5-aminolevulinic acid (ALA) is the common precursor of all biological synthezised tetrapyrroles. Inhibition of ALA synthesis results in decreased amounts of chlorophylls, heme, siroheme and phytochrome. It was previously shown that 4 out of 5 Arabidopsis mutants uncoupling nuclear gene expression from the physiological state of the chloroplast are affected in plant tetrapyrrole biosynthesis. It is common to all four mutants to show a reduced ALA formation.
Evidence for a Contribution of ALA Synthesis to Plastid-To-Nucleus Signaling.
Age, Specimen part
View SamplesTriple-negative breast cancer (TNBC) patients with residual disease after neoadjuvant chemotherapy generally have worse outcome; however, some patients with residual tumor after neoadjuvant chemotherapy do not relapse. We hypothesize that there are subgroups of chemoresistant TNBC patients with different prognosis. In this study, 25 chemoresistant samples from 47 neoadjuvant chemotherapy-treated TNBC (The Methodist Hospital) are chosen for study
Identification of prognosis-relevant subgroups in patients with chemoresistant triple-negative breast cancer.
Age, Specimen part, Disease, Disease stage
View SamplesExpression profiling of FACS purified Lin-cKit+ cells from compound URE-/+::Msh2-/- mice with AML and control animals
Minimal PU.1 reduction induces a preleukemic state and promotes development of acute myeloid leukemia.
No sample metadata fields
View SamplesExpression profiling of FACS purified Lin-cKit+ cells from preleukemic compound URE-/+::Msh2-/- mice and control animals (two separate pools of 3 mice each)
Minimal PU.1 reduction induces a preleukemic state and promotes development of acute myeloid leukemia.
No sample metadata fields
View SamplesIn acute myeloid leukemia (AML), the mixed lineage leukemia (MLL) gene may be rearranged to generate a partial tandem duplication (PTD), or fused to partner genes through a chromosomal translocation (tMLL). In this study, we first explored the differentially expressed genes between MLL-PTD and tMLL using gene expression profiling of our cohort (15 MLL-PTD and 10 tMLL) and one published data set. The top 250 probes were chosen from each set, resulting in 29 common probes (21 unique genes) to both sets. The selected genes include four HOXB genes, HOXB2, B3, B5, and B6. The expression values of these HOXB genes significantly differ between MLL-PTD and tMLL cases. Clustering and classification analyses were thoroughly conducted to support our gene selection results. Second, as MLL-PTD, FLT3-ITD, and NPM1 mutations are identified in AML with normal karyotypes, we briefly studied their impact on the HOXB genes. Another contribution of this study is to demonstrate that using public data from other studies enriches samples for analysis and yields more conclusive results.
Expression of HOXB genes is significantly different in acute myeloid leukemia with a partial tandem duplication of MLL vs. a MLL translocation: a cross-laboratory study.
No sample metadata fields
View SamplesFor establishing the photosynthetic apparatus plant cells must orchestrate the expression of genes encoded in both nucleus and chloroplast. Therefore a crosstalk between the two compartments is necessary.
Light and Plastid Signals Regulate Different Sets of Genes in the Albino Mutant Pap7-1.
Age, Specimen part
View SamplesThis is to compare the gene expression profile of Th1 and Th17 cells.
Late developmental plasticity in the T helper 17 lineage.
No sample metadata fields
View SamplesThe development of the human brain is a complex and precisely regulated process that unfolds over a protracted period of time. Human-specific features of this process, especially the ways in which highly complex neural circuits of the cerebral cortex form, are likely to be important factors in the evolution of human specializations. However, in addition to giving us remarkable cognitive and motor abilities, the formation of intricate neural circuits may have also increased our susceptibility to psychiatric and neurodegenerative disorders. Furthermore, substantial evidence suggests that the symptoms and progression of many brain disorders are dramatically influenced by genetic and developmental processes that define regional cell phenotypes and connectivity. Sex differences also play an important role in brain development and function and are a risk factor for several brain disorders, such as autism spectrum disorders (ASD) and depression. Thus understanding the spatiotemporal dynamics and functional organization of the brain transcriptome is essential to teasing out the keys to human neurodevelopment, sexual dimorphism, and evolution as well as our increased susceptibility to certain brain disorders. Most transcriptome studies of the developing brain have been restricted to rodents, and those performed in humans and nonhuman primates have included relatively small sample sizes and predominantly focused on few regions or developmental time points. Because many prominent features of human brain development significantly diverge from those of well-characterized model organisms, the translation of knowledge across species is difficult, and it is likely that many underlying genetic processes have gone undetected. In this study, we have taken a genome-wide approach to analyze the human transcriptome at single-exon resolution with ~1.4 million exon-level probe sets in 16 brain regions from donors representing both sexes and multiple ethnicities, across pre and postnatal development, including adolescence, and adulthood. We also generated genome-wide genotype data for 2.5 million single nucleotide polymorphisms (SNPs) and copy number variants (CNVs) for each specimen. Our analyses of the data revealed several features of the human brain transcriptome: spatiotemporal expression dynamics of individual and functionally related groups of genes, differential exon usage, sex-specific expression patterns and exon usage, and organization of the transcriptome into functional modules. We also profiled developmental trajectories of genes important for neurobiological themes and genes associated with ASD and schizophrenia. Finally, we present associations between specific SNPs and gene expression levels in different brain regions across development. The dataset presented here provides research opportunities and a wealth of information not previously available to the scientific community.
Spatio-temporal transcriptome of the human brain.
Sex, Age
View SamplesWe explored mechanisms of carcinogenicity of acrylamide in the rat thyroid. We compared the transcriptome profiles of target(thyroid) vs non-target(liver) tissues.
Transcriptional profiling of male F344 rats suggests the involvement of calcium signaling in the mode of action of acrylamide-induced thyroid cancer.
No sample metadata fields
View SamplesGene expression profiling of supraclavicular brown, interscapular brown, inguinal white, and epididymal white adipose tissues from C57BL/6 male mice was performed by RNA-sequencing. Overall design: Total of 12 RNA samples (3 RNA samples from each adipose tissue type) from adipose tissues were used for RNA-sequencing analysis.
Identification and characterization of a supraclavicular brown adipose tissue in mice.
Sex, Specimen part, Cell line, Subject
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