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Updated: Jan 6, 2026
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Cells and Secretions of the Pancreas
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ITF2 prevents activation of the β-catenin-TCF4 complex in colon cancer cells and levels decrease with tumor
Hyun-Woo Shin1, Hyunsung Choi2, Daeho So3
1Department of Pharmacology, Seoul National University College of Medicine, Seoul, Korea; Ischemic/Hypoxic Disease Institute, Seoul National University College of Medicine, Seoul, Korea; Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea.
Gastroenterology
|May 22, 2014
Summary
Immunoglobulin transcription factor 2 (ITF2) suppresses colorectal cancer by inhibiting the beta-catenin pathway. Loss of ITF2 promotes tumor growth and is linked to poorer patient outcomes.
Area of Science:
- Oncology
- Molecular Biology
- Cancer Research
Background:
- Immunoglobulin transcription factor 2 (ITF2) has conflicting roles in cancer, with prior belief in promoting neoplastic transformation.
- Recent findings suggest ITF2 may suppress colon carcinogenesis, necessitating further investigation.
Purpose of the Study:
- To investigate the roles of ITF2 in colorectal cancer cell lines.
- To determine the impact of ITF2 on tumor formation and growth in mice.
- To correlate ITF2 expression with clinical outcomes in patients with colorectal cancer.
Main Methods:
- Quantified ITF2, beta-catenin, and c-Myc levels in human colorectal tumors via immunohistochemistry.
- Analyzed ITF2's regulation of beta-catenin and T-cell factor (TCF) using molecular assays.
- Assessed xenograft tumor growth in mice with altered ITF2 expression levels.
- Correlated ITF2 expression with patient outcomes using colorectal carcinoma tissue arrays.
Main Results:
- ITF2 levels were decreased and c-Myc levels increased in carcinomas compared to adenomas.
- ITF2 negatively regulated the beta-catenin-TCF4 complex and its target genes in colorectal cancer cell lines.
- Overexpression of ITF2 reduced tumor cell proliferation and tumorigenic potential in mice.
- Loss of ITF2 in tumors correlated with poor patient outcomes and shorter survival times.
Conclusions:
- ITF2 inhibits beta-catenin-TCF4 complex activation and target gene transcription in colorectal cancer.
- Loss of ITF2 promotes colorectal cancer cell tumorigenicity and is associated with tumor progression.
- Reduced ITF2 expression is a potential biomarker for adverse clinical outcomes in colorectal cancer patients.
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