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Interleukin-1 abrogates anterior chamber-associated immune deviation.
1Graduate Program in Immunology, University of Texas Southwestern Medical Center, Dallas 75235-9057.
Investigative Ophthalmology & Visual Science
|October 1, 1990
Summary
Interleukin-1 (IL-1) deficiency is crucial for anterior chamber-associated immune deviation (ACAID) and immune privilege in the eye. Introducing IL-1 prevents ACAID, suggesting its role in immune tolerance within the anterior chamber.
Area of Science:
- Ophthalmology
- Immunology
- Cell Biology
Background:
- Anterior chamber-associated immune deviation (ACAID) causes antigen-specific suppression of immune responses and impairs allograft rejection within the eye.
- ACAID is the mechanism behind the eye's immune privilege, potentially due to a lack of interleukin-2 (IL-2) during antigen presentation.
- The role of interleukin-1 (IL-1) in ACAID induction and immune privilege remains to be fully elucidated.
Purpose of the Study:
- To investigate the role of IL-1 in the induction of ACAID.
- To determine if IL-1 influences the immune-privileged status of the anterior chamber of the eye.
Main Methods:
- Intracameral (IC) inoculation of DBA/2 mastocytoma cells (P815) into allogeneic BALB/c recipients to induce ACAID.
- Utilized sublines of P388D1 (DBA/2 monocyte/macrophage tumor) that produce IL-1.
- Systemic administration of exogenous IL-1 via subcutaneous miniosmotic pumps.
Main Results:
- P388D1 sublines producing IL-1 did not grow progressively in the anterior chamber and prevented DTH suppression.
- Systemic IL-1 administration prevented ACAID induction in hosts receiving IC P815 cells.
- These findings indicate a significant role for IL-1 in modulating ACAID.
Conclusions:
- The induction of ACAID and the immune privilege of the anterior chamber are dependent on IL-1 deficiency during alloantigen processing.
- IL-1 appears to be a critical factor in regulating immune responses within the eye.