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- W2892596247 abstract "Purpose: Severing of corneal nerves in preparation of corneal transplantation abolishes immune privilege of subsequent corneal transplants placed into either eye: a phenomenon termed sympathetic loss of immune privilege (SLIP). SLIP is due to the disabling of T regulatory cells (Tregs) by CD11c+ contrasuppressor (CS) cells. This study characterized the induction, function, and manipulation of CS cell activity and the effect of these cells on Tregs induced by anterior chamber-associated immune deviation (ACAID). Methods: CS cells were induced using a 2.0-mm trephine to score the corneal epithelium. CD11c+ CS cells were evaluated by adoptive transfer and by their capacity to disable CD8+ ACAID Tregs in local adoptive transfer (LAT) of suppression assays. CD11c+ cells were deleted from the ocular surface by subconjunctival injection of clodronate-containing liposomes. Results: CD11c+ CS cell were radiosenstive and long lived. As few as 1000 CS cells blocked the suppressive activity of previously generated CD8+ ACAID Tregs, indicating that CS cells act at the efferent arm of the immune response. Depletion of resident CD11c+ cells at the ocular surface prevented the generation of CS cells. Conclusions: Corneal nerve injury that occurs during keratoplasty converts ocular surface CD11c+ cells into CS cells that block CD8+ Tregs, which are induced by introducing antigens into the anterior chamber (i.e., ACAID Tregs). Depletion of CD11c+ cells at the ocular surface prevents the generation of CS cells and may be a useful strategy for preventing SLIP and enhancing the survival of second corneal transplants." @default.
- W2892596247 created "2018-10-05" @default.
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- W2892596247 date "2018-09-28" @default.
- W2892596247 modified "2023-09-26" @default.
- W2892596247 title "Induction of Contrasuppressor Cells and Loss of Immune Privilege Produced by Corneal Nerve Ablation" @default.
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- W2892596247 doi "https://doi.org/10.1167/iovs.18-24894" @default.
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