Overexpression of CLN3 contributes to tumour progression and predicts poor prognosis in hepatocellular carcinoma.

Overexpression of CLN3 contributes to tumour progression and predicts poor prognosis in hepatocellular carcinoma.
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CLN3 的过度表达有助于肿瘤进展并预测肝细胞癌的不良预后。

DOI:
10.1016/j.suronc.2018.12.003
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发表时间:
2019-03
期刊:
Surg Oncol
影响因子:
--
通讯作者:
Luo Huayou
Luo Huayou
中科院分区:
其他
文献类型:
--
作者:
Xu Yu;Wang Huawei;Zeng Yujian;Tian Yan;Shen Zongwen;Xie Zhenrong;Chen Fengrong;Sun Liang;Shu Ruo;Li Pengpeng;Chen Cheng;Yu Juehua;Wang Kunhua;Luo Huayou

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蜡样脂褐质沉积症3(CLN 3)的异常表达已在多种人类恶性肿瘤中报道。然而,CLN 3在肝细胞癌(HCC)的进展和预后中的作用仍然未知。在这项研究中,我们发现CLN 3在HCC临床样本和HCC衍生细胞系中频繁上调,并与APF血清水平≥20 μg/L、肿瘤大小≥5 cm、多个肿瘤和无包囊显著相关。Kaplan-Meier显示,CLN 3上调预测HCC患者的无复发生存期(RFS)和总生存期(OS)时间较短。考克斯回归分析显示,CLN 3上调是RFS和OS的独立危险因素。功能研究表明,CLN 3表达的敲低在体外和体内均显著抑制HCC细胞的生长和转移。机制研究显示EGFR/PI 3 K/AKT通路对于介导CLN 3功能是必需的。总之,我们的研究结果提供了第一个证据表明CLN 3有助于肿瘤进展和转移,并为HCC提供了潜在的预后预测因子和治疗靶点。
The aberrant expression of ceroid-lipofuscinosis 3 (CLN3) has been reported in a variety of human malignancies. However, the role of CLN3 in the progression and prognosis of hepatocellular carcinoma (HCC) remains unknown. In this study, we found that CLN3 was frequently upregulated in HCC clinical samples and HCC-derived cell lines and was significantly correlated with an APF serum level ≥20 μg/L, a tumour size ≥5 cm, multiple tumours, and the absence of encapsulation. Kaplan-Meier showed that CLN3 upregulation predicted shorter recurrence-free survival (RFS) and overall survival (OS) time in HCC patients. Cox regression analysis revealed that CLN3 upregulation was an independent risk factor for RFS and OS. A functional study demonstrated that the knockdown of CLN3 expression profoundly suppressed the growth and metastasis of HCC cells both in vitro and in vivo. Mechanistic investigation revealed that the EGFR/PI3K/AKT pathway was essential for mediating CLN3 function. In conclusion, our results provide the first evidence that CLN3 contributes to tumour progression and metastasis and offer a potential prognostic predictor and therapeutic target for HCC.
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