Bayer Corporation

Siemens Healthcare Diagnostics Gmbh

Instrumentation Laboratory Company

Siemens Medical Solutions Diagnostic

Hartmut Schroeder

Say-Jong Law

Todd B Sells

Anand Natrajan

Qingping Jiang

David J Sharpe

Guohan Yang

Hana Lukinsky

Brian David Warner

Thomas Horn

Eugene K Achter

Ellen H Fiss

Stephen S Trotta

Chemiluminescent acridinium compounds are used in homogeneous assays to determine the concentration of an analyte in a sample without strong acid or strong base treatment. The chemiluminescent acridinium compounds include acridinium esters with electron donating functional groups at the C2 and/or C7 position on the acridinium nucleus to inhibit pseudo-base formation, or acridinium sulfonamides with or without electron donating functional groups at the C2 and/or C7 position on the acridinium nucleus.

Applications of acridinium compounds and derivatives in homogeneous assays

An analytical instrument for the immobilization of antigens to be detected in an immunoassay using mangetizable beads. The instrument includes a probe containing magnetizable particles and a plurality of magnetic devices for applying a magnetic field gradient to the particles in the probe reservoir. The probe is movable between the plurality of magnetic devices and at least one of the probe positions may be used to immobilize the magnetic particles in the fluid medium and at least another position may be used to resuspend the particles in a fluid medium.

Immunoassay probe

Methods are provided for reducing background signals encountered in nucleic acid hybridization assays and other assays that involve hybridization of a labeled oligomer to its complement. The method is premised on the significant reduction of signal generation that occurs when a quenchable dye-labeled oligomer forms a hybrid complex. In addition, a method is provided for enhancing the detectable signal emitted from an amplification multimer hybridized to an oligomer probe to which a quenchable dye has been conjugated through a linker such that the emission from the dye is not quenched upon hybrid complex formation. Novel oligonucleotide probes are also provided that comprise an oligomer to which has been directly or indirectly through a linker a quenchable dye.

Oligonucleotide probes bearing quenchable fluorescent labels, and methods of use thereof

Growing community of inventors

Franklin, MA, United States of America

Hartmut Schroeder