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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Telomerase activity: A biomarker of cell proliferation, not malignant transformation
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Telomerase activity: A biomarker of cell proliferation, not malignant transformation

机译:端粒酶活性:细胞增殖而不是恶性转化的生物标志物

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摘要

Telomerase activity is readily detected in most cancer biopsies, but not in premalignant lesions or in normal tissue samples with a few exceptions that include germ cells and hemopoietic stem cells. Telomerase activity may, therefore, be a useful biomarker for diagnosis of malignancies and a target for inactivation in chemotherapy or gene therapy. These observations have led to the hypothesis that activation of telomerase may be an important step in tumorigenesis. To test this hypothesis, we studied telomerase activity in isogeneic samples of uncultured and cultured specimens of normal human uroepithelial cells (HUCs) and in uncultured and cultured biopsies of superficial and myoinvasive transitional cell carcinoma (TCC) of the bladder.
机译:在大多数癌症活检组织中很容易检测到端粒酶活性,但在恶变前病变或正常组织样品中则未检测到,除了少数例外,包括生殖细胞和造血干细胞。因此,端粒酶活性可能是诊断恶性肿瘤的有用生物标志物,也是化学疗法或基因疗法中失活的靶标。这些观察结果导致以下假设:端粒酶的激活可能是肿瘤发生中的重要步骤。为了检验该假设,我们研究了正常人尿路上皮细胞(HUC)的未培养和培养标本的同基因样品以及膀胱浅表和肌浸润性移行细胞癌(TCC)的未培养和培养的活检样品中的端粒酶活性。

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