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4 protocols using cd45r b220 pe

1

Spleen Immune Cell Immunophenotyping

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Following perfusion, spleens were harvested and homogenised into a single cell suspension in phosphate buffered saline (PBS) using a 100 µm Falcon cell-strainer. Red blood cells were lysed using BD FACS Lysing Solution (cat#349202) and the remaining cells blocked with FACS buffer (phosphate buffered saline with 2% fetal bovine serum) and stained using fluorochrome-conjugated antibodies against IgM (IgM-APC, cat#550676, BD Biosciences) and CD45R/B220 (CD45R/B220-PE, cat#553090, BD Biosciences). Cells were run on a BD LSRFortessa SORP (BD Biosciences) flow cytometer and the data analysed with Flow Jo Version 10 software (FlowJo, LLC/Treestar). n = 6 for each genotype and treatment. Representative results are shown in figures.
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2

Isolation and Characterization of Murine Bone Marrow Cells

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Bone marrow was isolated from femurs and tibias of mice by flushing the marrow cavity with medium and passing the cell suspension through a cell strainer. After lysis of erythrocytes, bone marrow cells were incubated with Fc-blocking antibody (BD Pharmingen antimouse CD16/CD32, clone 2.4G2; BD Biosciences, San Jose, CA, USA), followed by staining with the following mix of antibodies: CD11b-fluorescein isothiocyanate, CD90.2-phycoerythrin (PE), CD45R/B220-PE, CD49b-PE, NK1.1-PE, Ly6G-PE, Ly6C-allophycocyanin-cyanine 7 (all BD Biosciences). Samples were acquired with a CyAn flow cytometer (Beckman Coulter Life Sciences, Indianapolis, IN, USA), and data analysis was performed with Kaluza Analysis Software (Beckman Coulter Life Sciences). The gating strategy we used is depicted in Additional file 2.
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3

Ovarian Cell Isolation and Characterization

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Single cell suspensions of ovary cells were prepared by modifying a method previously described (Oakley et al., 2010 (link)). Ovaries were collected from WT and Esr2-PgrKO mice at 6 and 9 h after hCG injection and dissociated by 2 mL of collagenase digestion solution containing 3.5 U of collagenase type I (17100–017; Invitrogen), 1000 U of deoxyribonuclease I (D4527; Sigma), and 40 mg of BSA (017K0723; Sigma) in H-199 media (12350–039; Life Technologies, Inc.) at 37°C for 30 min. Dissociated cells (1 × 106 cells) were washed and stained according to the manufacturer’s protocol with the following antibodies alone or in varying combinations: CD16/CD32 (Mouse BD Fc Block; 553142, BD Biosciences, San Jose, CA) CD45-PE/Cy7 (552848, BD Biosciences), CD11b-APC/Cy7 (557657, BD Biosciences), CD11c-PE/Cy5 (15-0114-82, eBioscience, San Diego, CA), I-A/I-E (MHCII)-FITC (562009, BD Biosciences), Ly6G-Horizon V450 (560603, BD Biosciences), Ly6C-Brilliant Violet 450 (128033, Biolegend, San Diego, CA), CD45R/B220-PE (553089, BD Biosciences), and CD8a-APC (553035, BD Biosciences). For surface marker staining, DPBS (pH 7.4) containing heat-inactivated FBS and < 0.09% sodium azide (554656, BD Biosciences) was used as staining buffer. Stained samples were analyzed by flow cytometry (BD LSR II; BD Biosciences). Data analysis was performed using FCS Express 6 (De Novo Software, Los Angeles, CA).
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4

Quantification of Osteoclast Precursors in Murine Bone Marrow

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Numbers of osteoclast precursors in the BM were determined with flow cytometry. Bone marrow was isolated from femurs and tibias of mice by flushing the marrow cavity with medium and passing the cell suspension through a strainer. After lysis of erythrocytes, bone marrow cells were incubated with Fc-blocking antibody (BD Pharmingen antimouse CD16/CD32, clone 2.4G2; BD Biosciences, San Jose, CA, USA), followed by staining with the following mix of antibodies: CD11bfluorescein isothiocyanate (FITC), CD90.2-phycoerythrin (PE), CD45R/ B220-PE, CD49b-PE, NK1.1-PE, Ly6G-PE, Ly6C-allophycocyanin-cyanine 7 (APC-Cy7), and F4/80-PE-Cy7 (all BD Biosciences). Samples were acquired with a Gallios flow cytometer (Beckman Coulter Life Sciences, Indianapolis, IN, USA).
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