Prevention of the induction of allospecific cytotoxic T lymphocyte and delayed-type hypersensitivity responses by ultraviolet irradiation of corneal allografts

J. Y. Niederkorn, D. Callanan, J. R. Ross

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The effect of ultraviolet radiation (UVR) on the immunogenicity of corneal allografts was examined in a mouse model. Corneal allografts differing from the host at the entire MHC and multiple minor H loci were subjected to 200 mJ/cm2 of UVB irradiation immediately prior to heterotopic transplantation. Analysis of cytotoxic T lymphocyte and delayed-type hypersensitivity responses revealed that UVR treated corneal grafts failed to induce either CTL or DTH responses in C57BL/6 recipients. UVB treatment abolished the immunogenicity of highly immunogenic corneal grafts containing either resident or infiltrating donor-specific Langerhans cells. Sequential grafting experiments demonstrated that UVB-treated grafts rendered the hosts anergic to subsequent immunization with highly immunogenic corneal limbus grafts that contained dense concentrations of Ia+ Langerhans cells of donor origin. The results indicate that UV treatment not only reduces the immunogenicity of the corneal allograft but may also render it tolerogenic.

Original languageEnglish (US)
Pages (from-to)281-286
Number of pages6
Issue number2
Publication statusPublished - 1990


ASJC Scopus subject areas

  • Immunology
  • Transplantation

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