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Relations among expression of CXCR4, histological patterns, and metastatic potential in adenoid cystic carcinoma of the head and neck

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Adenoid cystic carcinoma (ACC) may acquire a chemokine-mediated mechanism during the process of metastasis. To investigate the involvement of chemokines in metastasis from ACC, expression of CXCR4 in surgical specimens of ACC and two tumor lines transplantable to nude mice was examined immunohistochemically. In addition, the expression levels of CXCR4 protein and mRNA were examined by Western blotting and reverse-transcription polymerase chain reaction. Our results showed that patients whose tumors expressed high levels of CXCR4 had metastases to the regional lymph nodes and the lung, resulting in poor outcomes. ACCs showing a solid or cribriform pattern with distant metastasis were strongly positive for CXCR4, while those showing a tubular or cribriform pattern without metastasis were weakly positive for CXCR4. In the in vivo model, ACCY tumor showed increasing expression levels of CXCR4 with tumor growth, and the histological pattern changed from cribriform to solid. The histological pattern of ACCI, associated with spontaneous metastasis to the neck, changed from cribriform to undifferentiated carcinoma and was highly metastatic to the lung. This tumor showed high levels of CXCR4 protein and mRNA. These results suggest that CXCR4 expression, histological patterns, and metastatic potential are closely related in ACC.
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Document Type: Research Article

Affiliations: Department of Oral and Maxillofacial Surgery, Hyogo College of Medicine, Nishinomiya, Hyogo 663-8501, Japan

Publication date: January 1, 2008

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  • The International Journal of Oncology provides an international forum for the publication of the latest, cutting-edge research in the broad area of oncology and cancer treatment. The journal accepts original high quality works and reviews on all aspects of oncology research including carcinogenesis, metastasis, epidemiology, chemotherapy and viral oncology. Through fair and efficient peer review, the journal is dedicated to publishing top tier research in the field, offering authors rapid publication as well as high standards of copy-editing and production. The International Journal of Oncology is published on a monthly basis in both print and early online.
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