The TRA-1-81 antibody reacts with a carbohydrate epitope on the surface of human embryonal carcinoma (EC), embryonic germ (EG), embryonic stem (ES), induced pluripotent stem (iPS) cells, and hemangioblasts. TRA-1-81 is an epitope within the approximately 200 kDa transmembrane sialoprotein Podocalyxin, also known as Podocalyxin-like Protein-1 (PCLP1 or PODXL).
GloLIVE Human TRA-1-81 NL557 Live Cell MAb (Cl TRA-1-81)
R&D Systems | Catalog # NLLC16581R
50X Concentration, Azide Free
Discontinued Product
NLLC16581R has been discontinued.
View all TRA-1-81 products.
Key Product Details
Species
Human
Applications
Immunocytochemistry/ Immunofluorescence
Conjugate
NL557
Product Summary for GloLIVE Human TRA-1-81 NL557 Live Cell MAb (Cl TRA-1-81)
Kit Summary
To detect TRA-1-81 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 brand GloLIVE™ antibodies 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.
Antibody Components
GloLIVE™ NL557-conjugated Mouse Anti-Human TRA-1-81 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.
Stability and Storage
Reagents are stable for 12 months from date of receipt when stored in the dark at 2° C to 8°
Data Examples
 View Larger Image |
Detection of TRA-1-81 in Live BG01V Human Embryonic Stem Cells. The stem cell marker TRA-1-81 was visualized in live BG01V human embryonic stem cells using the GloLIVE™ NL557-conjugated Anti-Human TRA-1-81 Monoclonal Antibody (Catalog # NLLC16581R; red) and counterstained with Hoechst 33342 (blue). Positive staining for TRA-1-81 in human stem cells is an indicator of pluripotency. |
* BG01V human embryonic stem cells are licensed from ViaCyte, Inc
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Product Specifications
Clone
TRA-1-81
Formulation, Preparation, and Storage
Formulation
Supplied in a saline solution containing BSA and Sodium Azide.
Shipping
The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.
Storage
Store the unopened product at 2 - 8° C. Do not use past expiration date. Protect from light.
Background: TRA-1-81
Long Name
Tumor-related Antigen-1-81
Alternate Names
TRA181
Entrez Gene IDs
5420 (Human)
Gene Symbol
PODXL
Additional TRA-1-81 Products
Product Documents for GloLIVE Human TRA-1-81 NL557 Live Cell MAb (Cl TRA-1-81)
Certificate of Analysis
To download a Certificate of Analysis, please enter a lot or batch number in the search box below.
Note: Certificate of Analysis not available for kit components.
Product Specific Notices for GloLIVE Human TRA-1-81 NL557 Live Cell MAb (Cl TRA-1-81)
For research use only
Related Research Areas
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Protocols
View specific protocols for GloLIVE Human TRA-1-81 NL557 Live Cell MAb (Cl TRA-1-81) (NLLC16581R):
Refer to the product datasheet for complete product details.
Briefly, TRA-1-81 expression can be verified in live cells prior to colony selection or experimentation using this simple procedure:
- Add the TRA-1-81 antibody directly to the media of cultured cells
- Wash the cells after a 30 minute incubation
- Select for and expand SSEA-1-positive colonies
Precautions
Use aseptic technique and sterile culturing conditions to prevent contamination.
Reagents Provided
- GloLIVE™ NL557-conjugated Mouse Anti-Human TRA-1-81 Monoclonal Antibody (Catalog # NLLC16581R).
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.
Find general support by application which include: protocols, troubleshooting, illustrated assays, videos and webinars.
- Appropriate Fixation of IHC/ICC Samples
- Cellular Response to Hypoxia Protocols
- ClariTSA™ Fluorophore Kits
- Detection & Visualization of Antibody Binding
- ICC Cell Smear Protocol for Suspension Cells
- ICC Immunocytochemistry Protocol Videos
- ICC for Adherent Cells
- Immunocytochemistry (ICC) Protocol
- Immunocytochemistry Troubleshooting
- Immunofluorescence of Organoids Embedded in Cultrex Basement Membrane Extract
- Immunohistochemistry (IHC) and Immunocytochemistry (ICC) Protocols
- Preparing Samples for IHC/ICC Experiments
- Preventing Non-Specific Staining (Non-Specific Binding)
- Primary Antibody Selection & Optimization
- Protocol for VisUCyte™ HRP Polymer Detection Reagent
- Protocol for the Fluorescent ICC Staining of Cell Smears - Graphic
- Protocol for the Fluorescent ICC Staining of Cultured Cells on Coverslips - Graphic
- Protocol for the Preparation and Fluorescent ICC Staining of Cells on Coverslips
- Protocol for the Preparation and Fluorescent ICC Staining of Non-adherent Cells
- Protocol for the Preparation and Fluorescent ICC Staining of Stem Cells on Coverslips
- Protocol for the Preparation of a Cell Smear for Non-adherent Cell ICC - Graphic
- TUNEL and Active Caspase-3 Detection by IHC/ICC Protocol
- The Importance of IHC/ICC Controls
- View all Protocols, Troubleshooting, Illustrated assays and Webinars
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