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Prognostic significance of nemo-like kinase (NLK) expression in patients with gallbladder cancer

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Tumor Biology


Nemo-like kinase (NLK), a serine/threonine protein kinase, has been implicated in tumor development and progression, and plays an important role in diverse signaling pathways by phosphorylating a variety of transcription factors. Recent studies demonstrated that altered expression of NLK was observed in various types of human cancers. However, the clinical significance of NLK expression in gallbladder cancer (GBC) remains largely unknown. In this study, we focused on the clinical significance of NLK in GBC, and found that nuclear NLK protein overexpression was frequently detected in GBC tissues. The overexpression of NLK was significantly correlated with histological grade, TNM stage, and perineural invasion. The results of Kaplan–Meier analysis indicated that a high expression level of NLK resulted in a significantly poorer prognosis of GBC patients (P = 0.002). Furthermore, multivariate Cox regression analysis showed that high NLK expression was an independent prognostic factor for GBC patients (HR = 3.077). In conclusion, overexpression of NLK is closely related to progression of GBC, and NLK could be used as a potential prognostic marker for GBC patients.

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This work was supported by Xinhua hospital (No. 12YJ01), the Shanghai Committee of Science and Technology (Nos. 12JC1406700, 12410705900, 12401905800), the National Natural Science Foundation of China (Nos. 81172029, 81272402), the Foundation of Shanghai Outstanding Academic Leaders (No.11XD1403800), the National High Technology Research and Development Program (863 Program; No.2012AA022606), and the Medical and Engineering Cross-Foundation of Shanghai Jiaotong University (No. YG2011ZD07).

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Correspondence to Yingbin Liu.

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Maolan Li and Shenglai Zhang, contributed equally to this work.

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Li, M., Zhang, S., Wang, Z. et al. Prognostic significance of nemo-like kinase (NLK) expression in patients with gallbladder cancer. Tumor Biol. 34, 3995–4000 (2013).

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