Wnt Signaling Regulation of Tissue Architecture (EMT and MET) and Morphogenesis

Fifis, Theodora; Tran, Bang Manh; Schwab, Renate; Johanson, Timothy M.; Warner, Nadia; Barker, Nick; Vincan, Elizabeth

doi:10.1002/9781118444122.ch24

Cited by 1 publication

(1 citation statement)

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“…Among them, the release of a key protein of the Wnt signaling pathway, β-catenin is usually degraded by phosphorylation and targeted destruction of the Axin-APC-GSK3β-β-catenin complex. Subsequently, β-catenin migrates into the nucleus and binds to the T-cell factor/lymphoid enhancer-binding factor (TCF/LEF) transcription site to stimulate the transcription of the Wnt target gene, thus affecting tumor cell proliferation, invasion and metastasis as well as drug sensitivity ( 18 , 19 ).…”

Section: Discussionmentioning

confidence: 99%

The action mechanism of lncRNA-HOTAIR on the drug resistance of non-small cell lung cancer by regulating Wnt signaling pathway

Guo

Cao

et al. 2018

Exp Ther Med

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The action mechanism of long non-coding ribonucleic acid-homeobox transcript antisense ribonucleic acid (lncRNA-HOTAIR) in the regulation of the Wnt signaling pathway on the drug resistance of non-small cell lung cancer was investigated. Forty eight patients with non-small cell lung cancer, who were treated with cisplatin (DDP) as neoadjuvant chemotherapy, were selected from the specimen bank of the Department of Pathology of Peking Union Medical College Hospital. Reverse transcription-polymerase chain reaction (RT-PCR) was used to detect the messenger RNA (mRNA) level of lncRNA-HOTAIR in cancer and cancer-adjacent tissues. The correlation curve of the expression of lncRNA-HOTAIR with the overall survival (OS) was plotted using the Kaplan-Meier method. NCI-H1299 DDP-resistant cell lines were constructed, and the half maximal inhibitory concentration (IC50) value was measured. The expression of lnc-HOTAIR in NCI-H1299/DDP cells was detected by the target interference of small interfering RNA (siRNA). The effect of si-HOTAIR on cell resistance was detected by Cell Counting Kit-8 (CCK-8). Western blot analysis was used to detect the effects of si-HOTAIR on multidrug resistance proteins, multidrug resistance-associated protein 1 (MRP1) and multidrug resistance 1 (MDR1), and Wnt signaling pathways, Wnt3a, adenomatous polyposis coli (APC) and β-catenin. The mRNA level of lncRNA-HOTAIR in cancer tissues was significantly higher than that in cancer-adjacent tissues (P<0.05), and the high expression of lncRNA-HOTAIR indicated that the OS of patients was shortened (P<0.05). The IC50 of NCI-H1299/DDP cells inhibiting DDP was 127.82 µM, which was significantly higher than that of parental NCI-H1299 cells (IC50=8.40 µM) (P<0.05). si-HOTAIR interference significantly decreased the sensitivity of cells to DDP, the IC50 of cells was decreased from 131.85 to 44.34 µM (P<0.05), the expression levels of MRP1 and MDR1 were significantly decreased, and the activation of Wnt signaling pathway was significantly inhibited (P<0.05). Thus, lncRNA-HOTAIR plays an important role in the occurrence and development of non-small cell lung cancer, and it may be an important factor in the clinical prognosis of patients with non-small cell lung cancer.

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Section: Discussionmentioning

confidence: 99%