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首页> 外文期刊>Journal of Cellular Physiology >Genetic and Functional Analysis of Polymorphisms in the Human Dopamine Receptor and Transporter Genes in Small Cell Lung Cancer
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Genetic and Functional Analysis of Polymorphisms in the Human Dopamine Receptor and Transporter Genes in Small Cell Lung Cancer

机译:多态性的遗传和功能分析在人类多巴胺受体和转运体在小细胞肺癌的基因

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The regulatory role of dopamine (DA) in endocrine, cardiovascular and renal functions has been extensively studied and used for clinical purposes. More recently DA has been indicated as a regulatory molecule for immune cells and malignant cell proliferation. We assessed the expression and the functional role DA, DA receptors, and transporters in primary small cell lung cancer (SCLC). By HPLC DA plasma levels were more elevated in SCLC patients in comparison with NSCLC patients and healthy controls. SCLC cell expressed DA D1- and D2-like receptors and membrane and vesicular transporters at protein and mRNA levels. We also investigated the effects of independent D1- or D2-like receptor stimulation on SCLC cell cultures. DA D1 receptor agonist SKF38393 induced the increase of cAMP levels and DARPP-32 protein expression without affecting SCLC growth rate. Cell treatment with the DA D1 receptor antagonist SCH23390 inhibited SKF38393 effects. In contrast, the DA D2 receptor agonist quinpirole (10M) counteracted, in a dose and time dependent way, SCLC cell proliferation, it did not affect cAMP levels and decreased phosphorylated AKT that was induced by DA D2 receptor antagonist sulpiride. However, in only one SCLC line, stimulation of DA D2 receptor failed to inhibit cell proliferation in vitro. This effect was associated to the existence of rs6275 and rs6277 polymorphisms in the D2 gene. These results gave more insight into DA control of lung cancer cell behavior and suggested the existence of different SCLC phenotypes. J. Cell. Physiol. 231: 345-356, 2016. (c) 2015 Wiley Periodicals, Inc.
机译:多巴胺(DA)的监管作用在内分泌,心血管和肾脏功能广泛研究并用于临床目的。监管对免疫细胞和分子恶性细胞增殖。表达和功能作用哒,哒受体和转运蛋白在原发性小细胞肺癌(SCLC)。在SCLC患者相比更加升高非小细胞肺癌患者和健康对照组。表达了DA D1 -和D2-like受体膜和膜泡转运蛋白的蛋白质和mRNA水平。独立的D1 -或D2-like受体刺激SCLC细胞培养。受体激动剂SKF38393诱导的增加阵营水平和DARPP-32蛋白表达影响SCLC增长率。DA D1受体拮抗剂SCH23390抑制SKF38393效果。受体激动剂quinpirole(10米)中和剂和时间依赖方式,SCLC细胞增殖,它没有影响营水平,降低了诱导的磷酸化AKT DA D2受体拮抗剂舒必利。一个SCLC线,DA D2受体的刺激未能抑制体外细胞增殖。这种效应的存在有关rs6275和rs6277 D2基因多态性。这些结果进一步洞察了DA控制肺癌细胞的行为和建议存在不同的SCLC表型。杂志。231:345 - 356年,2016年。期刊、公司。

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