医学分子生物学杂志 ›› 2024, Vol. 21 ›› Issue (4): 309-314.doi: 10.3870/j.issn.1672-8009.2024.04.003

• 论著 • 上一篇    下一篇

细胞外组蛋白调控 TLR4 / NF-κB 途径对膀胱癌细胞上皮间质转化和侵袭的影响 #br#

  

  1. 株洲市中心医院泌尿外科 湖南省株洲市, 412007
  • 出版日期:2024-07-31 发布日期:2024-09-09
  • 基金资助:
    2023 年度湖南省自然科学基金 (No. 2023JJ50215)

Effect of Extracellular Histone on Epithelial Mesenchymal Transformation and Invasion of Bladder Cancer Cells by Regulation of TLR4 / NF-κB Pathway #br#

  1. Department of Urology, Zhuzhou Central Hospital, Zhuzhou, Hunan, 412000, China
  • Online:2024-07-31 Published:2024-09-09

摘要: 目的 研究细胞外组蛋白调控 Toll 样受体 4 ( Toll like receptor 4, TLR4) / 核因子-κB ( nuclearfactor-κB, NF-κB) 途径对膀胱癌细胞上皮间质转化 (epithelial mesenchymal transformation, EMT) 和侵袭的影响。 方法 培养膀胱癌细胞株 T24 并分为对照组、 不同浓度组蛋白 H3 (50、 100、 200 μg / mL) 、 溶剂对照 (体积分数 0. 1 % DMSO) 、 组蛋白 H3 (200 μg / mL) + 溶剂对照 (体积分数 0. 1 % DMSO) 组蛋白 H3 (200 μg / mL) + NF-κB 抑制剂 Bay11-7082 (10 μmol / L) 。 分组给药 24 h 后检测细胞侵袭数目及细胞中 E-钙粘蛋白 ( E-cadherin)、 N-钙粘蛋白 ( N-cadherin)、 波形蛋白 ( Vimentin)、 TLR4、 磷酸化P65 NF-κB (p-P65 NF-κB) 的蛋白表达水平。 结果 不同浓度组蛋白 H3 组的细胞侵袭数目及 N-cadherin、Vimentin、 TLR4、 p-P65 NF-κB 的表达水平高于对照组, E-cadherin 的蛋白表达水平低于对照组 P< 0. 05)且组蛋白 H3 浓度越高细胞侵袭数目及蛋白表达水平的变化越显著组蛋白 H3 + Bay11-7082 组的细胞侵袭数目及 N-cadherin、 Vimentin、 p-P65 NF-κB 的表达水平低于组蛋白 H3 + 溶剂对照组, E-cadherin 的蛋白表达水平高于组蛋白 H3 + 溶剂对照组 (P< 0. 05)。 结论 细胞外组蛋白促进膀胱癌细胞 EMT 及侵袭这一促进作用与激活 TLR4 / NF-κB 途径有关

关键词:

膀胱癌, 细胞外组蛋白, 上皮间质转化, 侵袭, TLR4 / NF-κB 途径

Abstract: Objective To investigate the effect of extracellular histone on epithelial mesenchymal transformation (EMT) and invasion of bladder cancer cells by regulating toll-like receptor 4(TLR4) / nuclear factor-κB (NF-κB) pathway. Methods T24 bladder cancer cells were culturedand divided into 7 groups: control group, histone H3 groups with different concentrations (50, 100, 200 μg / mL), solvent control (0. 1 % DMSO) group, histone H3 (200 μg / mL) + solvent control (0. 1 % DMSO) group, and histone H3 (200 μg / mL) + NF-κB inhibitor Bay11-7082 (10 μmol / L) group. The number of invasion cells and the protein expression levels of E-cadherin, N-cadherin, Vimentin, TLR4 and phosphorylated P65 NF-κB ( p-P65 NF-κB) were detected 24 h after administration. Results The number of invasion cells and the expression levels ofN-cadherin, Vimentin, TLR4 and p-P65 NF-κB in the histone H3 groups were higher than those inthe control group, and the protein expression level of E-cadherin was lower than that in the controlgroup (P < 0. 05), the number of invasion cells and the expression levels of those proteins werechanged with the concentration of histone H3 treatment in a dose-dependent manner. The number ofcell invasion and the protein expression levels of N-cadherin, Vimentin and p-P65 NF-κB in thehistone H3 + Bay11-7082 group were lower than those in the histone H3 + solvent control group,and the expression level of E-cadherin was higher than that in the histone H3 + solvent control group(P< 0. 05). Conclusion Extracellular histone promotes EMT and invasion of bladder cancer cells,which is related to the activation of TLR4 / NF-κB pathway.

Key words:

bladder cancer, extracellular histone, epithelial mesenchymal transformation, invasion, TLR4 / NF-κB pathway

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