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Cao HH, Kong WW, Ling B, Wang ZY, Zhang Y, Guo ZX, Liu SH, Xu JP. Bmo-miR-3351 modulates glutathione content and inhibits BmNPV proliferation by targeting BmGSTe6 in Bombyx mori. INSECT SCIENCE 2024. [PMID: 38258370 DOI: 10.1111/1744-7917.13318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 11/23/2023] [Accepted: 12/10/2023] [Indexed: 01/24/2024]
Abstract
MicroRNAs (miRNAs) are small non-coding RNAs that play pivotal roles in the host response to invading pathogens. Among these pathogens, Bombyx mori nucleopolyhedrovirus (BmNPV) is one of the main causes of substantial economic losses in sericulture, and there are relatively few studies on the specific functions of miRNAs in the B. mori-BmNPV interaction. Therefore, we conducted transcriptome sequencing to identify differentially expressed (DE) messenger RNAs (mRNAs) and miRNAs in the midgut of 2 B. mori strains (BmNPV-susceptible strain P50 and BmNPV-resistant strain A35) after BmNPV infection. Through correlation analysis of the miRNA and mRNA data, we identified a comprehensive set of 21 miRNAs and 37 predicted target mRNAs. Notably, miR-3351, which has high expression in A35, exhibited remarkable efficacy in suppressing BmNPV proliferation. Additionally, we confirmed that miR-3351 binds to the 3' untranslated region (3' UTR) of B. mori glutathione S-transferase epsilon 6 (BmGSTe6), resulting in its downregulation. Conversely, BmGSTe6 displayed an opposite expression pattern to miR-3351, effectively promoting BmNPV proliferation. Notably, BmGSTe6 levels were positively correlated with glutathione S-transferase activity, consequently influencing intracellular glutathione content in the infected samples. Furthermore, our investigation revealed the protective role of glutathione against BmNPV infection in BmN cells. In summary, miR-3351 modulates glutathione content by downregulating BmGSTe6 to inhibit BmNPV proliferation in B. mori. Our findings enriched the research on the role of B. mori miRNAs in the defense against BmNPV infection, and suggests that the antiviral molecule, glutathione, offers a novel perspective on preventing viral infection in sericulture.
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Affiliation(s)
- Hui-Hua Cao
- Anhui Key Laboratory of Resource Insect Biology and Innovative Utilization, School of Life Sciences, Anhui Agricultural University, Hefei, China
- Anhui International Joint Research and Developmental Center of Sericulture Resources Utilization, Hefei, China
| | - Wei-Wei Kong
- Anhui Key Laboratory of Resource Insect Biology and Innovative Utilization, School of Life Sciences, Anhui Agricultural University, Hefei, China
- Anhui International Joint Research and Developmental Center of Sericulture Resources Utilization, Hefei, China
| | - Bing Ling
- Anhui Key Laboratory of Resource Insect Biology and Innovative Utilization, School of Life Sciences, Anhui Agricultural University, Hefei, China
- Anhui International Joint Research and Developmental Center of Sericulture Resources Utilization, Hefei, China
| | - Zhi-Yi Wang
- Anhui Key Laboratory of Resource Insect Biology and Innovative Utilization, School of Life Sciences, Anhui Agricultural University, Hefei, China
- Anhui International Joint Research and Developmental Center of Sericulture Resources Utilization, Hefei, China
| | - Ying Zhang
- Anhui Key Laboratory of Resource Insect Biology and Innovative Utilization, School of Life Sciences, Anhui Agricultural University, Hefei, China
- Anhui International Joint Research and Developmental Center of Sericulture Resources Utilization, Hefei, China
| | - Zhe-Xiao Guo
- Anhui Key Laboratory of Resource Insect Biology and Innovative Utilization, School of Life Sciences, Anhui Agricultural University, Hefei, China
- Anhui International Joint Research and Developmental Center of Sericulture Resources Utilization, Hefei, China
| | - Shi-Huo Liu
- Anhui Key Laboratory of Resource Insect Biology and Innovative Utilization, School of Life Sciences, Anhui Agricultural University, Hefei, China
- Anhui International Joint Research and Developmental Center of Sericulture Resources Utilization, Hefei, China
| | - Jia-Ping Xu
- Anhui Key Laboratory of Resource Insect Biology and Innovative Utilization, School of Life Sciences, Anhui Agricultural University, Hefei, China
- Anhui International Joint Research and Developmental Center of Sericulture Resources Utilization, Hefei, China
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Ren Y, Wang Y, Chen J, Fu S, Bu W, Xue H. Integrated analysis of miRNA profiles and gut bacterial changes in Altica viridicyanea following antibiotic treatment. Ecol Evol 2023; 13:e10660. [PMID: 37915809 PMCID: PMC10616750 DOI: 10.1002/ece3.10660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 09/29/2023] [Accepted: 10/12/2023] [Indexed: 11/03/2023] Open
Abstract
The gut bacteria involves in insect homeostasis by playing essential roles in host physiology, metabolism, innate immunity, and so forth. microRNAs (miRNAs) are endogenous small noncoding RNAs that posttranscriptionally regulate gene expression to affect immune or metabolic processes in insects. For several non-model insects, the available knowledge on the relationship between changes in the gut bacteria and miRNA profiles is limited. In this study, we investigated the gut bacterial diversity, composition, and function from Altica viridicyanea feeding on normal- and antibiotic-treated host plants using 16S rRNA amplicon sequencing; antibiotics have been shown to affect the body weight and development time in A. viridicyanea, suggesting that the gut bacteria of the normal sample were more diverse and abundant than those of the antibiotic-fed group, and most of them were involved in various physical functions by enrichment analysis. Furthermore, we executed small RNA transcriptome sequencing using the two experimental groups to obtain numerous sRNAs, such as piRNAs, siRNAs, and known and novel miRNAs, by data mapping and quality control, and furthermore, a total of 224 miRNAs were identified as significantly differentially expressed miRNAs, of which some DEMs and their target genes participated in immune- and metabolism-related pathways based on GO and KEGG annotation. Besides, regarding the regulatory roles of miRNA and target genes, a interaction network of DEM-target gene pairs from eight immune- or metabolism-related signaling pathways were constructed. Finally, we discovered that DEMs from above pathways were significantly positively or negatively correlated with gut bacterial alterations following antibiotic treatment. Collectively, the observations of this study expand our understanding of how the disturbance of gut bacteria affects miRNA profiles in A. viridicyanea and provide new valuable resources from extreme ranges for future studies on the adaptive evolution in insects.
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Affiliation(s)
- Yipeng Ren
- Institute of Entomology, College of Life SciencesNankai UniversityTianjinChina
| | - Yuan Wang
- Institute of Entomology, College of Life SciencesNankai UniversityTianjinChina
| | - Juhong Chen
- Institute of Entomology, College of Life SciencesNankai UniversityTianjinChina
| | - Siying Fu
- Institute of Entomology, College of Life SciencesNankai UniversityTianjinChina
| | - Wenjun Bu
- Institute of Entomology, College of Life SciencesNankai UniversityTianjinChina
| | - Huaijun Xue
- Institute of Entomology, College of Life SciencesNankai UniversityTianjinChina
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Mahanta DK, Bhoi TK, Komal J, Samal I, Nikhil RM, Paschapur AU, Singh G, Kumar PVD, Desai HR, Ahmad MA, Singh PP, Majhi PK, Mukherjee U, Singh P, Saini V, Shahanaz, Srinivasa N, Yele Y. Insect-pathogen crosstalk and the cellular-molecular mechanisms of insect immunity: uncovering the underlying signaling pathways and immune regulatory function of non-coding RNAs. Front Immunol 2023; 14:1169152. [PMID: 37691928 PMCID: PMC10491481 DOI: 10.3389/fimmu.2023.1169152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Accepted: 08/07/2023] [Indexed: 09/12/2023] Open
Abstract
Multicellular organisms are constantly subjected to pathogens that might be harmful. Although insects lack an adaptive immune system, they possess highly effective anti-infective mechanisms. Bacterial phagocytosis and parasite encapsulation are some forms of cellular responses. Insects often defend themselves against infections through a humoral response. This phenomenon includes the secretion of antimicrobial peptides into the hemolymph. Specific receptors for detecting infection are required for the recognition of foreign pathogens such as the proteins that recognize glucans and peptidoglycans, together referred to as PGRPs and βGRPs. Activation of these receptors leads to the stimulation of signaling pathways which further activates the genes encoding for antimicrobial peptides. Some instances of such pathways are the JAK-STAT, Imd, and Toll. The host immune response that frequently accompanies infections has, however, been circumvented by diseases, which may have assisted insects evolve their own complicated immune systems. The role of ncRNAs in insect immunology has been discussed in several notable studies and reviews. This paper examines the most recent research on the immune regulatory function of ncRNAs during insect-pathogen crosstalk, including insect- and pathogen-encoded miRNAs and lncRNAs, and provides an overview of the important insect signaling pathways and effector mechanisms activated by diverse pathogen invaders.
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Affiliation(s)
- Deepak Kumar Mahanta
- Department of Entomology, Dr. Rajendra Prasad Central Agricultural University, Samastipur, Bihar, India
| | - Tanmaya Kumar Bhoi
- Forest Protection Division, Indian Council of Forestry Research and Education (ICFRE) - Arid Forest Research Institute (ICFRE-AFRI), Jodhpur, Rajasthan, India
| | - J. Komal
- Department of Entomology, Navsari Agricultural University, Navsari, Gujarat, India
| | - Ipsita Samal
- ICAR-National Research Centre on Litchi, Mushahari, Ramna, Muzaffarpur, Bihar, India
| | - R. M. Nikhil
- Division of Entomology, Indian Agricultural Research Institute, New Delhi, India
| | - Amit Umesh Paschapur
- Crop Protection Division, Indian Council of Agricultural Research (ICAR)-Vivekananda Parvatiya Krishi Anusandhan Sansthan, Almora, Uttarakhand, India
| | - Gaurav Singh
- The Directorate of Research, Maharana Pratap Horticultural University, Karnal, Haryana, India
| | - P. V. Dinesh Kumar
- Department of Plant Pathology University of Agricultural Sciences, Bengaluru, Karnataka, India
| | - H. R. Desai
- Department of Entomology, Main Cotton Research Station, Navsari Agricultural University, Gujarat, India
| | - Mohammad Abbas Ahmad
- Department of Entomology, Dr. Rajendra Prasad Central Agricultural University, Samastipur, Bihar, India
| | - P. P. Singh
- Department of Entomology, Tirhut College of Agriculture, Dr. Rajendra Prasad Central Agricultural University, Samastipur, Bihar, India
| | - Prasanta Kumar Majhi
- Department of Plant Breeding and Genetics, Odisha University of Agriculture and Technology, Bhubaneswar, Odisha, India
| | - U. Mukherjee
- Department of Entomology, Dr. Rajendra Prasad Central Agricultural University, Samastipur, Bihar, India
| | - Pushpa Singh
- Department of Entomology, Dr. Rajendra Prasad Central Agricultural University, Samastipur, Bihar, India
| | - Varun Saini
- Department of Entomology, Chaudhary Charan Singh Haryana Agricultural University, Hisar, Haryana, India
| | - Shahanaz
- Department of Entomology, College of Horticulture Mojerla, Sri Konda Laxman Telengana State Horticultural University, Wanaparthy, Telengana, India
| | - N. Srinivasa
- Department of Entomology and Agricultural Zoology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Yogesh Yele
- School of Crop Health Management Research, Council of Agricultural Research-National Institute of Biotic Stress Management (ICAR)- National Institute of Biotic Stress Management, Raipur, India
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Abbas MN, Kausar S, Gul I, Li J, Yu H, Dong M, Cui H. The Potential Biological Roles of Circular RNAs in the Immune Systems of Insects to Pathogen Invasion. Genes (Basel) 2023; 14:genes14040895. [PMID: 37107653 PMCID: PMC10137924 DOI: 10.3390/genes14040895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 04/08/2023] [Accepted: 04/10/2023] [Indexed: 04/29/2023] Open
Abstract
Circular RNAs (circRNAs) are a newly discovered class of endogenously expressed non-coding RNAs (ncRNAs). They are highly stable, covalently closed molecules that frequently exhibit tissue-specific expression in eukaryotes. A small number of circRNAs are abundant and have been remarkably conserved throughout evolution. Numerous circRNAs are known to play important biological roles by acting as microRNAs (miRNAs) or protein inhibitors ('sponges'), by regulating the function of proteins, or by being translated themselves. CircRNAs have distinct cellular functions due to structural and production differences from mRNAs. Recent advances highlight the importance of characterizing circRNAs and their targets in a variety of insect species in order to fully understand how they contribute to the immune responses of these insects. Here, we focus on the recent advances in our understanding of the biogenesis of circRNAs, regulation of their abundance, and biological roles, such as serving as templates for translation and in the regulation of signaling pathways. We also discuss the emerging roles of circRNAs in regulating immune responses to various microbial pathogens. Furthermore, we describe the functions of circRNAs encoded by microbial pathogens that play in their hosts.
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Affiliation(s)
- Muhammad Nadeem Abbas
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400716, China
- Cancer Center, Medical Research Institute, Southwest University, Chongqing 400716, China
| | - Saima Kausar
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400716, China
- Cancer Center, Medical Research Institute, Southwest University, Chongqing 400716, China
| | - Isma Gul
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400716, China
- Cancer Center, Medical Research Institute, Southwest University, Chongqing 400716, China
| | - Jisheng Li
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400716, China
- Cancer Center, Medical Research Institute, Southwest University, Chongqing 400716, China
| | - Huijuan Yu
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400716, China
- Cancer Center, Medical Research Institute, Southwest University, Chongqing 400716, China
| | - Mengyao Dong
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400716, China
- Cancer Center, Medical Research Institute, Southwest University, Chongqing 400716, China
| | - Hongjuan Cui
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400716, China
- Cancer Center, Medical Research Institute, Southwest University, Chongqing 400716, China
- Jinfeng Laboratory, Chongqing 401329, China
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5
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Jia Q, Fu Y. microRNA-34-5p encoded by Spodoptera frugiperda regulates the replication and infection of Autographa californica multiple nucleopolyhedrovirus by targeting odv-e66, ac78 and ie2. PEST MANAGEMENT SCIENCE 2022; 78:5379-5389. [PMID: 36057111 DOI: 10.1002/ps.7160] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 08/12/2022] [Accepted: 09/03/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Spodoptera frugiperda is one of the significant migratory pests in the Global Alert issued by the Food and Agriculture Organization of the United Nations. As an insect-specific microbial insecticide, baculovirus has been used to control various pests. MicroRNA-34-5p (miR-34-5p) is involved in regulating growth, reproduction and innate immunity to pathogens in insects, playing an essential role in host-virus interactions. In this study, we explored the critical function of miR-34-5p encoded by S. frugiperda in the anti-Autographa californica multiple nucleopolyhedrovirus (AcMNPV), providing a reference for the design of a miR-34-5p target biopesticide against S. frugiperda and a theoretical basis for the wide application of microRNAs (miRNAs) in green pest control technology. RESULTS We focused on miR-34-5p identified as downregulated in Sf9 cells and S. frugiperda larvae infected by AcMNPV. The regulatory function of miR-34-5p in AcMNPV-S. frugiperda interactions was studied by transfecting synthetic mimics and inhibitors, and constructing recombinant bacmids with miR-34-5p overexpression. miR-34-5p inhibited the production of infectious budded virions at the cellular and insect levels, inhibited the replication of the viral DNA and glucose metabolism, and increased the transcription of the antimicrobial peptide gloverin. Furthermore, the virus genes odv-e66, ac78 and ie2 were shown to be direct targets. CONCLUSION We systematically revealed the mechanism by which miR-34-5p is involved in the insect antiviral process. miR-34-5p inhibited the replication and infection of AcMNPV by directly targeting AcMNPV genes, especially ac78 and ie2. Our study provides a new direction and thinking for the prevention and green control of lepidopteran pests. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Qiaojin Jia
- Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Institute of Biotechnology, Shanxi University, Taiyuan, People's Republic of China
- Department of Medical Laboratory Science, Fenyang College, Shanxi Medical University, Fenyang, People's Republic of China
| | - Yuejun Fu
- Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Institute of Biotechnology, Shanxi University, Taiyuan, People's Republic of China
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6
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Zhao Z, Lin S, Wu W, Zhang Z, Wu P, Shen M, Qian H, Guo X. A cypovirus encoded microRNA negatively regulates the NF-κB pathway to enhance viral multiplication in Silkworm, Bombyx mori. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2022; 131:104382. [PMID: 35245604 DOI: 10.1016/j.dci.2022.104382] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 02/25/2022] [Accepted: 02/27/2022] [Indexed: 06/14/2023]
Abstract
MicroRNAs (miRNAs) are small non-coding RNAs that function as novel gene expression regulators at the post-transcriptional level. Not with standing that the biogenesis and function of miRNAs are well-understood in eukaryotes, little is known about RNA virus-encoded miRNAs. Bombyx mori cypovirus (BmCPV) is a double-stranded RNA virus with a segmented genome that causes cytoplasmic polyhedrosis disease in silkworm larvae. To date, the interaction between BmCPV and silkworm remains largely unclear. 22 candidate BmCPV-encoded miRNAs were identified in this study through small RNA sequencing, stem-loop RT-PCR and qRT-PCR. Then, generation and function analyses were conducted on one of the candidate miRNAs, BmCPV-miR-1, in the BmN cells and the silkworm larvae by RNA interference, quantitative PCR, dual-luciferase assay. Our results revealed that BmCPV-miR-1 was encoded by BmCPV genome RNA rather than the degraded fragments of the viral genome. Its generation depended on Dicer-1 and might also be correlated with Dicer-2, Argonaute-1 and Argonaute-2. Moreover, BmCPV-miR-1 could suppress the expression of the target gene, B. mori inhibitor of nuclear factor kappa-B kinase subunit beta (BmIKKβ), via binding to the target mRNA 3'-untranslated region, which fine-tuned the host NF-κB signaling pathway and consequently enhanced viral replication. Our results provide new evidence supporting the hypothesis that RNA viruses could generate miRNAs to modulate antiviral host defense.
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Affiliation(s)
- Ze Zhao
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, 212000, China; Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, 212000, China
| | - Su Lin
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, 212000, China; Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, 212000, China
| | - Wanming Wu
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, 212000, China; Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, 212000, China
| | - Zhendong Zhang
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, 212000, China; Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, 212000, China
| | - Ping Wu
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, 212000, China; Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, 212000, China
| | - Manman Shen
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, 212000, China; Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, 212000, China
| | - Heying Qian
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, 212000, China; Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, 212000, China
| | - Xijie Guo
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, 212000, China; Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, 212000, China.
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Moure UAE, Tan T, Sha L, Lu X, Shao Z, Yang G, Wang Y, Cui H. Advances in the Immune Regulatory Role of Non-Coding RNAs (miRNAs and lncRNAs) in Insect-Pathogen Interactions. Front Immunol 2022; 13:856457. [PMID: 35464405 PMCID: PMC9020863 DOI: 10.3389/fimmu.2022.856457] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Accepted: 03/10/2022] [Indexed: 11/30/2022] Open
Abstract
Insects are by far the most abundant and diverse living organisms on earth and are frequently prone to microbial attacks. In other to counteract and overcome microbial invasions, insects have in an evolutionary way conserved and developed immune defense mechanisms such as Toll, immune deficiency (Imd), and JAK/STAT signaling pathways leading to the expression of antimicrobial peptides. These pathways have accessory immune effector mechanisms, such as phagocytosis, encapsulation, melanization, nodulation, RNA interference (RNAi), lysis, autophagy, and apoptosis. However, pathogens evolved strategies that circumvent host immune response following infections, which may have helped insects further sophisticate their immune response mechanisms. The involvement of ncRNAs in insect immunity is undeniable, and several excellent studies or reviews have investigated and described their roles in various insects. However, the functional analyses of ncRNAs in insects upon pathogen attacks are not exhaustive as novel ncRNAs are being increasingly discovered in those organisms. This article gives an overview of the main insect signaling pathways and effector mechanisms activated by pathogen invaders and summarizes the latest findings of the immune modulation role of both insect- and pathogen-encoded ncRNAs, especially miRNAs and lncRNAs during insect–pathogen crosstalk.
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Affiliation(s)
- Ulrich Aymard Ekomi Moure
- Affiliated Hospital of Southwest University, the Ninth People's Hospital of Chongqing, Chongqing, China.,Medical Research Institute, Southwest University, Chongqing, China
| | - Tingshan Tan
- Affiliated Hospital of Southwest University, the Ninth People's Hospital of Chongqing, Chongqing, China
| | - Lin Sha
- Affiliated Hospital of Southwest University, the Ninth People's Hospital of Chongqing, Chongqing, China
| | - Xiaoqin Lu
- Affiliated Hospital of Southwest University, the Ninth People's Hospital of Chongqing, Chongqing, China
| | - Zhi Shao
- Affiliated Hospital of Southwest University, the Ninth People's Hospital of Chongqing, Chongqing, China
| | - Guang Yang
- Affiliated Hospital of Southwest University, the Ninth People's Hospital of Chongqing, Chongqing, China
| | - Yi Wang
- Affiliated Hospital of Southwest University, the Ninth People's Hospital of Chongqing, Chongqing, China.,Department of Gastrointestinal Surgery, the Ninth People's Hospital of Chongqing, Chongqing, China
| | - Hongjuan Cui
- Medical Research Institute, Southwest University, Chongqing, China.,State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture, Southwest University, Chongqing, China
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8
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Kuang W, Yan C, Zhan Z, Guan L, Wang J, Chen J, Li J, Ma G, Zhou X, Jin L. Transcriptional responses of Daphnis nerii larval midgut to oral infection by Daphnis nerii cypovirus-23. Virol J 2021; 18:250. [PMID: 34906167 PMCID: PMC8670114 DOI: 10.1186/s12985-021-01721-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Accepted: 12/01/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Daphnis nerii cypovirus-23 (DnCPV-23) is a new type of cypovirus and has a lethal effect on the oleander hawk moth, Daphnis nerii which feeds on leave of Oleander and Catharanthus et al. After DnCPV-23 infection, the change of Daphnis nerii responses has not been reported. METHODS To better understand the pathogenic mechanism of DnCPV-23 infection, 3rd-instar Daphnis nerii larvae were orally infected with DnCPV-23 occlusion bodies and the transcriptional responses of the Daphnis nerii midgut were analyzed 72 h post-infection using RNA-seq. RESULTS The results showed that 1979 differentially expressed Daphnis nerii transcripts in the infected midgut had been identified. KEGG analysis showed that protein digestion and absorption, Toll and Imd signaling pathway were down-regulated. Based on the result, we speculated that food digestion and absorption in insect midgut might be impaired after virus infection. In addition, the down-regulation of the immune response may make D. nerii more susceptible to bacterial infections. Glycerophospholipid metabolism and xenobiotics metabolism were up-regulated. These two types of pathways may affect the viral replication and xenobiotic detoxification of insect, respectively. CONCLUSION These results may facilitate a better understanding of the changes in Daphnis nerii metabolism during cypovirus infection and serve as a basis for future research on the molecular mechanism of DnCPV-23 invasion.
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Affiliation(s)
- Wendong Kuang
- Institute of Microbiology, Jiangxi Academy of Sciences, No. 7777 Changdong Road, Nanchang, 330096 China
| | - Chenghua Yan
- School of Life Sciences, Jiangxi University of Traditional Chinese Medicine, Nanchang, 330004 China
| | - Zhigao Zhan
- Institute of Microbiology, Jiangxi Academy of Sciences, No. 7777 Changdong Road, Nanchang, 330096 China
| | - Limei Guan
- Institute of Microbiology, Jiangxi Academy of Sciences, No. 7777 Changdong Road, Nanchang, 330096 China
| | - Jinchang Wang
- Institute of Microbiology, Jiangxi Academy of Sciences, No. 7777 Changdong Road, Nanchang, 330096 China
| | - Junhui Chen
- Institute of Microbiology, Jiangxi Academy of Sciences, No. 7777 Changdong Road, Nanchang, 330096 China
| | - Jianghuai Li
- Institute of Microbiology, Jiangxi Academy of Sciences, No. 7777 Changdong Road, Nanchang, 330096 China
| | - Guangqiang Ma
- School of Life Sciences, Jiangxi University of Traditional Chinese Medicine, Nanchang, 330004 China
| | - Xi Zhou
- Institute of Microbiology, Jiangxi Academy of Sciences, No. 7777 Changdong Road, Nanchang, 330096 China
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences (CAS), Wuhan, 430071 China
| | - Liang Jin
- Institute of Microbiology, Jiangxi Academy of Sciences, No. 7777 Changdong Road, Nanchang, 330096 China
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9
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Awais MM, Shakeel M, Sun J. MicroRNA-Mediated Host-Pathogen Interactions Between Bombyx mori and Viruses. Front Physiol 2021; 12:672205. [PMID: 34025458 PMCID: PMC8137832 DOI: 10.3389/fphys.2021.672205] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Accepted: 04/14/2021] [Indexed: 12/14/2022] Open
Abstract
MicroRNAs (miRNAs), small non-coding RNAs of about 22 nucleotides, have been reported to regulate gene expression at the posttranscriptional level and are involved in several biological processes such as immunity, development, metabolism, and host-pathogen interactions. Apart from miRNAs encoded by the host, miRNAs produced by pathogens also regulate host genes to facilitate virus replication and evasion of the host defense responses. In recent years, accumulated studies suggest that viral infections alter the host miRNAs expression profile, and both cellular and viral miRNAs may play vital roles in host-pathogen interactions. Bombyx mori, one of the critical lepidopteran model species, is an economically important insect for silk production. The mechanism of interaction between B. mori and its pathogens and their regulation by miRNAs has been extensively studied. Therefore, in this review, we aim to highlight the recent information and understanding of the virus-encoding miRNAs and their functions in modulating viral and host (B. mori) genes. Additionally, the response of B. mori derived miRNAs to viral infection is also discussed. A detailed critical view about miRNAs’ regulatory roles in B. mori-virus interactions will help us understand molecular networks and develop a sustainable antiviral strategy.
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Affiliation(s)
- Mian Muhammad Awais
- Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding and Sub-Tropical Sericulture and Mulberry Resources Protection and Safety Engineering Research Center, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Muhammad Shakeel
- Laboratory of Bio-Pesticide Innovation and Application of Guandong Province, College of Plant Protection, South China Agricultural University, Guangzhou, China
| | - Jingchen Sun
- Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding and Sub-Tropical Sericulture and Mulberry Resources Protection and Safety Engineering Research Center, College of Animal Science, South China Agricultural University, Guangzhou, China
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10
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Zhang Z, Zhao Z, Lin S, Wu W, Tang W, Dong Y, Shen M, Wu P, Guo X. Identification of long noncoding RNAs in silkworm larvae infected with Bombyx mori cypovirus. ARCHIVES OF INSECT BIOCHEMISTRY AND PHYSIOLOGY 2021; 106:1-12. [PMID: 33619747 DOI: 10.1002/arch.21777] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 01/31/2021] [Accepted: 02/03/2021] [Indexed: 06/12/2023]
Abstract
Bombyx mori cypovirus (BmCPV) is one of the most important pathogens causing severe disease to silkworm. Emerging evidence indicates that long noncoding RNAs (lncRNAs) play importantly regulatory roles in virus infection and host immune response. To better understand the interaction between silkworm, Bombyx mori and BmCPV, we performed a comparative transcriptome analysis on lncRNAs and mRNAs between the virus-infected and noninfected silkworm larvae midgut at two time points postinoculation. A total of 16,753 genes and 1845 candidate lncRNAs were identified, among which 356 messenger RNA (mRNAs) and 41 lncRNAs were differentially expressed (DE). Target gene prediction revealed that most of DEmRNAs (123) were coexpressed with 28 DElncRNAs, suggesting that the expression of mRNA is mainly affected through trans- regulation by BmCPV-induced lncRNAs, and a regulatory network of DElncRNAs and DEmRNAs was then constructed. According to the network, many genes involved in apoptosis, autophagy, and antiviral response, such as ATG3, PDCD6, IBP2, and MFB1, could be targeted by different DElncRNAs, implying the essential roles of these genes and lncRNAs in BmCPV infection. In all, our studies revealed for the first time the alteration of lncRNA expression in BmCPV-infected larvae and its potential influence on BmCPV replication, providing a new perspective for host-cypovirus interaction studies.
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Affiliation(s)
- Zhendong Zhang
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, China
- Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, Jiangsu, China
| | - Ze Zhao
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, China
- Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, Jiangsu, China
| | - Su Lin
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, China
- Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, Jiangsu, China
| | - Wanming Wu
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, China
- Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, Jiangsu, China
| | - Weiming Tang
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, China
- Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, Jiangsu, China
| | - Youfu Dong
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, China
- Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, Jiangsu, China
| | - Manman Shen
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, China
- Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, Jiangsu, China
| | - Ping Wu
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, China
- Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, Jiangsu, China
| | - Xijie Guo
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, China
- Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, Jiangsu, China
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11
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Jiang L. Insights Into the Antiviral Pathways of the Silkworm Bombyx mori. Front Immunol 2021; 12:639092. [PMID: 33643323 PMCID: PMC7904692 DOI: 10.3389/fimmu.2021.639092] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Accepted: 01/26/2021] [Indexed: 12/14/2022] Open
Abstract
The lepidopteran model silkworm, Bombyx mori, is an important economic insect. Viruses cause serious economic losses in sericulture; thus, the economic importance of these viruses heightens the need to understand the antiviral pathways of silkworm to develop antiviral strategies. Insect innate immunity pathways play a critical role in the outcome of infection. The RNA interference (RNAi), NF-kB-mediated, immune deficiency (Imd), and stimulator of interferon gene (STING) pathways, and Janus kinase/signal transducer and activator of transcription (JAK/STAT) pathway are the major antiviral defense mechanisms, and these have been shown to play important roles in the antiviral immunity of silkworms. In contrast, viruses can modulate the prophenol oxidase (PPO), phosphatidylinositol 3-kinase (PI3K)/protein kinase B (Akt), and the extracellular signal-regulated kinase (ERK) signaling pathways of the host to elevate their proliferation in silkworms. In this review, we present an overview of the current understanding of the main immune pathways in response to viruses and the signaling pathways modulated by viruses in silkworms. Elucidation of these pathways involved in the antiviral mechanism of silkworms furnishes a theoretical basis for the enhancement of virus resistance in economic insects, such as upregulating antiviral immune pathways through transgenic overexpression, RNAi of virus genes, and targeting these virus-modulated pathways by gene editing or inhibitors.
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Affiliation(s)
- Liang Jiang
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, China
- Biological Science Research Center, Southwest University, Chongqing, China
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12
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13
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Zhang S, Shen M, Yin H, Huang H, Li T, Zhao W, Guo X, Wu P. Expression profile analysis of circular RNAs in BmN cells (Bombyx mori) upon BmNPV infection. ARCHIVES OF INSECT BIOCHEMISTRY AND PHYSIOLOGY 2020; 105:e21735. [PMID: 32881053 DOI: 10.1002/arch.21735] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Revised: 08/08/2020] [Accepted: 08/14/2020] [Indexed: 06/11/2023]
Abstract
The disease caused by Bombyx mori nucleopolyhedrovirus (BmNPV) has always been difficult to control, resulting in tremendous economic losses in the sericulture industry. Although much has been learned about the impact of noncoding RNAs on pathogenesis, the role of circular RNA (circRNA) in insect immunity remains unclear. To explore circRNA regulation involved in BmNPV infection, we used transcriptome analysis of BmN cells with or without BmNPV infection to generate circRNA data set. A total of 444 novel circRNAs were identified in BmN cells, with 198 pervasively distributed both in the control group and BmNPV-infection group. The host genes were enriched inMAPK signaling pathway, dorso-ventral axis formation, and ECM-receptor interaction, which were required for the normal larval growth. A total of 75 circRNAs were differentially expressed (DE) on BmNPV infection. Six downregulated circRNAs were validated by Sanger sequencing and qRT-PCR. DEcircRNA-miRNA-DEmRNA network was constructed based on the six validated circRNAs. Pathway analysis indicated that the predicted target genes were mainly enriched in the metabolic pathway and immune-related signaling pathway. Our results may provide a basis for further studies on circRNA function in BmN cells challenged by BmNPV infection and offer an insight into the molecular mechanism on silkworm-virus interaction.
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Affiliation(s)
- Shaolun Zhang
- Jiangsu Key Laboratory of Sericultural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, China
| | - Manman Shen
- Jiangsu Key Laboratory of Sericultural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, China
- Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture and Rural Affairs, Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, Jiangsu, China
| | - Haotong Yin
- Jiangsu Key Laboratory of Sericultural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, China
| | - Haoling Huang
- Jiangsu Key Laboratory of Sericultural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, China
| | - Tao Li
- Jiangsu Key Laboratory of Sericultural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, China
| | - Weiguo Zhao
- Jiangsu Key Laboratory of Sericultural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, China
- Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture and Rural Affairs, Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, Jiangsu, China
| | - Xijie Guo
- Jiangsu Key Laboratory of Sericultural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, China
- Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture and Rural Affairs, Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, Jiangsu, China
| | - Ping Wu
- Jiangsu Key Laboratory of Sericultural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, China
- Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture and Rural Affairs, Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, Jiangsu, China
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14
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Yin H, Shang Q, Zhang S, Shen M, Huang H, Zhao W, Xijie G, Wu P. Comprehensive analysis of lncRNA-mRNA regulatory network in BmNPV infected cells treated with Hsp90 inhibitor. Mol Immunol 2020; 127:230-237. [PMID: 33022580 DOI: 10.1016/j.molimm.2020.09.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 09/16/2020] [Accepted: 09/21/2020] [Indexed: 11/16/2022]
Abstract
Bombyx mori nucleopolyhedrovirus (BmNPV) is one of the main pathogens that seriously affect the sustainable development of sericulture industry. Inhibition of Hsp90 by Hsp90 inhibitor, geldanamycin (GA) significantly suppresses BmNPV proliferation in Bombyx mori, while the functional mechanism is not clear. LncRNA has been widely reported to play an important role in immune responses and host-virus interactions in mammalian. However, related research has been rarely reported on silkworm. In this study, firstly, we confirmed the decrease of BmNPV ORF75 protein in the BmNPV-infected BmN cells treated with GA. Next, by using a genome-wide transcriptome analysis, we compared the lncRNA and mRNA expression profiles in BmNPV infected BmN cells treated with or without GA and identified a total of 282 differentially expressed lncRNAs (DElncRNAs) and 523 DEmRNAs. KEGG pathway analysis revealed DEmRNA were mainly involved in ubiquitin mediated proteolysis, spliceosome, RNA transport and oxidative phosphorylation. Further, we selected 27 immune-related DEmRNAs, which displayed the similar changes of expression patterns on both protein level and transcript level to construct DElncRNA-DEmRNA network. In addition, based on the DElncRNA-bmo-miR-278-3p-BmHSC70 regulatory network, we explored the potential function of several lncRNAs as sponges to inhibit the regulatory effect of bmo-278-3p on Bombyx mori heat shock protein cognate 70 (BmHSC70). Our finding suggests that lncRNAs play a role in the regulation of BmNPV proliferation by Hsp90.
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Affiliation(s)
- Haotong Yin
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212018, China
| | - Qi Shang
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212018, China
| | - Shaolun Zhang
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212018, China
| | - Manman Shen
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212018, China
| | - Haoling Huang
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212018, China
| | - Weiguo Zhao
- Jiangsu Key Laboratory of Sericutural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212018, China; Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture and Rural Affairs, Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, Jiangsu 212018, China
| | - Guo Xijie
- Jiangsu Key Laboratory of Sericutural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212018, China; Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture and Rural Affairs, Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, Jiangsu 212018, China
| | - Ping Wu
- Jiangsu Key Laboratory of Sericutural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212018, China; Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture and Rural Affairs, Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, Jiangsu 212018, China.
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15
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Guo JY, Wang YS, Chen T, Jiang XX, Wu P, Geng T, Pan ZH, Shang MK, Hou CX, Gao K, Guo XJ. Functional analysis of a miRNA-like small RNA derived from Bombyx mori cytoplasmic polyhedrosis virus. INSECT SCIENCE 2020; 27:449-462. [PMID: 30869181 DOI: 10.1111/1744-7917.12671] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 01/14/2019] [Accepted: 01/29/2019] [Indexed: 06/09/2023]
Abstract
Bombyx mori cytoplasmic polyhedrosis virus (BmCPV) is a major pathogen of the economic insect silkworm, Bombyx mori. Virus-encoded microRNAs (miRNAs) have been proven to play important roles in host-pathogen interactions. In this study we identified a BmCPV-derived miRNA-like 21 nt small RNA, BmCPV-miR-1, from the small RNA deep sequencing of BmCPV-infected silkworm larvae by stem-loop quantitative real-time PCR (qPCR) and investigated its functions with qPCR and lentiviral expression systems. Bombyx mori inhibitor of apoptosis protein (BmIAP) gene was predicted by both target prediction software miRanda and Targetscan to be one of its target genes with a binding site for BmCPV-miR-1 at the 5' untranslated region. It was found that the expression of BmCPV-miR-1 and its target gene BmIAP were both up-regulated in BmCPV-infected larvae. At the same time, it was confirmed that BmCPV-miR-1 could up-regulate the expression of BmIAP gene in HEK293T cells with lentiviral expression systems and in BmN cells by transfecting mimics. Furthermore, BmCPV-miR-1 mimics could up-regulate the expression level of BmIAP gene in midgut and fat body in the silkworm. In the midgut of BmCPV-infected larvae, BmCPV-miR-1 mimics could be further up-regulated and inhibitors could lower the virus-mediated expression of BmIAP gene. With the viral genomic RNA segments S1 and S10 as indicators, BmCPV-miR-1 mimics could up-regulate and inhibitors down-regulate their replication in the infected silkworm. These results implied that BmCPV-miR-1 could inhibit cell apoptosis in the infected silkworm through up-regulating BmIAP expression, providing the virus with a better cell circumstance for its replication.
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Affiliation(s)
- Jian-Yong Guo
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, China
- Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, China
| | - Yong-Sheng Wang
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, China
- Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, China
| | - Tian Chen
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, China
| | - Xiao-Xu Jiang
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, China
| | - Ping Wu
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, China
- Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, China
| | - Tao Geng
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikoou, China
| | - Zhong-Hua Pan
- School of Biology & Basic Medical Science, Soochow University, Suzhou, China
| | - Meng-Ke Shang
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, China
| | - Cheng-Xiang Hou
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, China
- Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, China
| | - Kun Gao
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, China
- Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, China
| | - Xi-Jie Guo
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, China
- Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, China
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16
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Swevers L, Feng M, Ren F, Sun J. Antiviral defense against Cypovirus 1 (Reoviridae) infection in the silkworm, Bombyx mori. ARCHIVES OF INSECT BIOCHEMISTRY AND PHYSIOLOGY 2020; 103:e21616. [PMID: 31502703 DOI: 10.1002/arch.21616] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 08/22/2019] [Accepted: 08/26/2019] [Indexed: 06/10/2023]
Abstract
Recent years have shown a large increase in studies of infection of the silkworm (Bombyx mori) with Cypovirus 1 (previously designated as B. mori cytoplasmic polyhedrosis virus), that causes serious damage in sericulture. Cypovirus 1 has a single-layered capsid that encapsulates a segmented double-strand RNA (dsRNA) genome which are attractive features for the establishment of a biotechnological platform for the production of specialized gene silencing agents, either as recombinant viruses or as viral-like particles with nonreplicative dsRNA cargo. For both combatting viral disease and application of Cypovirus-based pest control, however, a better understanding is needed of the innate immune response caused by Cypovirus infection of the midgut of lepidopteran larvae. Studies of deep sequencing of viral small RNAs have indicated the importance of the RNA interference pathway in the control of Cypovirus infection although many functional aspects still need to be elucidated and conclusive evidence is lacking. A considerable number of transcriptome studies were carried out that revealed a complex response that hitherto remains uncharacterized because of a dearth in functional studies. Also, the uptake mechanism of Cypovirus by the midgut cells remains unclarified because of contrasting mechanisms revealed by electron microscopy and functional studies. The field will benefit from an increase in functional studies that will depend on transgenic silkworm technology and reverse genetics systems for Cypovirus 1.
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Affiliation(s)
- Luc Swevers
- Institute of Biosciences & Applications, National Centre for Scientific Research "Demokritos", Insect Molecular Genetics, Athens, Greece
| | - Min Feng
- Institute of Biosciences & Applications, National Centre for Scientific Research "Demokritos", Insect Molecular Genetics, Athens, Greece
- College of Animal Science, Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, South China Agricultural University, Guangzhou, China
| | - Feifei Ren
- College of Animal Science, Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, South China Agricultural University, Guangzhou, China
| | - Jingchen Sun
- College of Animal Science, Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, South China Agricultural University, Guangzhou, China
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17
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Wang W, Wang X, Luo C, Pu Q, Yin Q, Xu L, Peng X, Ma S, Xia Q, Liu S. Let-7 microRNA is a critical regulator in controlling the growth and function of silk gland in the silkworm. RNA Biol 2020; 17:703-717. [PMID: 32019402 DOI: 10.1080/15476286.2020.1726128] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The silk gland is characterized by high protein synthesis. However, the molecular mechanisms controlling silk gland growth and silk protein synthesis remain undetermined. Here we demonstrated that CRISPR/Cas9-based knockdown of let-7 or the whole cluster promoted endoreduplication and enlargement of the silk gland, accompanied by changing silk yield, whereas transgenic overexpression of let-7 led to atrophy and degeneration of the silk gland. Mechanistically, let-7 controls cell growth in the silk gland through coordinating nutrient metabolism processes and energy signalling pathways. Transgenic overexpression of pyruvate carboxylase, a novel target of let-7, resulted in enlargement of the silk glands, which is consistent with the abnormal phenotype of the let-7 knockdown. Overall, our data reveal a previously unknown miRNA-mediated regulation of silk gland growth and physiology and shed light on involvement of let-7 as a critical stabilizer and booster in carbohydrate metabolism, which may have important implications for understanding of the molecular mechanism and physiological function of specialized organs in other species.
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Affiliation(s)
- Wei Wang
- State Key Laboratory of Silkworm Genome Biology, Biological Science Research Center, Southwest University, Chongqing, PR China
| | - Xinran Wang
- State Key Laboratory of Silkworm Genome Biology, Biological Science Research Center, Southwest University, Chongqing, PR China
| | - Chengyi Luo
- State Key Laboratory of Silkworm Genome Biology, Biological Science Research Center, Southwest University, Chongqing, PR China
| | - Qian Pu
- State Key Laboratory of Silkworm Genome Biology, Biological Science Research Center, Southwest University, Chongqing, PR China
| | - Quan Yin
- State Key Laboratory of Silkworm Genome Biology, Biological Science Research Center, Southwest University, Chongqing, PR China
| | - Lili Xu
- State Key Laboratory of Silkworm Genome Biology, Biological Science Research Center, Southwest University, Chongqing, PR China
| | - Xinyue Peng
- State Key Laboratory of Silkworm Genome Biology, Biological Science Research Center, Southwest University, Chongqing, PR China
| | - Sanyuan Ma
- State Key Laboratory of Silkworm Genome Biology, Biological Science Research Center, Southwest University, Chongqing, PR China
| | - Qingyou Xia
- State Key Laboratory of Silkworm Genome Biology, Biological Science Research Center, Southwest University, Chongqing, PR China.,Chongqing Key Laboratory of Sericultural Science, Chongqing Engineering and Technology Research Center for Novel Silk Materials, Southwest University, Chongqing, PR China
| | - Shiping Liu
- State Key Laboratory of Silkworm Genome Biology, Biological Science Research Center, Southwest University, Chongqing, PR China.,Chongqing Key Laboratory of Sericultural Science, Chongqing Engineering and Technology Research Center for Novel Silk Materials, Southwest University, Chongqing, PR China.,College of Life Science, China West Normal University, Nanchong, PR China
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18
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Wu P, Shang Q, Dweteh OA, Huang H, Zhang S, Zhong J, Hou Q, Guo X. Over expression of bmo-miR-2819 suppresses BmNPV replication by regulating the BmNPV ie-1 gene in Bombyx mori. Mol Immunol 2019; 109:134-139. [PMID: 30947109 DOI: 10.1016/j.molimm.2019.03.013] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Revised: 03/22/2019] [Accepted: 03/26/2019] [Indexed: 02/07/2023]
Abstract
Bombyx mori nucleopolyhedrovirus (BmNPV) is a major pathogen that threatens the growth and sustainability of the sericulture industry. Accumulating studies in recent years suggest that insect viruses infection can change the host microRNAs (miRNAs) expression profile and both cellular and viral miRNAs play roles in host-pathogen interactions. Until now, the functional analysis of miRNA encoded by silkworm for host-virus interaction is limited. In this study, we validate the down-regulation of bmo-miR-2819 upon BmNPV infection by qRT-PCR and confirm the BmNPV immediately early 1 gene, ie-1 is one of the targets for bmo-miR-2819 based on the results of dual luciferase report assay. Overexpression of bmo-miR-2819 can significantly decline the abundance of IE-1 protein level in BmNPV-infected silkworm larvae. Further, the expression level of polyhedrin gene and VP39 protein of BmNPV in the infected larvae after applying bmo-miR-2819 mimics was significantly decreased comparing with that of larvae with mimic control. Our results suggest that overexpression of bmo-miR-2819 could suppress BmNPV replication by down-regulating the expression of BmNPV ie-1 gene, which demonstrate that cellular miRNAs could affect virus infection by regulating the expression of virus genes.
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Affiliation(s)
- Ping Wu
- Sericultural Research Institute, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, 212018, China.
| | - Qi Shang
- Sericultural Research Institute, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, 212018, China
| | - Owusu Amanfo Dweteh
- Sericultural Research Institute, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, 212018, China
| | - Haoling Huang
- Sericultural Research Institute, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, 212018, China
| | - Shaolun Zhang
- Sericultural Research Institute, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, 212018, China
| | - Jinbo Zhong
- Sericultural Research Institute, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, 212018, China
| | - Qirui Hou
- Sericultural Research Institute, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, 212018, China
| | - Xijie Guo
- Sericultural Research Institute, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, 212018, China.
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19
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Nucleic Acid Sensing in Invertebrate Antiviral Immunity. NUCLEIC ACID SENSING AND IMMUNITY - PART B 2019; 345:287-360. [DOI: 10.1016/bs.ircmb.2018.11.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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20
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Song J, Li W, Zhao H, Gao L, Fan Y, Zhou S. The microRNAs let-7 and miR-278 regulate insect metamorphosis and oogenesis by targeting the juvenile hormone early-response gene Krüppel-homolog 1. Development 2018; 145:dev.170670. [PMID: 30470705 DOI: 10.1242/dev.170670] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Accepted: 11/14/2018] [Indexed: 01/07/2023]
Abstract
Krüppel-homolog 1 (Kr-h1), a zinc-finger transcription factor, inhibits larval metamorphosis and promotes adult reproduction by transducing juvenile hormone (JH). Although the transcriptional regulation of Kr-h1 has been extensively studied, little is known about its regulation at the post-transcriptional level. Using the migratory locust Locusta migratoria as a model system, we report here that the microRNAs let-7 and miR-278 bound to the Kr-h1 coding sequence and downregulated its expression. Application of let-7 and miR-278 mimics (agomiRs) significantly reduced the level of Kr-h1 transcripts, resulting in partially precocious metamorphosis in nymphs as well as markedly decreased yolk protein precursors, arrested ovarian development and blocked oocyte maturation in adults. Moreover, the expression of let-7 and miR-278 was repressed by JH, constituting a regulatory loop of JH signaling. This study thus reveals a previously unknown regulatory mechanism whereby JH suppresses the expression of let-7 and miR-278, which, together with JH induction of Kr-h1 transcription, prevents the precocious metamorphosis of nymphs and stimulates the reproduction of adult females. These results advance our understanding of the coordination of JH and miRNA regulation in insect development.
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Affiliation(s)
- Jiasheng Song
- Key Laboratory of Plant Stress Biology, State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng 475004, China
| | - Wanwan Li
- Key Laboratory of Plant Stress Biology, State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng 475004, China
| | - Haihong Zhao
- Key Laboratory of Plant Stress Biology, State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng 475004, China
| | - Lulu Gao
- Key Laboratory of Plant Stress Biology, State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng 475004, China
| | - Yuning Fan
- Key Laboratory of Plant Stress Biology, State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng 475004, China
| | - Shutang Zhou
- Key Laboratory of Plant Stress Biology, State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng 475004, China
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21
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Wei G, Sun L, Li R, Li L, Xu J, Ma F. Dynamic miRNA-mRNA regulations are essential for maintaining Drosophila immune homeostasis during Micrococcus luteus infection. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2018; 81:210-224. [PMID: 29198775 DOI: 10.1016/j.dci.2017.11.019] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Revised: 11/15/2017] [Accepted: 11/29/2017] [Indexed: 06/07/2023]
Abstract
Pathogen bacteria infections can lead to dynamic changes of microRNA (miRNA) and mRNA expression profiles, which may control synergistically the outcome of immune responses. To reveal the role of dynamic miRNA-mRNA regulation in Drosophila innate immune responses, we have detailedly analyzed the paired miRNA and mRNA expression profiles at three time points during Drosophila adult males with Micrococcus luteus (M. luteus) infection using RNA- and small RNA-seq data. Our results demonstrate that differentially expressed miRNAs and mRNAs represent extensively dynamic changes over three time points during Drosophila with M. luteus infection. The pathway enrichment analysis indicates that differentially expressed genes are involved in diverse signaling pathways, including Toll and Imd as well as orther signaling pathways at three time points during Drosophila with M. luteus infection. Remarkably, the dynamic change of miRNA expression is delayed by compared to mRNA expression change over three time points, implying that the "time" parameter should be considered when the function of miRNA/mRNA is further studied. In particular, the dynamic miRNA-mRNA regulatory networks have shown that miRNAs may synergistically regulate gene expressions of different signaling pathways to promote or inhibit innate immune responses and maintain homeostasis in Drosophila, and some new regulators involved in Drosophila innate immune response have been identified. Our findings strongly suggest that miRNA regulation is a key mechanism involved in fine-tuning cooperatively gene expressions of diverse signaling pathways to maintain innate immune response and homeostasis in Drosophila. Taken together, the present study reveals a novel role of dynamic miRNA-mRNA regulation in immune response to bacteria infection, and provides a new insight into the underlying molecular regulatory mechanism of Drosophila innate immune responses.
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Affiliation(s)
- Guanyun Wei
- Laboratory for Comparative Genomics and Bioinformatics, Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Science, Nanjing Normal University, Nanjing 210046, China
| | - Lianjie Sun
- Laboratory for Comparative Genomics and Bioinformatics, Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Science, Nanjing Normal University, Nanjing 210046, China
| | - Ruimin Li
- Laboratory for Comparative Genomics and Bioinformatics, Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Science, Nanjing Normal University, Nanjing 210046, China
| | - Lei Li
- Laboratory for Comparative Genomics and Bioinformatics, Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Science, Nanjing Normal University, Nanjing 210046, China; Laboratory of Intelligent Computation, School of Computer Science, Nanjing Normal University, Nanjing 210046, China
| | - Jiao Xu
- Laboratory for Comparative Genomics and Bioinformatics, Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Science, Nanjing Normal University, Nanjing 210046, China
| | - Fei Ma
- Laboratory for Comparative Genomics and Bioinformatics, Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Science, Nanjing Normal University, Nanjing 210046, China.
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Baculovirus-Encoded MicroRNAs: A Brief Overview and Future Prospects. Curr Microbiol 2018; 76:738-743. [PMID: 29487989 DOI: 10.1007/s00284-018-1443-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Accepted: 01/23/2018] [Indexed: 12/19/2022]
Abstract
MicroRNAs (miRNAs) are a class of non-coding RNAs with ∼22 nucleotides, which are able to regulate various biological processes, including the viral life cycle and host-pathogen interactions. Long primary transcripts (pri-miRNAs) are initially transcribed in nucleus, and subsequently processed by Dicer in cytoplasm to generate mature miRNAs. Baculoviruses consist of large, enveloped, insect-pathogenic viruses with a double-stranded circular DNA genome. Recent studies suggest that baculoviruses encode some miRNAs to manipulate expression regulation of host genes, whereas host modulate viral gene expression via miRNAs to limit viral infection. In the review, we will focus on the biogenesis and functions of miRNAs and the interactions between baculoviruses, insect, and miRNAs. It will be helpful to delve into the related mechanisms of BmNPV-encoded miRNAs that contribute to infection and pathogenesis.
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Hu X, Zhu M, Zhang X, Liu B, Liang Z, Huang L, Xu J, Yu L, Li K, Zar MS, Xue R, Cao G, Gong C. Identification and characterization of circular RNAs in the silkworm midgut following Bombyx mori cytoplasmic polyhedrosis virus infection. RNA Biol 2017; 15:292-301. [PMID: 29268657 DOI: 10.1080/15476286.2017.1411461] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The pathogenesis of Bombyx mori cytoplasmic polyhedrosis virus (BmCPV) infection is unclear, although accumulating evidence indicates that circular RNAs (circRNAs), which act as competing endogenous RNAs or positive regulators, play important roles in regulating gene expression in eukaryotes and, thus, may play a role in BmCPV infections. To explore the expression and biological functions of circRNAs in the silkworm midgut following BmCPV infection, silkworm circRNA expression profiles of normal midgut tissue (control) and BmCPV-infected midgut tissue (test) were determined using high-through sequencing. A total of 9,753 and 7,475circRNAs were detected from the control and test samples, respectively. The two samples shared 6,085 circRNAs, while 646 and 737 circRNAs were expressed specifically in the control and test samples, respectively. A total of 3,638 circRNAs were shown to be differentially expressed, and 400 circRNAs were substantially differentially expressed with a fold-change ≥ 2.0 (p< 0.05 and a false discover rate < 0.05), of which 294 were up-regulated and 106 were down-regulated following infection. Gene Ontology and Kyoto Encyclopedia of Genes and Genomes pathway enrichment analyses were conducted to determine the principal functions of the substantially differentially regulated genes. circRNA-miRNA interaction networks were constructed based on a correlation analysis between the differentially expressed circRNAs and the nature of their microRNA (miRNA) binding sites. The network inferred that 13 miRNAs interacting with 193 circRNAs were among the 300 most abundant relationships. bmo-miR-3389-5p, bmo-miR-745-3p, and bmo-miR-3262 were related to 30, 34, and 34 circRNAs, respectively. circRNA_8115, circRNA_9444, circRNA_4553, circRNA_0827, and circRNA_6649 contained six, five, four, four, and four miRNA binding sites, respectively. We further found that alternative circularization of circRNAs is a common feature in silkworms and that the junction sites of many silkworm circRNAs are flanked by canonical GT/AG splicing signals. Our study is the first to show the circRNA response to virus infection. Thus, it provides a novel perspective on circRNA-miRNA interactions during BmCPV pathogenesis, and it lays the foundation for future research of the potential roles of circRNAs in BmCPV pathogenesis.
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Affiliation(s)
- Xiaolong Hu
- a School of Biology & Basic Medical Science, Soochow University , Suzhou , China
| | - Min Zhu
- a School of Biology & Basic Medical Science, Soochow University , Suzhou , China
| | - Xing Zhang
- b Department of Infectious Disease , First Affiliated Hospital of Soochow University , Suzhou , China
| | - Bo Liu
- a School of Biology & Basic Medical Science, Soochow University , Suzhou , China
| | - Zi Liang
- a School of Biology & Basic Medical Science, Soochow University , Suzhou , China
| | - Lixu Huang
- a School of Biology & Basic Medical Science, Soochow University , Suzhou , China
| | - Jian Xu
- a School of Biology & Basic Medical Science, Soochow University , Suzhou , China
| | - Lei Yu
- a School of Biology & Basic Medical Science, Soochow University , Suzhou , China
| | - Kun Li
- a School of Biology & Basic Medical Science, Soochow University , Suzhou , China
| | - Mian Sahib Zar
- a School of Biology & Basic Medical Science, Soochow University , Suzhou , China
| | - Renyu Xue
- a School of Biology & Basic Medical Science, Soochow University , Suzhou , China.,c Institute of Agricultural Biotechnology and Ecological Research, Soochow University , Suzhou , China
| | - Guangli Cao
- a School of Biology & Basic Medical Science, Soochow University , Suzhou , China.,c Institute of Agricultural Biotechnology and Ecological Research, Soochow University , Suzhou , China
| | - Chengliang Gong
- a School of Biology & Basic Medical Science, Soochow University , Suzhou , China.,c Institute of Agricultural Biotechnology and Ecological Research, Soochow University , Suzhou , China
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Wu P, Jie W, Shang Q, Annan E, Jiang X, Hou C, Chen T, Guo X. DNA methylation in silkworm genome may provide insights into epigenetic regulation of response to Bombyx mori cypovirus infection. Sci Rep 2017; 7:16013. [PMID: 29167521 PMCID: PMC5700172 DOI: 10.1038/s41598-017-16357-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Accepted: 11/10/2017] [Indexed: 12/27/2022] Open
Abstract
DNA methylation is an important epigenetic modification that regulates a wide range of biological processes including immune response. However, information on the epigenetics-mediated immune mechanisms in insects is limited. Therefore, in this study, we examined transcriptomes and DNA methylomes in the fat body and midgut tissues of silkworm, Bombyx mori with or without B. mori cytoplasmic polyhedrosis virus (BmCPV) infection. The transcriptional profile and the genomic DNA methylation patterns in the midgut and fat body were tissue-specific and dynamically altered after BmCPV challenge. KEGG pathway analysis revealed that differentially methylated genes (DMGs) could be involved in pathways of RNA transport, RNA degradation, nucleotide excision repair, DNA replication, etc. 27 genes were shown to have both differential expression and differential methylation in the midgut and fat body of infected larvae, respectively, indicating that the BmCPV infection-induced expression changes of these genes could be mediated by variations in DNA methylation. BS-PCR validated the hypomethylation of G2/M phase-specific E3 ubiquitin-protein ligase-like gene in the BmCPV infected midgut. These results demonstrated that epigenetic regulation may play roles in host-virus interaction in silkworm and would be potential value for further studies on mechanism of BmCPV epithelial-specific infection and epigenetic regulation in the silkworm.
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Affiliation(s)
- Ping Wu
- Sericultural Research Institute, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, China
| | - Wencai Jie
- Beijing Genomics Institute (BGI), Shenzhen, Guangdong, China
| | - Qi Shang
- Sericultural Research Institute, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, China
| | - Enoch Annan
- Sericultural Research Institute, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, China
| | - Xiaoxu Jiang
- Sericultural Research Institute, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, China
| | - Chenxiang Hou
- Sericultural Research Institute, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, China
| | - Tao Chen
- Sericultural Research Institute, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, China
| | - Xijie Guo
- Sericultural Research Institute, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, China.
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25
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Inhibition of miR-274-3p increases BmCPV replication by regulating the expression of BmCPV NS5 gene in Bombyx mori. Virus Genes 2017; 53:643-649. [DOI: 10.1007/s11262-017-1466-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Accepted: 05/05/2017] [Indexed: 11/26/2022]
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26
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Wu P, Jiang X, Guo X, Li L, Chen T. Genome-Wide Analysis of Differentially Expressed microRNA in Bombyx mori Infected with Nucleopolyhedrosis Virus. PLoS One 2016; 11:e0165865. [PMID: 27806111 PMCID: PMC5091789 DOI: 10.1371/journal.pone.0165865] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Accepted: 10/19/2016] [Indexed: 12/26/2022] Open
Abstract
Bombyx mori nucleopolyhedrosis virus (BmNPV) is a major pathogen that threatens the growth and sustainability of the sericulture industry. Since microRNAs (miRNAs) have been shown to play important roles in host-pathogen interactions, in this study we investigated the effects of BmNPV infection on silkworm microRNAs expression profile. To achieve this, we constructed and deep-sequenced two small RNA libraries generated from BmNPV infected and un-infected larvae. The results revealed that 38 silkworm miRNAs were differentially expressed after BmNPV infection. Based on the GO analysis, their predicted target genes were found to be involved in diverse functions such as binding, catalytic, virion and immune response to stimulus suggesting their potential roles in host-virus interactions. Using the dual-luciferase reporter assay, we confirmed that Bmo-miR-277-5p, up-regulated in BmNPV-infected larvae, targeted the B. mori DNA cytosine-5 methyltransferase (Dnmt2) gene which may play potential role in silkworm-BmNPV interaction. These results provide new insights into exploring the interaction mechanism between silkworm and BmNPV.
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Affiliation(s)
- Ping Wu
- Sericultural Research Institute, Jiangsu University of Science and Technology, Zhenjiang Jiangsu, China
- Quality Inspection Center for Sericulture Products, Ministry of Agriculture, Zhenjiang Jiangsu, China
- * E-mail: (PW); (TC)
| | - Xiaoxu Jiang
- School of Biology, Jiangsu University of Science and Technology, Zhenjiang Jiangsu, China
| | - Xijie Guo
- Sericultural Research Institute, Jiangsu University of Science and Technology, Zhenjiang Jiangsu, China
| | - Long Li
- Sericultural Research Institute, Jiangsu University of Science and Technology, Zhenjiang Jiangsu, China
- Quality Inspection Center for Sericulture Products, Ministry of Agriculture, Zhenjiang Jiangsu, China
| | - Tao Chen
- Sericultural Research Institute, Jiangsu University of Science and Technology, Zhenjiang Jiangsu, China
- Quality Inspection Center for Sericulture Products, Ministry of Agriculture, Zhenjiang Jiangsu, China
- * E-mail: (PW); (TC)
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