Abstract:
:Breast cancer (BC) has a higher incidence in young Lebanese woman as compared to the West. We assessed the microRNA (miRNA) microarray profile of tissues derived from Lebanese patients with early BC and performed mRNA-miRNA integration analysis. 173 miRNAs were significantly dysregulated in 45 BC versus 17 normal adjacent breast tissues, including 74 with a fold change more than two of which 17 were never reported before in cancer. Integration analysis of mRNA-miRNA microarray data revealed a potential role of 51 dysregulated miRNA regulating 719 tumor suppressive or oncogenic mRNA associated with increased proliferation and decreased migration and invasion. We then performed a comparative miRNA microarray profile analysis of BC tissue between these 45 Lebanese and 197 matched American BC patients. Notably, Lebanese BC patients had 21 exclusively dysregulated miRNA (e.g. miR-31, 362-3p, and 663) and 4 miRNA with different expression manner compared to American patients (e.g. miR-1288-star and 324-3p). Some of these differences could reflect variation in patient age at diagnosis or ethnic variation affecting miRNA epigenetic regulation or sequence of miRNA precursors. Our data provide a basis for genetic/epigenetic investigations to explore the role of miRNA in early stage BC in young women, including ethnic specific differences.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Nassar FJ,Talhouk R,Zgheib NK,Tfayli A,El Sabban M,El Saghir NS,Boulos F,Jabbour MN,Chalala C,Boustany RM,Kadara H,Zhang Z,Zheng Y,Joyce B,Hou L,Bazarbachi A,Calin G,Nasr Rdoi
10.1038/s41598-017-16978-ysubject
Has Abstractpub_date
2017-12-04 00:00:00pages
16829issue
1issn
2045-2322pii
10.1038/s41598-017-16978-yjournal_volume
7pub_type
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