NHERF1/EBP50 is an organizer of polarity structures and a diagnostic marker in ependymoma.

NHERF1/EBP50 is an organizer of polarity structures and a diagnostic marker in ependymoma.
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DOI:
10.1186/s40478-015-0197-z
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发表时间:
2015-03-08
影响因子:
7.1
通讯作者:
Raisanen JM
Raisanen JM
中科院分区:
医学2区
文献类型:
--
作者:
Georgescu MM;Yell P;Mobley BC;Shang P;Georgescu T;Wang SH;Canoll P;Hatanpaa KJ;White CL 3rd;Raisanen JM

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NHERF 1/EBP 50是上皮形态发生所需的衔接蛋白,与多种人类恶性肿瘤的进展有关。NHERF 1缺陷小鼠有肠刷状缘结构缺陷,我们在这里报告,他们也有紊乱的室管膜纤毛与非梗阻性脑积水的发展。对小鼠和人脑组织的检查显示,室管膜细胞顶端质膜的NHERF 1表达最高。在室管膜肿瘤中,NHERF 1表达保留在极化的膜结构中,如微腔、转子和管道,在那里它与它的一些配体,如膜突蛋白和PTEN共定位。对113例肿瘤的综合分析显示,在100%的室管膜瘤、室管膜下瘤和小儿间变性室管膜瘤中,以及在67%的成人间变性室管膜瘤中,NHERF 1标记的微管腔非常强。35%的室管膜瘤病例中存在NHERF 1染色,而EMA(用于室管膜瘤诊断的常规免疫组织化学标记物)缺乏反应性。NHERF 1标记的微腔是不存在或很少看到在其他类型的脑肿瘤分析,表明NHERF 1作为一个可靠的室管膜肿瘤的诊断标志物。间变性灶和成人间变性室管膜瘤的一个子集显示完全缺乏NHERF 1标记的极性结构,与这些侵袭性肿瘤的分化丢失一致。这些数据突出了NHERF 1在室管膜形态发生中的作用,并直接应用于室管膜肿瘤的诊断。本文的在线版本(doi:10.1186/s40478-015-0197-z)包含补充材料,可供授权用户使用。
NHERF1/EBP50, an adaptor protein required for epithelial morphogenesis, has been implicated in the progression of various human malignancies. NHERF1-deficient mice have intestinal brush border structural defects and we report here that they also have disorganized ependymal cilia with development of non-obstructive hydrocephalus. Examination of mouse and human brain tissues revealed highest NHERF1 expression at the apical plasma membrane of ependymal cells. In ependymal tumors, NHERF1 expression was retained in polarized membrane structures, such as microlumens, rosettes and canals, where it co-localized with some of its ligands, such as moesin and PTEN. Analysis of a comprehensive panel of 113 tumors showed robust NHERF1 labeling of microlumens in 100% of ependymomas, subependymomas, and pediatric anaplastic ependymomas, and in 67% of adult anaplastic ependymomas. NHERF1 staining was present in 35% of ependymoma cases that lacked reactivity for EMA, the routine immunohistochemical marker used for ependymoma diagnosis. NHERF1 labeling of microlumens was either absent or rarely seen in other types of brain tumors analyzed, denoting NHERF1 as a reliable diagnostic marker of ependymal tumors. Anaplastic foci and a subset of adult anaplastic ependymomas showed complete absence of NHERF1-labeled polarity structures, consistent with a loss of differentiation in these aggressive tumors. These data highlight a role for NHERF1 in ependymal morphogenesis with direct application to the diagnosis of ependymal tumors. The online version of this article (doi:10.1186/s40478-015-0197-z) contains supplementary material, which is available to authorized users.
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发表时间: 2009-11-01
期刊: HISTOPATHOLOGY
影响因子: 6.4
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发表时间: 2012-09-01
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期刊: ONCOGENE
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发表时间: 1997-10-06
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