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A Murine ADCC Reporter Assay for Vaccine and Antibody Drug Preclinical Development

Part # PS351


Alieen Pagiuo, Teresa Surowy and Frank Fan
Promega Corporation, 2800 Woods Hollow Road, Madison, WI 53711, USA

In preclinical studies in mice, assessment of antibody dependent cell mediated cytotoxicity (ADCC) of a vaccine or antibody drug candidate is essential. Traditional murine ADCC assays are arduous and highly variable, typically requiring the isolation, cell culture, and in some cases differentiation of bone marrow monocytes/macrophages or NK cells.

In an effort to develop a less variable mouse ADCC bioassay with improved performance and workflow, we utilized bioluminescent reporter based technology. Specifically, we developed a bioassay that exhibits FcγRIV mediated ADCC pathway activation in response to native mouse antibodies, chimeric, humanized and human antibodies with the expected IgG subclass specificity. The bioassay is specific and can appropriately discriminate between antibodies of different IgG subclasses. The bioassay cells are provided in thaw and use format, are compatible with both adherent and suspended target cells, and together with an optimized protocol provide low assay variability and a more streamlined workflow compared to traditional mouse ADCC bioassays.

Printed in USA.