Retinal pigment epithelial cells upregulate expression of complement factors after co-culture with activated T cells

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Helene Bæk Juel, Charlotte Kaestel, Lasse Folkersen, Carsten Faber, Niels Henrik Helweg Heegaard, Rehannah Borup, Mogens Holst Nissen

In this study we examined the effect of T cell-derived cytokines on retinal pigment epithelial (RPE) cells with respect to expression of complement components. We used an in vitro co-culture system in which CD3/CD28-activated human T cells were separated from the human RPE cell line (ARPE-19) by a membrane. Differential gene expression in the RPE cells of complement factor genes was identified using gene arrays, and selected gene transcripts were validated by q-RT-PCR. Protein expression was determined by ELISA and immunoblotting. Co-culture with activated T cells increased RPE mRNA and/or protein expression of complement components C3, factors B, H, H-like 1, CD46, CD55, CD59, and clusterin, in a dose-dependent manner. Soluble factors derived from activated T cells are capable of increasing expression of complement components in RPE cells. This is important for the further understanding of inflammatory ocular diseases such as uveitis and age-related macular degeneration.


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Original languageEnglish
JournalExperimental Eye Research
Volume92
Issue number3
Pages (from-to)180-88
ISSN0014-4835
DOIs
Publication statusPublished - 2011

ID: 38304547