Abstract
We sought to extend our observation of LncRNA ADAMTS9-AS1 and to specifically uncover its role on the stemness of lung adenocarcinoma (LUAD) cancer cells. ADAMTS9-AS1 was poorly expressed in LUAD. The high ADAMTS9-AS1 expression was positively associated with overall survival. ADAMTS9-AS1 overexpression attenuated the colony-forming capacity and reduced stem cell-like population of LUAD cancer stem cells (CSCs). Furthermore, ADAMTS9-AS1 overexpression increased E-cadherin expression in addition to the downregulated expressions of Fibronectin and Vimentin in LUAD spheres. In vitro results also confirmed the ADAMTS9-AS1's inhibitory effect on the growth of LUAD cells. Moreover, the antagonistic repression of miR-5009-3p levels with the expression of ADAMTS9-AS1 and NPNT was confirmed. Finally, ADAMTS9-AS1 overexpression curbed the increasing stemness of LUDA-CSC caused by NPNT silencing, thus leading to the suppression of LUAD progression in vitro. Conclusively, ADAMTS9-AS1 negatively controls the LUAD cancer cell stemness progression through regulating miR-5009-3p/NPNT axis.
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