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Bio-Rad Launches Bio-Plex Pro Magnetic Bead-Based Human and Mouse Cytokine Assays

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Bio-Rad Laboratories, Inc. has announced the launch of Bio-Plex Pro magnetic bead-based human and mouse cytokine assays. Developed by Bio-Rad scientists, magnetic bead-based immunoassays offer full automation previously unavailable with suspension bead arrays.

Cytokines play an important role in a wide range of physiological processes, including immune response, inflammation, and the development of blood cells (hematopoiesis). Their utility as biomarkers of a spectrum of disease states, including cancer, makes measuring cytokine levels crucial to diagnostics and therapeutics.

Bio-Rad claims that, Bio-Plex Pro magnetic bead-based human and mouse cytokine assays are multiplex assays that offer can fast performance for the detection of multiple biomarkers in a single experiment, using as little as 12.5 microliters of serum, plasma, or other body fluids.

Magnetic bead-based assays overcome the limitations that inhibit automation of conventional polystyrene bead assays that require manual wash methods involving as many as 14 separate steps. Magnetic bead-based assays enable magnetic separation during wash steps by using a fully-automated magnetic bead washer, the Bio-Plex Pro Wash Station, for results within three to four minutes.

For all 32 mouse cytokine assays, as well as for all 50 human cytokine assays, transfer to the magnetic bead-based format showed comparable or improved performance as compared to polystyrene bead-based Bio-Plex cytokine assays. By eliminating user-to-user variability, the automated wash station increases assay reproducibility.

Resolvyx Pharmaceuticals, a maker of anti-inflammatory drugs, measured cytokine levels in asthmatic response comparing Bio-Rad’s magnetic bead-based assays and polystyrene bead-based Bio-Plex assays. The drug company found that the magnetic assay format performed as well as the polystyrene format with nearly identical results.

Bio-Plex Pro human cytokine assay panels contain assays for 50 well-characterized human and 32 well-characterized mouse cytokines, chemokines, and growth factors. The assays have been configured into kits that contain all necessary reagents and diluents for preparing and running the assay. Customers can choose from premixed kits, have select targets custom blended, or they can order select targets have them custom-shipped and then mix them themselves.