| Literature DB >> 26429911 |
Xuerui Luo1, Jia Nie1, Shuaiwei Wang1, Zuojia Chen1, WanJun Chen2, Dan Li1, Hui Hu3, Bin Li4.
Abstract
Poly(ADP-ribose) polymerase 1 (PARP-1) is an ADP-ribosylating enzyme participating in diverse cellular functions. The roles of PARP-1 in the immune system, however, have not been well understood. Here we find that PARP-1 interacts with FOXP3 and induces its poly(ADP-ribosyl)ation. By using PARP-1 inhibitors, we show that reduced poly(ADP-ribosyl)ation of FOXP3 results in not only FOXP3 stabilization and increased FOXP3 downstream genes but also enhanced suppressive function of regulatory T cells. Our results suggest that PARP-1 negatively regulates the suppressive function of Treg cells at the posttranslational level via FOXP3 poly(ADP-ribosyl)ation. This finding has implications for developing PARP-1 inhibitors as potential agents for the prevention and treatment of autoimmune diseases.Entities:
Keywords: ADP-ribosylation; T cell; forkhead box P3 (FOXP3); immunosuppression; inhibitor; posttranscriptional regulation; regulatory T cell
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Year: 2015 PMID: 26429911 PMCID: PMC4661383 DOI: 10.1074/jbc.M115.661611
Source DB: PubMed Journal: J Biol Chem ISSN: 0021-9258 Impact factor: 5.157