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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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Kumar M, Kumari N, Thakur N, Bhatia SK, Saratale GD, Ghodake G, Mistry BM, Alavilli H, Kishor DS, Du X, Chung SM. A Comprehensive Overview on the Production of Vaccines in Plant-Based Expression Systems and the Scope of Plant Biotechnology to Combat against SARS-CoV-2 Virus Pandemics. PLANTS (BASEL, SWITZERLAND) 2021; 10:1213. [PMID: 34203729 PMCID: PMC8232254 DOI: 10.3390/plants10061213] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 05/28/2021] [Accepted: 06/12/2021] [Indexed: 12/23/2022]
Abstract
Many pathogenic viral pandemics have caused threats to global health; the COVID-19 pandemic is the latest. Its transmission is growing exponentially all around the globe, putting constraints on the health system worldwide. A novel coronavirus, severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2), causes this pandemic. Many candidate vaccines are available at this time for COVID-19, and there is a massive international race underway to procure as many vaccines as possible for each country. However, due to heavy global demand, there are strains in global vaccine production. The use of a plant biotechnology-based expression system for vaccine production also represents one part of this international effort, which is to develop plant-based heterologous expression systems, virus-like particles (VLPs)-vaccines, antiviral drugs, and a rapid supply of antigen-antibodies for detecting kits and plant origin bioactive compounds that boost the immunity and provide tolerance to fight against the virus infection. This review will look at the plant biotechnology platform that can provide the best fight against this global pandemic.
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Affiliation(s)
- Manu Kumar
- Department of Life Science, College of Life Science and Biotechnology, Dongguk University, Seoul 10326, Korea; (M.K.); (D.S.K.); (X.D.)
| | - Nisha Kumari
- Department of Radiology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul 03080, Korea;
| | - Nishant Thakur
- Department of Hospital Pathology, Yeouido St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, 10, 63-ro, Yeongdeungpo-gu, Seoul 07345, Korea;
| | - Shashi Kant Bhatia
- Department of Biological Engineering, College of Engineering, Konkuk University, 1 Hwayang-dong, Gwangjin-gu, Seoul 05029, Korea;
| | - Ganesh Dattatraya Saratale
- Department of Food Science and Biotechnology, Dongguk University, Seoul 10326, Korea; (G.D.S.); (B.M.M.)
| | - Gajanan Ghodake
- Department of Biological and Environmental Science, Dongguk University, Seoul 10326, Korea;
| | - Bhupendra M. Mistry
- Department of Food Science and Biotechnology, Dongguk University, Seoul 10326, Korea; (G.D.S.); (B.M.M.)
| | - Hemasundar Alavilli
- Department of Biochemistry and Molecular Biology, College of Medicine, Korea University, Seoul 02841, Korea;
| | - D. S. Kishor
- Department of Life Science, College of Life Science and Biotechnology, Dongguk University, Seoul 10326, Korea; (M.K.); (D.S.K.); (X.D.)
| | - Xueshi Du
- Department of Life Science, College of Life Science and Biotechnology, Dongguk University, Seoul 10326, Korea; (M.K.); (D.S.K.); (X.D.)
| | - Sang-Min Chung
- Department of Life Science, College of Life Science and Biotechnology, Dongguk University, Seoul 10326, Korea; (M.K.); (D.S.K.); (X.D.)
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Hoang VV, Zou Y, Kurata K, Enomoto K. Expression of recombinant T-cell epitopes of major Japanese cedar pollen allergens fused with cholera toxin B subunit in Escherichia coli. Protein Expr Purif 2015; 109:62-9. [DOI: 10.1016/j.pep.2015.02.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Revised: 01/29/2015] [Accepted: 02/01/2015] [Indexed: 01/09/2023]
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4
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Lee G, Na YJ, Yang BG, Choi JP, Seo YB, Hong CP, Yun CH, Kim DH, Sohn EJ, Kim JH, Sung YC, Kim YK, Jang MH, Hwang I. Oral immunization of haemaggulutinin H5 expressed in plant endoplasmic reticulum with adjuvant saponin protects mice against highly pathogenic avian influenza A virus infection. PLANT BIOTECHNOLOGY JOURNAL 2015; 13:62-72. [PMID: 25065685 DOI: 10.1111/pbi.12235] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2014] [Accepted: 06/26/2014] [Indexed: 06/03/2023]
Abstract
Pandemics in poultry caused by the highly pathogenic avian influenza (HPAI) A virus occur too frequently globally, and there is growing concern about the HPAI A virus due to the possibility of a pandemic among humans. Thus, it is important to develop a vaccine against HPAI suitable for both humans and animals. Various approaches are underway to develop such vaccines. In particular, an edible vaccine would be a convenient way to vaccinate poultry because of the behaviour of the animals. However, an edible vaccine is still not available. In this study, we developed a strategy of effective vaccination of mice by the oral administration of transgenic Arabidopsis plants (HA-TG) expressing haemagglutinin (HA) in the endoplasmic reticulum (ER). Expression of HA in the ER resulted in its high-level accumulation, N-glycosylation, protection from proteolytic degradation and long-term stability. Oral administration of HA-TG with saponin elicited high levels of HA-specific systemic IgG and mucosal IgA responses in mice, which resulted in protection against a lethal influenza virus infection with attenuated inflammatory symptoms. Based on these results, we propose that oral administration of freeze-dried leaf powders from transgenic plants expressing HA in the ER together with saponin is an attractive strategy for vaccination against influenza A virus.
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MESH Headings
- Adjuvants, Immunologic/pharmacology
- Administration, Oral
- Animals
- Antibody Formation/drug effects
- Antibody Formation/immunology
- Antibody Specificity/drug effects
- Antibody Specificity/immunology
- Antigens, Viral/immunology
- Arabidopsis/genetics
- Dose-Response Relationship, Immunologic
- Endoplasmic Reticulum/metabolism
- Female
- Hemagglutinin Glycoproteins, Influenza Virus/immunology
- Immunity, Humoral/drug effects
- Immunity, Mucosal/drug effects
- Influenza A Virus, H5N1 Subtype/immunology
- Influenza Vaccines/administration & dosage
- Influenza Vaccines/immunology
- Mice, Inbred C57BL
- Orthomyxoviridae Infections/immunology
- Orthomyxoviridae Infections/prevention & control
- Orthomyxoviridae Infections/virology
- Plants, Genetically Modified
- Pneumonia/immunology
- Pneumonia/pathology
- Pneumonia/prevention & control
- Pneumonia/virology
- Recombinant Fusion Proteins/metabolism
- Saponins/immunology
- Vaccination
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Affiliation(s)
- Goeun Lee
- School of Interdisciplinary Bioscience and Bioengineering, Pohang University of Science and Technology, Pohang, Korea; Academy of Immunology and Microbiology (AIM), Institute for Basic Science (IBS), Pohang, Korea
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USING OF Agrobacterium-MEDIATED TRANSFORMATION FOR THE BIOTECHNOLOGICAL IMPROVEMENT OF COMPOSITAE PLANTS. BIOTECHNOLOGIA ACTA 2015. [DOI: 10.15407/biotech8.02.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Rosales-Mendoza S. Plant-Based Vaccines as a Global Vaccination Approach: Current Perspectives. GENETICALLY ENGINEERED PLANTS AS A SOURCE OF VACCINES AGAINST WIDE SPREAD DISEASES 2014. [PMCID: PMC7114996 DOI: 10.1007/978-1-4939-0850-9_13] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
This chapter provides a perspective on the evolution of the field of plant-based vaccine from the limitations identified in initial developments as to how this biotechnological approach has become sophisticated via the development of new technologies and has gained industry interest. Perspectives for the field at both the basic research and the industrial level are emphasized. Perspectives considered of relevance in terms of basic research include (1) advancing the development of oral formulations, (2) expanding the modalities of expression of immunogens, (3) diversifying production platforms, particularly those performed under full containment, and (4) targeting a broader number of diseases. These goals are expected to multiply the expectations for benefits derived from plant-based vaccine-production technology. On the other hand, technology transfer and regulatory issues represent a critical hurdle to this technology becoming a reality. It is also critical to achieve social acceptance as well as implement initiatives for the exploitation of the technology for humanitarian purposes and for the benefit of poor countries. This overview predicts considerable potential for plant-based vaccines to positively impact the field of vaccinology in the near future.
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Affiliation(s)
- Sergio Rosales-Mendoza
- Facultad de Ciencias Químicas, Universidad Autónoma de San Luis Potosí, San Luis Potosí, Mexico
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Gorantala J, Grover S, Rahi A, Chaudhary P, Rajwanshi R, Sarin NB, Bhatnagar R. Generation of protective immune response against anthrax by oral immunization with protective antigen plant-based vaccine. J Biotechnol 2014; 176:1-10. [PMID: 24548460 DOI: 10.1016/j.jbiotec.2014.01.033] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2013] [Revised: 12/30/2013] [Accepted: 01/29/2014] [Indexed: 01/04/2023]
Abstract
In concern with frequent recurrence of anthrax in endemic areas and inadvertent use of its spores as biological weapon, the development of an effective anthrax vaccine suitable for both human and veterinary needs is highly desirable. A simple oral delivery through expression in plant system could offer promising alternative to the current methods that rely on injectable vaccines extracted from bacterial sources. In the present study, we have expressed protective antigen (PA) gene in Indian mustard by Agrobacterium-mediated transformation and in tobacco by plastid transformation. Putative transgenic lines were verified for the presence of transgene and its expression by molecular analysis. PA expressed in transgenic lines was biologically active as evidenced by macrophage lysis assay. Intraperitoneal (i.p.) and oral immunization with plant PA in murine model indicated high serum PA specific IgG and IgA antibody titers. PA specific mucosal immune response was noted in orally immunized groups. Further, antibodies indicated lethal toxin neutralizing potential in-vitro and conferred protection against in-vivo toxin challenge. Oral immunization experiments demonstrated generation of immunoprotective response in mice. Thus, our study examines the feasibility of oral PA vaccine expressed in an edible plant system against anthrax.
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Affiliation(s)
- Jyotsna Gorantala
- Laboratory of Molecular Biology and Genetic Engineering, School of Biotechnology, Jawaharlal Nehru University, New Delhi, India
| | - Sonam Grover
- Molecular Technology Laboratory, School of Biotechnology, Jawaharlal Nehru University, New Delhi, India
| | - Amit Rahi
- Laboratory of Molecular Biology and Genetic Engineering, School of Biotechnology, Jawaharlal Nehru University, New Delhi, India
| | - Prerna Chaudhary
- School of Life Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Ravi Rajwanshi
- School of Life Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Neera Bhalla Sarin
- School of Life Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Rakesh Bhatnagar
- Laboratory of Molecular Biology and Genetic Engineering, School of Biotechnology, Jawaharlal Nehru University, New Delhi, India.
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Genes involved in the endoplasmic reticulum N-glycosylation pathway of the red microalga Porphyridium sp.: a bioinformatic study. Int J Mol Sci 2014; 15:2305-26. [PMID: 24514561 PMCID: PMC3958852 DOI: 10.3390/ijms15022305] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2013] [Revised: 01/13/2014] [Accepted: 01/23/2014] [Indexed: 11/17/2022] Open
Abstract
N-glycosylation is one of the most important post-translational modifications that influence protein polymorphism, including protein structures and their functions. Although this important biological process has been extensively studied in mammals, only limited knowledge exists regarding glycosylation in algae. The current research is focused on the red microalga Porphyridium sp., which is a potentially valuable source for various applications, such as skin therapy, food, and pharmaceuticals. The enzymes involved in the biosynthesis and processing of N-glycans remain undefined in this species, and the mechanism(s) of their genetic regulation is completely unknown. In this study, we describe our pioneering attempt to understand the endoplasmic reticulum N-Glycosylation pathway in Porphyridium sp., using a bioinformatic approach. Homology searches, based on sequence similarities with genes encoding proteins involved in the ER N-glycosylation pathway (including their conserved parts) were conducted using the TBLASTN function on the algae DNA scaffold contigs database. This approach led to the identification of 24 encoded-genes implicated with the ER N-glycosylation pathway in Porphyridium sp. Homologs were found for almost all known N-glycosylation protein sequences in the ER pathway of Porphyridium sp.; thus, suggesting that the ER-pathway is conserved; as it is in other organisms (animals, plants, yeasts, etc.).
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9
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Cañizares MC, Lomonossoff GP, Nicholson L. Development of cowpea mosaic virus-based vectors for the production of vaccines in plants. Expert Rev Vaccines 2014; 4:687-97. [PMID: 16221070 DOI: 10.1586/14760584.4.5.687] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Plant viruses are emerging as an attractive alternative to stable genetic transformation for the expression of foreign proteins in plants. The main advantages of using this strategy are that viral genomes are small and easy to manipulate, infection of plants with modified viruses is simpler and quicker than the regeneration of stably transformed plants and the sequence inserted into a virus vector will be highly amplified. One use of these virus expression systems is for vaccine production. Among plant viruses, cowpea mosaic virus makes an ideal candidate for the production of such vaccines because it grows extremely well in host plants, is very stable, and the purification of virus particles, if required, is straightforward. In this article, the authors review the progress made in the development of cowpea mosaic virus-based vectors for vaccine production, making use of two main approaches: epitope presentation and polypeptide expression.
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Affiliation(s)
- M Carmen Cañizares
- Department of Biological Chemistry, John Innes Centre, Norwich, NR4 7UH, UK.
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10
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Sciutto E, Fragoso G, Hernández M, Rosas G, Martínez JJ, Fleury A, Cervantes J, Aluja A, Larralde C. Development of the S3Pvac vaccine against murine Taenia crassiceps cysticercosis: a historical review. J Parasitol 2013; 99:693-702. [PMID: 23409920 DOI: 10.1645/ge-3101.1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Our work of the last 25 yr was concerned with the development of a vaccine aimed to prevent porcine Taenia solium cysticercosis and was based on cross-reacting Taenia crassiceps antigens that had proved protective against experimental intraperitoneal murine T. crassiceps cysticercosis (EIMTcC). In recent times the efficacy of the vaccine has been considered in need of confirmation, and the use of EIMTcC has been questioned as a valid tool in screening for vaccine candidates among the many antigens possibly involved. A review of our work divided in 2 parts is presented at this point, the first dealing with EIMTcC and the second with porcine T. solium cysticercosis (presented in this issue). Herein, we revise our results using EIMTcC as a measure of the protective capacity of T. crassiceps complex antigen mixtures, of purified native antigens, and of S3Pvac anti-cysticercosis vaccine composed by 3 protective peptides: GK-1, KETc1, and KETc12 either synthetic or recombinantly expressed and collectively or separately, by diverse delivery systems when administered at different doses and by different routes. Statistical analyses of the data lead confidently to the strong inference that S3Pvac is indeed an effective vaccine against EIMTcC via specific and non-specific mechanisms of protection.
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Affiliation(s)
- Edda Sciutto
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, México DF, México.
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Shahid M, Shahzad A, Malik A, Sahai A. Plant Edible Vaccines: A Revolution in Vaccination. RECENT TRENDS IN BIOTECHNOLOGY AND THERAPEUTIC APPLICATIONS OF MEDICINAL PLANTS 2013. [PMCID: PMC7120501 DOI: 10.1007/978-94-007-6603-7_10] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Mohd. Shahid
- Arabian Gulf University, Department Of Medical Microbiology, College of Medicine & Medical Sciences, Manama, Bahrain
| | - Anwar Shahzad
- , Department of Botany, Aligarh Muslim University, Aligarh, 202002 Uttar Pradesh India
| | - Abida Malik
- , Department of Microbiology, Aligarh Muslim University, J. N. Medical College & Hospital, Aligarh, 202002 Uttar Pradesh India
| | - Aastha Sahai
- , Department of Botany, Aligarh Muslim University, Aligarh, 202002 Uttar Pradesh India
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Skarjinskaia M, Ruby K, Araujo A, Taylor K, Gopalasamy-Raju V, Musiychuk K, Chichester JA, Palmer GA, de la Rosa P, Mett V, Ugulava N, Streatfield SJ, Yusibov V. Hairy Roots as a Vaccine Production and Delivery System. BIOTECHNOLOGY OF HAIRY ROOT SYSTEMS 2013; 134:115-34. [DOI: 10.1007/10_2013_184] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Rosales-Mendoza S, Govea-Alonso DO, Monreal-Escalante E, Fragoso G, Sciutto E. Developing plant-based vaccines against neglected tropical diseases: where are we? Vaccine 2012; 31:40-8. [PMID: 23142588 DOI: 10.1016/j.vaccine.2012.10.094] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2012] [Revised: 10/09/2012] [Accepted: 10/25/2012] [Indexed: 10/27/2022]
Abstract
Neglected tropical diseases (NTDs) impair the lives of 1 billion people worldwide, and threaten the health of millions more. Although vaccine candidates have been proposed to prevent some NTDs, no vaccine is available at the market yet. Vaccines against NTDs should be low-cost and needle-free to reduce the logistic cost of their administration. Plant-based vaccines meet both requirements: plant systems allow antigen production at low cost, and also yield an optimal delivery vehicle that prevents or delays digestive hydrolysis of vaccine antigens. This review covers recent reports on the development of plant-based vaccines against NTDs. Efforts conducted by a number of research groups to develop vaccines as a mean to fight rabies, cysticercosis, dengue, and helminthiasis are emphasized. Future perspectives are identified, such as the need to develop vaccination models for more than ten pathologies through a plant-based biotechnological approach. Current limitations on the method are also noted, and molecular approaches that might allow us to address such limitations are discussed.
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Affiliation(s)
- Sergio Rosales-Mendoza
- Laboratorio de biofarmacéuticos recombinantes, Universidad Autónoma de San Luis Potosí, Av. Dr. Manuel Nava 6, SLP, 78210, Mexico.
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Ling HY, Edwards AM, Gantier MP, DeBoer KD, Neale AD, Hamill JD, Walmsley AM. An interspecific Nicotiana hybrid as a useful and cost-effective platform for production of animal vaccines. PLoS One 2012; 7:e35688. [PMID: 22539991 PMCID: PMC3334924 DOI: 10.1371/journal.pone.0035688] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2011] [Accepted: 03/23/2012] [Indexed: 01/26/2023] Open
Abstract
The use of transgenic plants to produce novel products has great biotechnological potential as the relatively inexpensive inputs of light, water, and nutrients are utilised in return for potentially valuable bioactive metabolites, diagnostic proteins and vaccines. Extensive research is ongoing in this area internationally with the aim of producing plant-made vaccines of importance for both animals and humans. Vaccine purification is generally regarded as being integral to the preparation of safe and effective vaccines for use in humans. However, the use of crude plant extracts for animal immunisation may enable plant-made vaccines to become a cost-effective and efficacious approach to safely immunise large numbers of farm animals against diseases such as avian influenza. Since the technology associated with genetic transformation and large-scale propagation is very well established in Nicotiana, the genus has attributes well-suited for the production of plant-made vaccines. However the presence of potentially toxic alkaloids in Nicotiana extracts impedes their use as crude vaccine preparations. In the current study we describe a Nicotiana tabacum and N. glauca hybrid that expresses the HA glycoprotein of influenza A in its leaves but does not synthesize alkaloids. We demonstrate that injection with crude leaf extracts from these interspecific hybrid plants is a safe and effective approach for immunising mice. Moreover, this antigen-producing alkaloid-free, transgenic interspecific hybrid is vigorous, with a high capacity for vegetative shoot regeneration after harvesting. These plants are easily propagated by vegetative cuttings and have the added benefit of not producing viable pollen, thus reducing potential problems associated with bio-containment. Hence, these Nicotiana hybrids provide an advantageous production platform for partially purified, plant-made vaccines which may be particularly well suited for use in veterinary immunization programs.
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Affiliation(s)
- Huai-Yian Ling
- School of Biological Sciences, Monash University, Clayton, Melbourne, Victoria, Australia
| | - Aaron M. Edwards
- School of Biological Sciences, Monash University, Clayton, Melbourne, Victoria, Australia
| | - Michael P. Gantier
- Monash Institute of Medical Research, Centre for Cancer Research, Clayton, Melbourne, Victoria, Australia
| | - Kathleen D. DeBoer
- Department of Anatomy and Development Biology, Monash University, Clayton, Melbourne, Victoria, Australia
| | - Alan D. Neale
- School of Biological Sciences, Monash University, Clayton, Melbourne, Victoria, Australia
| | - John D. Hamill
- Department of Forest and Ecosystem Science, University of Melbourne, Creswick, Victoria, Australia
| | - Amanda M. Walmsley
- School of Biological Sciences, Monash University, Clayton, Melbourne, Victoria, Australia
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Wang Y, Shen Q, Jiang Y, Song Y, Fang L, Xiao S, Chen H. Immunogenicity of foot-and-mouth disease virus structural polyprotein P1 expressed in transgenic rice. J Virol Methods 2012; 181:12-7. [DOI: 10.1016/j.jviromet.2012.01.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2011] [Revised: 12/23/2011] [Accepted: 01/09/2012] [Indexed: 11/25/2022]
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16
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Betancourt MA, de Aluja AS, Sciutto E, Hernández M, Bobes RJ, Rosas G, Hernández B, Fragoso G, Hallal-Calleros C, Aguilar L, Flores-Peréz I. Effective protection induced by three different versions of the porcine S3Pvac anticysticercosis vaccine against rabbit experimental Taenia pisiformis cysticercosis. Vaccine 2012; 30:2760-7. [DOI: 10.1016/j.vaccine.2012.02.022] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2011] [Revised: 01/13/2012] [Accepted: 02/06/2012] [Indexed: 10/28/2022]
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17
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Ahmad P, Ashraf M, Younis M, Hu X, Kumar A, Akram NA, Al-Qurainy F. Role of transgenic plants in agriculture and biopharming. Biotechnol Adv 2011; 30:524-40. [PMID: 21959304 DOI: 10.1016/j.biotechadv.2011.09.006] [Citation(s) in RCA: 166] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2011] [Revised: 08/23/2011] [Accepted: 09/12/2011] [Indexed: 11/29/2022]
Abstract
At present, environmental degradation and the consistently growing population are two main problems on the planet earth. Fulfilling the needs of this growing population is quite difficult from the limited arable land available on the globe. Although there are legal, social and political barriers to the utilization of biotechnology, advances in this field have substantially improved agriculture and human life to a great extent. One of the vital tools of biotechnology is genetic engineering (GE) which is used to modify plants, animals and microorganisms according to desired needs. In fact, genetic engineering facilitates the transfer of desired characteristics into other plants which is not possible through conventional plant breeding. A variety of crops have been engineered for enhanced resistance to a multitude of stresses such as herbicides, insecticides, viruses and a combination of biotic and abiotic stresses in different crops including rice, mustard, maize, potato, tomato, etc. Apart from the use of GE in agriculture, it is being extensively employed to modify the plants for enhanced production of vaccines, hormones, etc. Vaccines against certain diseases are certainly available in the market, but most of them are very costly. Developing countries cannot afford the disease control through such cost-intensive vaccines. Alternatively, efforts are being made to produce edible vaccines which are cheap and have many advantages over the commercialized vaccines. Transgenic plants generated for this purpose are capable of expressing recombinant proteins including viral and bacterial antigens and antibodies. Common food plants like banana, tomato, rice, carrot, etc. have been used to produce vaccines against certain diseases like hepatitis B, cholera, HIV, etc. Thus, the up- and down-regulation of desired genes which are used for the modification of plants have a marked role in the improvement of genetic crops. In this review, we have comprehensively discussed the role of genetic engineering in generating transgenic lines/cultivars of different crops with improved nutrient quality, biofuel production, enhanced production of vaccines and antibodies, increased resistance against insects, herbicides, diseases and abiotic stresses as well as the safety measures for their commercialization.
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Affiliation(s)
- Parvaiz Ahmad
- Department of Botany, A.S. College, 190008, University of Kashmir, Srinagar, India.
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Gonzalez-Rabade N, McGowan EG, Zhou F, McCabe MS, Bock R, Dix PJ, Gray JC, Ma JKC. Immunogenicity of chloroplast-derived HIV-1 p24 and a p24-Nef fusion protein following subcutaneous and oral administration in mice. PLANT BIOTECHNOLOGY JOURNAL 2011; 9:629-38. [PMID: 21443546 DOI: 10.1111/j.1467-7652.2011.00609.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
High-level expression of foreign proteins in chloroplasts of transplastomic plants provides excellent opportunities for the development of oral vaccines against a range of debilitating or fatal diseases. The HIV-1 capsid protein p24 and a fusion of p24 with the negative regulatory protein Nef (p24-Nef) accumulate to ∼4% and ∼40% of the total soluble protein of leaves of transplastomic tobacco (Nicotiana tabacum L.) plants. This study has investigated the immunogenicity in mice of these two HIV-1 proteins, using cholera toxin B subunit as an adjuvant. Subcutaneous immunization with purified chloroplast-derived p24 elicited a strong antigen-specific serum IgG response, comparable to that produced by Escherichia coli-derived p24. Oral administration of a partially purified preparation of chloroplast-derived p24-Nef fusion protein, used as a booster after subcutaneous injection with either p24 or Nef, also elicited strong antigen-specific serum IgG responses. Both IgG1 and IgG2a subtypes, associated with cell-mediated Th1 and humoral Th2 responses, respectively, were found in sera after subcutaneous and oral administration. These results indicate that chloroplast-derived HIV-1 p24-Nef is a promising candidate as a component of a subunit vaccine delivered by oral boosting, after subcutaneous priming by injection of p24 and/or Nef.
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MESH Headings
- AIDS Vaccines/administration & dosage
- AIDS Vaccines/genetics
- AIDS Vaccines/immunology
- Adjuvants, Immunologic/administration & dosage
- Administration, Oral
- Animals
- Chloroplasts/genetics
- Chloroplasts/immunology
- Female
- HIV Core Protein p24/administration & dosage
- HIV Core Protein p24/genetics
- HIV Core Protein p24/immunology
- Immunity, Humoral/immunology
- Immunization, Secondary
- Injections, Subcutaneous
- Mice
- Mice, Inbred BALB C
- Mice, Inbred C57BL
- Nicotine/toxicity
- Plants, Genetically Modified/genetics
- Nicotiana/genetics
- nef Gene Products, Human Immunodeficiency Virus/administration & dosage
- nef Gene Products, Human Immunodeficiency Virus/genetics
- nef Gene Products, Human Immunodeficiency Virus/immunology
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Chen X, Liu J. Generation and immunogenicity of transgenic potato expressing the GP5 protein of porcine reproductive and respiratory syndrome virus. J Virol Methods 2011; 173:153-8. [PMID: 21300109 DOI: 10.1016/j.jviromet.2011.02.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2010] [Revised: 01/26/2011] [Accepted: 02/01/2011] [Indexed: 02/06/2023]
Abstract
Porcine reproductive and respiratory syndrome virus (PRRSV) is an important pathogen that has caused huge economic losses in the global swine industry. The advent of molecular farming has provided a cost-effective strategy for the development of transgenic plants as bioreactors to produce recombinant proteins. In this study, transgenic potato expressing GP5 protein of PRRSV was produced by Agrobacterium-mediated transformation, and confirmed using Southern blot and RT-PCR analyses. Recombinant GP5 protein was detected by ELISA and Western blot analyses. Mice immunized with transgenic potato extracts generated both serum and gut mucosal-specific antibodies, although low levels of neutralizing antibodies were elicited. This study provides a new approach for the production of vaccines against PRRSV.
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Affiliation(s)
- Xia Chen
- College of Horticulture and Forestry Science, Huazhong Agricultural University, Wuhan, Hubei 430070, China
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20
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Matvieieva NA, Vasylenko MY, Shahovsky AM, Bannykova MO, Kvasko OY, Kuchuk NV. Effective Agrobacterium-mediated transformation of chicory (Cichorium intybus L.) with Mycobacterium tuberculosis antigene ESAT6. CYTOL GENET+ 2011. [DOI: 10.3103/s0095452711010038] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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21
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Obembe OO, Popoola JO, Leelavathi S, Reddy SV. Advances in plant molecular farming. Biotechnol Adv 2010; 29:210-22. [PMID: 21115109 DOI: 10.1016/j.biotechadv.2010.11.004] [Citation(s) in RCA: 118] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2010] [Revised: 11/12/2010] [Accepted: 11/12/2010] [Indexed: 01/01/2023]
Abstract
Plant molecular farming (PMF) is a new branch of plant biotechnology, where plants are engineered to produce recombinant pharmaceutical and industrial proteins in large quantities. As an emerging subdivision of the biopharmaceutical industry, PMF is still trying to gain comparable social acceptance as the already established production systems that produce these high valued proteins in microbial, yeast, or mammalian expression systems. This article reviews the various cost-effective technologies and strategies, which are being developed to improve yield and quality of the plant-derived pharmaceuticals, thereby making plant-based production system suitable alternatives to the existing systems. It also attempts to overview the different novel plant-derived pharmaceuticals and non-pharmaceutical protein products that are at various stages of clinical development or commercialization. It then discusses the biosafety and regulatory issues, which are crucial (if strictly adhered to) to eliminating potential health and environmental risks, which in turn is necessary to earning favorable public perception, thus ensuring the success of the industry.
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Affiliation(s)
- Olawole O Obembe
- Department of Biological Sciences, Covenant University, PMB 1023 Ota, Ogun State, Nigeria.
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22
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Granell A, Fernández del-Carmen A, Orzáez D. In planta production of plant-derived and non-plant-derived adjuvants. Expert Rev Vaccines 2010; 9:843-58. [PMID: 20673009 DOI: 10.1586/erv.10.80] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Recombinant antigen production in plants is a safe and economically sound strategy for vaccine development, particularly for oral/mucosal vaccination, but subunit vaccines usually suffer from weak immunogenicity and require adjuvants that escort the antigens, target them to relevant sites and/or activate antigen-presenting cells for elicitation of protective immunity. Genetic fusions of antigens with bacterial adjuvants as the B subunit of the cholera toxin have been successful in inducing protective immunity of plant-made vaccines. In addition, several plant compounds, mainly plant defensive molecules as lectins and saponins, have shown strong adjuvant activities. The molecular diversity of the plant kingdom offers a vast source of non-bacterial compounds with adjuvant activity, which can be assayed in emerging plant manufacturing systems for the design of new plant vaccine formulations.
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Affiliation(s)
- Antonio Granell
- Instituto de Biología Molecular y Celular de Plantas, CSIC-Universidad Politécnica de Valencia, Spain
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23
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Tran M, Zhou B, Pettersson PL, Gonzalez MJ, Mayfield SP. Synthesis and assembly of a full-length human monoclonal antibody in algal chloroplasts. Biotechnol Bioeng 2009; 104:663-73. [PMID: 19562731 DOI: 10.1002/bit.22446] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Monoclonal antibodies can be effective therapeutics against a variety of human diseases, but currently marketed antibody-based drugs are very expensive compared to other therapeutic options. Here, we show that the eukaryotic green algae Chlamydomonas reinhardtii is capable of synthesizing and assembling a full-length IgG1 human monoclonal antibody (mAb) in transgenic chloroplasts. This antibody, 83K7C, is derived from a human IgG1 directed against anthrax protective antigen 83 (PA83), and has been shown to block the effects of anthrax toxin in animal models. Here we show that 83K7C heavy and light chain proteins expressed in the chloroplast accumulate as soluble proteins that assemble into complexes containing two heavy and two light chain proteins. The algal-expressed 83K7C binds PA83 in vitro with similar affinity to the mammalian-expressed 83K7C antibody. In addition, a second human IgG1 and a mouse IgG1 were also expressed and shown to properly assemble in algal chloroplast. These results show that chloroplasts have the ability to fold and assemble full-length human mAbs, and suggest the potential of algae as a platform for the cost effective production of complex human therapeutic proteins.
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Affiliation(s)
- Miller Tran
- Department of Cell Biology, The Skaggs Institute for Chemical Biology, The Scripps Research Institute, La Jolla, California 92037, USA
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24
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Rigano MM, Manna C, Giulini A, Pedrazzini E, Capobianchi M, Castilletti C, Di Caro A, Ippolito G, Beggio P, De Giuli Morghen C, Monti L, Vitale A, Cardi T. Transgenic chloroplasts are efficient sites for high-yield production of the vaccinia virus envelope protein A27L in plant cellsdagger. PLANT BIOTECHNOLOGY JOURNAL 2009; 7:577-91. [PMID: 19508274 DOI: 10.1111/j.1467-7652.2009.00425.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Orthopoxviruses (OPVs) have recently received increasing attention because of their potential use in bioterrorism and the occurrence of zoonotic OPV outbreaks, highlighting the need for the development of safe and cost-effective vaccines against smallpox and related viruses. In this respect, the production of subunit protein-based vaccines in transgenic plants is an attractive approach. For this purpose, the A27L immunogenic protein of vaccinia virus was expressed in tobacco using stable transformation of the nuclear or plastid genome. The vaccinia virus protein was expressed in the stroma of transplastomic plants in soluble form and accumulated to about 18% of total soluble protein (equivalent to approximately 1.7 mg/g fresh weight). This level of A27L accumulation was 500-fold higher than that in nuclear transformed plants, and did not decline during leaf development. Transplastomic plants showed a partial reduction in growth and were chlorotic, but reached maturity and set fertile seeds. Analysis by immunofluorescence microscopy indicated altered chlorophyll distribution. Chloroplast-synthesized A27L formed oligomers, suggesting correct folding and quaternary structure, and was recognized by serum from a patient recently infected by a zoonotic OPV. Taken together, these results demonstrate that chloroplasts are an attractive production vehicle for the expression of OPV subunit vaccines.
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Affiliation(s)
- M Manuela Rigano
- Department of Soil, Plant, Environmental and Animal Production Sciences, University of Naples 'Federico II', Via Università, Portici, Italy
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25
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Wang Y, Deng H, Zhang X, Xiao H, Jiang Y, Song Y, Fang L, Xiao S, Zhen Y, Chen H. Generation and immunogenicity of Japanese encephalitis virus envelope protein expressed in transgenic rice. Biochem Biophys Res Commun 2009; 380:292-7. [DOI: 10.1016/j.bbrc.2009.01.061] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2009] [Accepted: 01/13/2009] [Indexed: 11/26/2022]
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26
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Abstract
Plants are low-cost bioreactors for the production of various biopharmaceuticals including oral vaccines. Plant-derived oral vaccines are potentially useful in combating viral infections involving mucosal immunity. Transgenic plants have been generated to successfully produce mucosal vaccines against cholera, hepatitis B, foot-and-mouth disease, and Norwalk virus. As a first step toward the generation of oral vaccines against the severe acute respiratory syndrome coronavirus (SARS-CoV), we have expressed a recombinant S1 protein of the SARS-CoV in transformed tobacco. Since plant transformation and regeneration of stable transformants require considerable time, we initially used a green fluorescent protein (GFP) to tag the antigen in transient expression. GFP was fused to the carboxy-terminus of S1 for expression of S1-GFP to show expression of recombinant S1 by agroinfiltration of tobacco leaves. The GFP tag enables a relatively quick confirmation of antigen expression in plant cells by fluorescent microscopy. Such analysis using GFP that precedes stable plant transformation will enable the rapid screening of multiple constructs to attain optimal recombinant protein expression. Furthermore, this approach determines the subcellular localization of the recombinant protein in plant cells, providing information on optimal subcellular targeting for production in plant bioreactors.
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Affiliation(s)
- Barry W. Hicks
- Department of Chemistry, 2355 Fairchild Drive, US Airforce Academy, CO 80840 USA
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27
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Abstract
PURPOSE OF REVIEW Oral immunization with vaccines against intestinal infectious diseases has been extensively explored for several decades. Despite the immunologic and economic rationale behind oral immunization, only a few mucosal vaccines are available for the prevention of mucosal infections. Here, we summarize the current status of such vaccines, with a focus on intestinal infectious diseases, describe alternative approaches, and analyze advantages and difficulties encountered with a broad implementation of these vaccines. RECENT FINDINGS Due to the limited absorption from the intestinal tract and sensitivity to degradation, oral vaccines composed of killed bacteria and viruses or antigens isolated from infectious agents have not been successful. New, live-attenuated bacterial and viral or edible plant-derived vaccines, however, have been recently introduced for this purpose. Furthermore, systemic immunization with vaccines composed of bacterial polysaccharides chemically coupled to suitable protein carriers induces high levels of IgG antibodies, which may provide immunity toward Salmonella typhi, Shigella, and Escherichia coli. SUMMARY Further improvements in antigen-delivery systems, the development of adjuvants that are safe for mucosal application in humans, use of live-attenuated vaccines and microbial vectors, and production of certain vaccines in plant expression systems are likely to contribute to the broader use of oral vaccines in the future.
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28
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Schmidt G, Gadermaier G, Pertl H, Siegert M, Oksman-Caldentey KM, Ritala A, Himly M, Obermeyer G, Ferreira F. Production of recombinant allergens in plants. PHYTOCHEMISTRY REVIEWS : PROCEEDINGS OF THE PHYTOCHEMICAL SOCIETY OF EUROPE 2008; 7:539-552. [PMID: 21258627 PMCID: PMC3024541 DOI: 10.1007/s11101-008-9099-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
A large percentage of allergenic proteins are of plant origin. Hence, plant-based expression systems are considered ideal for the recombinant production of certain allergens. First attempts to establish production of plant-derived allergens in plants focused on transient expression in Nicotiana benthamiana infected with recombinant viral vectors. Accordingly, allergens from birch and mugwort pollen, as well as from apple have been expressed in plants. Production of house dust mite allergens has been achieved by Agrobacterium-mediated transformation of tobacco plants. Beside the use of plants as production systems, other approaches have focused on the development of edible vaccines expressing allergens or epitopes thereof, which bypasses the need of allergen purification. The potential of this approach has been convincingly demonstrated for transgenic rice seeds expressing seven dominant human T cell epitopes derived from Japanese cedar pollen allergens. Parallel to efforts in developing recombinant-based diagnostic and therapeutic reagents, different gene-silencing approaches have been used to decrease the expression of allergenic proteins in allergen sources. In this way hypoallergenic ryegrass, soybean, rice, apple, and tomato were developed.
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Affiliation(s)
- Georg Schmidt
- Christian Doppler Laboratory for Allergy Diagnosis and Therapy, Department of Molecular Biology, University of Salzburg, Hellbrunnerstr. 34, 5020 Salzburg, Austria
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29
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Oszvald M, Kang TJ, Tomoskozi S, Jenes B, Kim TG, Cha YS, Tamas L, Yang MS. Expression of Cholera Toxin B Subunit in Transgenic Rice Endosperm. Mol Biotechnol 2008; 40:261-8. [DOI: 10.1007/s12033-008-9083-2] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2008] [Accepted: 06/18/2008] [Indexed: 11/28/2022]
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30
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Sustained Expression of Human Cytomegalovirus Glycoprotein B (UL55) in the Seeds of Homozygous Rice Plants. Mol Biotechnol 2008; 40:1-12. [DOI: 10.1007/s12033-007-9029-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2007] [Accepted: 12/14/2007] [Indexed: 12/21/2022]
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31
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Sharma MK, Singh NK, Jani D, Sisodia R, Thungapathra M, Gautam JK, Meena LS, Singh Y, Ghosh A, Tyagi AK, Sharma AK. Expression of toxin co-regulated pilus subunit A (TCPA) of Vibrio cholerae and its immunogenic epitopes fused to cholera toxin B subunit in transgenic tomato (Solanum lycopersicum). PLANT CELL REPORTS 2008; 27:307-318. [PMID: 17962948 DOI: 10.1007/s00299-007-0464-y] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2007] [Accepted: 09/30/2007] [Indexed: 05/25/2023]
Abstract
For protection against cholera, it is important to develop efficient vaccine capable of inducing anti-toxin as well as anti-colonizing immunity against Vibrio cholerae infections. Earlier, expression of cholera toxin B subunit (CTB) in tomato was reported by us. In the present investigation, toxin co-regulated pilus subunit A (TCPA), earlier reported to be an antigen capable of providing anti-colonization immunity, has been expressed in tomato. Further, to generate more potent combinatorial antigens, nucleotides encoding P4 or P6 epitope of TCPA were fused to cholera toxin B subunit gene (ctxB) and expressed in tomato. Presence of transgenes in the tomato genome was confirmed by PCR and expression of genes was confirmed at transcript and protein level. TCPA, chimeric CTB-P4 and CTB-P6 proteins were also expressed in E. coli. TCPA protein expressed in E. coli was purified to generate anti-TCPA antibodies in rabbit. Immunoblot and G(M1)-ELISA verified the synthesis and assembly of pentameric chimeric proteins in fruit tissue of transgenic tomato plants. The chimeric protein CTB-P4 and CTB-P6 accumulated up to 0.17 and 0.096% of total soluble protein (TSP), respectively, in tomato fruits. Whereas expression of TCPA, CTB-P4 and CTB-P6 in E. coli can be utilized for development of conventional vaccine, expression of these antigens which can provide both anti-toxin as well as anti-colonization immunity, has been demonstrated in plants, in a form which is potentially capable of inducing immune response against cholera infection.
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Affiliation(s)
- Manoj Kumar Sharma
- Department of Plant Molecular biology, University of Delhi South Campus, New Delhi 110021, India
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Young M, Willits D, Uchida M, Douglas T. Plant viruses as biotemplates for materials and their use in nanotechnology. ANNUAL REVIEW OF PHYTOPATHOLOGY 2008; 46:361-84. [PMID: 18473700 DOI: 10.1146/annurev.phyto.032508.131939] [Citation(s) in RCA: 127] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
In recent years, plant virus capsids, the protein shells that form the surface of a typical plant virus particle, have emerged as useful biotemplates for material synthesis. All virus capsids are assembled from virus-coded protein subunits. Many plant viruses assemble capsids with precise 3D structures providing nanoscale architectures that are highly homogeneous and can be produced in large quantities. Capsids are amenable to both genetic and chemical modifications allowing new functions to be incorporated into their structure by design. The three capsid surfaces, the interior surface, the exterior surface, or the interface between coat protein subunits, can be independently functionalized to produce multifunctional biotemplates. In this review, we examine the recent advances in using plant virus capsids as biotemplates for nanomaterials and their potential for applications in nanotechnology, especially medicine.
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Affiliation(s)
- Mark Young
- Department of Plant Sciences and Plant Pathology, Montana State University-Bozeman, Bozeman, Montana 59717, USA.
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33
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Nochi T, Takagi H, Yuki Y, Yang L, Masumura T, Mejima M, Nakanishi U, Matsumura A, Uozumi A, Hiroi T, Morita S, Tanaka K, Takaiwa F, Kiyono H. Rice-based mucosal vaccine as a global strategy for cold-chain- and needle-free vaccination. Proc Natl Acad Sci U S A 2007; 104:10986-91. [PMID: 17573530 PMCID: PMC1904174 DOI: 10.1073/pnas.0703766104] [Citation(s) in RCA: 220] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2007] [Indexed: 11/18/2022] Open
Abstract
Capable of inducing antigen-specific immune responses in both systemic and mucosal compartments without the use of syringe and needle, mucosal vaccination is considered ideal for the global control of infectious diseases. In this study, we developed a rice-based oral vaccine expressing cholera toxin B subunit (CTB) under the control of the endosperm-specific expression promoter 2.3-kb glutelin GluB-1 with codon usage optimization for expression in rice seed. An average of 30 mug of CTB per seed was stored in the protein bodies, which are storage organelles in rice. When mucosally fed, rice seeds expressing CTB were taken up by the M cells covering the Peyer's patches and induced CTB-specific serum IgG and mucosal IgA antibodies with neutralizing activity. When expressed in rice, CTB was protected from pepsin digestion in vitro. Rice-expressed CTB also remained stable and thus maintained immunogenicity at room temperature for >1.5 years, meaning that antigen-specific mucosal immune responses were induced at much lower doses than were necessary with purified recombinant CTB. Because they require neither refrigeration (cold-chain management) nor a needle, these rice-based mucosal vaccines offer a highly practical and cost-effective strategy for orally vaccinating large populations against mucosal infections, including those that may result from an act of bioterrorism.
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Affiliation(s)
- Tomonori Nochi
- *Division of Mucosal Immunology, Department of Microbiology and Immunology, The Institute of Medical Science, University of Tokyo, Tokyo 108-8639, Japan
- Core Research for Evolutional Science and Technology, Japan Science and Technology Corporation, Saitama 332-0012, Japan
| | - Hidenori Takagi
- Transgenic Crop Research and Development Center, National Institute of Agrobiological Sciences, Ibaraki 305-8602, Japan
| | - Yoshikazu Yuki
- *Division of Mucosal Immunology, Department of Microbiology and Immunology, The Institute of Medical Science, University of Tokyo, Tokyo 108-8639, Japan
- Core Research for Evolutional Science and Technology, Japan Science and Technology Corporation, Saitama 332-0012, Japan
| | - Lijun Yang
- Transgenic Crop Research and Development Center, National Institute of Agrobiological Sciences, Ibaraki 305-8602, Japan
| | - Takehiro Masumura
- Laboratory of Genetic Engineering, Graduate School of Agriculture, Kyoto Prefectural University, Shimogamo, Kyoto 606-8522, Japan
- Kyoto Prefectural Institute of Agricultural Biotechnology, Seika-cho, Kyoto 619-0244, Japan; and
| | - Mio Mejima
- *Division of Mucosal Immunology, Department of Microbiology and Immunology, The Institute of Medical Science, University of Tokyo, Tokyo 108-8639, Japan
- Core Research for Evolutional Science and Technology, Japan Science and Technology Corporation, Saitama 332-0012, Japan
| | - Ushio Nakanishi
- *Division of Mucosal Immunology, Department of Microbiology and Immunology, The Institute of Medical Science, University of Tokyo, Tokyo 108-8639, Japan
| | - Akiko Matsumura
- *Division of Mucosal Immunology, Department of Microbiology and Immunology, The Institute of Medical Science, University of Tokyo, Tokyo 108-8639, Japan
- Core Research for Evolutional Science and Technology, Japan Science and Technology Corporation, Saitama 332-0012, Japan
| | - Akihiro Uozumi
- *Division of Mucosal Immunology, Department of Microbiology and Immunology, The Institute of Medical Science, University of Tokyo, Tokyo 108-8639, Japan
| | - Takachika Hiroi
- Department of Allergy and Immunology, Tokyo Metropolitan Institute of Medical Science, Tokyo 113-8613, Japan
| | - Shigeto Morita
- Laboratory of Genetic Engineering, Graduate School of Agriculture, Kyoto Prefectural University, Shimogamo, Kyoto 606-8522, Japan
- Kyoto Prefectural Institute of Agricultural Biotechnology, Seika-cho, Kyoto 619-0244, Japan; and
| | - Kunisuke Tanaka
- Laboratory of Genetic Engineering, Graduate School of Agriculture, Kyoto Prefectural University, Shimogamo, Kyoto 606-8522, Japan
- Kyoto Prefectural Institute of Agricultural Biotechnology, Seika-cho, Kyoto 619-0244, Japan; and
| | - Fumio Takaiwa
- Transgenic Crop Research and Development Center, National Institute of Agrobiological Sciences, Ibaraki 305-8602, Japan
| | - Hiroshi Kiyono
- *Division of Mucosal Immunology, Department of Microbiology and Immunology, The Institute of Medical Science, University of Tokyo, Tokyo 108-8639, Japan
- Core Research for Evolutional Science and Technology, Japan Science and Technology Corporation, Saitama 332-0012, Japan
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Boehm R. Bioproduction of therapeutic proteins in the 21st century and the role of plants and plant cells as production platforms. Ann N Y Acad Sci 2007; 1102:121-34. [PMID: 17470916 PMCID: PMC7168112 DOI: 10.1196/annals.1408.009] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
abstract: In the last decade, the technique to genetically modify crop plants has gained more and more interest in terms of bioproduction of heterologous proteins. Plants have been discovered as a possible source for large amounts of cost effective recombinant protein. Main application fields are therapeutics for use in animal and human health, diagnostics, and technical enzymes. This review is focused on the recent progress in this field of molecular farming. After a comparison with hitherto established protein production systems, the advantages of plants as an alternative production system are discussed. An overview about the different host plants and possible expression strategies is given and the progress in commercialization of the techniques is highlighted. Finally, the role of plant cell cultures for the production of recombinant proteins is discussed.
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Affiliation(s)
- Robert Boehm
- Institute of Plant Molecular Physiology and Biotechnology, Karlrobert Kreiten-Str 13, Bonn, University of Bonn, Germany.
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Abstract
Biolistic delivery of DNA initiated plastid transformation research and still is the most widelyused approach to generate transplastomic lines in both algae and higher plants. The principal designof transformation vectors is similar in both phylogenetic groups. Although important additions tothe list of species transformed in their plastomes have been made in algae and in higher plants, thekey organisms in the area are still the two species, in which stable plastid transformation was initiallysuccessful, i.e., Chlamydomonas reinhardtii and tobacco. Basicresearch into organelle biology has substantially benefited from the homologous recombination-basedcapability to precisely insert at predetermined loci, delete, disrupt, or exchange plastid genomesequences. Successful expression of recombinant proteins, including pharmaceutical proteins, hasbeen demonstrated in Chlamydomonas as well as in higher plants,where some interesting agronomic traits were also engineered through plastid transformation.
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36
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Manuell AL, Beligni MV, Elder JH, Siefker DT, Tran M, Weber A, McDonald TL, Mayfield SP. Robust expression of a bioactive mammalian protein in Chlamydomonas chloroplast. PLANT BIOTECHNOLOGY JOURNAL 2007; 5:402-12. [PMID: 17359495 DOI: 10.1111/j.1467-7652.2007.00249.x] [Citation(s) in RCA: 112] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
We have engineered the chloroplast of eukaryotic algae to produce a number of recombinant proteins, including human monoclonal antibodies, but, to date, have achieved expression to only 0.5% of total protein. Here, we show that, by engineering the mammalian coding region of bovine mammary-associated serum amyloid (M-SAA) as a direct replacement for the chloroplast psbA coding region, we can achieve expression of recombinant protein above 5% of total protein. Chloroplast-expressed M-SAA accumulates predominantly as a soluble protein, contains the correct amino terminal sequence and has little or no post-translational modification. M-SAA is found in mammalian colostrum and stimulates the production of mucin in the gut, acting in the prophylaxis of bacterial and viral infections. Chloroplast-expressed and purified M-SAA is able to stimulate mucin production in human gut epithelial cell lines. As Chlamydomonas reinhardtii is an edible alga, production of therapeutic proteins in this organism offers the potential for oral delivery of gut-active proteins, such as M-SAA.
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Affiliation(s)
- Andrea L Manuell
- The Department of Cell Biology and The Skaggs Institute for Chemical Biology, La Jolla, CA 92037, USA
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37
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Dorokhov YL, Sheveleva AA, Frolova OY, Komarova TV, Zvereva AS, Ivanov PA, Atabekov JG. Superexpression of tuberculosis antigens in plant leaves. Tuberculosis (Edinb) 2007; 87:218-24. [DOI: 10.1016/j.tube.2006.10.001] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2006] [Revised: 08/17/2006] [Accepted: 10/05/2006] [Indexed: 10/23/2022]
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Rice J, Ainley WM, Shewen P. Plant-made vaccines: biotechnology and immunology in animal health. Anim Health Res Rev 2007; 6:199-209. [PMID: 16583782 DOI: 10.1079/ahr2005110] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
AbstractThe use of plants as production systems for vaccine antigens has been actively investigated over the last 15 years. The original research focused on the value of this expression system for oral delivery based on the hypothesis that plant-expressed antigens would be more stable within the digestive tract and would allow for the use of the oral route of administration to stimulate a mucosal immune response. However, while first conceived for utility via the oral route, plant-made antigens have also been studied as classical immunogens delivered via a needle to model animal systems. Antigens have been expressed in a number of whole plant and cell culture systems. Several alternative expression platforms have been developed to increase expression of antigens or to elicit preferred immunological responses. The biotechnological advances in plant expression and the immunological testing of these antigens will be reviewed in this paper focusing primarily on diseases of livestock and companion animals.
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Affiliation(s)
- J Rice
- Dow AgroSciences, 9330 Zionsville Road, Indianapolis, IN 46268, USA.
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39
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Biologically active human GM-CSF produced in the seeds of transgenic rice plants. Transgenic Res 2007; 16:713-21. [PMID: 17985214 DOI: 10.1007/s11248-006-9062-y] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2006] [Accepted: 11/28/2006] [Indexed: 10/23/2022]
Abstract
Rice flour is a well-known and characterized source of pharmaceutical ingredients, which are gluten-free and incorporated in many drug delivery applications such as excipient starch. To further exploit this uniqueness, the synthetic capacity of rice endosperm tissue, the basis of rice flour, was extended by genetic transformation. Recombinant human GM-CSF, a cytokine used in treating neutropenia and with other potential clinical applications, has been expressed in transgenic rice seeds using a rice glutelin promoter. Rice seeds accumulated human GM-CSF to a level of 1.3% of total soluble protein. The rice seed-produced human GM-CSF was found to be biologically active when tested using a human cell line TF-1. Use of rice as a host plant offers not only attractive features of safe production in seeds but also self-containment of foreign genes, as rice is primarily a self-pollinated crop plant.
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40
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Sparrow PAC, Irwin JA, Dale PJ, Twyman RM, Ma JKC. Pharma-Planta: road testing the developing regulatory guidelines for plant-made pharmaceuticals. Transgenic Res 2007; 16:147-61. [PMID: 17285266 DOI: 10.1007/s11248-007-9074-2] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2006] [Accepted: 01/11/2007] [Indexed: 11/25/2022]
Abstract
Significant advances over the last few years have seen plant-made pharmaceuticals (PMPs) move from the exploratory research phase towards clinical trials, with the first commercial products for human use expected to reach the market by 2009. Europe has yet to witness the commercial application of PMP technology, although at least one product has begun phase II clinical trials with others following close behind. These emerging products are set to challenge the complex and overlapping regulations that currently govern GM plants and 'conventional' pharmaceutical production. The areas of responsibility are being mapped out between the different EU regulatory agencies, with specific guidelines currently being drawn up for the regulation of PMPs. This article discusses issues surrounding the development of robust risk-assessment and risk-management practices based on health and environmental impact, while working with EU regulatory authorities to ensure appropriate regulatory oversight.
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He DM, Qian KX, Shen GF, Li YN, Zhang ZF, Su ZL, Shao HB. Stable expression of foot-and-mouth disease virus protein VP1 fused with cholera toxin B subunit in the potato (Solanum tuberosum). Colloids Surf B Biointerfaces 2006; 55:159-63. [PMID: 17208421 DOI: 10.1016/j.colsurfb.2006.11.043] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2006] [Revised: 11/15/2006] [Accepted: 11/29/2006] [Indexed: 10/23/2022]
Abstract
The expression vector, pBI121CTBVP1, containing the fusion of the foot and mouth disease virus (FMDV) VP1 gene and the cholera toxin B subunit (CTB) gene was constructed by fused PCR and transferred into potato (Solanum tuberosum L.) by Agrobacterium-mediated transformation. Transformed plants were obtained by selecting on kanamycin-resistant medium strictly and regenerated. The transgenic plantlets were identified by PCR, Southern-blot and the production of fused protein was confirmed and quantified by Western-blot and ELISA assays. The results showed that the fused genes were expressed stablely under the control of specific-tuber patatin promoter. The expressed fused proteins have a certain degree of immunogenicity.
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Affiliation(s)
- Dong-Mei He
- Department of Biotechnology, College of Life Science, Zhejiang University, Hangzhou 310027, China
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Hiroi T, Takaiwa F. Peptide immunotherapy for allergic diseases using a rice-based edible vaccine. Curr Opin Allergy Clin Immunol 2006; 6:455-60. [PMID: 17088651 DOI: 10.1097/01.all.0000246621.34247.fa] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE OF REVIEW Plant pollens are the most common cause of seasonal allergic disease. The number of patients undergoing treatment for allergies to the pollen of Japanese cedar (major antigens: Cry j 1 and Cry j 2) has increased steadily each year. Integration of an effective, safe and inexpensive clinical program would be greatly improved by addressing deficiencies in systemically delivered immunotherapy. RECENT FINDINGS We have demonstrated that feeding mice transgenic rice seeds accumulating the T-cell epitope peptides of Cry j 1 and Cry j 2 before systemic challenge with total protein of cedar pollen inhibits the development of allergen-specific IgE, IgG and CD4 T-cell proliferative responses. The levels of allergen-specific CD4 T-cell-derived allergy-associated T-helper 2 cytokine of IL-4, IL-5, and IL-13 and histamine release in serum were also significantly decreased. Moreover, clinical symptoms were inhibited in an experimental sneezing-mouse model. SUMMARY Plant-based edible vaccine has been shown to be effective for treatment of Japanese cedar pollinosis. When rice seeds containing T-cell epitopes derived from cedar pollen allergens were orally administered to mice, immune tolerance leading to reduction of allergen-specific IgE, T-cell proliferative reaction and histamine could be induced, resulting in suppression of allergic-specific symptoms such as sneezing.
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MESH Headings
- Administration, Oral
- Allergens/administration & dosage
- Allergens/immunology
- Allergens/therapeutic use
- Animals
- Antigens, Plant
- Cell Proliferation/drug effects
- Cryptomeria/immunology
- Cytokines/immunology
- Disease Models, Animal
- Epitopes, T-Lymphocyte/immunology
- Epitopes, T-Lymphocyte/therapeutic use
- Histamine/immunology
- Humans
- Immunoglobulin E/immunology
- Mice
- Oryza/immunology
- Peptides/administration & dosage
- Peptides/immunology
- Plant Proteins/administration & dosage
- Plant Proteins/immunology
- Pollen/immunology
- Rhinitis, Allergic, Seasonal/immunology
- Rhinitis, Allergic, Seasonal/therapy
- Th2 Cells/immunology
- Vaccination
- Vaccines, Edible/administration & dosage
- Vaccines, Edible/immunology
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Affiliation(s)
- Takachika Hiroi
- Department of Allergy and Immunology, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
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43
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Abstract
The oral route is the ideal means of delivering prophylactic and therapeutic vaccines, offering significant advantages over systemic delivery. Most notably, oral delivery is associated with simple administration and improved safety. In addition, unlike systemic immunisation, oral delivery can induce mucosal immune responses. However, the oral route of vaccine delivery is the most difficult because of the numerous barriers posed by the gastrointestinal tract. To facilitate effective immunisation with peptide and protein vaccines, antigens must be protected, uptake enhanced and the innate immune response activated. Numerous delivery systems and adjuvants have been evaluated for oral vaccine delivery, including live vectors, inert particles and bacterial toxins. Although developments in oral vaccines have been disappointing so far, in terms of the generation of products, the availability of a range of novel delivery systems offers much greater hope for the future development of improved oral vaccines.
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Affiliation(s)
- Ed C Lavelle
- Adjuvant Research Group, School of Biochemistry and Immunology, Trinity College, Dublin 2, Ireland.
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Petruccelli S, Otegui MS, Lareu F, Tran Dinh O, Fitchette AC, Circosta A, Rumbo M, Bardor M, Carcamo R, Gomord V, Beachy RN. A KDEL-tagged monoclonal antibody is efficiently retained in the endoplasmic reticulum in leaves, but is both partially secreted and sorted to protein storage vacuoles in seeds. PLANT BIOTECHNOLOGY JOURNAL 2006; 4:511-27. [PMID: 17309727 DOI: 10.1111/j.1467-7652.2006.00200.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Transgenic plants are attractive biological systems for the large-scale production of pharmaceutical proteins. In particular, seeds offer special advantages, such as ease of handling and long-term stable storage. Nevertheless, most of the studies of the expression of antibodies in plants have been performed in leaves. We report the expression of a secreted (sec-Ab) or KDEL-tagged (Ab-KDEL) mutant of the 14D9 monoclonal antibody in transgenic tobacco leaves and seeds. Although the KDEL sequence has little effect on the accumulation of the antibody in leaves, it leads to a higher antibody yield in seeds. sec-Ab(Leaf) purified from leaf contains complex N-glycans, including Lewis(a) epitopes, as typically found in extracellular glycoproteins. In contrast, Ab-KDEL(Leaf) bears only high-mannose-type oligosaccharides (mostly Man 7 and 8) consistent with an efficient endoplasmic reticulum (ER) retention/cis-Golgi retrieval of the antibody. sec-Ab and Ab-KDEL gamma chains purified from seeds are cleaved by proteases and contain complex N-glycans indicating maturation in the late Golgi compartments. Consistent with glycosylation of the protein, Ab-KDEL(Seed) was partially secreted and sorted to protein storage vacuoles (PSVs) in seeds and not found in the ER. This dual targeting may be due to KDEL-mediated targeting to the PSV and to a partial saturation of the vacuolar sorting machinery. Taken together, our results reveal important differences in the ER retention and vacuolar sorting machinery between leaves and seeds. In addition, we demonstrate that a plant-made antibody with triantennary high-mannose-type N-glycans has similar Fab functionality to its counterpart with biantennary complex N-glycans, but the former antibody interacts with protein A in a stronger manner and is more immunogenic than the latter. Such differences could be related to a variable immunoglobulin G (IgG)-Fc folding that would depend on the size of the N-glycan.
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Affiliation(s)
- Silvana Petruccelli
- CIDCA, Fac.Cs Exactas, Universidad Nacional de La Plata, La Plata, Argentina.
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Companjen AR, Florack DEA, Slootweg T, Borst JW, Rombout JHWM. Improved uptake of plant-derived LTB-linked proteins in carp gut and induction of specific humoral immune responses upon infeed delivery. FISH & SHELLFISH IMMUNOLOGY 2006; 21:251-60. [PMID: 16464614 DOI: 10.1016/j.fsi.2005.12.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2005] [Revised: 08/10/2005] [Accepted: 12/08/2005] [Indexed: 05/06/2023]
Abstract
Oral vaccination of fish is an effortless and stress free immunisation method which can be used for almost any age. However, vaccination via the mucosal route does have disadvantages. For example, the vaccine may induce tolerance and has to be protected to escape digestion. Also the vaccine should be efficiently delivered to immune-competent cells in the gut or other lymphoid organs. In addition, it should be cost effective. Here we present a novel fish vaccination model using potato tubers as vaccine production and delivery system. The model vaccines discussed here include fusion proteins consisting of a gut adhesion molecule (LTB) and a viral peptide or green fluorescent protein (GFP) expressed in potato tubers. The adhesion molecule mediates binding to and uptake from the gut, whereas the viral peptide or GFP functions as model vaccine antigen provoking the induction of an immune response. We demonstrate that fusion to LTB facilitates an elevated uptake of the model vaccines in carp gut mucosa. The plant-derived fusion proteins also elicit a specific systemic humoral immune response upon oral application of crude tuber material incorporated into a standard dietary feed pellet. The data presented here show the promising potentials of the plant as a production system for oral vaccines in aquaculture and feed mediated immunisation of fish.
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Affiliation(s)
- A R Companjen
- Cell Biology and Immunology Group, Department of Animal Sciences, PO Box 338, Wageningen University and Research Centre, 6700 AH Wageningen, The Netherlands
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46
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Li HY, Ramalingam S, Chye ML. Accumulation of recombinant SARS-CoV spike protein in plant cytosol and chloroplasts indicate potential for development of plant-derived oral vaccines. Exp Biol Med (Maywood) 2006; 231:1346-52. [PMID: 16946403 DOI: 10.1177/153537020623100808] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Plants are promising candidates as bioreactors for the production of oral recombinant proteins in the biopharmaceutical industry. As an initial step toward provision of an oral vaccine against the severe acute respiratory syndrome coronavirus (SARS-CoV), we have expressed a partial spike (S) protein of SARS-CoV in the cytosol of nuclear-transformed plants and in the chloroplasts of plastid-transformed plants. In the construction of both nuclear and plastid transformation vectors, a 2-kilobase nucleotide sequence encoding amino acids 1-658 of the SARS-CoV spike protein (S1) was modified with nucleotide changes, but not amino acid changes, to optimize codon usage for expression in plants. To investigate the subcellular localization of S1 during transient expression in tobacco leaves, a translational fusion consisting of S1 and the green fluorescent protein (GFP) was generated. Following agroinfiltration of tobacco leaves, analysis by laser confocal scanning microscopy revealed that the S1:GFP fusion protein was localized to the cytosol. In stable transgenic tobacco plants and lettuce plants generated by Agrobacterium-mediated transformation, tobacco and lettuce leaves were observed to express the S1 at high levels from the Cauliflower Mosaic Virus 35S promoter with Northern blot analysis. When the S1 was expressed in transplastomic tobacco, S1 messenger RNA and its corresponding protein were detected on Northern and Western blot analyses, respectively. Our results demonstrate the feasibility of producing S1 in nuclear- and chloroplast-transformed plants, indicating its potential in subsequent development of a plant-derived and safe oral recombinant subunit vaccine against the SARS-CoV in edible plants.
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Affiliation(s)
- Hong-Ye Li
- Department of Botany, The University of Hong Kong, Pokfulam Road, Hong Kong, China
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47
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Abstract
Bioregulators are naturally occurring organic compounds that regulate a multitude of biologic processes. Under natural circumstances, bioregulators are synthesized in minute quantities in a variety of living organisms and are essential for physiologic homeostasis. In the wrong hands, these compounds have the capability to be used as nontraditional threat agents that are covered by the prohibitions of the Chemical Weapons Convention and the Biological and Toxin Weapons Convention. Unlike traditional biowarfare/bioterrorism agents that have a latency period of hours to days,the onset of action of bioregulators may occur within minutes after host exposure. Concerns regarding the potential misuse of bioregulators for nefarious purposes relate to the ability of these nontraditional agents to induce profound physiologic effects.
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Affiliation(s)
- Elliott Kagan
- Department of Pathology, Uniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, MD 20814-4799, USA.
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48
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Abstract
In recent years, with the development of genetics molecular biology and plant biotechnology, the vaccination (e.g. genetic engineering subunit vaccine, living vector vaccine, nucleic acid vaccine) programs are taking on a prosperous evolvement. In particular, the technology of the use of transgenic plants to produce human or animal therapeutic vaccines receives increasing attention. Expressing vaccine candidates in vegetables and fruits open up a new avenue for producing oral/edible vaccines. Transgenic plant vaccine disquisitions exhibit a tempting latent exploiting foreground. There are a lot of advantages for transgenic plant vaccines, such as low cost, easiness of storage, and convenient immune-inoculation. Some productions converged in edible tissues, so they can be consumed directly without isolation and purification. Up to now, many transgenic plant vaccine productions have been investigated and developed. In this review, recent advances on plant-derived recombinant protein expression systems, infectious targets, and delivery systems are presented. Some issues of high concern such as biosafety and public health are also discussed. Special attention is given to the prospects and limitations on transgenic plant vaccines.
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MESH Headings
- Administration, Oral
- Animals
- Bioreactors
- Carica/immunology
- Carica/metabolism
- Edible Grain/immunology
- Edible Grain/metabolism
- Eukaryota/immunology
- Eukaryota/metabolism
- Fruit/immunology
- Fruit/metabolism
- Genetic Vectors
- Humans
- Musa/immunology
- Musa/metabolism
- Plant Viruses/immunology
- Plants, Genetically Modified/immunology
- Plants, Genetically Modified/metabolism
- Recombinant Proteins/biosynthesis
- Vaccines, Edible/administration & dosage
- Vaccines, Edible/biosynthesis
- Vaccines, Edible/genetics
- Vaccines, Edible/immunology
- Vaccines, Subunit/administration & dosage
- Vaccines, Subunit/biosynthesis
- Vaccines, Subunit/genetics
- Vaccines, Subunit/immunology
- Vegetables/immunology
- Vegetables/metabolism
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Affiliation(s)
- Mei Han
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin, China
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49
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Gutiérrez-Ortega A, Sandoval-Montes C, de Olivera-Flores TJ, Santos-Argumedo L, Gómez-Lim MA. Expression of functional interleukin-12 from mouse in transgenic tomato plants. Transgenic Res 2006; 14:877-85. [PMID: 16315093 DOI: 10.1007/s11248-005-1464-8] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2005] [Accepted: 07/28/2005] [Indexed: 01/16/2023]
Abstract
Transgenic plants have been employed successfully as a low-cost system for the production of therapeutically valuable proteins, including antibodies, antigens and hormones. Here, we report the expression of a cytokine with immunomodulatory function, mouse interleukin-12 (IL-12), in transgenic tomato plants. Single-chain mouse IL-12 driven by the CaMV 35S promoter, accumulates to high levels in leaves and fruits (up to 7.3 and 3.4 microg per gram of fresh weight, respectively). Mouse IL-12 expressed in tomato displays biological activity in vitro, as determined by interferon-gamma (IFN-gamma) secretion by T cells. Possible uses of this plant-based cytokine involving mucosal delivery are discussed.
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Affiliation(s)
- Abel Gutiérrez-Ortega
- Departamento de Ingeniería Genética de Plantas, Centro de Investigación y de Estudios Avanzados del IPN, Unidad Irapuato. Km 9.6 Libramiento Norte Carretera Irapuato-León, Guanajuato, México
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50
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Cañizares MC, Liu L, Perrin Y, Tsakiris E, Lomonossoff GP. A bipartite system for the constitutive and inducible expression of high levels of foreign proteins in plants. PLANT BIOTECHNOLOGY JOURNAL 2006; 4:183-93. [PMID: 17177795 DOI: 10.1111/j.1467-7652.2005.00170.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
We have developed combined transgene/virus vector systems for the expression of heterologous proteins in plants. The systems are based on the bipartite RNA plant virus, cowpea mosaic virus (CPMV), and involve the amplification of integrated copies of either full-length or deleted versions of RNA-2 carrying a foreign gene. In the case of plants transgenic for full-length versions of RNA-2 carrying the green fluorescent protein (GFP), amplification can be achieved by supplying RNA-1 either exogenously or by crossing. This allows either inducible or constitutive expression of the foreign gene and results in an infection that can be passaged to further plants. Replication of deleted versions of RNA-2 harbouring GFP requires the presence of both RNA-1 and a suppressor of gene silencing, a function which we show can be supplied by HcPro from potato virus Y. Replication of the deleted versions of RNA-2 can be achieved by supplying the suppressor and RNA-1 either exogenously or by crossing, showing that this system can also be used in an inducible and constitutive format. The use of deleted forms of RNA-2 has the advantage that no infectious virus is produced, providing an effective method of biocontainment. The CPMV-based systems have advantages over existing plant expression systems in terms of the expression levels obtainable and the simplicity and flexibility of use, and should be of great practical benefit in the development of plants as bioreactors.
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