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Proteomic analysis of posterior silk gland of wild silkworm during developmental stages

ABSTRACT: We performed shotgun proteomic analysis of the posterior silk glands (PSGs) of wild silkworms on the 3rd and 5th days of the fifth instar.

INSTRUMENT(S): LTQ Orbitrap

ORGANISM(S): Bombyx Mori (silk Moth)

TISSUE(S): Posterior Silk Gland

SUBMITTER: Jian-ying Li

LAB HEAD: Bo-xiong Zhong

PROVIDER: PXD006655 | Pride | 2017-08-25

REPOSITORIES: Pride

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Dataset's files

Source:

			Action	DRS
	F001239.dat	Other
	F001239.pep.xml	Pepxml
	F001240.dat	Other
	F001240.pep.xml	Pepxml
	F001241.dat	Other

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Publications

Comparative Proteomic Analysis of Posterior Silk Glands of Wild and Domesticated Silkworms Reveals Functional Evolution during Domestication.

Li Jian-Ying JY Cai Fang F Ye Xiao-Gang XG Liang Jian-She JS Li Jian-Ke JK Wu Mei-Yu MY Zhao Dan D Jiang Zhen-Dong ZD You Zheng-Ying ZY Zhong Bo-Xiong BX

Journal of proteome research 20170612 7

The wild silkworm Bombyx mandarina was domesticated to produce silk in China approximately 5000 years ago. Silk production is greatly improved in the domesticated silkworm B. mori, but the molecular basis of the functional evolution of silk gland remains elusive. We performed shotgun proteomics with label-free quantification analysis and identified 1012 and 822 proteins from the posterior silk glands (PSGs) of wild silkworms on the third and fifth days of the fifth instar, respectively, with 128 ...[more]

PMID: 28569067

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Expression data from silkworm posterior silk glands at the late larval stages

Project description:The silkworm silk gland is one of the most efficient protein synthesis systems among all organisms. Its amazingly efficient protein synthesis makes the silk gland a desirable object for basic studies on gene expression and regulation and for biotechnological applications. At the early stages of the fifth (final) instar, the cellular structures necessary for the synthesis of fibroin are rapidly formed, and at the later stage the synthesis of fibroin proceeds at a maximum rate. The posterior silk gland (PSG) is the longest suborgan and is responsible for the synthesis of the silk core protein fibroin, which is composed of heavy (H) and light (L) chains plus P25. We used microarrays to detail the global programme of gene expression in silkworm PSG during the late larval stages, including the fourth molting (M4) and day 1 (V1), day 3 (V3), day 5 (V5), and day 7 (wandering stage, W) of the fifth instar, and to reveal the correlations of differential expression genes with the PSG development and fibroin synthesis. Silkworm PSGs were collected at M4, V1, V3, V5, and W stages for RNA extraction and hybridization on 23K Silkworm Genome Arrays (CapitalBio Corp., Beijing, China). Three groups of biological replicates were prepared at each time point.Dual-dye experiments were performed for the PSG at M4, V1, V3, V5, and W; a total of 15 samples were tested including three biological replicates at each stage. Aliquots of each test sample were pooled as a common reference sample (CKA). The test samples and CKA were labeled with Cy3 and Cy5, respectively.

2012-12-05 | E-GEOD-26172 | biostudies-arrayexpress

Expression data from silkworm posterior silk glands at the late larval stages

2012-12-05 | GSE26172 | GEO

Proteome identification of the silkworm middle silk gland

Project description:The middle silk gland (MSG) is an important silkworm sub-organ for synthesis and secretion of sericin proteins. To investigate the proteome differences among the anterior, middle, and posterior regions of silkworm MSG at the third day of the fifth instar, the extracted tissue proteins were digested in gel with trypsin followed by shotgun LC-MS/MS analysis with a LTQ-Orbitrap mass spectrometer.

2016-03-11 | PXD003371 | Pride

MicroRNA expression profiling of the fifth-instar posterior silk gland of Bombyx mori

2014-07-30 | GSE56380 | GEO

Global profiling of genes expressed in silk glands of Philippine-reared mulberry silkworm (Bombyx mori)

Project description:This study aims to bridge the gap in our knowledge of Philippine-reared silkworm by analyzing the gene expression profiles in the silkworm silk glands through next generation sequencing. RNA was isolated from the silk glands of 5th instar larvae and mRNA-enriched libraries were sequenced with NextSeq 500 (Illumina). To compare gene expression profiles of strains from CAR (Benguet) and TCMO (Misamis Oriental), DESeq2 analysis was performed. DESeq2 found 476 differentially expressed genes (222 upregulated, 254 downregulated) in CAR strains when compared to TCMO strains. Genes were mapped to protein IDs from the NCBI nr database and GO terms were assigned by mapping to the latest annotation data from KAIKObase. Enrichment of GO terms was analyzed using R package goseq. Among the top DEGs are myrosinase, heat shock proteins, serine protease inhibitors, dehydrogenases, and regulators of juvenile hormone. GO term enrichment analysis reveals overrepresentation of GO terms related to the biological processes nucleotide metabolism and biosynthesis, lipid and carbohydrate metabolic processes, regulation of transcription, and molecular functions related to nucleotide binding, protein binding, and metal binding, catalytic activity, oxidoreductase activity, and hydrolase activity. This study provides for the first time valuable information on the transcriptome of B. mori strains in the Philippines, which are adapted to the tropical environment. The transcriptome assemblies may serve as a resource for studies intended to improve local strains, particularly for increasing silk production.

2022-07-31 | GSE184152 | GEO

MicroRNA expression profiling of the fifth-instar posterior silk gland of Bombyx mori

Project description:Background: The growth and development of the posterior silk gland and the biosynthesis of the silk core protein at the fifth larval instar stage of Bombyx mori are of paramount importance for silk production. Results: Here, aided by next-generation sequencing and microarry assay, we profile 1,229 microRNAs (miRNAs), including 728 novel miRNAs and 110 miRNA/miRNA* duplexes, from the posterior silk gland at the fifth larval instar. Target gene prediction yields 14,222 unique target genes from 1,195 miRNAs. Functional categorization classifies the genes into complex pathways that include both cellular and metabolic processes, especially protein synthesis and processing. Conclusion: The enrichment of target genes in the ribosome-related pathway indicates that miRNAs may directly regulate translation. Our findings pave a way for further functional elucidation of these miRNAs in silk production. Sequencing 10 total RNA samples from the posterior silk gland of different strains and developmental stage using Illumina Solexa technology. Four strains of silkworm (Q, B, QB and BQ) with different two development stages (stage 1: fourth instar molting to day 2 of fifth instar; stage 2: fifth instar day 3 to day 8 before spinning, according to our previous genes expression cluster analysis), and two strains (R1 and J1) from entire period (stage 1 + stage 2).

2014-07-30 | E-GEOD-56380 | biostudies-arrayexpress

The fourth instar in the silk gland of silkworm LC-MSMS

Project description:In the present study, the silk gland proteomes of the fourth instar and fourth molt were analyzed using liquid chromatography−tandem mass spectrometry. In total, 2654 proteins were identified from the silk gland. High abundance of ribosomal proteins and RR-motif chitin-binding proteins were identified during day 2 of the fourth instar (IV-2) larval developmental stage, and the expression of cuticular proteins analogous to peritrophin (CPAP)-motif chitin-binding proteins was higher during the fourth molt (IV-M). In all, nine enzymes were found to be involved in the chitin regeneration pathway in the silk gland. Among them, two chitinase and two chitin deacetylases were identified as CPAP-motif proteins.

2018-06-04 | PXD008677 | Pride

The proteomics analyses of different tissues(the posterior silk gland of wild silkworm)

Project description:We collected a total of 9.8 million mass spectra data generated in the laboratory from the proteomics analyses of different silkworm tissues, including the posterior silk gland (29), middle silk gland (30), ovary and testis (31), head (32), brain, prothoracic glands, subesophageal ganglion (33), hemolymph (34), fat body (35) and embryo (36,37) of domestic silkworm, and the posterior silk gland of wild silkworm (38).

2019-07-01 | PXD009671 | Pride

Bombyx mori Posterior and Median Silk Gland SAGE transcriptome

Project description:To identify functions that distinguish the posterior and median cells producing fibroin and sericin in the silk gland of Bombyx mori, serial analysis of gene expression (SAGE) profiles from both silk gland regions were analyzed and compared. The construction of a B. mori reference tag collection extracted from a set of 38000 Bombyx EST sequenced from the 3’ side, helped annotating the SAGE libraries. Most of the tags appeared at similar relative concentration in the two libraries except for those corresponding to silk proteins that were found region-specific and highly abundant. Strikingly, besides tags from silk protein mRNAs, 19 tags were found in the class of high abundance in the median cell library, which were absent in the posterior cell tag collection. Except tags from SP1 mRNA, no PSG specific tags were found in the same class of abundance. The analysis of MSG-specific different transcripts led to suggest that middle silk gland cell realizes more diversified functions as those already known, of synthesis and secretion of the silk sericins.

2010-12-22 | GSE23098 | GEO

A single-cell transcriptomic atlas characterizes the silk-producing organ in the silkworm

Project description:The silk gland (SG) of the domesticated silkworm Bombyx mori, an economically important insect that has been used for silk production for over 5000 years, is a remarkable organ that produces vast amounts of silk with exceptional properties . Little is known about which SG cells execute silk protein synthesis and its precise spatiotemporal control. Here, we used single-cell RNA-seq to build a comprehensive cell atlas of the B. mori SG, consisting of 14,972 high-quality cells representing 10 distinct cell types, in three early developmental stages. We annotated all 10 cell types and determined their distributions in each region of the SG, decoded their developmental trajectory and gene-switch status, and discovered marker genes involved in the regulation of SG development and silk protein synthesis. Our study reveals the high heterogeneity of B. mori SG cells and their gene expression dynamics for the first time, affording a deeper understanding of silk-producing organs at the single-cell level .

2022-05-06 | GSE193279 | GEO

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