Abstract
Long non-coding RNAs (lncRNAs) are emerging in molecular biology as crucial regulators of cancer. Although the aberrant expression of lncRNAs has been observed in osteosarcoma (OS), the molecular mechanisms underlying lncRNAs in doxorubicin resistance of OS still unknown. In the current study, we investigated a novel lncRNA, termed ODRUL (osteosarcoma doxorubicin-resistance related up-regulated lncRNA), and evaluated its role in the occurrence of doxorubicin resistance in OS. LncRNA microarray revealed that lncRNA ODRUL was the most up-regulated expressed in the doxorubicin-resistant OS cell line. Quantitative real-time PCR (qRT-PCR) confirmed that lncRNA ODRUL was higher in different doxorubicin-resistant OS cell lines and lower in different doxorubicin-sensitive OS cell lines. Moreover, we showed that lncRNA ODRUL was increased in specimens of OS patients with a poor chemoresponse and lung metastasis. We further demonstrated that lncRNA ODRUL inhibition could inhibit OS cell proliferation, migration, and partly reversed doxorubicin resistance in vitro. In addition, we found that the expression of classical drug resistance-related ATP-binding cassette, subfamily B, member 1 (ABCB1) gene was decreased after the lncRNA ODRUL knockdown. Thus, we concluded that lncRNA ODRUL may act as a pro-doxorubicin-resistant molecule through inducing the expression of the classical multidrug resistance-related ABCB1 gene in osteosarcoma cells .These findings may provide a novel target for reversing doxorubicin resistance in OS.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
