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miR-204-5p Represses Bone Metastasis via Inactivating NF-κB Signaling in Prostate Cancer

Qingde Wa, Sheng Huang, Jincheng Pan, Yubo Tang, Shaofu He, Xiaodong Fu, Xinsheng Peng, Xiao Chen, Chunxiao Yang, Dong Ren, Yan Huang, Zhuangwen Liao, Shuai Huang, Sciprofile linkChangye Zou
Published: 6 December 2019
Molecular Therapy - Nucleic Acids , Volume 18, pp 567-579; doi:10.1016/j.omtn.2019.09.008

Abstract: The prime issue derived from prostate cancer (PCa) is its high prevalence to metastasize to bone. MicroRNA-204-5p (miR-204-5p) has been reported to be involved in the development and metastasis in a variety of cancers. However, the clinical significance and biological functions of miR-204-5p in bone metastasis of PCa are still not reported yet. In this study, we find that miR-204-5p expression is reduced in PCa tissues and serum sample with bone metastasis compared with that in PCa tissues and serum sample without bone metastasis, which is associated with advanced clinicopathological characteristics and poor bone metastasis-free survival in PCa patients. Moreover, upregulation of miR-204-5p inhibits the migration and invasion of PCa cells in vitro, and importantly, upregulating miR-204-5p represses bone metastasis of PCa cells in vivo. Our results further demonstrated that miR-204-5p suppresses invasion, migration, and bone metastasis of PCa cells via inactivating nuclear factor κB (NF-κB) signaling by simultaneously targeting TRAF1, TAB3, and MAP3K3. In clinical PCa samples, miR-204-5p expression negatively correlates with TRAF1, TAB3, and MAP3K3 expression and NF-κB signaling activity. Therefore, our findings reveal a new mechanism underpinning the bone metastasis of PCa, as well as provide evidence that miR-204-5p might serve as a novel serum biomarker in bone metastasis of PCa.This study identifies a novel functional role of miR-204-5p in bone metastasis of prostate cancer and supports the potential clinical value of miR-204-5p as a serum biomarker in bone metastasis of PCa.
Keywords: microRNA / PCA / functional / bone metastasis / NF κB signaling / 5p in bone

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