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4 protocols using cd19 buv737

1

Immunophenotyping of AML Leukapheresis Samples

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Mononuclear cells from the peripheral blood of 36 patients with AML indicated at leukapheresis due to hyperleukocytosis at diagnosis were obtained by separation of leukapheretic products on Histopaque 1077 (Sigma, Prague, Czech Republic). The cells were resuspended in RPMI 1640 medium with 10% fetal calf serum and with antibiotics (100 U/mL penicillin, 100 µg/mL streptomycin), and aliquots were used for RNA isolation and for analysis of surface markers by flow cytometry. Additional analyses of PD-L1 transcripts were performed from cDNA samples, which had been taken for routine clinical analyses and cryopreserved. A written informed consent with the use of biological material for research purposes was obtained from all patients. The study was approved by the Ethics Committee of the Institute of Hematology and Blood Transfusion of the Czech Republic as a part of the research project 16-30268A (June 2015).
Antibodies used were the following: CD45-V450 (#560367), CD4-BUV395 (#564724), CD8-BUV395 (#563795), CD19-BUV737 (#564303), CD123-BUV395 (#564195), CD371(CLL-1)-BB515 (#565926), CD135(FLT3)-AlexaFluor647 (#563494), and CD34-BV786 (#743534) were from BD Biosciences (Prague, Czech Republic); CD38-PE (#1P-366-T100) from Exbio (Prague, Czech Republic); PD-1-APC (#17-2799-42) and PD-L1-PE-Cy7 (#25-5983-42) from Affymetrix, Inc. (San Diego, CA, USA).
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2

Multicolor Flow Cytometry of Islet Immune Cells

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Islets were isolated from NOD.CD11c-DTR-GFP mice as previously described. Islet samples were stained with the fluorescent-labeled antibodies CD45 BUV395 (BD), CD90.2 BUV737 (BD), CD19 BUV737 (BD), CD11c PE-Cy7, CD11b Alexa Fluor 647, XCR1 BV785, MHC-II Biotin (BD), Streptavidin Qdot605 (Invitrogen), rabbit α-MERTK (Abcam), and donkey α-rabbit BV421 (BioLegend).
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3

Phenotyping Leukemic Cells from AML Patients

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Primary cells from peripheral blood of AML patients with hyperleukocytosis were obtained by leukapheresis before therapy initiation. The leukapheretic products were diluted 10-fold in phosphate buffered saline (PBS), and the mononuclear cell fraction was separated using Histopaque-1077 (Sigma, #H8889). The cells were resuspended in RPMI 1640 medium with 10% fetal calf serum and with antibiotics (100 U/ml penicillin, 100 µg/ml streptomycin), and aliquots were used for analysis of surface markers by flow cytometry and for mRNA isolation.
The antibodies used were as follows: CD45-V450 (#560367), CD4-BUV395 (#564724), CD8-BUV395 (#563795), CD19-BUV737 (#564303), CD34-BV786 (#743534), and CD371-BB515 (#565926) from BD Biosciences; HLA-DR-FITC (#11-9952-42), TIM-3-APC (#17-3109-42), and PD-L2-APC (#17-5888-42) from eBioscience; CLIP-PE (sc-12725 PE) from Santa Cruz; PD-L1-PE (#1P-177-T100), CD47-FITC (#1F-225-T100), and CD38-PE (#1P-366-T100) from Exbio (Prague, Czech Republic). HLA class I antibody (Abcam, ab2217) was conjugated in house using the Lightning-Link Fluorescein Conjugation kit (#707-0010, Innova Biosciences).
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4

Isolation and Characterization of Peritoneal Immune Cells

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Peritoneal exudate cells (PECs) were isolated via lavage and single cell suspensions were briefly washed with PBS prior to red blood cell lysis using ACK lysis buffer. Prepared cells were stained with Zombie Yellow (BioLegend) to assess live status of cells. The following antibodies were used, though not necessarily all in the same panel: F4/80- BV785 (BioLegend; Clone BM8), CD115-BV421 (BioLegend; Clone AFS98), CD11c-BV421 (BD Bioscience; Clone HL3), CD115-BUV395 (BD Bioscience; Clone AFS98), CD19-BUV737 (BD Bioscience; Clone 1D3), CD226-PE (BD Bioscience; Clone TX42.1), CD11b-PE (eBioscience; Clone M1/70), MHCII (I-A/I-E)- PE/Cy7 (BioLegend; Clone M5/114.15.2), Ly6G-PE/CF594 (BD Bioscience; Clone 1A8), Ly6C-APC/eFluor780 (eBiosceince; Clone HK1.4), CD102-Alexa Fluor 647 (BioLegend; Clone 3C4 (mlC2/4)), CD102-Alexa Fluor 488 (eBioscience; Clone 3C4 [mlC2/4]), CCR2-FITC (BioLegend; Clone SA203G11), and CD11b-PErCP/Cy5.5 (BioLegend; Clone M1/70). Antibody cocktails were prepared in FACs staining buffer (phosphate-buffered saline, 1% FBS, 1% 0.5mM EDTA). Cellular fluorescence was measured using an LSRII Fortessa flow cytometer, and data were analyzed using FlowJo software (Tree Star).
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