Project description:SPO11-promoted DNA double-strand breaks (DSBs) formation is a crucial step for meiotic recombination, and it is indispensable to detect the broken DNA ends accurately for dissecting the molecular mechanisms behind. Here, we report a novel technique, named DEtail-seq (DNA End tailing followed by sequencing), that can directly and quantitatively capture the meiotic DSB 3’ overhang hotspots at single-nucleotide resolution.
Project description:In this study, to obtain a complete registry of genetic lesions in MDS and to identify novel therapeutic targets, we performed SNP array analysis and whole exome analysis for novel mutations using high-throughput sequencing technologies. In whole exome analysis, paired CD3-positive T cells were used as a normal control. By comparing sequences in tumors and paired T cells, 268 non-synonymous somatic mutations were confirmed with an overall true positive rate of 53.9 %, including 206 missense, 25 nonsense, and 10 splice site mutations, and 27 frameshift-causing insertions/deletions (indels). The mutations of the known gene targets, however, accounted for only 12.3 % of all detected mutations (N = 33), and the remaining 235 mutations involved previously unreported genes. Combined with the genomic copy number profile obtained by SNP array karyotyping, this array of somatic mutations provided a landscape of myelodysplasia genomes. Copy number analysis of Affymetrix 250K SNP arrays was performed for 29 MDS or related neoplasms and paired 29 germline samples.
Project description:In this study, to obtain a complete registry of genetic lesions in MDS and to identify novel therapeutic targets, we performed SNP array analysis and whole exome analysis for novel mutations using high-throughput sequencing technologies. In whole exome analysis, paired CD3-positive T cells were used as a normal control. By comparing sequences in tumors and paired T cells, 268 non-synonymous somatic mutations were confirmed with an overall true positive rate of 53.9 %, including 206 missense, 25 nonsense, and 10 splice site mutations, and 27 frameshift-causing insertions/deletions (indels). The mutations of the known gene targets, however, accounted for only 12.3 % of all detected mutations (N = 33), and the remaining 235 mutations involved previously unreported genes. Combined with the genomic copy number profile obtained by SNP array karyotyping, this array of somatic mutations provided a landscape of myelodysplasia genomes.
Project description:Asthma is a chronic inflammatory airway disease characterized by airway inflammation and remodeling. The role of 15-oxo-5Z,8Z,11Z,13E-eicosatetraenoic acid (15-oxoETE), a 15-HETE metabolite catalyzed by 15-prostaglandin dehydrogenase (15-PGDH), has been relatively unexplored in asthma. In this study, we used RNA-seq to explore the effect of 15-KETE on the transcriptome of airway epithelial cells, aiming to identify its potential downstream targets and mechanisms of action.