Antibody data
- Antibody Data
- Antigen structure
- References [2]
- Comments [0]
- Validations
- Flow cytometry [1]
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- Product number
- 47-2239-41 - Provider product page
- Provider
- Invitrogen Antibodies
- Product name
- Anti-CD223 (LAG-3) Monoclonal Antibody (3DS223H), APC-eFluor 780, eBioscience™
- Antibody type
- Monoclonal
- Antigen
- Other
- Description
- Description: This 3DS223H monoclonal antibody recognizes human CD223 also known as Lymphocyte Activation Gene 3 (LAG-3). LAG-3 is a 70-kDa surface glycoprotein belonging to the Ig superfamily with homology to CD4. LAG-3 binds to MHC class II with higher affinity than CD4 and is thought to be involved in the negative regulation of T cell activation and homeostatic proliferation. Surface expression of LAG-3 has been reported on activated T cells (including regulatory T cells) and NK cells. CD8+ T cells usually express LAG-3 at significantly higher levels than CD4+ T cells. Coexpression of LAG-3 and CD49b has been proposed to identify human and mouse Type 1 regulatory T cells (Tr1 cells). This 3DS223H antibody will recognize a formaldehyde-fixed epitope. Applications Reported: This 3DS223H antibody has been reported for use in flow cytometric analysis. Applications Tested: This 3DS223H antibody has been pre-titrated and tested by flow cytometric analysis of stimulated normal human peripheral blood cells. This can be used at 5 µL (0.125 µg) per test. A test is defined as the amount (µg) of antibody that will stain a cell sample in a final volume of 100 µL. Cell number should be determined empirically but can range from 10^5 to 10^8 cells/test. APC-eFluor® 780 emits at 780 nm and is excited with the Red laser (633 nm). Please make sure that your instrument is capable of detecting this fluorochome. Light sensitivity: This tandem dye is sensitive to photo-induced oxidation. Please protect this vial and stained samples from light. Fixation: Samples can be stored in IC Fixation Buffer (cat. 00-8222) (100 µL of cell sample + 100 µL of IC Fixation Buffer) or 1-step Fix/Lyse Solution (cat. 00-5333) for up to 3 days in the dark at 4°C with minimal impact on brightness and FRET efficiency/compensation. Some generalizations regarding fluorophore performance after fixation can be made, but clone specific performance should be determined empirically. Excitation: 633-647 nm; Emission: 780 nm; Laser: Red Laser. Filtration: 0.2 µm post-manufacturing filtered.
- Reactivity
- Human
- Host
- Mouse
- Isotype
- IgG
- Antibody clone number
- 3DS223H
- Vial size
- 25 Tests
- Concentration
- 5 µL/Test
- Storage
- 4° C, store in dark, DO NOT FREEZE!
Submitted references OMIP-037: 16-color panel to measure inhibitory receptor signatures from multiple human immune cell subsets.
Follicular regulatory T cells impair follicular T helper cells in HIV and SIV infection.
Belkina AC, Snyder-Cappione JE
Cytometry. Part A : the journal of the International Society for Analytical Cytology 2017 Feb;91(2):175-179
Cytometry. Part A : the journal of the International Society for Analytical Cytology 2017 Feb;91(2):175-179
Follicular regulatory T cells impair follicular T helper cells in HIV and SIV infection.
Miles B, Miller SM, Folkvord JM, Kimball A, Chamanian M, Meditz AL, Arends T, McCarter MD, Levy DN, Rakasz EG, Skinner PJ, Connick E
Nature communications 2015 Oct 20;6:8608
Nature communications 2015 Oct 20;6:8608
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Supportive validation
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- Invitrogen Antibodies (provider)
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- Experimental details
- Staining of 3-day Anti-CD3 (Product # 16-0037-81) and Anti-CD28 stimulated (Product # 16-0289-81) normal human peripheral blood cells with Anti-Human CD8a PE (Product # 12-0086-42) and Mouse IgG1 K Isotype Control APC-eFluor® 780 (Product # 47-4714-82) (left) or Anti-Human CD223 (LAG-3) APC-eFluor® 780 (right). Viable cells in the lymphocyte gate, as determined by Fixable Viability Dye eFluor® 450 (Product # 65-0863-14), were used for analysis.