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Isolation of Group 2 Innate Lymphoid Cells from Mouse Nasal Mucosa to Detect the Expression of CD226
Published on: May 10, 2022
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Costimulatory Molecule CD226 Regulates Atopic Dermatitis in a Mouse Model
Wei Qiao1, Chujun Duan1, Jingchang Ma2
1Institute of Medical Research, Northwestern Polytechnical University, Xi'an, China; Department of Immunology, Fourth Military Medical University, Xi'an, China.
The Journal of Investigative Dermatology
|February 7, 2024
Summary
CD226 deficiency exacerbates atopic dermatitis by impairing regulatory T cells. This study reveals CD226
Area of Science:
- Immunology
- Dermatology
- Molecular Biology
Background:
- Atopic dermatitis (AD) is a chronic inflammatory skin disease.
- The role of CD226 in AD pathogenesis is not well understood.
Purpose of the Study:
- To investigate the function of CD226 in a mouse model of atopic dermatitis.
- To elucidate the mechanisms by which CD226 influences immune responses in AD.
Main Methods:
- Utilized a 2,4-dinitrochlorobenzene (DNCB)-induced mouse model of atopic dermatitis.
- Generated global and CD4+ T-cell specific CD226-deficient mice.
- Performed in vitro assessments of regulatory T (Treg) cell function.
- Analyzed Treg cell infiltration, proliferation, and apoptosis in vivo.
Main Results:
- CD226 deficiency significantly worsened AD symptoms, including skin inflammation and immune cell infiltration.
- Loss of CD226 increased pro-inflammatory cytokine and chemokine expression.
- CD226 was found to modulate TGFβ-mediated Treg cell differentiation and proliferation.
- Specific deletion of CD226 in Treg cells led to more severe dermatitis and reduced Treg cell numbers.
- CD226 deficiency promoted Treg cell apoptosis via caspase 3 activation.
Conclusions:
- CD226 plays a protective role in atopic dermatitis.
- CD226 regulates Treg cell function and survival.
- Targeting CD226 may offer a therapeutic strategy for atopic dermatitis by modulating Treg cells.
