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12. MUCOSAL IMMUNITY
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13. TRANSPLANTATION
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14. ANTI-TUMOUR IMMUNITY
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15. REGULATION OF IMMUNE RESPONSES
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MECHANISMS OF Treg
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DEVELOPMENT AND SELECTION IN THYMUS – ALSO Treg!!!
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BASIC DOGMA OF THE ADAPTIVE RESPONSE: ANTIBODY RESPONSES (B, Th2) – EFFECTIVE AGAINST EXTRACELLULAR PARASITES INFLAMMATORY RESPONSES (Th1, Tc) – EFFECTIVE AGAINST INTRACELLULAR PARASITES MUTUAL COMPETITION Th1 vs. Th2 (REGULATION BY POSITIVE FEEDBACK) WRONG CHOICE OF THE Th1 vs. Th2 RESPONSE CAN BE FATAL (LEPROSY…)
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Th1 x Th2 („they don’t like each other …“) IFN vs. IL-4
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16. IMMUNOPATOLOGIC REACTIONS - ALLERGIES
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Incidence of prototypical infectious diseases and immune disorders 1950 to 2000 N Engl J Med, Vol 347, No. 12, 09/2002
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HUGE INCREASE OF ALLERGIES AS „CIVILIZATION DISEASES“ Epidemiological studies - hygienic hypothesis: Early childhood on a (primitive) farm (mycobacteria, LPS?) Intestinal parasites Breast feeding Non/pasteurized milk “Good” intestinal flora Hepatitis A Diesel exhaust particles? Life style in general (DDR vs. FRG, Turkish immigrants, anthroposophy..)
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17. IMMUNOPATOLOGIC AUTOIMMUNE REACTIONS
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DiseaseAutoantibodies to Systemic lupus erythematodesNuclear antigens; blood elements Rheumatoiod arthritis Fc-fragments of immunoglobulins ("rheumatoid factor") DermatopolymyositisExtractable nuclear antigens Jo-1, PM/Scl Sjögren’s diseaseExtractable nuclear antigens (SS-A, SS-B) Systemic sclerodermyExtractable nuclear antigens (Scl-70) Anti/phospholipide syndromPhospholipids Some vasculitisCytoplasmatic antigens of neutrophils
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DiseaseHLARelative risk* Ankylosing spondyloarthritis (Bechterev disease) B2787.4 Uveitis B2710 Goodpasture syndrom DR215.9 Multiple sclerosis DR24.8 Graves-Basedow disease DR33.7 Systemic lupus erythematodes DR35.8 Myasthenia gravis DR32.5 Pemphigus DR414.4 Rheumatoid arthritis DR44.2 Hashimotova thyreoiditis DR53.2
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18. IMMUNODEFICIENCIES
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Nu/nu mouse (athymic)
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19. IMMUNOPROPHYLAXIS AND IMMUNOTERAPY
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MARKED SUCCESS – THERAPEUTIC MONOCLONAL ANTIBODIES: Discovery 1976, Nobel prize 1984. Not patented… >15 years technical difficulties in therapeutic uses Last cca 10 years – huge progress (humanized mAb), most dynamic field of pharmaceutic industry, sales over 20 billion USD per year… Cca 30 approved by FDA, other cca 100 under testing
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HOPEFULLY IN FUTURE: - BETTER VACCINES (HIV, WEAK AND TUMOR ANTIGENS?) - BETTER IMMUNOSUPPRESSION (AUTOIMMUNE DISEASES, ALLERGIES, TRANSPLANTATION) - EFFECTIVE IMMUNOTHERAPIES OF TUMOURS (A WEAK SPOT OF IMMUNITY…)
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