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Transcriptome comparison of human Extra-thymic AIRE expressing cells to medullary thymic epithelial cells and conventional antigen presenting dendritic cells.

ABSTRACT: Transcriptome comparison of human Extra-thymic AIRE expressing cells to medullary thymic epithelial cells and conventional antigen presenting dendritic cells.

PROVIDER: PRJEB29599 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	ERR2882510.fastq.gz	Fastqsanger.gz
	ERR2882520.fastq.gz	Fastqsanger.gz
	ERR2882511.fastq.gz	Fastqsanger.gz
	ERR2882512.fastq.gz	Fastqsanger.gz
	ERR2882513.fastq.gz	Fastqsanger.gz

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Transcriptional regulation by Aire in medullary thymic epithelial cells revisited

Project description:The deficiency of Aire, a transcriptional regulator whose defect results in the development of autoimmunity, is associated with reduced expression of tissue-restricted self-Ags (TRAs) in medullary thymic epithelial cells (mTECs). Although the mechanisms underlying Aire-dependent expression of TRAs need to be explored, the physical identification of the target(s) of Aire has been hampered by the low and promiscuous expression of TRAs. We have tackled this issue by engineering mice with augmented Aire expression. Integration of the transcriptomic data from Aire-augmented and Aire-deficient mTECs revealed that a large proportion of so-called Aire-dependent genes, including those of TRAs, may not be direct transcriptional targets downstream of Aire. Rather, Aire induces TRA expression indirectly through controlling the heterogeneity of mTECs, as revealed by single-cell analyses. In contrast, Ccl25 emerged as a canonical target of Aire, and we verified this both in vitro and in vivo. Our approach has illuminated the Aire?s primary targets while distinguishing them from the secondary targets.

2021-10-13 | GSE155331 | GEO

microRNA expression profile of medullary thymic epithelial cells - mTEC 3.10 strain - submitted of in vitro Aire knockdown - siRNA silencing-

Project description:The oligo microarrays were used to determine microRNA expression profiles of medullary thymic epithelial cells (mTECs) submitted of in vitro Aire Knockdown (siRNA silencing).

2012-08-21 | E-MEXP-3359 | biostudies-arrayexpress

Stability of Aire-upregulated and Aire-neutral transcripts in medullary thymic epithelial cells

Project description:Stability of Aire-upregulated and Aire-neutral transcripts in medullary thymic epithelial cells

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Expression data from cortical thymic epithelial cells ectopically expressing Aire

Project description:Aire in medullary thymic epithelial cells plays an essential role in the negative selection through expression of broad arrays of tissue-restricted antigens. We asked whether Aire could also activate the expression of tissue-restricted antigens in cortical thymic epithelial cells. We established a semi-knockin strain of NOD-background mice expressing Aire under control of the promoter of β5t, a thymoproteasome expressed exclusively in the cortex. We extracted RNA from cortical thymic epithelial cells ectopically expressing Aire and hybridization was performed on Affymetrix. microarrays.

2015-08-03 | E-GEOD-70326 | biostudies-arrayexpress

Expression data from cortical thymic epithelial cells ectopically expressing Aire

2015-08-03 | GSE70326 | GEO

Transcriptional regulation by Aire in medullary thymic epithelial cells revisited

Project description:Transcriptional regulation by Aire in medullary thymic epithelial cells revisited

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The role of Autoimmune regulator (Aire) gene in the control of adhesion between medullary thymic epithelial cells and thymocytes

Project description:The crosstalk between thymocytes and thymic epithelial cells is critical for T cell development and establishment of central tolerance. Although the role of Autoimmune Regulator (Aire) gene in the induction of central tolerance is well known, the precise cellular and molecular mechanisms by which Aire controls the ectopic expression of tissue restricted antigens (TRAs) in medullary thymic epithelial cells (mTECS) remain unclear. In this study we performed a functional assay with fresh thymocytes dissociated from a normal mouse thymus co-cultured with a Mus musculus mTEC cell line - named 3.10 mTEC line - , in which we had previously knocked-down Aire gene by means of siRNA transfection. Agilent Mouse Gene Expression microarrays were used to determine the large scale transcriptional expression profiles of control and Aire-knockdown 3.10 mTECs co-cultured with thymocytes.

2016-06-27 | E-MTAB-4595 | biostudies-arrayexpress

Lymphtoxin pathway effects on thymic medullary epithelial cells

Project description:We compared gene expression profiles of lymphotoxin alpha- and lymphtoxin beta receptor-deficient thymic medullary epithelial cells with their wild-type littermates, as well as with Aire-deficient and wild-type littermates. This was done in order to determine whether there was overlap in the effects of lymphotoxin and aire. Keywords: genetic modification

2007-10-23 | GSE8563 | GEO

ATAC-seq profiling of medullary thymic epithelial cells from wildtype and Kat7-knockout mice

Project description:Thymic epithelial cells govern thymic T lymphocyte differentiation and selection. Medullary TECs (mTECs) facilitate the negative selection of self-reactive thymocytes and the differentiation of FOXP3+ regulatory T cells. Medullary TECs are also distinctive for their “promiscuous” gene expression, transcribing thousands of peripheral tissue genes (PTG) that are otherwise only expressed highly in one or two other organs. Much of this PTG expression by mTECs is controlled by the autoimmune regulator, AIRE. To probe the mechanism by which KAT7 promotes AIRE function, we performed ATAC-seq to compare chromatin accessibility in MHCII-high medullary thymic epithelial cells from Kat7-knockout and wildtype mice.

2021-12-21 | GSE188868 | GEO

RNA-seq of medullary thymic epithelial cell (mTEC) subsets in inducible Aire-lineage tracing mice

Project description:The goal of the study was to sequence mRNA expression from sorted medullary thymic epithelial cell (mTEC) subsets in inducible Aire-CreERT2.R26-Stopfl-tdTomato lineage tracing mice after a pulse chase. Four cell subsets were sorted 7 days after a single 2mg pulse of tamoxifen administered by oral gavage. 4 biological replicates (1,2,3,4) were collected derived from 12 pooled thymi per replicate. From the DAPI-;CD45-;EpCAM+ TEC pool, cells were sorted as: pre-Aire (MHCIIlo;RFP-), early-Aire (MHCIIhi;RFP-), late-Aire (MHCIIhi;RFP+), and post-Aire (MHCIIlo;RFP+). The data were used to identify differentially expressed genes across the four mTEC subsets to examine mTEC heterogeneity and identify novel mTEC subpopulations.

2018-05-19 | GSE114651 | GEO

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