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CD4(+) regulatory T cells in autoimmunity and allergy
Maria A Curotto de Lafaille1, Juan J Lafaille
1Program of Molecular Pathogenesis, Skirball Institute of Biomolecular Medicine, and Department of Pathology New York University School of Medicine, New York, NY 10016, USA. curotto@saturn.med.nyu.edu
Current Opinion in Immunology
|November 5, 2002
Summary
Regulatory T cells (Tregs) are crucial for immune homeostasis. Research reveals Tregs include multiple cell types, such as CD4(+)CD25(+) and CD4(+)CD25(-) cells, with distinct roles in immune regulation.
Area of Science:
- Immunology
- Cell Biology
Background:
- Regulatory T cells (Tregs) are vital for maintaining immune system homeostasis.
- Dysfunctional Tregs are implicated in autoimmune diseases and atopy.
- The term 'regulatory T cells' encompasses diverse cell populations.
Purpose of the Study:
- To explore the heterogeneity of regulatory T cell populations.
- To highlight recent advancements in understanding Treg biology and function.
- To investigate the role of specific molecules and cytokines in Treg induction and activity.
Main Methods:
- Analysis of CD4(+)CD25(+) and CD4(+)CD25(-) T cell populations.
- Investigation of tumor necrosis factor receptor (TNFR) family members (GITR, TRANCE-R/RANK) in Treg biology.
- Assessment of co-stimulatory molecules and cytokines (IL-10, IL-2) in Treg induction and function.
Main Results:
- CD4(+)CD25(+) and CD4(+)CD25(-) T cell populations exhibit potent regulatory activity.
- GITR and TRANCE-R/RANK play significant roles in Treg biology.
- High-avidity T cell receptor interactions facilitate the in vivo generation of both CD25(+) and CD25(-) Tregs.
Conclusions:
- Regulatory T cell populations are more diverse than previously understood.
- Specific molecular pathways and cell surface markers define distinct Treg subsets.
- Further research into Treg heterogeneity can inform therapeutic strategies for immune-related disorders.