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Chen Y, Xie H, Zou Y, Lai X, Ma L, Liu Y, Li J. Tetracycline-controllable artificial microRNA-HOTAIR + EZH2 suppressed the progression of bladder cancer cells. MOLECULAR BIOSYSTEMS 2017; 13:1597-1607. [PMID: 28671703 DOI: 10.1039/c7mb00202e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Previous studies have suggested that EZH2 is up-regulated in bladder cancer tissues and identified it as a biomarker for poor prognosis. However, the biological functions of EZH2 in bladder cancer cells remain unknown. In this research, we discovered that EZH2 expression is irrelevant to the TNM stage and poor prognosis of bladder cancer patients. But suppression of EZH2 can slowdown the progression of bladder cancer cells. Moreover, we used the technology of synthetic biology to construct the tetracycline-controllable artificial microRNA-HOTAIR + EZH2, which can decrease the expression of HOTAIR and EZH2 in a doxycycline dosage-dependent manner. And we also found that HOTAIR expression was positively correlated with EZH2 expression. Tetracycline-controllable artificial microRNA-HOTAIR + EZH2 can inhibit the proliferation and migration of bladder cancer cells. Meanwhile, the apoptosis rate of bladder cancer cells was increased. Taken together, our research showed the cancer-promoting effects of EZH2 and created a novel method to rescue the development of bladder cancer cells.
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Affiliation(s)
- Yincong Chen
- Shantou University Medical College, Shantou 515041, Guangdong Province, China.
| | - Haibiao Xie
- Shantou University Medical College, Shantou 515041, Guangdong Province, China. and Key Laboratory of Medical Reprogramming Technology, Shenzhen Second People's Hospital, First Affiliated Hospital of Shenzhen University, Shenzhen 518039, Guangdong Province, China
| | - Yifan Zou
- Shantou University Medical College, Shantou 515041, Guangdong Province, China. and Key Laboratory of Medical Reprogramming Technology, Shenzhen Second People's Hospital, First Affiliated Hospital of Shenzhen University, Shenzhen 518039, Guangdong Province, China
| | - Xiulan Lai
- Shantou University Medical College, Shantou 515041, Guangdong Province, China. and Department of Pediatrics, Second Affiliated Hospital of Shantou University Medical College, Shantou 515041, China
| | - Lian Ma
- Shantou University Medical College, Shantou 515041, Guangdong Province, China. and Department of Pediatrics, Second Affiliated Hospital of Shantou University Medical College, Shantou 515041, China
| | - Yuchen Liu
- Key Laboratory of Medical Reprogramming Technology, Shenzhen Second People's Hospital, First Affiliated Hospital of Shenzhen University, Shenzhen 518039, Guangdong Province, China
| | - Jianfa Li
- Shantou University Medical College, Shantou 515041, Guangdong Province, China. and Key Laboratory of Medical Reprogramming Technology, Shenzhen Second People's Hospital, First Affiliated Hospital of Shenzhen University, Shenzhen 518039, Guangdong Province, China
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Rosales-Mendoza S, Ríos-Huerta R, Angulo C. An overview of tuberculosis plant-derived vaccines. Expert Rev Vaccines 2015; 14:877-89. [PMID: 25683476 DOI: 10.1586/14760584.2015.1015996] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Tuberculosis (TB) is a leading fatal infectious disease to which the current BCG vaccine has a questionable efficacy in adults. Thus, the development of improved vaccines against TB is needed. In addition, decreasing the cost of vaccine formulations is required for broader vaccination coverage through global vaccination programs. In this regard, the use of plants as biofactories and delivery vehicles of TB vaccines has been researched over the last decade. These studies are systematically analyzed in the present review and placed in perspective. It is considered that substantial preclinical trials are still required to address improvements in expression levels as well as immunological data. Approaches for testing additional antigenic configurations with higher yields and improved immunogenic properties are also discussed.
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Affiliation(s)
- Sergio Rosales-Mendoza
- Laboratorio de Biofarmacéuticos recombinantes, Facultad de Ciencias Químicas, Universidad Autónoma de San Luis Potosí, Av. Dr. Manuel Nava 6, SLP, 78210, México
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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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Abstract
Synthetic biology is a relatively new field with the key aim of designing and constructing biological systems with novel functionalities. Today, synthetic biology devices are making their first steps in contributing new solutions to a number of biomedical challenges, such as emerging bacterial antibiotic resistance and cancer therapy. This review discusses some synthetic biology approaches and applications that were recently used in disease mechanism investigation and disease modeling, drug discovery and production, as well as vaccine development and treatment of infectious diseases, cancer, and metabolic disorders.
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Affiliation(s)
- Zhanar Abil
- Department of Biochemistry, ‡Department of Chemical and Biomolecular Engineering, and §Department of Bioengineering, Department of Chemistry, Center for Biophysics and Computational Biology and Institute for Genomic Biology, University of Illinois at Urbana-Champaign , 600 South Mathews Avenue, Urbana, Illinois 61801, United States
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Jacob SS, Cherian S, Sumithra TG, Raina OK, Sankar M. Edible vaccines against veterinary parasitic diseases--current status and future prospects. Vaccine 2013; 31:1879-85. [PMID: 23485715 DOI: 10.1016/j.vaccine.2013.02.022] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2013] [Revised: 02/02/2013] [Accepted: 02/11/2013] [Indexed: 12/17/2022]
Abstract
Protection of domestic animals against parasitic infections remains a major challenge in most of the developing countries, especially in the surge of drug resistant strains. In this circumstance vaccination seems to be the sole practical strategy to combat parasites. Most of the presently available live or killed parasitic vaccines possess many disadvantages. Thus, expression of parasitic antigens has seen a continued interest over the past few decades. However, only a limited success was achieved using bacterial, yeast, insect and mammalian expression systems. This is witnessed by an increasing number of reports on transgenic plant expression of previously reported and new antigens. Oral delivery of plant-made vaccines is particularly attractive due to their exceptional advantages. Moreover, the regulatory burden for veterinary vaccines is less compared to human vaccines. This led to an incredible investment in the field of transgenic plant vaccines for veterinary purpose. Plant based vaccine trials have been conducted to combat various significant parasitic diseases such as fasciolosis, schistosomosis, poultry coccidiosis, porcine cycticercosis and ascariosis. Besides, passive immunization by oral delivery of antibodies expressed in transgenic plants against poultry coccidiosis is an innovative strategy. These trials may pave way to the development of promising edible veterinary vaccines in the near future. As the existing data regarding edible parasitic vaccines are scattered, an attempt has been made to assemble the available literature.
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Affiliation(s)
- Siju S Jacob
- Division of Parasitology, Indian Veterinary Research Institute, Izatnagar 243122, UP, India.
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Mikschofsky H, Broer I. Feasibility of Pisum sativum as an expression system for pharmaceuticals. Transgenic Res 2012; 21:715-24. [PMID: 22057506 DOI: 10.1007/s11248-011-9573-z] [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: 02/05/2011] [Accepted: 10/20/2011] [Indexed: 12/15/2022]
Abstract
Based on its high protein content and excellent storage capacity, pea (Pisum sativum), as well as other plants, is considered to be a suitable production platform for protein-based pharmaceuticals. Its capacity to produce high proportions of active recombinant proteins (up to 2% total soluble protein corresponding to approximately 8 mg/g fresh weight) has been proven using pea-derived strong seed-specific promoters. The active antigens produced were also stable for more than 4 years. Pea can be used as a feed additive, up to a proportion of 30% to total feed, despite the presence of lectins. Thus, a low dosage of recombinant pea-based pharmaceuticals is non-hazardous. In addition, it is independent of N-fertilisation, has excellent biosafety characteristics and is accessible to gene transfer. Growth systems with a capacity for high yield are available for the greenhouse (5 t/ha) and, to a limited extent, also in the field (2.3 t/ha). The practicable establishment of pea seed banks allows a continuous production process. Although the use of a pea system is limited by complex transformation procedures, these advantages render pea a promising plant for the production of pharmaceuticals.
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Affiliation(s)
- Heike Mikschofsky
- Agrobiotechnology, University of Rostock, Justus-von-Liebig-Weg 8, 18059 Rostock, Germany.
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Azizi A, Kumar A, Diaz-Mitoma F, Mestecky J. Enhancing oral vaccine potency by targeting intestinal M cells. PLoS Pathog 2010; 6:e1001147. [PMID: 21085599 PMCID: PMC2978714 DOI: 10.1371/journal.ppat.1001147] [Citation(s) in RCA: 125] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
The immune system in the gastrointestinal tract plays a crucial role in the control of infection, as it constitutes the first line of defense against mucosal pathogens. The attractive features of oral immunization have led to the exploration of a variety of oral delivery systems. However, none of these oral delivery systems have been applied to existing commercial vaccines. To overcome this, a new generation of oral vaccine delivery systems that target antigens to gut-associated lymphoid tissue is required. One promising approach is to exploit the potential of microfold (M) cells by mimicking the entry of pathogens into these cells. Targeting specific receptors on the apical surface of M cells might enhance the entry of antigens, initiating the immune response and consequently leading to protection against mucosal pathogens. In this article, we briefly review the challenges associated with current oral vaccine delivery systems and discuss strategies that might potentially target mouse and human intestinal M cells.
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Affiliation(s)
- Ali Azizi
- Infectious Disease and Vaccine Research Center, Children's Hospital of Eastern Ontario Research Institute, Ottawa, Ontario, Canada.
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Alvarez ML, Cardineau GA. Prevention of bubonic and pneumonic plague using plant-derived vaccines. Biotechnol Adv 2010; 28:184-96. [PMID: 19931370 DOI: 10.1016/j.biotechadv.2009.11.006] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2009] [Revised: 11/09/2009] [Accepted: 11/10/2009] [Indexed: 01/14/2023]
Abstract
Yersinia pestis, the causative agent of bubonic and pneumonic plague, is an extremely virulent bacterium but there are currently no approved vaccines for protection against this organism. Plants represent an economical and safer alternative to fermentation-based expression systems for the production of therapeutic proteins. The recombinant plague vaccine candidates produced in plants are based on the two most immunogenic antigens of Y. pestis: the fraction-1 capsular antigen (F1) and the low calcium response virulent antigen (V) either in combination or as a fusion protein (F1-V). These antigens have been expressed in plants using all three known possible strategies: nuclear transformation, chloroplast transformation and plant-virus-based expression vectors. These plant-derived plague vaccine candidates were successfully tested in animal models using parenteral, oral, or prime/boost immunization regimens. This review focuses on the recent research accomplishments towards the development of safe and effective pneumonic and bubonic plague vaccines using plants as bioreactors.
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Affiliation(s)
- M Lucrecia Alvarez
- Center for Infectious Diseases and Vaccinology, The Biodesign Institute at Arizona State University, 1001 South McAllister Avenue, Tempe, AZ 85287-5401, USA.
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Mikschofsky H, Schirrmeier H, Keil GM, Lange B, Polowick PL, Keller W, Broer I. Pea-derived vaccines demonstrate high immunogenicity and protection in rabbits against rabbit haemorrhagic disease virus. PLANT BIOTECHNOLOGY JOURNAL 2009; 7:537-49. [PMID: 19486322 DOI: 10.1111/j.1467-7652.2009.00422.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Vaccines against rabbit haemorrhagic disease virus (RHDV) are commercially produced in experimentally infected rabbits. A genetically engineered and manufactured version of the major structural protein of RHDV (VP60) is considered to be an alternative approach for vaccine production. Plants have the potential to become an excellent recombinant production system, but the low expression level and insufficient immunogenic potency of plant-derived VP60 still hamper its practical use. In this study, we analysed the expression of a novel multimeric VP60-based antigen in four different plant species, including Nicotiana tabacum L., Solanum tuberosum L., Brassica napus L. and Pisum sativum L. Significant differences were detected in the expression patterns of the novel fusion antigen cholera toxin B subunit (CTB)::VP60 (ctbvp60(SEKDEL)) at the mRNA and protein levels. Pentameric CTB::VP60 molecules were only detected in N. tabacum and P. sativum, and displayed equal levels of CTB, at approximately 0.01% of total soluble protein (TSP), and traces of detectable VP60. However, strong enhancement of the CTB protein content via self-fertilization was only observed in P. sativum, where it reached up to 0.7% of TSP. In rabbits, a strong decrease in the protective vaccine dose required from 48-400 microg potato-derived VP60 [Castanon, S., Marin, M.S., Martin-Alonso, J.M., Boga, J.A., Casais, R., Humara, J.M., Ordas, R.J. and Parra, F. (1999) Immunization with potato plants expressing VP60 protein protects against rabbit hemorrhagic disease virus. J. Virol. 73, 4452-4455; Castanon, S., Martin-Alonso, J.M., Marin, M.S., Boga, J.A., Alonso, P., Parra, F. and Ordas, R.J. (2002) The effect of the promoter on expression of VP60 gene from rabbit hemorrhagic disease virus in potato plants. Plant Sci. 162, 87-95] to 0.56-0.28 microg antigenic VP60 (measured with VP60 enzyme-linked immunosorbent assay) of crude CTB::VP60 pea extracts was demonstrated. Rabbits immunized with pea-derived CTB::VP60 showed anti-VP60-specific antibodies, similar to RikaVacc((R))-immunized rabbits, and survived RHDV challenge.
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Affiliation(s)
- Heike Mikschofsky
- Agrobiotechnologie, Universität Rostock, Justus-von-Liebig-Weg 8, 18059 Rostock, Germany.
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Matsumoto Y, Suzuki S, Nozoye T, Yamakawa T, Takashima Y, Arakawa T, Tsuji N, Takaiwa F, Hayashi Y. Oral immunogenicity and protective efficacy in mice of transgenic rice plants producing a vaccine candidate antigen (As16) of Ascaris suum fused with cholera toxin B subunit. Transgenic Res 2008; 18:185-92. [PMID: 18763047 DOI: 10.1007/s11248-008-9205-4] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2008] [Accepted: 07/08/2008] [Indexed: 11/25/2022]
Abstract
Cereal crops such as maize and rice are considered attractive for vaccine production and oral delivery. Here, we evaluated the rice Oryza sativa for production of As16-an antigen protective against the roundworm Ascaris suum. The antigen was produced as a chimeric protein fused with cholera toxin B subunit (CTB), and its expression level in the endosperm reached 50 microg/g seed. Feeding the transgenic (Tg) rice seeds to mice elicited an As16-specific serum antibody response when administered in combination with cholera toxin (CT) as the mucosal adjuvant. Although omitting the adjuvant from the vaccine formulation resulted in failure to develop the specific immune response, subcutaneous booster immunization with bacterially expressed As16 induced the antibody response, indicating priming capability of the Tg rice. Tg rice/CT-fed mice orally administered A. suum eggs had a lower lung worm burden than control mice. This suggests that the rice-delivered antigen functions as a prophylactic edible vaccine for controlling parasitic infection in animals.
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Affiliation(s)
- Yasunobu Matsumoto
- Laboratory of Global Animal Resource Science, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan.
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Floss DM, Falkenburg D, Conrad U. Production of vaccines and therapeutic antibodies for veterinary applications in transgenic plants: an overview. Transgenic Res 2007; 16:315-32. [PMID: 17436059 PMCID: PMC7089296 DOI: 10.1007/s11248-007-9095-x] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2007] [Accepted: 03/19/2007] [Indexed: 11/29/2022]
Abstract
During the past two decades, antibodies, antibody derivatives and vaccines have been developed for therapeutic and diagnostic applications in human and veterinary medicine. Numerous species of dicot and monocot plants have been genetically modified to produce antibodies or vaccines, and a number of diverse transformation methods and strategies to enhance the accumulation of the pharmaceutical proteins are now available. Veterinary applications are the specific focus of this article, in particular for pathogenic viruses, bacteria and eukaryotic parasites. We focus on the advantages and remaining challenges of plant-based therapeutic proteins for veterinary applications with emphasis on expression platforms, technologies and economic considerations.
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Affiliation(s)
- Doreen Manuela Floss
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, Gatersleben, 06466 Germany
| | | | - Udo Conrad
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, Gatersleben, 06466 Germany
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