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Published on: March 5, 2019
Molecular and functional profiling of memory CD8 T cell differentiation
Susan M Kaech1, Scott Hemby, Ellen Kersh
1Emory Vaccine Center and Department of Microbiology and Immunology, Emory University School of Medicine, 1510 Clifton Road, Atlanta, GA 30322, USA.
Cell
|January 16, 2003
Summary
Memory CD8 T cells progressively differentiate after viral infection. Precursors gain self-renewal and antigen recall abilities, developing into functional memory cells post-infection.
Area of Science:
- Immunology
- Cellular Biology
- Virology
Background:
- Understanding memory T cell formation is crucial for vaccine development and immunotherapy.
- CD8 T cells play a key role in adaptive immunity against viral infections.
Purpose of the Study:
- To investigate the developmental trajectory of memory CD8 T cells following viral infection.
- To characterize gene expression and functional changes during memory T cell differentiation.
Main Methods:
- Time-course analysis of gene expression in antigen-specific CD8 T cells during viral infection.
- Evaluation of functional properties, including self-renewal and antigen recall, of developing T cells.
Main Results:
- Gene expression continued to evolve post-viral clearance, correlating with functional shifts.
- Memory cell precursors identified at peak response lacked mature memory traits.
- These precursors gradually acquired self-renewal and rapid antigen recall capabilities.
Conclusions:
- Antigen-specific CD8 T cells undergo progressive differentiation into memory cells after viral infection.
- This study proposes a model for the stepwise acquisition of memory T cell characteristics.
- Findings provide insights into the dynamic process of T cell memory formation.
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