This study analyzes transcriptome profiles in pre-germinated seeds and hypoxia-treated seedlings of Arabidopsis thaliana wild type (Col-0) and homozygous mutants (prt6-1 and ate1 ate2). This dataset includes CEL files, RMA signal values and MAS5 P/M/A calls. For pre-germinated seeds, seeds imbibed for 24 h were used for total RNA extraction. For hypoxia treatment, 7-d-old seedlings were incubated in a hypoxia chamber for 2 h and the entire seedling was subjected to RNA extraction. Quantitative profiling of cellular mRNAs was accomplished with the Affymetrix ATH1 platform. Changes in the transcriptome during early seed germination stage and in response to hypoxia in seedlings were evaluated. The data led to identification of mRNAs with abundance regulated by PRT6 and ATE1 / ATE2, which are essential components for the N-end rule pathway of targeted proteolysis (NERP). A combination of genetic, biochemical and molecular analyses reveal that NERP coordinates the stability of key ethylene responsive factor (ERF) family transcription factors, which regulate expression of core hypoxia response genes and tolerance to low oxygen stress. This indicates that the NERP functions as a homeostatic sensor of low oxygen in plants.
Homeostatic response to hypoxia is regulated by the N-end rule pathway in plants.
Age, Specimen part, Treatment
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Epigenetic regulator Smchd1 functions as a tumor suppressor.
Specimen part
View SamplesSmchd1 appears to act as a tumour suppressor in the transformed fibroblast model. We find gene expression differences are most pronounced in the transformed MEFs. We always detect a small number of clustered genes and imprinted genes as differentially expressed, along with others involved in tumorigenesis.
Epigenetic regulator Smchd1 functions as a tumor suppressor.
Specimen part
View SamplesSmchd1 appears to act as a tumour suppressor in the E-Myc B cell lymphoma model. We find gene expression differences are most pronounced in the premalignant cells, and observe more variability in end stage lymphomas. We always detect a small number of clustered genes and imprinted genes as differentially expressed, along with others involved in tumorigenesis.
Epigenetic regulator Smchd1 functions as a tumor suppressor.
Specimen part
View SamplesSmchd1 appears to act as a tumour suppressor in the E-Myc B cell lymphoma model. We find gene expression differences are most pronounced in premalignant cells. We always detect a small number of clustered genes and imprinted genes as differentially expressed, along with others involved in tumorigenesis.
Epigenetic regulator Smchd1 functions as a tumor suppressor.
Specimen part
View SamplesSmchd1 appears to act as a tumour suppressor in the E-Myc mouse B cell lymphoma model. We find a small number of gene expression differences at E17.5 in the pre-B cells, before phenotypic differences are observed.
Epigenetic regulator Smchd1 functions as a tumor suppressor.
Specimen part
View SamplesHuman T-lymphotropic virus type 1 (HTLV-1) is associated with the development of Adult T-cell Leukemia, an aggressive CD4+ T-cells malignancy. Here, we have developed a new procedure to infect humanized mice with proviruses displaying specific mutations, such as one leading to the loss of the PDZ domain-binding motif (PBM) of Tax. In order to specifically analyze the in vivo role of the PBM of Tax, a comparative study of infected hu-mice was performed. We used next-generation sequencing to perform genome-wide transcriptomic analysis of T-cells infected with wild-type HTLV-1 virus or with virus bearing a mutated form of Tax lacking the PBM. Our results suggest that Tax PBM might be involved in the regulation of genes implicated in proliferation, apoptosis and cytoskeleton organization. Overall design: mRNA profiles of T-cells obtained from hu-Mice infected with wild-type or Tax-PBM HTLV-1 were generated by deep-sequencing in triplicates using Illumina's Hiseq3000 platform.
PDZ domain-binding motif of Tax sustains T-cell proliferation in HTLV-1-infected humanized mice.
Specimen part, Subject
View SamplesA ""Cartes d'Identite des Tumeurs"" (CIT) project from the french Ligue Nationale Contre le Cancer (<a href="http://cit.ligue-cancer.net" target="_blank">http://cit.ligue-cancer.net</a>). 73 samples (60 tumoral, 6 normal kidneys (NK), 3 fetal kidneys (FK) and 4 cell lines (L)), hybridized on Affymetrix HG-U133A GeneChips.Tumor classification based on a characterization of WT1 and Betacatenin. Identification of major differences between two categories of Wilms' Tumors defined according to WT1 and CTNNB1 genomic and expression features. First large scale study based on post-chemotherapy resected tumors, according to the SIOP protocoles.
WNT/beta-catenin pathway activation in Wilms tumors: a unifying mechanism with multiple entries?
Sex, Age, Specimen part, Disease, Disease stage, Subject
View SamplesThe polyadenosine RNA binding proteins (Pabs) represent one class of RNA binding proteins that play critical roles in gene expression. This class includes the well-studied nuclear and cytoplasmic Pabs, PABPN1 and PABPC1, respectively, as well as the newly characterized nuclear Pab, zinc finger CCCH-type containing #14, or ZC3H14. ZC3H14 was recently linked to a form of intellectual disability, suggesting a critical role for ZC3H14 in neurons; however, the post-transcriptional function of ZC3H14 is unknown. In this study, we performed a microarray analysis of cells depleted of ZC3H14 or PABPN1 in MCF-7 breast cancer cells. These results revealed that PABPN1 significantly affected ~17% of expressed transcripts as compared to ZC3H14, which affected ~1% of expressed transcripts, suggesting that ZC3H14 has specific mRNA targets. The differentially expressed mRNAs identified in this analysis not only provide information about the classes and types of transcripts that are regulated by these proteins, but also represent a set of transcripts that could be directly bound by ZC3H14 and/or PABPN1.
The Polyadenosine RNA-binding Protein, Zinc Finger Cys3His Protein 14 (ZC3H14), Regulates the Pre-mRNA Processing of a Key ATP Synthase Subunit mRNA.
Cell line
View SamplesMicroarray experiments were performed using FAC-sorted young photoreceptors to analyze their transcriptome in comparison to remaining retinal cells at same developmental stage and retinal progenitors.
Increased integration of transplanted CD73-positive photoreceptor precursors into adult mouse retina.
Specimen part
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