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Mouse anti ssea4

Manufactured by Cell Signaling Technology

Mouse anti-SSEA4 is a monoclonal antibody that recognizes the SSEA-4 (Stage-Specific Embryonic Antigen 4) surface marker. SSEA-4 is a glycosphingolipid that serves as a marker for undifferentiated embryonic stem cells and other pluripotent cells.

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5 protocols using mouse anti ssea4

1

Immunocytochemistry and Mitochondrial Analysis

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Cells were grown in coated 96-well plates or chamber slides, fixed in 4% paraformaldehyde for 10 min, and permeabilized in 0.3% Triton X-100 in PBS for 10 min. Cells were then blocked with 5% BSA for at least 1 hr before incubation with chicken anti-GFP (Abcam, ab13970) 1:2000, rabbit anti-Tom20 (Santa Cruz, SC11415) 1:500, mouse anti-SSEA4 (Cell Signaling CS 4755) 1:500, mouse anti Tra-1-60 (Cell Signaling CS 4746) 1:500, mouse anti Tra-1-81 (Cell Signaling CS 4745) 1:500, rabbit anti-Pax6 (Covance, PRB-278P) 1:500, or mouse anti-Nestin (Abcam, ab6142) 1:1000 overnight at 4°C. Cells were washed 3 times with PBS, then incubated with AlexaFluor 488, AlexaFluor 555, and/or AlexaFluor 647 (Fisher) at 1:500 dilutions for 1 hr at RT. To stain nuclei, cells were incubated with 1:10000 Hoechst 33342 (Life Technologies). Cells were preserved in Prolong Gold anti-fade reagent (Life Technologies) and imaged on a fluorescence microscope (Z1 Axio Observer Apotome, Zeiss). Mitochondrial length was quantified using an ImageJ mitochondrial morphometry plugin as described previously (Dickey and Strack, 2011 (link)).
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2

Immunofluorescence Analysis of Stem Cell Markers

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Cells were fixed with 4% paraformaldehyde for 30 min and then permeabilized in PBS containing 0.2% Triton X-100. Cells were blocked with PBS containing 3% BSA, and incubated with primary antibodies overnight at 4 °C. Then the cells were incubated with the secondary antibodies for 1 h at room temperature after washing with PBS. Images were acquired on a TCS SP5 laser-scanning microscope (Leica). The following antibodies and dilutions were used: goat anti-OCT-3/4 (1:500, Cat #sc-8628, Santa Cruz), goat anti-SOX2 (1:500, Cat #sc-17320, Santa Cruz), mouse anti-TRA-1-81 (1:50, Cat #MAB4381, Millipore), mouse anti-SSEA4 (1:500, Cat #4755, Cell Signaling), rabbit anti-FOXA2 (1:250, Cat #8186, Cell Signaling), goat anti-SOX17 (1:500, Cat #GT15094, Acris/Novus), goat anti-PDX1 (1:500, Cat #AF2419, R&D Systems), rabbit anti-NKX6.1 (1:300, Cat #NBP1-82553, Acris/Novus), guinea pig anti-C-Peptide (1:100, Cat #ab30477, Abcam), mouse anti-Glucagon (1:500, Cat #G2654, Sigma), rat anti-Somatostatin (1:300, Cat #MA5-16987, Invitrogen).
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3

Immunofluorescence Staining of Stem Cells

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Immunofluorescence was performed on cells grown directly on slides as previously described (Chadwick and Willard 2002 (link)). Except, the maximum slide seed area was delimited using a Super PAP Pen (IM3580, Beckman Coulter®) and coated with 700µl of Matrigel™ or 0.1% Gelatin prior to seeding hESCs or EBOGs, respectively. Additionally, hESCs were allowed to adhere for 1hr in complete StemPro® media supplemented with ROCK Inhibitor Y-27632 (ROCKi, SCM075, Millipore™), the media was then replaced with fresh complete StemPro® media (-ROCKi), and allowed to recover overnight. Antibodies used for indirect Immunofluorescence included rabbit anti-H3K4me2 (07–030, EMD Millipore), mouse anti-H3K27me3 (ab6002, abcam), rabbit anti-NANOG (3580S, Cell Signaling Technology), mouse anti-SSEA4 (4755S, Cell Signaling Technology), goat anti-SOX2 (AF2018, R&D Systems), and rabbit anti-OCT4 (2750S, Cell Signaling Technology). Conjugate secondary antibodies (Alexa-Fluor®) were obtained from Life Technologies Corporation. DNA was counterstained using the VECTASHIELD® mounting medium with DAPI from VECTOR Laboratories. Imaging was performed on an Olympus IX71 operated by the DeltaVision pDV, deconvolved with softWoRx 5.5.1 (DeltaVision), and compiled using Adobe Photoshop CS6 (Adobe Systems).
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4

Immunofluorescence Characterization of Stem Cells

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Cells were fixed with 4% paraformaldehyde for 30 min and then permeabilized in PBS containing 0.2% Triton X-100. Cells were blocked with PBS containing 3% BSA, and incubated with primary antibodies overnight at 4 °C. Then secondary antibodies were incubated for 1 h at room temperature after washing with PBS. Images were acquired on a TCS SP5 laser-scanning microscope (Leica). The following antibodies and dilutions were used: goat anti-OCT-3/4 (1:500, #sc-8628, Santa Cruz), goat anti-SOX2 (1:500, #sc-17320, Santa Cruz), mouse anti-TRA-1-60 (1:1000, #4746, Cell Signaling), mouse anti-TRA-1-81 (1:50, MAB4381, Millipore), mouse anti-SSEA4 (1:500, #4755, Cell Signaling), rabbit anti-FOXA2 (1:250, #8186, Cell Signaling), goat anti-SOX17 antibody (1:500, #GT15094, Acris/Novus), goat anti-PDX1 antibody (1:500, #AF2419, R&D Systems).
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5

Immunocytochemistry and Mitochondrial Analysis

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Cells were grown in coated 96-well plates or chamber slides, fixed in 4% paraformaldehyde for 10 min, and permeabilized in 0.3% Triton X-100 in PBS for 10 min. Cells were then blocked with 5% BSA for at least 1 hr before incubation with chicken anti-GFP (Abcam, ab13970) 1:2000, rabbit anti-Tom20 (Santa Cruz, SC11415) 1:500, mouse anti-SSEA4 (Cell Signaling CS 4755) 1:500, mouse anti Tra-1-60 (Cell Signaling CS 4746) 1:500, mouse anti Tra-1-81 (Cell Signaling CS 4745) 1:500, rabbit anti-Pax6 (Covance, PRB-278P) 1:500, or mouse anti-Nestin (Abcam, ab6142) 1:1000 overnight at 4°C. Cells were washed 3 times with PBS, then incubated with AlexaFluor 488, AlexaFluor 555, and/or AlexaFluor 647 (Fisher) at 1:500 dilutions for 1 hr at RT. To stain nuclei, cells were incubated with 1:10000 Hoechst 33342 (Life Technologies). Cells were preserved in Prolong Gold anti-fade reagent (Life Technologies) and imaged on a fluorescence microscope (Z1 Axio Observer Apotome, Zeiss). Mitochondrial length was quantified using an ImageJ mitochondrial morphometry plugin as described previously (Dickey and Strack, 2011 (link)).
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