title: Biosensor analyses of serum autoantibodies: application to antiphospholipid syndrome and systemic lupus erythematosus.
abstract: Autoimmune disorders are rare human diseases characterized by the presence of circulating autoantibodies that bind the body's own structural compounds as target antigens. The detection of autoantibodies is important for the diagnostic process. Immunofluorescence and immunoassay methods do not allow a reliable characterization of binding characteristics. Therefore, novel analytical techniques should be considered. This review describes the application of surface plasmon resonance biosensor systems for the diagnosis of autoimmune disorders. The covalent attachment of native antigens to the sensor chip is a suitable method for obtaining highly reproducible analyses of autoantibodies, allowing the evaluation of kinetic rate and affinity constants, and it may enable the identification of disease-relevant autoantibodies linked to disease progression. The autoantibody microarray is another future-oriented technique. Patterns of differential antigen recognition should allow early diagnosis. This is due to the fact that a broad range of autoreactive B cell responses in autoimmune disorders can only be mirrored by including a sufficient number of antigens in a microarray format.
authors.affiliation: Institut für Klinische Chemie und Pathobiochemie, Klinikum rechts der Isar der Technischen Universität München, Ismaninger Str. 22, 81675, München, Germany.
authors.forename: Markus
authors.initials: M
authors.lastname: Thaler
authors.forename: Alexander
authors.initials: A
authors.lastname: Buhl
authors.forename: Harald
authors.initials: H
authors.lastname: Welter
authors.forename: Anita
authors.initials: A
authors.lastname: Schreiegg
authors.forename: Marcus
authors.initials: M
authors.lastname: Kehrel
authors.forename: Bettina
authors.initials: B
authors.lastname: Alber
authors.forename: Jochen
authors.initials: J
authors.lastname: Metzger
authors.forename: Peter B
authors.initials: PB
authors.lastname: Luppa