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3 protocols using tautomycin

1

Preparation of Small Molecule Stocks

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4,5,6,7-tetrabromobenzotriazole (TBB) (Sigma), CX-4945 (MedChem Express), calyculin A (CalBiochem), and tautomycin (EMD Millipore) were dissolved in dimethylsulfoxide (DMSO) (Sigma) to create stock solutions. Control cell lines were dosed with a volume of DMSO equivalent to the volume received by the cells treated with the highest concentration of drug.
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2

Protein Phosphatase Inhibitors Protocol

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Protein phosphatase inhibitors Tautomycin and LB-100 were purchased from EMD Millipore (Cat. No. 580551) and MedKoo (Cat. No. 206834), respectively. ENAN-34017 was synthesized in house as reported previously [54 (link)]. GYH-2-18 was synthesized at Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College. All the compounds were dissolved in DMSO and stored at -20°C.
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3

Plasmid Constructs for PP1, IRF7, and TLR7 Studies

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Flag-PP1 (α, β and γ) expression plasmids cloned in Flag-CMV4 were provided by Dr. Sherry Winter [53 (link)]. Flag-IRF7 expression plasmids and its mutants were described previously [54 , 55 (link)]. 2XMyc-IRF7 plasmids were generated by subcloning of 2XMyc-IRF7 fragment (by PCR amplification from pcDNA3-IRF7) into pCMV-Tag3B (Stratagene). TLR7 cDNA was cloned from human genome (the human B cell line BJAB) by PCR amplification. Deletion and point mutants were generated by site-directed mutation (Stratagene), and verified by sequencing. PE-conjugated IRF7(p477/479) antibody (clone K47–671) for flow cytometry was purchased from BD Biosciences. The same clone with higher concentration but without conjugation was customized for immunoblotting. Mouse anti-PP1 (clone E-9), mouse anti-PP1α (clone G-4), goat anti-PP1α (clone C19), mouse anti-IRF7 (clone G-8), rabbit anti-IRF7 (clone H-246), goat anti-mouse IgG-HRP, mouse anti-rabbit IgG-HRP, and mouse anti-goat IgG-HRP, were purchased from Santa Cruz. Flag (clone M2) and Myc (clone 9E10) antibodies were from Sigma and Roche, respectively. FITC-, PE-, APC-, and PerCP-eFluor710-conjugated antibodies for flow cytometry were purchased from eBioscience. Gardiquimod (designated as “Gardi” in figure legend) and HIV-1 ssRNA40 and controls were purchased from Invivogen. IFNα2 was purchased from Sigma. Tautomycin was purchased from EMD Millipore.
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