Human PD-L2/B7-DC Antibody

Catalog #: MAB11351 Datasheet / COA / SDS

Catalog #	Availability	Size / Price	Qty
MAB11351-100
MAB11351-SP

Blocking of PD‑L2/B7‑DC in HEK293 cells transfected with Human PD-L2 and eGFP cells by Flow Cytometry.

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Human PD-L2/B7-DC Antibody Summary

Species Reactivity

Human

Specificity

Detects human PD-L2/B7-DC in direct ELISA.

Source

Monoclonal Mouse IgG₁ Clone # 1054620

Purification

Protein A or G purified from hybridoma culture supernatant

Immunogen

Human embryonic kidney cell, HEK293-derived recombinant human PD-L2/B7-DC
Accession # Q9BQ51

Formulation

Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.

Label

Unconjugated

Applications

Recommended Concentration

Sample

Blockade of Receptor-ligand Interaction

In a functional flow cytometry test, 25 μg/mL of Mouse Anti-Human PD‑L2/B7‑DC Monoclonal Antibody (Catalog # MAB11351) will block the binding of Recombinant Human PD-1 Fc Chimera Alexa Fluor® 647 Protein (Catalog # AFR1086) to HEK293 cells transfected with Human PD-L2 and eGFP

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

Scientific Data

Blockade of Receptor-ligand Interaction

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Blocking of PD‑L2/B7‑DC in HEK293 cells transfected with Human PD-L2 and eGFP cells by Flow Cytometry. In a functional flow cytometry test, Recombinant Human PD-1 Fc Chimera Alexa Fluor® 647 Protein (AFR1086) binds to HEK293 cells transfected with Human PD-L2 and eGFP. (A) Binding is completely blocked by 25 µg/mL of Mouse Anti-Human PD‑L2/B7‑DC Monoclonal Antibody (Catalog # MAB11351) but not by (B) Mouse IgG₁ Isotype Control (Catalog # MAB002). Staining was performed using our Staining Membrane-associated Proteins protocol.

Reconstitution Calculator

Preparation and Storage

Reconstitution

Reconstitute at 0.5 mg/mL in sterile PBS.

Shipping

Lyophilized product is shipped at ambient temperature. Liquid small pack size (-SP) is shipped with polar packs. Upon receipt, store immediately at the temperature recommended below.

Stability & Storage

Use a manual defrost freezer and avoid repeated freeze-thaw cycles.

12 months from date of receipt, -20 to -70 °C as supplied.
1 month, 2 to 8 °C under sterile conditions after reconstitution.
6 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: PD-L2/B7-DC

Programmed Death Ligand 2 (PD-L2), also known as B7-DC and butyrophilin-like protein, is a member of the B7 family of proteins that provide signals for regulating T-cell activation and tolerance (1). Mature human PD-L2 consists of a 201 amino acid (aa) extracellular domain (ECD) with one V-like and one C-like Ig domain, a 21 aa transmembrane segment, and a 32 aa cytoplasmic domain (2, 3). Within the ECD, mouse and human PD-L2 share 72% aa sequence identity. Alternative splicing generates additional isoforms that lack the second Ig-like domain and may be substituted and truncated following the first Ig-like domain (4). PD-L2 is expressed on dendritic cells, subsets of activated CD4⁺ and CD8⁺ T cells, and memory B cells that differentiate into plasma cells (3, 5, 6). At inflammatory sites such as rheumatoid arthritis, allergen exposure, and virus infection, PD-L2 is up-regulated on synoviocytes, infiltrating macrophages, dendritic cells, and airway epithelial cells (7-11). PD-L2, along with B7-H1/PD-L1, binds to T cell PD-1 where it promotes IFN-gamma production and CD40 Ligand up-regulation while inhibiting IL-4 production (2, 3, 12, 13). In addition, PD-L2 binds to RGM-B on macrophages and alveolar epithelial cells, supporting respiratory immune tolerance (14). In asthma, PD-L2 suppresses IL-5 and IL-13 production, promotes IL-12 production by dendritic cells, and supports allergen-induced airway hyper-responsiveness and mucus production (9, 11).

References

Ceeraz, S. et al. (2013) Trends Immunol. 34:556.
Latchman, Y. et al. (2001) Nat. Immunol. 2:261.
Tseng, S.-Y. et al. (2001) J. Exp. Med. 193:839.
He, X.-H. et al. (2004) Acta Biochim. Biophys. Sinica 36:284.
Messal, N. et al. (2011) Mol. Immunol. 48:2214.
Zuccarino-Catania, G.V. et al. (2014) Nat. Immunol. 15:631.
Guo, G. et al. (2012) Clin. Rheumatol. 31:271.
Loke, P. and J.P. Allison (2003) Proc. Natl. Acad. Sci. USA 100:5336.
Matsumoto, K. et al. (2004) J. Immunol. 172:2530.
Stanciu, L.A. et al. (2006) J. Infec. Dis. 193:404.
Lewkowich, I.P. et al. (2013) Mucosal Immun. 6:728.
Ghiotto, M. et al. (2010) Int. Immunol. 22:651.
Shin, T. et al. (2003) J. Exp. Med. 198:31.
Xiao, Y. et al. (2014) J. Exp. Med. 211:943.

Long Name

Programmed Death-1 Ligand-2

Entrez Gene IDs

80380 (Human); 58205 (Mouse); 309304 (Rat); 102146227 (Cynomolgus Monkey)

Alternate Names

B7-DC; bA574F11.2; Btdc; Butyrophilin B7-DC; Butyrophilin-like Protein; CD273 antigen; CD273; CD273PD-1 ligand 2; MGC142240; PD-1-ligand 2; PDCD1L2MGC142238; PDCD1LG2; PDL2; PD-L2; PDL2B7DC; PD-L2PDCD1 ligand 2; programmed cell death 1 ligand 2; Programmed death ligand 2