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2 protocols using triptolide

1

Small Molecule Inhibitor Protocol

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The ATR inhibitor VE822 and the CDK1 inhibitor (RO-3306) were purchased from Selleck (S7102) and Calbiochem (217699) respectively. Hydroxyurea (HU) was purchased from TCI Chemicals (H0310), Cordycepin and N-Acetyl-cysteine (NAC) were purchased from Wako (017-05131), 5,6-dichloro-1-β-dribofuranosylbenzimidazole (DRB) from Cayman Chemical (10010302), and triptolide from AdipoGen (AG-CN2-0448). 5-Ethynyl Uridine (EU) was purchased from Thermo Fisher Scientific (E10345). CDC7 inhibitor PHA-767491 was purchased from Sigma-Aldrich (PZ0178). Concentrations and conditions used in each assay are listed in Figure legends.
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2

Cell Culture and Genetic Manipulation

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HeLa cells (laboratory stock) and 293FT cells (Thermo Fisher Scientific) were maintained in Dulbecco’s modified Eagle medium (DMEM, FUJIFILM) supplemented with 10% fetal bovine serum (FBS, Invitrogen) and antibiotics, unless otherwise noted. Mycoplasma testing was performed routinely. Cell lines stably expressing Strep-V5-GFP-TFIIS were obtained by selecting HeLa cells transfected with pEGFP-C1-Strep-V5-GFP-TFIIS plasmid in medium containing 500 μg ml−1 G418 (Nacalai Tesque). HeLa ΔCSB cells were transfected with pEGFP-C1-Strep-V5-GFP-CSB plasmid in medium containing 500 μg ml−1 G418 (Nacalai Tesque). Unless otherwise indicated, the following doses of chemicals were used: CB5083 (10 μM, Selleck), DRB (100 μM, TCI), epoxomicin (1 μM, FUJIFILM), formaldehyde (600 μM, Nacalai Tesque), MG262 (1 μM, AdipoGen Life Sciences), NMS873 (10 μM, Sigma-Aldrich) and triptolide (3 μM, AdipoGen Life Sciences).
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