Retinal pigment epithelium-immune system interactions: Cytokine production and cytokine-induced changes

G.M. Holtkamp, A. Kijlstra, R. Peek, A.F. de Vos

    Research output: Contribution to journalArticleAcademicpeer-review

    169 Citations (Scopus)

    Abstract

    Vision is dependent on proper function of several intraocular structures. Immune responses to eliminate invading pathogens from the eye may threat vision by causing damage to these structures. Therefore, immunological defence of the eye should be carefully balanced between efficacy and maintenance of functional integrity. The eye is equipped with several regulatory mechanisms to prevent certain immune and inflammatory responses and is, therefore, regarded as an immune privileged site. The retinal pigment epithelium (RPE) contributes to the immune privileged status of the eye as part of the blood-eye barrier and by the secretion of immunosuppressive factors inside the eye. RPE cells, however, may also play an important role in the development of immune and inflammatory responses in the posterior part of the eye. During the last decade it has become clear that RPE cells are highly sensitive to a variety of inflammatory cytokines. Under inflammatory conditions, RPE cells produce a myriad of cytokines that may activate the resident ocular cells or attract and activate leukocytes. Cytokine stimulation of RPE cells causes profound effects, including nitric oxide secretion, cell surface expression of MHC class II and adhesion molecules and abrogation of barrier function. This article provides a comprehensive review of the literature concerning RPE cells and cytokines. (C) 2000 Elsevier Science Ltd.
    Original languageEnglish
    Pages (from-to)29-48
    JournalProgress in Retinal and Eye Research
    Volume20
    Issue number1
    DOIs
    Publication statusPublished - 2001

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