scholarly journals miR-577 suppresses cell proliferation and epithelial-mesenchymal transition by regulating the WNT2B mediated Wnt/β-catenin pathway in non-small cell lung cancer

2018 ◽  
Author(s):  
Bin Wang ◽  
Liwei Sun ◽  
Jinduo Li ◽  
Rong Jiang
Keyword(s):  
Lung Cancer ◽  
Cell Proliferation ◽  
Small Cell Lung Cancer ◽  
Cell Lung Cancer ◽  
Epithelial Mesenchymal Transition ◽  
Small Cell ◽  
Small Cell Lung ◽  
Mesenchymal Transition

scholarly journals Upregulation of IL-11, an IL-6 Family Cytokine, Promotes Tumor Progression and Correlates with Poor Prognosis in Non-Small Cell Lung Cancer

2018 ◽  
Vol 45 (6) ◽  
pp. 2213-2224 ◽  
Author(s):  
Meng Zhao ◽  
Yahui Liu ◽  
Ran Liu ◽  
Jin Qi ◽  
Yongwang Hou ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Cell Proliferation ◽  
Small Cell Lung Cancer ◽  
Cell Lung Cancer ◽  
Poor Prognosis ◽  
Epithelial Mesenchymal Transition ◽  
Small Cell ◽  
Small Cell Lung ◽  
Mesenchymal Transition

Background/Aims: Cytokines are key players in tumorigenesis and are potential targets in cancer treatment. Although IL-6 has attracted considerable attention, interleukin 11 (IL-11), another member of the IL-6 family, has long been overlooked, and little is known regarding its specific function in non-small cell lung cancer (NSCLC). In this study, we explored IL-11’s role in NSCLC and the detailed mechanism behind it. Methods: Cell proliferation in response to IL-11 was determined by colony formation, BrdU incorporation and MTS (3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium) assay. Cell motility was measured by Transwell and wound healing assays. NSCLC xenograft models were used to confirm oncogenic function of IL-11 in vivo. Immunohistochemical staining and western blot assay were performed to detect epithelial–mesenchymal transition (EMT) markers and cell signaling pathway alterations. Eighteen NSCLC patients and 5 normal lung samples were collected together with data from an online database to determine the link between IL-11 expression and malignant progression. Results: We observed that IL-11 was upregulated in NSCLC samples compared with normal tissue samples and correlated with poor prognosis. Data from in vitro and in vivo models indicated that IL-11 promotes cell proliferation and tumorigenesis. Cell migration and invasion were also enhanced by IL-11. Epithelial–mesenchymal transition (EMT) was also observed after IL-11 incubation. Furthermore, IL-11 activated AKT and STAT3 in our experimental models. In addition, we observed that hypoxia induced IL-11 expression in NSCLC cells. Deferoxamine (DFX) or dimethyloxalylglycine (DMOG) induced hypoxia-inducible factor 1-alpha (HIF1α) upregulation, which enhanced IL-11 expression in NSCLC cells. Conclusions: Taken together, our results indicate that IL-11 is an oncogene in NSCLC, and elucidating the mechanism behind it may provide insights for NSCLC treatment.

scholarly journals ARHGAP10 inhibits the epithelial–mesenchymal transition of non-small cell lung cancer by inactivating PI3K/Akt/GSK3β signaling pathway

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Lan-Lan Lin ◽  
Fan Yang ◽  
Dong-Huan Zhang ◽  
Cong Hu ◽  
Sheng Yang ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Small Cell Lung Cancer ◽  
Signaling Pathway ◽  
Cell Lung Cancer ◽  
Rho Gtpase ◽  
Epithelial Mesenchymal Transition ◽  
Essential Element ◽  
Small Cell ◽  
Small Cell Lung ◽  
Mesenchymal Transition

Abstract Background Rho GTPase activating protein 10 (ARHGAP10) has been implicated as an essential element in multiple cellular process, including cell migration, adhesion and actin cytoskeleton dynamic reorganization. However, the correlation of ARHGAP10 expression with epithelial–mesenchymal transition (EMT) in lung cancer cells is unclear and remains to be elucidated. Herein, we investigated the relationship between the trait of ARHGAP10 and non-small cell lung cancer (NSCLC) pathological process. Methods Immunohistochemistry was conducted to evaluate the expression of ARHGAP10 in NSCLC tissues. CCK-8 assays, Transwell assays, scratch assays were applied to assess cell proliferation, invasion and migration. The expression levels of EMT biomarkers and active molecules involved in PI3K/Akt/GSK3β signaling pathway were examined through immunofluorescence and Western blot. Results ARHGAP10 was detected to be lower expression in NSCLC tissues compared with normal tissues from individuals. Moreover, overexpression of ARHGAP10 inhibited migratory and invasive potentials of A549 and NCI-H1299 cells. In addition, ARHGAP10 directly mediated the process of EMT via PI3K/Akt/GSK3β pathway. Meanwhile, activation of the signaling pathway of insulin-like growth factors-1 (IGF-1) reversed ARHGAP10 overexpression regulated EMT in NSCLC cells. Conclusion ARHGAP10 inhibits the epithelial–mesenchymal transition in NSCLC via PI3K/Akt/GSK3β signaling pathway, suggesting agonist of ARHGAP10 may be an optional remedy for NSCLC patients than traditional opioids.

scholarly journals Long Noncoding RNA FAL1 Promotes Cell Proliferation, Invasion and Epithelial-Mesenchymal Transition Through the PTEN/AKT Signaling Axis in Non-Small Cell Lung Cancer

2017 ◽  
Vol 43 (1) ◽  
pp. 339-352 ◽  
Author(s):  
Chunfeng Pan ◽  
Guoliang Yao ◽  
Bin Liu ◽  
Teng Ma ◽  
Yang Xia ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Cell Proliferation ◽  
Small Cell Lung Cancer ◽  
Cell Lung Cancer ◽  
Noncoding Rna ◽  
Biological Effects ◽  
Small Cell ◽  
Chromosome 1 ◽  
Small Cell Lung ◽  
Mesenchymal Transition

Background/Aims: Recently, long non-coding RNAs (lncRNAs) have been found to have many biological effects in different cancer stages. Several studies have revealed that focally amplified lncRNA on chromosome 1 (FAL1) regulates cancer progression via p21. However, the expression and mechanism of FAL1 in non-small cell lung cancer (NSCLC) still remain unclear. Methods: We detected the FAL1 level in NSCLC tissues and in established cell lines using quantitative real-time PCR and evaluated the clinical significance. FAL1 was silenced or overexpressed using siRNA or lentivirus to study whether FAL1 affected cell proliferation, invasion and migration. Xenograft growth and pulmonary metastasis were observed using nude mouse models. The mechanisms were explored with western blotting and immunohistochemistry. Results: FAL1 was significantly overexpressed in NSCLC compared with adjacent normal tissues, and a high level of FAL1 correlated with poor histological grade, increased lymph node metastasis and advanced TNM stage. Loss- and gain-of-function experiments in vitro verified that knockdown of FAL1 inhibited cell proliferation, invasion, migration and EMT via the PTEN/AKT pathway. Furthermore, an in vivo assay confirmed that overexpression of FAL1 facilitated tumor growth and metastasis. Conclusion: FAL1 may promote tumorigenesis and progression of NSCLC through the PTEN/AKT axis, which could lead to lncRNA-related diagnostics and therapeutics in NSCLC.

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