Ultra-LEAF™ Purified anti-humanmouserat CD278 ICOS Antibody, CD278, C3984A

Clone: C398.4A (See other available formats)
Regulatory Status: RUO
Other Names: Inducible COStimulatory molecule, H4
Isotype: Armenian Hamster IgG
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Product Citations: publications

C398.4A_ULEAF_CD278_Antibody_FC_061417 — PHA-stimulated human peripheral blood lymphocytes (3 days) were stained with Ultra-LEAF™ Purified CD278 (clone C398.4A, filled histogram) or Ultra-LEAF™ Purified Armenian Hamster IgG isotype control (open histogram), followed by anti-Armenian hamster IgG FITC.

Cat #	Size	Price	Save
313539	100 µg	¥32,870
313540	1 mg	¥105,080

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Description

ICOS, also known as inducible costimulatory molecule and H4, is a 47-57 kD protein. This protein is homologous to the CD28/CTLA-4 proteins. ICOS is expressed on activated T cells and a subset of thymocytes. It is able to costimulate T cells proliferation. In addition, ICOS is involved in humoral immune responses (B cell germinal center formation). The ICOS ligand is B7h/B7RP-1 or B7-H2. ICOS stimulation has been shown to potentiate TCR-mediated IL-4 and IL-10 production and has been proposed to play a role in Th2 cell development.

Product Details

Technical data sheet

Product Details

Verified Reactivity

Human, Mouse, Rat

Reported Reactivity

African Green, Baboon, Cynomolgus, Rhesus, Pig

Antibody Type

Monoclonal

Host Species

Armenian Hamster

Immunogen

Mouse T cell clone D10.G4.1

Formulation

0.2 µm filtered in phosphate-buffered solution, pH 7.2, containing no preservative.

Endotoxin Level

Less than 0.01 EU/µg of the protein (< 0.001 ng/µg of the protein) as determined by the LAL test.

Preparation

The Ultra-LEAF™ (Low Endotoxin, Azide-Free) antibody was purified by affinity chromatography.

Concentration

The antibody is bottled at the concentration indicated on the vial, typically between 2 mg/mL and 3 mg/mL. Older lots may have also been bottled at 1 mg/mL. To obtain lot-specific concentration and expiration, please enter the lot number in our Certificate of Analysis online tool.

Storage & Handling

The antibody solution should be stored undiluted between 2°C and 8°C. This Ultra-LEAF™ solution contains no preservative; handle under aseptic conditions.

Application

FC - Quality tested
IP, Costim - Reported in the literature, not verified in house

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 ≤ 0.5 µg per million cells in 100 µl volume or 100 µl of whole blood. It is recommended that the reagent be titrated for optimal performance for each application.

Application Notes

The C398.4A antibody is useful for flow cytometric analysis and is able to costimulate T cell activation and proliferation. Additional reported applications (for the relevant formats) include: immunoprecipitation¹, in vitro costimulation of T cell activation^1,3,4, and spatial biology (IBEX)^5,6. The LEAF™ purified antibody (Endotoxin < 0.1 EU/µg, Azide-Free, 0.2 µm filtered) is recommended for functional assays (Cat. No. 313512).

Application References (PubMed link indicates BioLegend citation)

Redoglia V, et al. 1996. Eur. J. Immunol. 26:2781. (FC IP Costim)
Yagi J, et al. 2003. J. Immunol. 171:783. (FC)
Arimura Y, et al. 2002. Int. Immunol. 14:555. (Costim)
Arimura Y, et al. 2004. J. Biol. Chem. 279:11408. (Costim)
Radtke AJ, et al. 2020. Proc Natl Acad Sci USA. 117:33455-33465. (SB) PubMed
Radtke AJ, et al. 2022. Nat Protoc. 17:378-401. (SB) PubMed

Product Citations

McCarthy EE, et al. 2022. Cell Rep. 39:110815. PubMed
El-Hattab MY, et al. 2023. J R Soc Interface. 20230004:20. PubMed
Shi J, et al. 2018. Immunity. 49:264. PubMed
Gruber CN, et al. 2020. Cell. 183:982. PubMed

RRID

AB_2810475 (BioLegend Cat. No. 313539)
AB_2810475 (BioLegend Cat. No. 313540)

Antigen Details

Structure: CD28/CTLA-4, 47-57 kD
Distribution: Activated T cells, subset of thymocytes
Function: Costimulates T cell activation, proliferation, humoral immune response
Ligand/Receptor: B7h/B7RP-1/GL-50
Cell Type: T cells, Thymocytes, Tregs
Biology Area: Costimulatory Molecules, Immunology
Molecular Family: CD Molecules
Antigen References: 1. Redoglia V, et al. 1996. Eur. J. Immunol. 26:2781.
2. Hutloff A, et al. 1999. Nature 397:263.
3. Buonfiglio D, et al. 2000. Eur. J. Immunol. 30:3463.
4. Coyle AJ, et al. 2000. Immunity 13:95.
Gene ID: 100048841 View all products for this Gene ID 29851 View all products for this Gene ID 64545 View all products for this Gene ID
UniProt: View information about CD278 on UniProt.org

Documentation

Reviews

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Related Protocols

Cell Surface Flow Cytometry Staining Protocol

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Related Pages & Pathways

Pathways

Related FAQs

Do you guarantee that your antibodies are totally pathogen free?: BioLegend does not test for pathogens in-house aside from the GoInVivo™ product line. However, upon request, this can be tested on a custom basis with an outside, independent laboratory.
Does BioLegend test each Ultra-LEAF™ antibody by functional assay?: No, BioLegend does not test Ultra-LEAF™ antibodies by functional assays unless otherwise indicated. Due to the possible complexities and variations of uses of biofunctional antibodies in different assays and because of the large product portfolio, BioLegend does not currently perform functional assays as a routine QC for the antibodies. However, we do provide references in which the antibodies were used for functional assays and we do perform QC to verify the specificity and quality of the antibody based on our strict specification criteria.
Does BioLegend test each Ultra-LEAF™ antibody for potential pathogens?: No, BioLegend does not test for pathogens in-house unless otherwise indicated. However, we can recommend an outside vendor to perform this testing as needed.
Have you tested this Ultra-LEAF™ antibody for in vivo or in vitro applications?: We don't test our antibodies for in vivo or in vitro applications unless otherwise indicated. Depending on the product, the TDS may describe literature supporting usage of a particular product for bioassay. It may be best to further consult the literature to find clone specific information.

Other Formats

View All CD278 Reagents Request Custom Conjugation

Description	Clone	Applications
Purified anti-human/mouse/rat CD278 (ICOS)	C398.4A	FC,IP,Costim,SB
Biotin anti-human/mouse/rat CD278 (ICOS)	C398.4A	FC
FITC anti-human/mouse/rat CD278 (ICOS)	C398.4A	FC
PE anti-human/mouse/rat CD278 (ICOS)	C398.4A	FC
APC anti-human/mouse/rat CD278 (ICOS)	C398.4A	FC
Alexa Fluor® 488 anti-human/mouse/rat CD278 (ICOS)	C398.4A	FC,SB
Alexa Fluor® 647 anti-human/mouse/rat CD278 (ICOS)	C398.4A	FC,IHC-F
PerCP/Cyanine5.5 anti-human/mouse/rat CD278 (ICOS)	C398.4A	FC
PE/Cyanine7 anti-human/mouse/rat CD278 (ICOS)	C398.4A	FC
Pacific Blue™ anti-human/mouse/rat CD278 (ICOS)	C398.4A	FC
Brilliant Violet 421™ anti-human/mouse/rat CD278 (ICOS)	C398.4A	FC
Brilliant Violet 510™ anti-human/mouse/rat CD278 (ICOS)	C398.4A	FC
APC/Cyanine7 anti-human/mouse/rat CD278 (ICOS)	C398.4A	FC
PE/Dazzle™ 594 anti-human/mouse/rat CD278 (ICOS)	C398.4A	FC
Alexa Fluor® 700 anti-human/mouse/rat CD278 (ICOS)	C398.4A	FC
APC/Fire™ 750 anti-human/mouse/rat CD278 (ICOS)	C398.4A	FC
Brilliant Violet 785™ anti-human/mouse/rat CD278 (ICOS)	C398.4A	FC
Brilliant Violet 605™ anti-human/mouse/rat CD278 (ICOS)	C398.4A	FC
Ultra-LEAF™ Purified anti-human/mouse/rat CD278 (ICOS)	C398.4A	FC,IP,Costim
GoInVivo™ Purified anti-human/mouse/rat CD278 (ICOS)	C398.4A	FC
Brilliant Violet 711™ anti-human/mouse/rat CD278 (ICOS)	C398.4A	FC
Brilliant Violet 650™ anti-human/mouse/rat CD278 (ICOS)	C398.4A	FC
TotalSeq™-B0171 anti-human/mouse/rat CD278 (ICOS)	C398.4A	PG
TotalSeq™-C0171 anti-human/mouse/rat CD278 (ICOS)	C398.4A	PG
TotalSeq™-A0171 anti-human/mouse/rat CD278 (ICOS)	C398.4A	PG
Brilliant Violet 750™ anti-human/mouse/rat CD278 (ICOS)	C398.4A	FC
TotalSeq™-D0171 anti-human/mouse/rat CD278 (ICOS) Antibody	C398.4A	PG
PE/Cyanine5 anti-human/mouse/rat CD278 (ICOS)	C398.4A	FC
Spark Red™ 718 anti-human/mouse/rat CD278 (ICOS)	C398.4A	FC

Certificate of Analysis

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Go To Top Version: 1 Revision Date: 06/14/2017

For Research Use Only. Not for diagnostic or therapeutic use.

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