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Abstract
Gastropods forage with their radula, a thin chitinous membrane with embedded teeth, which scratch across the substrate to lose food particles. During this interaction, the risk of loosening particles is obvious without having a specialized mechanism holding them on the tooth surface. As mucus secretions are essential in molluscan life cycles and the locomotion and attachment gels are known to have an instant high adhesion, we have hypothesized that the saliva could support particle retention during feeding. As adhesion of snail saliva was not studied before, we present here an experimental setup to test its particle-binding capacity using a large land snail (Lissachatina fulica, Stylommatophora, Heterobranchia). This experiment was also applied to the gels produced by the snail foot for comparison and can be potentially applied to various fluids present at a small volume in the future. We found, that the saliva has high particle retention capacity that is comparable to the foot glue of the snail. To gain some insight into the properties of the saliva, we additionally studied it in the scanning electron microscope, estimated its viscosity in a de-wetting experiment, and investigated its elemental composition using energy dispersive X-ray spectroscopy reveling higher contents of Ca, Zn and other potential cross-linkers similar to those found in the glue.
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Affiliation(s)
- Wencke Krings
- Department of Cariology, Endodontology and Periodontology, Universität Leipzig, Liebigstraße 12, 04103 Leipzig, Germany
- Department of Electron Microscopy, Institute of Cell and Systems Biology of Animals, Universität Hamburg, Martin-Luther-King-Platz 3, 20146 Hamburg, Germany
- Department of Mammalogy and Palaeoanthropology, Leibniz Institute for the Analysis of Biodiversity Change, Martin-Luther-King-Platz 3, 20146 Hamburg, Germany
- Department of Functional Morphology and Biomechanics, Zoological Institute, Christian-Albrechts-Universität zu Kiel, Am Botanischen Garten 1-9, 24118 Kiel, Germany
| | - Stanislav N Gorb
- Department of Functional Morphology and Biomechanics, Zoological Institute, Christian-Albrechts-Universität zu Kiel, Am Botanischen Garten 1-9, 24118 Kiel, Germany
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2
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Kulchar RJ, Singh R, Ding S, Alexander E, Leong KW, Daniell H. Delivery of biologics: Topical administration. Biomaterials 2023; 302:122312. [PMID: 37690380 PMCID: PMC10840840 DOI: 10.1016/j.biomaterials.2023.122312] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 08/27/2023] [Accepted: 08/31/2023] [Indexed: 09/12/2023]
Abstract
Biologics are unaffordable to a large majority of the global population because of prohibitively expensive fermentation systems, purification and the requirement for cold chain for storage and transportation. Limitations of current production and delivery systems of biologics were evident during the recent pandemic when <2.5% of vaccines produced were available to low-income countries and ∼19 million doses were discarded in Africa due to lack of cold-chain infrastructure. Among FDA-approved biologics since 2015, >90% are delivered using invasive methods. While oral or topical drugs are highly preferred by patients because of their affordability and convenience, only two oral drugs have been approved by FDA since 2015. A newly launched oral biologic costs only ∼3% of the average cost of injectable biologics because of the simplified regulatory approval process by elimination of prohibitively expensive fermentation, purification, cold storage/transportation. In addition, the cost of developing a new biologic injectable product (∼$2.5 billion) has been dramatically reduced through oral or topical delivery. Topical delivery has the unique advantage of targeted delivery of high concentration protein drugs, without getting diluted in circulating blood. However, only very few topical drugs have been approved by the FDA. Therefore, this review highlights recent advances in oral or topical delivery of proteins at early or advanced stages of human clinical trials using chewing gums, patches or sprays, or nucleic acid drugs directly, or in combination with, nanoparticles and offers future directions.
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Affiliation(s)
- Rachel J. Kulchar
- Department of Basic and Translational Sciences, School of Dental Medicine, University of Pennsylvania, Philadelphia PA 19104, USA
| | - Rahul Singh
- Department of Basic and Translational Sciences, School of Dental Medicine, University of Pennsylvania, Philadelphia PA 19104, USA
| | - Suwan Ding
- Department of Biomedical Engineering, Columbia University, New York City NY 10032, USA
| | - Elena Alexander
- Department of Biomedical Engineering, Columbia University, New York City NY 10032, USA
| | - Kam W Leong
- Department of Biomedical Engineering, Columbia University, New York City NY 10032, USA
| | - Henry Daniell
- Department of Basic and Translational Sciences, School of Dental Medicine, University of Pennsylvania, Philadelphia PA 19104, USA
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3
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Kose O, Béal D, Motellier S, Pelissier N, Collin-Faure V, Blosi M, Bengalli R, Costa A, Furxhi I, Mantecca P, Carriere M. Physicochemical Transformations of Silver Nanoparticles in the Oro-Gastrointestinal Tract Mildly Affect Their Toxicity to Intestinal Cells In Vitro: An AOP-Oriented Testing Approach. Toxics 2023; 11:199. [PMID: 36976964 PMCID: PMC10056345 DOI: 10.3390/toxics11030199] [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] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 02/10/2023] [Accepted: 02/13/2023] [Indexed: 06/18/2023]
Abstract
The widespread use of silver nanoparticles (Ag NPs) in food and consumer products suggests the relevance of human oral exposure to these nanomaterials (NMs) and raises the possibility of adverse effects in the gastrointestinal tract. The aim of this study was to investigate the toxicity of Ag NPs in a human intestinal cell line, either uncoated or coated with polyvinylpyrrolidone (Ag PVP) or hydroxyethylcellulose (Ag HEC) and digested in simulated gastrointestinal fluids. Physicochemical transformations of Ag NPs during the different stages of in vitro digestion were identified prior to toxicity assessment. The strategy for evaluating toxicity was constructed on the basis of adverse outcome pathways (AOPs) showing Ag NPs as stressors. It consisted of assessing Ag NP cytotoxicity, oxidative stress, genotoxicity, perturbation of the cell cycle and apoptosis. Ag NPs caused a concentration-dependent loss of cell viability and increased the intracellular level of reactive oxygen species as well as DNA damage and perturbation of the cell cycle. In vitro digestion of Ag NPs did not significantly modulate their toxicological impact, except for their genotoxicity. Taken together, these results indicate the potential toxicity of ingested Ag NPs, which varied depending on their coating but did not differ from that of non-digested NPs.
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Affiliation(s)
- Ozge Kose
- Univ. Grenoble-Alpes, CEA, CNRS, IRIG, SyMMES, CIBEST, 38000 Grenoble, France
| | - David Béal
- Univ. Grenoble-Alpes, CEA, CNRS, IRIG, SyMMES, CIBEST, 38000 Grenoble, France
| | - Sylvie Motellier
- Univ. Grenoble-Alpes, Lab Measure Securing & Environm, LITEN, DTNM, STDC, CEA, 17 Av Martyrs, 38000 Grenoble, France
| | - Nathalie Pelissier
- Univ. Grenoble-Alpes, Lab of Advanced Characterization for Energy, LITEN, DTNM, STDC, CEA, 17 Av Martyrs, 38000 Grenoble, France
| | - Véronique Collin-Faure
- Univ. Grenoble-Alpes, CEA, CNRS UMR5249, IRIG DIESE CBM, Chem & Biol Met, 38054 Grenoble, France
| | - Magda Blosi
- CNR-ISTEC, Institute of Science and Technology for Ceramics-National Research Council of Italy, Via Granarolo 64, 48018 Faenza, Italy
| | - Rossella Bengalli
- Polaris Research Centre, Department of Earth and Environmental Sciences, University of Milano-Bicocca, Piazza della Scienza, 1, 20126 Milan, Italy
| | - Anna Costa
- CNR-ISTEC, Institute of Science and Technology for Ceramics-National Research Council of Italy, Via Granarolo 64, 48018 Faenza, Italy
| | - Irini Furxhi
- Transgero Ltd., Newcastle West, V42 V384 Limerick, Ireland
| | - Paride Mantecca
- Polaris Research Centre, Department of Earth and Environmental Sciences, University of Milano-Bicocca, Piazza della Scienza, 1, 20126 Milan, Italy
| | - Marie Carriere
- Univ. Grenoble-Alpes, CEA, CNRS, IRIG, SyMMES, CIBEST, 38000 Grenoble, France
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Sen A, Sester C, Poulsen H, Hodgkiss JM. Accounting for Interaction Kinetics between Gold Nanoparticles and Aptamers Enables High-Performance Colorimetric Sensors. ACS Appl Mater Interfaces 2022; 14:32813-32822. [PMID: 35833898 DOI: 10.1021/acsami.2c04747] [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] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
DNA aptamers have emerged as promising probes for challenging analytes that cannot be easily detected by conventional probes, including small-molecule targets. Among the different signal transduction approaches, gold nanoparticle (AuNP) aggregation assays have been widely used to generate a colorimetric response from aptamer-target interactions. This sensor design relies on the competition between the aptamer adsorbing to the AuNP surface versus interacting with the target, whereby target binding reduces the number of adsorbed aptamers that destabilizes AuNPs toward salt-induced aggregation, thereby inducing a color change. However, this thermodynamic framework overlooks the potential influence of interaction kinetics of different aptamer conformations with AuNP surfaces and with targets in solution or near surfaces. Here, we show that aptamers become more strongly adsorbed on AuNPs over time, and these trapped aptamers are less responsive toward the target analyte. By varying the sequence of addition in sensing assays, we demonstrate that these interaction kinetics have a significant effect on the sensor response and thereby produce an effective sensor for methamphetamine (meth) at biologically relevant levels in oral fluids. Along with underpinning new tools for assay development, this new knowledge also highlights the need for aptamer selection strategies that evolve aptamer sequences based on the functionality that they need to exhibit in an actual sensor.
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Affiliation(s)
- Anindita Sen
- The MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington, Wellington 6012, New Zealand
- School of Chemical and Physical Sciences, Victoria University of Wellington, Wellington 6040, New Zealand
| | - Clément Sester
- The MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington, Wellington 6012, New Zealand
- School of Chemical and Physical Sciences, Victoria University of Wellington, Wellington 6040, New Zealand
| | - Helen Poulsen
- Forensic Specialised Analytical Services (F-SAS), Institute of Environmental Science and Research (ESR), P.O. Box 50348, Wellington 5240, New Zealand
| | - Justin M Hodgkiss
- The MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington, Wellington 6012, New Zealand
- School of Chemical and Physical Sciences, Victoria University of Wellington, Wellington 6040, New Zealand
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Abstract
Microrheology encompasses a range of methods to measure the mechanical properties of soft materials. By characterizing the motion of embedded microscopic particles, microrheology extends the probing length scale and frequency range of conventional bulk rheology. Microrheology can be characterized into either passive or active methods based on the driving force exerted on probe particles. Tracer particles are driven by thermal energy in passive methods, applying minimal deformation to the assessed medium. In active techniques, particles are manipulated by an external force, most commonly produced through optical and magnetic fields. Small-scale rheology holds significant advantages over conventional bulk rheology, such as eliminating the need for large sample sizes, the ability to probe fragile materials non-destructively, and a wider probing frequency range. More importantly, some microrheological techniques can obtain spatiotemporal information of local microenvironments and accurately describe the heterogeneity of structurally complex fluids. Recently, there has been significant growth in using these minimally invasive techniques to investigate a wide range of biomedical systems both in vitro and in vivo. Here, we review the latest applications and advancements of microrheology in mammalian cells, tissues, and biofluids and discuss the current challenges and potential future advances on the horizon.
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Affiliation(s)
- Yating Mao
- Department of Chemical and Biomedical Engineering, FAMU-FSU College of Engineering, Tallahassee, FL, United States
- National High Magnetic Field Laboratory, Tallahassee, FL, United States
| | - Paige Nielsen
- Department of Chemical and Biomedical Engineering, FAMU-FSU College of Engineering, Tallahassee, FL, United States
- National High Magnetic Field Laboratory, Tallahassee, FL, United States
| | - Jamel Ali
- Department of Chemical and Biomedical Engineering, FAMU-FSU College of Engineering, Tallahassee, FL, United States
- National High Magnetic Field Laboratory, Tallahassee, FL, United States
- *Correspondence: Jamel Ali,
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Jeitler R, Glader C, Tetyczka C, Zeiringer S, Absenger-Novak M, Selmani A, Fröhlich E, Roblegg E. Investigation of Cellular Interactions of Lipid-Structured Nanoparticles With Oral Mucosal Epithelial Cells. Front Mol Biosci 2022; 9:917921. [PMID: 35677878 PMCID: PMC9170126 DOI: 10.3389/fmolb.2022.917921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 05/04/2022] [Indexed: 11/13/2022] Open
Abstract
Lipid-based nanosystems enable intracellular delivery of drugs in the oral cavity for the treatment of local diseases. To rationally design such systems, suitable matrix compositions and particle properties need to be identified, and manufacturing technologies that allow reproducible production have to be applied. This is a prerequisite for the reliable and predictable performance of in-vitro biological studies. Here, we showed that solid lipid nanoparticles (SLN, palmitic acid) and nanostructured lipid carriers (NLC, palmitic acid and oleic acid in different ratios) with a size of 250 nm, a negative zeta potential, and a polydispersity index (PdI) of less than 0.3 can be reproducibly prepared by high-pressure homogenization using quality by design and a predictive model. SLN and NLC were colloidally stable after contact with physiological fluid and did not form agglomerates. The in-vitro studies clearly showed that besides particle size, surface charge and hydrophobicity, matrix composition had a significant effect. More specifically, the addition of the liquid lipid oleic acid increased the cellular uptake capacity without changing the underlying uptake mechanism. Regardless of the matrix composition, caveolin-mediated endocytosis was the major route of uptake, which was confirmed by particle localization in the endoplasmic reticulum. Thus, this work provides useful insights into the optimal composition of lipid carrier systems to enhance the intracellular uptake capacity of drugs into the oral mucosa.
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Affiliation(s)
- R. Jeitler
- Pharmaceutical Technology and Biopharmacy, Institute of Pharmaceutical Sciences, University of Graz, Universitätsplatz 1, Graz, Austria
| | - C. Glader
- Pharmaceutical Technology and Biopharmacy, Institute of Pharmaceutical Sciences, University of Graz, Universitätsplatz 1, Graz, Austria
- Research Center Pharmaceutical Engineering GmbH, Graz, Austria
| | - C. Tetyczka
- Research Center Pharmaceutical Engineering GmbH, Graz, Austria
| | - S. Zeiringer
- Pharmaceutical Technology and Biopharmacy, Institute of Pharmaceutical Sciences, University of Graz, Universitätsplatz 1, Graz, Austria
| | - M. Absenger-Novak
- Center for Medical Research, Medical University of Graz, Graz, Austria
| | - A. Selmani
- Pharmaceutical Technology and Biopharmacy, Institute of Pharmaceutical Sciences, University of Graz, Universitätsplatz 1, Graz, Austria
| | - E. Fröhlich
- Center for Medical Research, Medical University of Graz, Graz, Austria
| | - E. Roblegg
- Pharmaceutical Technology and Biopharmacy, Institute of Pharmaceutical Sciences, University of Graz, Universitätsplatz 1, Graz, Austria
- Research Center Pharmaceutical Engineering GmbH, Graz, Austria
- *Correspondence: E. Roblegg,
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7
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Peng H, Huang P, Young JD, Ojcius DM. Physical attributes of salivary calcium particles and their interaction with gingival epithelium. Biomed J 2021; 44:686-93. [PMID: 35166207 PMCID: PMC8847823 DOI: 10.1016/j.bj.2020.05.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Revised: 05/02/2020] [Accepted: 05/10/2020] [Indexed: 11/21/2022] Open
Abstract
Background The formation of dental plaque and its involvement in the pathogenesis of periodontitis is a topic of intense interest given the high prevalence of periodontitis in humans. Even though calcium-based particles play an active role in both dental plaque formation and periodontitis, few publications describe the physical-chemical properties of these particles. Methods Saliva samples were collected from healthy volunteers. From these samples, saliva-derived particles were isolated and stained for calcium using calcein or Fluo-4. The salivary particles were also subjected to characterization by flow cytometry and immunoblotting. Internalization of calcein-labeled salivary particles by gingival epithelial cells was visualized by confocal microscopy. Results We found that calcium-based salivary particles from healthy volunteers varied greatly in size but were enriched in particles of sizes at or greater than 1.5 μm. Immunoblotting analysis of the salivary particles identified several proteins including albumin, fetuin-A, and statherin, which have been found in calcium phosphate particles from other tissues or are known to modulate calcium homeostasis in saliva. In addition, calcium particles were internalized by both gingival epithelial cells and monocyte-derived macrophages. Conclusion Salivary calcium particles were enriched in the micrometer range, internalized by gingival epithelial cells, and contain albumin, fetuin-A and statherin, regulators of particle formation. These characteristics of the calcium-based salivary particles and their biological activities provide a basis for further studies to understand the molecular basis for pathogenesis of periodontitis.
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Pem B, Ćurlin M, Domazet Jurašin D, Vrček V, Barbir R, Micek V, Fratila RM, de la Fuente JM, Vinković Vrček I. Fate and transformation of silver nanoparticles in different biological conditions. Beilstein J Nanotechnol 2021; 12:665-679. [PMID: 34327112 PMCID: PMC8275868 DOI: 10.3762/bjnano.12.53] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Accepted: 06/23/2021] [Indexed: 05/05/2023]
Abstract
The exploitation of silver nanoparticles (AgNPs) in biomedicine represents more than one third of their overall application. Despite their wide use and significant amount of scientific data on their effects on biological systems, detailed insight into their in vivo fate is still lacking. This study aimed to elucidate the biotransformation patterns of AgNPs following oral administration. Colloidal stability, biochemical transformation, dissolution, and degradation behaviour of different types of AgNPs were evaluated in systems modelled to represent biological environments relevant for oral administration, as well as in cell culture media and tissue compartments obtained from animal models. A multimethod approach was employed by implementing light scattering (dynamic and electrophoretic) techniques, spectroscopy (UV-vis, atomic absorption, nuclear magnetic resonance) and transmission electron microscopy. The obtained results demonstrated that AgNPs may transform very quickly during their journey through different biological conditions. They are able to degrade to an ionic form and again reconstruct to a nanoparticulate form, depending on the biological environment determined by specific body compartments. As suggested for other inorganic nanoparticles by other research groups, AgNPs fail to preserve their specific integrity in in vivo settings.
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Affiliation(s)
- Barbara Pem
- Institute for Medical Research and Occupational Health, Ksaverska cesta 2, 10 000 Zagreb, Croatia
| | - Marija Ćurlin
- University of Zagreb, School of Medicine, Šalata 12, 10 000 Zagreb, Croatia
| | - Darija Domazet Jurašin
- Division of Physical Chemistry, Ruđer Bošković Institute, Bijenička cesta 54, 10 000 Zagreb, Croatia
| | - Valerije Vrček
- University of Zagreb, Faculty of Pharmacy and Biochemistry, Ante Kovačića 1, 10 000 Zagreb, Croatia
| | - Rinea Barbir
- Institute for Medical Research and Occupational Health, Ksaverska cesta 2, 10 000 Zagreb, Croatia
| | - Vedran Micek
- Institute for Medical Research and Occupational Health, Ksaverska cesta 2, 10 000 Zagreb, Croatia
| | - Raluca M Fratila
- Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, Zaragoza 50009, Spain
- Centro de Investigación Biomédica en Red de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Spain
| | - Jesus M de la Fuente
- Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, Zaragoza 50009, Spain
- Centro de Investigación Biomédica en Red de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Spain
| | - Ivana Vinković Vrček
- Institute for Medical Research and Occupational Health, Ksaverska cesta 2, 10 000 Zagreb, Croatia
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Seyfoori A, Shokrollahi Barough M, Mokarram P, Ahmadi M, Mehrbod P, Sheidary A, Madrakian T, Kiumarsi M, Walsh T, McAlinden KD, Ghosh CC, Sharma P, Zeki AA, Ghavami S, Akbari M. Emerging Advances of Nanotechnology in Drug and Vaccine Delivery against Viral Associated Respiratory Infectious Diseases (VARID). Int J Mol Sci 2021; 22:6937. [PMID: 34203268 PMCID: PMC8269337 DOI: 10.3390/ijms22136937] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 06/19/2021] [Accepted: 06/19/2021] [Indexed: 12/12/2022] Open
Abstract
Viral-associated respiratory infectious diseases are one of the most prominent subsets of respiratory failures, known as viral respiratory infections (VRI). VRIs are proceeded by an infection caused by viruses infecting the respiratory system. For the past 100 years, viral associated respiratory epidemics have been the most common cause of infectious disease worldwide. Due to several drawbacks of the current anti-viral treatments, such as drug resistance generation and non-targeting of viral proteins, the development of novel nanotherapeutic or nano-vaccine strategies can be considered essential. Due to their specific physical and biological properties, nanoparticles hold promising opportunities for both anti-viral treatments and vaccines against viral infections. Besides the specific physiological properties of the respiratory system, there is a significant demand for utilizing nano-designs in the production of vaccines or antiviral agents for airway-localized administration. SARS-CoV-2, as an immediate example of respiratory viruses, is an enveloped, positive-sense, single-stranded RNA virus belonging to the coronaviridae family. COVID-19 can lead to acute respiratory distress syndrome, similarly to other members of the coronaviridae. Hence, reviewing the current and past emerging nanotechnology-based medications on similar respiratory viral diseases can identify pathways towards generating novel SARS-CoV-2 nanotherapeutics and/or nano-vaccines.
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Affiliation(s)
- Amir Seyfoori
- Laboratory for Innovations in Micro Engineering (LiME), Department of Mechanical Engineering, University of Victoria, Victoria, BC V8P 5C2, Canada; (A.S.); (T.W.)
- Biomaterials and Tissue Engineering Department, Breast Cancer Research Center, Motamed Cancer Institute, ACECR, Tehran 1517964311, Iran
| | - Mahdieh Shokrollahi Barough
- Department of Immunology, Iran University of Medical Sciences, Tehran 1449614535, Iran;
- ATMP Department, Breast Cancer Research Center, Motamed Cancer Institute, ACECR, Tehran 1517964311, Iran
| | - Pooneh Mokarram
- Department of Clinical Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz 7134845794, Iran;
- Autophagy Research Center, Health Policy Research Center, Institute of Health, Shiraz University of Medical Sciences, Shiraz 7134845794, Iran
| | - Mazaher Ahmadi
- Department of Analytical Chemistry, Faculty of Chemistry, Bu-Ali Sina University, Hamedan 6517838695, Iran; (M.A.); (T.M.)
| | - Parvaneh Mehrbod
- Influenza and Respiratory Viruses Department, Pasteur Institute of IRAN, Tehran 1316943551, Iran;
| | - Alireza Sheidary
- Department of Pharmaceutical Nanotechnology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran 14155-6451, Iran;
| | - Tayyebeh Madrakian
- Department of Analytical Chemistry, Faculty of Chemistry, Bu-Ali Sina University, Hamedan 6517838695, Iran; (M.A.); (T.M.)
- Department of Pharmaceutical Nanotechnology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran 14155-6451, Iran;
| | - Mohammad Kiumarsi
- Department of Human Anatomy and Cell Science, Rady College of Medicine, Max Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB R3E 0J9, Canada;
| | - Tavia Walsh
- Laboratory for Innovations in Micro Engineering (LiME), Department of Mechanical Engineering, University of Victoria, Victoria, BC V8P 5C2, Canada; (A.S.); (T.W.)
| | - Kielan D. McAlinden
- Department of Laboratory Medicine, School of Health Sciences, University of Tasmania, Launceston, TAS 7248, Australia;
| | - Chandra C. Ghosh
- Roger Williams Medical Center, Immuno-Oncology Institute (Ix2), Providence, RI 02908, USA;
| | - Pawan Sharma
- Center for Translational Medicine, Division of Pulmonary, Allergy and Critical Care Medicine, Jane & Leonard Korman Respiratory Institute, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA 19107, USA;
| | - Amir A. Zeki
- Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, U.C. Davis Lung Center, Davis School of Medicine, University of California, Davis, CA 95817, USA;
- Veterans Affairs Medical Center, Mather, CA 95817, USA
| | - Saeid Ghavami
- Autophagy Research Center, Health Policy Research Center, Institute of Health, Shiraz University of Medical Sciences, Shiraz 7134845794, Iran
- Department of Human Anatomy and Cell Science, Rady College of Medicine, Max Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB R3E 0J9, Canada;
- Biology of Breathing Theme, Children Hospital Research Institute of Manitoba, University of Manitoba, Winnipeg, MB R3E 0J9, Canada
- Research Institute of Oncology and Hematology, Cancer Care Manitoba, University of Manitoba, Winnipeg, MB R3E 0J9, Canada
| | - Mohsen Akbari
- Laboratory for Innovations in Micro Engineering (LiME), Department of Mechanical Engineering, University of Victoria, Victoria, BC V8P 5C2, Canada; (A.S.); (T.W.)
- Biotechnology Center, Silesian University of Technology, Akademicka 2A, 44-100 Gliwice, Poland
- Center for Advanced Materials and Related Technologies, University of Victoria, Victoria, BC V8P 5C2, Canada
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10
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Alafeef M, Moitra P, Dighe K, Pan D. RNA-extraction-free nano-amplified colorimetric test for point-of-care clinical diagnosis of COVID-19. Nat Protoc 2021; 16:3141-3162. [PMID: 33931780 DOI: 10.1038/s41596-021-00546-w] [Citation(s) in RCA: 63] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Accepted: 03/30/2021] [Indexed: 02/07/2023]
Abstract
The global pandemic of coronavirus disease 2019 (COVID-19) highlights the shortcomings of the current testing paradigm for viral disease diagnostics. Here, we report a stepwise protocol for an RNA-extraction-free nano-amplified colorimetric test for rapid and naked-eye molecular diagnosis of COVID-19. The test employs a unique dual-prong approach that integrates nucleic acid (NA) amplification and plasmonic sensing for point-of-care detection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), with a sample-to-assay response time of <1 h. The RNA-extraction-free nano-amplified colorimetric test utilizes plasmonic gold nanoparticles capped with antisense oligonucleotides (ASOs) as a colorimetric reporter to detect the amplified nucleic acid from the COVID-19 causative virus, SARS-CoV-2. The ASOs are specific for the SARS-CoV-2 N-gene, and binding of the ASOs to their target sequence results in the aggregation of the plasmonic gold nanoparticles. This highly specific agglomeration step leads to a change in the plasmonic response of the nanoparticles. Furthermore, when tested using clinical samples, the accuracy, sensitivity and specificity of the test were found to be >98.4%, >96.6% and 100%, respectively, with a detection limit of 10 copies/μL. The test can easily be adapted to diagnose other viral infections with a simple modification of the ASOs and primer sequences. It also provides a low-cost, rapid approach requiring minimal instrumentation that can be used as a screening tool for the diagnosis of COVID-19 at point-of-care settings in resource-poor situations. The colorimetric readout of the test can even be monitored using a handheld optical reader to obtain a quantitative response. Therefore, we anticipate that this protocol will be widely useful for the development of biosensors for the molecular diagnostics of COVID-19 and other infectious diseases.
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Affiliation(s)
- Maha Alafeef
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA.,Biomedical Engineering Department, Jordan University of Science and Technology, Irbid, Jordan.,Departments of Diagnostic Radiology and Nuclear Medicine and Pediatrics, Center for Blood Oxygen Transport and Hemostasis, University of Maryland Baltimore School of Medicine, Baltimore, MD, USA.,Department of Chemical, Biochemical and Environmental Engineering, University of Maryland Baltimore County, Baltimore, MD, USA
| | - Parikshit Moitra
- Departments of Diagnostic Radiology and Nuclear Medicine and Pediatrics, Center for Blood Oxygen Transport and Hemostasis, University of Maryland Baltimore School of Medicine, Baltimore, MD, USA
| | - Ketan Dighe
- Departments of Diagnostic Radiology and Nuclear Medicine and Pediatrics, Center for Blood Oxygen Transport and Hemostasis, University of Maryland Baltimore School of Medicine, Baltimore, MD, USA.,Department of Chemical, Biochemical and Environmental Engineering, University of Maryland Baltimore County, Baltimore, MD, USA
| | - Dipanjan Pan
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA. .,Departments of Diagnostic Radiology and Nuclear Medicine and Pediatrics, Center for Blood Oxygen Transport and Hemostasis, University of Maryland Baltimore School of Medicine, Baltimore, MD, USA. .,Department of Chemical, Biochemical and Environmental Engineering, University of Maryland Baltimore County, Baltimore, MD, USA.
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11
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Guo Q. Understanding the oral processing of solid foods: Insights from food structure. Compr Rev Food Sci Food Saf 2021; 20:2941-2967. [PMID: 33884754 DOI: 10.1111/1541-4337.12745] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 02/17/2021] [Accepted: 03/03/2021] [Indexed: 01/25/2023]
Abstract
Understanding the relationship between the structure of solid foods and their oral processing is paramount for enhancing features such as texture and taste and for improving health-related factors such as management of body weight or dysphagia. This paper discusses the main aspects of the oral processing of solid foods across different categories: (1) oral physiology related to chewing, (2) in-mouth food transformation, (3) texture perception, and (4) taste perception, and emphasis is placed on unveiling the underlying mechanisms of how food structure influences the oral processing of solid foods; this is exemplified by comparing the chewing behaviors for a number of representative solid foods. It highlights that modification of the texture/taste of food based on food structure design opens up the possibility for the development of food products that can be applied in the management of health.
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Affiliation(s)
- Qing Guo
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China.,National Engineering Research Center for Fruit and Vegetable Processing, China Agricultural University, Beijing, China.,Key Laboratory of Fruits and Vegetables Processing of Ministry of Agriculture and Rural Affairs, China Agricultural University, Beijing, China
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12
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Winter C, Keimel R, Gugatschka M, Kolb D, Leitinger G, Roblegg E. Investigation of Changes in Saliva in Radiotherapy-Induced Head Neck Cancer Patients. Int J Environ Res Public Health 2021; 18:1629. [PMID: 33572065 DOI: 10.3390/ijerph18041629] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Revised: 01/28/2021] [Accepted: 02/01/2021] [Indexed: 12/12/2022]
Abstract
The intact function of the salivary glands is of utmost importance for oral health. During radiotherapy in patients with head and neck tumors, the salivary glands can be damaged, causing the composition of saliva to change. This leads to xerostomia, which is a primary contributor to oral mucositis. Medications used for protective or palliative treatment often show poor efficacy as radiation-induced changes in the physico-chemical properties of saliva are not well understood. To improve treatment options, this study aimed to carefully examine unstimulated whole saliva of patients receiving radiation therapy and compare it with healthy unstimulated whole saliva. To this end, the pH, osmolality, electrical conductivity, buffer capacity, the whole protein and mucin concentrations, and the viscoelastic and adhesive properties were investigated. Moreover, hyaluronic acid was examined as a potential candidate for a saliva replacement fluid. The results showed that the pH of radiation-induced saliva shifted from neutral to acidic, the osmolality increased and the viscoelastic properties changed due to a disruption of the mucin network and a change in water secretion from the salivary glands. By adopting an aqueous 0.25% hyaluronic acid formulation regarding the lost properties, similar adhesion characteristics as in healthy, unstimulated saliva could be achieved.
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13
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Ilić K, Hartl S, Galić E, Tetyczka C, Pem B, Barbir R, Milić M, Vinković Vrček I, Roblegg E, Pavičić I. Interaction of Differently Coated Silver Nanoparticles With Skin and Oral Mucosal Cells. J Pharm Sci 2021; 110:2250-2261. [PMID: 33539871 DOI: 10.1016/j.xphs.2021.01.030] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 01/20/2021] [Accepted: 01/28/2021] [Indexed: 12/19/2022]
Abstract
Silver nanoparticles (AgNP) can be found in different consumer products and various medical devices due to their excellent biocidal properties. Despite extensive scientific literature reporting biological effects of AgNP, there is still a lack of scientific evidence on how different surface functionalization affects AgNP interaction with the human skin and the oral epithelium. This study aimed to investigate biological consequences following the treatment of HaCaT and TR146 cells with AgNP stabilized with negatively charged sodium bis(2-ethylhexyl)-sulfosuccinate (AOT), neutral polyvinylpyrrolidone (PVP), and positively charged poly-l-lysine (PLL). All AgNP were characterized by means of size, shape and surface charge. Interactions with biological barriers were investigated in vitro by determining cell viability, particle uptake, oxidative stress response and DNA damages following AgNP treatment. Results showed a significant difference in cytotoxicity depending on the surface coating used for AgNP stabilization. All three types of AgNP induced apoptosis, oxidative stress response and DNA damages in cells, but AOT- and PVP-coated AgNP exhibited lower toxicity than positively charged PLL-AgNP. Considering the number of data gaps related to the safe use of nanomaterials in biomedicine, this study highlights the importance of particle surface functionalization that should be considered during design and development of future AgNP-based medical products.
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Affiliation(s)
- Krunoslav Ilić
- Institute for Medical Research and Occupational Health, Zagreb, Croatia
| | - Sonja Hartl
- Department of Pharmaceutical Technology and Biopharmacy, University of Graz, Institute of Pharmaceutical Sciences, Graz, Austria
| | - Emerik Galić
- Faculty of Agrobiotechnical Sciences, J.J. Strossmayer University of Osijek, Osijek, Croatia
| | - Carolin Tetyczka
- Department of Pharmaceutical Technology and Biopharmacy, University of Graz, Institute of Pharmaceutical Sciences, Graz, Austria
| | - Barbara Pem
- Institute for Medical Research and Occupational Health, Zagreb, Croatia
| | - Rinea Barbir
- Institute for Medical Research and Occupational Health, Zagreb, Croatia
| | - Mirta Milić
- Institute for Medical Research and Occupational Health, Zagreb, Croatia
| | | | - Eva Roblegg
- Department of Pharmaceutical Technology and Biopharmacy, University of Graz, Institute of Pharmaceutical Sciences, Graz, Austria
| | - Ivan Pavičić
- Institute for Medical Research and Occupational Health, Zagreb, Croatia.
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14
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Westmeier D, Siemer S, Vallet C, Steinmann J, Docter D, Buer J, Knauer SK, Stauber RH. Boosting nanotoxicity to combat multidrug-resistant bacteria in pathophysiological environments. Nanoscale Adv 2020; 2:5428-5440. [PMID: 36132026 PMCID: PMC9419095 DOI: 10.1039/d0na00644k] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Accepted: 10/21/2020] [Indexed: 06/15/2023]
Abstract
Nanomaterials are promising novel antibiotics, but often ineffective. We found that nanomaterial-bacteria complex formation occurred with various nanomaterials. The bactericidal activity of NMs strongly depends on their physical binding to (multidrug-resistant) bacteria. Nanomaterials' binding and antibiotic effect was reduced by various pathophysiological biomolecule coronas strongly inhibiting their antibiotic effects. We show from analytical to in vitro to in vivo that nanomaterial-based killing could be restored by acidic pH treatments. Here, complex formation of negatively-charged, plasma corona-covered, nanomaterials with bacteria was electrostatically enhanced by reducing bacteria's negative surface charge. Employing in vivo skin infection models, acidic pH-induced complex formation was critical to counteract Staphylococcus aureus infections by silver nanomaterials. We explain why nano-antibiotics show reduced activity and provide a clinically practical solution.
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Affiliation(s)
- Dana Westmeier
- ENT Department, University Medical Center Mainz Langenbeckstrasse 1 55131 Mainz Germany
| | - Svenja Siemer
- ENT Department, University Medical Center Mainz Langenbeckstrasse 1 55131 Mainz Germany
| | - Cecilia Vallet
- Department of Molecular Biology II, Center for Medical Biotechnology/Nanointegration (ZMB/CENIDE), University Duisburg-Essen, Universitätsstrasse 5 45117 Essen Germany
| | - Jörg Steinmann
- Institute of Medical Microbiology, University Hospital Essen, University Duisburg-Essen Hufelandstrasse 55 45112 Essen Germany
| | - Dominic Docter
- ENT Department, University Medical Center Mainz Langenbeckstrasse 1 55131 Mainz Germany
| | - Jan Buer
- Institute of Medical Microbiology, University Hospital Essen, University Duisburg-Essen Hufelandstrasse 55 45112 Essen Germany
| | - Shirley K Knauer
- Department of Molecular Biology II, Center for Medical Biotechnology/Nanointegration (ZMB/CENIDE), University Duisburg-Essen, Universitätsstrasse 5 45117 Essen Germany
| | - Roland H Stauber
- ENT Department, University Medical Center Mainz Langenbeckstrasse 1 55131 Mainz Germany
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15
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Paul MB, Stock V, Cara-Carmona J, Lisicki E, Shopova S, Fessard V, Braeuning A, Sieg H, Böhmert L. Micro- and nanoplastics - current state of knowledge with the focus on oral uptake and toxicity. Nanoscale Adv 2020; 2:4350-4367. [PMID: 36132901 PMCID: PMC9417819 DOI: 10.1039/d0na00539h] [Citation(s) in RCA: 92] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 08/20/2020] [Indexed: 05/18/2023]
Abstract
The production and use of plastics has constantly increased over the last 30 years. Over one third of the plastics is used in disposables, which are discarded within three years of their production. Despite efforts towards recycling, a substantial volume of debris has accumulated in the environment and is slowly degraded to micro- and nanoplastics by weathering and aging. It has recently been discovered that these small particles can enter the food chain, as for example demonstrated by the detection of microplastic particles in honey, beer, salt, sea food and recently in mineral water. Human exposure has further been documented by the detection of plastic microparticles in human feces. Potential toxic consequences of oral exposure to small plastic particles are discussed. Due to lacking data concerning exposure, biodistribution and related effects, the risk assessment of micro- and nanoplastics is still not possible. This review focuses on the oral uptake of plastic and polymer micro- and nanoparticles. Oral exposure, particle fate, changes of particle properties during ingestion and gastrointestinal digestion, and uptake and transport at the intestinal epithelium are reviewed in detail. Moreover, the interaction with intestinal and liver cells and possibly resulting toxicity are highlighted.
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Affiliation(s)
- Maxi B Paul
- German Federal Institute for Risk Assessment Max-Dohrn-Str. 8-10 10589 Berlin Germany +49 30 18412-3718
| | - Valerie Stock
- German Federal Institute for Risk Assessment Max-Dohrn-Str. 8-10 10589 Berlin Germany +49 30 18412-3718
| | - Julia Cara-Carmona
- German Federal Institute for Risk Assessment Max-Dohrn-Str. 8-10 10589 Berlin Germany +49 30 18412-3718
| | - Elisa Lisicki
- German Federal Institute for Risk Assessment Max-Dohrn-Str. 8-10 10589 Berlin Germany +49 30 18412-3718
| | - Sofiya Shopova
- German Federal Institute for Risk Assessment Max-Dohrn-Str. 8-10 10589 Berlin Germany +49 30 18412-3718
| | - Valérie Fessard
- ANSES, French Agency for Food, Environmental and Occupational Health and Safety 10B rue Claude Bourgelat 35306 Fougères France
| | - Albert Braeuning
- German Federal Institute for Risk Assessment Max-Dohrn-Str. 8-10 10589 Berlin Germany +49 30 18412-3718
| | - Holger Sieg
- German Federal Institute for Risk Assessment Max-Dohrn-Str. 8-10 10589 Berlin Germany +49 30 18412-3718
| | - Linda Böhmert
- German Federal Institute for Risk Assessment Max-Dohrn-Str. 8-10 10589 Berlin Germany +49 30 18412-3718
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16
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Cai X, Liu X, Jiang J, Gao M, Wang W, Zheng H, Xu S, Li R. Molecular Mechanisms, Characterization Methods, and Utilities of Nanoparticle Biotransformation in Nanosafety Assessments. Small 2020; 16:e1907663. [PMID: 32406193 DOI: 10.1002/smll.201907663] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 03/31/2020] [Accepted: 03/31/2020] [Indexed: 06/11/2023]
Abstract
It is a big challenge to reveal the intrinsic cause of a nanotoxic effect due to diverse branches of signaling pathways induced by engineered nanomaterials (ENMs). Biotransformation of toxic ENMs involving biochemical reactions between nanoparticles (NPs) and biological systems has recently attracted substantial attention as it is regarded as the upstream signal in nanotoxicology pathways, the molecular initiating event (MIE). Considering that different exposure routes of ENMs may lead to different interfaces for the arising of biotransformation, this work summarizes the nano-bio interfaces and dose calculation in inhalation, dermal, ingestion, and injection exposures to humans. Then, five types of biotransformation are shown, including aggregation and agglomeration, corona formation, decomposition, recrystallization, and redox reactions. Besides, the characterization methods for investigation of biotransformation as well as the safe design of ENMs to improve the sustainable development of nanotechnology are also discussed. Finally, future perspectives on the implications of biotransformation in clinical translation of nanomedicine and commercialization of nanoproducts are provided.
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Affiliation(s)
- Xiaoming Cai
- School of Public Health, Soochow University, Suzhou, Jiangsu, 215123, China
| | - Xi Liu
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Soochow University, Suzhou, Jiangsu, 215123, China
| | - Jun Jiang
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Soochow University, Suzhou, Jiangsu, 215123, China
| | - Meng Gao
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Soochow University, Suzhou, Jiangsu, 215123, China
| | - Weili Wang
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Soochow University, Suzhou, Jiangsu, 215123, China
| | - Huizhen Zheng
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Soochow University, Suzhou, Jiangsu, 215123, China
| | - Shujuan Xu
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Soochow University, Suzhou, Jiangsu, 215123, China
| | - Ruibin Li
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Soochow University, Suzhou, Jiangsu, 215123, China
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17
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Stauber RH, Westmeier D, Wandrey M, Becker S, Docter D, Ding GB, Thines E, Knauer SK, Siemer S. Mechanisms of nanotoxicity - biomolecule coronas protect pathological fungi against nanoparticle-based eradication. Nanotoxicology 2020; 14:1157-1174. [PMID: 32835557 DOI: 10.1080/17435390.2020.1808251] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 01/28/2023]
Abstract
Whereas nanotoxicity is intensely studied in mammalian systems, our knowledge of desired or unwanted nano-based effects for microbes is still limited. Fungal infections are global socio-economic health and agricultural problems, and current chemical antifungals may induce adverse side-effects in humans and ecosystems. Thus, nanoparticles are discussed as potential novel and sustainable antifungals via the desired nanotoxicity but often fail in practical applications. In our study, we found that nanoparticles' toxicity strongly depends on their binding to fungal spores, including the clinically relevant pathogen Aspergillus fumigatus as well as common plant pests, such as Botrytis cinerea or Penicillum expansum. Employing a selection of the model and antimicrobial nanoparticles, we found that nanoparticle-spore complex formation is influenced by the NM's physicochemical properties, such as size, identified as a key determinant for our silica model particles. Biomolecule coronas acquired in pathophysiologically and ecologically relevant environments, protected fungi against nanoparticle-induced toxicity as shown by employing antimicrobial ZnO, Ag, or CuO nanoparticles as well as dissolution-resistant quantum dots. Mechanistically, dose-dependent corona-mediated resistance was conferred via reducing the physical adsorption of nanoparticles to fungi. The inhibitory effect of biomolecules on nano-based toxicity of Ag NPs was further verified in vivo, using the invertebrate Galleria mellonella as an alternative non-mammalian infection model. We provide the first evidence that biomolecule coronas are not only relevant in mammalian systems but also for nanomaterial designs as future antifungals for human health, biotechnology, and agriculture.
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Affiliation(s)
| | - Dana Westmeier
- ENT Department, University Medical Center Mainz, Mainz, Germany
| | - Madita Wandrey
- ENT Department, University Medical Center Mainz, Mainz, Germany
| | - Sven Becker
- ENT Department, University Medical Center Mainz, Mainz, Germany
| | - Dominic Docter
- ENT Department, University Medical Center Mainz, Mainz, Germany
| | - Guo-Bin Ding
- Institute for Biotechnology, Shanxi University, Shanxi, China
| | - Eckhard Thines
- Institute for Microbiology, Johannes Gutenberg University, Mainz, Germany
| | - Shirley K Knauer
- Department of Molecular Biology II, Centre for Medical Biotechnology (ZMB)/Center for Nanointegration (CENIDE), University Duisburg-Essen, Essen, Germany
| | - Svenja Siemer
- ENT Department, University Medical Center Mainz, Mainz, Germany
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18
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Mangal U, Min YJ, Seo JY, Kim DE, Cha JY, Lee KJ, Kwon JS, Choi SH. Changes in tribological and antibacterial properties of poly(methyl methacrylate)-based 3D-printed intra-oral appliances by incorporating nanodiamonds. J Mech Behav Biomed Mater 2020; 110:103992. [PMID: 32750663 DOI: 10.1016/j.jmbbm.2020.103992] [Citation(s) in RCA: 12] [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] [Received: 05/31/2020] [Revised: 07/13/2020] [Accepted: 07/16/2020] [Indexed: 01/14/2023]
Abstract
It is essential for 3D-printed intra-oral appliances to be able to withstand the mechanical and microbial insult existent in the harsh environment of the oral cavity. Poly(methyl methacrylate) (PMMA)-based appliances are widely used in dentistry. Hence, the present study aimed to evaluate the role of nanodiamonds (NDs) as fillers to enhance the resistance to friction and wear. Using a solution-based mixing technique, 0.1 wt% ND was incorporated into the PMMA, and specimens were 3D-printed for tribological and bacterial analysis. The control specimens without ND fillers were tested against specimens with both amine-functionalized NDs (A-ND) and pure non-functionalized NDs (ND). The surface hardness test revealed a statistically significant increase in the Vickers micro-hardness (p < 0.001) in the nanocomposite groups. There was a significant reduction in the coefficient of friction (COF) (p < 0.01) in both the ND and A-ND nanocomposites compared to the stainless steel (SS) counter surfaces. However, for titanium (Ti)-based specimens, the COF of the control group was similar to that of A-ND but lower than that of ND. The wear resistance evaluation revealed that both the ND and A-ND groups displayed enhanced resistance to surface loss in comparison to the controls for both SS and Ti counter-surfaces (p < 0.001). Furthermore, both A-ND and ND exhibited significantly enhanced resistance to the formation of Streptococcus mutans biofilms after 48 h (p < 0.01) compared to the control group. Hence, we concluded that the addition of 0.1 wt% ND in the PMMA-based resin for 3D printing resulted in significant improvement in properties such as COF, wear resistance, and resistance to S. mutans, without any notable impact associated with the functionalization of the NDs.
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Affiliation(s)
- Utkarsh Mangal
- Department of Orthodontics, Institute of Craniofacial Deformity, Yonsei University College of Dentistry, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - You Jin Min
- Department of Mechanical Engineering, Yonsei University College of Engineering, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Ji-Young Seo
- Department of Orthodontics, Institute of Craniofacial Deformity, Yonsei University College of Dentistry, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Dae-Eun Kim
- Department of Mechanical Engineering, Yonsei University College of Engineering, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Jung-Yul Cha
- Department of Orthodontics, Institute of Craniofacial Deformity, Yonsei University College of Dentistry, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Kee-Joon Lee
- Department of Orthodontics, Institute of Craniofacial Deformity, Yonsei University College of Dentistry, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Jae-Sung Kwon
- Department and Research Institute of Dental Biomaterials and Bioengineering, Yonsei University College of Dentistry, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea; BK21 PLUS Project, Yonsei University College of Dentistry, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea.
| | - Sung-Hwan Choi
- Department of Orthodontics, Institute of Craniofacial Deformity, Yonsei University College of Dentistry, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea; BK21 PLUS Project, Yonsei University College of Dentistry, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea.
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19
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Mirlohi S. In Vitro Evaluation of Iron-Induced Salivary Lipid Oxidation Associated with Exposure to Iron Nanoparticles: Application Possibilities and Limitations for Food and Exposure Sciences. Int J Environ Res Public Health 2020; 17:E3622. [PMID: 32455755 DOI: 10.3390/ijerph17103622] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 05/15/2020] [Accepted: 05/17/2020] [Indexed: 01/01/2023]
Abstract
Zerovalent iron nanotechnologies are widely used for groundwater remediation and increasingly considered for advance oxidation treatment in drinking water applications. Iron nanoparticles have been detected in drinking water systems and considered for food fortification; therefore, the potential for human exposure through ingestion can be a concern. This study aimed to assess whether ingestion of iron nanoparticles from drinking water could be detected through flavor perception using In Vitro salivary lipid oxidation as an indicator for metallic flavor perception. Ten female subjects, aged 29–59 years, donated saliva samples for use in the In Vitro experiments. Test samples consisted of 1:1 mixture of saliva and bottled drinking water (control) and three treatment solutions, spiked with ferrous sulfate, stabilized zerovalent iron nanoparticles (nZVI), and an aggregated/microsized suspension of mixed zerovalent iron and microsized suspension of iron and iron oxide metal powder, (mZVI). Upon mixing, samples were subjected to 15 min incubation at 37 °C to resemble oral conditions. Salivary lipid oxidation (SLO) was measured in all samples as micromoles of thiobarbituric acid reactive substances (TBARS)/mg Fe. Exposure to iron in all three forms induced significant amount of SLO in all treatment samples as compared to the control (p < 0.0001). The mean SLO levels were the highest in the ferrous treatment, followed by nZVI and mZVI treatments; the differences in the mean SLO levels were significant (p < 0.05). The findings indicate that oral exposure to stabilized ZVI nanoparticles may induce sensory properties different from that of ferrous salt, likely predictive of diminished detection of metallic flavor by humans.
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20
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Kelly SH, Wu Y, Varadhan AK, Curvino EJ, Chong AS, Collier JH. Enabling sublingual peptide immunization with molecular self-assemblies. Biomaterials 2020; 241:119903. [PMID: 32143059 PMCID: PMC7171596 DOI: 10.1016/j.biomaterials.2020.119903] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Accepted: 02/16/2020] [Indexed: 12/13/2022]
Abstract
Short peptides are poorly immunogenic when delivered sublingually - under the tongue. Nanomaterial delivery of peptides could be utilized to improve immunogenicity towards designed sublingual vaccines, but nanomaterials have not been widely successful in sublingual vaccines owing to the challenges of transport through the sublingual mucosa. Here, we report that the sublingual immunogenicity of peptides is negligible, even in the presence of sublingual adjuvants or when PEGylated, but can be dramatically enhanced by assembly into supramolecular polymer-peptide nanofibers bearing low-molecular weight PEG, optimally between 2000 and 3000 Da. Neither PEGylation nor a sublingual adjuvant were capable of rendering peptides immunogenic without assembly into nanofibers. We found that PEG decreased nanofiber interactions with mucin and promoted longer residence time at the sublingual immunization site. Parallel investigations with shortened nanofibers indicated that the size of the assemblies had a surprisingly negligible influence over sublingual immunogenicity. In mice, optimized formulations were capable of raising strong and highly durable systemic antibody responses, antibodies in the upper respiratory and reproductive tracts, and systemic antigen-specific T-cell responses. These nanofiber-based sublingual vaccines were effective with both protein and nucleotide adjuvants and raised responses against both a model peptide epitope and a peptide epitope from M. tuberculosis. Further, PASylation (modification of nanofibers with peptide sequences rich in Pro, Ala, and Ser) could be substituted for PEGylation to also achieve sublingual immunogenicity. These findings indicated that surface properties supersede nanomaterial size in modulating sublingual nanomaterial immunogenicity, having important implications for the design of synthetic sublingual vaccines.
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Affiliation(s)
- Sean H Kelly
- Biomedical Engineering Department, Duke University, Durham, NC, 27708, United States
| | - Yaoying Wu
- Biomedical Engineering Department, Duke University, Durham, NC, 27708, United States
| | - Ajay K Varadhan
- Biomedical Engineering Department, Duke University, Durham, NC, 27708, United States
| | - Elizabeth J Curvino
- Biomedical Engineering Department, Duke University, Durham, NC, 27708, United States
| | - Anita S Chong
- Department of Surgery, The University of Chicago, Chicago, IL 60637, United States
| | - Joel H Collier
- Biomedical Engineering Department, Duke University, Durham, NC, 27708, United States.
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21
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Pokrowiecki R, Wojnarowicz J, Zareba T, Koltsov I, Lojkowski W, Tyski S, Mielczarek A, Zawadzki P. Nanoparticles And Human Saliva: A Step Towards Drug Delivery Systems For Dental And Craniofacial Biomaterials. Int J Nanomedicine 2019; 14:9235-9257. [PMID: 31819427 PMCID: PMC6886554 DOI: 10.2147/ijn.s221608] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [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] [Received: 07/02/2019] [Accepted: 09/27/2019] [Indexed: 12/02/2022] Open
Abstract
Aim The aims of this study were to investigate new nano-formulations based on ZnO and Ag nanoparticle (NP) compounds when used against clinical strains of oral gram-positive and gram-negative bacteria, and to examine the stability and behaviour of nano-formulation mixtures in saliva based on different compositions of Ag NPs, ZnO NPs and ZnO+x·Ag NPs. Methods: ZnO NPs with and without nanosilver were obtained by microwave solvothermal synthesis. Then, antibacterial activity was evaluated against bacteria isolated from human saliva. Behavior and nanoparticle solutions were evaluated in human saliva and control (artificial saliva and deionized water). Results were statistically compared. Results The NP mixtures had an average size of 30±3 nm, while the commercial Ag NPs had an average size of 55±5 nm. The suspensions displayed differing antibacterial activities and kinetics of destabilisation processes, depending on NPs composition and fluid types. Conclusion The present study showed that all NPs suspensions displayed significant destabilisation and high destabilisation over the 24 h of the analyses. The agglomeration processes of NPs in human saliva can be reversible.
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Affiliation(s)
- Rafal Pokrowiecki
- Department of Cranio-Maxillofacial Surgery, Oral Surgery and Implantology, Medical University of Warsaw, Warsaw, Poland.,Department of Antibiotics and Microbiology, National Medicines Institute, Warsaw, Poland.,Private Practice, Warsaw, Poland
| | - Jacek Wojnarowicz
- Institute of High Pressure Physics, Polish Academy of Sciences, Warsaw, Poland
| | - Tomasz Zareba
- Department of Antibiotics and Microbiology, National Medicines Institute, Warsaw, Poland
| | - Iwona Koltsov
- Institute of High Pressure Physics, Polish Academy of Sciences, Warsaw, Poland
| | - Witold Lojkowski
- Institute of High Pressure Physics, Polish Academy of Sciences, Warsaw, Poland
| | - Stefan Tyski
- Department of Antibiotics and Microbiology, National Medicines Institute, Warsaw, Poland.,Department of Pharmaceutical Microbiology, Medical University of Warsaw, Warsaw, Poland
| | - Agnieszka Mielczarek
- Department of Conservative Dentistry, Medical University of Warsaw, Warsaw, Poland
| | - Pawel Zawadzki
- Department of Cranio-Maxillofacial Surgery, Oral Surgery and Implantology, Medical University of Warsaw, Warsaw, Poland
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22
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Chang CC, Kuo-Dahab C, Chapman T, Mei Y. Anaerobic digestion, mixing, environmental fate, and transport. Water Environ Res 2019; 91:1210-1222. [PMID: 31433526 DOI: 10.1002/wer.1216] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 07/12/2019] [Accepted: 08/16/2019] [Indexed: 06/10/2023]
Abstract
This section covers research published during the calendar year 2018 on mixing and transport processes. The review covers mixing of anaerobic digesters, mixing of heat transfer, and environmental fate and transport.
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Affiliation(s)
- Chein-Chi Chang
- College of Environmental Science and Engineering, Dalian Maritime University, Dalian, China
- Department of Environmental Science and Engineering, School of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot, China
- Department of Engineering and Technical Services, DC Water and Sewer Authority, Washington, District of Columbia
| | - Camilla Kuo-Dahab
- Brown and Caldwell, Andover, Massachusetts
- Department of Civil and Environmental Engineering, University of Massachusetts-Amherst, Amherst, Massachusetts
| | | | - Ying Mei
- Department of Environmental Science and Engineering, School of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot, China
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23
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Klimek L, Casper I, Wollenberg B, Stauber R, Koennecke M. [Histamine receptors in chronic inflammatory diseases of the nose and paranasal sinuses]. HNO 2019; 67:389-400. [PMID: 30944947 DOI: 10.1007/s00106-019-0649-z] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Release of histamine from mast cells and basophils in inflammatory diseases of the nose and paranasal sinuses has been demonstrated in allergic and non-allergic processes. METHODS A selective literature search was conducted in PubMed and Medline, and publications in German-language journals were additionally analyzed. RESULTS The histamine receptors H1-H4 play a role in otorhinolaryngologic inflammatory diseases. To date, the histamine receptor subtype 4 (H4R), which is functionally expressed by immune cells in chronic inflammatory diseases, has received little attention. Stimulation of H4R influences the release of cytokines and chemokines as well as the migration behavior of immune cells. In animal models blockade of H4R reduced inflammation symptoms and pruritus. CONCLUSIONS H4R plays a key role in the pathogenesis of chronic inflammatory diseases and may represent an interesting future therapeutic target.
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Affiliation(s)
- L Klimek
- Zentrum für Rhinologie und Allergologie Wiesbaden, An den Quellen 10, 65183, Wiesbaden, Deutschland.
| | - I Casper
- Zentrum für Rhinologie und Allergologie Wiesbaden, An den Quellen 10, 65183, Wiesbaden, Deutschland
| | - B Wollenberg
- HNO-Universitätsklinik Lübeck, Lübeck, Deutschland
| | - R Stauber
- HNO-Universitätsklinik Mainz, Mainz, Deutschland
| | - M Koennecke
- HNO-Universitätsklinik Lübeck, Lübeck, Deutschland
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24
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Roblegg E, Coughran A, Sirjani D. Saliva: An all-rounder of our body. Eur J Pharm Biopharm 2019; 142:133-141. [PMID: 31220573 DOI: 10.1016/j.ejpb.2019.06.016] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 06/05/2019] [Accepted: 06/17/2019] [Indexed: 10/26/2022]
Abstract
Saliva is a multifaceted bodily fluid that is often taken for granted but is indispensable for oral health and overall well-being in humans. Although mainly comprised of water (99.5%), proteins, ions and enzymes turn saliva into a viscoelastic solution that performs a variety of vital tasks. This review article gives a brief overview of the salivary gland system, as well as the composition, output and functions of saliva. It also addresses the current applications of saliva for diagnostic purposes, the clinical relevance of saliva in oral diseases as well as current treatment options.
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Affiliation(s)
- Eva Roblegg
- University of Graz, Institute of Pharmaceutical Sciences, Pharmaceutical Technology and Biopharmacy, Universitaetsplatz 1, 8010 Graz, Austria.
| | - Alanna Coughran
- Department of Otolaryngology-Head and Neck Surgery, Stanford University, 801 Welch Road, Stanford, CA 94305, USA
| | - Davud Sirjani
- Department of Otolaryngology-Head and Neck Surgery, Stanford University, 801 Welch Road, Stanford, CA 94305, USA
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25
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Siemer S, Westmeier D, Vallet C, Becker S, Voskuhl J, Ding GB, Thines E, Stauber RH, Knauer SK. Resistance to Nano-Based Antifungals Is Mediated by Biomolecule Coronas. ACS Appl Mater Interfaces 2019; 11:104-114. [PMID: 30560648 DOI: 10.1021/acsami.8b12175] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Fungal infections are a growing global health and agricultural threat, and current chemical antifungals may induce various side-effects. Thus, nanoparticles are investigated as potential novel antifungals. We report that nanoparticles' antifungal activity strongly depends on their binding to fungal spores, focusing on the clinically important fungal pathogen Aspergillus fumigatus as well as common plant pathogens, such as Botrytis cinerea. We show that nanoparticle-spore complex formation was enhanced by the small nanoparticle size rather than the material, shape or charge, and could not be prevented by steric surface modifications. Fungal resistance to metal-based nanoparticles, such as ZnO-, Ag-, or CuO-nanoparticles as well as dissolution-resistant quantum dots, was mediated by biomolecule coronas acquired in pathophysiological and ecological environments, including the lung surfactant, plasma or complex organic matters. Mechanistically, dose-dependent corona-mediated resistance occurred via reducing physical adsorption of nanoparticles to fungal spores. The inhibitory effect of biomolecules on the antifungal activity of Ag-nanoparticles was further verified in vivo, using the invertebrate Galleria mellonella as an A. fumigatus infection model. Our results explain why current nanoantifungals often show low activity in realistic application environments, and will guide nanomaterial designs that maximize functionality and safe translatability as potent antifungals for human health, biotechnology, and agriculture.
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Affiliation(s)
- Svenja Siemer
- Nanobiomedicine Department , University Medical Center Mainz , Langenbeckstrasse 1 , 55131 Mainz , Germany
| | - Dana Westmeier
- Nanobiomedicine Department , University Medical Center Mainz , Langenbeckstrasse 1 , 55131 Mainz , Germany
| | | | - Sven Becker
- Nanobiomedicine Department , University Medical Center Mainz , Langenbeckstrasse 1 , 55131 Mainz , Germany
| | | | - Guo-Bin Ding
- Nanobiomedicine Department , University Medical Center Mainz , Langenbeckstrasse 1 , 55131 Mainz , Germany
- Institute for Biotechnology , Shanxi University , No. 92 Wucheng Road , 030006 Taiyuan , Shanxi , China
| | - Eckhard Thines
- Institute for Microbiology , Johannes Gutenberg University , Becherweg 15 , D 55128 Mainz , Germany
| | - Roland H Stauber
- Nanobiomedicine Department , University Medical Center Mainz , Langenbeckstrasse 1 , 55131 Mainz , Germany
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26
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Siemer S, Hahlbrock A, Vallet C, McClements DJ, Balszuweit J, Voskuhl J, Docter D, Wessler S, Knauer SK, Westmeier D, Stauber RH. Nanosized food additives impact beneficial and pathogenic bacteria in the human gut: a simulated gastrointestinal study. NPJ Sci Food 2018; 2:22. [PMID: 30882042 PMCID: PMC6420113 DOI: 10.1038/s41538-018-0030-8] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Nanotechnology provides the food industry with new ways to modulate various aspects of food. Hence, engineered nanoparticles (NPs) are increasingly added to food and beverage products as functional ingredients. However, the impact of engineered as well as naturally occurring NPs on both commensal and pathogenic microorganisms within the gastrointestinal tract (GI) is not fully understood. Here, well-defined synthetic NPs and bacterial models were used to probe nanoparticle–bacteria interactions, from analytical to in situ to in vitro. NP–bacteria complexation occurred most efficiently for small NPs, independent of their core material or surface charge, but could be reduced by NPs’ steric surface modifications. Adsorption to bacteria could also be demonstrated for naturally occurring carbon NPs isolated from beer. Complex formation affected the (patho)biological behavior of both the NPs and bacteria, including their cellular uptake into epithelial cells and phagocytes, pathogenic signaling pathways, and NP-induced cell toxicity. NP–bacteria complex formation was concentration-dependently reduced when the NPs became coated with biomolecule coronas with sequential simulation of first oral uptake and then the GI. However, efficient NP adsorption was restored when the pH was sufficiently low, such as in simulating the conditions of the stomach. Collectively, NP binding to enteric bacteria may impact their (patho)biology, particularly in the stomach. Nanosized-food additives as well as naturally occurring NPs may be exploited to (rationally) shape the microbiome. The information contained in this article should facilitate a “safe by design” strategy for the development and application of engineered NPs as functional foods ingredients. Engineered or naturally occurring nanoparticles could potentially affect the bacteria in the gut. A study led by Dana Westmeier and Roland Stauber from University Medical Center of Mainz, Germany probed the nanoparticle–bacteria interactions in situ. They found that NP–bacteria complex occurred most efficiently for small NPs, independent of their core material or surface charge. The complex formation affected the (patho)biological behavior of both the NPs and bacteria, particularly under conditions that simulate the stomach. The result shows that both engineered and naturally occurring nanoparticles could be exploited to shape the gut microbiome. The study can offer guidelines for future development and application of nanoparticles in food industry.
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Affiliation(s)
- Svenja Siemer
- Department of Nanobiomedicine/ENT, University Medical Center of Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany
| | - Angelina Hahlbrock
- Department of Nanobiomedicine/ENT, University Medical Center of Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany
| | - Cecilia Vallet
- Department of Molecular Biology II, Centre for Medical Biotechnology (ZMB), University Duisburg-Essen, Universitätsstraße 5, 45117 Essen, Germany
| | | | - Jan Balszuweit
- Institute for Organic Chemistry, University of Duisburg-Essen, Universitätsstraße 5, 45117 Essen, Germany
| | - Jens Voskuhl
- Institute for Organic Chemistry, University of Duisburg-Essen, Universitätsstraße 5, 45117 Essen, Germany
| | - Dominic Docter
- Department of Nanobiomedicine/ENT, University Medical Center of Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany
| | - Silja Wessler
- Department of Microbiology, Paris-Lodron University of Salzburg, A-5020 Salzburg, Austria
| | - Shirley K Knauer
- Department of Molecular Biology II, Centre for Medical Biotechnology (ZMB), University Duisburg-Essen, Universitätsstraße 5, 45117 Essen, Germany
| | - Dana Westmeier
- Department of Nanobiomedicine/ENT, University Medical Center of Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany
| | - Roland H Stauber
- Department of Nanobiomedicine/ENT, University Medical Center of Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany
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27
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Siemer S, Westmeier D, Barz M, Eckrich J, Wünsch D, Seckert C, Thyssen C, Schilling O, Hasenberg M, Pang C, Docter D, Knauer SK, Stauber RH, Strieth S. Biomolecule-corona formation confers resistance of bacteria to nanoparticle-induced killing: Implications for the design of improved nanoantibiotics. Biomaterials 2018; 192:551-559. [PMID: 30530244 DOI: 10.1016/j.biomaterials.2018.11.028] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Revised: 11/07/2018] [Accepted: 11/20/2018] [Indexed: 12/17/2022]
Abstract
Multidrug-resistant bacterial infections are a global health threat. Nanoparticles are thus investigated as novel antibacterial agents for clinical practice, including wound dressings and implants. We report that nanoparticles' bactericidal activity strongly depends on their physical binding to pathogens, including multidrug-resistant primary clinical isolates, such as Staphylococcus aureus, Klebsiella pneumoniae or Enterococcus faecalis. Using controllable nanoparticle models, we found that nanoparticle-pathogen complex formation was enhanced by small nanoparticle size rather than material or charge, and was prevented by 'stealth' modifications. Nanoparticles seem to preferentially bind to Gram-positive pathogens, such as Listeria monocytogenes, S. aureus or Streptococcus pyrogenes, correlating with enhanced antibacterial activity. Bacterial resistance to metal-based nanoparticles was mediated by biomolecule coronas acquired in pathophysiological environments, such as wounds, the lung, or the blood system. Biomolecule corona formation reduced nanoparticles' binding to pathogens, but did not impact nanoparticle dissolution. Our results provide a mechanistic explanation why nano-sized antibiotics may show reduced activity in clinically relevant environments, and may inspire future nanoantibiotic designs with improved and potentially pathogen-specific activity.
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Affiliation(s)
- Svenja Siemer
- Department of Nanobiomedicine/ENT, University Medical Center of Mainz, Langenbeckstrasse 1, 55101, Mainz, Germany
| | - Dana Westmeier
- Department of Nanobiomedicine/ENT, University Medical Center of Mainz, Langenbeckstrasse 1, 55101, Mainz, Germany
| | - Matthias Barz
- Institute for Organic Chemistry, Johannes Gutenberg University, Duesbergweg 10-14, D-55099, Mainz, Germany
| | - Jonas Eckrich
- Department of Nanobiomedicine/ENT, University Medical Center of Mainz, Langenbeckstrasse 1, 55101, Mainz, Germany
| | - Désirée Wünsch
- Department of Nanobiomedicine/ENT, University Medical Center of Mainz, Langenbeckstrasse 1, 55101, Mainz, Germany
| | - Christof Seckert
- Institute for Medical Microbiology and Hygiene, University Medical Center Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Christian Thyssen
- Biofilm Centre, University Duisburg-Essen, Universitätsstraße 5, 45117, Essen, Germany
| | - Oliver Schilling
- Institute of Institute of Surgical Pathology/Translational Proteomics, University of Freiburg, Breisacher Strasse 115a, 79106, Freiburg, Germany
| | - Mike Hasenberg
- Institute for Experimental Immunology and Imaging, University Hospital, University Duisburg-Essen, Universitätsstraße 2, 45141 Essen, Germany
| | - Chengfang Pang
- Department of Environmental Engineering, Technical University of Denmark, Miljøvej 115, 2800, Kgs. Lyngby, Denmark
| | - Dominic Docter
- Department of Nanobiomedicine/ENT, University Medical Center of Mainz, Langenbeckstrasse 1, 55101, Mainz, Germany
| | - Shirley K Knauer
- Department of Molecular Biology II, Centre for Medical Biotechnology (ZMB)/CENIDE, University Duisburg-Essen, Universitätsstraße 5, 45117 Essen, Germany
| | - Roland H Stauber
- Department of Nanobiomedicine/ENT, University Medical Center of Mainz, Langenbeckstrasse 1, 55101, Mainz, Germany.
| | - Sebastian Strieth
- Department of Nanobiomedicine/ENT, University Medical Center of Mainz, Langenbeckstrasse 1, 55101, Mainz, Germany.
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Hernández-Martínez LF, Chávez-Navarro MA, González-Tovar E, Chávez-Páez M. A Monte Carlo study of the electrical double layer of a shape-asymmetric electrolyte around a spherical colloid. J Chem Phys 2018; 149:164905. [PMID: 30384730 DOI: 10.1063/1.5038797] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
In this paper, we present a Monte Carlo simulation study on the structure of the electrical double layer around a spherical colloid surrounded by a binary electrolyte composed of spherical and non-spherical ions. Results are provided for the radial distribution functions between the colloid and ions, the orientation correlations between the colloid and non-spherical particles, and the integrated charge. Work is reported mainly for non-spherical particles modeled as spherocylinders, although a particular comparison is made between spherocylindrical particles and dimers. For the conditions investigated here, spherocylinders and dimers produce essentially the same structural information. Additionally, it is shown that spherocylinders mostly orient tangentially to the colloid at its surface; this preferred orientation disappears for larger distances. We also evidence that, near the colloid, the integrated charge attenuates monotonically when the macroparticle is highly charged, whereas for intermediate and low charged states of the colloid, the integrated charge can display charge reversal, overcharging, or both, with magnitudes that are sensitive to the salt concentration and to the localization of charge inside the spherocylinders.
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Affiliation(s)
| | - Moisés Alfonso Chávez-Navarro
- Instituto de Física, Universidad Autónoma de San Luis Potosí, Álvaro Obregón 64, 78000 San Luis Potosí, S.L.P., Mexico
| | - Enrique González-Tovar
- Instituto de Física, Universidad Autónoma de San Luis Potosí, Álvaro Obregón 64, 78000 San Luis Potosí, S.L.P., Mexico
| | - Martín Chávez-Páez
- Instituto de Física, Universidad Autónoma de San Luis Potosí, Álvaro Obregón 64, 78000 San Luis Potosí, S.L.P., Mexico
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