Detects human LILRB2/CD85d/ILT4 in direct ELISAs and Western blots. In direct ELISAs and Western blots, approximately 35% cross-reactivity with recombinant human (rh) ILT2 is observed and 5% cross-reactivity with rhILT5 is observed.
Polyclonal Goat IgG
Mouse myeloma cell line NS0-derived recombinant human LILRB2/CD85d/ILT4 Gly24-His458 Accession # Q8N423
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.
<0.10 EU per 1 μg of the antibody by the LAL method.
Recombinant Human LILRB2/CD85d/ILT4 Fc Chimera (Catalog # 2078-T4)
2.5 µg/106 cells
Human peripheral blood monocytes
Ready to be labeled using established conjugation methods. No BSA or other carrier proteins that could interfere with conjugation.
Measured by its ability to neutralize LILRB2/CD85d/ILT4-mediated adhesion of the HSB2 human peripheral blood acute lymphoblastic leukemia cell line. Cosman, D. et al. (1997) Immunity 7:273. The Neutralization Dose (ND50) is typically 0.3-1.0 µg/mL in the presence of 35 µg/mL Recombinant Human LILRB2/CD85d/ILT4 Fc Chimera.
Please Note: Optimal dilutions should be determined by each laboratory for each application.
are available in the Technical Information section on our website.
LILRB2/CD85d/ILT4 in Human Lung.
LILRB2/CD85d/ILT4 was detected in immersion fixed paraffin-embedded sections of human lung using Goat Anti-Human LILRB2/CD85d/ILT4 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF2078) at 1 µg/mL for 1 hour at room temperature followed by incubation with the Anti-Goat IgG VisUCyte™ HRP Polymer Antibody (Catalog # VC004). Tissue was stained using DAB (brown) and counterstained with hematoxylin (blue). Specific staining was localized to macrophages. View our protocol for IHC Staining with VisUCyte HRP Polymer Detection Reagents.
Cell Adhesion Mediated by LILRB2/CD85d/ILT4 and Neutralization by Human LILRB2/CD85d/ILT4 Antibody.
Recombinant Human LILRB2/CD85d/ILT4 Fc Chimera (Catalog # 2078-T4), immobilized onto a microplate, supports the adhesion of the HSB2 human peripheral blood acute lymphoblastic leukemia cell line in a dose-dependent manner (orange line). Adhesion elicited by Recombinant Human LILRB2/CD85d/ILT4 Fc Chimera (35 µg/mL) is neutralized (green line) by increasing concentrations of Goat Anti-Human LILRB2/CD85d/ILT4 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF2078). The ND50 is typically 0.3-1.0 µg/mL.
Preparation and Storage
Reconstitute at 0.2 mg/mL in sterile PBS.
Reconstitution Buffer Available
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
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.
The immunoglobulin-like transcript (ILT) comprise a family of activating and inhibitory type immunoreceptors whose genes are located in the same locus that encodes killer cell Ig-like receptors (KIR) (1‑3). ILT4, also known as LIR-2 and LILRB2, is a type I transmembrane protein expressed primarily on monocytes and dendritic cells (DC) (4). Human ILT4 is produced as a 598 amino acid (aa) precursor including a 21 aa signal sequence, a 440 aa extracellular domain (ECD), a 21 aa transmembrane segment, and a 116 aa cytoplasmic domain. The ECD contains four Ig-like domains, and the cytoplasmic domain contains three immunoreceptor tyrosine-based inhibitory motifs (ITIM) (5). The ECD of human ILT4 shares 76% aa identity with chimpanzee ILT4 and 74%, 81%, 33%, 52%, 77%, 61%, and 64% aa identity with human ILT1, 2, 3, 5, 6, 7, and 8, respectively. ILT4 binds to classical MHC I proteins as well as the non-classical HLA-G1 and HLA-F molecules (5‑9). It competes with CD8 alpha for MHC I binding but does not compete with KIR2DL1 (7). Ligation of ILT4 induces Tyr phosphorylation within its cytoplasmic ITIMs, a requirement for association with SHP-1 (4, 6). Activation of ILT4 inhibits signaling through Fc gamma RI (4) and Fc epsilon RI (6) and causes DC to become tolerogenic by down-regulation of co-stimulatory molecules (10, 11). ILT4 mediates tolerogenic DC-induced CD4+ T cell energy in vitro and in vivo (10‑12).
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Borges, L. et al. (1997) J. Immunol. 159:5192.
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Chang, C.C. et al. (2002) Nat. Immunol. 3:237.
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Manavalan, J.S. et al. (2003) Transpl. Immunol. 11:245.
Leukocyte Immunoglobulin-like Receptor, Subfamily B (with TM and ITIM Domains), Member 5
Entrez Gene IDs:
CD85 antigen-like family member D; CD85d antigen; CD85d; Ig-like transcript 4; ILT4; ILT-4; ILT4CD85d; Immunoglobulin-like transcript 4; Leukocyte immunoglobulin-like receptor 2; leukocyte immunoglobulin-like receptor subfamily B member 2 soluble isoform; leukocyte immunoglobulin-like receptor subfamily B member 2; leukocyte immunoglobulin-like receptor, subfamily B (with TM and ITIM domains); LILRB2; LIR2; LIR2CD85D; LIR-2subfamily A (with TM domain), member 6; member 2; MIR10; MIR10LILRA6; Monocyte/macrophage immunoglobulin-like receptor 10
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The data collected includes not only links to publications in PubMed,
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