Long noncoding RNA SNHG12 mediates doxorubicin resistance of osteosarcoma via miR-320a/MCL1 axis

Publication date: October 2018Source: Biomedicine & Pharmacotherapy, Volume 106Author(s): Binghua Zhou, Lijun Li, Yajing Li, Huimin Sun, Changchun ZengAbstractThe long non-coding RNA small nucleolar RNA host gene 12 (SNHG12) overexpression was found in various tumors and the dysregulated expression of SNHG12 contributed to multidrug resistance in non-small cell lung cancer. However, the role of SNHG12 in doxorubicin resistance of osteosarcoma is still unclear. In present study, we explored the function and underlying mechanism of SNHG12 on doxorubicin resistance in osteosarcoma. High expression of SNHG12 was associated with doxorubicin resistance and a poor overall survival in osteosarcoma. Furthermore, doxorubicin-resistant cells revealed a higher expression of SNHG12 compared with doxorubicin-sensitive cells. Moreover, dual luciferase reporter and RNA immunoprecipitation assays revealed that miR-320a targeted to SNHG12. Besides, knockdown of SNHG12 contributed to the upregulation of miR-320a and improved the sensitivity of doxorubicin. Additionally, miR-320a inhibited the expression of Myeloid cell leukemia 1 (MCL1). Finally, the results indicated that SNHG12 mediated doxorubicin resistance of osteosarcoma via miR-320a/MCL1 axis.Graphical abstractSNHG12 regulated resistance to doxorubicin-mediating cell apoptosis in osteosarcoma via miR-320a/MCL1 axis.
Source: Biomedicine and Pharmacotherapy - Category: Drugs & Pharmacology Source Type: research