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Nogueira SS, Samaridou E, Simon J, Frank S, Beck-Broichsitter M, Mehta A. Analytical techniques for the characterization of nanoparticles for mRNA delivery. Eur J Pharm Biopharm 2024; 198:114235. [PMID: 38401742 DOI: 10.1016/j.ejpb.2024.114235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 01/22/2024] [Accepted: 02/14/2024] [Indexed: 02/26/2024]
Abstract
Nanotechnology-assisted RNA delivery has gotten a tremendous boost over the last decade and made a significant impact in the development of life-changing vaccines and therapeutics. With increasing numbers of emerging lipid- and polymer-based RNA nanoparticles progressing towards the clinic, it has become apparent that the safety and efficacy of these medications depend on the comprehensive understanding of their critical quality attributes (CQAs). However, despite the rapid advancements in the field, the identification and reliable quantification of CQAs remain a significant challenge. To support these efforts, this review aims to summarize the present knowledge on CQAs based on the regulatory guidelines and to provide insights into the available analytical characterization techniques for RNA-loaded nanoparticles. In this context, routine and emerging analytical techniques are categorized and discussed, focusing on the operation principle, strengths, and potential limitations. Furthermore, the importance of complementary and orthogonal techniques for the measurement of CQAs is discussed in order to ensure the quality and consistency of analytical methods used, and address potential technique-based differences.
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Krähling V, Erbar S, Kupke A, Nogueira SS, Walzer KC, Berger H, Dietzel E, Halwe S, Rohde C, Sauerhering L, Aragão-Santiago L, Moreno Herrero J, Witzel S, Haas H, Becker S, Sahin U. Self-amplifying RNA vaccine protects mice against lethal Ebola virus infection. Mol Ther 2023; 31:374-386. [PMID: 36303436 PMCID: PMC9931551 DOI: 10.1016/j.ymthe.2022.10.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 09/29/2022] [Accepted: 10/24/2022] [Indexed: 11/05/2022] Open
Abstract
Emerging and re-emerging viruses, such as Zaire Ebola virus (EBOV), pose a global threat and require immediate countermeasures, including the rapid development of effective vaccines that are easy to manufacture. Synthetic self-amplifying RNAs (saRNAs) attend to these needs, being safe and strong immune stimulators that can be inexpensively produced in large quantities, using cell-free systems and good manufacturing practice. Here, the first goal was to develop and optimize an anti-EBOV saRNA-based vaccine in terms of its antigen composition and route of administration. Vaccinating mice with saRNAs expressing the EBOV glycoprotein (GP) alone or in combination with the nucleoprotein (NP) elicited antigen-specific immune responses. GP-specific antibodies showed neutralizing activity against EBOV. Strong CD4+ T cell response against NP and GP and CD8+ T cell response against NP were detected by ELISpot assays. Intramuscular vaccination with saRNAs conferred better immune response than intradermal. Finally, mice vaccinated in a prime-boost regimen with saRNAs encoding both GP and NP or with GP alone survived an EBOV infection. In addition, a single dose of GP and NP saRNAs was also protective against fatal EBOV infection. Overall, saRNAs expressing viral antigens represent a promising vaccine platform.
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Affiliation(s)
- Verena Krähling
- Institute of Virology, Philipps University Marburg, Hans-Meerwein-Str. 2, 35043 Marburg, Germany; German Center for Infection Research (DZIF), Partner Site Gießen-Marburg-Langen, Marburg, Germany
| | | | - Alexandra Kupke
- Institute of Virology, Philipps University Marburg, Hans-Meerwein-Str. 2, 35043 Marburg, Germany; German Center for Infection Research (DZIF), Partner Site Gießen-Marburg-Langen, Marburg, Germany
| | | | | | | | - Erik Dietzel
- Institute of Virology, Philipps University Marburg, Hans-Meerwein-Str. 2, 35043 Marburg, Germany; German Center for Infection Research (DZIF), Partner Site Gießen-Marburg-Langen, Marburg, Germany
| | - Sandro Halwe
- Institute of Virology, Philipps University Marburg, Hans-Meerwein-Str. 2, 35043 Marburg, Germany; German Center for Infection Research (DZIF), Partner Site Gießen-Marburg-Langen, Marburg, Germany
| | - Cornelius Rohde
- Institute of Virology, Philipps University Marburg, Hans-Meerwein-Str. 2, 35043 Marburg, Germany; German Center for Infection Research (DZIF), Partner Site Gießen-Marburg-Langen, Marburg, Germany
| | - Lucie Sauerhering
- Institute of Virology, Philipps University Marburg, Hans-Meerwein-Str. 2, 35043 Marburg, Germany; German Center for Infection Research (DZIF), Partner Site Gießen-Marburg-Langen, Marburg, Germany
| | | | | | - Sonja Witzel
- TRON - Translational Oncology at the University Medical Center of the Johannes Gutenberg University gGmbH, Freiligrathstraße 12, 55131 Mainz, Germany
| | - Heinrich Haas
- BioNTech SE, An der Goldgrube 12, 55131 Mainz, Germany
| | - Stephan Becker
- Institute of Virology, Philipps University Marburg, Hans-Meerwein-Str. 2, 35043 Marburg, Germany; German Center for Infection Research (DZIF), Partner Site Gießen-Marburg-Langen, Marburg, Germany.
| | - Ugur Sahin
- BioNTech SE, An der Goldgrube 12, 55131 Mainz, Germany
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Labouta HI, Langer R, Cullis PR, Merkel OM, Prausnitz MR, Gomaa Y, Nogueira SS, Kumeria T. Role of drug delivery technologies in the success of COVID-19 vaccines: a perspective. Drug Deliv Transl Res 2022; 12:2581-2588. [PMID: 35290656 PMCID: PMC8923087 DOI: 10.1007/s13346-022-01146-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/28/2022] [Indexed: 12/15/2022]
Abstract
The triumphant success of mRNA vaccines is a testimony to the important role drug delivery technologies have played in protecting billions of people against SARS-CoV-2 (or the Corona Virus Disease 2019; COVID-19). Several lipid nanoparticle (LNP) mRNA vaccines were developed and have been instrumental in preventing the disease by boosting the immune system against the pathogen, SARS-CoV-2. These vaccines have been built on decades of scientific research in drug delivery of mRNA, vaccines, and other biologicals. In this manuscript, several leading and emerging scientists in the field of drug delivery share their perspective on the role of drug delivery technologies in developing safe and efficacious vaccines, in a roundtable discussion. The authors also discussed their viewpoint on the current challenges, and the key research questions that should drive this important area of research.
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Affiliation(s)
- Hagar I. Labouta
- grid.21613.370000 0004 1936 9609College of Pharmacy, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB R3E 0T5 Canada ,grid.21613.370000 0004 1936 9609Biomedical Engineering, University of Manitoba, Winnipeg, MB Canada ,grid.460198.20000 0004 4685 0561Children’s Hospital Research Institute of Manitoba, Winnipeg, MB R3E 3P4 Canada ,grid.7155.60000 0001 2260 6941Faculty of Pharmacy, Alexandria University, Alexandria, 21521 Egypt
| | - Robert Langer
- grid.116068.80000 0001 2341 2786David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139 USA ,grid.116068.80000 0001 2341 2786Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139 USA
| | - Pieter R. Cullis
- grid.17091.3e0000 0001 2288 9830Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, BC V6T 1Z3 Canada
| | - Olivia M. Merkel
- grid.5252.00000 0004 1936 973XDepartment of Pharmacy, Pharmaceutical Technology and Biopharmacy, Ludwig-Maximilians-University, 81337 Munich, Germany
| | - Mark R. Prausnitz
- grid.213917.f0000 0001 2097 4943School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA 30332 USA
| | - Yasmine Gomaa
- grid.213917.f0000 0001 2097 4943School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA 30332 USA
| | - Sara S. Nogueira
- grid.1005.40000 0004 4902 0432School of Materials Science and Engineering, University of New South Wales, Kensington, Sydney, NSW 2052 Australia ,grid.1005.40000 0004 4902 0432Australian Centre for NanoMedicine, University of New South Wales, Kensington, Sydney, NSW 2052 Australia
| | - Tushar Kumeria
- grid.1005.40000 0004 4902 0432School of Materials Science and Engineering, University of New South Wales, Kensington, Sydney, NSW 2052 Australia ,grid.1005.40000 0004 4902 0432Australian Centre for NanoMedicine, University of New South Wales, Kensington, Sydney, NSW 2052 Australia
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Ziller A, Nogueira SS, Hühn E, Funari SS, Brezesinski G, Hartmann H, Sahin U, Haas H, Langguth P. Incorporation of mRNA in Lamellar Lipid Matrices for Parenteral Administration. Mol Pharm 2018; 15:642-651. [PMID: 29232147 DOI: 10.1021/acs.molpharmaceut.7b01022] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Insertion of high molecular weight messenger RNA (mRNA) into lyotropic lipid phases as model systems for controlled release formulations for the mRNA was investigated. Low fractions of 1,2-dioleoyl-3-trimethylammonium-propane (DOTAP) were used as an anchor to load the mRNA into a lamellar lipid matrix. Dispersions of zwitterionic lipid in the aqueous phase in the presence of increasing fractions of mRNA and cationic lipid were prepared, and the molecular organization was investigated as a function of mRNA and cationic lipid fraction. Insertion of both cationic lipid and mRNA was clearly proven from the physicochemical characteristics. The d-spacing of the lipid bilayers, as determined by small-angle X-ray scattering (SAXS) measurements, responded sensitively to the amount of inserted DOTAP and mRNA. A concise model of the insertion of the mRNA in the lipid matrices was derived, indicating that the mRNA was accommodated in the aqueous slab between lipid bilayers. Depending on the DOTAP and mRNA fraction, a different excess of water was present in this slab. Results from further physicochemical characterization, including determination of free and bound mRNA, zeta potential, and calorimetry data, were in line with this assumption. The structure of these concentrated lipid/mRNA preparations was maintained upon dilution. The functionality of the inserted mRNA was proven by cell culture experiments using C2C12 murine myoblast cells with the luciferase-encoding mRNA. The described lipid phases as carriers for the mRNA may be applicable for different routes of local administration, where control of the release kinetics and the form of the released mRNA (bound or free) is required.
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Affiliation(s)
- Antje Ziller
- Department of Pharmaceutics and Biopharmaceutics, Johannes Gutenberg University Mainz , 55099 Mainz, Germany
| | - Sara S Nogueira
- Department of Pharmaceutics and Biopharmaceutics, Johannes Gutenberg University Mainz , 55099 Mainz, Germany.,BioNTech RNA Pharmaceuticals , 55131 Mainz, Germany
| | - Eva Hühn
- Department of Pharmaceutics and Biopharmaceutics, Johannes Gutenberg University Mainz , 55099 Mainz, Germany
| | | | - Gerald Brezesinski
- Max Planck Institute of Colloids and Interfaces , 14476 Potsdam, Germany
| | - Hermann Hartmann
- Institute for Molecular Biophysics, Johannes Gutenberg University Mainz , 55099 Mainz, Germany
| | - Ugur Sahin
- BioNTech RNA Pharmaceuticals , 55131 Mainz, Germany
| | | | - Peter Langguth
- Department of Pharmaceutics and Biopharmaceutics, Johannes Gutenberg University Mainz , 55099 Mainz, Germany
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Oliveira ACN, Nogueira SS, Gonçalves O, Cerqueira MF, Alpuim P, Tovar J, Rodriguez-Abreu C, Brezesinski G, Gomes AC, Lúcio M, Oliveira MECDR. Role of counter-ion and helper lipid content in the design and properties of nanocarrier systems: a biophysical study in 2D and 3D lipid assemblies. RSC Adv 2016. [DOI: 10.1039/c6ra08125h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This study validates a model for DODAX : MO assemblies highlighting the role of counter-ion and MO content in their biophysical properties.
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Affiliation(s)
- Ana C. N. Oliveira
- CBMA (Centre of Molecular and Environmental Biology)
- Department of Biology
- University of Minho
- Campus of Gualtar
- 4710-057 Braga
| | - Sara S. Nogueira
- CFUM (Centre of Physics)
- Department of Physics
- University of Minho
- Campus of Gualtar
- 4710-057 Braga
| | - Odete Gonçalves
- CBMA (Centre of Molecular and Environmental Biology)
- Department of Biology
- University of Minho
- Campus of Gualtar
- 4710-057 Braga
| | - M. F. Cerqueira
- CFUM (Centre of Physics)
- Department of Physics
- University of Minho
- Campus of Gualtar
- 4710-057 Braga
| | - P. Alpuim
- CFUM (Centre of Physics)
- Department of Physics
- University of Minho
- Campus of Gualtar
- 4710-057 Braga
| | - Júlia Tovar
- CFUM (Centre of Physics)
- Department of Physics
- University of Minho
- Campus of Gualtar
- 4710-057 Braga
| | | | | | - Andreia C. Gomes
- CBMA (Centre of Molecular and Environmental Biology)
- Department of Biology
- University of Minho
- Campus of Gualtar
- 4710-057 Braga
| | - Marlene Lúcio
- CFUM (Centre of Physics)
- Department of Physics
- University of Minho
- Campus of Gualtar
- 4710-057 Braga
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Campos JADB, Zucoloto ML, Geremias RF, Nogueira SS, Maroco J. Validation of the Geriatric Oral Health Assessment Index in complete denture wearers. J Oral Rehabil 2015; 42:512-20. [PMID: 25754792 DOI: 10.1111/joor.12279] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/17/2015] [Indexed: 11/30/2022]
Abstract
To perform a validation of the Geriatric Oral Health Assessment Index (GOHAI) for complete denture wearers and present a proposal for estimation of perceived oral health. This is a cross-sectional study with non-probabilistic sampling. A total of 211 subjects with a mean age of 62·5 (s.d. = 11·4) years participated, being 169 female. The GOHAI was applied in a personal interview. The construct/convergent/discriminant validity was tested using structural equation modelling. Confirmatory factor analysis was used to verify the fit of three proposals of the GOHAI: three-factor, one-factor and second-order hierarchical models. The stability of the models was evaluated in independent samples. The three-factor model presented an inadequate fit, and items 3, 4 and 9 were removed. The new structure presented an acceptable fit and strong invariance in independent samples. The convergent, discriminant validity and internal consistency were below adequate. The one-factor model presented an adequate fit to the sample. Convergent validity was compromised. A strong invariance of the one-factor model was observed. To calculate the overall scores of the GOHAI factors (three-factor model) or of the oral health perception (one-factor model), a matrix of regression weights for each item in the model was presented as a suggestion. We found an adequate fit of the both structures of the GOHAI for denture wearers, but the three-factor structure was more parsimonious. We suggested considering the weights of the regression model to calculate the overall score of perceived oral health or of its factors in different samples.
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Affiliation(s)
- J A D B Campos
- Departamento de Odontologia Social, Faculdade de Odontologia de Araraquara, Univ Estadual Paulista - UNESP, Araraquara, Brasil
| | - M L Zucoloto
- Departamento de Odontologia Social, Faculdade de Odontologia de Araraquara, Univ Estadual Paulista - UNESP, Araraquara, Brasil
| | - R F Geremias
- Departamento de Materiais Odontológicos e Prótese, Faculdade de Odontologia de Araraquara, Univ Estadual Paulista - UNESP, Araraquara, Brasil
| | - S S Nogueira
- Departamento de Materiais Odontológicos e Prótese, Faculdade de Odontologia de Araraquara, Univ Estadual Paulista - UNESP, Araraquara, Brasil
| | - J Maroco
- Unidade de Investigação em Psicologia e Saúde, Instituto Superior de Psicologia Aplicada - ISPA, Lisboa, Portugal
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Abstract
STATEMENT OF PROBLEM A clinically significant incisal pin opening may occur after processing complete dentures if a compression molding technique is used. To recover the proper vertical dimension of occlusion, a time-consuming occlusal adjustment is necessary that often destroys the anatomy of the artificial teeth. A new injection molding process claims to produce dentures that require few, if any, occlusal adjustments in the laboratory after processing. PURPOSE This laboratory study compared incisal pin opening, dimensional accuracy, and laboratory working time for dentures fabricated by this new injection system with dentures constructed by the conventional compression molding technique. MATERIAL AND METHODS Two groups of 6 maxillary and 6 mandibular dentures were evaluated as follows: group 1 (control), Lucitone 199, compression molded with a long cure cycle; and group 2, Lucitone 199, injection molded with a long cure. Incisal pin opening was measured with a micrometer immediately after deflasking. A computerized coordinate measuring machine was used to measure dimensional accuracy of 3-dimensional variations in selected positions of artificial teeth in 4 stages of denture fabrication. Analysis of variance (ANOVA) and t tests were performed to compare the groups. RESULTS A significant difference was found in pin opening between groups (t test). Horizontal dimensional changes evaluated with repeated measures ANOVA revealed no significant differences between groups. However, analysis of vertical dimensional changes disclosed significant differences between the groups. There was no appreciable difference in laboratory working time for flasking and molding denture bases between the injection and compression molding techniques when polymethyl methacrylate resin was used. CONCLUSION The injection molding method produced a significantly smaller incisal pin opening over the standard compression molding technique. The injection molding technique, using polymethyl methacrylate, was a more accurate method for processing dentures. There were no appreciable differences in laboratory working time between the injection and compression molding techniques.
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Affiliation(s)
- S S Nogueira
- School of Dental Medicine, State University of New York at Buffalo, Buffalo, NY, USA.
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Lombardo JG, Russi S, Compagnoni MA, Nogueira SS. [Determination of centric relation. Study of the lateral position of the mandible in relation to the facial median line, using 2 methods of determination]. RGO 1990; 38:230-4. [PMID: 2218054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The authors studied the lateral positional desviations of the mandible, in relation to the facial median line in 30 (thirty) full edentulous patients, with the purpose to verify the influence of the unstrained guided (chinpoint guidance) and deglutition methods for the determination of centric relation. According the results obtained they conclude that the unstrained guided method produced a mandibular lateral desviation with a mean value of the 0.752 mm and in the deglutition method the mean value observed was 1.109 mm. The statistical analysis of the results revealed for the unstrained guided method a proportion of the "points" to the right and left of the median line not statistically significant, while for the deglutition method the difference was statistically significant at a level of 5%.
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Russi S, Lombardo JG, Compagnoni MA, Mendes AJ, Nogueira SS. [Verification of the compressive areas in lower complete dentures]. Rev Assoc Paul Cir Dent 1981; 35:196-201. [PMID: 6943621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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