In order to identify putative downstream target genes of RBE, we sequenced mRNA from dexamethasone (DEX) and mock treated transgenic Arabidopsis line 35S:GR-RBE (RBE coding region fused to a glucocorticoid receptor domain driven by the constitutive 35S promoter) floral tissues. We compared the results from DEX and mock treatments and focused on the 832 genes whose expression was significantly reduced (P < 0.025) by 2-fold or more in DEX as compared to mock-treated plants. In this analysis, we identified MIR164c (EEP1) as a candidate target of RBE, which was further confirmed by other molecular and genetic analyses. Regulation of MIR164c by RBE is important for normal floral organ formation in Arabidopsis. Overall design: We used two biological replicates, each with two technical replicates for four hour DEX or mock treated floral tissues to produce 8 sequencing libraries.
RBE controls microRNA164 expression to effect floral organogenesis.
Specimen part, Cell line, Subject
View SamplesFunctional deficits persist after spinal cord injury (SCI) because axons in the adult mammalian central nervous system (CNS) fail to regenerate. However, modest levels of spontaneous functional recovery are typically observed after trauma, and are thought to be mediated by the plasticity of intact circuits. The mechanisms underlying intact circuit plasticity are not delineated. Here, we characterize the in vivo transcriptome of sprouting intact neurons from ngr1 null mice after partial SCI. We identify the lysophosphatidic acid signaling modulators Lppr1 and Lpar1 as intrinsic axon growth modulators for intact corticospinal motor neurons after adjacent injury. Furthermore, in vivo Lpar1 inhibition or Lppr1 overexpression enhances sprouting of intact corticospinal tract axons and yields greater functional recovery after unilateral brainstem lesion in wild type mice. Thus, the transcriptional profile of injury-induced sprouting of intact neurons reveals targets for therapeutic enhancement of axon growth initiation and new synapse formation. Overall design: GFP labeled Corticospinal motor neurons (CSMNs) were harvetsed via laser capture microdissection to assess gene expression between populations that were quiescent and those that initated a functional axon growth response.
Identification of Intrinsic Axon Growth Modulators for Intact CNS Neurons after Injury.
Specimen part, Cell line, Subject
View SamplesIn response to acute loss of the Ulp2 SUMO-specific protease, yeast become disomic for chromosome I (ChrI) and ChrXII. Here we report that ChrI disomy, which creates an adaptive advantage in part by increasing the dosage of the Ccr4 deadenylase, was eliminated by extended passaging. Loss of aneuploidy is often accompanied by mutations in essential SUMO-ligating enzymes, which reduced polySUMO-conjugate accumulation. The mRNA levels for almost all ribosomal proteins increases transiently upon initial loss of Ulp2, but elevated Ccr4 levels limit excess ribosome formation. Notably, extended passaging leads to increased levels of many small nucleolar RNAs (snoRNAs) involved in ribosome biogenesis, and higher dosage of three linked ChrXII snoRNA genes suppressed ChrXII disomy in ulp2? cells. Our data reveal that aneuploidy allows rapid adaptation to Ulp2 loss, but long-term adaptation restores euploidy. Cellular evolution restores homeostasis through countervailing mutations in SUMO-modification pathways and regulatory shifts in ribosome biogenesis. Overall design: In these comparisons, the ulp2? cells either carried a WT ULP2 plasmid or empty vector and were passaged for 50 or 500 generations. mRNA profiles of them were generated by sequencing, in triplicate, using Illumina HiSeq 2500 .
Distinct adaptive mechanisms drive recovery from aneuploidy caused by loss of the Ulp2 SUMO protease.
Subject
View SamplesAPs were isolated from naïve skin and day 5wounds from dorsal skin wound beds of 7-9 weeks old using FACS. This experiment describes changes in AP gene expression associated with injury and subsequent tissue repair. Overall design: APs were isolated by FACS.
Myofibroblast proliferation and heterogeneity are supported by macrophages during skin repair.
Sex, Age, Cell line, Subject
View SamplesCells were isolated from day 5wounds from dorsal skin wound beds of 7-9 weeks old using FACS. This experiment describes the gene expression profile associated with different immune cell subsets during tissue repair. Overall design: Cells were isolated by FACS.
Myofibroblast proliferation and heterogeneity are supported by macrophages during skin repair.
Sex, Age, Cell line, Subject
View SamplesCombination of GSI with fludarabine has a synergistic antileukemic effect in primary NOTCH1-mutated CLL cells
The γ-secretase inhibitor PF-03084014 combined with fludarabine antagonizes migration, invasion and angiogenesis in NOTCH1-mutated CLL cells.
Specimen part
View SamplesComparison of emphysema vs non emphysema COPD lung tissue expression
Network Analysis of Lung Transcriptomics Reveals a Distinct B-Cell Signature in Emphysema.
Specimen part
View SamplesPrecursor T-cell lymphoblastic neoplasms are aggressive haematological neoplasm that most often manifest with extensive marrow and blood affectation (T-cell acute lymphoblastic leukaemia or T-ALL) or less commonly as a thymic mass with limited bone marrow infiltration (T-cell lymphoblastic lymphoma or T-LBL). Here we show data from RNA-Seq in a sample series of T-LBL from Spanish patients.The goal was to determine the levels of expression of coding genes and microRNAs, and to identify all genetic variants including SNVs, indels, and fusion transcripts. Overall design: Expression data were determined by comparson of each tumour sample with two control thymuses (404 and 405). Genetic variants were determined by comparison of tumour sequences with canonical ENSEMBL normal-references of each gene.
RNA-Seq reveals the existence of a CDKN1C-E2F1-TP53 axis that is altered in human T-cell lymphoblastic lymphomas.
Specimen part, Subject
View SamplesTrastuzumab improves survival outcomes in patients with HER2+ metastatic breast cancer. Some of these patients may become long-term survivors. The Long-Her study was designed to identify clinical and molecular markers that could differentiate long-term survivors from patients having early progression to trastuzumab.
The Long-HER study: clinical and molecular analysis of patients with HER2+ advanced breast cancer who become long-term survivors with trastuzumab-based therapy.
Age, Disease
View SamplesHutchinson-Gilford Progeria Syndrome (HGPS) is caused by a point mutation in the LMNA gene that activates a cryptic donor splice site and yields a truncated form of prelamin A called progerin. Small amounts of progerin are also produced during normal aging. Studies with mouse models of HGPS have allowed the recent development of the first therapeutic approaches for this disease. However, none of these earlier works have addressed the aberrant and pathogenic LMNA splicing observed in HGPS patients because of the lack of an appropriate mouse model. We report herein a genetically modified mouse strain that carries the HGPS mutation. These mice accumulate progerin, present histological and transcriptional alterations characteristic of progeroid models, and phenocopy the main clinical manifestations of human HGPS, including shortened life span and bone and cardiovascular aberrations. By using this animal model, we have developed an antisense morpholinobased therapy that prevents the pathogenic Lmna splicing, dramatically reducing the accumulation of progerin and its associated nuclear defects. Treatment of mutant mice with these morpholinos led to a marked amelioration of their progeroid phenotype and substantially extended their life span, supporting the effectiveness of antisense oligonucleotidebased therapies for treating human diseases of accelerated aging.
Splicing-directed therapy in a new mouse model of human accelerated aging.
Sex, Age, Specimen part
View Samples