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In vitro Organoid Culture of Primary Mouse Colon Tumors
Published on: May 17, 2013
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Integrin α1 subunit is up-regulated in colorectal cancer
Salah Boudjadi1, Julie C Carrier, Jean-François Beaulieu
1Laboratory of Intestinal Physiopathology, Department of Anatomy and Cell Biology, Faculty of Medicine and Heath Sciences, Université de Sherbrooke, 3001 12th Avenue N, Sherbrooke, QC J1H 5N4, Canada. Jean-Francois.Beaulieu@USherbrooke.ca.
Biomarker Research
|November 21, 2013
Summary
Integrins, specifically the α1 subunit, are newly found to be highly expressed in colorectal tumors and surrounding cells. This suggests α1β1 integrin plays a significant role in colorectal cancer progression.
Area of Science:
- Cell Biology
- Molecular Biology
- Oncology
Background:
- Colorectal cancer is a major cause of cancer death.
- Integrins regulate cell signaling, adhesion, migration, and proliferation.
- The α1 integrin subunit is implicated in cancer cell proliferation and migration.
Purpose of the Study:
- To investigate the expression and role of the α1 integrin subunit in colon mucosa and colorectal cancer.
- To determine if α1 expression differs between tumor tissues and normal tissues.
Main Methods:
- Analysis of α1 expression in colon mucosa and colorectal tumors.
- Quantitative assessment of α1 mRNA levels in tumor and matched margin tissues.
- Immunohistochemical analysis of α1 protein expression in tumor cells and surrounding reactive cells.
Main Results:
- α1 is expressed in the basolateral domain of colon crypt proliferative cells and myofibroblasts.
- 86% of colorectal tumors showed higher α1 mRNA levels than matched margins.
- α1 staining was significantly higher in tumor cells (65%) and surrounding reactive cells (97%) compared to normal epithelial cells (23%).
Conclusions:
- The α1 integrin subunit is present in the colon mucosa and its expression is upregulated in colorectal cancer.
- Findings suggest α1β1 integrin is actively involved in colorectal cancer progression.
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