Invitrogen

CD278 (ICOS) Monoclonal Antibody (7E.17G9), eBioscience™

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CD278 (ICOS) Antibody in Flow Cytometry (Flow) — Staining of unstimulated (left) and 3 day ConA activated (right) BALB/c splenocytes with 0.06 µg of Rat IgG2b Isotype Control Purified (Product # 14-4031-82) (open histogram) or 0.06 µg of Anti-Mouse CD278 (ICOS) Purified (filled histogram) followed by Anti-Rat IgG Biotin (Product # 13-4813-85) and Streptavidin PE (Product # 12-4317-87).Total viable cells were used for analysis.

Product Details

14-9942-81

Applications	Tested Dilution	Publications
Flow Cytometry (Flow)	1 µg/test	View 15 publications 15 publications
Inhibition Assays (IA)	-	View 1 publication 1 publication
Functional Assay (FN)	-	View 1 publication 1 publication

Product Specifications
Species Reactivity	Mouse
Published species	Human, Mouse
Host/Isotype	Rat / IgG2b, kappa
Class	Monoclonal
Type	Antibody
Clone	7E.17G9
Conjugate	Unconjugated APC Biotin FITC Functional Grade PE PE-Cyanine5 PE-Cyanine7 PerCP-eFluor 710 Super Bright 436 Super Bright 645
Form	Liquid
Concentration	0.5 mg/mL
Purification	Affinity chromatography
Storage buffer	PBS, pH 7.2
Contains	0.09% sodium azide
Storage conditions	4° C
RRID	AB_468632

Product Specific Information

Description: The 7E.17G9 monoclonal antibody reacts with mouse ICOS (Inducible COStimulatory molecule), a T cell specific molecule and a third member of the CD28/CTLA-4 family. A homodimer of 47-57 kDa, ICOS is expressed on activated T cells, has potent costimulatory activity for T cell activation and proliferation and is required for humoral immune response. ICOS binds to its ligand on activated APC including B cells called B7h/B7RP-1 and is thought to play a protective role in inflammatory autoimmune diseases. ICOS may be involved in the development of Th2 cells.

Applications Reported: 7E.17G9 has been reported for use in flow cytometric analysis and for inhibition of ligand binding in functional assays (please use Functional Grade purified, cat. 16-9942).

Applications Tested: The 7E.17G9 antibody has been tested by flow cytometric analysis of unstimulated and Con A activated (3 day) mouse splenocytes and can be used at less than or equal to 1 µg per test. A test is defined as the amount (µg) of antibody that will stain a cell sample in a final volume of 100 µL. Cell number should be determined empirically but can range from 10^5 to 10^8 cells/test. It is recommended that the antibody be carefully titrated for optimal performance in the assay of interest.

Purity: Greater than 90%, as determined by SDS-PAGE.

Aggregation: Less than 10%, as determined by HPLC.

Filtration: 0.2 µm post-manufacturing filtered.

Target Information

CD278 belongs to the CD28 and CTLA-4 cell-surface receptor family and is highly expressed in activated T-cells. It is essential both for efficient interaction between T and B-cells and for normal antibody responses to T-cell dependent antigens. It enhances all basic T-cell responses to a foreign antigen, namely proliferation, secretion of lymphokines, up-regulation of molecules that mediate cell-cell interaction, and effective help for antibody secretion by B-cells.

For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.

Product References

Proenkephalin⁺ regulatory T cells expanded by ultraviolet B exposure maintain skin homeostasis with a healing function.

Proceedings of the National Academy of Sciences of the United States of America

Shime H,Odanaka M,Tsuiji M,Matoba T,Imai M,Yasumizu Y,Uraki R,Minohara K,Watanabe M,Bonito AJ,Fukuyama H,Ohkura N,Sakaguchi S,Morita A,Yamazaki S

14-9942-81 was used in Flow Cytometry to report a feature of skin Treg cells expanded by ultraviolet B (UVB) exposure.

Tue Aug 25 00:00:00 EDT 2020

Negative Co-stimulation Constrains T Cell Differentiation by Imposing Boundaries on Possible Cell States.

Immunity

Wei SC,Sharma R,Anang NAS,Levine JH,Zhao Y,Mancuso JJ,Setty M,Sharma P,Wang J,Pe'er D,Allison JP

14-9942 was used in Flow cytometry/Cell sorting to implicate negative co-stimulation as a key regulator and determinant of T cell differentiation and suggest that checkpoint blockade might work in part by altering the limits of T cell phenotypes.

Tue Apr 16 00:00:00 EDT 2019

Control of T_reg cell homeostasis and immune equilibrium by Lkb1 in dendritic cells.

Nature communications

Chen S,Fang L,Guo W,Zhou Y,Yu G,Li W,Dong K,Liu J,Luo Y,Wang B,Li Z,Zhao C,Sun Z,Shen Y,Leng Q,Zhou D,Han Z,Huang H,Ren H,Xu G,Feng X