Nucleic acids encoding FGF21-Fc fusion proteins
The invention relates to nucleic acids encoding fusion proteins comprising polypeptide and protein variants of fibroblast growth factor 21 (FGF21) with improved pharmaceutical properties. Also disclosed are vectors and host cells comprising the same and methods of producing the fusion proteins.
1. A nucleic acid coding for a fusion protein comprising a fibroblast growth factor 21 (FGF21) variant and an Fc region, wherein the FGF21 variant comprises an amino acid sequence with at least 95% identity to the full length hFGF21 sequence SEQ ID NO:1, and comprises at least the following mutations relative to SEQ ID NO:1: Q55C, G148C, K150R, P158S, S195A, P199G, and G202A, and one of R105K and A109T.
2. A vector comprising the nucleic acid according to claim 1 .
3. A host cell comprising the vector of claim 2 .
4. A method of producing a fusion protein, wherein the method comprises culturing the host cell of claim 3 .
5. The nucleic acid of claim 1 , wherein the nucleic acid codes for a fusion protein comprising the amino acid sequence of SEQ ID NO: 10, 11, 12, or 13.
6. A vector comprising the nucleic acid according to claim 5 .
7. A host cell comprising the vector of claim 6 .
8. A method of producing a fusion protein, wherein the method comprises culturing the host cell of claim 7 .
9. The nucleic acid of claim 1 , wherein the nucleic acid codes for a fusion protein comprising the amino acid sequence of SEQ ID NO: 11.
10. A vector comprising the nucleic acid according to claim 9 .
11. A host cell comprising the vector of claim 10 .
12. A method of producing a fusion protein, wherein the method comprises culturing the host cell of claim 11 .