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Loss of B cell Tolerance is TCR Dependent [IgG CTD array]

ABSTRACT: Loss of B cell Tolerance is TCR Dependent [IgG CTD array]

PROVIDER: PRJNA967703 | ENA |

REPOSITORIES: ENA

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Loss of B cell Tolerance is TCR Dependent [IgG CTD array]

Project description:We used protein arrays to measure IgG autoantibodies associated with Connective Tissue Diseases (CTDs) from retrogenic chimeras Sera was isolated from irradiated Icos-/-;CD45.1 mice reconstituted with 564Igi;Icos-/- bone marrow mixed with Icos-/-;CD45.1 bone marrow and WT bone marrow (BMchim.564) or retrogenic HSCs expressing TCR-A (BMchim.564-Icos.RAG-TCRA), TCR-B (BMchim.564-Icos.RAG-TCRB), or TCR-C (BMchim.564-Icos.RAG-TCRC). 564Igi (564homo) and 564Igi;Icos-/- (564homo.Icos) sera were included as controls.

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Loss of B cell Tolerance is TCR Dependent [IgG2a CTD array]

Project description:Loss of B cell Tolerance is TCR Dependent [IgG2a CTD array]

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Loss of B cell Tolerance is TCR Dependent [IgG2c CTD array]

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Loss of B cell Tolerance is TCR Dependent [IgG2c CTD array]

Project description:We used protein arrays to measure IgG2c autoantibodies associated with Connective Tissue Diseases (CTDs) from retrogenic chimeras Sera was isolated from irradiated Icos-/-;CD45.1 mice reconstituted with 564Igi;Icos-/- bone marrow mixed with Icos-/-;CD45.1 bone marrow and WT bone marrow (BMchim.564) or retrogenic HSCs expressing TCR-A (BMchim.564-Icos.RAG-TCRA), TCR-B (BMchim.564-Icos.RAG-TCRB), or TCR-C (BMchim.564-Icos.RAG-TCRC). 564Igi (564homo) and 564Igi;Icos-/- (564homo.Icos) sera were included as controls.

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Project description:We used protein arrays to measure IgG2a autoantibodies associated with Connective Tissue Diseases (CTDs) from retrogenic chimeras Sera was isolated from irradiated Icos-/-;CD45.1 mice reconstituted with 564Igi;Icos-/- bone marrow mixed with Icos-/-;CD45.1 bone marrow and WT bone marrow (BMchim.564) or retrogenic HSCs expressing TCR-A (BMchim.564-Icos.RAG-TCRA), TCR-B (BMchim.564-Icos.RAG-TCRB), or TCR-C (BMchim.564-Icos.RAG-TCRC). 564Igi (564homo) and 564Igi;Icos-/- (564homo.Icos) sera were included as controls.

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Loss of B cell Tolerance is TCR Dependent

Project description:Loss of B cell Tolerance is TCR Dependent

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Loss of B cell Tolerance is TCR Dependent [amplicon-seq]

Project description:Loss of B cell Tolerance is TCR Dependent [amplicon-seq]

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Loss of B cell Tolerance is TCR Dependent [amplicon-seq]

Project description:We tested orphan TCR autoreactivity using the peptide MHC-TCR chimeric receptor (MCR) co-culture system. In this system, cognate antigen recognition leads to TCR specific NFAT activation in MCR reporter cells expressing a mouse I-Ab MHC class II extracellular domain covalently linked to candidate peptides and an intracellular TCR signaling domain. We used mixed autoimmune bone marrow chimera spleens and kidneys as sources of cDNA to generate a transcriptome-wide library of natural autoantigen peptides . We cloned this cDNA-derived peptide (CDP) autoantigen library into the MCR retroviral backbone and transduced NFAT reporter cells to make a murine autoantigen MCR reporter library (MCR-Lib). We then used this library to screen orphan TCRs identified by scTCR-seq for autoreactivity.

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Analysis of gene expression profiles from alloreactive TCR-Tg CD8 T cells during activation and induction of tolerance

Project description:RNA-seq was used to evaluate transcriptional changes in alloreactive TCR-Tg CD8 T cells during activation and tolerance induction. CBA mice were exposed to a low dose whole body irradiation and then injected with bone marrow from TCR-Tg KB5 mice to generate synchimeric mice. The KB5 TCR recognizes alloantigens from H2b MHC molecules, specifically Kb, that are expressed by C57BL/6 mice. The injection of bone marrow from KB5 mice into CBA mice enables the development of small and traceable population of TCR-Tg KB5 CD8 T cells. A clonotypic antibody specific for the KB5 TCR allows these cells to be monitored and sorted from the periphery of synchimeric mice by flow cytometry. KB5 CD8 T cells were purified by sorting cells from synchimeric mice under the following conditions: 1) not exposed to alloantigens and in a naïve state, 2) exposed to H2b antigens from C57BL/6 mice to activate the KB5 CD8 T cells, 3) exposed to H2b antigens in the presence of anti-CD154 that blocks costimulatory signals and induces transplantation tolerance, or 4) treated with alloantigens, anti-CD154 and LPS, that induces an inflammatory response and abrogates the induction of tolerance. KB5 CD8 T cells were FACS purified to a level of greater than 95%, RNA was recovered from the purified cells and RNA-seq was performed on triplicate samples from 3 independent experiments. Overall, the analyses revealed expression changes for a number of genes that regulate immune responses and inflammation, cell proliferation and immune cell homing.

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Chromatin immunopreciptitation of Drosophila DNA using antibodies against RMA polymerase II CTD repeats

Project description:Crosslinked chromatin from wild type flies was sonicated into small fragments, and used in ChIP reactions using a monoclonal antibody, 8WG16, against RNA polymerase II CTD repeats. Input material was removed prior to chIP, and a control chIP was incubated with normal rabbit IgG. The Input and IPed DNA was purified, amplified, and hybridized to Affymetrix Drosophila genomic tiling arrays.

2008-05-20 | E-MEXP-1520 | biostudies-arrayexpress

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