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Liu Z, Li C, Yang W, Wu Q, Xiao W, Zhu Y, Wei Q, Dong Z, Zhang G, Lu C, Pan M, Chen P. The Bombyx mori singed Gene Is Involved in the High-Temperature Resistance of Silkworms. INSECTS 2024; 15:264. [PMID: 38667394 PMCID: PMC11049829 DOI: 10.3390/insects15040264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 04/10/2024] [Accepted: 04/10/2024] [Indexed: 04/28/2024]
Abstract
Temperature is an important factor in the growth, development, survival, and reproduction of organisms. The high-temperature resistance mechanism of insects may be significant for use in the prevention and control of insect pests. The silkworm, Bombyx mori, is an important Lepidoptera model species for studies on pest control in agriculture and forestry. We identified a gene in B. mori, the B. mori singed (Bmsn) gene, which is involved in the high-temperature resistance of silkworms. Sn proteins are highly conserved among species in many taxonomic groups. The overexpression of the Bmsn gene promoted the proliferation of silkworm cells, reduced oxidation, and reduced the accumulation of reactive oxygen species under stress. Interfering with the Bmsn gene had the opposite result. We constructed a transgenic B. mori strain that overexpressed the Bmsn gene. The physiological traits of the transgenic strain were significantly improved, and it had stronger high-temperature resistance. The Bmsn gene is involved in the process by which fat bodies respond to high-temperature stress. These findings provide insights into the mechanism of high-temperature resistance of insects and offer a new perspective on agricultural and forestry pest control.
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Affiliation(s)
- Zhenye Liu
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400715, China; (Z.L.); (C.L.); (W.Y.); (Q.W.); (W.X.); (Y.Z.); (Q.W.); (Z.D.); (C.L.)
| | - Cong Li
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400715, China; (Z.L.); (C.L.); (W.Y.); (Q.W.); (W.X.); (Y.Z.); (Q.W.); (Z.D.); (C.L.)
| | - Wenyu Yang
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400715, China; (Z.L.); (C.L.); (W.Y.); (Q.W.); (W.X.); (Y.Z.); (Q.W.); (Z.D.); (C.L.)
| | - Qiao Wu
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400715, China; (Z.L.); (C.L.); (W.Y.); (Q.W.); (W.X.); (Y.Z.); (Q.W.); (Z.D.); (C.L.)
| | - Wenfu Xiao
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400715, China; (Z.L.); (C.L.); (W.Y.); (Q.W.); (W.X.); (Y.Z.); (Q.W.); (Z.D.); (C.L.)
- Sericultural Research Institute, Sichuan Academy of Agricultural Sciences, Nanchong 637000, China
| | - Yan Zhu
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400715, China; (Z.L.); (C.L.); (W.Y.); (Q.W.); (W.X.); (Y.Z.); (Q.W.); (Z.D.); (C.L.)
| | - Qiongqiong Wei
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400715, China; (Z.L.); (C.L.); (W.Y.); (Q.W.); (W.X.); (Y.Z.); (Q.W.); (Z.D.); (C.L.)
| | - Zhanqi Dong
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400715, China; (Z.L.); (C.L.); (W.Y.); (Q.W.); (W.X.); (Y.Z.); (Q.W.); (Z.D.); (C.L.)
| | - Guizheng Zhang
- Guangxi Key Laboratory of Sericultural Genetic Improvement and Efficient Breeding, Sericulture Technology Promotion Station of Guangxi, Nanning 530007, China;
| | - Cheng Lu
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400715, China; (Z.L.); (C.L.); (W.Y.); (Q.W.); (W.X.); (Y.Z.); (Q.W.); (Z.D.); (C.L.)
| | - Minhui Pan
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400715, China; (Z.L.); (C.L.); (W.Y.); (Q.W.); (W.X.); (Y.Z.); (Q.W.); (Z.D.); (C.L.)
| | - Peng Chen
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400715, China; (Z.L.); (C.L.); (W.Y.); (Q.W.); (W.X.); (Y.Z.); (Q.W.); (Z.D.); (C.L.)
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Monson EA, Trenerry AM, Laws JL, Mackenzie JM, Helbig KJ. Lipid droplets and lipid mediators in viral infection and immunity. FEMS Microbiol Rev 2021; 45:fuaa066. [PMID: 33512504 PMCID: PMC8371277 DOI: 10.1093/femsre/fuaa066] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Accepted: 12/02/2020] [Indexed: 12/14/2022] Open
Abstract
Lipid droplets (LDs) contribute to key pathways important for the physiology and pathophysiology of cells. In a homeostatic view, LDs regulate the storage of neutral lipids, protein sequestration, removal of toxic lipids and cellular communication; however, recent advancements in the field show these organelles as essential for various cellular stress response mechanisms, including inflammation and immunity, with LDs acting as hubs that integrate metabolic and inflammatory processes. The accumulation of LDs has become a hallmark of infection, and is often thought to be virally driven; however, recent evidence is pointing to a role for the upregulation of LDs in the production of a successful immune response to viral infection. The fatty acids housed in LDs are also gaining interest due to the role that these lipid species play during viral infection, and their link to the synthesis of bioactive lipid mediators that have been found to have a very complex role in viral infection. This review explores the role of LDs and their subsequent lipid mediators during viral infections and poses a paradigm shift in thinking in the field, whereby LDs may play pivotal roles in protecting the host against viral infection.
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Affiliation(s)
- Ebony A Monson
- School of Life Sciences, La Trobe University, Melbourne, Australia, 3083
| | - Alice M Trenerry
- Department of Microbiology and Immunology, University of Melbourne, at the Peter Doherty Institute for Infection and Immunity, Melbourne, Australia, 3000
| | - Jay L Laws
- School of Life Sciences, La Trobe University, Melbourne, Australia, 3083
| | - Jason M Mackenzie
- Department of Microbiology and Immunology, University of Melbourne, at the Peter Doherty Institute for Infection and Immunity, Melbourne, Australia, 3000
| | - Karla J Helbig
- School of Life Sciences, La Trobe University, Melbourne, Australia, 3083
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Lagrutta LC, Layerenza JP, Bronsoms S, Trejo SA, Ves-Losada A. Nuclear-lipid-droplet proteome: carboxylesterase as a nuclear lipase involved in lipid-droplet homeostasis. Heliyon 2021; 7:e06539. [PMID: 33817385 PMCID: PMC8010399 DOI: 10.1016/j.heliyon.2021.e06539] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 09/11/2019] [Accepted: 03/12/2021] [Indexed: 11/20/2022] Open
Abstract
Nuclear-lipid droplets (nLD)—a dynamic cellular organelle that stores neutral lipids, within the nucleus of eukaryotic cells—consists of a hydrophobic triacylglycerol –cholesterol-ester core enriched in oleic acid (OA) surrounded by a monolayer of polar lipids, cholesterol, and proteins. nLD are probably involved in nuclear-lipid homeostasis serving as an endonuclear buffer that provides or incorporates lipids and proteins participating in signaling pathways, as transcription factors and enzymes of lipid metabolism and nuclear processes. In the present work, we analyzed the nLD proteome and hypothesized that nLD-monolayer proteins could be involved in processes similar as the ones occurring in the cLD including lipid metabolism and other cellular functions. We evaluated the rat-liver–nLD proteome under physiological and nonpathological conditions by GeLC-MS2. Since isolated nLD are highly diluted, a protein-concentrating isolation protocol was designed. Thirty-five proteins were identified within the functional categories: cytoskeleton and structural, transcription and translation, histones, protein-folding and posttranslational modification, cellular proliferation and/or cancer, lipid metabolism, and transport. Purified nLD contained an enzyme from the lipid-metabolism pathway, carboxylesterase 1d (Ces1d/Ces3). Nuclear Carboxylesterase localization was confirmed by Western blotting. By in-silico analyses rat Ces1d/Ces3 secondary and tertiary structure predicted would be equivalent to human CES1. These results—the first nLD proteome—demonstrate that a tandem-GeLC-MS2-analysis protocol facilitates studies like these on rat-liver nuclei. A diversity of cellular-protein function was identified indicating the direct or indirect nLD participation and involving Ces1d/Ces3 in the LD-population homeostasis.
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Affiliation(s)
- Lucía C. Lagrutta
- Instituto de Investigaciones Bioquímicas de La Plata “Profesor Doctor Rodolfo R. Brenner” (INIBIOLP-CCT-La Plata-CONICET-UNLP), La Plata, Argentina
| | - Juan P. Layerenza
- Instituto de Investigaciones Bioquímicas de La Plata “Profesor Doctor Rodolfo R. Brenner” (INIBIOLP-CCT-La Plata-CONICET-UNLP), La Plata, Argentina
| | - Silvia Bronsoms
- Servei de Proteómica i Biología Estructural de la Universitat Autonma de Barcelona, Barcelona, Spain
| | - Sebastián A. Trejo
- Servei de Proteómica i Biología Estructural de la Universitat Autonma de Barcelona, Barcelona, Spain
- Corresponding author.
| | - Ana Ves-Losada
- Instituto de Investigaciones Bioquímicas de La Plata “Profesor Doctor Rodolfo R. Brenner” (INIBIOLP-CCT-La Plata-CONICET-UNLP), La Plata, Argentina
- Departamento de Ciencias Biológicas, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, La Plata, Argentina
- Corresponding author.
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Ye X, Tang X, Wang X, Che J, Wu M, Liang J, Ye L, Qian Q, Li J, You Z, Zhang Y, Wang S, Zhong B. Improving Silkworm Genome Annotation Using a Proteogenomics Approach. J Proteome Res 2019; 18:3009-3019. [PMID: 31250652 DOI: 10.1021/acs.jproteome.8b00965] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The silkworm genome has been deeply sequenced and assembled, but accurate genome annotation, which is important for modern biological research, remains far from complete. To improve silkworm genome annotation, we carried out a proteogenomics analysis using 9.8 million mass spectra collected from different tissues and developmental stages of the silkworm. The results confirmed the translational products of 4307 existing gene models and identified 1701 novel genome search-specific peptides (GSSPs). Using these GSSPs, 74 novel gene-coding sequences were identified, and 121 existing gene models were corrected. We also identified 1182 novel junction peptides based on an exon-skipping database that resulted in the identification of 973 alternative splicing sites. Furthermore, we performed RNA-seq analysis to improve silkworm genome annotation at the transcriptional level. A total of 1704 new transcripts and 1136 new exons were identified, 2581 untranslated regions (UTRs) were revised, and 1301 alternative splicing (AS) genes were identified. The transcriptomics results were integrated with the proteomics data to further complement and verify the new annotations. In addition, 14 incorrect genes and 10 skipped exons were verified using the two analysis methods. Altogether, we identified 1838 new transcripts and 1593 AS genes and revised 5074 existing genes using proteogenomics and transcriptome analyses. Data are available via ProteomeXchange with identifier PXD009672. The large-scale proteogenomics and transcriptome analyses in this study will greatly improve silkworm genome annotation and contribute to future studies.
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Affiliation(s)
- Xiaogang Ye
- College of Animal Sciences , Zhejiang University , Hangzhou , P. R. China
| | - Xiaoli Tang
- College of Animal Sciences , Zhejiang University , Hangzhou , P. R. China
| | - Xiaoxiao Wang
- College of Animal Sciences , Zhejiang University , Hangzhou , P. R. China
| | - Jiaqian Che
- College of Animal Sciences , Zhejiang University , Hangzhou , P. R. China
| | - Meiyu Wu
- College of Animal Sciences , Zhejiang University , Hangzhou , P. R. China
| | - Jianshe Liang
- College of Animal Sciences , Zhejiang University , Hangzhou , P. R. China
| | - Lupeng Ye
- College of Animal Sciences , Zhejiang University , Hangzhou , P. R. China
| | - Qiujie Qian
- College of Animal Sciences , Zhejiang University , Hangzhou , P. R. China
| | - Jianying Li
- College of Animal Sciences , Zhejiang University , Hangzhou , P. R. China
| | - Zhengying You
- College of Animal Sciences , Zhejiang University , Hangzhou , P. R. China
| | - Yuyu Zhang
- College of Animal Sciences , Zhejiang University , Hangzhou , P. R. China
| | - Shaohua Wang
- College of Animal Sciences , Zhejiang University , Hangzhou , P. R. China
| | - Boxiong Zhong
- College of Animal Sciences , Zhejiang University , Hangzhou , P. R. China
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Abstract
In this study, we identified a heat-resistant protein from the chrysalis stage of the silkworm which we named sex-specific storage protein 2 (SSP2). This protein was stable even at 80 °C, and has an amino acid sequence that is 90.65 % homologous to SP2. We utilized the heat-resistant characteristics of SSP2 to purify the protein and maintain its biological activity. In addition, using flow cytometry and the MTT assay, we found that SSP2 had anti-apoptotic effects on BmN cells, and that SSP2 could also inhibit cell apoptosis induced by chemical factors. These results suggest that SSP2 has a cell-protective function, and provides a basis for future work on the function of storage proteins in silkworm.
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Bovilla VR, Padwal MK, Siripurapu P, Basu B, Mamillapalli A. Developmental proteome dynamics of silk glands in the 5th instar larval stage of Bombyx mori L (CSR2×CSR4). BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2016; 1864:860-8. [PMID: 27032299 DOI: 10.1016/j.bbapap.2016.03.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Revised: 02/23/2016] [Accepted: 03/15/2016] [Indexed: 10/22/2022]
Abstract
UNLABELLED Bivoltine breed of Bombyx mori (B. mori), CSR2×CSR4 is an Indian high yielding silkworm strain. Silk gland proteome of this strain was not studied till now. Methods of improving silk production by chemical approaches have reached saturation and transgenic methods are needed in further to boost silk production. An understanding of proteomic changes during silk gland development helps in designing experiments to enhance silk production by transgenic approaches. The present study reports comprehensive developmental proteomic analysis of CSR2×CSR4, 5th instar whole silk glands. Eighty six unique protein IDs were obtained from the analysis of one hundred and twenty protein spots. Among the identified proteins, majority of the proteins were involved in metabolism (41%) followed by proteins involved in protein homeostasis (30%). Sixty percent of the identified proteins showed dynamic nature by expression analysis from day 1, day 3, day 5 and day 7 gels. In comparison to the published data till now on silk gland proteomics this study reports identification of 20 new proteins from the silk glands for the first time. SIGNIFICANCE The paper reports for the first time proteomic analysis of high yielding silkworm strain of India. The study analyzes whole silk glands to understand the tissue in total during 5th instar development. Lowering fibroin content made us to identify a large number of new proteins which were not reported till now in the silk gland proteome. Proteins which are involved in silk synthesis and release were found to be developmentally regulated. The study identified alanine, serine and glycine tRNA ligases for the first time and also showed their up-regulation on day 7 of 5th instar larval stage. The amino acid repeat of fibroin protein is enriched with the three amino acids, glycine, serine and alanine. The identified proteins could be studied further to understand their functional role in-depth.
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Affiliation(s)
- Venugopal Reddy Bovilla
- Department of Biotechnology, GITAM Institute of Science, GITAM University, Visakhapatnam 530045, India
| | - Mahesh Kumar Padwal
- Molecular Biology Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - Prasanthi Siripurapu
- Department of Biotechnology, GITAM Institute of Science, GITAM University, Visakhapatnam 530045, India
| | - Bhakti Basu
- Molecular Biology Division, Bhabha Atomic Research Centre, Mumbai 400085, India.
| | - Anitha Mamillapalli
- Department of Biotechnology, GITAM Institute of Science, GITAM University, Visakhapatnam 530045, India.
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Yang P, Chen XM, Liu WW, Feng Y, Sun T. Transcriptome analysis of sexually dimorphic Chinese white wax scale insects reveals key differences in developmental programs and transcription factor expression. Sci Rep 2015; 5:8141. [PMID: 25634031 PMCID: PMC4311254 DOI: 10.1038/srep08141] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2014] [Accepted: 01/08/2015] [Indexed: 12/17/2022] Open
Abstract
The Chinese white wax scale insect, Ericerus pela, represents one of the most dramatic examples of sexual dimorphism in any insect species. In this study, we showed that although E. pela males display complete metamorphosis similar to holometabolous insects, the species forms the sister group to Acyrthosiphon pisum and cluster with hemimetabolous insects. The gene expression profile and Gene Ontology (GO) analyses revealed that the two sexes engaged in distinct developmental programs. In particular, female development appeared to prioritize the expression of genes related to cellular, metabolic, and developmental processes and to anatomical structure formation in nymphs. By contrast, male nymphal development is characterized by the significant down-regulation of genes involved in chitin, the respiratory system, and neurons. The wing and appendage morphogenesis, anatomical and tissue structure morphogenesis programs activated after male nymphal development. Transcription factors (that convey juvenile hormone or ecdysone signals, and Hox genes) and DNA methyltransferase were also differentially expressed between females and males. These results may indicate the roles that these differentially expressed genes play in regulating sexual dimorphism through orchestrating complex genetic programs. This differential expression was particularly prominent for processes linked to female development and wing development in males.
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Affiliation(s)
- Pu Yang
- Research Institute of Resources Insects, Chinese Academy of Forestry, Key Laboratory of Cultivating and Utilization of Resources Insects of State Forestry Administration, Kunming, 650224, China
| | - Xiao-Ming Chen
- Research Institute of Resources Insects, Chinese Academy of Forestry, Key Laboratory of Cultivating and Utilization of Resources Insects of State Forestry Administration, Kunming, 650224, China
| | - Wei-Wei Liu
- Research Institute of Resources Insects, Chinese Academy of Forestry, Key Laboratory of Cultivating and Utilization of Resources Insects of State Forestry Administration, Kunming, 650224, China
| | - Ying Feng
- Research Institute of Resources Insects, Chinese Academy of Forestry, Key Laboratory of Cultivating and Utilization of Resources Insects of State Forestry Administration, Kunming, 650224, China
| | - Tao Sun
- Research Institute of Resources Insects, Chinese Academy of Forestry, Key Laboratory of Cultivating and Utilization of Resources Insects of State Forestry Administration, Kunming, 650224, China
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Xia Q, Li S, Feng Q. Advances in silkworm studies accelerated by the genome sequencing of Bombyx mori. ANNUAL REVIEW OF ENTOMOLOGY 2013; 59:513-536. [PMID: 24160415 DOI: 10.1146/annurev-ento-011613-161940] [Citation(s) in RCA: 201] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Significant progress has been achieved in silkworm (Bombyx mori) research since the last review on this insect was published in this journal in 2005. In this article, we review the new and exciting progress and discoveries that have been made in B. mori during the past 10 years, which include the construction of a fine genome sequence and a genetic variation map, the evolution of genomes, the advent of functional genomics, the genetic basis of silk production, metamorphic development, immune response, and the advances in genetic manipulation. These advances, which were accelerated by the genome sequencing project, have promoted B. mori as a model organism not only for lepidopterans but also for general biology.
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Affiliation(s)
- Qingyou Xia
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400715, China;
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Zhong XW, Zou Y, Liu SP, Yi QY, Hu CM, Wang C, Xia QY, Zhao P. Proteomic-based insight into Malpighian tubules of silkworm Bombyx mori. PLoS One 2013; 8:e75731. [PMID: 24098719 PMCID: PMC3787086 DOI: 10.1371/journal.pone.0075731] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2013] [Accepted: 08/15/2013] [Indexed: 11/18/2022] Open
Abstract
Malpighian tubules (MTs) are highly specific organs of arthropods (Insecta, Myriapoda and Arachnida) for excretion and osmoregulation. In order to highlight the important genes and pathways involved in multi-functions of MTs, we performed a systematic proteomic analysis of silkworm MTs in the present work. Totally, 1,367 proteins were identified by one-dimensional gel electrophoresis coupled with liquid chromatography-tandem mass spectrometry, and as well as by Trans Proteomic Pipeline (TPP) and Absolute protein expression (APEX) analyses. Forty-one proteins were further identified by two-dimensional gel electrophoresis. Some proteins were revealed to be significantly associated with various metabolic processes, organic solute transport, detoxification and innate immunity. Our results might lay a good foundation for future functional studies of MTs in silkworm and other lepidoptera.
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Affiliation(s)
- Xiao-wu Zhong
- State Key Laboratory of Silkworm Genome Biology (Southwest University), Chongqing, China
| | - Yong Zou
- State Key Laboratory of Silkworm Genome Biology (Southwest University), Chongqing, China
| | - Shi-ping Liu
- State Key Laboratory of Silkworm Genome Biology (Southwest University), Chongqing, China
| | - Qi-ying Yi
- State Key Laboratory of Silkworm Genome Biology (Southwest University), Chongqing, China
| | - Cui-mei Hu
- State Key Laboratory of Silkworm Genome Biology (Southwest University), Chongqing, China
| | - Chen Wang
- State Key Laboratory of Silkworm Genome Biology (Southwest University), Chongqing, China
| | - Qing-you Xia
- State Key Laboratory of Silkworm Genome Biology (Southwest University), Chongqing, China
| | - Ping Zhao
- State Key Laboratory of Silkworm Genome Biology (Southwest University), Chongqing, China
- * E-mail:
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Zhang YL, Xue RY, Cao GL, Zhu YX, Pan ZH, Gong CL. Shotgun proteomic analysis of wing discs from the domesticated silkworm (Bombyx mori) during metamorphosis. Amino Acids 2013; 45:1231-41. [PMID: 24005483 DOI: 10.1007/s00726-013-1588-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2013] [Accepted: 08/27/2013] [Indexed: 11/24/2022]
Abstract
Proteomic profiles from the wing discs of silkworms at the larval, pupal, and adult moth stages were determined using shotgun proteomics and MS sequencing. We identified 241, 218, and 223 proteins from the larval, pupal, and adult moth stages, respectively, of which 139 were shared by all three stages. In addition, there were 55, 37, and 43 specific proteins identified at the larval, pupal, and adult moth stages, respectively. More metabolic enzymes were identified among the specific proteins expressed in the wing disc of larvae compared with pupae and moths. The identification of FKBP45 and the chitinase-like protein EN03 as two proteins solely expressed at the larval stage indicate these two proteins may be involved in the immunological functions of larvae. The myosin heavy chain was identified in the pupal wing disc, suggesting its involvement in the formation of wing muscle. Some proteins, such as proteasome alpha 3 subunits and ribosomal proteins, specifically identified from the moth stage may be involved in the degradation of old cuticle proteins and new cuticle protein synthesis. Gene ontology analysis of proteins specific to each of these three stages enabled their association with cellular component, molecular function, and biological process categories. The analysis of similarities and differences in these identified proteins will greatly further our understanding of wing disc development in silkworm and other insects.
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Affiliation(s)
- Yi-ling Zhang
- School of Biology and Basic Medical Sciences, Soochow University, No.199 Ren'ai Road, Dushu Lake Higher Education Town, Suzhou Industrial Park, Suzhou, 215123, People's Republic of China
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Shotgun proteomic analysis on the diapause and non-diapause eggs of domesticated silkworm Bombyx mori. PLoS One 2013; 8:e60386. [PMID: 23580252 PMCID: PMC3620277 DOI: 10.1371/journal.pone.0060386] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2012] [Accepted: 02/27/2013] [Indexed: 12/31/2022] Open
Abstract
To clarify the molecular mechanisms of silkworm diapause, it is necessary to investigate the molecular basis at protein level. Here, the spectra of peptides digested from silkworm diapause and non-diapause eggs were obtained from liquid chromatography tandem mass spectrometry (LC-MS/MS) and were analyzed by bioinformatics methods. A total of 501 and 562 proteins were identified from the diapause and non-diapause eggs respectively, of which 309 proteins were shared commonly. Among these common-expressed proteins, three main storage proteins (vitellogenin precursor, egg-specific protein and low molecular lipoprotein 30 K precursor), nine heat shock proteins (HSP19.9, 20.1, 20.4, 20.8, 21.4, 23.7, 70, 90-kDa heat shock protein and heat shock cognate protein), 37 metabolic enzymes, 22 ribosomal proteins were identified. There were 192 and 253 unique proteins identified in the diapause and non-diapause eggs respectively, of which 24 and 48 had functional annotations, these unique proteins indicated that the metabolism, translation of the mRNA and synthesis of proteins were potentially more highly represented in the non-dipause eggs than that in the diapause eggs. The relative mRNA levels of four identified proteins in the two kinds of eggs were also compared using quantitative reverse transcription PCR (qRT-PCR) and showed some inconsistencies with protein expression. GO signatures of 486 out of the 502 and 545 out of the 562 proteins identified in the diapause and non-diapause eggs respectively were available. In addition, Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis showed the Metabolism, Translation and Transcription pathway were potentially more active in the non-dipause eggs at this stage.
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12
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Wu T, Zhang Z, Yuan Z, Lo LJ, Chen J, Wang Y, Peng J. Distinctive genes determine different intramuscular fat and muscle fiber ratios of the longissimus dorsi muscles in Jinhua and landrace pigs. PLoS One 2013; 8:e53181. [PMID: 23301040 PMCID: PMC3536781 DOI: 10.1371/journal.pone.0053181] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2012] [Accepted: 11/26/2012] [Indexed: 02/04/2023] Open
Abstract
Meat quality is determined by properties such as carcass color, tenderness and drip loss. These properties are closely associated with meat composition, which includes the types of muscle fiber and content of intramuscular fat (IMF). Muscle fibers are the main contributors to meat mass, while IMF not only contributes to the sensory properties but also to the plethora of physical, chemical and technological properties of meat. However, little is known about the molecular mechanisms that determine meat composition in different pig breeds. In this report we show that Jinhua pigs, a Chinese breed, contains much higher levels of IMF than do Landrace pigs, a Danish breed. We analyzed global gene expression profiles in the longissimus dorsi muscles in Jinhua and Landrace breeds at the ages of 30, 90 and 150 days. Cross-comparison analysis revealed that genes that regulate fatty acid biosynthesis (e.g., fatty acid synthase and stearoyl-CoA desaturase) are expressed at higher levels in Jinhua pigs whereas those that regulate myogenesis (e.g., myogenic factor 6 and forkhead box O1) are expressed at higher levels in Landrace pigs. Among those genes which are highly expressed in Jinhua pigs at 90 days (d90), we identified a novel gene porcine FLJ36031 (pFLJ), which functions as a positive regulator of fat deposition in cultured intramuscular adipocytes. In summary, our data showed that the up-regulation of fatty acid biosynthesis regulatory genes such as pFLJ and myogenesis inhibitory genes such as myostatin in the longissimus dorsi muscles of Jinhua pigs could explain why this local breed produces meat with high levels of IMF.
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Affiliation(s)
- Ting Wu
- Key Laboratory for Molecular Animal Nutrition, Ministry of Education, College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Zhenhai Zhang
- Department of Biochemistry and Molecular Biophysics, Columbia University, New York, New York, United States of America
| | - Zhangqin Yuan
- Key Laboratory for Molecular Animal Nutrition, Ministry of Education, College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Li Jan Lo
- Key Laboratory for Molecular Animal Nutrition, Ministry of Education, College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Jun Chen
- College of Life Sciences, Zhejiang University, Hangzhou, China
| | - Yizhen Wang
- Key Laboratory for Molecular Animal Nutrition, Ministry of Education, College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Jinrong Peng
- Key Laboratory for Molecular Animal Nutrition, Ministry of Education, College of Animal Sciences, Zhejiang University, Hangzhou, China
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Anand P, Cermelli S, Li Z, Kassan A, Bosch M, Sigua R, Huang L, Ouellette AJ, Pol A, Welte MA, Gross SP. A novel role for lipid droplets in the organismal antibacterial response. eLife 2012; 1:e00003. [PMID: 23150794 PMCID: PMC3491588 DOI: 10.7554/elife.00003] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2012] [Accepted: 09/05/2012] [Indexed: 01/19/2023] Open
Abstract
We previously discovered histones bound to cytosolic lipid droplets (LDs); here we show that this forms a cellular antibacterial defense system. Sequestered on droplets under normal conditions, in the presence of bacterial lipopolysaccharide (LPS) or lipoteichoic acid (LTA), histones are released from the droplets and kill bacteria efficiently in vitro. Droplet-bound histones also function in vivo: when injected into Drosophila embryos lacking droplet-bound histones, bacteria grow rapidly. In contrast, bacteria injected into embryos with droplet-bound histones die. Embryos with droplet-bound histones displayed more than a fourfold survival advantage when challenged with four different bacterial species. Our data suggests that this intracellular antibacterial defense system may function in adult flies, and also potentially in mice.DOI:http://dx.doi.org/10.7554/eLife.00003.001.
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Affiliation(s)
- Preetha Anand
- Department of Developmental and Cell Biology, University of California Irvine, Irvine, United States
| | - Silvia Cermelli
- Department of Developmental and Cell Biology, University of California Irvine, Irvine, United States
| | - Zhihuan Li
- Department of Biology, University of Rochester, Rochester, United States
| | - Adam Kassan
- Equip de Proliferació i Senyalització Cel.lular, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Marta Bosch
- Equip de Proliferació i Senyalització Cel.lular, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Robilyn Sigua
- Department of Developmental and Cell Biology, University of California Irvine, Irvine, United States
| | - Lan Huang
- Department of Developmental and Cell Biology, University of California Irvine, Irvine, United States
- Department of Physiology and Biophysics, University of California Irvine, Irvine, United States
| | - Andre J Ouellette
- Department of Pathology and Laboratory Medicine, Keck School of Medicine, University of Southern California, Los Angeles, United States
| | - Albert Pol
- Equip de Proliferació i Senyalització Cel.lular, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
- Institució Catalana de Recerca i Estudis Avançats, Barcelona, Spain
| | - Michael A Welte
- Department of Biology, University of Rochester, Rochester, United States
| | - Steven P Gross
- Department of Developmental and Cell Biology, University of California Irvine, Irvine, United States
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Hu X, Chen L, Xiang X, Yang R, Yu S, Wu X. Proteomic analysis of peritrophic membrane (PM) from the midgut of fifth-instar larvae, Bombyx mori. Mol Biol Rep 2011; 39:3427-34. [PMID: 21725639 DOI: 10.1007/s11033-011-1114-6] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2011] [Accepted: 06/17/2011] [Indexed: 02/03/2023]
Abstract
The insect peritrophic membrane (PM), separating midgut epithelium and intestinal contents, is protective lining for the epithelium and plays the important role in absorption of nutrients, and also is the first barrier to the pathogens ingested through oral feeding. In order to understand the biological function of silkworm larval PM, shotgun liquid chromatography tandem mass spectrometry (LC-MS/MS) approach was applied to investigate its protein composition. Total 47 proteins were identified, of which 51.1% of the proteins had the isoelectric point (pI) within the range of 5-7, and 53.2% had molecular weights within the range 15-45 kDa. Most of them were found to be closely related to larval nutrients metabolism and innate immunity. Furthermore, these identified proteins were annotated according to Gene Ontology Annotation in terms of molecular function, biological process and cell localization. Most of the proteins had catalytic activity, binding activity and transport function. The knowledge obtained from this study will favour us to well understand the role of larval PM in larval physiological activities, and also help us to find the potential target and design better biopesticides to control pest, particularly the Lepidoptera insect.
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Affiliation(s)
- Xiaolong Hu
- College of Animal Science, Zhejiang University, Hangzhou, 310029, China
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