Abstract:
:HER2 upregulation is related with poor outcome in many tumor types. Whereas anti-HER2 treatment is the standard approach as adjuvant therapy in HER2-overexpressing breast cancer, the frequent relapses reinforce the need for alternative treatments. Here we used next-generation sequencing (NGS) to evaluate miRNAs and circRNAs in the cell-lines HB4a and C5.2, where the latter is a HER2-overexpressing clone of the former, and also from two different populations of their secreted extracellular vesicles. Whereas circRNA-levels were stable, we found at least 16 miRNAs apparently modulated by HER2-expression. The miR223-3p, miR-421 and miR-21-5p were validated in an independent cohort of 431 breast cancer patients from The Cancer Genome Atlas (TCGA). The consistent modulation of these molecules and their possible involvement in the HER2-axis makes them promising new targets to overcome HER2-activation.
journal_name
Pharmacogenomicsjournal_title
Pharmacogenomicsauthors
Galli de Amorim M,Branco G,Valieris R,Tarcitano E,Tojal da Silva I,Ferreira de Araújo L,Noronha Nunes D,Dias-Neto Edoi
10.2217/pgs-2018-0182subject
Has Abstractpub_date
2019-05-01 00:00:00pages
493-502issue
7eissn
1462-2416issn
1744-8042journal_volume
20pub_type
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