Cytokines , receptors and signaling Flashcards
source of TNF
macrophages, T cells
Target of TNF
enothelia, epitherlia, neutrophils, hypothalamus, liver, muscle
Function of TNF
Activation (inflammation) and oxicdative burst and fever
Activation (inflammation) and oxicdative burst and fever caused by
TNF
IL-1 made by
Macrophages and endothelial cells
IL-1 targets
enodothelia and hypothalamus, liver
IL-1 causes
activation of inflammation and fever
IL-1 in the liver cauess
acute phase protein synthesis
IL-6 made by in
macrophages, endothelial cells and T cells
IL-6 targets
Liver and B cells
IL-6 causes
acute phase protein synt in the liver and poliferation of anitbody producing B cells
IL12 made by
DCs and macrophages
IL12 target
T cells
IL12 function
Increase IFN-gamma secreation, increase cytotoxic activity, Th1 differentiation
IL23 makde by
DCs and marcorphages
IL-23 targets
T cells
IL-23 promotes
Th17 differentiation
IL8 and other chemokines makde by
DCs and endothelia and T cells
IL-8 and other chemokines targe
leukocytes
IL8 funciton
PMN chemotaxis, leukocyte migration, DC lymph node migration
IFN gamma and IFN betta are examples of
antiviral cytokines
INF alpha made by
DCs
INF betta made by
fibroblasts
INF alpha tagets
all cells
INF alpha causes
anitiviarl immunity, increase class I MHC and activates NK cells
What ativates NK cells
INFalpha
IFN gamma (helper) made by
TH1 cells
INF gamma targets
macrophages and B cells
INF gamma
activates macrophage, isotype switching in B cells to IgG
IL4, IL5, IL13 make by
Th2 cells
IL4/5/13 target
B cells
IL4/5/13 cause
isotype switch to IgE
IL17 is from
TH17
IL17 target
PMNS and epithelia
IL17 caues
activation /mitogen for PMNs and increases antimicrobial peptides
TGFbetta comes from
epithelia, NK cells, Tregs, fibroblats, endothelia, others
TGF betta targets
T cells and B cells
TGF betta acts by
suppressing Th1 and Th2 devo, promotes Th17 differentiation and increaes B cell IgA isotype switching
What suprreses Th1 and Th2 devo
TGF betta
what promotes Th17 differentiation
TGFbetta
what increas B cell IgA isotype swithc
TGFbetta
what increases anitviarl immunity
INFgamma/betta
What activates NK cells
INFgamma
What couases increase in IFNgamma secreation and Th1 differentiation
IL12
What two things act on hypothalamus to cause fever
IL1, and TNF
causes isotype switching in B cells to IgG
INFgamma acting through Th1
IL10 source is
macrophages, DC, Th2 cells
IL 10 targets
macrophates, DCs and T cells
IL 10 functions to
inhibit IL12 produciton, reduce MHC class II and inhibit co-stim molecule expression
what inhibits IL12 produciton
IL10
What reduces MHC class II
IL10
What ihibits co-stim molecule expression
IL10
IL 2 source
Activated T cell
IL2 targets
autocrine activated T cells
IL2 function:
mitogen for activat mature niave T cells
IL 7 source
bone marrow stromal
protects body against bacteria and fungi
Th17
IL 7 targets
Immature T and B lymphocytes
IL 7 funciton
mitogen for devoi’ng immautre lymphocytes
IL15 and IL18 source
marcrophages
IL 15 and IL 18 target
NK cells
IL15 and IL18 function to
be a mitogen for NKcells to push for IFNgamma production.
G-CSF and GM-CSF source
Macros adn T cells
Target for G-CSF and GM-CSF
immature myeloid cells
function of G-CSF and FM CSF
mitogen for myloid progenitor cells, immune suppresion