Regulation of onco and tumor suppressor MiRNAs by mTORC1 inhibitor PRP-1 in human chondrosarcoma
- 342 Downloads
Metastatic chondrosarcoma of mesenchymal origin is the second most common bone malignancy and does not respond either to chemotherapy or radiation; therefore, the search for new therapies is relevant and urgent. This study aimed to reveal the comparative analysis of miRNAs and their targets in human JJ012 chondrosarcoma cell line between control and experimental samples, treated with mTORC1 inhibitor, cytostatic antiproliferative proline-rich polypeptide (PRP-1). Examination of tumor-specific microRNA expression profiles has revealed widespread deregulation of these molecules in diverse cancers. It was reported that microRNAs can function as novel biomarkers for disease diagnostics and therapy, as well as a novel class of oncogenes and tumor suppressor genes. mTORC 1 inhibitor PRP-1 caused significant upregulation of tumor suppressors, such as miR20a, miR125b, and miR192; and downregulation of onco miRNAs, miR509-3p, miR589, miR490-3p, miR 550 in human chondrosarcoma JJ012 cell line.
KeywordsChondrosarcoma MiRNA mTORC1 inhibitor PRP-1
The study was financially supported by the University of Miami Tissue Bank research account. We would like to thank Yoslalyma Cardentey, Loida Navarro, and Kathy Slosek from the University of Miami Oncogenomics Core Facility for their help and expertise.
Conflicts of interest
- 1.Mirra J. Bone tumors. Philadelphia: Lea and Febiger; 1989.Google Scholar
- 34.Wang D, Qiu C, Zhang H, Wang J, Cui Q, Yin Y. Human microRNA oncogenes and tumor suppressors show significantly different biological patterns: from functions to targets. PLoS One. 2010; 5(9): pii: e13067. doi: 10.1371/journal.pone.0013067