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자료유형
학술저널
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대한병리학회 Journal of Pathology and Translational Medicine Journal of Pathology and Translational Medicine 제26권 제11호
발행연도
2013.1
수록면
427 - 431 (5page)

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The abnormal expression of c-kit is implicated in the pathogenesis of a variety of solid tumors. The Rb pathway and p53 act as cell cycle regulators. The purpose of this study was to assess the expression of c-kit, Rb, p53, p16 and cyclin D1 and their relationship to clinical and pathological parameters in patients with non-small cell lung carcinomas (NSCLCs). Methods : Tissue microarrays consisting of 2 mm cores from the corresponding blocks were constructed from 54 NSCLCs. Immunohistochemical staining for c-kit, Rb, p53, p16 and cyclin D1 was performed. C-kit immunostaining was considered positive if ≥≥10% of tumor cells were immunoreactive along the membrane and/or in cytoplasm. For Rb, p53, p16 and cyclin D1, tumor cells showing a nuclear staining pattern were interpreted as positive. Results : We found that c-kit was expressed in 13 (24%) cases, Rb was lost in 39 (72%) cases, p53 was expressed in 28 (52%) cases, p16 was lost in 42 (78%) cases and cyclin D1 was expressed in 33 (61%) cases. The c-kit expression was significantly higher in adenocarcinoma (39%) than in squamous cell carcinoma (8%). We did not find any correlation between c-kit, Rb, p53, p16 and cyclin D1 expression and clinicopathological parameters such as: age, tumor size, lymph node involvement, disease stage and distant metastasis. There was a direct correlation between p53 expression and Rb loss. Conclusions : These results suggest that c-kit may be a useful therapeutic target for patients with c-kit positive tumors, and that the disruption of Rb and p53 pathways may play an important role in the development and progression of NSCLCs.

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