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Updated: Feb 27, 2026
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Isolation and Ex Vivo Culture of Vδ1+CD4+γδ T Cells, an Extrathymic αβT-cell Progenitor
Published on: December 7, 2015
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Human T-Cell Development and Thymic Egress: An Infectious Disease Perspective
Rachel S Resop1,2, Christel H Uittenbogaart1,2,3,4
1Department of Microbiology, Immunology, and Molecular Genetics, David Geffen Medical School at UCLA, Los Angeles, CA 90095.
Summary
Understanding T-cell egress from the thymus is key for immunology and HIV research. This study investigates sphingosine-1-phosphate (S1P) receptors in human T-cell emigration, using humanized mouse models.
Area of Science:
- Immunology
- Cell Biology
- Molecular Biology
Background:
- T-cell egress from the thymus is critical for adaptive immunity.
- Mechanisms of T-cell emigration are not fully understood, impacting basic immunology and diseases like HIV.
- Sphingosine-1-phosphate (S1P) signaling is implicated in T-cell egress in mice.
Purpose of the Study:
- To investigate the expression and function of S1P receptors in human T-cell egress.
- To characterize alterations in S1P receptor expression and function in infectious diseases.
- To utilize humanized murine models for studying T-cell emigration.
Main Methods:
- Humanized murine models were employed to study T-cell egress.
- Analysis of sphingosine-1-phosphate (S1P) receptor expression and function in the human thymus.
- Characterization of S1P receptor dynamics in the context of infectious diseases.
Main Results:
- Sphingosine-1-phosphate (S1P) receptors are crucial for mature naïve CD4 SP T-cell egress from the human thymus.
- Changes in S1P receptor expression and function were observed in infectious disease models.
- Humanized murine models provide a platform for studying these mechanisms.
Conclusions:
- S1P receptor signaling is a key regulator of T-cell emigration from the human thymus.
- Understanding S1P receptor function in T-cell egress is vital for advancing immunology and immunopathology.
- This research opens avenues for novel therapeutic strategies targeting T-cell-mediated diseases.
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