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首页> 外文期刊>The Korean Journal of Physiology & Pharmacology >Effect of glucose level on chemical hypoxia- and hydrogen peroxide-induced chemokine expression in human glioblastoma cell lines
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Effect of glucose level on chemical hypoxia- and hydrogen peroxide-induced chemokine expression in human glioblastoma cell lines

机译:葡萄糖水平对人胶质母细胞瘤细胞系化学缺氧和过氧化氢诱导的趋化因子表达的影响

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Glioblastoma multiforme (GBM) is the most common primary intracranial tumor in adults and has poor prognosis. The GBM-specific tumor microenvironment (TME) plays a crucial role in tumor progression, immune escape, local invasion, and metastasis of GBM. Here, we demonstrate that hypoxia, reactive oxygen species (ROS), and differential concentration of glucose influence the expression of cytokines and chemokines, such as IL-6, IL-8, and IP-10, in human glial cell lines. Treatment with cobalt chloride (CoCl2) and hydrogen peroxide (H2O2) significantly increased the expression levels of IL-6, IL-8, and IP-10 in a dose-dependent manner in CRT-MG and U251-MG astroglioma cells, but not in microglia cells. However, we found strikingly different patterns of expression of cytokines and chemokines between H2O2-treated CRT-MG cells cultured in low- and high-glucose medium. These results suggest that astroglioma and microglia cells exhibit distinct patterns of cytokine and chemokine expression in response to CoCl2 and H2O2 treatment, and different concentrations of glucose influence this expression under either hypoxic or oxidant-enriched conditions.
机译:多形胶质母细胞瘤(GBM)是成人中最常见的原发性颅内肿瘤,预后较差。 GBM特异性肿瘤微环境(TME)在GBM的肿瘤进展,免疫逃逸,局部侵袭和转移中起着至关重要的作用。在这里,我们证明缺氧,活性氧(ROS)和葡萄糖的不同浓度影响人类胶质细胞系中细胞因子和趋化因子,如IL-6,IL-8和IP-10的表达。氯化钴(CoCl 2 )和过氧化氢(H 2 O 2 )处理可显着增加IL-6,IL- 8,IP-10在CRT-MG和U251-MG星形胶质瘤细胞中呈剂量依赖性,但在小胶质细胞中则不。然而,我们发现在低和高葡萄糖培养基中培养的H 2 O 2 处理过的CRT-MG细胞之间细胞因子和趋化因子的表达模式截然不同。这些结果表明星形胶质瘤和小胶质细胞响应CoCl 2 和H 2 O 2 处理表现出不同的细胞因子和趋化因子表达模式,并且在低氧或氧化剂富集的条件下,不同浓度的葡萄糖会影响该表达。

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