Research Article

Trimeric Tau Is Toxic to Human Neuronal Cells at Low Nanomolar Concentrations

Figure 7

Comparison of rhTauinduced neurotoxicity toward nondifferentiated SH-SY5Y cells and retinoic-acid- (RA-) differentiated SH-SY5Y cells. The data combine toxicity results of 15.5 nM monomeric, dimeric, and trimeric forms of both 1N4R and 2N4R tau variants. (a) After 3 hours-incubation, RA-differentiated SH-SY5Y cells are more vulnerable to extracellular trimeric rhTau toxicity than nondifferentiated SHSY-5Y cells are ( ). (b) After 48-hours incubation, nondifferentiated SH-SY5Y cells are more vulnerable to extracellular trimeric rhTau toxicity than RA-differentiated SH-SY5Y cells ( ).
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(a)
260787.fig.007b
(b)