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Application of Multiparametric Flow Cytometry Panels to Study Lymphocyte Subpopulations in Tuberculin-Positive Cattle
Anabelle Manzo-Sandoval1, Laura Jaramillo-Meza1, Roxana Olguín-Alor2
1Laboratorio de Inmunología, Centro Nacional de Investigación Disciplinaria en Salud Animal e Inocuidad, Instituto de Investigaciones Forestales, Agrícolas y Pecuarias, Carretera Federal México-Toluca Km 15.5, Ciudad de México 05110, Mexico.
Flow cytometry (FC) is a valuable tool in veterinary immunology. New multicolor panels were developed to identify T cell subpopulations in dairy heifers, aiding in bovine tuberculosis research and vaccine development.
Area of Science:
- Veterinary Immunology
- Cellular Immunology
- Flow Cytometry
Background:
- Flow cytometry (FC) is crucial in veterinary research for studying immune responses and vaccine efficacy in cattle.
- Limited availability of fluorochrome-conjugated antibodies for bovine antigens restricts multiparametric analysis.
- This study addresses the need for advanced FC tools in bovine immunology.
Purpose of the Study:
- To design and implement two five-color flow cytometry panels for T cell analysis in dairy heifers.
- To identify T cell populations and subpopulations in peripheral blood mononuclear cells.
- To investigate differences in T cell profiles related to bovine tuberculosis status.
Main Methods:
- Development of two novel five-color flow cytometry panels.
- Analysis of peripheral blood mononuclear cells from dairy heifers.
- Comparison of T cell subpopulations between tuberculin-positive and negative heifers.
Main Results:
- The developed panels successfully identified T cell subpopulations.
- Significant differences in T cell subpopulations were observed between tuberculin-positive and negative heifers.
- Overexpression of CD25+ and CD45RO+ T cells was noted in tuberculin-positive heifers post-stimulation with Mycobacterium bovis CFPE.
Conclusions:
- The implemented multicolor flow cytometry panels are effective for analyzing bovine T cell subpopulations.
- These panels can be valuable tools for immunopathogenesis studies and vaccine development in cattle.
- The strategy holds potential for application in other veterinary species.
