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Migration and Invasion Enhancer 1 Is an NF-ĸB-Inducing Gene Enhancing the Cell Proliferation and Invasion Ability of Human Prostate Carcinoma Cells In Vitro and In Vivo

1
Department of Anatomy, College of Medicine, Chang Gung University, Kwei-Shan, Tao-Yuan 33302, Taiwan
2
Institute of Biomedicine, College of Medicine, Chang Gung University, Kwei-Shan, Tao-Yuan 33302, Taiwan
3
Department of Urology, Chang Gung Memorial Hospital, Kwei-Shan, Tao-Yuan 33302, Taiwan
4
Graduate Institute of Clinical Medical Science, College of Medicine, Chang Gung University, Kwei-Shan, Tao-Yuan 33302, Taiwan
5
School of Nursing, College of Medicine, Chang Gung University, Kwei-Shan, Tao-Yuan 33302, Taiwan
*
Author to whom correspondence should be addressed.
These authors contributed equally.
Cancers 2019, 11(10), 1486; https://doi.org/10.3390/cancers11101486
Received: 6 September 2019 / Revised: 24 September 2019 / Accepted: 30 September 2019 / Published: 2 October 2019
: Migration and invasion enhancer 1 (MIEN1) is a membrane-anchored protein and exists in various cancerous tissues. However, the roles of MIEN1 in prostate cancer have not yet been clearly addressed. We determined the expression, biological functions, and regulatory mechanisms of MIEN1 in the prostate. The results of immunohistochemical analysis indicated that MIEN1 was expressed specifically in epithelial cells and significantly higher in adenocarcinoma as compared to in normal tissues. MIEN1 enhanced in vitro cell proliferation, invasion, and in vivo tumorigenesis. Meanwhile, MIEN1 attenuated cisplatin-induced apoptosis in PC-3 cells. Overexpression of NF-ĸB-inducing kinase (NIK) enhanced MIEN1 expression, while overexpression of NF-ĸB inhibitor α (IĸBα) blocked MIEN1 expression in PC-3 cells. In prostate carcinoma cells, MIEN1 provoked Akt phosphorylation; moreover, MIEN1 downregulated N-myc downstream regulated 1 (NDRG1) but upregulated interleukin-6 (IL-6) gene expression. MK2206, an Akt inhibitor, impeded the modulation of MIEN1 on NDRG1 and IL-6 expressions. Our studies suggest that MIEN1 is an NF-ĸB downstream oncogene in the human prostate. Accordingly, the modulation of Akt signaling in the gene expressions of NDRG1 and IL-6 may account for the functions of MIEN1 in cell proliferation, invasion, and tumorigenesis in prostate carcinoma cells. View Full-Text
Keywords: prostate; MIEN1; Akt; NF-B; IL-6; NDRG1; tumorigenesis; JSH-23; MK2206 prostate; MIEN1; Akt; NF-B; IL-6; NDRG1; tumorigenesis; JSH-23; MK2206
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MDPI and ACS Style

Chang, K.-S.; Tsui, K.-H.; Lin, Y.-H.; Hou, C.-P.; Feng, T.-H.; Juang, H.-H. Migration and Invasion Enhancer 1 Is an NF-ĸB-Inducing Gene Enhancing the Cell Proliferation and Invasion Ability of Human Prostate Carcinoma Cells In Vitro and In Vivo. Cancers 2019, 11, 1486.

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