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2 protocols using anti nad p h dehydrogenase quinone 1 nqo1

1

Western Blot Analysis of Antioxidant Proteins

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Four hundred rat IEQs were lysed in RIPA buffer (Sigma-Aldrich, St. Louis, MO, USA) supplemented with protease inhibitor cocktails (Roche, Basel, Switzerland). Proteins were separated by SDS-10% PAGE (Biorad), transferred to nitrocellulose membranes and incubated overnight with the following primary antibodies: anti-superoxide dismutase 1 (SOD1) (1:2000), anti-NAD(P)H dehydrogenase (quinone 1) (NQO1) (1:1000), anti-heme oxygenase 1 (HO-1) (1:1000) and anti-ferritin H (FTH) (1:1000) (Abcam, Cambridge, UK). The signals were detected with horseradish peroxidase-conjugated secondary antibodies: goat anti-rabbit IgG (1:10,000) and goat anti-mouse IgG (Jackson ImmunoResearch, West Grove, PA, USA), and revealed with an enhanced chemiluminescence system (Thermo Fisher). Due to our experimental conditions mimicking inflammation, we were unable to find a stable protein as a loading control. To address this issue, blot signals were normalized with Ponceau S staining of each lane.
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2

Antibody Profiling for Oxidative Stress

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The primary antibodies used for western blot assay and immunohistochemical analysis were as follows:
anti-GAPDH (Proteintech, Wuhan, China); anti-Catalase (CAT), anti-SOD2 (Cell Signaling Technology, Danvers, MA, USA); anti-3-Nitrotyrosine (3-NT, Millipore); anti-NAD(P)H dehydrogenase quinone 1 (NQO-1), anti-Nrf2, anti-TXNIP, anti-NLRP3, anti-Caspase-1, anti-IL-18, anti-IL-1β, and anti-ASC (Abcam, Cambridge, UK). Horseradish peroxidase (HRP)-conjugated secondary antibodies used for western blot analysis were purchased from Proteintech (Wuhan, China). The SPlink Detection Kits used for immunohistochemical analysis were purchased from ZSGB-BIO Technology (Beijing, China).
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