Antibodies to quetiapine and use thereof
Disclosed is an antibody which binds to quetiapine, which can be used to detect quetiapine in a sample such as in a competitive immunoassay method. The antibody can be used in a lateral flow assay device for point-of-care detection of quetiapine, including multiplex detection of aripiprazole, quetiapine, olanzapine, and risperidone in a single lateral flow assay device.
1. An isolated antibody or a binding fragment thereof, which specifically binds to quetiapine comprising:
a) a light chain variable region comprising CDR1, CDR2 and CDR3 of SEQ ID NO:19, and a heavy chain variable region comprising CDR1, CDR2 and CDR3 of SEQ ID NO:20, wherein the light chain CDR1 sequence comprises amino acid residues 43 to 58 of SEQ ID NO:19; the light chain CDR2 sequence comprises amino acid residues 74 to 80 of SEQ ID NO:19; the light chain CDR3 sequence comprises amino acid residues 113 to 121 of SEQ ID NO:19; the heavy chain CDR1 sequence comprises amino acid residues 45 to 54 of SEQ ID NO:20; the heavy chain CDR2 sequence comprises amino acid residues 69 to 85 of SEQ ID NO:20; and the heavy chain CDR3 sequence comprises amino acid residues 118 to 129 of SEQ ID NO:20;
b) a light chain variable region comprising CDR1, CDR2 and CDR3 of SEQ ID NO:23, and a heavy chain variable region comprising CDR1, CDR2 and CDR3 of SEQ ID NO:24, wherein the light chain CDR1 sequence comprises amino acid residues 43 to 58 of SEQ ID NO:23; the light chain CDR2 sequence comprises amino acid residues 74 to 80 of SEQ ID NO:23; the light chain CDR3 sequence comprises amino acid residues 113 to 121 of SEQ ID NO:23; the heavy chain CDR1 sequence comprises amino acid residues 45 to 54 of SEQ ID NO:24; the heavy chain CDR2 sequence comprises amino acid residues 69 to 85 of SEQ ID NO:24; and the heavy chain CDR3 sequence comprises amino acid residues 123 to 129 of SEQ ID NO:24; or
c) a light chain variable region comprising CDR1, CDR2 and CDR3 of SEQ ID NO:27, and a heavy chain variable region comprising CDR1, CDR2 and CDR3 of SEQ ID NO:28, wherein the light chain CDR1 sequence comprises amino acid residues 43 to 58 of SEQ ID NO:27; the light chain CDR2 sequence comprises amino acid residues 74 to 80 of SEQ ID NO:27; the light chain CDR3 sequence comprises amino acid residues 113 to 121 of SEQ ID NO:27; the heavy chain CDR1 sequence comprises amino acid residues 45 to 54 of SEQ ID NO:28; the heavy chain CDR2 sequence comprises amino acid residues 69 to 85 of SEQ ID NO:28; and the heavy chain CDR3 sequence comprises amino acid residues 123 to 129 of SEQ ID NO:28.
2. The isolated antibody or a binding fragment thereof of claim 1 , wherein the antibody fragment is selected from the group of fragments consisting of Fv, F(ab′), F(ab′)2, scFv, minibody and diabody fragments.
3. The isolated antibody of claim 1 , wherein the antibody is a monoclonal antibody.
4. An assay kit comprising the isolated antibody or a binding fragment thereof of claim 1 .
5. An assay device comprising the isolated antibody or a binding fragment thereof of claim 1 .
6. The assay device of claim 5 , wherein the device is a lateral flow assay device.
7. A method of detecting quetiapine in a sample, the method comprising:
(i) contacting a sample with the antibody or binding fragment thereof of claim 1 labeled with a detectable marker, wherein the labeled antibody or a binding fragment thereof and quetiapine present in the sample form a labeled complex; and
(ii) detecting the labeled complex, thereby detecting quetiapine in the sample.
8. A competitive immunoassay method for detecting quetiapine in a sample, the method comprising:
(i) contacting a sample with the antibody or binding fragment thereof of claim 1 , and with quetiapine or a competitive binding partner of quetiapine, wherein one of the antibody or binding fragment thereof and the quetiapine or competitive binding partner of quetiapine is labeled with a detectable marker, and wherein sample quetiapine competes with the quetiapine or competitive binding partner thereof for binding the antibody or binding fragment thereof to form a complex; and
(ii) detecting the amount of label to detect quetiapine in the sample.
9. The method of claim 8 , wherein the quetiapine or competitive binding partner of quetiapine is labeled with the detectable marker.
10. The method of claim 8 , wherein the antibody or binding fragment thereof is labeled with a detectable marker.
11. The method of claim 8 , wherein the immunoassay is performed on a lateral flow assay device and the sample is applied to the device.
12. The method of claim 7 or 8 , wherein the detection of quetiapine is used as an aid to determine patient adherence with prescribed quetiapine therapy.