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33 protocols using anti rabbit igg hrp

1

Western Blot Analysis of FcRn and β-Actin

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The Western blot was performed as described before [36 (link)]. Briefly, the cell and tissue lysates with equal weight or cell count were extracted by using ice-cold RIPA cell lysis (10 mM Tris-Cl, pH 8.0; 1 mM EDTA, 0.5 mM EGTA, 1% Triton X-100; 0.1% sodium deoxycholate, 0.1% SDS, 140 mM NaCl; protease inhibitor mix (Thermo Fisher Scientific, Dreieich, Germany) and ultrasound (Hielscher, Stuttgart, Germany)). Equal volumes of homogenized tissue were loaded, separated in a 12.5% SDS PAGE and blotted onto a nitrocellulose membrane (Carl Roth, Karlsruhe, Germany). The membrane was blocked with 5% skimmed milk powder (TSI GmbH, Zeven, Germany) in PBS-0.1% Tween20, pH 7.4 for 1 h at room temperature (RT). Primary antibodies against FcRn [14 (link)]; for human: Sigma Aldrich, Taufkirchen, Germany) and against β-Actin (Sigma Aldrich, Taufkirchen, Germany) were diluted 1:5000 in blocking buffer and incubated overnight at 4 °C. Secondary antibodies were diluted 1:5000 (Anti-human IgG-HRP, SouthernBiotech, Birmingham, AL, USA), 1: 50000 (Anti-rabbit IgG-HRP, Jackson Immuno Research, Ely, UK) and 1:4000 (Anti-murine IgG–HRP, Sigma Aldrich, Taufkirchen, Germany). For signal detection, the chemiluminescence substrate Immobilon® (Merck Millipore, Darmstadt, Germany) was used according to the manufacturer’s instructions.
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2

Western Blot Analysis of Protein Targets

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Proteins extracts were separated by SDS-PAGE and transferred onto a nitrocellulose membrane. The following primary antibodies were used: rabbit anti-Top2 (T. Hsieh and D. Ardnt-Jovin) (1:2000), rat anti-Vasa (DSHB) (1:200), mouse anti-actin (DSHB) (1:100), rat anti-HA 3F10 (Roche) (1:2000). The secondary antibodies were anti-mouse IgG HRP (Jackson Laboratories) (1:2000), anti-rabbit IgG HRP (Jackson Laboratories) (1:2000), and anti-rat IgG HRP (Jackson Laboratories) (1:2000).
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3

Co-immunoprecipitation and Western Blotting

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Co-immunoprecipitated fractions taken from solubilized cell lysate (L), unbound waste (U), bead wash (W), and final elution (E) were mixed with LDS gel loading buffer (Thermo-Fisher, #NP0007) containing 50mM fresh dithiothreitol and heated to 65°C for 5 minutes. Samples were then run on NuPage 4–12% Bis-Tris Protein Gels (Thermo-Fisher, #NP0322) according to manufacturer’s instructions. Samples were then transferred to Immobilon PVDF membranes for Western blotting (Sigma-Aldrich, #IPSN07852) according to manufacturer’s instructions. Protein-adhered membranes were blocked with TBS-T (50mM Tris, 150mM NaCl, 0.1% Tween 20) with 3% BSA for 1 hr followed by overnight incubation with primary antibodies to detect mVenus (Anti- GFP, rabbit, 1:1000 dilution, Novus Biologicals, #NB600–308) and FLAG (Anti-FLAG- M2, mouse, 1:1000, Sigma-Aldrich, F1804) at 4°C. The following day membranes were washed 4 × 15 min in TBST and probed for 1 hr with anti-rabbit IgG HRP (1:5000, Jackson ImmunoResearch, #711-035-152) for mVenus detection or anti-mouse IgG HRP (1:3000, Cell Signaling, #7076S) for FLAG detection. Blots were washed again 4× 15 min in TBST, mixed with Clarity Western ECL Substrate (BioRad, #1705061) and imaged on a ChemiDoc Touch Imaging System (BioRad, #1708370).
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4

Western Blotting of Mouse Sperm Proteins

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Whole sperm protein was extracted as previously described (66 (link), 67 (link), 68 ). In short, mouse epididymal spermatozoa (1 × 106 cells) washed in PBS were directly lysed in 20 μl 2× SDS sample buffer or 8 M urea. The whole sperm lysate was centrifuged at 15,000g, 4 °C for 10 min. Supernatant were adjusted to 50 mM DTT and denatured at 95 °C for 10 min before loading to a SDS-PAGE gel. The proteins were transferred on a nitrocellulose membrane. The membrane was incubated overnight at 4 °C with primary antibody, followed by washing with PBST and incubation with appropriate secondary antibody for 1 h. Bands were visualized using chemiluminescence and imaged by ChemiDoc (Bio-Rad). Primary antibodies used for Western blotting were rabbit anti-mouse TXNRD3 (1:2000), GPX4 (1:2000), ANT4 (1 μg/ml), P2X2 (1 μg/ml), TOM20 (0.2 μg/ml), TXNRD1 (1 μg/ml), TXNRD2 (1 μg/ml), and mouse anti-acetylated tubulin (1: 20,000). Secondary antibodies were anti-rabbit IgG-HRP (1:10,000) and anti-mouse IgG-HRP (1:10,000) from Jackson ImmunoResearch. Normalized expression was measured by ImageJ software (v1.53).
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5

Quantification and Immunoblotting Techniques

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Total protein lysate was quantified using a standard Bradford assay and 10 μg of lysate was used for immunoblotting experiments. For Blue Native PAGE, cells were lysed in 1x Sample Preparation buffer (ThermoFisher) containing 1% digitonin. 1% SDS was supplemented for SDS-PAGE. All proteins were transferred to PVDF membranes using TurboBlot (Bio-rad) at 2.5 mA for seven mins. The primary antibodies used were anti-FLAG (M2, Sigma-Aldrich Cat# F3165, RRID:AB_259529), anti-GAPDH (Santa Cruz Biotechnology Cat# sc-47724, RRID:AB_627678) and anti-HA (Y-11, Santa Cruz Biotechnology Cat# sc-805, RRID:AB_631618). The secondary antibodies were anti-rabbit IgG-HRP (Jackson ImmunoResearch Labs Cat# 111-035-003, RRID:AB_2313567), anti-mouse IgG-HRP (light chain specific) (Jackson ImmunoResearch Labs Cat# 205-032-176, RRID:AB_2339056) and anti-mouse IgG-HRP (Jackson ImmunoResearch Labs Cat# 115-035-003, RRID:AB_10015289).
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6

Immunoblotting of Shigella Isogenic Strains

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M90T WT, ipaB4, ipaB4 ΔipgC, and ipaB4 ΔmxiE isogenic strains harboring either one of plasmids pNS1-8 (Table S3) were inoculated in TSB supplemented with ampicillin (100 μg/mL) and incubated overnight at 37°C with shaking at 250 rpm. Next, the resulting cultures were diluted 1:1 in laemmli 2× and heated at 95°C for 5 min and ran into 4 to 15% polyacrylamide gradient SDS-PAGE gels (Bio-Rad, number 456-8086). Immunoblotting was performed as described in (13 (link)), using the following antibodies as indicated: primary antibodies: 1/5000 mouse anti-FLAG (Sigma. number F3165), 1/10000 rabbit anti-IpaH, and 1/1000 mouse anti-RecA (MBL, number ARM191); secondary antibodies: 1/25000 (except for RecA 1/10000) anti-Mouse IgG-HRP (Jackson Immunoresearch, number 115-035-003), and 1/10000 anti-Rabbit IgG-HRP (Jackson Immunoresearch, number 111-035-003).
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7

Comparative Analysis of HIF-1α and HIF-2α

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The expression of HIF-1α and HIF-2α was compared in non-pigmented and pigmented melanoma cells, with Caki cells as a positive control for HIF-2α [60 (link)], and Hif1a wild type (WT) and knockout (KO) mammary tumor epithelial cells (MTECs) derived from the polyoma virus middle T transgenic mouse (MMTV-PyMT) [61 (link)] as controls for HIF-1α. Cells were grown to 80% confluence and harvested after culture for 6 hours at either normoxia (ambient air; 5% CO2) or hypoxia (0.5% O2, 5% CO2). Cell extracts were prepared using a modified RIPA buffer to produce a whole cell extract (WCE) comprised of cytoplasmic and nuclear proteins. Insoluble material remaining after preparation of WCE was then re-extracted in high-salt (HS) (400 mM NaCl) buffer containing the deubiquitinase inhibitor N-ethylmaleimide (NEM, 0.5 μM) to enrich for nuclear proteins. HS-WCE was resolved on 3% to 8% Tris-acetate gels (10 μg/lane; Invitrogen) and transferred onto polyvinylidene fluoride (PVDF) membrane. Membranes were blocked in 5% milk prior to addition of anti-HIF1A (1:5,000, Novus Biologicals, NB100-479) or anti-HIF2A (1:2,000, Novus Biologicals, NB100-122) primary antibodies, which were incubated overnight at 4°C followed by incubation in anti-rabbit igG-HRP (Jackson Laboratories, 1;40,000) for 45 minutes and detection using enhanced chemiluminescence (ECL).
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8

Immunoblotting Technique for Protein Analysis

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For immunoblotting, cells were harvested and lysed in Triton X-100 lysis buffer [20 mM Tris-HCl pH 8.0, 1% Triton X-100, 10% Glycerol, 150 mM NaCl, protease inhibitor cocktail (Roche)]. Lysates were then loaded on a 10% SDS-PAGE followed by transfer on a polyvinylidene difluoride membranes (BioRad, Mississauga, ON, Canada). Membranes were blocked in 5% dry milk TBS-T (TBS, 0.1% Tween-20) for 2 h at room temperature. Primary antibodies against mouse IRAK1 and β-actin (Cell Signaling Technologies) were diluted in TBS-T and incubated with the membranes o/n at 4°C. Antirabbit IgG HRP (Jackson ImmunoResearch, West Grove, PA, USA) were used as secondary antibodies whereby they were diluted in TBS-T and incubated with the membranes for 1 h at room temperature. Detection was performed with ECL chemiluminescence kit (BioRad).
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9

EGFR Signaling Pathway Analysis

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Antibodies and reagents were purchased as follows: mAb-2E9 (Abcam ab8465, RRID: AB_2096462), Anti-EGFR Affibody® Molecule (Abcam ab95116; RRID: AB_11156238), Anti-EGFR (D38B1, Cell Signaling Technology (CST) 4267; RRID: AB_2246311), Anti-Phospho-Akt (Ser473, D9E, CST 4060; RRID: AB_2315049), Anti-beta-Actin Monoclonal Antibody, HRP Conjugated (13E5 CST 5125; RRID: AB_1903890), Anti-Phospho-EGF Receptor (Tyr1068, D7A5 CST 3777; RRID: AB_2096270), Anti-EGFR (R & D Systems, AF231; RRID: AB_355220), Anti-EGFR (phospho Y992, EM-12, Abcam ab81440; RRID: AB_1658463), Anti-mouse IgG-HRP (Jackson ImmunoResearch 715-035-150; RRID: AB_2340770), Anti-rabbit IgG-HRP (Jackson ImmunoResearch 711-035-152; RRID: AB_10015282), Anti goat IgG-HRP (Jackson ImmunoResearch 705-035-147; RRID: AB_2313587), Anti-Rabbit-HRP (Dako P044801, RRID: AB_2617138), Recombinant Murine EGF (Peprotech, 315-09), Recombinant Murine IL-3 (Peprotech, 213-13), Erlotinib Hydrochloride (Biovision, 1558-100), Lapatinib Ditosylate (Biovision, 1642-25), 4% Paraformaldehyde (EM Grade, Electron Microscopy Service (EMS), 157-4), 25% Glutaraldehyde (Grade I, Sigma G5882), FluoSpheres™ (carboxylate modified, 0.1 μm, infrared (715/755), Invitrogen F8799).
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10

Western Blot Analysis of Apoptosis Markers

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T cells with a >95% purity were purified using an EasySep mouse T cell enrichment kit (StemCell Technologies). T cell lysates were prepared in sample buffer (50 mM Tris-Cl [pH 6.8], 50mM 2-ME, 2% SDS, 0.2% bromophenol blue, and 10% glycerol). Antibodies used for Western blots were rabbit anti-LC3 (polyclonoal P014, MBL International), hamster anti-Bcl-2 (polyclonal, BD pharmingen), rabbit anti-Bcl-xL (polyclonal), rabbit anti-Mcl-1 (polyclonal, Rockland Immunochemicals), rabbit anti-Bim (polyclonal, Cell Signaling), rabbit anti-Bax (polyclonal, Cell Signaling), rabbit anti-Bak (polyclonal, Cell Signaling), rabbit anti-Bid (polyclonal, Abcam), rabbit anti-PARP-1 (polyclonal, Cell Signaling), rabbit anti-COX IV (polyclonal, Cell Signaling), mouse anti-cytochrome c (7H8.2C12, BioLegend), mouse anti-α-Tubulin (B-5-1-2, Sigma) and goat anti-β-Actin (polyclonal, Santa Cruz Biotechnology). For HRP-labeled western blot, the secondary antibodies were anti-rabbit IgG-HRP, anti-mouse IgG-HRP, anti-hamster IgG-HRP and anti-goat IgG-HRP (Jackson Immunoresearch). The development of the western blot was achieved with SuperSignal West Pico Chemiluminescent substrate (Thermo Scientific). For fluorescent western blot, the secondary antibodies were anti-rabbit IgG-Alexa Fluor 680, anti-mouse IgG-Alexa Fluor 680, and anti-goat IgG-Alexa Fluor 790 (Molecular Probes, Invitrogen).
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