A Flow Cytometry Assay to Identify Immune Cell Subsets in Peripheral Blood Mononuclear Cells
Published: February 29, 2024
Abstract
Source: Torchia, M. L. G., et al. Discrimination of Seven Immune Cell Subsets by Two-fluorochrome Flow Cytometry. J. Vis. Exp. (2019)
This video demonstrates a flow cytometry-based technique using two fluorochromes to identify CD4+ and CD8+ T cells, γδ T cells, B cells, natural killer (NK) cells, and monocytes in human peripheral blood mononuclear cells (PBMCs). Upon incubating the cells with fluorochrome-conjugated antibodies against the surface markers, the cell subsets are identified using an optimal flow cytometric gating strategy.
Protocol
All procedures involving sample collection have been performed in accordance with the institute's IRB guidelines. NOTE: This protocol has been tested on freshly or frozen isolated peripheral blood cells and whole blood. 1. Cell Staining NOTE: Choosing pairs of fluorochromes with virtually no spectral overlap is important to reduce the spread of data due to the high spillover of a fluoro…
Representative Results
Figure 1: Representative antibody titration. (A) The dot plot shows CD8 expression on fresh PBMC stained with the indicated concentration of the antibody. (B) The table represents the median and standard deviation of fluorescent intensity of the CD8+, median fluorescent intensity CD8- population, and the derived stain index for each concentration tested. (<strong…
Disclosures
The authors have nothing to disclose.
Materials
| CD3 | BD Biosciences | 562426 | Antibody for staining RRID: AB_11152082 |
| CD56 | BD Biosciences | 562751 | Antibody for staining RRID: AB_2732054 |
| TCRgd | BD Biosciences | 331217 | Antibody for staining RRID: AB_2562316 |
| CD4 | BD Biosciences | 555347 | Antibody for staining RRID: AB_395752 |
| CD8 | BD Biosciences | 555367 | Antibody for staining RRID: AB_395770 |
| CD14 | BD Biosciences | 555398 | Antibody for staining RRID: AB_395799 |
| CD19 | BD Biosciences | 555413 | Antibody for staining RRID: AB_395813 |
| CD3 | BD Biosciences | 555335 | Antibody for staining RRID: AB_398591 |
| CD56 | BD Biosciences | 555518 | Antibody for staining RRID: AB_398601 |
| TCRgd | BD Biosciences | 331211 | Antibody for staining RRID: AB_1089215 |
| CCR7 | Biolegend | 353217 | Antibody for staining RRID: AB_10913812 |
| CD45RA | BD Biosciences | 560674 | Antibody for staining RRID: AB_1727497 |
| CCR4 | BD Biosciences | 561034 | Antibody for staining RRID: AB_10563066 |
| CCR6 | BD Biosciences | 353419 | Antibody for staining RRID: AB_11124539 |
| CXCR3 | BD Biosciences | 561730 | Antibody for staining RRID: AB_10894207 |
| CD57 | BD Biosciences | 562488 | Antibody for staining RRID: AB_2737625 |
| HLA-DR | BD Biosciences | 563083 | Antibody for staining RRID: AB_2737994 |
| CD16 | BD Biosciences | 563784 | Antibody for staining RRID: AB_2744293 |
| Dead cells | Life technologies | L-23105 | Live/dead discrimination |
| 96-well V-bottom plate | Thermo fisher | 249570 | plate for staining |
| FACSAria IIu Cell Sorter | BD Biosciences | Flow cytometer | |
| FCS Express 6 | De Novo Software | FACS analysis | |
| Graphpad Prism | GraphPad software | Data analysis |
Tags
Cite This Article
A Flow Cytometry Assay to Identify Immune Cell Subsets in Peripheral Blood Mononuclear Cells. J. Vis. Exp. (Pending Publication), e21987, doi: (2024).