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4 protocols using af3293

1

Molecular Mechanisms of LPS-Induced Inflammation

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Reagents: ampicillin (A8180-2, Solarbio, China); colistin (R002831, Rhawn, China); neomycin and vancomycin (N814740 and V820413, Macklin, China); LPS (L8880, Solarbio, China); BAY-11-7082 (S1523, Beyotime, China); Stattic (A2224, APExBIO, USA); Docetaxel (A4394, APExBIO, USA); DMSO (D8370, Solarbio, China); PEG300 (IP9020, Solarbio, China); Tween-80 (T8360, Solarbio, China); DAPI (C0065, Solarbio, China); DAB (ZLI-9018, ZSGB-BIO, China).
Antibodies: Ki-67 (ab15580, abcam, UK); LPS (MAB526Ge22, Cloud-Clone, China); p65 (AF1234, Beyotime, China); p-p65 (Ser536) (AF2006, Affinity, USA); p-STAT3 (Tyr705) (AF3293, Affinity, USA); STAT3 (AF1492, Beyotime, China); Antibody-IL6 (AF-406-SP, R&D, USA); C-myc (AF0358, Affinity, USA); Cyclin D1 (AF0931, Affinity, USA); Bcl-2 (AF6285, Beyotime, China); Survivin (AF6017, Affinity, USA); β-actin (AF5003, Beyotime, China); β-tubulin (AF1216, Beyotime, China). Second antibodies: HRP-conjugated goat anti-rabbit IgG (cw0103s, CWBIO, China); HRP-conjugated goat anti-mouse IgG (cw0102s, CWBIO, China); fluorescent Cy3-conjugated goat anti-rabbit IgG (BA1032, BOSTER, China).
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2

Western Blot Analysis of Protein Expression

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Total protein lysates were extracted with cell lysis buffer (P0013, Beyotime) containing a protease inhibitor (ST506, Beyotime) and quantified with a BCA assay kit (P0011, Beyotime). Protein samples were loaded on SDS‒PAGE gels and transferred onto polyvinylidene difluoride membranes. After being blocked in 5% BSA for 1 h at room temperature, the membranes were hybridized with primary antibodies against JMJD1C (1:1000; A20153, ABclonal, Shanghai, China), HK2 (1:1000; A0994, ABclonal), PGK1 (1:1000; A12686, ABclonal), LDHA (1:1000; A0861, ABclonal), p-STAT3 (1:1000; AF3293, Affinity), STAT3 (1:1000; AF6294, Affinity), cyclin D1 (1:1000; A19038, ABclonal), CDK4 (1:1000; A11136, ABclonal) or β-actin (1:1000; sc-47778, Santa Cruz, Dallas, TX, USA) overnight at 4 °C, followed by goat anti-rabbit IgG (1:5000; A0208, Beyotime) or goat anti-mouse IgG (1:5000; A0216, Beyotime) secondary antibody incubation for 45 min at 37 °C. The protein signals were visualized by an enhanced chemiluminescence system (P0018, Beyotime) and quantified using Gel-Pro-Analyzer Software (WD-9413B, Beijing Liuyi Biotechnology Co., Ltd., Beijing, China).
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3

Ferroptosis Regulators and Cellular Signaling

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Bavachin was purchased from MCE (China), and pifithrin-α (PFT-α), deferoxamine (DFO), ferrostatin-1 (Fer-1), and liproxstatin-1 (Lip-1) were purchased from Topscience (China). Vitamin E was purchased from Beyotime (Shanghai, China). Rabbit polyclonal anti-transferrin receptor antibody (TFRC, AF5343, 1 : 1000), rabbit polyclonal anti-divalent metal transporter-1 antibody (DMT1, DF12740. 1 : 1000), rabbit polyclonal anti-ferritin light chain antibody (FTL, DF6604, 1 : 1000), rabbit polyclonal anti-ferritin heavy chain antibody (FTH, DF6278, 1 : 1000), rabbit polyclonal anti-SLC7A11 antibody (DF12509, 1 : 1000), rabbit polyclonal anti-P53 antibody (AF0879, 1 : 1000), rabbit polyclonal anti-STAT3 antibody (AF6294, 1 : 1000), rabbit polyclonal anti-p-STAT3 (705) antibody (AF3293, 1 : 1000), and rabbit polyclonal anti-glutathione peroxidase-4 antibody (GPX4, DF6701, 1 : 1000) were purchased from Affinity Bioscience (China). HRP goat anti-rabbit IgG was purchased from Earthox (USA).
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4

Cardiac TLR4, STAT3 Protein Analysis

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Toll-like receptor 4 (TLR4) (Affinity Biosciences Cat# AF7017, RRID: AB_2835322; Affinity Biosciences, Cincinnati, OH, USA), total signal transducer and activator of transcription 3 (T-STAT3) (Affinity Biosciences Cat# AF6294, RRID: AB_2835144) and its phosphorylated (Affinity Biosciences Cat# AF3293, RRID: AB_2810278) form in heart muscle were evaluated by Western blotting. Samples were homogenized in a lysis buffer, sonicated, and centrifuged. Protein concentration was determined using a bicinchoninic acid (BCA) protein quantitation assay. Protein (40 μg) were separated by 10% SDS-PAGE, transferred to polyvinylidene difluoride (PVDF) membranes, blocked with 5% bovine serum albumin (BSA) [in Tris-buffered saline with 0.1% Tween 20 (TBST)] for 2 h at room temperature and then incubated with primary antibodies overnight at 4°C. The membranes were then washed and incubated with secondary horseradish peroxidase-conjugated antibodies for 1 h at room temperature. After washing with TBST, bands were detected using the enhanced chemifluorescence reagent. The intra- and inter-assay variation was tested in GAPDH and β-actin, and western blotting efficiency of the two reference proteins were similar and constant. Band intensity was quantified by scanning densitometry using Image J software and normalized to GAPDH (Affinity Biosciences Cat# AF7021, RRID: AB_2839421).
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