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Updated: Jun 2, 2026
07:33
In vitro Organoid Culture of Primary Mouse Colon Tumors
Published on: May 17, 2013
Integrin Beta-4 expression in colorectal-cancer
R Falcioni1, V Turchi, P Vitullo
1IST REGINA ELENA,CTR RIC SPERIMENTALE,ONCOGENESI MOLEC LAB,I-00158 ROME,ITALY. UNIV ROMA LA SAPIENZA,DIPARTIMENTO MED SPERIMENTALE,ROME,ITALY. UNIV FERRARA,IST CLIN CHIRURG,FERRARA,ITALY. UNIV FLORENCE,IST PATOL CHIRURG,FLORENCE,ITALY. UNIV G DANNUNZIO,IST PATOL UMANA,CHIETI,ITALY. IST REGINA ELENA,DIV CHIRURG 1,I-00158 ROME,ITALY.
International Journal of Oncology
|May 12, 2011
Summary
Integrin alpha 6 beta 4 expression increases in colorectal tumors, particularly in advanced stages and poorly differentiated lesions. This suggests microenvironmental factors influence its role in tumor progression.
Area of Science:
- Cell Biology
- Oncology
- Biochemistry
Background:
- Integrin alpha 6 beta 4 is crucial for epithelial interactions with basement membranes.
- Its expression is significantly altered during tumor progression, especially in carcinomas.
Purpose of the Study:
- To investigate the expression of the integrin alpha 6 beta 4 subunit in colorectal carcinomas and normal mucosa.
- To correlate beta 4 expression levels with clinical stage, differentiation, and tumor growth patterns.
Main Methods:
- Quantitative immunochemical assay and immunohistochemistry were used.
- Expression of the beta 4 subunit of integrin alpha 6 beta 4 was analyzed in 25 primary carcinomas and matching normal mucosae.
Main Results:
- Integrin alpha 6 beta 4 was expressed in all samples, with highest levels in high-stage (Dukes' C) tumors.
- Beta 4 reactivity inversely correlated with tumor differentiation.
- Expression patterns varied with tumor growth, showing strong expression in poorly differentiated areas and at the lumenal surface.
Conclusions:
- Integrin alpha 6 beta 4 expression in colorectal tumors is influenced by microenvironmental factors.
- Increased beta 4 expression is associated with high stage and poor differentiation in colorectal cancer.
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