Long-term health of dopaminergic neuron transplants in Parkinson's disease patients.

Long-term health of dopaminergic neuron transplants in Parkinson's disease patients.
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DOI:
10.1016/j.celrep.2014.05.027
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发表时间:
2014-06-26
期刊:
影响因子:
8.8
通讯作者:
Isacson O
Isacson O
中科院分区:
生物学1区
文献类型:
--
作者:
Hallett PJ;Cooper O;Sadi D;Robertson H;Mendez I;Isacson O

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为了确定帕金森病(PD)患者移植多巴胺神经元的长期健康和功能,我们检测了人胎儿中脑细胞移植中多巴胺转运体(DAT)的表达和线粒体形态。在移植后至少14年,DAT在再神经支配的宿主壳核和尾状核的移植多巴胺神经元末梢中得到了强有力的表达。移植后的多巴胺神经元在各时间点均表现出健康、无萎缩的形态。线粒体外膜蛋白Tom20和α -突触核蛋白的标记在患者自身黑质中显示出典型的细胞病理,而在移植的多巴胺神经元中没有观察到这种病理。这些结果表明,绝大多数移植的神经元在PD患者中长期保持健康,这与胎儿多巴胺神经元移植在临床上可维持患者长达15-18年的功能一致。这些发现对于以干细胞为基础的多巴胺神经元替代治疗PD的合理发展至关重要。
To determine the long-term health and function of transplanted dopamine neurons in Parkinson’s disease (PD) patients, the expression of dopamine transporters (DAT) and mitochondrial morphology was examined in human fetal midbrain cellular transplants. DAT was robustly expressed in transplanted dopamine neuron terminals in the reinnervated host putamen and caudate, for at least 14 years after transplantation. The transplanted dopamine neurons showed a healthy and non-atrophied morphology at all time points. Labeling of the mitochondrial outer membrane protein Tom20 and alpha-synuclein showed typical cellular pathology in the patients’ own substantia nigra, which was not observed in transplanted dopamine neurons. These results show that the vast majority of transplanted neurons remain healthy long-term in PD patients, consistent with the clinically maintained function of fetal dopamine neuron transplants for up to 15–18 years in patients. These findings are critically important for the rational development of stem cell-based dopamine neuronal replacement therapies for PD.
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