Regulation of YB-1 gene expression by GATA transcription factors

Hisayuki Yokoyama, Hideo Harigae, Shinichiro Takahashi, Satoru Takahashi, Kazumichi Furuyama, Mitsuo Kaku, Masayuki Yamamoto, Takeshi Sasaki

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

GATA-1 is a transcription factor essential for erythroid cell development, and knockdown of GATA-1 gene results in maturation arrest and transformation of erythroblasts. To clarify the mechanism that gives rise to this abnormal phenotype, genes that are aberrantly expressed in the spleen of heterozygous GATA-1 knockdown mutant mouse (referred to as GATA-1 mutant mouse) were identified by using cDNA array. One of these genes, YB-1, was found to be highly expressed in the spleen of GATA-1 mutant mouse. Reporter and electrophoretic mobility shift assays revealed that the proximal GATA element in 5′-UTR region of YB-1 gene functions positively in K562 cells. Furthermore, both GATA-1 and GATA-2, which were transiently expressed in COS-7 cells, bound to this element and activated the YB-1 promoter through this element. These results suggest that YB-1 functions under the regulation of GATA factors in erythroid differentiation and aberrant expression of YB-1 gene may result in dyserythropoiesis.

Original languageEnglish
Pages (from-to)140-145
Number of pages6
JournalBiochemical and biophysical research communications
Volume303
Issue number1
DOIs
Publication statusPublished - 2003 Mar 28

Keywords

  • Erythropoiesis
  • GATA factors
  • YB-1 gene

ASJC Scopus subject areas

  • Biophysics
  • Biochemistry
  • Molecular Biology
  • Cell Biology

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