High nuclear/cytoplasmic ratio of Cdk1 expression predicts poor prognosis in colorectal cancer patients
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- 作者：Wen-Wei Sung ; Yueh-Min Lin ; Pei-Ru Wu ; Hsu-Heng Yen ; Hung-Wen Lai…
- 关键词：Cyclin ; dependent kinase 1 ; Prognosis ; Colorectal cancer
- 刊名：BMC Cancer
- 出版年：2014
- 出版时间：December 2014
- 年：2014
- 卷：14
- 期：1
- 全文大小：1,193 KB
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文摘
Background Cdk1 (cyclin-dependent kinase 1) is critical regulator of the G2-M checkpoint. Cyclin-dependent kinase pathways are considered possible targets for cancer treatment; however, the prognostic role of Cdk1 in colorectal cancer is still controversial. Therefore, we attempted to determine the impact of Cdk1 on the clinical outcome of colorectal cancer patients to further identify its role in colorectal cancer. Methods Cdk1 immunoreactivity was analyzed by immunohistochemistry (IHC) in 164 cancer specimens from primary colorectal cancer patients. The medium follow-up time after surgery was 3.7?years (range: 0.01 to 13.10?years). The prognostic value of Cdk1 on overall survival was determined by Kaplan-Meier analysis and Cox proportional hazard models. Results All samples displayed detectable Cdk1 expression with predominant location in the cytoplasm and nucleus. A high Cdk1 nuclear/cytoplasmic (N/C) expression ratio was correlated with poor overall survival (5-year survival rate: 26.3% vs 46.9%, N/C ratio ?.5 vs N/C ratio Conclusions We suggest that Cdk1 N/C expression ratio determined by IHC staining could be an independent prognostic marker for colorectal cancer.