首页> 外文期刊>Pathobiology: journal of immunopathology, molecular and cellular biology >Downregulation of clusterin expression in testicular germ cell tumours.
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Downregulation of clusterin expression in testicular germ cell tumours.

机译:睾丸生殖细胞肿瘤中簇蛋白表达的下调。

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OBJECTIVES: Clusterin is implicated in many biological processes including cell adhesion, apoptosis and transformation. Clusterin expression was demonstrated during sperm maturation and is overexpressed in different malignancies including breast and prostate carcinomas and anaplastic large-cell lymphomas. METHODS: The aim of this study was to determine the expression of clusterin in a series of different germ cell tumours by immunohistochemistry. Twenty-two seminomas, 27 embryonal carcinomas, 22 mature and immature teratomas, 8 yolk sac tumours and 1 chorion carcinoma as well as 30 normal testes were analysed using a monoclonal antibody. RESULTS: In normal testes strong signals were seen in the maturing germ cells and in Leydig cells. In most tumours examined no clusterin expression was detected (84%). Only a focal weak expression was seen in some teratomas (32%), embryonal carcinomas (15%) and yolk sac tumours (25%). CONCLUSIONS: Our results suggest that clusterin is associated with normal germ cell development and that the loss of clusterin expression might play a role in the malignant transformation of germ cells. Copyright 2001 S. Karger AG, Basel
机译:目的:簇蛋白参与许多生物学过程,包括细胞粘附,凋亡和转化。 Clusterin的表达在精子成熟过程中得到证明,在包括乳腺癌和前列腺癌以及间变性大细胞淋巴瘤在内的各种恶性肿瘤中过表达。方法:本研究的目的是通过免疫组织化学测定簇蛋白在一系列不同生殖细胞肿瘤中的表达。使用单克隆抗体分析了22个精原细胞瘤,27个胚胎癌,22个成熟和不成熟的畸胎瘤,8个卵黄囊瘤和1个绒毛膜癌以及30个正常睾丸。结果:在正常睾丸中,在成熟的生殖细胞和Leydig细胞中均观察到强信号。在检查的大多数肿瘤中,未检测到簇蛋白表达(84%)。在某些畸胎瘤(32%),胚胎癌(15%)和卵黄囊肿瘤(25%)中仅观察到局灶性弱表达。结论:我们的结果表明,簇蛋白与正常生殖细胞发育有关,并且簇蛋白表达的丧失可能在生殖细胞的恶性转化中起作用。版权所有2001 S. Karger AG,巴塞尔

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