Expression of OCT-4 and SOX-2 in Bone Marrow-Derived Human Mesenchymal Stem Cells during Osteogenic Differentiation


  • Igor Matic Division of Biology, Department of Molecular Biology, Faculty of Science, University of Zagreb, Zagreb
  • Maja Antunovic Division of Biology, Department of Molecular Biology, Faculty of Science, University of Zagreb, Zagreb
  • Sime Brkic Division of Biology, Department of Molecular Biology, Faculty of Science, University of Zagreb, Zagreb
  • Pavle Josipovic Division of Biology, Department of Molecular Biology, Faculty of Science, University of Zagreb, Zagreb
  • Katarina Caput Mihalic Division of Biology, Department of Molecular Biology, Faculty of Science, University of Zagreb, Zagreb
  • Ivan Karlak Department of Traumatology, University Hospital Sestre Milosrdnice, Zagreb
  • Alan Ivkovic Clinical Hospital Sveti Duh, Zagreb
  • Inga Marijanovic Division of Biology, Department of Molecular Biology, Faculty of Science, University of Zagreb, Zagreb



pluripotency markers, human mesenchymal stem cells, osteodifferentiation


AIM: Determine the levels of expression of pluripotency genes OCT-4 and SOX-2 before and after osteogenic differentiation of human mesenchymal stem cells (hMSCs).

METHODS: Human MSCs were derived from the bone marrow and differentiated into osteoblasts. The analyses were performed on days 0 and 14 of the cell culture. In vitro differentiation was evaluated due to bone markers – alkaline phosphatase (AP) activity and the messenger RNA (mRNA) expression of AP and bone sialoprotein (BSP). The OCT-4 and SOX-2 expression was evaluated at mRNA level by real-time qPCR and at protein level by immunocytochemistry.

RESULTS: In vitro cultures on day 14 showed an increase in AP activity and upregulation of AP and BSP gene expression. OCT-4 and SOX-2 in undifferentiated hMSCs on day 0 is detectable and very low compared to tumor cell lines as a positive control. Immunocytochemistry detected OCT-4 in the cell nuclei prior (day 0) and post differentiation (day 14). On the same time points, cultures were negative for SOX-2 protein.

CONCLUSION: Messenger RNA for pluripotency markers OCT-4 and SOX-2 isolated from hMSCs was less present, while OCT-4 protein was detected in cell nuclei prior and post differentiation into osteoblast lineage.


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How to Cite

Matic I, Antunovic M, Brkic S, Josipovic P, Caput Mihalic K, Karlak I, Ivkovic A, Marijanovic I. Expression of OCT-4 and SOX-2 in Bone Marrow-Derived Human Mesenchymal Stem Cells during Osteogenic Differentiation. Open Access Maced J Med Sci [Internet]. 2016 Jan. 18 [cited 2021 Sep. 22];4(1):9-16. Available from:



A - Basic Science