Abstract：
:The circadian clock confers daily rhythmicity on many biochemical and physiological functions and its disruption is associated with increased risks of developing obesity, diabetes, heart disease and cancer. Although, there are studies on the role of Bmal1 in carcinogenesis using germline, conditional or tissue-specific knockouts, it is still not well understood how BMAL1 gene affects cancer-related biological events at the molecular level. We, therefore, took an in vitro approach to understand the contribution of BMAL1 in this molecular mechanism using human breast epithelial cell lines by knocking out BMAL1 gene with CRISPR technology. We preferred epithelial cells over fibroblasts as the most of cancers originate from epithelial cells. After obtaining BMAL1 knockouts by targeting the gene at two different sites from non-tumorigenic MCF10A and invasive tumorigenic MDA-MB-231 cells, we analysed apoptosis and invasion properties of the cell lines as representative events in tumor development. BMAL1 disruption sensitized both cell lines to a bulky-DNA adduct forming agent (cisplatin) and a double-strand break-inducing agent (doxorubicin), while it enhanced the invasive properties of MDA-MB-231 cells. These results show that the disruption of clock genes may have opposing carcinogenic effects.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Korkmaz T,Aygenli F,Emisoglu H,Ozcelik G,Canturk A,Yilmaz S,Ozturk Ndoi
10.1038/s41598-018-34433-4subject
Has Abstractpub_date
2018-10-30 00:00:00pages
16023issue
1issn
2045-2322pii
10.1038/s41598-018-34433-4journal_volume
8pub_type
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