Knockout of the KH-Type Splicing Regulatory Protein Drives Glomerulonephritis in MRL-Faslpr Mice

Autor: Katharina Schrick, Myriam Meineck, Lisa Schmidtke, Hartmut Kleinert, Rudolf Käfer, Julia Weinmann-Menke, Wilfried Roth, Svenja Otten, Sabrina Saurin, Andrea Pautz, Fabian Gather
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Cells
Volume 10
Issue 11
Cells, Vol 10, Iss 3167, p 3167 (2021)
ISSN: 2073-4409
DOI: 10.3390/cells10113167
Popis: KH-type splicing regulatory protein (KSRP) is an RNA-binding protein that promotes mRNA decay and thereby negatively regulates cytokine expression at the post-transcriptional level. Systemic lupus erythematosus (SLE) is an autoimmune disease characterized by dysregulated cytokine expression causing multiple organ manifestations
MRL-Faslpr mice are an established mouse model to study lupus disease pathogenesis. To investigate the impact of KSRP on lupus disease progression, we generated KSRP-deficient MRL-Faslpr mice (MRL-Faslpr/KSRP−/− mice). In line with the predicted role of KSRP as a negative regulator of cytokine expression, lupus nephritis was augmented in MRL-Faslpr/KSRP−/− mice. Increased infiltration of immune cells, especially of IFN-γ producing T cells and macrophages, driven by enhanced expression of T cell-attracting chemokines and adhesion molecules, seems to be responsible for worsened kidney morphology. Reduced expression of the anti-inflammatory interleukin-1 receptor antagonist may be another reason for severe inflammation. The increase of FoxP3+ T cells detected in the kidney seems unable to dampen the massive kidney inflammation. Interestingly, lymphadenopathy was reduced in MRL-Faslpr/KSRP−/− mice. Altogether, KSRP appears to have a complex role in immune regulation
however, it is clearly able to ameliorate lupus nephritis.
Databáze: OpenAIRE
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