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Progenitor gene DLK1 might be an independent prognostic factor of liver cancer.

机译:祖基因DLK1可能是肝癌的独立预后因素。

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摘要

BACKGROUND: Delta-like 1 homolog (DLK1) is a marker for progenitor cells of the liver. The gene encoding DLK1 is expressed early during embryonic development but, importantly, it is also expressed in some human liver cancers. However, the prognostic value of the DLK1 gene has not been investigated. OBJECTIVES: To examine the association between the DLK1 gene and survival time and whether high levels of expression of DLK1 are a prognostic factor for liver cancer. METHODS: We evaluated 60 cases of primary liver cancer, and investigated the link between the expression of DLK1 and patient survival. Clinical characteristics of the cases used for our study, such as tumor size, differentiation and staging, are statistically evenly distributed. Using RT-PCR, western blotting and immunohistochemistry, we analyzed the expression of DLK1 in the tumor samples and evaluated the results statistically. RESULTS: DLK1 was expressed in 22 of the 60 cases (36.7%), and analysis of the survival of the patients revealed that DLK1-positive patients had a shorter survival time than DLK1-negative patients. Cox regression analysis also showed that DLK1 is a risk factor. However, DLK1 expression does not seem to correlate with other classic prognostic factors such as alpha-fetoprotein (AFP), tumor-node-metastasis (TNM) and vascular invasion, which implies that it is an independent prognostic factor.
机译:背景:Delta-like 1同源物(DLK1)是肝脏祖细胞的标志物。编码DLK1的基因在胚胎发育的早期就表达了,但重要的是,它在某些人类肝癌中也表达了。但是,尚未研究DLK1基因的预后价值。目的:研究DLK1基因与存活时间之间的关系以及DLK1高表达是否是肝癌的预后因素。方法:我们评估了60例原发性肝癌,并研究了DLK1的表达与患者生存之间的联系。本研究中所用病例的临床特征,例如肿瘤大小,分化和分期,在统计学上是均匀分布的。使用RT-PCR,免疫印迹和免疫组化,我们分析了DLK1在肿瘤样品中的表达,并对结果进行统计学评估。结果:60例中有22例(36.7%)表达了DLK1,对患者的生存率进行分析后发现,DLK1阳性患者的生存时间比DLK1阴性患者短。 Cox回归分析还显示DLK1是危险因素。但是,DLK1表达似乎与其他经典的预后因素如甲胎蛋白(AFP),肿瘤淋巴结转移(TNM)和血管浸润无关,这表明它是独立的预后因素。

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