The Core-Clock Gene Impacts Cell Motility In Vitro and Invasiveness in A Zebrafish Xenograft Colon Cancer Model
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Malfunctions of circadian clock trigger abnormal cellular processes and influence tumorigenesis. Using an and xenograft model, we show that circadian clock disruption via the downregulation of the core-clock genes , , and impacts the circadian phenotype of , , and , and affects proliferation, apoptosis, and cell migration. In particular, both our and results suggest an impairment of cell motility and a reduction in micrometastasis formation upon knockdown of , accompanied by altered expression levels of and . Interestingly we show that differential proliferation and reduced tumour growth may be due to the additional influence of the host-clock and/or to the 3D tumour architecture. Our results raise new questions concerning host-tumour interaction and show that core-clock genes are involved in key cancer properties, including the regulation of cell migration and invasion by in zebrafish xenografts.
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