シミズ タツヤ   SHIMIZU Tatsuya
  清水 達也
   所属   研究施設 研究施設
   職種   教授
論文種別 原著
言語種別 英語
査読の有無 査読なし
表題 Ets-1 is involved in transcriptional regulation of the chick inducible nitric oxide synthase gene in embryonic ventricular myocytes.
掲載誌名 正式名:Molecular and cellular biochemistry
略  称:Mol Cell Biochem
ISSNコード:(0300-8177)0300-8177(Linking)
掲載区分国外
巻・号・頁 226(1-2),57-65頁
著者・共著者 Takahashi T†, Sugishita Y, Kinugawa K, Shimizu T, Yao A, Harada K, Matsui H, Nagai R
発行年月 2001/10
概要 In order to elucidate roles of Ets family of transcription factors in transcriptional activation of inducible nitric oxide synthase (iNOS) genes, we analyzed the chick iNOS gene expression in cultured chick embryonic ventricular myocytes (CEVM). Deletional analysis and site-directed mutagenesis demonstrated that both the Ets/PEA3 site (-221 to -216 bp) and the kappaB site (-101 to -93 bp) of the 5'-flanking region of the chick iNOS gene were involved in the maximal activation of the lipopolysaccharide (LPS)-induced expression of the reporter (luciferase) gene, although the proximal kappaB site played the more essential role. Electrophoretic mobility shift assay revealed that LPS augmented the nuclear protein bindings to the Ets/PEA3 as well as kappaB motifs. Ets-1, one of the Ets proteins, was suggested to be bound to the Ets/PEA3 oligonucleotide. By Northern blot analysis, LPS was shown to induce iNOS mRNA in CEVM, along with a preceding increase in the levels of c-ets-1 mRNA. Ets-1 may be involved in the iNOS gene transcription in CEVM, presumably through interacting with the NF-kappaB.
PMID 11768239