370 likes | 546 Views
Efector functions of CD4 + and CD8 + T-cells. Th1. Naivna CD4 + T. Naiv e CD4 + T. Th17. Th2. Defense- intracellular pathogens, stimulation of IgG production. Or gan-specific autoim m une diseases. Defense- helmints. Allergy. Defense- e x tracel l ular bacteria, fungi.
E N D
Th1 Naivna CD4+T Naive CD4+T Th17 Th2 Defense- intracellular pathogens, stimulation of IgG production Organ-specific autoimmune diseases Defense- helmints Allergy Defense- extracellular bacteria, fungi Autoimmunity and chronic inflammation
Th1 Naivna CD4+T Naive CD4+T Th17 Th2 Macrofage activation B-cells IFN-γ IL-12 T-bet IL-4 IL-5 IL-13 Eosinophil activation B-cells… IL-4 GATA-3 IL-17 IL-22 Neutrophil activation... IL-23 RORgt
TH1 response
Efector functions of TH1 cells • Macrophage activation at the site of infection
Efector functions of TH1 cells • Macrophage activation at the site of infection
Efector functions of TH1 cells • Macrophage activation at the site of infection
Efector functions of TH1 cells • Macrophage activation at the site of infection
Efector functions of TH1 cells • Macrophage activation at the site of infection
Efector functions of TH1 cells • Macrophage activation at the site of infection
Efector functions of TH1 cells • B-cell activation
Th1 Naivna CD4+T Naive CD4+T Th17 Th2 Defense- intracellular pathogens, stimulation of IgG production Organ-specific autoimmune diseases Defense- helmints Allergy Defense- extracellular bacteria, fungi Autoimmunity and chronic inflammation
TH2 response
Th1 Naivna CD4+T Naive CD4+T Th17 Th2 Defense- intracellular pathogens, stimulation of IgG production Organ-specific autoimmune diseases Defense- helmints Allergy Defense- extracellular bacteria, fungi Autoimmunity and chronic inflammation
TH17 response
Th1 Naivna CD4+T Naive CD4+T Th17 Th2 Defense- intracellular pathogens, stimulation of IgG production Organ-specific autoimmune diseases Defense- helmints Allergy Defense- extracellular bacteria, fungi Autoimmunity and chronic inflammation
Mechanisms of CD8+ T-cell cytotoxicity
Mechanisms of CD8+ T-cell cytotoxicity
Mechanisms of CD8+ T-cell cytotoxicity
Mechanisms of CD8+ T-cell cytotoxicity
Mechanisms of CD8+ T-cell cytotoxicity Target cell CD8+ CTL
Mechanisms of CD8+ T-cell cytotoxicity perforin Target cell CD8+ CTL
Mechanisms of CD8+ T-cell cytotoxicity perforin granzimi Target cell CD8+ CTL apoptosis
Mechanisms of CD8+ T-cell cytotoxicity Target cell CD8+ CTL FasL
Mechanisms of CD8+ T-cell cytotoxicity Ciljna ćelija CD8+ CTL apoptosis FasL Fas
Pathogens avoid cellular immunity Inhibition of fusion of phagosome with lysosome
Inhibition of immune response by virokines and viroreceptors
1. Subpopulations of efektor CD4+ T-cellsare a. production of IL-4, IL-5, IL-13 Inflammatory reaction rich in eosinophils b. 2. TH1 effector function is 3. TH1 cells are important for defense against c. helminats 4. TH2effector function is d. TH1, TH2 i TH17 e. alternativemacrophage activation 5. TH2cells are important for defense against f. mobilises and activates neutrophils 6. TH2 subpopulation induces g. IFN-γ production andmacrophage activation 7. IL-4 and IL-13 inducealso h. intracellular pathogens 8. IL-17 perforin, granzymes, Fas-FasL interaction CTL effector function is i. 9. 10. CTL killing mechanisms are j. killing virus-infected and tumor cells d. g. h. a. c. b. e. f. j. i.