Visualization of tissue kallikrein in human breast carcinoma by two-dimensional western blotting and immunohistochemistry.

A Hermann, P Buchinger, J Rehbock
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引用次数: 22

Abstract

Tissue kallikrein is well known to liberate the vasoactive peptide kallidin from L-kininogen. Recently it was reported to activate matrix degrading metalloproteinases in vitro and to be present in gastric carcinoma cells. By immunohistochemistry we localized tissue kallikrein in the cytoplasm of ductal breast cancer cells. In addition, two-dimensional Western blotting was used to further characterize its biochemical properties. By this method immunoreactive tissue kallikrein was found to have a molecular mass of 25 kDa and an isoelectric point close to pH 6. Furthermore its presence in human milk could be demonstrated.

二维western blotting和免疫组织化学技术在人乳腺癌组织中的可视化研究。
众所周知,组织激肽素能从l -激肽原中释放血管活性肽。近年来有报道在体外激活基质降解金属蛋白酶,并在胃癌细胞中存在。通过免疫组化,我们将组织钾化因子定位于导管乳腺癌细胞的细胞质中。此外,利用二维Western blotting进一步表征其生化特性。通过这种方法,发现免疫反应组织激肽肽的分子质量为25 kDa,等电点接近pH 6。此外,它也存在于人乳中。
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