MiRNA Real-time quantitative PCR analysis of EAE CD4+T cells
Ontology highlight
ABSTRACT:
ORGANISM(S): Mus musculus
SUBMITTER: Nan Shen
PROVIDER: E-GEOD-66621 | biostudies-arrayexpress |
REPOSITORIES: biostudies-arrayexpress
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Project description:EAE is a mouse model of human multiple sclerosis. We used miRNA low density array to screen abnormally expressed miRNAs in autoimmune CD4+T cells.Generally, splenic CD4+T cells were isolated from three groups: healthy C57BL/6 mice, C57BL/6 mice with the induction of EAE for 16 days, and C57BL/6 mice with the induction of EAE for 32 days. Then we did miRNA profilings on these samples.
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2012-12-19 | E-GEOD-37424 | biostudies-arrayexpress
Project description:Cancer staging and treatment frequently assume a binary division of tumors into localized or metastatic cancers. We proposed a state of metastatic disease defined by the number of metastases termed oligometastases. Patients with oligometastatic disease may be cured with localized methods of cancer treatment. We analyzed miRNA expression from paraffin blocks of primary or metastatic tumor samples derived from oligometastatic (? 5 metastases) patients treated with high dose localized radiotherapy. We report patterns of miRNA expression in the metastatic and primary tumor samples that identify patients who failed to progress to widespread polymetastases. We created a model of oligometastases of human tumors in immune compromised mice. The miRNA patterns of gene expression derived from patients accurately identified oligometastatic patterns in the mouse model as compared to animals that developed widespread metastases. MiRNA signatures may identify patients most likely to benefit from aggressive curative treatment of limited metastatic disease. Injection of MDA-MB-435-GFP cancer cells into the mammary fat pad of female athymic mice to develop spontaneous macroscopic lung metastasis. Tail vein experimental lung colonization assay was performed to model the development of MDA-MB-435-GFP Oligo- or Poly-metastases in the lung in vivo. Cell lines: Total RNA were derived from MDA-MB-435-L1-GFP (Ol-like) or MDA-MB-435-L1Mic (Poly-like) cell lines.
2010-12-09 | E-GEOD-25967 | biostudies-arrayexpress
Project description:Purpose: To elucidate the potential immune-regulatory mechanism of TRAIL of activated T cells in EAE, we analyzed gene expression profiles of splenic CD4+ T cells from EAE mice treated with TRAIL by RNA sequencing and transcriptome analysis. Methods: Splenic CD4+ T cell mRNA profiles of control or EAE mice treated with vehicle or TRAIL were generated by deep sequencing using Illumina Solexa. Library construction of all samples were used by Agilent's SureSelect Strand Specific RNA Library Preparation Kit for 75SE (Single-End or Paired-End) sequencing on Solexa platform. The sequence was directly determined using sequencing-by-synthesis technology via the TruSeq SBS Kit. Raw sequences were obtained from the Illumina Pipeline software bcl2fastq v2.0 and expected to generate 20M (million reads or Gb) per sample. Results: By comparing mRNA exression of splenic CD4+ T cells from EAE mice treated with vehicle or TRAIL, there were 244 genes significantly differentially expressed. By analyzing these 244 significant genes categorized by a Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis, the most significantly enriched category for CD4+ T cells was “cell cycle” (multiple of enrichment: 3.13, p = 1.64 × 10−5) followed by “TCR signaling pathway” (multiple of enrichment: 2.80, p = 8.25 × 10−4). In addition, significant genes in the“TCR signaling pathway” tended to be downregulated while those in “cell cycle”tended to be upregulated in a volcano plot analysis. Consistent with the volcano plot results, by using unsupervised hierarchical clustering, the heatmap showed that significant TCR signaling pathway-associated genes were downregulated, while significant cell cycle-associated genes were upregulated in splenic CD4+ T cells from EAE mice treated with TRAIL Conclusions: Our study demonstrated the gene transcription pattern from CD4+ T cells of TRAIL-treated EAE mice were involved in distinct TCR signaling and cell cycle pathways.
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2011-11-03 | E-GEOD-24694 | biostudies-arrayexpress
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2014-07-09 | E-GEOD-55189 | biostudies-arrayexpress
Project description:MicroRNAs are small non-coding RNA molecules that regulate the post-transcriptional expression of target genes. In addition to being involved in many biologic processes including development, cell differentiation, proliferation, and apoptosis, microRNAs are important regulators in innate and adaptive immune responses. Distinct sets of expressed miRNAs are found in different cell types and tissues and aberrant expression of microRNAs is associated with many disease states. MicroRNA expression was examined in a model of heterotopic heart transplantation by microarray analyses and a unique profile was detected in rejecting allogeneic transplants (BALB/C to C57BL/6) as compared to syngeneic transplants (C57BL/6 to C57BL/6). The microRNA miR-182 was significantly increased in rejecting cardiac allografts and in mononuclear cells that infiltrate the grafts. Forkhead Box (FOX) proteins are a family of important transcription factors and FOXO1 is a target of miR-182. As miR-182 increases after transplant, there is a concomitant post-transcriptional decrease in FOXO1 expression in heart allografts that is localized to both the cardiomyocytes and CD3+ T cells. The microRNA miR-182 is significantly increased in both PBMC and plasma during graft rejection suggesting potential as a biomarker of graft status. Our results identify microRNAs that may regulate alloimmune responses and graft outcomes. In total 14 microRNA microarrays data. For heart graft: each sample column corresponds to the expression profile of 3 pooled syngeneic or 3 pooled allogeneic heart grafts or 3 pooled normal heart. For graft infiltrating lymphocytes (GILs): each sample column corresponds to the expression profile of 3 pooled syngeneic or 3 pooled allogeneic GILs or 3 pooled normal PBMC.
2012-12-30 | E-GEOD-32545 | biostudies-arrayexpress
Project description:In this study we determined whole genome gene expression of murine naive CD4+ T cells, in vitro differentiated Th17 cells, and CD4+ T cells isolated from experimental autoimmune encephalitomyelitis (EAE)-affected animals either after adoptive transfer of Th17 cells or after immunization with MOG35-55-peptide. The overall goal was to identify candidate genes involved in T cell pathology, encephalitogenicity and plasticity. These findings could then be correlated to multiple sclerosis pathology. Naive CD4+ T cells were isolated from B6.2d2 transgenic mice with MOG-specific T cell receptors and differentiated in vitro into Th17 cells. These Th17 cells were adoptively transferred into lymphopenic RAG1-/- mice to induce EAE. Further, EAE was induced by immunizing wild-type C57BL/6 mice with MOG35-55 peptide. RNA was extracted from naive CD4+ T cells, Th17 cells, and from CD4+ T cells isolated from the CNS of EAE-affected mice for gene expression analysis. Replicates from three independent experiments were analyzed.
2015-02-26 | E-GEOD-57098 | biostudies-arrayexpress
Project description:Cancer staging and treatment frequently assume a binary division of tumors into localized or metastatic cancers. We proposed a state of metastatic disease defined by the number of metastases termed oligometastases. Patients with oligometastatic disease may be cured with localized methods of cancer treatment. We analyzed miRNA expression from paraffin blocks of primary or metastatic tumor samples derived from oligometastatic (≤ 5 metastases) patients treated with high dose localized radiotherapy. We report patterns of miRNA expression in the metastatic and primary tumor samples that identify patients who failed to progress to widespread polymetastases. We created a model of oligometastases of human tumors in immune compromised mice. The miRNA patterns of gene expression derived from patients accurately identified oligometastatic patterns in the mouse model as compared to animals that developed widespread metastases. MiRNA signatures may identify patients most likely to benefit from aggressive curative treatment of limited metastatic disease. Tissues: We collected samples from 5 patients with both primary and metastatic tumors available for analysis, 20 patients with primary tumors only, and 9 patients with metastatic tumors only. Eleven of these patients were analyzed retrospectively, while 23 patients were included prospectively from a previously reported radiotherapy protocol for oligometastatsis. Total RNA were derived from FFPE primary and metastatic tissue samples.
2010-11-25 | E-GEOD-25552 | biostudies-arrayexpress
Project description:Background: The emerging relationship between microRNAs (miRNA) and viral-control is a topic of interest in the field of HIV. Host-genome might play an important role in the control of viremia. The aim of this study was to assess the specific miRNA profile that could contribute to the control of HIV replication in Elite Controllers. Results: After adequate normalization, expression profile of 286 human miRNAs (hsa-miR) was evaluated in 29 individuals classified in 4 groups: 8 elite controllers (EC; viral load <50 cp/ml without treatment), 8 viremic progressors (VP; VL>5000 cp/ml without treatment), 8 patients under antiretroviral treatment (ART; VL<200cp/ml) and 5 uninfected individuals (HIV-) through TaqMan® Array Human microRNA Cards v3.0. A differential expression pattern consisting of 23 miRNAs overcame significantly different when comparing EC and VP. Profiling analysis segregated the population in two different blocks: while EC and HIV- clustered together in the same block (EC/HIV-_block 1), VP and ART individuals clustered together in a second block (VP/ART_block 2). Two inversely expressed miRNA patterns were determined within those two blocks: a set of 4 miRNAs (hsa-miR-221, -27a, -27b and -29b) was up-expressed in EC/HIV-_block and down-expressed in VP/ART_block while 19 miRNAs were down-expressed in block 1 and up-expressed in block 2. Differential miRNAs were successfully validated through individual RT-qPCR assays. Conclusions: Profile in EC resembled HIV- and differentially clusters with VP and ART. Therefore, differential clustering does not rely on undetectable viremia. Peripheral blood mononuclear cell samples were from five uninfected controls, eight viremic HIV-1-infected patients, eight HIV-1 elite controllers with undetectable viral load and eight HIV-1antiretroviral treated individuals with undetectable viral load.
2014-05-06 | E-GEOD-57323 | biostudies-arrayexpress