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Yang Y, Zhang B, Yong J, James P, Xu ZP, Mitter N, Mahony TJ, Mody KT. The use of cell and larval assays to identify target genes for RNA interference-meditated control of the Australian sheep blowfly (Lucilia cuprina). PEST MANAGEMENT SCIENCE 2024; 80:4686-4698. [PMID: 38847522 DOI: 10.1002/ps.8190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 05/02/2024] [Accepted: 05/06/2024] [Indexed: 08/10/2024]
Abstract
BACKGROUND Flystrike, primarily caused by Lucilia cuprina, is a major health and welfare issue for sheep wool industries. Current chemical-based controls can have limited effectiveness due to the emergence of resistance in the parasite. RNA interference (RNAi), which uses double-stranded RNA (dsRNA) as a trigger molecule, has been successfully investigated for the development of innovative pest control strategies. Although RNAi offers great potential, the efficient identification, selection of target genes and delivery of dsRNA represent challenges to be overcome for the successful application of RNAi for control of L. cuprina. RESULTS A primary L. cuprina (blowfly) embryo cell line (BFEC) was established and confirmed as being derived from L. cuprina eggs by PCR and amplicon sequencing. The BFECs were successfully transfected with plasmids and messenger RNA (mRNA) expressing fluorescent reporter proteins and dsRNA using lipid-based transfection reagents. The transfection of dsRNA into BEFC in this study suggested decreased mRNA levels of target gene expression, which suggested RNAi-mediated knockdown. Three of the dsRNAs identified in this study resulted in reductions of in target gene mRNA levels in BFEC and loss of biological fitness by L. cuprina larvae in a feeding bioassay. CONCLUSION This study confirms that the novel BFEC cell line can be used to improve the efficacy of dsRNA-mediated screening to accelerate the identification of potential target genes in the development of RNAi mediated control approaches for L. cuprina. The research models established in this study are encouraging with respect to the use of RNAi as a blowfly control method, however further improvement and validation are required for field applicationsnot prefect, and could be ongoing developing. © 2024 The Author(s). Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
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Affiliation(s)
- Yunjia Yang
- Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, Brisbane, Australia
| | - Bing Zhang
- Department of Agriculture and Fisheries, Ecosciences Precinct (ESP), Brisbane, Australia
| | - Jiaxi Yong
- Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, Brisbane, Australia
| | - Peter James
- Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, Brisbane, Australia
| | - Zhi Ping Xu
- Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane, Australia
| | - Neena Mitter
- Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, Brisbane, Australia
| | - Timothy J Mahony
- Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, Brisbane, Australia
| | - Karishma T Mody
- Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, Brisbane, Australia
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RNA interference technology to improve the baculovirus-insect cell expression system. Biotechnol Adv 2018; 36:443-451. [DOI: 10.1016/j.biotechadv.2018.01.008] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Revised: 12/11/2017] [Accepted: 01/13/2018] [Indexed: 02/02/2023]
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Wu HC, Cha HJ, Bentley WE. Evaluating Baculovirus Infection Using Green Fluorescent Protein and Variants. Methods Mol Biol 2016; 1350:447-59. [PMID: 26820872 DOI: 10.1007/978-1-4939-3043-2_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
By use of a strategy incorporating the green fluorescent protein (GFP), facile and rapid monitoring and visualization of baculovirus infection in insect cells is possible in vivo. This chapter describes two techniques for simple determination of virus titer in the baculovirus expression system using GFP co-expression and rapid monitoring of Sf-9 insect cell infection using a combination of GFP and the early-to-late (ETL) promoter of the virus vector. Because of its early appearance, GFP, when placed under the control of ETL promoter, will facilitate vector construction, virus isolation, and titer determination.
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Affiliation(s)
- Hsuan-Chen Wu
- Department of Biochemical Science and Technology, National Taiwan University, Taipei, 10617, Taiwan.,Institute for Bioscience and Biotechnology Research, University of Maryland, College Park, MD, USA
| | - Hyung Joon Cha
- Department of Chemical Engineering, Pohang University of Science and Technology, Pohang, Korea
| | - William E Bentley
- Fischell Department of Bioengineering, University of Maryland, 2226 Jeong H. Kim Engineering Building, College Park, MD, 20742, USA. .,Institute for Bioscience and Biotechnology Research, University of Maryland, College Park, MD, USA.
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Abstract
A technique is described for synthesizing and transfecting double stranded RNA (dsRNA) for RNA interference (RNAi) in Sf-21 cell culture. Transfection with dsRNA only requires an hour and the cells usually recover within 12 h. Suggestions for designing dsRNA are included in the methods. Furthermore, websites are provided for rapid and effective dsRNA design. Three kits are essential for using the described methods: RNAqueous®-4PCR, Megascript™ T7 kit, and the Superscript™ III kit from Life Technologies, Inc.
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Wu HC, Hebert CG, Hung CW, Quan DN, Carter KK, Bentley WE. Tuning cell cycle of insect cells for enhanced protein production. J Biotechnol 2013; 168:55-61. [DOI: 10.1016/j.jbiotec.2013.08.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2013] [Revised: 08/06/2013] [Accepted: 08/13/2013] [Indexed: 01/29/2023]
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Lim YM, Yamasaki Y, Tsuda L. Ebi alleviates excessive growth signaling through multiple epigenetic functions inDrosophila. Genes Cells 2013; 18:909-20. [DOI: 10.1111/gtc.12088] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2013] [Accepted: 06/14/2013] [Indexed: 12/30/2022]
Affiliation(s)
- Young-Mi Lim
- Animal Models of Aging; National Center for Geriatrics and Gerontology; Obu Aichi 474-8511 Japan
| | - Yasutoyo Yamasaki
- Animal Models of Aging; National Center for Geriatrics and Gerontology; Obu Aichi 474-8511 Japan
| | - Leo Tsuda
- Animal Models of Aging; National Center for Geriatrics and Gerontology; Obu Aichi 474-8511 Japan
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RNAi for Insect Control: Current Perspective and Future Challenges. Appl Biochem Biotechnol 2013; 171:847-73. [DOI: 10.1007/s12010-013-0399-4] [Citation(s) in RCA: 93] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2013] [Accepted: 07/15/2013] [Indexed: 12/15/2022]
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Yu N, Christiaens O, Liu J, Niu J, Cappelle K, Caccia S, Huvenne H, Smagghe G. Delivery of dsRNA for RNAi in insects: an overview and future directions. INSECT SCIENCE 2013; 20:4-14. [PMID: 23955821 DOI: 10.1111/j.1744-7917.2012.01534.x] [Citation(s) in RCA: 103] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
RNA interference (RNAi) refers to the process of exogenous double-stranded RNA (dsRNA) silencing the complementary endogenous messenger RNA. RNAi has been widely used in entomological research for functional genomics in a variety of insects and its potential for RNAi-based pest control has been increasingly emphasized mainly because of its high specificity. This review focuses on the approaches of introducing dsRNA into insect cells or insect bodies to induce effective RNAi. The three most common delivery methods, namely, microinjection, ingestion, and soaking, are illustrated in details and their advantages and limitations are summarized for purpose of feasible RNAi research. In this review, we also briefly introduce the two possible dsRNA uptake machineries, other dsRNA delivery methods and the history of RNAi in entomology. Factors that influence the specificity and efficiency of RNAi such as transfection reagents, selection of dsRNA region, length, and stability of dsRNA in RNAi research are discussed for further studies.
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Affiliation(s)
- Na Yu
- Department of Crop Protection, Faculty of Bioscience Engineering, Ghent University, Coupure links 653, B-9000 Ghent, Belgium
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Hebert CG, Valdes JJ, Bentley WE. In vitro and in vivo RNA interference mediated suppression of Tn-caspase-1 for improved recombinant protein production in High Five cell culture with the baculovirus expression vector system. Biotechnol Bioeng 2009; 104:390-9. [PMID: 19557836 PMCID: PMC10960971 DOI: 10.1002/bit.22411] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/26/2024]
Abstract
While traditional metabolic engineering generally relies on the augmentation of specific genes and pathways in order to increase the yield of target proteins, the advent of RNA interference (RNAi) as a biological tool has given metabolic engineers another tool capable of rationally altering the host cell's biological landscape in order to achieve a specific goal. Given its broad applicability and potent specificity, RNAi has the ability to suppress genes whose function is contrary to the desired phenotype. In this study, RNAi has been used to increase recombinant protein production in a Trichoplusia ni derived cell line (BTI-TN-5B1-4-High Five) using the Baculovirus Expression Vector System. The specific target investigated is Tn-caspase-1, a protease involved in apoptosis that is likely the principal effector caspase present in T. ni cells. Experiments were first conducted using in vitro synthesized dsRNA to verify silencing of Tn-capase-1 and increased protein production as a result. Subsequent experiments were conducted using a cell line stably expressing in vivo RNAi in the form of an inverted repeat that results in a hairpin upon transcription. Using this construct, Tn-caspase-1 transcript levels were decreased by 50% and caspase enzymatic activity was decreased by 90%. This cell line, designated dsTncasp-2, demonstrates superior viability under low nutrient culture conditions and resulted in as much as two times the protein yield when compared to standard High Five cells.
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Affiliation(s)
- Colin G. Hebert
- Center for Biosystems Research, University of Maryland Biotechnology Institute, 5115 Plant Science Building, College Park, Maryland 20742; telephone: 301-405-4321; fax: 301-314-9075; e-mail:
- U.S. Army Edgewood Chemical Biological Center, Aberdeen Proving Ground, Maryland
- Fischell Department of Bioengineering, University of Maryland College Park, College Park, Maryland
| | - James J. Valdes
- U.S. Army Edgewood Chemical Biological Center, Aberdeen Proving Ground, Maryland
| | - William E. Bentley
- Center for Biosystems Research, University of Maryland Biotechnology Institute, 5115 Plant Science Building, College Park, Maryland 20742; telephone: 301-405-4321; fax: 301-314-9075; e-mail:
- Fischell Department of Bioengineering, University of Maryland College Park, College Park, Maryland
- Department of Chemical and Biomolecular Engineering, University of Maryland College Park, College Park, Maryland
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Hebert CG, Valdes JJ, Bentley WE. Investigating apoptosis: characterization and analysis of Trichoplusia ni-caspase-1 through overexpression and RNAi mediated silencing. INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY 2009; 39:113-124. [PMID: 19027856 DOI: 10.1016/j.ibmb.2008.10.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2008] [Revised: 10/15/2008] [Accepted: 10/21/2008] [Indexed: 05/27/2023]
Abstract
In both mammals and invertebrates, caspases play a critical role in apoptosis. Although Lepidopteron caspases have been widely studied in Spodoptera frugiperda cells, this is not the case for Trichoplusia ni cells, despite their widespread use for the production of recombinant protein and differences in baculovirus infectivity between the two species. We have cloned, expressed, purified and characterized Tn-caspase-1 in several situations: in its overexpression, in silencing via RNA interference (RNAi), during baculovirus infection, and in interactions with baculovirus protein p35. Overexpression can transiently increase caspase activity in T. ni (High Five) cells, while silencing results in a greater than 6-fold decrease. The reduction in caspase activity resulted in a reduction in the level of apoptosis, demonstrating the ability to affect apoptosis by modulating Tn-caspase-1. During baculovirus infection, caspase activity remains low until approximately 5 days post infection, at which point it increases dramatically, though not in those cells treated with dsRNA. Our results demonstrate that Tn-caspase-1 is presumably the principal effector caspase present in High Five cells, and that it is inhibited by baculovirus protein p35. Finally, our results indicate differences between RNAi and p35 as effector molecules for modulating caspase activity and apoptosis during cell growth and baculovirus infection.
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Affiliation(s)
- Colin G Hebert
- Center for Biosystems Research, University of Maryland Biotechnology Institute, 5115 Plant Science Building, College Park, MD 20742, USA
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Hebert CG, Valdes JJ, Bentley WE. Beyond silencing--engineering applications of RNA interference and antisense technology for altering cellular phenotype. Curr Opin Biotechnol 2008; 19:500-5. [PMID: 18760358 DOI: 10.1016/j.copbio.2008.08.006] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2008] [Revised: 07/25/2008] [Accepted: 08/01/2008] [Indexed: 01/02/2023]
Abstract
Since its discovery 10 years ago, RNA interference (RNAi) has evolved from a research tool into a powerful method for altering the phenotype of cells and whole organisms. Its near universal applicability coupled with its pinpoint accuracy for suppressing target proteins has altered the landscape of many fields. While there is considerable intellectual investment in therapeutics, its potential extends far beyond. In this review, we explore some of these emerging applications--metabolic engineering for enhancing recombinant protein production in both insect and mammalian cell systems, antisense technologies in bacteria as next generation antibiotics, and RNAi in plant biotechnology for improving productivity and nutritional value.
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Affiliation(s)
- Colin G Hebert
- Center for Biosystems Research, University of Maryland Biotechnology Institute, 5115 Plant Science Building, College Park, MD 20742, USA
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