Abstract
The regenerative capacity of the olfactory system has generated interest in potential clinical application of cells from the olfactory epithelium in the treatment of neurodegenerative diseases. Experimental evidence from animal models and clinical studies suggest that transplantation of olfactory ensheathing cells (OEC), specialized glia in the olfactory system, may be therapeutically useful in neurodegenerative diseases such as spinal cord injury and stroke. This review article describes the different experimental approaches in OEC transplantation. We also discuss the possible effects of OEC implantation on the underlying pathophysiology in neurological disease, including neuroplasticity. Our recent study of this particular population of cells has disclosed some of the molecular basis of the regenerative mechanism of OECs. In summary OECs produce several neurotrophic factors such as stromal cell-derived factor 1α and brain-derived neurotrophic factor and enhance axonal regeneration to promote neuroplasticity in neurodegenerative diseases.
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Abbreviations
- BDNF:
-
Brain-derived neurotrophic factor
- CNS:
-
Central nervous system
- CNTF:
-
Ciliary neurotrophic factor
- GDNF:
-
Glial cell line-derived neurotrophic factor
- NGF:
-
Nerve growth factor
- OB:
-
Olfactory bulbs
- OE:
-
Olfactory epithelium
- OEC:
-
Olfactory ensheathing cell
- OM:
-
Olfactory mucosa
- OSN:
-
Olfactory sensory neuron
- PNS:
-
Peripheral nervous system
- RMS:
-
Rostral migratory stream
- SCI:
-
Spinal cord injury
- SVZ:
-
Subventricular zone
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Acknowledgments
We would like to thank Dr. Ted Weita Lai of University of British Columbia, Canada for his critical reading of this manuscript. This work was supported in part by research grants from the Chen-Han Foundation for Education, the National Science Council, Taiwan (NSC97-2314-B-039-036-MY3 and NSC97-2314-B-039-001-MY2), China Medical University, Taiwan (CMU 97-228), and China Medical University Hospital, Taiwan (DMR-97-143).
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The authors declare that they have no conflicting interests related to this study.
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Shao-Chih Chiu, Huey-Shan Hung, Shinn-Zong Lin, and Esheral Chiang contributed equally to this work.
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Chiu, SC., Hung, HS., Lin, SZ. et al. Therapeutic potential of olfactory ensheathing cells in neurodegenerative diseases. J Mol Med 87, 1179–1189 (2009). https://doi.org/10.1007/s00109-009-0528-2
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DOI: https://doi.org/10.1007/s00109-009-0528-2