GloLIVE Human/Mouse SSEA-1 NL557 Live Cell Antibody
R&D Systems, part of Bio-Techne | Catalog # NLLC2155R
Key Product Details
Summary for GloLIVE Human/Mouse SSEA-1 NL557 Live Cell Antibody
To detect SSEA-1 expression in live cells by immunocytochemical staining.
Key Benefits
- Verifies marker expression in live stem cells
- Requires only one 30 minute incubation
- Permits continued cell culture post-staining
- Does not affect cell proliferation or stemness
Why confirm marker expression in live cells before colony selection?
Maintaining pluripotent human embryonic stem cells and deriving induced pluripotent stem cells require colony selection and cell expansion. Picking colonies that contain pluripotent stem cells is typically achieved by manually analyzing colony morphology. Unfortunately, this critical process is time-consuming and labor-intensive.
In addition, morphology-based colony selection does not consistently guarantee pluripotent starting populations, since cells can fail to be fully reprogrammed or can naturally differentiate within a colony.
To address this need, R&D Systems offers GloLIVE™ antibodies that allow researchers to confirm stem cell marker expression in live cells before colony selection.
Live pluripotent stem cell imaging:
- Promotes the selection of high quality, undifferentiated stem cell colonies to reduce experimental variation.
- Verifies stem cell pluripotency in 30 minutes, ensuring efficient use of time and reagents.
- Allows for the continued culture of pluripotent cells with no adverse effects on cell proliferation or stemness following staining.
- GloLIVE NL557-conjugated Mouse Anti-Human/Mouse SSEA-1 Monoclonal Antibody.
- Supplied as 50X concentration of antibody in 0.5 mL PBS
Azide free and endotoxin tested (= 5 EU/mL), this antibody can be used for 12 tests, if a staining volume of 2 mL is used.
 | Detection of SSEA-1 in Live D3 Mouse Embryonic Stem Cells. The stem cell marker SSEA-1 was visualized in live D3 mouse embryonic stem cells, grown on irradiated mouse embryonic fibroblasts (Catalog # PSC001), using a GloLIVE NL557-conjugated Anti-Human/Mouse SSEA-1 Monoclonal Antibody (Catalog # NLLC2155R; red). The nuclei were counterstained with Hoechst 33342 (blue). Positive staining for SSEA-1 in mouse stem cells is an indicator of pluripotency. |
Stage-Specific Embryonic Antigen-1 (SSEA-1), an antigenic epitope defined as a Lewis x carbohydrate structure, is expressed during early mouse embryogenesis on murine embryonal carcinoma cells (EC), murine embryonic stem cells (ES), and murine and human germ cells. Expression of SSEA-1 is down-regulated following differentiation of murine EC and ES cells. In contrast, the differentiation of human EC and ES cells is accompanied by an increase in SSEA-1 expression (1, 2).
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Detection of SSEA-1 in Live D3 Mouse Embryonic Stem Cells. The stem cell marker SSEA-1 was visualized in live D3 mouse embryonic stem cells, grown on irradiated mouse embryonic fibroblasts (Catalog # PSC001), using a GloLIVE NL557-conjugated Anti-Human/Mouse SSEA-1 Monoclonal Antibody (Catalog # NLLC2155R; red). The nuclei were counterstained with Hoechst 33342 (blue). Positive staining for SSEA-1 in mouse stem cells is an indicator of pluripotency. |
Assay Procedure
Refer to the product datasheet for complete product details.
Precautions
Use aseptic technique and sterile culturing conditions to prevent contamination.
Reagents Provided
GloLIVE NL557-conjugated Mouse Anti-Human/Mouse SSEA-1 Monoclonal Antibody. (Catalog # NLLC2155R):
Other Supplies Required
Reagents
- Stem cell culture media
Materials
- Human or mouse pluripotent stem cells
- Pipettes and pipette tips
- Serological pipette
Equipment
- 37 °C and 5% CO2 incubator
- Fluorescence microscope
Live Cell Immunocytochemistry Procedure Overview
To ensure sterility of cultures, all steps should be performed under sterile conditions.
- Add fluorochrome-conjugated primary antibody in appropriate culture media to cells.
- Incubate for 30 minutes.
- Replace with fresh culture media.
- Visualize using a fluorescence microscope.
Note: Culture with GloLIVE antibodies does not appear to affect cell proliferation or stemness as assayed by proliferation curves for 3 days post-antibody incubation and expression levels of SSEA-1 and Oct-3/4.
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