karki Sher Bakhadur

Lazar Gregori Alan

Fil'Metter Just

Joder Shon Kristofer

Dates

2011-02-20Published

2005-11-14Filed