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GIPC1 regulates MACC1-driven metastasis.

Franziska Siegel1, Hannes Schmidt2, Manisha Juneja1

  • 1Department Translational Oncology of Solid Tumors, Experimental and Clinical Research Institute, Charité Universitätsmedizin Berlin, and Max-Delbrück-Center for Molecular Medicine, Berlin, Germany.

Frontiers in Oncology
|December 25, 2023
PubMed
Summary
This summary is machine-generated.

GIPC1 acts as both a protein partner and transcription factor for MACC1, driving cancer metastasis. Its dual role in colorectal cancer progression and patient survival highlights its importance in metastasis.

Keywords:
GIPC1MACC1patient survival prognosisprotein-protein interactiontranscription factor

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Area of Science:

  • Molecular Oncology
  • Cancer Biology
  • Translational Research

Background:

  • Understanding molecular networks is crucial for developing cancer metastasis intervention strategies.
  • MACC1 is a prognostic indicator for metastasis formation and survival in cancer patients.
  • MACC1 influences gene transcription, cell motility, invasion, proliferation, tumor growth, and metastasis.

Purpose of the Study:

  • To investigate the role of GIPC1 in MACC1-driven metastasis.
  • To elucidate the molecular mechanisms by which GIPC1 contributes to cancer progression.

Main Methods:

  • Yeast-two-hybrid assay, mass spectrometry, co-immunoprecipitation, and peptide array to identify GIPC1 binding partners.
  • Chromatin immunoprecipitation and electrophoretic mobility shift assay to determine GIPC1's role as a transcription factor on the MACC1 promoter.
  • In vitro and in vivo analyses using GIPC1/MACC1-manipulated cell lines and human colorectal cancer (CRC) tissues.

Main Results:

  • GIPC1 binds to MACC1 and its paralogue SH3BP4, and acts as a transcription factor for the MACC1 promoter.
  • GIPC1 knockdown reduces MACC1 expression, cell migration, invasion, tumor growth, and metastasis.
  • GIPC1 expression correlates with MACC1 in human CRC and has prognostic value for metastasis and survival.

Conclusions:

  • GIPC1 possesses a dual function, acting as both a protein interaction partner and transcription factor for MACC1.
  • This dual role of GIPC1 is critical for tumor progression and cancer metastasis.
  • Combined analysis of MACC1 and GIPC1 expression improves patient survival prognosis in colorectal cancer.