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Measuring lymphocyte kinetics in tropical field settings.
Hala Ghattas1, Bakary M Darboe, Diana L Wallace
1Department of Cellular and Molecular Medicine, St George's Hospital Medical School, Cranmer Terrace, London SW17 0RE, UK.
Summary
Tracking T-cell turnover using 6,6-2H2-glucose is feasible in tropical settings. This method helps understand lymphocyte homeostasis and adaptive immunity regulation in regions with high T-cell-affecting disease prevalence.
Area of Science:
- Immunology
- Cell Biology
- Tropical Medicine
Background:
- In-vivo lymphocyte DNA labeling with 6,6-2H2-glucose aids T-cell turnover studies for homeostasis.
- Tropical settings require adapted protocols for T-cell studies due to prevalent diseases.
Purpose of the Study:
- To adapt and validate T-cell turnover studies using 6,6-2H2-glucose in a tropical setting (The Gambia).
- To enable non-intravenous label administration and FACS-independent cell sorting for T-cell subpopulation analysis.
Main Methods:
- Oral administration of 6,6-2H2-glucose to healthy adults in The Gambia.
- Isolation of T-cell subpopulations (CD8+CD45R0+, CD8-CD45R0+, CD8+CD45R0-, CD8-CD45R0-) using plastic adherence and magnetic cell sorting (MACS).
- Quantification of T-cell proliferation and disappearance via gas chromatography-mass spectrometry.
Main Results:
- Higher T-cell turnover observed in memory (CD45R0+) than naïve (CD45R0-) subsets.
- Association found between recent T-cell proliferation and increased susceptibility to cell death.
- Study demonstrated feasibility of cell kinetics research in tropical environments.
Conclusions:
- Adapted T-cell turnover measurement protocols are effective in tropical settings.
- This research advances understanding of adaptive immunity regulation in response to infections.
- Findings support the application of cell kinetics research in diverse geographical locations.