Cited by 29Protein Tyrosine PhosphatasesGenomics and Chromatin DynamicsCytokine Signaling Pathways and Interactions

PU.1 Activates Transcription of SHP-1 Gene in Hematopoietic Cells

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Wlodarski, Pawel, Zhang, Qian, Liu, Xiaobin, Kasprzycka, Monika, Marzec, Michal, Wasik, Mariusz A.·2007·Journal of Biological Chemistry

Abstract

Protein-tyrosine phosphatase SHP-1 is the key negative regulator of numerous signaling pathways. SHP-1 is expressed in the hematopietic and epithelial cells as two structurally similar mRNA transcripts controlled by two different promoters designated P2 and P1, respectively. Whereas the transcriptional regulation of the SHP-1 gene P1 promoter has been partially elucidated, the structure and functional control of the P2 promoter remain unknown despite the critical role played by SHP-1 in the normal and malignant lymphoid and other hematopoetic cells. Using luciferase reporter assays with the set of constructs that contained a gradually truncated intron 1 of the SHP-1 gene, we identified the minimal (<120 bp) fragment that is able to fully activate expression of the reporter gene. Furthermore, we found that PU.1 (a member of the Ets transcription factor family that plays a crucial role in differentiation and function of the lymphoid and myeloid cells) binds to the identified P2 promoter both in vitro and in vivo. PU.1 also activates the promoter in the sequence specific manner and is critical for its expression as evidenced by the profound supression of the SHP-1 gene transcription upon the siRNA-mediated depletion of PU.1. These findings provide an insight into the structure of the hematopoietic cell-specific P2 promoter of the SHP-1 gene and identify PU.1 as the transcriptional activator of the P2 promoter.

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Crossref · 10.1074/jbc.m607526200

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Research works printed but not linked: 3

  1. Yi, 1992, Mol. Cell. Biol., 12, 836
  2. Oka, 2002, Cancer Res., 62, 6390
  3. O'Prey, 1993, Mol. Cell. Biol., 13, 6290

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Authors
Wlodarski, P., Zhang, Q., Liu, X., Kasprzycka, M., Marzec, M., & Wasik, M. A.
Affiliations
  • Department of Embryology (US)
  • University of Pennsylvania (US)
  • Medical University of Warsaw (PL)
Corresponding author
Wasik, Mariusz A.
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
2007-03
Volume
282
Issue
9
Pages
6316-6323
ISSN
0021-9258 (ISSN-L)
OpenAlex
W2089766428
Cited by
29
References
32
Citations by year
2025: 1 · 2023: 2 · 2021: 3 · 2020: 1 · 2016: 1 · 2015: 2 · 2014: 2 · 2013: 2 · 2012: 2
FWCI
1.09
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Tyrosine Phosphatases
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
  • Health Sciences › Medicine › Oncology › Cytokine Signaling Pathways and Interactions
Keywords
PU.1, SHP-1, protein tyrosine phosphatase, P2 promoter, transcriptional regulation, ETS transcription factors, hematopoietic cells, promoter structure
MeSH terms
Proto-Oncogene Protein Spi-1, Blood Cells, Humans, Luciferases, Lymphocytes, Promoter Regions, Genetic, Proto-Oncogene Proteins, Transfection, Transcriptional Activation

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