@article{TCR31069,
author = {Hongyu Wang and Ling Ouyang and Shan Gao},
title = {Effects of antisense lncRNA PCBP1-AS1 on biological behaviors of vulvar squamous carcinoma cells by regulating TRAF5 and NF-κB expression},
journal = {Translational Cancer Research},
volume = {8},
number = {4},
year = {2019},
keywords = {},
abstract = {Background: Given antisense long noncoding RNAs (lncRNAs) poly C binding protein-1 antisense RNA1 (PCBP1-AS1) was significantly co-expressed with tumor necrosis factor receptor associated factor 5 (TRAF5) mRNA in vulvar squamous cell carcinoma (VSCC). TRAF5 could mediate nuclear factor kappa B (NF-κB) activation and regulate biological behaviors of tumor cells. Herein, we determined whether PCBP1-AS1 could affect the tumor behaviors of VSCC by regulating TRAF5 and NF-κB expression.
Methods: The expression of PCBP1-AS1 and TRAF5 mRNA in VSCC tissues and cells was detected via quantitative real-time polymerase chain reaction, while the protein expression levels of TRAF5, p65, p-p65, c-Rel, and IκBα were examined by immunoblotting. After the overexpression of PCBP1-AS1 and RNA interference knockdown of TRAF5 in SW954 cells, NF-κB activation-nuclear translocation fluorescence, the CCK-8 assay, Annexin V-FITC & PI fluorescent staining, the wound healing assay, and the Transwell invasion assay were performed to evaluate the activity of NF-κB, cellular proliferation, apoptosis, migration, and invasion.
Results: PCBP1-AS1 and TRAF5 mRNA expression were downregulated in VSCC tissues and were correlated with patient clinicopathological characteristics. The protein expression of TRAF5, p65, p-p65, c-Rel, and IκBα protein in VSCC tissues was significantly decreased. We demonstrated that PCBP1-AS1 positively regulated the expression of TRAF5. PCBP1-AS1 overexpression or knockdown of TRAF5 regulated the activity of the NF-κB pathway. Increase of PCBP1-AS1 significantly inhibited proliferation and enhanced apoptosis via TRAF5-mediated regulation of the NF-κB signaling pathway. Additionally, PCBP1-AS1 can suppress migration and invasion in an NF-κB-independent manner.
Conclusions: As a tumor suppressor gene, PCBP1-AS1 regulates the proliferation and apoptosis of VSCC via TRAF5-mediated expression of the NF-κB.},
issn = {2219-6803}, url = {https://tcr.amegroups.org/article/view/31069}
}