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G csf

Manufactured by RayBiotech
Sourced in United States

G-CSF is a recombinant granulocyte colony-stimulating factor. It is a protein that stimulates the production and release of neutrophils, a type of white blood cell, from the bone marrow.

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4 protocols using g csf

1

ELISA Analysis of Inflammatory Factors in BV-2 Cells

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BV-2 cells were treated for 24 h and then supernatants from controls (dH2O only), from cells treated with GLE (0.5 mg/ml) only, LPS only (1.0 μg/ml), and GLE (0.5 mg/ml) + LPS (1.0 μg/ml) (where LPS was added after 1 h incubation with GLE), were used in the assay. Specific ELISAs (RayBiotech, Norcross, GA, USA) were performed using G-CSF (Cat# ELM-G-CSF), IL1α (Cat# ELM-IL1a), MCP-5 (Cat# ELM-MCP5), MIP3α (Cat# ELM-MIP3a), and RANTES (Cat# ELM-RANTES) following manufacturer’s instructions and as previously described (Mendonca et al., 2017 (link)). Briefly, 100 μl of supernatant from samples and standards were added to 96 well plates pre-coated with the capture antibody. After incubation, 100 μl of prepared biotinylated antibody mixture was added to each well and incubated for 1 h. The mixture was then decanted, and streptavidin solution (100 μl) was placed in each well and incubated. Substrate reagent (100 μl) was then added to each well for 30 min, followed by the addition of stop solution (50 μl). Data were quantified by optical density at 450 nm.
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2

ELISA Analysis of Inflammatory Factors in BV-2 Cells

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BV-2 cells were treated for 24 h and then supernatants from controls (dH2O only), from cells treated with GLE (0.5 mg/ml) only, LPS only (1.0 μg/ml), and GLE (0.5 mg/ml) + LPS (1.0 μg/ml) (where LPS was added after 1 h incubation with GLE), were used in the assay. Specific ELISAs (RayBiotech, Norcross, GA, USA) were performed using G-CSF (Cat# ELM-G-CSF), IL1α (Cat# ELM-IL1a), MCP-5 (Cat# ELM-MCP5), MIP3α (Cat# ELM-MIP3a), and RANTES (Cat# ELM-RANTES) following manufacturer’s instructions and as previously described (Mendonca et al., 2017 (link)). Briefly, 100 μl of supernatant from samples and standards were added to 96 well plates pre-coated with the capture antibody. After incubation, 100 μl of prepared biotinylated antibody mixture was added to each well and incubated for 1 h. The mixture was then decanted, and streptavidin solution (100 μl) was placed in each well and incubated. Substrate reagent (100 μl) was then added to each well for 30 min, followed by the addition of stop solution (50 μl). Data were quantified by optical density at 450 nm.
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3

Quantification of Secreted Factors in Tumor Microenvironment

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Snap-frozen tumor samples were crushed into fragments <2 mm in diameter and resuspended with 1:2 weight/volume of 2×PBS and rotated at 4°C for 2 h. The samples were vortexed then spun for 3 min at 5,000 RPM then the tumor extracellular fluid was collected36 (link). Collected cultured cells and diluted to 2 × 106/ml with PBS. Broke up cells by ultrasonic and spun for 10 min at 10000 g then the cell lysate was collected. Serum samples and/or tumor extracellular fluid and/or cell lysate from the control and SH-treated groups were applied to ELISA kits, following the manufacturer 's protocol to quantify bFGF (CUSABIO, China), PF-4 (CUSABIO, China), G-CSF (RayBiotech, USA) and GM-CSF (RayBiotech, USA).
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4

Quantification of Signaling Factors

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AngII, IL-10, GM-CSF, G-CSF, Eotaxin-2, and CXCL11 ELISA kits were all obtained from Ray Biotech, Inc. (Norcross, GA, USA). TNFSF14 ELISA kits was obtained from CUSABIO Inc. (Wuhan, China). The ELISA for them was carried out according to the manufacturer’s instructions. Two independent experiments were performed, each in triplicate. For AngII ELISA, the microplate in the kit, which is pre-coated with anti-rabbit secondary antibody, was incubated with an anti-AngII antibody, under such conditions that both biotinylated AngII peptide and a peptide standard or targeted peptide in the samples interacted competitively with the AngII antibody. Unbound biotinylated AngII peptide was then allowed to interact with streptavidin-horseradish peroxidase (SA-HRP), which catalyzes a color development reaction. The intensity of the colorimetric signal is directly proportional to the amount of the biotinylated peptide-SA-HRP complex and inversely proportional to the amount of the AngII peptide in the standard or samples. A standard curve of known concentration of AngII peptide was established, and the concentration of AngII peptide in the samples was then calculated by interpolation onto the standard curve. All groups of tumor cells were all seeded at a density of 200,000 cells/well in 1 ml medium in 24-well plates.
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