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Meuwese RT, Versteeg EM, van Drongelen J, de Hoog D, Bouwhuis D, Vandenbussche FP, van Kuppevelt TH, Daamen WF. A collagen plug with shape memory to seal iatrogenic fetal membrane defects after fetoscopic surgery. Bioact Mater 2023; 20:463-471. [PMID: 35800408 PMCID: PMC9249610 DOI: 10.1016/j.bioactmat.2022.06.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 05/20/2022] [Accepted: 06/12/2022] [Indexed: 12/04/2022] Open
Abstract
Iatrogenic preterm premature rupture of fetal membranes (iPPROM) after fetal surgery remains a strong trigger for premature birth. As fetal membrane defects do not heal spontaneously and amniotic fluid leakage and chorioamniotic membrane separation may occur, we developed a biocompatible, fetoscopically-applicable collagen plug with shape memory to prevent leakage. This plug expands directly upon employment and seals fetal membranes, hence preventing amniotic fluid leakage and potentially iPPROM. Lyophilized type I collagen plugs were given shape memory and crimped to fit through a fetoscopic cannula (Ø 3 mm). Expansion of the plug was examined in phosphate buffered saline (PBS). Its sealing capacity was studied ex vivo using human fetal membranes, and in situ in a porcine bladder model. The crimped plug with shape memory expanded and tripled in diameter within 1 min when placed into PBS, whereas a crimped plug without shape memory did not. In both human fetal membranes and porcine bladder, the plug expanded in the defect, secured itself and sealed the defect without membrane rupture. In conclusion, collagen plugs with shape memory are promising as medical device for rapid sealing of fetoscopic defects in fetal membranes at the endoscopic entry point. Shape memory can be given to collagen plugs to rapidly expand in aqueous fluids. Within 1 min in aqueous fluid, collagen plugs with shape memory triple in diameter. Collagen plugs with shape memory show potency to seal fetal membrane defects.
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Koch NG, Baumann T, Nickling JH, Dziegielewski A, Budisa N. Engineered bacterial host for genetic encoding of physiologically stable protein nitration. Front Mol Biosci 2022; 9:992748. [PMID: 36353730 PMCID: PMC9638147 DOI: 10.3389/fmolb.2022.992748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 09/16/2022] [Indexed: 11/23/2022] Open
Abstract
Across scales, many biological phenomena, such as protein folding or bioadhesion and cohesion, rely on synergistic effects of different amino acid side chains at multiple positions in the protein sequence. These are often fine-tuned by post-translational modifications that introduce additional chemical properties. Several PTMs can now be genetically encoded and precisely installed at single and multiple sites by genetic code expansion. Protein nitration is a PTM of particular interest because it has been associated with several diseases. However, even when these nitro groups are directly incorporated into proteins, they are often physiologically reduced during or shortly after protein production. We have solved this problem by using an engineered Escherichia coli host strain. Six genes that are associated with nitroreductase activity were removed from the genome in a simple and robust manner. The result is a bacterial expression host that can stably produce proteins and peptides containing nitro groups, especially when these are amenable to modification. To demonstrate the applicability of this strain, we used this host for several applications. One of these was the multisite incorporation of a photocaged 3,4-dihydroxyphenylalanine derivative into Elastin-Like Polypeptides. For this non-canonical amino acid and several other photocaged ncAAs, the nitro group is critical for photocleavability. Accordingly, our approach also enhances the production of biomolecules containing photocaged tyrosine in the form of ortho-nitrobenzyl-tyrosine. We envision our engineered host as an efficient tool for the production of custom designed proteins, peptides or biomaterials for various applications ranging from research in cell biology to large-scale production in biotechnology.
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Affiliation(s)
- Nikolaj G. Koch
- Bioanalytics Group, Institute of Biotechnology, Technische Universität Berlin, Berlin, Germany
- Biocatalysis Group, Institute of Chemistry, Technische Universität Berlin, Berlin, Germany
| | - Tobias Baumann
- Biocatalysis Group, Institute of Chemistry, Technische Universität Berlin, Berlin, Germany
| | - Jessica H. Nickling
- Biocatalysis Group, Institute of Chemistry, Technische Universität Berlin, Berlin, Germany
| | - Anna Dziegielewski
- Biocatalysis Group, Institute of Chemistry, Technische Universität Berlin, Berlin, Germany
| | - Nediljko Budisa
- Biocatalysis Group, Institute of Chemistry, Technische Universität Berlin, Berlin, Germany
- Chemical Synthetic Biology Group, Department of Chemistry, University of Manitoba, Winnipeg, MB, Canada
- *Correspondence: Nediljko Budisa,
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Horbelt N, Fratzl P, Harrington MJ. Mistletoe viscin: a hygro- and mechano-responsive cellulose-based adhesive for diverse material applications. PNAS NEXUS 2022; 1:pgac026. [PMID: 36712808 PMCID: PMC9802232 DOI: 10.1093/pnasnexus/pgac026] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 01/07/2022] [Accepted: 03/09/2022] [Indexed: 04/23/2023]
Abstract
Mistletoe viscin is a natural cellulosic adhesive consisting of hierarchically organized cellulose microfibrils (CMFs) surrounded by a humidity-responsive matrix that enables mechanical drawing into stiff and sticky fibers. Here, we explored the processability and adhesive capacity of viscin and demonstrated its potential as a source material for various material applications, as well as a source for bioinspired design. Specifically, we revealed that viscin fibers exhibit humidity-activated self-adhesive properties that enable "contact welding" into complex 2D and 3D architectures under ambient conditions. We additionally discovered that viscin can be processed into stiff and transparent free-standing films via biaxial stretching in the hydrated state, followed by drying, whereby CMFs align along local stress fields. Furthermore, we determined that viscin adheres strongly to both synthetic materials (metals, plastics, and glass) and biological tissues, such as skin and cartilage. In particular, skin adhesion makes viscin a compelling candidate as a wound sealant, as we further demonstrate. These findings highlight the enormous potential of this hygro- and mechano-responsive fiber-reinforced adhesive for bioinspired and biomedical applications.
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Affiliation(s)
- Nils Horbelt
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, Potsdam 14424, Germany
| | - Peter Fratzl
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, Potsdam 14424, Germany
| | - Matthew J Harrington
- To whom correspondence should be addressed: Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, Quebec H3A 0B8, Canada.
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Affiliation(s)
- Youbing Mu
- Key Laboratory of Optoelectronic Chemical Materials and Devices, Ministry of Education, School of Optoelectronic Materials and Technology, Jianghan University, Wuhan, P. R. China
| | - Qian Sun
- Key Laboratory of Optoelectronic Chemical Materials and Devices, Ministry of Education, School of Optoelectronic Materials and Technology, Jianghan University, Wuhan, P. R. China
| | - Bowen Li
- Key Laboratory of Optoelectronic Chemical Materials and Devices, Ministry of Education, School of Optoelectronic Materials and Technology, Jianghan University, Wuhan, P. R. China
| | - Xiaobo Wan
- Key Laboratory of Optoelectronic Chemical Materials and Devices, Ministry of Education, School of Optoelectronic Materials and Technology, Jianghan University, Wuhan, P. R. China
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Zhao Y, Song S, Ren X, Zhang J, Lin Q, Zhao Y. Supramolecular Adhesive Hydrogels for Tissue Engineering Applications. Chem Rev 2022; 122:5604-5640. [PMID: 35023737 DOI: 10.1021/acs.chemrev.1c00815] [Citation(s) in RCA: 170] [Impact Index Per Article: 85.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Tissue engineering is a promising and revolutionary strategy to treat patients who suffer the loss or failure of an organ or tissue, with the aim to restore the dysfunctional tissues and enhance life expectancy. Supramolecular adhesive hydrogels are emerging as appealing materials for tissue engineering applications owing to their favorable attributes such as tailorable structure, inherent flexibility, excellent biocompatibility, near-physiological environment, dynamic mechanical strength, and particularly attractive self-adhesiveness. In this review, the key design principles and various supramolecular strategies to construct adhesive hydrogels are comprehensively summarized. Thereafter, the recent research progress regarding their tissue engineering applications, including primarily dermal tissue repair, muscle tissue repair, bone tissue repair, neural tissue repair, vascular tissue repair, oral tissue repair, corneal tissue repair, cardiac tissue repair, fetal membrane repair, hepatic tissue repair, and gastric tissue repair, is systematically highlighted. Finally, the scientific challenges and the remaining opportunities are underlined to show a full picture of the supramolecular adhesive hydrogels. This review is expected to offer comparative views and critical insights to inspire more advanced studies on supramolecular adhesive hydrogels and pave the way for different fields even beyond tissue engineering applications.
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Affiliation(s)
- Yue Zhao
- Joint Research Center for Molecular Science, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China.,College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China.,Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371.,State Key Lab of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China
| | - Shanliang Song
- College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Xiangzhong Ren
- Joint Research Center for Molecular Science, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China
| | - Junmin Zhang
- Joint Research Center for Molecular Science, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China
| | - Quan Lin
- State Key Lab of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China
| | - Yanli Zhao
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
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Avilla-Royo E, Ochsenbein-Kölble N, Vonzun L, Ehrbar M. Biomaterial-based treatments for the prevention of preterm birth after iatrogenic rupture of the fetal membranes. Biomater Sci 2022; 10:3695-3715. [DOI: 10.1039/d2bm00401a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Minimally invasive interventions to ameliorate or correct fetal abnormalities are becoming a clinical reality. However, the iatrogenic premature preterm rupture of the fetal membranes (FMs) (iPPROM), which may result in...
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Devaud YR, Stäuble S, Moehrlen U, Weisskopf M, Vonzun L, Zimmermann R, Ehrbar M, Ochsenbein-Kölble N. Minimally Invasive Precise Application of Bioadhesives to Prevent IPPROM on a Pregnant Sheep Model. Fetal Diagn Ther 2021; 48:785-793. [PMID: 34814145 DOI: 10.1159/000519910] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Accepted: 09/10/2021] [Indexed: 11/19/2022]
Abstract
INTRODUCTION Iatrogenic preterm premature rupture of the membrane remains the Achille's heel of fetoscopy. The aim of this study was to show in vivo feasibility of fetal membrane (FM) defect sealing by the application of tissue glues with umbrella-shaped receptors. METHODS First, we adapted our previously described ex vivo strategy and evaluated the adhesion strength of different tissue glues, Histoacryl® and Glubran2®, by bonding polytetrafluoroethylene or silicone encapsulated nitinol glue receptor to human FM. Then, we exposed pregnant sheep uterus through a laparotomy and placed a 10-French trocar into the amniotic cavity through which the umbrella-shaped glue receptor (n = 9) was inserted and fixated onto the FM with the tissue glues (n = 8). The tightness of the sealed defects was assessed 4 h post-surgery. RESULTS Both tissue glues tested resulted in adhesion of the glue receptors to the FM ex vivo. In vivo, all glue receptors opened in the amniotic cavity (n = 9) and all successfully placed glue receptors sealed the FM defect (n = 8). Four hours post-surgery, 2 treatment sites showed minimal leakage whereas the negative control without glue (n = 1) showed substantial leakage. DISCUSSION This in vivo study confirms that fetoscopically induced FM defects can be sealed by the application of tissue adhesives.
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Affiliation(s)
- Yannick R Devaud
- Department of Obstetrics, University Hospital Zurich, Zurich, Switzerland.,University of Zurich, Zurich, Switzerland
| | - Senta Stäuble
- Department of Obstetrics, University Hospital Zurich, Zurich, Switzerland.,University of Zurich, Zurich, Switzerland
| | - Ueli Moehrlen
- University of Zurich, Zurich, Switzerland.,Pediatric Surgery, University Children's Hospital Zurich, Zurich, Switzerland.,The Zurich Center for Fetal Diagnosis and Therapy, Zurich, Switzerland
| | - Miriam Weisskopf
- University of Zurich, Zurich, Switzerland.,Center of Surgical Research, University Hospital Zurich, Zurich, Switzerland
| | - Ladina Vonzun
- Department of Obstetrics, University Hospital Zurich, Zurich, Switzerland.,University of Zurich, Zurich, Switzerland.,The Zurich Center for Fetal Diagnosis and Therapy, Zurich, Switzerland
| | - Roland Zimmermann
- Department of Obstetrics, University Hospital Zurich, Zurich, Switzerland.,University of Zurich, Zurich, Switzerland.,The Zurich Center for Fetal Diagnosis and Therapy, Zurich, Switzerland
| | - Martin Ehrbar
- Department of Obstetrics, University Hospital Zurich, Zurich, Switzerland.,University of Zurich, Zurich, Switzerland.,The Zurich Center for Fetal Diagnosis and Therapy, Zurich, Switzerland
| | - Nicole Ochsenbein-Kölble
- Department of Obstetrics, University Hospital Zurich, Zurich, Switzerland.,University of Zurich, Zurich, Switzerland.,The Zurich Center for Fetal Diagnosis and Therapy, Zurich, Switzerland
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Abstract
The field of fetal medicine has evolved significantly over the past several decades. Our ability to identify and treat the unborn patient has been shaped by advancements in imaging technology, genetic diagnosis, an improved understanding of fetal physiology, and the development and optimization of in utero surgical techniques. The future of the field will be shaped by medical innovators pushing for the continued refinement of minimally invasive surgical technique, the application of pioneering technologies such as robotic surgery and in utero stem cell and gene therapies, and the development of innovative ex utero fetal support systems.
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Affiliation(s)
- Eric Bergh
- Department of Obstetrics and Gynecology, The Fetal Center at Children's Memorial Hermann Hospital, University of Texas Health Science Center, McGovern Medical School, 6410 Fannin Street, Suite 700, Houston, TX 77030, USA.
| | - Cara Buskmiller
- Maternal Fetal Medicine, Department of Obstetrics and Gynecology, University of Texas Health Science Center, McGovern Medical School, 6410 Fannin Street, Suite 700, Houston, TX 77030, USA. https://twitter.com/CaraBuskmiller
| | - Anthony Johnson
- Department of Obstetrics and Gynecology, The Fetal Center at Children's Memorial Hermann Hospital, University of Texas Health Science Center, McGovern Medical School, 6410 Fannin Street, Suite 700, Houston, TX 77030, USA
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Jung YM, Park CW, Park JS, Jun JK, Lee SM. Application of Tissue Engineering and Regenerative Medicine in Prelabor Rupture of Membranes: a Review of the Current Evidence. Reprod Sci 2021; 28:1774-1784. [PMID: 33847975 DOI: 10.1007/s43032-021-00525-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Accepted: 03/01/2021] [Indexed: 10/21/2022]
Abstract
Preterm prelabor rupture of membranes (PPROM) is the main cause of preterm delivery, resulting in increased perinatal morbidity and mortality. Several techniques have been studied for the healing of ruptured membranes, with some success. Before new techniques using tissue/organ engineering are applied in clinical practice, these techniques must be validated in clinical trials. To address this issue, the objective of this study was to summarize the current literature on interventions to seal or heal the amniotic membranes after PPROM. An electronic search was conducted using the keywords "fetal membranes," "premature rupture," "amnion," "tissue engineering," "fibrin tissue adhesive," "regenerative medicine," "tissue adhesive," "wound healing," and "fetoscopy" through the MEDLINE, Embase, and Cochrane CENTRAL databases, with the limitation of English-language studies. Through a review of the identified studies, it was found that spontaneous healing of the fetal membrane has not been successful. Several efforts have been made to seal membranes before or after rupture using different methods, including amniopatches, collagen, tissue patches, fibrin sealant, mussel-mimetic sealant, engineered cell matrix, and immunological supplements. However, most studies have been conducted in ex vivo or in vivo settings, so the safety and applicability of these techniques to spontaneous rupture of membranes in clinical settings have not been sufficiently tested. Overall, the current evidence is limited regarding the safety and effectiveness of interventions against PPROM.
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Affiliation(s)
- Young Mi Jung
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 03080, Korea
| | - Chan-Wook Park
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 03080, Korea
| | - Joong Shin Park
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 03080, Korea
| | - Jong Kwan Jun
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 03080, Korea
| | - Seung Mi Lee
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 03080, Korea.
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10
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Zhang T, Zhang Y, Yang J, Wen P, Li H, Wei N, Gao Y, Li B, Huo Y. Dynamic measurement of amnion thickness during loading by speckle pattern interferometry. Placenta 2021; 104:284-294. [PMID: 33486132 DOI: 10.1016/j.placenta.2021.01.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 11/27/2020] [Accepted: 01/04/2021] [Indexed: 11/16/2022]
Abstract
INTRODUCTION In previous studies on the mechanical parameters of amnions (AM), there is a limitation due to the lack of an accurate thickness measurement, which is an important parameter for determining AM-specific mechanical properties. As a bottleneck, the characterization of the basic mechanical properties of AM are greatly restricted, even with the proposal of fracture criteria. METHOD First, the initial thickness of the AM is estimated by the interpolated-volume-area method. Second, through combinations of our self-developed mini-biaxial tensile device with speckle pattern interferometry, this is the first time that researchers can accurately obtain the AM thickness at each transient moment in the process of loading. RESULTS Based on the experimental results, an accurate stress-strain curve could be obtained. Two important mechanical parameters-the fracture energy density and amnion rupture modulus-could be extracted as 0.184±0.036MPa and 108.57±17.32MPa, respectively. The fracture energy density and amnion rupture modulus provide objective criteria and a scientific basis for the evaluation of AM rupture. DISCUSSION The tensile stress-strain curve of a normal human amnion shows a distinct J-shape. This proves that the experimental results are basically reliable. Both important parameters --the fracture energy density and amnion rupture modulus, can be calculated from the stress-strain curve. Extracting these two parameters is critical for the evaluation and prediction of ROM, PROM and PPROM.
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Affiliation(s)
- Tong Zhang
- Institute of Solid Mechanics, School of Aeronautics Sciences and Engineering, Beihang University, Beijing, 100083, China.
| | - Yan Zhang
- Obstetrics and Gynecology Department, Peking University Third Hospital, Beijing, 100191, China.
| | - Jianhong Yang
- School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China; Institute of Artificial Intelligence, University of Science and Technology Beijing, Beijing 100083, China.
| | - Pinjing Wen
- Institute of Semiconductor Manufacturing Research, Shenzhen University, Shenzhen, 518060, Guangdong, China; College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, Guangdong, China.
| | - Han Li
- Institute of Solid Mechanics, School of Aeronautics Sciences and Engineering, Beihang University, Beijing, 100083, China
| | - Ning Wei
- School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Yufei Gao
- Obstetrics and Gynecology Department, Peking University Third Hospital, Beijing, 100191, China
| | - Boqian Li
- Institute of Solid Mechanics, School of Aeronautics Sciences and Engineering, Beihang University, Beijing, 100083, China
| | - Yucheng Huo
- Institute of Solid Mechanics, School of Aeronautics Sciences and Engineering, Beihang University, Beijing, 100083, China
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Gowda AH, Bu Y, Kudina O, Krishna KV, Bohara RA, Eglin D, Pandit A. Design of tunable gelatin-dopamine based bioadhesives. Int J Biol Macromol 2020; 164:1384-1391. [DOI: 10.1016/j.ijbiomac.2020.07.195] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 07/16/2020] [Accepted: 07/17/2020] [Indexed: 11/28/2022]
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12
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Osteoconductive hybrid hyaluronic acid hydrogel patch for effective bone formation. J Control Release 2020; 327:571-583. [DOI: 10.1016/j.jconrel.2020.09.006] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 09/01/2020] [Accepted: 09/03/2020] [Indexed: 12/18/2022]
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Micheletti T, Eixarch E, Berdun S, Febas G, Mazza E, Borrós S, Gratacos E. Ex-vivo mechanical sealing properties and toxicity of a bioadhesive patch as sealing system for fetal membrane iatrogenic defects. Sci Rep 2020; 10:18608. [PMID: 33122661 PMCID: PMC7596722 DOI: 10.1038/s41598-020-75242-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 09/28/2020] [Indexed: 12/25/2022] Open
Abstract
Preterm prelabor rupture of membranes (PPROM) is the most frequent complication of fetal surgery. Strategies to seal the membrane defect created by fetoscopy aiming to reduce the occurrence of PPROM have been attempted with little success. The objective of this study was to evaluate the ex-vivo mechanical sealing properties and toxicity of four different bioadhesives integrated in semi-rigid patches for fetal membranes. We performed and ex-vivo study using term human fetal membranes to compare the four integrated patches composed of silicone or silicone-polyurethane combined with dopaminated-hyaluronic acid or hydroxypropyl methylcellulose (HPMC). For mechanical sealing properties, membranes were mounted in a multiaxial inflation device with saline, perforated and sealed with the 4 combinations. We measured bursting pressure and maximum pressure free of leakage (n = 8). For toxicity, an organ culture of membranes sealed with the patches was used to measure pyknotic index (PI) and lactate dehydrogenase (LDH) concentration (n = 5). All bioadhesives achieved appropriate bursting pressures, but only HPMC forms achieved high maximum pressures free of leakage. Concerning toxicity, bioadhesives showed low PI and LDH levels, suggesting no cell toxicity. We conclude that a semi-rigid patch coated with HPMC achieved ex-vivo sealing of iatrogenic defects in fetal membranes with no signs of cell toxicity. These results warrant further research addressing long-term adhesiveness and feasibility as a sealing system for fetoscopy.
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Affiliation(s)
- Talita Micheletti
- BCNatal
- Fetal Medicine Research Center (Hospital Clínic and Hospital Sant Joan de Déu), University of Barcelona, Building Helios 2, Sabino Arana Street, 1, 08028, Barcelona, Spain.,Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Elisenda Eixarch
- BCNatal
- Fetal Medicine Research Center (Hospital Clínic and Hospital Sant Joan de Déu), University of Barcelona, Building Helios 2, Sabino Arana Street, 1, 08028, Barcelona, Spain. .,Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain. .,Centre for Biomedical Research on Rare Diseases (CIBER-ER), Madrid, Spain.
| | - Sergio Berdun
- BCNatal
- Fetal Medicine Research Center (Hospital Clínic and Hospital Sant Joan de Déu), University of Barcelona, Building Helios 2, Sabino Arana Street, 1, 08028, Barcelona, Spain
| | - Germán Febas
- Grup d'Enginyeria de Materials (GEMAT), Institut Químic de Sarrià, Universitat Ramon Llull, Barcelona, Spain
| | - Edoardo Mazza
- Swiss Federal Institute of Technology, Zurich, Switzerland.,Empa, Materials Science and Technology, Dübendorf, Switzerland
| | - Salvador Borrós
- Grup d'Enginyeria de Materials (GEMAT), Institut Químic de Sarrià, Universitat Ramon Llull, Barcelona, Spain
| | - Eduard Gratacos
- BCNatal
- Fetal Medicine Research Center (Hospital Clínic and Hospital Sant Joan de Déu), University of Barcelona, Building Helios 2, Sabino Arana Street, 1, 08028, Barcelona, Spain.,Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,Centre for Biomedical Research on Rare Diseases (CIBER-ER), Madrid, Spain.,Institut de Recerca Sant Joan de Déu, Esplugues de Llobregat, Spain
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Balkenende DWR, Winkler SM, Li Y, Messersmith PB. Supramolecular Cross-Links in Mussel-Inspired Tissue Adhesives. ACS Macro Lett 2020; 9:1439-1445. [PMID: 35653660 DOI: 10.1021/acsmacrolett.0c00520] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Here we introduce a tissue-adhesive patch with orthogonal cohesive and adhesive chemistries; supramolecular ureido-4-pyrimidinone (UPy) cross-links provide cohesive strength, and catechols provide mussel-inspired tissue adhesion. In the development of tissue-adhesive biomaterials, prior research has focused on forming strong adhesive interfaces in wet conditions, leaving the use of supramolecular cross-links for cohesive strength underexplored. In developing this adhesive patch, the influence of the comonomers' composition and amphiphilicity on adhesion was investigated by lap shear adhesion to wet tissue. We determined failed lap joints' failure mechanism using catechol-specific Arnow's stain and identified formulations with improved cohesive strength. The adhesive materials were cytocompatible in mammalian cell conditioned media viability studies. We found that using orthogonal motifs to independently control adhesives' cohesive and adhesive strengths resulted in stronger tissue adhesion. The design principles presented here advance the development of wet tissue adhesives and could allow for the future design of biomaterials with desirable stimuli-responsive properties.
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Affiliation(s)
- Diederik W. R. Balkenende
- Departments of Bioengineering and Materials Science and Engineering, University of California Berkeley, Berkeley, California 94720-1760, United States
| | - Sally M. Winkler
- Departments of Bioengineering and Materials Science and Engineering, University of California Berkeley, Berkeley, California 94720-1760, United States
- UCSF Graduate Program in Bioengineering, University of California Berkeley, Berkeley, California 94720, United States
| | - Yiran Li
- Departments of Bioengineering and Materials Science and Engineering, University of California Berkeley, Berkeley, California 94720-1760, United States
| | - Phillip B. Messersmith
- Departments of Bioengineering and Materials Science and Engineering, University of California Berkeley, Berkeley, California 94720-1760, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
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Barrett DW, Okesola BO, Costa E, Thrasivoulou C, Becker DL, Mata A, Deprest JA, David AL, Chowdhury TT. Potential sealing and repair of human FM defects after trauma with peptide amphiphiles and Cx43 antisense. Prenat Diagn 2020; 41:89-99. [PMID: 33045764 DOI: 10.1002/pd.5826] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 08/01/2020] [Accepted: 09/04/2020] [Indexed: 12/23/2022]
Abstract
OBJECTIVE We examined whether peptide amphiphiles functionalised with adhesive, migratory or regenerative sequences could be combined with amniotic fluid (AF) to form plugs that repair fetal membrane (FM) defects after trauma and co-culture with connexin 43 (Cx43) antisense. METHODS We assessed interactions between peptide amphiphiles and AF and examined the plugs in FM defects after trauma and co-culture with the Cx43antisense. RESULTS Confocal microscopy confirmed directed self-assembly of peptide amphiphiles with AF to form a plug within minutes, with good mechanical properties. SEM of the plug revealed a multi-layered, nanofibrous network that sealed the FM defect after trauma. Co-culture of the FM defect with Cx43 antisense and plug increased collagen levels but reduced GAG. Culture of the FM defect with peptide amphiphiles incorporating regenerative sequences for 5 days, increased F-actin and nuclear cell contraction, migration and polarization of collagen fibers across the FM defect when compared to control specimens with minimal repair. CONCLUSIONS Whilst the nanoarchitecture revealed promising conditions to seal iatrogenic FM defects, the peptide amphiphiles need to be designed to maximize repair mechanisms and promote structural compliance with high mechanical tolerance that maintains tissue remodeling with Cx43 antisense for future treatment.
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Affiliation(s)
- David W Barrett
- Institute of Bioengineering, School of Engineering and Materials Science, Queen Mary University of London, London, UK
| | - Babatunde O Okesola
- Institute of Bioengineering, School of Engineering and Materials Science, Queen Mary University of London, London, UK
| | - Eleni Costa
- Institute of Bioengineering, School of Engineering and Materials Science, Queen Mary University of London, London, UK
| | | | - David L Becker
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore
| | - Alvaro Mata
- Institute of Bioengineering, School of Engineering and Materials Science, Queen Mary University of London, London, UK.,Biodiscovery Institute, School of Pharmacy, Department of Chemical and Environmental Engineering, University of Nottingham, Nottingham, UK
| | - Jan A Deprest
- Department of Obstetrics and Gynecology, University Hospitals Leuven, Leuven, Belgium.,Institute for Women's Health, University College London, London, UK
| | - Anna L David
- Department of Obstetrics and Gynecology, University Hospitals Leuven, Leuven, Belgium.,Institute for Women's Health, University College London, London, UK.,NIHR University College London Hospitals Biomedical Research Centre, London, UK
| | - Tina T Chowdhury
- Institute of Bioengineering, School of Engineering and Materials Science, Queen Mary University of London, London, UK
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16
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Spontaneous healing of human amnion in the premature rupture of membrane model. Placenta 2020; 97:29-35. [PMID: 32792059 DOI: 10.1016/j.placenta.2020.06.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 06/08/2020] [Accepted: 06/15/2020] [Indexed: 12/13/2022]
Abstract
INTRODUCTION This study aimed to explore the spontaneous healing of ruptured fetal membranes experimentally in the prelabor rupture of membrane model using the amnion pore culture technique. METHODS The human amniotic membrane was separated from the post-delivery term placenta in women with normal pregnancies who delivered by scheduled unlabored cesarean section and stained immunohistochemically with primary antibodies against SSEA-4, OCT-3/4, and TRA-1-60. The characteristics of the cultured amniotic epithelial cells were examined by fluorescence-activated cell sorting analysis. Amniotic membranes with perforations that were 1, 2, and 3 mm in diameter were cultured in αMEM containing 10% heat-inactivated FBS, 1% penicillin-streptomycin, and 10 ng/mL EGF at 37 °C in a humidified incubator with 5% CO2. Next, the pore sizes were calculated to evaluate the healing process. RESULTS The amniotic membrane stained positive for CD49d and pluripotent stem cell markers such as SSEA-4, TRA 1-60, and OCT-4 in the stromal and epithelial cell layers. In the flow cytometry analyses, the extracted amniotic epithelial stem cells were observed to express indicator markers for stem cells such as SSEA-4, OCT-4, SOX-2, and Nanog. In the amnion pore culture technique model, the 1-mm pores healed completely, whereas the 2- and 3-mm pores did not heal substantially. DISCUSSION The amnion pore culture technique was useful for demonstrating the natural healing process of the human amniotic membrane. Stem cells in the human amnion might facilitate the resealing of small pores in the amniotic membrane, as observed in this model.
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17
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Compartmentalized processing of catechols during mussel byssus fabrication determines the destiny of DOPA. Proc Natl Acad Sci U S A 2020; 117:7613-7621. [PMID: 32209666 DOI: 10.1073/pnas.1919712117] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Inspired largely by the role of the posttranslationally modified amino acid dopa (DOPA) in mussel adhesion, catechol functional groups have become commonplace in medical adhesives, tissue scaffolds, and advanced smart polymers. Yet, the complex redox chemistry of catechol groups complicates cross-link regulation, hampering fabrication and the long-term stability/performance of mussel-inspired polymers. Here, we investigated the various fates of DOPA residues in proteins comprising mussel byssus fibers before, during, and after protein secretion. Utilizing a combination of histological staining and confocal Raman spectroscopy on native tissues, as well as peptide-based cross-linking studies, we have identified at least two distinct DOPA-based cross-linking pathways during byssus fabrication, achieved by oxidative covalent cross-linking or formation of metal coordination interactions under reducing conditions, respectively. We suggest that these end states are spatiotemporally regulated by the microenvironments in which the proteins are stored prior to secretion, which are retained after formation-in particular, due to the presence of reducing moieties. These findings provide physicochemical pathways toward greater control over properties of synthetic catechol-based polymers and adhesives.
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18
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Bao Z, Gao M, Sun Y, Nian R, Xian M. The recent progress of tissue adhesives in design strategies, adhesive mechanism and applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 111:110796. [PMID: 32279807 DOI: 10.1016/j.msec.2020.110796] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 04/15/2019] [Accepted: 02/29/2020] [Indexed: 02/07/2023]
Abstract
Tissue adhesives have emerged as an effective method for wound closure and hemostasis in recent decades, due to their ability to bond tissues together, preventing separation from one tissue to another. However, existing tissue adhesives still have several limitations. Tremendous efforts have been invested into developing new tissue adhesives by improving upon existing adhesives through different strategies. Therefore, highlighting and analyzing these design strategies are essential for developing the next generation of advanced adhesives. To this end, we reviewed the available strategies for modifying traditional adhesives (including cyanoacrylate glues, fibrin sealants and BioGlue), as well as design of emerging adhesives (including gelatin sealants, methacrylated sealants and bioinspired adhesives), focusing on their structures, adhesive mechanisms, advantages, limitations, and current applications. The bioinspired adhesives have numerous advantages over traditional adhesives, which will be a wise direction for achieving tissue adhesives with superior properties.
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Affiliation(s)
- Zixian Bao
- CAS Key Laboratory of Biobased Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, No. 189 Songling Road, Qingdao 266101, China
| | - Minghong Gao
- CAS Key Laboratory of Biobased Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, No. 189 Songling Road, Qingdao 266101, China
| | - Yue Sun
- CAS Key Laboratory of Biobased Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, No. 189 Songling Road, Qingdao 266101, China
| | - Rui Nian
- CAS Key Laboratory of Biobased Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, No. 189 Songling Road, Qingdao 266101, China.
| | - Mo Xian
- CAS Key Laboratory of Biobased Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, No. 189 Songling Road, Qingdao 266101, China.
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19
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Zhang W, Wang R, Sun Z, Zhu X, Zhao Q, Zhang T, Cholewinski A, Yang FK, Zhao B, Pinnaratip R, Forooshani PK, Lee BP. Catechol-functionalized hydrogels: biomimetic design, adhesion mechanism, and biomedical applications. Chem Soc Rev 2020; 49:433-464. [PMID: 31939475 PMCID: PMC7208057 DOI: 10.1039/c9cs00285e] [Citation(s) in RCA: 380] [Impact Index Per Article: 95.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Hydrogels are a unique class of polymeric materials that possess an interconnected porous network across various length scales from nano- to macroscopic dimensions and exhibit remarkable structure-derived properties, including high surface area, an accommodating matrix, inherent flexibility, controllable mechanical strength, and excellent biocompatibility. Strong and robust adhesion between hydrogels and substrates is highly desirable for their integration into and subsequent performance in biomedical devices and systems. However, the adhesive behavior of hydrogels is severely weakened by the large amount of water that interacts with the adhesive groups reducing the interfacial interactions. The challenges of developing tough hydrogel-solid interfaces and robust bonding in wet conditions are analogous to the adhesion problems solved by marine organisms. Inspired by mussel adhesion, a variety of catechol-functionalized adhesive hydrogels have been developed, opening a door for the design of multi-functional platforms. This review is structured to give a comprehensive overview of adhesive hydrogels starting with the fundamental challenges of underwater adhesion, followed by synthetic approaches and fabrication techniques, as well as characterization methods, and finally their practical applications in tissue repair and regeneration, antifouling and antimicrobial applications, drug delivery, and cell encapsulation and delivery. Insights on these topics will provide rational guidelines for using nature's blueprints to develop hydrogel materials with advanced functionalities and uncompromised adhesive properties.
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Affiliation(s)
- Wei Zhang
- Jiangsu Key Laboratory of Advanced Metallic Materials, School of Materials Science and Engineering, Southeast University, Nanjing, 211189, China.
| | - Ruixing Wang
- Jiangsu Key Laboratory of Advanced Metallic Materials, School of Materials Science and Engineering, Southeast University, Nanjing, 211189, China.
| | - ZhengMing Sun
- Jiangsu Key Laboratory of Advanced Metallic Materials, School of Materials Science and Engineering, Southeast University, Nanjing, 211189, China.
| | - Xiangwei Zhu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Qiang Zhao
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Tengfei Zhang
- Jiangsu Key Laboratory of Electrochemical Energy-Storage Technologies, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
| | - Aleksander Cholewinski
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, Centre for Bioengineering and Biotechnology, University of Waterloo, Ontario N2L 3G1, Canada.
| | - Fut Kuo Yang
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, Centre for Bioengineering and Biotechnology, University of Waterloo, Ontario N2L 3G1, Canada.
| | - Boxin Zhao
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, Centre for Bioengineering and Biotechnology, University of Waterloo, Ontario N2L 3G1, Canada.
| | - Rattapol Pinnaratip
- Department of Biomedical Engineering, Michigan Technological University, Houghton, Michigan 49931, USA.
| | - Pegah Kord Forooshani
- Department of Biomedical Engineering, Michigan Technological University, Houghton, Michigan 49931, USA.
| | - Bruce P Lee
- Department of Biomedical Engineering, Michigan Technological University, Houghton, Michigan 49931, USA.
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20
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Abstract
Fetal surgery and fetal therapy involve surgical interventions on the fetus in utero to correct or ameliorate congenital abnormalities and give a developing fetus the best chance at a healthy life. Historical use of biomaterials in fetal surgery has been limited, and most biomaterials used in fetal surgeries today were originally developed for adult or pediatric patients. However, as the field of fetal surgery moves from open surgeries to minimally invasive procedures, many opportunities exist for innovative biomaterials engineers to create materials designed specifically for the unique challenges and opportunities of maternal-fetal surgery. Here, we review biomaterials currently used in clinical fetal surgery as well as promising biomaterials in development for eventual clinical translation. We also highlight unmet challenges in fetal surgery that could particularly benefit from novel biomaterials, including fetal membrane sealing and minimally invasive myelomeningocele defect repair. Finally, we conclude with a discussion of the underdeveloped fetal immune system and opportunities for exploitation with novel immunomodulating biomaterials.
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Affiliation(s)
- Sally M Winkler
- Department of Bioengineering, University of California, Berkeley, CA, USA. and University of California, Berkeley-University of California, San Francisco Graduate Program in Bioengineering, Berkeley, CA, USA
| | - Michael R Harrison
- Division of Pediatric Surgery, UCSF Benioff Children's Hospital, San Francisco, CA, USA
| | - Phillip B Messersmith
- Department of Bioengineering, University of California, Berkeley, CA, USA. and Department of Materials Science and Engineering, University of California, Berkeley, CA, USA and Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
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21
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Abstract
Medical adhesives that are strong, easy to apply and biocompatible are promising alternatives to sutures and staples in a large variety of surgical and clinical procedures. Despite progress in the development and regulatory approval of adhesives for use in the clinic, adhesion to wet tissue remains challenging. Marine organisms have evolved a diverse set of highly effective wet adhesive approaches that have inspired the design of new medical adhesives. Here we provide an overview of selected marine animals and their chemical and physical adhesion strategies, the state of clinical translation of adhesives inspired by these organisms, and target applications where marine-inspired adhesives can have a significant impact. We will focus on medical adhesive polymers inspired by mussels, sandcastle worms, and cephalopods, emphasize the history of bioinspired medical adhesives from the peer reviewed and patent literature, and explore future directions including overlooked sources of bioinspiration and materials that exploit multiple bioinspired strategies.
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Affiliation(s)
- Diederik W. R. Balkenende
- Departments of Bioengineering and Materials Science and Engineering, University of California Berkeley, Berkeley, CA 94720-1760, USA
| | - Sally M. Winkler
- Departments of Bioengineering and Materials Science and Engineering, University of California Berkeley, Berkeley, CA 94720-1760, USA
- University of California, Berkeley–University of California, San Francisco Graduate Program in Bioengineering, Berkeley, CA, USA
| | - Phillip B. Messersmith
- Departments of Bioengineering and Materials Science and Engineering, University of California Berkeley, Berkeley, CA 94720-1760, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, United States
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22
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Shi L, Ding P, Wang Y, Zhang Y, Ossipov D, Hilborn J. Self-Healing Polymeric Hydrogel Formed by Metal-Ligand Coordination Assembly: Design, Fabrication, and Biomedical Applications. Macromol Rapid Commun 2019; 40:e1800837. [PMID: 30672628 DOI: 10.1002/marc.201800837] [Citation(s) in RCA: 139] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Revised: 01/04/2019] [Indexed: 01/28/2023]
Abstract
Self-healing hydrogels based on metal-ligand coordination chemistry provide new and exciting properties that improve injectability, rheological behaviors, and even biological functionalities. The inherent reversibility of coordination bonds improves on the covalent cross-linking employed previously, allowing for the preparation of completely self-healing hydrogels. In this article, recent advances in the development of this class of hydrogels are summarized and their applications in biology and medicine are discussed. Various chelating ligands such as bisphosphonate, catechol, histidine, thiolate, carboxylate, pyridines (including bipyridine and terpyridine), and iminodiacetate conjugated onto polymeric backbones, as well as the chelated metal ions and metal ions containing inorganic particles, which are used to form dynamic networks, are highlighted. This article provides general ideas and methods for the design of self-healing hydrogel biomaterials based on coordination chemistry.
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Affiliation(s)
- Liyang Shi
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, Hunan University, Changsha, 410082, China.,Division of Polymer Chemistry, Department of Chemistry-Ångström, Uppsala University, Uppsala, 75121, Sweden
| | - Pinghui Ding
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, Hunan University, Changsha, 410082, China
| | - Yuzhi Wang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China
| | - Yu Zhang
- College of Chemistry and Materials Science, Northwest University, Xi'an, Shaanxi, 710069, China
| | - Dmitri Ossipov
- Department of Biosciences and Nutrition, Karolinska Institute, Häsovägen 7c,, Huddinge, 14157, Sweden
| | - Jöns Hilborn
- Division of Polymer Chemistry, Department of Chemistry-Ångström, Uppsala University, Uppsala, 75121, Sweden
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23
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Sun H, Yang X, Zhang Y, Cheng X, Xu Y, Bai Y, Shao L. Segregation-induced in situ hydrophilic modification of poly (vinylidene fluoride) ultrafiltration membranes via sticky poly (ethylene glycol) blending. J Memb Sci 2018. [DOI: 10.1016/j.memsci.2018.05.046] [Citation(s) in RCA: 135] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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24
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Pandey N, Hakamivala A, Xu C, Hariharan P, Radionov B, Huang Z, Liao J, Tang L, Zimmern P, Nguyen KT, Hong Y. Biodegradable Nanoparticles Enhanced Adhesiveness of Mussel-Like Hydrogels at Tissue Interface. Adv Healthc Mater 2018; 7:e1701069. [PMID: 29205950 DOI: 10.1002/adhm.201701069] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Indexed: 12/29/2022]
Abstract
Popular bioadhesives, such as fibrin, cyanoacrylate, and albumin-glutaraldehyde based materials, have been applied for clinical applications in wound healing, drug delivery, and bone and soft tissue engineering; however, their performances are limited by weak adhesion strength and rapid degradation. In this study a mussel-inspired, nanocomposite-based, biodegradable tissue adhesive is developed by blending poly(lactic-co-glycolic acid) (PLGA) or N-hydroxysuccinimide modified PLGA nanoparticles (PLGA-NHS) with mussel-inspired alginate-dopamine polymer (Alg-Dopa). Adhesive strength measurement of the nanocomposites on porcine skin-muscle constructs reveals that the incorporation of nanoparticles in Alg-Dopa significantly enhances the tissue adhesive strength compared to the mussel-inspired adhesive alone. The nanocomposite formed by PLGA-NHS nanoparticles shows higher lap shear strength of 33 ± 3 kPa, compared to that of Alg-Dopa hydrogel alone (14 ± 2 kPa). In addition, these nanocomposites are degradable and cytocompatible in vitro, and elicit in vivo minimal inflammatory responses in a rat model, suggesting clinical potential of these nanocomposites as bioadhesives.
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Affiliation(s)
- Nikhil Pandey
- Department of Bioengineering University of Texas at Arlington Arlington TX 76010 USA
- Joint Biomedical Engineering Program University of Texas Southwestern Medical Center Dallas TX 75390 USA
| | - Amirhossein Hakamivala
- Department of Bioengineering University of Texas at Arlington Arlington TX 76010 USA
- Joint Biomedical Engineering Program University of Texas Southwestern Medical Center Dallas TX 75390 USA
| | - Cancan Xu
- Department of Bioengineering University of Texas at Arlington Arlington TX 76010 USA
- Joint Biomedical Engineering Program University of Texas Southwestern Medical Center Dallas TX 75390 USA
| | - Prashant Hariharan
- Department of Bioengineering University of Texas at Arlington Arlington TX 76010 USA
- Joint Biomedical Engineering Program University of Texas Southwestern Medical Center Dallas TX 75390 USA
| | - Boris Radionov
- Department of Bioengineering University of Texas at Arlington Arlington TX 76010 USA
- Joint Biomedical Engineering Program University of Texas Southwestern Medical Center Dallas TX 75390 USA
| | - Zhong Huang
- Department of Bioengineering University of Texas at Arlington Arlington TX 76010 USA
| | - Jun Liao
- Department of Bioengineering University of Texas at Arlington Arlington TX 76010 USA
- Joint Biomedical Engineering Program University of Texas Southwestern Medical Center Dallas TX 75390 USA
| | - Liping Tang
- Department of Bioengineering University of Texas at Arlington Arlington TX 76010 USA
- Joint Biomedical Engineering Program University of Texas Southwestern Medical Center Dallas TX 75390 USA
| | - Philippe Zimmern
- Department of Urology University of Texas Southwestern Medical Center Dallas TX 75390 USA
| | - Kytai T. Nguyen
- Department of Bioengineering University of Texas at Arlington Arlington TX 76010 USA
- Joint Biomedical Engineering Program University of Texas Southwestern Medical Center Dallas TX 75390 USA
| | - Yi Hong
- Department of Bioengineering University of Texas at Arlington Arlington TX 76010 USA
- Joint Biomedical Engineering Program University of Texas Southwestern Medical Center Dallas TX 75390 USA
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25
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Sung JH, Kuk JY, Cha HH, Choi SJ, Oh SY, Roh CR, Kim JH. Amniopatch treatment for preterm premature rupture of membranes before 23 weeks' gestation and factors associated with its success. Taiwan J Obstet Gynecol 2017; 56:599-605. [DOI: 10.1016/j.tjog.2017.08.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/12/2017] [Indexed: 11/26/2022] Open
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26
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Bhagat V, Becker ML. Degradable Adhesives for Surgery and Tissue Engineering. Biomacromolecules 2017; 18:3009-3039. [DOI: 10.1021/acs.biomac.7b00969] [Citation(s) in RCA: 194] [Impact Index Per Article: 27.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Vrushali Bhagat
- Department
of Polymer Science and ‡Department of Biomedical Engineering, The University of Akron, Akron, Ohio 44325, United States
| | - Matthew L. Becker
- Department
of Polymer Science and ‡Department of Biomedical Engineering, The University of Akron, Akron, Ohio 44325, United States
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27
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Barrett DW, Kethees A, Thrasivoulou C, Mata A, Virasami A, Sebire NJ, Engels AC, Deprest JA, Becker DL, David AL, Chowdhury TT. Trauma induces overexpression of Cx43 in human fetal membrane defects. Prenat Diagn 2017; 37:899-906. [PMID: 28664994 PMCID: PMC5638101 DOI: 10.1002/pd.5104] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2017] [Revised: 06/22/2017] [Accepted: 06/26/2017] [Indexed: 11/11/2022]
Abstract
Objective We developed an in vitro model to examine whether trauma induces connexin 43 (Cx43) expression and collagen organisation in the amniotic membrane (AM) of fetal membrane (FM) defects. Method Term human FM was traumatised in vitro. Cell morphology and Cx43 were examined in the wound edge AM by immunofluorescence (IMF) confocal microscopy and compared to control AM. Collagen microstructure was examined by second harmonic generation (SHG) imaging. Cell viability was assessed with calcein and ethidium staining. Results After trauma, the AM showed a dense region of cells, which had migrated towards the wound edge. In wound edge AM, Cx43 puncta was preferentially distributed in mesenchymal cells compared to epithelial cells with significant expression in the fibroblast layer than epithelial layer (p < 0.001). In the fibroblast layer, the collagen fibres were highly polarised and aligned in parallel to the axis of the wound edge AM. There was an absence of cell migration across the defect with no healing after 168 h. Cell viability of the FM after trauma was maintained during culture. Conclusion Cx43 overexpression in wounded AM drives structural changes in collagen that slows down efficacy of cell migration across the FM defect. © 2017 The Authors. Prenatal Diagnosis published by John Wiley & Sons, Ltd. What's already known about this topic?
After fetal surgery, the human fetal membrane shows limited healing and overexpression of Cx43 at the wound edge. Cx43 knockdown leads to accelerated wound healing by influencing cell migration and tissue dynamics.
What does this study add?
We developed an artificial fetal membrane model to examine Cx43 expression after trauma and changes in collagen dynamics. We observed Cx43 overexpression and polarised collagen at the wound edge. These changes were found to be similar to human fetoscopic wounds after fetal surgery.
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Affiliation(s)
- David W Barrett
- Institute of Bioengineering, School of Engineering and Materials Science, Queen Mary University of London, London, UK
| | - Aumie Kethees
- Institute of Bioengineering, School of Engineering and Materials Science, Queen Mary University of London, London, UK
| | | | - Alvaro Mata
- Institute of Bioengineering, School of Engineering and Materials Science, Queen Mary University of London, London, UK
| | - Alex Virasami
- Histopathology Department, Camelia Botnar Laboratories, Great Ormond Street Hospital for Children NHS Trust, London, UK
| | - Neil J Sebire
- Histopathology Department, Camelia Botnar Laboratories, Great Ormond Street Hospital for Children NHS Trust, London, UK
| | - Alex C Engels
- Department of Obstetrics and Gynaecology, University Hospitals Leuven, Leuven, Belgium
| | - Jan A Deprest
- Department of Obstetrics and Gynaecology, University Hospitals Leuven, Leuven, Belgium
| | - David L Becker
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore
| | - Anna L David
- Institute for Women's Health, University College London, London, UK
| | - Tina T Chowdhury
- Institute of Bioengineering, School of Engineering and Materials Science, Queen Mary University of London, London, UK
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28
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Marcisz K, Romanski J, Stojek Z, Karbarz M. Environmentally sensitive hydrogel functionalized with electroactive and complexing-iron(III) catechol groups. ACTA ACUST UNITED AC 2017. [DOI: 10.1002/pola.28697] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Kamil Marcisz
- Faculty of Chemistry; University of Warsaw; Warsaw 02-093 Poland
| | - Jan Romanski
- Faculty of Chemistry; University of Warsaw; Warsaw 02-093 Poland
| | - Zbigniew Stojek
- Faculty of Chemistry; University of Warsaw; Warsaw 02-093 Poland
| | - Marcin Karbarz
- Faculty of Chemistry; University of Warsaw; Warsaw 02-093 Poland
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29
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Liu Y, Meng H, Qian Z, Fan N, Choi W, Zhao F, Lee BP. A Moldable Nanocomposite Hydrogel Composed of a Mussel-Inspired Polymer and a Nanosilicate as a Fit-to-Shape Tissue Sealant. Angew Chem Int Ed Engl 2017; 56:4224-4228. [PMID: 28296024 PMCID: PMC5497317 DOI: 10.1002/anie.201700628] [Citation(s) in RCA: 110] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Indexed: 01/14/2023]
Abstract
The engineering of bioadhesives to bind and conform to the complex contour of tissue surfaces remains a challenge. We have developed a novel moldable nanocomposite hydrogel by combining dopamine-modified poly(ethylene glycol) and the nanosilicate Laponite, without the use of cytotoxic oxidants. The hydrogel transitioned from a reversibly cross-linked network formed by dopamine-Laponite interfacial interactions to a covalently cross-linked network through the slow autoxidation and cross-linking of catechol moieties. Initially, the hydrogel could be remolded to different shapes, could recover from large strain deformation, and could be injected through a syringe to adhere to the convex contour of a tissue surface. With time, the hydrogel solidified to adopt the new shape and sealed defects on the tissue. This fit-to-shape sealant has potential in sealing tissues with non-flat geometries, such as a sutured anastomosis.
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Affiliation(s)
- Yuan Liu
- Department of Biomedical Engineering, Michigan Technological University, 1400 Townsend Drive, Houghton, MI, 49931, USA
| | - Hao Meng
- Department of Biomedical Engineering, Michigan Technological University, 1400 Townsend Drive, Houghton, MI, 49931, USA
| | - Zichen Qian
- Department of Biomedical Engineering, Michigan Technological University, 1400 Townsend Drive, Houghton, MI, 49931, USA
| | - Ni Fan
- Department of Chemistry, Michigan Technological University, 1400 Townsend Drive, Houghton, MI, 49931, USA
| | - Wonyoung Choi
- Department of Biomedical Engineering, Michigan Technological University, 1400 Townsend Drive, Houghton, MI, 49931, USA
| | - Feng Zhao
- Department of Biomedical Engineering, Michigan Technological University, 1400 Townsend Drive, Houghton, MI, 49931, USA
| | - Bruce P Lee
- Department of Biomedical Engineering, Michigan Technological University, 1400 Townsend Drive, Houghton, MI, 49931, USA
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Liu Y, Meng H, Qian Z, Fan N, Choi W, Zhao F, Lee BP. A Moldable Nanocomposite Hydrogel Composed of a Mussel-Inspired Polymer and a Nanosilicate as a Fit-to-Shape Tissue Sealant. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201700628] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Yuan Liu
- Department of Biomedical Engineering; Michigan Technological University; 1400 Townsend Drive Houghton MI 49931 USA
| | - Hao Meng
- Department of Biomedical Engineering; Michigan Technological University; 1400 Townsend Drive Houghton MI 49931 USA
| | - Zichen Qian
- Department of Biomedical Engineering; Michigan Technological University; 1400 Townsend Drive Houghton MI 49931 USA
| | - Ni Fan
- Department of Chemistry; Michigan Technological University; 1400 Townsend Drive Houghton MI 49931 USA
| | - Wonyoung Choi
- Department of Biomedical Engineering; Michigan Technological University; 1400 Townsend Drive Houghton MI 49931 USA
| | - Feng Zhao
- Department of Biomedical Engineering; Michigan Technological University; 1400 Townsend Drive Houghton MI 49931 USA
| | - Bruce P. Lee
- Department of Biomedical Engineering; Michigan Technological University; 1400 Townsend Drive Houghton MI 49931 USA
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Meng H, Liu Y, Lee BP. Model polymer system for investigating the generation of hydrogen peroxide and its biological responses during the crosslinking of mussel adhesive moiety. Acta Biomater 2017; 48:144-156. [PMID: 27744069 PMCID: PMC5235946 DOI: 10.1016/j.actbio.2016.10.016] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Revised: 09/25/2016] [Accepted: 10/11/2016] [Indexed: 12/21/2022]
Abstract
Mussel adhesive moiety, catechol, has been utilized to design a wide variety of biomaterials. However, the biocompatibility and biological responses associated with the byproducts generated during the curing process of catechol has never been characterized. An in situ curable polymer model system, 4-armed polyethylene glycol polymer end-capped with dopamine (PEG-D4), was used to characterize the production of hydrogen peroxide (H2O2) during the oxidative crosslinking of catechol. Although PEG-D4 cured rapidly (under 30s), catechol continues to polymerize over several hours to form a more densely crosslinked network over time. PEG-D4 hydrogels were examined at two different time points; 5min and 16h after initiation of crosslinking. Catechol in the 5min-cured PEG-D4 retained the ability to continue to crosslink and generated an order of magnitude higher H2O2 (40μM) over 6h when compared to 16h-cured samples that ceased to crosslink. H2O2 generated during catechol crosslinking exhibited localized cytotoxicity in culture and upregulated the expression of an antioxidant enzyme, peroxiredoxin 2, in primary dermal and tendon fibroblasts. Subcutaneous implantation study indicated that H2O2 released during oxidative crosslinking of PEG-D4 hydrogel promoted superoxide generation, macrophage recruitment, and M2 macrophage polarization in tissues surrounding the implant. Given the multitude of biological responses associated with H2O2, it is important to monitor and tailor the production of H2O2 generated from catechol-containing biomaterials for a given application. STATEMENT OF SIGNIFICANCE Remarkable underwater adhesion strategy employed by mussels has been utilized to design a wide variety of biomaterials ranging from tissue adhesives to drug carrier and tissue engineering scaffolds. Catechol is the main adhesive moiety that is widely incorporated to create an injectable biomaterials and bioadhesives. However, the biocompatibility and biological responses associated with the byproducts generated during the curing process of catechol has never been characterized. In this manuscript, we design a model system to systemically characterize the release of hydrogen peroxide (H2O2) during the crosslinking of catechol. Given the multitude of biological responses associated with H2O2 (i.e., wound healing, antimicrobial, chronic inflammation), its release from catechol-containing biomaterials need to be carefully monitored and controlled for a desired application.
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Affiliation(s)
- Hao Meng
- Department of Biomedical Engineering, Michigan Technological University, Houghton, MI 49931, USA
| | - Yuan Liu
- Department of Biomedical Engineering, Michigan Technological University, Houghton, MI 49931, USA
| | - Bruce P Lee
- Department of Biomedical Engineering, Michigan Technological University, Houghton, MI 49931, USA.
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Kord Forooshani P, Lee BP. Recent approaches in designing bioadhesive materials inspired by mussel adhesive protein. JOURNAL OF POLYMER SCIENCE. PART A, POLYMER CHEMISTRY 2017; 55:9-33. [PMID: 27917020 PMCID: PMC5132118 DOI: 10.1002/pola.28368] [Citation(s) in RCA: 349] [Impact Index Per Article: 49.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Accepted: 09/03/2016] [Indexed: 12/11/2022]
Abstract
Marine mussels secret protein-based adhesives, which enable them to anchor to various surfaces in a saline, intertidal zone. Mussel foot proteins (Mfps) contain a large abundance of a unique, catecholic amino acid, Dopa, in their protein sequences. Catechol offers robust and durable adhesion to various substrate surfaces and contributes to the curing of the adhesive plaques. In this article, we review the unique features and the key functionalities of Mfps, catechol chemistry, and strategies for preparing catechol-functionalized polymers. Specifically, we reviewed recent findings on the contributions of various features of Mfps on interfacial binding, which include coacervate formation, surface drying properties, control of the oxidation state of catechol, among other features. We also summarized recent developments in designing advanced biomimetic materials including coacervate-forming adhesives, mechanically improved nano- and micro-composite adhesive hydrogels, as well as smart and self-healing materials. Finally, we review the applications of catechol-functionalized materials for the use as biomedical adhesives, therapeutic applications, and antifouling coatings. © 2016 The Authors. Journal of Polymer Science Part A: Polymer Chemistry Published by Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2017, 55, 9-33.
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Affiliation(s)
- Pegah Kord Forooshani
- Department of Biomedical EngineeringMichigan Technological UniversityHoughtonMichigan49931
| | - Bruce P. Lee
- Department of Biomedical EngineeringMichigan Technological UniversityHoughtonMichigan49931
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Beddoes CM, Whitehouse MR, Briscoe WH, Su B. Hydrogels as a Replacement Material for Damaged Articular Hyaline Cartilage. MATERIALS (BASEL, SWITZERLAND) 2016; 9:E443. [PMID: 28773566 PMCID: PMC5456752 DOI: 10.3390/ma9060443] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/05/2016] [Revised: 05/24/2016] [Accepted: 05/30/2016] [Indexed: 12/12/2022]
Abstract
Hyaline cartilage is a strong durable material that lubricates joint movement. Due to its avascular structure, cartilage has a poor self-healing ability, thus, a challenge in joint recovery. When severely damaged, cartilage may need to be replaced. However, currently we are unable to replicate the hyaline cartilage, and as such, alternative materials with considerably different properties are used. This results in undesirable side effects, including inadequate lubrication, wear debris, wear of the opposing articular cartilage, and weakening of the surrounding tissue. With the number of surgeries for cartilage repair increasing, a need for materials that can better mimic cartilage, and support the surrounding material in its typical function, is becoming evident. Here, we present a brief overview of the structure and properties of the hyaline cartilage and the current methods for cartilage repair. We then highlight some of the alternative materials under development as potential methods of repair; this is followed by an overview of the development of tough hydrogels. In particular, double network (DN) hydrogels are a promising replacement material, with continually improving physical properties. These hydrogels are coming closer to replicating the strength and toughness of the hyaline cartilage, while offering excellent lubrication. We conclude by highlighting several different methods of integrating replacement materials with the native joint to ensure stability and optimal behaviour.
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Affiliation(s)
- Charlotte M Beddoes
- School of Oral and Dental Sciences, University of Bristol, Lower Maudlin Street, Bristol BS1 2LY, UK.
| | - Michael R Whitehouse
- Musculoskeletal Research Unit, University of Bristol, Level 1 Learning and Research Building, Bristol BS10 5NB, UK.
| | - Wuge H Briscoe
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK.
| | - Bo Su
- School of Oral and Dental Sciences, University of Bristol, Lower Maudlin Street, Bristol BS1 2LY, UK.
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Perrini M, Barrett D, Ochsenbein-Koelble N, Zimmermann R, Messersmith P, Ehrbar M. A comparative investigation of mussel-mimetic sealants for fetal membrane repair. J Mech Behav Biomed Mater 2016; 58:57-64. [DOI: 10.1016/j.jmbbm.2015.07.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Revised: 06/29/2015] [Accepted: 07/13/2015] [Indexed: 12/21/2022]
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A mussel-inspired double-crosslinked tissue adhesive intended for internal medical use. Acta Biomater 2016; 33:51-63. [PMID: 26850148 DOI: 10.1016/j.actbio.2016.02.003] [Citation(s) in RCA: 164] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Revised: 01/27/2016] [Accepted: 02/01/2016] [Indexed: 01/04/2023]
Abstract
It has been a great challenge to develop aldehyde-free tissue adhesives that can function rapidly and controllably on wet internal tissues with fine adhesion strength, sound biocompatibility and degradability. To this end, we have devised a mussel-inspired easy-to-use double-crosslink tissue adhesive (DCTA) comprising a dopamine-conjugated gelatin macromer, a rapid crosslinker (namely, Fe(3+)), and a long-term acting crosslinker (namely, genipin). As a mussel-inspired gluing macromer, dopamine is grafted onto gelatin backbone via an one-step reaction, the catechol groups of which are capable of performing strong wet adhesion on tissue surfaces. By addition of genipin and Fe(3+), the formation of catechol-Fe(3+) complexation and accompanying spontaneous curing of genipin-primed covalent crosslinking of gluing macromers in one pot endows DCTA with the double-crosslink adhesion mechanism. Namely, the reversible catechol-Fe(3+) crosslinking executes an controllable and instant adhesive curing; while genipin-induced stable covalent crosslinking promises it with long-term effectiveness. This novel DCTA exhibits significantly higher wet tissue adhesion capability than the commercially available fibrin glue when applied on wet porcine skin and cartilage. In addition, this DCTA also demonstrates fine elasticity, sound biodegradability, and biocompatibility when contacting in vitro cultured cells and blood. In vivo biocompatibility and biodegradability are checked and confirmed via trials of subcutaneous implantation in nude mice model. This newly developed DCTA may be a highly promising product as a biological glue for internal medical use including internal tissue adhesion, sealing, and hemostasis. STATEMENT OF SIGNIFICANCE There is a great demand for ideal tissue adhesives that can be widely used in gluing wet internal tissues. Here, we have devised a mussel-inspired easy-to-use double-crosslink tissue adhesive (DCTA) that meets the conditions as an ideal tissue adhesive. It is composed of gelatin-dopamine conjugates - a gluing macromer, Fe(3+) - a rapid crosslinker, and genipin - a long-term acting crosslinker. This DCTA is constructed with a novel complexation-covalent double-crosslinking principle in one pot, in which the catechol-Fe(3+) crosslinking executes a controllable and instant adhesive curing, at the same time, genipin-induced covalent crosslinking promises it with long-term effectiveness in physiology conditions. This novel DCTA, with excellent wet tissue adhesion capability, fine elasticity, sound biodegradability, and biocompatibility, is a promising biological glue for internal medical use in surgical operations.
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Lin MH, Anderson J, Pinnaratip R, Meng H, Konst S, DeRouin AJ, Rajachar R, Ong KG, Lee BP. Monitoring the Long-Term Degradation Behavior of Biomimetic Bioadhesive Using Wireless Magnetoelastic Sensor. IEEE Trans Biomed Eng 2016; 62:1838-42. [PMID: 26087077 DOI: 10.1109/tbme.2015.2405251] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The degradation behavior of a tissue adhesive is critical to its ability to repair a wound while minimizing prolonged inflammatory response. Traditional degradation tests can be expensive to perform, as they require large numbers of samples. The potential for using magnetoelastic resonant sensors to track bioadhesive degradation behavior was investigated. Specifically, biomimetic poly (ethylene glycol)- (PEG-) based adhesive was coated onto magnetoelastic (ME) sensor strips. Adhesive-coated samples were submerged in solutions buffered at multiple pH levels (5.7, 7.4 and 10.0) at body temperature (37 °C) and the degradation behavior of the adhesive was tracked wirelessly by monitoring the changes in the resonant amplitude of the sensors for over 80 days. Adhesive incubated at pH 7.4 degraded over 75 days, which matched previously published data for bulk degradation behavior of the adhesive while utilizing significantly less material (∼10(3) times lower). Adhesive incubated at pH 10.0 degraded within 25 days while samples incubated at pH 5.7 did not completely degrade even after 80 days of incubation. As expected, the rate of degradation increased with increasing pH as the rate of ester bond hydrolysis is higher under basic conditions. As a result of requiring a significantly lower amount of samples compared to traditional methods, the ME sensing technology is highly attractive for fully characterizing the degradation behavior of tissue adhesives in a wide range of physiological conditions.
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Biomimetic Approach to Designing Adhesive Hydrogels: From Chemistry to Application. SPRINGER SERIES IN BIOMATERIALS SCIENCE AND ENGINEERING 2016. [DOI: 10.1007/978-3-319-22861-7_15] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Pan Y, Zhan Y, Ji H, Niu X, Zhong Z. Can hyperelastic material parameters be uniquely determined from indentation experiments? RSC Adv 2016. [DOI: 10.1039/c6ra15747e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Uniqueness of hyperelastic parameters depends on a simple criterion: whether dimensionless material parameters are coupled with indentation displacement.
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Affiliation(s)
- Yihui Pan
- School of Aerospace Engineering and Applied Mechanics
- Tongji University
- Shanghai 200092
- People's Republic of China
| | - Yuexing Zhan
- Center for Advanced Structural Materials (CASM)
- Department of Mechanical and Biomedical Engineering
- City University of Hong Kong
- Kowloon
- People's Republic of China
| | - Huanyun Ji
- Center for Advanced Structural Materials (CASM)
- Department of Mechanical and Biomedical Engineering
- City University of Hong Kong
- Kowloon
- People's Republic of China
| | - Xinrui Niu
- Center for Advanced Structural Materials (CASM)
- Department of Mechanical and Biomedical Engineering
- City University of Hong Kong
- Kowloon
- People's Republic of China
| | - Zheng Zhong
- School of Aerospace Engineering and Applied Mechanics
- Tongji University
- Shanghai 200092
- People's Republic of China
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Kaushik NK, Kaushik N, Pardeshi S, Sharma JG, Lee SH, Choi EH. Biomedical and Clinical Importance of Mussel-Inspired Polymers and Materials. Mar Drugs 2015; 13:6792-817. [PMID: 26569266 PMCID: PMC4663554 DOI: 10.3390/md13116792] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Revised: 11/02/2015] [Accepted: 11/03/2015] [Indexed: 12/14/2022] Open
Abstract
The substance secreted by mussels, also known as nature's glue, is a type of liquid protein that hardens rapidly into a solid water-resistant adhesive material. While in seawater or saline conditions, mussels can adhere to all types of surfaces, sustaining its bonds via mussel adhesive proteins (MAPs), a group of proteins containing 3,4-dihydroxyphenylalanine (DOPA) and catecholic amino acid. Several aspects of this adhesion process have inspired the development of various types of synthetic materials for biomedical applications. Further, there is an urgent need to utilize biologically inspired strategies to develop new biocompatible materials for medical applications. Consequently, many researchers have recently reported bio-inspired techniques and materials that show results similar to or better than those shown by MAPs for a range of medical applications. However, the susceptibility to oxidation of 3,4-dihydroxyphenylalanine poses major challenges with regard to the practical translation of mussel adhesion. In this review, various strategies are discussed to provide an option for DOPA/metal ion chelation and to compensate for the limitations imposed by facile 3,4-dihydroxyphenylalanine autoxidation. We discuss the anti-proliferative, anti-inflammatory, anti-microbial activity, and adhesive behaviors of mussel bio-products and mussel-inspired materials (MIMs) that make them attractive for synthetic adaptation. The development of biologically inspired adhesive interfaces, bioactive mussel products, MIMs, and arising areas of research leading to biomedical applications are considered in this review.
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Affiliation(s)
| | - Neha Kaushik
- Plasma Bioscience Research Center, Kwangwoon University, Seoul 139701, Korea.
| | - Sunil Pardeshi
- Plasma Bioscience Research Center, Kwangwoon University, Seoul 139701, Korea.
| | - Jai Gopal Sharma
- Department of Biotechnology, Delhi Technological University, Delhi 110042, India.
| | - Seung Hyun Lee
- Graduate School of Information Contents, Kwangwoon University, Seoul 139701, Korea.
| | - Eun Ha Choi
- Plasma Bioscience Research Center, Kwangwoon University, Seoul 139701, Korea.
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Go K, Kim Y, Lee AH, Staricha K, Messersmith P, Glucksberg M. Design of Novel Mixer and Applicator for Two-Component Surgical Adhesives. J Med Device 2015; 9:0450011-450016. [PMID: 26421090 DOI: 10.1115/1.4030828] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Revised: 06/03/2015] [Indexed: 11/08/2022] Open
Abstract
Current mixer and applicator devices on the market are not able to properly and efficiently mix two-component surgical adhesives in small volumes necessary to achieve economic viability. Furthermore, in these devices a significant amount of adhesive is wasted during the application process, as material within the dead space of the mixing chamber must be discarded. We have designed and demonstrated a new active mixer and applicator system capable of rapidly and efficiently mixing two components of an adhesive and applying it to the surgical site. Recently, Messersmith et al. have developed a tissue adhesive inspired by the mussel byssus and have shown that it is effective as a surgical sealant, and is especially suited for wet environments such as in fetal surgery. Like some other tissue sealants, this one requires that two components of differing viscosities be thoroughly mixed within a specified and short time period. Through a combination of compression and shear testing, we demonstrated that our device could effectively mix the adhesive developed by Messersmith et al. and improve its shear strength to significantly higher values than what has been reported for vortex mixing. Overall, our mixer and applicator system not only has potential applications in mixing and applying various adhesives in multiple surgical fields but also makes this particular adhesive viable for clinical use.
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Affiliation(s)
- Kevin Go
- Department of Biomedical Engineering, McCormick School of Engineering and Applied Science, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208 e-mail:
| | - Yeong Kim
- Department of Biomedical Engineering, McCormick School of Engineering and Applied Science, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208 e-mail:
| | - Andy H Lee
- Department of Biomedical Engineering, McCormick School of Engineering and Applied Science, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208 e-mail:
| | - Kelly Staricha
- Department of Biomedical Engineering, McCormick School of Engineering and Applied Science, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208 e-mail:
| | - Phillip Messersmith
- Department of Biomedical Engineering, McCormick School of Engineering and Applied Science, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208 e-mail:
| | - Matthew Glucksberg
- Department of Biomedical Engineering, McCormick School of Engineering and Applied Science, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208 e-mail:
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Liu Y, Meng H, Konst S, Sarmiento R, Rajachar R, Lee BP. Injectable dopamine-modified poly(ethylene glycol) nanocomposite hydrogel with enhanced adhesive property and bioactivity. ACS APPLIED MATERIALS & INTERFACES 2014; 6:16982-92. [PMID: 25222290 PMCID: PMC4189622 DOI: 10.1021/am504566v] [Citation(s) in RCA: 215] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/14/2023]
Abstract
A synthetic mimic of mussel adhesive protein, dopamine-modified four-armed poly(ethylene glycol) (PEG-D4), was combined with a synthetic nanosilicate, Laponite (Na(0.7+)(Mg5.5Li0.3Si8)O20(OH)4)(0.7-)), to form an injectable naoncomposite tissue adhesive hydrogel. Incorporation of up to 2 wt % Laponite significantly reduced the cure time while enhancing the bulk mechanical and adhesive properties of the adhesive due to strong interfacial binding between dopamine and Laponite. The addition of Laponite did not alter the degradation rate and cytocompatibility of PEG-D4 adhesive. On the basis of subcutaneous implantation in rat, PEG-D4 nanocomposite hydrogels elicited minimal inflammatory response and exhibited an enhanced level of cellular infiltration as compared to Laponite-free samples. The addition of Laponite is potentially a simple and effective method for promoting bioactivity in a bioinert, synthetic PEG-based adhesive while simultaneously enhancing its mechanical and adhesive properties.
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Affiliation(s)
- Yuan Liu
- Department
of Biomedical Engineering and Department of Chemistry, Michigan Technological University, Houghton, Michigan 49931, United States
| | - Hao Meng
- Department
of Biomedical Engineering and Department of Chemistry, Michigan Technological University, Houghton, Michigan 49931, United States
| | - Shari Konst
- Department
of Biomedical Engineering and Department of Chemistry, Michigan Technological University, Houghton, Michigan 49931, United States
| | - Ryan Sarmiento
- Department
of Biomedical Engineering and Department of Chemistry, Michigan Technological University, Houghton, Michigan 49931, United States
| | - Rupak Rajachar
- Department
of Biomedical Engineering and Department of Chemistry, Michigan Technological University, Houghton, Michigan 49931, United States
| | - Bruce P. Lee
- Department
of Biomedical Engineering and Department of Chemistry, Michigan Technological University, Houghton, Michigan 49931, United States
- E-mail: . Phone: (906) 487-3262
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42
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Cencer M, Liu Y, Winter A, Murley M, Meng H, Lee BP. Effect of pH on the rate of curing and bioadhesive properties of dopamine functionalized poly(ethylene glycol) hydrogels. Biomacromolecules 2014; 15:2861-9. [PMID: 25010812 PMCID: PMC4130238 DOI: 10.1021/bm500701u] [Citation(s) in RCA: 104] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2014] [Revised: 07/09/2014] [Indexed: 12/20/2022]
Abstract
The remarkable underwater adhesion strategy employed by mussels has inspired bioadhesives that have demonstrated promise in connective tissue repair, wound closure, and local delivery of therapeutic cells and drugs. While the pH of oxygenated blood and internal tissues is typically around 7.4, skin and tumor tissues are significantly more acidic. Additionally, blood loss during surgery and ischemia can lead to dysoxia, which lowers pH levels of internal tissues and organs. Using 4-armed PEG end-capped with dopamine (PEG-D) as a model adhesive polymer, the effect of pH on the rate of intermolecular cross-linking and adhesion to biological substrates of catechol-containing adhesives was determined. Adhesive formulated at an acidic pH (pH 5.7-6.7) demonstrated reduced curing rate, mechanical properties, and adhesive performance to pericardium tissues. Although a faster curing rate was observed at pH 8, these adhesives also demonstrated reduced mechanical and bioadhesive properties when compared to adhesives buffered at pH 7.4. Adhesives formulated at pH 7.4 demonstrated a good balance of fast curing rate, elevated mechanical properties and interfacial binding ability. UV-vis spectroscopy evaluation revealed that the stability of the transient oxidation intermediate of dopamine was increased under acidic conditions, which likely reduced the rate of intermolecular cross-linking and bulk cohesive properties for hydrogels formulated at these pH levels. At pH 8, competing cross-linking reaction mechanisms and reduced concentration of dopamine catechol due to auto-oxidation likely reduced the degree of dopamine polymerization and adhesive strength for these hydrogels. pH plays an important role in the adhesive performance of mussel-inspired bioadhesives and the pH of the adhesive formulation needs to be adjusted for the intended application.
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Affiliation(s)
- Morgan Cencer
- Department
of Chemistry and Department of Biomedical Engineering, Michigan
Technological University, Houghton, Michigan 49931, United States
| | - Yuan Liu
- Department
of Chemistry and Department of Biomedical Engineering, Michigan
Technological University, Houghton, Michigan 49931, United States
| | - Audra Winter
- Department
of Chemistry and Department of Biomedical Engineering, Michigan
Technological University, Houghton, Michigan 49931, United States
| | - Meridith Murley
- Department
of Chemistry and Department of Biomedical Engineering, Michigan
Technological University, Houghton, Michigan 49931, United States
| | - Hao Meng
- Department
of Chemistry and Department of Biomedical Engineering, Michigan
Technological University, Houghton, Michigan 49931, United States
| | - Bruce P. Lee
- Department
of Chemistry and Department of Biomedical Engineering, Michigan
Technological University, Houghton, Michigan 49931, United States
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Meddahi-Pellé A, Legrand A, Marcellan A, Louedec L, Letourneur D, Leibler L. Organ repair, hemostasis, and in vivo bonding of medical devices by aqueous solutions of nanoparticles. Angew Chem Int Ed Engl 2014; 53:6369-73. [PMID: 24740730 PMCID: PMC4320763 DOI: 10.1002/anie.201401043] [Citation(s) in RCA: 149] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Indexed: 01/20/2023]
Abstract
Sutures are traumatic to soft connective tissues, such as liver or lungs. Polymer tissue adhesives require complex in vivo control of polymerization or cross-linking reactions and currently suffer from being toxic, weak, or inefficient within the wet conditions of the body. Herein, we demonstrate using Stöber silica or iron oxide nanoparticles that nanobridging, that is, adhesion by aqueous nanoparticle solutions, can be used in vivo in rats to achieve rapid and strong closure and healing of deep wounds in skin and liver. Nanoparticles were also used to fix polymer membranes to tissues even in the presence of blood flow, such as occurring after liver resection, yielding permanent hemostasis within a minute. Furthermore, medical devices and tissue engineering constructs were fixed to organs such as a beating heart. The simplicity, rapidity, and robustness of nanobridging bode well for clinical applications, surgery, and regenerative medicine.
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Affiliation(s)
- Anne Meddahi-Pellé
- Inserm U1148, LVTS; UniversitéParis 7, Université Paris 13, Sorbonne Paris Cité, Hôpital Bichat, 46 rue rue H Huchard, 75018 Paris (France)
- UniversitéParis 13, Sorbonne Paris Cité, Paris (France)
| | - Aurélie Legrand
- Matière Molle et ChimieUMR 7167 CNRS - ESPCI ParisTech, ESPCI, 10, rue Vauquelin, 75005 Paris (France)
| | - Alba Marcellan
- Matière Molle et ChimieUMR 7167 CNRS - ESPCI ParisTech, ESPCI, 10, rue Vauquelin, 75005 Paris (France)
- Université Pierre et Marie Curie, Sorbonne UniversitésParis (France)
| | - Liliane Louedec
- Inserm U1148, LVTS; UniversitéParis 7, Université Paris 13, Sorbonne Paris Cité, Hôpital Bichat, 46 rue rue H Huchard, 75018 Paris (France)
| | - Didier Letourneur
- Inserm U1148, LVTS; UniversitéParis 7, Université Paris 13, Sorbonne Paris Cité, Hôpital Bichat, 46 rue rue H Huchard, 75018 Paris (France)
| | - Ludwik Leibler
- Matière Molle et ChimieUMR 7167 CNRS - ESPCI ParisTech, ESPCI, 10, rue Vauquelin, 75005 Paris (France)
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44
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Meddahi‐Pellé A, Legrand A, Marcellan A, Louedec L, Letourneur D, Leibler L. Organ Repair, Hemostasis, and In Vivo Bonding of Medical Devices by Aqueous Solutions of Nanoparticles. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201401043] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Anne Meddahi‐Pellé
- Inserm U1148, LVTS; Université Paris 7, Université Paris 13, Sorbonne Paris Cité, Hôpital Bichat, 46 rue rue H Huchard, 75018 Paris (France)
- Université Paris 13, Sorbonne Paris Cité, Paris (France)
| | - Aurélie Legrand
- Matière Molle et Chimie, UMR 7167 CNRS ‐ ESPCI ParisTech, ESPCI, 10, rue Vauquelin, 75005 Paris (France)
| | - Alba Marcellan
- Matière Molle et Chimie, UMR 7167 CNRS ‐ ESPCI ParisTech, ESPCI, 10, rue Vauquelin, 75005 Paris (France)
- Université Pierre et Marie Curie, Sorbonne Universités, Paris (France)
| | - Liliane Louedec
- Inserm U1148, LVTS; Université Paris 7, Université Paris 13, Sorbonne Paris Cité, Hôpital Bichat, 46 rue rue H Huchard, 75018 Paris (France)
| | - Didier Letourneur
- Inserm U1148, LVTS; Université Paris 7, Université Paris 13, Sorbonne Paris Cité, Hôpital Bichat, 46 rue rue H Huchard, 75018 Paris (France)
| | - Ludwik Leibler
- Matière Molle et Chimie, UMR 7167 CNRS ‐ ESPCI ParisTech, ESPCI, 10, rue Vauquelin, 75005 Paris (France)
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Li C, Wang T, Hu L, Wei Y, Liu J, Mu X, Nie J, Yang D. Photocrosslinkable bioadhesive based on dextran and PEG derivatives. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 35:300-6. [DOI: 10.1016/j.msec.2013.10.032] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2013] [Revised: 09/02/2013] [Accepted: 10/29/2013] [Indexed: 01/11/2023]
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Rodriguez-Emmenegger C, Preuss CM, Yameen B, Pop-Georgievski O, Bachmann M, Mueller JO, Bruns M, Goldmann AS, Bastmeyer M, Barner-Kowollik C. Controlled cell adhesion on poly(dopamine) interfaces photopatterned with non-fouling brushes. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2013; 25:6123-7. [PMID: 23999835 DOI: 10.1002/adma.201302492] [Citation(s) in RCA: 111] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2013] [Revised: 07/04/2013] [Indexed: 05/22/2023]
Abstract
Bioinspired poly(dopamine) (PDA) films are merged with antifouling poly(MeOEGMA) brushes utilizing a nitrile imine-mediated tetrazole-ene cycloaddition (NITEC)-based phototriggered surface encoding protocol. The antifouling brushes were photopatterned on PDA surfaces, leading cells to form confluent layers in the non-irradiated sections, while no adhesion occurred on the brushes resulting in a remarkably precise cell pattern. The presented strategy paves the way for the design of tailor-made patterned cell interfaces.
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Affiliation(s)
- Cesar Rodriguez-Emmenegger
- Preparative Macromolecular Chemistry, Institut für Technische Chemie und Polymerchemie, Karlsruhe Institute of Technology (KIT), Engesserstrasse 18, 76131, Karlsruhe, Germany; Zell- und Neurobiologie, Zoologisches Institut, Karlsruhe Institute of Technology (KIT), Haid-und-Neu-Str. 9, Karlsruhe and Institut für Funktionelle Grenzflächen (IFG), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
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Papanna R, Mann LK, Moise KY, Johnson A, Moise KJ. Absorbable gelatin plug does not prevent iatrogenic preterm premature rupture of membranes after fetoscopic laser surgery for twin-twin transfusion syndrome. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2013; 42:456-460. [PMID: 23606579 DOI: 10.1002/uog.12487] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2013] [Revised: 04/07/2013] [Accepted: 04/10/2013] [Indexed: 06/02/2023]
Abstract
OBJECTIVE Despite fetoscopic laser ablation (FLA) having emerged as an effective treatment for twin-twin transfusion syndrome (TTTS), major postintervention challenges, such as iatrogenic preterm premature rupture of membranes (iPPROM), remain. A chorioamniotic plug (CAP) made of absorbable gelatin sponge has been used to seal the trocar entry site in the chorioamniotic layers to promote healing and prevent iPPROM, yet the results have been equivocal. Our objective was to test the hypothesis that, following FLA for TTTS, iPPROM may be prevented by placement of an absorbable gelatin CAP. METHODS A retrospective cohort study was performed on prospectively collected data from 134 consecutive patients who underwent FLA for TTTS. The decision for CAP placement was at the discretion of the physician. Preoperative, operative and postoperative variables were collected and analyzed. The primary outcome was the incidence of iPPROM, and the secondary outcomes were procedure-to-delivery interval and gestational age at delivery. Comparative statistical analysis was performed as appropriate. RESULTS A CAP was placed in 72 (54%) of 134 patients. Factors significantly associated with CAP placement were higher gravidity (P = 0.03), anterior placentation (P = 0.04), general endotracheal intubation (P = 0.02) and a cannula diameter of 12-Fr (P = 0.003). There were no differences between CAP and no-CAP groups in the rate of iPPROM (39% vs 34%, respectively; P = 0.42) or in the procedure-to-delivery interval (65.3 ± 34.7 days vs 58.2 ± 30.8 days, respectively; P = 0.21). The gestational age at delivery was later in the CAP group compared with the no-CAP group (30.7 ± 4.5 weeks vs 28.9 ± 3.9 weeks, respectively; P = 0.02). CONCLUSIONS CAP did not reduce the overall risk for iPPROM and did not increase the procedure-to-delivery interval. Further research is needed to identify other methods to prevent iPPROM and prolong pregnancy after laser therapy.
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Affiliation(s)
- R Papanna
- Section of Maternal-Fetal Medicine, Obstetrics, Gynecology and Reproductive Sciences, Yale School of Medicine, New Haven, CT, USA; Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Baylor College of Medicine and the Texas Children's Fetal Center, Houston, TX, USA
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Kivelio A, Dekoninck P, Perrini M, Brubaker CE, Messersmith PB, Mazza E, Deprest J, Zimmermann R, Ehrbar M, Ochsenbein-Koelble N. Mussel mimetic tissue adhesive for fetal membrane repair: initial in vivo investigation in rabbits. Eur J Obstet Gynecol Reprod Biol 2013; 171:240-5. [PMID: 24075447 DOI: 10.1016/j.ejogrb.2013.09.003] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2013] [Revised: 07/31/2013] [Accepted: 09/02/2013] [Indexed: 12/31/2022]
Abstract
OBJECTIVE Iatrogenic preterm prelabour rupture of fetal membranes (iPPROM) remains the main complication after invasive interventions into the intrauterine cavity. The aim of this study was to evaluate the sealing capability and tissue interaction of mussel-mimetic tissue adhesive (mussel glue) in comparison to fibrin glue on punctured fetal membranes in vivo. STUDY DESIGN A mid-gestational rabbit model was used for testing the materials. The fetal sacs of pregnant rabbits at day 23 were randomly assigned into experimental groups: unoperated (negative control), unclosed puncture (positive control), commercially available fibrin glue (FG) with decellularized amnion scaffold (DAM), mussel glue (MG) with DAM, or mussel glue alone. Evaluation was done at term (30 days' gestation) assessing fetal survival, fetal membrane integrity and histology of the membranes. RESULTS Fetal survival was not significantly lower in any of the treatment groups compared to the negative control. All plugging materials could be found at the end of the pregnancy and no adverse effects on the fetus or the pregnant does could be observed. Sac integrity was higher in all treatment groups compared to the positive control group but significant only in the FG+DAM group. Cellular infiltration could be seen in fibrin glue and DAM in contrast to mussel glue which was only tightly adhering to the surrounding tissue. These cells were mostly of mesenchymal phenotype staining positive for vimentin. CD68 positive macrophages were found clustered around all the plugging materials, but their numbers were only significantly increased for the mussel glue alone group compared to negative controls. CONCLUSIONS Mussel glues performance in sealing fetal membranes in the rabbit model was comparable to that of fibrin glue. Taking into account its other favorable properties, it is a noteworthy candidate for a clinically applicable fetal membrane sealant.
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Affiliation(s)
- A Kivelio
- Department of Obstetrics, University Hospital Zurich, Switzerland
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Bae KH, Wang LS, Kurisawa M. Injectable biodegradable hydrogels: progress and challenges. J Mater Chem B 2013; 1:5371-5388. [PMID: 32261243 DOI: 10.1039/c3tb20940g] [Citation(s) in RCA: 201] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Over the past decades, injectable hydrogels have emerged as promising biomaterials because of their biocompatibility, excellent permeability, minimal invasion, and easy integration into surgical procedures. These systems provide an effective and convenient way to administer a wide variety of bioactive agents such as proteins, genes, and even living cells. Additionally, they can be designed to be degradable and eventually cleared from the body after completing their missions. Given their unique characteristics, injectable biodegradable hydrogels have been actively explored as drug reservoir systems for sustained release of bioactive agents and temporary extracellular matrices for tissue engineering. This review provides an overview of state-of-the-art strategies towards constructing a rational design of injectable biodegradable hydrogels for protein drug delivery and tissue engineering. We also discuss the use of injectable hydrogels for gene delivery systems and biomedical adhesives.
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Affiliation(s)
- Ki Hyun Bae
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, The Nanos #04-01, Singapore 138669.
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