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Goat anti mouse igg f ab 2

Manufactured by Jackson ImmunoResearch
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Goat anti-mouse IgG F(ab')2 is a secondary antibody preparation that specifically recognizes the F(ab')2 fragment of mouse immunoglobulin G (IgG) antibodies. It is produced by immunizing goats with mouse IgG and isolating the F(ab')2 portion of the resulting antibodies.

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8 protocols using goat anti mouse igg f ab 2

1

Isolation and Culture of Germinal Center B Cells

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B splenocytes were MACS-purified, collecting the negative fraction of CD43 Microbeads (Miltenyi Biotec). GC B cells were MACS-purified, collecting the negative fraction of CD43 Microbeads, CD38 (90) Biotin (Thermo Fisher Scientific), CD11c (N418) Biotin (Thermo Fisher Scientific) and anti-Biotin Microbeads (Miltenyi Biotec). Cells were cultured in RPMI 1640 (Corning) supplemented with 10% FBS (MilliporeSigma and Thermo Fisher Scientific), 1x Penicillin-Streptomycin, 1x MEM Nonessential Amino Acids (Corning), 1mM Sodium Pyruvate, 2mM GlutaMax, and 55 μM 2-Mercaptoethanol (Thermo Fisher Scientific). Cells were stimulated with the following reagents: 10μg/ml goat anti-mouse IgM F(ab’)2, 10μg/ml goat anti-mouse IgG F(ab’)2 (Jackson ImmunoResearch Labs), 10μg/ml goat anti-mouse κ F(ab’)2 (SouthernBiotech), 10ng/ml mouse rBaff (R&D Systems), 5μg/ml rat anti-mouse CD40 (1C10) and 10ng/ml mouse rIL-4 (Thermo Fisher Scientific). For in vitro-derived GC B cell cultures, B splenocytes were cultured on 40LB cells (3T3 fibroblasts expressing CD40L and secreting BAFF) with addition of 1ng/ml mouse rIL-4.
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2

Measuring Calcium Flux in iNK Cells

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iNK cells were stained with Indo-1 AM (Thermo Fisher) per the manufacturer’s protocol and co-stained with CD56 and a fixable live/dead indicator dye (Invitrogen). For stimulation through CD16, cells were pre-coated with an anti-CD16 antibody (3G8; BioLegend). Cells were run for 30 seconds on a FACS Fortessa X-30 (BD Biosciences) to obtain baseline measurements of free and bound calcium by measuring the shift in emission spectra. Then, goat anti-mouse IgG f(ab’)2 (Jackson ImmunoResearch Laboratories) was added as a crosslinking agent, and cells were immediately returned to the flow cytometer. Data was collected for an additional 4 minutes. For inonomycin stimulation, non-antibody coated iNK cells were first run unstimulated for 30 seconds followed by addition of ionomycin to achieve a final concentration of 1 μM, then run for an additional 4 minutes. Calcium flux was calculated based on the ratio of free and bound calcium over time.
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3

Immunofluorescence Analysis of Proteasome Components

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We used Rat anti-mouse LAMP1 (BD Bioscience, San Jose, CA), Rabbit anti-mouse α-Tubulin (Abcam), Rabbit anti-mouse γ-Tubulin (Abcam), Rabbit anti-mouse S4/19S RP (Abcam), Rabbit anti-mouse αβ/20S proteasome (Abcam), Rabbit anti-mouse α4/20S proteasome (Abcam), Mouse anti-mouse Ubiquitin P4D1 (Santa Cruz), Rabbit anti-mouse pSyk (Y525/526) (cellsignalling), Rabbit anti-mouse Syk (Abcam), anti-mouse β-actin (Abcam), Rat anti-mouse CD45R (BD Bioscience), Goat anti-mouse IgGFab2 (Jackson ImmunoResearch), Goat anti-mouse IgM Fab2 (Jackson ImmunoResearch). For secondary antibodies: Donkey anti-rabbit IgG-Alexa488 (LifeTech), Goat anti-rabbit IgG-Alexa546 (ThermoScientific), Donkey anti-rat IgG-Alexa546 (ThermoScientific), Donkey anti-rat-Alexa647 (ThermoScientific), Phalloidin-Alexa647 (ThermoScientific), DAPI (Abcam). Ovalbumin was purchased from Sigma-Aldrich, MG-132 and Epoxomicin were purchased from Merk (Millipore).
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4

Proteasome and Cytoskeletal Dynamics

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We used rat anti-mouse LAMP1 (BD Bioscience, #553792, 1:200), rabbit anti-mouse α-Tubulin (Abcam, ab#6160, 1:200), rabbit anti-acetyl-α-Tubulin (Lys40; cell signaling, #5335, 1:200), rabbit anti-mouse γ-Tubulin (Abcam, #Ab11317, 1:1000), rabbit anti-mouse S4/19S RP (Abcam, #Ab223765, 1:100), rabbit anti-mouse αβ/20S proteasome (Abcam, #Ab22673, 1:200), anti-mouse Ecm29 (Abcam, #Ab28666, 1:100), mouse anti-mouse Ubiquitin P4D1 (Santa Cruz, #Sc-8017, 1:1000), anti-mouse anti-actin (cloneC4, ImmunO, #691001), rabbit anti-mouse Arp2 (Cellsignal, #5614, 1:500), goat anti-mouse IgGFab2 (Jackson ImmunoResearch), rabbit anti-OVA (Sigma-Aldrich, #C6534, 1:500). For secondary antibodies: donkey anti-rabbit IgG-Alexa488 (LifeTech, 1:200), goat anti-rabbit IgG-Alexa546 (ThermoScientific, 1:200), Donkey anti-rat IgG-Alexa546 (ThermoScientific, 1:200), Donkey anti-rat-Alexa647 (ThermoScientific, 1:200), Phalloidin-Alexa-647 (Life Technology, #22287, 1:200), DAPI (Abcam). Ovalbumin and Nocodazole were purchased from Sigma-Aldrich, MG-132, and Epoxomicin were purchased from Merk (Millipore). Bsc2118-FL-Bodipy was kindly provided by Ulrike Kuckelkorn (Mlynarczuk-Bialy et al., 2014 (link)).
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5

Isolation and Culture of Germinal Center B Cells

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B splenocytes were MACS-purified, collecting the negative fraction of CD43 Microbeads (Miltenyi Biotec). GC B cells were MACS-purified, collecting the negative fraction of CD43 Microbeads, CD38 (90) Biotin (Thermo Fisher Scientific), CD11c (N418) Biotin (Thermo Fisher Scientific) and anti-Biotin Microbeads (Miltenyi Biotec). Cells were cultured in RPMI 1640 (Corning) supplemented with 10% FBS (MilliporeSigma and Thermo Fisher Scientific), 1x Penicillin-Streptomycin, 1x MEM Nonessential Amino Acids (Corning), 1mM Sodium Pyruvate, 2mM GlutaMax, and 55 μM 2-Mercaptoethanol (Thermo Fisher Scientific). Cells were stimulated with the following reagents: 10μg/ml goat anti-mouse IgM F(ab’)2, 10μg/ml goat anti-mouse IgG F(ab’)2 (Jackson ImmunoResearch Labs), 10μg/ml goat anti-mouse κ F(ab’)2 (SouthernBiotech), 10ng/ml mouse rBaff (R&D Systems), 5μg/ml rat anti-mouse CD40 (1C10) and 10ng/ml mouse rIL-4 (Thermo Fisher Scientific). For in vitro-derived GC B cell cultures, B splenocytes were cultured on 40LB cells (3T3 fibroblasts expressing CD40L and secreting BAFF) with addition of 1ng/ml mouse rIL-4.
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6

Antibody Characterization for Cell Analysis

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Anti-CD98 clone UM7F8, mIgG1 control antibody clone MOPC21, anti-mouse cKit clone ACK45 and anti-human NGFR clone C40–1457 were purchased from BD. Anti-Mouse CD90.1 Clone OX-7, anti-CD98 clone MEM108, and anti-mouse CD98 Clone RL388, were purchased from Biolegend. Anti-CD98 H300 was purchased from Santa Cruz Biotechnology. Anti-Ubiquitin clone P4D1 and anti-Met clone L41G3 were purchased from CST. Goat Anti-human IgG F(ab’)2, Goat Anti-mouse IgG F(ab’)2, and Goat anti-mouse IgG F(ab’) were purchased from Jackson. Humanized anti-human MET (LY2875358/Emibetuzumab) and non-cross competing MET antibody (LSN2148068) have been described previously and were provided by Eli Lilly(13 (link)). LSN2148068 was conjugated to DyLight650 using a DyLight microscale conjugation kit (Life Technologies) according to the manufacturer’s directions. Secondary reagents for western blot (Goat anti-mouse IgG-800, Goat anti-mouse IgG-680, Goat anti-rabbit IgG-800 and goat anti-rabbit IgG-680 were obtained from Licor.
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7

Nectin-4 and Nectin-1 Expression Analysis

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Confluent monolayers of cells were detached from 75 cm2 tissue culture flasks using Accutase cell dissociation buffer (Innovative Cell Technologies, San Diego, CA), washed, and labeled with mouse IgG, a mAb against Nectin-4 (MAB2659, clone #337516) or a mAb against Nectin-1 (MAB2880, clone #610835) using 2.5 μg mAb/106 cells in Flow Buffer [phosphate buffered saline (PBS) containing 2.5% newborn calf serum and 0.02% sodium azide] for 30 min at 4°C [18 (link)]. Cells were washed and incubated with goat anti-mouse IgG F(ab’)2 (Jackson ImmunoResearch, West Grove, PA), then washed again and incubated with streptavidin-allophycocyanin conjugate (Jackson ImmunoResearch, West Grove, PA) for 30 min each. Cells were washed and fixed in Flow Buffer containing 1% formaldehyde and analyzed in the University of Minnesota Flow Cytometry Resource with a BD Accuri™ C6 flow cytometer (BD Biosciences, San Jose, CA) using the Accuri™ software.
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8

Multiparametric Flow Cytometry for CAR19 and CD34

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Flow cytometry (BD LSRII) and cell sorting (FACSAria III) were performed using routine T cell panels (BD Biosciences Multitest 6 color BTNK antibodies) with the addition of goat anti-mouse IgG F(ab)2 (Jackson Immunoresearch) for CAR19 detection and mouse anti-human Qbend10 (Miltenyi Biotec) for human CD34 staining of RQR8.
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