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Lymphocytes subsets in normal individuals: analysis by four color immunofluorescence and flow cytometry on whole
V Schiavon1, P Roth, W E Bolton
1Inserm U448, Faculté de Médecine de Créteil, France.
Insights
This study precisely defines human lymphocyte subsets using flow cytometry and immunofluorescence. Findings reveal distinct molecular profiles for T cell and NK cell subsets, aiding in immune system characterization.
Area of Science:
- Immunology
- Cell Biology
Background:
- Accurate identification of human lymphocyte subsets is crucial for understanding immune responses.
- Flow cytometry and immunofluorescence are key techniques in cellular immunology.
Purpose of the Study:
- To precisely define human lymphocyte subsets using advanced immunofluorescence techniques.
- To systematically analyze T cell and Natural Killer (NK) cell subsets based on CD molecule expression.
Main Methods:
- Utilized four-color immunofluorescence analysis and flow cytometry on whole blood from 20 healthy volunteers.
- Employed monoclonal antibodies targeting 18 distinct CD molecules.
- Analyzed data using 14 different four-color immunofluorescence combinations.
Main Results:
- Identified significant differences in the expression of CD26, CD27, CD28, CD38, CD45RA, CD45RO, CD57, S6F1, BY55, and CD101 between CD3+CD8+ and CD3+CD8- T cell subsets.
- Demonstrated distinct expression patterns of CD16, CD56, CD57, S6F1, and BY55 among minor NK cell subsets (CD2+CD3-CD8+, CD2-CD3-CD8+, CD2+CD3-CD8-, CD2-CD3-CD8-).
Conclusions:
- The study provides a detailed molecular definition of human T cell and NK cell subsets.
- These findings contribute to a more refined understanding of immune cell heterogeneity and function.
Abstract:
In order to precisely define human lymphocytes subsets, we used four color immunofluorescence analysis and flow cytometry. We report here the results of systematic studies performed on whole blood from 20 normal volunteers. This was performed using monoclonal antibodies recognizing 18 different CD molecules and analyzed here into 14 different 4-color immunofluorescence combinations. This showed that among T cells, the two major CD3+CD8+ and CD3+CD8- subsets differed greatly in the percentage of cells expressing CD26, CD27, CD28, CD38, CD45RA, CD45RO, CD57, S6F1, BY55, CD101 and their respective combination representing an array of subsets. Furthermore the minor NK subsets, i.e. CD2+CD3-CD8+, CD2-CD3-CD8+, CD2+CD3-CD8-, CD2-CD3-CD8- also differed in percentages of cells expressing CD16, CD56, CD57, S6F1, BY55 and their combinations.
