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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Nuclear receptor related-1 protein ： ウィキペディア英語版 Nuclear receptor related-1 protein The Nuclear receptor related 1 protein (NURR1) also known as NR4A2 (nuclear receptor subfamily 4, group A, member 2) is a protein that in humans is encoded by the ''NR4A2'' gene. NURR1 is a member of the nuclear receptor family of intracellular transcription factors. NURR1 plays a key role in the maintenance of the dopaminergic system of the brain. Mutations in this gene have been associated with disorders related to dopaminergic dysfunction, including Parkinson's disease, schizophrenia, and manic depression. Misregulation of this gene may be associated with rheumatoid arthritis. Four transcript variants encoding four distinct isoforms have been identified for this gene. Additional alternate splice variants may exist, but their full-length nature has not been determined.〔(【引用サイトリンク】 url = http://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene&Cmd=ShowDetailView&TermToSearch=4929 )〕 ==Nurr1 and Inflammation== Research has been conducted on Nurr1’s role in inflammation, and may provide important information in treating disorders caused by dopaminergic neuron disease. Inflammation in the CNS can result from activated microglia (macrophage analogs for the central nervous system) and other pro-inflammatory factors, such as bacterial lipopolysaccharide (LPS). LPS binds to toll-like receptors (TLR), which induces inflammatory gene expression by promoting signal-dependent transcription factors. To determine which cells are dopaminergic, experiments measured the enzyme tyrosine hydroxylase (TH), which is needed for dopamine synthesis. It has been shown that Nurr1 protects dopaminergic neurons from LPS-induced inflammation, by reducing inflammatory gene expression in microglia and astrocytes. When a short hairpin for Nurr1 was expressed in microglia and astrocytes, these cells produced inflammatory mediators, such as TNFa, NO synthase and IL-1β, supporting the conclusion that reduced Nurr1 promotes inflammation and leads to cell death of dopaminergic neurons. Nurr1 interacts with the transcription factor complex NF-κB-p65 on the inflammatory gene promoters. However, Nurr1 is dependent on other factors to be able to participate in these interactions. Nurr1 needs to be sumoylated and its co-regulating factor, glycogen synthase kinase 3, needs to be phosphorylated for these interactions to occur. Sumolyated Nurr1 recruits CoREST, a complex made of several proteins that assembles chromatin-modifying enzymes. The Nurr1/CoREST complex inhibits transcription of inflammatory genes. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Nuclear receptor related-1 protein」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.