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• W2981652330 abstract "Abstract Background Long non coding RNAs (lncRNAs) are RNA molecules longer than 200 nucleotides that are not translated into proteins, but regulate the transcription of genes involved in different cellular processes, including cancer. Epidemiological analyses have demonstrated that parous women have a decreased risk of developing breast cancer in postmenopausal years if they went through a full term pregnancy in their early twenties. We here provide evidence of the role of BC200 in breast cancer and, potentially, in pregnancy’s preventive effect in reducing the lifetime risk of developing breast cancer. Methods Transcriptome analysis of normal breast of parous and nulliparous postmenopausal women revealed that several lncRNAs are differentially expressed in the parous breast. RNA sequencing of healthy postmenopausal breast tissue biopsies from eight parous and eight nulliparous women showed that there are 42 novel lncRNAs differentially expressed between these two groups. Screening of several of these 42 lncRNAs by RT-qPCR in different breast cancer cell lines, provided evidence that one in particular, lncEPCAM (more commonly known as BC200), was a strong candidate involved in cancer progression. Proliferation, migration, invasion and xerograph studies confirmed this hypothesis. Results The poorly studied oncogenic BC200 was selected to be tested in vitro and in vivo to determine its relevance in breast cancer and also to provide us with an understanding of its role in the increased susceptibility of the nulliparous women to cancer. Our results show that BC200 is upregulated in nulliparous women, and breast cancer cells and tissue. The role of BC200 is not completely understood in any of the breast cancer subtypes. We here provide evidence that BC200 has a role in luminal breast cancer as well as in the triple negative breast cancer subtype. Conclusion When overexpressed in luminal and triple negative breast cancer cell lines, BC200 shows increased proliferation, migration, and invasion in vitro. In vivo, overexpression of BC200 increased tumor size. Although treatment for cancer using lncRNAs as targets is in its infancy, the advancement in knowledge and technology to study their relevance in disease could lead to the development of novel treatment and preventive strategies for breast cancer." @default.
• W2981652330 created "2019-11-01" @default.
• W2981652330 creator A5000266407 @default.
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• W2981652330 creator A5068758884 @default.
• W2981652330 date "2019-10-23" @default.
• W2981652330 modified "2023-09-27" @default.
• W2981652330 title "BC200 overexpression contributes to luminal and triple negative breast cancer pathogenesis" @default.
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• W2981652330 doi "https://doi.org/10.1186/s12885-019-6179-y" @default.
• W2981652330 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6813071" @default.
• W2981652330 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/31646972" @default.
• W2981652330 hasPublicationYear "2019" @default.
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