We previously found that mice with heterozygous knockout of the alpha-isoform of calcium/calmodulin-dependent protein kinase II (alpha-CaMKII HKO mice) show various dysregulated behaviors, including cyclic variations in locomotor activity (LA), suggesting that alpha-CaMKII HKO mice may serve as an animal model showing infradian oscillation of mood. We performed gene expression microarray analysis of dentate gyrus from alpha-CaMKII HKO mice. Mice were selected for the sampling such that their LA levels varied among the mice.
Circadian Gene Circuitry Predicts Hyperactive Behavior in a Mood Disorder Mouse Model.
Specimen part
View SamplesPurpose: The goals of this study are to elucidate the influence of integrin ß3 signaling on STAT1-dependnet gene expression in IFN?-treated HSCs. Methods: Wild type (WT) HSCs were cultured with or without IFN? and/or VN in the presence of stem cell factor (SCF) plus thrombopoietin (TPO). Subsequently, cultured HSC fraction (CD48- c-kit+ Sca-1+ Lineage-) were sorted, followed by mRNA sequence using Ion Proton (n>4). Moreover, to extract genes whose expression were changed via STAT1 in the presence of IFN?, mRNA profiles of STAT1-/- HSCs treated with or without IFN? were also generated by the same way. The sequence reads that passed quality filters were analyzed by CLC genomic workbench. Results: Using an optimized data analysis workflow, we mapped about 30 million sequence reads per sample to the mouse genome (build mm10) with CLC genomic workbench. Indeed, hierarchical clustering analysis showed that IFN?-treated STAT1-/- HSCs was categorized to the group including Wt HSCs cultured in the absence of IFN? rather than HSCs treated with IFN?. Furthermore, gene set enrichment analysis (GSEA) showed that STAT1-dependent upregulated gene sets were significantly enriched within genes whose expression was enhanced in HSCs treated with VN and IFN?. In contrast, integrin ß3 signaling in the absence of IFN? appears to not influence the expression of IFN?/STAT1-dependent genes, as evidenced by the observation that VN treatment was statistically and significantly independent of the enrichment of gene sets that were both up-regulated by STAT1 Conclusions: Our study represents that STAT1 plays a central role in IFN?-mediated HSC responses and integrin ß3 signaling in HSCs promotes STAT1-dependent gene expression in the presence of IFN?. Overall design: After HSCs derived from wild type (WT) and STAT1-/- mice were treated with IFNg and/or vitronectin for 5 days, mRNA profiles were generated by deep sequencing using Ion Proton system (n>4).
Integrin αvβ3 enhances the suppressive effect of interferon-γ on hematopoietic stem cells.
Specimen part, Cell line, Subject
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Deficiency of schnurri-2, an MHC enhancer binding protein, induces mild chronic inflammation in the brain and confers molecular, neuronal, and behavioral phenotypes related to schizophrenia.
Specimen part
View SamplesSchnurri-2 (Shn-2), an NF-kappa B site-binding protein, tightly binds to the enhancers of major histocompatibility complex (MHC) class I genes and inflammatory cytokines, which have been shown to harbor common variant single nucleotide polymorphisms associated with schizophrenia. Shn-2 knockout mice show behavioral abnormalities that strongly resemble those of schizophrenics. We performed gene expression microarray analysis of dentate gyri from Shn-2 knockout and wild-type control mice.
Deficiency of schnurri-2, an MHC enhancer binding protein, induces mild chronic inflammation in the brain and confers molecular, neuronal, and behavioral phenotypes related to schizophrenia.
Specimen part
View SamplesSchnurri-2 (Shn-2), an NF-kappa B site-binding protein, tightly binds to the enhancers of major histocompatibility complex (MHC) class I genes and inflammatory cytokines, which have been shown to harbor common variant single nucleotide polymorphisms associated with schizophrenia. Shn-2 knockout mice show behavioral abnormalities that strongly resemble those of schizophrenics. We performed gene expression microarray analysis of prefrontal cortices from Shn-2 knockout and wild-type control mice.
Deficiency of schnurri-2, an MHC enhancer binding protein, induces mild chronic inflammation in the brain and confers molecular, neuronal, and behavioral phenotypes related to schizophrenia.
Specimen part
View SamplesSchnurri-2 (Shn-2), an NF-kappa B site-binding protein, tightly binds to the enhancers of major histocompatibility complex (MHC) class I genes and inflammatory cytokines, which have been shown to harbor common variant single nucleotide polymorphisms associated with schizophrenia. Shn-2 knockout mice show behavioral abnormalities that strongly resemble those of schizophrenics. We performed gene expression microarray analysis of hippocampi from Shn-2 knockout and wild-type control mice.
Deficiency of schnurri-2, an MHC enhancer binding protein, induces mild chronic inflammation in the brain and confers molecular, neuronal, and behavioral phenotypes related to schizophrenia.
Sex, Specimen part
View SamplesPHF8 exerts distinct functions in different types of cancer. However, the mechanisms underlying its specific functions in each case remain obscure. To establish whether overexpression of PHF8 regulates the TGF-ß induced the epithelial-mesenchymal transition (EMT), we treated MCF10A-Mock (control) and MCF10A-PHF8wt (overexpressing wild-type PHF8) cells with TGF-ß1 for 0, 24, 48 and 72 hours and performed RNA-seq in biological duplicates. Our data indicated that EMT gene signatures were significantly enriched in MCF10A-PHF8 cells with TGF-ß1 treatment at all time points, strongly indicating that PHF8 overexpression induces a sustained EMT signaling program. Overall design: mRNA profiles of MCF10A-Mock (control) and MCF10A-PHF8 with TGF-ß1 treatment for 0, 24, 48 and 72 hours were generated by RNA-seq, in duplicate, using HiSeq2500 instrument.
Histone demethylase PHF8 promotes epithelial to mesenchymal transition and breast tumorigenesis.
No sample metadata fields
View SamplesPurpose: We have succeeded in the generation and long-term expansion of SOX9-expressing CD271+PDGFRa+CD73+ chondrogenic ectomesenchymal cells from the PAX3/SOX10/FOXD3-expressing MIXL1-CD271hiPDGFRaloCD73- neural crest-like progeny of human pluripotent stem cells in a chemically defined medium supplemented with Nodal/Activin/TGFb inhibitor (SB) and FGF2 (hereafter called FSB). When “primed” with TGFb, such cells efficiently formed translucent cartilage particles, which were completely mineralized in 12 weeks in immunocompromized mice. Under the FSB condition, ectomesenchymal cells were expandable without loss of chondrogenic potential for at least 16 passages, maintained normal karyotype for at least 10 passages, which any conditions deviated from it (e.g. FGF2 alone or SB alone) failed to support. In order to address the molecular basis of such effects of FSB, a series of RNA-seq experiments were carried out. Methods: We generated and compared the transcriptome profiles of human ectomesenchymal cells expanded under FSB with those cultured under FSB first then under FGF2 alone (F). As a control, we also generated transcriptome of ectomesenchymal cells expanded from the begining under F conditions. RNA-sequencing libraries were prepared using a SureSelect Strand Specific RNA Library Preparation kit (Agilent technologies, Santa Clara, CA). Sequencing was performed on an Illumina HiSeq 1500 using a TruSeq Rapid SBS kit (Illumina, San Diego, CA) in a 50-base single-end mode. Sequenced reads were mapped against the human reference genome (GRCh37), using TopHat v2.0.12 (http://ccb.jhu.edu/software/tophat/index.shtml). Expression levels were calculated as fragments per kilobase of exon per million mapped fragments (FPKMs) using Cufflinks v2.1.1 (http://cole-trapnell-lab.github.io/cufflinks). Results: Ectomesenchymal cells maintained under FSB conditions preferentially expressed genes representing embryonic progenitors (SOX4/12, LIN28A/B, MYCN), cranial mesenchymes (ALX1/3/4) and chondroprogenitors (SOX9, COL2a1) of the neural crest origin (SOX8/9, NGFR, NES). In contrast, those cultured under FSB then F, still expressed SOX4/11/12, but lost LIN28, MYCN, ALX1/3/4, NGFR, COL2a1 expression. Interestingl it enhances expresion ofTGFß-inducible genes such as THBS1/2 and DCN and osteogenesis-related genes such as COL1a1/2 and RUNX1/2. Conclusions: The CD271+CD73+ ectomesenchymal cells accumulated under FSB conditions possess an mRNA profile of proliferating primitive neural crest/ectomesenchymal cells, although they lacked SOX10 expression, which is critical for neural and melanocytic lineage commitment. Transition from FSB to F conditions supressed the proliferation-related genes expression and enhanced the ossification/mineralization, vasculogenesis/angiogenesis, and cardiac myogenesis-related gene expression. Thus, suppression of TGFß signaling by SB does not seem to freeze the developmental stage of the hPSC-derived neural crest during expansion. Such suppression may instead simply support the high proliferative potential of the cells as well as the expression of SOX9 (and COL2a1), and thereby maintain chondrogenic activity. SOX9 expression initiated at the specification and pre-migratory stages is transient in trunk neural crest but persists in cranial neural crest. The chondrogenic CD271+CD73+ ectomesenchymal cells that maintain SOX9 transcription and translation may therefore represent proliferating cranial neural crest, with a slight commitment to non-neural lineages. Overall design: Examination of human ES-derived neural crest-like progenies expanded in 3 different culture media. Each group contains three biological replicates.
Long-term expandable SOX9+ chondrogenic ectomesenchymal cells from human pluripotent stem cells.
No sample metadata fields
View SamplesThe circadian clock in mammalian cells is cell-autonomously generated during the cellular differentiation process, but the underlying mechanisms are not understood. Here we show that perturbation of transcriptional program by constitutive expression of c-Myc and Dnmt1 ablation disrupts the differentiation-coupled emergence of the clock from mouse embryonic stem cells (ESCs). Using these model ESCs, 484 genes are identified by global gene expression analysis as correlating factors with differentiation-coupled circadian clock development. Among them, we find the misregulation of Kpna2 (Importin-alpha2) during the differentiation of the c-Myc over-expressed and Dnmt1-/- ESCs, in which sustaining cytoplasmic accumulation of PER proteins is observed. Moreover, constitutive expression of Kpna2 during the differentiation culture of ESCs significantly impairs clock development and KPNA2 facilitates cytoplasmic localization of PER1/2. These results suggest that the programmed gene expression network regulates the differentiation-coupled circadian clock development in mammalian cells, at least in part via post-transcriptional regulation of clock proteins. Overall design: Examination of whole transcriptome in ES cells and in vitro differentiated cells.
Transcriptional program of Kpna2/Importin-α2 regulates cellular differentiation-coupled circadian clock development in mammalian cells.
No sample metadata fields
View SamplesTotal RNA from trichomes of fifth and sixth rosette leaves of three-week-old wild-type and gtl1-1 mutants (Figure 3B) were extracted. We found a total number of 1,759 genes, corresponding to 1,694 probes on the ATH1 chip, that show differential expression of at least 1.3-fold. Out of these 1,694 genes, 47.2% are positively regulated and 52.8% are negatively regulated by GTL1.
Transcriptional repression of the APC/C activator CCS52A1 promotes active termination of cell growth.
Specimen part
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