Qa-1, a nonclassical MHC molecule with immunomodulatory functions, is ubiquitously expressed in the immune-privileged anterior chamber of the eye.

Journal Article

PURPOSE: To determine whether the MHC class Ib gene, Qa-1, is expressed in the tissues that surround the immune-privileged anterior chamber (AC) of the murine eye. METHODS: Transcription of Qa-1 mRNA in BALB/c ocular tissues was analyzed by reverse transcription-polymerase chain reaction. Expression of Qa-1 protein was assessed on ocular frozen tissue sections by immunohistochemistry, and within aqueous humor by western blotting. RESULTS: Transcription of Qa-1 was found in all tissues surrounding the AC of the eye. Immunohistological staining revealed Qa-1 expression on corneal endothelium, corneal epithelium, and lens epithelium. No soluble Qa-1 was detected in aqueous humor. CONCLUSIONS: Qa-1, unlike other MHC class I molecules, is ubiquitously expressed in tissues surrounding the AC of the eye, raising the possibility that Qa-1 plays a role in creating and maintaining ocular immune privilege.

Full Text

Duke Authors

Cited Authors

  • Kim, CY; Masli, S; Streilein, JW

Published Date

  • July 2005

Published In

Volume / Issue

  • 13 / 4

Start / End Page

  • 271 - 277

PubMed ID

  • 16159717

International Standard Serial Number (ISSN)

  • 0927-3948

Digital Object Identifier (DOI)

  • 10.1080/09273940590951052

Language

  • eng

Conference Location

  • England