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Th17/Treg balance is regulated by myeloid-derived suppressor cells in experimental autoimmune myocarditis.
Xiong, Xin; Yu, Mengjia; Wang, Dinghang; Wang, Yange; Cheng, Longxian.
Afiliación
  • Xiong X; Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
  • Yu M; Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
  • Wang D; Department of Emergency, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
  • Wang Y; Department of Cardiology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.
  • Cheng L; Laboratory of Cardiovascular Immunology, Institute of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
Immun Inflamm Dis ; 11(6): e872, 2023 06.
Article en En | MEDLINE | ID: mdl-37382257
OBJECTIVE: Autoimmune myocarditis is caused by both innate and adaptive immune responses. Many studies have found that myeloid-derived suppressor cells (MDSCs) suppress T-cell responses and reduce immune tolerance, while MDSCs may serve as a key player in inflammatory responses and pathogenesis in variety of autoimmune diseases. However, research into the role of MDSCs in experimental autoimmune myocarditis (EAM) remains lacking. METHODS AND RESULTS: We discovered that the expansion of MDSCs in EAM was closely related to the severity of myocardial inflammation. At an early stage of EAM, both adoptive transfer (AT) and selective depletion of MDSCs could inhibit the expression of IL-17 in CD4+ cells and downregulate the Th17/Treg ratio, alleviating excessive inflammation of EAM myocarditis. In another experiment, in addition, MDSCs transferred after selective depletion could increase IL-17 and Foxp3 expressions in CD4+ cells, as well as the Th17/Treg ratio, contributing to the aggravation of myocardial inflammation. MDSCs promoted the Th17 cell induction under Th17-polarizing conditions in vitro but suppressed Treg expansion. CONCLUSION: These findings suggest that MDSCs play a plastic role in sustaining mild inflammation in EAM by shifting Th17/Treg balance.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Células Supresoras de Origen Mieloide / Miocarditis Límite: Humans Idioma: En Revista: Immun Inflamm Dis Año: 2023 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Células Supresoras de Origen Mieloide / Miocarditis Límite: Humans Idioma: En Revista: Immun Inflamm Dis Año: 2023 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido