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16 protocols using anti cd3 clone ucht1

1

Activation of T Cells by Antigen-Presenting Cells

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TRuC-T and CAR-T cells were co-cultured overnight with CD19+ Nalm6-LUC target cells or CD19 K562 target cells at 1:1 ratio in triplicates. Alternatively, CH7C17 cells were co-cultured with DapDR1-ICAM1 cells loaded with different amounts of the HA306–318 peptide. T cell activation markers were analyzed using anti-human CD25 (clone BC96) (eBioscience, San Diego, CA), anti-human CD69 (clone FN50) and anti-CD3 (clone UCHT1) (BD Biosciences, San Jose, CA).
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Analyzing Immune Cell Populations

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Cryopreserved PBMCs were first stained with fluorescently labeled anti-CD3 (clone UCHT1) and anti-CD19 (clone SJ25C1; both from BD Biosciences). Afterward, cells were fixed and permeabilized with the FoxP3 staining kit (eBioscience), according to the manufacturer’s instructions, and incubated with fluorescently labeled anti-IKAROS (clone R32-1149; BD Biosciences).E4 (link) Cells were acquired on a FACSCanto II flow cytometer (BD Biosciences). Data were analyzed with FlowJo software (version X; TreeStar).
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3

Assessing T-cell Responses to Dendritic Cells

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In the MLR assay, monocyte-derived dendritic cells (MoDCs) with or without p38-MAPK inhibitor (SB203580; Cell Signaling, Danvers, MA, USA) treatment were cocultured with allogeneic CD4+ or CD8+ T cells for 5 days with concurrent stimulation of 1 μg/mL anti-CD3 (clone UCHT1; BD Biosciences). T-cell proliferation was characterized by flow cytometry as the percentage of cells exhibiting carboxyfluorescein succinimidyl ester (CFSE) fluorescence dilution.
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4

Tumor-Induced T Cell Metabolism Modulation

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Human peripheral blood T cell subsets (106/ml) were activated with anti-CD3 (clone UCHT1, 2.5 μg/ml) and anti-CD28 (clone CD28.2, 1.25 μg/ml) antibodies (BD Bioscience) for 3–5 days, as indicated in the figure legends. To obtain tumor medium, primary ovarian cancer cells were cultured for 3 days, and subsequently were frozen and thawed 5 times along with the culture medium. The cancer cell culture supernatant was obtained through centrifugation (20,000g, 1 h, 4°C), and used to culture T cells with or without glucose (2 mg/ml, Sigma Aldrich) supplementation for 16–24 h. To obtain normal medium containing different concentrations of glucose, normal medium without glucose (Invitrogen) was supplemented with 1 or 5 mg/ml glucose. Chemical inhibitors of metabolic pathways, Notch signaling or EZH2 were added as indicated in figure legends. Total numbers of viable cells at the endpoint of experiments were 1–2 × 106 cells.
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5

Tumor-Induced T Cell Metabolism Modulation

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Human peripheral blood T cell subsets (106/ml) were activated with anti-CD3 (clone UCHT1, 2.5 μg/ml) and anti-CD28 (clone CD28.2, 1.25 μg/ml) antibodies (BD Bioscience) for 3–5 days, as indicated in the figure legends. To obtain tumor medium, primary ovarian cancer cells were cultured for 3 days, and subsequently were frozen and thawed 5 times along with the culture medium. The cancer cell culture supernatant was obtained through centrifugation (20,000g, 1 h, 4°C), and used to culture T cells with or without glucose (2 mg/ml, Sigma Aldrich) supplementation for 16–24 h. To obtain normal medium containing different concentrations of glucose, normal medium without glucose (Invitrogen) was supplemented with 1 or 5 mg/ml glucose. Chemical inhibitors of metabolic pathways, Notch signaling or EZH2 were added as indicated in figure legends. Total numbers of viable cells at the endpoint of experiments were 1–2 × 106 cells.
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6

Whole Blood Flow Cytometry Assay

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A whole blood flow cytometry technique was employed as previously described [47 (link)]. Whole-blood samples (200ul) were stained at room temperature for 20 minutes. The following directly conjugated monoclonal antibodies (mAbs) were used: anti-CD3 (clone UCHT1, BD Biosciences), anti-CD4 (clone L-200, BD Biosciences), anti-CD8 (clone SK1, BD Biosciences), anti-CD27 (clone L128, BD Biosciences), anti-CD38 (clone LS-198, Beckman Coulter), anti-CD45RA (clone AbB11, Beckman Coulter) and anti-HLA-DR (clone L243, Biolegend). Red cells were lysed and fixed in FACS lysing solution (BD Biosciences) for 10 minutes in the dark, washed twice in FACS buffer (phosphate-buffered saline (PBS) containing 2% bovine serum albumin and 0.1% NaN3), and fixed with 1% formalin in PBS. Cells were acquired on an LSR-II flow cytometer (BD Biosciences).
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7

Isolation and culture of cancer cell lines and T cells

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A20, JeKo-1, Mino, Val, Maver-1 and Lewis lung carcinoma (LLC) cells were obtained from American Type Culture Collection (ATCC, USA). Mycoplasma testing was performed regularly (every 2 months) using Mycoplasma PCR detection kit (ABM, Canada). The number of passages between thawing and use in the described experiments ranged between two and five. Cells were cultured in RPMI-1640 medium supplemented with 15% fetal bovine serum, 100 U/mL penicillin, 100 μg/mL streptomycin, 2 mM l-glutamine, 25 mM HEPES, 100 μM nonessential amino acids, and 1 mM sodium pyruvate (Lonza).
Total CD3+ T cells were isolated from PBMCs derived from CLL patients by positive selection kit (Invitrogen, USA) and cultured with 0.5 μg/mL plate-bound anti-CD3 (clone UCHT1) and 0.5 μg/mL soluble anti-CD28 (clone CD28.2; BD Biosciences).
Pevonedistat (TAK924) was provided by Takeda Development Center Americas, Inc.
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8

Whole Blood Flow Cytometry Method

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A whole blood flow cytometry technique was employed as previously
described [47 (link)]. Whole-blood samples
(200ul) were stained at room temperature for 20 minutes. The following directly
conjugated monoclonal antibodies (mAbs) were used: anti-CD3 (clone UCHT1, BD
Biosciences), anti-CD4 (clone L-200, BD Biosciences), anti-CD8 (clone SK1, BD
Biosciences), anti-CD27 (clone L128, BD Biosciences), anti-CD38 (clone LS-198,
Beckman Coulter), anti-CD45RA (clone AbB11, Beckman Coulter) and anti-HLA-DR
(clone L243, Biolegend). Red cells were lysed and fixed in FACS lysing solution
(BD Biosciences) for 10 minutes in the dark, washed twice in FACS buffer
(phosphate-buffered saline (PBS) containing 2% bovine serum albumin and
0.1% NaN3), and fixed with 1% formalin in PBS. Cells
were acquired on an LSR-II flow cytometer (BD Biosciences).
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9

Analyzing Immune Cell Populations

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Cryopreserved PBMCs were first stained with fluorescently labeled anti-CD3 (clone UCHT1) and anti-CD19 (clone SJ25C1; both from BD Biosciences). Afterward, cells were fixed and permeabilized with the FoxP3 staining kit (eBioscience), according to the manufacturer’s instructions, and incubated with fluorescently labeled anti-IKAROS (clone R32-1149; BD Biosciences).E4 (link) Cells were acquired on a FACSCanto II flow cytometer (BD Biosciences). Data were analyzed with FlowJo software (version X; TreeStar).
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10

Suppressor T Cell Functional Assay

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AutoMACS-sorted CD4+CD25+: “suppressor” T cells were cocultured in triplicate wells with autologous CD4+CD25− “responders” (60,000 cells/well) in 96-well plates at suppressor/responder ratios of 1:0, 1:1, 0.5:1, 0.25:1, 0.125:1, and 0:1 for 3 days with media alone, 2 μg/ml phytohemagglutinin (PHA; Sigma Chemical Co.), or 0.04 μg/ml anti-CD3 (clone UCHT1; BD Pharmingen) with 2 μg/ml anti-CD28 (clone CD28.2; BD Pharmingen) before 16 h of [3H]thymidine (1 μCi/well) uptake as previously described (7 (link), 33 (link), 36 (link)). Proliferation was expressed as a stimulation index (SI): the mean cpm in stimulated wells divided by the mean cpm in unstimulated wells. T cell proliferation in each coculture was normalized by proliferation in CD4+CD25− T cells alone and compared to the calculated percentage of FoxP3+CD4 T cells in each coculture condition, based on %FoxP3+ cells in CD4+CD25− and CD4+CD25+ cell subsets determined by FACS.
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