Cutting edge: Role of macrophage migration inhibitory factor in inhibiting NK cell activity and preserving immune privilege

R. S. Apte, D. Sinha, E. Mayhew, G. J. Wistow, J. Y. Niederkorn

Research output: Contribution to journalArticle

Abstract

The absence of MHC class I Ags on the corneal endothelium, which lines the anterior chamber of the eye, makes this cell layer potentially vulnerable to lysis by NK cells. However, aqueous humor (AH), which bathes the corneal endothelium, contains a 12-kDa protein which inhibits the NK-mediated lysis of corneal endothelial cells. An amino acid sequence analysis of AH revealed that this factor shared >90% homology with macrophage migration inhibitory factor (MIF). The NK inhibitory effect of AH was neutralized with anti-human MIF Ab. Moreover, mouse rMIF produced a similar inhibition of NK cell activity. However, neither rMIF nor AH inhibited the CTL-mediated lysis of allogeneic cells. rMIF prevented the release of perforin granules by NK cells but not CTLs. Although MIF displays proinflammatory properties, these results indicate that it can also inhibit at least one immune effector element, NK cells, and thereby contribute to immune privilege in the eye.

Original languageEnglish (US)
Pages (from-to)5693-5696
Number of pages4
JournalJournal of Immunology
Volume160
Issue number12
StatePublished - Jun 15 1998

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology

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    Apte, R. S., Sinha, D., Mayhew, E., Wistow, G. J., & Niederkorn, J. Y. (1998). Cutting edge: Role of macrophage migration inhibitory factor in inhibiting NK cell activity and preserving immune privilege. Journal of Immunology, 160(12), 5693-5696.