Parkinson's disease (PD) results from degeneration of midbrain dopamine (DA) neurons and can be effectively treated with L-dopa in the initial phase. However, DA supplementation does not halt the DA neuron degeneration process, nor does it correct the loss of DA neurons. Consequently, PD patients almost invariably lose responsiveness to L-dopa treatment over time. Transplantation of human fetal mesencephalic tissues to replace the lost DA neurons has shown efficacy in alleviating symptoms of some PD patients. This therapy, however, depends on collection of tissues from multiple fetuses of particular ages for a single patient, which makes it impractical for general application and is ethically problematic. This proposal explores the possibility of future personalized cell therapy for PD using a non-human primate model. We will derive safe and functional DA neurons from the skin tissue of individual Parkinsonian rhesus monkeys through generation of induced pluripotent stem cells (iPSCs) that are free of virus and transgenes and using our newly developed strategy for midbrain DA neuron differentiation. We will then label the cell genetically and transplant the midbrain DA neurons back to the monkey from which the cells are derived, and assess whether the DA neurons survive and contribute to therapy in a short term and whether the therapeutic outcome is sustained over a long term (2-3 years). Results from this study will determine the safety and efficacy of autologous stem cell therapy for PD in primates, thus setting up a foundation for future clinical trials using reprogrammed human cells.

Public Health Relevance

This study will derive dopamine nerve cells from monkey's skin tissue and transplant the nerve cells back to the Parkinson's monkey to determine if such autologous cell therapy will lead to long lasting improvement of movement deficits. This study mimics and sets up a foundation for future personalized therapy using reprogrammed human cells.

Agency
National Institute of Health (NIH)
Institute
National Institute of Neurological Disorders and Stroke (NINDS)
Type
Research Project (R01)
Project #
1R01NS076352-01A1
Application #
8372144
Study Section
Clinical Neuroplasticity and Neurotransmitters Study Section (CNNT)
Program Officer
Sutherland, Margaret L
Project Start
2012-06-01
Project End
2017-05-31
Budget Start
2012-06-01
Budget End
2013-05-31
Support Year
1
Fiscal Year
2012
Total Cost
$693,448
Indirect Cost
$232,685
Name
University of Wisconsin Madison
Department
Anatomy/Cell Biology
Type
Schools of Medicine
DUNS #
161202122
City
Madison
State
WI
Country
United States
Zip Code
53715
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