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HSP90-incorporating chaperome networks as biosensor for disease-related pathways in patient-specific midbrain dopamine neurons.

Nature communications | 2018

Environmental and genetic risk factors contribute to Parkinson's Disease (PD) pathogenesis and the associated midbrain dopamine (mDA) neuron loss. Here, we identify early PD pathogenic events by developing methodology that utilizes recent innovations in human pluripotent stem cells (hPSC) and chemical sensors of HSP90-incorporating chaperome networks. We show that events triggered by PD-related genetic or toxic stimuli alter the neuronal proteome, thereby altering the stress-specific chaperome networks, which produce changes detected by chemical sensors. Through this method we identify STAT3 and NF-κB signaling activation as examples of genetic stress, and phospho-tyrosine hydroxylase (TH) activation as an example of toxic stress-induced pathways in PD neurons. Importantly, pharmacological inhibition of the stress chaperome network reversed abnormal phospho-STAT3 signaling and phospho-TH-related dopamine levels and rescued PD neuron viability. The use of chemical sensors of chaperome networks on hPSC-derived lineages may present a general strategy to identify molecular events associated with neurodegenerative diseases.

Pubmed ID: 30341316 RIS Download

Associated grants

  • Agency: NIA NIH HHS, United States
    Id: R56 AG061869
  • Agency: NINDS NIH HHS, United States
    Id: R01 NS052671
  • Agency: NCI NIH HHS, United States
    Id: P50 CA192937
  • Agency: NICHD NIH HHS, United States
    Id: P01 HD067244
  • Agency: NIA NIH HHS, United States
    Id: U01 AG032969
  • Agency: NCI NIH HHS, United States
    Id: R01 CA172546
  • Agency: U.S. Department of Health & Human Services | NIH | National Cancer Institute (NCI), International
    Id: P30 CA08748
  • Agency: NCI NIH HHS, United States
    Id: P30 CA008748
  • Agency: NIA NIH HHS, United States
    Id: R21 AG028811
  • Agency: NCI NIH HHS, United States
    Id: P01 CA186866

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