Protein complexes having Factor VIII:C activity and production thereof
DCFirst Claim
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1. A composition comprising Factor VIII:
- C proteins, wherein the Factor VIII;
C proteins consist essentially of a first polypeptide comprising an amino acid sequence of the A domain of human Factor VIII;
C as encoded by the polynucleotide present in plasmid pSVF8-200 (ATCC No.
40190) or an amino acid sequence that differs therefrom in having not more than 10 number % amino acid substitutions, and a second polypeptide comprising an amino acid sequence of the C domain of human Factor VIII;
C as encoded by the polynucleotide present in plasmid pSVF8-200 (ATCC No.
40190) or an amino acid sequence that differs therefrom in having not more than 10 number % amino acid substitutions.
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Abstract
Recombinant protein complexes having human Factor VIII:C activity are expressed in a eukaryotic host cell by transforming the host cell with first and second expression cassettes encoding a first polypeptide substantially homologous to human Factor VIII:C A domain and a second polypeptide substantially homologous to human Factor VIII:C C domain, respectively. In the present invention, the first polypeptide may be extended having at its C-terminal a human Factor VIII:C B domain N-terminal peptide, a polypeptide spacer of 3-40 amino acids, and a human Factor VIII:C B domain C-terminal peptide. Expression of the second polypeptide is improved by employing an α1 -antitrypsin signal sequence.
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35 Claims
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1. A composition comprising Factor VIII:
- C proteins, wherein the Factor VIII;
C proteins consist essentially of a first polypeptide comprising an amino acid sequence of the A domain of human Factor VIII;
C as encoded by the polynucleotide present in plasmid pSVF8-200 (ATCC No.
40190) or an amino acid sequence that differs therefrom in having not more than 10 number % amino acid substitutions, and a second polypeptide comprising an amino acid sequence of the C domain of human Factor VIII;
C as encoded by the polynucleotide present in plasmid pSVF8-200 (ATCC No.
40190) or an amino acid sequence that differs therefrom in having not more than 10 number % amino acid substitutions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
- C proteins, wherein the Factor VIII;
Specification