Antibodies to quetiapine and use thereof

1. An isolated antibody or a binding fragment thereof, which specifically binds to quetiapine and which said isolated antibody or binding fragment thereof comprises an amino acid sequence selected from the group consisting of:

a) the isolated antibody or the binding fragment thereof comprising a light chain variable region comprising the amino acid sequence of SEQ ID NO:19, SEQ ID NO:23 or SEQ ID NO:27, and a heavy chain variable region;

b) the isolated antibody or the binding fragment thereof comprising a light chain variable region, and a heavy chain variable region comprising the amino acid sequence of SEQ ID NO:20, SEQ ID NO:24 or SEQ ID NO:28;

c) the isolated antibody or the binding fragment thereof comprising a light chain variable region having the amino acid sequence of SEQ ID NO:19 and a heavy chain variable region having the amino acid sequence of SEQ ID NO:20;

d) the isolated antibody or the binding fragment thereof comprising a light chain variable region having the amino acid sequence of SEQ ID NO:23 and a heavy chain variable region having the amino acid sequence of SEQ ID NO:24; and

e) the isolated antibody or the binding fragment thereof comprising a light chain variable region having the amino acid sequence of SEQ ID NO:27 and a heavy chain variable region having the amino acid sequence of SEQ ID NO:28.

2. The antibody of claim 1 , wherein the antibody comprises the light chain variable region having the amino acid sequence SEQ ID NO:19 and the heavy chain variable region having the amino acid sequence SEQ ID NO:20.

3. The antibody of claim 1 , wherein the antibody comprises the light chain variable region having the amino acid sequence SEQ ID NO:23 and the heavy chain variable region having the amino acid sequence SEQ ID NO:24.

4. The antibody of claim 1 , wherein the antibody comprises the light chain variable region having the amino acid sequence SEQ ID NO:27 and the heavy chain variable region having the amino acid sequence SEQ ID NO:28.

5. The antibody of claim 1 , wherein the antibody comprises:

a) a light chain CDR1 sequence comprising amino acid residues 43 to 58 of SEQ ID NO:19;

b) a light chain CDR2 sequence comprising amino acid residues 74 to 80 of SEQ ID NO:19;

c) a light chain CDR3 sequence comprising amino acid residues 113 to 121 of SEQ ID NO:19;

d) a heavy chain CDR1 sequence comprising amino acid residues 45 to 54 of SEQ ID NO:20;

e) a heavy chain CDR2 sequence comprising amino acid residues 69 to 85 of SEQ ID NO:20; and

f) a heavy chain CDR3 sequence comprising amino acid residues 118 to 129 of SEQ ID NO:20.

6. The antibody of claim 1 , wherein the antibody comprises:

a) a light chain CDR1 sequence comprising amino acid residues 43 to 58 of SEQ ID NO:23;

b) a light chain CDR2 sequence comprising amino acid residues 74 to 80 of SEQ ID NO:23;

c) a light chain CDR3 sequence comprising amino acid residues 113 to 121 of SEQ ID NO:23;

d) a heavy chain CDR1 sequence comprising amino acid residues 45 to 54 of SEQ ID NO:24;

e) a heavy chain CDR2 sequence comprising amino acid residues 69 to 85 of SEQ ID NO:24; and

f) a heavy chain CDR3 sequence comprising amino acid residues 123 to 129 of SEQ ID NO:24.

7. The antibody of claim 1 , wherein the antibody comprises:

a) a light chain CDR1 sequence comprising amino acid residues 43 to 58 of SEQ ID NO:27;

b) a light chain CDR2 sequence comprising amino acid residues 74 to 80 of SEQ ID NO:27;

c) a light chain CDR3 sequence comprising amino acid residues 113 to 121 of SEQ ID NO:27;

d) a heavy chain CDR1 sequence comprising amino acid residues 45 to 54 of SEQ ID NO:28;

e) a heavy chain CDR2 sequence comprising amino acid residues 69 to 85 of SEQ ID NO:28; and

f) a heavy chain CDR3 sequence comprising amino acid residues 123 to 129 of SEQ ID NO:28.

8. The antibody 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.

9. The antibody of claim 1 , wherein the antibody is a monoclonal antibody.

10. An assay kit comprising the antibody of claim 1 .

11. An assay device comprising the antibody of claim 1 .

12. The assay device of claim 11 wherein the device is a lateral flow assay device.

13. A method of detecting quetiapine in a sample, the method comprising:

(i) contacting a sample with the antibody of claim 1 labeled with a detectable marker, wherein the labeled antibody and quetiapine present in the sample form a labeled complex; and

(ii) detecting the labeled complex so as to detect quetiapine in the sample.

14. A competitive immunoassay method for detecting quetiapine in a sample, the method comprising:

(i) contacting a sample with the antibody of claim 1 , and with quetiapine or a competitive binding partner of quetiapine, wherein one of the antibody and the quetiapine or competitive binding partner thereof is labeled with a detectable marker, and wherein sample quetiapine competes with the quetiapine or competitive binding partner thereof for binding to the antibody; and

(ii) detecting the label so as to detect sample quetiapine.

15. The method of claim 14 wherein the quetiapine or competitive binding partner thereof is labeled with the detectable marker.

16. The method of claim 14 wherein the antibody is labeled with a detectable marker.

17. The method of claim 14 wherein the immunoassay is performed on a lateral flow assay device and the sample is applied to the device.

18. The method of claim 13 or 14 , further comprising detecting the presence of one or more analytes in addition to quetiapine.

19. The method of claim 18 wherein the one or more analytes are antipsychotic drugs other than quetiapine.

20. The method of claim 19 wherein the anti-psychotic drugs other than quetiapine are selected from the group consisting of: risperidone, paliperidone, aripiprazole, olanzapine, and metabolites thereof.