Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Identification of equine mitochondrial DNA variants using long read sequencing

ABSTRACT: Identification of equine mitochondrial DNA variants using long-read sequencing

PROVIDER: PRJEB35937 | ENA |

REPOSITORIES: ENA

ACCESS DATA

Json Xml

Dataset's files

Source:

			Action	DRS
	ERR3774120_1.fastq.gz	Fastqsanger.gz
	ERR3774130_1.fastq.gz	Fastqsanger.gz
	ERR3774111_1.fastq.gz	Fastqsanger.gz
	ERR3774121_1.fastq.gz	Fastqsanger.gz
	ERR3774131_1.fastq.gz	Fastqsanger.gz

Items per page:

1 - 5 of 21

Similar Datasets

A new method for long-read sequencing of animal mitochondrial genomes: application to the identification of equine mitochondrial DNA variants.

Project description:BackgroundMitochondrial DNA is remarkably polymorphic. This is why animal geneticists survey mitochondrial genomes variations for fundamental and applied purposes. We present here an approach to sequence whole mitochondrial genomes using nanopore long-read sequencing. Our method relies on the selective elimination of nuclear DNA using an exonuclease treatment and on the amplification of circular mitochondrial DNA using a multiple displacement amplification step.ResultsWe optimized each preparative step to obtain a 100 million-fold enrichment of horse mitochondrial DNA relative to nuclear DNA. We sequenced these amplified mitochondrial DNA using nanopore sequencing technology and obtained mitochondrial DNA reads that represented up to half of the sequencing output. The sequence reads were 2.3 kb of mean length and provided an even coverage of the mitochondrial genome. Long-reads spanning half or more of the whole mtDNA provided a coverage that varied between 118X and 488X. We evaluated SNPs identified using these long-reads by Sanger sequencing as ground truth and found a precision of 100.0%; a recall of 93.1% and a F1-score of 0.964 using the Twilight horse mtDNA reference. The choice of the mtDNA reference impacted variant calling efficiency with F1-scores varying between 0.947 and 0.964.ConclusionsOur method to amplify mtDNA and to sequence it using the nanopore technology is usable for mitochondrial DNA variant analysis. With minor modifications, this approach could easily be applied to other large circular DNA molecules.

| S-EPMC7661214 | biostudies-literature

Cataloging the potential functional diversity of Cacna1e splice variants using long-read sequencing

Project description:The degree to which alternative RNA splicing influences the function and structure of voltage gated calcium channel (VGCC) splice variants is poorly understood. Here we used long-read RNA-sequencing to catalog rat Cacna1e (Cav2.3) splice variants, and computationally prioritize which are likely to impact channel function. We sequenced Cacna1e transcripts from rat thalamus using Oxford Nanopore sequencing yielding the structure of 2,110 Cacna1e splice variants. Of these, up to 154 had the potential encode for a functional channel based on predicted amino acid sequences. Our analysis revealed a total of 31 cassette splicing events (in various combinations) potentially affecting channel function, with three cassette exons appreciably expressed and conserved.

2025-07-03 | GSE295903 | GEO

Gene expression profiling in equine polysaccharide storage myopathy

2009-04-08 | GSE15572 | GEO

Identification of TERT Delta 2-4 knockdown effect by Long read RNA seq.

Project description:All cancer cells must adopt a telomere maintenance mechanism to achieve replicative immortality. Most human cancer cells utilize the enzyme telomerase to maintain telomeres. Alternative splicing of TERT regulates the amount and function of telomerase, however many alternative splicing isoforms of TERT have unknown functions. Single molecule long read RNA/cDNA sequencing of TERT revealed 45 TERT mRNA variants including 13 known and 32 novel variants. Among the variants, TERT Delta 2-4, which lacks exons 2-4 but retains the original open reading frame, was selected for further study. Induced pluripotent stem cells and cancer cells express higher levels of TERT Delta 2-4 compared to primary human bronchial epithelial cells. Overexpression of TERT Delta 2-4 enhanced clonogenicity and resistance to cisplatin- induced apoptosis. Knockdown of endogenous TERT Delta 2-4 in Calu-6 cells reduced clonogenicity and resistance to cisplatin. Our results suggest that TERT Delta 2-4 enhances cancer cells’ resistance to intrinsic apoptosis. RNA sequencing following knockdown of Delta 2-4 TERT indicates that translation is downregulated and that mitochondrial related proteins are upregulated compared to controls. Overall, our data indicate that TERT produces many isoforms that influence the function TERT and the abundance and activity of telomerase.

2025-03-05 | GSE279438 | GEO

Long-read RNA Sequencing Improves the Annotation of the Equine Transcriptome

Project description:Improved Equine Transcriptome

| PRJEB53020 | ENA

Gene expression profiling in equine polysaccharide storage myopathy

Project description:Standardized muscular biopsies of the dorsal compartment of the gluteus medius muscle were performed in 7 horses suffering from equine polysaccharide storage myopathy (PSSM) and 6 sound Norman Cob horses . Gene expression analysis was performed using an equine oligonucleotide microarray which included 384 equine gene probes of the nuclear genome and all the mitochondrial genes. All the samples of PSSM muscles were hybridized against the reference control muscles. This reference was made by pooling together all the mRNA extracted after in vitro transcription from the 6 control muscles of the sound horses. Briefly, the hybridization protocol was adapted from Le Brigand et al. (2006). An open-access long oligonucleotide microarray resource for analysis of the human and mouse transcriptomes. Nucleic Acids Res. 2006 Jul 19;34(12).

2009-04-08 | E-GEOD-15572 | biostudies-arrayexpress

Investigating equine genetic diseases

Project description:Identifying sequence variants for equine diseases

| PRJEB88483 | ENA

Linked-Read Sequencing to Resolve Complex Structural Variants

Project description:Linked-Read Sequencing to Resolve Complex Structural Variants

| PRJNA516493 | ENA

Linked-Read Sequencing to Resolve Complex Structural Variants

Project description:Linked-Read Sequencing to Resolve Complex Structural Variants

| PRJNA516494 | ENA

Pathogenic PDE12 variants impair mitochondrial RNA processing causing neonatal-onset mitochondrial disease

Project description:The PDE12 gene codes for the poly(A)-specific exoribonuclease, involved in the quality control of mitochondrial non-coding RNAs. Here, we report that disease-causing PDE12 variants in three unrelated families are associated with mitochondrial respiratory chain deficiencies. Clinically, they presented in utero and within the neonatal period with muscle and brain involvement leading to marked cytochrome c oxidase (COX) deficiency in muscle and severe lactic acidosis. To analyze perturbations in specific cellular pathways contributing to pathogenesis in our patient cohort, we used Affymetrix Clariom D transcriptome arrays to study the RNA levels in fibroblasts derived from two patient (Patient 2 and patient 3), comparing these to age-matched controls.

2024-09-29 | E-MTAB-14251 | biostudies-arrayexpress

OmicsDI is part of the ELIXIR infrastructure

OmicsDI is an Elixir interoperability service. Learn more ›

Tweets

OmicsDI Databases

PRIDE
PeptideAtlas
MassIVE
JPOST Repository
Physiome Model Repository

EGA
EVA
ENA
LINCS
PAXDB
Cell Collective

MetaboLights
Metabolomics Workbench
MetabolomeExpress
GNPS
BioModels
FAIRDOMHub

ArrayExpress
dbGaP
ExpressionAtlas
GEO
NODE

Information

Databases
Help
API
Contact us
Code on GitHub
Terms of use
Submit Data