- HK5.3 (See other available formats)
- Regulatory Status
- Other Names
- ICOS ligand, ICOSL, B7 homolog 2, B7-H2, B7H2, B7RP1, B7h, ICOS-L
- Rat IgG2a, κ
- Ave. Rating
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- Product Citations
CD275 is a 40 kD protein, also known as ICOS ligand, B7-RP1, B7-H2, and B7h. It is a member of the immunoglobulin receptor superfamily expressed on splenic B cells, dendritic cells, and macrophages. The expression of this antigen is increased by TNF-α stimulation and is highly upregulated by local inflammation. B7RP1 binds to ICOS and co-stimulates T cell and B cell responses. Two isoforms of this protein have been reported to occur as a result of alternative splicing. These isoforms show differential tissue distribution.Product Details
- Antibody Type
- Host Species
- Mouse B7-RP1 transfected cell line
- Phosphate-buffered solution, pH 7.2, containing 0.09% sodium azide.
- The antibody was purified by affinity chromatography, and conjugated with PE under optimal conditions.
- 0.2 mg/ml
- Storage & Handling
- The antibody solution should be stored undiluted between 2°C and 8°C, and protected from prolonged exposure to light. Do not freeze.
FC - Quality tested
- Recommended Usage
Each lot of this antibody is quality control tested by immunofluorescent staining with flow cytometric analysis. For flow cytometric staining, the suggested use of this reagent is ≤1.0 µg per million cells in 100 µl volume. It is recommended that the reagent be titrated for optimal performance for each application.
- Excitation Laser
Blue Laser (488 nm)
Green Laser (532 nm)/Yellow-Green Laser (561 nm)
- Application Notes
Additional reported applications (for the relevant formats) include: in vitro and in vivo blocking of ligand binding1,2. For most successful immunofluorescent staining results, it may be important to maximize signal over background by using a relatively bright fluorochrome-antibody conjugate (Cat. No. 107405) or by using a high sensitivity, three-layer staining technique (e.g., including a biotinylated antibody (Cat. No. 107404) or biotinylated anti-rat IgG second step (Cat. No. 405402), followed by SAv-PE (Cat. No. 405204)). The LEAF™ purified antibody (Endotoxin <0.1 EU/µg, Azide-Free, 0.2 µm filtered) is recommended for functional assays (Cat. No. 107408). For in vivo studies or highly sensitive assays, we recommend Ultra-LEAF™ purified antibody (Cat. No. 107410) with a lower endotoxin limit than standard LEAF™ purified antibodies (Endotoxin <0.01 EU/µg).
(PubMed link indicates BioLegend citation)
- Product Citations
AB_2248797 (BioLegend Cat. No. 107405)
- B7 Immunoglobulin superfamily, approximately 40 kD
Isoform 1 has highest expression in lymphoid tissues, splenic B-cells, T-cells, dendritic cells and macrophages; lower levels in many non-lymphoid tissues. The expression of isoform 2 is restricted to heart, spleen, and kidney.
- Binds to ICOS. Co-stimulates T cell responses including proliferation and cytokine secretion. Stimulates B cell proliferation and differentiation to plasma cells.
- Cell Type
- B cells, Dendritic cells, Lymphocytes, Macrophages, T cells
- Biology Area
- Costimulatory Molecules, Immunology
- Molecular Family
- CD Molecules
- Antigen References
1. Yoshinaga SK, et al. 1999. Nature 402:827.
2. Ling V, et al. 2000. J. Immunol. 164:1653.
3. Ling V, et al. 2001. J. Immunol. 164:1653.
- Gene ID
- 50723 View all products for this Gene ID
- View information about CD275 on UniProt.org
- What type of PE do you use in your conjugates?
- We use R-PE in our conjugates.
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