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4 protocols using a27036

1

Immunofluorescence and Western Blot Protocols for JCPyV VP1 Antibody Characterization

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PAB597 is a hybridoma supernatant that produces a monoclonal antibody against JCPyV VP1 [61 (link)]. AF488 labeled goat anti-mouse 488 or anti-rabbit antibodies (Thermo/Invitrogen) were used as the secondary antibodies for immunofluorescence experiments. Transthyretin primary antibody (Dako, A0002) was used for initial characterization of CPE cells (1:250, overnight at 4C) followed by AF488 labeled goat anti-rabbit antibody (1:1,000). Primary antibodies and the respective dilutions used for Western blotting included annexin V (Abcam, ab117439, 1:1,000), CD9 (Cell Signaling Technologies, CST 13174S, 1:1,000), flotillin-1 (CST 18634S, 1:1,000), GM130 (Cell Signaling Technologies, CST 12480, 1:1,000), calnexin (Santa Cruz Biotechnology, TX; sc-11397, 1:200), cytochrome c (BD Pharmingen 556433, 1:500), TSG101 (Thermo PA5-31260, 1:500), and PAB597 (1:2,000). Secondary antibodies used for Western blotting anti-mouse horseradish peroxidase (HRP) (Thermo A28177) and anti-rabbit HRP (Thermo A27036), both used at 1:10,000.
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2

Dual Antibody Immunoblotting Procedure

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A27036, Thermo Fisher, dilution 1 : 2000 (WB), superclonal, goat/IgG, anti‐rabbit, HRP NXA931, Cytiva, dilution 1 : 2000 (WB), polyclonal, sheep/IgG, anti‐mouse, HRP.
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3

Western Blot Analysis of Protein Expression

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Cells were lysed directly in 1× Laemmli buffer, and proteins were separated through denaturing SDS-PAGE electrophoresis using Mini-Protean TGX precast gels (Bio-Rad) and transferred to PVDF membrane using the wet method (Bio-Rad). Membranes were blocked with 5% skim milk in TBS-1% Tween (TBST) for 1 h at RT and probed overnight at 4°C with primary antibodies in TBST and 5% BSA. The following antibodies were used: mouse anti-Srf (1/1,000; sc 13029; Santa Cruz Biotechnology), rabbit anti–pan actin (1/750; AAN01-A; Cytoskeleton), and mouse anti–α tubulin (1/4,000; T 6074; Sigma-Aldrich). After washing in TBST, membranes were hybridized with goat anti-mouse and goat anti-rabbit secondary antibodies coupled to HRP (1/10,000; 62-6520 and A27036; Thermo Fisher Scientific). Proteins were revealed using SuperSignal West Femto substrate (Thermo Fisher Scientific).
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4

Western Blot Analysis of Cellular Proteins

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After lysis using Pierce IP lysis buffer (Thermo Fisher), total protein concentration was measured with a BCA kit (Thermo Fisher). Then, the protein samples were resolved by sodium dodecyl sulfate polyacrylamide gel electrophoresis and transferred to PVDF membranes. After sealing in 5% skim milk, probing with the primary antibodies against PCNA (ab92552, 1:1000, Abcam), Bcl-2 (ab32124, 1:1000, Abcam), Bax (ab32503, 1:1000, Abcam), HK2 (ab209847, 1:1000, Abcam), FOXN3 (#711585, 1:100, Thermo Fisher), GAPDH (#5174, 1:1000, CST, USA) at 4°C overnight. Subsequently, a secondary antibody (#A27036, 1:4000, Thermo Fisher) was applied. The bands were acquired using the enhanced chemiluminescence (ECL) reagent (Thermo Fisher).
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