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Phenotypic and Functional Analysis of Activated Regulatory T Cells Isolated from Chronic Lymphocytic Choriomeningitis Virus-infected Mice
Published on: June 22, 2016
Regulatory T cells and allergic disease
Kayhan T Nouri-Aria1, Stephen R Durham
1Department of Allergy & Clinical Immunology, National Heart & Lung Institute at Imperial College London, Exhibition Road, London, UK. k.nouri-aria@imperial.ac.uk
Regulatory T cells (T(Regs)) are crucial for immune balance and suppressing allergic responses. Activating these cells offers a promising strategy for treating allergies, autoimmune diseases, and preventing organ transplant rejection.
Area of Science:
- Immunology
- Allergy Research
- Cellular Immunology
Background:
- Allergic diseases like asthma and eczema are increasingly prevalent globally.
- Regulatory T cells (T(Regs)) are vital for maintaining immune homeostasis and preventing autoimmunity.
- Impaired T(Reg) function is linked to the exacerbation of allergic conditions.
Purpose of the Study:
- To explore the role of T(Regs) in immune regulation and allergic disease.
- To investigate the mechanisms by which T(Regs) suppress immune responses.
- To evaluate the potential of T(Reg) activation for therapeutic interventions.
Main Methods:
- Analysis of CD4(+)CD25(+) T(Regs) and IL-10-producing Tr-1 cells.
- Investigation of cell-cell contact-dependent and cytokine-dependent suppressive mechanisms (TGF-beta, IL-10, CLTA-4).
- Assessment of adoptive T(Reg) transfer in disease models and allergen immunotherapy outcomes.
Main Results:
- Depletion of T(Regs) in mice led to autoimmune diseases.
- T(Regs) and Tr-1 cells suppress Th2 responses to allergens in healthy individuals, with attenuated function in allergic states.
- Allergen immunotherapy correlates with increased IL-10 and TGF-beta producing T(Regs)/Tr-1 cells, suppressing allergic inflammation.
Conclusions:
- T(Regs) play a critical role in suppressing allergic and autoimmune responses.
- Mechanisms involve both direct cell contact and soluble factors like TGF-beta and IL-10.
- Targeted activation and expansion of antigen-specific T(Regs) represent a novel therapeutic avenue for allergic diseases, autoimmunity, and transplantation tolerance.
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