Clinicopathological significance of HuR expression in gallbladder carcinoma: with special emphasis on the implications of its nuclear and cytoplasmic expression

doi:10.1007/s13277-013-0872-2

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標題:	Clinicopathological significance of HuR expression in gallbladder carcinoma: with special emphasis on the implications of its nuclear and cytoplasmic expression
作者:	Sun, Ding-Ping Lin, Ching-Yih Tian, Yu-Feng Chen, Li-Tzong Lin, Li-Ching Lee, Sung-Wei Hsing, Chung-Hsi Lee, Hao-Hsien Shiue, Yow-Ling Huang, Hsuan-Ying Li, Chien-Feng Liang, Peir-In
貢獻者:	藥學系
關鍵字:	Hur Protein Gallbladder Cancer Immunohistochemistry Protein Localization
日期:	2013-10
上傳時間:	2014-05-26 10:44:16 (UTC+8)
出版者:	Springer
摘要:	Gallbladder carcinoma (GBC) is a relatively rare disease which pathogenesis is less clarified. Human antigen R (HuR), a RNA-binding protein, modulates the expressions of various cancer-related proteins by stabilizing or regulating the transcription of the corresponding messenger RNA. The significance of HuR expression in a large cohort with GBCs is yet to be evaluated. In total, 164 cases of GBC were selected, and immunostaining for HuR was performed. HuR nuclear (HuR-N) expression and HuR cytoplasmic (HuR-C) expression were evaluated by using a histochemical score. The results of HuR expression were correlated with various clinicopathological factors, disease-specific survival (DSS), and disease-free survival (DFS) in 161 patients with follow-up data. HuR-N overexpression was strongly associated with high histological grade (p = 0.001), vascular invasion (p < 0.001), and high Ki-67 labeling index (p < 0.001). HuR-C overexpression was significantly related to higher primary tumor status (p < 0.001), advanced tumor stage (p < 0.001), histological type (p = 0.006), high histological grade (p < 0.001), vascular and perineurial invasion (p < 0.001 and p = 0.002, respectively), tumor necrosis (p = 0.042), and high Ki-67 labeling index (p = 0.002). Besides, HuR-C overexpression also correlates with HuR-N overexpression (p < 0.001) and cyclin A overexpression (p = 0.026). HuR-N overexpression correlated with poor DFS (p = 0.0348) in univariate analysis, but HuR-C overexpression strongly correlated with a worse DSS and DFS in both univariate (both p < 0.0001) and multivariate (DSS, p = 0.006; DFS, p = 0.001) analyses. Subcellular localization of HuR expression correlates with different adverse phenotypes of GBC. Besides, HuR-C overexpression is an independent prognostic factor for dismal DSS and DFS, suggesting its roles in tumorigenesis or carcinogenesis and as a potential prognostic marker of GBC.
關聯:	Tumor Biology, v.34 n.5 pp.3059-3069
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