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12 protocols using penicillin

1

Cell Culture and siRNA Transfection

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Burkitt lymphoma cells (BL2) were cultured in RPMI medium 1640 (GIBCO) with 10% fetal calf serum (GIBCO), 10 000 U/ml penicillin and 10 mg/ml streptomycin (Gibco-BRL). LoVo cells were grown in 50% DMEM (GIBCO), 50% F12 (GIBCO) supplemented with 10% fetal calf serum and penicillin-streptomycin, 293T Lα were cultured in DMEM supplemented with 10% Tet System-approved fetal calf serum (Clontech), 300 μg/ml hygromycin B (Roche) and 100 μg/ml zeocin (InvivoGen). To abrogate MutLα expression, 50 ng/ml doxycyclin (Clontech) was added to the media. siRNA transfections were carried out using the calcium phosphate transfection. Synthetic siRNA oligonucleotides sequences (all 5′ to 3′) were as follows: siLuc sequence CGTACGCGGAATACTTCGATT, siMSH2 UCCAGGCAUGCUUGUGUUGAATT and MSH6 CGCCATTGTTCGAGATTTA (Microsynth).
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2

Culturing Human Cancer Cell Lines

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Human cervical cancer HeLa MDR-Off [23 (link)], HeLa TET-off (Clontech Laboratories, Mountain View, CA) and human embryonic kidney 293T cell lines were cultured in Dulbecco's Modified Eagle's medium (DMEM) in high glucose (4.5 g/l), supplemented with 2 mM L-glutamine, 100 I.U./mL penicillin, 100 μg/mL streptomycin and 10% tetracycline approved FBS (Clontech). The parental KB-3-1 cells (a subclone of HeLa) and their drug-resistant sublines KB-8-5, KB-8-5-11 and KB-C1 were grown with colchicine 10 ng/mL, 100 ng/mL and 1 μg/mL, respectively. All variant sublines were also cultured in DMEM supplemented with 10% FBS, penicillin and streptomycin (Gibco, Grand Island, NY). Cells were cultured at 37 °C with 5% CO2 and relative humidity maintained at 95%. Cell cultures beyond passage 10 were discarded.
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3

Fibroblast Response to TGF-β1 Treatment

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Normal human dermal fibroblasts were purchased (Clontech) and were grown in Dulbecco’s modified Eagle’s medium (DMEM, Nacalai tesque) containing 10% fetal bovine serum (FBS), 100 U/ml penicillin, and 100 μg/ml streptomycin (Nacalai tesque) at 37 °C in a humidified 5% CO2 atmosphere. When cells reached ~70% confluency they were starved in DMEM containing 0.1% FBS for 24 h and then pretreated with dimethyl sulfoxide (DMSO) as a control or 4.5 μM of DMSO-diluted LG283. The LG283 doses were optimized on the basis of sequential pilot experiments (data not shown). One-hour after stimulation cells were stimulated with 10 ng/ml human recombinant (r) TGF-β1 (Peprotech) for use in experiments of immunofluorescence staining, real-time reverse transcription-polymerase chain reaction (RT-PCR), and western blot analysis. Fibroblasts between passages 3 and 5 were prepared for all experiments.
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4

Culturing Liver Cancer Cell Lines

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Liver cancer cell lines Hepa1–6, Huh-7 and HepG2 were obtained from ATCC (Manassas, VA, USA). Cells were cultured in Dulbecco’s modified Eagle’s medium (DMEM) (Lonza, Alpharetta, GA, USA), containing 10% heat-inactivated fetal bovine serum (FBS) (Clontech, Mountain View, CA, USA), 100 U/ml penicillin, 100 μg/ml streptomycin, 15 mmol/l HEPES and 200 mmol/l L-glutamine. The cells were maintained at 37°C in a humidified incubator containing 5% CO2. Recombinant mouse and human IFN-γ were acquired from R&D (Minneapolis, MN, USA). Recombinant mouse IP 10 (CXCL10) was purchased from PROSPEC (Israeli). AMG 487 (CXCR3 inhibitor) was obtained from MCE (NJ, USA)
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5

HeLa Cell Culture and Maintenance

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HeLa cells were maintained in Dulbecco’s modified Eagle’s medium (DMEM; Gibco) supplemented with 10% fetal bovine serum (FBS; Gibco), 2 mM L-glutamine (PAN-Biotech), 100 U/ml penicillin (PAN-Biotech), and 0.1 mg/ml streptomycin (PAN-Biotech). HeLa-TREx cell lines were maintained in DMEM supplemented with 10% tetracyclin-free FBS (Clontech), 2 mM L-glutamine, 100 U/ml penicillin, and 0.1 mg/ml streptomycin. For HeLa-TREx cells, 5 µg/ml blasticidin (Invitrogen) and 100 µg/ml zeocin (Invitrogen) were added to the medium to maintain expression of the Tet repressor and YFP-fused TIAR. All cells were cultured at 37°C in 5% CO2. ANI (Sigma-Aldrich) was used at 0.1 µg/ml, CHX (Roth) at 100 µg/ml, and HT (Sigma-Aldrich) at 2 µg/ml. SB202190, SB203580, and SP600125 (all Sigma-Aldrich) were used at 10 µM.
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6

Culturing the INS-1 Rat Insulinoma Cell Line

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The rat insulinoma cell line INS-1 was obtained from the China Center for Type Culture Collection (Wuhan University, Wuhan, China). RPMI-1640 cell culture medium and fetal bovine serum (FBS) were purchased from HyClone (GE Healthcare Life Sciences, Logan, UT, USA).
INS-1 cells were maintained in RPMI-1640 medium containing 11 mM glucose supplemented with 10% (v/v) heat-inactivated FBS, 100 U/ml penicillin, 100 U/ml streptomycin, 10 mM HEPES, 1 mM sodium pyruvate and 50 µM β-mercaptoethanol (all Takara Biotechnology Co., Ltd., Dalian, China). Culture medium was replaced daily until cell confluency reached 80–90%.
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7

Culturing HT1080 Fibrosarcoma Cells

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Human HT1080 fibrosarcoma cells55 (link) were obtained from the American Type Culture Collection (ATCC, Rockville, MD). The cells were routinely cultured in DMEM (Gibco, Waltham, MA) supplemented with 1% penicillin, 1% streptomycin, and 8% tetracycline-free foetal bovine serum (FBS) from Takara (Japan; Cat# 631106). Other human cell lines used in this study are described in the Supplemental Information (Supplementary Fig. 3).
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8

Culturing Rat Cardiac H9c2 Cells

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Rat cardiac H9c2 cells (ATCC, USA) were cultured in Dulbecco's modified Eagle's media (DMEM) (Sigma-Aldrich; Merck KGaA, Darmstadt, Germany), which is supplemented with 10% fetal bovine serum (FBS; Takara Biotechnology Co., Ltd., Dalian, China), 100 ug/ml streptomycin (Takara Biotechnology Co., Ltd.), and 100 unit/ml penicillin (Takara Biotechnology Co., Ltd.) at 37°C in a humidified atmosphere with 5% CO2.
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9

Cell Culture Conditions for MM1S, RPMI8226, and Heca452

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The MM1S and RPMI8226 cell lines were from the American Type Culture Collection (ATCC; Manassas, VA). The Heca452 enriched cell lines were generated from the parental lines as previously described25 (link). Cells were cultured in RPMI1640 media supplemented with 10% heat inactivated foetal bovine serum (hiFBS), 50 U/ml penicillin and 50 µg/ml streptomycin, all from Merck Millipore (Rahway, NJ). Lenti-X™ 293 T cells were from TaKaRa (Shiga, Japan) and maintained in Dulbecco’s modified eagle media (DMEM) supplemented with 10% hiFBS, 50 U/ml penicillin and 50 µg/ml streptomycin. All reagents are from Merk Millipore unless stated otherwise.
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10

PD-1/PD-L1 Blockade Assay for NSCLC Cell Lines and TILs

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The NSCLC cell lines H1650, H23, A549, H460, and H1299 were obtained from the American Type Culture Collection (Manassas, VA) and cultured in complete RPMI 1640 medium with 10% fetal bovine serum (FBS), 100 U/mL penicillin, and 100 mg/mL streptomycin (Gibco, Carlsbad, CA). Blood mononuclear cells were thawed into RPMI-1640 medium supplemented with 10% FBS, 100 U/mL penicillin, 100 mg/mL streptomycin, 50 IU/mL recombinant human interleukin-2 (IL-2), and 1% (10 mg/mL) DNase (Takara Bio, Kusatsu, Japan). TILs were washed and cultured in RPMI-1640 medium supplemented with 10% FBS containing IL-2 (100 U/mL). After 3 days the expanded TILs were extensively washed and fed with IL-2-containing medium for 6 days. For the PD-1/ PD-L1 blockade assay, the TILs and PB mononuclear CD8-positive T cells were cultured (1Â10 5 per well) with 10 mg/mL anti-PD-1 (clone MIH4, eBioscience, San Diego, CA), anti-PD-L1 (clone MIH1, eBioscience), and their isotype control immunoglobulin G (IgG) (eBioscience). After 96 hours, the cells were collected and analyzed by FCM.
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