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Synergistic cooperation of TFE3 and Smad proteins in TGF-β-induced transcription of the plasminogen activator inhibitor-1 gene

Open access
Hua, Xianxin, Liu, Xuedong, Ansari, Dominic O., Lodish, Harvey F.·1998·Genes & Development

Abstract

Members of the TGF-β superfamily influence a broad range of biological activities including stimulation of wound healing and inhibition of cell growth. TGF-β signals through type I and II receptor serine/ threonine kinases and induces transcription of many genes including plasminogen activator inhibitor-1 (PAI-1). To identify proteins that participate in TGF-β-induced gene expression, we developed a novel retrovirus-mediated expression cloning strategy; and using this approach, we established that transcription factor μE3 (TFE3) is involved in TGF-β-induced activation of the PAI-1 promoter. We showed that TFE3 binds to an E-box sequence in PE2, a 56-bp promoter fragment of the PAI-1 promoter, and that mutation of this sequence abolishes both TFE3 binding as well as TGF-β-dependent activation. TFE3 and Smad3 synergistically activate the PE2 promoter and phosphorylated Smad3 and Smad4 bind to a sequence adjacent to the TFE3-binding site in this promoter. Binding of both TFE3 and the Smad proteins to their cognate sequences is indispensable for TGF-β-inducible activation of the PE2 promoter. Hence, TFE3 is an important transcription factor in at least one TGF-β-activated signal transduction pathway.

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Metadata

Authors
Hua, X., Liu, X., Ansari, D. O., & Lodish, H. F.
Venue
Genes & Development
Published
1998-10-01
Volume
12
Issue
19
Pages
3084-3095
ISSN
  • 0890-9369 (ISSN-L)
  • 1549-5477
OpenAlex
W2098097317
Cited by
283
References
2
Type
posted content
Language
en
Open access
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CoChat. (2026). Citation check: Synergistic cooperation of TFE3 and Smad proteins in TGF-β-induced transcription of the plasminogen activator inhibitor-1 gene. https://app.cochat.ai/papers/10.1101/gad.12.19.3084
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Hua, X., Liu, X., Ansari, D. O., & Lodish, H. F. (1998). Synergistic cooperation of TFE3 and Smad proteins in TGF-β-induced transcription of the plasminogen activator inhibitor-1 gene. Genes & Development. https://doi.org/10.1101/gad.12.19.3084

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