Monoclonal antibodies to proprotein convertase subtilisin kexin type 9 (PCSK9)
Antigen binding proteins that interact with Proprotein Convertase Subtilisin Kexin Type 9 (PCSK9) are described. Methods of treating hypercholesterolemia and other disorders by administering a pharmaceutically effective amount of an antigen binding protein to PCSK9 are described. Methods of detecting the amount of PCSK9 in a sample using an antigen binding protein to PCSK9 are described.
1. A monoclonal antibody that binds to a PCSK9 protein, wherein the PCSK9 protein comprises the amino acid sequence of SEQ ID NO: 1, wherein the monoclonal antibody comprises a light chain complementarity determining region (CDR) CDR 1 that is a CDR1 in SEQ ID NO:46; a light chain CDR2 that is a CDR2 in SEQ ID NO:46; and a light chain CDR3 that is a CDR3 in SEQ ID NO: 46, and wherein the monoclonal antibody comprises a heavy chain CDR1 that is a CDR1 in SEQ ID NO:60; a light chain CDR2 that is a CDR2 in SEQ ID NO:60; and a light chain CDR3 that is a CDR3 in SEQ ID NO:60.
2. The monoclonal antibody of claim 1 , wherein the monoclonal antibody is a LDLR competitive neutralizing monoclonal antibody.
3. The monoclonal antibody of claim 1 that selectively binds to PCSK9, wherein said monoclonal antibody binds to PCSK9 with a K d that is less than 100 pM.
4. The monoclonal antibody of Claim 1 , wherein the monoclonal antibody binds to a PCSK 9 protein of SEQ ID NO: 303 in a first manner, wherein the monoclonal antibody binds to a variant of PCSK9 in a second manner, wherein said PCSK9 variant has at least one point mutation at a position selected from the group consisting of: 207, 208, 162, 164, and 167 of SEQ ID NO: 303, wherein the first manner comprises a first EC50, a first Bmax, or a first EC50 and a first Bmax, wherein the second manner comprises a second EC50, a second Bmax, ora second EC50 and a second Bmax, and wherein a value for the first manner is different from a value for the second manner.
5. The monoclonal antibody of claim 4 , wherein the first manner comprises a first Bmax, wherein the second manner comprises a second Bmax that is different from the first Bmax, and wherein said PCSK9 variant has at least one point mutation selected from the group consisting of: D162R, R164E, and E167R.
6. The monoclonal antibody of claim 4 , wherein the monoclonal antibody binds to PCSK9 at a location that overlaps with a location that LDLR binds to PCSK9.
7. The monoclonal antibody of Claim 2 , wherein when the monoclonal antibody is bound to PCSK9, the monoclonal antibody is positioned 5 angstroms or less from at least one of the following residues of PCSK9: 5153, S188, 1189, Q190, S191, D192, R194, E197, G198, R199, V200, D224, R237, D238, K243, S373, D374, 5376, T377, or F379.
8. The monoclonal antibody of Claim 1 , wherein said monoclonal antibody binds to human PCSK9 with a K D of 1× 10 − 7 or tighter.
9. The monoclonal antibody of Claim 1 , wherein said monoclonal antibody binds to human PCSK9 with a K D of 1× 10 − 9 or tighter.
10. The monoclonal antibody of Claim 1 , wherein said monoclonal antibody binds to human PCSK9 with a K D in a picoMolar range.
11. The monoclonal antibody of Claim 1 , wherein said monoclonal antibody binds to human PCSK9 with a K D in a nanoMolar range.
12. The monoclonal antibody of Claim 1 , wherein said monoclonal antibody binds to murine PCSK9 with a K D in a nanoMolar range.
13. The monoclonal antibody of Claim 1 , wherein said monoclonal antibody binds to cynomolgus monkey PCSK9 with a K D in a picoMolar range.
14. The monoclonal antibody of Claim 1 , wherein said monoclonal antibody is a human antibody.
15. The monoclonal antibody of Claim 1 , wherein said monoclonal antibody is a humanized antibody.
16. The monoclonal antibody of Claim 1 , wherein said monoclonal antibody is neutralizing antibody.
17. The monoclonal antibody of claim 1 , wherein the monoclonal antibody comprises a light chain comprising an amino acid sequence of SEQ ID NO: 46, and wherein the monoclonal antibody comprises a heavy chain comprising an amino acid sequence of SEQ ID NO: 60.