In the semi-dominant mouse model, Nan (neonatal anemia), heterozygotes suffer hemolytic anemia at birth and throughout life due to a missense mutation (E339D) in transcription factor KLF1 (Krüppel-like factor 1; formerly EKLF, erythroid Krüppel-like factor) Here, we focus on erythropoiesis in the adult spleen. We performed RNAseq in flow-sorted spleen erythroid precursors from adult Nan and WT littermates rendered anemic by phlebotomy as a means to identify global transcriptome changes specific to the Nan KLF1 defect, as opposed to those characterizing anemia generally. We show that (1) expression variation in adult Nan spleen is driven primarily by cell maturation, (2) genotype influences on gene expression are most prominent in late stages of erythroid differentiation when Klf1 expression is highest, (3) Nan-KLF1 produces tissue-specific differential gene expression, and (4) suboptimal stress and basal erythropoiesis with increased reactive oxygen species (ROS) contribute to anemia in adult Nan mice.
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Sex, Specimen part, Cell line
View SamplesThis project aims to discover canonical gene fusion events from mixed human tissue cell lines.
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View Samples46BR.1G1 cell line is impaired in DNA ligase 1 (LIG1) activity resulting in an increased level of endogenous single (SSBs) and double stranded DNA breaks (DSBs). 46BR.1G1 fibroblastoid cells represent a suitable model system to investigate how cells cope with low levels of chronic DNA damage, a condition frequently encountered in tumors. Transcriptional alterations in 46BR.1G1 cells were determined by RNAseq by comparison with 7A3, a cell line in which the defect was rescued by stable expression of ectopic wild-type Lig1. The identification of genes differentially expressed in 46BR.1G1 cells would contribute to the elucidation of DNA damage response (DDR) mechanisms.
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View SamplesThis project aims to delineate the circular RNA complement of mouse brain at age 8-9 weeks
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Sex, Age, Specimen part, Cell line
View SamplesMicroRNA down-regulation and noise regulation
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View SamplesK562 single cell RNA-seq study
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View SamplesThe SCH9 null strain has smaller cell size, grows at a slower rate and survives three times longer than wide-type yeast.
Comparative analyses of time-course gene expression profiles of the long-lived sch9Delta mutant.
Age
View SamplesThe three yeast mutants sch9, ras2, tor1 show extended chronological life span up to three folds.
Significant and systematic expression differentiation in long-lived yeast strains.
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View SamplesThis SuperSeries is composed of the SubSeries listed below.
Extension of cortical synaptic development distinguishes humans from chimpanzees and macaques.
Sex, Age, Specimen part
View SamplesWe search for developmental changes specific to humans by examining gene expression profiles in the human, chimpanzee and rhesus macaque prefrontal and cerebellar cortex. In both brain regions, developmental patterns were more evolved in humans than in chimpanzees. To distinguish whether the human specific developmental pattern represent novel human-specific developmental patterns or a shift in the timing of the existing patterns, we measured mRNA expression patterns in macaque brains from prenatal to neonatal. Our results show that the major human-specific developmental patterns identified in the PFC reflects an extreme shift in timing of synaptic development.
Extension of cortical synaptic development distinguishes humans from chimpanzees and macaques.
Sex, Age, Specimen part
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