651. Purification of Murine IL-10 + B Cells for Analyses of Biological Functions and Transcriptomics.
- Author
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Sun J and Basu U
- Subjects
- Animals, Antigens, CD19 immunology, B-Lymphocyte Subsets cytology, B-Lymphocyte Subsets metabolism, B-Lymphocytes cytology, B-Lymphocytes metabolism, B-Lymphocytes, Regulatory cytology, Cell Lineage genetics, Female, Interleukin-10 immunology, Male, Mice, Mice, Inbred C57BL, Mice, Knockout, Oligonucleotide Array Sequence Analysis methods, Transcriptome genetics, B-Lymphocytes, Regulatory metabolism, Cell Separation methods, Gene Expression Profiling methods
- Abstract
B10 cells are the most frequently investigated subset of Breg cells, capable of suppressing immunity through the expression of the immunosuppressive cytokine IL-10. B10 cells are enriched in phenotypically diverse B-cell subsets. Recently, CD9 was identified as a marker of B10 cells in mice (human B10 cells have a separate set of markers that do not overlap with murine B10 cells). Together with a combination of other B10 markers, CD9 can be used to distinguish both mature and immature B10 cells from nonregulatory B cells and support selective purification of B10 cells. Here we provide five methods for the characterization and activity evaluation of CD9
+ B cells. The first method is used for the preparation of leukocytes, the second and third are used for the characterization of CD9+ B cells, while the last two methods serve to evaluate CD9+ B-cell activities. Finally, we detail the purification of RNA from B10 cells and the performance of transcriptomic assays.- Published
- 2021
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