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Matter MT, Probst S, Läuchli S, Herrmann IK. Uniting Drug and Delivery: Metal Oxide Hybrid Nanotherapeutics for Skin Wound Care. Pharmaceutics 2020; 12:E780. [PMID: 32824470 PMCID: PMC7465174 DOI: 10.3390/pharmaceutics12080780] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 08/10/2020] [Accepted: 08/12/2020] [Indexed: 02/06/2023] Open
Abstract
Wound care and soft tissue repair have been a major human concern for millennia. Despite considerable advancements in standards of living and medical abilities, difficult-to-heal wounds remain a major burden for patients, clinicians and the healthcare system alike. Due to an aging population, the rise in chronic diseases such as vascular disease and diabetes, and the increased incidence of antibiotic resistance, the problem is set to worsen. The global wound care market is constantly evolving and expanding, and has yielded a plethora of potential solutions to treat poorly healing wounds. In ancient times, before such a market existed, metals and their ions were frequently used in wound care. In combination with plant extracts, they were used to accelerate the healing of burns, cuts and combat wounds. With the rise of organic chemistry and small molecule drugs and ointments, researchers lost their interest in inorganic materials. Only recently, the advent of nano-engineering has given us a toolbox to develop inorganic materials on a length-scale that is relevant to wound healing processes. The robustness of synthesis, as well as the stability and versatility of inorganic nanotherapeutics gives them potential advantages over small molecule drugs. Both bottom-up and top-down approaches have yielded functional inorganic nanomaterials, some of which unite the wound healing properties of two or more materials. Furthermore, these nanomaterials do not only serve as the active agent, but also as the delivery vehicle, and sometimes as a scaffold. This review article provides an overview of inorganic hybrid nanotherapeutics with promising properties for the wound care field. These therapeutics include combinations of different metals, metal oxides and metal ions. Their production, mechanism of action and applicability will be discussed in comparison to conventional wound healing products.
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Affiliation(s)
- Martin T. Matter
- Nanoparticle Systems Engineering Laboratory, Institute of Energy and Process Engineering, Department of Mechanical and Process Engineering, ETH Zurich, Sonneggstrasse 3, 8092 Zurich, Switzerland;
- Laboratory for Particles-Biology Interactions, Department of Materials Meet Life, Swiss Federal Laboratories for Materials Science and Technology (Empa), Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
| | - Sebastian Probst
- School of Health Sciences, HES-SO University of Applied Sciences and Arts Western Switzerland, Avenue de Champel 47, 1206 Geneva, Switzerland;
| | - Severin Läuchli
- Department of Dermatology, University Hospital Zurich, Rämistrasse 100, 8091 Zurich, Switzerland;
| | - Inge K. Herrmann
- Nanoparticle Systems Engineering Laboratory, Institute of Energy and Process Engineering, Department of Mechanical and Process Engineering, ETH Zurich, Sonneggstrasse 3, 8092 Zurich, Switzerland;
- Laboratory for Particles-Biology Interactions, Department of Materials Meet Life, Swiss Federal Laboratories for Materials Science and Technology (Empa), Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
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Pollini M, Paladini F. Bioinspired Materials for Wound Healing Application: The Potential of Silk Fibroin. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E3361. [PMID: 32751205 PMCID: PMC7436046 DOI: 10.3390/ma13153361] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 07/22/2020] [Accepted: 07/27/2020] [Indexed: 12/12/2022]
Abstract
Nature is an incredible source of inspiration for scientific research due to the multiple examples of sophisticated structures and architectures which have evolved for billions of years in different environments. Numerous biomaterials have evolved toward high level functions and performances, which can be exploited for designing novel biomedical devices. Naturally derived biopolymers, in particular, offer a wide range of chances to design appropriate substrates for tissue regeneration and wound healing applications. Wound management still represents a challenging field which requires continuous efforts in scientific research for definition of novel approaches to facilitate and promote wound healing and tissue regeneration, particularly where the conventional therapies fail. Moreover, big concerns associated to the risk of wound infections and antibiotic resistance have stimulated the scientific research toward the definition of products with simultaneous regenerative and antimicrobial properties. Among the bioinspired materials for wound healing, this review focuses attention on a protein derived from the silkworm cocoon, namely silk fibroin, which is characterized by incredible biological features and wound healing capability. As demonstrated by the increasing number of publications, today fibroin has received great attention for providing valuable options for fabrication of biomedical devices and products for tissue engineering. In combination with antimicrobial agents, particularly with silver nanoparticles, fibroin also allows the development of products with improved wound healing and antibacterial properties. This review aims at providing the reader with a comprehensive analysis of the most recent findings on silk fibroin, presenting studies and results demonstrating its effective role in wound healing and its great potential for wound healing applications.
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Affiliation(s)
- Mauro Pollini
- Department of Engineering for Innovation, University of Salento, Via Monteroni, 73100 Lecce, Italy
- Caresilk S.r.l.s., Via Monteroni c/o Technological District DHITECH, 73100 Lecce, Italy
| | - Federica Paladini
- Department of Engineering for Innovation, University of Salento, Via Monteroni, 73100 Lecce, Italy
- Caresilk S.r.l.s., Via Monteroni c/o Technological District DHITECH, 73100 Lecce, Italy
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3
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Lotus seedpod-inspired hydrogels as an all-in-one platform for culture and delivery of stem cell spheroids. Biomaterials 2019; 225:119534. [DOI: 10.1016/j.biomaterials.2019.119534] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 09/05/2019] [Accepted: 09/28/2019] [Indexed: 01/01/2023]
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Brulé V, Rafsanjani A, Asgari M, Western TL, Pasini D. Three-dimensional functional gradients direct stem curling in the resurrection plant Selaginella lepidophylla. J R Soc Interface 2019; 16:20190454. [PMID: 31662070 PMCID: PMC6833318 DOI: 10.1098/rsif.2019.0454] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Accepted: 10/10/2019] [Indexed: 12/16/2022] Open
Abstract
Upon hydration and dehydration, the vegetative tissue of Selaginella lepidophylla can reversibly swell and shrink to generate complex morphological transformations. Here, we investigate how structural and compositional properties at tissue and cell wall levels in S. lepidophylla lead to different stem curling profiles between inner and outer stems. Our results show that directional bending in both stem types is associated with cross-sectional gradients of tissue density, cell orientation and secondary cell wall composition between adaxial and abaxial stem sides. In inner stems, longitudinal gradients of cell wall thickness and composition affect tip-to-base tissue swelling and shrinking, allowing for more complex curling as compared to outer stems. Together, these features yield three-dimensional functional gradients that allow the plant to reproducibly deform in predetermined patterns that vary depending on the stem type. This study is the first to demonstrate functional gradients at different hierarchical levels combining to operate in a three-dimensional context.
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Affiliation(s)
- Véronique Brulé
- Department of Biology, McGill University, 1205 Avenue Docteur Penfield, Montréal, QC, CanadaH3A 1B1
| | - Ahmad Rafsanjani
- Department of Mechanical Engineering, McGill University, 817 Sherbrooke Street West, Montréal, QC, CanadaH3A 0C3
- Department of Materials, ETH Zürich, 8093 Zürich, Switzerland
| | - Meisam Asgari
- Department of Mechanical Engineering, McGill University, 817 Sherbrooke Street West, Montréal, QC, CanadaH3A 0C3
- Theoretical and Applied Mechanics Program, Northwestern University, Evanston, IL 60208, USA
| | - Tamara L. Western
- Department of Biology, McGill University, 1205 Avenue Docteur Penfield, Montréal, QC, CanadaH3A 1B1
| | - Damiano Pasini
- Department of Mechanical Engineering, McGill University, 817 Sherbrooke Street West, Montréal, QC, CanadaH3A 0C3
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Green DW, Watson JA, Jung HS, Watson GS. Natural History Collections as Inspiration for Technology. Bioessays 2019; 41:e1700238. [PMID: 30775795 DOI: 10.1002/bies.201700238] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 11/08/2018] [Indexed: 12/30/2022]
Abstract
Living organisms are the ultimate survivalists, having evolved phenotypes with unprecedented adaptability, ingenuity, resourcefulness, and versatility compared to human technology. To harness these properties, functional descriptions and design principles from all sources of biodiversity information must be collated - including the hundreds of thousands of possible survival features manifest in natural history museum collections, which represent 12% of total global biodiversity. This requires a consortium of expert biologists from a range of disciplines to convert the observations, data, and hypotheses into the language of engineering. We hope to unite multidisciplinary biologists and natural history museum scientists to maximize the coverage of observations, descriptions, and hypotheses relating to adaptation and function across biodiversity, to make it technologically useful. This is to be achieved by developments in meta- taxonomic classification, phylogenetics, systematics, biological materials research, structure and morphological characterizations, and ecological data gathering from the collections - the aim being to identify and catalogue features essential for good biomimetic design.
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Affiliation(s)
- David W Green
- Dr. D. W. Green, Prof. H.-S. Jung, Division in Anatomy and Developmental Biology, Department of Oral Biology, Oral Science Research Center, BK21 PLUS Project, Yonsei University College of Dentistry, Seoul, Korea
| | - Jolanta A Watson
- Dr. J. A. Watson, Dr. G. S. Watson, School of Science and Engineering, University of the Sunshine Coast, Fraser Coast, Hervey Bay, QL, 4655, Australia
| | - Han-Sung Jung
- Dr. D. W. Green, Prof. H.-S. Jung, Division in Anatomy and Developmental Biology, Department of Oral Biology, Oral Science Research Center, BK21 PLUS Project, Yonsei University College of Dentistry, Seoul, Korea
| | - Gregory S Watson
- Dr. J. A. Watson, Dr. G. S. Watson, School of Science and Engineering, University of the Sunshine Coast, Fraser Coast, Hervey Bay, QL, 4655, Australia
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Clark EG, Hutchinson JR, Darroch SAF, Mongiardino Koch N, Brady TR, Smith SA, Briggs DEG. Integrating morphology and in vivo skeletal mobility with digital models to infer function in brittle star arms. J Anat 2018; 233:696-714. [PMID: 30353539 PMCID: PMC6231174 DOI: 10.1111/joa.12887] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/21/2018] [Indexed: 12/15/2022] Open
Abstract
Brittle stars (Phylum Echinodermata, Class Ophiuroidea) have evolved rapid locomotion employing muscle and skeletal elements within their (usually) five arms to apply forces in a manner analogous to that of vertebrates. Inferring the inner workings of the arm has been difficult as the skeleton is internal and many of the ossicles are sub-millimeter in size. Advances in 3D visualization and technology have made the study of movement in ophiuroids possible. We developed six virtual 3D skeletal models to demonstrate the potential range of motion of the main arm ossicles, known as vertebrae, and six virtual 3D skeletal models of non-vertebral ossicles. These models revealed the joint center and relative position of the arm ossicles during near-maximal range of motion. The models also provide a platform for the comparative evaluation of functional capabilities between disparate ophiuroid arm morphologies. We made observations on specimens of Ophioderma brevispina and Ophiothrix angulata. As these two taxa exemplify two major morphological categories of ophiuroid vertebrae, they provide a basis for an initial assessment of the functional consequences of these disparate vertebral morphologies. These models suggest potential differences in the structure of the intervertebral articulations in these two species, implying disparities in arm flexion mechanics. We also evaluated the differences in the range of motion between segments in the proximal and distal halves of the arm length in a specimen of O. brevispina, and found that the morphology of vertebrae in the distal portion of the arm allows for higher mobility than in the proximal portion. Our models of non-vertebral ossicles show that they rotate further in the direction of movement than the vertebrae themselves in order to accommodate arm flexion. These findings raise doubts over previous hypotheses regarding the functional consequences of ophiuroid arm disparity. Our study demonstrates the value of integrating experimental data and visualization of articulated structures when making functional interpretations instead of relying on observations of vertebral or segmental morphology alone. This methodological framework can be applied to other ophiuroid taxa to enable comparative functional analyses. It will also facilitate biomechanical analyses of other invertebrate groups to illuminate how appendage or locomotor function evolved.
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Affiliation(s)
| | - John R. Hutchinson
- Structure and Motion LaboratoryDepartment of Comparative Biomedical SciencesThe Royal Veterinary CollegeHertfordshireUK
| | - Simon A. F. Darroch
- Department of Earth and Environmental ScienceVanderbilt UniversityNashvilleTNUSA
| | | | - Travis R. Brady
- Department of Biomedical EngineeringYale UniversityNew HavenCTUSA
| | - Sloane A. Smith
- Department of Biomedical EngineeringYale UniversityNew HavenCTUSA
| | - Derek E. G. Briggs
- Department of Geology and GeophysicsYale UniversityNew HavenCTUSA
- Yale Peabody Museum of Natural HistoryYale UniversityNew HavenCTUSA
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Natural and Synthetic Coral Biomineralization for Human Bone Revitalization. Trends Biotechnol 2016; 35:43-54. [PMID: 27889241 DOI: 10.1016/j.tibtech.2016.10.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Revised: 08/12/2016] [Accepted: 10/05/2016] [Indexed: 01/27/2023]
Abstract
Coral skeletons can regenerate replacement human bone in nonload-bearing excavated skeletal locations. A combination of multiscale, interconnected pores and channels and highly bioactive surface chemistry has established corals as an important alternative to using healthy host bone replacements. Here, we highlight how coral skeletal systems are being remolded into new calcified structures or synthetic corals by biomimetic processes, as places for the organized permeation of bone tissue cells and blood vessels. Progressive technologies in coral aquaculture and self-organization inorganic chemistry are helping to modify natural corals and create synthetic coral architectures able to accelerate bone regeneration with proper host integration at more skeletal locations, adapted to recent surgical techniques and used to treat intrinsic skeletal deformities and metabolic conditions.
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Echazú MIA, Tuttolomondo MV, Foglia ML, Mebert AM, Alvarez GS, Desimone MF. Advances in collagen, chitosan and silica biomaterials for oral tissue regeneration: from basics to clinical trials. J Mater Chem B 2016; 4:6913-6929. [DOI: 10.1039/c6tb02108e] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Different materials have distinct surface and bulk characteristics; each of them potentially useful for the treatment of a particular wound or disease.
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Affiliation(s)
- Maria Inés Alvarez Echazú
- Universidad de Buenos Aires
- Instituto de Química y Metabolismo del Fármaco (IQUIMEFA)
- Facultad de Farmacia y Bioquímica
- Ciudad Autónoma de Buenos Aires
- Argentina
| | - Maria Victoria Tuttolomondo
- Universidad de Buenos Aires
- Instituto de Química y Metabolismo del Fármaco (IQUIMEFA)
- Facultad de Farmacia y Bioquímica
- Ciudad Autónoma de Buenos Aires
- Argentina
| | - Maria Lucia Foglia
- Universidad de Buenos Aires
- Instituto de Química y Metabolismo del Fármaco (IQUIMEFA)
- Facultad de Farmacia y Bioquímica
- Ciudad Autónoma de Buenos Aires
- Argentina
| | - Andrea Mathilde Mebert
- Universidad de Buenos Aires
- Instituto de Química y Metabolismo del Fármaco (IQUIMEFA)
- Facultad de Farmacia y Bioquímica
- Ciudad Autónoma de Buenos Aires
- Argentina
| | - Gisela Solange Alvarez
- Universidad de Buenos Aires
- Instituto de Química y Metabolismo del Fármaco (IQUIMEFA)
- Facultad de Farmacia y Bioquímica
- Ciudad Autónoma de Buenos Aires
- Argentina
| | - Martin Federico Desimone
- Universidad de Buenos Aires
- Instituto de Química y Metabolismo del Fármaco (IQUIMEFA)
- Facultad de Farmacia y Bioquímica
- Ciudad Autónoma de Buenos Aires
- Argentina
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Mele E. Electrospinning of natural polymers for advanced wound care: towards responsive and adaptive dressings. J Mater Chem B 2016; 4:4801-4812. [DOI: 10.1039/c6tb00804f] [Citation(s) in RCA: 140] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Nanofibrous dressings produced by electrospinning proteins and polysaccharides are highly promising candidates in promoting wound healing and skin regeneration.
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Affiliation(s)
- E. Mele
- Department of Materials
- Loughborough University
- Loughborough
- UK
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