Previous reports have defined three subsets of mouse NK cells on the basis of the expression of CD27 and CD11b. The developmental relationship between these subsets was unclear. To address this issue, we evaluated the overall proximity between mouse NK cell subsets defined by CD27 and CD11b expression using pangenomic gene expression profiling. The results suggest that CD27+CD11b-, CD27+CD11b+ and CD27-CD11b+ correspond to three different intermediates stages of NK cell development.
Maturation of mouse NK cells is a 4-stage developmental program.
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View SamplesEffects of IL-4 on CD8 T cells functions are largely unknown. IL-4 induces survival and proliferation of CD8 T cells, but several studies suggest that IL-4 could also affect several functions of CD8 T cells such as cytotoxicity. Our team has shown that IL-4 repress the expression of Ccl5 in vitro.
Negative regulation of NKG2D expression by IL-4 in memory CD8 T cells.
Specimen part, Treatment
View SamplesGroup 3 innate lymphoid cells (ILC3) are composed of NCR- and NCR+ subsets located at mucosal sites exposed to billions of commensal microbes and potentially harmful pathogens. Together with T cells, the various ILC3 subsets maintain the balance between homeostasis and immune activation. Using genetic mapping, we reveal here the existence of a new subset of NCR- ILC3 transiently expressing Ncr1 but strongly related to unlabeled NCR- ILC3, demonstrating previously unsuspected heterogeneity within the NCR- ILC3 population. Notch signaling is required for the differentiation of NCR- ILC3 into NCR+ ILC3. However, we show here that Notch signaling must be sustained for the maintenance of the NCR+ phenotype and that TGF-ß impairs the development of NCR+ ILC3. Thus, ILC3 diversity and the plasticity of the NCR- and NCR+ subsets is regulated by the balance between the opposing effects of Notch and TGF-ß signaling, maintaining homeostasis in the face of continual challenges. Overall design: Transcriptional profiling of three ILC subsets (NCR-FM-, NCR-FM- and NCR+FM+) using RNA sequencing
Transforming growth factor-β and Notch ligands act as opposing environmental cues in regulating the plasticity of type 3 innate lymphoid cells.
Specimen part, Cell line, Subject
View SamplesDendritic cells (DCs) are a complex group of cells which play a critical role in vertebrate immunity. Spleen or lymph node resident DCs are subdivided into conventional DC (cDC) subsets (CD11b and CD8alpha in mouse; BDCA1 and BDCA3 in man) and plasmacytoid DCs (pDCs). It is currently unclear if these various DC populations belong to a unique hematopoietic lineage and if the subsets identified in the mouse and human systems are evolutionary homologs. To bring novel insights into these questions, we sought conserved genetic signatures for these DCs through the analysis of a compendium of genome-wide expression profiles of mouse or human leukocytes.
Novel insights into the relationships between dendritic cell subsets in human and mouse revealed by genome-wide expression profiling.
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View SamplesmiRNA regulate gene expression at the post-transcriptionnal level. To gain further insight into this process, we analysed by Affymetrix microarray, the transcriptome of Dicer WT or Dicer deleted mouse CD4 T cells.
microRNA-mediated regulation of mTOR complex components facilitates discrimination between activation and anergy in CD4 T cells.
Specimen part
View SamplesTranscriptome analysis comparing naive, protective and non-protective spleen memory CD8 T lymphocytes were conducted to identify key functions associated with memory CD8-mediated immune protection. Memory CD8 T cells generated in response to influenza or vaccinia infection (Flu-memory and VV-memory) were compared to inflammatory memory cells (TIM) that were generated by peptide in inflammatory context. Gene expression analysis was performed on quiescent and re-stimulated CD8 T cells.
Immune signatures of protective spleen memory CD8 T cells.
Specimen part
View SamplesEpithelial cell adhesion molecule EpCAM is a transmembrane glycoprotein that is dynamically expressed in human and murine renal epithelia during development. The levels of EpCAM in the renal epithelium are upregulated both during regeneration after ischemia/reperfusion injury and in renal-derived carcinomas. The role of EpCAM in early kidney development, however, has remained unclear. To identify potential programs and signaling pathways that are controlled by EpCAM during pronephros development, we developed a method to study the transcriptomes of specific pronephric segments. Combining laser capture microdissection (LCM) with RNA sequencing (RNA-seq), we generated genome-wide transcriptional profiles of the distal late tubules of wild type and EpCAM-deficient embryos. Overall design: RNA-seq of LCM-dissected pronephric cells from EpCAM-deficient and control zebrafish embryos
EpCAM controls morphogenetic programs during zebrafish pronephros development.
No sample metadata fields
View SamplesOdorants are thought to activate sets of odorant receptors in vivo, but capturing sets of responsive receptors in vivo has never been accomplished.
In vivo identification of eugenol-responsive and muscone-responsive mouse odorant receptors.
Specimen part
View SamplesTo identify biological processes as well as molecular markers for drip loss, the transcriptomes of logissimus dorsi from 6 sib pair of F2 animals
Expression profiling of muscle reveals transcripts differentially expressed in muscle that affect water-holding capacity of pork.
No sample metadata fields
View SamplesTo identify gene(s) that are modified in their relative expression levels in the Potocki-Lupski Syndrome mouse model and map to the rearranged region, i.e. possible candidate genes at the source of the PTLS-like phenotypes shown by the PTLS mouse, we comp
Abnormal social behaviors and altered gene expression rates in a mouse model for Potocki-Lupski syndrome.
No sample metadata fields
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