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临床医药

低氧微环境下脑胶质瘤对替莫唑胺耐药性的机制研究

  • 赵锦阳 ,
  • 许智星 ,
  • 陈德
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  • 1.四川省九〇三医院,四川 江油 621700;

    2.云南省普洱市人民医院,云南 普洱 665000

赵锦阳,男,副主任医师,研究方向:脑出血及脑胶质瘤的基础研究。

收稿日期: 2025-07-24

  修回日期: 2025-09-01

  录用日期: 2026-04-20

  网络出版日期: 2026-04-21

基金资助

昆明理工大学医学联合专项项目(KUST-PE2022011Y);四川省绵阳市卫生健康委基础应用科研课题项目(202210)

Study on the Mechanism of Temozolomide Resistance in Glioma under Hypoxic Microenvironment

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  • 1.903 Hospital Sichuan Jiangyou 621700, China

    2.Pu'er People's Hospital Yunnan Pu'er 665000, China

Received date: 2025-07-24

  Revised date: 2025-09-01

  Accepted date: 2026-04-20

  Online published: 2026-04-21

摘要

目的:研究替莫唑胺对低氧微环境中脑胶质瘤细胞表型的影响,探究在低氧微环境下脑胶质瘤细胞对替莫唑胺的耐药机制。方法:构建低氧微环境:将T98G细胞分为常氧组(21%氧气浓度)和低氧组(1%氧气浓度)。细胞贴壁后,在两组细胞中添加1 mmol·L-1的替莫唑胺(TMZ),培养72 h。采用CCK-8法检测细胞增殖情况,同时通过细胞划痕实验和Transwell侵袭实验评估细胞的迁移及侵袭能力。利用蛋白质印迹法(Western blot)技术检测两组细胞中低氧诱导因子-HIF-)和转化生长因子-β1TGF-β1)的表达水平。干扰T98G细胞HIF-的表达:在1%低氧微环境中培养细胞,分为干扰组(sh-HIF-)和空白对照组(sh-control)。细胞贴壁后,两个组别均添加1 mmol·L-1替莫唑胺,继续培养72 h,分析细胞的增殖、迁移和侵袭能力变化以及TGF-β1的表达水平。结果:低氧组胶质瘤细胞的增殖、迁移及侵袭水平均高于常氧组(P<0.05)。同时,低氧组胶质瘤细胞中HIF-TGF-β1的表达水平均高于常氧组(P<0.05)。②HIF-干扰组T98G细胞的增殖和迁移能力弱于空白对照组(P<0.05),并且HIF-干扰组T98G细胞的TGF-β1表达水平亦低于空白对照组(P<0.05)。结论:低氧微环境可减弱替莫唑胺对脑胶质瘤细胞增殖、迁移及侵袭的影响。低氧微环境可能通过上调HIF-TGF-β1的表达,促进胶质瘤细胞的化疗耐药性。在低氧环境下,HIF-可能通过调控TGF-β1的表达,参与脑胶质瘤细胞的耐药机制。


本文引用格式

赵锦阳 , 许智星 , 陈德 .

低氧微环境下脑胶质瘤对替莫唑胺耐药性的机制研究

[J]. 中国医药导刊, 2026 , 28(3) : 310 -316 . DOI: 10.1009-0959.2026.030010

Abstract

Objective: To observe the effect of temozolomide on the phenotype of glioma cells in hypoxic microenvironment and to explore the mechanism of temozolomide resistance of glioma cells in hypoxic microenvironment.Methods: ①To construct a hypoxic microenvironment The T98G cells were set as the normoxia group 21% oxygen content and the hypoxia group 1% oxygen content. After the cells adhered 1 mmol·L-1 temozolomide TMZ was added to the two groups of cells. After 72 h of culture the cell proliferation was detected by CCK-8 assay and the cell migration and invasion were detected by cell scratch and transwell assay. The expressions of hypoxia-inducible factor-HIF- and transforming growth factor-β1 TGF-β1 in the two groups were detected by western blot. ② Interfere with the expression of HIF-1α in T98G cells After the cells of the interference group sh-HIF- and the blank control group sh-control were cultured in 1% hypoxic microenvironment to adhere to the cell wall 1mmol·L-1 temozolomide was added to the two groups of cells and continued to culture for 72 h and the changes of cell proliferation migration invasion ability and the expression level of TGF-β1 were analyzed.Results: ①The proliferation migration and invasion of glioma cells in the hypoxia group were higher than those in the normoxia group P<0.05. The expression levels of HIF-1α and TGF-β1 in glioma cells in the hypoxia group were higher than those in the normoxia group P<0.05. ②The proliferation and migration abilities of T98G cells in the HIF-1αinterference group were lower than those in the blank control group P<0.05), and the TGF-β1 expression level of T98G cells in the HIF-1αinterference group was also lower than that in the blank control group P<0.05.Conclusion: Hypoxic microenvironment can attenuate the effects of temozolomide on the proliferation migration and invasion of glioma cells. Hypoxic microenvironment may promote the chemoresistance of glioma cells by up-regulating the expression of HIF-1α and TGF-β1. HIF-1α may be involved in the drug resistance of glioma cells through mediating TGF-β1 under hypoxic microenvironment.


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