PMID- 17269440 OWN - NLM STAT- MEDLINE DCOM- 20070618 LR - 20190608 IS - 0963-6897 (Print) IS - 0963-6897 (Linking) VI - 15 IP - 8-9 DP - 2006 TI - Transplantation of bioreactor-produced neural stem cells into the rodent brain. PG - 689-97 AB - The development of new cell replacement strategies using neural stem cells (NSC) may provide an alternative and unlimited cell source for clinical neural transplantation in neurodegenerative diseases such as Parkinson's and Huntington's disease. The clinical application of neural transplantation using NSC will therefore depend upon the availability of clinical grade NSC that are generated in unlimited quantities in a standardized manner. In order to investigate the utility of NSC in clinical neural transplantation, undifferentiated murine NSC were first expanded for an extended period of time in suspension bioreactors containing a serum-free medium. Following expansion in suspension bioreactors, NSC were still able to differentiate in vitro into both astrocytes and neurons after exposure to brain-derived neurotrophic factor (BDNF), suggesting that bioreactor expansion does not alter cell lineage potentiality. Undifferentiated bioreactor-expanded NSC were then transplanted into the rodent striatum. Immunohistochemical examination revealed undifferentiated bioreactor-expanded NSC survived transplantation for up to 8 weeks and expressed the astrocytic immunohistochemical marker glial fibrillary acidic protein (GFAP), suggesting that the host striatal environment influences NSC cell fate upon transplantation. Moreover, no tumor formation was observed within the graft site, indicating that NSC expanded in suspension bioreactors for an extended period of time are a safe source of tissue for transplantation. Future studies should focus on predifferentiating NSC towards specific neuronal phenotypes prior to transplantation in order to restore behavioral function in rodent models of neurodegenerative disease. FAU - McLeod, M AU - McLeod M AD - Cell Restoration Laboratory, Brain Repair Centre, Dalhousie University, Halifax, Nova Scotia, Canada. marcus_c_mcleod@hotmail.com FAU - Hong, M AU - Hong M FAU - Sen, A AU - Sen A FAU - Sadi, D AU - Sadi D FAU - Ulalia, R AU - Ulalia R FAU - Behie, L A AU - Behie LA FAU - Mendez, I AU - Mendez I LA - eng PT - Journal Article PL - United States TA - Cell Transplant JT - Cell transplantation JID - 9208854 RN - 0 (Glial Fibrillary Acidic Protein) RN - 0 (Ki-67 Antigen) SB - IM MH - Animals MH - *Bioreactors MH - Brain/*surgery MH - Cell Differentiation MH - Cell Line MH - Cell Survival MH - Female MH - Glial Fibrillary Acidic Protein/analysis MH - Immunohistochemistry MH - Ki-67 Antigen/analysis MH - Mice MH - Microscopy, Confocal MH - Neurons/chemistry/cytology/*transplantation MH - Rats MH - Rats, Wistar MH - Stem Cell Transplantation/*methods MH - Stem Cells/chemistry/cytology MH - Time Factors EDAT- 2007/02/03 09:00 MHDA- 2007/06/19 09:00 CRDT- 2007/02/03 09:00 PHST- 2007/02/03 09:00 [pubmed] PHST- 2007/06/19 09:00 [medline] PHST- 2007/02/03 09:00 [entrez] AID - 10.3727/000000006783464426 [doi] PST - ppublish SO - Cell Transplant. 2006;15(8-9):689-97. doi: 10.3727/000000006783464426.