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Chaudhary S, Ali Z, Mahfouz M. Molecular farming for sustainable production of clinical-grade antimicrobial peptides. PLANT BIOTECHNOLOGY JOURNAL 2024; 22:2282-2300. [PMID: 38685599 PMCID: PMC11258990 DOI: 10.1111/pbi.14344] [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: 10/20/2023] [Revised: 02/26/2024] [Accepted: 03/11/2024] [Indexed: 05/02/2024]
Abstract
Antimicrobial peptides (AMPs) are emerging as next-generation therapeutics due to their broad-spectrum activity against drug-resistant bacterial strains and their ability to eradicate biofilms, modulate immune responses, exert anti-inflammatory effects and improve disease management. They are produced through solid-phase peptide synthesis or in bacterial or yeast cells. Molecular farming, i.e. the production of biologics in plants, offers a low-cost, non-toxic, scalable and simple alternative platform to produce AMPs at a sustainable cost. In this review, we discuss the advantages of molecular farming for producing clinical-grade AMPs, advances in expression and purification systems and the cost advantage for industrial-scale production. We further review how 'green' production is filling the sustainability gap, streamlining patent and regulatory approvals and enabling successful clinical translations that demonstrate the future potential of AMPs produced by molecular farming. Finally, we discuss the regulatory challenges that need to be addressed to fully realize the potential of molecular farming-based AMP production for therapeutics.
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Affiliation(s)
- Shahid Chaudhary
- Laboratory for Genome Engineering and Synthetic Biology, Division of Biological Sciences4700 King Abdullah University of Science and TechnologyThuwalSaudi Arabia
| | - Zahir Ali
- Laboratory for Genome Engineering and Synthetic Biology, Division of Biological Sciences4700 King Abdullah University of Science and TechnologyThuwalSaudi Arabia
| | - Magdy Mahfouz
- Laboratory for Genome Engineering and Synthetic Biology, Division of Biological Sciences4700 King Abdullah University of Science and TechnologyThuwalSaudi Arabia
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2
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Jahandideh M, Rakhshandehroo F, Safarnejad MR, Sahraroo A, Elbeaino T. In planta expression of specific single chain fragment antibody (scFv) against nucleocapsid protein of fig mosaic virus (FMV). J Virol Methods 2024; 326:114904. [PMID: 38368949 DOI: 10.1016/j.jviromet.2024.114904] [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: 10/20/2023] [Revised: 01/30/2024] [Accepted: 02/15/2024] [Indexed: 02/20/2024]
Abstract
Fig mosaic virus (FMV) is recognized as the main viral agent associated with the mosaic disease (MD) of fig trees (Ficus carica). Due to its worldwide occurrence, FMV represents the most significant global threat to the production of fig fruit. A disease management strategy against the MD in fig orchards has never been effective; and therefore, expression of recombinant antibody in plant cells could provide an alternative approach to suppress FMV infections. In this study we focused on expressing a specific recombinant antibody, a single-chain variable fragment (scFv), targeting the nucleocapsid protein (NP) of FMV in planta. To accomplish this objective, we inserted the scFv gene into a plant expression vector and conducted transient expression in leaves of Nicotiana tabacum cv. Samson plants. The construct was transiently expressed in tobacco plants by agroinfiltration, and antibody of the anticipated size was detected by immunoblotting. The produced plantibody was then assessed for specificity using ELISA and confirmed by Western blot analysis. In this study, the plantibody developed against FMV could be considered as a potential countermeasure to the infection by conferring resistance to MD.
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Affiliation(s)
- Mahsa Jahandideh
- Department of Plant Protection, College of Agricultural Sciences and Food Industries, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Farshad Rakhshandehroo
- Department of Plant Protection, College of Agricultural Sciences and Food Industries, Science and Research Branch, Islamic Azad University, Tehran, Iran.
| | - Mohammad Reza Safarnejad
- Department of Plant Viruses, Iranian Research Institute of Plant Protection, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran
| | - Amir Sahraroo
- Department of Horticultural sciences, Faculty of Agricultural Science, Guilan University, Rasht, Iran
| | - Toufic Elbeaino
- Istituto Agronomico Mediterraneo di Bari (CIHEAM-IAMB), Via Ceglie 9, Valenzano, Bari 70010, Italy
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3
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Poudel SB, Bhattarai G, Kwon TH, Lee JC. Biopotentials of Collagen Scaffold Impregnated with Plant-Cell-Derived Epidermal Growth Factor in Defective Bone Healing. MATERIALS (BASEL, SWITZERLAND) 2023; 16:ma16093335. [PMID: 37176216 PMCID: PMC10179640 DOI: 10.3390/ma16093335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 04/20/2023] [Accepted: 04/21/2023] [Indexed: 05/15/2023]
Abstract
The combination of scaffolds with recombinant human epidermal growth factor (rhEGF) protein can enhance defective bone healing via synergistic activation to stimulate cellular growth, differentiation, and survival. We examined the biopotentials of an rhEGF-loaded absorbable collagen scaffold (ACS) using a mouse model of calvarial defects, in which the rhEGF was produced from a plant cell suspension culture system because of several systemic advantages. Here, we showed a successful and large-scale production of plant-cell-derived rhEGF protein (p-rhEGF) by introducing an expression vector that cloned with its cDNA under the control of rice α-amylase 3D promoter into rice calli (Oryza sativa L. cv. Dongjin). Implantation with p-rhEGF (5 μg)-loaded ACSs into critical-sized calvarial defects enhanced new bone formation and the expression of osteoblast-specific markers in the defected regions greater than implantation with ACSs alone did. The potency of p-rhEGF-induced bone healing was comparable with that of Escherichia coli-derived rhEGF protein. The exogenous addition of p-rhEGF increased the proliferation of human periodontal ligament cells and augmented the induction of interleukin 8, bone morphogenetic protein 2, and vascular endothelial growth factor in the cells. Collectively, this study demonstrates the successful and convenient production of p-rhEGF, as well as its potency to enhance ACS-mediated bone regeneration by activating cellular responses that are required for wound healing.
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Affiliation(s)
- Sher Bahadur Poudel
- Department of Molecular Pathobiology, New York University College of Dentistry, New York, NY 10010, USA
| | - Govinda Bhattarai
- Cluster for Craniofacial Development & Regeneration Research, Institute of Oral Biosciences, Jeonbuk National University, Jeonju 54896, Republic of Korea
| | - Tae-Ho Kwon
- Natural Bio-Materials Inc., Iksan 54631, Republic of Korea
| | - Jeong-Chae Lee
- Cluster for Craniofacial Development & Regeneration Research, Institute of Oral Biosciences, Jeonbuk National University, Jeonju 54896, Republic of Korea
- Research Center of Bioactive Materials, Jeonbuk National University, Jeonju 54896, Republic of Korea
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4
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Chaudhary S, Ali Z, Tehseen M, Haney EF, Pantoja-Angles A, Alshehri S, Wang T, Clancy GJ, Ayach M, Hauser C, Hong PY, Hamdan SM, Hancock REW, Mahfouz M. Efficient in planta production of amidated antimicrobial peptides that are active against drug-resistant ESKAPE pathogens. Nat Commun 2023; 14:1464. [PMID: 36928189 PMCID: PMC10020429 DOI: 10.1038/s41467-023-37003-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 02/27/2023] [Indexed: 03/18/2023] Open
Abstract
Antimicrobial peptides (AMPs) are promising next-generation antibiotics that can be used to combat drug-resistant pathogens. However, the high cost involved in AMP synthesis and their short plasma half-life render their clinical translation a challenge. To address these shortcomings, we report efficient production of bioactive amidated AMPs by transient expression of glycine-extended AMPs in Nicotiana benthamiana line expressing the mammalian enzyme peptidylglycine α-amidating mono-oxygenase (PAM). Cationic AMPs accumulate to substantial levels in PAM transgenic plants compare to nontransgenic N. benthamiana. Moreover, AMPs purified from plants exhibit robust killing activity against six highly virulent and antibiotic resistant ESKAPE pathogens, prevent their biofilm formation, analogous to their synthetic counterparts and synergize with antibiotics. We also perform a base case techno-economic analysis of our platform, demonstrating the potential economic advantages and scalability for industrial use. Taken together, our experimental data and techno-economic analysis demonstrate the potential use of plant chassis for large-scale production of clinical-grade AMPs.
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Affiliation(s)
- Shahid Chaudhary
- Laboratory for Genome Engineering and Synthetic Biology, Division of Biological Sciences, 4700 King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Zahir Ali
- Laboratory for Genome Engineering and Synthetic Biology, Division of Biological Sciences, 4700 King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Muhammad Tehseen
- Laboratory of DNA Replication and Recombination, Division of Biological Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Evan F Haney
- Centre for Microbial Diseases and Immunity Research, Department of Microbiology and Immunology, University of British Columbia, Vancouver, BC, Canada
| | - Aarón Pantoja-Angles
- Laboratory for Genome Engineering and Synthetic Biology, Division of Biological Sciences, 4700 King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Salwa Alshehri
- Laboratory for Nanomedicine, Division of Biological and Environmental Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
- Biochemistry Department, Faculty of Science, University of Jeddah, Jeddah, 21577, Saudi Arabia
| | - Tiannyu Wang
- Water Desalination and Reuse Center, Division of Biological Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Gerard J Clancy
- Analytical Chemistry Core Laboratory, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Maya Ayach
- Imaging & Characterization Core Laboratory, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Charlotte Hauser
- Laboratory for Nanomedicine, Division of Biological and Environmental Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Pei-Ying Hong
- Water Desalination and Reuse Center, Division of Biological Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Samir M Hamdan
- Laboratory of DNA Replication and Recombination, Division of Biological Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Robert E W Hancock
- Centre for Microbial Diseases and Immunity Research, Department of Microbiology and Immunology, University of British Columbia, Vancouver, BC, Canada
| | - Magdy Mahfouz
- Laboratory for Genome Engineering and Synthetic Biology, Division of Biological Sciences, 4700 King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia.
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5
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Vianna GR, Cunha NB, Rech EL. Soybean seed protein storage vacuoles for expression of recombinant molecules. CURRENT OPINION IN PLANT BIOLOGY 2023; 71:102331. [PMID: 36603392 DOI: 10.1016/j.pbi.2022.102331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 11/22/2022] [Accepted: 12/01/2022] [Indexed: 06/17/2023]
Abstract
Soybean is one of the most important protein sources for human consumption and livestock feed. Soy production also allows the biosynthesis of edible oils, biodiesel, and biofertilizers. With the advent of modern agricultural biotechnology, soybean plants have also converted into bioreactors of therapeutic proteins and industrial enzymes. Soybean's characteristics, such as protein storage vacuoles (PSVs) and other unique organelles, allow the plant to be exploited as an accumulator of heterologous proteins under high stability and scalability conditions, and that maintains its basic functions. This review reports the main aspects of heterologous protein accumulation in soybean PSVs.
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Affiliation(s)
- G R Vianna
- Embrapa Genetic Resources and Biotechnology/National Institute of Science and Technology in Synthetic Biology, Brasília, Distrito Federal, 70770-917, Brazil
| | - N B Cunha
- University of Brasília (UnB), Faculty of Agronomy and Veterinary Medicine (FAV), Campus Universitario Darcy Ribeiro, Brasília, Distrito Federal, 70910-900, Brazil; Catholic University of Brasília (UCB), Postgraduate Program in Genomic Sciences and Biotechnology, Brasília, SGAN 916 Modulo B, Bloco C, 70.790-160, Brazil
| | - E L Rech
- Embrapa Genetic Resources and Biotechnology/National Institute of Science and Technology in Synthetic Biology, Brasília, Distrito Federal, 70770-917, Brazil.
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6
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Shi Y, Habibi P, Haq ANU, Saeed M, Gulghutay Amjad N, Khan I. Seed-Based System for Cost-Effective Production of Vaccine Against Chronic Respiratory Disease in Chickens. Mol Biotechnol 2023; 65:570-580. [PMID: 36087216 PMCID: PMC9463513 DOI: 10.1007/s12033-022-00554-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Accepted: 08/22/2022] [Indexed: 11/29/2022]
Abstract
The production of vaccines in plant cells, termed plant-made pharmaceuticals or molecular farming, is a promising technology for scalable production. Compared to mammalian cell lines, like Chinese Hamster Ovary (CHO) or bacterial cells, plants can be grown with less cost on a large scale to make vaccines antigens and therapeutics affordable and accessible worldwide. An innovative application of this alternative system is the production of vaccines in edible tissues that can be consumed orally to deliver protein antigen without any further processing. In this project, we report stable expression of amino acid sequences corresponding to the TM-1 gene of Mycoplasma gallisepticum as a candidate vaccine antigen against Chronic Respiratory Disease (CRD) in chickens using wheat seed's tissues as a production host. Molecular and immunoblotting analysis confirmed the ubiquitous expression of a recombinant 41.8-kDa protein with an expression level of 1.03 mg/g dry weight in the endosperm tissues. When orally delivered, the plant-made vaccine was effective in terms of developing antibody response in animal model i.e., chicken without any detectable weight loss. Two doses of orally delivered plant-made TM-1 vaccine candidate elicited the immune response and protective effect against MG virus challenge at the level comparable to commercially available inactivated vaccine against CRD. Our study demonstrates that plant-made vaccines are not only safe but also scalable and cost-effective with prolonged stability at room temperature.
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Affiliation(s)
- Yao Shi
- Department of Basic and Translational Sciences, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA USA
| | - Peyman Habibi
- Department of Pathology and Laboratory Medicine and Center for Cellular Immunotherapies, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104 USA
| | - Ayesha Naveed Ul Haq
- SA-Center for Interdisciplinary Research in Basic Sciences, International Islamic University, Islamabad, Pakistan
| | - Madiha Saeed
- SA-Center for Interdisciplinary Research in Basic Sciences, International Islamic University, Islamabad, Pakistan
| | - Namra Gulghutay Amjad
- Department of Community Medicine and Public Health, Khyber Girls Medical College, KPK, Peshawar, Pakistan
| | - Imran Khan
- Department of Chemical Engineering, School of Engineering, University of California, Davis, Davis, CA, USA.
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7
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Current Strategies to Improve Yield of Recombinant Protein Production in Rice Suspension Cells. Processes (Basel) 2022. [DOI: 10.3390/pr10061120] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
A plant cell-based recombinant glucocerebrosidase was approved by the FDA in 2012 for the treatment of human inherited Gaucher disease, indicating that plant suspension cells have advantages in biosafety and a low production cost as a commercial pharmaceutical recombinant protein expression system. A low allergenic rice suspension cell-based recombinant protein expression system controlled by the αAmy3/RAmy3D promoter has been shown to result in relatively high protein yields in plant cell-based systems. Although several recombinant proteins have been produced in rice suspension cell-based systems, yields must be improved to compete with the current commercial protein expression systems. Different strategies were performed and showed successful improvements in recombinant protein yields in this rice system. The review updates and highlights strategies for potential improvements of the αAmy3-based rice suspension cell-based system.
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8
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Zhu Q, Tan J, Liu YG. Molecular farming using transgenic rice endosperm. Trends Biotechnol 2022; 40:1248-1260. [PMID: 35562237 DOI: 10.1016/j.tibtech.2022.04.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 04/01/2022] [Accepted: 04/07/2022] [Indexed: 01/05/2023]
Abstract
Plant expression platforms are low-cost, scalable, safe, and environmentally friendly systems for the production of recombinant proteins and bioactive metabolites. Rice (Oryza sativa L.) endosperm is an ideal bioreactor for the production and storage of high-value active substances, including pharmaceutical proteins, oral vaccines, vitamins, and nutraceuticals such as flavonoids and carotenoids. Here, we explore the use of molecular farming from producing medicines to developing functional food crops (biofortification). We review recent progress in producing pharmaceutical proteins and bioactive substances in rice endosperm and compare this platform with other plant expression systems. We describe how rice endosperm could be modified to design metabolic pathways and express and store stable products and discuss the factors restricting the commercialization of transgenic rice products and future prospects.
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Affiliation(s)
- Qinlong Zhu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Sciences, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China.
| | - Jiantao Tan
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Sciences, South China Agricultural University, Guangzhou 510642, China
| | - Yao-Guang Liu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Sciences, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
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9
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Development of spirulina for the manufacture and oral delivery of protein therapeutics. Nat Biotechnol 2022; 40:956-964. [PMID: 35314813 PMCID: PMC9200632 DOI: 10.1038/s41587-022-01249-7] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Accepted: 02/03/2022] [Indexed: 12/21/2022]
Abstract
The use of the edible photosynthetic cyanobacterium Arthrospira platensis (spirulina) as a biomanufacturing platform has been limited by a lack of genetic tools. Here we report genetic engineering methods for stable, high-level expression of bioactive proteins in spirulina, including large-scale, indoor cultivation and downstream processing methods. Following targeted integration of exogenous genes into the spirulina chromosome (chr), encoded protein biopharmaceuticals can represent as much as 15% of total biomass, require no purification before oral delivery and are stable without refrigeration and protected during gastric transit when encapsulated within dry spirulina. Oral delivery of a spirulina-expressed antibody targeting campylobacter-a major cause of infant mortality in the developing world-prevents disease in mice, and a phase 1 clinical trial demonstrated safety for human administration. Spirulina provides an advantageous system for the manufacture of orally delivered therapeutic proteins by combining the safety of a food-based production host with the accessible genetic manipulation and high productivity of microbial platforms.
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10
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Mardanova ES, Kotlyarov RY, Ravin NV. High-Yield Production of Receptor Binding Domain of SARS-CoV-2 Linked to Bacterial Flagellin in Plants Using Self-Replicating Viral Vector pEff. PLANTS (BASEL, SWITZERLAND) 2021; 10:plants10122682. [PMID: 34961153 PMCID: PMC8708900 DOI: 10.3390/plants10122682] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 11/30/2021] [Accepted: 12/03/2021] [Indexed: 05/07/2023]
Abstract
The development of recombinant vaccines against SARS-CoV-2 is required to eliminate the COVID-19 pandemic. We reported the expression of a recombinant protein Flg-RBD comprising receptor binding domain of SARS-CoV-2 spike glycoprotein (RBD) fused to flagellin of Salmonella typhimurium (Flg), known as mucosal adjuvant, in Nicotiana benthamiana plants. The fusion protein, targeted to the cytosol, was transiently expressed using the self-replicating vector pEff based on potato virus X genome. The recombinant protein Flg-RBD was expressed at the level of about 110-140 μg per gram of fresh leaf tissue and was found to be insoluble. The fusion protein was purified using metal affinity chromatography under denaturing conditions. To increase the yield of Flg-RBD, the flow-through fraction obtained after loading of the protein sample on the Ni-NTA resin was re-loaded on the sorbent. The yield of Flg-RBD after purification reached about 100 μg per gram of fresh leaf tissue and the purified protein remained soluble after dialysis. The control flagellin was expressed in a soluble form and its yield after purification was about 300 μg per gram of fresh leaf biomass. Plant-produced Flg-RBD protein could be further used for the development of intranasal recombinant mucosal vaccines against COVID-19.
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11
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Kaur M, Manchanda P, Kalia A, Ahmed FK, Nepovimova E, Kuca K, Abd-Elsalam KA. Agroinfiltration Mediated Scalable Transient Gene Expression in Genome Edited Crop Plants. Int J Mol Sci 2021; 22:10882. [PMID: 34639221 PMCID: PMC8509792 DOI: 10.3390/ijms221910882] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 09/23/2021] [Accepted: 10/03/2021] [Indexed: 02/07/2023] Open
Abstract
Agrobacterium-mediated transformation is one of the most commonly used genetic transformation method that involves transfer of foreign genes into target plants. Agroinfiltration, an Agrobacterium-based transient approach and the breakthrough discovery of CRISPR/Cas9 holds trending stature to perform targeted and efficient genome editing (GE). The predominant feature of agroinfiltration is the abolishment of Transfer-DNA (T-DNA) integration event to ensure fewer biosafety and regulatory issues besides showcasing the capability to perform transcription and translation efficiently, hence providing a large picture through pilot-scale experiment via transient approach. The direct delivery of recombinant agrobacteria through this approach carrying CRISPR/Cas cassette to knockout the expression of the target gene in the intercellular tissue spaces by physical or vacuum infiltration can simplify the targeted site modification. This review aims to provide information on Agrobacterium-mediated transformation and implementation of agroinfiltration with GE to widen the horizon of targeted genome editing before a stable genome editing approach. This will ease the screening of numerous functions of genes in different plant species with wider applicability in future.
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Affiliation(s)
- Maninder Kaur
- School of Agricultural Biotechnology, College of Agriculture, Punjab Agricultural University, Ludhiana, Punjab 141004, India;
| | - Pooja Manchanda
- School of Agricultural Biotechnology, College of Agriculture, Punjab Agricultural University, Ludhiana, Punjab 141004, India;
| | - Anu Kalia
- Electron Microscopy and Nanoscience Laboratory, Department of Soil Science, College of Agriculture, Punjab Agricultural University, Ludhiana, Punjab 141004, India;
| | - Farah K. Ahmed
- Biotechnology English Program, Faculty of Agriculture, Cairo University, Giza 12613, Egypt;
| | - Eugenie Nepovimova
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, 50003 Hradec Kralove, Czech Republic;
| | - Kamil Kuca
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, 50003 Hradec Kralove, Czech Republic;
- Biomedical Research Center, University Hospital Hradec Kralove, 50005 Hradec Kralove, Czech Republic
| | - Kamel A. Abd-Elsalam
- Plant Pathology Research Institute, Agricultural Research Center (ARC), 9-Gamaa St., Giza 12619, Egypt;
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12
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Yang J, Xun H, Niu L, He H, Cheng Y, Zhong X, Zhao Q, Xing G, Liu J, Yang X. Elastin-like polypeptide and γ-zein fusions significantly increase recombinant protein accumulation in soybean seeds. Transgenic Res 2021; 30:675-686. [PMID: 33963986 DOI: 10.1007/s11248-021-00258-7] [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: 10/09/2020] [Accepted: 05/03/2021] [Indexed: 11/30/2022]
Abstract
Soybean seeds are an ideal host for the production of recombinant proteins because of their high content of proteins, long-term stability of seed proteins under ambient conditions, and easy establishment of efficient purification protocols. In this study, a polypeptide fusion strategy was applied to explore the capacity of elastin-like polypeptide (ELP) and γ-zein fusions in increasing the accumulation of the recombinant protein in soybean seeds. Transgenic soybean plants were generated to express the γ-zein- or ELP-fused green fluorescent protein (GFP) under the control of the soybean seed-specific promoter of β-conglycinin alpha subunit (BCSP). Significant differences were observed in the accumulation of zein-GFP and GFP-ELP from that of the unfused GFP in transgenic soybean seeds based on the total soluble protein (TSP), despite the low-copy of T-DNA insertions and similar expression at the mRNA levels in selected transgenic lines. The average levels of zein-GFP and GFP-ELP accumulated in immature seeds of these transgenic lines were 0.99% and 0.29% TSP, respectively, compared with 0.07% TSP of the unfused GFP. In mature soybean seeds, the accumulation of zein-GFP and GFP-ELP proteins was 1.8% and 0.84% TSP, an increase of 3.91- and 1.82-fold, respectively, in comparison with that of the unfused GFP (0.46% TSP). Confocal laser scanning analysis showed that both zein-GFP and GFP-ELP were abundantly deposited in many small spherical particles of transgenic seeds, while there were fewer such florescence signals in the same cellular compartments of the unfused GFP-expressing seeds. Despite increased recombinant protein accumulation, there were no significant changes in the total protein and oil content in seeds between the transgenic and non-transformed plants, suggesting the possible presence of threshold limits of total protein accumulation in transgenic soybean seeds. Overall, our results indicate that γ-zein and ELP fusions significantly increased the accumulation of the recombinant protein, but exhibited no significant influence on the total protein and oil content in soybean seeds.
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Affiliation(s)
- Jing Yang
- Jilin Provincial Key Laboratory of Agricultural Biotechnology, Jilin Academy of Agricultural Sciences, Changchun, 130033, China
| | - HongWei Xun
- Jilin Provincial Key Laboratory of Agricultural Biotechnology, Jilin Academy of Agricultural Sciences, Changchun, 130033, China
| | - Lu Niu
- Jilin Provincial Key Laboratory of Agricultural Biotechnology, Jilin Academy of Agricultural Sciences, Changchun, 130033, China
| | - Hongli He
- Jilin Normal University, Siping, 136000, China
| | | | - Xiaofang Zhong
- Jilin Provincial Key Laboratory of Agricultural Biotechnology, Jilin Academy of Agricultural Sciences, Changchun, 130033, China
| | - Qianqian Zhao
- Jilin Provincial Key Laboratory of Agricultural Biotechnology, Jilin Academy of Agricultural Sciences, Changchun, 130033, China
| | - Guojie Xing
- Jilin Provincial Key Laboratory of Agricultural Biotechnology, Jilin Academy of Agricultural Sciences, Changchun, 130033, China
| | | | - Xiangdong Yang
- Jilin Provincial Key Laboratory of Agricultural Biotechnology, Jilin Academy of Agricultural Sciences, Changchun, 130033, China.
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13
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Mardanova ES, Ravin NV. Transient expression of recombinant proteins in plants using potato virus X based vectors. Methods Enzymol 2021; 660:205-222. [PMID: 34742389 DOI: 10.1016/bs.mie.2021.05.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Plants become a promising biofactory for the large-scale production of recombinant proteins due to low cost, scalability, and safety. Agroinfiltration of plant leaves with a plant viral vector carrying a gene of interest is a rapid and efficient method for protein production in plants. Currently this method is in use for producing a wide range of proteins for multiple applications, including vaccine antigens, antibodies, and protein nanoparticles such as virus-like particles. A number of pharmaceutical proteins produced by transient expression are currently in clinical development. Here, we describe potato virus X based vector pEff-GFP enabling fast and high-level expression of recombinant proteins in Nicotiana benthamiana plants. The pEff vector provides green fluorescent protein expression levels of up to 30% of total soluble protein (about 1mg per g of fresh leaf tissue) and was successfully applied for the production of the immunogens of potential clinical interest.
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Affiliation(s)
- Eugenia S Mardanova
- Institute of Bioengineering, Research Center of Biotechnology of the Russian Academy of Sciences, Moscow, Russia
| | - Nikolai V Ravin
- Institute of Bioengineering, Research Center of Biotechnology of the Russian Academy of Sciences, Moscow, Russia.
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Takaiwa F, Wakasa Y, Ozawa K, Sekikawa K. Improvement of production yield and extraction efficacy of recombinant protein by high endosperm-specific expression along with simultaneous suppression of major seed storage proteins. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2021; 302:110692. [PMID: 33288006 DOI: 10.1016/j.plantsci.2020.110692] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 09/20/2020] [Accepted: 09/24/2020] [Indexed: 06/12/2023]
Abstract
Human transforming growth factor-β1 (hTGF-β1) was produced in transgenic rice seeds. To boost its production yield and to extract it simply, it was expressed under the control of seed-specific promoters along with the simultaneous suppression of endogenous seed storage proteins (SSPs) through RNA interference (RNAi). When driven by the 26 kDa α-globulin endosperm-specific promoter, it accumulated up to the markedly high level of 452 μg/grain. However, exchange with other seed-specific promoters such as 18 kDa oleosin and AGPase promoters resulted in remarkable reduction to the levels of 62 and 48 μg/grain, respectively, even though endogenous SSPs were reduced to the similar level. These production levels were almost similar to those (42 and 108 μg/grain) produced by the glutelin GluB-1 endosperm-specific promoter and the maize ubiquitin constitutive promoter without reduction of SSPs, respectively. When extracted from these transgenic rice seeds with reduced SSPs with various buffers, it could be solubilized with denaturant solution, which was in remarkable contrast with those without depressed SSPs which required further supplementation of reducing agent for extraction. This difference was associated with the fact that it was mainly deposited to ER-derived structures though self-aggregation or interaction with remaining prolamin via intermolecular disulfide bonds.
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Affiliation(s)
- Fumio Takaiwa
- PrevenTec inc. Ami-chuo 3-21-1, Inashiki, Ibaraki 300-0395, Japan; Institute of Agrobiological Sciences, National Agriculture and Food Research Organization Kannondai 3-1-3, Tsukuba, Ibaraki 305-8604, Japan.
| | - Yuhya Wakasa
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization Kannondai 3-1-3, Tsukuba, Ibaraki 305-8604, Japan
| | - Kenjirou Ozawa
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization Kannondai 3-1-3, Tsukuba, Ibaraki 305-8604, Japan
| | - Kenji Sekikawa
- PrevenTec inc. Ami-chuo 3-21-1, Inashiki, Ibaraki 300-0395, Japan
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Sethi L, Kumari K, Dey N. Engineering of Plants for Efficient Production of Therapeutics. Mol Biotechnol 2021; 63:1125-1137. [PMID: 34398446 PMCID: PMC8365136 DOI: 10.1007/s12033-021-00381-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Accepted: 08/10/2021] [Indexed: 02/07/2023]
Abstract
Plants are becoming useful platforms for recombinant protein production at present time. With the advancement of efficient molecular tools of genomics, proteomics, plants are now being used as a biofactory for production of different life saving therapeutics. Plant-based biofactory is an established production system with the benefits of cost-effectiveness, high scalability, rapid production, enabling post-translational modification, and being devoid of harmful pathogens contamination. This review introduces the main challenges faced by plant expression system: post-translational modifications, protein stability, biosafety concern and regulation. It also summarizes essential factors to be considered in engineering plants, including plant expression system, promoter, post-translational modification, codon optimization, and fusion tags, protein stabilization and purification, subcellular targeting, and making vaccines in an edible way. This review will be beneficial and informative to scholars and readers in the field of plant biotechnology.
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Affiliation(s)
- Lini Sethi
- Division of Plant and Microbial Biotechnology, Institute of Life Sciences, NALCO Square, Chandrasekharpur, Bhubaneswar, Odisha 751023 India ,Regional Centre for Biotechnology, National Capital Region Biotech Science Cluster, Faridabad, Haryana (NCR Delhi) 121001 India
| | - Khushbu Kumari
- Division of Plant and Microbial Biotechnology, Institute of Life Sciences, NALCO Square, Chandrasekharpur, Bhubaneswar, Odisha 751023 India ,Regional Centre for Biotechnology, National Capital Region Biotech Science Cluster, Faridabad, Haryana (NCR Delhi) 121001 India
| | - Nrisingha Dey
- Division of Plant and Microbial Biotechnology, Institute of Life Sciences, NALCO Square, Chandrasekharpur, Bhubaneswar, Odisha 751023 India
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Xia P, Hu W, Liang T, Yang D, Liang Z. An attempt to establish an Agrobacterium-mediated transient expression system in medicinal plants. PROTOPLASMA 2020; 257:1497-1505. [PMID: 32564134 DOI: 10.1007/s00709-020-01524-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Accepted: 06/12/2020] [Indexed: 06/11/2023]
Abstract
Genetic transformation has always been an important method for studying medical plant secondary metabolic regulation, among which stable transformation has a good reproducibility. However, it was time-consuming to obtain a stable transformed hairy root or transgenic plants, which was difficult to satisfy the great demand of researches on medical plant secondary metabolism-related genes. Moreover, Agrobacterium tumefaciens-mediated transient transformation has been extensively applied in studies of functional genes because of its simpleness, low cost, and short period. However, presently, researches on medical plant functional genes commonly used stable genetic transformation and some high-cost and high-difficulty transient transformation methods, such as gene gun and protoplast transformation. Thus, in this study, we selected the seedlings of Nicotiana benthamiana, Salvia miltiorrhiza, and Prunella vulgaris as the experimental material, with the methods of Agrobacterium tumefaciens injection, fast Agrobacterium-mediated seedling transformation (FAST), and FAST and mechanical damage. The results demonstrated that the injection transient transformation system of pCAMBIA1301 vector mediated by A. tumefaciens and the transient transformation of seedling system were not established in S. miltiorrhiza. In addition, the instantaneous transformation system of N. benthamiana and P. vulgaris seedlings was basically set up by FAST method. Besides, using the method of FAST and mechanical damage, the transient genetic transformation system of P. vulgaris seedlings was established for the first time. A. tumefaciens-mediated transient transformation of seedlings with pEAQ vectors provided an effective way and reference for the further study of functional genes of the medicinal plants N. benthamiana and P. vulgaris.
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Affiliation(s)
- Pengguo Xia
- Laboratory of Plant Secondary Metabolism and Regulation of Zhejiang Province, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, 310018, China.
- State Key Laboratory of Membrane Biology, Innovation Center for Structural Biology, School of Life Sciences, Tsinghua University, Beijing, 100084, China.
| | - Wanying Hu
- Laboratory of Plant Secondary Metabolism and Regulation of Zhejiang Province, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Tongyao Liang
- Laboratory of Plant Secondary Metabolism and Regulation of Zhejiang Province, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Dongfeng Yang
- Laboratory of Plant Secondary Metabolism and Regulation of Zhejiang Province, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Zongsuo Liang
- Laboratory of Plant Secondary Metabolism and Regulation of Zhejiang Province, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, 310018, China.
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Plant-Produced Monoclonal Antibody as Immunotherapy for Cancer. BIOMED RESEARCH INTERNATIONAL 2020; 2020:3038564. [PMID: 32908881 PMCID: PMC7468595 DOI: 10.1155/2020/3038564] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Revised: 07/27/2020] [Accepted: 08/10/2020] [Indexed: 11/30/2022]
Abstract
Plant-based products have expanded to include cancer immunotherapy, which has made great strides over recent years. Plants are considered inexpensive and facile production platforms for recombinant monoclonal antibody (mAb) due to the latest advancements and diversification of transgenic techniques. Current human biologics, including those based on mAbs produced by fermentation technologies using primarily mammalian cell cultures, have been replaced by plant-produced mAbs, which are cost effective, more scalable, speedy, versatile, and safer. Moreover, the use of animals for antibody production is always a question of ethical unambiguity, and the suitability of animal models for predicting the immunogenicity of therapeutic mAbs in humans and transposition of the immunogenic potential of therapeutic antibodies in animals to the human situation has no scientific rationale. Quite a few plant-based mAbs are approved for the treatment of cancer, ranging from tumors to hematological malignancies. This review focuses on the cutting-edge approaches for using plant-derived mAbs to suppress or prevent cancers. It also discusses the avenues taken to prevent infection by oncogenic viruses, solid tumors, lymphomas, and other cancerous conditions using mAbs. The review emphasizes the use of a plant-derived monoclonal antibody as a premier platform to combat cancer.
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Lessard PA, Parker M, Bougri O, Shen B, Samoylov V, Broomhead J, Li X, Raab RM. Improved performance of Eimeria-infected chickens fed corn expressing a single-domain antibody against interleukin-10. NATURE FOOD 2020; 1:119-126. [PMID: 37127989 DOI: 10.1038/s43016-020-0029-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Accepted: 01/08/2020] [Indexed: 05/03/2023]
Abstract
Antimicrobial resistance is a significant challenge for human and animal health, and developing effective antibiotic-free treatments is a strategy to help mitigate microbial resistance. The global poultry industry faces growing challenges from Eimeria-induced coccidiosis, a serious enteric disease of chickens that currently requires treatment using ionophore antibiotics. Eimeria stimulates interleukin-10 (IL-10) expression in the small intestine and caecum of infected chickens, suppressing their immune response and facilitating disease progression. Single-domain antibodies raised from llamas immunized with chicken IL-10 (cIL-10) were developed that bind cIL-10 in vitro, block cIL-10 receptor binding and induce interferon gamma (IFN-γ) secretion from cIL-10-repressed primary chicken splenocytes. Single-domain antibodies expressed in transgenic corn demonstrated significant accumulation in phenotypically normal plants. When fed to Eimeria-challenged chickens, the transgenic corn significantly improved body weight gain (equal to that of salinomycin-treated animals), normalized the feed conversion ratio (to the same level as uninfected control animals), lowered E. tenella lesion scores to those of salinomycin-treated control animals, and reduced oocyst counts below those of infected untreated control animals. Here, we propose that transgenic corn may have a role in reducing the use of antibiotics in poultry production and maintaining animal health and productivity, and may contribute to efforts against global antimicrobial resistance.
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Affiliation(s)
| | | | | | - Binzhang Shen
- Agrivida, Inc., Woburn, MA, USA
- Unum Therapeutics, Cambridge, MA, USA
| | | | - Jon Broomhead
- Agrivida, Inc., Woburn, MA, USA
- Perstop US, St Louis, MO, USA
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Muñoz-Talavera A, Gómez-Lim MÁ, Salazar-Olivo LA, Reinders J, Lim K, Escobedo-Moratilla A, López-Calleja AC, Islas-Carbajal MC, Rincón-Sánchez AR. Expression of the Biologically Active Insulin Analog SCI-57 in Nicotiana Benthamiana. Front Pharmacol 2019; 10:1335. [PMID: 31798448 PMCID: PMC6868099 DOI: 10.3389/fphar.2019.01335] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Accepted: 10/18/2019] [Indexed: 11/13/2022] Open
Abstract
Diabetes mellitus is a growing problem worldwide; however, only 23% of low-income countries have access to insulin, and ironically it costs higher in such countries than high-income ones. Therefore, new strategies for insulin and insulin analogs production are urgently required to improve low-cost access to therapeutic products, so as to contain the diabetes epidemic. SCI-57 is an insulin analog with a greater affinity for the insulin receptor and lower thermal degradation than native insulin. It also shows native mitogenicity and insulin-like biological activity. In this work, SCI-57 was transiently expressed in the Nicotiana benthamiana (Nb) plant, and we also evaluated some of its relevant biological effects. An expression plasmid was engineered to translate an N-terminal ubiquitin and C-terminal endoplasmic reticulum-targeting signal KDEL, in order to increase protein expression and stability. Likewise, the effect of co-expression of influenza M2 ion channel (M2) on the expression of insulin analog SCI-57 (SCI-57/M2) was evaluated. Although using M2 increases yield, it tends to alter the SCI-57 amino acid sequence, possibly promoting the formation of oligomers. Purification of SCI-57 was achieved by FPLC cation exchange and ultrafiltration of N. benthamiana leaf extract (NLE). SCI-57 exerts its anti-diabetic properties by stimulating glucose uptake in adipocytes, without affecting the lipid accumulation process. Expression of the insulin analog in agroinfiltrated plants was confirmed by SDS-PAGE, RP-HPLC, and MS. Proteome changes related to the expression of heterologous proteins on N. benthamiana were not observed; up-regulated proteins were related to the agroinfiltration process. Our results demonstrate the potential for producing a biologically active insulin analog, SCI-57, by transient expression in Nb.
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Affiliation(s)
- Adriana Muñoz-Talavera
- Department of Physiology, Institute of Experimental and Clinical Therapeutics, University Center for Health Sciences, University of Guadalajara, Guadalajara, Mexico
| | - Miguel Ángel Gómez-Lim
- Department of Genetic Engineering, Center for Research and Advanced Studies of the National Polytechnic Institute, Irapuato, Mexico
| | - Luis A Salazar-Olivo
- Division of Molecular Biology, Institute for Scientific and Technological Research of San Luis Potosí, San Luis Potosí, Mexico
| | - Jörg Reinders
- Scientific Support Unit Analytical Chemistry, Leibniz Research Centre for Working Environment and Human Factors, Dortmund, Germany
| | - Katharina Lim
- Institute of Functional Genomics, University of Regensburg, Regensburg, Germany
| | - Abraham Escobedo-Moratilla
- CONACYT-Consortium for Research, Innovation, and Development of the Drylands (CIIDZA), IPICYT, San Luis Potosí, Mexico
| | - Alberto Cristian López-Calleja
- Department of Genetic Engineering, Center for Research and Advanced Studies of the National Polytechnic Institute, Irapuato, Mexico
| | - María Cristina Islas-Carbajal
- Department of Physiology, Institute of Experimental and Clinical Therapeutics, University Center for Health Sciences, University of Guadalajara, Guadalajara, Mexico
| | - Ana Rosa Rincón-Sánchez
- Institute of Molecular Biology and Gene Therapy, Department of Molecular Biology and Genomic, University Center for Health Sciences, University of Guadalajara, Guadalajara, Mexico
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Katsarou K, Mitta E, Bardani E, Oulas A, Dadami E, Kalantidis K. DCL-suppressed Nicotiana benthamiana plants: valuable tools in research and biotechnology. MOLECULAR PLANT PATHOLOGY 2019; 20:432-446. [PMID: 30343523 PMCID: PMC6637889 DOI: 10.1111/mpp.12761] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
RNA silencing is a universal mechanism involved in development, epigenetic modifications and responses to biotic and abiotic stresses. The major components of this mechanism are Dicer-like (DCL), Argonaute (AGO) and RNA-dependent RNA polymerase (RDR) proteins. Understanding the role of each component is of great scientific and agronomic importance. Plants, including Nicotiana benthamiana, an important plant model, usually possess four DCL proteins, each of which has a specific role, namely being responsible for the production of an exclusive small RNA population. Here, we used RNA interference (RNAi) technology to target DCL proteins and produced single and combinatorial mutants for DCL. We analysed the phenotype for each DCL knockdown plant, together with the small RNA profile, by next-generation sequencing (NGS). We also investigated transgene expression, as well as viral infections, and were able to show that DCL suppression results in distinct developmental defects, changes in small RNA populations, increases in transgene expression and, finally, higher susceptibility in certain RNA viruses. Therefore, these plants are excellent tools for the following: (i) to study the role of DCL enzymes; (ii) to overexpress proteins of interest; and (iii) to understand the complex relationship between the plant silencing mechanism and biotic or abiotic stresses.
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Affiliation(s)
- Konstantina Katsarou
- Institute of Molecular Biology and BiotechnologyFoundation for Research and Technology‐HellasHeraklionGreece
| | - Eleni Mitta
- Department of BiologyUniversity of CreteHeraklionGreece
| | | | - Anastasis Oulas
- Institute of Molecular Biology and BiotechnologyFoundation for Research and Technology‐HellasHeraklionGreece
- Present address:
Bioinformatics Group, The Cyprus Institute of Neurology and GeneticsNicosiaCyprus
| | - Elena Dadami
- Department of BiologyUniversity of CreteHeraklionGreece
- Present address:
RLP AgroScience, AlPlantaNeustadtGermany
| | - Kriton Kalantidis
- Institute of Molecular Biology and BiotechnologyFoundation for Research and Technology‐HellasHeraklionGreece
- Department of BiologyUniversity of CreteHeraklionGreece
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Shkryl YN, Veremeichik GN, Kamenev DG, Gorpenchenko TY, Yugay YA, Mashtalyar DV, Nepomnyaschiy AV, Avramenko TV, Karabtsov AA, Ivanov VV, Bulgakov VP, Gnedenkov SV, Kulchin YN, Zhuravlev YN. Green synthesis of silver nanoparticles using transgenic Nicotiana tabacum callus culture expressing silicatein gene from marine sponge Latrunculia oparinae. ARTIFICIAL CELLS, NANOMEDICINE, AND BIOTECHNOLOGY 2018; 46:1646-1658. [PMID: 29022401 DOI: 10.1080/21691401.2017.1388248] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
In the present investigation, transgenic tobacco callus cultures and plants overexpressing the silicatein gene LoSilA1 from marine sponge Latrunculia oparinae were obtained and their bioreduction behaviour for the synthesis of silver nanoparticles (AgNPs) was studied. Synthesized nanoparticles were characterized using UV-visible spectroscopy, Fourier transformed infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), atomic flame electron microscopy (AFM) and nanoparticle tracking analysis (NTA). Our measurements showed that the reduction of silver nitrate produced spherical AgNPs with diameters in the range of 12-80 nm. The results of XRD analysis proved the crystal nature of the obtained AgNPs. FTIR analysis indicated that particles are reduced and stabilized in solution by the capping agent, which is likely to be proteins present in the callus extract. Interestingly, the reduction potential of LoSiLA1-transgenic callus line was increased three-fold compared with the empty vector-transformed calli. The synthesized AgNPs were found to exhibit strong antibacterial activity against Escherichia coli and Agrobacterium rhizogenes. The present study reports the first evidence for using genetic engineering for activation of the reduction potential of plant cells for synthesis of biocidal AgNPs.
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Affiliation(s)
- Yuri N Shkryl
- a Federal Scientific Centre of the East Asia Terrestrial Biodiversity, Department of Biotechnology, Far East Branch of Russian Academy of Sciences , Vladivostok , Russia
| | - Galina N Veremeichik
- a Federal Scientific Centre of the East Asia Terrestrial Biodiversity, Department of Biotechnology, Far East Branch of Russian Academy of Sciences , Vladivostok , Russia
| | - Dmitriy G Kamenev
- a Federal Scientific Centre of the East Asia Terrestrial Biodiversity, Department of Biotechnology, Far East Branch of Russian Academy of Sciences , Vladivostok , Russia
| | - Tatiana Y Gorpenchenko
- a Federal Scientific Centre of the East Asia Terrestrial Biodiversity, Department of Biotechnology, Far East Branch of Russian Academy of Sciences , Vladivostok , Russia
| | - Yulia A Yugay
- a Federal Scientific Centre of the East Asia Terrestrial Biodiversity, Department of Biotechnology, Far East Branch of Russian Academy of Sciences , Vladivostok , Russia
| | - Dmitriy V Mashtalyar
- b Institute of Chemistry , Far East Branch of Russian Academy of Sciences , Vladivostok , Russia
| | - Aleksander V Nepomnyaschiy
- c Institute for Automation and Control Processes , Far East Branch of Russian Academy of Science , Vladivostok , Russia
| | - Tatiana V Avramenko
- a Federal Scientific Centre of the East Asia Terrestrial Biodiversity, Department of Biotechnology, Far East Branch of Russian Academy of Sciences , Vladivostok , Russia
| | - Aleksandr A Karabtsov
- d Far East Geological Institute , Far East Branch of Russian Academy of Sciences , Vladivostok , Russia
| | - Vladimir V Ivanov
- d Far East Geological Institute , Far East Branch of Russian Academy of Sciences , Vladivostok , Russia
| | - Victor P Bulgakov
- a Federal Scientific Centre of the East Asia Terrestrial Biodiversity, Department of Biotechnology, Far East Branch of Russian Academy of Sciences , Vladivostok , Russia
- e Far Eastern Federal University, School of Natural Sciences , Vladivostok , Russia
| | - Sergey V Gnedenkov
- b Institute of Chemistry , Far East Branch of Russian Academy of Sciences , Vladivostok , Russia
| | - Yury N Kulchin
- c Institute for Automation and Control Processes , Far East Branch of Russian Academy of Science , Vladivostok , Russia
| | - Yury N Zhuravlev
- a Federal Scientific Centre of the East Asia Terrestrial Biodiversity, Department of Biotechnology, Far East Branch of Russian Academy of Sciences , Vladivostok , Russia
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Blokhina EA, Mardanova ES, Tsybalova LM, Ravin NV. Expression in Plants of a Recombinant Protein Based on Flagellin Linked to Conservative Fragments of M2 Protein and Hemagglutintin of Influenza Virus. APPL BIOCHEM MICRO+ 2018. [DOI: 10.1134/s0003683818040026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Norkunas K, Harding R, Dale J, Dugdale B. Improving agroinfiltration-based transient gene expression in Nicotiana benthamiana. PLANT METHODS 2018; 14:71. [PMID: 30159002 PMCID: PMC6109318 DOI: 10.1186/s13007-018-0343-2] [Citation(s) in RCA: 108] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Accepted: 08/21/2018] [Indexed: 05/02/2023]
Abstract
BACKGROUND Agroinfiltration is a simple and effective method of delivering transgenes into plant cells for the rapid production of recombinant proteins and has become the preferred transient expression platform to manufacture biologics in plants. Despite its popularity, few studies have sought to improve the efficiency of agroinfiltration to further increase protein yields. This study aimed to increase agroinfiltration-based transient gene expression in Nicotiana benthamiana by improving all levels of transgenesis. RESULTS Using the benchmark pEAQ-HT deconstructed virus vector system and the GUS reporter enzyme, physical, chemical, and molecular features were independently assessed for their ability to enhance Agrobacterium-mediated transformation and improve protein production capacities. Optimal Agrobacterium strain, cell culture density and co-cultivation time for maximal transient GUS (β-glucuronidase) expression were established. The effects of chemical additives in the liquid infiltration media were investigated and acetosyringone (500 μM), the antioxidant lipoic acid (5 μM), and a surfactant Pluronic F-68 (0.002%) were all shown to significantly increase transgene expression. Gene products known to suppress post-transcriptional gene silencing, activate cell cycle progression and confer stress tolerance were also assessed by co-expression. A simple 37 °C heat shock to plants, 1-2 days post infiltration, was shown to dramatically increase GUS reporter levels. By combining the most effective features, a dual vector delivery system was developed that provided approximately 3.5-fold higher levels of absolute GUS protein compared to the pEAQ-HT platform. CONCLUSIONS In this paper, different strategies were assessed and optimised with the aim of increasing plant-made protein capacities in Nicotiana benthamiana using agroinfiltration. Chemical additives, heat shock and the co-expression of genes known to suppress stress and gene silencing or stimulate cell cycle progression were all proven to increase agroinfiltration-based transient gene expression. By combining the most effective of these elements a novel expression platform was developed capable of producing plant-made protein at a significantly higher level than a benchmark hyper-expression system.
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Affiliation(s)
- Karlah Norkunas
- Centre for Tropical Crops and Biocommodities, Queensland University of Technology, Brisbane, QLD 4000 Australia
| | - Robert Harding
- Centre for Tropical Crops and Biocommodities, Queensland University of Technology, Brisbane, QLD 4000 Australia
| | - James Dale
- Centre for Tropical Crops and Biocommodities, Queensland University of Technology, Brisbane, QLD 4000 Australia
| | - Benjamin Dugdale
- Centre for Tropical Crops and Biocommodities, Queensland University of Technology, Brisbane, QLD 4000 Australia
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Protein-Based Bioproducts. PLANT BIOPRODUCTS 2018. [PMCID: PMC7121387 DOI: 10.1007/978-1-4939-8616-3_9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Plant proteins can be used for the production of a variety of bioproducts, including films and coatings, adhesives, fibres and pharmaceuticals. Proteins derived from plant production systems have many advantages: they are safe, low-cost and rapidly deployable, allow for simple product storage and result in proteins that are properly folded, assembled and post-translationally modified. While plant-derived protein-based products are natural, renewable, biodegradable and environmentally friendly, they tend to be lower in strength and elasticity than their corresponding synthetic products. Current research in this area is focused on overcoming challenges in plant production platforms related to yield, purification, regulatory approval and customer acceptance.
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Singh A, Kaur G, Singh S, Singh N, Saxena G, Verma PC. Recombinant Plant Engineering for Immunotherapeutic Production. CURRENT MOLECULAR BIOLOGY REPORTS 2017; 3:306-316. [PMID: 32226727 PMCID: PMC7099902 DOI: 10.1007/s40610-017-0078-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
PURPOSE OF REVIEW The requirement for large quantities of therapeutic proteins has fueled a great interest in the production of recombinant proteins in plant bioreactors. The vaccines and bio-therapeutic protein production in plants hold the promise of significantly lowering the cost of manufacturing life-saving drugs. This review will reflect the current status and challenges that the molecular farming platform faces becoming a strategic solution for the development of low-cost bio-therapeutics for developing countries. RECENT FINDINGS Different plant parts have been successfully identified as suitable expression systems for the commercial production of therapeutic proteins for some human and animal diseases ranging from common cold to AIDS. The processed therapeutics from such sources are devoid of any toxic components. The large-scale cultivation of these transgenic plants would be possible anywhere in the world including developing countries, which lack sophisticated drug manufacturing units. A couple of such commercially generated products have already hit the market with success. Newer methods using suitable plant viruses and recombinant gene expression systems have already been devised for producing therapeutic proteins and peptides. SUMMARY Plants are promising bio-factories for therapeutic protein production because of their several advantages over the other expression systems especially the advanced mechanisms for protein synthesis and post-translational modification which are very much similar to animal cells. Plant biotechnologists are much attracted to the bio-farming because of its flexibility, scalability, low manufacturing cost, as well as the lack of risk of toxic or pathogenic contamination. A number of projects on bio-farming are designed and are at various developmental stages but have not yet become available to the pharmaceutical industry. Therefore, we need further advancement in the optimization of lab protocols for up-scaling the production of such therapeutics at commercial level with a promise to offer their best clinical use.
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Affiliation(s)
- Ankit Singh
- Department of Biosciences, Jamia Millia Islamia University, New Delhi, 110025 India
| | - Gurminder Kaur
- Amity Institute of Biotechnology, Amity University Uttar Pradesh, Sector 125, Noida, 201303 India
| | - Sanchita Singh
- Genetics and Plant Molecular Biology Division, CSIR-National Botanical Research Institute, Rana Pratap Marg, Lucknow, U.P 226001 India
| | - Neetu Singh
- Instrumentation Research Facility, Jawahar Lal Nehru University, New Delhi, 110067 India
| | - Gauri Saxena
- Department of Botany, University of Lucknow, Lucknow, 226001 India
| | - Praveen C. Verma
- Genetics and Plant Molecular Biology Division, CSIR-National Botanical Research Institute, Rana Pratap Marg, Lucknow, U.P 226001 India
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Poudel SB, Bhattarai G, Kook SH, Shin YJ, Kwon TH, Lee SY, Lee JC. Recombinant human IGF-1 produced by transgenic plant cell suspension culture enhances new bone formation in calvarial defects. Growth Horm IGF Res 2017; 36:1-10. [PMID: 28787635 DOI: 10.1016/j.ghir.2017.07.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2017] [Revised: 07/20/2017] [Accepted: 07/28/2017] [Indexed: 12/16/2022]
Abstract
Transgenic plant cell suspension culture systems have been utilized extensively as convenient and efficient expression systems for the production of recombinant human growth factors. We produced insulin-like growth factor-1 using a plant suspension culture system (p-IGF-1) and explored its effect on new bone formation in calvarial defects. We also compared the bone regenerating potential of p-IGF-1 with commercial IGF-1 derived from Escherichia coli (e-IGF-1). Male C57BL/6 mice underwent calvarial defect surgery, and the defects were loaded with absorbable collagen sponge (ACS) only (ACS group) or ACS impregnated with 13μg of p-IGF-1 (p-IGF-1 group) or e-IGF-1 (e-IGF-1 group). The sham group did not receive any treatment with ACS or IGFs after surgery. Live μCT and histological analyses showed critical-sized bone defects in the sham group, whereas greater bone formation was observed in the p-IGF-1 and e-IGF-1 groups than the ACS group both 5 and 10weeks after surgery. Bone mineral density, bone volume, and bone surface values were also higher in the IGF groups than in the ACS group. Local delivery of p-IGF-1 or e-IGF-1 more greatly enhanced the expression of osteoblast-specific markers, but inhibited osteoclast formation, in newly formed bone compared with ACS control group. Specifically, p-IGF-1 treatment induced higher expression of alkaline phosphatase, osteocalcin, and osteopontin in the defect site than did e-IGF-1. Furthermore, treatment with p-IGF-1, but not e-IGF-1, increased mineralization of MC3T3-E1 cells, with the attendant upregulation of osteogenic marker genes. Collectively, our findings suggest the potential of p-IGF-1 in promoting the processes required for bone regeneration.
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Affiliation(s)
- Sher Bahadur Poudel
- Cluster for Craniofacial Development & Regeneration Research, Institute of Oral Biosciences, Chonbuk National University, Jeonju 54896, South Korea
| | - Govinda Bhattarai
- Cluster for Craniofacial Development & Regeneration Research, Institute of Oral Biosciences, Chonbuk National University, Jeonju 54896, South Korea
| | - Sung-Ho Kook
- Cluster for Craniofacial Development & Regeneration Research, Institute of Oral Biosciences, Chonbuk National University, Jeonju 54896, South Korea; Department of Bioactive Material Sciences, Research Center of Bioactive Materials, Chonbuk National University, Jeonju 54896, South Korea
| | - Yun-Ji Shin
- Natural Bio-Materials Inc., Iksan 54631, South Korea
| | - Tae-Ho Kwon
- Natural Bio-Materials Inc., Iksan 54631, South Korea
| | - Seung-Youp Lee
- Research Institute of Clinical Medicine of Chonbuk National University, Biomedical Research Institute of Chonbuk National University Hospital, Jeonju 54896, South Korea.
| | - Jeong-Chae Lee
- Cluster for Craniofacial Development & Regeneration Research, Institute of Oral Biosciences, Chonbuk National University, Jeonju 54896, South Korea; Department of Bioactive Material Sciences, Research Center of Bioactive Materials, Chonbuk National University, Jeonju 54896, South Korea.
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Shukla AA, Wolfe LS, Mostafa SS, Norman C. Evolving trends in mAb production processes. Bioeng Transl Med 2017; 2:58-69. [PMID: 29313024 PMCID: PMC5689530 DOI: 10.1002/btm2.10061] [Citation(s) in RCA: 138] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Revised: 02/24/2017] [Accepted: 03/06/2017] [Indexed: 12/30/2022] Open
Abstract
Monoclonal antibodies (mAbs) have established themselves as the leading biopharmaceutical therapeutic modality. The establishment of robust manufacturing platforms are key for antibody drug discovery efforts to seamlessly translate into clinical and commercial successes. Several drivers are influencing the design of mAb manufacturing processes. The advent of biosimilars is driving a desire to achieve lower cost of goods and globalize biologics manufacturing. High titers are now routinely achieved for mAbs in mammalian cell culture. These drivers have resulted in significant evolution in process platform approaches. Additionally, several new trends in bioprocessing have arisen in keeping with these needs. These include the consideration of alternative expression systems, continuous biomanufacturing and non-chromatographic separation formats. This paper discusses these drivers in the context of the kinds of changes they are driving in mAb production processes.
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Affiliation(s)
| | - Leslie S. Wolfe
- Process Development & ManufacturingKBI Biopharma Inc.DurhamNC27704
| | - Sigma S. Mostafa
- Process Development & ManufacturingKBI Biopharma Inc.DurhamNC27704
| | - Carnley Norman
- Process Development & ManufacturingKBI Biopharma Inc.DurhamNC27704
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Kosobokova EN, Piniugina MV, Kosorukov VS. Synthesis of biologically active human interferon α-2b in Nicotiana benthamiana. APPL BIOCHEM MICRO+ 2017. [DOI: 10.1134/s0003683816070048] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Silva JP, Appelberg R, Gama FM. Antimicrobial peptides as novel anti-tuberculosis therapeutics. Biotechnol Adv 2016; 34:924-940. [PMID: 27235189 DOI: 10.1016/j.biotechadv.2016.05.007] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Revised: 05/20/2016] [Accepted: 05/22/2016] [Indexed: 12/30/2022]
Abstract
Tuberculosis (TB), a disease caused by the human pathogen Mycobacterium tuberculosis, has recently joined HIV/AIDS as the world's deadliest infectious disease, affecting around 9.6 million people worldwide in 2014. Of those, about 1.2 million died from the disease. Resistance acquisition to existing antibiotics, with the subsequent emergence of Multi-Drug Resistant mycobacteria strains, together with an increasing economic burden, has urged the development of new anti-TB drugs. In this scope, antimicrobial peptides (AMPs), which are small, cationic and amphipathic peptides that make part of the innate immune system, now arise as promising candidates for TB treatment. In this review, we analyze the potential of AMPs for this application. We address the mechanisms of action, advantages and disadvantages over conventional antibiotics and how problems associated with its use may be overcome to boost their therapeutic potential. Additionally, we address the challenges of translational development from benchside to bedside, evaluate the current development pipeline and analyze the expected global impact from a socio-economic standpoint. The quest for more efficient and more compliant anti-TB drugs, associated with the great therapeutic potential of emerging AMPs and the rising peptide market, provide an optimal environment for the emergence of AMPs as promising therapies. Still, their pharmacological properties need to be enhanced and manufacturing-associated issues need to be addressed.
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Affiliation(s)
- João P Silva
- CEB - Centre of Biological Engineering, University of Minho, Campus de Gualtar, Braga 4710-057, Portugal.
| | - Rui Appelberg
- Department of Immunophysiology, University of Porto, 4050-313 Porto, Portugal
| | - Francisco Miguel Gama
- CEB - Centre of Biological Engineering, University of Minho, Campus de Gualtar, Braga 4710-057, Portugal.
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Molecular pharming - VLPs made in plants. Curr Opin Biotechnol 2016; 37:201-206. [PMID: 26773389 DOI: 10.1016/j.copbio.2015.12.007] [Citation(s) in RCA: 93] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 12/08/2015] [Accepted: 12/10/2015] [Indexed: 10/22/2022]
Abstract
Plant-based expression offers a safe, inexpensive and potentially limitless way to produce therapeutics in a quick and flexible manner. Plants require only simple inorganic nutrients, water, carbon dioxide and sunlight for efficient growth. Virus-like particles (VLPs) are convincing look-alikes of viruses but without carrying infectious genomic material. However, they can still elicit a very potent immune response which makes them ideal vaccine candidates. In this review the different methods of plant expression are described together with the most recent developments in the field of transiently-expressed plant-made VLPs.
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Łojewska E, Kowalczyk T, Olejniczak S, Sakowicz T. Extraction and purification methods in downstream processing of plant-based recombinant proteins. Protein Expr Purif 2015; 120:110-7. [PMID: 26742898 DOI: 10.1016/j.pep.2015.12.018] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Revised: 12/23/2015] [Accepted: 12/24/2015] [Indexed: 01/02/2023]
Abstract
During the last two decades, the production of recombinant proteins in plant systems has been receiving increased attention. Currently, proteins are considered as the most important biopharmaceuticals. However, high costs and problems with scaling up the purification and isolation processes make the production of plant-based recombinant proteins a challenging task. This paper presents a summary of the information regarding the downstream processing in plant systems and provides a comprehensible overview of its key steps, such as extraction and purification. To highlight the recent progress, mainly new developments in the downstream technology have been chosen. Furthermore, besides most popular techniques, alternative methods have been described.
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Affiliation(s)
- Ewelina Łojewska
- Department of Genetics and Plant Molecular Biology and Biotechnology, The University of Lodz, Banacha Street 12/16, 90-237 Lodz, Poland.
| | - Tomasz Kowalczyk
- Department of Genetics and Plant Molecular Biology and Biotechnology, The University of Lodz, Banacha Street 12/16, 90-237 Lodz, Poland
| | - Szymon Olejniczak
- Department of Genetics and Plant Molecular Biology and Biotechnology, The University of Lodz, Banacha Street 12/16, 90-237 Lodz, Poland
| | - Tomasz Sakowicz
- Department of Genetics and Plant Molecular Biology and Biotechnology, The University of Lodz, Banacha Street 12/16, 90-237 Lodz, Poland
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Peyret H, Lomonossoff GP. When plant virology met Agrobacterium: the rise of the deconstructed clones. PLANT BIOTECHNOLOGY JOURNAL 2015; 13:1121-35. [PMID: 26073158 PMCID: PMC4744784 DOI: 10.1111/pbi.12412] [Citation(s) in RCA: 105] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Revised: 05/05/2015] [Accepted: 05/06/2015] [Indexed: 05/20/2023]
Abstract
In the early days of molecular farming, Agrobacterium-mediated stable genetic transformation and the use of plant virus-based vectors were considered separate and competing technologies with complementary strengths and weaknesses. The demonstration that 'agroinfection' was the most efficient way of delivering virus-based vectors to their target plants blurred the distinction between the two technologies and permitted the development of 'deconstructed' vectors based on a number of plant viruses. The tobamoviruses, potexviruses, tobraviruses, geminiviruses and comoviruses have all been shown to be particularly well suited to the development of such vectors in dicotyledonous plants, while the development of equivalent vectors for use in monocotyledonous plants has lagged behind. Deconstructed viral vectors have proved extremely effective at the rapid, high-level production of a number of pharmaceutical proteins, some of which are currently undergoing clinical evaluation.
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Affiliation(s)
- Hadrien Peyret
- Department of Biological Chemistry, John Innes Centre, Norwich Research Park, Norwich, UK
| | - George P Lomonossoff
- Department of Biological Chemistry, John Innes Centre, Norwich Research Park, Norwich, UK
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Takaiwa F, Wakasa Y, Takagi H, Hiroi T. Rice seed for delivery of vaccines to gut mucosal immune tissues. PLANT BIOTECHNOLOGY JOURNAL 2015; 13:1041-55. [PMID: 26100952 DOI: 10.1111/pbi.12423] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Revised: 05/14/2015] [Accepted: 05/23/2015] [Indexed: 05/09/2023]
Abstract
Gut-associated lymphoid tissue (GALT) is the biggest lymphoid organ in the body. It plays a role in robust immune responses against invading pathogens while maintaining immune tolerance against nonpathogenic antigens such as foods. Oral vaccination can induce mucosal and systemic antigen-specific immune reactions and has several advantages including ease of administration, no requirement for purification and ease of scale-up of antigen. Thus far, taking advantage of these properties, various plant-based oral vaccines have been developed. Seeds provide a superior production platform over other plant tissues for oral vaccines; they offer a suitable delivery vehicle to GALT due to their high stability at room temperature, ample and stable deposition space, high expression level, and protection from digestive enzymes in gut. A rice seed production system for oral vaccines was established by combining stable deposition in protein bodies or protein storage vacuoles and enhanced endosperm-specific expression. Various types of rice-based oral vaccines for infectious and allergic diseases were generated. Efficacy of these rice-based vaccines was evaluated in animal models.
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Affiliation(s)
- Fumio Takaiwa
- Functional Crop Research and Development Unit, National Institute of Agrobiological Sciences, Tsukuba, Ibaraki, Japan
| | - Yuhya Wakasa
- Functional Crop Research and Development Unit, National Institute of Agrobiological Sciences, Tsukuba, Ibaraki, Japan
| | - Hidenori Takagi
- Functional Crop Research and Development Unit, National Institute of Agrobiological Sciences, Tsukuba, Ibaraki, Japan
| | - Takachika Hiroi
- Department of Allergy and Immunology, The Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
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35
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Mardanova ES, Kotlyarov RY, Kuprianov VV, Stepanova LA, Tsybalova LM, Lomonosoff GP, Ravin NV. Rapid high-yield expression of a candidate influenza vaccine based on the ectodomain of M2 protein linked to flagellin in plants using viral vectors. BMC Biotechnol 2015; 15:42. [PMID: 26022390 PMCID: PMC4446962 DOI: 10.1186/s12896-015-0164-6] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2015] [Accepted: 05/15/2015] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND The extracellular domain of matrix protein 2 (M2e) of influenza A virus is a promising target for the development of a universal vaccine against influenza because M2e sequences are highly conserved among human influenza A strains. However, native M2e is poorly immunogenic, but its immunogenicity can be increased by delivery in combination with adjuvants or carrier particles. It was previously shown that fusion of M2e to bacterial flagellin, the ligand for Toll-like receptor (TLR) 5 and powerful mucosal adjuvant, significantly increases the immunogenicity and protective capacity of M2e. RESULTS In this study, we report for the first time the transient expression in plants of a recombinant protein Flg-4M comprising flagellin of Salmonella typhimurium fused to four tandem copies of the M2e peptide. The chimeric construct was expressed in Nicotiana benthamiana plants using either the self-replicating potato virus X (PVX) based vector, pA7248AMV-GFP, or the cowpea mosaic virus (CPMV)-derived expression vector, pEAQ-HT. The highest expression level up to 30% of total soluble protein (about 1 mg/g of fresh leaf tissue) was achieved with the PVX-based expression system. Intranasal immunization of mice with purified Flg-4M protein induced high levels of M2e-specific serum antibodies and provided protection against lethal challenge with influenza virus. CONCLUSIONS This study confirms the usefulness of flagellin as a carrier of M2e and its relevance for the production of M2e-based candidate influenza vaccines in plants.
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Affiliation(s)
- Eugenia S Mardanova
- Centre 'Bioengineering', Russian Academy of Sciences, Prosp. 60-letya Oktyabrya, bld 7-1, 117312, Moscow, Russia.
| | - Roman Y Kotlyarov
- Centre 'Bioengineering', Russian Academy of Sciences, Prosp. 60-letya Oktyabrya, bld 7-1, 117312, Moscow, Russia.
| | - Victor V Kuprianov
- Centre 'Bioengineering', Russian Academy of Sciences, Prosp. 60-letya Oktyabrya, bld 7-1, 117312, Moscow, Russia.
| | - Liudmila A Stepanova
- Research Institute of Influenza, Russian Federation Ministry of Health, 15/17 Prof. Popova str., 197376, St. Petersburg, Russia.
| | - Liudmila M Tsybalova
- Research Institute of Influenza, Russian Federation Ministry of Health, 15/17 Prof. Popova str., 197376, St. Petersburg, Russia.
| | - George P Lomonosoff
- Department of Biological Chemistry, John Innes Centre, Norwich Research Park, NR4 7UH, Norwich, UK.
| | - Nikolai V Ravin
- Centre 'Bioengineering', Russian Academy of Sciences, Prosp. 60-letya Oktyabrya, bld 7-1, 117312, Moscow, Russia.
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36
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Chhapekar S, Raghavendrarao S, Pavan G, Ramakrishna C, Singh VK, Phanindra MLV, Dhandapani G, Sreevathsa R, Ananda Kumar P. Transgenic rice expressing a codon-modified synthetic CP4-EPSPS confers tolerance to broad-spectrum herbicide, glyphosate. PLANT CELL REPORTS 2015; 34:721-31. [PMID: 25537885 DOI: 10.1007/s00299-014-1732-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Revised: 11/25/2014] [Accepted: 12/10/2014] [Indexed: 05/09/2023]
Abstract
KEY MESSAGE Highly tolerant herbicide-resistant transgenic rice was developed by expressing codon-modified synthetic CP4--EPSPS. The transformants could tolerate up to 1% commercial glyphosate and has the potential to be used for DSR (direct-seeded rice). Weed infestation is one of the major biotic stress factors that is responsible for yield loss in direct-seeded rice (DSR). Herbicide-resistant rice has potential to improve the efficiency of weed management under DSR. Hence, the popular indica rice cultivar IR64, was genetically modified using Agrobacterium-mediated transformation with a codon-optimized CP4-EPSPS (5-enolpyruvylshikimate-3-phosphate synthase) gene, with N-terminal chloroplast targeting peptide from Petunia hybrida. Integration of the transgenes in the selected rice plants was confirmed by Southern hybridization and expression by Northern and herbicide tolerance assays. Transgenic plants showed EPSPS enzyme activity even at high concentrations of glyphosate, compared to untransformed control plants. T0, T1 and T2 lines were tested by herbicide bioassay and it was confirmed that the transgenic rice could tolerate up to 1% of commercial Roundup, which is five times more in dose used to kill weeds under field condition. All together, the transgenic rice plants developed in the present study could be used efficiently to overcome weed menace.
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Affiliation(s)
- Sushil Chhapekar
- National Research Centre on Plant Biotechnology, Lal Bahadur Shastri Building, Pusa Campus, New Delhi, 110012, India
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Liu F, Wang XD, Zhao YY, Li YJ, Liu YC, Sun J. Silencing the HaAK gene by transgenic plant-mediated RNAi impairs larval growth of Helicoverpa armigera. Int J Biol Sci 2015; 11:67-74. [PMID: 25552931 PMCID: PMC4278256 DOI: 10.7150/ijbs.10468] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2014] [Accepted: 11/05/2014] [Indexed: 11/24/2022] Open
Abstract
Insect pests have caused noticeable economic losses in agriculture, and the heavy use of insecticide to control pests not only brings the threats of insecticide resistance but also causes the great pollution to foods and the environment. Transgenic plants producing double-stranded RNA (dsRNA) directed against insect genes have been is currently developed for protection against insect pests. In this study, we used this technology to silence the arginine kinase (AK) gene of Helicoverpa armigera (HaAK), encoding a phosphotransferase that plays a critical role in cellular energy metabolism in invertebrate. Transgenic Arabidopsis plants producing HaAK dsRNA were generated by Agrobacterium-mediated transformation. The maximal mortality rate of 55% was reached when H. armigera first-instar larvae were fed with transgenic plant leaves for 3 days, which was dramatically higher than the 18% mortality recorded in the control group. Moreover, the ingestion of transgenic plants significantly retarded larval growth, and the transcript levels of HaAK were also knocked down by up to 52%. The feeding bioassays further indicated that the inhibition efficiency was correlated with the integrity and concentration of the produced HaAK dsRNA in transgenic plants. These results strongly show that the resistance to H. armigera was improved in transgenic Arabidopsis plants, suggesting that the RNAi targeting of AK has the potential for the control of insect pests.
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Affiliation(s)
| | | | | | | | | | - Jie Sun
- Key Laboratory of Oasis Eco-agriculture, College of Agriculture, Shihezi University, Shihezi 832003, China
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Kim NS, Yu HY, Chung ND, Kwon TH, Yang MS. High-level production of recombinant trypsin in transgenic rice cell culture through utilization of an alternative carbon source and recycling system. Enzyme Microb Technol 2014; 63:21-7. [DOI: 10.1016/j.enzmictec.2014.04.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Revised: 04/11/2014] [Accepted: 04/17/2014] [Indexed: 01/08/2023]
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Zhang Q, Yu H, Zhang FZ, Shen ZC. Expression and purification of recombinant human serum albumin from selectively terminable transgenic rice. J Zhejiang Univ Sci B 2014; 14:867-74. [PMID: 24101203 DOI: 10.1631/jzus.b1300090] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Human serum albumin (HSA) is widely utilized for medical purposes and biochemical research. Transgenic rice has proved to be an attractive bioreactor for mass production of recombinant HSA (rHSA). However, transgene spread is a major environmental and food safety concern for transgenic rice expressing proteins of medical value. This study aimed to develop a selectively terminable transgenic rice line expressing HSA in rice seeds, and a simple process for recovery and purification of rHSA for economical manufacture. An HSA expression cassette was inserted into a T-DNA vector encoding an RNA interference (RNAi) cassette suppressing the CYP81A6 gene. This gene detoxifies the herbicide bentazon and is linked to the 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS) cassette which confers glyphosate tolerance. ANX Sepharose Fast Flow (ANX FF) anion exchange chromatography coupled with Butyl Sepharose High Performance (Butyl HP) hydrophobic interaction chromatography was used to purify rHSA. A transgenic rice line, HSA-84, was obtained with stable expression of rHSA of up to 0.72% of the total dry weight of the dehusked rice seeds. This line also demonstrated high sensitivity to bentazon, and thus could be killed selectively by a spray of bentazon. A two-step chromatography purification scheme was established to purify the rHSA from rice seeds to a purity of 99% with a recovery of 62.4%. Results from mass spectrometry and N-terminus sequencing suggested that the purified rHSA was identical to natural plasma-derived HSA. This study provides an alternative strategy for large-scale production of HSA with a built-in transgene safety control mechanism.
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Affiliation(s)
- Qing Zhang
- State Key Laboratory of Rice Biology and Institute of Insect Sciences, Zhejiang University, Hangzhou 310058, China
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40
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Ou J, Guo Z, Shi J, Wang X, Liu J, Shi B, Guo F, Zhang C, Yang D. Transgenic rice endosperm as a bioreactor for molecular pharming. PLANT CELL REPORTS 2014; 33:585-594. [PMID: 24413763 DOI: 10.1007/s00299-013-1559-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2013] [Revised: 12/18/2013] [Accepted: 12/27/2013] [Indexed: 06/03/2023]
Abstract
Plants provide a promising expression platform for producing recombinant proteins with several advantages in terms of high expression level, lower production cost, scalability, and safety and environment-friendly. Molecular pharming has been recognized as an emerging industry with strategic importance that could play an important role in economic development and healthcare in China. Here, this review represents the significant advances using transgenic rice endosperm as bioreactor to produce various therapeutic recombinant proteins in transgenic rice endosperm and large-scale production of OsrHSA, and discusses the challenges to develop molecular pharming as an emerging industry with strategic importance in China.
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Affiliation(s)
- Jiquan Ou
- College of Life Sciences, State Key Laboratory of Hybrid Rice, Wuhan University, Wuhan, China
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41
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Abstract
Plants offer an attractive alternative for the production and delivery of subunit vaccines. Various antigens have been expressed at sufficiently high levels in plants to render vaccine development practical. An increasing body of evidence demonstrates that these plant-produced antigens can induce immunogenic responses and confer protection when delivered orally. Plant-based vaccines are relatively inexpensive to produce and production can be rapidly scaled up. There is also the potential for oral delivery of these vaccines, which can dramatically reduce distribution and delivery costs. Here we describe the technology to develop plant-based vaccines, review their advantages and discuss potential roadblocks and concerns over their commercialization. We also speculate on likely future developments with these vaccines and on their potential impact in the realms of human and animal health.
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Krishnan A, Woodard SL. TrypZean™: An Animal-Free Alternative to Bovine Trypsin. COMMERCIAL PLANT-PRODUCED RECOMBINANT PROTEIN PRODUCTS 2014. [DOI: 10.1007/978-3-662-43836-7_4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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43
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Leong T, Johansson L, Juliano P, McArthur SL, Manasseh R. Ultrasonic Separation of Particulate Fluids in Small and Large Scale Systems: A Review. Ind Eng Chem Res 2013. [DOI: 10.1021/ie402295r] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
| | | | - Pablo Juliano
- CSIRO Animal, Food and Health Sciences, 671 Sneydes Rd, Werribee, VIC 3030, Australia
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44
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Peyret H, Lomonossoff GP. The pEAQ vector series: the easy and quick way to produce recombinant proteins in plants. PLANT MOLECULAR BIOLOGY 2013; 83:51-8. [PMID: 23479085 DOI: 10.1007/s11103-013-0036-1] [Citation(s) in RCA: 111] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2012] [Accepted: 02/26/2013] [Indexed: 05/20/2023]
Abstract
The pEAQ vectors are a series of plasmids designed to allow easy and quick production of recombinant proteins in plants. Their main feature is the use of the Cowpea Mosaic Virus hypertranslational "CPMV-HT" expression system, which provides high yields of recombinant protein through extremely high translational efficiency without the need for viral replication. Since their creation, the pEAQ vectors have been used to produce a wide variety of proteins in plants. Viral proteins and Virus-Like Particles (VLPs) have been of particular interest, but other types of proteins including active enzymes have also been expressed. While the pEAQ vectors have mostly been used in a transient expression context, through agroinfiltration of leaves, they have also been shown to be suitable for the production of stably transformed lines of both cell cultures and whole plants. This paper looks back on the genesis of the pEAQ vectors and reviews their use so far.
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Affiliation(s)
- Hadrien Peyret
- Department of Biological Chemistry, John Innes Centre, Norwich Research Park, Colney, Norwich, NR4 7UH, UK.
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Kuo YC, Tan CC, Ku JT, Hsu WC, Su SC, Lu CA, Huang LF. Improving pharmaceutical protein production in Oryza sativa. Int J Mol Sci 2013; 14:8719-39. [PMID: 23615467 PMCID: PMC3676753 DOI: 10.3390/ijms14058719] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Revised: 04/14/2013] [Accepted: 04/15/2013] [Indexed: 01/01/2023] Open
Abstract
Application of plant expression systems in the production of recombinant proteins has several advantages, such as low maintenance cost, absence of human pathogens, and possession of complex post-translational glycosylation capabilities. Plants have been successfully used to produce recombinant cytokines, vaccines, antibodies, and other proteins, and rice (Oryza sativa) is a potential plant used as recombinant protein expression system. After successful transformation, transgenic rice cells can be either regenerated into whole plants or grown as cell cultures that can be upscaled into bioreactors. This review summarizes recent advances in the production of different recombinant protein produced in rice and describes their production methods as well as methods to improve protein yield and quality. Glycosylation and its impact in plant development and protein production are discussed, and several methods of improving yield and quality that have not been incorporated in rice expression systems are also proposed. Finally, different bioreactor options are explored and their advantages are analyzed.
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Affiliation(s)
- Yu-Chieh Kuo
- Graduate School of Biotechnology and Bioengineering, Yuan Ze University, 135 Yuan-Tung Road, Taoyuan 32003, Taiwan; E-Mails: (Y.-C.K.); (C.-C.T.); (J.-T.K.); (W.-C.H.); (S.-C.S.)
| | - Chia-Chun Tan
- Graduate School of Biotechnology and Bioengineering, Yuan Ze University, 135 Yuan-Tung Road, Taoyuan 32003, Taiwan; E-Mails: (Y.-C.K.); (C.-C.T.); (J.-T.K.); (W.-C.H.); (S.-C.S.)
- Department of Life Sciences, National Central University, 300, Jhongda Rd., Taoyuan 32001, Taiwan; E-Mail:
| | - Jung-Ting Ku
- Graduate School of Biotechnology and Bioengineering, Yuan Ze University, 135 Yuan-Tung Road, Taoyuan 32003, Taiwan; E-Mails: (Y.-C.K.); (C.-C.T.); (J.-T.K.); (W.-C.H.); (S.-C.S.)
| | - Wei-Cho Hsu
- Graduate School of Biotechnology and Bioengineering, Yuan Ze University, 135 Yuan-Tung Road, Taoyuan 32003, Taiwan; E-Mails: (Y.-C.K.); (C.-C.T.); (J.-T.K.); (W.-C.H.); (S.-C.S.)
| | - Sung-Chieh Su
- Graduate School of Biotechnology and Bioengineering, Yuan Ze University, 135 Yuan-Tung Road, Taoyuan 32003, Taiwan; E-Mails: (Y.-C.K.); (C.-C.T.); (J.-T.K.); (W.-C.H.); (S.-C.S.)
| | - Chung-An Lu
- Department of Life Sciences, National Central University, 300, Jhongda Rd., Taoyuan 32001, Taiwan; E-Mail:
| | - Li-Fen Huang
- Graduate School of Biotechnology and Bioengineering, Yuan Ze University, 135 Yuan-Tung Road, Taoyuan 32003, Taiwan; E-Mails: (Y.-C.K.); (C.-C.T.); (J.-T.K.); (W.-C.H.); (S.-C.S.)
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Zeitler B, Bernhard A, Meyer H, Sattler M, Koop HU, Lindermayr C. Production of a de-novo designed antimicrobial peptide in Nicotiana benthamiana. PLANT MOLECULAR BIOLOGY 2013; 81:259-72. [PMID: 23242916 DOI: 10.1007/s11103-012-9996-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2012] [Accepted: 12/06/2012] [Indexed: 06/01/2023]
Abstract
Antimicrobial peptides are important defense compounds of higher organisms that can be used as therapeutic agents against bacterial and/or viral infections. We designed several antimicrobial peptides containing hydrophobic and positively charged clusters that are active against plant and human pathogens. Especially peptide SP1-1 is highly active with a MIC value of 0.1 μg/ml against Xanthomonas vesicatoria, Pseudomonas corrugata and Pseudomonas syringae pv syringae. However, for commercial applications high amounts of peptide are necessary. The synthetic production of peptides is still quite expensive and, depending on the physico-chemical features, difficult. Therefore we developed a plant/tobacco mosaic virus-based production system following the 'full virus vector strategy' with the viral coat protein as fusion partner for the designed antimicrobial peptide. Infection of Nicotiana benthamiana plants with such recombinant virus resulted in production of huge amounts of virus particles presenting the peptides all over their surface. After extraction of recombinant virions, peptides were released from the coat protein by chemical cleavage. A protocol for purification of the antimicrobial peptides using high resolution chromatographic methods has been established. Finally, we yielded up to 0.025 mg of peptide per g of infected leaf biomass. Mass spectrometric and NMR analysis revealed that the in planta produced peptide differs from the synthetic version only in missing of N-terminal amidation. But its antimicrobial activity was in the range of the synthetic one. Taken together, we developed a protocol for plant-based production and purification of biologically active, hydrophobic and positively charged antimicrobial peptide.
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Affiliation(s)
- Benjamin Zeitler
- Institute of Biochemical Plant Pathology, Helmholtz Zentrum Munich, German Research Center for Environmental Health, 85764, Munich, Neuherberg, Germany
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Bresolin IRAP, Bresolin ITL, Miranda EA, Bueno SMA. Negative chromatography on agarose-TREN as a technique for purification of protein spiked in soybean seeds extract. Process Biochem 2012. [DOI: 10.1016/j.procbio.2012.08.023] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Cui L, Peng H, Zhang R, Chen Y, Zhao L, Tang K. Recombinant hHscFv-RC-RNase protein derived from transgenic tobacco acts as a bifunctional molecular complex against hepatocellular carcinoma. Biotechnol Appl Biochem 2012; 59:323-9. [PMID: 23586908 DOI: 10.1002/bab.1039] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2012] [Revised: 08/09/2012] [Indexed: 01/03/2023]
Abstract
Hepatocellular carcinoma (HCC) is a common clinical primary malignant tumor; however, efficient drugs for the treatment of HCC are still lacking at the present time. To develop a new approach for liver cancer therapy, we designed a chimeric gene (his-HR) encoding a single-chain variable fragment of human HAb25 (hHscFv) fused to a cytotoxic ribonuclease from Rana catesbeiana (RC-RNase) and expressed the corresponding fusion protein in transgenic tobacco (Nicotiana tabacum). Eleven positive transgenic plant lines were identified from 204 regenerated tobacco plants by PCR and Southern blot analysis, and the immunocompetence of the recombinant his-HR protein was confirmed by Western blotting. The expression levels of his-HR protein ranged from 0.75 to 1.99 µg/g in the fresh tobacco leaves. To characterize the bifunction of the expressed his-HR protein in tobacco, binding specificity and cell toxicity to several cell lines were examined by the indirect immunocytochemical streptavidin-biotin complex method and 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-2H-tetrazolium bromide assay. Data indicated that the his-HR protein had stronger specific binding affinity to HepG2 (human liver HCC cell line) than to the other tumor cell lines and normal liver cell line, and the capacity to kill the HCC cell lines SMMC7721 and HepG2 with an half maximal inhibiting concentration of 2.0 and 2.4 nM, respectively. The results suggest that recombinant bifunctional his-HR protein derived from transgenic plants may provide a novel strategy to treat HCC in the future.
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Affiliation(s)
- Lijie Cui
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, People's Republic of China
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Ahmad N, Michoux F, McCarthy J, Nixon PJ. Expression of the affinity tags, glutathione-S-transferase and maltose-binding protein, in tobacco chloroplasts. PLANTA 2012; 235:863-71. [PMID: 22237946 DOI: 10.1007/s00425-011-1584-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2011] [Accepted: 12/16/2011] [Indexed: 05/10/2023]
Abstract
Chloroplast transformation offers an exciting platform for the safe, inexpensive and large-scale production of recombinant proteins in plants. An important advantage for the isolation of proteins produced in the chloroplast would be the use of affinity tags for rapid purification by affinity chromatography. To date, only His-tags have been used. In this study, we have tested the feasibility of expressing two additional affinity tags: glutathione-S-transferase (GST) and a His-tagged derivative of the maltose-binding protein (His₆-MBP). By using the chloroplast 16S rRNA promoter and 5' untranslated region of phage T7 gene 10, GST and His₆-MBP were expressed in homoplastomic tobacco plants at approximately 7% and 37% of total soluble protein, respectively. GST could be purified by one-step-affinity purification using a glutathione column. Much better recoveries were obtained for His₆-MBP by using a twin-affinity purification procedure involving first immobilised nickel followed by binding to amylose. Interestingly, expression of GST led to cytoplasmic male sterility. Overall, our work expands the tools available for purifying recombinant proteins from the chloroplast.
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Affiliation(s)
- Niaz Ahmad
- Division of Molecular Biosciences, Wolfson Biochemistry Building, Imperial College London, South Kensington Campus, London SW7 2AZ, UK
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Khan MS, Nurjis F. Synthesis and expression of recombinant interferon alpha-5 gene in tobacco chloroplasts, a non-edible plant. Mol Biol Rep 2012; 39:4391-400. [PMID: 21938433 DOI: 10.1007/s11033-011-1227-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2010] [Accepted: 09/12/2011] [Indexed: 11/28/2022]
Abstract
The production of interferon alpha from microbial to mammalian expression system, have certain precincts in terms of cost, scalability, safety and authenticity. Modern biotechnology exploits transgenic crops to get large quantities of complex proteins in a cost-effective way. In order to overcome several challenges from biosafety point of view, the chloroplast transformation strategy is one of the best approaches since plastids are strictly maternally inherited in most of the cultivated species. In the present study the interferon alpha 5 gene was synthesized by using complex set of oligos. After sequence confirmation of the synthesized gene, the histidine residues along with the thrombin protease site were engineered upstream to the synthetic interferon alpha 5 gene. The recombinant fragment was then tethered with chloroplast light inducible promoter, rbcl followed by sequential cloning to develop chloroplast transformation vector to target the cassette into the inverted repeat region of plastome through two events of homologous recombination. The putative transgenic plants obtained through biolistic delivery method and as a result of antibiotic selection of bombarded leaves, were subjected to different rounds of selection and regeneration for homoplasmicity. The spectinomycin-resistant shoots were analyzed through Polymerase Chain Reaction and Sothern blotting. The expression of introduced synthetic genes was recorded using Enzyme Linked ImmunoSorbant Assay technique. It was experienced that mature leaves contained comparatively high levels of interferon compared to young and senescence leaves.
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Affiliation(s)
- Muhammad Sarwar Khan
- National Institute for Biotechnology and Genetic Engineering (NIBGE), Jhang Road, P. O. Box 577, Faisalabad, 38000, Pakistan.
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