Circulating tumor cells and breast cancer-specific mutations in primary breast cancer
| Autor: | Daniel Pindak, Juraj Benca, Jozef Mardiak, Tatiana Sedlackova, Jan Macuch, Silvia Jurisova, Gabriela Sieberova, Michal Mego, Gabriel Minarik, Gabriela Repiská, Lucia Krasnicanova, Marian Karaba, Katarina Kalavska |
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| Rok vydání: | 2019 |
| Předmět: |
Cancer Research
Oncogene business.industry Cancer Articles Cell cycle medicine.disease Molecular medicine Phenotype Primary tumor 03 medical and health sciences 0302 clinical medicine Circulating tumor cell Oncology 030220 oncology & carcinogenesis Cancer research medicine 030211 gastroenterology & hepatology Epithelial–mesenchymal transition business skin and connective tissue diseases |
| Zdroj: | Molecular and clinical oncology. 12(6) |
| ISSN: | 2049-9450 |
| Popis: | Circulating tumor cells (CTCs) play a pivotal role in tumor dissemination and progression, and are considered to be a critical part of the metastatic cascade. The aim of the present research article was to examine breast cancer-specific mutations in primary breast cancer (PBC) using targeted resequencing. A total of 78 patients with PBC were enrolled into this translational study. Reverse transcription-quantitative PCR assay for the expression of epithelial markers (CK19) or epithelial-to-mesenchymal transition (EMT)-related genes (TWIST1, SNAIL1, SLUG and ZEB1) was applied for identification of CTCs prior to surgery. Total DNA was isolated from fresh frozen primary tumors. Sequencing was performed by Agilent SureSelect target enrichment and Illumina paired-end sequencing on the MiSeq platform. The most commonly affected genes were TP53 (mutated in 21 tumors; 26.9%), followed by PIK3CA (mutated in 16 tumors; 20.5%) and BRCA1/2 (mutated in 7 tumors, BRCA1 n=2 and BRCA2 n=5; 9.0%). In our cohort, a significantly higher proportion of patients with epithelial CTCs harbored mutations in the BRCA1/2 genes in the tumor tissue. There were no mutations in specific genes associated with CTCs with the EMT phenotype. To the best of our knowledge, this study is the first to report a correlation between the presence of epithelial CTCs in the peripheral blood and mutations of the BRCA1/2 genes in primary tumor tissue. |
| Databáze: | OpenAIRE |
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