Basilar papillae (i.e.auditory epithelia) were isolated from 4-day-old chickens and sectioned into low, middle, and high frequency segments. RNA was isolated from each segment separately, amplified using a two-cycle approach, biotinylated, and hybridized to Affymetrix chicken whole-genome arrays.
Gene expression gradients along the tonotopic axis of the chicken auditory epithelium.
Specimen part
View SamplesWe analyzed the changes in the spinal cord transcriptome after a spinal cord contusion injury and MSC or OEC transplantation. The cells were injected immediately or 7 days after the injury. The mRNA of the spinal cord injured segment was extracted and analyzed by microarray at 2 and 7 days after cell grafting.
Gene expression changes in the injured spinal cord following transplantation of mesenchymal stem cells or olfactory ensheathing cells.
Treatment
View SamplesWhile human embryonic stem cells (hESCs) are predisposed towards chromosomal aneploidities on 12, 17, 20 and X, rendering them susceptible to transformation, the specific genes expressed are not yet known. Here, by identifying the genes over expressed in pluripotent rhesus ESCs (nhpESCs) and comparing them to both their genetically-identical differentiated progeny (teratoma fibroblasts) as well as genetically-related differentiated parental cells (parental skin fibroblasts from whom gametes were used for ESC derivation), we find that some of those over expressed genes in nhpESCs cluster preferentially on rhesus chromosomes 16, 19, 20 and X, homologues of human chromosomes 17, 19, 16 and X respectively. Differentiated parental skin fibroblasts display gene expression profiles closer to nhpESC profiles than to teratoma cells, which are genetically identical to the pluripotent nhpESCs. Twenty over and under expressed pluripotency modulators, some implicated in neurogenesis, have been identified. The over expression of some of these genes discovered using pedigreed nhpESCs derived from prime embryos generated by fertile primates, which is impossible to perform with the anonymously donated clinically-discarded embryos from which hESCs are derived, independently confirms the importance of chromosome 17 and X regions in pluripotency and suggests specific candidates for targeting differentiation and transformation decisions.
Pluripotency genes overexpressed in primate embryonic stem cells are localized on homologues of human chromosomes 16, 17, 19, and X.
Specimen part
View SamplesThe present study reports an unbiased analysis of the cytotoxic T cell serine-threonine phosphoproteome using high resolution mass spectrometry. Approximately 2,000 phosphorylations were identified in CTLs of which approximately 450 were controlled by TCR signaling. A significantly overrepresented group of molecules identified in the phosphoproteomic screen were transcription activators, co-repressors and chromatin regulators. A focus on the chromatin regulators revealed that CTLs have high expression of the histone deacetylase HDAC7 but continually phosphorylate and export this transcriptional repressor from the nucleus. HDAC7 dephosphorylation results in its nuclear accumulation and suppressed expression of genes encoding key cytokines, cytokine receptors and adhesion molecules that determine CTL function. The screening of the CTL phosphoproteome thus reveals intrinsic pathways of serine-threonine phosphorylation that target chromatin regulators in CTLs and determine the CTL functional program. We used Affymetrix microarray analysis to explore the molecular basis for the role of HDAC7 in CTLs and the impact of GFP-HDAC7 phosphorylation deficient mutant expression on the CTL transcriptional profile.
Phosphoproteomic analysis reveals an intrinsic pathway for the regulation of histone deacetylase 7 that controls the function of cytotoxic T lymphocytes.
Specimen part
View SamplesPedigreed primate ESCs display homogeneous and reliable expression profiles.
Pedigreed primate embryonic stem cells express homogeneous familial gene profiles.
No sample metadata fields
View SamplesComparison of transcriptional profile of TCR stimulated P14-TCR wild-type and P14-PKD2 null murine lymph node cells
Protein kinase D2 has a restricted but critical role in T-cell antigen receptor signalling in mature T-cells.
Specimen part
View SamplesA. thaliana plants were grown in 1/2 MS medium in the presence of carbenicillin (10 µg·mL-1) for 1 or 7 days and RNA from their roots extracted and sequenced in Illumina HiSeq 2000/5000 (2x50 bp). Overall design: Total RNA obtained from A. thaliana roots grown in the absence (mock) or presence of carbenicillin (10 µg·mL-1) for 1 or 7 days. Three replicas per experiment.
β-Lactam Antibiotics Modify Root Architecture and Indole Glucosinolate Metabolism in Arabidopsis thaliana.
Specimen part, Subject
View SamplesAnalysis of Drosophila melanogaster early embryos (pre-zygotic genome activation) following the germ line-specific depletion of the dMLL3/4 histone methyltransferase (also known as Trr). These results provide insight into the molecular mechanisms responsible for the assembly of the zygotic genome at fertilization.
The Trithorax group protein dMLL3/4 instructs the assembly of the zygotic genome at fertilization.
Specimen part
View SamplesBACKGROUND: Common variants in the TCF4 gene are among the most robustly supported genetic risk factors for schizophrenia. Rare TCF4 deletions and loss-of-function point mutations cause Pitt-Hopkins syndrome, a developmental disorder associated with severe intellectual disability.
Knockdown of the schizophrenia susceptibility gene <i>TCF4</i> alters gene expression and proliferation of progenitor cells from the developing human neocortex.
Sex, Specimen part, Cell line
View SamplesmiR-34a is strongly induced upon TPA-induced megakaryocyte differentiation of K562 cells. To investigate the gene networks regulated by this miRNA during the process of differentiation we performed gene microarray analysis in K562 cells overexpressing miR-34a or a control sequence.
miR-34a contributes to megakaryocytic differentiation of K562 cells independently of p53.
Cell line
View Samples