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5 protocols using igm 2 41 apc

1

Immunization and BrdU Incorporation Assay

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Mice were immunized i.p. or i.v. with 100μl of PBS-washed citrated SRBCs (Colorado Serum Company) or i.p. with 50μg NP20-CGG (Biosearch Technologies) plus Imject Alum Adjuvant (ThermoFisher Scientific) in 100μl PBS. For SRBC-specific antibody titers, serum was collected on indicated days and bound to SRBCs and detected with IgM (II/41) APC (Thermo Fisher Scientific) and IgG1 (A85–1) PE (BD Biosciences) by flow cytometry. For BrdU pulse experiments, mice were injected i.p. with 2mg BrdU in 200μl PBS and sacrificed 2 h later. Incorporation of BrdU was detected using the BrdU Flow Kit (BD Biosciences) according to manufacturer’s instructions and BrdU (BU20A) PE (Thermo Fisher Scientific).
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2

Multiparameter Flow Cytometry Analysis

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Single cell suspensions from tissues were ACK lysed and stained in 1% FBS in PBS containing 0.05% sodium azide. Cells were gated according to size and granularity based on FSC-A and SSC-A. Doublets were excluded by FSC-A versus FSC-H gating. Non-antigen-specific binding was blocked with CD16/CD32 (2.4G2) (BD Biosciences). The following antibodies were used for staining: B220 (RA3–6B2) APC-eFluor780, IgM (II/41) APC, IgD (11–26c) FITC, CD86 (PO3.1) PE, hCD2 (RPA-2.10) APC (Thermo Fisher Scientific), CXCR4 (L276F12) APC, CD86 (GL1) PerCP Cy5.5 (BioLegend), κ (187.1) FITC, CD19 (1D3) APC-Cy7, FAS (Jo2) PE-Cy7, GL7 FITC and IgG1 (A85–1) FITC (BD Biosciences). Cell proliferation was analyzed using the eBioscience Cell Proliferation Dye eFluor670 (Thermo Fisher Scientific). Samples were acquired on a FACSCanto (BD Biosciences) and analyzed with Flowjo (Becton, Dickinson and Company).
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3

Multiparameter Flow Cytometry Analysis

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Single cell suspensions from tissues were ACK lysed and stained in 1% FBS in PBS containing 0.05% sodium azide. Cells were gated according to size and granularity based on FSC-A and SSC-A. Doublets were excluded by FSC-A versus FSC-H gating. Non-antigen-specific binding was blocked with CD16/CD32 (2.4G2) (BD Biosciences). The following antibodies were used for staining: B220 (RA3–6B2) APC-eFluor780, IgM (II/41) APC, IgD (11–26c) FITC, CD86 (PO3.1) PE, hCD2 (RPA-2.10) APC (Thermo Fisher Scientific), CXCR4 (L276F12) APC, CD86 (GL1) PerCP Cy5.5 (BioLegend), κ (187.1) FITC, CD19 (1D3) APC-Cy7, FAS (Jo2) PE-Cy7, GL7 FITC and IgG1 (A85–1) FITC (BD Biosciences). Cell proliferation was analyzed using the eBioscience Cell Proliferation Dye eFluor670 (Thermo Fisher Scientific). Samples were acquired on a FACSCanto (BD Biosciences) and analyzed with Flowjo (Becton, Dickinson and Company).
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4

Multicolor Immunofluorescence Analysis of Mouse Spleen

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Spleens embedded in Tissue TEK O.C.T. (Sakura Finetek) were sectioned on a Microtome Cryostat HM 505 E (Microm). Sections were fixed with acetone and blocked with 5% FBS in PBS. Florescent images were acquired on an Axio Imager.M1 (Zeiss) microscope equipped with an Orca-ER (Hamamatsu) camera. SlideBook (3i) was used as the imaging software. Gimp (GNU Image Manipulation Program) was used for image editing. The following antibodies were used: B220 (RA3-6B2) APC, IgM (II/41) APC, IgD (11-26c) PE (Thermo Fisher Scientific), Moma1 Biotin (Abcam), and Streptavidin-Cy3 (Jackson ImmunoResearch). For immunohistochemical analysis, spleens were formalin-fixed and paraffin-embedded. B220 (RA3-6B2) Biotin (BD Biosciences) and Myc (Y69) (Abcam) and were used as primary antibodies and horseradish-peroxidase-coupled Streptavidin or anti-Rabbit IgG were used as secondary antibodies. TUNEL staining was performed by using the ApopTag Peroxidase In Situ Apoptosis Detection Kit (MilliporeSigma) according to the manufacturer’s protocol.
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5

Immunization and BrdU Incorporation Assay

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Mice were immunized i.p. or i.v. with 100μl of PBS-washed citrated SRBCs (Colorado Serum Company) or i.p. with 50μg NP20-CGG (Biosearch Technologies) plus Imject Alum Adjuvant (ThermoFisher Scientific) in 100μl PBS. For SRBC-specific antibody titers, serum was collected on indicated days and bound to SRBCs and detected with IgM (II/41) APC (Thermo Fisher Scientific) and IgG1 (A85–1) PE (BD Biosciences) by flow cytometry. For BrdU pulse experiments, mice were injected i.p. with 2mg BrdU in 200μl PBS and sacrificed 2 h later. Incorporation of BrdU was detected using the BrdU Flow Kit (BD Biosciences) according to manufacturer’s instructions and BrdU (BU20A) PE (Thermo Fisher Scientific).
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