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2 protocols using ab16046

1

Co-Immunoprecipitation Assay Protocol

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Co-IP assays were performed by transfecting HEK-293T cells with the indicated plasmids using lipofectamine™ 2000 (Invitrogen). After 48 hours, cells were harvested. Cell extracts were subjected to immunoprecipitation with either the anti-Myc antibody (1/2000, Roche, 11667149001), anti-His (1/2000, GenScript, A00174) or anti-Flag (1/2000, Agilent Technologies, 200472) antibody as indicated for overnight at 4°C. The antibody was coupled to protein A/G PLUS-Agrose (Santa Cruze, sc-2003). The immunoprecipitates were washed eight times with washing buffer and analyzed by SDS-PAGE and immunoblotting with antibody as indicated. For in vivo analysis, Nuclear extracts from E13.5 limb were immunoprecipitated with anti-Foxp1 antibody (Millipore, ABE68), anti-Foxp2 antibody (Abcam, ab16046) or IgG (Santa Cruze, sc-2027), and then blotted with anti-Foxp1 (1/1000, Millipore, ABE68), anti-Foxp2 (1/2000, Abcam, ab16046), anti-Foxp4 antibody (1/1000, Milipore, ABE74) and anti-Runx2 antibody (1/1000, Santa Cruze, sc-10758) as indicated.
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2

Immunohistochemical Analysis of Mouse Lung Development

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Lungs from wild type mouse embryos from E11 till E18 were dissected and fixed in 4% PFA overnight at 4°C before processing for paraffin embedding. Sections of 5 μm were dewaxed and rehydrated, followed by antigen retrieval with microwave treatment in 10 mM Tris-HCl, 1 mM EDTA pH9.0 (TE). After quenching endogenous peroxidase with 1.5% H2O2, samples were blocked with 1% BSA, 0.05% Tween20 in PBS for 10 min at room temperature and then incubated with antibody against CHD4 (Abcam; ab72418), FOXP2 (Abcam; ab16046), FOXP4 (Santa Cruz; sc-292474), or CUX1 (Abcam, Ab54583) diluted in blocking buffer at 4°C overnight. After washing in PBS with 0.05% Tween20, slides were incubated in blocking buffer with biotin conjugated secondary antibody for 30 min at room temperature. Then samples were incubated with VECTASTAIN® ABC Reagent (Vector) for 30 min, followed by incubation with diaminobenzidine (Fluka). Slides were counterstained with hematoxylin and mounted with pertex. Sections were analyzed using Olympus BX41 microscope.
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