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8 protocols using anti cd86 fitc

1

Comprehensive Immune Cell Phenotyping

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Mice were anesthetized with tribromoethanol, and perfused via the left
ventricle with cold PBS. Brains were then harvested and cells were collected
using the Miltenyi Neural dissociation kit (San Diego, CA). Cells were then
blocked with Anti CD16/CD32 (15 min, 4 °C). Cells were then stained with
the following monoclonal antibodies at 4 °C for 45 min: Anti-CD11b PE,
anti-CD8 Pac Blue, anti-CD19 Percp-cy5.5, anti-CD4 Pe-cy7, anti CD45
PE-Dazzle594, anti-CD86 FITC, anti-CD45 Alexa Flour 700, anti-Ly6G PE,
anti-CD11c Pacific Blue, anti-MHC II Percpcy5.5, anti-CD11b Bv650 all purchased
from Biolegend (San Diego, CA), and anti-Ly6C PEtxRed (BD Biosciences, San Jose,
CA), anti-F4/80 APC-cy7, anti-O4 Alexa Flour 488 (R & D Systems),
anti-ASCA-2 APC (Miltenyi), anti-CD3 V500 (BD Biosciences), and anti-CD192 APC
(R & D Systems, Minneapolis, MN). Cells were then fixed, permeabilized,
(Fixation Buffer and Permeabilization wash buffer; Biolegend) and stained with
intracellular stains anti-CD68 PEcy7 (Biolegend), anti-NeuN Alexa Flour 700
(Novus Biologicals, Littleton, CO) (4 °C 45 min). Cells were then washed
twice and resuspended. Samples were run on an LSRFORTESSA flow cytometer (BD
Biosciences). Data was analyzed with Flowjo v10.1 (Flowjo, Ashland, OR).
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2

Immune Cell Profiling of Bladder Tissues

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Three to five bladder tissues of each group were dissociated in Liberase TL (0.5 mg/mL, Merck#05401020001) and dispase II (20 mg/mL, Merck#D4693) in HEPES-buffer saline (sigma) for 120 min at 37 °C. Dissociated tissues were filtered through 70 mm mesh and resuspended in HBSS buffer with 2% PFA. Cells were centrifuged at 500g for 3 min and resuspended in HBSS buffer. Immune cells were separated by 40% and 80% Percoll solution before flow cytometry. Surface antigens were stained and fixated and permeabilized, then stained intracellular proteins. Antibodies used for staining: anti-CD45.2-AF700 (1:200, Biolegend# 109822), anti-CD11b-APC-CY7 (1:200, Biolegend# 101226), anti-Ly-6G-FITC (1:200, Biolegend# 127606), anti-F4/80-PE (1:200, Biolegend# 157304), anti-CD86-FITC (1:200, Biolegend# 105110), anti-CD206-APC (1:200, Biolegend# 141708). We excluded dead cells by using a live cell stain (AquaTM Fixable viability, Biolegend). It was centrifuged at 500g for 3 min and resuspended in HBSS buffer. Flow cytometry was conducted on Gallios flow cytometry (Beckman). Data were analyzed by FlowJo software.
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3

Multiparametric Immune Profiling

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We used the following human fluorescent monoclonal antibodies markers: anti‐CD56‐FITC (Bio‐legend), anti‐CD161‐PE (Bio‐legend), anti‐CD56‐BV421 (Bio‐legend), anti‐CD86‐FITC (Bio‐legend), anti‐GranzymeB‐PE/Cyanine7 (Bio‐legend), anti‐perforin‐APC/Cy7(Bio‐legend), anti‐Ki67‐AlexaFluor™700 (Bio‐legend), anti‐FasL‐PerCP/Cy5.5 (Bio‐legend), anti‐HLA‐DR‐FITC (Bio‐legend), anti‐TNF‐α‐PE/Cyanine7 (Bio‐legend), and anti‐IFN‐γ‐APC/Cy7 (Bio‐legend). The isotype control antibodies used in our study were as follows: Mouse IgG 1κ‐FITC (Bio‐legend), Mouse IgG1κ‐PE (Bio‐legend), Mouse IgG2bκ‐BV421 (Bio‐legend), Mouse IgG1κ‐PE/Cyanine7 (Bio‐legend), Mouse IgG2ακ‐Alexa Fluor™700 (Bio‐legend), Mouse IgG1κ‐PerCP/Cy5.5 (Bio‐legend), and Mouse IgG2α κ‐APC/Cy7 (Bio‐legend).
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4

Multiparametric Flow Cytometry Analysis

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EWS cell lines, human macrophages (M0, M1, and M2-like) and hBM-MSCs were analyzed by flow cytometry (FACSCanto II cytometer; Becton Dickinson) using the following antibodies: anti-CD99-FITC (3B2/TA8)(# 11–0997–42, eBioscience, RRID:AB_2016685), anti-CD14-FITC (#F0844, Dako), anti-CD68-FITC (#562117, BD Pharmingen), anti-CD80-PE (#5572227, BD), anti-CD86-FITC (#374204, BioLegend), anti-CD163-PE/Cy7(#25–1639–4, Affymetrix), anti-CD206-APC (#561763, BD), anti-CD47-PE (REA 220)(#130–123–754, Miltenyi Biotech, RRID:AB_2819520), and anti-calreticulin-PE (EPR3924) (LSC105731, LSBio-Life Span, RRID:AB_2069806). Detection and quantification of PS-positive cells was performed by flow cytometric analysis of annexin-V-FITC/PI-labeled cells (MEBCYTO Apoptosis Kit #4700, Medical & Biological Laboratories). Data are expressed as % positive cells or median fluorescence intensity (MFI). Flow samples were properly analyzed using FCS Express 7.18.0025 software (RRID:SCR_016431).
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5

Tumor Immune Profiling by Flow Cytometry

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Tumors were collected 3 days after last radiation fraction then were dissociated in DMEM supplemented with 1 mg/ml Collagenase IV (Solarbio) and 1 μl/ml DNase I (Solarbio) at 37 °C for one hour. Single-cell suspensions were collected after filtering digested tissues with 40-um filter and washed with PBS supplemented with 2% FBS. Subsequently, cell surface and intracellular markers were stained with the following fluorochrome-conjugated antibodies: anti-CD45 BV421 (Cat#: 103,134), anti-CD11b PE (Cat#: 101,207), anti-F4/80 AF700 (Cat#: 123,129), anti-CD86 FITC (Cat#: 105,109), anti-CD206 APC (Cat#: 141,708), anti-CD4 BV510 (Cat#: 100,553), anti-CD8a AF700 (Cat#: 100,729) from Biolegend. For surface staining, all samples were stained with antibodies at 4 °C for 30 min; for intracellular staining, cells were fixed and permeabilized with BD Cytofix/Cytoperm (Cat#: 554,714) then stained according to the manufacturer’s instructions. Analysis of stained cells was performed using a CytoFlex cytometer (Beckman Coulter) and CytExpert software.
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6

Multimodal Nanomaterial-Based Vaccine Delivery

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Tetraethyl orthosilicate (TEOS), ethanol, ammonia, potassium permanganate (KMnO4), and sodium carbonate (Na2CO3) were purchased from Macklin (China). Ovalbumin (OVA) was obtained from Sigma (USA). OVA-Cy5.5 was obtained from QIYUE BIOLOGY(China). DNA single strands A50 and T20 were brought from Tsingke Biotech (China). Enhanced CCK-8 kit, Lyso-Tracker green fluorescent dye, 4’,6-diamidino-2-phenylindole (DAPI) and BCA protein assay kit were purchased from Beyotime (China). Roswell Park memorial institute (RPMI) 1640 culture medium, dulbecco’s modified eagle medium (DMEM), and fetal bovine serum (FBS) brought from Procell (China). Anti-CD11c-APC, anti-MHC II-PE, anti-MHC I-PE, anti-CD80-Cy5.5, anti-CD86-FITC, FITC-anti-CD4, Cy5.5-anti-CD8a, PE-anti-CD44, APC-anti-CD62L and APC-anti-CD3 antibodies were supplied by BioLegend (USA). Enzyme-linked immunosorbent assay (ELISA) Kits for INF-γ, TNF-α, IL-4, and IL-6 were also purchased from BioLegend (USA). In addition, all animal experiments were determined eligible for the study and were approved by the Ethics Committee of Jinan University.
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7

Phenotypic Characterization of THP1 Cells

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First, THP1 cells were treated as mentioned above (cell lines and cell culture), then digested with accutase, collected, washed for three times with PBS. Then incubated with antibody mixture for 30 min (Brilliant Violet 421™ anti-CD163, BioLegend, 333611; FITC anti-CD86, BioLegend, 374203), washed with PBS again. A Bioscience FACScan Flow Cytometry System (BD Biosciences, Franklin Lake, NJ, USA) was used to detect markers expression.
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8

Flow Cytometry Protocol for Mtb Stimulation

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For flow cytometry, we used FITC anti-T-bet, PE anti-CD8, PE/Cy7 anti-Eomes, APC anti-CD4, APC anti-IFN-γ, APC anti-CD160, APC anti-2B4, APC anti-PD1, APC anti-CXCR5, APC anti-CXCR3, APC anti-CCR7, APC anti-IL12Rβ2, FITC anti-CD3, PE anti-CD11b, APC-anti-MHC II, FITC-anti-CD80, FITC-anti-CD86 (all from BioLegend). We used γ-irradiated Mtb H37Rv for in vitro stimulation assays (BEI Resources).
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