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Background

Nucleolar prominence is a biomarker of prostate cancer (CaP), and the nucleolar protein block of proliferation 1 (BOP1) participates in the development of CaP, which has great significance for CaP therapy. Thus, this study explored the mechanism of BOP1 in CaP development.

Methods

BOP1 expression levels in the tumor tissues of CaP patients and in PC3 tumor cells were determined. The viability, apoptosis rate of PC3 cells, and apoptosis-related proteins levels were determined to explore the effect of BOP1 on tumor-cell growth in vitro. BOP1 function in the metastasis of PC3 cells was further assessed by Transwell experiment. We also studied the influence of BOP1 on the expression of mitogen-activated protein kinase (MAPK) pathway-related proteins and investigated the regulatory effect of BOP1 on dual-specificity phosphatase 6 (DUSP6).

Results

BOP1 expression was upregulated in the tumor tissues and PC3 cells of CaP patients. BOP1 knockout reduced the activity of PC3 cells and induced apoptosis, significantly inhibiting the metastasis of PC3 cells. DUSP6 was overexpressed in tumor tissues and PC3 cells. BOP1 knockout inhibited DUSP6 expression and the MAPK pathway. DUSP6 overexpression reversed the inhibition of BOP1 siRNA (si-BOP1) on PC3 cells and the activated MAPK signaling pathway.

Conclusions

This finding demonstrated that BOP1 promoted CaP progression by regulating the DUSP6/MAPK pathway."xsd:string
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http://purl.uniprot.org/citations/37681336http://purl.uniprot.org/core/title"BOP1 Promotes Prostate Cancer through the DUSP6/MAPK Pathway."xsd:string
http://purl.uniprot.org/citations/37681336http://purl.uniprot.org/core/volume"76"xsd:string
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