How do you detect Th17 cells?
Treg cells and Th17 cells in peripheral blood were detected by flow cytometry, and IL-10, TGF-β, IL-17, IL-21 and IL-22 in peripheral blood were detected by ELISA before and after treatment.
What is the Th17 response?
Th17 cells are characterized by production of IL-17 and may have evolved for host protection against microbes that Th1 or Th2 immunity are not well suited for, such as extracellular bacteria and some fungi. While Th17 cells were only recently recognized as a unique Th-cell subset, IL-17 has been known for much longer.
What type of infection are CD4 T helper 17 Th17 cells important for?
T helper 17 (Th17) cells play an essential role in the clearance of extracellular pathogenic bacteria and fungi. However, this subset is critically involved in the pathology of many autoimmune diseases, e.g., psoriasis, multiple sclerosis, allergy, rheumatoid arthritis, and inflammatory bowel diseases in humans.
Is Th17 a memory cell?
Fate-mapping studies reveal that CD4+ tissue resident-memory cells are derived from effector TH17 cells and play essential roles in response to bacterial infections.
What do Th17 cells produce?
Th17 cells are proinflammatory cells that secrete IL-17A, IL-17F, IL-21, and IL-22 and provide immunity to several extracellular pathogens including defense against infections from Candida, Citrobacter, and Klebsiella (Happel et al., 2005; Huang et al., 2004; Mangan et al., 2006).
What is the role of Th17 cells in autoimmune diseases?
Subsequent research using animal models and human studies has demonstrated a key role for Th17 cells in the immune system’s defence against extracellular bacteria and fungi as well as the development of autoimmune diseases, mediated by the secretion of IL-17 by these cells.
What are T helper 17 cells?
T helper 17 cells ( Th17) are a subset of pro-inflammatory T helper cells defined by their production of interleukin 17 (IL-17). They are related to T regulatory cells and the signals that cause T h 17s to differentiate actually inhibit T reg differentiation.
What is the role of IL-21 in Th17?
In addition to driving Th17 responses, IL-21 promotes cellular immunity by enhancing the function of Th1 cells, CD8 + cytotoxic T cells, and NK cells [ 20 ]. The maturation, terminal differentiation, and function of B cells are also dependent on IL-21 signaling [ 21 ]. Figure 2. Th17 effector function.
What is the role of Th17 in the pathogenesis of osteoporosis?
Sato K, et al. Th17 functions as an osteoclastogenic helper T cell subset that links T cell activation and bone destruction. J Exp Med. 2006;203:2673–2682.