PMID- 27918831 OWN - NLM STAT- MEDLINE DCOM- 20170615 LR - 20220129 IS - 1552-5783 (Electronic) IS - 0146-0404 (Linking) VI - 57 IP - 15 DP - 2016 Dec 1 TI - Induction of Chemokine Secretion and Monocyte Migration by Human Choroidal Melanocytes in Response to Proinflammatory Cytokines. PG - 6568-6579 LID - 10.1167/iovs.15-18524 [doi] AB - PURPOSE: To determine to which extent inflammatory cytokines affect chemokine secretion by primary human choroidal melanocytes (HCMs), their capacity to attract monocytes, and whether HCMs are able to influence the proliferation of activated T cells. METHODS: Primary cultures of HCMs were established from eyes of 13 donors. Human choroidal melanocytes were stimulated with IFN-gamma and TNF-alpha or with supernatant from activated T cells (T-cell-conditioned media [TCM]). Gene expression analysis was performed by using microarrays. Protein levels were quantified with ELISA or cytometric bead array. Supernatants of HCMs were assessed for the capability to attract monocytes in a transwell plate. Proliferation of activated T cells was assessed in a direct coculture with HCMs by a [3H]-thymidine incorporation assay. RESULTS: Stimulation of HCMs with TCM or IFN-gamma and TNF-alpha resulted in increased expression and secretion of CXCL8, CXCL9, CXCL10, CXCL11, CCL2, CCL5 and intercellular adhesion molecule 1. Vascular endothelial growth factor and monocyte migration inhibitory factor were constitutively expressed without changes in response to proinflammatory cytokines. Supernatants derived from unstimulated cultures of 10 HCM donors induced a high initial level of monocyte migration, which decreased upon stimulation with either TCM or IFN-gamma and TNF-alpha. The supernatants from three HCM donors initially showed a low level of monocyte attraction, which increased after exposure to proinflammatory cytokines. Direct coculture of HCMs with T cells resulted in inhibition of T-cell proliferation. CONCLUSIONS: These results showed that normal and activated HCMs are immunologically active by secreting chemokines, and that HCMs are able to attract monocytes in addition to inhibiting T-cell proliferation. FAU - Jehs, Tina AU - Jehs T AD - University of Copenhagen, Department of Immunology and Microbiology, Eye Research Unit, Copenhagen, Denmark. FAU - Faber, Carsten AU - Faber C AD - University of Copenhagen, Department of Immunology and Microbiology, Eye Research Unit, Copenhagen, Denmark. FAU - Udsen, Maja S AU - Udsen MS AD - University of Copenhagen, Department of Immunology and Microbiology, Eye Research Unit, Copenhagen, Denmark. FAU - Jager, Martine J AU - Jager MJ AD - Department of Ophthalmology, Leiden University Medical Center, Leiden, The Netherlands. FAU - Clark, Simon J AU - Clark SJ AD - Centre for Ophthalmology and Vision Sciences, Institute of Human Development, AV Hill Building, University of Manchester, Manchester, United Kingdom. FAU - Nissen, Mogens H AU - Nissen MH AD - University of Copenhagen, Department of Immunology and Microbiology, Eye Research Unit, Copenhagen, Denmark. LA - eng GR - MR/K024418/1/MRC_/Medical Research Council/United Kingdom PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Invest Ophthalmol Vis Sci JT - Investigative ophthalmology & visual science JID - 7703701 RN - 0 (Chemokine CXCL9) RN - 0 (Culture Media, Conditioned) RN - 0 (Cytokines) RN - Uveal melanoma SB - IM MH - Adolescent MH - Adult MH - Aged MH - Cell Movement MH - Cell Proliferation MH - Chemokine CXCL9/*metabolism MH - Choroid/metabolism/*pathology MH - Culture Media, Conditioned MH - Cytokines/*metabolism MH - Enzyme-Linked Immunosorbent Assay MH - Flow Cytometry MH - Humans MH - Melanocytes/*pathology MH - Melanoma/metabolism/*pathology MH - Middle Aged MH - Monocytes/*pathology MH - Photomicrography MH - Tumor Cells, Cultured MH - Uveal Neoplasms/metabolism/*pathology MH - Young Adult EDAT- 2016/12/06 06:00 MHDA- 2017/06/16 06:00 CRDT- 2016/12/06 06:00 PHST- 2016/12/06 06:00 [entrez] PHST- 2016/12/06 06:00 [pubmed] PHST- 2017/06/16 06:00 [medline] AID - 2589963 [pii] AID - 10.1167/iovs.15-18524 [doi] PST - ppublish SO - Invest Ophthalmol Vis Sci. 2016 Dec 1;57(15):6568-6579. doi: 10.1167/iovs.15-18524.