RNA sequences are generally identical to the underlying DNA sequences but there are known exceptions. These RNA-DNA differences (RDDs) have been found in the nuclear genomes of human cells and in the mitochondria of plants and animals but not in human mitochondria. Here by deep sequencing of DNA and RNA of human mitochondria, we identified 3 RDD sites including an A-to-U and an A-to-G RDD at position 2617. Examination of the precursor polycistronic mitochondrial transcripts shows that the RDD formation occurs post-transcriptionally. Phylogenetic analysis shows that the ancestral allele at position 2617 was a thymine or a guanine. Thus the RDD formation recapitulates the ancestral form of 16S rRNA. Our findings show that RDD formation like other RNA processing steps is conserved across species and likely has functional significance.
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View SamplesThis study crossed Drosophila melanogaster genotypes from four populations to the reference genome line. RNAseq data was then generated to study natural variation in allele specific expression.
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Sex, Specimen part, Cell line
View SamplesThe equine hoof is a specialized structure in which the distal skeleton is suspended within the capsule by interdigitated structures known as laminae. Inflammation of this tissue, known as laminitis, is a devastating disease that is the second leading cause of both lameness and euthanasia in the horse. Current research on the laminitic transcriptome focuses on the expression of known genes. However, as this tissue is quite unique and equine annotation is largely derived from computational predictions and gene models from other species, there are likely yet uncharacterized transcripts expressed in the laminae that may be involved in the etiology of laminitis. In order to create a novel annotation resource, we performed whole transcriptome sequencing of sagittal lamellar sections from one control and two laminitis affected horses. Assembly of 113 million 100bp reads resulted in around 75,000 transcripts. Of these, 36,000 corresponded to known annotation in NCBI's non-redundant protein database. RT-PCR of 12 selected annotations confirmed structure and expression in lamellar tissue. Transcriptome sequencing represents a powerful tool to expand on equine annotation and identify novel targets for further laminitis research.
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View SamplesWT cells and mutants during growth on low phosphate levels and recovery
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Specimen part, Disease, Cell line
View SamplesWT and mutants cells during growth in low phosphate levels and recovery into 20mM phosphate
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Specimen part, Disease, Cell line
View Samplesthe mRNA expression of pig lung tissue. there are four groups: LW pigs infected with PCV2, LW pigs control, Yorkshire × Landrace (YL) pigs infected with PCV2, Yorkshire × Landrace (YL) pigs control.
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Sex, Age, Specimen part, Disease, Disease stage, Cell line, Treatment
View SamplesIdentification of circular RNAs in zebrafish
Identification and characterization of circular RNAs in zebrafish.
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View SamplesRNA-sequencings of TSPY1-overexpressed A549 and HepG2 cells were performed to systematically explore the signaling pathways in which TSPY1 is involved during tumor progression.
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Sex, Age, Specimen part, Cell line, Treatment
View SamplesUsing HiSeq2000 to sequence white leghorn different parts (ovary, magnum, isthmus and uterus) of oviduct at 40-weeks.
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View SamplesIn this study, we performed a NGS analysis to identify transcriptome landscape of the human placenta during uncomplicated single and twin pregnancy, to establish a pattern of normal placental genes expression for further comprehensive analyses. Additionall aim of these studies was to identify the differentially expressed transcripts of genes in single and twin pregnancy that may participate in human pregnancy.
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Sex, Age, Specimen part, Disease
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