Major Points and Findings:
- Objective: The study aimed to explore the therapeutic potential of prenatal transplantation of mesenchymal stem cells (MSCs) in rat foetuses diagnosed with spina bifida aperta, a type of neural tube defect (NTD).
- Background: Neural tube defects (NTDs) are congenital malformations resulting from incomplete neurulation during embryonic development. Despite surgical interventions, many patients with NTDs face multiple system handicaps due to neuron deficiency in the defective spinal cord.
- Methodology: The researchers developed a prenatal surgical approach to transplant MSCs into the spinal column of foetal rats. These rats had NTDs induced by retinoic acid. The transplanted MSCs were observed for their survival, growth, and expression of markers associated with neurons, glia, and myoblasts in the defective spinal cord.
- Findings:
- The transplanted MSCs survived and grew in the defective spinal cord.
- These MSCs expressed markers of neurons, glia, and myoblasts.
- MSCs also expressed neurotrophic factors and might have induced the surrounding spinal tissue to express these factors.
- The transplantation of MSCs reduced apoptosis (cell death) in the spinal tissue of rats with NTDs.
- Conclusion: The results suggest that prenatal MSC transplantation could potentially treat spinal neuron deficiency in NTDs. This is achieved through the regeneration of neurons and a reduction in spinal neuron death in the defective spinal cord.