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    • 98. 发明专利
    • Conjugate of biologically active polypeptide monomer and immunoglobulin fc fragment with reduced receptor-mediated clearance, and the method for preparing the same
    • NZ716251A
    • 2020-12-18
    • NZ71625114
    • 2014-07-14
    • HANMI PHARM IND CO LTD
    • LIM HYUNG KYUBAE SUNG MINKWON SE CHANGJUNG SUNG YOUBPARK SUNG HEEKIM MIN YOUNG
    • A61K38/26A61K39/395
    • The present invention relates to compositions of GLP1-1 Fc conjugates or insulin Fc- conjugates at a ratio of at least 19:1 monomers to dimers of fusion proteins that have reduced receptor mediated internalization or receptor medicated clearance that results in an increased serum half-life. Wherein the physiologically active polypeptide, used in the conjugate, is selected from the group consisting of glucagon-like peptide-1 (GLP-1), glucagon-like peptide-1(GLP-1) agonist, glucagon, oxyntomodulin, insulin, and derivatives thereof. The present invention relates to: a composition containing a conjugate having a bioactive polypeptide linked to an immunoglobulin Fc fragment, wherein the composition is a sustained pharmaceutical composition containing a monomer conjugate having one molecule of bioactive polypeptide linked to one immunoglobulin Fc fragment, and optionally a multimer conjugate having two or more molecules of identical bioactive polypeptide linked to one immunoglobulin Fc fragment, wherein the molar ratio of the monomer conjugate to the multimer conjugate in the composition is 19 or greater; a bioactive polypeptide monomer-immunoglobulin Fc fragment conjugate in which a bioactive polypeptide monomer and an immunoglobulin Fc fragment are linked via a non-peptide linker, wherein the bioactive polypeptide is linked, in a monomer form, to one immunoglobulin Fc fragment via the non-peptide linker, and demonstrates a lower receptor-mediated internalization or receptor-mediated clearance, compared to a dimer conjugate having two molecules of bioactive polypeptide linked to one immunoglobulin Fc fragment via a non-peptide polymer, or a bioactive polypeptide-immunoglobulin Fc fragment inframe conjugate; and a method for preparing the sustained pharmaceutical composition.