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7 protocols using ab64575

1

Western Blot for Protein Analysis

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The extracted protein was separated by 10% sodium dodecyl sulfate–polyacrylamide gel electrophoresis and then electro-transferred to the polyvinylidene fluoride membrane. After blocking with 5% interaction of bovine at room temperature for 2 h, the membrane was incubated with diluted primary antibody [JMJD6 (1:1000, ab64575, Abcam), LSD1 (1:1200, ab17721, Abcam), ERK2 (MAPK1) (1:1000, 9926, CST) and BRD4 (1:1500, ab75898, Abcam)] at 4 °C overnight. HRP-conjugated corresponding secondary antibody (goat anti-rabbit proteintech SA00001-1; goat anti-mouse proteintech SA00001-2) was added to incubate with membrane at room temperature for 1 h. Further, the membrane was exposed to enhanced chemiluminescence (EMD Millipore Corporation, Billerica, MA) and immunoblots were visualized and captured by Bio-Rad imaging system. Glyceraldehyde-3-phosphate dehydrogenase (GAPDH) (1:1000, ab181602, Abcam) was used as an internal reference, and the protein band image was analyzed by Image Lab software.
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2

BRD4 and JMJD6 Protein Interactions

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Protein was extracted from CHP134 cells and co-immunoprecipitation was carried out using a rabbit anti-BRD4 antibody (Bethyl Laboratories, Montgomery, TX), rabbit anti-JMJD6 antibody (Abcam ab135066) or control IgG as a negative control, followed by immunoblot analysis with anti-BRD4 and anti-JMJD6 antibodies. Protein co-immunoprecipitation was also carried out with an anti-N-Myc antibody (Santa Cruz Biotechnology B8.4.b) or control IgG as a negative control, followed by immunoblot analysis with the anti-JMJD6 (Abcam Ab64575) and an anti-N-Myc antibodies.
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3

Immunohistochemical Analysis of JMJD6 in Gliomas

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Briefly, deidentified tissue microarrays (TMAs) were constructed from gliomas after obtaining University of Kentucky Institutional Review Board Approval. Three 2-mm diameter cores per tumour were obtained, with each core embedded in a separate TMA block. A total of 104 cases comprised the TMAs, including 9 nonneoplastic controls (cortical dysplasias), 9 grade II astrocytomas, 11 grade III astrocytomas, 12 anaplastic oligodendrogliomas, 16 grade II oligodendrogliomas, and 47 grade IV glioblastomas (GBMs). Immunohistochemistry was performed for each core as described previously37 (link), but using an antibody towards JMJD6 (Abcam, ab64575). Briefly, each core was semiquantified on a relative scale from 0 to 3, with 0 = negative and 3 = strongest. Results from all 3 cores were averaged together to produce a final score for a tumour. Results were plotted based on WHO grade and differences were calculated via Mann-Whitney-Wilcoxon Test.
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4

Immunohistochemical Analysis of JMJD6 in Gliomas

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Briefly, deidentified tissue microarrays (TMAs) were constructed from gliomas after obtaining University of Kentucky Institutional Review Board Approval. Three 2-mm diameter cores per tumour were obtained, with each core embedded in a separate TMA block. A total of 104 cases comprised the TMAs, including 9 nonneoplastic controls (cortical dysplasias), 9 grade II astrocytomas, 11 grade III astrocytomas, 12 anaplastic oligodendrogliomas, 16 grade II oligodendrogliomas, and 47 grade IV glioblastomas (GBMs). Immunohistochemistry was performed for each core as described previously37 (link), but using an antibody towards JMJD6 (Abcam, ab64575). Briefly, each core was semiquantified on a relative scale from 0 to 3, with 0 = negative and 3 = strongest. Results from all 3 cores were averaged together to produce a final score for a tumour. Results were plotted based on WHO grade and differences were calculated via Mann-Whitney-Wilcoxon Test.
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5

Antibody Panel for IF and WB

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Primary antibodies employed in IF and WB include mouse monoclonal anti-β-actin (ACTB) (sc-477778, 1:1,000, Santa Cruz), mouse monoclonal anti-integrin α5β1 (MAB1999, 1:200, Millipore Sigma), mouse monoclonal anti-α-tubulin (sc-8035, 1:1,000, Santa Cruz), mouse monoclonal anti-Calreticulin (CALR) (ab22683, 1:300, Santa Cruz Biotechnology), mouse monoclonal anti-CK7 (sc-70936, 1:200, Santa Cruz), rabbit polyclonal anti-collagen IV (COL IV) (ab19808, 1:200, Abcam), mouse monoclonal anti-Fibronectin (sc-8422, 1:1,000, Santa Cruz Biotechnology), rabbit polyclonal anti-Fibronectin (ab2413, 1:2,000, Abcam), mouse monoclonal anti-HLAG (ab52454, 1:200, Abcam), mouse monoclonal anti-JMJD6 (sc-28348, 1:500, Santa Cruz), rabbit polyclonal anti-JMJD6 (ab64575, 1:1,000, Abcam), rabbit monoclonal anti-Syntaxin 6 (CB4B2 #2869. 1:50, Cell Signaling Technology), and rabbit polyclonal anti-Vimentin (sc-5565, 1:200, Santa Cruz). HRP-conjugated secondary antibodies were obtained from Santa Cruz Biotechnology and used at a concentration of 1:2,000. WBs were scanned using a CanoScanLiDE20 image scanner (Canon Canada Inc. Mississauga, ON) and analyzed for densitometry.
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6

Western Blot Analysis of Protein Expression

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For Western blot assay, cells were harvested, washed with PBS, boiled for 10 minutes in lysis buffer (125 mmol/L Tris HCl pH 6.8, 5% of SDS) and supplemented with protease inhibitors (11873580001, cOmplete, Roche). Samples were then sonicated for 20 seconds, followed by centrifugation for 15 minutes at 13,000 rpm and quantified with micro BCA Assay kit reagent (23235, Thermo Fisher Scientific) using the Spark microplate reader (TECAN). Proteins were separated by SDS-PAGE on precast 4% to 12% Bis-Tris NuPAGE gels (NP0321PK2, Thermo Fisher Scientific) and blotted to Immobilon PVDF membranes (IPVH00010, Merck Millipore) using the XCell II blot module (EI9051, Thermo Fisher Scientific). Membranes were then saturated for 1 hour in Tris-buffered saline containing 5% BSA and incubated overnight with the antihuman primary antibodies recognizing: JMJD6 (ab64575, Abcam and P1495, Sigma-Aldrich), Actin-β (A1978, Sigma-Aldrich), ERα (sc-544, G20, Santa Cruz Biotechnology and MA1–80216, Invitrogen), ANXA1 (ab214486, Abcam) and Vinculin (V9131, Sigma-Aldrich). After hybridization with the appropriate secondary antibody (anti-rabbit and anti-mouse IgG, GE HealthCare), proteins were detected by chemiluminescence (EuroClone).
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7

Quantifying JMJD6 Protein Levels

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To analyze changes of JMJD6 in protein levels, total protein was first isolated from transfected A549 and H460 cells using RIPA lysis buffer (Sigma-Aldrich, Germany) Protein was quantified using BCA protein assay kit (Thermo Scientific, MA, USA). Thereafter, 10% SDS-PAGE (Beyotime, Shanghai, China) was used for isolation of protein through electrophoresis followed by protein transferring into PVDF membranes. Primary antibodies anti-JMJD6 (1:1000, ab64575, Abcam, Cambridge, UK) and anti-GAPDH (1:2000, ab8245, Abcam) were incubated at 4℃ overnight with membranes, which were first blocked by 5% non-fat milk powder. Next, PVDF membranes were rinsed with TBST (Thermo Scientific) twice and cultured with HRP-marked goat anti-rabbit IgG (1:800, ab6721, Abcam) for 2h at 25°C. Pierce™ ECL (Thermo Scientific) was used for developing and proteins were analyzed through Image J (National Institutes of Health, USA). Experiments were run in a triplicate.
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