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6 protocols using ebio7979

1

Immune Markers in Tissue Samples

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The following antibodies were used: polyclonal rabbit antibody against human myeloperoxidase (MPO) (A0398, Dakocytomation, Glostrup, Denmark) and cluster of differentiation 3 (CD3 (A0452, Dakocytomation, Glostrup, Denmark), monoclonal rabbit antibody against human fork head box P3 (FoxP3) (clone eBio7979, 14-7979-82, eBioscience, San Diego, CA, USA), ovine interleukin-6 (IL-6) (MAB1004, Millipore, Darmstadt, Germany), and ovine IL-8 (MAB1044 Millipore, Darmstadt, Germany). Antibodies against intestinal fatty acid binding protein (I-FABP) were kindly provided by the Department of Surgery, Maastricht University Medical Centre, the Netherlands. Secondary antibodies were the following: biotin-conjugated rabbit antimouse (E0413, DakoCytomation, Glostrup, Denmark), swine antirabbit (E0353, DakoCytomation, Glostrup, Denmark), and peroxidase-conjugated goat antirabbit (111-035-045, Jackson, West Grove, PA, USA). Detection antibodies against IL-6 (AB1839, Millipore, Darmstadt, Germany) and IL-8 (AB1840, Millipore, Darmstadt, Germany) were used.
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2

Investigating Foxp3 Regulation by NLK

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The following antibodies were used: rat anti-Foxp3 clone PCH101 and mouse anti-Foxp3 clone eBio7979 (eBioscience), mouse anti-Flag (Sigma-Aldrich), mouse anti-hemaglutinin (HA) clone 12CAS, rabbit anti-NLK (H-100) and goat anti-Actin (I-19) (Santa Cruz Biotechnology), and anti-HSP90 was purchased from Professor Ineke Braakman (UMC Utrecht, Utrecht, the Netherlands).
The following reagents were used: Phos-tag™ Acrylamide (WAKO Chemicals GmbH), Okadaic acid, SB203580">SB203580, SP600125">SP600125, U-0126 and Rapamycin (Enzo Lifesciences), PKB inhibitor VIII (Calbiochem), 5Z-7-Oxozeaenol and BIO (Tocris Bioscience, Bristol, United Kingdom, λPPAse (New England BioLabs) and recombinant GST-NLK active protein (Sigma-Aldrich).
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3

Immunoblotting Analysis of Cell Signaling

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Cells were lysed in RIPA lysis buffer containing protease inhibitor cocktail and phosSTOP (Roche). Cell lysate was treated with 2 × Laemmli sample buffer (Bio-Rad) and denatured at 100°C for 10 min. Protein extracts were separated by 4–15% SDS-PAGE gel (Bio-Rad) and transferred to the PVDF membrane (Millipore) and analyzed by immuno-blotting with following antibodies: β-actin (I-19, Santa Cruz), CDK8 (P455, CST), pStat1-Y701 (58D6, CST), pStat1-S727 (D3B7, CST), pSmad2 linker (Ser245/250/255, CST), pSmad2 (Ser465/467)/Smad3 (Ser425/427) (D27F4, CST), and FoxP3 (eBio7979, eBioscience). Images of western blot were taken by Bio-Rad imaging system and had been cropped according to the molecular weight for presentation.
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4

Immunoblotting Analysis of Transcription Factors

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Sorted CD4+GFP, CD4+GFP+, or CD4+CD25 and CD4+CD25+ cells were lysed directly in SDS-loading buffer and resolved on 12% polyacrylamide gel (5×104 cells/lane) and electrotransferred onto a PVDF membrane (Millipore). Membranes were probed with antibody specific for Foxp3 (1 μg/ml, eBio7979, eBioscience) as described (27 (link)). For Smad2 and phospho-Smad2 detection membranes were probed overnight (4°C) with the corresponding antibodies (Cell Signaling Technology). Images were scanned and analyzed using ImageQuant 5.2 software (GE).
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5

FoxP3 Western Blot Analysis

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Western blots of FoxP3 were performed as described before27 (link); intensity of FoxP3 bands detected with anti-FoxP3 antibody (eBio7979, eBioscience) was analyzed using ImageJ 1.48 v (NIH) software and values are calculated relative to the corresponding intensity of heat shock protein 70 (HSP70) bands detected with anti-HSP70 antibody (1B5, Assay designs).
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6

FOXP3 Isoform Analysis by Western Blot

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Cells were lysed in 1% NP40 buffer. Protein lysates were loaded on an SDS gel electrophoresis (Bio-Rad) to analyze FOXP3 isoforms. Proteins were blotted on Immobilon P membranes (Millipore) using a Transblot (Bio-Rad) and detected with anti-FOXP3total (eBio7979, eBioscience). After incubation of the membrane with the HRP-coupled anti-mouse secondary antibody (Santa Cruz) and ECL Western Blot detection reagent (Amersham), chemoluminescence was detected on a ChemiDoc MP Imaging System (Bio-Rad).
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