Abstract

The accumulation of tau protein aggregates is a pathological hallmark in Alzheimer's disease (AD) and other neurodegenerative diseases. However, the identity of the toxic tau conformation that propagates and induces neurodegeneration is still unknown. Anti-tau antibodies are a common tool used to differentiate between normal and pathological-associated tau forms or as passive immunotherapy in the quest to interfere with tau-mediated neurodegeneration. Here, we show that Tau13, a tau N-terminal antibody, preferentially enriches high molecular weight tau species produced in a tauopathy mouse model and AD. The data suggest that Tau13 has higher affinity to specific tau conformation presence in higher molecular weight tau species.

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