2006 Fiscal Year Final Research Report Summary
neural stem cell transplantation for the Parkinson's disease
| Project/Area Number |
15591525
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Cerebral neurosurgery
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| Research Institution | OKAYAMA UNIVERSITY |
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Principal Investigator |
SUGIU Kenji OKAYAMA UNIVERSITY, HOSPITALS, LECTURER, 医学部・歯学部附属病院, 講師 (40325105)
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| Co-Investigator(Kenkyū-buntansha) |
DATE Isao OKAYAMA UNIVERSITY, GRADUATE SCHOOL OF MEDICINE DENTISTRY AND PHARMACEUTICAL SCIENCES, PROFESSOR, 医学部・歯学部附属病院, 教授 (70236785)
TOKUNAGA Kouji OKAYAMA UNIVERSITY, HOSPITALS, LECTURER, 医学部・歯学部附属病院, 講師 (40294467)
MIYOSHI Yasuyuki OKAYAMA UNIVERSITY, GRADUATE SCHOOL OF MEDICINE DENTISTRY AND PHARMACEUTICAL SCIENCES, LECTURER, 大学院医歯薬学総合研究科, 講師 (00362997)
ONODA Keisuke OKAYAMA UNIVERSITY, GRADUATE SCHOOL OF MEDICINE DENTISTRY AND PHARMACEUTICAL SCIENCES, ASSISTANT, 大学院医歯薬学総合研究科, 助手 (20379837)
MATSUI Toshihiro OKAYAMA UNIVERSITY, GRADUATE SCHOOL OF MEDICINE DENTISTRY AND PHARMACEUTICAL SCIENCES, ASSISTANT, 大学院医歯薬学総合研究科, 助手 (80362995)
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| Project Period (FY) |
2003 – 2006
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| Keywords | adult / tyrosine hydroxylase / dopamine / GDNF / neurotrophic factor / microenvironment / CREB / differentiation |
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| Research Abstract |
For Parkinson's disease (PD) to realize intracerebral cell replacement therapy using neural stem cells, we hypothesized that autologous transplantation using neural stem cells (NSCs) is one of the safest and most useful therapies.
We showed the following:
First, neural stem cells were harvested from the subventricular zone of adult rodents or primates, were expanded to the transplantable number of cells in the presence of proliferating factors, and could be differentiated into a large number of dopaminergic neurons using tyrosine hydroxylase-inducing factor.
Second, transplantation of adult NSCs had the neuroprotective effects as the behavioral and histological improvements. The mechanism is that adult NSCs could secrete the various kinds of neurotrophic factors and cytokines (GDNF, EPO, CNTF etc), which had the effects surrounding to the transplanted striatum.
Third, We established the GDNF, which has a one of the most neurotrophic effect on the dopaminergic neurons, producing NSCs (NSC-G
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DNF) using GDNF gene transfection method. The transplantation of NSC-GDNF had a neuroprotective effect in the parkinsonian model animals as the behavioral and histological improvements. GDNF secreted from NSC-GDNF also had a strong surviving and migrating effect for the grafted cells and migrating. The mechanism is that NSC-GDNF transplantation may change the microenvironment into the lesioned striatum and the accommodated host glial cells may release the other trophic factors except for GDNF.
Finally, transplantation of dopaminergic (DA) neurons derived from adult NSCs has a restorative effect for the parkinsonian rat model. The survival of the grafted DA neurons derived from NSCs was poor in the lesioned striatum, but the great number of synapse formation between the grafted DA neurons and host neurons were observed. The mechanism is that upregulation of BDNF and phosphorylated CREB may enhance the synaptogenesis.
These results suggested that autologous transplantation of adult neural stem cells is useful in the treatment of PD. Less
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Research Products
(8 results)
