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HDAC9 基因沉默对非小细胞肺癌细胞生物学特性和Wnt信号通路影响

2020-07-04侯欣王志伟贾梦英杨芳宋慧琴段永建

青岛大学学报(医学版) 2020年3期

侯欣 王志伟 贾梦英 杨芳 宋慧琴 段永建

[摘要] 目的 探讨组蛋白脱乙酰酶9(HDAC9)基因沉默对非小细胞肺癌细胞生物学特性和Wnt信号通路影响。

方法 取非小细胞肺癌细胞株A549,设计HDAC9沉默序列,使用实时荧光定量PCR(qRT-PCR)和免疫印迹法(Western blot)检测HDAC9、JNK、β-catenin、Wnt-5的mRNA及蛋白表达水平。采用CCK8法、划痕实验、Transwell实验和流式细胞术检测细胞增殖、迁移、侵袭与凋亡等。

结果 si-HDAC9转染细胞后JNK、β-catenin、Wnt-5表达下降,细胞生长抑制,细胞增殖、迁移和侵袭能力明显降低,凋亡增加;si-HDAC9+rWnt3a转染可逆转上述趋势(F=9.070~159.400,P均<0.05)。

结论 HDAC9沉默表达可抑制Wnt信号通路,抑制非小细胞肺癌细胞增殖、迁移与侵袭并促进细胞凋亡。

[关键词] 组蛋白脱乙酰基酶类;基因沉默;癌,非小细胞肺;肿瘤转移;肿瘤侵润;Wnt信号通路

[中图分类号] R345.61;R730.26

[文献标志码] A

[文章编号] 2096-5532(2020)03-0337-05

doi:10.11712/jms.2096-5532.2020.56.106

[开放科学(资源服务)标识码(OSID)]

[网络出版] http://kns.cnki.net/kcms/detail/37.1517.R.20200528.0841.003.html;2020-05-28 12:03

EFFECT OF HISTONE DEACETYLASE 9 GENE SILENCING ON THE BIOLOGICAL CHARACTERISTICS AND THE WNT SIGNALING PATHWAY OF NON-SMALL CELL LUNG CANCER CELLS

HOU Xin, WANG Zhiwei, JIA Mengying, YANG Fang, SONG Huiqin, DUAN Yongjian

(Department of Oncology, The First Affiliated Hospital of Henan University, Kaifeng 475001, China)

[ABSTRACT]ObjectiveTo investigate the effect of histone deacetylase 9 (HDAC9) gene silencing on the biological cha-

racteristics and the Wnt signaling pathway of non-small cell lung cancer cells.

MethodsThe non-small cell lung cancer cell line A549 was cultured and the HDAC9 silencing sequence was designed. Quantitative real-time PCR (qRT-PCR) and Western blot were used to measure the mRNA and protein expression of HDAC9, JNK, β-catenin, and Wnt-5, and CCK-8 assay, wound hea-

ling assay, Transwell assay, and flow cytometry were used to observe cell proliferation, migration, invasion, and apoptosis.

Results

After the cells were transfected with si-HDAC9, there was significant inhibition of cell growth, significant reductions in cell proliferation, migration and invasion, and a significant increase in cell apoptosis, and the transfection of si-HDAC9+rWnt3a reversed the above changes (F=9.070-159.400, all P<0.05).

ConclusionHDAC9 gene silencing can inhibit the Wnt signaling pathway and the proliferation, migration, and invasion of non-small cell lung cancer cells and promote cell apoptosis.

[KEY WORDS]histone deacetylases; gene silencing; carcinoma, non-small-cell lung; neoplasm metastasis; neoplasm invasiveness; Wnt signaling pathway

肺癌病死率極高[1],尤以非小细胞肺癌为著,预后极差[2-3]。组蛋白脱乙酰酶9(HDAC9)是一种转录抑制因子,可参与机体生长发育过程[4],在多种癌症中表达异常[5-7]。Wnt蛋白是生物发育过程所需的分泌型蛋白生长因子[8]。癌基因可通过激活或抑制经典的Wnt信号通路,参与肿瘤的进程[9-11]。目前,有关HDAC9基因与非小细胞肺癌关系的研

究尚不多见。本研究探讨了HDAC9基因沉默對非

小细胞肺癌细胞生物学特性和 Wnt 信号通路的影响,以期为非小细胞肺癌发病的分子机制和临床治疗机制研究奠定理论基础,从而为肺癌诊疗提供新的研究方向。

1 材料与方法

1.1 主要试剂与仪器

体积分数为0.10的胎牛血清(上海索……

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