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4 protocols using odyssey blocker pbs

1

Western Blot Analysis of FANCD2

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HT1080 cells treated as indicated were washed twice with ice-cold PBS, collected in a centrifugation tube, and lysed on ice for 0.5 h with RIPA buffer supplemented with Halt Protease Inhibitor Cocktail and Halt Phosphatase Inhibitor Cocktail (Thermo Fisher Scientific, Waltham, MA). The protein concentration was determined by performing a BCA assay (Thermo Fisher Scientific) according to the manufacturer’s recommendation. Normalized amounts of samples were separated in NuPAGE 3–8% Tris-Acetate Gel (Thermo Fisher Scientific) and electrotransferred to a nitrocellulose membrane by using an iBlot apparatus (Thermo Fisher Scientific). The membrane was blocked with Odyssey Blocker (PBS) (Li-Cor, Lincoln, NE) and incubated with anti-FANCD2 antibody (Fl-17, sc-20022, Santa Cruz Biotechnology, Dallas, TX) at a dilution of 1:200 in the same blocking buffer at 4°C overnight, rinsed with TBS-0.05% (v/v) Tween 20 three times for 10 min each, incubated with goat anti-rabbit IRDye 800CW (Li-Cor, 10:000) at room temperature for 1 h, and then rinsed with TBS-0.05% Tween 20 three times for 10 min each. Protein bands were detected by fluorescence using an Odyssey Imager (Li-Cor).
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2

Western Blotting Immunodetection Procedure

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In all, 15 µg of protein was loaded into each well of an SDS-PAGE gel and transferred onto a PVDF membrane. Blots were blocked at room temperature for 1 hour in Odyssey Blocker PBS (Li-COR) + 2.5% BSA. Blots were incubated with primary antibody overnight at 4 °C and with secondary antibody (goat anti-mouse, Li-COR, 926-68020, 1:20,000 and/or goat anti-rabbit, Li-COR, 926-32211, 1:20,000) for 1 hour at room temperature. Li-COR Odyssey Clx imaging system was used to image blots. Image Studio Software version 5.2 (Li-COR) was used for blot analysis. Antibodies used for western blotting included mouse monoclonal anti-Lamin A/C (E1) (Santa Cruz Biotechnology, sc-376248, 1:1000), rabbit polyclonal anti-AFF1 (Bethyl, A-3020344A-T, 1:500), rabbit polyclonal anti-AFF4 (Abclonal, A4644, 1:1000), rabbit polyclonal anti-HEXIM1 (Bethyl, A303-112A-T, 1:1000), rabbit monoclonal anti-ATF-3 (E9J4N) (Cell Signaling, 18665, 1:1000), rabbit monoclonal anti-DUSP1 (E8L7D) (Cell Signaling, 48625, 1:1000), mouse monoclonal anti-RhoE (RND3) (Cell Signaling, 3664, 1:300), Rabbit anti-PhosphoThr186 CDK9 (Cell Signaling, 2549, 1:1000),  Rabbit anti-CDK9 (C12F7) (Cell Signaling, 2316, 1:1000), Rabbit anti-HA (C29F4) (Cell Signaling, 3724, 1:1000), Rabbit anti-DNMT1 (D63A6) (Cell Signaling, 5032, 1:1000), and Rabbit anti-MYC (D84C12) (Cell Signaling, 5605, 1:1000).
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3

Quantification of Nuclear Pore Proteins

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The protein concentration of keratinocyte lysate was measured by BioRad Bradford Protein Assay, and 10–15 ug µg of protein per sample was loaded for SDS-PAGE. The separated proteins were transferred onto a (polyvinylidene difluoride) PVDF membrane. After blocking using the Odyssey Blocker PBS (LI-COR) + 2.5% BSA for 1 h at the room temperature, primary antibodies were added to the PVDF membrane for overnight incubation at 4 °C. The primary antibodies used in this study include NUP205 (H1) (Santa Cruz sc-377047, 1:200), NUP93 (E-8) (Santa Cruz sc-374399, 1:200), NUP133 (Santa Cruz sc-376699, 1:200), lamin A/C (ThermoFisher MA5-35284, 1:1000; or Santa Cruz sc-376248, 1:1000). Secondary antibody (Goat anti-mouse LI-COR 96-68020, Goat anti-mouse LI-COR 96-32211) incubation was performed at room temperature for 1 h at 1:15000 dilution.
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4

Immunoblot Analysis of Chromatin Remodeling Proteins

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For immunoblot analysis, 10–30 μg of cell lysate was loaded per lane for SDS-page and then transferred to PVDF membranes. Blots were blocked with Odyssey Blocker PBS (Li-COR) + 2.5% BSA at room temperature for 1 h. Blots were then incubated with primary antibody at 4°C overnight and then with secondary antibodies (IRDye 680LT goat anti-mouse, LI-COR, 926–68020, 1:15,000, and/or IRDye 800CW goat anti-rabbit, LI-COR, 926–32211, 1:15,000) at room temperature for 1 h. The blots were imaged using Li-COR Odyssey CLx (LI-COR). Primary antibodies used for western blotting include anti-PBRM1 (Bethyl, A700-019), anti-PIAS1 (D33A7) (Cell Signaling, 3550), anti-ARID2 (D8D8U) (Cell Signaling, 82342), anti-BRG1 (G-7) (Santa Cruz Biotechnology, sc-17796), anti-ARID1A (PSG3) (Santa Cruz Biotechnology, sc-32761), anti-BRD7 (Bethyl, A302-304A-T), anti-HA (C29F4) (Cell Signaling, 3724), and anti-Lamin A/C (E−1) (Santa Cruz Biotechnology, sc-376248).
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