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Erschienen in: Head and Neck Pathology 3/2019

26.09.2018 | Original Paper

MicroRNA Profiling of Salivary Duct Carcinoma Versus Her2/Neu Overexpressing Breast Carcinoma Identify miR-10a as a Putative Breast Related Oncogene

verfasst von: Veronica Balatti, Steve Oghumu, Arianna Bottoni, Kati Maharry, Luciano Cascione, Paolo Fadda, Anil Parwani, Carlo Croce, O. Hans Iwenofu

Erschienen in: Head and Neck Pathology | Ausgabe 3/2019

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Abstract

Salivary duct carcinomas (SDC) and Her2/Neu3-overexpressing invasive breast carcinomas (HNPIBC/IBC) are histologically indistinguishable. We investigated whether common histopathologic and immunophenotypic features of SDC and IBC are mirrored by a similar microRNA (miRNA) profile. MiRNA profiling of 5 SDCs, 6 IBCs Her2/Neu3+, and 5 high-grade ductal breast carcinoma in situ (DCIS) was performed by NanoString platform. Selected miRNAs and HOXA1 gene were validated by RT-PCR. We observed similar miRNA expression profiles between IBC and SDC with the exception of 2 miRNAs, miR-10a and miR-142-3p, which were higher in IBC tumors. DCIS tumors displayed increased expression of miR-10a, miR-99a, miR-331-3p and miR-335, and decreased expression of miR-15a, miR-16 and miR-19b compared to SDC. The normal salivary gland and breast tissues also showed similar expression profiles. Interestingly, miR-10a was selectively increased in both IBC and normal breast tissue compared to SDC and normal salivary gland tissue. Moreover, our NanoString and RT-PCR data confirmed that miR-10a was upregulated in IBC and DCIS compared to SDC. Finally, we show downregulation of HOXA1, a miR-10 target, in IBC tumors compared to normal breast tissue. Taken together, our data demonstrates that, based on miRNA profiling, SDC is closely related to HNPIBC. Our results also suggest that miR-10a is differentially expressed in IBC compared to SDC and may have potential utility as a diagnostic biomarker in synchronous or metachronous malignant epithelial malignancies involving both organs. In addition, miR-10a could be playing an important role as a mammary-specific oncogene, involved in breast cancer initiation (DCIS) and progression (IBC), through mechanisms that include modulation of HOXA1 gene expression.
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Metadaten
Titel
MicroRNA Profiling of Salivary Duct Carcinoma Versus Her2/Neu Overexpressing Breast Carcinoma Identify miR-10a as a Putative Breast Related Oncogene
verfasst von
Veronica Balatti
Steve Oghumu
Arianna Bottoni
Kati Maharry
Luciano Cascione
Paolo Fadda
Anil Parwani
Carlo Croce
O. Hans Iwenofu
Publikationsdatum
26.09.2018
Verlag
Springer US
Erschienen in
Head and Neck Pathology / Ausgabe 3/2019
Elektronische ISSN: 1936-0568
DOI
https://doi.org/10.1007/s12105-018-0971-x

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