Journal
JOURNAL OF NEUROSCIENCE RESEARCH
Volume 99, Issue 7, Pages 1744-1762Publisher
WILEY
DOI: 10.1002/jnr.24845
Keywords
cell replacing therapy; embryonic stem cells; fetal neural tissue; genome editing; induced pluripotent stem cells; neural stem cells
Categories
Funding
- European Regional Development Fund (ERDF)
- Centro 2020 Regional Operational Programme [CENTRO-01-0145-FEDER-000012-HealthyAging2020]
- Fundacao para a Ciencia e a Tecnologia [POCI-01-0145-FEDER-029621, UIDB/04539/2020]
- COMPETE 2020 -Operational Programme for Competitiveness and Internationalisation
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Neurodegenerative movement disorders such as Huntington's disease exhibit progressive motor disability and neuropsychiatric impairment. Restorative therapies show promise in restoring brain circuits, but clinical trials have shown mixed results. Researchers are exploring cell replacement therapies and genetic interventions in animal models and patients with HD.
Neurodegenerative movement disorders, such as Huntington's disease (HD), share a progressive and relentless course with increasing motor disability, linked with neuropsychiatric impairment. These diseases exhibit diverse pathophysiological processes and are a topic of intense experimental and clinical research due to the lack of therapeutic options. Restorative therapies are promising approaches with the potential to restore brain circuits. However, there were less compelling results in the few clinical trials. In this review, we discuss cell replacement therapies applied to animal models and HD patients. We thoroughly describe the initial trials using fetal neural tissue transplantation and recent approaches based on alternative cell sources tested in several animal models. Stem cells were shown to generate the desired neuron phenotype and/or provide growth factors to the degenerating host cells. Besides, genetic approaches such as RNA interference and the CRISPR/Cas9 system have been studied in animal models and human-derived cells. New genetic manipulations have revealed the capability to control or counteract the effect of human gene mutations as described by the use of antisense oligonucleotides in a clinical trial. In HD, innovative strategies are at forefront of human testing and thus other brain genetic diseases may follow similar therapeutic strategies.
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