HEK293 human embryonic kidney cell line transfected with (A) mouse ICOS or (B) irrelevant transfectants and eGFP was stained with Rabbit Anti-Mouse ICOS Monoclonal Antibody (Catalog # MAB1682) followed by APC-conjugated Anti-Rabbit IgG Secondary Antibody (Catalog # F0111). Quadrant markers were set based on control antibody staining (Catalog # MAB1050). View our protocol for Staining Membrane-associated Proteins.

Applications for Mouse ICOS Antibody

Application

Recommended Usage

Blockade of Receptor-ligand Interaction

In a functional ELISA, 7.5-45 ng/mL of this antibody will block 50% of the binding of 50 ng/mL of Recombinant Mouse ICOS Fc Chimera to immobilized Recombinant Mouse B7-H2 (Catalog # 8127-B7) coated at 1 µg/mL (100 µL/well). At 100 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: HEK293 Human Cell Line Transfected with Mouse ICOS and eGFP

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: ICOS

Mouse ICOS (inducible co-stimulator), also called AILIM (activiation-inducible lymphocyte immunomediatory molecule) and CRP-1 (CD28-related protein-1), is a member of the CD28 family of immune costimulatory receptors. Other family members are CD28, CTLA-4 and PD-1. Mouse ICOS is a homodimeric type I transmembrane protein consisting of 200 amino acids (aa) with a putative 20 aa signal sequence, a 122 aa extracellular domain, a 23 aa transmembrane region, and a 35 aa cytoplasmic domain. ICOS shares approximately 39% aa similarity with CD 28 and CTLA-4. Mouse and human ICOS share approximately 72% aa identity. ICOS is expressed on most CD45RO⁺ cells. ICOS expression is upregulated 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

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

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

Q9WVS0

Additional ICOS Products

Product Documents for Mouse ICOS Antibody

Product Datasheets

Download Product Datasheets

COA

SDS

Download SDS

Product Specific Notices for Mouse ICOS Antibody

For research use only

Citations
Reviews

Calculators
Flow Cytometry

Mouse ICOS Antibody

R&D Systems, part of Bio-Techne | Catalog # MAB1682

Key Product Details

Species Reactivity

Applications

Label

Antibody Source

View all ICOS Antibodies »

Product Specifications

Immunogen

Specificity

Clonality

Host

Isotype

Scientific Data Images for Mouse ICOS Antibody

Detection of ICOS in HEK293 Human Cell Line Transfected with Mouse ICOS and eGFP by Flow Cytometry.