Cyclosporin immunoassay

Chemistry: molecular biology and microbiology – Enzyme – proenzyme; compositions thereof; process for... – Stablizing an enzyme by forming a mixture – an adduct or a...

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

435 792, 435 793, 436527, 436531, 436546, 436815, 436829, 5303889, 5303898, 530403, 530807, C12N 996, G01N 33533, C07K 1644

Patent

active

060543035

ABSTRACT:
A method of measuring the amount of cyclosporin in a sample suspected of containing cyclosporin is disclosed. A method of inactivating interfering cross-reactive material in an assay for measuring the amount of cyclosporin in a sample suspected of containing cyclosporin is also disclosed. Compositions wherein cyclosporin is conjugated to an immunogenic carrier or a label, optionally through a linking group, at an alanine nitrogen atom of the cyclic backbone of cyclosporin are also disclosed. Compositions wherein atiocyclosporin is conjugated, optionally through a linking group, to an immunogenic carrier or a label are also disclosed. Where cyclosporin is conjugated to an immunogenic carrier, the conjugates may be used as immunogens for the preparation of antibodies which are capable of recognizing cyclosporin. Where atiocyclosporin is conjugated to an immunogenic carrier, the conjugates may be used as immunogens for the preparation of antibodies which are capable of recognizing interfering cross-reactive material but substantially incapable of recognizing cyclosporin or cyclosporin-label conjugates. Where cyclosporin is conjugated to a label, the conjugates may be used as part of a signal producing system in cyclosporin assays. Both the antibodies and label conjugates are useful in the disclosed assay methods.

REFERENCES:
patent: 4117118 (1978-09-01), Harri et al.
patent: 4384996 (1983-05-01), Bollinger et al.
patent: 4396542 (1983-08-01), Wenger
patent: 4639434 (1987-01-01), Wenger et al.
patent: 4727035 (1988-02-01), Mahoney
patent: 4764503 (1988-08-01), Wenger
patent: 5089390 (1992-02-01), Davalian et al.
patent: 5169773 (1992-12-01), Rosenthaler et al.
patent: 5350574 (1994-09-01), Erlanger et al.
patent: 5405785 (1995-04-01), Erlanger et al.
V. Quesniaux et al., Prog. Allergy, vol. 38, pp. 108-122 (1986).
B. Erlanger, Methods in Enzymology, vol. 70, pp. 85-104 (1980).
M. Brinkley, Bioconjugate Chem., vol. 3, pp. 2-13 (1992).
I. Maggio, Enzyme-immunoassay, Chemical Aspects of Enzyme-immunoassay (Chapter 4), CRC Press, Inc. (1980).
McBride, et al., Clinical Chemistry, vol. 35:8, (1989) pp. 1726-1730, "Measurement of Cyclosporine in Plasma from Patients with Various Transplants: HPLC and Radioimmunoassay with a Specific Monoclonal Antibody Compared".
Quesniaux, et al., Immunology Letters, vol. 9, (1985) pp. 99-104, "An enzyme immunoassay for the screening of monoclonal antibodies to cyclosporin".
Quesniaux, et al., Molecular Immunology, vol. 24:11 (1987) pp. 1159-1168, "Fine specificity and cross-reactivity of monoclonal antibodies to cyclosporine".
Quesniaux, et al., Clincial Chemistry, vol. 33:1, (1987) pp. 32-37 "Potential of Monoclonal Antibodies to Improve Therapeutic Monitoring of Cyclosporine".
Quesniaux, et al., Prog. Allergy, vol. 38: (1986) pp. 108-122 "Monoclonal Antibodies to Ciclosporin".
Rosano, et al., Transplantation Proceedings, vol. XVIII, No. 6, Suppl 5, (Dec. 1986) pp. 35-40 "Cyclosporine Metabolites in Human Blood and Renal Tissue".
Ryffel, et al., Transplantation Proceedings, vol. XX, No. 2, Suppl 2, (Apr. 1988) pp. 575-584 "Biologic Significance of Cyclosporine Metabolites".
Sandoz Ltd., Ciclosporin RIA-Kit, Instructions for Use, 2nd Edition (Jun. 1983) pp. 1-21.
Sanghvi, et al., Clinical Chemistry, vol. 34:9, (1988) pp. 1904-1906 "Abbott's Fluorescence Polarization Immunoassay for Cyclosporine and Metabolites Compared with the Sandoz "Sandimmune" RIA".
Traber, et al., The Journal of Antibiotics, vol. XLII, No.4, (Sep. 19, 1988), pp. 591-597, "Cyclosporins--New Analogues by Precursor Directed Biosynthesis".
Schran, et al., Clinical Chemistry, vol. 33:12, (1987) pp. 2225-2229, "Determination of Cyclosporine Concentrations with Monoclonal Antibodies".
Vernillet, et al., Clinical Chemistry, vol. 35:4, (1989) pp. 608-611, "Determination of Cyclosporine in Plasma: Specific Radioimmunoassay with a Monoclonal Antibody and Liquid Chromatography Compared".
Wolf, et al., Clinical Chemistry, vol. 35:1 (1989) pp. 120-124 "Measurement of Cyclosporine Concentrations in Whole Blood: HPLC and Radioimmunoassay with a Specific Monoclonal Antibody and .sup.3 H- or .sup.125 I-Labeled Ligand Compared".
Ball, et al., Clinical Chemistry, vol. 34:2, (1988) pp. 257-260, "Specific .sup.3 H Radioimmunoassay with a Monoclonal Antibody for Monitoring Cyclosporine in Blood".
Bowers, et al., Transplantation Proceedings, vol. XVIII, No. 6, Suppl 5, (Dec. 1986) pp. 137-143, "Studies of Cyclosporine Blood Levels: Analysis, Clinical Utility, Pharmacokinetics, Metabolites, and Chronopharmacology".
Cacalano, et al., J. Immunological Methods, vol. 118, (1989) pp. 257-263, "Antibodies to cyclosporine A (CsA) by a novel route and their use to monitor cyclosporine levels by radioimmunoassay".
Christians, et al., Clinical Chemistry, vol. 34:1, (1988) pp. 34-39, "Liquid-Chromatographic Measurement of Cyclosporin A and Its Metabolites in Blood, Bile, and Urine".
Donatsch, et al., J. Immunoassay, vol. 2:1, (1981) pp. 19-32, "A radioimmunoassay to measure cyclosporin A in plasma and serum samples".
Hawk's Cay Meeting, Trasnplantation Proceedings, vol. 22:3, (1990) pp. 1357-1361, "Consensus Document: Hawk's Cay Meeting on Therapeutic Drug Monitoring of Cyclosporine".
Maurer, et al., Drug Metabolism and Disposition, vol. 12:1, (1984) pp. 120-126, "Disposition of cyclosporine in several animal species and man".

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

Cyclosporin immunoassay does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

     

Profile ID: LFUS-PAI-O-992482

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