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12 protocols using peroxidase goat anti rabbit igg

1

Immunodetection and Visualization of TVMV

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Total protein extracts from plant samples were prepared and resolved by SDS-PAGE, as described (Pasin et al. 2020 (link)). Immuno-detection was conducted using a rabbit anti-TVMV coat protein serum (Domier et al. 1989 (link)) as the primary antibody, and a peroxidase goat anti-rabbit IgG (Jackson ImmunoResearch Laboratories) as the conjugate. Virion micrographs were obtained by immunosorbent electron microscopy as described (Valli et al. 2014 (link)). Briefly, plant extracts were prepared in 5 mM Tris-HCl (pH 7.5), 150 mM NaCl, 2.5 mM DTT, and incubated with collodion-coated carbon-stabilized copper grids precoated with the anti-TVMV CP serum. Grids were negative-stained with 2% uranyl acetate and observed in a transmission electron microscope (JEM 1011, Jeol); images were taken with the ES1000W Erlangshen CCD camera (Gatan). ImageJ (Schneider et al. 2012 (link)) was used for image processing.
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2

Western Blot and Immunofluorescence Analysis of IL-10RA

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Cells and whole tissue were extracted into Tris lysis buffer with protease inhibitor (Roche), disrupted by sonication, and quantified for normalization using Pierce BCA protein assay kit (Thermo Scientific). Antibodies were used at manufacturer recommended concentrations and included: anti-IL-10RA (rabbit polyclonal), anti-Cldn2 (rabbit polyclonal), and anti–β-actin from Abcam; IL-10 (human), anti-acH3K9 (C5B11, rabbit monoclonal), anti-Stat3 (79D7, rabbit monoclonal), and anti-pStat3 (Y705, rabbit polyclonal) from Cell Signaling; and anti-IL10RA (rabbit polyclonal) from ThermoFisher. The Western blotting antibodies, peroxidase Goat Anti-Rabbit IgG and peroxidase Goat Anti-Mouse IgG, were purchased from Jackson Laboratories. Western blotting substrates, Pierce ECL and SuperSignal West Femto, were purchased from ThermoFisher.
To localize IL-10RA, T84 cells were exposed to butyrate or buffer control, fixed and processed for microscopy as described (16 (link)). Cells were localized with anti-IL-10RA followed by AlexaFluor 488 secondary Ab and counter-stained with AlexaFluor 546 (Invitrogen). Fluorescence images were obtained using an AxioCam MRc5 attached to an AxioImager A1 microscope (Zeiss, Oberkochen, Germany).
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3

Immunohistochemical Analysis of Epigenetic Regulators

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Immunohistochemistry was performed on 5 μm thick paraffin-embedded EDTA-decalcified knee sections. Heat induced epitope retrieval was performed using a Citrate-EDTA buffer (pH 6.2) for 10 minutes at 95°C. Sections were treated with 3% H2O2/methanol for 10 minutes to inactivate endogenous peroxidase, blocked in goat serum for 30 minutes, and incubated overnight at 4°C with primary antibodies against DOT1L (Abcam, ab64077, 6 μg/ml) or HIF1A (Abcam, ab82832, 10 μg/ml) or for 90 minutes with primary antibody against H3K79me2 (Abcam, ab3594, 1 μg/ml). Rabbit IgG (Santa Cruz, sc-2027) was used as negative control. Avidin-biotin complex amplification (Vectastain ABC kit, Vector Laboratories) was used, except for the immunohistochemical detection of H3K79me2. Peroxidase goat anti-rabbit IgG (Jackson Immunoresearch) was applied for 30 minutes, and peroxidase activity was determined using DAB. Images were taken using an Olympus IX83 microscope. Quantification of the DAB staining was performed with a color deconvolution plugin (Jacqui Ross, Auckland University) in ImageJ Software (NIH Image). Quantification was performed using the average of 2 technical replicates for 5 different mice per condition, with staining intensity reported relative to the average of the 5 SHAM+Vehicle mice.
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4

Molecular Responses to tRNA/mir-34a and Doxorubicin in 143B Cells

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Human OS 143B cells were treated with 4 nM tRNA/mir-34a, 60 nM doxorubicin, or combination of 4 nM tRNA/mir-34a and 60 nM doxorubicin, or vehicle control. Cells were harvested at 72 h post-treatment with trypsin and washed twice with cold PBS. Cell lysates were prepared using RIPA buffer (Rockland Immunochemical Inc., Limerick, PA, USA) supplemented with the complete protease inhibitor cocktail (Roche, Nutley, NJ, USA), and protein concentrations were determined using a BCA Protein Assay Kit (Thermo Fisher Scientific Inc.). Whole cell proteins (40 μg/lane) were separated on a 10% SDS-PAGE gel and transferred onto PVDF membranes using a Trans-Blot Turbo Transfer System (Bio-Rad). Membranes were incubated with anti-SIRT1 (1:500 dilution; H-300; Santa Cruz Biotech Inc., Texas, TX), anti-c-MET (1:200; C-28; Santa Cruz), anti-CDK6 (1:1000; C-21; Santa Cruz), or anti-GAPDH (1:2,000; FL-335; Santa Cruz) rabbit polyclonal antibody, and then with a peroxidase goat anti-rabbit IgG (Jackson ImmunoResearch Inc., West Grove, PA). After incubated with Clarity Western ECL substrates (Bio-Rad), the proteins were visualized with the ChemiDoc MP Imaging System (Bio-Rad). Band density was determined by Image Lab software (Bio-Rad), and GAPDH was used as a loading control.
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5

Combinatorial Treatment Effects on c-MET and p-Erk1/2

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Human OS 143B-GFP-Luc cells were treated with doxorubicin (40 nM), sorafenib (4 μM) and miR-34a (12 nM) alone or in combination. Cells were collected at 72 h post-treatment and lysed in RIPA buffer containing protease inhibitor cocktail. Following determination of protein concentrations with a BCA Protein Assay Kit, protein samples (30 μg/lane) were loaded and separated on a 10% SDS-PAGE gel and transferred onto PVDF membranes. Membranes were incubated with anti-c-MET (1:200; C-28; Santa Cruz, Dallas, Texas), anti-p-Erk1/2 (1:1000; Thr202/Tyr204; Cell Signaling Technology), or anti-GAPDH (1:2,000; FL-335; Santa Cruz) rabbit antibody, and then with a peroxidase goat anti-rabbit IgG (Jackson ImmunoResearch Inc., West Grove, PA, USA). After incubation with Clarity Western ECL substrates (Bio-Rad, Hercules, CA, USA), the proteins were visualized with the ChemiDoc MP Imaging System (Bio-Rad) and quantified by Image Lab software (Bio-Rad). GAPDH was used as a loading control.
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6

ELISPOT Quantification of Antibody Secreting Cells

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Ninety-six-well PVDF membrane ELISPOT plates (Millipore) were coated with CPE, goat anti-mouse IgG (Sigma), or rat anti-mouse IgE (R35-72, BD Biosciences). To enumerate 1) IgG antibody secreting cells (ASCs), 0.5×105 cells per well were incubated for 4 hours at 37°C; and 2) IgE ASCs, 1×106 cells per well were incubated overnight for 18 hours at 37°C. The following Ab were incubated sequentially for one hour at 37°C: biotin goat-anti-mouse IgG (BioLegend) and avidin-peroxidase for IgG ASCs; or sheep anti-mouse IgE (The Binding Site Group, Ltd), rabbit anti-sheep IgG and peroxidase goat anti-rabbit IgG (both from Jackson ImmunoResearch Laboratories Inc.) for IgE ASCs. Spots were visualized using AEC substrate (BD Biosciences) and were subtracted from background wells (RPMI 10% FCS alone). C.T.L. ImmunoSpot Analyzer and Software 4 (Cellular Technology) were used to read and analyze plates.
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7

Western Blot Analysis of Protein Targets

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Cells were seeded in six-well plates and treated with 4 nM tRNA/mir-34a, tRNA/MSA or vehicle, as described above. 72 h post-transfection, cells were harvested with trypsin and washed twice with cold PBS. Cell lysates were prepared using RIPA buffer (Rockland Immunochemical Inc., Limerick, PA) supplemented with the complete protease inhibitor cocktail (Roche, Nutley, NJ). Protein concentrations were quantitated with a BCA Protein Assay Kit (Thermo Fisher Scientific Inc.). Whole cell proteins (40 μg/lane) were separated on a 10% SDS-PAGE gel and electro-transferred onto PVDF membranes using Trans-Blot Turbo Transfer System (Bio-Rad). Membranes were incubated with anti-SIRT1 (1:500 dilution; H-300; Santa Cruz Biotech Inc., Texas, TX), anti-c-MET (1:200; C-28; Santa Cruz), anti-BCL2 (1:200; N-19; Santa Cruz), anti-CDK6 (1:1000; C-21; Santa Cruz), or anti-GAPDH (1:2,000; FL-335; Santa Cruz) rabbit polyclonal antibody. The membranes were then blotted with a peroxidase goat anti-rabbit IgG (Jackson ImmunoResearch Inc., West Grove, PA), incubated with Clarity Western ECL substrates (Bio-Rad), and visualized with the ChemiDoc MP Imaging System (Bio-Rad).
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8

Immunodetection and Visualization of TVMV

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Total protein extracts from plant samples were prepared and resolved by SDS-PAGE, as described (Pasin et al. 2020 (link)). Immuno-detection was conducted using a rabbit anti-TVMV coat protein serum (Domier et al. 1989 (link)) as the primary antibody, and a peroxidase goat anti-rabbit IgG (Jackson ImmunoResearch Laboratories) as the conjugate. Virion micrographs were obtained by immunosorbent electron microscopy as described (Valli et al. 2014 (link)). Briefly, plant extracts were prepared in 5 mM Tris-HCl (pH 7.5), 150 mM NaCl, 2.5 mM DTT, and incubated with collodion-coated carbon-stabilized copper grids precoated with the anti-TVMV CP serum. Grids were negative-stained with 2% uranyl acetate and observed in a transmission electron microscope (JEM 1011, Jeol); images were taken with the ES1000W Erlangshen CCD camera (Gatan). ImageJ (Schneider et al. 2012 (link)) was used for image processing.
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9

Antibody Sourcing for Protein Analysis

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Antibodies (Abs) anti-P4D1 ubiquitin, -β2, -PSMD2, -p62 were purchased from Santa Cruz Biotechnology (CA). Abs anti-α6 and -PSMD3 were obtained from Invitrogen. Anti-β-actin Ab was from Abgent. Anti-annexin 5 Ab was from BD Science. Abs anti-β1, -RPN10 and -RPT4 were from Enzo Life Science. Anti-β5, -PSMA2, -LC3B, -ADRM1, -AMBRA1 and -HYOU1 were from Cell Signaling Technology (Danvers, MA, USA). Abs anti-mTOR and -S100A9 were from Sigma (St. Louis, MO, USA). Abs anti-UVRAG, -TOLLIP, -VPS33A, and -VTI1A were from Thermo Fisher Scientific (Waltham, MA, USA). Donkey anti-rabbit TexRed and donkey anti-mouse FITC secondary Abs were from Jackson Immunoresearch. Goat anti-mouse Star 635 was from Abberior and Donkey anti-Rabbit Alexa Fluor 594 was from Invitrogen. Fluorescent secondary Abs IRDye® 800CW and IRDye® 680RD were from LICOR. Peroxidase Goat Anti-Rabbit IgG and Peroxidase Rabbit Anti-Mouse IgG were from Jackson Immunoresearch.
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10

Immunofluorescence and Immunoblotting Assay

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Anti UNC-45A (Enzo Life Sciences), anti alpha-tubulin (Sigma), anti acetylated-alpha-tubulin (Santa Cruz Biotechnology), anti ɣ-tubulin (Sigma) anti MCAK (GeneTex). Peroxidase-linked anti-mouse Immunoglobulin G and peroxidase-linked anti-rabbit Immunoglobulin G were from Amersham. Texas Red-Goat anti-Mouse IgG, Texas Red-Goat anti-Rabbit IgG, FITC-Donkey and anti-Mouse IgG, Peroxidase-Goat anti-mouse IgG, Peroxidase–Goat anti-rabbit IgG were purchased from Jackson Immunoresearch Laboratories, Inc.
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