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首页> 外文期刊>Acta Pharmacologica Sinica >Effects of glucocorticoid on proliferation, differentiation, and glucocorticoid receptor expression in human ovarian carcinoma cell line 3AO
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Effects of glucocorticoid on proliferation, differentiation, and glucocorticoid receptor expression in human ovarian carcinoma cell line 3AO

机译:糖皮质激素对人卵巢癌细胞系3AO增殖,分化和糖皮质激素受体表达的影响

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AIM: To study the effects of dexamethasone (Dex), a synthetic glucocorticoid, on proliferation, differentiation, glucocorticoid receptor expression and regulation in human ovarian cancer cell line 3AO. METHODS: 3AO cells proliferation was evaluated by viable cell count, activity of alkaline phosphatase (AKP) and tumor marker CA125 level were determined; the expression and regulation of glucocorticoid receptor (GR) in 3AO cells was studied with radioligand binding assay. RESULTS: Dex inhibited the proliferation of 3AO cells accompanied by morphological changes in concentration- and time- dependent manner. AKP activity was increased and tumor marker CA125 was decreased in 3AO cells after treatment with Dex. The induction of AKP activity by dexamethasone was blocked by RU486, a potent glucocorticoid antagonist. There existed high affinity and low capacity of GR in 3AO cells, and the GR binding activity could be downregulated by Dex. CONCLUSION: Glucocortocoids play an important role in the reglulation of 3AO cell proliferation and differentiation. There existed functional GR in 3AO cells and the cellular effects of dexamethasone on 3AO cells were mediated by GR.
机译:目的:研究合成糖皮质激素地塞米松(Dex)对人卵巢癌细胞系3AO增殖,分化,糖皮质激素受体表达和调控的影响。方法:通过活细胞计数评估3AO细胞的增殖,测定碱性磷酸酶(AKP)的活性和肿瘤标志物CA125的水平;放射性配体结合法研究了3AO细胞中糖皮质激素受体(GR)的表达和调控。结果:Dex抑制了3AO细胞的增殖,并伴随着浓度和时间依赖性的形态变化。用Dex处理后,在3AO细胞中AKP活性增加而肿瘤标志物CA125减少。地塞米松对AKP活性的诱导被有效的糖皮质激素拮抗剂RU486阻断。 3AO细胞中存在高亲和力和低容量的GR,并且Dex可以下调GR结合活性。结论:糖皮质激素在调节3AO细胞的增殖和分化中起重要作用。 GR在3AO细胞中存在功能性GR,地塞米松对3AO细胞的细胞介导作用。

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