HEK293 human embryonic kidney cell line transfected with either (A) human PD-L2 or (B) irrelevant transfectants and eGFP was stained with Mouse Anti-Human PD-L2 Monoclonal Antibody (Catalog # MAB12241) followed by APC-conjugated Anti-Mouse IgG Secondary Antibody (Catalog # F0101B). Quadrant markers were set based on control antibody staining (Catalog # MAB003). View our protocol for Staining Membrane-associated Proteins.

Applications for Human PD-L2/B7-DC Antibody

Application

Recommended Usage

Flow Cytometry

0.25 µg/10⁶ cells
Sample: HEK293 Human Cell Line Transfected with Human PD-L2 and eGFP

Formulation, Preparation, and Storage

Purification

Protein A or G purified from hybridoma culture supernatant

Reconstitution

Reconstitute at 0.5 mg/mL in sterile PBS. For liquid material, refer to CoA for concentration.

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.

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

T cells require a signal induced by the engagement of the T cell receptor and a “co‑stimulatory” signal(s) through distinct T cell surface molecules for optimal T cell activation and tolerance. Members of the B7 superfamily of counter-receptors were identified by their ability to interact with co‑stimulatory molecules found on the surface of T cells. Members of the B7 superfamily include B7-1 (CD80), B7-2 (CD86), B7-H1 (PD-L1), B7-H2 (B7RP-1), B7-H3, and PD-L2 (B7-DC) (1). B7 proteins are immunoglobulin (Ig) superfamily members with extracellular Ig-V-like and Ig-C-like domains and short cytoplasmic domains. Among the family members, they share from 20‑40% amino acid (aa) sequence identity. The cloned human PD-L2 cDNA encodes a 273 aa type I membrane precursor protein with a putative 20 aa signal peptide, a 201 aa extracellular region containing one V-like and one C-like Ig domain, a 24 aa transmembrane region, and a 28 aa cytoplasmic domain. The extracellular domains of mouse and human PD-L2 share approximately 70% aa sequence identity (2). PD-L2 is one of two ligands for programmed death-1 (PD-1), a member of the CD28 family of immuno-receptors. The other identified ligand is PD-L1. Human PD-L1 and PD-L2 share approximately 41% aa sequence identity and have similar functions. PD-L2 is broadly expressed in tissues. Highest expression was detected by Northern blot analysis in heart, placenta, liver, pancreas, spleen, and lymph node. Lower amounts of expression were observed in lung, smooth muscle, and thymus. Expression of PD-L2 on antigen presenting cell has been examined in detail. Resting B cells, monocytes and dendritic cells do not express PD-L2, expression however can be induced by LPS or BCR activation in B cells, INF-gamma treatment in monocytes, or LPS plus IFN-gamma treatment of dendritic cells. PD-L2 expression is also up regulated in a variety of tumor cell lines. On previously activated T cells, PD-L2 interaction with PD-1 inhibits TCR-mediated proliferation and cytokine production, suggesting an inhibitory role in regulating immune responses. In contrast, a co‑stimulatory function for the PD-L2 on resting T cells activated with sub-optimal TCR signals has also been reported (3).

References

Coyle, A.J. and J-C. Gutierrrez-Ramos (2001) Nature Immunol. 2:203.
Latchman Y. et al. (2001) Nature Immun. 2:261.
Carreno, B.M. and M. Collins (2002) Annu. Rev. Immunol. 20:29.

Long Name

Programmed Death-1 Ligand-2

Alternate Names

B7-DC, Butyrophilin-like Protein, CD273, PDCD1LG2, PDL2

Entrez Gene IDs

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

Gene Symbol

PDCD1LG2

UniProt

Q9BQ51

Additional PD-L2/B7-DC Products

Product Documents for Human PD-L2/B7-DC Antibody

Product Datasheets

Download Product Datasheets

COA

SDS

Download SDS

Product Specific Notices for Human PD-L2/B7-DC Antibody

For research use only

Citations
Reviews

Calculators
Flow Cytometry

Human PD-L2/B7-DC Antibody

R&D Systems, part of Bio-Techne | Catalog # MAB12241

Key Product Details

Species Reactivity

Applications

Label

Antibody Source

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Product Specifications

Immunogen

Specificity

Clonality

Host

Isotype

Scientific Data Images for Human PD-L2/B7-DC Antibody

Detection of PD-L2 in HEK293 Human Cell Line Transfected with Human PD-L2 and eGFP by Flow Cytometry.