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Comparison of Two Representative Methods for Differentiation of Human Induced Pluripotent Stem Cells into Mesenchymal Stromal Cells
Published on: October 20, 2023
Schwann cell mediated trophic effects by differentiated mesenchymal stem cells
Daljeet Mahay1, Giorgio Terenghi, Susan G Shawcross
1Blond McIndoe Research Laboratories, Tissue Injury and Repair Group, The University of Manchester, 3.106 Stopford Building, Oxford Road, Manchester, M13 9PT, UK.
Experimental Cell Research
|July 1, 2008
Summary
Mesenchymal stem cells (MSCs) differentiated into Schwann cell-like cells promote peripheral nerve regeneration. These cells enhance neurite outgrowth by releasing key neurotrophic factors, offering a promising therapeutic strategy.
Area of Science:
- Neuroscience
- Stem Cell Biology
- Regenerative Medicine
Background:
- Peripheral nerve injuries often result in slow regeneration due to the limited capacity of native Schwann cells.
- Mesenchymal stem cells (MSCs) are multipotent stromal cells with immunomodulatory and regenerative potential.
- Developing functional substitutes for Schwann cells is crucial for improving peripheral nerve repair.
Purpose of the Study:
- To investigate the potential of differentiated rat bone marrow-derived mesenchymal stem cells (MSCs) as a substitute for Schwann cells in peripheral nerve regeneration.
- To evaluate the neurotrophic factor secretion and neurite outgrowth-promoting capabilities of differentiated MSCs.
- To elucidate the mechanisms underlying the observed effects, including the role of specific neurotrophic factors and their receptors.
Main Methods:
- Isolation and differentiation of rat bone marrow-derived MSCs.
- Co-culture of differentiated MSCs with dorsal root ganglia (DRG) neurons.
- Assessment of neurite outgrowth using microscopy.
- Quantification of neurotrophic factor secretion (BDNF, NGF) via ELISA.
- Evaluation of tyrosine kinase receptor involvement using the inhibitor K252a.
Main Results:
- Differentiated MSCs significantly enhanced neurite outgrowth from DRG neurons compared to undifferentiated MSCs.
- Differentiated MSCs stimulated longer and more branched neurites, mimicking Schwann cell behavior.
- Enzyme-linked immunosorbent assays revealed up-regulation of brain-derived neurotrophic factor (BDNF) and nerve growth factor (NGF) in differentiated MSCs.
- Inhibition of tyrosine kinase receptors with K252a abolished the neurite outgrowth, confirming the involvement of these signaling pathways.
Conclusions:
- Differentiated MSCs exhibit functional properties similar to Schwann cells, promoting peripheral nerve regeneration.
- The enhanced neurite outgrowth is mediated by the secretion of neurotrophic factors like BDNF and NGF.
- MSCs represent a viable cell source for developing advanced therapeutic strategies for peripheral nerve repair.
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