Plasticity Comparison of Two Stem Cell Sources with Different Hox Gene Expression Profiles in Response to Cobalt Chloride Treatment during Chondrogenic Differentiation
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View abstract on PubMed
Summary
This summary is machine-generated.Dental pulp stem cells (DPSCs) show superior cartilage regeneration potential compared to bone marrow mesenchymal stromal cells (BMSCs). Preconditioning enhances DPSC chondrogenesis, suggesting DPSCs are promising for cartilage repair therapies.
Area Of Science
- Regenerative Medicine
- Stem Cell Biology
- Cartilage Tissue Engineering
Background
- Articular cartilage has limited self-repair capacity, posing challenges for injury healing.
- Mesenchymal stem/stromal cells (MSCs) are promising for tissue regeneration, but optimal cell source selection criteria are lacking.
- Hox gene expression patterns may differentiate MSCs with varying chondrogenic potential.
Purpose Of The Study
- To investigate the chondrogenic differentiation potential of dental pulp stem cells (DPSCs) versus bone marrow mesenchymal stromal cells (BMSCs).
- To evaluate the effect of hypoxia-mimicking preconditioning on MSC chondrogenesis.
- To propose a molecular criterion for selecting MSCs for cartilage regeneration.
Main Methods
- Dental pulp stem cells (DPSCs) and bone marrow mesenchymal stromal cells (BMSCs) were differentiated into chondrocytes using a two-step protocol in 3D pellets.
- Cells were preconditioned with cobalt chloride (CoCl2) to mimic hypoxic conditions.
- Chondrogenic differentiation efficiency was assessed via morphological, histochemical, immunohistochemical, and biochemical analyses.
Main Results
- Preconditioned DPSCs showed significantly increased collagen II and glycosaminoglycans (GAGs) and decreased collagen X levels.
- Preconditioning did not significantly affect GAGs in BMSCs but increased collagen II and collagen X.
- Alkaline phosphatase (ALP) activity was lower in differentiated DPSCs compared to BMSCs, irrespective of preconditioning.
Conclusions
- Dental pulp stem cells (DPSCs) exhibit higher plasticity and superior chondrogenic potential compared to bone marrow mesenchymal stromal cells (BMSCs).
- The negative Hox gene expression pattern in DPSCs may contribute to their enhanced chondrogenic differentiation.
- DPSCs represent a promising cell source for future cartilage regeneration therapies.
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