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Title: Transcription profiling of mouse T cell response to ocular pigment epithelial cells - role of thrombospondin 1      
dateReleased:
06-13-2008
description:
Ocular pigment epithelium (PE) cells promote the generation of T regulators (PE-induced Treg cells). Moreover, T cells exposed to PE acquire the capacity to suppress the activation of bystander T cells via TGFbeta. Membrane-bound TGFbeta on iris PE cells interacts with TGFbeta receptors on T cells, leading to the conversion of T cells to CD8(+) Treg cells via a cell contact-dependent mechanism. Conversely, soluble forms of TGFbeta produced by retinal PE cells can convert CD4(+) T cells into Treg cells in a manner that is independent of cell contact. In this study, we looked at the expression of immunoregulatory factors (TGFbeta, thrombospondins, CD59, IL-1 receptor antagonist, etc.) in PE cells as identified via an oligonucleotide microarray. Several thrombospondin-binding molecules were detected, and thus we focused subsequent analyses on thrombospondins. Via the conversion of latent TGFbeta to an active form that appears to be mediated by thrombospondin 1 (TSP-1), cultured iris PE and retinal PE cells induce a PE-induced Treg cell fate. After conversion, both ocular PE and PE-induced Treg cells express TSP-1. Regulatory T cell generation was amplified when the T cells also expressed TSP-1. In addition, PE-induced Treg cells significantly suppressed activation of bystander T cells via TSP-1. These results strongly suggest that the ability of ocular PE and PE-induced Treg cells to suppress bystander T cells depends on their capacity to produce TSP-1. Thus, intraocular TSP-1 produced by both ocular parenchymal cells and regulatory T cells is essential for immune regulation in the eye. Experiment Overall Design: Comparison of gene expression pattern in Mouse Primary Cultured Cell Lines (RPE, IPE, CBPE). Experiment Overall Design: Adult (6- to 8-week-old) C57BL/6 purchased from CLEA Japan Inc. (Tokyo, Japan) were used as donors ocular pigment epithelium (PE). To cultivate iris PE (IPE) and ciliary body PE (CBPE), iris and ciliary body tissues in the eyes were dissected out, and then incubated in 1 mg/ml Dispase and 0.05 mg/ml DNase I (both from Boehringer-Mannheim, Mannheim, Germany) for 1 hr. To cultivate retinal PE (RPE) Eyes were cut into two parts along a circumferential line posterior to the ciliary process, creating a ciliary body-deficient posterior eyecup. The eyecup was then incubated in 0.2% trypsin (Biowhitaker) for 1 hr. These tissues were triturated to make a single cell suspension, and then re-suspended in the medium.
privacy:
not applicable
aggregation:
instance of dataset
ID:
E-GEOD-5134
refinement:
raw
alternateIdentifiers:
5134
dateSubmitted:
06-23-2006
keywords:
functional genomics
dateModified:
03-27-2012
creators:
Yuri Futagami
availability:
available
types:
gene expression
name:
Mus musculus
name:
unknown experiment type
ID:
A-AFFY-45
name:
Affymetrix GeneChip Mouse Genome 430 2.0 [Mouse430_2]
accessURL: https://www.ebi.ac.uk/arrayexpress/files/E-GEOD-5134/E-GEOD-5134.raw.1.zip
storedIn:
ArrayExpress
qualifier:
gzip compressed
format:
TXT
accessType:
download
authentication:
none
authorization:
none
accessURL: https://www.ebi.ac.uk/arrayexpress/files/E-GEOD-5134/E-GEOD-5134.processed.1.zip
storedIn:
ArrayExpress
qualifier:
gzip compressed
format:
TXT
accessType:
download
authentication:
none
authorization:
none
accessURL: https://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSE5134
storedIn:
Gene Expression Omnibus
qualifier:
not compressed
format:
HTML
accessType:
landing page
primary:
true
authentication:
none
authorization:
none
abbreviation:
EBI
homePage: http://www.ebi.ac.uk/
ID:
SCR:004727
name:
European Bioinformatics Institute
homePage: https://www.ebi.ac.uk/arrayexpress/
ID:
SCR:002964
name:
ArrayExpress