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Related Concept Videos

T Cell Types and Functions01:24

T Cell Types and Functions

When T cells with CD4 markers are activated, they give rise to two types of effector cells: helper T cells and regulatory T cells. Meanwhile, T cells with CD8 markers differentiate into effector cytotoxic T cells. The differentiation of CD4 T cells into helper T cell subsets, such as Th1, Th2, and Th17 cells, is dependent on the antigen type, antigen-presenting cell, and regulatory cytokines.
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
Immune Response Against Viral Pathogens01:29

Immune Response Against Viral Pathogens

The immune system's response to viral infections is a complex and coordinated process involving natural killer (NK) cells, T cell-mediated responses, and antibody-mediated responses.
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...

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Related Experiment Video

Updated: Jun 15, 2026

Phenotypic and Functional Analysis of Activated Regulatory T Cells Isolated from Chronic Lymphocytic Choriomeningitis Virus-infected Mice
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Regulatory T cells inhibit T cell proliferation and decrease demyelination in mice chronically infected with a

Kathryn Trandem1, Daniela Anghelina, Jingxian Zhao

  • 1University of Iowa, Iowa City, IA 52242, USA.

Journal of Immunology (Baltimore, Md. : 1950)
|March 9, 2010
PubMed
Summary

Regulatory T cells (Tregs) reduce demyelination in mice infected with mouse hepatitis virus (JHMV). Transferring Tregs decreases inflammation and clinical symptoms, suggesting a therapeutic potential for virus-induced demyelination.

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Area of Science:

  • Neuroimmunology
  • Virology

Background:

  • Mouse hepatitis virus (JHMV) infection in mice causes demyelinating diseases resembling multiple sclerosis.
  • Demyelination is an immune-mediated process, as evidenced by its absence in immunodeficient RAG1(-/-) mice unless reconstituted with T cells.

Purpose of the Study:

  • To investigate the therapeutic potential of regulatory T cells (Tregs) in mitigating JHMV-induced demyelination.
  • To determine if Tregs can reduce inflammation and clinical disease severity in JHMV-infected mice.

Main Methods:

  • Adoptive transfer of Tregs into JHMV-infected C57BL/6 and RAG1(-/-) mice.
  • Assessment of clinical scores, weight loss, and demyelination.
  • Analysis of T cell proliferation, dendritic cell activation, and cytokine/chemokine production in draining lymph nodes.

Main Results:

  • Treg transfer significantly reduced weight loss, clinical scores, and demyelination in both mouse models.
  • Tregs exerted anti-inflammatory effects in draining lymph nodes, not the central nervous system.
  • Tregs suppressed T cell proliferation, dendritic cell activation, and proinflammatory mediator release without inducing apoptosis.

Conclusions:

  • Regulatory T cells can effectively ameliorate virus-induced demyelination by dampening the inflammatory response.
  • The anti-inflammatory actions of Tregs, even when acting peripherally, are crucial for reducing central nervous system pathology.
  • Modulating the anti-inflammatory environment holds promise for treating demyelinating diseases.