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

Karina A. Galoian, Toumy Guettouche, Biju Issac, Amir Qureshi, H. T. Temple

Research output: Contribution to journalArticlepeer-review

19 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)2335-2341
Number of pages7
JournalTumor Biology
Issue number3
StatePublished - Mar 2014


  • Chondrosarcoma
  • MiRNA
  • mTORC1 inhibitor
  • PRP-1

ASJC Scopus subject areas

  • Cancer Research


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