| Product Includes | Product # | Quantity | Color |
|---|---|---|---|
| FastScan™ ELISA Microwell Strip Plate, 96 Well | 53257 | 96 tests | |
| S100A9 Rabbit Capture mAb | 44369 | 1 ea | Green (Lyophilized) |
| S100A9 Rabbit HRP-linked mAb | 28732 | 1 ea | Red (Lyophilized) |
| FastScan™ ELISA Capture Antibody Diluent | 16076 | 3 ml | Green |
| FastScan™ ELISA HRP Antibody Diluent | 28120 | 3 ml | |
| TMB Substrate | 7004 | 11 ml | |
| STOP Solution | 7002 | 11 ml | |
| Sealing Tape | 54503 | 1 ea | |
| ELISA Wash Buffer (20X) | 9801 | 25 ml | |
| FastScan™ ELISA Cell Extraction Buffer (5X) | 69905 | 10 ml | |
| FastScan™ ELISA Cell Extraction Enhancer Solution (50X) | 25243 | 1 ml | |
| FastScan™ ELISA Kit #80235 Positive Control Type 1 | 80205 | 1 ea |
*The microwell plate is supplied as 12 8-well modules - Each module is designed to break apart for 8 tests.
Description
The FastScan™ Total S100A9 ELISA Kit is a sandwich enzyme-linked immunosorbent assay (ELISA) that detects endogenous levels of S100A9. To perform the assay, sample is incubated with a capture antibody conjugated with a proprietary tag and a second detection antibody linked to HRP, forming a sandwich with S100A9 in solution. This entire complex is immobilized to the plate via an anti-tag antibody. The wells are then washed to remove unbound material. TMB is then added. The magnitude of observed signal is proportional to the quantity of S100A9.
*Antibodies in this kit are custom formulations specific to kit.
Specificity/Sensitivity
Background
S100A8 and S100A9 are calcium-binding proteins that form a noncovalent heterodimer present in monocytes, neutrophils, macrophages, and some epithelial cells (1,2). S100A8 and S100A9 are secreted by a tubulin-dependent mechanism during inflammatory conditions and have antimicrobial and chemotactic functions (3-5). Extracellular S100A8/S100A9 also induces an inflammatory response in endothelial cells, including induction of proinflammatory chemokines and adhesion molecules and increased vascular permeability (6). S100A8/S100A9 induces and recruits myeloid-derived suppressor cells (MDSC) in tumor-bearing mice (7). MDSC produce additional S100A8/S100A9 themselves, resulting in a positive feedback mechanism that sustains MDSC accumulation (7). S100A8/S100A9 is also highly expressed in psoriatic skin, where it directly upregulates transcription of complement protein C3, which contributes to disease (8). In addition, tumor-infiltrating myeloid cells induce expression of S100A8 and S100A9 in cancer cells, which increases invasiveness and metastasis (9).
- Odink, K. et al. (1987) Nature 330, 80-2.
- Edgeworth, J. et al. (1991) J Biol Chem 266, 7706-13.
- Rammes, A. et al. (1997) J Biol Chem 272, 9496-502.
- Steinbakk, M. et al. (1990) Lancet 336, 763-5.
- Ryckman, C. et al. (2003) J Immunol 170, 3233-42.
- Viemann, D. et al. (2005) Blood 105, 2955-62.
- Sinha, P. et al. (2008) J Immunol 181, 4666-75.
- Schonthaler, H.B. et al. (2013) Immunity 39, 1171-81.
- Lim, S.Y. et al. (2016) Oncogene 35, 5735-45.
Background References
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
Limited Uses
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