Abstract
Breast cancer (BC) is a common malignant tumor, and circular RNA-trefoil factor 1 (circ-TFF1; hsa_circ_0061825) has been found to be highly expressed in BC tissues and cells and is associated with the poor prognosis of BC patients. However, the interaction between circ-TFF1 and microRNA in BC has not been studied. Quantitative real-time PCR was used to detect the expression of circ-TFF1, miR-129-2-3p, and interleukin (IL)-1 receptor-associated kinase 1 (IRAK1). Through the detection of cell proliferation, migration, invasion, tube formation, and apoptosis, cell function was assessed. The expression levels of angiogenesis-related proteins were detected by western blot. The interaction between miR-129-2-3p and circ-TFF1 or IRAK1 was verified by dual-luciferase reporter assay and RNA immunoprecipitation assay. Xenotransplantation experiments were used to confirm the function of circ-TFF1 in vivo. Circ-TFF1 and IRAK1 were significantly high expressed in BC tissues and cells. Silencing of circ-TFF1 reduced the proliferation, migration, invasion and tube formation, while increased the apoptosis of MDA-MB-361 and SK-Br-3 cells. MiR-129-2-3p was a target of circ-TFF1. Silencing of circ-TFF1 inhibited the malignant behavior of BC cells by releasing miR-129-2-3p. In addition, IRAK1 was a target of miR-129-2-3p. Overexpression of IRAK1 partially restored the inhibitory effect of miR-129-2-3p on cell progression. Animal experiments confirmed the anti-tumor effect of circ-TFF1 knockdown in vivo. Circ-TFF1 regulated the expression of IRAK1 by sponging miR-129-2-3p, thereby, promoting the development of BC. These data provided a novel targeted therapy for BC.
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Zhao, Y., Ren, F., Wang, X. et al. Circ-TFF1 Promotes Breast Cancer Progression Through the miR-129-2-3p/IRAK1 Axis. Biochem Genet 60, 2155–2170 (2022). https://doi.org/10.1007/s10528-022-10209-4
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DOI: https://doi.org/10.1007/s10528-022-10209-4