WB, IP, IHC-P, IF-F
M R
Endogenous
22-35
Rabbit IgG
#Q9WVS0
54167
Product Information
Product Usage Information
| Application | Dilution |
|---|---|
| Western Blotting | 1:1000 |
| Immunoprecipitation | 1:100 |
| Immunohistochemistry (Paraffin) | 1:50 - 1:200 |
| Immunofluorescence (Frozen) | 1:200 - 1:800 |
Storage
For a carrier free (BSA and azide free) version of this product see product #18670.
Specificity / Sensitivity
Species Reactivity:
Mouse, Rat
Source / Purification
Monoclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Val198 of mouse ICOS protein.
Background
ICOS (Inducible Co-Stimulator, CD278) is a member of the CD28 family that regulates T cell activity and immune responses (1). The ICOS protein contains an extracellular IgV-like domain, a transmembrane domain, and an intracellular domain with a YMFM motif (1-2). ICOS is primarily expressed on activated CD4+ and CD8+ T cells (1). Upon binding to its ligand, ICOS potentiates the T cell response to antigen through activation of the PI3K signaling pathway (3). In addition to enhancing T cell activation and proliferation, ICOS plays an important role in the regulation of T follicular helper cells (4). Research studies suggest that ICOS is a potential therapeutic target, and could serve as a prognostic biomarker for neoplastic therapy involving CTLA-4 blockade (5-7).
- Hutloff, A. et al. (1999) Nature 397, 263-6.
- Coyle, A.J. et al. (2000) Immunity 13, 95-105.
- Fos, C. et al. (2008) J Immunol 181, 1969-77.
- Hutloff, A. (2015) Oncotarget 6, 21785-6.
- Kyi, C. and Postow, M.A. (2014) FEBS Lett 588, 368-76.
- Fan, X. et al. (2014) J Exp Med 211, 715-25.
- Ng Tang, D. et al. (2013) Cancer Immunol Res 1, 229-34.
Species Reactivity
Species reactivity is determined by testing in at least one approved application (e.g., western blot).
Western Blot Buffer
IMPORTANT: For western blots, incubate membrane with diluted primary antibody in 5% w/v nonfat dry milk, 1X TBS, 0.1% Tween® 20 at 4°C with gentle shaking, overnight.
Applications Key
WB: Western Blotting IP: Immunoprecipitation IHC-P: Immunohistochemistry (Paraffin) IF-F: Immunofluorescence (Frozen)
Cross-Reactivity Key
H: human M: mouse R: rat Hm: hamster Mk: monkey Vir: virus Mi: mink C: chicken Dm: D. melanogaster X: Xenopus Z: zebrafish B: bovine Dg: dog Pg: pig Sc: S. cerevisiae Ce: C. elegans Hr: horse GP: Guinea Pig Rab: rabbit All: all species expected
Trademarks and Patents
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