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Successful Function of Autologous iPSC-Derived Dopamine Neurons following Transplantation in a Non-Human Primate Model of Parkinson's Disease

机译:帕金森氏病非人类灵长类动物模型移植后自体iPSC衍生的多巴胺神经元的成功功能

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摘要

Autologous transplantation of patient-specific induced pluripotent stem cell (iPSC)-derived neurons is a potential clinical approach for treatment of neurological disease. Preclinical demonstration of long-term efficacy, feasibility, and safety of iPSC-derived dopamine neurons in non-human primate models will be an important step in clinical development of cell therapy. Here, we analyzed cynomolgus monkey (CM) iPSC-derived midbrain dopamine neurons for up to 2 years following autologous transplantation in a Parkinson's disease (PD) model. In one animal, with the most successful protocol, we found that unilateral engraftment of CM-iPSCs could provide a gradual onset of functional motor improvement contralateral to the side of dopamine neuron transplantation, and increased motor activity, without a need for immunosuppression. Postmortem analyses demonstrated robust survival of midbrain-like dopaminergic neurons and extensive outgrowth into the transplanted putamen. Our proof of concept findings support further development of autologous iPSC-derived cell transplantation for treatment of PD.
机译:患者特异性诱导多能干细胞(iPSC)衍生神经元的自体移植是治疗神经系统疾病的潜在临床方法。在非人灵长类动物模型中iPSC衍生的多巴胺神经元的长期疗效,可行性和安全性的临床前证明将是细胞疗法临床开发中的重要一步。在这里,我们分析了帕金森病(PD)模型自体移植后长达2年的食蟹猴(CM)iPSC衍生的中脑多巴胺神经元。在一只动物中,采用最成功的方案,我们发现单侧植入CM-iPSC可以在多巴胺神经元移植一侧对侧逐渐提供功能性运动改善,并增加运动活性,而无需进行免疫抑制。验尸分析表明,中脑样多巴胺能神经元的存活力强,并且广泛生长到已移植的壳核中。我们的概念验证结果支持自体iPSC衍生的细胞移植治疗PD的进一步发展。

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