期刊
ARCHIVES OF BIOCHEMISTRY AND BIOPHYSICS
卷 653, 期 -, 页码 63-70出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.abb.2018.04.017
关键词
circMYO9B; Proliferation; Invasion; miR-4316; FOXP4
Recently, circular RNAs (circRNAs) have been demonstrated as essential regulators in human cancers. However, the function and mechanism of circRNAs in breast cancer (BC) remain largely unknown and require to be investigated. In the present study, we found that circMY09B was highly expressed in BC tissues by bioinformatics analysis. And we showed that circMY09B expression was positively correlated with patients' prognosis. Moreover, we found that circMYO9B knockdown significantly suppressed the proliferation, migration and invasion of BC cells in vitro. In vivo assays also indicated that circMYO9B silence delayed tumor growth. In mechanism, we found that circMY09B promoted the expression of FOXP4 by sponging miR-4316 in BC cells. We showed that the expression of miR-4316 was inversely associated with that of circMY09B or FOXP4 in BC tissues. Finally, we found that restoration of FOXP4 expression significantly reversed the effects of circMY09B knockdown on BC cell proliferation, migration and invasion. In conclusion, our findings demonstrated a key role of circMYO9B/miR-4316/FOXP4 axis in regulating BC progression.
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