Stem Cell Reports (Oct 2017)

Scalable Production of iPSC-Derived Human Neurons to Identify Tau-Lowering Compounds by High-Content Screening

  • Chao Wang,
  • Michael E. Ward,
  • Robert Chen,
  • Kai Liu,
  • Tara E. Tracy,
  • Xu Chen,
  • Min Xie,
  • Peter Dongmin Sohn,
  • Connor Ludwig,
  • Anke Meyer-Franke,
  • Celeste M. Karch,
  • Sheng Ding,
  • Li Gan

DOI
https://doi.org/10.1016/j.stemcr.2017.08.019
Journal volume & issue
Vol. 9, no. 4
pp. 1221 – 1233

Abstract

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Lowering total tau levels is an attractive therapeutic strategy for Alzheimer's disease and other tauopathies. High-throughput screening in neurons derived from human induced pluripotent stem cells (iPSCs) is a powerful tool to identify tau-targeted therapeutics. However, such screens have been hampered by heterogeneous neuronal production, high cost and low yield, and multi-step differentiation procedures. We engineered an isogenic iPSC line that harbors an inducible neurogenin 2 transgene, a transcription factor that rapidly converts iPSCs to neurons, integrated at the AAVS1 locus. Using a simplified two-step protocol, we differentiated these iPSCs into cortical glutamatergic neurons with minimal well-to-well variability. We developed a robust high-content screening assay to identify tau-lowering compounds in LOPAC and identified adrenergic receptors agonists as a class of compounds that reduce endogenous human tau. These techniques enable the use of human neurons for high-throughput screening of drugs to treat neurodegenerative disease.

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