Characterization of Dendritic Cells and Myeloid-Derived Suppressor Cells Expressing Major Histocompatibility Complex Class II in Secondary Lymphoid Organs in Systemic Lupus Erythematosus-Prone Mice
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Fecha
2024-12
Profesor/a Guía
Facultad/escuela
Idioma
en_US
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Editor
Multidisciplinary Digital Publishing Institute (MDPI)
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Licencia CC
Atribución/Reconocimiento 4.0 Internacional
Licencia CC
https://creativecommons.org/licenses/by/4.0/deed.es
Resumen
Systemic lupus erythematosus (SLE) is an autoimmune disease characterized by self-antibody production and widespread inflammation affecting various body tissues. This disease is driven by the breakdown of immune tolerance, which promotes the activation of autoreactive B and T cells. A key feature of SLE is dysregulation in antigen presentation, where antigen-presenting cells (APCs) play a central role in perpetuating immune responses. Dendritic cells (DCs) are highly specialized for antigen presentation among APCs. At the same time, myeloid-derived suppressor cells (MDSCs) can also express MHC-II molecules, although their role in SLE is less understood. Utilizing the SLE model, MRL/MpJ-Faslpr/J, we determined the presence of different phenotypes of DCs and MDSCs expressing MHC-II in secondary lymphoid organs, along with the gene expression of ICOSL, CD80 and CD86 in the spleen. Our study determined that the most abundant population of APCs in secondary lymphoid organs corresponds to cDC CD103−CD11b+ MHC-II+ throughout SLE development. Additionally, ICOSL expression increased over time, becoming more preponderant in week 16 in the SLE model, which could indicate that it is a crucial pathway for the development and progression of the pathology. In week 16, we observed a positive correlation between M-MDSC MHC-II and IFN-γ-producing CD4+ T cells.
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Indexación (Scopus)
Palabras clave
co-stimulatory molecules, dendritic cells (DCs), innate immunity, major histocompatibility complex class II (MHC-II), MRL/MpJ-Faslpr/J, myeloid-derived suppressor cells (MDSCs), systemic lupus erythematosus (SLE)
Citación
International Journal of Molecular Sciences Volume 25, Issue 24 December 2024 Article number 13604
DOI
10.3390/ijms252413604