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Combined cell-based therapy strategies for the treatment of Parkinson's disease:focus on mesenchymal stromal cells

Neural Regeneration Research 2023年第3期18卷 478-484页

作者： jannette rodríguez-pallares María García-Garrote Juan A.Parga JoséLuis Labandeira-García Laboratory of Cellular and Molecular Neurobiology of Parkinson´s Disease Research Center for Molecular Medicine and Chronic Diseases(CiMUS)IDISDepartment of Morphological SciencesUniversity of Santiago de CompostelaSantiago de CompostelaSpain Networking Research Center on Neurodegenerative Diseases(CIBERNED) MadridSpain

Parkinson’s disease is a neurodegenerative condition characterized by motor impairments caused by the selective loss of dopaminergic neurons in the substantia nigra.Levodopa is an effective and well-tolerated dopamine replacement agent.However,levodopa provides only symptomatic improvements,without affecting the underlying pathology,and is associated with side effects after long-term use.Cell-based replacement is a promising strategy that offers the possibility to replace lost neurons in Parkinson’s disease treatment.Clinical studies of transplantation of human fetal ventral mesencephalic tissue have provided evidence that the grafted dopaminergic neurons can reinnervate the striatum,release dopamine,integrate into the host neural circuits,and improve motor functions.One of the limiting factors for cell therapy in Parkinson’s disease is the low survival rate of grafted dopaminergic cells.Different factors could cause cell death of dopaminergic neurons after grafting such as mechanical trauma,growth factor deprivation,hypoxia,and neuroinflammation.Neurotrophic factors play an essential role in the survival of grafted cells.However,direct,timely,and controllable delivery of neurotrophic factors into the brain faces important limitations.Different types of cells secrete neurotrophic factors constitutively and co-transplantation of these cells with dopaminergic neurons represents a feasible strategy to increase neuronal survival.In this review,we provide a general overview of the pioneering studies on cell transplantation developed in patients and animal models of Parkinson’s disease,with a focus on neurotrophic factor-secreting cells,with a particular interest in mesenchymal stromal cells;that co-implanted with dopaminergic neurons would serve as a strategy to increase cell survival and improve graft outcomes.

关键词： brain repair cell replacement co-grafts dopaminergic neurons fetal ventral mesencephalic tissue mesenchymal stem cells neural grafting neural transplantation neuroblasts neurotrophic factors

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