Phenotypic protein profiling of different B cell sub-populations using antibody CD-microarrays.

Antibody microarrays enable extensive protein expression profiling, and provide a valuable complement to DNA microarray-based gene expression profiling. In this study, we used DotScan antibody microarrays that contain antibodies against 82 different cell surface antigens, to determine phenotypic protein expression profiles for human B cell sub-populations. We then demonstrated that the B cell protein profile can be used to delineate the relationship between normal B cells and malignant counterparts. Principle component analysis showed that the lymphomas did not cluster with the normal memory B cells or germinal centre B cells, but they did cluster with germinal centre founder cells and naïve B cells.

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