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7 protocols using c myc n 262

1

Immunohistochemistry and Immunofluorescence Staining Protocol

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For immunohistochemistry and immunoflu-orescence staining, primary antibodies against the following proteins were used: Rabbit anti DsRed monoclonal (Clonetech), DsRed (L-18 Santa Cruz), CC10 (S-20 Santa Cruz), c-MYC (N-262 Santa Cruz), GATA-4 (C-20 Santacruz), PGP 9.5 (78-504 AbD Serotec), PCNA (555566 Becton Dickinson Co), pro SPC (Gift from J. Whitsett), Actin (I-19 Santacruz), Aquaporin 5 (Alomene Aqp-005),C-RAF (E 10) Santa Cruz), HA Tag (clone 3F10 Roche), Cleaved Caspase 3 (Cell Signaling).
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2

Chromatin Immunoprecipitation (ChIP) Assay Protocol

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Chromatin Immunoprecipitation (ChIP) assays were carried out as previously described [53 (link)]. Antibodies used for ChIP were BRCA1 (Ab4) from Calbiochem (Darmstadt, Germany) and c-Myc (N-262) from Santa Cruz Technology (CA, USA). ChIP primer sequences are listed in Supplementary Table S3.
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3

Western Blot Analysis of Ctbp2 and c-Myc

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Cells were washed in cold PBS and lysed in RIPA buffer (150mM NaCl, 50mM Tris HCL, pH 8.0, 1.7% NP-40, 0.17% sodium dodecyl sulfate (SDS), 0.5% Na-deoxycholate monohydrate, 5mM EDTA) containing 1 tablet of complete Mini Protease Inhibitor Cocktail /10ml (Roche). Lysates were cleared of insoluble material by centrifugation at 15,000 RPM. Proteins (30 μg) were loaded onto a Bis-Tris 4-12% gel containing NuPAGE MOPS buffer. Antibodies- Ctbp2 (Cat no. 612044, BD transduction); c-Myc (N-262; Cat no. sc-764, Santa Cruz).
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4

Western Blotting for Protein Analysis

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Western blotting was performed as follows:58 (link) CelLytic buffer (Sigma) supplemented with 1% protease inhibitor cocktail (Roche), 1% phosphatase inhibitor cocktail (Calbiochem Millipore), and 1 mM PMSF (Life Technologies) was used to lyse cells followed by loading the same amount of protein per sample on NuPAGE (Invitrogen) 4–12% Bis-Tris gradient gels and were further transferred on PVDF membranes (Invitrogen). Primary antibodies were used with the HRP immunodetection system (Life Technologies/Millipore). The following antibodies were used: Beta-actin (13E5; Cell Signaling Technology #4970, 1:10000), GNA13 (EPR5436; Abcam ab128900, 1:1000), BCL-6 (D65C10; Cell Signaling Technology #5650, 1:500), c-MYC (N-262; Santa Cruz sc-764, 1:500), and BCL-2 (7/Bcl-2; Becton Dickinson Biosciences 610539, 1:500). Uncropped western blots can be found in the Source Data file.
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5

Profiling Chromatin Modifications in T Helper Cells

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The ChIP assay was performed as previously published9 (link),49 (link),50 (link). Chromatin from primary polarized CD4+ TH1 cells maintained in variable IL-2 conditions was precipitated with antibodies to either Bcl-6 (C-19; Santa Cruz Biotechnology), c-Myc (N-262; Santa Cruz Biotechnology), HIF-1α (NB100-134; Novus Biologicals), or H3K9Ac (AB4441; Abcam). The purified DNA was analyzed by qPCR with the indicated primers. The experimental samples were first normalized to a standardized input DNA control then the IgG antibody control was subtracted to account for the nonspecific background, with this value graphically represented as the percent input of each sample.
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6

Profiling Chromatin Modifications in T Helper Cells

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The ChIP assay was performed as previously published9 (link),49 (link),50 (link). Chromatin from primary polarized CD4+ TH1 cells maintained in variable IL-2 conditions was precipitated with antibodies to either Bcl-6 (C-19; Santa Cruz Biotechnology), c-Myc (N-262; Santa Cruz Biotechnology), HIF-1α (NB100-134; Novus Biologicals), or H3K9Ac (AB4441; Abcam). The purified DNA was analyzed by qPCR with the indicated primers. The experimental samples were first normalized to a standardized input DNA control then the IgG antibody control was subtracted to account for the nonspecific background, with this value graphically represented as the percent input of each sample.
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7

Immunoblotting of Protein Expression Profiles

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Whole cell protein extracts were resolved on SDS-PAGE and proteins were transferred to nitrocellulose membranes. After blocking for 1 hour at room temperature in 5% milk in PBS/0.1% Tween-20, membranes were incubated overnight at 4℃ with the indicated primary antibodies: AR (441, 1:1000 dilution, Santa Cruz biotechnology, Inc.), AR (N-20, 1:1000 dilution, Santa Cruz biotechnology, Inc.), AR-V7 (AG10008, Mouse monoclonal antibody, 1:1000 dilution, precision antibody); AKR1C3 (A6229, 1:1000 dilution, Sigma-Aldrich, St. Louis, MO); c-Myc (N262, 1:1000 dilution, Santa Cruz biotechnology, Inc.); Tubulin (T5168, Monoclonal Anti-α-Tubulin antibody, 1:5000 dilution, Sigma-Aldrich, St. Louis, MO). Tubulin was used as loading control. Following secondary antibody incubation, immunoreactive proteins were visualized with an enhanced chemiluminescence detection system (Millipore, Billerica, MA).
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