Cytokines, Cell Surface Proteins Flashcards
HLA associations: B27
psoriatic arthritis, ankylosing spondylitis, IBD-associated arthritis, reactive arthritis
HLA associations: B57
abacavir hypersensitivity
HLA associations: DQ2/DQ8
celiac disease
HLA associations: DR3
DM type 1, SLE, Graves disease, Hashimoto thyroiditis, Addison disease
HLA associations: DR4
rheumatoid arthritis, DM type 1, Addison disease
IL-1
causes fever, acute inflammation; activates endothelium to expression adhesion molecules; recruits WBCs; also called osteoclast-activating factor
IL-1, IL-6, and TNF-alpha can mediated fever and sepsis
IL-6
causes fever and stimulates production of acute-phase proteins
IL-1, IL-6, and TNF-alpha can mediated fever and sepsis
TNF-alpha
activates endothelium; WBC recruitment, vascular leak
causes cachexia in malignancy; maintains granulomas in TB
IL-1, IL-6, and TNF-alpha can mediated fever and sepsis
IL-8
chemotactic factor for neutrophils
IL-12
induces T cell differentiation into Th1 cells; activates NK cells
IL-2
stimulate growth of helper, cytotoxic, and regulatory T cells and NK cells
IL-3
supports growth and differentiation of bone marrow stem cells; functions like GM-CSF
INF-gamma
secreted by NK cells and T cells in response to antigen or IL-12 from macrophages
stimulates macrophages to kill phagocytosed pathogens; inhibits differentiation of Th2 cells; induces IgG isotype switching; increases MHC expression
IL-4
induces differentiation of T cells into Th2 cells; promotes growth of B cells; enhances IgE class switching
IL-5
promotes growth and differentiation of B cells; enhances class switching to IgA; stimulates growth/differentiation of eosinophils
IL-10
attenuates inflammatory response; decreases expression of MHC class II and Th1 cytokines; inhibits activated macrophages and dendritic cells
secreted by T regulatory cells
IL-13
promotes IgE production; induces alternative macrophage activation
T cell surface proteins
TCR, CD3, CD28
TCR binds antigen-MHC complex, CD3 is associated with TCR for signal transduction, CD28 binds B7 on APC
helper T cell surface proteins
CD4, CD40L, CXCR4/CCR5 (coreceptors for HIV)
cytotoxic T cell surface proteins
CD8
regulatory T cell surface proteins
CD4, CD25
B cell surface proteins
Ig (binds antigen), CD19, CD20, CD21 (receptor for EBV), CD40, MHC II, B7 (CD80/86)
NK cell surface proteins
CD16 (binds Fc of IgG), CD56
macrophage surface proteins
CD14 (receptor for PAMPs), CD40, CCR5, MHC II, B7, Fc and C3b receptors
hematopoietic stem cell surface proteins
CD34