医学分子生物学杂志 ›› 2022, Vol. 19 ›› Issue (1): 56-61.doi: 10.3870/j.issn.1672-8009.2022.01.009

• 论著 • 上一篇    下一篇

结直肠癌中 Keratin 17 的表达及其临床预后价值

  

  1. 武汉大学中南医院胃肠外科 武汉市, 430071
  • 出版日期:2022-01-31 发布日期:2022-02-25

Expression of Keratin 17 in Colorectal Cancer and Its Clinical Prognostic Value 

  • Online:2022-01-31 Published:2022-02-25

摘要: 目的 分析角蛋白 17 (Keratin 17, KRT17) 在结直肠癌 ( colorectal cancer, CRC) 中的表达及 其临床预后价值。 方法 采用生物信息学方法分析 KRT17 在 CRC 数据库中的表达及预后价值; 进一步, 采用免疫组织化学技术检测 KRT17 蛋白在 95 对 CRC 临床样本组织中的表达水平, 并分析其表达与患者临 床病理特征及预后的相关性。 结果 生物信息分析发现, KRT17 在 CRC 组织中的表达水平显著高于正常组 织, 其表达与肿瘤病理类型、 淋巴结转移及 TNM 分期相关, 并预示较差的总生存期 (P均 < 0. 05)。 免疫组 化验证显示, 与癌旁组织相比, 蛋白在 CRC 组织中的表达显著上调 (t = 45. 704, P< 0. 001), 与生物信息 学分析结果保持一致; KRT17 高表达与肿瘤分化程度、 浸润深度、 淋巴结转移、 TNM 分期、 淋巴脉管浸润 及神经侵犯显著相关 (P均 < 0. 05)。生存分析显示, KRT17 高表达组 CRC 患者的总生存期显著低于低表达组 (χ 2 = 8. 510, P = 0. 004); 进一步的单因素和多因素分析结果表明, KRT17 高表达是影响 CRC 患者总生存期 的一个独立危险因素 (HR = 2. 015, 95 % CI: 1. 219 ~ 4. 457, P = 0. 018)。 结论 KRT17 在 CRC 组织中表达 显著上调, 且其高表达预示着肿瘤进展及不良预后, 有望成为 CRC 患者预后评估的生物标志物。 

关键词: 结直肠癌, Keratin 17, 生信分析, 免疫组织化学, 预后

Abstract: Objective To analyze the expression of Keratin 17 (KRT17) in colorectal cancer (CRC) and its clinical prognostic value. Methods Bioinformatics methods were employed to analyze the expression of KRT17 in the CRC database and its prognostic value. Furthermore, the expression level of KRT17 protein in 95 pairs of CRC samples was evaluated by immunohistochemistry (IHC), and the relationships between the KRT17 expression and clinicopathological features and prognosis of patients with CRC were investigated. Results Bioinformatics analysis revealed that the expression level of KRT17 in CRC tissues was significantly higher than that in normal tissues. The expression of KRT17 was correlated with tumor pathological type, lymph node metastasis, and TNM stage, and its overexpression predicted poor overall survival (allP< 0. 05). IHC showed that the expression of KRT17 protein was significantly up-regulated in CRC tissues as compared with that in adjacent-tumor tissues (t = 45. 704, P< 0. 001), which was consistent with the results from bioinformatics analysis. High expression of KRT17 was significantly correlated with tumor grade, depth of tumor invasion, lymph node metastasis, TNM stage, lymphovascular invasion, and perineural invasion (all P< 0. 05). Moreover, the survival analysis demonstrated that the overall survival of CRC patients with high expression of KRT17 was significantly lower than that of CRC patients with low expression of KRT17 (χ 2 = 8. 510, P = 0. 004), and further univariate and multivariate analyses indicated that high expression of KRT17 was an independent risk factor for overall survival of CRC patients (HR: 2. 015, 95 % CI: 1. 219-4. 457, P = 0. 018). Conclusion KRT17 is significantly up-regulated in CRC tissues, and its high expression predicts tumor progression and poor prognosis. KRT17 is expected to become a promising biomarker for prognosis evaluation of CRC patients.

Key words: colorectal cancer, Keratin 17, bioinformatics analysis, immunohistochemistry, prognosis 

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