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4 protocols using sc 514451

1

Protein Expression Analysis Protocol

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Total cell extracts were prepared in 1× sodium dodecyl sulfate- polyacrylamide gel electrophoresis (SDS-PAGE) sample loading buffer. Cell fractions were extracted with nuclear and cytoplasm protein extraction kit (Wanleibio, China). Cell proteins were resolved by SDS-PAGE, transferred to a polyvinylidene difluoride membrane, and probed with GAPDH (1:1000, BM3876, Bosterbio, USA), p-PERK, p-IRE1, ATF4, P16 (1:500, bs-3330R, bs-16698R, bs-1531R, bs-20656R, Bioss, China), H3, NRF2 (1:500, D153567, D121053, Sangon Biotech, China), and TNF-α, IL-6, P21, MT1, MT2, HRD1, VCP, P65, p-P65, IKK (1:200, sc-52746, sc-32296, sc-136020, sc-13180, sc-13177, sc-293484, sc-136273, sc-514451, sc-166748, sc-7606, Santa Cruz, USA). Secondary anti-rabbit, anti-mouse antibodies (1:1000, BM2004, BA1001, Bosterbio, USA) conjugated with horseradish peroxidase were used. Detection was performed using a Thermo Scientific Pierce enhanced chemiluminescence western blotting substrate (Thermo Scientific). Results were analyzed by Tanon-410 automatic gel imaging system (Shanghai Tianneng Corporation, China).
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2

MAP3K7 Signaling Pathway Analysis

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The cells were harvested in ice‐cold PBS, 48–72 h after transfection. Lysate samples were prepared by homogenizing the harvested HEK293Tcells in lysate buffer (10 mM Tris‐HCl 6.8, 2.5% SDS, 2 mM EDTA) containing protease inhibitor cocktail 2 (#P5726; Sigma) and 3 (#P0044; Sigma‐Aldrich) and protease inhibitor (#P8340; Sigma‐Aldrich). Protein concentrations were determined using the BCA kit (Pierce). Final working protein concentrations were adjusted to 1 mg/ml. Western blots were probed with primary antibodies against MAP3K7 (sc‐7967, 1:1000; Santa Cruz), phospho‐MAP3K7 (Thr187; #4536, 1:1000; Cell Signaling), extracellular signal‐regulated kinase (ERK)1/2 (#9102, 1:2000; Cell Signaling), phospho‐ERK1/2 (#9101, 1:2000; Cell Signaling), actin (MAB1501R, 1:20,000; Chemicon), RFP (#600401379, 1:2000; Rockland), nuclear factor‐κB (NFκB) (sc‐514451, 1:1000; Santa Cruz), phospho‐NFκB (sc‐136548, 1:1000, Santa Cruz), glyceraldehyde 3‐phosphate dehydrogenase (2118S, 1:2000; Cell Signaling), and TAB1 (67020‐1‐Ig, 1:10.000; Proteintech) and secondary antibodies (goat anti‐mouse [#926‐32210] and goat anti‐rabbit [#926‐68021], all 1:15,000, LI‐COR). Blots were quantified using LI‐COR Odyssey Scanner and Odyssey 3.0 software.
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3

Antibody-based protein detection protocol

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Antibodies against p-Akt (sc-7985-R), Akt (sc-1618), PI3K (sc-67306), NF-kB (sc-514451) were obtained from Santa Cruz Biotechnology (Santa Cruz, CA, U.S.A.). Antibodies specific for LC3 (ab51520), gasdermin D (GSDMD; ab210070), IL18 (ab191152), IL1b (ab9722) were purchased from Abcam (Cambridge, MA, U.S.A.). The actin antibody (ab-2768234) was produced by ABclonal (Wuhan, China). The dilution ratio for all primary antibodies was 1:2000. The secondary antibodies used in the present study were peroxidase AffiniPure goat anti-rabbit-IgG (H+L) (BF03008X) and goat anti-mouse-IgG (H+L) (BF03001X), which were obtained from Bio Dragon (Beijing, China). Secondary antibodies were used at 1:5000 dilution.
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4

SDS-PAGE and Western Blot Analysis

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Tissue proteins were separated on a 10% sodium dodecyl sulfate polyacrylamide gel and transferred to polyvinylidene difluoride (PVDF) membrane. Membranes were then probed with antibodies from Santa Cruz against nuclear factor-ĸβ (SC-514451), interleukin-6 (SC-57315), C reactive protein (SC-69770), and β-actin ((C4) sc-47778).
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