Epithelial keratins: Biology and implications as diagnostic markers for liquid biopsies

被引:56
作者
Werner, Stefan [1 ]
Keller, Laura [1 ]
Pantel, Klaus [1 ]
机构
[1] Univ Med Ctr Hamburg Eppendorf, Inst Tumor Biol, Hamburg, Germany
基金
欧盟地平线“2020”;
关键词
Keratins; Liquid biopsy; Circulating tumor cells; EMT; Tumor biomarker; Tumor cell dissemination; CIRCULATING TUMOR-CELLS; BREAST-CANCER PATIENTS; BONE-MARROW MICROMETASTASIS; INTERMEDIATE-FILAMENTS; DNA METHYLATION; MESENCHYMAL PLASTICITY; CYTOKERATIN EXPRESSION; CLINICAL-RELEVANCE; PERIPHERAL-BLOOD; GENE-EXPRESSION;
D O I
10.1016/j.mam.2019.09.001
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Keratins are essential elements of the cytoskeleton of normal and malignant epithelial cells. Because carcinomas commonly maintain their specific keratin expression pattern during malignant transformation, keratins are extensively used as tumor markers in cancer diagnosis including the detection of circulating tumor cells in blood of carcinoma patients. Interestingly, recent biological insights demonstrate that epithelial keratins should not only be considered as mere tumor markers. Emerging evidence suggests an active biological role of keratins in tumor cell dissemination and metastasis. In this review, we illustrate the family of keratin proteins, summarize the latest biological insights into keratin function related to cancer metastasis and discuss the current use of keratins for detection of CTCs and other blood biomarkers used in oncology.
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页数:11
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