日本語
 
Help Privacy Policy ポリシー/免責事項
  詳細検索ブラウズ

アイテム詳細

  Activation and induction of NUR77/NURR1 in corticotrophs by CRH/cAMP: Involvement of calcium, protein kinase A, and MAPK pathways

Kovalovsky, D., Refojo, D., Liberman, A., Hochbaum, D., Pereda, M., Coso, O., Stalla, G., Holsboer, F., & Arzt, E. (2002). Activation and induction of NUR77/NURR1 in corticotrophs by CRH/cAMP: Involvement of calcium, protein kinase A, and MAPK pathways. Molecular Endocrinology, 16(7), 1638-1651.

Item is

基本情報

表示: 非表示:
資料種別: 学術論文
その他のタイトル : Mol. Endocrinol.

ファイル

表示: ファイル

関連URL

表示:

作成者

表示:
非表示:
 作成者:
Kovalovsky, D1, 著者
Refojo, D1, 著者
Liberman, AC1, 著者
Hochbaum, D1, 著者
Pereda, MP1, 著者
Coso, OA1, 著者
Stalla, GK1, 著者
Holsboer, F1, 著者
Arzt, E1, 著者
所属:
1Max Planck Institute of Psychiatry, Max Planck Society, ou_1607137              

内容説明

表示:
非表示:
キーワード: -
 要旨: Nur factors are critical for proopiomelanocortin (POMC) induction by CRH in corticotrophs, but the pathways linking CRH to Nur are unknown. In this study we show that in AtT-20 corticotrophs CRH and cAMP induce Nur77 and Nurr1 expression and transcription at the NurRE site by protein kinase A (PKA) and calcium-dependent and -independent mechanisms. Calcium pathways depend on calmodulin kinase II (CAMKII) activity, and calcium-independent pathways are accounted for in part by MAPK activation (Rap1/B-Raf/MAPK-ERK kinase/ ERK1/2), demonstrated by the use of molecular and pharmacological tools. AtT-20 corticotrophs express B-Raf, as do other cells in which cAMP stimulates MAPK. CRH/cAMP stimulated ERK2 activity and increased transcriptional activity of a Gal4-Elk1 protein, which was blocked by overexpression of dominant negative mutants and kinase inhibitors and stimulated by expression of B-Raf. The MAPK kinase inhibitors did not affect Nur77 and Nurr1 mRNA induction but blocked CRH or cAMP-stimulated Nur transcriptional activity. Moreover, MAPK stimulated phosphorylation and transactivation of Nur77. The functional impact of these pathways was confirmed at the POMC promoter. In conclusion, in AtT-20 corticotrophs the CRH/cAMP signaling that leads to Nur77/Nurr1 mRNA induction and transcriptional activation, and thus POMC expression, is dependent on protein kinase A and involves calcium/calmodulin kinase II (Nur induction/activation) and MAPK calcium-dependent and - independent (Nur phosphorylation-activation) pathway

資料詳細

表示:
非表示:
言語: eng - English
 日付: 2002-07
 出版の状態: 出版
 ページ: -
 出版情報: -
 目次: -
 査読: 査読あり
 識別子(DOI, ISBNなど): eDoc: 4128
ISI: 000176630900017
 学位: -

関連イベント

表示:

訴訟

表示:

Project information

表示:

出版物 1

表示:
非表示:
出版物名: Molecular Endocrinology
  出版物の別名 : Mol. Endocrinol.
種別: 学術雑誌
 著者・編者:
所属:
出版社, 出版地: -
ページ: - 巻号: 16 (7) 通巻号: - 開始・終了ページ: 1638 - 1651 識別子(ISBN, ISSN, DOIなど): ISSN: 0888-8809