CD223 Rat anti-Mouse, BB700, Clone: C9B7W, BD Optibuild™

Catalog No.	Quantity
BDB742206	50 μg

Catalog No. BDB742206 Supplier BD Biosciences Supplier No. 742206

Description

Rat Monoclonal Antibody

C9B7W mAb specifically binds to an epitope in the D2 domain of CD223 (LAG3), the 70kDa protein encoded by Lymphocyte-activation gene 3 (Lag3 ). A fusion protein consisting of the entire extracellular region of mouse LAG3 with mouse IgG1 was used as immunogen. CD223 is a type-I membrane protein with four extracellular Ig-like domains. It is structurally homologous to CD4. Like CD4, it binds MHC class II molecules. Unlike CD4, it is not expressed on resting human and mouse T lymphocytes. In mouse, as previously described in human, CD223 expression is upregulated on T lymphocytes (both CD4+ and CD8+) activated through the T-cell receptor (TCR) and on IL-2-activated NK (LAK) cells, and it is not detected on B cells, dendritic cells, or Phorbol 12-myristate 13-acetate (PMA)-stimulated splenocytes. Studies on human peripheral T lymphocytes suggest that CD223 associates with the TCR to downregulate TCR signaling. In contrast, in vivo and in vitro evaluations of vaccination protocols in mice suggest that CD223 promotes immune responses by activating antigen-presenting cells. Furthermore, NK cells of Lag3-/-mice display defects in their capacity to kill certain tumor cells. Mouse CD223 also has been demonstrated to contribute to the suppressor function of T regulatory cells and the C9B7W antibody has been shown to inhibit this function in vitro and in vivo. Therefore, CD223 appears to play complex roles in the regulation of immune responses.

The antibody was conjugated to BD Horizon™ BB700, which is part of the BD Horizon Brilliant™ Blue family of dyes. It is a polymer-based tandem dye developed exclusively by BD Biosciences. With an excitation max of 485 nm and an emission max of 693 nm, BD Horizon BB700 can be excited by the 488 nm laser and detected in a standard PerCP-Cy™5.5 set (eg, 695/40nm filter). This dye provides a much brighter alternative to PerCP-Cy5.5 with less cross laser excitation off the 405 nm and 355 nm lasers.BD Horizon Brilliant™ Blue 700 (BB700) is a dye that was exclusively developed by BD Biosciences as brighter alternative to PerCP-Cy5.5. This dye also has less cross laser excitation off the 405 nm laser, resulting in less spillover into the violet channels compared to PerCP-Cy5.5.  Due to similar excitation and emission properties, BD Horizon BB700 and PerCP-Cy5.5 cannot be used simultaneously.

Specifications

• Antigen: CD223
• Classification: Monoclonal
• Clone: C9B7W
• Concentration: 0.2mg/mL
• Conjugate: Brilliant Blue 700 (BB700)
• Formulation: Aqueous buffered solution containing ≤0.09% sodium azide.
• Gene Alias: Lag3, LAG-3, Lymphocyte-activation gene 3, Ly66
• Host Species: Rat
• Immunogen: Mouse LAG3 fusion protein
• Purification Method: Affinity Purified
• Quantity: 50 μg
• Regulatory Status: RUO
• Primary or Secondary: Primary
• Target Species: Mouse
• Content And Storage: Store undiluted at 4°C and protected from prolonged exposure to light. Do not freeze.
• Isotype: IgG1 κ