Detection of the extracellular domain of c‐erbB‐2 oncoprotein in sera from patients with various carcinomas: Correlation with tumor markers

Detection of the extracellular domain of c‐erbB‐2 oncoprotein in sera from patients with various carcinomas: Correlation with tumor markers
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各种癌症患者血清中c-erbB-2癌蛋白胞外结构域的检测:与肿瘤标志物的相关性

DOI:
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发表时间:
1993
期刊:
Journal of clinical laboratory analysis (Print)
影响因子:
--
通讯作者:
Ping Zhang
Ping Zhang
中科院分区:
--
文献类型:
--
作者:
James T. Wu;M. Astill;Ping Zhang

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使用Triton诊断公司的血清酶免疫分析(EIA)试剂盒,我们检测了含有高度升高的肿瘤标志物的随机血清中的c-erbB-2癌蛋白活性,以及表达高癌蛋白活性的癌症患者的系列标本中的c-erbB-2癌蛋白活性。不仅在乳腺癌和卵巢癌的血清中,而且在结直肠癌、胰腺癌和前列腺癌的血清中,甚至在原发性肝癌的血清中,都发现了癌蛋白活性的升高。当癌蛋白在单个患者中过度表达时,通常在一系列血清标本中癌蛋白活性与显性肿瘤标志物水平之间存在很好的相关性。在大小排斥S-200柱层析的基础上,我们在癌症患者的混合血清中只检测到一个含有c-erb B-2癌蛋白活性的分子,而在乳腺癌组织的胞浆中检测到两个大小略有不同的癌蛋白。在Superose 12 HR色谱柱上,癌蛋白的血清部分被洗脱在靠近免疫球蛋白的位置,这表明癌蛋白的胞外区在血清中以二聚体的形式存在。©1993 Wiley-Liss,Inc.
Using a serum enzyme immunoassay (EIA) kit from Triton diagnostics we detected c‐erbB‐2 oncoprotein activity in random sera containing highly elevated tumor markers and also in serial specimens from cancer patients expressing elevated oncoprotein activities. Elevated oncoprotein activity was found not only in sera of breast and ovarian carcinomas but also in sera from colorectal, pancreatic, and prostate carcinomas and even from primary hepatoma. Whenever oncoprotein was overexpressed in an individual patient, there was usually an excellent correlation between the oncoprotein activity and the level of dominant tumor marker in serial serum specimens. Based on the size exclusion S‐200 column chromatography, we found only a single molecule containing c‐erbB‐2 oncoprotein activity in pooled sera from cancer patients whereas two oncoproteins slightly different in size were detected in breast tumor tissue cytosol. Using HPLC on a Superose 12 HR column, the serum portion of the oncoprotein was eluted at a position near IgG, suggesting that the extracellular domain of the oncoprotein exists as a dimer in the serum. © 1993 Wiley‐Liss, Inc.
抗肽抗体可检测尿液中与癌基因相关的蛋白质。
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