Disease modifying therapies for Parkinson's disease (PD) remain a major unmet medical need despite numerous large-scale clinical trials. Among the reasons for these disappointing outcomes to date is the choice of proposed therapeutic targets that appear not to be critical for disease development or progression. But our current understanding about the molecular pathogenesis of PD has provided new therapeutic targets and the opportunity to develop disease-modifying therapies. Accumulating evidence from human genetics, cell biology and animal model studies suggest that ?-synuclein is a key protein in this disease as it misfolds, aggregates and forms fibrils that can propagate across neurons, explaining the progressive nature of the disease and the emergence of additional disturbing symptoms including dementia. A strong driver of its pathological aggregation is its concentration in the brain. Accordingly, reducing the expression of ?-synuclein has the potential to mitigate downstream cascades of pathologic events and slow down neurodegeneration. We propose to identify small molecules that downregulate the expression of ?-synuclein using a novel approach that we have developed. Our lead identification strategy, named Inforna, is designed to target RNA and impart biological activity. In this project, we will use Inforna to design small molecules that inhibit ?-synuclein production, followed by optimizing these molecules for further development.
Currently, there is no treatment for Parkinson's disease (PD) that can slow down the progressive loss of brain cells called neurons. The amount of certain proteins within neurons appears important for their health. Therefore, this project aims to design drug-like compounds that modulate the levels of a key protein and protect neurons from degeneration.
| Oh, Stephanie E; Park, Hye-Jin; He, Liqiang et al. (2018) The Parkinson's disease gene product DJ-1 modulates miR-221 to promote neuronal survival against oxidative stress. Redox Biol 19:62-73 |
| Oh, Stephanie E; Mouradian, M Maral (2018) Cytoprotective mechanisms of DJ-1 against oxidative stress through modulating ERK1/2 and ASK1 signal transduction. Redox Biol 14:211-217 |
| Park, Hye-Jin; Lee, Kang-Woo; Oh, Stephanie et al. (2018) Protein Phosphatase 2A and Its Methylation Modulating Enzymes LCMT-1 and PME-1 Are Dysregulated in Tauopathies of Progressive Supranuclear Palsy and Alzheimer Disease. J Neuropathol Exp Neurol 77:139-148 |
| Yan, Run; Zhang, Jie; Park, Hye-Jin et al. (2018) Synergistic neuroprotection by coffee components eicosanoyl-5-hydroxytryptamide and caffeine in models of Parkinson's disease and DLB. Proc Natl Acad Sci U S A 115:E12053-E12062 |
| Oh, Stephanie E; Mouradian, M Maral (2017) Regulation of Signal Transduction by DJ-1. Adv Exp Med Biol 1037:97-131 |
