摘要:
The present invention relates to compositions comprising factor VIII coagulation factors linked to extended recombinant polypeptide (XTEN), isolated nucleic acids encoding the compositions and vectors and host cells containing the same, and methods of making and using such compositions in treatment of factor VIII-related diseases, disorders, and conditions.
摘要:
The present disclosure provides methods of administering chimeric and hybrid Factor VIII (FVIII) polypeptides comprising FVIII and Fc to subjects at risk of developing inhibitory FVIII immune responses, including anti-FVIII antibodies and/or cell-mediated immunity. The administration is sufficient to promote coagulation and to induce immune tolerance to FVIII. The chimeric polypeptide can comprise full-length FVIII or a FVIII polypeptide containing a deletion, e.g., a full or partial deletion of the B domain.
摘要:
The present invention provides a VWF fragment comprising the D' domain and D3 domain of VWF, a chimeric protein comprising the VWF fragment and a heterologous moiety, or a chimeric protein comprising the VWF fragment and a FVIII protein and methods of using the same. A polypeptide chain comprising a VWF fragment of the invention binds to or is associated with a polypeptide chain comprising a FVIII protein and the polypeptide chain comprising the VWF fragment can prevent or inhibit binding of endogenous VWF to the FVIII protein. By preventing or inhibiting binding of endogenous VWF to the FVIII, which is a half-life limiting factor for FVIII, the VWF fragment can induce extension of half-life of the FVIII protein. The invention also includes nucleotides, vectors, host cells, methods of using the VWF fragment, or the chimeric proteins.
摘要:
The present invention provides chimeric proteins comprising a Factor VIII (FVIII) polypeptide and XTEN polypeptides. The FVIII polypeptide can have a reduced affinity for von Willebrand Factor (VWF). XTEN polypeptides of appropriate sizes are inserted into the FVIII polypeptide at particular locations in order to extend the half-life of the FVIII polypeptide. The invention also includes nucleotides, vectors, host cells, and methods of using the chimeric proteins, e.g., to treat bleeding diseases and disorders.