Journal
BRITISH MEDICAL BULLETIN
Volume 104, Issue 1, Pages 7-19Publisher
OXFORD UNIV PRESS
DOI: 10.1093/bmb/lds024
Keywords
neural stem cells; neurodegeneration; neuroprotection; transplantation; modulation; neurogenesis; anti-inflammatory; bystander effect; angiogenesis
Categories
Funding
- David R. Bloom Center for Pharmacy
- Dr Adolf and Klara Brettler Center for Research in Molecular Pharmacology and Therapeutics at The Hebrew University of Jerusalem, Israel
- Craig H. Neilsen Foundation
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Neural stem cells (NSCs) from specific brain areas or developed from progenitors of different sources are of therapeutic potential for neurodegenerative diseases. Treatment strategies involve the (i) transplantation of exogenous NSCs; (ii) pharmacological modulations of endogenous NSCs and (iii) modulation of endogenous NSCs via the transplantation of exogenous NSCs. There is a consensus about the therapeutic potential of transplanted NSCs. The ability of NSCs to home into areas of central nervous system injury allows their delivery by intravenous injection. There is also a general agreement about the neuroprotective mechanisms of NSCs involving a obystander effect'. Individual laboratories may be using phenotypically diverse NSCs, since these cells have been differentiated by a variety of neurotrophins and/or cultured on different ECM proteins, therefore differing in the expression of neuronal markers. Optimization of the dose, delivery route, timing of administration of NSCs, their interactions with the immune system and combination therapies in conjunction with tissue engineered neural prostheses are under investigation. In-depth understanding of the biological properties of NSCs, including mechanisms of therapy, safety, efficacy and elimination from the organism. These areas are central for further use in cell therapy. As long as critical safety and efficacy issues are not resolved, we need to be careful in translating NSC therapy from animal models to patients.
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