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Anti human cd45 antibody

Manufactured by BD
Sourced in United States

The Anti-human CD45 antibody is a laboratory reagent used to detect and quantify CD45-positive cells in various research applications. CD45 is a transmembrane protein tyrosine phosphatase expressed on the surface of most hematopoietic cells, making it a useful marker for the identification and analysis of different cell types. This antibody can be used in flow cytometry, immunohistochemistry, and other immunoassays to study the presence and distribution of CD45-expressing cells.

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7 protocols using anti human cd45 antibody

1

Efficacy of VS-4718 in Xenograft AML Model

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Animal experiments were performed in accordance with a protocol approved by the Institutional Animal Care and Use Committee at MDACC. Molm14 cells (0.6 × 106) stably expressing a dual luciferase-GFP reporter (Molm14-GFP/Luc) were injected via the tail vein into NOD/SCID IL2Rγ Null-3/GM/SF (NSGS) mice (Jackson Laboratory, Bar Harbor, ME). Once engraftment was confirmed by the IVIS-200 noninvasive bioluminescence in vivo imaging system (Xenogen, Hopkinton, MA), mice were either untreated or treated with VS-4718 twice a day at 75 mg/kg via oral gavage (n = 10/group) for 16 days. Leukemia burden was monitored by IVIS in vivo imaging, flow cytometric measurement of human CD45 cells (anti-human CD45 antibody, BD Biosciences) in mouse PB, and immunohistochemical staining for human CD45+ cells in mouse tissues (stained with anti-human CD45 antibody and visualized by Biotin-free Tyramide Signal Amplification System, both from Dako, Carpinteria, CA). Mouse survival was recorded.
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2

Leukemia xenograft mouse model

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Xenograft mice models of human cancer cell lines were developed using NOG mice. For leukemia mice models, 2.5 × 106 cells/body of MV4-11 cells were intravenously injected. Peripheral blood (PB) was then collected every week and chimerism was checked by flow cytometer using anti-human CD45 antibody (BD Biosciences). One week after injection, mice were treated with PI polyamides (320 μg/kg body weight, twice a week IV injections) or with the equivalent amount of dimethyl sulfoxide (DMSO).
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3

Evaluating Leukemia Treatments in PDX Models

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Animal experiments were performed in accordance with a protocol approved
by the Institutional Animal Care and Use Committee at MD Anderson. PDX cells (2
× 106) were injected via tail vein into 40 male (16–20
or 5–9 wk) NSGS mice (Jackson Laboratory, Bar Harbor, ME). Engraftment
was confirmed by flow cytometry measuring human CD45+ cells
(anti-human CD45 antibody, BD Biosciences) (average 1%) in mouse peripheral
blood (PB). The mice were treated with vehicle only, VS-4718 twice daily (75
mg/kg) (8 ), ABT-199 daily (100 or 50
mg/kg), or the combination via oral gavage (n = 10/group) for 29 or 27 d.
VS-4718 was suspended in 5% sucrose. ABT-199 was dissolved in 60% PHOSAL 50PG
(LIPOID, Germany), 30% polyethylene glycol 400 (Spectrum Chemical, Gardena, CA),
and 10% 200-proof ethyl alcohol (Pharmco-Aaper, Brookfield, CT).
The leukemia progression was monitored weekly by flow cytometric
measurement of human CD45+ cells in mouse PB. At the end of the
treatments, BM cells were collected from one of the PDX models (PDX1, Supplemental Table 1,
#14) (n = 3 per treatment group) for RNA-sequencing analysis and spleen were
harvested from both PDX models (n = 3/group). Mice were monitored daily and
survival was recorded.
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4

Multiparameter Flow Cytometry Analysis

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Anti-mouse CD45, Ly6G, Ly6C and F4/80 antibodies were purchased from ThermoFisher (Waltham, MA, USA). Anti-CD11b antibody was from Tonbo Biosciences (San Diego, CA, USA). Anti-human CD45 antibody was from BD Bioscience (San Jose, CA, USA). Cy5 fluorescent dye-conjugated T1 and scramble aptamers were ordered from Integrated DNA Technologies (Coralville, IA, USA).
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5

Antibody-based Cell Identification

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Anti-human CD45 antibody and anti-mouse CD45 antibody were from BD Biosciences (San Jose, CA).
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6

Analyzing Leukemia Burden in CCRF Xenografts

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To assess the level of leukemia burden in the mice transplanted with CCRF, cells from BM, spleen, liver, and PB were lysed with ACK Lysing Buffer (Gibco) and then buffered with PBS and 1% FBS before analysis. Flow cytometry quantification of hCD45+ cells in CCRF xenograft models was performed using an anti–human CD45 antibody (BD Biosciences). All data were analyzed with FlowJo program (version 10).
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7

Porcine and Human Immune Cell Engraftment Tracking

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Adoptively transferred PBMC were followed in recipient mice in blood collected on days 14 and 28. fluorescence-activated cell sorter (FACS) analysis was performed using anti-porcine (Serotec, Raleigh, NC) (Figure 4A andB) or anti-human CD45 antibody (BD, Heidelberg, Germany) (Figure 7A andB), and anti-mouse CD45 antibody (BD, Franklin Lakes, NJ). Successful engraftment, as required for inclusion into final analysis, was assumed when more than 2% of the circulating lymphocytes were porcine (Figure 4B) or human CD45 + (Figure 7B), respectively. 8
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