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4 protocols using nvp bep800

1

Cell Line Characterization and Compound Screening

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HepG2 (SCSP-510), Huh7 (SCSP-526), and L02 (GNHu 6) were purchased from the Cell Bank, Chinese Academy of Medical Sciences (Shanghai, China). MHCC97H were obtained from the Liver Cancer Institute, Zhongshan Hospital, Fudan University, Shanghai, China. HepG2-Luc were constructed by Cloud-Clone Corp (Wuhan, China). All cell lines were authenticated, and cells were thawed upon arrival, expanded, and stored in a liquid nitrogen tank. The absence of mycoplasma cell contamination was confirmed using MycAwayTM-Color One-Step Mycoplasma Detection Kit (40611ES, Yeasen, China). All the cell lines were cultured in Dulbecco’s modified Eagle’s medium (Gibco, USA) supplemented with 10% fetal bovine serum (Gibco, USA) at 37°C, 5% CO2. Ganetespib (STA9090) (22 (link)) (S1159), Novobiocin (NB) (23 (link)) (S2492), NVP-BEP800 (24 (link)) (S1498), MG132 (S2619), and cycloheximide (CHX) (S7418) were purchased from SelleckChem (USA).
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2

Western Blot Analysis of Cell Lines

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The following primary antibodies were used for western blots of both mouse and human cell lines: anti-MLKL (produced in-house;25 (link) available as MABC604, EMD Millipore, Billerica, MA, USA), anti-GAPDH (2118, Cell Signalling Technology, Danvers, MA, USA), anti-Actin (A-1987, Sigma-Aldrich, St Louis, MO, USA), anti-RIPK1 (610458, BD Biosciences, Franklin, NJ, USA), anti-Hsp90 (ADI-SPA-835, Enzo, Life Sciences, Farmingdale, NY, USA), anti-Cdc37 (D11A3, Cell Signalling Technology), and anti-VDAC (Sigma-Aldrich). Anti-mouse RIPK3 (PSC-2283-c100, Axxora, San Diego, CA, USA) and anti-human RIPK3 (ab56164, Abcam, Cambridge, UK) were used for their respective cell lines.
Recombinant hTNF-Fc, produced in-house, and the Smac mimetic, Compound A, were described previously.71 (link), 72 (link) QVD-OPh was obtained from R&D Systems (Minneapolis, MN, USA). Both NVP-BEP800 and 17-AAG were obtained from Selleckchem (Sydney, NSW, Australia), and AT13387 was produced by Active Biochem (Wanchai, Hong Kong).
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3

Regulation of VEGFR1/2 Expression by Hsp90

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HUVECs were seeded in 96-well plates. After 24 h, the plasmids, namely, pEZX–PG04–VEGFR1 and pEZX–PG04–VEGFR2 (FulenGene, China), were either transfected separately into cells, co-transfected with pcDNA3–Hsp90β or pRNAT-U6-siHsp90β, or incubated with NVP-BEP800 (Selleck, USA) for 48 h. Gaussia and secreted alkaline phosphatase (SEAP) luciferase activities were consecutively measured by a dual-luciferase reporter assay system (FulenGene, China) after 48 h of transfection. Gaussia luciferase activity was normalized to SEAP activity.
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4

MTT Assay for Cell Viability

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MTT (3-(4, 5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay was performed using MTT reagent Thiazolyl Blue Tetrazolium Bromide reconstituted in culture medium (5 mg/mL) to evaluate cell viability and proliferation, as has been described previously [69 (link)]. Briefly, cells were seeded at 100,000 cell/cm2 on 96-well culture plates and exposed to treatment conditions: BMSC-CM or ADSC-CM, recombinant proteins; HSPA5, HSPA9 or HSP90β1 (Aviva Systems Biology, San Diego, CA, USA) and HSP 70/90 family inhibitors; VER155008, HA15 or NVP-BEP800 (Selleckchem, Munich, Germany). After treatment, cells were washed with PBS, followed by incubation with MTT solvent for 3 h at 37 °C in a humidified incubator. Cell supernatant was replaced with dimethyl sulfoxide (DMSO) and absorbance readings were measured using the Varioskan™ Flash microplate reader (Thermo Scientific, Loughborough, UK) at 595 nm wavelength. The degree of cell viability was presented as a percentage of optical density (OD) relative to control.
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