Abstract
Rsf-1 (HBXAP) was recently reported to play roles in tumorigenesis and tumor progression. There have been many reports referred to Rsf-1 overexpression in various cancers and associated with the malignant behavior of cancer cells. However, the molecular mechanism of Rsf-1 in non-small cell lung cancer aggressiveness remains ambiguous. In the present study, we found that there was a significant association between Rsf-1 overexpression and poor overall survival (p = 0.028) in lung cancer. Furthermore, knockdown of Rsf-1 expression in H1299 and H460 cells with high endogenous Rsf-1 expression inhibited cell migration and invasion and downregulated MMP2 expression and nuclear levels of NF-κB. NF-κB inhibitor could also block the effect of Rsf-1 in regulation of MMP2 expression. Further experiments demonstrated that Rsf-1 depletion restrained NF-κB reporter luciferase activity and downregulated bcl-2 and p-IκB protein level. In conclusion, we demonstrated that Rsf-1 was overexpressed in lung cancer and associated with poor survival. Rsf-1 regulated cell invasion through MMP2 and NF-κB pathway.
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The study protocol was approved by the institutional reviewer board of China Medical University. All participants provided written informed consent, and the investigation was conducted according to the principles expressed in the Declaration of Helsinki.
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Zhang, X., Fu, L., Xue, D. et al. Overexpression of Rsf-1 correlates with poor survival and promotes invasion in non-small cell lung cancer. Virchows Arch 470, 553–560 (2017). https://doi.org/10.1007/s00428-017-2102-6
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DOI: https://doi.org/10.1007/s00428-017-2102-6