A proteomic analysis of the PHF-forming tau fragment (tau297-391) following uptake into differentiated human neuronal SHSY5Y cells
Copsey, A.; Oakley, S.; Maina, M. B.; Marshall, K. E.; Harrington, C.; Storey, J.; WISCHIK, C. M.; Serpell, L.
Show abstract
Tau self-assembly and intracellular deposition is associated with a group of neurodegenerative diseases called tauopathies, which include Alzheimers disease (AD) and Picks disease. Here, we measured the proteome response in human neuronal cells (differentiated SH-SY5Y) following addition of a spontaneously amyloidogenic region of tau known as dGAE (tau297-391) which forms AD-like paired helical filaments in vitro and proteomic analysis showed increased endogenous tau expression. Further interactome analysis uncovered increased association between tau and proteins associated with nuclear chromatin, the nucleolus, and the spliceosome as well as the thiol-peroxidase, PRDX6 alongside an increase in reactive oxygen species (ROS). This work highlights a method to identify proteome pathways that may play an important role in the development of tau pathology.
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