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Related Experiment Videos

EAPII interacts with ETS1 and modulates its transcriptional function.

Huiping Pei1, John S Yordy, Qixin Leng

  • 1Laboratory of Cancer Genomics, Hollings Cancer Center, Medical University of South Carolina, Charleston, SC 29425, USA.

Oncogene
|May 14, 2003
PubMed
Summary
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A novel protein, ETS1-associated protein II (EAPII), interacts with ETS1 and modulates its function. EAPII inhibits epithelial cancer cell migration, highlighting its role in regulating ETS1 activity.

Area of Science:

  • Molecular Biology
  • Cell Biology

Background:

  • Ets proteins are transcription factors regulating diverse cellular processes.
  • ETS1 is crucial for differentiation, lymphoid development, invasion, and angiogenesis.
  • ETS1 functions are likely modulated by interacting proteins.

Purpose of the Study:

  • To identify novel proteins interacting with ETS1.
  • To characterize the function and interaction of ETS1-associated protein II (EAPII).

Main Methods:

  • Yeast two-hybrid screening to identify interacting proteins.
  • In vitro and in vivo interaction assays.
  • Indirect immunofluorescence for protein localization.
  • Transcriptional activity assays.
  • Cell migration and viability assays.

Related Experiment Videos

Main Results:

  • A novel ETS1-interacting protein, EAPII, was identified.
  • EAPII interacts with ETS1, ETS2, and FLI1.
  • EAPII is localized to the nucleus.
  • EAPII negatively regulates ETS1 transcriptional activity and AP-1 synergy.
  • EAPII re-expression inhibits epithelial cancer cell migration without affecting viability.

Conclusions:

  • EAPII is a novel modulator of ETS1 transcriptional activity.
  • EAPII regulates specific ETS1 functions, including the inhibition of cancer cell migration.
  • EAPII represents a potential target for understanding and manipulating ETS1-driven processes.