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Zhu Y, Hu ZG, Chen P, Xiao Q, Xiao Y, Jia XY, Dong ZQ, Pan MH, Lu C. CRISPR/Cas9-mediated disruption of orf76 as an antiviral therapy against BmNPV in the transgenic silkworm. Int J Biol Macromol 2024; 278:134773. [PMID: 39151843 DOI: 10.1016/j.ijbiomac.2024.134773] [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: 07/03/2024] [Revised: 08/13/2024] [Accepted: 08/13/2024] [Indexed: 08/19/2024]
Abstract
Viral diseases pose a significant threat to livestock husbandry and plant cultivation. CRISPR/Cas9-mediated targeted editing of viral genes offers a promising approach to antiviral therapy. The silkworm, Bombyx mori, is an economically important insect susceptible to infection by B. mori nucleopolyhedrovirus (BmNPV), and viral outbreaks cause severe economic losses to the sericulture industry. Here, we identified BmNPV orf76 as a viral late gene that is highly similar to Autographa californica multiple nucleopolyhedrovirus Ac93. The deletion of orf76 abolished BmNPV proliferation and hindered the production of infectious budded viruses. We generated a transgenic line, Cas9(+)/sgorf76(+), that did not affect the growth or development of the silkworm and demonstrated that the transgenic line Cas9(+)/sgorf76(+) efficiently cleaved orf76 at the sgorf76 site, resulting in large deletions at 120 h post-infection, with no observed off-target effects. Survival analyses revealed that the transgenic line Cas9(+)/sgorf76(+) exhibited significantly higher survival rates than the control lines Cas9(-)/sgorf76(-), regardless of the BmNPV inoculation dose. Additionally, the number of BmNPV DNA copies and the expression levels of viral genes were markedly inhibited in the transgenic line Cas9(+)/sgorf76(+) compared with the control line Cas9(-)/sgorf76(-). The results provide a promising target for Cas9-mediated antiviral therapy against BmNPV, and the findings provide new insights for baculovirus gene function studies and lepidopteran pest control.
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Affiliation(s)
- Yan Zhu
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400715, China
| | - Zhi-Gang Hu
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400715, China
| | - Peng Chen
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400715, China; Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, Southwest University, Chongqing 400716, China
| | - Qin Xiao
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400715, China
| | - Yu Xiao
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400715, China
| | - Xin-Yue Jia
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400715, China
| | - Zhan-Qi Dong
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400715, China; Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, Southwest University, Chongqing 400716, China
| | - Min-Hui Pan
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400715, China; Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, Southwest University, Chongqing 400716, China.
| | - Cheng Lu
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400715, China; Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, Southwest University, Chongqing 400716, China.
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2
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Aramwit P, Jiang Q, Muppuri S, Reddy N. Transgenic modifications of silkworms as a means to obtain therapeutic biomolecules and protein fibers with exceptional properties. Biotechnol Bioeng 2023; 120:2827-2839. [PMID: 37243890 DOI: 10.1002/bit.28455] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 04/25/2023] [Accepted: 05/18/2023] [Indexed: 05/29/2023]
Abstract
Transgenic modification of Bombyx mori silkworms is a benign approach for the production of silk fibers with extraordinary properties and also to generate therapeutic proteins and other biomolecules for various applications. Silk fibers with fluorescence lasting more than a year, natural protein fibers with strength and toughness exceeding that of spider silk, proteins and therapeutic biomolecules with exceptional properties have been developed using transgenic technology. The transgenic modifications have been done primarily by modifying the silk sericin and fibroin genes and also the silk producing glands. Although the genetic modifications were typically performed using the sericin 1 and other genes, newer techniques such as CRISPR/Cas9 have enabled successful modifications of both the fibroin H-chain and L-chain. Such modifications have led to the production of therapeutic proteins and other biomolecules in reasonable quantities at affordable costs for tissue engineering and other medical applications. Transgenically modified silkworms also have distinct and long-lasting fluorescence useful for bioimaging applications. This review presents an overview of the transgenic techniques for modifications of B. mori silkworms and the properties obtained due to such modifications with particular focus on production of growth factors, fluorescent proteins, and high performance protein fibers.
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Affiliation(s)
- Pornanong Aramwit
- Department of Pharmacy Practice, Faculty of Pharmaceutical Sciences and Center of Excellence in Bioactive Resources for Innovative Clinical Applications, Chulalongkorn University, Bangkok, Thailand
- The Academy of Science, The Royal Society of Thailand, Dusit, Bangkok, Thailand
| | - Qiuran Jiang
- Key Laboratory of Textile Science &Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai, China
- College of Textiles, Donghua University, Shanghai, China
| | - Supritha Muppuri
- Center for Incubation, Innovation, Research and Consultancy, Jyothy Institute of Technology, Thataguni Post, Bengaluru, India
| | - Narendra Reddy
- Center for Incubation, Innovation, Research and Consultancy, Jyothy Institute of Technology, Thataguni Post, Bengaluru, India
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Xia Y, Jiang M, Hu X, Wang Q, Qian C, Zhu B, Wei G, Wang L. A Protein Asteroid with PIN Domain in Silkworm Bombyx mori Is Involved in Anti-BmNPV Infection. INSECTS 2023; 14:550. [PMID: 37367365 DOI: 10.3390/insects14060550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 06/12/2023] [Accepted: 06/12/2023] [Indexed: 06/28/2023]
Abstract
Nuclease is a type of protein that degrades nucleic acids, which plays an important role in biological processes, including RNA interference efficiency and antiviral immunity. However, no evidence of a link between nuclease and Bombyx mori nucleopolyhedrovirus (BmNPV) infection in silkworm B. mori has been found. In this study, a protein asteroid (BmAst) containing the PIN domain and XPG domain was identified in silkworm B. mori. BmAst gene was highest expressed in hemocytes and fat body of the 5th instar larvae, and high expression in the pupa stage. The transcriptional levels of the BmAst gene in 5th instar larvae were significantly induced by BmNPV or dsRNA. After knocking down BmAst gene expression by specific dsRNA, the proliferation of BmNPV in B. mori was increased significantly, whereas the survival rate of larvae was significantly lower when compared with the control. Our findings indicate that BmAst is involved in silkworm resistance to BmNPV infection.
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Affiliation(s)
- Yuchen Xia
- School of Life Science, Anhui Agricultural University, Hefei 230036, China
| | - Mouzhen Jiang
- School of Life Science, Anhui Agricultural University, Hefei 230036, China
| | - Xiaoxuan Hu
- School of Life Science, Anhui Agricultural University, Hefei 230036, China
| | - Qing Wang
- School of Life Science, Anhui Agricultural University, Hefei 230036, China
| | - Cen Qian
- School of Life Science, Anhui Agricultural University, Hefei 230036, China
| | - Baojian Zhu
- School of Life Science, Anhui Agricultural University, Hefei 230036, China
| | - Guoqing Wei
- School of Life Science, Anhui Agricultural University, Hefei 230036, China
| | - Lei Wang
- School of Life Science, Anhui Agricultural University, Hefei 230036, China
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Fan Y, Wu P, Sun Q, Yu B, Zhang Y, Wei J, Pan G, Li C, Zhou Z. The development of single-chain antibody anchored on the BmE cell membrane to inhibit BmNPV infection. J Invertebr Pathol 2023; 198:107937. [PMID: 37209810 DOI: 10.1016/j.jip.2023.107937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Revised: 04/25/2023] [Accepted: 05/15/2023] [Indexed: 05/22/2023]
Abstract
Bombyx mori nucleopolyhedrovirus (BmNPV) poses a significant threat to sericulture production, and traditional sanitation practices remain the main strategy for controlling BmNPV infection. Although RNAi targeting BmNPV genes engineered into transgenic silkworms has shown to be a promising approach in reducing viral infection, it cannot block viral entry into host cells. Therefore, there is an urgent need to develop new effective prevention and control measures. In this study, we screened a monoclonal antibody 6C5 that potently neutralizes BmNPV infection by clamping the internal fusion loop of the BmNPVglycoprotein64 (GP64). Furthermore, we cloned the VH and VL fragments of mAb-6C5 from the hybridoma cell, and the eukaryotic expression vector of scFv6C5 was constructed to anchor the antibody on the cell membrane. The GP64 fusion loop antibody-expressing cells exhibited a reduced capacity for BmNPV infection. The results from our study provide a novel BmNPV control strategy and lay the foundation for the future development of transgenic silkworms with improved antiviral efficacy.
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Affiliation(s)
- Youpeng Fan
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400715, China; Chongqing Key Laboratory of Microsporidia Infection and Prevention, Southwest University, Chongqing, 400715, China
| | - Pengfei Wu
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400715, China; Chongqing Key Laboratory of Microsporidia Infection and Prevention, Southwest University, Chongqing, 400715, China
| | - Quan Sun
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400715, China; Chongqing Key Laboratory of Microsporidia Infection and Prevention, Southwest University, Chongqing, 400715, China
| | - Bin Yu
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400715, China; Chongqing Key Laboratory of Microsporidia Infection and Prevention, Southwest University, Chongqing, 400715, China
| | - Yonghua Zhang
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400715, China
| | - Junhong Wei
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400715, China; Chongqing Key Laboratory of Microsporidia Infection and Prevention, Southwest University, Chongqing, 400715, China
| | - Guoqing Pan
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400715, China; Chongqing Key Laboratory of Microsporidia Infection and Prevention, Southwest University, Chongqing, 400715, China
| | - Chunfeng Li
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400715, China; Chongqing Key Laboratory of Microsporidia Infection and Prevention, Southwest University, Chongqing, 400715, China
| | - Zeyang Zhou
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400715, China; Chongqing Key Laboratory of Microsporidia Infection and Prevention, Southwest University, Chongqing, 400715, China; College of Life Sciences, Chongqing Normal University, Chongqing 401331, China.
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CRISPR/Cas9-Mediated Disruption of the lef8 and lef9 to Inhibit Nucleopolyhedrovirus Replication in Silkworms. Viruses 2022; 14:v14061119. [PMID: 35746591 PMCID: PMC9227026 DOI: 10.3390/v14061119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 05/08/2022] [Accepted: 05/09/2022] [Indexed: 02/01/2023] Open
Abstract
Bombyx mori nucleopolyhedrovirus (BmNPV) is a pathogen that causes severe disease in silkworms. In a previous study, we demonstrated that by using the CRISPR/Cas9 system to disrupt the BmNPV ie-1 and me53 genes, transgenic silkworms showed resistance to BmNPV infection. Here, we used the same strategy to simultaneously target lef8 and lef9, which are essential for BmNPV replication. A PCR assay confirmed that double-stranded breaks were induced in viral DNA at targeted sequences in BmNPV-infected transgenic silkworms that expressed small guide RNAs (sgRNAs) and Cas9. Bioassays and qPCR showed that replication of BmNPV and mortality were significantly reduced in the transgenic silkworms in comparison with the control groups. Microscopy showed degradation of midgut cells in the BmNPV-infected wild type silkworms, but not in the transgenic silkworms. These results demonstrated that transgenic silkworms using the CRISPR/Cas9 system to disrupt BmNPV lef8 and lef9 genes could successfully prevent BmNPV infection. Our research not only provides more alternative targets for the CRISPR antiviral system, but also aims to provide new ideas for the application of virus infection research and the control of insect pests.
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Pan X, Luo Y, Liao N, Zhang Y, Xiao M, Chen P, Lu C, Dong Z. CRISPR/Cpf1 multiplex genome editing system increases silkworm tolerance to BmNPV. Int J Biol Macromol 2022; 200:566-573. [PMID: 35066025 DOI: 10.1016/j.ijbiomac.2022.01.109] [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: 12/20/2021] [Revised: 01/14/2022] [Accepted: 01/17/2022] [Indexed: 11/25/2022]
Abstract
The CRISPR/Cas9 genome editing technology is now widely used in insect studies, but the use of CRISPR can be further increased to improve insect genome engineering. We established a direct mutation at multiple loci in several genes simultaneously used by CRISPR/Cpf1 multiplex genome editing technology to target the BmNPV genome. We constructed a transgenic line that can target the BmNPV ie-1, gp64, and DNApoly genes simultaneously, and hybridized this line with an FnCpf1 transgenic line to obtain an FnCpf1 × gNPVM binary hybrid expression system and to activate the FnCpf1 gene editing system. We showed that the multiple gene editing system introduced deletions, mutations, and insertions at three target sites, and that it did not affect the economic traits of transgenic silkworm lines. The antiviral response of multiplexed genome editing lines increased significantly, and viral gene transcription and replication were significantly affected in the transgenic silkworm lines. This study provides innovative resistance materials for silkworm breeding and also provides a simplified platform for efficient insect multi genome engineering and genetic operation.
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Affiliation(s)
- Xuan Pan
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400716, China
| | - Yan Luo
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400716, China
| | - Nachuan Liao
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400716, China
| | - Ya Zhang
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400716, China
| | - Miao Xiao
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400716, China
| | - Peng Chen
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400716, China
| | - Cheng Lu
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400716, China; Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, Southwest University, Chongqing 400716, China.
| | - Zhanqi Dong
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400716, China; Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, Southwest University, Chongqing 400716, China.
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7
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Liu Y, Chen D, Zhang X, Chen S, Yang D, Tang L, Yang X, Wang Y, Luo X, Wang M, Hu Z, Huang Y. Construction of Baculovirus-Inducible CRISPR/Cas9 Antiviral System Targeting BmNPV in Bombyx mori. Viruses 2021; 14:59. [PMID: 35062262 PMCID: PMC8780094 DOI: 10.3390/v14010059] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 12/23/2021] [Accepted: 12/23/2021] [Indexed: 12/26/2022] Open
Abstract
The silkworm Bombyx mori is an economically important insect. The sericulture industry is seriously affected by pathogen infections. Of these pathogens, Bombyx mori nucleopolyhedrovirus (BmNPV) causes approximately 80% of the total economic losses due to pathogen infections. We previously constructed a BmNPV-specific CRISPR/Cas9 silkworm line with significantly enhanced resistance to BmNPV. In order to optimize the resistance properties and minimize its impact on economic traits, we constructed an inducible CRISPR/Cas9 system for use in transgenic silkworms. We used the 39k promoter, which is induced by viral infection, to express Cas9 and the U6 promoter to express four small guide RNA targeting the genes encoding BmNPV late expression factors 1 and 3 (lef-1 and lef-3, respectively), which are essential for viral DNA replication. The system was rapidly activated when the silkworm was infected and showed considerably higher resistance to BmNPV infection than the wild-type silkworm. The inducible system significantly reduced the development effects due to the constitutive expression of Cas9. No obvious differences in developmental processes or economically important characteristics were observed between the resulting transgenic silkworms and wild-type silkworms. Adoption of this accurate and highly efficient inducible CRISPR/Cas9 system targeting BmNPV DNA replication will result in enhanced antivirus measures during sericulture, and our work also provides insights into the broader application of the CRISPR/Cas9 system in the control of infectious diseases and insect pests.
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Affiliation(s)
- Yujia Liu
- Key Laboratory of Insect Developmental and Evolutionary Biology, Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China; (Y.L.); (S.C.); (D.Y.); (L.T.); (X.Y.); (Y.W.); (X.L.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Dongbin Chen
- Department of Sericulture, College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang 110866, China;
| | - Xiaoqian Zhang
- China College of Forestry, Shandong Agricultural University, Taian 271018, China;
| | - Shuqing Chen
- Key Laboratory of Insect Developmental and Evolutionary Biology, Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China; (Y.L.); (S.C.); (D.Y.); (L.T.); (X.Y.); (Y.W.); (X.L.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Dehong Yang
- Key Laboratory of Insect Developmental and Evolutionary Biology, Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China; (Y.L.); (S.C.); (D.Y.); (L.T.); (X.Y.); (Y.W.); (X.L.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Linmeng Tang
- Key Laboratory of Insect Developmental and Evolutionary Biology, Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China; (Y.L.); (S.C.); (D.Y.); (L.T.); (X.Y.); (Y.W.); (X.L.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xu Yang
- Key Laboratory of Insect Developmental and Evolutionary Biology, Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China; (Y.L.); (S.C.); (D.Y.); (L.T.); (X.Y.); (Y.W.); (X.L.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yaohui Wang
- Key Laboratory of Insect Developmental and Evolutionary Biology, Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China; (Y.L.); (S.C.); (D.Y.); (L.T.); (X.Y.); (Y.W.); (X.L.)
| | - Xingyu Luo
- Key Laboratory of Insect Developmental and Evolutionary Biology, Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China; (Y.L.); (S.C.); (D.Y.); (L.T.); (X.Y.); (Y.W.); (X.L.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Manli Wang
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, China;
| | - Zhihong Hu
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, China;
| | - Yongping Huang
- Key Laboratory of Insect Developmental and Evolutionary Biology, Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China; (Y.L.); (S.C.); (D.Y.); (L.T.); (X.Y.); (Y.W.); (X.L.)
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Baci GM, Cucu AA, Giurgiu AI, Muscă AS, Bagameri L, Moise AR, Bobiș O, Rațiu AC, Dezmirean DS. Advances in Editing Silkworms ( Bombyx mori) Genome by Using the CRISPR-Cas System. INSECTS 2021; 13:28. [PMID: 35055871 PMCID: PMC8777690 DOI: 10.3390/insects13010028] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 12/18/2021] [Accepted: 12/23/2021] [Indexed: 12/12/2022]
Abstract
CRISPR (clustered regularly interspaced short palindromic repeats)-Cas (CRISPR-associated) represents a powerful genome editing technology that revolutionized in a short period of time numerous natural sciences branches. Therefore, extraordinary progress was made in various fields, such as entomology or biotechnology. Bombyx mori is one of the most important insects, not only for the sericulture industry, but for numerous scientific areas. The silkworms play a key role as a model organism, but also as a bioreactor for the recombinant protein production. Nowadays, the CRISPR-Cas genome editing system is frequently used in order to perform gene analyses, to increase the resistance against certain pathogens or as an imaging tool in B. mori. Here, we provide an overview of various studies that made use of CRISPR-Cas for B. mori genome editing, with a focus on emphasizing the high applicability of this system in entomology and biological sciences.
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Affiliation(s)
- Gabriela-Maria Baci
- Faculty of Animal Science and Biotechnology, University of Animal Sciences and Veterinary Medicine Cluj-Napoca, 400372 Cluj-Napoca, Romania; (G.-M.B.); (A.-A.C.); (A.-I.G.); (A.-S.M.); (L.B.); (O.B.); (D.S.D.)
| | - Alexandra-Antonia Cucu
- Faculty of Animal Science and Biotechnology, University of Animal Sciences and Veterinary Medicine Cluj-Napoca, 400372 Cluj-Napoca, Romania; (G.-M.B.); (A.-A.C.); (A.-I.G.); (A.-S.M.); (L.B.); (O.B.); (D.S.D.)
| | - Alexandru-Ioan Giurgiu
- Faculty of Animal Science and Biotechnology, University of Animal Sciences and Veterinary Medicine Cluj-Napoca, 400372 Cluj-Napoca, Romania; (G.-M.B.); (A.-A.C.); (A.-I.G.); (A.-S.M.); (L.B.); (O.B.); (D.S.D.)
| | - Adriana-Sebastiana Muscă
- Faculty of Animal Science and Biotechnology, University of Animal Sciences and Veterinary Medicine Cluj-Napoca, 400372 Cluj-Napoca, Romania; (G.-M.B.); (A.-A.C.); (A.-I.G.); (A.-S.M.); (L.B.); (O.B.); (D.S.D.)
| | - Lilla Bagameri
- Faculty of Animal Science and Biotechnology, University of Animal Sciences and Veterinary Medicine Cluj-Napoca, 400372 Cluj-Napoca, Romania; (G.-M.B.); (A.-A.C.); (A.-I.G.); (A.-S.M.); (L.B.); (O.B.); (D.S.D.)
| | - Adela Ramona Moise
- Faculty of Animal Science and Biotechnology, University of Animal Sciences and Veterinary Medicine Cluj-Napoca, 400372 Cluj-Napoca, Romania; (G.-M.B.); (A.-A.C.); (A.-I.G.); (A.-S.M.); (L.B.); (O.B.); (D.S.D.)
| | - Otilia Bobiș
- Faculty of Animal Science and Biotechnology, University of Animal Sciences and Veterinary Medicine Cluj-Napoca, 400372 Cluj-Napoca, Romania; (G.-M.B.); (A.-A.C.); (A.-I.G.); (A.-S.M.); (L.B.); (O.B.); (D.S.D.)
| | | | - Daniel Severus Dezmirean
- Faculty of Animal Science and Biotechnology, University of Animal Sciences and Veterinary Medicine Cluj-Napoca, 400372 Cluj-Napoca, Romania; (G.-M.B.); (A.-A.C.); (A.-I.G.); (A.-S.M.); (L.B.); (O.B.); (D.S.D.)
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Zhu GH, Albishi NM, Chen X, Brown RL, Palli SR. Expanding the Toolkit for Genome Editing in a Disease Vector, Aedes aegypti: Transgenic Lines Expressing Cas9 and Single Guide RNA Induce Efficient Mutagenesis. CRISPR J 2021; 4:846-853. [PMID: 33450159 PMCID: PMC8742270 DOI: 10.1089/crispr.2020.0052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
CRISPR-Cas9 mediated genome editing methods are being used for the analysis of gene function. However, it is hard to identify gene knockout mutants for genes whose knockout does not cause distinct phenotypes. To overcome this issue in the disease vector, Aedes aegypti, a transgenic Cas9/single guide RNA (sgRNA) method, was used to knock out the eye marker gene, kynurenine 3-monooxygenase (kmo), and the juvenile hormone receptor, Methoprene-tolerant (Met). PiggyBac transformation vectors were prepared to express sgRNAs targeting kmo and Met under the control of the U6 promoter. Transgenic Ae. aegypti expressing kmo-sgRNA or Met-sgRNA under the control of the U6 promoter and enhanced green fluorescent protein (eGFP) under the control of the hr5ie1 promoter were produced. The U6-sgRNA adults were mated with AAEL010097-Cas9 adults. The progeny were screened, and the insects expressing eGFP and DsRed were selected and evaluated for mutations in target genes. About 77% and 78% of the progeny that were positive for both eGFP and DsRed in kmo-sgRNA and Met-sgRNA groups, respectively, showed mutations in their target genes.
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Affiliation(s)
- Guan-Heng Zhu
- Department of Entomology, College of Agriculture, Food and Environment, University of Kentucky, Lexington, Kentucky, USA
| | - Najla M. Albishi
- Department of Entomology, College of Agriculture, Food and Environment, University of Kentucky, Lexington, Kentucky, USA
| | - Xien Chen
- Department of Entomology, College of Agriculture, Food and Environment, University of Kentucky, Lexington, Kentucky, USA
| | - Rachel L. Brown
- Department of Entomology, College of Agriculture, Food and Environment, University of Kentucky, Lexington, Kentucky, USA
| | - Subba Reddy Palli
- Department of Entomology, College of Agriculture, Food and Environment, University of Kentucky, Lexington, Kentucky, USA
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10
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Baddeley HJE, Isalan M. The Application of CRISPR/Cas Systems for Antiviral Therapy. Front Genome Ed 2021; 3:745559. [PMID: 34723245 PMCID: PMC8549726 DOI: 10.3389/fgeed.2021.745559] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 09/23/2021] [Indexed: 12/18/2022] Open
Abstract
As CRISPR/Cas systems have been refined over time, there has been an effort to apply them to real world problems, such as developing sequence-targeted antiviral therapies. Viruses pose a major threat to humans and new tools are urgently needed to combat these rapidly mutating pathogens. Importantly, a variety of CRISPR systems have the potential to directly cleave DNA and RNA viral genomes, in a targeted and easily-adaptable manner, thus preventing or treating infections. This perspective article highlights recent studies using different Cas effectors against various RNA viruses causing acute infections in humans; a latent virus (HIV-1); a chronic virus (hepatitis B); and viruses infecting livestock and animal species of industrial importance. The outlook and remaining challenges are discussed, particularly in the context of tacking newly emerging viruses, such as SARS-CoV-2.
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Affiliation(s)
- Helen J E Baddeley
- Department of Life Sciences, Imperial College London, London, United Kingdom
| | - Mark Isalan
- Department of Life Sciences, Imperial College London, London, United Kingdom
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11
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Geng T, Lu F, Zhu F, Wang S. Lineage-specific gene evolution of innate immunity in Bombyx mori to adapt to challenge by pathogens, especially entomopathogenic fungi. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2021; 123:104171. [PMID: 34118279 DOI: 10.1016/j.dci.2021.104171] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 06/07/2021] [Accepted: 06/08/2021] [Indexed: 06/12/2023]
Abstract
Bombyx mori is a model species of Lepidoptera, in which 21 gene families and 220 genes have been identified as involved in immunity. However, only 45 B. mori - Drosophila melanogaster - Anopheles gambiae - Apis mellifera - Tribolium castaneum 1:1:1:1:1 orthologous genes were identified. B. mori has unique immune factors not found in D. melanogaster - A. gambiae - A. mellifera - T. castaneum. Pattern recognition receptors, signal transducers and effector genes for antifungal immune responses in B. mori have evolved through expansion and modification of existing genes. This review summarizes the current knowledge of the antifungal immune responses of B. mori and focuses on the lineage-specific gene evolution used by Lepidoptera to adapt to the challenge by pathogens, especially entomopathogenic fungi.
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Affiliation(s)
- Tao Geng
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China; Sericulture Research Center, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China.
| | - Fuping Lu
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China; Sericulture Research Center, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China.
| | - Feng Zhu
- College of Life Sciences, Zaozhuang University, Zaozhuang, 277160, China.
| | - Shuchang Wang
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China; Sericulture Research Center, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China.
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12
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Geng T, Lu F, Wu H, Lou D, Tu N, Zhu F, Wang S. Target antifungal peptides of immune signalling pathways in silkworm, Bombyx mori, against Beauveria bassiana. INSECT MOLECULAR BIOLOGY 2021; 30:102-112. [PMID: 33150694 DOI: 10.1111/imb.12681] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 10/12/2020] [Accepted: 10/28/2020] [Indexed: 06/11/2023]
Abstract
Antifungal innate immunity is an important defence used by insects against entomogenous fungi. However, the downstream target antifungal peptides of different immune signalling pathways are unknown. We found that the Toll, Janus kinase/signal transducer and activator of transcription (Jak/STAT) and Immunodeficiency (IMD) signalling pathways in the silkworm, Bombyx mori, can be activated by Beauveria bassiana. Inhibition of the Toll, IMD and Jak/STAT signalling pathways reduced the antifungal activities of silkworm haemolymph. We verified the target antifungal peptides of different immune signalling pathways. The expression patterns of five anti-fungal peptide genes in silkworm larvae and BmN cells were detected after blocking or over-expressing the immune signalling pathways. The Toll signalling pathways mediated the expression of Bmcecropin A, Bmattacin 1 and Bmgloverin 2; IMD signalling pathways mediated Bmenbocin 1, Bmgloverin 2 and Bmattacin 1; Jak/STAT signalling pathways mediated Bmstorage protein 30K-19G1 (Bmsp 1), Bmattacin 1 and Bmcecropin A. These data indicated that anti-microbial peptide genes in B. mori evolved through expansion and selection of existing genes to adapt to the challenge of invasive microorganisms such as fungi. This information provides insight into the antifungal immune responses in B. mori and aids understanding of insect immune regulation mechanisms.
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Affiliation(s)
- T Geng
- Institute of Environment and Plant Protection, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - F Lu
- Institute of Environment and Plant Protection, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - H Wu
- Institute of Environment and Plant Protection, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - D Lou
- College of Plant Protection, Hainan University, Haikou, China
| | - N Tu
- College of Tropical Crop, Hainan University, Haikou, China
| | - F Zhu
- College of Life Sciences, Zaozhuang University, Zaozhuang, China
| | - S Wang
- Institute of Environment and Plant Protection, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
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13
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Dong Z, Zheng N, Hu C, Huang X, Chen P, Wu Q, Deng B, Lu C, Pan M. Genetic bioengineering of overexpressed guanylate binding protein family BmAtlastin-n enhances silkworm resistance to Nosema bombycis. Int J Biol Macromol 2021; 172:223-230. [PMID: 33453252 DOI: 10.1016/j.ijbiomac.2021.01.021] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2020] [Revised: 12/25/2020] [Accepted: 01/04/2021] [Indexed: 11/15/2022]
Abstract
Microsporidia are obligate single-celled eukaryote parasites. Microsporidian infection can cause large economic losses to beneficial insects such as silkworms and honey bees. Identification of resistance biomacromolecules and breeding of transgenic lines resistant to the microsporidian Nosema bombycis are important for disease management. We previously used transcriptome analysis to identify a guanylate binding protein family BmAtlastin-n gene that was significantly upregulated after Nosema bombycis infection, and we determined that the molecule was highly expressed in resistance-related tissues such as the midgut, fat body and the epidermis. The transgenic silkworm line overexpressing BmAtlastin-n biomolecules had economic characters similar to those of non-transgenic lines. The transgenic OE-BmAtlastin-n lines had significantly improved survival after microspore infection. We used RT-PCR and H&E staining to show that the number of spores in the transgenic lines was significantly lower than in the control lines. In this study, we identified a BmAtlastin-n macromolecule with resistance to N. bombycis and developed a transgenic line. The results improved understanding of the GBP protein family and provided biomacromolecule material for the treatment and prevention of microsporidia.
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Affiliation(s)
- Zhanqi Dong
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400716, China; Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture, Southwest University, Chongqing 400716, China
| | - Ning Zheng
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400716, China
| | - Congwu Hu
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400716, China
| | - Xuhua Huang
- The General Extension Station of Sericulture Technology of Guangxi Zhuang Autonomous Region, Nanning 530007, China
| | - Peng Chen
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400716, China; Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture, Southwest University, Chongqing 400716, China
| | - Qin Wu
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400716, China
| | - Boyuan Deng
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400716, China
| | - Cheng Lu
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400716, China; Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture, Southwest University, Chongqing 400716, China.
| | - Minhui Pan
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400716, China; Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture, Southwest University, Chongqing 400716, China.
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14
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Dong Z, Qin Q, Hu Z, Zhang X, Miao J, Huang L, Chen P, Lu C, Pan M. CRISPR/Cas12a Mediated Genome Editing Enhances Bombyx mori Resistance to BmNPV. Front Bioeng Biotechnol 2020; 8:841. [PMID: 32760714 PMCID: PMC7373793 DOI: 10.3389/fbioe.2020.00841] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 06/30/2020] [Indexed: 12/31/2022] Open
Abstract
CRISPR/Cas12a (Cpf1) is a single RNA-guided endonuclease that provides new opportunities for targeted genome engineering through the CRISPR/Cas9 system. Only AsCas12a has been developed for insect genome editing, and the novel Cas12a orthologs nucleases and editing efficiency require more study on insects. We compared three Cas12a orthologs nucleases, AsCas12a, FnCas12a, and LbCas12a, for their editing efficiencies and antiviral abilities. The three Cas12a efficiently edited the Bombyx mori nucleopolyhedrovirus (BmNPV) genome and inhibited BmNPV replication in BmN-SWU1 cells. The antiviral ability of the FnCas12a system was more efficient than that of the SpCas9 system after infection by BmNPV. We created FnCas12a × gIE1 and SpCas9 × sgIE1 transgenic hybrid lines and evaluated the gene-editing efficiency of different systems at the same target site. We improved the antiviral ability using the FnCas12a system in transgenic silkworm. This study demonstrated the use of the CRISPR/Cas12a system to achieve high editing efficiencies, and increase disease resistance in the silkworm.
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Affiliation(s)
- Zhanqi Dong
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, China
| | - Qi Qin
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, China
| | - Zhigang Hu
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, China
| | - Xinling Zhang
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, China
| | - Jianghao Miao
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, China
| | - Liang Huang
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, China
| | - Peng Chen
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, China
| | - Cheng Lu
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, China.,Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, Southwest University, Chongqing, China
| | - Minhui Pan
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, China.,Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, Southwest University, Chongqing, China
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15
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Li R, Hu C, Geng T, Lv D, Gao K, Guo X, Hou C. Expressional analysis of the silkworm storage protein 1 and identification of its interacting proteins. INSECT MOLECULAR BIOLOGY 2020; 29:66-76. [PMID: 31301266 DOI: 10.1111/imb.12610] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 07/07/2019] [Accepted: 07/08/2019] [Indexed: 06/10/2023]
Abstract
Storage proteins are haemolymph-specific proteins in insects, mainly synthesized in the fat body, released into the haemolymph, and then selectively reabsorbed by the fat body before pupation. These storage proteins play an important role in insect metamorphosis and egg development. Some of these storage proteins are responsive to pathogen infection and can even suppress pathogen multiplication. However, the mechanisms of the physiological, biochemical and immune-responsive functions of storage proteins remain unclear. In this study, the expression patterns of Bombyx mori storage protein 1 (BmSP1) during the larval stage were analysed. Then, BmSP1 protein fused with enhanced green fluorescent protein (EGFP) was successfully expressed in a B. mori baculovirus vector expression system. Quantitative real-time PCR showed that the expression level of BmSP1 increased with the advance of instars and reached the highest level in the fifth instar, especially in the fat body. Recombinant BmSP1 expressed in silkworm larvae inhibited haemolymph melanization. Then, proteins that interact with BmSP1 were identified with EGFP used as an antigenic determinant by co-immunoprecipitation. A 30 kDa low molecular weight lipoprotein PBMHP-6 precursor (BmLP6) was shown to interact with BmSP1. Yeast two-hybrid experiments confirmed the interaction between BmSP1 and BmLP6. The results obtained in this study will be helpful for further study of the functions of BmSP1 and BmLP6 in the regulatory network of silkworm development and innate immunity.
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Affiliation(s)
- Ruilin Li
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, China
- Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, China
| | - Congwu Hu
- 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 Research Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | | | - Kun Gao
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, China
- Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, China
| | - Xijie Guo
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, China
- Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, China
| | - Chengxiang Hou
- 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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Wang W, Wang X, Li X, Pu Q, Luo C, Xu L, Peng X, Liu S. Genetic Manipulation of MicroRNAs in the Silk Gland of Silkworm, Bombyx Mori. Biol Proced Online 2019; 21:16. [PMID: 31427900 PMCID: PMC6694536 DOI: 10.1186/s12575-019-0102-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Accepted: 06/07/2019] [Indexed: 02/07/2023] Open
Abstract
Background MicroRNAs (miRNAs) are a class of non-coding RNAs with important post-transcriptional regulatory functions. To reveal the function of miRNAs in vivo, the critical step is to change their expression levels in the tissues or organs. In this work, we explored the application of several important genetic techniques in altering the expression of silk gland-specific miR-274 of silkworm (Bombyx mori). Results Injection of synthesized microRNA mimics and antagomirs exerted no effect on the expression of miR-274 in the silk gland, miR-274 sponge specifically absorbed miR-274 and down-regulated its expression, transgenic overexpression of miR-274 precursor significantly up-regulated miR-274, and finally tissue-specific CRISPR/Cas9 system achieved deletion of miR-274. Conclusions A practical technical system was established for studying the functions of miRNAs in silk gland of Bombyx mori. Our research provides methodological support for the functional study of miRNAs and other noncoding RNAs in the silk gland and more organs in other species.
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Affiliation(s)
- Wei Wang
- 1State Key Laboratory of Silkworm Genome Biology,Biological Science Research Center, Southwest University, Chongqing, 400715 People's Republic of China.,2Chongqing Key Laboratory of Sericultural Science, Chongqing Engineering and Technology Research Center for Novel Silk Materials, Southwest University, Chongqing, 400715 People's Republic of China
| | - Xinran Wang
- 1State Key Laboratory of Silkworm Genome Biology,Biological Science Research Center, Southwest University, Chongqing, 400715 People's Republic of China.,2Chongqing Key Laboratory of Sericultural Science, Chongqing Engineering and Technology Research Center for Novel Silk Materials, Southwest University, Chongqing, 400715 People's Republic of China
| | - Xuemei Li
- 1State Key Laboratory of Silkworm Genome Biology,Biological Science Research Center, Southwest University, Chongqing, 400715 People's Republic of China.,2Chongqing Key Laboratory of Sericultural Science, Chongqing Engineering and Technology Research Center for Novel Silk Materials, Southwest University, Chongqing, 400715 People's Republic of China
| | - Qian Pu
- 1State Key Laboratory of Silkworm Genome Biology,Biological Science Research Center, Southwest University, Chongqing, 400715 People's Republic of China.,2Chongqing Key Laboratory of Sericultural Science, Chongqing Engineering and Technology Research Center for Novel Silk Materials, Southwest University, Chongqing, 400715 People's Republic of China
| | - Chengyi Luo
- 1State Key Laboratory of Silkworm Genome Biology,Biological Science Research Center, Southwest University, Chongqing, 400715 People's Republic of China.,2Chongqing Key Laboratory of Sericultural Science, Chongqing Engineering and Technology Research Center for Novel Silk Materials, Southwest University, Chongqing, 400715 People's Republic of China
| | - Lili Xu
- 1State Key Laboratory of Silkworm Genome Biology,Biological Science Research Center, Southwest University, Chongqing, 400715 People's Republic of China.,2Chongqing Key Laboratory of Sericultural Science, Chongqing Engineering and Technology Research Center for Novel Silk Materials, Southwest University, Chongqing, 400715 People's Republic of China
| | - Xinyue Peng
- 1State Key Laboratory of Silkworm Genome Biology,Biological Science Research Center, Southwest University, Chongqing, 400715 People's Republic of China.,2Chongqing Key Laboratory of Sericultural Science, Chongqing Engineering and Technology Research Center for Novel Silk Materials, Southwest University, Chongqing, 400715 People's Republic of China
| | - Shiping Liu
- 1State Key Laboratory of Silkworm Genome Biology,Biological Science Research Center, Southwest University, Chongqing, 400715 People's Republic of China.,2Chongqing Key Laboratory of Sericultural Science, Chongqing Engineering and Technology Research Center for Novel Silk Materials, Southwest University, Chongqing, 400715 People's Republic of China
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Dong Z, Qin Q, Hu Z, Chen P, Huang L, Zhang X, Tian T, Lu C, Pan M. Construction of a One-Vector Multiplex CRISPR/Cas9 Editing System to Inhibit Nucleopolyhedrovirus Replication in Silkworms. Virol Sin 2019; 34:444-453. [PMID: 31218589 DOI: 10.1007/s12250-019-00121-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Accepted: 03/25/2019] [Indexed: 12/15/2022] Open
Abstract
Recently the developed single guide (sg)RNA-guided clustered regularly interspaced short palindromic repeats/associated protein 9 nuclease (CRISPR/Cas9) technology has opened a new avenue for antiviral therapy. The CRISPR/Cas9 system uniquely allows targeting of multiple genome sites simultaneously. However, there are relatively few applications of CRISPR/Cas9 multigene editing to target insect viruses. To address the need for sustained delivery of a multiplex CRISPR/Cas9-based genome-editing vehicle against insect viruses, we developed a one-vector (pSL1180-Cas9-U6-sgRNA) system that expresses multiple sgRNA and Cas9 protein to excise Bombyx mori nucleopolyhedrovirus (BmNPV) in insect cells. We screened the immediate-early-1 gene (ie-1), the major envelope glycoprotein gene (gp64), and the late expression factor gene (lef-11), and identified multiple sgRNA editing sites through flow cytometry and viral DNA replication analysis. In addition, we constructed a multiplex editing vector (PSL1180-Cas9-sgIE1-sgLEF11-sgGP64, sgMultiple) to efficiently regulate multiplex gene-editing and inhibit BmNPV replication after viral infection. This is the first report of the application of a multiplex CRISPR/Cas9 system to inhibit insect virus replication. This multiplex system can significantly enhance the potential of CRISPR/Cas9-based multiplex genome engineering in insect virus.
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Affiliation(s)
- Zhanqi Dong
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, 400716, China
| | - Qi Qin
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, 400716, China
| | - Zhigang Hu
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, 400716, China
| | - Peng Chen
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, 400716, China
| | - Liang Huang
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, 400716, China
| | - Xinling Zhang
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, 400716, China
| | - Ting Tian
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, 400716, China
| | - Cheng Lu
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, 400716, China.
- Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture, Southwest University, Chongqing, 400716, China.
| | - Minhui Pan
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, 400716, China.
- Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture, Southwest University, Chongqing, 400716, China.
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