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3 protocols using anti ezrin

1

Immunofluorescence Antibody Staining Protocol

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Regarding rabbit polyclonal primary antibodies, anti-pan-fimbrin was a generous gift from Paul Matsudaira (National University of Singapore),39 (link) and anti-human Tmod1 was prepared in our laboratory.30 (link) With respect to mouse monoclonal primary antibodies, anti-α-actinin (nonsarcomeric, Actn1) was from Sigma-Aldrich Corp. (A5044; St. Louis, MO, USA), anti-Arp3 was from BD Biosciences (612134; San Jose, CA, USA), anti-ezrin from Sigma-Aldrich Corp. (E8897), and anti-β2-spectrin from BD Biosciences (612563). Rat monoclonal primary antibody anti-N-cadherin was a generous gift from Dietmar Vestweber (Max-Planck-Institute for Molecular Biomedicine).40 (link) Secondary antibodies were Alexa-488–conjugated goat anti-rabbit (A11008; Thermo Fisher Scientific, Grand Island, NY, USA), Alexa-488–conjugated goat anti-mouse (115-545-166, minimal cross-reaction; Jackson ImmunoResearch, West Grove, PA, USA), Alexa-647–conjugated goat anti-rat (112-605-167, minimal cross-reaction; Jackson ImmunoResearch), and Alexa-647–conjugated goat anti-mouse IgG (A21236; Thermo Fisher Scientific). Rhodamine-phalloidin (R415, Thermo Fisher Scientific) was used to stain F-actin, and Hoechst 33258 (B2883; Sigma-Aldrich Corp.) stained nuclei.
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2

Synaptosome and Gliosome Protein Analysis

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Aliquots of total crude preparations (the supernatants collected before stratification on the Percoll gradient, containing both synaptosomes and gliosomes), obtained from both control and SMOX mice, were lysed in Laemmli’s sample buffer by sonication and heated for 5 min at 95 °C. Total proteins (25 μg/lane) were then separated by 8% SDS-PAGE, followed by Western blot. Nitrocellulose membrane was blocked by incubation for 1 h at room temperature with 5% skim milk powder in PBS, containing 0.05% Tween-20. Successively, the membrane was incubated for 16 h at 4 °C with one of the following primary antibodies: anti-vimentin (1:500, Sigma-Aldrich, Milano, Italy), anti-ezrin (1:2000, Sigma-Aldrich), or anti-β-actin (1:1000, Santa Cruz Biotech, Dallas, USA). Suitable peroxidase-conjugated secondary antibodies (1 h at 22 °C) were used. Immunoreactive signals were developed using ECL Select™ Western Blotting Detection Reagent, acquired and quantified using ChemiDoc™ XRS equipped with Quantity One Image Software 4.6.1 (Bio-Rad Laboratories Srl, Segrate, Italy). The membrane was stripped and re-probed.
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3

Protein Analysis of Cell and EV Lysates

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Lysis of cells and EVs was performed using the radioimmunoprecipitation assay (RIPA) buffer (89900, Thermo Fisher Scientific) supplemented with protease and phosphatase inhibitors (A32959, Thermo Fisher Scientific). An equal amount of proteins were run on SDS gels under denaturing conditions and blotted onto nitrocellulose membranes. The membranes were incubated overnight at 4 °C with the following primary antibodies: anti-CD99 (sc-53148; Santa Cruz Biotechnology, Dallas, TX, USA), anti-Ezrin (E8897; Sigma-Aldrich); anti-XAGE1A (A61802; Epigentek, Farmingdale, NY); anti-GAPDH (5174; Cell Signaling); anti-GPI (MA515396; Thermo Fisher Scientific), anti-IGFALS (sc-377131; Santa Cruz Biotechnology).
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