Regulation of onco and tumor suppressor MiRNAs by mTORC1 inhibitor PRP-1 in human chondrosarcoma

• Published in: Tumor biology Vol. 35; no. 3; pp. 2335 - 2341
• Main Authors: Galoian, Karina A., Guettouche, Toumy, Issac, Biju, Qureshi, Amir, Temple, H. T.
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Netherlands 01-03-2014; Springer Nature B.V
• Subjects: Biomarkers; Biomedical and Life Sciences; Biomedicine; Bone cancer; Bone Neoplasms - genetics; Bone Neoplasms - metabolism; Cancer Research; Cell Line, Tumor; Chondrosarcoma - genetics; Chondrosarcoma - metabolism; Gene Expression Regulation, Neoplastic - drug effects; Genes, Tumor Suppressor - drug effects; Humans; Inhibitor drugs; Mechanistic Target of Rapamycin Complex 1; Metastasis; MicroRNAs; MicroRNAs - biosynthesis; MicroRNAs - drug effects; Multiprotein Complexes - antagonists & inhibitors; Oncogenes - drug effects; Peptides - pharmacology; Proteins; Research Article; TOR Serine-Threonine Kinases - antagonists & inhibitors; Chondrosarcoma; mTORC1 inhibitor; MiRNA; PRP-1
• ISSN: 1010-4283; 1423-0380
• DOI: 10.1007/s13277-013-1309-7

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.