Immunologic Tolerance Flashcards
Antigens which generate immunity
Immunogens
Antigens which induce tolerance
Toleregens
Unresponsiveness to an antigen induced by previous exposure to the antigen
Immunological Tolerance
Functional unresponsiveness
Anergy
Therapy to stop or prevent the autoimmune disease while leaving the body’s disease-fighting abilities intact
Immune tolerance therapy
Central vs peripheral tolerance
Central: induced in generative lymphoid organs
Peripheral: physiological unresponsiveness to self antigens; recognition of antigens without costimulators
Deletion: cells with ____ avidity for self-antigens are deleted by apoptosis
High
Transcription factor which promotes the expression of selected tissue antigens in the thymus
AIRE: autoimmune regulator protein
Autoimmune disorder related to deletion, mutations in AIRE gene
Autoimmune polydenocrine syndrome
Inhibitory receptor active in anergy
Cd28
Activated transcription factor in the expression of CD4 and CD25 for the maintenance of immune tolerance
FoxP3
Inhibits t cell activation and t cell effector functions
IL-10
Proapoptotic factor of the Bcl-2 family
Bim
Genes that cause B cells to Acquire new specificity
RAG1, RAG2