Methods for the production of antibodies to specific regions...

C - Chemistry – Metallurgy – 07 – K

Patent

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Details

C07K 16/44 (2006.01) C07K 7/64 (2006.01) C07K 16/14 (2006.01) C12N 5/12 (2006.01) G01N 33/577 (2006.01) G01N 33/68 (2006.01) G01N 33/94 (2006.01) A61K 39/00 (2006.01)

Patent

CA 2343356

This invention relates to the production of polyclonal and monoclonal antibodies to specific regions of cyclosporine (CSA) and/or CSA metabolites/derivatives. The reactivity of these polyclonal and monoclonal antibodies make them particularly useful for immunoassays for therapeutic drug monitoring (TDM). These immunoassays or TDM kits may include polyclonal or monoclonal antibodies to specific sites of CSA and/or CSA metabolites. These kits may also include various combinations of polyclonal antibodies, polyclonal and monoclonal antibodies or a panel of monoclonal antibodies. Cyclosporine or CSA metabolite conjugate immunogens are prepared fo the immunization of a host animal to produce antibodies directed against specific regions of the CSA or CSA metabolite molecule. By determining the specific binding region of a particular antibody, immunoassays which are capable of distinguishing between the parent molecule, active metabolites, inactive metabolites and other structurally similar immunosuppressant compounds are developed. The use of divinyl sulfone (DVS) as the linker arm molecule for forming cyclosporine and cyclosporine metabolite protein conjugate immunogens is described.

Cette invention se rapporte à la production d'anticorps polyclonaux et monoclonaux dirigés contre des régions spécifiques de cyclosporine (CSA) et/ou de métabolites, dérivés de CSA. La réactivité de ces anticorps polyclonaux et monoclonaux les rend particulièrement utiles dans les immunodosages de pharmacovigilance thérapeutique (TDM). Ces immunodosages ou kits TDM peuvent contenir des anticorps polyclonaux et monoclonaux dirigés contre des sites spécifiques de CSA et/ou de métabolites de CSA. Ces kits peuvent également renfermer diverses combinaisons d'anticorps polyclonaux, d'anticorps polyclonaux et monoclonaux ou d'un panel d'anticorps monoclonaux. Des immunogènes de conjugués de cyclosporine ou de métabolites de CSA sont préparés pour l'immunisation d'un animal hôte, en vue de produire des anticorps dirigés contre des régions spécifiques de la molécule de CSA ou de métabolites de CSA. En déterminant la région de liaison spécifique d'un anticorps particulier, on peut mettre au point des immunodosages capables de faire la distinction entre les molécules parentes, des métabolites actifs, des métabolites inactifs et d'autres composés immunosuppresseurs de structure similaire. L'utilisation de divinylsulfone (DVS) comme molécule segment de liaison pour former les immunogènes de conjugués protéiques de cyclosporine et de métabolites de cyclosporine est présentée.

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