Mutations in ADAR1 cause Aicardi-Goutières syndrome associated with a type I interferon signature

Adenosine deaminases acting on RNA (ADARs) catalyze the hydrolytic deamination of adenosine to inosine in double-stranded RNA (dsRNA) and thereby potentially alter the information content and structure of cellular RNAs. Notably, although the overwhelming majority of such editing events occur in transcripts derived from Alu repeat elements, the biological function of non-coding RNA editing remains uncertain. Here, we show that mutations in ADAR1 (also known as ADAR) cause the autoimmune disorder Aicardi-Goutières syndrome (AGS). As in Adar1-null mice, the human disease state is associated with upregulation of interferon-stimulated genes, indicating a possible role for ADAR1 as a suppressor of type I interferon signaling. Considering recent insights derived from the study of other AGS-related proteins, we speculate that ADAR1 may limit the cytoplasmic accumulation of the dsRNA generated from genomic repetitive elements.

John H Livingston | Roberta Battini | Ivana Olivieri | Enrico Bertini | Simon C Lovell | Adeline Vanderver | Jonathan E. Dickerson | Tiong Y Tan | Prab Prabhakar | E. Bertini | A. Vanderver | Alison M. Male | S. Lovell | Y. Crow | S. Bhaskar | C. Bacino | W. Marques | R. Battini | S. Orcesi | Jean-Pierre Lin | M. O’Connell | P. Lebon | G. Rice | T. Briggs | I. Desguerre | F. Rozenberg | L. Brueton | E. Wassmer | P. Mclaughlin | L. Keegan | E. Fazzi | P. Prabhakar | E. Wakeling | Tamio Suzuki | Johanna L Schmidt | P. Lonlay | C. Mignot | K. Steindl | Pierre Lebon | Yanick J Crow | Jonathan E Dickerson | Gabriella M. A. Forte | M. Szynkiewicz | I. Olivieri | A. Heiberg | Elisa Fazzi | P. Brogan | Àngels Garcia-Cazorla | Sanjeev S Bhaskar | J. Livingston | Cyril Mignot | Ram Kumar | T. Tan | Mary A O'Connell | Liam P Keegan | Pascale de Lonlay | Elizabeth Whittaker | Flore Rozenberg | Niamh M. Mannion | Sam M Greenwood | Carlos A Bacino | Isabelle Desguerre | R. Robinson | E. Whittaker | Katharina Steindl | Wilson Marques | M. Kawaguchi | Paul A Brogan | Arvid Heiberg | Evangeline Wassmer | Gillian I Rice | Paul R Kasher | Gabriella M A Forte | Niamh M Mannion | Marcin Szynkiewicz | Massimiliano Zampini | Tracy A Briggs | Emma M Jenkinson | Louise A Brueton | Marialuisa Carpanelli | Corinne De Laet | Mireia del Toro | Masakazu Kawaguchi | Ram Kumar | Jean-Pierre S-M Lin | Charles M Lourenco | Alison M Male | Simona Orcesi | Magnhild Rasmussen | Robert A Robinson | William G van der Merwe | Grace Vassallo | Emma L Wakeling | Tamio Suzuki | Paul J McLaughlin | G. Vassallo | E. Jenkinson | M. Zampini | P. Kasher | Charles M Lourenço | M. Rasmussen | C. Laet | M. Toro | M. Carpanelli | À. García-Cazorla | W. V. D. Merwe | T. Tan

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