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. 2020 Nov 3;24(6):341–348. doi: 10.1080/19768354.2020.1838607

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© 2020 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 2. — Bafilomycin A1 and botulinum toxin B reduce the surface expression level of N-methyl-D-aspartate (NMDA) receptors. (A and B) (Upper) Representative confocal images obtained from the live-cell imaging of HEK 293 T cells overexpressing SEP-GluN1 (A) or SEP-GluN2A (B) before and after bafilomycin A1 (Baf.A1, 2 μM) treatment. Scale bars, 10 μm. (Lower) Data represent the means ± SEM of the changes in SEP fluorescence intensity (ΔF/F₀). F₀, the average intensity of all time points prior to drug treatment; ΔF = F_t−F₀; F_t, the intensity at each time point. Gray bars, the period of Baf.A1 applied. Note the increases in SEP fluorescence during the early period following Baf.A1 treatment and the subsequent gradual reductions in fluorescence. (C and D) (Upper) Representative confocal images obtained from the live-cell imaging of HEK 293 T cells overexpressing SEP-GluN1 (C) or SEP-GluN2A (D) before and after botulinum toxin B (BotoxB, 8 μg/ml) treatment. Scale bars, 10 μm. (Lower) Data represent the means ± SEM of the changes in SEP fluorescence intensity (ΔF/F₀). Gray bars, the period of BotoxB applied. Note the gradual reductions in SEP fluorescence immediately after BotoxB treatment. (E) (Left) Representative confocal images obtained from the live-cell imaging of HEK 293 T cells overexpressing SEP-GluA2 before and after DMSO treatment. Scale bar, 10 μm. (Right) Data represent the means ± SEM of the changes in SEP fluorescence intensity (ΔF/F₀). Gray bar, the period of DMSO applied.