医学分子生物学杂志 ›› 2024, Vol. 21 ›› Issue (4): 293-299.doi: 10.3870/j.issn.1672-8009.2024.04.001

• 论著 •    下一篇

GATA3 通过调控 LIFR 抑制人乳腺癌细胞的迁移能力 #br#

  

  1. 1新乡医学院医学技术学院 河南省新乡市, 453003 2空军军医大学基础医学院免疫学教研室 西安市, 710032
  • 出版日期:2024-07-31 发布日期:2024-09-09
  • 基金资助:
    国家重点实验室自主研究课题 (No. CBSKL2022ZZ04)

GATA3 Inhibits Migration of Human Breast Cancer Cells by Regulating LIFR #br#

  1. 1School of Medical Technology, Xinxiang Medical University, Xinxiang, Henan, 453003, China  2Department of Immunology, Air Force Medical University, Xian, 710032, China
  • Online:2024-07-31 Published:2024-09-09

摘要: 目的 探究 GATA 结合蛋白 3 (GATA binding protein 3, GATA3) 对乳腺癌细胞迁移能力的影响方法 MCF7 细胞中利用慢病毒载体介导的基因干涉技术敲低 GATA3 基因, 使用实时定量荧光 PCR (qRT-PCR) 和蛋白质印迹检测 GATA3 LIFR mRNA 和蛋白表达水平, Transwell 实验检测 MCF7 细胞的迁移能力MCF7 T47D 细胞中用染色质免疫沉淀 (ChIP-qPCR) 实验检测 GATA3 LIFR 的启动子区的结合位点在敲低 GATA3 基因的 MCF7 细胞中回补 LIFR, 通过细胞划痕实验和 Transwell 实验检测 MCF7细胞的迁移能力 结果 与对照组相比, 敲低 GATA3 基因的 MCF7 细胞的迁移能力增强 ( P < 0. 05)。 与对照组相比, 敲低 GATA3 基因的 MCF7 细胞的 LIFR 表达水平降低 ( P < 0. 05)。 乳腺癌细胞 MCF7 T47D GATA3 LIFR 的启动子区有结合 ( P < 0. 05)。 在敲低 GATA3 基因的 MCF7 细胞中稳定过表达LIFR 可以部分挽救 GATA3 基因敲低引起的细胞迁移能力的增强 ( P < 0. 05)。 结论 GATA3 通过转录激活 LIFR 抑制乳腺癌细胞 MCF7 的迁移

关键词:

乳腺癌, GATA 结合蛋白 3, 白血病抑制因子受体 LIFR, 细胞迁移

Abstract: Objective To explore the effect of GATA binding protein 3 on the migration abilityof breast cancer cells. Methods Lentivirus-mediated GATA3-knockdown cell line was establishedto study the expression levels and function of GATA3 by performing real-time quantitative fluorescentPCR, Western blotting and Transwell assay in vitro. The binding sites of GATA3 in LIFR promoterregion was detected by Chromatin immunoprecipitation assay ( ChIP-qPCR) assay in MCF7 andT47D cells. LIFR was overexpressed in MCF7 cells with reduced GATA3 expression, and the migration capacity of MCF7 cells was measured by Wound healing assay and Transwell assay. Results Compared with the control group, the group of MCF7 cells that knocked down GATA3 had enhancedmigration ability (all P< 0. 05), and decreased expression of LIFR ( all P < 0. 05). ChIP-qPCRdata showed a physical binding of GATA3 on the promoter region of LIFR in MCF7 and T47D cells(all P< 0. 05). Overexpression of LIFR rescued the enhanced cell migration induced by depletion of GATA3 in MCF7 cells (all P< 0. 05). Conclusion GATA3 inhibits the migration of breast cancercells MCF7 through transcriptional activation of LIFR.

Key words:

breast cancer, GATA binding protein 3, leukemia inhibitory factor receptor, cell migration

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