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5 protocols using rabbit anti otx2

1

Immunofluorescence Staining of Neural Progenitor Markers

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Cells were fixed with 4% PFA for 10 min, washed with PBS, and blocked with 0.2% Triton X in PBS supplemented with 5% BSA and 10% goat/donkey serum. Cells were then incubated with primary antibodies in 0.2% Triton X in PBS with 5% BSA and 5% goat/donkey serum: rabbit anti-LMX1A (1:2,000, Millipore), goat anti-FOXA2 (1:50; Santa Cruz), rabbit anti-TH (1:500; Pel-Freez), mouse anti-TUJ1 (1:2,000; Promega), rabbit anti-TUJ1 (1:2,000; Covance), rabbit anti-OTX2 (1:1000; Millipore), mouse anti-Nestin (1:50; R&D), rabbit anti-BF1 (1:100; Abcam), mouse anti-NKX2.1 (1:200; Chemicon), rabbit anti-PAX6 (1:300; Covance), rabbit anti-Glutamate (1:2000; Sigma), rabbit anti-VGLUT1 (1:500; Synaptic Systems), rabbit anti-VGLUT2 (1:500; Synaptic Systems), mouse anti-GABA (1:100, Sigma), and rabbit anti-VGAT (1:500; Synaptic Systems).
Corresponding fluorescent-labeled secondary antibodies were used (Alexa-Fluor 488 for green, Alexa-Fluor 555 for red; R&D). Images were captured using a Carl Zeiss Axiovert 200M (Jena, Germany) microscope.
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2

Immunohistochemical Characterization of Neuronal Cell Types

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Cells were fixed for 15 minutes using 4% paraformaldehyde with 4% sucrose in TBS (TrisHCl pH 7.5, NaCl and MilliQ), washed and permeabilized for 15 minutes with Triton-X100 (0.25%) in TBS. After 30 minutes blocking with donkey serum in TBS-Triton (0.25%), cells were incubated overnight at 4 °C with the following antibodies: rabbit or mouse anti-β3 tubulin, rabbit anti-PAX6 (all Covance), mouse anti-HuCHuD, rabbit anti-OCT4, rabbit anti-GS1 (all Thermo Fisher Scientific), chicken anti-MAP2 (Aves), rabbit anti-Nestin, rabbit anti-TBR1, rat anti-CTIP2, mouse anti-SATB2 (all Abcam), rabbit anti-vGLUT1, mouse anti-GAD65 (both Synaptic Systems), mouse anti-S100B (BD transduction laboratories), mouse anti-NANOG, rabbit anti-OTX2, or mouse anti-GFAP (all Millipore). Subsequently, cells were washed and incubated for 1 hour at room temperature with Alexa secondary antibodies (Thermo Fisher Scientific). DAPI was used to counterstain the nuclei. Images were taken either manually with a Leica DMI 4000B microscope or Zeiss LSM 510 (confocal) or automated with the C7000™ High Content Imaging System (confocal, Yokogawa) or Opera Phenix™ High Content Screening System (confocal, Perkin Elmer).
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3

Immunofluorescence Staining of Neuronal Markers

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Cells were fixed with 4% PFA for 10 min, washed with PBS, and blocked with 0.2% Triton X in PBS supplemented with 5% BSA and 10% goat/donkey serum. Cells were then incubated with primary antibodies in 0.2% Triton X in PBS with 5% BSA and 5% goat/donkey serum: rabbit anti-LMX1A (1:2,000, Millipore), goat anti-FOXA2 (1:50; Santa Cruz), rabbit anti-TH (1:500; Pel-Freez), mouse anti-TUJ1 (1:2,000; Promega), rabbit anti-TUJ1 (1:2,000; Covance), rabbit anti-OTX2 (1:1000; Millipore), mouse anti-Nestin (1:50; R&D), rabbit anti-BF1 (1:100; Abcam), mouse anti- NKX2.1 (1:200; Chemicon), rabbit anti-PAX6 (1:300; Covance), rabbit anti-Glutamate (1:2000; Sigma), rabbit anti-VGLUT1 (1:500; Synaptic Systems), rabbit anti-VGLUT2 (1:500; Synaptic Systems), mouse anti-GABA (1:100, Sigma), and rabbit anti-VGAT (1:500; Synaptic Systems).
Corresponding fluorescent-labeled secondary antibodies were used (Alexa-Fluor 488 for green, Alexa-Fluor 555 for red; R&D). Images were captured using a Carl Zeiss Axiovert 200M (Jena, Germany) microscope.
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4

Immunohistochemical Analysis of Cell Markers

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After the prescribed period of graft survival (1 or 6 months), a subset of animals (n = 5/group) were killed by an overdose of sodium pentobarbitone (100 mg/kg), and transcardially perfused with 4% paraformaldehyde and cryosectioned. Immunohistochemistry was performed on fixed cell cultures or brain sections as previously described (Somaa et al., 2017 (link)). Primary antibodies and dilutions were as follows: 4′,6-diamidino-2-phenylindole (DAPI, 1 μg/mL; Sigma Aldrich), goat anti-FOXA2 (1:200; Santa Cruz Biotechnology), chicken anti-GFP (1:1,000; Abcam), rabbit anti-GFAP (1:800; DAKO), mouse anti-HNA (1:300; Millipore), rabbit anti-Ki67 (1:1,000; Thermo Fisher), mouse anti-NESTIN (1:200; Millipore), mouse anti-Neuroligin 3 (Nlgn3, 1:100; Synaptic Systems), mouse anti-OCT4 (1:100; Santa Cruz), rabbit anti-Olig1 (1:200; Millipore), rabbit anti-OTX2 (1:4,000; Millipore), mouse anti-PSA-NCAM (1:200; Santa Cruz), goat anti-SOX2 (1:200; R&D), mouse anti-synaptophysin (hSYP, 1:1,000; Enzo Life Sciences), sheep anti-TH (1:800; Pelfreeze), rabbit anti-TH (1:1,000; Pelfreeze). For quantification of HNA+, Ki67+, GFP+, and TH+ cells, images were captured at 20× magnification using a Zeiss Axio Observer Z.1 epifluorescence microscope. The density of Nestin labeling (percentage of immunoreactive pixels) was assessed from captured images and analyzed using ImageJ software.
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5

Retinal Cell Immunofluorescence Staining

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Immunofluorescence staining of retinal sections or dissociated cells was performed as previously described (Orieux et al., 2014) . The following primary antibodies were used: mouse anti-ATP Synthase Subunit Beta (Life Technologies); mouse anti-Brn3a (Millipore, Guyancourt, France); mouse anti-Calbindin (Swant, Marly, Switzerland); mouse anti-Calretinin (Millipore); mouse anti-GFP (Clinisciences); rabbit anti-GFP (Roche-Diagnostics); rabbit anti-CRX (gift from Dr CM Craft); mouse anti-Glutamine Synthetase (GS; Millipore); mouse anti-Go (Millipore); rabbit anti-Otx2 (Millipore); rabbit anti-Pax6 (Millipore); rabbit anti-PKCα (Santa Cruz Biotechnology); rabbit anti-Recoverin (Millipore), mouse anti-Rhodopsin (R4D2, gift from Dr Molday), rabbit anti-PTPIP51 (Sigma-Aldrich). Fluorescent staining for actin was performed using Alexa Fluor-594 phalloidin (Life Technologies) and TUNEL assay was performed using the in situ cell death detection kit (Roche-Diagnostics), both completed according to the manufacturer's recommendations.
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