PE-TB disaggregates the
mature Tau fibrils. (A) SDS-PAGE analysis
of Tau aggregates treated with varying concentrations of PE-TB ranging
from 2 to 40 μM demonstrates a clear decrease in higher-order
aggregates. These results indicate the effective role of PDT against
higher-order aggregates. The red box indicates the disappearance of
higher-order aggregates on SDS-PAGE, which was apparent in the control
group. (B, C) Electron microscopy shows long, thick, matured fibrils
of Tau, whereas after incubating with PE-TB, Tau exhibits the population
of small, broken filaments. This indicated the potency of TB in disintegrating
Tau aggregates. (D) ThS fluorescence analysis of PE-TB-treated Tau
aggregates. In PDT-treated samples, the fluorescence intensity decreased
drastically. Here, 40 μM TB showed the maximum effect in disaggregating
the mature aggregates.