Monoclonal antibodies to tacrolimus and immunoassays methods...

Chemistry: natural resins or derivatives; peptides or proteins; – Proteins – i.e. – more than 100 amino acid residues – Blood proteins or globulins – e.g. – proteoglycans – platelet...

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C530S389800, C530S391300, C435S007100, C436S172000, C436S815000

Reexamination Certificate

active

08030458

ABSTRACT:
An IgG1λ monoclonal antibody to the immunosuppressive drug tacrolimus has improved properties. In particular, this monoclonal antibody, designated 1H6, has reduced cross-reactivity to several tacrolimus metabolites. This antibody is suitable for performance of immunoassays such as homogeneous immunoassays to detect or determine the presence or concentration of tacrolimus in samples such as blood samples. The invention further includes derivatives of tacrolimus derivatized at a non-binding portion of the molecule useful in immunizing antibody-producing animals and in producing such monoclonal antibodies, as well as labeled derivatives of tacrolimus useful as tacrolimus analogues in such assays. The invention further includes immunoassay methods for the detection of tacrolimus and test kits useful in performing such immunoassays.

REFERENCES:
patent: 3817837 (1974-06-01), Rubinstein et al.
patent: 5532137 (1996-07-01), Niwa et al.
patent: 5635406 (1997-06-01), Grenier et al.
patent: 0293892 (1988-12-01), None
patent: 01-92659 (1989-04-01), None
patent: 01-131200 (1989-05-01), None
patent: 94/04700 (1994-03-01), None
patent: 94/25022 (1994-11-01), None
patent: 94/25022 (1994-11-01), None
patent: 96/02004 (1996-01-01), None
patent: 96/41184 (1996-12-01), None
M. Oellerich. Enzyme-immunoassay: a review. J. CLin. Chem. Clin. Biochem 1984, vol. 22, No. 12, pp. 895-904.
Iwasaki et al. Further metabolism of FK506( Tacrolimus). Identification and biological activities of the metabolites oxidized at multiple sites of FK506. Drug Metabolism and Disposition 1995, vol. 23, No. 1, pp. 28-34.
G. Wiederrecht et al, “The Mechanism of Action of FK-506 and Cyclosporin A” Ann. N.Y. Acad. Sci. 696,9-19 (1993).
M.L. Cleary & J. Sklar, “Lymphoproliferative Disorders in Cardiac Transplant Recipients are Multiclonal Lymphomas”, Lancet 2, 49-493 (1984).
L.J. Swinnen et al, “Increased Incidence of Lymphoproliferative Disorder after Immunosuppression with a Monoclonal Antibody OKT3 . . . ” New England Journal of Medicine 323, 1723-1728 (1990).
B.Z. Katz et al.,“Latent and Replicating Forms of Epstein-Barr Virus DNA and Lymphomas in Lymphoprliferative Diseases” Journal of Infect. Dis., 160, 589-598 (1989).
J.S. Huston et al., “Protein Engineering of Antibody Binding Sites: Recovery of Specific Activity in an Anti-Digoxin . . . ” Proc. Nat. Acad. Science, USA 85, 5879-5883 (1988).
G.T. Hermanson, “Bioconjugate Techniques” Academic Press, San Diego, 570-592, 1996.
P.J. Taylor et al., “Sensitive, Specific Quantative Analysis of Tacrolimus (FK506) in Blood by Liquid Chromatography-Electrospray Tandem . . . ” Clin. Chem. 42, 279-285 (1996).
H.J. Jeong et al., “New Monoclonal Antibody for the Immunosuppressive Drug Tacrolimus”, Ther. Drug Monit. 21, 444 (Aug. 1999), Abstract No. 65.
V.W. Armstrong et al., “Evaluation of an EMIT Tacrolimus Assay: Comparison with Pentamer Formation Assay and . . . ”, Ther. Drug Monit. 21, 448(Aug. 1999), Abstract No. 80.
L. Backman et al. “Transplantation” 57(4), 519-525 (1994).
Alak, Ala M., “Measurement of Tacrolimus (FK506) and Its Metabolites: A Review of Assay Development and Application in Therapeutic Drug Monitoring and Pharmacokenetic Studies,” Therapeutic Drug Monitoring, vol. 19, pp. 338-351, 1997, Lippincot-Raven Pub., Philadelphia.
Murthy et al., “Tacrolimus Metabolite Cross-Reactivity in Different Tacrolimus Assays,” Clinical Biochemistry, vol. 31, No. 8, pp. 613-617, 1998.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Monoclonal antibodies to tacrolimus and immunoassays methods... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Monoclonal antibodies to tacrolimus and immunoassays methods..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Monoclonal antibodies to tacrolimus and immunoassays methods... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4296582

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.