alexa Growth factors, extracellular matrix components and cell adhesion molecules in Warthin’s tumor


Diagnostic Pathology: Open Access

Author(s): Yasuhiro Nakamura, Munehiko Yamamoto, Kikuo Sakamoto, Keiko Ohta, Akemi Umeda

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We studied expressions of various growth factors, their receptors, cell adhesion molecules and extracellular matrix components in Warthin's tumor of the salivary gland with immunohistochemistry and reverse transcriptase-polymerase chain reaction (RT-PCR). Various growth factors and their receptors, such as transforming growth factor-alpha (TGF-alpha), heparin-binding epidermal growth factor-like growth factor (HB-EGF), TGF-beta2, TG-beta3, insulin-like growth factor (IGF)-I and -II, vascular endothelial growth factor (VEGF), EGF receptor (EGFR), erb-B4, TGF-betaRI and II, Flt and Flk-1 and IGF receptor Ibeta, were found in epithelial cells and/or in some lymphoid cells. Fibronectin, laminin, collagen type IV and tenascin were found in stroma of the lymphoid tissue. Integrins such as alpha3beta1 and beta3, Thy-1, CD44 and VCAM-1 were also expressed in epithelial and/or lymphoid cells. These various proteins may interact and regulate the proliferation and cell attachment of both epithelial and lymphoid components in this unique tumor.

This article was published in Journal of Oral Pathology & Medicine and referenced in Diagnostic Pathology: Open Access

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