betway必威登陆网址 (betway.com )学报››2022,Vol. 43››Issue (5): 360-364.DOI:10.3969/j.issn.2097-0005.2022.05.008

• 临床研究 •上一篇下一篇

EZH2在AML1/ETO阳性急性髓系白血病中的表达及临床意义

陈荣华(), 王艳梅, 石瑞平

  1. 郑州人民医院血液内科,河南 郑州 450002
  • 收稿日期:2021-09-10出版日期:2022-05-25发布日期:2022-06-09
  • 作者简介:陈荣华,硕士,副主任医师,主要从事老年急性髓系白血病的临床研究工作,E-mail:chenrhrm69@163.com

The expression and clinical significance of EZH2 in AML1/ETO-positive acute myeloid leukemia

Ronghua CHEN(), Yanmei WANG, Ruiping SHI

  1. Department of Hematology,Zhengzhou People's Hospital,Zhengzhou 450002,China
  • Received:2021-09-10Online:2022-05-25Published:2022-06-09

摘要: 目的

探讨果蝇zeste基因增强子人类同源物2(enhancer of zeste homolog 2,EZH2)在AML1/ETO融合基因(AML1/ETO)阳性急性髓系白血病(acute myelogenous leukemia,AML)中的表达及临床意义。

方法

选取2015年1月至2018年1月郑州人民医院血液内科收治的AML1/ETO阳性AML患者40例作为AML1/ETO阳性组,另选取同期AML1/ETO阴性AML患者40例作为对照组。采用实时荧光定量聚合酶链反应(fluorescence quantitive polymerase chain reaction,FQ-PCR)检测骨髓单个核细胞(bone marrow mononuclear cells,BM-MNCs)中EZH2 mRNA的表达水平。随访3年,采用Kaplan-Meier法分析EZH2 mRNA表达水平与AML1/ETO阳性AML患者预后的关系,采用Cox回归分析影响AML1/ETO阳性AML患者无复发生存和总生存的危险因素。

结果

AML1/ETO阳性组患者BM-MNCs中EZH2 mRNA表达水平高于对照组,差异有统计学意义(P< 0.05)。AML1/ETO阳性AML患者BM-MNCs中EZH2 mRNA表达水平与白细胞计数、外周血幼稚细胞比例、髓外浸润、染色体核型预后分层及首次诱导治疗后疗效有关,且与白细胞计数、外周血幼稚细胞比例均呈正相关,差异均有统计学意义(P< 0.05)。Kaplan-Meier曲线显示,EZH2 mRNA低表达组3年总生存率明显高于EZH2 mRNA高表达组(P< 0.05)。Cox回归分析显示,首次诱导治疗后疗效及EZH2 mRNA表达情况是影响AML1/ETO阳性AML患者无复发生存和总生存的独立危险因素(P< 0.05)。

结论

AML1/ETO阳性AML患者EZH2 mRNA高表达,可作为评估患者预后的生物标志物。

关键词:急性髓系白血病,AML1/ETO融合基因,果蝇zeste基因增强子人类同源物2,预后

Abstract: Objective

To investigate the expression and clinical significance of enhancer of zeste homolog 2 (EZH2) in AML1/ETO fusion gene (AML1/ETO)-positive acute myeloid leukemia (AML).

Methods

From January 2015 to January 2018, 40 AML1/ETO-positive AML patients admitted to the Department of Hematology in our hospital were selected as the AML1/ETO-positive group. In addition, 40 AML1/ETO-negative AML patients during the same period were selected as the control group. Real-time fluorescence quantitative PCR was used to detect the expression level of EZH2 mRNA in bone marrow mononuclear cells (BM-MNCs). After 3 years of follow-up, the Kaplan-Meier method was used to analyze the relationship between EZH2 mRNA expression and the prognosis of AML1/ETO-positive AML patients, and Cox regression analysis was used to analyze the risk factors that affected the relapse-free survival and overall survival of AML1/ETO-positive AML patients.

Results

The expression level of EZH2 mRNA in BM-MNCs in the AML1/ETO positive group was significantly higher than that in the control group (P< 0.05). The expression level of EZH2 mRNA in BM-MNCs of AML1/ETO-positive AML patients was related to white blood cell count, proportion of peripheral blood immature cells, extramedullary infiltration, prognosis of karyotype, and efficacy of first induction therapy (P< 0.05), and was positively correlated with the white blood cell count and the proportion of immature cells in peripheral blood (P< 0.05). The Kaplan-Meier curve showed that the 3-year overall survival rate of the EZH2 mRNA low expression group was significantly higher than that of the EZH2 mRNA high expression group (P< 0.05). Cox regression analysis showed that the efficacy of the first induction treatment and EZH2 mRNA expression were independent risk factors that affected the relapse-free survival and overall survival of AML1/ETO-positive AML patients (P< 0.05).

Conclusion

The expression of EZH2 mRNA is high in AML patients with positive AML1/ETO, which can be used as a biomarker to assess the prognosis of patients.

Key words:acute myeloid leukemia,AML1/ETO fusion gene,enhancer of zeste homolog 2,prognosis