1
|
Reggi S, Dell'Anno M, Baldi A, Rossi L. Seed-specific expression of porcine verotoxigenic Escherichia coli antigens in tobacco plants as a potential model of edible vaccines. Vet Res Commun 2024; 48:1435-1447. [PMID: 38319502 PMCID: PMC11147939 DOI: 10.1007/s11259-024-10318-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 01/27/2024] [Indexed: 02/07/2024]
Abstract
Vaccines can reduce the use of antibiotics by preventing specific infective diseases in pigs. Plant-based edible vaccines are particularly attractive because, upon oral ingestion via feed, they can elicit the local immune system against a foreign disease-causing organism. The aim of this study was to engineer two different independent lines of tobacco plants for the seed-specific expression of immunogenic proteins of VTEC as a model of an edible vaccine. For each antigen, fifty Nicotiana tabacum L. cv Xanthi leaf disks were transformed by agroinfection for the seed-specific expression of the structural parts of the fimbrial subunit FedF of F18 and the B-subunit of Vt2e genes. The synthetic genes, optimized by the codon adaptation index for their expression in tobacco, were inserted into expression cassettes under the control of β-conglycinin promoter. Regenerated tobacco plants (T0) were characterized by molecular and immunoenzymatic techniques. Our results showed that both FedF and Vt2eB genes were integrated into tobacco genome efficiently (> 80%) and they are also maintained in the second generation (T1). Western blotting analyses carried out on the positive producing lines, showed the tissue-specific expression in seeds and the temporal protein accumulation in the mid-late maturation phases. The enzyme-linked immunosorbent assay showed seed expression levels of 0.09 to 0.29% (from 138 to 444 µg/g of seeds) and 0.21 to 0.43% (from 321 to 658 µg/g of seeds) of total soluble protein for the FedF and Vt2eB antigens, respectively. This study confirmed the seed-specific expression of the selected antigens in plant seeds. The expression level is suitable for seed-based edible vaccination systems, which could represent a cost-effective way to prevent VTEC infection. Our findings encourage further in vivo studies focused on the activation of the local immune response.
Collapse
Affiliation(s)
- Serena Reggi
- Department of Veterinary Medicine and Animal Sciences - DIVAS, University of Milan, Lodi, 26900, Italy
| | - Matteo Dell'Anno
- Department of Veterinary Medicine and Animal Sciences - DIVAS, University of Milan, Lodi, 26900, Italy
| | - Antonella Baldi
- Department of Veterinary Medicine and Animal Sciences - DIVAS, University of Milan, Lodi, 26900, Italy
| | - Luciana Rossi
- Department of Veterinary Medicine and Animal Sciences - DIVAS, University of Milan, Lodi, 26900, Italy.
| |
Collapse
|
2
|
Sá GCDAS, Gadelha TS, Fragoso SP, Pacheco MTB, Lima EDEO, Rocha HADEO, Uchôa AF, Gadelha CADEA. Protein fraction from Sesbania virgata (Cav.) Pers. seeds exhibit antioxidant and antifungal activities. AN ACAD BRAS CIENC 2024; 96:e20230043. [PMID: 38808874 DOI: 10.1590/0001-3765202420230043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 02/21/2024] [Indexed: 05/30/2024] Open
Abstract
Sesbania virgata (Cav.) Pers. seeds are protein sources with health and environmental benefits. In this research, proteins with lectin activity were identified in a protein fraction from S. virgata seeds (PFLA), as well its antioxidant and antimicrobial potentials, in addition to cytotoxic effects. To obtain PFLA, seed flour was homogenized in Glycine-NaOH (100 mM; pH 9.0; NaCl 150 mM) and precipitated in ammonium sulfate. PFLA concentrates bioactive lectins (32 HU/mL, 480 HU/gFa, 18.862 HU/mgP) and essential amino acids (13.36 g/100g protein). PFLA exerts antioxidant activity, acting as a promising metal chelating agent (~77% of activity). Analyzes of cell culture assay results suggest that antioxidant activity of PFLA may be associated with the recruitment of essential molecules to prevent the metabolic impairment of cells exposed to oxidative stress. PFLA (256 - 512 µg/mL) also exhibits antifungal activity, inhibiting the growth of Aspergillus flavus, Candida albicans, Candida tropicalis and Penicillium citrinum. Cytotoxic analysis indicates a tendency of low interference in the proliferation of 3T3 and HepG2 cells in the range of PFLA concentrations with biological activity. These findings support the notion that PFLA is a promising adjuvant to be applied in current policies on the management of metal ion chelation and fungal infections.
Collapse
Affiliation(s)
- Giulian César DA S Sá
- Universidade Federal do Sul e Sudeste do Pará, Folha 17, Quadra 04, Lote Especial, s/n, Nova Marabá, 68505-080 Marabá, PA, Brazil
| | - Tatiane S Gadelha
- Universidade Federal da Paraíba, Departamento de Biologia Molecular, Laboratório de Química de Proteínas e Peptídeos, Conjunto Presidente Castelo Branco III, 58050-585 João Pessoa, PB, Brazil
| | - Sinara P Fragoso
- Universidade Federal da Paraíba, Departamento de Engenharia de Alimentos, Campus Universitário III, Rua João Pessoa, s/n, 58220-000 Bananeiras, PB, Brazil
| | - Maria Teresa B Pacheco
- Instituto de Tecnologia de Alimentos, Av. Brasil, 2880, Vila Nova, 13070-178 Campinas, SP, Brazil
| | - Edeltrudes DE O Lima
- Universidade Federal da Paraíba, Departamento de Ciências Farmacêuticas, Laboratório de Atividades Antibacterianas e Antifúngicas de Produtos Bioativos Naturais e/ou Sintéticos, Conjunto Presidente Castelo Branco III, 58051-085 João Pessoa, PB, Brazil
| | - Hugo Alexandre DE O Rocha
- Universidade Federal do Rio Grande do Norte, Departamento de Bioquímica, Laboratório de Biotecnologia de Polímeros Naturais, Av. Passeio dos Girassóis, 655, Capim Macio, 59078-970 Natal, RN, Brazil
| | - Adriana F Uchôa
- Universidade Federal do Rio Grande do Norte, Departamento de Biologia Celular e Genética, Instituto de Medicina Tropical do Rio Grande do Norte, Laboratório de Proteomas e Micologia, Av. Passeio dos Girassóis, 655, Capim Macio, 59078-970 Natal, RN, Brazil
| | - Carlos Alberto DE A Gadelha
- Universidade Federal da Paraíba, Departamento de Biologia Molecular, Laboratório de Proteômica Estrutural, Conjunto Presidente Castelo Branco III, 58050-585 João Pesso, PB, Brazil
| |
Collapse
|
3
|
Feng Z, Li X, Fan B, Zhu C, Chen Z. Maximizing the Production of Recombinant Proteins in Plants: From Transcription to Protein Stability. Int J Mol Sci 2022; 23:13516. [PMID: 36362299 PMCID: PMC9659199 DOI: 10.3390/ijms232113516] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 10/31/2022] [Accepted: 11/01/2022] [Indexed: 11/07/2023] Open
Abstract
The production of therapeutic and industrial recombinant proteins in plants has advantages over established bacterial and mammalian systems in terms of cost, scalability, growth conditions, and product safety. In order to compete with these conventional expression systems, however, plant expression platforms must have additional economic advantages by demonstrating a high protein production yield with consistent quality. Over the past decades, important progress has been made in developing strategies to increase the yield of recombinant proteins in plants by enhancing their expression and reducing their degradation. Unlike bacterial and animal systems, plant expression systems can utilize not only cell cultures but also whole plants for the production of recombinant proteins. The development of viral vectors and chloroplast transformation has opened new strategies to drastically increase the yield of recombinant proteins from plants. The identification of promoters for strong, constitutive, and inducible promoters or the tissue-specific expression of transgenes allows for the production of recombinant proteins at high levels and for special purposes. Advances in the understanding of RNAi have led to effective strategies for reducing gene silencing and increasing recombinant protein production. An increased understanding of protein translation, quality control, trafficking, and degradation has also helped with the development of approaches to enhance the synthesis and stability of recombinant proteins in plants. In this review, we discuss the progress in understanding the processes that control the synthesis and degradation of gene transcripts and proteins, which underlie a variety of developed strategies aimed at maximizing recombinant protein production in plants.
Collapse
Affiliation(s)
- Ziru Feng
- College of Life Sciences, China Jiliang University, Hangzhou 310018, China
| | - Xifeng Li
- College of Life Sciences, China Jiliang University, Hangzhou 310018, China
| | - Baofang Fan
- Department of Botany and Plant Pathology, Purdue Center for Plant Biology, Purdue University, West Lafayette, IN 47907-2054, USA
| | - Cheng Zhu
- College of Life Sciences, China Jiliang University, Hangzhou 310018, China
| | - Zhixiang Chen
- College of Life Sciences, China Jiliang University, Hangzhou 310018, China
- Department of Botany and Plant Pathology, Purdue Center for Plant Biology, Purdue University, West Lafayette, IN 47907-2054, USA
| |
Collapse
|
4
|
Rozov SM, Deineko EV. Increasing the Efficiency of the Accumulation of Recombinant Proteins in Plant Cells: The Role of Transport Signal Peptides. PLANTS (BASEL, SWITZERLAND) 2022; 11:2561. [PMID: 36235427 PMCID: PMC9572730 DOI: 10.3390/plants11192561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 09/23/2022] [Accepted: 09/26/2022] [Indexed: 06/16/2023]
Abstract
The problem with increasing the yield of recombinant proteins is resolvable using different approaches, including the transport of a target protein to cell compartments with a low protease activity. In the cell, protein targeting involves short-signal peptide sequences recognized by intracellular protein transport systems. The main systems of the protein transport across membranes of the endoplasmic reticulum and endosymbiotic organelles are reviewed here, as are the major types and structure of the signal sequences targeting proteins to the endoplasmic reticulum and its derivatives, to plastids, and to mitochondria. The role of protein targeting to certain cell organelles depending on specific features of recombinant proteins and the effect of this targeting on the protein yield are discussed, in addition to the main directions of the search for signal sequences based on their primary structure. This knowledge makes it possible not only to predict a protein localization in the cell but also to reveal the most efficient sequences with potential biotechnological utility.
Collapse
|
5
|
David Troncoso F, Alberto Sánchez D, Luján Ferreira M. Production of Plant Proteases and New Biotechnological Applications: An Updated Review. Chemistry 2022; 11:e202200017. [PMID: 35286022 PMCID: PMC8919702 DOI: 10.1002/open.202200017] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 02/21/2022] [Indexed: 12/14/2022]
Abstract
An updated review of emerging plant proteases with potential biotechnological application is presented. Plant proteases show comparable or even greater performance than animal or microbial proteases for by‐product valorization through hydrolysis for, for example, cheese whey, bird feathers, collagen, keratinous materials, gelatin, fish protein, and soy protein. Active biopeptides can be obtained as high added value products, which have shown numerous beneficial effects on human health. Plant proteases can also be used for wastewater treatment. The production of new plant proteases is encouraged for the following advantages: low cost of isolation using simple procedures, remarkable stability over a wide range of operating conditions (temperature, pH, salinity, and organic solvents), substantial affinity to a broad variety of substrates, and possibility of immobilization. Vegetable proteases have enormous application potential for the valorization of industrial waste and its conversion into products with high added value through low‐cost processes.
Collapse
Affiliation(s)
- Franco David Troncoso
- Departamento de Ingeniería Química, Universidad Nacional del Sur (UNS), Bahía Blanca, 8000, Argentina.,Planta Piloto de Ingeniería Química, PLAPIQUI (UNS-CONICET), Bahía Blanca, 8000, Argentina
| | - Daniel Alberto Sánchez
- Departamento de Ingeniería Química, Universidad Nacional del Sur (UNS), Bahía Blanca, 8000, Argentina.,Planta Piloto de Ingeniería Química, PLAPIQUI (UNS-CONICET), Bahía Blanca, 8000, Argentina
| | - María Luján Ferreira
- Departamento de Química, Universidad Nacional del Sur (UNS), Bahía Blanca, 8000, Argentina.,Planta Piloto de Ingeniería Química, PLAPIQUI (UNS-CONICET), Bahía Blanca, 8000, Argentina
| |
Collapse
|
6
|
Khan MS. Recombinant Proteins: Emerging Production Trends and Applications. Protein Pept Lett 2020; 27:87-88. [DOI: 10.2174/092986652702191216112811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Muhammad Sarwar Khan
- Centre of Agricultural Biochemistry and Biotechnology (CABB) University of Agriculture University Road, P. O. Box 38000 Faisalabad, Pakistan
| |
Collapse
|