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4 protocols using cx 5461

1

Inhibitors and Antibodies for Cell Signaling

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Inhibitors CAY10657 (Cat# 11140, CAS № 494772-86-0) and 5Z-7-oxozeaenol,Ox1, (Cat# 17459, CAS № 253863-19-3), and U0126 (Cat#70970) were obtained from Cayman Chemical (Ann Arbor, Michigan); 5Z-7-oxozeaenol, Ox2, (Cat#3604) was obtained from Tocris Bio-Techne (Minneapolis, MN); BMS-345541 (Cat#A3248), CX-5461 (Cat# A8337), Birinapant TL-32711 were from APExBio (Houston, TX); SB202190 (Cat# 559388) was from Calbiochem (EMD Millipore; Billerica, MA); Nutlin 3A (Cat# SML0580) was obtained from Sigma Aldrich (Atlanta, GA). Antibodies for: GAPDH (Cat# sc-25778), Fibrillarin (Cat# sc-25397), and IκBα (Cat# sc-371) were from Santa Cruz Biotechnology, Inc. (Santa Cruz, CA); RELA/p65 (Cat# 8242) and phospho-p65/RELA (Ser536) (Cat#3033); phospho-p53 (Ser15) (Cat# 9284) were from Cell Signaling Technology (Danvers, MA); α-Tubulin (Cat# T6074), Goat anti-Rabbit IgG (H + L)-Horseradish Peroxidase (HRP) (Cat# 170–6515) and goat anti-Mouse IgG (H + L)-HRP (CAT# 170–6516) secondary antibodies were from BIO-RAD Laboratories (Hercules, CA).
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2

Optimizing Drug Treatments in Cell Cultures

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CX-5461 (ApexBio) was dissolved in 50 mM NaH2PO4 (pH 4.5) to obtain a 1 mM stock solution. 2’-C-Methyladenosine (Santa Cruz Biotechnologies) was dissolved in DMSO to obtain a 100 mM stock solution. Doxycycline (Fisher Scientific) was dissolved in H2O to obtain a 100 mM stock solution. Drugs were stored in aliquots at -20°C. Treatments were performed with drugs or vehicle diluted in medium at the indicated concentrations as described in the Results. For qRT-PCR analysis, EU incorporation, and EdU incorporation, 30-50% confluent cells were treated for 24 h. For MTT analysis, cells were treated for 3-5 days refreshing the medium every 48 hours for the duration of the treatment.
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3

Molecular Effects of Therapeutic Agents in Pulmonary Hypertension

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CX‐5461 was from ApexBio Technology LLC (Houston, TX, USA). Monocrotaline (MCT, #C2401) and Sugen (SU 5416, #S8442) were purchased from Sigma‐Aldrich (St Louis, MO, USA). Pifithrin‐α was purchased from Selleck Chemicals (Houston, TX, USA). Primary antibodies used were as follows: phospho‐UBF1 (S484) (#ab182583, 1:100 for immunohistochemistry), proliferating cell nuclear antigen (PCNA) (#ab18197, 1:500 for immunofluorescence, RRID:AB_444313), α‐smooth muscle actin (α‐SMA, #ab5694, 1:200 for immunohistochemistry, RRID:AB_2223021), CD68 (#ab125212, 1:500 for immunohistochemistry, RRID:AB_10975465), CD4 (#ab203034, 1:400 for immunohistochemistry), CD8 (#ab33786, 1:200 for immunohistochemistry, RRID:AB_726709), and CD31 (#ab182981, 1:1500 for immunohistochemistry) were from Abcam (Cambridge, UK). Antibodies for p53 (#2524, 1:1000 for western blot, RRID:AB_331743) and phospho‐p53 (Ser15) (#9284, 1:1000 for western blot and 1:150 for immunohistochemistry, RRID:AB_331464) were from Cell Signaling (Beverley, MA, USA).
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4

CX-5461 Inhibition of LPS/IFN-γ

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CX-5461 (purchased from ApexBio Technology LLC, Houston, TX, United States) was initially dissolved in DMSO, and diluted in the culture medium to the final concentration of 1 μM (treatment duration 24 h). DMSO was used as vehicle control. LPS was purchased from Solarbio (Beijing, China) and used at the final concentration of 1 μg/ml. IFN-γ was from Proteintech (Wuhan, Hubei Province, China) and used at 150 U/ml.
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