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3 protocols using nanog antibody

1

Immunophenotyping of Human iPSCs

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AP staining was performed using the Alkaline Phosphatase Detection Kit (Sigma) according to the manufacturer’s instructions. For immunofluorescence assay, human iPSCs were adhered on slide chambers (Nunc) containing MEFs, fixed with 4% paraformaldehyde (Sigma) for 30 minutes at RT and permeabilized for 10 minutes with 1% TritonX-100 (Sigma). Cells were blocked with 5% BSA for 30 minutes at RT and incubated for one hour at RT or o/n at 4°C with NANOG antibody (Abcam), SOX2 (R&D), SSEA-1 (Chemicon), SSEA-4 (Chemicon), TRA1-60 (Chemicon) and TRA1-81 (Chemicon) diluted in PBS/TBS with 1% BSA. FITC- or Cy3-conjugated secondary antibodies (Sigma) diluted in the same solution was incubated for 1–1.5 hours at RT. Nuclei were counterstained with 1:4 dilution of DAPI mounting medium (Vector Labs). Samples were visualized under an inverted fluorescence microscope.
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2

Immunofluorescent Analysis of Pluripotency Markers

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Cells and blastocysts were plated on 0.1% gelatin-coated chamber slides (Thermo Fisher Scientific), treated as indicated, and then fixed with 3.7% formaldehyde diluted in PBS for 30 minutes. The slides were permeabilized with 0.1% Triton X-100 diluted in PBS, blocked with 10% BSA diluted in PBS, and incubated with an Oct3/4 antibody (Santa Cruz Biotechnology) and a Nanog antibody (Abcam) diluted in 5% BSA in PBS at a 1:200 dilution, for 2 hours. The slides were washed with PBS, and then were incubated with an anti-mouse IgG-Alexa 488 conjugate antibody (Thermo Fisher Scientific) and an anti-rabbit IgG-Alexa 548 conjugate antibody (Thermo Fisher Scientific) diluted in 5% BSA in PBS at a 1:400 dilution, for 1 hour. The slides were again washed with PBS and visualized by brightfield and fluorescent microscopy. All images were captured using IPLABS software (BD Biosciences) and processed using ImageJ software.
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3

Stem Cell Differentiation Protocol

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Fentanyl citrate was obtained from Northeast Pharmaceutical Group (China). The sources of reagents were as follows: Sox2, Oct4, N-cadherin, Vimentin, E-cadherin, β-catenin, GSK-3β, CD44, Cyclin D1, and GAPDH antibody (Proteintech, China); Nanog antibody (Abcam, USA); FUT8, c-Jun and VEGF antibody (Santa Cruz, USA); Lens culinaris agglutinin (LCA) Lectin, binding of α1, 6-fucosylation epitope. (Vector Laboratories, USA); p-GSK-3β (Ser9) antibody (Elabscience, China); LGK-974 (inhibitor of Wnt ligands) (Selleck, USA).
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