期刊
NEUROCHEMICAL RESEARCH
卷 36, 期 12, 页码 2391-2400出版社
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s11064-011-0567-2
关键词
Cognitive function; Human umbilical mesenchymal stem cells; Neurotrophic factor; Transdifferentiation; Transplantation; Traumatic brain injury
资金
- Natural Science Foundation of China (NSFC) [U0632008, 30772232, 30801184]
- Foundation for Key Sci-Tech Research Projects of Guangdong [2008A030201019, 2007-05/06-70052]
Transdifferentiated and untransdifferentiated mesenchymal stem cells (MSCs) have shown therapeutic benefits in central nervous system (CNS) injury. However, it is unclear which would be more appropriate for transplantation. To address this question, we transplanted untransdifferentiated human umbilical mesenchymal stem cells (HUMSCs) and transdifferentiated HUMSCs (HUMSC-derived neurospheres, HUMSC-NSs) into a rat model of traumatic brain injury. Cognitive function, cell survival and differentiation, brain tissue morphology and neurotrophin expression were compared between groups. Significant improvements in cognitive function and brain tissue morphology were seen in the HUMSCs group compared with HUMSC-NSs group, which was accompanied by increased neurotrophin expression. Moreover, only few grafted cells survived in both the HUMSCs and HUMSC-NSs groups, with very few of the cells differentiating into neural-like cells. These findings indicate that HUMSCs are more appropriate for transplantation and their therapeutic benefits may be associated with neuroprotection rather than cell replacement.
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