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The identification of SNP repertoir in microRNA genes in the pig with the use of targeted sequencing approach.

ABSTRACT: The aim of the research was to identify SNP polymorphisms in microRNA genes with the use of targeted DNA sequencing to broaden the general knowledge of these genes and the repertoir of SNPs in the pig, and the influence of SNPs on miRNA functioning.

INSTRUMENT(S): Illumina HiScanSQ

ORGANISM(S): Sus Scrofa

SUBMITTER: National Research Institute of Animal Production

PROVIDER: PRJEB43246 | EVA | 2021-02-23

REPOSITORIES: EVA

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			Action	DRS
	Pig_results.accessioned.vcf.gz	Vcf
	Pig_results.accessioned.vcf.gz.tbi	Vcf

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Project description:Somatic mutation in the X-linked phosphatidylinositol glycan class A (PIG-A) gene causes glycosylphosphatidylinositol (GPI) anchor deficiency in humans with Paroxysmal Nocturnal Hemoglobinuria (PNH). Clinically, patients with PNH have intravascular hemolysis, venous thrombosis and bone marrow failure. We produced a conditional Pig-a knock-out mouse model specifically inactivating the Pig-a gene in hematopoietic cells to study the role of PIG-A deficiency in PNH pathophysiology. We used Affymetrix Mouse Genome 430 2.0 chips to investigate the gene expression pattern in the mouse model of targeted Pig-a deletion. Experiment Overall Design: We performed microarray analysis on 3 pools of sorted GPI-deficient (GPI-) and GPI normal (GPI+) bone marrow cells derived from the same Pig-a knock-out animals, and identified 1275/669 genes of the 45,101 transcripts potentially available for screening using 2-fold change, <10% false discovery rate (FDR) and percentage of present calls as selection criteria. The major representative genes belong to the category of immune response. We tested whether the molecular differences between GPI- and GPI+ bone marrow cells could be preserved when GPI- cells were transplanted in lethally-irradiated wild type mice (C57BL/6). Microarray analysis was performed using sorted bone marrow cells from 4 animals transplanted with GPI-deficient bone marrow cells (T-GPI-) from Pig-a knock-out donors, 3 animals transplanted with GPI-normal bone marrow cells from C57BL/6 donors (T-GPI+), and GPI-normal bone marrow cells from 4 wild-type C57BL/6 mice (WT-GPI+). We found 296 probesets with 2-fold change cutoff, of which T-GPI- cells had 145 up-regulated genes in comparison to WT-GPI+ cells, and had 123 genes differentially expressed when compared to T-GPI+ cells. The gene expression of the GPI-deficient cells was very similar between the two sets of microarray experiments affirming the maintenance of the phenotype before and after bone marrow cell transplantation.

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The identification of SNP repertoir in microRNA genes in the pig with the use of targeted sequencing approach.

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