RT Journal Article T1 Generation of a human induced pluripotent stem cell-based model for tauopathies combining three microtubule-associated protein TAU mutations which displays several phenotypes linked to neurodegeneration. A1 García-León, Juan Antonio A1 Cabrera-Socorro, Alfredo A1 Eggermont, Kristel A1 Swijsen, Ann A1 Terryn, Joke A1 Fazal, Raheem A1 Nami, FatemehArefeh A1 Ordovás, Laura A1 Quiles, Ana A1 Lluis, Frederic A1 Serneels, Lutgarde A1 Wierda, Keimpe A1 Sierksma, Annerieke A1 Kreir, Mohamed A1 Pestana, Francisco A1 Van Damme, Philip A1 De Strooper, Bart A1 Thorrez, Lieven A1 Ebneth, Andreas A1 Verfaillie, Catherine M K1 Alzheimer's disease K1 CRISPR-Cas K1 Disease modeling K1 Drug screening K1 Frontotemporal dementia K1 Neurodegeneration K1 Parkinsonism linked to chromosome 17 K1 Progressive supranuclear palsy K1 Tauopathies AB Tauopathies are neurodegenerative diseases characterized by TAU protein-related pathology, including frontotemporal dementia and Alzheimer's disease among others. Mutant TAU animal models are available, but none of them faithfully recapitulates human pathology and are not suitable for drug screening. To create a new in vitro tauopathy model, we generated a footprint-free triple MAPT-mutant human induced pluripotent stem cell line (N279K, P301L, and E10+16 mutations) using clustered regularly interspaced short palindromic repeats-FokI and piggyBac transposase technology. Mutant neurons expressed pathogenic 4R and phosphorylated TAU, endogenously triggered TAU aggregation, and had increased electrophysiological activity. TAU-mutant cells presented deficiencies in neurite outgrowth, aberrant sequence of differentiation to cortical neurons, and a significant activation of stress response pathways. RNA sequencing confirmed stress activation, demonstrated a shift toward GABAergic identity, and an upregulation of neurodegenerative pathways. In summary, we generated a novel in vitro human induced pluripotent stem cell TAU-mutant model displaying neurodegenerative disease phenotypes that could be used for disease modeling and drug screening. YR 2018 FD 2018-07-20 LK http://hdl.handle.net/10668/12743 UL http://hdl.handle.net/10668/12743 LA en DS RISalud RD Apr 19, 2025