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IL-17 Detection (CAT#: STEM-MB-0284-WXH)

Introduction

IL-17 is secreted by CD4+T cells, and can induce epithelial cells, endothelial cells, and fibroblasts to synthesize and secrete IL-6, IL-8, G-CSF, and PGE2, and promote the expression of ICAM-1. These molecules have different functions in different stages of hematopoiesis, inflammation, and immunity. The interleukin 17 family contains six member ligands (IL-17A ~ IL-17F) and five receptors (IL-17RA ~ IL-17RD and SEF). IL-17 is an inflammatory cytokine produced primarily by activated T cells. Among them, IL-17A has strong inflammatory properties, it can promote the local production of chemokines and stimulate the production of IL-6 and PGE-2.Besides, it can also enhance local inflammation and induce intercellular adhesion molecules on the cell surface (intercellular adhesion molecules, ICAM), which drives the response of T cells. IL-17E also has strong pro-inflammatory effects in vitro and in vivo. Other new members of the IL-17 family have distinctly different expression forms, and therefore may have different biological effects.




Principle

IL-17 achieves its own biological effects through signal transduction. Among them, the IL-17RA and IL-17RC complexes mediate the response of cells to IL-17A and IL-17F. The complex of IL-17RA and IL-17RB mediates the response of cells to IL-17E / IL-25. First, the IL-17 receptor recruits Act1 as an adaptor for downstream signaling. Transcription factor NF-κB activator 1 (Act1) is a bridge molecule between IL-17RA and TNF receptor-related factor 6 (TRAF6). Later, TRAF6 also became a medium for IL-17A to activate NF-κB and JNK. Finally, activation NF-κB, activates the expression of certain specific genes. But in fact, no matter from the signal level, promoter activity, and transcription level of the IL-17 target gene, IL-17A's ability to activate NF-κB alone is very weak. Although IL-17 can only weakly activate downstream signals and gene expression, it can regulate mRNA stability and cooperate with other cytokines, thereby amplifying the response of target cells to IL-17.

Applications

IL-17 can play a key role in protecting the host from infection.
IL-17 helps to treat tumors.
IL-17 has a role in mediating the balance between infection and autoimmunity.

Procedure

1. Process samples.
2. IL-17 detection (qPCR, Enzyme-linked immunosorbent assay (ELISA), Flow cytometry).
3. Analysis results.

Notes

Sample Types-Blood, serum, plasma, cerebrospinal fluid, cell culture supernatant, tissue homogenate, cell culture medium, urine, tumor, etc.

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