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首页> 外文期刊>Anticancer Research: International Journal of Cancer Research and Treatment >Quantitative comparison of erythropoietin receptor levels in the epithelial versus endothelial fractions of primary breast tumors.
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Quantitative comparison of erythropoietin receptor levels in the epithelial versus endothelial fractions of primary breast tumors.

机译:原发性乳腺肿瘤上皮和内皮成分中促红细胞生成素受体水平的定量比较。

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BACKGROUND: Erythropoietin (EPO) was shown to reduce tumor survival in recent trials, however, its mechanisms of action are unclear. Efforts to measure tumor EPO receptor (EPOR) are limited by the promiscuity of EPOR antibodies, and concerns as to whether EPOR mRNA measurements are confounded by heterogeneity of tumor vasculature, a known EPOR source. MATERIALS AND METHODS: This study compared mRNA levels of EPOR and JAK2 in 11 breast tumor epithelial versus endothelial dissections. RESULTS: In nine tumors EPOR mRNA was 2.6 (1.2-5.7)-fold lower in the epithelial fraction, however, this reduction was less than the reduction of endothelial markers. In two tumors, EPOR mRNA was 2.9 (1.7-4.0)-fold higher in the epithelial fraction. The inter-tumor variation in EPOR levels exceeded the intra-tumor variation between fractions. Similar results were obtained for JAK2. CONCLUSION: Tumor vasculature is not the sole source of EPOR and JAK2, and tumors can be segregated by EPOR and JAK2 levels for correlative analysis with clinical outcomes.
机译:背景:促红细胞生成素(EPO)在最近的试验中显示会降低肿瘤的存活率,但是其作用机理尚不清楚。 EPOR抗体的混杂性限制了测量肿瘤EPO受体(EPOR)的努力,并关注EPOR mRNA的测量是否与已知的EPOR来源的肿瘤血管异质性相混淆。材料与方法:本研究比较了11个乳腺肿瘤上皮剥离术与内皮剥离术中EPOR和JAK2的mRNA水平。结果:在九种肿瘤中,EPOR mRNA的上皮分数降低了2.6(1.2-5.7)倍,但是,这种降低小于内皮标记物的降低。在两种肿瘤中,EPOR mRNA的上皮部分高2.9(1.7-4.0)倍。 EPOR水平的肿瘤间变化超过各部分之间的肿瘤内变化。 JAK2获得了相似的结果。结论:肿瘤脉管系统不是EPOR和JAK2的唯一来源,并且可以通过EPOR和JAK2的水平分离肿瘤,以便与临床结果进行相关分析。

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