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中国临床药理学与治疗学 ›› 2017, Vol. 22 ›› Issue (6): 627-632.

• 基础研究 • 上一篇    下一篇

小分子干扰RNA抑制HLX1表达对急性髓系白血病细胞侵袭的影响及机制探讨

沈 健,林颖超,朱夏吟   

  1. 台州医院血液肿瘤科,临海 317000,浙江
  • 收稿日期:2017-01-24 修回日期:2017-04-14 出版日期:2017-06-26 发布日期:2017-06-26
  • 作者简介:沈健,男,硕士研究生,主治医生,研究方向:淋巴瘤临床治疗。 Tel:13758628257 E-mail:hyper1001@126.com
  • 基金资助:

    浙江省医药卫生项目(2017195761)

Inhibitory effect of HLX1 on proliferation and invasion of acute myeloid leukemia cell

SHEN Jian, LIN Yingchao, ZHU Xiayin   

  1. Deparment of Hematology and Oncology, Taizhou Hospital, Linhai 317000, Zhejiang, China
  • Received:2017-01-24 Revised:2017-04-14 Online:2017-06-26 Published:2017-06-26

摘要:

目的: 探讨小分子干扰RNA(siRNA)抑制人同源异型盒基因(H2.0-like homeobox,HLX1)表达对急性髓系白血病细胞系U937细胞增殖与侵袭能力的影响。方法: 利用HLX1特异的siRNA瞬时转染U937细胞,通过实时定量(RT-PCR)与蛋白印迹法(Western blot)分别测定HLX1的mRNA及蛋白质的表达水平,应用细胞体外增殖实验法(MTT)与体外侵袭实验观察siRNA抑制HLX1表达后的U937细胞增殖与侵袭变化。 结果: 相对于空白对照组,HLX1特异的siRNA转染24 h后可抑制U937细胞HLX1 mRNA表达,抑制率为(70.0±2.7)%(P<0.01);转染48 h后可有效抑制HLX1蛋白质表达,抑制率为(81.0±3.1)%(P<0.01);转染组U937细胞增殖能力显著下降(P<0.01),转染组穿过基质胶的U937细胞数(22.0±2.3)显著低于空白对照组(66.0±5.0)(P<0.01), p-21活化激酶1(PAK1)蛋白表达水平显著下降(P<0.01)。结论: siRNA下调HLX1表达水平可显著抑制急性髓系白血病细胞的增殖与侵袭能力。

关键词: 急性髓系白血病细胞, U937, 同源异型盒基因, RNA干扰, 侵袭

Abstract:

AIM: To explore the effect of HLX1 on the proliferation and invasion ability in acute myeloid leukemia cell U937. METHODS: The HLX1 mRNA-targeting siRNA was transfected to U937 cells, the mRNA and protein expression of HLX1 were assessed by RT-PCR and Western blot, respectively. MTT assay and Transwell chamber assay were used to observe the proliferation and invasion ability of U937 cell after being transfected with HLX1 mRNA-targeting siRNA. RESULTS:Compared with the control group, HLX1 siRNA transfection reduced the level of HLX1 mRNA in U937 cells after 24 h, the inhibition rate was (70.0±2.7)% (P<0.01); HLX1 siRNA transfection also reduced the expression of HLX1 protein in U937 cells after 48 h, the inhibition rate was (81.0±3.1)% (P<0.01); HLX1 transfection group cell proliferation was inhibited significantly (P<0.01); The invasion cells of HLX1 siRNA(22.0±2.3) were significantly lower than that of control group(66.0±5.0)(P<0.01), the expression of PAK1 protein was decreased in HLX1 transfection group(P<0.01). CONCLUSION: SiRNA can significantly inhibit the proliferation and invasion of acute myeloid leukemia cell by down-regulating the expression of HLX1.

Key words: acute myeloid leukemia cell, U937, HLX1, RNA interference, invasion

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