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Deprecated: Implicit conversion from float 265.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Science 2015 ; 350 (6259): 455-9 Nephropedia Template TP
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The Ro60 Autoantigen Binds Endogenous Retroelements and Regulates Inflammatory Gene Expression #MMPMID26382853
Science 2015[Oct]; 350 (6259): 455-9 PMID26382853show ga
Autoantibodies target the RNA binding protein Ro60 in systemic lupus erythematosus (SLE) and Sjögren?s syndrome. However, whether Ro60 and its associated RNAs contribute to disease pathogenesis is unclear. We catalogued the Ro60-associated RNAs in human cell lines and found that among other RNAs, Ro60 bound an RNA motif derived from endogenous Alu retroelements. Alu transcripts were induced by type I interferon and stimulated proinflammatory cytokine secretion by human peripheral blood cells. Ro60 deletion resulted in enhanced expression of Alu RNAs and interferon-regulated genes. Anti-Ro60 positive SLE immune complexes contained Alu RNAs, and Alu transcripts were upregulated in SLE whole blood samples compared to controls. These findings establish a link between the lupus autoantigen Ro60, Alu retroelements and type I interferon.