Immunohistochemical determination of protein kinase C expression and proliferative activity in human brain tumors

Immunohistochemical determination of protein kinase C expression and proliferative activity in human brain tumors
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人脑肿瘤中蛋白激酶C表达和增殖活性的免疫组织化学测定

DOI:
10.1007/bf00688205
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发表时间:
2004
影响因子:
12.7
通讯作者:
Wolfgang Wechsler
Wolfgang Wechsler
中科院分区:
医学1区
文献类型:
--
作者:
Guido Reifenberger;M. Deckert;Wolfgang Wechsler

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摘要蛋白激酶 C (PKC) 是佛波酯肿瘤启动子的主要受体,是一种磷脂和钙依赖性磷酸化酶,在多种基本细胞功能(包括细胞增殖控制)所需的细胞内信号转导中发挥重要作用。为了确定 PKC 在人类神经源性肿瘤中的表达,我们使用单克隆抗体 C5 通过免疫组织化学研究了 121 个人类神经系统肿瘤。将结果与中间丝蛋白、桥斑蛋白和增殖相关核抗原 Ki-67 的免疫组织化学染色进行比较。除了正常星形胶质细胞和反应性星形胶质细胞的强染色外,在所有类型的神经胶质瘤的肿瘤细胞中都一致观察到 C5 免疫反应性。然而,不同肿瘤类型之间 C5 阳性肿瘤细胞的比例有所不同,其中星形细胞瘤和室管膜下瘤表现出最强的免疫反应性。在其他神经胶质瘤中,尤其是恶性程度较高的神经胶质瘤中,可以观察到 C5 表达的相当大的异质性。与低级别胶质瘤相比,高级别胶质瘤中 C5 免疫染色肿瘤细胞的百分比有较低的趋势,并且与 Ki-67 染色的比较经常揭示增殖活性和 C5 免疫反应性之间的反比关系。除神经胶质瘤外,我们还发现 7 个神经鞘瘤中的 3 个和 18 个脑膜瘤中的 6 个部分 C5 阳性。研究的所有其他肿瘤,包括髓母细胞瘤和转移癌,均为 C5 阴性。因此,我们的结果表明,使用单克隆抗体 C5 对 PKC 进行免疫组织化学可能有助于神经肿瘤学中的组织病理学肿瘤分类。
SummaryProtein kinase C (PKC), the major receptor for phorbol ester tumor promotors, is a phospholipid- and calcium-dependent phosphorylating enzyme which plays an important role in the intracellular signal transduction necessary for a variety of basic cellular functions including the control of cell proliferation. To determine the expression of PKC in human neurogenic tumors we investigated 121 tumors of the human nervous system by means of immunohistochemistry using the monoclonal antibody C5. The results were compared with immunohistochemical staining for intermediate filament proteins, desmoplakins, and the proliferation-associated nuclear antigen Ki-67. Besides strong staining of normal and reactive astrocytes, C5 immunoreactivity was consistently observed in tumor cells of all types of gliomas. However, the fraction of C5 positive tumor cells varied between the different tumor types with astrocytomas and subependymomas demonstrating the strongest immunoreactivity. In the other gliomas, especially those of higher malignancy, a considerable heterogeneity in C5 expression could be observed. There was a tendency for the percentage of C5 immunostained tumor cells being lower in high-grade gliomas compared to low-grade ones and comparison with Ki-67 staining frequently revealed an inverse relationship between proliferative activity and C5 immunoreactivity. Besides the gliomas we found 3 of 7 neurinomas and 6 of 18 meningiomas which were partially C5 positive. All other tumors investigated including medulloblastomas and metastatic carcinomas were C5 negative. Our results thus indicate that immunohistochemistry for PKC using the monoclonal antibody C5 could be an useful aid for histopathological tumor classification in neurooncology.
磷脂/Ca2 依赖性蛋白激酶的多克隆抗体以及该酶在大鼠脑中的免疫细胞化学定位。
DOI: 10.1073/pnas.82.9.3030
发表时间: 1985
影响因子: 11.1
作者:
Girard,PR;Mazzei,GJ;Wood,JG;Kuo,JF
通讯作者: Kuo,JF
免疫过氧化物酶组织化学在人类神经肿瘤学中的最新应用。
DOI: --
发表时间: 1987
影响因子: 4.6
作者:
Perentes,E;Rubinstein,LJ
通讯作者: Rubinstein,LJ
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DOI: 10.1126/science.2431483
发表时间: 1986
期刊: Science (New York, N.Y.)
影响因子: --
作者:
Vartanian,T;Szuchet,S;Dawson,G;Campagnoni,AT
通讯作者: Campagnoni,AT
绘制大脑第二信使系统图谱:腺苷酸环化酶和蛋白激酶 C 的差异定位。
DOI: 10.1073/pnas.83.11.4053
发表时间: 1986
影响因子: 11.1
作者:
Worley,PF;Baraban,JM;DeSouza,EB;Snyder,SH
通讯作者: Snyder,SH
人类结肠癌中蛋白激酶 C 和 Ca2 依赖性蛋白激酶的水平发生改变。
DOI: --
发表时间: 1987
期刊: Cancer research
影响因子: 11.2
作者:
Guillem,JG;O'Brian,CA;Fitzer,CJ;Forde,KA;LoGerfo,P;Treat,M;Weinstein,IB
通讯作者: Weinstein,IB