1
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Pang B, Li W, Li J, Yang S, Sun T, Yu Q, Yue K, Zhang W. A Microphase Separation-Driven Supramolecular Tissue Adhesive with Instantaneous Dry/Wet Adhesion, Alcohol-Triggered Debonding, and Antibacterial Hemostasis. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2025:e2501810. [PMID: 40255175 DOI: 10.1002/adma.202501810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2025] [Revised: 03/26/2025] [Indexed: 04/22/2025]
Abstract
Tissue adhesives are promising materials for expeditious hemorrhage control, while it remains a grand challenge to engineer a superior formulation with instantaneous adhesion, on-demand debonding, and the integration of multiple desirable properties such as antibacterial and hemostatic capabilities. Herein, a multifunctional supramolecular tissue adhesive based on guanidinium-modified polydimethylsiloxane (PDMS) is introduced, driven by a reversible microphase separation mechanism. By optimizing the content of guanidinium ions, precise control over cohesive strength, adhesion, and wettability is achieved, resulting in strong instantaneous adhesion under both dry and wet conditions. Notably, the supramolecular nature of the adhesive allows for convenient on-demand removal using medical-grade alcohol, offering a critical advantage for easy debonding. Additionally, the adhesive exhibits remarkable antimicrobial properties while maintaining excellent biocompatibility and hemocompatibility. Its underwater injectability supports minimally invasive surgical procedures. Furthermore, the adhesive's ability to incorporate solid particles enhances its versatility, particularly for the development of drug-embedded bioadhesives. This work addresses key challenges in tissue adhesive design via a microphase separation-driven working principle, thereby opening promising new avenues for the development of advanced bioadhesives with tailored properties and enhanced surgical and wound care outcomes.
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Affiliation(s)
- Bowen Pang
- South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Weichang Li
- Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, 510055, P. R. China
| | - Jiaqin Li
- South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Shangwu Yang
- South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Taolin Sun
- South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter, South China University of Technology, Guangzhou, 510640, P. R. China
- Guangdong Basic Research Center of Excellence for Energy and Information Polymer Materials, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Qianqian Yu
- South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Kan Yue
- South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter, South China University of Technology, Guangzhou, 510640, P. R. China
- Guangdong Basic Research Center of Excellence for Energy and Information Polymer Materials, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Wei Zhang
- South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter, South China University of Technology, Guangzhou, 510640, P. R. China
- Guangdong Basic Research Center of Excellence for Energy and Information Polymer Materials, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, 510640, P. R. China
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2
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Cheng Y, Lee S, Xiao Y, Ohmura S, Bourdages LJ, Puma J, He Z, Yang Z, Brown J, Provost J, Li J. Ultrasound Cavitation Enables Rapid, Initiator-Free Fabrication of Tough Anti-Freezing Hydrogels. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2025:e2416844. [PMID: 40245193 DOI: 10.1002/advs.202416844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2024] [Revised: 02/19/2025] [Indexed: 04/19/2025]
Abstract
Hydrogels are often synthesized with thermal or photo-initiated gelation, leaving alternative energy sources less explored. While ultrasound has been used for polymer synthesis and mechanochemistry, its application through cavitation for hydrogel synthesis as a constructive force is rare, and the underlying sonochemical mechanisms are poorly understood. Here, the application and mechanism of ultrasound cavitation for rapid, initiator-free, and oxygen-tolerant fabrication of tough anti-freezing hydrogels is reported. By incorporating polyol solvents and interpenetrating polymers into the gelling solution, radical generation is amplified and network formation is enhanced. Using tough polyacrylamide-alginate hydrogels as a model system, rapid gelation (as fast as 2 minutes) and high fracture toughness (up to 600 J m- 2) is demonstrated. By varying ultrasound intensity, crosslinker-to-monomer ratio, and glycerol concentration, the synthesis-structure-property relation is established for the resulting sonogels and the underlying mechanism is uncovered using combined molecular, optical, and mechanical testing techniques. The coupling of gelation and convection under ultrasound results in sonogels with unique structural and mechanical properties. Additionally, the fabrication of hydrogel constructs is demonstrated using both non-focused and high-intensity focused ultrasound. This work establishes a foundation for ultrasound-driven sono-fabrication and highlights new avenues in soft materials, advanced manufacturing, bioadhesives, and tissue engineering.
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Affiliation(s)
- Yixun Cheng
- Department of Mechanical Engineering, McGill University, 817 Sherbrooke St West, Montreal, Quebec, H3A 0C3, Canada
| | - Stephen Lee
- Department of Engineering Physics, Polytechnique Montreal, 2500 Chemin de Polytechnique, Montreal, Quebec, H3T 1J4, Canada
| | - Yihang Xiao
- Department of Mechanical Engineering, McGill University, 817 Sherbrooke St West, Montreal, Quebec, H3A 0C3, Canada
| | - Shou Ohmura
- Department of Mechanical Engineering, McGill University, 817 Sherbrooke St West, Montreal, Quebec, H3A 0C3, Canada
- Graduate School of Life Science, Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo, Hokkaido, 060-0810, Japan
| | - Louis-Jacques Bourdages
- Department of Mechanical Engineering, McGill University, 817 Sherbrooke St West, Montreal, Quebec, H3A 0C3, Canada
| | - Justin Puma
- Department of Mechanical Engineering, McGill University, 817 Sherbrooke St West, Montreal, Quebec, H3A 0C3, Canada
| | - Zixin He
- Department of Mechanical Engineering, McGill University, 817 Sherbrooke St West, Montreal, Quebec, H3A 0C3, Canada
| | - Zhen Yang
- Department of Mechanical Engineering, McGill University, 817 Sherbrooke St West, Montreal, Quebec, H3A 0C3, Canada
| | - Jeremy Brown
- Department of Electrical and Computer Engineering, Dalhousie University, 1459 Oxford Street, Halifax, Nova Scotia, B3H 4R2, Canada
| | - Jean Provost
- Department of Engineering Physics, Polytechnique Montreal, 2500 Chemin de Polytechnique, Montreal, Quebec, H3T 1J4, Canada
| | - Jianyu Li
- Department of Mechanical Engineering, McGill University, 817 Sherbrooke St West, Montreal, Quebec, H3A 0C3, Canada
- Department of Biomedical Engineering, McGill University, 3480 University Street, Montreal, Quebec, H3A 0E9, Canada
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3
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Ying B, Nan K, Zhu Q, Khuu T, Ro H, Qin S, Wang S, Jiang K, Chen Y, Bao G, Jenkins J, Pettinari A, Kuosmanen J, Ishida K, Fabian N, Lopes A, Codreanu F, Morimoto J, Li J, Hayward A, Langer R, Traverso G. An electroadhesive hydrogel interface prolongs porcine gastrointestinal mucosal theranostics. Sci Transl Med 2025; 17:eadq1975. [PMID: 40009695 DOI: 10.1126/scitranslmed.adq1975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2024] [Revised: 09/14/2024] [Accepted: 01/29/2025] [Indexed: 02/28/2025]
Abstract
Establishing a robust and intimate mucosal interface that allows medical devices to remain within lumen-confined organs for extended periods has valuable applications, particularly for gastrointestinal theranostics. Here, we report the development of an electroadhesive hydrogel interface for robust and prolonged mucosal retention after electrical activation (e-GLUE). The e-GLUE device is composed of cationic polymers interpenetrated within a tough hydrogel matrix. An e-GLUE electrode design eliminated the need for invasive submucosal placement of ground electrodes for electrical stimulation during endoscopic delivery. With an electrical stimulation treatment of about 1 minute, the cationic polymers diffuse and interact with polyanionic proteins that have a relatively slow cellular turnover rate in the deep mucosal tissue. This mucosal adhesion mechanism increased the adhesion energy of hydrogels on the mucosa by up to 30-fold and enabled in vivo gastric retention of e-GLUE devices in a pig stomach for up to 30 days. The adhesion strength was modulated by polycationic chain length, electrical stimulation time, gel thickness, cross-linking density, voltage amplitude, polycation concentration, and perimeter-to-area ratio of the electrode assembly. In porcine studies, e-GLUE demonstrated rapid mucosal adhesion in the presence of luminal fluid and mucus exposure. In proof-of-concept studies, we demonstrated e-GLUE applications for mucosal hemostasis, sustained local delivery of therapeutics, and intimate biosensing in the gastrointestinal tract, which is an ongoing clinical challenge for commercially available alternatives, such as endoclips and mucoadhesive. The e-GLUE platform could enable theranostic applications across a range of digestive diseases, including recurrent gastrointestinal bleeding and inflammatory bowel disease.
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Affiliation(s)
- Binbin Ying
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Division of Gastroenterology, Hepatology and Endoscopy, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Kewang Nan
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Division of Gastroenterology, Hepatology and Endoscopy, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310030, China
| | - Qing Zhu
- College of Medical Device, Zhejiang Pharmaceutical University, Ningbo 315104, China
| | - Tom Khuu
- Division of Gastroenterology, Hepatology and Endoscopy, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Hana Ro
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Sophia Qin
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Shubing Wang
- Division of Gastroenterology, Hepatology and Endoscopy, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Karen Jiang
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Yonglin Chen
- Division of Gastroenterology, Hepatology and Endoscopy, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Guangyu Bao
- Department of Mechanical Engineering, McGill University, Montreal, QC H3A 0C3, Canada
| | - Josh Jenkins
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Andrew Pettinari
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Johannes Kuosmanen
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Keiko Ishida
- Division of Gastroenterology, Hepatology and Endoscopy, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Niora Fabian
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Aaron Lopes
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Division of Gastroenterology, Hepatology and Endoscopy, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Flavia Codreanu
- Division of Gastroenterology, Hepatology and Endoscopy, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Joshua Morimoto
- Division of Gastroenterology, Hepatology and Endoscopy, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Jason Li
- Division of Gastroenterology, Hepatology and Endoscopy, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | - Alison Hayward
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Division of Gastroenterology, Hepatology and Endoscopy, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Robert Langer
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Giovanni Traverso
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Division of Gastroenterology, Hepatology and Endoscopy, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
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4
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Ma Z, Obuseh FO, Freedman BR, Kim J, Torre M, Mooney DJ. Integrating Hydrogels and Biomedical Plastics via In Situ Physical Entanglements and Covalent Bonding. Adv Healthc Mater 2025; 14:e2402605. [PMID: 39722156 DOI: 10.1002/adhm.202402605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2024] [Revised: 10/27/2024] [Indexed: 12/28/2024]
Abstract
Both rigid plastics and soft hydrogels find ample applications in engineering and medicine but bear their own disadvantages that limit their broader applications. Bonding these mechanically dissimilar materials may resolve these limitations, preserve their advantages, and offer new opportunities as biointerfaces. Here, a robust adhesion strategy is proposed to integrate highly entangled tough hydrogels and diverse plastics with high interfacial adhesion energy and strength. Systemic investigations on the effects of hydrogel monomer content and crosslink fraction revealed the significant contributions of both polymer physical entanglements and interfacial covalent bonding. This hybrid engineering strategy also enables the plastic-hydrogel composite to attenuate foreign body response caused by pristine rigid plastics in vivo in mice. This versatile materials engineering approach may be broadly applicable to other polymer-based devices commonly used in regenerative medicine and surgical robotics.
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Affiliation(s)
- Zhenwei Ma
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA, 02215, USA
| | - Favour O Obuseh
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA, 02215, USA
- Harvard-MIT Health Sciences and Technology, Cambridge, MA, 02139, USA
| | - Benjamin R Freedman
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA, 02215, USA
- Department of Orthopaedic Surgery, Beth Israel Deaconess Medical Center, Boston, MA, 02215, USA
| | - Junsoo Kim
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA
- Department of Mechanical Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - Matthew Torre
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA
| | - David J Mooney
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA, 02215, USA
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5
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Chen B, He B, Tucker AM, Biluck I, Leung TH, Schaer TP, Yang S. An Environmentally Stable, Biocompatible, and Multilayered Wound Dressing Film with Reversible and Strong Adhesion. Adv Healthc Mater 2024; 13:e2400827. [PMID: 39263787 DOI: 10.1002/adhm.202400827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2024] [Revised: 09/02/2024] [Indexed: 09/13/2024]
Abstract
Reversible adhesives for wound care improve patient experiences by permitting reuse and minimizing further tissue injury. Existing reversible bandages are vulnerable to water and can undergo unwanted deformation during removal and readdressing procedures. Here, a biocompatible, multilayered, reversible wound dressing film that conforms to skin and is waterproof is designed. The inner layer is capable of instant adhesion to various substrates upon activation of the dynamic boronic ester bonds by water; intermediate hydrogel layer and outer silicone backing layer can enhance the dressing's elasticity and load distribution for adhesion, and the silicone outer layer protects the dressing from exposure to water. The adhesive layer is found to be biocompatible with mouse skin. Skin injuries on the mouse skin heal more rapidly with the film compared to no dressing controls. Evaluations of the film on skin of freshly euthanized minipigs corroborate the findings in the mouse model. The film remains attached to skins without delamination despite subjecting to various degrees of deformation. Exposure to water softens the film to allow removal from the skin without pulling any hair off. The multilayered design considers soft mechanics in each layer and will offer new insights to improve wound dressing performance and patient comfort.
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Affiliation(s)
- Baohong Chen
- Department of Materials Science and Engineering, University of Pennsylvania, 3231 Walnut Street, Philadelphia, PA, 19104, USA
| | - Bingzhi He
- Department of Materials Science and Engineering, University of Pennsylvania, 3231 Walnut Street, Philadelphia, PA, 19104, USA
| | - Alexander M Tucker
- Department of Surgery, Division of Neurosurgery, Center for Data Driven Discovery in Biomedicine, Children's Hospital of Philadelphia, 3401 Civic Center Boulevard, Philadelphia, PA, 19104, USA
- Department of Neurosurgery, Perelman School of Medicine at the University of Pennsylvania, 3400 Spruce Street, Philadelphia, PA, 19104, USA
| | - Ian Biluck
- Department of Surgery, Division of Neurosurgery, Center for Data Driven Discovery in Biomedicine, Children's Hospital of Philadelphia, 3401 Civic Center Boulevard, Philadelphia, PA, 19104, USA
| | - Thomas H Leung
- Department of Dermatology, Perelman School of Medicine, University of Pennsylvania, 421 Curie Boulevard, Philadelphia, PA, 19104, USA
| | - Thomas P Schaer
- Department of Clinical Studies, School of Veterinary Medicine, University of Pennsylvania, New Bolton Center, 382 West Street Road, Kennett Square, PA, 19348, USA
| | - Shu Yang
- Department of Materials Science and Engineering, University of Pennsylvania, 3231 Walnut Street, Philadelphia, PA, 19104, USA
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6
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Shi W, Xue H, Du T, Liu JL, Ling V, Wang Y, Ma Z, Gao ZH. Penetration enhancers strengthen tough hydrogel bioadhesion and modulate locoregional drug delivery. Biomater Sci 2024; 12:5620-5630. [PMID: 39370988 DOI: 10.1039/d4bm00807c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/08/2024]
Abstract
The human body possesses natural barriers, such as skin and mucosa, which limit the effective delivery of therapeutics and integration of medical devices to target tissues. Various strategies have been deployed to breach these barriers mechanically, chemically, or electronically. The development of various penetration enhancers (PEs) offers a promising solution due to their ability to increase tissue permeability using readily available reagents. However, existing PE-mediated delivery methods often rely on weak gel or liquid drug formulations, which are not ideal for sustained local delivery. Hydrogel adhesives that can seamlessly interface biological tissues with controlled drug delivery could potentially resolve these issues. Here, we demonstrate that tough adhesion between drug-laden hydrogels and biological tissue (e.g. skin and tumours) can lead to effective local delivery of drugs deep into targeted tissues by leveraging the enhanced tissue penetration mediated by PEs. The drug release profile of the hydrogel adhesives can be fine-tuned by further engineering the nanocomposite hydrogel matrix to elute chemotherapeutics from 2 weeks to 2 months. Using a 3D tumour spheroid model, we demonstrated that PEs increased the cancer-killing effectiveness of doxorubicin by facilitating its delivery into tumour microtissues. Therefore, the proposed tough bioadhesion and drug delivery strategy modulated by PEs holds promise as a platform technique to develop next-generation wearable and implantable devices for cancer management and regenerative medicine.
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Affiliation(s)
- Wenna Shi
- Department of Integrative Oncology, BC Cancer Research Institute, Vancouver, Canada.
- Department of Pharmacy, Shandong Cancer Hospital and Institute, Jinan, China
| | - Hui Xue
- Department of Experimental Medicine, BC Cancer Research Institute, Vancouver, Canada
| | - Tianwei Du
- Department of Integrative Oncology, BC Cancer Research Institute, Vancouver, Canada.
- School of Biomedical Engineering, University of British Columbia, Vancouver, Canada
| | - Jun-Li Liu
- Department of Medicine, McGill University Health Centre Research Institute, Montreal, Canada
| | - Victor Ling
- Department of Integrative Oncology, BC Cancer Research Institute, Vancouver, Canada.
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, Canada
| | - Yuzhuo Wang
- Department of Experimental Medicine, BC Cancer Research Institute, Vancouver, Canada
| | - Zhenwei Ma
- Department of Integrative Oncology, BC Cancer Research Institute, Vancouver, Canada.
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, Canada
| | - Zu-Hua Gao
- Department of Integrative Oncology, BC Cancer Research Institute, Vancouver, Canada.
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, Canada
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7
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Dhand AP, Davidson MD, Zlotnick HM, Kolibaba TJ, Killgore JP, Burdick JA. Additive manufacturing of highly entangled polymer networks. Science 2024; 385:566-572. [PMID: 39088628 PMCID: PMC11921614 DOI: 10.1126/science.adn6925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Accepted: 06/19/2024] [Indexed: 08/03/2024]
Abstract
Incorporation of polymer chain entanglements within a single network can synergistically improve stiffness and toughness, yet attaining such dense entanglements through vat photopolymerization additive manufacturing [e.g., digital light processing (DLP)] remains elusive. We report a facile strategy that combines light and dark polymerization to allow constituent polymer chains to densely entangle as they form within printed structures. This generalizable approach reaches high monomer conversion at room temperature without the need for additional stimuli, such as light or heat after printing, and enables additive manufacturing of highly entangled hydrogels and elastomers that exhibit fourfold- to sevenfold-higher extension energies in comparison to that of traditional DLP. We used this method to print high-resolution and multimaterial structures with features such as spatially programmed adhesion to wet tissues.
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Affiliation(s)
- Abhishek P Dhand
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Matthew D Davidson
- BioFrontiers Institute & Department of Chemical and Biological Engineering, University of Colorado, Boulder, CO 80303, USA
| | - Hannah M Zlotnick
- BioFrontiers Institute & Department of Chemical and Biological Engineering, University of Colorado, Boulder, CO 80303, USA
| | - Thomas J Kolibaba
- Applied Chemicals and Materials Division, National Institute of Standards and Technology, Boulder, CO 80305, USA
| | - Jason P Killgore
- Applied Chemicals and Materials Division, National Institute of Standards and Technology, Boulder, CO 80305, USA
| | - Jason A Burdick
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA 19104, USA
- BioFrontiers Institute & Department of Chemical and Biological Engineering, University of Colorado, Boulder, CO 80303, USA
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8
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Luo X, Tan H, Wen W. Recent Advances in Wearable Healthcare Devices: From Material to Application. Bioengineering (Basel) 2024; 11:358. [PMID: 38671780 PMCID: PMC11048539 DOI: 10.3390/bioengineering11040358] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Revised: 04/02/2024] [Accepted: 04/04/2024] [Indexed: 04/28/2024] Open
Abstract
In recent years, the proliferation of wearable healthcare devices has marked a revolutionary shift in the personal health monitoring and management paradigm. These devices, ranging from fitness trackers to advanced biosensors, have not only made healthcare more accessible, but have also transformed the way individuals engage with their health data. By continuously monitoring health signs, from physical-based to biochemical-based such as heart rate and blood glucose levels, wearable technology offers insights into human health, enabling a proactive rather than a reactive approach to healthcare. This shift towards personalized health monitoring empowers individuals with the knowledge and tools to make informed decisions about their lifestyle and medical care, potentially leading to the earlier detection of health issues and more tailored treatment plans. This review presents the fabrication methods of flexible wearable healthcare devices and their applications in medical care. The potential challenges and future prospectives are also discussed.
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Affiliation(s)
- Xiao Luo
- Department of Physics, The Hong Kong University of Science and Technology, Hong Kong 999077, China;
- HKUST Shenzhen-Hong Kong Collaborative Innovation Research Institute (SHCIRI), Futian, Shenzhen 518060, China
| | - Handong Tan
- Department of Individualized Interdisciplinary Program (Advanced Materials), The Hong Kong University of Science and Technology, Hong Kong 999077, China;
| | - Weijia Wen
- Department of Physics, The Hong Kong University of Science and Technology, Hong Kong 999077, China;
- HKUST Shenzhen-Hong Kong Collaborative Innovation Research Institute (SHCIRI), Futian, Shenzhen 518060, China
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9
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Al Enezy-Ulbrich MA, Kreuels K, Simonis M, Milvydaitė I, Reineke AT, Schemmer C, Gillner A, Pich A. Enhancing Adhesion of Fibrin-Based Hydrogel to Polythioether Polymer Surfaces. ACS APPLIED MATERIALS & INTERFACES 2024; 16:14371-14381. [PMID: 38445533 DOI: 10.1021/acsami.4c00620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/07/2024]
Abstract
The development of stable (bio)hybrid constructs composed of scaffolds and (bio)matrices is a major challenge in the field of tissue engineering. In the present work, the adhesion of fibrin-based hydrogels to the surface of polythioether-based polymers relevant to the 3D printing of polymer scaffolds produced by thiol-ene click chemistry was investigated. Adhesion properties were characterized by single-lap tensile shear testing. Both the sample preparation and the test method were optimized for the analysis of fibrin gel bonding to the polythioether surface. Our experimental results show that even without further modification, an adhesion between the fibrin hydrogel and polythioether is substantial, with an adhesion strength of 4.9 ± 1.0 kPa. To further improve the bonding, linear functional poly(N-vinylpyrrolidone-co-glycidyl methacrylate) (PVP-co-GMA) copolymers were used that are known for covalently binding to fibrin. The maximum adhesion strength in our study was found to be 18.4 ± 3.4 kPa. The pure PVP-co-GMA copolymers also demonstrate covalent binding to the thiol-ene-based polymers with a maximum adhesion strength of 32.2 ± 2.7 kPa. Therefore, compared to pure fibrin, the presence of copolymer coating both on the polythioether surface and in the fibrin gel led to a significant increase of the adhesion strength by a factor of 1.6.
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Affiliation(s)
- Miriam Aischa Al Enezy-Ulbrich
- Institute for Technical and Macromolecular Chemistry, Functional and Interactive Polymers, RWTH Aachen University, Worringerweg 1, 52074 Aachen, Germany
- DWI - Leibniz Institute for Interactive Materials, RWTH Aachen University, Forckenbeckstraße 50, 52074 Aachen, Germany
| | - Klaus Kreuels
- Chair for Laser Technology LLT, RWTH Aachen University, Steinbachstraße 15, 52074 Aachen, Germany
| | - Marc Simonis
- Institute for Technical and Macromolecular Chemistry, Functional and Interactive Polymers, RWTH Aachen University, Worringerweg 1, 52074 Aachen, Germany
- DWI - Leibniz Institute for Interactive Materials, RWTH Aachen University, Forckenbeckstraße 50, 52074 Aachen, Germany
| | - Indrė Milvydaitė
- Institute for Technical and Macromolecular Chemistry, Functional and Interactive Polymers, RWTH Aachen University, Worringerweg 1, 52074 Aachen, Germany
- DWI - Leibniz Institute for Interactive Materials, RWTH Aachen University, Forckenbeckstraße 50, 52074 Aachen, Germany
- Chair for Laser Technology LLT, RWTH Aachen University, Steinbachstraße 15, 52074 Aachen, Germany
| | - Anna Theresa Reineke
- Institute for Technical and Macromolecular Chemistry, Functional and Interactive Polymers, RWTH Aachen University, Worringerweg 1, 52074 Aachen, Germany
- DWI - Leibniz Institute for Interactive Materials, RWTH Aachen University, Forckenbeckstraße 50, 52074 Aachen, Germany
- Chair for Laser Technology LLT, RWTH Aachen University, Steinbachstraße 15, 52074 Aachen, Germany
| | - Carina Schemmer
- Chair for Laser Technology LLT, RWTH Aachen University, Steinbachstraße 15, 52074 Aachen, Germany
| | - Arnold Gillner
- Chair for Laser Technology LLT, RWTH Aachen University, Steinbachstraße 15, 52074 Aachen, Germany
- Fraunhofer-Institute for Laser Technology ILT, Steinbachstraße 15, 52074 Aachen, Germany
| | - Andrij Pich
- Institute for Technical and Macromolecular Chemistry, Functional and Interactive Polymers, RWTH Aachen University, Worringerweg 1, 52074 Aachen, Germany
- DWI - Leibniz Institute for Interactive Materials, RWTH Aachen University, Forckenbeckstraße 50, 52074 Aachen, Germany
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Freedman BR, Cintron Cruz JA, Kwon P, Lee M, Jeffers HM, Kent D, Wu KC, Weaver JC, Mooney DJ. Instant tough adhesion of polymer networks. Proc Natl Acad Sci U S A 2024; 121:e2304643121. [PMID: 38377210 PMCID: PMC10907230 DOI: 10.1073/pnas.2304643121] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 01/09/2024] [Indexed: 02/22/2024] Open
Abstract
Generating strong rapid adhesion between hydrogels has the potential to advance the capabilities of modern medicine and surgery. Current hydrogel adhesion technologies rely primarily on liquid-based diffusion mechanisms and the formation of covalent bonds, requiring prolonged time to generate adhesion. Here, we present a simple and versatile strategy using dry chitosan polymer films to generate instant adhesion between hydrogel-hydrogel and hydrogel-elastomer surfaces. Using this approach we can achieve extremely high adhesive energies (>3,000 J/m2), which are governed by pH change and non-covalent interactions including H-bonding, Van der Waals forces, and bridging polymer entanglement. Potential examples of biomedical applications are presented, including local tissue cooling, vascular sealing, prevention of surgical adhesions, and prevention of hydrogel dehydration. We expect these findings and the simplicity of this approach to have broad implications for adhesion strategies and hydrogel design.
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Affiliation(s)
- Benjamin R. Freedman
- Department of Bioengineering, John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA02139
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA02215
- Department of Orthopaedic Surgery, Beth Israel Deaconess Medical Center, Boston, MA02215
| | - Juan A. Cintron Cruz
- Department of Bioengineering, John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA02139
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA02215
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA02139
| | - Phoebe Kwon
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA02215
| | - Matthew Lee
- Department of Bioengineering, John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA02139
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA02215
- Department of Biomedical Engineering, Rice University, Houston, TX77005
| | - Haley M. Jeffers
- Department of Bioengineering, John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA02139
- Department of Orthopaedic Surgery, Beth Israel Deaconess Medical Center, Boston, MA02215
| | - Daniel Kent
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA02215
- Department of Orthopaedic Surgery, Beth Israel Deaconess Medical Center, Boston, MA02215
- Department of General Surgery, Beth Israel Deaconess Medical Center, Boston, MA02215
| | - Kyle C. Wu
- Department of Orthopaedic Surgery, Beth Israel Deaconess Medical Center, Boston, MA02215
- Harvard Medical School, Boston, MA02215
- Department of Neurosurgery, Brigham and Women’s Hospital, Boston, MA02215
| | - James C. Weaver
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA02215
| | - David J. Mooney
- Department of Bioengineering, John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA02139
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA02215
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