breast cancer tissues; adjacent tissues; tumors
sum-1315; MCF7; MDA-MB-231; MCF10A
cell line-derived xenograft
PI3K/AKT (promotes); proliferation (promotes); apoptosis (inhibits); cell cycle (promotes)
RT-qPCR; Clinical Sample Validation; Transfection; CCK8; Colony Formation Assay; Annexin V/PI Flow Cytometry; Cell Cycle Assay; Western Blot; In Vivo Animal Model
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circ_103809 is up-regulated in breast cancer tissues and cell lines. It promotes breast cancer cell proliferation, accelerates cell-cycle progression, inhibits apoptosis, and enhances tumor formation in vivo, at least partly by activating the PI3K/AKT signaling pathway (increased p-AKT and BCL2, decreased Bax upon knockdown reversal).
0.5442
circ_103809 promotes breast cancer progression by regulating the PI3K/AKT signaling pathway.
combined biological and clinical study