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20 protocols using anti rabbit igg hrp

1

Quantitative ApoA-I Immunoassay Protocol

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High binding plates were washed with Na2CO3 buffer 3 times and coated with 50 μL of a 1:1000 dilution of anti-ApoA-I in Na2CO3 buffer for 1 hour at 37 °C. Plates were washed 6 times with PBS-T and blocked with PBS containing 1% BSA and 0.1% Tween (PBS-B) for 1 hour at 37 °C prior to 2 washes with PBS-T. Samples were diluted 1:100,000 in PBS-B and 100 μL of diluted plasma was added to each well and incubated for 30 min at 37 °C. Following 6 washes with PBS-T, 100 μL of anti-ApoA-I (Millipore Sigma, 178422), diluted 1:2000 in PBS-B, was added and incubated for 30 min at 37 °C. After 6 washes with PBS-T, 100 μL of anti-rabbit IgG HRP (abcam, ab6721) diluted 1:20,000 in PBS-B was added and incubated for 30 min at 37 °C. The plates were then washed, developed with TMB, quenched with H2SO4 and the absorbance measured at 450 nm. Samples were analyzed in duplicate with a standard curve on each plate using purified human ApoA-I (Athens Research and Technology 16-16-120101).
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2

Inflammasome Activation and IL-1β Analysis

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BMDM were incubated with or without 1ug LPS for 4 hours followed by 1-hour incubation with or without 5mM ATP to activate the inflammasome. Secreted IL-1β was measured via ELISA (DuoSet ELISA kit, R&D, Abingdon, UK). Cells were lysed with RIPA +PI for 10mins on ice. 10μg of each lysate was then run on a 10%SDS-polyacrylamide gel and blotted on nitrocellulose membranes (GE Healthcare). The membranes were blocked in 4% milk/TBST, followed by probing with anti-murine IL-1β Ab 1:500(Cell Signaling Technology) overnight. Then the membrane was incubated with anti-rabbit IgG-HRP 1:1,000 (Abcam). The pro-IL-1β band was detected using Western Bright Quantum (Advansta) and imaged using Omega Lum C system (Aplegen).
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3

Protein Extraction and Western Blot Analysis

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After treatment, cells were washed twice with cold PBS and then pelleted, and then cell lysis reagent (Sigma-Aldrich) was added to the cell pellet for protein extraction. Protein concentration was determined by bovine serum albumin (BSA) assay using BSA as the reference, and the absorbance of the reacted product was measured at wavelength of 540–595 nm. Samples were boiled for 3 min before loading onto 12% sodium dodecyl sulfate (SDS)-polyacrylamide gel. After electrophoresis, the gels were electro blotted onto a polyvinylidene fluoride (PVDF) membranes (Merck Millipore, Whitehouse Station, NJ, USA). The antibodies used were as follows: anti-Bcl-2 rabbit polyclonal antibody (Abcam, Cambridge, MA, USA), anti-Bax rabbit polyclonal antibody (Abcam), anti-β-actin rabbit polyclonal antibody (Santa Cruz Biotechnology Inc., Dallas, TX, USA), and anti-rabbit IgG HRP (Abcam). The blot was visualized with an enhanced chemiluminescence (ECL) kit (Merck Millipore) and exposed to ECL Hyperfilm.
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4

Dual Immunohistochemical Staining of Mouse and Human Brain Tissues

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Mouse brain sections were incubated with anti-mouse transferrin (primary antibody; Bethyl) followed by anti-goat IgG-HRP (secondary antibody; Jackson Immuno Research Inc., West Grove, PA, USA). Human brain sections were incubated with anti-human transferrin antibody (DakoCytomation, Glosyrup, Denmark) followed by HRP-conjugated secondary antibody (ab205718, abcam). Signals were developed with ImmPACT DAB substrate (Vector Lab.). For double staining, DAB-stained slides were treated with quenching peroxidase and then with anti-NeuN antibody (abcam). The sections were further incubated with anti-rabbit IgG-HRP (abcam). Signals were developed with VECTOR VIP substrate (Vector Lab.).
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5

Immunoblotting Analysis of Transfected Cells

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For immunoblotting analysis, cells were transfected as for the reporter assays, but scaled twofold onto a 12 well, and replacing the Cas9/sgRNA plasmids with EV. Subsequently, cells were extracted using NETN buffer (20 mM Tris at pH 8.0, 100 mM NaCl, 1 mM EDTA, 0.5% Igepal, 1.25 mM DTT, Roche (Basel, Switzerland) protease inhibitor) with several freeze/thaw cycles. Extracts were probed with antibodies for mouse monoclonal anti-FLAG HRP (Sigma-Aldrich Cat#A8592), or rabbit polyclonal anti-ACTIN (Sigma-Aldrich (MiliporeSigma) Cat#A2066) with the secondary antibody goat polyclonal Anti-Rabbit IgG HRP (Abcam, Cambridge, U.K. Cat#ab205718). ECL western blotting substrate (ThermoFisher Cat#32106) was used to develop HRP signals.
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6

Metformin Modulates AMPK and Autophagy in Chondrocytes

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Chondrocytes (1 × 106 cell/well) were incubated with IL-1β 20 ng/mL (R&D Systems, MN, USA) and metformin 0.2, 1, and 5 mM (Sigma Aldrich) for 1 h. Proteins were separated by SDS-PAGE and transferred onto a nitrocellulose membrane (Amersham Pharmacia Biotech, Piscataway, NJ, USA). Western blotting was performed using a SNAP i.d. protein detection system (Millipore). The hybridized bands were detected using an enhanced chemiluminescence (ECL) detection kit (Thermo Fisher Scientific, MA. USA) and the following antibodies: anti-phospho-AMPK (1:1000 dilution), anti-AMPK (1:1000 dilution, Cat. No. #2535), anti-LC3B (1:2000 dilution, Cat. No. #2775), anti-p62 (1:400 dilution, Cat. No. #5114), anti-caspase-1 (1:1000 dilution, Cat. No. #2225), anti-caspase-3 (1:1000 dilution, Cat. No. #9662) (all from Cell Signaling Technologies), anti-GAPDH (1:2000 dilution, Cat. No. ab9485, Abcam), and anti-rabbit IgG-HRP (1:2000 dilution, Cat. No. sc2357, Santa Cruz Biotechnology, Dallas, Texas, USA). The Western blot bands were quantified using the Fiji/ImageJ program.
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7

Protein Expression Analysis in Cells

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Lysates of cells and tissues were measured using the Bradford assay. Equal amounts of protein were separated by SDS-PAGE and transferred to a PVDF membrane. The membranes were immunoblotted with the following specific antibodies: anti-Sb9 (PA5-51038, Invitrogen), anti-mouse GrB (16G6, #14-8822-82, Invitrogen), anti-cleaved caspase-3 (Asp175, #9661, CST), anti–GAPDH (Abcam), anti-rabbit IgG-HRP (Abcam), anti-rat IgG-HRP (Abcam), using standard protocols. The blots were developed with West Dura chemiluminescent substrates using a Bio-Rad ChemiDoc imaging system.
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8

Phosphorylation Dynamics in MOVAS Cells

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MOVAS-1 cell lysates from 1 h, 12 h, and 24 h old cultures (30 µg of protein) were separated on a 12% polyacrylamide gel under reducing conditions and transferred onto a nitrocellulose membrane (Hybond-ECL, Amersham, Mississauga, Ontario, Canada). The membrane was blocked with 5% non-fat milk in PBS and probed with either rabbit anti-phospho-ERK1/2 (1:1000, Abcam), rabbit anti-ERK1/2 (1:1000, Abcam), or rabbit anti-β actin (1:5000, ThermoFisher, Burlington, Ontario, Canada) antibodies in PBS, 5% non-fat milk, and 0.1% Tween 20 overnight at 4 °C. Anti-rabbit IgG-HRP (Abcam) was used as a secondary antibody and membranes were incubated for 1 h at room temperature. Finally, membranes were developed by chemiluminescence (Amersham).
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9

Bufalin-Induced Apoptosis and Stemness Regulation

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Bufalin was purchased from Sigma-Aldrich (St. Louis, MO, USA). The antibody against glyceraldehyde 3-phosphate dehydrogenase (GAPDH) was purchased from PeproTech (Rocky Hill, NJ, USA). The following antibodies were obtained from Cell Signaling Technology (Boston, MA, USA): β-actin rabbit mAb [horseradish peroxidase (HRP) conjugated], caspase 3, Bcl-2, Bcl-xL, caspase 9, and poly(ADP-ribose) polymerase (PARP). The antibodies against Bad and p-Bad were purchased from Santa Cruz Biotechnology (Santa Cruz, CA, USA). The antibodies against SOX2, Nanog, Oct4, and hTERT anti-mouse IgG-HRP and anti-rabbit IgG-HRP were purchased from Abcam (San Antonio, TX, USA). RNAiso Plus kits, PrimeScript Reverse Transcriptase kits, and SYBR Premix Ex Taq II kits were purchased from Takara (Tokyo, Japan). The hTERT and β-actin gene primers were synthesized by Sangon Biotech Co. Ltd. (Shanghai, P.R. China). Recombinant human epidermal growth factor (EGF; Invitrogen, Carlsbad, CA, USA), basic fibroblast growth factor (bFGF; EMD Millipore, Billerica, MA, USA), growth factor B-27 (Gibco, Grand Island, NY, USA), growth factor N2 (Gibco), and heparin (Selleck, Houston, TX, USA) were used for spheroid culture.
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10

Kidney Tissue Protein Expression Analysis

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The preparation of kidney tissue homogenates and western blot analysis of protein expression were performed using routine procedures as described previously22 (link). The following antibodies were used: rabbit anti-rat Wnt4 (1:200, Santa Cruz Biotechnology, USA), rabbit anti-rat β-catenin (1:5000, Abcam, UK), and anti-rabbit IgG HRP (1:5000; Abcam, UK). All of the western blot results were normalized to β-actin.
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