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6 protocols using recombinant human ccl5

1

Immunoblot Analysis of CCL5-Mediated Signaling

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Immunoblot assay was performed as previously described.51 (link) GBM cells were treated with recombinant human CCL5 (10 ng/mL, R&D) together with or without the AKT inhibitor MK-2206 (Selleckchem, 500 nmol/L), with or without the DNA-PKcs inhibitor KU-57788 (Selleckchem, 1 μmol/L). To block the function of CCR5, MVC was added 1 h before pericyte CM stimulation. Antibodies used for immunoblot assays included anti-AKT (Cell Signaling Technology, #4685, 1:1000), anti-p-AKT-Ser473 (Cell Signaling Technology, #4060, 1:1000), anti-γ-H2AX (Cell Signaling Technology, #9718, 1:1000), anti-DNA-PKcs (Cell Signaling Technology, #38168, 1:1000), anti-p-DNA-PKcs-Ser2056 (Cell Signaling Technology, #68716, 1:1000), anti-GAPDH (Proteintech, #60004, 1:10,000).
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2

Immunofluorescence Labeling of Cell Membrane Proteins

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We obtained anti-human CCR5 45531 from R and D Systems (Minneapolis, MN), anti-actin from Sigma Aldrich (St. Louis, MO), anti-Giantin 924302 from Biolegend (San Diego, CA), Alexa Fluor 488 FluoroNanogold goat anti-mouse IgG Fab from Nanoprobes.com (Yaphank, NY), AffiniPure Donkey Anti-Rabbit IgG (H + L) from Jackson ImmunoResearch (West Grove, PA), Alexa Fluor 488 goat Anti-Mouse IgG (H + L) from Invitrogen (Carlsbad, CA), Anti-SNAP-tag Antibody (Polyclonal) from New England Biolabs (Ipswichm, MA). Hybridoma cells expressing anti-Myc 9E10 were obtained from ATCC. Saponin (from quillaja bark), LPS (from Escherichia coli 0111:B4), glutaraldehyde, and fumonisin B1 (from Fusarium moniliforme) was purchased from Sigma Aldrich (St. Louis, MO). Recombinant human CCL5 was obtained from R and D Systems (Minneapolis, MN).
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3

Pericytes Protect GBM Cells from TMZ

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Pericytes (5 × 104) and GBM cells (5 × 104) were, respectively, cultured in the upper or lower chamber in 6-well transwell apparatus, followed by the treatment of TMZ (500 μmol/L, Selleckchem, S1237). To determine the protective effect of pericytes or CCL5 on GBM cells, GBM cells were pretreated with or without pericyte CM, recombinant human CCL5 (10 ng/mL, R&D), or MVC (500 nmol/L, Selleckchem, S2003), followed by TMZ (500 μmol/L) treatment 4 h later. Apoptotic analysis was performed using Annexin-V Apoptosis Detection Kit (Invitrogen, 88-8007-74) according to the manufacturer’s instructions. Cell survival analysis was performed using CCK-8 (Dojindo, CK04) as previously described.48 (link)
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4

Chemokine and Inhibitor Protocol

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Recombinant human CCL5 (cat# 278-RN), CXCL12 (cat# 350-NS) and pertussis toxin (PTX, cat# 3097) were purchased from R&D (Minneapolis, MN). Wortmannin (cat# W1628), 1-[6-[((17β)-3-Methoxyestra-1,3,5[10]-trien-17-yl)amino]hexyl]-1H-pyrrole-2,5-dione (U73122, cat# U6756) and retinoic acid (RA, cat# R2625) were from Sigma-Aldrich (St. Louis, MO).
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5

Lung Cancer Cell Sensitization to Chemotherapy

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NSCLC A549 (lung adenocarcinoma) and H1299 (lung large cell carcinoma) cell lines were purchased from the China Center for Type Culture Collection, and cultivated in RPMI-1640 medium supplemented with 10% FBS, 100 U/ml penicillin and 100 µg/ml streptomycin in a humidified incubator with 5% CO2 at 37°C. Cells in the logarithmic growth phase were used for all experiments.
For cell treatment, cancer cells were incubated with CAF-CM or NF-CM in combination with either anti-CCL5 antibody (0.1 µg/ml; cat. no. MAB678-SP; R&D Systems, Inc.), CCR5 antagonist (Met-RANTES; 0.1 µg/ml; cat. no. 335-RM-025; R&D Systems, Inc.) or recombinant human CCL5 (3 ng/ml; cat. no. 300-06; PeproTech, Inc.) for 6 h, followed by treatment with 50 µM DDP (Sigma-Aldrich; Merck KGaA) in the presence of CM for another 48 h.
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6

CoCl2 and SIN-1 Induced Cellular Responses

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CoCl2 and SIN-1 were purchased from Sigma-Aldrich (St. Louis, MO, USA). Recombinant human CCL5 was purchased from R&D Systems (Minneapolis, MN, USA).
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