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High Throughput Characterization of Adult Stem Cells Engineered for Delivery of Therapeutic Factors for Neuroprotective Strategies
Published on: January 4, 2015
Delayed post-ischaemic neuroprotection following systemic neural stem cell transplantation involves multiple
Marco Bacigaluppi1, Stefano Pluchino, Luca Peruzzotti-Jametti
1Department of Neurology, University Hospital Zurich, Frauenklinikstrasse 26, CH-8091 Zurich, Switzerland.
Brain : a Journal of Neurology
|July 21, 2009
Summary
Delayed transplantation of neural stem/precursor cells (NPCs) significantly improved neurological recovery in stroke models. NPCs reduced inflammation and neuronal death, offering therapeutic potential beyond traditional windows.
Area of Science:
- Neuroscience
- Stem Cell Biology
- Regenerative Medicine
Background:
- Neural stem/precursor cells (NPCs) show promise in treating neurological disorders through indirect mechanisms.
- The precise therapeutic effects and optimal timing for NPC transplantation remain incompletely understood.
Purpose of the Study:
- To investigate the impact of delayed intravenous NPC transplantation on neurological recovery, histopathology, and gene expression following stroke.
- To explore the therapeutic potential of NPCs in a delayed treatment paradigm, extending beyond conventional therapeutic windows.
Main Methods:
- Adult syngenic NPCs were intravenously transplanted 72 hours after transient middle cerebral artery occlusion in mice.
- Neurological recovery was assessed, and brain tissue was analyzed for histopathology and gene expression at multiple time points post-transplantation.
- NPC integration and differentiation within the brain were evaluated.
Main Results:
- NPC transplantation led to significant and persistent neurological recovery starting 18 days post-transplantation.
- A small fraction of transplanted NPCs integrated into the infarct boundary zone, remaining largely undifferentiated.
- Histopathological analysis revealed a delayed neuroprotective effect, with reduced inflammation, glial scar formation, and neuronal apoptosis at mRNA and protein levels.
Conclusions:
- Delayed NPC transplantation can promote significant neurological recovery and neuroprotection in stroke models.
- NPCs counteract very delayed degenerative processes in the stroke brain, including inflammatory and glial responses.
- Stem cell-based strategies offer therapeutic potential for stroke treatment at time points significantly beyond established pharmacological windows.
