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14 protocols using granulocyte macrophage colony stimulating factor gm csf

1

Evaluating Immunostimulant Effects on Dendritic Cells

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B16.F10, B16-OVA, and 4T1-Luci cells were cultured according to the manufacturer’s specifications. DC2.4 cells were cultured in RPMI medium supplemented with 10% FBS and penicillin-streptomycin at 37°C with 5% CO2. BMDCs were generated from bone marrow cells flushed from the femurs of C57BL/6J mice and were cultured in the DC medium: RPMI 1640 (Gibco) supplemented with 10% FBS (Gibco), sodium pyruvate (Gibco), granulocyte-macrophage colony-stimulating factor (GM-CSF) (20 ng ml−1; BioLegend), interleukin-4 (IL-4) (10 ng ml−1; BioLegend), 2 mM l-glutamine (Gibco), 20 μM 2-mercaptoethanol (Gibco), penicillin-streptomycin (Gibco), 1× nonessential amino acids (Gibco), and 10 mM Hepes (Gibco). The medium was half replaced two times a week. On day 7, nonadherent and loosely adherent cells were the immature BMDCs.
DC2.4 cells and BMDCs were collected and plated in a 24-well plate at 1 million cells per well for 24 hours and were then incubated with PS3D1, PS3D1@DMXAA, or the physical mixture of PS3D1 and DMXAA with indicated dosages for indicated times. Then, the cells were collected and the Ifnb and Cxcl10 mRNA expression levels were analyzed by qPCR.
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2

Characterization of Dendritic Cell Markers

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Cells were grown in RPMI-1640 or DMEM complete growth media containing Heat-inactivated fetal bovine serum (FBS) (Gibco, USA), and Penicillin-streptomycin solution (Pen/Strep) (HyClone, South Logan, USA). Both Phosphate-buffered saline (PBS) and Hanks’ balanced salt solution (HBSS) were obtained from UFC Biotech (KSA). Lymphoprep™ - 1.077 g/mL was purchased from Axis-Shield PoC AS (Norway). Purified Escherichia coli LPS and Dimethyl Sulfoxide (DMSO)-1.10 g/mL (Sigma-Aldrich®, St. Louis, USA) was used. Vitamin D3 was purchased from Nature Made (USA). All CCR7, CD83, CD80, CD14, CD71 recombinant monoclonal antibodies, recombinant human interleukin 4 (IL-4), and granulocyte-macrophage colony-stimulating factor (GM-CSF) were obtained from BioLegend® (San Diego, California). CD3 was purchased from Invitrogen (Carlsbad, California). Isotype control, CD11c, and CD86 recombinant monoclonal antibodies were purchased from R&D systems (Minneapolis, MN, USA). Lithium Heparin tubes were from Xinle sci&tech co., ltd. (China). Magnesium Sulphate anhydrous (anh. MgSO4) (M.W. =120, 37) was purchased from Panreac Quimica SA, Barcelona, Spain. Camptothecin (CPT) (Sigma Aldrich®, St. Louis, USA) was used.
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3

Bone Marrow-Derived Dendritic Cell Isolation

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To obtain BMDCs, the bone marrow was flushed from the femur and tibia, and clusters within the bone marrow suspension were dispersed by vigorous pipetting. After red blood cell (RBC) lysis using RBC lysis buffer, the cells were washed twice with fresh cell culture medium. The cells were seeded with 20 ng/mL granulocyte-macrophage colony-stimulating factor (GM-CSF) (BioLegend, San Diego, CA, USA) into 100 mm Petri dishes at a concentration of 1 × 106 cells/mL. On days 3 and 6, half of the culture medium was replaced with fresh cell culture medium containing 20 ng/mL GM-CSF. In some experiments, the BMDCs were generated with 10 ng/mL of IL-4 (BioLegend, San Diego, CA, USA) and 20 ng/mL GM-CSF rather than GM-CSF alone. For all experiments, the BMDCs were harvested on day 8. To induce BMDC maturation, the BMDCs were replated in 6- or 24-well plates at 1 × 106 cells/mL in fresh cell culture medium, and 100 ng/mL LPS (Sigma, Burlington, MA, USA) was added for the indicated durations.
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4

Differentiation of Myeloid Dendritic Cells

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Mice were euthanized by overdose of the association of dissociative anesthetic (ketamine, 300 mg/Kg) and alpha 2 adrenoreceptor agonist (xylazine, 30 mg/Kg) administered intraperitoneally. Bone marrow precursors were collected from the tibia and femur, and the cell suspension was adjusted to a concentration of 2 × 105 cells/mL and seeded in a 96-well plate. Cells were maintained for seven days (culture medium was changed every other day) at 37 °C and 5% CO2 in Iscove’s Modified Dulbecco’s Medium (IMDM), containing 10% fetal bovine serum (FBS), 50 μg/mL gentamicin (Gibco, ThermoFisher Scientific Inc., Waltham, MA, USA) and supplemented with 10 ng/mL Granulocyte-Macrophage Colony-Stimulating Factor (GM-CSF; Biolegend, San Diego, CA, USA; #505406) [17 (link)]. This protocol differentiates precursor cells in conventional/myeloid DCs. Supplementary Figure S1 shows the gate strategy and percentages of DCs obtained from precursor cells.
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5

Murine Bone Marrow Dendritic Cell Differentiation

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Bone marrow from 6-week-old male C57BL/6 mice was used. The femur and fibula were collected and washed with RPMI-1640 medium to obtain cell suspensions. Differentiation of isolated bone marrow cells into dendritic cells was performed as described previously (Sakaki et al., 2013 (link)). Granulocyte-macrophage colony stimulating factor (GM-CSF), a differentiation inducer, was purchased from BioLegend (San Diego, CA, United States).
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6

Isolation and Culture of Bone Marrow-Derived Cells

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For bone marrow-derived MC (BMMC) culture, WT bone marrow was obtained from WT C57BF/6 mice in ice-cold Hank's Balanced Salt Solution (HBSS, Gibco), and cultured in complete RPMI containing 10% fetal bovine serum (FBS) (Hyclone), 1 mM nonessential amino acids, 25 mM HEPES, 2 mM L-glutamine, 1 mM sodium pyruvate, 1× Antibiotic-Antimycotic (all reagents from Gibco), 10 ng/ml SCF and 5 ng/ml IL-3 (BioLegend) for 8 to 12 weeks. For BMDC culture, bone marrow was obtained from WT C57BL/6 or CD301b-DTR-GFP mice and cultured in RPMI media containing 10% FBS, 1× GlutaMAX® (Gibco), 20 ng/ml granulocyte macrophage colony-stimulating factor (GM-CSF) (BioLegend), or 20 ng/ml GM-CSF and 50 ng/ml IL-4 for 6-7 days. For bone marrow-derived macrophage (BMM) culture, the same procedures were followed replacing the growth factors with 20 ng/ml macrophage colony-stimulating factor (M-CSF). The rat MC RBL-2H3 cells (ATCC) were cultured in minimum essential medium (MEM) medium (Gibco) containing 15% FBS and antibiotics. JAWSII cells (ATCC) were maintained in MEM α medium (Gibco) supplemented with 20% FBS, 1 mM sodium pyruvate, 100 U/ml penicillin, and 100 μg/ml streptomycin. All cells were cultured at 37 °C in a humidified water-jacketed incubator under 5% CO2 / 95% air atmosphere.
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7

Generation and Activation of Bone Marrow-Derived Dendritic Cells

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BMDCs were generated and activated as previously described.21 ,44 (link) In short, the femur and tibia were removed from either WT or TLR2-/- mice with the bone marrow being removed in a sterile hood. Red blood cells were lysed and 5 × 105 progenitor cells/mL were resuspended and plated in RPMI 1640 supplemented with 10% FBS and 10 ng/mL Granulocyte-Macrophage Colony Stimulating Factor GM-CSF (Biolegend, San Diego, CA). BMDCs were cultured for 6 days at 37°C in 5% CO2 with replenishing of complete media and cytokines on days 2 and 4. On day 6, BMDCs were removed and replated at 5 × 105 cells/well. After 2 hours, BMDCs were incubated with a concentration of 10:1 BC, LGG, heat-killed LGG, or HBSS for 4 hours. At 4 hours, 200 ug/mL gentamycin was added to kill all extracellular bacteria and cells were washed 3 times with HBSS. Fresh media then was given and BMDCs were incubated for an additional 20 hours. BMDCs then were stained and analyzed by FCM for expression of CD80 and CD86.
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8

Isolation and Culture of Murine Dendritic Cells

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The mice were euthanized; tibiae and femurs were harvested, and the bone marrow cells were collected by flushing the bones with RPMI-1640 using a syringe with a 25-gauge needle and filtering the suspension through a 70-μm-cell strainer to prepare a single-cell suspension. The cells were subsequently incubated with Red Blood Cell (RBC) lysis buffer (Sigma-Aldrich Corp., St. Louis, MO) at 37°C for 5 minutes. The cells were cultured in “complete” RPMI-1640 media supplemented by 20ng/ml granulocyte-macrophage colony-stimulating factor (GM-CSF; Biolegend, Inc., San Diego, CA), 5% fetal bovine serum (FBS; Atlanta Biologicals, Inc., Atlanta, GA), 100μg/ml streptomycin and 100U/ml penicillin (Thermo Fisher Scientific Inc, Waltham, MA), 2mM L-glutamine (Sigma-Aldrich Corp., St. Louis, MO) and 1M HEPES (Gibco-Thermo Fisher Scientific Inc, Waltham, MA). On days 3 and 5, the RPMI-1640 medium (supplemented with 20ng/ml GM-CSF) was changed. On day 7, 1×107 DCs were harvested. This culture protocol yields more than 90% CD11chigh monocyte derived DCs.[35 (link)]
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9

Murine Bone Marrow Dendritic Cell Isolation

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Bone marrow cells were collected from the femurs and tibiae of 6- to 8-week-old female C57BL/6 mice and cell suspension was prepared. Cells were incubated with Red blood cell (RBC) lysis buffer (Sigma-Aldrich, St. Louis, MO) at 37°C for 10 minutes. Cells were then seeded in six-well plates at 5×105 cells/well concentration, and were cultured in RPMI-1640 medium supplemented with 20 ng/mL of granulocyte-macrophage colony-stimulating factor (GM-CSF; Biolegend, San Diego, CA), 10% fetal bovine serum (FBS; Atlanta biologicals, Atlanta, GA), 100U/ml penicillin and 100μg/ml streptomycin. On day 3, the culture medium was changed and on day 5, about Π107 bone marrow derived dendritic cells (BMDCs) were harvested.
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10

Murine Bone Marrow-Derived Dendritic Cell Protocol

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The bone marrow was flushed out of the euthanized mouse’s femurs and tibias with RPMI 1640. Following tissue disruption and red blood cells lysis, the bone marrow cells were cultured in RMPI 1640 medium supplemented with 50 U/mL penicillin, 50 µg/mL streptomycin, 50 µg/mL gentamycin, 10% v/v fetal calf serum (FBS; all from Gibco, Grand Island, NY, USA), 2 mM L-glutamine (Hyglos GmbH, Bernried, Germany) and 20 ng/mL granulocyte-macrophage colony-stimulating factor (GM-CSF; Biolegend, San Diego, CA, USA). The medium was partially replenished every day. BMDC were obtained after 7 days of differentiation. These cells were then used as antigen presenting cells (APC) by treating them with 5 µg/mL endotoxin-free OVA in the presence or absence of 5 µg/mL CDA/CDG (InvivoGen, San Diego, CA, USA) or 1 µg/mL lipopolysaccharide (LPS, InvivoGen, San Diego, CA, USA). To elucidate the cross-presentation pathway, BMDC were alternatively treated with 100 nM MG-132, 10 µM lactacystin or 10 µM leupeptin (all from Sigma-Aldrich, Darmstadt, Germany).
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