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5 protocols using western lightning chemiluminescence plus reagent

1

Western Blot Analysis of AR and SPOP

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Whole cell protein extracts from tissue and cell were denatured, separated on SDS-PAGE gels and transferred to nitrocellulose membranes. After blocking in 5% enhanced blocking agent (GE) in Tris-buffered saline–Tween, membranes were probed overnight at 4°C with either, AR (1;1000; cat# 5153, Cell Signaling), SPOP (1:1000; ab168619, Abcam), or phospho-AR (S81) (1:1000; cell signaling, CA USA). After incubation with the appropriate secondary antibody, results were detected using Western Lightning Chemiluminescence Reagent Plus, according tothe manufacturer’s instructions (ThermoFisher Scientific) and captured on film. Quantitative measurements of Western blot analysis were performed using ImageJ and Graph-Pad software (Prism 7).
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2

Western Blot Analysis of EZH2, E-cadherin, and β-Actin

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Whole cell protein extracts from tissue and cell were denatured, separated on SDS-PAGE gels and transferred to nitrocellulose membranes. After blocking in 5% enhanced blocking agent (GE) in Tris-buffered saline–Tween, membranes were probed overnight at 4°C with the following primary antibodies: EZH2 (1:1000 dilution; cell signaling, CA USA), E-cadherin and B-Actin (1:1000, Santa Cruz). After incubation with the appropriate secondary antibody, results were detected using Western Lightning Chemiluminescence Reagent Plus according to the manufacturer’s instructions (ThermoFisher Scientific) and captured on film. Quantitative measurements of Western blot analysis were performed using ImageJ and Graph-Pad software (Prism 7).
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3

Preparation and Use of MLN4924 in Vitro and In Vivo

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MLN4924 was a gift from Fudan University. For in vitro studies, MLN4924 was dissolved in dimethyl sulfoxide (DMSO) and kept in −20 °C. MLN4924 was dissolved in 10% 2-hydroxypropyl- b-cyclodextrin (HPBCD) for the in vivo studies. The MLN4924 solution was freshly made every week and stored in a dark at room temperature before use.
Cell culture reagents and fetal bovine serum (FBS) were obtained from Gibico (Grand Island, NY, USA). The Oligofectamine reagent and Western Lightning Chemiluminescence Plus reagent was from Thermo Scientific Pierce (Waltham, MA, USA). The Annexin-V/propidiumiodide (PI) kit was from BD Biosciences Franklin Lakes, NJ, USA). Human NPC cells used in this study were stored in our lab and were cultured in DMEM medium containing 10% FBS at 37 °C in 5% CO2.
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4

Evaluating Apoptotic Signaling Pathways

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Cell culture medium and fetal bovine serum were purchased from Invitrogen (Carlsbad, CA, United States). Antibodies to the following proteins were used: PARP (BD Biosciences, San Jose, CA, United States, Cat#556494); Jab1 (Santa Cruz, CA, United States, Cat#sc-13157); p-Akt (p-Thr308) (Cell Signaling, Danvers, MA, United States, Cat#13038), T-Akt (Cell Signaling, Danvers, MA, United States, Cat#2920) and β-actin (Cell Signaling, Danvers, MA, United States, Cat#3700). Western Lightning Chemiluminescence Plus reagent was from Thermo Scientific Pierce (Rockford, IL, United States, Cat# 34087). Annexin V/PI kit was from BD (Cat# 556547). AZA (Cat# 95054), DMSO (Cat# D2650), and 3(4,5)dimethylthiahiazo(zy1)3,5diphenytetrazoliumromide (MTT) (Cat# M2128) were from Sigma.
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5

Protein Expression Analysis in Leukemic Cells

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We used cell lysates derived from U937 and THP-1 cells in the log phase of growth, leukemic cells from AML-M5 patients, and CD34+ cells from healthy donors. The membrane was probed with anti-Jab1 (Santa Cruz Biotechnology), anti-Trx (Abcam, Cambridge, UK), Flag-Tag (Sigma-Aldrich, St. Louis, MO), Nrf2, His-Tag, and HA-Tag (Cell Signaling, Danvers, MA) antibodies and β-actin (Sigma-Aldrich) and visualized with a secondary antibody and Western Lightning Chemiluminescence Plus reagent (Thermo Scientific Pierce, Rockford, IL).
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