Inactivation of the KSRP gene modifies collagen antibody induced arthritis

Molecular Immunology
Rudolf KäferAndrea Pautz

Abstract

The KH type splicing regulatory protein (KSRP) is a nucleic acid binding protein, which negatively regulates the stability and/or translatability of many mRNA species encoding immune-relevant proteins. As KSRP is expressed in immune cells including T and B cells, neutrophils, macrophages and dendritic cells, we wanted to analyze its importance for the development of autoimmune diseases. We chose collagen antibody-induced arthritis (CAIA) as an appropriate autoimmune disease mouse model in which neutrophils and macrophages constitute the main effector cell populations. We compared arthritis induction in wild type (WT) and KSRP-/- mice and paws were taken for histological sections and qPCR analysis. Furthermore, we determined the frequencies of spleen immune cells by flow cytometry. Cytokine levels in spleen cell supernatants were determined by cytometric bead array analyses (CBA). After CAIA induction we unexpectedly observed in WT animals much stronger swelling of the paws than in KSRP-/- mice. In accordance, histological staining of paw sections of KSRP-/- animals revealed much lower frequencies of infiltrating immune cells in the joints compared to WT animals. Furthermore, CAIA-treatment resulted in reduced expression of seve...Continue Reading

Citations

Nov 9, 2018·FASEB Journal : Official Publication of the Federation of American Societies for Experimental Biology·Weiwei LiYunpeng Zhao
Apr 3, 2020·International Journal of Molecular Sciences·Yunhui Jia, Yuanyuan Wei
Sep 13, 2019·Journal of Immunology Research·Rudolf KäferAndrea Pautz
Feb 13, 2021·Annual Review of Immunology·Shizuo Akira, Kazuhiko Maeda
Oct 13, 2019·Journal of Autoimmunity·Niki LourouDimitris L Kontoyiannis

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