Bombyx mori
Ontology highlight
ABSTRACT:
PROVIDER: PRJDB19981 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:RNAi silencing of the SoxE gene suppresses cell proliferation in silkworm BmN4 cells
| PRJNA231656 | ENA
Project description:Background: MicroRNA (miRNA) and other small regulatory RNAs contribute to the modulation of a large number of cellular processes. We sequenced three total RNA libraries prepared from the whole body, and the anterior and posterior silk glands of Bombyx mori, with a view to expanding the repertoire of silkworm miRNAs and exploring transcriptional differences in miRNAs between segments of the silk gland. Results: With the aid of large-scale Solexa sequencing technology, we validated 244 unique miRNA genes, including 191 novel and 53 previously reported genes, corresponding to 309 loci in the silkworm genome. Interestingly, 24 unique miRNAs were widely conserved from invertebrates to vertebrates; 12 unique ones were limited to invertebrates and 33 were confined to insects; whereas the majority of the newly identified miRNAs were silkworm-specific. We identified 21 clusters and 42 paralogs of miRNAs in the silkworm genome. However, sequence tags showed that paralogs or clusters are not prerequisites for coordinated transcription and accumulation. The majority of silkworm-specific miRNAs are located in transposable elements, and display significant differences in abundance between the anterior and posterior silk glands. Conclusions: Conservative analysis revealed that miRNAs serve as phylogenetic markers and function in evolutionary signaling. The newly identified miRNAs greatly enriched the repertoire of insect miRNAs, and provide insights into miRNA evolution, biogenesis, and expression in insects. The differential expression of miRNAs in the anterior and posterior silk glands supports their involvement as new layers in the regulation of the silkworm silk gland.
2010-02-01 | GSE17965 | GEO
Project description:RNAs associating with PIWI proteins were Immunoisolated from BmN4 cells. Sequence libraries were generated with NEBNext Small RNA Library Prep Set for Illumina(NEB). Libraries were sequenced using Illumina MiSeq (single-end, 51 cycles).
2020-09-02 | GSE150444 | GEO
Project description:RNAs associating with PIWI proteins were Immunoisolated from BmN4 cells. Sequence libraries were generated with NEBNext Small RNA Library Prep Set for Illumina(NEB). Libraries were sequenced using Illumina MiSeq (single-end, 51 cycles).
2021-02-01 | GSE161405 | GEO
Project description:Background: MicroRNA (miRNA) and other small regulatory RNAs contribute to the modulation of a large number of cellular processes. We sequenced three total RNA libraries prepared from the whole body, and the anterior and posterior silk glands of Bombyx mori, with a view to expanding the repertoire of silkworm miRNAs and exploring transcriptional differences in miRNAs between segments of the silk gland. Results: With the aid of large-scale Solexa sequencing technology, we validated 244 unique miRNA genes, including 191 novel and 53 previously reported genes, corresponding to 309 loci in the silkworm genome. Interestingly, 24 unique miRNAs were widely conserved from invertebrates to vertebrates; 12 unique ones were limited to invertebrates and 33 were confined to insects; whereas the majority of the newly identified miRNAs were silkworm-specific. We identified 21 clusters and 42 paralogs of miRNAs in the silkworm genome. However, sequence tags showed that paralogs or clusters are not prerequisites for coordinated transcription and accumulation. The majority of silkworm-specific miRNAs are located in transposable elements, and display significant differences in abundance between the anterior and posterior silk glands. Conclusions: Conservative analysis revealed that miRNAs serve as phylogenetic markers and function in evolutionary signaling. The newly identified miRNAs greatly enriched the repertoire of insect miRNAs, and provide insights into miRNA evolution, biogenesis, and expression in insects. The differential expression of miRNAs in the anterior and posterior silk glands supports their involvement as new layers in the regulation of the silkworm silk gland. Sequencing three total RNA pools of the whole silkworm body from 5th-instar day-3 larvae, and anterior and posterior silkworm silk glands, using the latest sequencing Solexa technology
2010-02-01 | E-GEOD-17965 | biostudies-arrayexpress
Project description:Polycomb group (PcG) proteins are involved in chromatin modifications for maintaining gene repression that play important roles in the regulation of gene expression, tumorigenesis, chromosome X-inactivation, and genomic imprinting in Drosophila melanogaster, mammals, and even plants. PcG proteins act together in three multimeric complexes, Polycomb repressive complex 1 (PRC1), Polycomb repressive complex 2 (PRC2), and Pleiohomeotic repressive complex (PhoRC), to repress transcription of the target genes. Here, we identified Polycomb target genes in Bombyx mori using genome-wide expression screening based on the knockdown of the BmSCE, BmESC, BmPHO, or BmSCM gene, which represent the distinct complexes. As a result, most genes were up-regulated after knocking down these four PcG genes, which indicated a potential epigenetic mechanism on the regulation of these genes expression by the PcG system. The further analysis of our data will provide some important information for the regulation mediated by PcG proteins in Bombyx mori. Transcription profiling experiments, knockdowns of four Polycomb genes (four samples) in silkworm BmN4-SID1 cells, were analyzed. Dual-channel experiments, with test samples labeled by Cy5 and common reference samples labeled by Cy3. The common reference sample, knockdown of the EGFP gene in BmN4-SID1 cells, was used for data normalization. One biological replicate. No dye-swaps.
2012-04-17 | E-GEOD-34246 | biostudies-arrayexpress
Project description:We designed and constructed a genome-wide microarray with 22,987 70-mer oligonucleotides covering the presently known and predicted genes in the silkworm genome, and surveyed the gene expression in multiple silkworm tissues on day 3 of the fifth instar. Clusters of tissue-prevalent and tissue-specific genes and genes that are differentially expressed in different tissues were identified, and they reflect well major tissue-specific functions on the molecular level. The data presented in this study provide a new resource for annotating the silkworm genome.
2009-08-28 | GSE17571 | GEO
Project description:Transcriptome of BmN4 cells infected with two BmNPV strains
| PRJDB3931 | ENA
Project description:Transcriptome of BmN4 cells infected with BmNPV T3 or La strains
| PRJDB8648 | ENA