徳島大学 教育・研究者情報データベース(EDB)

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著作: [田原 強]/Sun Jiying/Nakanishi Katsuyuki/Yamamoto Masafumi/Mori Hajime/Saito Takeshi/Fujita Hiroyoshi/Igarashi Kazuhiko/Taketani Shigeru/Heme positively regulates the expression of beta-globin at the locus control region via the transcriptional factor Bach1 in erythroid cells./[The Journal of Biological Chemistry]

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EID
377949
EOID
1012539
Map
0
LastModified
2021年8月10日(火) 12:57:44
Operator
大家 隆弘
Avail
TRUE
Censor
承認済
Owner
田原 強
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種別 必須 学術論文(審査論文)
言語 必須 英語
招待 推奨
審査 推奨
カテゴリ 推奨
共著種別 推奨
学究種別 推奨
組織 推奨
著者 必須
  1. 田原 強([徳島大学.先端研究推進センター.バイオイメージング研究部門])
    役割 任意
    貢献度 任意
    学籍番号 推奨
  2. (英) Sun Jiying
    役割 任意
    貢献度 任意
    学籍番号 推奨
  3. (英) Nakanishi Katsuyuki
    役割 任意
    貢献度 任意
    学籍番号 推奨
  4. (英) Yamamoto Masafumi
    役割 任意
    貢献度 任意
    学籍番号 推奨
  5. (英) Mori Hajime
    役割 任意
    貢献度 任意
    学籍番号 推奨
  6. (英) Saito Takeshi
    役割 任意
    貢献度 任意
    学籍番号 推奨
  7. (英) Fujita Hiroyoshi
    役割 任意
    貢献度 任意
    学籍番号 推奨
  8. (英) Igarashi Kazuhiko
    役割 任意
    貢献度 任意
    学籍番号 推奨
  9. (英) Taketani Shigeru
    役割 任意
    貢献度 任意
    学籍番号 推奨
題名 必須

(英) Heme positively regulates the expression of beta-globin at the locus control region via the transcriptional factor Bach1 in erythroid cells.

副題 任意
要約 任意

(英) The transcription factor Bach1 heterodimerizes with small Maf proteins to repress Maf recognition element (MARE)-dependent gene expression. The repressor activity of Bach1 is inhibited by the direct binding of heme. To investigate the involvement of Bach1 in the heme-dependent regulation of the expression of the beta-globin gene, mouse erythroleukemia (MEL) cells were cultured with succinylacetone (SA), a specific inhibitor of heme biosynthesis, and the level of beta-globin mRNA was examined. A marked decrease of beta-globin mRNA in SA-treated cells was observed, and this decrease was reversed by the addition of hemin. An iron chelator, desferrioxamine, also lowered the level of beta-globin mRNA. The heme-dependent expression of beta-globin is a transcriptional event since the expression of the human beta-globin gene promoter-reporter gene containing the microlocus control region (microLCR) was inhibited when human erythroleukemia K562 cells and MEL cells were cultured with SA. Hemin treatment restored the decrease in promoter activity caused by SA. The control of the microLCR-beta-globin promoter reporter gene by heme was dependent on DNase I-hypersensitive site 2 (HS2), which contains MARE. The MARE binding activity of Bach1 in K562 and MEL cells increased upon SA treatment, and the increase was diminished by the treatment with hemin. Transient expression of Bach1 suppressed the microLCR activity, and this repressor activity was cancelled by treatment with hemin. The expression of a mutated Bach1 lacking heme-binding sites led to a loss in the heme responsiveness of the microLCR. Furthermore, chromatin immunoprecipitation experiments revealed that Bach1 bound to the MARE of HS2 increased by the treatment of MEL cells with SA, and this was cancelled by hemin. We propose that heme positively regulates the beta-globin gene expression by blocking the interaction of Bach1 with the MARE in the LCR.

キーワード 推奨
  1. (英) Animals
  2. (英) Basic-Leucine Zipper Transcription Factors
  3. (英) Binding Sites
  4. (英) Blotting, Northern
  5. (英) Cell Line
  6. (英) Chelating Agents
  7. (英) Chromatin
  8. (英) Deferoxamine
  9. (英) Dimerization
  10. (英) Erythroid Cells
  11. (英) Fanconi Anemia Complementation Group Proteins
  12. (英) Gene Deletion
  13. (英) Gene Expression Regulation
  14. (英) Genes, Reporter
  15. (英) Globins
  16. (英) Heme
  17. (英) Heptanoates
  18. (英) Humans
  19. (英) Iron
  20. (英) K562 Cells
  21. (英) Leukemia, Erythroblastic, Acute
  22. (英) Mice
  23. (英) Mice, Inbred BALB C
  24. (英) Plasmids
  25. (英) Precipitin Tests
  26. (英) Promoter Regions, Genetic
  27. (英) Protein Binding
  28. (英) RNA
  29. (英) RNA, Messenger
  30. (英) Transcription Factors
発行所 推奨
誌名 必須 The Journal of Biological Chemistry([The American Society for Biochemistry and Molecular Biology])
(pISSN: 0021-9258, eISSN: 1083-351X)
ISSN 任意 0021-9258
ISSN: 0021-9258 (pISSN: 0021-9258, eISSN: 1083-351X)
Title: The Journal of biological chemistry
Title(ISO): J Biol Chem
Publisher: American Society for Biochemistry and Molecular Biology
 (NLM Catalog  (Scopus  (CrossRef (Scopus information is found. [need login])
必須 279
必須 7
必須 5480 5487
都市 任意
年月日 必須 2003年 12月 1日
URL 任意
DOI 任意 10.1074/jbc.M302733200    (→Scopusで検索)
PMID 任意 14660636    (→Scopusで検索)
CRID 任意
WOS 任意
Scopus 任意
評価値 任意
被引用数 任意
指導教員 推奨
備考 任意
  1. (英) PublicationType: Journal Article

  2. (英) PublicationType: Research Support, Non-U.S. Gov't