NS0 mouse myeloma cell line transfected with human ICOS and mouse myeloma cell line NS0-derived recombinant human ICOS cocktail
Glu21-Phe141
Accession # Q9Y6W8

Specificity

Detects human ICOS in direct ELISAs.

Clonality

Monoclonal

Host

Mouse

Isotype

IgG₁

Scientific Data Images for Human ICOS Antibody

Detection of ICOS in Human PBMCs by Flow Cytometry.

Human peripheral blood mononuclear cells (PBMCs) either (A) untreated or (B) treated with 50 ng/mL PMA and 500 ng/mL calcium ionomycin for 24 hours were stained with Mouse Anti-Human ICOS Monoclonal Antibody (Catalog # MAB6975) followed by Allophycocyanin-conjugated Anti-Mouse IgG Secondary Antibody (Catalog # F0101B) and Mouse Anti-Human CD3e PE-conjugated Monoclonal Antibody (Catalog # FAB100P). Quadrant markers were set based on control antibody staining (Catalog # MAB002).

Applications for Human ICOS Antibody

Application

Recommended Usage

CyTOF-ready

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

Flow Cytometry

2.5 µg/10⁶ cells
Sample: Human peripheral blood mononuclear cells (PBMCs) treated with PMA and calcium ionomycin

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

Sterile PBS to a final concentration of 0.5 mg/mL. 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: ICOS

Inducible costimulator (ICOS), also called AILIM (activiation-inducible lymphocyte immunomediatory molecule) and CRP-1 (CD28-related protein-1), is a member of the growing CD28 family of immune costimulatory receptors. Other family members are CD28, CTLA-4, and PD-1. Human ICOS is a homodimeric type I transmembrane protein consisting of 199 amino acids (aa) with a putative 20 aa signal sequence, a 121 aa extracellular domain, a 23 aa transmembrane region, and a 35 aa cytoplasmic domain. ICOS shares approximately 39% amino acid similarity with CD28 and CTLA-4. Human and mouse ICOS share approximately 72% amino acid identity. ICOS is expressed on most CD45RO⁺ cells. ICOS expression is up-regulated within approximately 24-48 hours of activation on T_h primed cells. B7-H2, a member of the B7 family of costimulatory ligands, has been identified as the ICOS ligand. The B7-H2/ICOS interaction appears to play roles in T cell dependent B cell activation and T_h differentiation.

References

Aicher, A. et al. (2000) J. Immunol. 164:4689.
Coyle, A.J. et al. (2000) Immunity 13:95.
Coyle, A.J. and J.C. Gutierrez-Ramos (2001) Nat. Immunol. 2:203.
Gonzalo, J.A. et al. (2001) J. Immunol. 166:1.
Hutloff, A. et al. (1999) Nature 397:263.
Mages, H.W. et al. (2000) Eur. J. Immunol. 30:1040.
Yoshinaga, S.K. et al. (1999) Nature 402:827.

Long Name

Inducible Co-stimulator

Alternate Names

AILIM, CD278, CRP-1

Entrez Gene IDs

29851 (Human); 54167 (Mouse); 102116512 (Cynomolgus Monkey)

Gene Symbol

ICOS

UniProt

Q9Y6W8

Additional ICOS Products

Product Documents for Human ICOS Antibody

Product Datasheets

Download Product Datasheets

COA

SDS

Download SDS

Product Specific Notices for Human ICOS Antibody

For research use only

Citations
Reviews

Calculators
Flow Cytometry

Human ICOS Antibody

R&D Systems, part of Bio-Techne | Catalog # MAB6975

Key Product Details

Validated by

Species Reactivity

Validated:

Cited:

Applications