MOLT-4 human acute lymphoblastic leukemia cell line was stained with Mouse Anti-Human ULBP-1 Monoclonal Antibody (Catalog # MAB1380, filled histogram) or isotype control antibody (Catalog # MAB003, open histogram), followed by Phycoerythrin-conjugated Anti-Mouse IgG Secondary Antibody (Catalog # F0102B).

Detection of Human ULBP-1 by Flow Cytometry

Multiple receptors and ligands are involved in NK cell-mediated lysis of activated CD4+ T cells.Role of (A) activating and (B) inhibitory NK receptors in NK cell degranulation. Left column: representative histograms (of n≥3) for surface expression of ligands on activated (thick black line) and resting CD4+ T cells (thin black line). Isotype-matched control Ig are represented by dashed line (activated CD4+ T) and filled histogram (resting CD4+ T). Middle- and right column: NK and CD4+ T cells were activated for 4 days in vitro as described, and co-cultured for 4 hours with 10 ug/mL mAb (or relevant isotype-matched control Ig). Degranulation is shown for CD56dim (middle column) and CD56bright (right column) NK cells. Representative histograms of surface expression of receptors on activated (thick black line) and resting NK cells (thin black line). Isotype-matched control Ig are represented by dashed line (activated NK) and filled histogram (resting NK). * P<0.05, ** P<0.005, *** P<0.001. (C) Sorted IL-2-activated CD56dim and CD56bright NK cells were co-cultured with 51Cr-labeled activated CD4+ T cells in a 51Cr-release assay with human IgG4 isotype control (•) or anti-NKG2A mAb (○). Data represents n = 3 experiments. Image collected and cropped by CiteAb from the following publication (https://pubmed.ncbi.nlm.nih.gov/22384114), licensed under a CC-BY license. Not internally tested by R&D Systems.

Applications for Human ULBP-1 Antibody

Application

Recommended Usage

Blockade of Receptor-ligand Interaction

In a functional ELISA, 5-15 ng/mL of this antibody will block 50% of the binding of 20 ng/mL of biotinylated Recombinant Human ULBP-1 Fc Chimera to immobilized Recombinant Human NKG2D Fc Chimera (Catalog # 1299-NK) coated at 2 µg/mL (100 µL/well). At 300 ng/mL, this antibody will block >90% of the binding.

CyTOF-ready

Ready to be labeled using established conjugation methods. No BSA or other carrier proteins that could interfere with conjugation.

Flow Cytometry

0.25 µg/10⁶ cells
Sample: MOLT‑4 human acute lymphoblastic leukemia cell line

Please Note: Optimal dilutions of this antibody should be experimentally determined.

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: ULBP-1

ULBP-1 is a member of a family of cell-surface proteins that function as ligands for human NKG2D. ULBP-1 has also been described under the names RaeT1I (retinoic acid early transcript), ALCAN-beta, and NKG2DL1. The name ULBP-1 derives from the original identification of three proteins, ULBP-1, -2, and -3, as ligands for the human cytomegalovirus glycoprotein UL16; they were designated UL16 binding proteins (ULBP). The gene for ULBP-1 resides in a cluster of ten related genes, six of which encode potentially functional glycoproteins. Amino acid sequence identity within this family ranges from 30-95%. These proteins are distantly related to MHC class I proteins, but they possess only the alpha1 and alpha2 Ig-like domains, and they have no capacity to bind peptide or interact with beta2-microglobulin. They are anchored to the membrane via a GPI-linkage. ULBP-1 and several other family members are known to bind to human NKG2D, an activating receptor expressed on NK cells, NKT cells, gamma delta T cells, and CD8⁺ alpha beta T cells. Engagement of NKG2D results in the activation of cytolytic activity and/or cytokine production by these effector cells. ULBP-1 is expressed on some tumor cells and has been implicated in tumor surveillance (1-8).

References

Cosman, D. et al. (2001) Immunity 14:123.
Kubin, M. et al. (2001) Eur. J. Immunol. 31:1428.
Sutherland, C. et al. (2002) J. Immunol. 168:671.
Steinle, A. et al. (2001) Immunogenetics 53:279.
Sutherland, C. et al. (2001) Immunol. Rev. 181:185
Pende, D. et al. (2002) Cancer Res. 62:6178.
Radosavljevic, M. et al. (2002) Genomics 79:114
NKG2D and its Ligands, 2002; www.RnDSystems.com.

Long Name

UL16 Binding Protein-1

Alternate Names

ALCAN-beta, MULT-1, NKG2DL, NKG2DL1, RAET1I, ULBP1

Entrez Gene IDs

80329 (Human); 77777 (Mouse)

Gene Symbol

ULBP1

Additional ULBP-1 Products

Product Documents for Human ULBP-1 Antibody

Product Datasheets

Download Product Datasheets

COA

SDS

Download SDS

Product Specific Notices for Human ULBP-1 Antibody

For research use only

Citations
Reviews

Calculators
Flow Cytometry

Human ULBP-1 Antibody

R&D Systems, part of Bio-Techne | Catalog # MAB1380

Key Product Details

Species Reactivity

Validated:

Cited:

Applications

Validated:

Cited:

Label

Antibody Source

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Product Specifications

Immunogen

Specificity

Clonality

Host

Isotype

Endotoxin Level

Scientific Data Images for Human ULBP-1 Antibody

Detection of ULBP‑1 in MOLT‑4 Human Cell Line by Flow Cytometry.