The upregulation of TMPRSS4, partly ascribed to the downregulation of miR‑125a‑5p, promotes the growth of human lung adenocarcinoma via the NF‑κB signaling pathway

International Journal of Oncology
Xiaoxi FanShun Xu

Abstract

In this study, with the aid of microarray technology, transmembrane protease serine 4 (TMPRSS4), a novel member of the serine protease family, was found to be upregulated in the majority of lung adenocarcinoma (LUAD) tissues compared to normal lung tissues. Of note, the clinical significance of TMPRSS4 in LUAD has not yet been reported, at least to the best of our knowledge. Through immunohistochemistry assays, we found that TMPRSS4 was overexpressed in LUAD tissues and that the TMPRSS4 expression level was also proportionally associated with the AJCC clinical stage, T stage and pathological grade. Moreover, a high expression of TMPRSS4 was found to be associated with adverse outcomes and was a significant independent factors predicting a poor prognosis. To elucidate the possible mechanisms responsible for the overexpression of TMPRSS4, we examined at microRNAs (miRNAs or miRs), which are small non‑coding RNAs commonly dysregulated in human malignancies and are known to promote carcinogenesis by interacting with other types of RNAs. By means of bioinformatics analysis, a miRNA potentially targeting TMPRSS4 mRNA, namely miR‑125a‑5p, was selected. Dual luciferase reporter gene assays were then performed to verify the interaction....Continue Reading

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Citations

Jun 3, 2021·International Journal of Molecular Sciences·Siddarth KannanEmyr Yosef Bakker

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Datasets Mentioned

BETA
GSE43458
GPL6244

Methods Mentioned

BETA
transfection
PCR
reverse transcription PCR
Protein assay
Flow cytometry

Software Mentioned

R
limma
miRanda
GraphPad prism
MicroCosm
SPSS
TargetScan

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