scholarly journals LncRNA-MALAT1-mediated Axl promotes cell invasion and migration in human neuroblastoma

Tumor Biology ◽  
2017 ◽  
Vol 39 (5) ◽  
pp. 101042831769979 ◽  
Author(s):  
Shaojie Bi ◽  
Chunyan Wang ◽  
Yixin Li ◽  
Wei Zhang ◽  
Juan Zhang ◽  
...  

Overexpression of Axl has been noted to correlate with several human cancers. However, the regulatory mechanisms and effects of Axl in human neuroblastoma development remain unclear. Here, we explore the expression of Axl in neurobalstoma and related upstream regulatory mechanisms of invasion and migration. We found that Axl was overexpressed in metastatic neuroblastoma tissues and positively associated with long non-coding RNA metastasis-associated lung adenocarcinoma transcript 1. Meanwhile, our data suggested that metastasis-associated lung adenocarcinoma transcript 1 upregulated Axl expression in neuroblastoma cells, resulting in cell invasion and migration. Furthermore, we found that targeting Axl by inhibitor R428 significantly suppressed the abilities of tumor cell invasion and migration. In summary, these results suggested that Axl, which is regulated by long non-coding RNA metastasis-associated lung adenocarcinoma transcript 1, may exert great influence on invasion and migration of neuroblastoma.

2021 ◽  
Vol 19 (1) ◽  
Author(s):  
Qingjuan Meng ◽  
Ningning Wang ◽  
Guanglan Duan

Abstract Background X inactivation-specific transcript (XIST) is the long non-coding RNA (lncRNA) related to cancer, which is involved in the development and progression of various types of tumor. However, up to now, the exact role and molecular mechanism of XIST in the progression of ovarian cancer are not clear. We studied the function of XIST in ovarian cancer cells and clinical tumor specimens. Methods RT-qPCR was performed to detect the expression levels of miR-335 and BCL2L2 in ovarian cancer cells and tissues. MTT and transwell assays were carried out to detect cell proliferation, migration, and invasion abilities. Western blot was performed to analyze the expression level of BCL2L2. The interaction between miR-335 and XIST/BCL2L2 was confirmed using a luciferase reporter assay. Results The inhibition of XIST can inhibit the proliferation invasion and migration of human ovarian cancer cells. In addition, the miR-335/BCL2L2 axis was involved in the functions of XIST in ovarian cancer cells. These results suggested that XIST could regulate tumor proliferation and invasion and migration via modulating miR-335/BCL2L2. Conclusion XIST might be a carcinogenic lncRNA in ovarian cancer by regulating miR-335, and it can serve as a therapeutic target in human ovarian cancer.


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