Mus musculus
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA335378 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Total RNA: 24h activated mouse OT-1 T lymphocytes, WT vs Lck-/- (OFF)
| PRJNA335377 | ENA
Project description:This experiment aims to study the transcriptome of naïve T cells at the steady state. A T cell receptor (TCR) transgenic mouse model (OT-1) posessing a homogenous alpha-beta CD8 T lymphocyte population was used, and cells with intact TCR signalling pathways (WT) were compared to those with defective signal transduction (Lck-/-, OFF). Naïve (CD8b+, CD44low) ex vivo T cells were isolated from the superficial cervicals, axillary, brachial, mesenteric, and inguinal lymph nodes. Total RNA was extracted from the cells, labelled with Cy3, and hybridised onto an Agilent-074809 SurePrint G3 Mouse GE v2 8x60K Microarray.
2016-11-30 | GSE84855 | GEO
Project description:In order to identify gene targets of translational regulation during T cell activation, a polysome analysis was performed in a T cell receptor (TCR) transgenic model (OT-1) possessing a homogenous alpha-beta CD8 T lymphocyte population. Cells with defective TCR signal tranduction (Lck-/-, OFF) were compared to WT cells to visualise targets regulated by TCR signalling. Total cytoplasmic ribonucleoprotein was extracted from ex vivo OT-1 transgenic T lymphocytes stimulated with SIINFEKL peptide antigen for 24h, extracts were fractionated using a sucrose density gradient, and separated into a sub-polysomal and a polysomal fraction. Total RNA from each fraction was extracted, equal volume of RNA from each fraction was individually labelled (Sub-poly: Cy3; Poly: Cy5), and hybridised onto a Agilent SurePrint G3 Mouse GE v2 8x60K Microarray.
2016-11-30 | GSE84781 | GEO
Project description:This experiment aims to study the transcriptome of activated T cells at 24h, using the same biological samples as the polysome profiling in GSE84781. A T cell receptor (TCR) transgenic mouse model (OT-1) posessing a homogenous alpha-beta CD8 T lymphocyte population was used, and cells with intact TCR signalling pathways (WT) were compared to those with defective signal transduction (Lck-/-, OFF). Ex vivo OT-1 T cells were isolated from the superficial cervicals, axillary, brachial, mesenteric, and inguinal lymph nodes and then activated for 24h with cognate peptide antigen SIINFEKL. Total RNA was extracted from the cells, labelled with Cy3, and hybridised onto an Agilent-074809 SurePrint G3 Mouse GE v2 8x60K Microarray.
2016-11-30 | GSE84856 | GEO
Project description:Polysome profiling: Mouse OT-1 T cells WT vs Lck-/- (OFF)
| PRJNA331134 | ENA
Project description:We compared the transcriptional profile of FACS-purified total effector, KLRG1+ effector and KLRG1- effector Lck-Cre;Ptpn2fl/fl and Ptpn2fl/fl OT-I cells from spleens of acutely infected mice. As expected, we found a large number of differentially expressed genes (DEG; |log2(fold-change)| >1; false discovery rate <0.05) between KLRG1– and KLRG1+ subsets of both Lck-Cre;Ptpn2fl/fl (712 DEG) and Ptpn2fl/fl (528 DEG) OT-I cells. Furthermore, we found 190 DEGs between total populations of Ptpn2-deficient and control OT-I cells. Considerably fewer genes were differentially expressed between Lck-Cre;Ptpn2fl/fl and Ptpn2fl/fl OT-I cells amongst the KLRG1– (93 DEG) and KLRG1+ (59 DEG) subsets. Hierarchical clustering analysis further revealed clustering of KLRG1– cells of both genotypes with total Ptpn2fl/fl OT-I cells, whereas KLRG1+ cells of both genotypes clustered with total Lck-Cre;Ptpn2fl/fl OT-I cells. Gene set enrichment analysis further showed that differential gene profiles between Lck-Cre;Ptpn2fl/fl and Ptpn2fl/fl OT-I cells for all subfractions (total, KLRG1+, KLRG1–) were enriched significantly for previously identified effector versus memory CD8+ T cell signature genes. Taken together, these findings indicate that after in vivo priming following HSV infection, Ptpn2 deficiency resulted in the preferential generation of OT-I cells with a transcriptional profile biased towards more terminally differentiated KLRG1+ effector cells with restricted memory potential.
2021-02-04 | GSE166133 | GEO
Project description:Gene expression changes were computed between naïve, WT and PD-1 -/- T Cells. WT or PD-1 -/- OT-1+ CD8+ donor T cells were sorted from the ear skin of recipient mice at day 14 after VACV-OVA skin scarification. Naïve CD8+ OT-1 T cells were isolated from lymph node and spleen of naive mice by negative selection on MACS beads
2020-12-22 | GSE130207 | GEO
Project description:Purpose: The goals of this study is to uncover the cellular pathways that are essential for T-cell malignant transformation driven by ORP4L and HTLV-1 oncogene Tax. Methods: T-cell mRNA profiles of WT, ORP4L KI, Wild-type, LCK/R26Tax, ORP4Lcko;LCK/R26Tax mice were generated by deep sequencing, using Illumina NovaSeq 6000 sequencer for 318 cycles.Reads that passed the Illumina quality filters were kept for the subsequent analyses. Adapters were trimmed from the reads, and reads shorter than 17 nt were discarded. The reads were mapped to the Mouse mRNA reference database using FANSe3 algorithm on Chi-Cloud NGS Analysis Platform (Chi-Biotech Co. Ltd., Shenzhen, China). Results: We use edgeR to analysis ORP4kI-vs-WT, LCK/R26Tax-vs-Wild-type，ORP4Lcko;LCK/R26Tax-vs-Wild-type，with a |log2 (FoldChange)| > 1 and p value <0.01. Hierarchical clustering of differentially expressed genes uncovered several as yet uncharacterized genes that may contribute to promote T-cell malignant. Conclusions: Our study represents the first detailed analysis of transcriptomes that promote T-cell malignant transformation driven by HTVL-1 oncogene Tax.
2023-11-11 | GSE162074 | GEO
Project description:Dr. Jameson's research focus is on development and regulation of lymphocytes, especially T cells. Recent work has suggested that differential glycosylation effects the sensitivity of the T cell receptors and its coreceptors, suggesting that regulation of glycosylation may be a critical element in controlling T cell development, survival and functional activity. Determination of how glycosylation enzymes/substrates change in gene expression during development of mouse CD8 T cells. Highly purified pre-selection CD4+8+ thymocytes (using transgenic/knockout mice in our colony) are compared to mature CD8 T cells from the lymph node. The goal is to build on data suggesting that this developmental step involves regulated expression of sialyltransferases (and/or neuraminidases). Highly purified pre-selection CD4+8+ thymocytes (using transgenic/knockout mice in our colony) are compared to mature CD8 T cells from the lymph node. Pre-selection CD4+8+ (DP) thymocytes were sorted from TCRa-/- thymi. Post-selection (post-positive selection) DP thymocytes came from an OT-I TCR transgenic mouse. Naïve (CD44lo) CD8 T cells from lymph node of OT-I mice were used as naïve CD8 T cells. For activated cells, naïve OT-I T cells were activated for 48 hours in vitro with cognate antigen (SIINFEKL peptide/Kb) (displayed on cell sized latex beads) in the presence of IL-2 and IL-12.
2010-12-11 | E-GEOD-26012 | biostudies-arrayexpress
Project description:T-cell acute lymphoblastic leukemia (T-ALL) is an aggressive hematological malignancy, and novel therapeutics are much needed. Profiling patient leukemia’ drug sensitivities ex vivo, we discovered that 44.4% of childhood and 16.7% of adult T-ALL cases exquisitely respond to dasatinib. Applying network-based systems pharmacology analyses to examine signal circuitry, we identified preTCR-LCK activation as the driver of dasatinib sensitivity, and T-ALL-specific LCK dependency was confirmed in genome-wide CRISPR-Cas9 screens. Dasatinib-sensitive T-ALLs exhibited high BCL-XL and low BCL2 activity and venetoclax resistance. Discordant sensitivity of T-ALL to dasatinib and venetoclax is strongly correlated with T-cell differentiation, particularly with the dynamic shift in LCK vs. BCL2 activation. Finally, single-cell analysis identified leukemia heterogeneity in LCK and BCL2 signaling and T-cell maturation stage, consistent with dasatinib response. In conclusion, our results indicate that developmental arrest in T-ALL drives differential activation of preTCR-LCK and BCL2 signaling in this leukemia, providing unique opportunities for targeted therapy.
2021-01-05 | GSE158457 | GEO