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8 protocols using horseradish peroxidase conjugated goat anti mouse igg

1

Immunoblotting Analysis of PRRSV-N Protein

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MARC-145 cells seeded in six-well plates were infected with PRRSV. At 24 hpi, the cells were harvested with 1 × SDS loading buffer (Beyotime) and boiled for 10 min. After centrifuging at 12,000× g, 4 °C for 10 min, proteins were separated by electrophoresis on 12% polyacrylamide gels (EpiZyme Biotechnology, Shanghai, China) and electro-blotted onto polyvinylidene difluoride membranes (Millipore, MA, USA). Next, the membranes were blocked at room temperature with 5% BSA for 3 h and incubated with the antibody specific to PRRSV-N protein, followed by incubation with horseradish peroxidase-conjugated Goat Anti-Mouse IgG (Beyotime). Finally, the resultant images were visualized and collected using Clarity Western Peroxide Reagent (Bio-Rad, CA, USA).
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2

Western Blot Analysis of Protein Expression

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Cells were washed twice with PBS and lysed with 50 μl protein lysis buffer (Beyotime, Shanghai, China) containing 2% PMSF (Beyotime). After 30 min on ice, lysates were treated with 20% loading buffer (Beyotime) for 10 min at 100°C. Proteins were resolved by 15% SDS-PAGE and analyzed by immunoblotting using anti-Flag antibody (1:2000, Sigma, Burghausen, Germany) and anti-GP64 antibody (1:2000, Abcam, Cambridge, USA). The horseradish peroxidase-conjugated goat anti-mouse IgG (1:20000, Beyotime) was used as the secondary antibody. Protein bands were visualized using the Supersignal Western Femto Maximum Sensitivity Substrate Western Blotting Kit (Thermo, Waltham, MA, USA) and a Chemiluminescence Imaging System (Clinx Science Instruments, Shanghai, China).
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3

Western Blot Analysis of BmCYP18A1 Protein

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Proteins were extracted from the MSG and other tissues at indicated stages. Samples were homogenized, dissolved in PBS (phosphate-buffered saline) and quantified using BCA kit (Thermo). Extracted proteins were separated by 10% SDS/PAGE and transferred to the nitrocellulose membrane (GE Healthcare, Wisconsin, USA). The polyclonal mouse anti-BmCYP18A1 primary antibody recognizes the amino acids 524–541 of BmCYP18A1 and was used to detect BmCYP18A1 protein (1:200 dilution; ABmart Inc., Shanghai, China). And α-Tublin detected by the mouse anti-α-Tublin primary antibody (1:5000 dilution; Vazyme biotech co., ltd., Piscataway, USA) was used as the control. For the secondary antibody, horseradish peroxidase conjugated goat anti-mouse IgG (1:5000 dilution; Beyotime, Shanghai, China) was used. Signal detection was performed using the ECL Plus Western Blotting Detection Kit (GE Healthcare, USA).
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4

Western Blot Analysis of Apoptosis and EMT

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Protein samples were preprocessed with RIPA lysis buffer (Beijing Solarbio Science & Technology Co., Ltd.). The protein (30 µg/lane) was separated by 10% SDS-PAGE and transferred to PVDF membranes (EMD Millipore). The membranes were blocked with 10% non-fat milk in 1X TBS + 0.1% Tween-20 (TBST) for 2 h at room temperature. Subsequently, the membranes were incubated with primary antibodies against cleaved caspase-3 (1:1,000; ab2302), Bax (1:1,000; ab32503), Bcl-2 (1:1,000; ab32124), E-cadherin (1:50; ab1416), vimentin (1:1,000; ab92547), Snail (1:1,000; ab229701), AKT (1:10,000; ab179463), phosphor (p)-AKT (T308; 1:1,000; ab38449), mTOR (1:2,000; ab2732), p-mTOR (1:1,000; ab109268) and anti-GAPDH (1:10,000; ab181602) at 4°C overnight. All primary antibodies were obtained from Abcam. Subsequently, the membranes were washed three times with TBST and incubated with a horse-radish peroxidase-conjugated goat-anti-mouse IgG (1:1,000; A7007; Beyotime Institute of Biotechnology) for 1 h at room temperature. Specific protein bands were developed using an enhanced chemiluminescence reagent (Thermo Fisher Scientific, Inc.) and visualized using a ChemiDoc MP system (Bio-Rad Laboratories, Inc.).
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5

Western Blot Analysis Protocol

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Cells were washed three times with PBS and lysed in cell lysis buffer (Beyotime P0013). The cell lysate was mixed with 5× SDS loading buffer (Beyotime P0015), resolved with 12% acrylamide–SDS-PAGE buffer, and electroblotted onto polyvinylidene difluoride membranes. The membranes were blocked with 10% nonfat dry milk in Tris-buffered saline with 0.05% Tween 20 (TBST) for 1 h and incubated with the indicated antibodies at room temperature for 3 h. Following three washes with TBST, the membrane was incubated with horseradish peroxidase-conjugated goat anti-mouse IgG (Beyotime A0216) or goat anti-rabbit IgG (Beyotime A0208) at room temperature for 1 h. Signals were visualized using a ChemiDoc Touch imaging system from Bio-Rad and quantitated using ImageJ software.
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6

Western Blotting of Tagged Proteins

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Collected cell samples and silkworm samples were processed by lysate, and after SDS-PAGE, the proteins were transferred into PVDF membranes (Roche Diagnostics, Basel, Switzerland) and incubated with the primary antibody Flag (Beyotime, Suzhou, China), and the secondary antibody, horseradish peroxidase-conjugated goat anti-mouse IgG (Beyotime). The results of Western blotting were analyzed by a ECL Western blotting Detection System (Bio-Rad, Hercules, CA, USA).
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7

Western Blot Analysis of rSjVAMP2 Protein

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At 6 days post-siRNA treatment, soluble proteins were extracted from worms and quantified by using the Bradford protein assay (Sangon Biotech, Shanghai, China). Subsequently, the proteins were separated by SDS-PAGE, electrotransferred onto a PVDF membrane (Whatman International Ltd., Kent, UK), and blocked in 5% skim milk in PBS (pH 7.4) containing 0.1% Tween 20 (Sigma, St Louis, MO, USA) (PBST) overnight at 4 °C. The membrane was incubated with specific mouse anti-rSjVAMP2 serum43 (link) at a dilution of 1:100 or β-actin (Cell Signaling Technology, Boston, MA, USA) diluted 1:1000 in PBST for 1 h at room temperature. After three 5-min washes in PBST, the bound primary antibodies were detected using horseradish peroxidase-conjugated goat anti-mouse IgG (Beyotime Biotechnology, Shanghai, China) diluted 1:2000 for 1 h at room temperature. The membrane-bound proteins were exposed to an X-ray film and detected using the enhanced chemiluminescence detection system (GE Healthcare Life Sciences, Stockholm, Sweden).
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8

Stem Cell Factor and Cytokine Stimulation

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Recombinant human stem cell factor (SCF), IL-1β, IL-3, and IL-6 were purchased from Peprotech (Rocky Hill, NJ). Serum-free methylcellulose medium (SF H4236) was purchased from StemCell Technologies (Vancouver, Canada). Dulbecco's phosphate-buffered saline (PBS), Iscove's modi ed Dulbecco's medium (IMDM), RPMI-1640, fetal calf serum (FCS) and bovine serum albuminwere purchased from Gibco BRL (NY, USA). Rabbit anti-human E-cadherin,mouse anti-human vimentin monoclonal antibody (mAb) from Boster (Wuhan, China). Mouse anti-TGF-β1 mAb was from R&D Systems (Minneapolis, MN). Horseradish peroxidase-conjugated goat anti-rabbit IgG and horseradish peroxidase-conjugated goat anti-mouse IgG were purchased from Beyotime Biotechnology (Shanghai, China).
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