Functional characterization of human mesenchymal stem cells that maintain osteochondral fates

Journal of Cellular Biochemistry
Marina Romero-PradoJosefa P García-Ruiz

Abstract

Adult stem cells are essential for tissue renewal, regeneration and repair, and their expansion in defined culture medium is on focus for regenerative medicine and genetic pathologies. The bone marrow has been shown to be very rich is pluripotent mesenchymal stem cells (MSCs) capable of forming bone, cartilage and also may give rise, to neurons and astrocytes in vivo and in vitro. MSCs can be isolated and expanded in culture, but human cells cannot be verified for a cartilage or a bone fate by transfer experiments. Accordingly, here we used different approaches to characterize hMSCs osteoblastic differentiation in vitro. hMSCs grown in culture in the presence of fetal bovine serum (FBS) expressed the bone-specific transcription factor Runx2/AML3. When cells were incubated in osteoblastic differentiation medium, cells expressed transcripts belonging to the signaling of Indian HH-PTHrP axis, GLI transcription factors, and bone target genes including osteopontin. The HH pathway proved to be functional since it induced cells to grow. Cells growing or differentiating to osteoblasts presented the Runx2/AML3 transcription factor, its partner CBFB, and Smad2/3 at the nuclei associated with the nuclear matrix. Furthermore, Runx2/AML3 wa...Continue Reading

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Citations

May 26, 2012·The Journal of Physiological Sciences : JPS·Kannikar WongdeeNarattaphol Charoenphandhu
Dec 7, 2013·Biomedical Microdevices·M D YnsaJ P Garcia-Ruiz
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