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Almeida AM, Costa D, Simões AR, Queiroz JA, Sousa F, Sousa Â. Enhancement of a biotechnological platform for the purification and delivery of a human papillomavirus supercoiled plasmid DNA vaccine. N Biotechnol 2020; 59:1-9. [PMID: 32622863 DOI: 10.1016/j.nbt.2020.04.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 03/30/2020] [Accepted: 04/13/2020] [Indexed: 01/21/2023]
Abstract
New biotechnological strategies are being explored, aimed at rapid and economic manufacture of large quantities of DNA vaccines with the required purity for therapeutic applications, as well as their correct delivery as biopharmaceuticals to target cells. This report describes the purification of supercoiled (sc) HPV-16 E6/E7 plasmid DNA (pDNA) vaccine from a bacterial lysate, using an arginine-based monolith, presenting a spacer arm in its configuration. To enhance the performance of the purification process, monolith modification with the spacer arm can improve accessibility of the arginine ligand. By using a low NaCl concentration at pH 7.0, a condition to eliminate the RNA impurity directly in the flow through was established. The pH increase to 7.5 allowed the elimination of non-functional pDNA isoforms, the sc pDNA being recovered by increasing the ionic strength. As well as a binding capacity of 2.53 mg/mL obtained with a pre-purified sc pDNA sample, the column also purified sc pDNA from high lysate loading, with capacities above 1 mg/mL. Due to the sample displacement phenomena, non-functional pDNA isoforms were eliminated throughout column loading, favoring the degree of purity of final sc pDNA of 93.3%-98.5%. Thereafter, purified sc pDNA was successfully encapsulated into CaCO3-gelatin nano-complexes. Delivery of the pDNA-carriers to THP-1 cells was assessed through pDNA cellular uptake evaluation and correct E6 expression was verified by mRNA and protein detection. A biotechnological platform was established for sc pDNA purification and delivery to dendritic cells, stimulating further in vivo studies.
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Affiliation(s)
- Ana M Almeida
- CICS-UBI - Health Sciences Research Centre, University of Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal
| | - Diana Costa
- CICS-UBI - Health Sciences Research Centre, University of Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal
| | - Ana R Simões
- CICS-UBI - Health Sciences Research Centre, University of Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal
| | - João A Queiroz
- CICS-UBI - Health Sciences Research Centre, University of Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal
| | - Fani Sousa
- CICS-UBI - Health Sciences Research Centre, University of Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal
| | - Ângela Sousa
- CICS-UBI - Health Sciences Research Centre, University of Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal.
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Silva-Santos AR, Rosa SS, Prazeres DMF, Azevedo AM. Purification of Plasmid DNA by Multimodal Chromatography. Methods Mol Biol 2020; 2197:193-205. [PMID: 32827138 DOI: 10.1007/978-1-0716-0872-2_10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Abstract
Multimodal (MM) chromatography can be described as a chromatographic method that uses more than one mode of interaction between the target molecule and the ligand to achieve a particular separation. Owing to its advantages over traditional chromatography, such as higher selectivity and capacity, its application for the purification of biomolecules with therapeutic interest has been widely studied. The potential of MM chromatography for the purification of plasmid DNA has been demonstrated. In this chapter, a downstream process for the purification of supercoiled plasmid DNA using MM chromatography with two different ligands-Capto™ adhere and PPA HyperCell™-is described. In both the cases, the purification process yields a high purity and highly homogeneous sc plasmid product.
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Affiliation(s)
- A Rita Silva-Santos
- Department of Bioengineering, Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
| | - Sara Sousa Rosa
- Department of Bioengineering, Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
| | - Duarte Miguel F Prazeres
- Department of Bioengineering, Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
| | - Ana M Azevedo
- Department of Bioengineering, Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal.
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Quality assessment of supercoiled minicircle DNA by cadaverine-modified analytical chromatographic monolith. J Pharm Biomed Anal 2020; 180:113037. [DOI: 10.1016/j.jpba.2019.113037] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 12/05/2019] [Accepted: 12/07/2019] [Indexed: 01/19/2023]
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John Ho LS, Fogel R, Limson JL. Generation and screening of histamine-specific aptamers for application in a novel impedimetric aptamer-based sensor. Talanta 2020; 208:120474. [DOI: 10.1016/j.talanta.2019.120474] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 10/11/2019] [Accepted: 10/12/2019] [Indexed: 01/29/2023]
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Effect of Chromatographic Conditions on Supercoiled Plasmid DNA Stability and Bioactivity. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9235170] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The dysfunction of the tumor suppressor gene TP53 has been associated with the pathogenesis of the majority of the cases of cancer reported to date, leading the cell to acquire different features known as the cancer hallmarks. In normal situations, the protein p53 protects the cells against tumorigenesis. By detecting metabolic stress or DNA damage in response to stress, p53 can lead the cell to senescence, autophagy, cell cycle arrest, DNA repair, and apoptosis. Thus, in the case of p53 mutations, it is reasonable to assume that the reestablishment of its function, may restrain the proliferation of cancer cells. The concept of cancer gene therapy can be based on this assumption, and suitable biotechnological approaches must be explored to assure the preparation of gene-based biopharmaceuticals. Although numerous procedures have already been established to purify supercoiled plasmid DNA (sc pDNA), the therapeutic application is highly dependent on the biopharmaceutical’s activity, which can be affected by the chromatographic conditions used. Thus, the present work aims at comparing quality and in vitro activity of the supercoiled (sc) isoform of the p53 encoding plasmid purified by three different amino acids-based chromatographic strategies, involving histidine–agarose, arginine–macroporous, and histidine–monolith supports. The B-DNA topology was maintained in all purified pDNA samples, but their bioactivity, related to the induction of protein p53 expression and apoptosis in cancer cells, was higher with arginine–macroporous support, followed by histidine–monolith and histidine–agarose. Despite the purity degree of 92% and recovery yield of 43% obtained with arginine–macroporous, the sc pDNA sample led to a higher expression level of the therapeutic p53 protein (58%) and, consequently, induced a slightly higher apoptotic effect (27%) compared with sc pDNA samples obtained with histidine–monolithic support (26%) and histidine–agarose support (24%). This behavior can be related to the mild chromatographic conditions used with arginine–macroporous support, which includes the use of low salt concentrations, at neutral pH and lower temperatures, when compared to the high ionic strength of ammonium sulfate and acidic pH used with histidine-based supports. These results can contribute to field of biopharmaceutical preparation, emphasizing the need to control several experimental conditions while adapting and selecting the methodologies that enable the use of milder conditions as this can have a significant impact on pDNA stability and biological activity.
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Almeida AM, Queiroz JA, Sousa F, Sousa A. Minicircle DNA purification: Performance of chromatographic monoliths bearing lysine and cadaverine ligands. J Chromatogr B Analyt Technol Biomed Life Sci 2019; 1118-1119:7-16. [PMID: 31005775 DOI: 10.1016/j.jchromb.2019.04.024] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Revised: 03/11/2019] [Accepted: 04/11/2019] [Indexed: 12/28/2022]
Abstract
Minicircle DNA (mcDNA) technology is in the vanguard of vectors designed for gene therapy, since the absence of prokaryotic sequences confers to mcDNA higher biosafety in comparison to other DNA vectors. However, the presence of other isoforms and non-recombined parental molecules hampers the isolation of supercoiled (sc) mcDNA with the chromatographic methods already established for plasmid purification. In this work, two monolithic supports were modified with lysine and its decarboxylated derivative, cadaverine, to explore their performance in the sc mcDNA purification. Increasing NaCl gradients and different pH values (from 6 to 9) were tested in both modified monoliths. In general, cadaverine modified support established stronger interactions with mcDNA than lysine modified monolith, at acidic pH. For instance, at pH 6.0 the retention time for RNA and DNA molecules in lysine modified monolith was 11.58 and 14.59, respectively, while for cadaverine modified monolith was 20.32 and 27.12, respectively. The lysine modified monolith was able to successfully isolate sc mcDNA from the lysate sample. However, recovery yield was significantly sacrificed to guarantee high purity levels of sc mcDNA. The cadaverine modified monolith showed better selectivity than the previous monolith, achieving the successful sc mcDNA isolation from the lysate sample. The final sc mcDNA sample, obtained by the column that showed the best performance, was characterized by real-time PCR, presenting 98.4% purity and 78.6% recovery yield. The impurities content, namely genomic DNA, proteins and endotoxins, was found within the criteria established by regulatory agencies. Overall, a simple and practical chromatographic strategy to purify sc mcDNA was for the first time implemented by exploring a modified monolithic column, with no significant reduction on the purity and recovery and without resorting to backbone modification or specific enzymatic digestion. Such features will surely be crucial in the industrial scale-up of this chromatographic strategy since it will not be associated with significant cost-increase.
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Affiliation(s)
- A M Almeida
- CICS-UBI - Centro de Investigação em Ciências da Saúde, Universidade da Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal
| | - J A Queiroz
- CICS-UBI - Centro de Investigação em Ciências da Saúde, Universidade da Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal
| | - F Sousa
- CICS-UBI - Centro de Investigação em Ciências da Saúde, Universidade da Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal
| | - A Sousa
- CICS-UBI - Centro de Investigação em Ciências da Saúde, Universidade da Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal.
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Arginine homopeptides for plasmid DNA purification using monolithic supports. J Chromatogr B Analyt Technol Biomed Life Sci 2018; 1087-1088:149-157. [DOI: 10.1016/j.jchromb.2018.04.031] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 04/11/2018] [Accepted: 04/15/2018] [Indexed: 12/15/2022]
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Abdulrahman A, Ghanem A. Recent advances in chromatographic purification of plasmid DNA for gene therapy and DNA vaccines: A review. Anal Chim Acta 2018; 1025:41-57. [PMID: 29801607 DOI: 10.1016/j.aca.2018.04.001] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Revised: 04/03/2018] [Accepted: 04/05/2018] [Indexed: 12/16/2022]
Abstract
The wide spread of infectious diseases have provoked the scientists to develop new types of vaccines. Among the different types of vaccines, the recently discovered plasmid DNA vaccines, have gained tremendous attentions in the last few decades as a modern approach of vaccination. The scientific interest in plasmid DNA vaccines is attributed to their prominent efficacy as they trigger not only the cellular immune response but also the humoral immune responses. Moreover, pDNA vaccines are easily to be stored, shipped and produced. However, the purification of the pDNA vaccines is a crucial step in their production and administration, which is usually conducted by different chromatographic techniques. This review summarizes the most recent chromatographic purification methods provided in the literature during the last five years following our last review in 2013, including affinity chromatography, hydrophobic interaction chromatography, ion exchange chromatography, multimodal chromatography, sample displacement chromatography and miscellaneous chromatographic methods.
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Affiliation(s)
- Ahmed Abdulrahman
- Chirality Program, Faculty of Science and Technology, University of Canberra, Australian Capital Territory (ACT), 2617, Australia
| | - Ashraf Ghanem
- Chirality Program, Faculty of Science and Technology, University of Canberra, Australian Capital Territory (ACT), 2617, Australia. http://www.chiralitygroup.com
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Amorim LFA, Gaspar R, Pereira P, Černigoj U, Sousa F, Queiroz JA, Sousa Â. Chromatographic HPV-16 E6/E7 plasmid vaccine purification employing L-histidine and 1-benzyl-L-histidine affinity ligands. Electrophoresis 2017; 38:2975-2980. [DOI: 10.1002/elps.201700147] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Revised: 06/09/2017] [Accepted: 06/16/2017] [Indexed: 01/01/2023]
Affiliation(s)
- Lúcia F. A. Amorim
- CICS-UBI - Centro de Investigação em Ciências da Saúde; Universidade da Beira Interior; Covilhã Portugal
| | - Rita Gaspar
- CICS-UBI - Centro de Investigação em Ciências da Saúde; Universidade da Beira Interior; Covilhã Portugal
| | - Patrícia Pereira
- CICS-UBI - Centro de Investigação em Ciências da Saúde; Universidade da Beira Interior; Covilhã Portugal
| | | | - Fani Sousa
- CICS-UBI - Centro de Investigação em Ciências da Saúde; Universidade da Beira Interior; Covilhã Portugal
| | - João António Queiroz
- CICS-UBI - Centro de Investigação em Ciências da Saúde; Universidade da Beira Interior; Covilhã Portugal
| | - Ângela Sousa
- CICS-UBI - Centro de Investigação em Ciências da Saúde; Universidade da Beira Interior; Covilhã Portugal
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Diamantino T, Pereira P, Queiroz JA, Sousa Â, Sousa F. Minicircle DNA purification using a CIM® DEAE‐1 monolithic support. J Sep Sci 2016; 39:3544-9. [DOI: 10.1002/jssc.201600375] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Revised: 07/05/2016] [Accepted: 07/18/2016] [Indexed: 01/28/2023]
Affiliation(s)
- Tatiana Diamantino
- CICS‐UBI ‐ Health Sciences Research CentreUniversidade da Beira Interior Covilhã Portugal
| | - Patrícia Pereira
- CICS‐UBI ‐ Health Sciences Research CentreUniversidade da Beira Interior Covilhã Portugal
| | - João A. Queiroz
- CICS‐UBI ‐ Health Sciences Research CentreUniversidade da Beira Interior Covilhã Portugal
| | - Ângela Sousa
- CICS‐UBI ‐ Health Sciences Research CentreUniversidade da Beira Interior Covilhã Portugal
| | - Fani Sousa
- CICS‐UBI ‐ Health Sciences Research CentreUniversidade da Beira Interior Covilhã Portugal
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