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5 protocols using anti mouse igg1 pe

1

Comprehensive T-cell Signaling Antibody Panel

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Antibodies and reagents used for flow cytometry were: CD8-APC, Fixable viability stain 450, antiCD16/32 (eBiosciences); anti-rabbit-PE (Jackson Immunoresearch); anti-SLP76 (pY128), CD4-PE, CD25-FITC, CD8 FITC and anti-mouse IgG1-PE (BD Biosciences); CD4-PEVio770 (Miltenyi Biotec); CD3-BV421 (Biolegend); anti-pErk1/2 (pT202/pY204) (Cell signaling Technology). The following reagents were used for cell stimulation, immunoblotting or immunoprecipitation: anti-CD3-biontinylated, anti-CD28-biontinylated, anti-CD3ε, anti-CD28 (eBiosciences); streptavidin (Sigma); anti-pErk1/2 (pT202/pY204), anti-pPLCγ1 (pY783), anti-pp38 (pT180/pY182), anti-pJNK (pT183/Y185), anti-pAkt (pS473), anti-pSLP76 (pS376) (Cell Signaling Technology); anti-GADS (Santa Cruz Biotechnology Inc.); rabbit anti-SLP76 or goat-anti-SLP76 (Thermo Fisher Scientific); anti-β-tubulin (Chemicon); for anti-14-3-3 immunoblotting we used a mix of anti-pan 14-3-3 and anti-14-3-3ζ (Santa Cruz, Biotechnology Inc.).
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2

Flow Cytometric Measurement of Global DNA Methylation

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Flow cytometric measurement of global methylation was performed as described previously (Delaney et al., 2012 (link)). Briefly, 2.5 × 105 freshly harvested T cells were stained with FITC anti-CD3 Abs and PE-Cy5 anti-CD4, or isotypes, then fixed in Cytofix/Cytoperm (BD) and permeabilized using PBS supplemented with 0.1% saponin, 1% FBS, and 0.1% sodium azide. Cells were treated with RNase A to eliminate the potential for the detection of 5-methylcytidine in tRNA. Cells were treated with anti-5-methylcytidine (Acris Antibodies, San Diego, CA, USA), washed, then incubated with Anti-mouse IgG1-PE or isotype rat-IgG1κ (BD). Flow cytometry was performed immediately or within 24 h of permeabilization using a FACScaliber machine (BD). Results were analyzed with FCS Express software (de novo Software, Los Angeles, CA, USA).
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Global DNA Methylation Analysis in T Cells

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Flow cytometric measurement of global methylation was performed as described previously (Delaney et al., 2012 (link)). Briefly, 2.5 × 105 freshly harvested T cells were stained with FITC anti-CD3 Abs and PE-Cy5 anti-CD4, or isotypes, then fixed in Cytofix/Cytoperm (BD) and permeabilized using PBS supplemented with 0.1% saponin, 1% FBS, and 0.1% sodium azide. Cells were treated with RNase A to eliminate the potential for detection of 5-methylcytidine in tRNA. Cells were treated with anti-5-methylcytidine (Acris Antibodies, Germany), washed, then incubated with Anti-mouse IgG1-PE or isotype rat-IgG1κ (BD). Flow cytometry was performed immediately or within 24 h of permeabilization using a FACScaliber machine (BD). Results were analyzed with FCS Express software (De Novo Software).
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4

Splenic B Cell Isolation and CSR

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Isolation of splenic B cells from either IgκAIDyy1f/f or yy1f/f mice, deletion of YY1 by recombinant TAT-CRE treatment, LPS plus IL4 treatment, and measurement of CSR to IgG1, were performed as previously described [35 (link)]. Briefly, follicular B cells were purified from mouse spleen with anti-CD23-biotin (eBioscience) and streptavidin microbeads (MACS, Miltenyi Biotec), and conditional YY1 knock-out was performed ex vivo using TAT-CRE enzyme purified from bacteria. Cells were activated ex vivo with 10 μg/ml LPS (Sigma) plus 20 ng/ml IL-4 (Peprotech). Splenic B cells were stained with PE anti-mouse IgG1 (BD Pharmingen) and 7-amino-actinomycin D (Invitrogen) and isotype switching was measured by flow cytometry (dead cells stained with 7AAD were excluded from analysis). Flow cytometry was performed on a FACS Canto II machine, and data was analyzed using FlowJo software.
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5

Immunophenotyping of CD49f- and CD271+CD49f- Cells

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FACS sorted CD49f- cells or cultured CD271+CD49f- cells were stained with primary antibodies PE-conjugated CD271, PE-conjugated PDGFRB (1.25 μg/ml, mouse IgG1; R&D Systems), PE-conjugated SUSD2, (W5C5 clone, 1:20, mouse IgG1; Biolegend), APC-conjugated CD90 (25 μg/ml, mouse IgG1κ, BD Pharmingen), CD146 (1:2, supernatant, clone CC9, mouse IgG2a; donated by Prof David Haylock, CSIRO, Clayton, Victoria, Australia), CD73 (10 μg/ml, mouse IgG1κ; BD Pharmingen) or CD105 (10 μg/ml, mouse IgG1ƙ; BD Pharmingen). The CD146 samples were incubated with secondary antibody fluorescein isothiocyanate (FITC) conjugated anti-mouse IgG2a (5 μg/ml, clone R19-15; BD Pharmingen). CD73 and CD105 samples were incubated with secondary antibody PE-anti-mouse IgG1 (2 μg/ml, clone A85-1, BD Pharmingen). Isotype matched controls or unlabelled controls were included for each antibody and used to set the electronic gates on the flow cytometer. Cells were then incubated with Sytox Blue and analysed by FACS Canto II analyser (BD Biosciences). FACS data were analysed by FACSDiva software (BD Biosciences).
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