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04:39
Generation of a Mouse Spontaneous Autoimmune Thyroiditis Model
Published on: March 17, 2023
CD8+ T cells induce thyroid epithelial cell hyperplasia and fibrosis
Shiguang Yu1, Yujiang Fang, Tumenjargal Sharav
1Department of Veterans Affairs Research Service, Columbia, MO 65212, USA. syu@astate.edu
Journal of Immunology (Baltimore, Md. : 1950)
|January 12, 2011
Summary
CD8(+) T cells promote thyroid epithelial cell hyperplasia and fibrosis, a novel function in autoimmune disease. Targeting these cells or TNF-α may treat these conditions.
Area of Science:
- Immunology
- Autoimmune Diseases
- Cell Biology
Background:
- CD8(+) T cells are typically known for cytotoxicity in autoimmune inflammation.
- Their role in inducing epithelial cell proliferation and fibrosis is not well-established.
Purpose of the Study:
- To investigate a novel function of CD8(+) T cells in inducing thyroid epithelial cell hyperplasia and fibrosis.
- To explore the role of TNF-α in this process.
Main Methods:
- Utilizing IFN-γ(-/-) NOD.H-2h4 SCID mice models.
- Administering activated CD8(+) T cells and evaluating thyroid tissue.
- Assessing the impact of TNF-α and anti-TNF-α treatments.
Main Results:
- Activated CD8(+) T cells induced thyroid epithelial cell hyperplasia, proliferation, and fibrosis in the absence of CD4(+) T cells.
- CD8(+) T cells promoted proliferation rather than cytotoxicity.
- TNF-α produced by T cells was identified as a key mediator, with anti-TNF-α inhibiting these effects.
Conclusions:
- CD8(+) T cells have a novel function in promoting autoimmune thyroid disease through epithelial cell proliferation and fibrosis.
- Targeting CD8(+) T cells and/or TNF-α presents a potential therapeutic strategy for epithelial cell hyperplasia and fibrosis.
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