Oxyntomodulin binding molecules, and uses thereof
Provided herein are novel N- and C-terminal oxyntomodulin polypeptide binding molecules, and uses thereof, including a method for quantitating oxyntomodulin.
1 . A polypeptide molecule selected from the group consisting of
(a) a polypeptide molecule that binds the N-terminal region of each of human oxyntomodulin (SEQ ID NO: 25) and human glucagon (SEQ ID NO: 30), wherein the polypeptide molecule comprises the complementarity determining regions (CDRs) set forth in SEQ ID NOS: 1-6 and
(b) a polypeptide molecule that binds the C-terminal region in each of human oxyntomodulin (SEQ ID NO: 25) and human glicentin (SEQ ID NO: 28), wherein the polypeptide molecule comprises the complementarity determining regions (CDRs) set forth in SEQ ID NOS: 13-18.
2 . The polypeptide molecule of claim 1 , wherein the polypeptide molecule is an antibody.
3 . The polypeptide molecule of claim 1 , wherein the polypeptide molecule is an scFv or a Fab.
4 . The polypeptide molecule of claim 1 (a), wherein the polypeptide molecule is an antibody comprising a heavy chain variable region (VH) comprising SEQ ID NO: 7 and a light chain variable region (VL) comprising SEQ ID NO: 8.
5 . The polypeptide molecule of claim 4 , wherein the polypeptide molecule is an antibody comprising a heavy chain comprising SEQ ID NO: 9 and a light chain comprising SEQ ID NO: 10.
6 . The polypeptide molecule of claim 5 , wherein the polypeptide molecule is an antibody comprising a heavy chain consisting of SEQ ID NO: 9 and a light chain consisting of SEQ ID NO: 10.
7 . A nucleic acid molecule selected from the group consisting of
(a) a nucleic acid molecule comprising one or both of a first nucleic acid sequence encoding SEQ ID NO: 9 and a second nucleic acid sequence encoding SEQ ID NO: 10 and
(b) a nucleic acid molecule comprising one or both of a first nucleic acid sequence encoding SEQ ID NO: 21 and a second nucleic acid sequence encoding SEQ ID NO: 22.
8 . The nucleic acid molecule of claim 7 (a), wherein the first nucleic acid sequence encoding SEQ ID NO: 9 comprises SEQ ID NO: 11, and wherein the second nucleic acid sequence encoding SEQ ID NO: 10 comprises SEQ ID NO: 12.
9 . A vector selected from the group consisting of
(a) a vector comprising one or both of a first nucleic acid sequence encoding SEQ ID NO: 9 and a second nucleic acid sequence encoding SEQ ID NO: 10 and
(b) a vector comprising one or both of a first nucleic acid sequence encoding SEQ ID NO: 21 and a second nucleic acid sequence encoding SEQ ID NO: 22.
10 . A composition comprising the vector of claim 9 .
11 . A cell comprising the vector of claim 9 .
12 . The cell of claim 11 , wherein the cell is a mammalian cell.
13 . A process of producing a polypeptide molecule, comprising culturing a cell comprising
(a) one or both of a first nucleic acid sequence encoding SEQ ID NO: 9 and a second nucleic acid sequence encoding SEQ ID NO: 10 or
(b) one or both of a first nucleic acid sequence encoding SEQ ID NO: 21 and a second nucleic acid sequence encoding SEQ ID NO: 22,
under conditions such that the polypeptide molecule is expressed, and recovering the expressed polypeptide molecule from the culture medium.
14 . A polypeptide molecule produced by the process of claim 13 .
15 . A composition comprising the polypeptide molecule of claim 14 .
16 . The polypeptide molecule of claim 1 (b), wherein the polypeptide molecule is an antibody comprising a VH comprising SEQ ID NO: 19 and a VL comprising SEQ ID NO: 20.
17 . The polypeptide molecule of claim 16 , wherein the polypeptide molecule is an antibody comprising a heavy chain comprising SEQ ID NO: 21 and a light chain comprising SEQ ID NO: 22.
18 . The polypeptide molecule of claim 17 , wherein the polypeptide molecule is an antibody comprising a heavy chain consisting of a SEQ ID NO: 21 and a light chain consisting of SEQ ID NO: 22.
19 . The nucleic acid molecule of claim 7 (b), wherein the first nucleic acid sequence encoding SEQ ID NO: 21 comprises SEQ ID NO: 23, and wherein the second nucleic acid sequence encoding SEQ ID NO: 22 comprises SEQ ID NO: 24.
20 . A composition comprising the polypeptide of claim 1 .
21 . A method of determining the concentration of human oxyntomodulin (SEQ ID NO: 25) in a liquid sample, comprising:
(a) contacting a liquid sample comprising human oxyntomodulin with a first polypeptide molecule that binds the C-terminal region in each of human oxyntomodulin (SEQ ID NO: 25) and human glicentin (SEQ ID NO: 28), wherein the first polypeptide molecule comprises the CDRs of SEQ ID NOS: 13-18, thereby forming a first polypeptide molecule-human oxyntomodulin complex;
(b) contacting the first polypeptide molecule-human oxyntomodulin complex with a second polypeptide molecule that binds the N-terminal region of each of human oxyntomodulin (SEQ ID NO: 25) and human glucagon (SEQ ID NO: 30), wherein the second polypeptide molecule comprises the CDRs of SEQ ID NOS: 1-6, thereby forming a first polypeptide molecule-human oxyntomodulin-second polypeptide molecule complex; and
(c) quantitating the amount of oxyntomodulin in the first polypeptide molecule-human oxyntomodulin-second polypeptide molecule complex by comparison against a standard curve of known amounts of human oxyntomodulin (SEQ ID NO: 25).
22 . The method of claim 21 , wherein the liquid sample is serum or plasma.
23 . The method of claim 21 , wherein the first polypeptide molecule is an antibody and the second polypeptide molecule is an antibody.
24 . The method of claim 21 , wherein
the first polypeptide molecule is an antibody comprising a VH comprising SEQ ID NO: 19 and a VL comprising SEQ ID NO: 20, and
the second polypeptide molecule is an antibody comprising a VH comprising SEQ ID NO: 7 and a VL comprising SEQ ID NO: 8.
25 . The method of claim 21 , wherein
the first polypeptide molecule is an antibody comprising a heavy chain comprising SEQ ID NO: 21 and comprising a light chain comprising SEQ ID NO: 22, and
the second polypeptide molecule is an antibody comprising a heavy chain comprising SEQ ID NO: 9 and a light chain comprising SEQ ID NO: 10.
26 . The method of claim 21 , wherein
the first polypeptide molecule is an antibody comprising a heavy chain consisting of SEQ ID NO: 21 and a light chain consisting of SEQ ID NO: 22, and
the second polypeptide molecule is an antibody comprising a heavy chain consisting of SEQ ID NO: 9 and a light chain consisting of SEQ ID NO: 10.