LAG-3 is an activation-induced molecule, expressed on activated T cells and NK cells, but not on resting T cells. Studies using LAG-3 -/- mice have shown significant delay of T cell apoptosis following antigen stimulation and increased size of memory T cells pool following infection (3, 4). It also has been reported that anti-LAG-3 antibodies up-regulate T cell activation by blocking interaction of LAG-3 and MHC class II. The study has demonstrated that LAG-3 is selectively expressed on activated CD4+CD25+ TReg cells and plays a role in their suppressive activity (5). This evidence indicated, unlike the interaction of CD4 with MHC class II that plays a positive role in T cell activation, LAG-3 binds to MHC class II and negatively regulates T cell activation through LAG-3 signaling. On the other hand, studies have shown that binding of LAG-3 to MHC class II molecules on antigen presenting cells induce maturation of dendritic cells and cytokine secretion by monocytes through MHC class II signal transduction (6). Taken together, LAG-3 may have two major functions, it negatively regulates T cells activation through LAG-3 signaling and stimulates antigen presenting cells which express MHC class II.
Human LAG‑3 Alexa Fluor® 700‑conjugated Antibody
R&D Systems | Catalog # FAB23197N
Key Product Details
Species Reactivity
Applications
Label
Antibody Source
Product Specifications
Immunogen
Leu23-Leu450
Accession # P18627
Specificity
Clonality
Host
Isotype
Applications for Human LAG‑3 Alexa Fluor® 700‑conjugated Antibody
Flow Cytometry
Sample: HEK293 Human Cell Line Transfected with Human LAG-3 and eGFP
Spectra Viewer
Plan Your Experiments
Use our spectra viewer to interactively plan your experiments, assessing multiplexing options. View the excitation and emission spectra for our fluorescent dye range and other commonly used dyes.
Spectra Viewer
Flow Cytometry Panel Builder
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Advanced Features
- Spectra Viewer - Custom analysis of spectra from multiple fluorochromes
- Spillover Popups - Visualize the spectra of individual fluorochromes
- Antigen Density Selector - Match fluorochrome brightness with antigen density
Formulation, Preparation, and Storage
Purification
Formulation
Shipping
Stability & Storage
- 12 months from date of receipt, 2 to 8 °C as supplied.
Background: LAG-3
References
- Triebel, F. et al. (1990) J. Exp. Med. 171:1393.
- Baixeras, E. et al. (1992) J. Exp. Med 176:327.
- Workman, C.J. and D.A. Vignali (2003) Eur. J. Immunol. 33:970.
- Workman, C.J. et al. (2004) J. Immunol. 172:5450.
- Huang, C.T. et al. (2004) Immunity 21:503.
- Andreae, S. et al. (2003) Blood 102:2130.
Long Name
Alternate Names
Gene Symbol
UniProt
Additional LAG-3 Products
Product Documents for Human LAG‑3 Alexa Fluor® 700‑conjugated Antibody
Certificate of Analysis
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Product Specific Notices for Human LAG‑3 Alexa Fluor® 700‑conjugated Antibody
This product is provided under an agreement between Life Technologies Corporation and R&D Systems, Inc, and the manufacture, use, sale or import of this product is subject to one or more US patents and corresponding non-US equivalents, owned by Life Technologies Corporation and its affiliates. The purchase of this product conveys to the buyer the non-transferable right to use the purchased amount of the product and components of the product only in research conducted by the buyer (whether the buyer is an academic or for-profit entity). The sale of this product is expressly conditioned on the buyer not using the product or its components (1) in manufacturing; (2) to provide a service, information, or data to an unaffiliated third party for payment; (3) for therapeutic, diagnostic or prophylactic purposes; (4) to resell, sell, or otherwise transfer this product or its components to any third party, or for any other commercial purpose. Life Technologies Corporation will not assert a claim against the buyer of the infringement of the above patents based on the manufacture, use or sale of a commercial product developed in research by the buyer in which this product or its components was employed, provided that neither this product nor any of its components was used in the manufacture of such product. For information on purchasing a license to this product for purposes other than research, contact Life Technologies Corporation, Cell Analysis Business Unit, Business Development, 29851 Willow Creek Road, Eugene, OR 97402, Tel: (541) 465-8300. Fax: (541) 335-0354.
For research use only
Related Research Areas
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Protocols
Find general support by application which include: protocols, troubleshooting, illustrated assays, videos and webinars.
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- Protocol: Annexin V and PI Staining by Flow Cytometry
- Protocol: Annexin V and PI Staining for Apoptosis by Flow Cytometry
- Troubleshooting Guide: Fluorokine Flow Cytometry Kits
- View all Protocols, Troubleshooting, Illustrated assays and Webinars
FAQs for Human LAG‑3 Alexa Fluor® 700‑conjugated Antibody
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Q: Can this LAG-3 antibody be used in ELISA?
A: We have not validated this particular LAG-3 antibody for ELISA in mouse; however, it has been cited as being used as a detection antibody in a publicatoin (PMID 15946792).
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Q: I'm using your LAG-3 antibody in western blot but the observed band is a different size than the predicted band size, do you know what the bands are?
A: There are several alternative splice varients of LAG-3 that could explain the different sized proteins stained by the LAG-3 antibody. It is also believed that there are two secreted forms of LAG-3, one that is about 36 kDa and another at 52 kDa.
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Q: Can this LAG-3 antibody be used in ELISA?
A: We have not validated this particular LAG-3 antibody for ELISA in mouse; however, it has been cited as being used as a detection antibody in a publicatoin (PMID 15946792).
-
Q: I'm using your LAG-3 antibody in western blot but the observed band is a different size than the predicted band size, do you know what the bands are?
A: There are several alternative splice varients of LAG-3 that could explain the different sized proteins stained by the LAG-3 antibody. It is also believed that there are two secreted forms of LAG-3, one that is about 36 kDa and another at 52 kDa.