1
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Bhattacharjee B, Tabbasum K, Mukherjee R, Garg P, Haldar J. Functionalized chitosan based antibacterial hydrogel sealant for simultaneous infection eradication and tissue closure in ocular injuries. Int J Biol Macromol 2024; 273:132838. [PMID: 38838886 DOI: 10.1016/j.ijbiomac.2024.132838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Revised: 04/21/2024] [Accepted: 05/30/2024] [Indexed: 06/07/2024]
Abstract
Management of infections at ocular injury often requires prolonged and high dose of antibiotic, which is associated with challenges of antibiotic resistance and bacterial biofilm formation. Tissue glues are commonly used for repairing ocular tissue defects and tissue regeneration, but they are ineffective in curing infection. There is a critical need for antibacterial ocular bio-adhesives capable of both curing infection and aiding wound closure. Herein, we present the development of an imine crosslinked N-(2-hydroxypropyl)-3-trimethylammonium chitosan chloride (HTCC)‑silver chloride nanocomposites (QAm1-Agx) and poly-dextran aldehyde (PDA) based bactericidal sealant (BacSeal). BacSeal exhibited potent bactericidal activity against a broad spectrum of bacteria including their planktonic and stationary phase within a short duration of 4 h. BacSeal effectively reduced biofilm-embedded MRSA and Pseudomonas aeruginosa by ∼99.99 %. In ex-vivo human cornea infection model, BacSeal displayed ∼99 % reduction of ocular infection. Furthermore, the hydrogel exhibited excellent sealing properties by maintaining ocular pressure up to 75 mm-Hg when applied to human corneal trauma. Cytotoxicity assessment and hydrogel-treated human cornea with a retained tissue structure, indicate its non-toxic nature. Collectively, BacSeal represents a promising candidate for the development of an ocular sealant that can effectively mitigate infections and may assist in tissue regeneration by sealing ocular wounds.
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Affiliation(s)
- Brinta Bhattacharjee
- Antimicrobial Research Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Bengaluru 560064, Karnataka, India
| | - Khatija Tabbasum
- L V Prasad Eye Institute, Kallam Anji Reddy Campus, L V Prasad Marg, Banjara Hills, Telangana 500034, Hyderabad, India
| | - Riya Mukherjee
- Antimicrobial Research Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Bengaluru 560064, Karnataka, India
| | - Prashant Garg
- L V Prasad Eye Institute, Kallam Anji Reddy Campus, L V Prasad Marg, Banjara Hills, Telangana 500034, Hyderabad, India
| | - Jayanta Haldar
- Antimicrobial Research Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Bengaluru 560064, Karnataka, India; School of Advanced Materials, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Bengaluru 560064, Karnataka, India.
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2
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Xu P, Chen P, Sun Y, Nuliqiman M, Zhou Y, Cao J, Yu S, Huang J, Ye J. A novel injectable thermo/photo dual-crosslinking hydrogel based on modified chitosan for fast sealing open globe injury. Carbohydr Polym 2024; 331:121854. [PMID: 38388052 DOI: 10.1016/j.carbpol.2024.121854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 01/18/2024] [Accepted: 01/20/2024] [Indexed: 02/24/2024]
Abstract
Open globe injuries (OGIs) demand immediate attention to prevent further complications and improve vision prognosis. Herein, we developed a thermo/photo dual-crosslinking injectable hydrogel, HBC_m_Arg, for rapidly sealing OGIs in emergency ophthalmic cases. HBC_m_Arg was prepared with arginine and methacrylic anhydride modified hydroxybutyl chitosan (HBC). HBC_m_Arg was initially in liquid form at 25 °C, enabling easy injection at the injury site. After reaching the ocular surface temperature, it underwent reversible heat-induced gelation to achieve in situ transformation. Further, HBC_m_Arg was capable of rapid photocrosslinking under UV light, forming a dual network structure to bolster mechanical strength, thereby facilitating effective OGI closure. Biocompatibility assessments, including in vitro studies with three ocular cell types and in vivo experiments on rabbit eyes, confirmed the safety profile of HBC_m_Arg. Ex vivo and in vivo burst pressure tests demonstrated the hydrogel's ability to promptly restore intraocular pressure and withstand elevated pressures, underscoring its potential for OGI stabilization. Additionally, the suitable degradation of HBC_m_Arg within ocular tissues, coupled with its stability in ex vivo assessments, presented a delicate balance between stability and biodegradability. In conclusion, HBC_m_Arg holds promise for improving emergency ophthalmic care by providing a rapid, effective, and safe way to seal OGIs in critical situations.
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Affiliation(s)
- Peifang Xu
- Eye Center, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang Provincial Key Laboratory of Ophthalmology, Zhejiang Provincial Clinical Research Center for Eye Diseases, Zhejiang Provincial Engineering Institute on Eye Diseases, Hangzhou, Zhejiang, China
| | - Pengjie Chen
- Eye Center, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang Provincial Key Laboratory of Ophthalmology, Zhejiang Provincial Clinical Research Center for Eye Diseases, Zhejiang Provincial Engineering Institute on Eye Diseases, Hangzhou, Zhejiang, China
| | - Yiming Sun
- Eye Center, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang Provincial Key Laboratory of Ophthalmology, Zhejiang Provincial Clinical Research Center for Eye Diseases, Zhejiang Provincial Engineering Institute on Eye Diseases, Hangzhou, Zhejiang, China
| | - Maimaiti Nuliqiman
- Eye Center, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang Provincial Key Laboratory of Ophthalmology, Zhejiang Provincial Clinical Research Center for Eye Diseases, Zhejiang Provincial Engineering Institute on Eye Diseases, Hangzhou, Zhejiang, China
| | - Yifan Zhou
- Eye Center, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang Provincial Key Laboratory of Ophthalmology, Zhejiang Provincial Clinical Research Center for Eye Diseases, Zhejiang Provincial Engineering Institute on Eye Diseases, Hangzhou, Zhejiang, China
| | - Jing Cao
- Eye Center, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang Provincial Key Laboratory of Ophthalmology, Zhejiang Provincial Clinical Research Center for Eye Diseases, Zhejiang Provincial Engineering Institute on Eye Diseases, Hangzhou, Zhejiang, China
| | - Shan Yu
- Institute of Biological and Medical Engineering, Guangdong Academy of Sciences, Guangzhou, China
| | - Jun Huang
- Institute of Biological and Medical Engineering, Guangdong Academy of Sciences, Guangzhou, China.
| | - Juan Ye
- Eye Center, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang Provincial Key Laboratory of Ophthalmology, Zhejiang Provincial Clinical Research Center for Eye Diseases, Zhejiang Provincial Engineering Institute on Eye Diseases, Hangzhou, Zhejiang, China.
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3
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Sokol JT, Rossin EJ. Ophthalmic Trauma-Related Instruments-Critical Tools for Winning the Case. Int Ophthalmol Clin 2024; 64:187-207. [PMID: 38525991 DOI: 10.1097/iio.0000000000000486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/26/2024]
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4
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Xue N, Liu P, Zhao W, Zhou Z, Zhang L, Huang R, Liu R, Fathi A, Duan JA, Chen J, Wang Y. A Horn Peptide-Thermoresponsive Hydrogel for Angiogenesis and Bone Regeneration. Adv Healthc Mater 2024:e2304400. [PMID: 38551206 DOI: 10.1002/adhm.202304400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 03/27/2024] [Indexed: 04/09/2024]
Abstract
The management of critical-sized bone defects presents a formidable clinical challenge, especially given the increasing incidence of bone diseases in the aging population. Consequently, there is an increased demand for minimally invasive bone repair materials that can effectively address this challenge, particularly in outpatient settings. In this study, the goal is to develop an injectable and biodegradable biomaterial that adheres to and fills bone-defect sites to support bone regeneration. The osteogenic and angiogenic activities of animal horn peptides are investigated by incorporating them into biologically active moieties, in combination with a novel thermosensitive hydrogel. The resulting thermosensitive hydrogel exhibited essential biological functionalities, allowing precise modulation of its physical and chemical properties. Notably, the hydrogel incorporating the horn peptide rapidly filled the bone defect site, promoting both angiogenesis and bone induction. Consequently, this approach significantly accelerates new bone regeneration. In summary, the findings of this study present a promising, minimally invasive solution for addressing critical-sized bone defects.
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Affiliation(s)
- Nannan Xue
- Jiangsu Provincial Engineering Research Center of TCM External Medication Development and Application, Nanjing University of Chinese Medicine, Nanjing, 210023, P. R. China
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Nanjing, 210023, P. R. China
- International Cooperative Joint Laboratory of Animal-Derived Chinese Medicine and Functional Peptides, Nanjing, 210023, P. R. China
| | - Pei Liu
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Nanjing, 210023, P. R. China
- International Cooperative Joint Laboratory of Animal-Derived Chinese Medicine and Functional Peptides, Nanjing, 210023, P. R. China
| | - Wenjian Zhao
- Jiangsu Provincial Engineering Research Center of TCM External Medication Development and Application, Nanjing University of Chinese Medicine, Nanjing, 210023, P. R. China
| | - Ziyi Zhou
- Jiangsu Provincial Engineering Research Center of TCM External Medication Development and Application, Nanjing University of Chinese Medicine, Nanjing, 210023, P. R. China
| | - Lixiang Zhang
- Jiangsu Provincial Engineering Research Center of TCM External Medication Development and Application, Nanjing University of Chinese Medicine, Nanjing, 210023, P. R. China
| | - Rizhong Huang
- Jiangsu Provincial Engineering Research Center of TCM External Medication Development and Application, Nanjing University of Chinese Medicine, Nanjing, 210023, P. R. China
| | - Rui Liu
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Nanjing, 210023, P. R. China
- International Cooperative Joint Laboratory of Animal-Derived Chinese Medicine and Functional Peptides, Nanjing, 210023, P. R. China
| | - Ali Fathi
- School of Chemical and Biomolecular Engineering, University of Sydney, Sydney, NSW, 2006, Australia
- Tetratherix Technology Pty Ltd, Sydney, NSW, 2000, Australia
| | - Jin-Ao Duan
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Nanjing, 210023, P. R. China
- International Cooperative Joint Laboratory of Animal-Derived Chinese Medicine and Functional Peptides, Nanjing, 210023, P. R. China
| | - Jun Chen
- Jiangsu Provincial Engineering Research Center of TCM External Medication Development and Application, Nanjing University of Chinese Medicine, Nanjing, 210023, P. R. China
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Nanjing, 210023, P. R. China
| | - Yiwei Wang
- Jiangsu Provincial Engineering Research Center of TCM External Medication Development and Application, Nanjing University of Chinese Medicine, Nanjing, 210023, P. R. China
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Nanjing, 210023, P. R. China
- International Cooperative Joint Laboratory of Animal-Derived Chinese Medicine and Functional Peptides, Nanjing, 210023, P. R. China
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5
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Wang Q, Zhao X, Yu F, Fang PH, Liu L, Du X, Li W, He D, Bai Y, Li S, Yuan J. Photocurable and Temperature-Sensitive Bioadhesive Hydrogels for Sutureless Sealing of Full-Thickness Corneal Wounds. SMALL METHODS 2024; 8:e2300996. [PMID: 37997553 DOI: 10.1002/smtd.202300996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 09/19/2023] [Indexed: 11/25/2023]
Abstract
Penetrating corneal wounds can cause severe vision impairment and require prompt intervention to restore globe integrity and minimize the risk of infection. Tissue adhesives have emerged as a promising alternative to suturing for mitigating postoperative complications. However, conventional water-soluble adhesives suffer formidable challenges in sealing penetrating corneal wounds due to dilution or loss in a moist environment. Inspired by the robust adhesion of mussels in aquatic conditions, an injectable photocurable bioadhesive hydrogel (referred to as F20HD5) composed of polyether F127 diacrylate and dopamine-modified hyaluronic acid methacrylate is developed for sutureless closure of corneal full-thickness wounds. F20HD5 exhibits high transparency, wound-sealing ability, proper viscosity, biodegradability, and excellent biocompatibility. It allows in situ cross-linking via visible light, thereby providing sufficient mechanical strength and adhesiveness. In vivo, the adhesive hydrogel effectively closed penetrating linear corneal incisions and corneal injuries with minimal tissue loss in rabbits. During the 56-day follow-up, the hydrogel facilitates the repair of the injured corneas, resulting in more symmetrical curvatures and less scarring in distinction to the untreated control. Thus, bioinspired hydrogel holds promise as an effective adhesive for sealing full-thickness corneal wounds.
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Affiliation(s)
- Qian Wang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, 510623, China
| | - Xuan Zhao
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, 510623, China
| | - Fei Yu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, 510623, China
| | - Po-Han Fang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, 510623, China
| | - Liu Liu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, 510623, China
| | - Xinyue Du
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, 510623, China
| | - Weihua Li
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, 510623, China
| | - Dalian He
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, 510623, China
| | - Ying Bai
- Guangdong Engineering Technology Research Centre for Functional Biomaterials, School of Materials Science and Engineering, SunYat-sen University, Guangzhou, 510006, China
| | - Saiqun Li
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, 510623, China
| | - Jin Yuan
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, 510623, China
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6
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Gu R, Zhou H, Zhang Z, Lv Y, Pan Y, Li Q, Shi C, Wang Y, Wei L. Research progress related to thermosensitive hydrogel dressings in wound healing: a review. NANOSCALE ADVANCES 2023; 5:6017-6037. [PMID: 37941954 PMCID: PMC10629053 DOI: 10.1039/d3na00407d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Accepted: 07/27/2023] [Indexed: 11/10/2023]
Abstract
Wound healing is a dynamic and complex process in which the microenvironment at the wound site plays an important role. As a common material for wound healing, dressings accelerate wound healing and prevent external wound infections. Hydrogels have become a hot topic in wound-dressing research because of their high water content, good biocompatibility, and adjustable physical and chemical properties. Intelligent hydrogel dressings have attracted considerable attention because of their excellent environmental responsiveness. As smart polymer hydrogels, thermosensitive hydrogels can respond to small temperature changes in the environment, and their special properties make them superior to other hydrogels. This review mainly focuses on the research progress in thermosensitive intelligent hydrogel dressings for wound healing. Polymers suitable for hydrogel formation and the appropriate molecular design of the hydrogel network to achieve thermosensitive hydrogel properties are discussed, followed by the application of thermosensitive hydrogels as wound dressings. We also discuss the future perspectives of thermosensitive hydrogels as wound dressings and provide systematic theoretical support for wound healing.
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Affiliation(s)
- Ruting Gu
- Department of Thoracic Surgery, The Affiliated Hospital of Qingdao University Qingdao 266000 China
| | - Haiqing Zhou
- Department of Thoracic Surgery, The Affiliated Hospital of Qingdao University Qingdao 266000 China
| | - Zirui Zhang
- Emergency Departments, The Affiliated Hospital of Qingdao University Qingdao 266000 China
| | - Yun Lv
- School of Nursing, Qingdao University Qingdao 266000 China
| | - Yueshuai Pan
- Department of Critical Care Medicine, The Affiliated Hospital of Qingdao University Qingdao 266000 China
| | - Qianqian Li
- Ophthalmology Department, The Affiliated Hospital of Qingdao University Qingdao 266000 China
| | - Changfang Shi
- Department of Spinal Surgery, The Affiliated Hospital of Qingdao University Qingdao 266000 China
| | - Yanhui Wang
- Department of Oral Implantology, The Affiliated Hospital of Qingdao University Qingdao 266000 China
| | - Lili Wei
- Office of the Dean, The Affiliated Hospital of Qingdao University Qingdao 266000 China
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7
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Kong X, Jia Y, Wang H, Li R, Li C, Cheng S, Chen T, Mai Y, Nie Y, Deng Y, Xie Z, Liu Y. Effective Treatment of Haemophilus influenzae-Induced Bacterial Conjunctivitis by a Bioadhesive Nanoparticle Reticulate Structure. ACS APPLIED MATERIALS & INTERFACES 2023; 15:22892-22902. [PMID: 37154428 DOI: 10.1021/acsami.3c01308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Ocular formulations should provide an effective antibiotic concentration at the site of infection to treat bacterial eye infections. However, tears and frequent blinking accelerate the drug clearance rate and limit drug residence time on the ocular surface. This study describes a biological adhesion reticulate structure (BNP/CA-PEG) consisting of antibiotic-loaded bioadhesion nanoparticles (BNP/CA), with an average 500-600 nm diameter, and eight-arm NH2-PEG-NH2 for local and extended ocular drug delivery. This retention-prolonging effect is a function of the Schiff base reaction between groups on the surface of BNP and amidogen on PEG. BNP/CA-PEG showed significantly higher adhesion properties and better treatment efficacy in an ocular rat model with conjunctivitis in comparison to non-adhesive nanoparticles, BNP, or free antibiotics. Both in vivo safety experiment and in vitro cytotoxicity test verified the biocompatibility and biosafety of the biological adhesion reticulate structure, indicating a promising translational prospect for further clinical use.
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Affiliation(s)
- Xiaohan Kong
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China
| | - Yizhen Jia
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China
| | - Han Wang
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China
| | - Rui Li
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China
| | - Chujie Li
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China
| | - Shihong Cheng
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China
| | - Tian Chen
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China
| | - Yang Mai
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China
| | - Yichu Nie
- Clinical Research Institute, The First People's Hospital of Foshan, Foshan 528000, China
| | - Yang Deng
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China
| | - Zhiyong Xie
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Guangzhou 510275, China
| | - Yang Liu
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Guangzhou 510275, China
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8
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Gholizadeh H, Landh E, Silva DM, Granata A, Traini D, Young P, Fathi A, Maleknia S, Abrams T, Dehghani F, Xin Ong H. In vitro and in vivo applications of a universal and synthetic thermo-responsive drug delivery hydrogel platform. Int J Pharm 2023; 635:122777. [PMID: 36842518 DOI: 10.1016/j.ijpharm.2023.122777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 02/19/2023] [Accepted: 02/21/2023] [Indexed: 02/28/2023]
Abstract
A synthetic and thermo-responsive polymer, poly(N-isopropylacrylamide)-co-(polylactide/2-hydroxy methacrylate)-co-(oligo (ethylene glycol)), is used to formulate a universal carrier platform for sustained drug release. The enabling carrier, denoted as TP, is prepared by dissolving the polymer in an aqueous solution at a relatively neutral pH. A wide range of therapeutic moieties can be incorporated without the need for the addition of surfactants, organic solvents, and other reagents to the carrier system. The resulting solution is flowable through fine gauge needle, allowing accurate administration of TP to the target site. After injection, TP carrier undergoes a coil to globe phase transition to form a hydrogel matrix at the site. The benign nature of the polymer carrier and its physical gelation process are essential to preserve the biological activity of the encapsulated compounds while the adhesive hydrogel nature of the matrix allows sustained elusion and controlled delivery of the incorporated therapeutics. The TP carrier system has been shown to be non-toxic and elicits a minimal inflammatory response in multiple in vitro studies. These findings suggest the suitability of TP as an enabling carrier of therapeutics for localized and sustained drug delivery. To confirm this hypothesis, the capabilities of TP to encapsulate and effectively deliver multiple therapeutics of different physicochemical characteristics was evaluated. Specifically, a broad range of compounds were tested, including ciprofloxacin HCl, tumor necrosis factor-alpha (TNF-α), transforming growth factor beta 1 (TGF-β1), and recombinant human bone morphogenetic protein 2 (BMP2). In vitro studies confirmed that TP carrier is able to control the release of the encapsulated drugs over an extended period of time and mitigate their burst release regardless of the compounds' physiochemical properties for the majority of the loaded therapeutics. Importantly, in vitro and in vivo animal studies showed that the released drugs from the TP hydrogel matrix remained potent and bioactive, confirming the high potential of the TP polymer system as an enabling carrier.
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Affiliation(s)
- Hanieh Gholizadeh
- Respiratory Technology, Woolcock Institute of Medical Research, Sydney, NSW, Australia; Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, NSW, Australia
| | - Emelie Landh
- Respiratory Technology, Woolcock Institute of Medical Research, Sydney, NSW, Australia
| | - Dina M Silva
- Respiratory Technology, Woolcock Institute of Medical Research, Sydney, NSW, Australia
| | - Antonella Granata
- Respiratory Technology, Woolcock Institute of Medical Research, Sydney, NSW, Australia
| | - Daniela Traini
- Respiratory Technology, Woolcock Institute of Medical Research, Sydney, NSW, Australia; Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, NSW, Australia
| | - Paul Young
- Department of Marketing, Macquarie Business School, Macquarie University, Sydney, NSW, Australia
| | - Ali Fathi
- Tetratherix Technology Pty Ltd, Sydney, NSW, Australia
| | | | | | - Fariba Dehghani
- School of Chemical and Biomolecular Engineering, University of Sydney, Sydney, Australia
| | - Hui Xin Ong
- Respiratory Technology, Woolcock Institute of Medical Research, Sydney, NSW, Australia; Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, NSW, Australia.
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9
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Wu X, Wang R, Chen WC, Liu B, Yang Q, Ji S, Huo Y. Design, synthesis and photophysical properties of a (quinolin-3-yl)methanone-based thermally activated delayed fluorescence emitter. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2023.135408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/28/2023]
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10
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Huang W, Wu J, Huang Z, Zhang D, Chen F, Liu C. A self-gelling starch-based sponge for hemostasis. J Mater Chem B 2023; 11:1331-1343. [PMID: 36655482 DOI: 10.1039/d2tb02224a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Uncontrolled bleeding remains one of the direct causes of high mortality. There is an urgent need for developing emergency hemostats capable of coping with uncontrolled bleeding. The commercial starch-based hemostatic powder (PerClot®) requires compression during application, which limits its application in hemostasis of irregular and non-compressed wounds. Herein, a boronic acid-modified thiol starch sponge (St-SP sponge) with self-gelling properties was developed for hemorrhage control. The results show that the St-SP sponge could quickly absorb blood, self-gel and self-heal to seal the bleeding sites. In addition, the St-SP sponge can rapidly initiate the coagulation cascade and promote the adhesion and aggregation of erythrocytes and platelets. The St-SP sponge exhibited significantly improved in vitro and in vivo hemostatic abilities as compared with PerClot. Notably, the St-SP sponge attained complete hemostasis without any compression in 61.5 s and made a great difference compared to PerClot (169 s) for the irregular wound constructed on the rabbit liver. In addition, the St-SP sponge had good hemocompatibility and cytocompatibility. It turns out that the newly developed St-SP sponge is a promising material for first-aid hemostasis of irregular and non-compressed wounds.
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Affiliation(s)
- Wenjie Huang
- Engineering Research Center for Biomedical Materials of Ministry of Education, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Juan Wu
- Engineering Research Center for Biomedical Materials of Ministry of Education, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Zhenhua Huang
- Engineering Research Center for Biomedical Materials of Ministry of Education, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Dong Zhang
- Engineering Research Center for Biomedical Materials of Ministry of Education, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Fangping Chen
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China. .,Engineering Research Center for Biomedical Materials of Ministry of Education, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Changsheng Liu
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China. .,Engineering Research Center for Biomedical Materials of Ministry of Education, East China University of Science and Technology, Shanghai 200237, P. R. China
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11
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Calder D, Fathi A, Oveissi F, Maleknia S, Abrams T, Wang Y, Maitz J, Tsai KHY, Maitz P, Chrzanowski W, Canoy I, Menon VA, Lee K, Ahern BJ, Lean NE, Silva DM, Young PM, Traini D, Ong HX, Mahmoud RS, Montazerian H, Khademhosseini A, Dehghani F, Dehghani F. Thermoresponsive and Injectable Hydrogel for Tissue Agnostic Regeneration. Adv Healthc Mater 2022; 11:e2201714. [PMID: 36148581 DOI: 10.1002/adhm.202201714] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 09/16/2022] [Indexed: 01/28/2023]
Abstract
Injectable hydrogels can support the body's innate healing capability by providing a temporary matrix for host cell ingrowth and neovascularization. The clinical adoption of current injectable systems remains low due to their cumbersome preparation requirements, device malfunction, product dislodgment during administration, and uncontrolled biological responses at the treatment site. To address these challenges, a fully synthetic and ready-to-use injectable biomaterial is engineered that forms an adhesive hydrogel that remains at the administration site regardless of defect anatomy. The product elicits a negligible local inflammatory response and fully resorbs into nontoxic components with minimal impact on internal organs. Preclinical animal studies confirm that the engineered hydrogel upregulates the regeneration of both soft and hard tissues by providing a temporary matrix to support host cell ingrowth and neovascularization. In a pilot clinical trial, the engineered hydrogel is successfully administered to a socket site post tooth extraction and forms adhesive hydrogel that stabilizes blood clot and supports soft and hard tissue regeneration. Accordingly, this injectable hydrogel exhibits high therapeutic potential and can be adopted to address multiple unmet needs in different clinical settings.
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Affiliation(s)
- Dax Calder
- School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, NSW, 2006, Australia.,Faculty of Medicine and Health, Nano Institute, The University of Sydney, Sydney, NSW, 2006, Australia.,Faculty of Health and Medical Sciences, School of Biomedical Sciences, University of Western Australia, Perth, WA, 6009, Australia
| | - Ali Fathi
- School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, NSW, 2006, Australia.,Tetratherix, Sydney, NSW, 2015, Australia
| | - Farshad Oveissi
- School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, NSW, 2006, Australia
| | | | | | - Yiwei Wang
- Burns and Reconstructive Surgery Research Group, ANZAC Research Institute, Concord, NSW, 2139, Australia
| | - Joanneke Maitz
- Burns and Reconstructive Surgery Research Group, ANZAC Research Institute, Concord, NSW, 2139, Australia
| | - Kevin Hung-Yueh Tsai
- Burns and Reconstructive Surgery Research Group, ANZAC Research Institute, Concord, NSW, 2139, Australia
| | - Peter Maitz
- Burns and Reconstructive Surgery Research Group, ANZAC Research Institute, Concord, NSW, 2139, Australia
| | - Wojtek Chrzanowski
- Faculty of Medicine and Health, Nano Institute, The University of Sydney, Sydney, NSW, 2006, Australia.,Faculty of Health and Medical Sciences, School of Biomedical Sciences, University of Western Australia, Perth, WA, 6009, Australia
| | - Ivan Canoy
- Anatomical Pathology, NSW Health Pathology, Concord Repatriation General Hospital, Concord, NSW, 2139, Australia
| | - Vivek Ashoka Menon
- Anatomical Pathology, NSW Health Pathology, Concord Repatriation General Hospital, Concord, NSW, 2139, Australia
| | - Kenneth Lee
- Anatomical Pathology, NSW Health Pathology, Concord Repatriation General Hospital, Concord, NSW, 2139, Australia.,School of Medicine, University of Sydney, Sydney, NSW, 2006, Australia
| | - Benjamin J Ahern
- School of Veterinary Science, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Natasha E Lean
- School of Veterinary Science, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Dina M Silva
- Macquarie Medical School, Faculty of Medicine and Health, Macquarie University & Woolcock Institute of Medical Research, The University of Sydney, Glebe, NSW, 2037, Australia.,Ab Initio Pharma, Camperdown, NSW, 2050, Australia
| | - Paul M Young
- Macquarie Medical School, Faculty of Medicine and Health, Macquarie University & Woolcock Institute of Medical Research, The University of Sydney, Glebe, NSW, 2037, Australia.,Ab Initio Pharma, Camperdown, NSW, 2050, Australia
| | - Daniela Traini
- Macquarie Medical School, Faculty of Medicine and Health, Macquarie University & Woolcock Institute of Medical Research, The University of Sydney, Glebe, NSW, 2037, Australia.,Ab Initio Pharma, Camperdown, NSW, 2050, Australia
| | - Hui Xin Ong
- Macquarie Medical School, Faculty of Medicine and Health, Macquarie University & Woolcock Institute of Medical Research, The University of Sydney, Glebe, NSW, 2037, Australia.,Ab Initio Pharma, Camperdown, NSW, 2050, Australia
| | | | - Hossein Montazerian
- Terasaki Institute for Biomedical Innovation, Los Angeles, CA, 90024, USA.,Department of Bioengineering, University of California, Los Angeles, CA, 90095, USA.,California NanoSystems Institute (CNSI), University of California, Los Angeles, CA, 90095, USA
| | - Ali Khademhosseini
- Terasaki Institute for Biomedical Innovation, Los Angeles, CA, 90024, USA
| | - Fariba Dehghani
- School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Fariba Dehghani
- School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, NSW, 2006, Australia
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12
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Montazerian H, Davoodi E, Baidya A, Badv M, Haghniaz R, Dalili A, Milani AS, Hoorfar M, Annabi N, Khademhosseini A, Weiss PS. Bio-macromolecular design roadmap towards tough bioadhesives. Chem Soc Rev 2022; 51:9127-9173. [PMID: 36269075 PMCID: PMC9810209 DOI: 10.1039/d2cs00618a] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Emerging sutureless wound-closure techniques have led to paradigm shifts in wound management. State-of-the-art biomaterials offer biocompatible and biodegradable platforms enabling high cohesion (toughness) and adhesion for rapid bleeding control as well as robust attachment of implantable devices. Tough bioadhesion stems from the synergistic contributions of cohesive and adhesive interactions. This Review provides a biomacromolecular design roadmap for the development of tough adhesive surgical sealants. We discuss a library of materials and methods to introduce toughness and adhesion to biomaterials. Intrinsically tough and elastic polymers are leveraged primarily by introducing strong but dynamic inter- and intramolecular interactions either through polymer chain design or using crosslink regulating additives. In addition, many efforts have been made to promote underwater adhesion via covalent/noncovalent bonds, or through micro/macro-interlock mechanisms at the tissue interfaces. The materials settings and functional additives for this purpose and the related characterization methods are reviewed. Measurements and reporting needs for fair comparisons of different materials and their properties are discussed. Finally, future directions and further research opportunities for developing tough bioadhesive surgical sealants are highlighted.
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Affiliation(s)
- Hossein Montazerian
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, California 90095, USA.
- California NanoSystems Institute, University of California, Los Angeles, Los Angeles, California 90095, USA
- Terasaki Institute for Biomedical Innovation, Los Angeles, Los Angeles, California 90024, USA.
| | - Elham Davoodi
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, California 90095, USA.
- California NanoSystems Institute, University of California, Los Angeles, Los Angeles, California 90095, USA
- Terasaki Institute for Biomedical Innovation, Los Angeles, Los Angeles, California 90024, USA.
- Multi-Scale Additive Manufacturing Lab, Mechanical and Mechatronics Engineering Department, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Avijit Baidya
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, Los Angeles, California 90095, USA.
| | - Maryam Badv
- California NanoSystems Institute, University of California, Los Angeles, Los Angeles, California 90095, USA
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095, USA
- Department of Biomedical Engineering, Schulich School of Engineering, University of Calgary, Calgary, Alberta T2N 1N4, Canada
| | - Reihaneh Haghniaz
- Terasaki Institute for Biomedical Innovation, Los Angeles, Los Angeles, California 90024, USA.
| | - Arash Dalili
- School of Engineering, University of British Columbia, Kelowna, British Columbia V1V 1V7, Canada
| | - Abbas S Milani
- School of Engineering, University of British Columbia, Kelowna, British Columbia V1V 1V7, Canada
| | - Mina Hoorfar
- School of Engineering, University of British Columbia, Kelowna, British Columbia V1V 1V7, Canada
- School of Engineering and Computer Science, University of Victoria, Victoria, British Columbia V8P 3E6, Canada
| | - Nasim Annabi
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, California 90095, USA.
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, Los Angeles, California 90095, USA.
| | - Ali Khademhosseini
- Terasaki Institute for Biomedical Innovation, Los Angeles, Los Angeles, California 90024, USA.
| | - Paul S Weiss
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, California 90095, USA.
- California NanoSystems Institute, University of California, Los Angeles, Los Angeles, California 90095, USA
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095, USA
- Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, California 90095, USA
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13
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All-small-molecule supramolecular hydrogels assembled from guanosine 5'-monophosphate disodium salt and tobramycin for the treatment of bacterial keratitis. Bioact Mater 2022; 16:293-300. [PMID: 35386321 PMCID: PMC8965694 DOI: 10.1016/j.bioactmat.2021.12.024] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 12/16/2021] [Accepted: 12/21/2021] [Indexed: 11/26/2022] Open
Abstract
Bacterial keratitis is the most common corneal infection which may lead to blindness, and seriously threatened the human visual health worldwide. Clinical treatment with antibiotic eye drops formulation usually falls in low bioavailability and poor therapeutic efficiency. Hydrogel has gained much attention as ophthalmic formulation recently due to the prolonged drug retention on ocular surface. In this study, we proposed a type of all-small-molecule supramolecular hydrogel assembled from guanosine-5′-monophosphate disodium salt and tobramycin for the treatment of bacterial keratitis. Guanosine-5′-monophosphate disodium salt assembled into guanosine-quartet nanofibers via hydrogen bonding and π-π stacking, and tobramycin with five primary amine groups further crosslinked the nanofibers bearing multiple phosphate moieties into gel networks via ionic interactions. The supramolecular gel showed shear thinning and thixotropic properties, good biocompatibility, and antibacterial activity. The gel treatment significantly ameliorated P. aeruginosa induced bacterial keratitis, and showed higher therapeutic efficacy compared to tobramycin eye drop. This study provides a facile and efficient antibiotic gel formulation for clinical treatment of bacterial keratitis. A type of all-small-molecule supramolecular hydrogel was assembled from 5′-GMP and tobramycin via ionic interactions. The prepared gel showed good transparency, thixotropic property, biocompatibility, and sustained drug release. The hydrogel showed higher therapeutic efficacy of P. aeruginosa induced bacterial keratitis compared to tobramycin eye drop.
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14
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Vitkin E, Singh A, Wise J, Ben-Elazar S, Yakhini Z, Golberg A. Nondestructive protein sampling with electroporation facilitates profiling of spatial differential protein expression in breast tumors in vivo. Sci Rep 2022; 12:15835. [PMID: 36151122 PMCID: PMC9508265 DOI: 10.1038/s41598-022-19984-x] [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: 04/16/2022] [Accepted: 09/07/2022] [Indexed: 11/26/2022] Open
Abstract
Excision tissue biopsy, while central to cancer treatment and precision medicine, presents risks to the patient and does not provide a sufficiently broad and faithful representation of the heterogeneity of solid tumors. Here we introduce e-biopsy—a novel concept for molecular profiling of solid tumors using molecular sampling with electroporation. As e-biopsy provides access to the molecular composition of a solid tumor by permeabilization of the cell membrane, it facilitates tumor diagnostics without tissue resection. Furthermore, thanks to its non tissue destructive characteristics, e-biopsy enables probing the solid tumor multiple times in several distinct locations in the same procedure, thereby enabling the spatial profiling of tumor molecular heterogeneity.We demonstrate e-biopsy in vivo, using the 4T1 breast cancer model in mice to assess its performance, as well as the inferred spatial differential protein expression. In particular, we show that proteomic profiles obtained via e-biopsy in vivo distinguish the tumors from healthy breast tissue and reflect spatial tumor differential protein expression. E-biopsy provides a completely new molecular sampling modality for solid tumors molecular cartography, providing information that potentially enables more rapid and sensitive detection at lesser risk, as well as more precise personalized medicine.
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Affiliation(s)
- Edward Vitkin
- School of Computer Science, Reichman University (IDC Herzliya), Herzliya, Israel
| | - Amrita Singh
- Porter School of Environment and Earth Sciences, Tel Aviv University, Tel Aviv, Israel
| | - Julia Wise
- Porter School of Environment and Earth Sciences, Tel Aviv University, Tel Aviv, Israel
| | - Shay Ben-Elazar
- School of Computer Science, Reichman University (IDC Herzliya), Herzliya, Israel
| | - Zohar Yakhini
- School of Computer Science, Reichman University (IDC Herzliya), Herzliya, Israel. .,Computer Science Faculty, Technion, Haifa, Israel.
| | - Alexander Golberg
- Porter School of Environment and Earth Sciences, Tel Aviv University, Tel Aviv, Israel.
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15
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Huang Y, Fan C, Liu Y, Yang L, Hu W, Liu S, Wang T, Shu Z, Li B, Xing M, Yang S. Nature-Derived Okra Gel as Strong Hemostatic Bioadhesive in Human Blood, Liver, and Heart Trauma of Rabbits and Dogs. Adv Healthc Mater 2022; 11:e2200939. [PMID: 35776108 DOI: 10.1002/adhm.202200939] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 06/06/2022] [Indexed: 01/27/2023]
Abstract
Bioadhesive performance can be compromised due to bleeding. Bleeding increases mortality. Adhesives with hemostatic function are of great significance. A sustainable and robust hemostatic bioadhesive from okra is reported. The adhesive strength reaches around three and six-fold higher than commercial fibrin on pigskin and glass, respectively. The okra gel presents high-pressure resistance and great underwater adhesive strength. In human blood experiments, the okra gel can activate platelets, enhance the adhesion of activated platelets, and release coagulation factors XI and XII. By forming a fast gel layer and closely adhering to the wound, it can quickly stop bleeding in the liver and heart of rabbits and dogs. Meanwhile, okra gel can cause platelet activation at the wound site and further strengthen its hemostatic performance. It is biocompatible, biodegradable, and can promote wound healing and shows potential as a sustainable bioadhesive, especially in the scenario of significant hemorrhage.
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Affiliation(s)
- Yu Huang
- Department of Gastroenterology, Xinqiao Hospital, Army Medical University, Chongqing, 400037, P. R. China
| | - Chaoqiang Fan
- Department of Gastroenterology, Xinqiao Hospital, Army Medical University, Chongqing, 400037, P. R. China
| | - Yuqing Liu
- Department of Mechanical Engineering, University of Manitoba, Winnipeg, MB, R3T 2N2, Canada
| | - Lu Yang
- School of Biomedical Engineering and Medical Imaging, Army Medical University, Chongqing, 400038, P. R. China
| | - Weichao Hu
- Department of Mechanical Engineering, University of Manitoba, Winnipeg, MB, R3T 2N2, Canada
| | - Shuang Liu
- Department of Mechanical Engineering, University of Manitoba, Winnipeg, MB, R3T 2N2, Canada
| | - Tongchuan Wang
- Department of Mechanical Engineering, University of Manitoba, Winnipeg, MB, R3T 2N2, Canada
| | - Zhenzhen Shu
- Department of Mechanical Engineering, University of Manitoba, Winnipeg, MB, R3T 2N2, Canada
| | - Bingyun Li
- School of Medicine, West Virginia University, Morgantown, WV, 26506, USA
| | - Malcolm Xing
- Department of Mechanical Engineering, University of Manitoba, Winnipeg, MB, R3T 2N2, Canada
| | - Shiming Yang
- Department of Gastroenterology, Xinqiao Hospital, Army Medical University, Chongqing, 400037, P. R. China
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16
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Zheng H, Li J, Zhou Y, Zhang C, Xu W, Deng Y, Li J, Feng S, Yi Z, Zhou X, Ji X, Shi P, Wang Z. Electrically switched underwater capillary adhesion. Nat Commun 2022; 13:4584. [PMID: 35933460 PMCID: PMC9357018 DOI: 10.1038/s41467-022-32257-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Accepted: 07/25/2022] [Indexed: 11/09/2022] Open
Abstract
Developing underwater adhesives that can rapidly and reversibly switch the adhesion in wet conditions is important in various industrial and biomedical applications. Despite extensive progresses, the manifestation of underwater adhesion with rapid reversibility remains a big challenge. Here, we report a simple strategy that achieves strong underwater adhesion between two surfaces as well as rapid and reversible detachment in on-demand manner. Our approach leverages on the design of patterned hybrid wettability on surfaces that selectively creates a spatially confined integral air shell to preserve the water bridge in underwater environment. The overall adhesion strength can be multiplied by introducing multiple air shells and rapidly broken by disturbing the integrity of the protective air shell in response to the applied voltage on two surfaces. Our design can be constructed on the flexible substrate with hybrid wettability, which can be applied to non-conductive substrates and adapted to more complicated morphologies, extending the choice of underlying materials.
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Affiliation(s)
- Huanxi Zheng
- Department of Mechanical Engineering, City University of Hong Kong, Hong Kong, 999077, China
| | - Jing Li
- Department of Mechanical Engineering, City University of Hong Kong, Hong Kong, 999077, China.,China-UK Low Carbon College, Shanghai Jiao Tong University, Shanghai, 201306, China
| | - Yongsen Zhou
- Department of Mechanical Engineering, City University of Hong Kong, Hong Kong, 999077, China
| | - Chao Zhang
- Department of Mechanical Engineering, City University of Hong Kong, Hong Kong, 999077, China
| | - Wanghuai Xu
- Department of Mechanical Engineering, City University of Hong Kong, Hong Kong, 999077, China
| | - Yajun Deng
- Department of Mechanical Engineering, City University of Hong Kong, Hong Kong, 999077, China
| | - Jiaqian Li
- Department of Mechanical Engineering, City University of Hong Kong, Hong Kong, 999077, China
| | - Shile Feng
- Department of Mechanical Engineering, City University of Hong Kong, Hong Kong, 999077, China
| | - Zhiran Yi
- Department of Mechanical Engineering, City University of Hong Kong, Hong Kong, 999077, China
| | - Xiaofeng Zhou
- Key Laboratory of Multidimensional Information Processing, School of Communication and Electronic Engineering, East China Normal University, Shanghai, 200241, China
| | - Xianglin Ji
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong, 999077, China
| | - Peng Shi
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong, 999077, China
| | - Zuankai Wang
- Department of Mechanical Engineering, City University of Hong Kong, Hong Kong, 999077, China. .,Research Center for Nature-inspired Engineering, City University of Hong Kong, Hong Kong, 999077, China. .,Shenzhen Research Institute of City University of Hong Kong, Shenzhen, 518057, China.
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17
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Thermoresponsive Polymer Assemblies: From Molecular Design to Theranostics Application. Prog Polym Sci 2022. [DOI: 10.1016/j.progpolymsci.2022.101578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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18
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Pazhouhnia Z, Beheshtizadeh N, Namini MS, Lotfibakhshaiesh N. Portable hand‐held bioprinters promote in situ tissue regeneration. Bioeng Transl Med 2022; 7:e10307. [PMID: 36176625 PMCID: PMC9472017 DOI: 10.1002/btm2.10307] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Revised: 02/17/2022] [Accepted: 02/20/2022] [Indexed: 12/17/2022] Open
Affiliation(s)
- Zahra Pazhouhnia
- Department of Tissue Engineering School of Advanced Technologies in Medicine, Tehran University of Medical Sciences Tehran Iran
- Regenerative Medicine group (REMED) Universal Scientific Education and Research Network (USERN) Tehran Iran
| | - Nima Beheshtizadeh
- Department of Tissue Engineering School of Advanced Technologies in Medicine, Tehran University of Medical Sciences Tehran Iran
- Regenerative Medicine group (REMED) Universal Scientific Education and Research Network (USERN) Tehran Iran
| | - Mojdeh Salehi Namini
- Department of Tissue Engineering School of Advanced Technologies in Medicine, Tehran University of Medical Sciences Tehran Iran
- Regenerative Medicine group (REMED) Universal Scientific Education and Research Network (USERN) Tehran Iran
| | - Nasrin Lotfibakhshaiesh
- Department of Tissue Engineering School of Advanced Technologies in Medicine, Tehran University of Medical Sciences Tehran Iran
- Regenerative Medicine group (REMED) Universal Scientific Education and Research Network (USERN) Tehran Iran
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19
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Wang X, Yuan Z, Tao A, Wang P, Xie W, Yang S, Huang J, Wen N. Hydrogel-based patient-friendly photodynamic therapy of oral potentially malignant disorders. Biomaterials 2022; 281:121377. [DOI: 10.1016/j.biomaterials.2022.121377] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 12/07/2021] [Accepted: 01/13/2022] [Indexed: 12/26/2022]
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20
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Barroso IA, Man K, Robinson TE, Cox SC, Ghag AK. Photocurable GelMA Adhesives for Corneal Perforations. Bioengineering (Basel) 2022; 9:bioengineering9020053. [PMID: 35200405 PMCID: PMC8868637 DOI: 10.3390/bioengineering9020053] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 01/17/2022] [Accepted: 01/19/2022] [Indexed: 11/20/2022] Open
Abstract
The current treatments for the management of corneal and scleral perforations include sutures and adhesives. While sutures are invasive, induce astigmatism and carry a risk of infection, cyanoacrylate glues are toxic, proinflammatory and form an opaque and rough surface that precludes vision. Consequently, the clinical need for a fast curing and strong tissue adhesive with minimised cytotoxicity and host inflammation remains unmet. In this paper, we engineer a gelatine methacryloyl (GelMA) adhesive that can be crosslinked in situ within 2 min using UV or visible light and a riboflavin (RF)/sodium persulfate (SPS) system. Optical coherence tomography (OCT) images demonstrated that the flowable GelMA adhesive could completely fill corneal wounds and restore the ocular curvature by forming a smooth contour on the ocular surface. Further, ex vivo studies in porcine eyes showed that GelMA bioadhesives exhibited burst pressures that were comparable to cyanoacrylates (49 ± 9 kPa), with the hydrogels exhibiting a transmittance (90%), water content (85%) and storage modulus (5 kPa) similar to the human cornea. Finally, using human dermal fibroblasts, we showed that our GelMA adhesive was non-toxic and could effectively support cell adhesion and proliferation. Taken together, the adhesive’s performance, injectability and ease of administration, together with gelatin’s availability and cost-effectiveness, make it a potential stromal filler or sealant for corneal and conjunctival applications.
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21
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Trubelja A, Kasper FK, Farach-Carson MC, Harrington DA. Bringing hydrogel-based craniofacial therapies to the clinic. Acta Biomater 2022; 138:1-20. [PMID: 34743044 PMCID: PMC9234983 DOI: 10.1016/j.actbio.2021.10.056] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 10/06/2021] [Accepted: 10/29/2021] [Indexed: 01/17/2023]
Abstract
This review explores the evolution of the use of hydrogels for craniofacial soft tissue engineering, ranging in complexity from acellular injectable fillers to fabricated, cell-laden constructs with complex compositions and architectures. Addressing both in situ and ex vivo approaches, tissue restoration secondary to trauma or tumor resection is discussed. Beginning with relatively simple epithelia of oral mucosa and gingiva, then moving to more functional units like vocal cords or soft tissues with multilayer branched structures, such as salivary glands, various approaches are presented toward the design of function-driven architectures, inspired by native tissue organization. Multiple tissue replacement paradigms are presented here, including the application of hydrogels as structural materials and as delivery platforms for cells and/or therapeutics. A practical hierarchy is proposed for hydrogel systems in craniofacial applications, based on their material and cellular complexity, spatial order, and biological cargo(s). This hierarchy reflects the regulatory complexity dictated by the Food and Drug Administration (FDA) in the United States prior to commercialization of these systems for use in humans. The wide array of available biofabrication methods, ranging from simple syringe extrusion of a biomaterial to light-based spatial patterning for complex architectures, is considered within the history of FDA-approved commercial therapies. Lastly, the review assesses the impact of these regulatory pathways on the translational potential of promising pre-clinical technologies for craniofacial applications. STATEMENT OF SIGNIFICANCE: While many commercially available hydrogel-based products are in use for the craniofacial region, most are simple formulations that either are applied topically or injected into tissue for aesthetic purposes. The academic literature previews many exciting applications that harness the versatility of hydrogels for craniofacial soft tissue engineering. One of the most exciting developments in the field is the emergence of advanced biofabrication methods to design complex hydrogel systems that can promote the functional or structural repair of tissues. To date, no clinically available hydrogel-based therapy takes full advantage of current pre-clinical advances. This review surveys the increasing complexity of the current landscape of available clinical therapies and presents a framework for future expanded use of hydrogels with an eye toward translatability and U.S. regulatory approval for craniofacial applications.
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Affiliation(s)
- Alen Trubelja
- Department of Diagnostic and Biomedical Sciences, School of Dentistry, UTHealth Science Center at Houston, Houston, TX 77054, United States; Department of Bioengineering, Rice University, Houston, TX 77005, United States
| | - F Kurtis Kasper
- Department of Orthodontics, School of Dentistry, UTHealth Science Center at Houston, Houston, TX 77054, United States
| | - Mary C Farach-Carson
- Department of Diagnostic and Biomedical Sciences, School of Dentistry, UTHealth Science Center at Houston, Houston, TX 77054, United States; Department of Bioengineering, Rice University, Houston, TX 77005, United States; Department of BioSciences, Rice University, Houston, TX 77005, United States
| | - Daniel A Harrington
- Department of Diagnostic and Biomedical Sciences, School of Dentistry, UTHealth Science Center at Houston, Houston, TX 77054, United States; Department of Bioengineering, Rice University, Houston, TX 77005, United States; Department of BioSciences, Rice University, Houston, TX 77005, United States.
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22
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Development and characterization of a hydrogel-based adhesive patch for sealing open-globe injuries. Acta Biomater 2022; 137:53-63. [PMID: 34673229 PMCID: PMC8678346 DOI: 10.1016/j.actbio.2021.10.021] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 09/30/2021] [Accepted: 10/12/2021] [Indexed: 01/03/2023]
Abstract
Full-thickness wounds to the eye can lead to serious vision impairment. Current standards of care (from suturing to tissue transplantation) usually require highly skilled surgeons and use of an operating theater. In this study, we report the synthesis, optimization, and in vitro and ex vivo testing of photocrosslinkable hydrogel-based adhesive patches that can easily be applied to globe injuries or corneal incisions. According to the type and concentration of polymers used in the adhesive formulations, we were able to finely tune the physical properties of the bioadhesive including viscosity, elastic modulus, extensibility, ultimate tensile strength, adhesion, transparency, water content, degradation time, and swellability. Our in vitro studies showed no sign of cytotoxicity of the hydrogels. Moreover, the hydrogel patches showed higher adhesion on freshly explanted pig eyeballs compared to a marketed ocular sealant. Finally, ex vivo feasibility studies showed that the hydrogel patches could seal complex open-globe injuries such as large incision, cruciform injury, and injury associated with tissue loss. These results suggest that our photocrosslinkable hydrogel patch could represent a promising solution for the sealing of open-globe injuries or surgical incisions. STATEMENT OF SIGNIFICANCE: Current management of severe ocular injuries require advanced surgical skills and access to an operating theater. To address the need for emergent management of wounds that cannot be handled in the operating room, surgical adhesives have gained popularity, but none of the currently available adhesives have optimal bioavailability, adhesive or mechanical properties. This study describes the development, optimization and testing of a light-sensitive adhesive patch that can easily be applied to the eye. After solidification using visible light, the patch shows no toxicity and is more adherent to the tissue than a marketed sealant. Thus this technology could represent a promising solution to stabilize ocular injuries in emergency settings before definitive surgical repair.
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El-Husseiny HM, Mady EA, Hamabe L, Abugomaa A, Shimada K, Yoshida T, Tanaka T, Yokoi A, Elbadawy M, Tanaka R. Smart/stimuli-responsive hydrogels: Cutting-edge platforms for tissue engineering and other biomedical applications. Mater Today Bio 2022; 13:100186. [PMID: 34917924 PMCID: PMC8669385 DOI: 10.1016/j.mtbio.2021.100186] [Citation(s) in RCA: 88] [Impact Index Per Article: 44.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 11/14/2021] [Accepted: 12/08/2021] [Indexed: 02/07/2023] Open
Abstract
Recently, biomedicine and tissue regeneration have emerged as great advances that impacted the spectrum of healthcare. This left the door open for further improvement of their applications to revitalize the impaired tissues. Hence, restoring their functions. The implementation of therapeutic protocols that merge biomimetic scaffolds, bioactive molecules, and cells plays a pivotal role in this track. Smart/stimuli-responsive hydrogels are remarkable three-dimensional (3D) bioscaffolds intended for tissue engineering and other biomedical purposes. They can simulate the physicochemical, mechanical, and biological characters of the innate tissues. Also, they provide the aqueous conditions for cell growth, support 3D conformation, provide mechanical stability for the cells, and serve as potent delivery matrices for bioactive molecules. Many natural and artificial polymers were broadly utilized to design these intelligent platforms with novel advanced characteristics and tailored functionalities that fit such applications. In the present review, we highlighted the different types of smart/stimuli-responsive hydrogels with emphasis on their synthesis scheme. Besides, the mechanisms of their responsiveness to different stimuli were elaborated. Their potential for tissue engineering applications was discussed. Furthermore, their exploitation in other biomedical applications as targeted drug delivery, smart biosensors, actuators, 3D and 4D printing, and 3D cell culture were outlined. In addition, we threw light on smart self-healing hydrogels and their applications in biomedicine. Eventually, we presented their future perceptions in biomedical and tissue regeneration applications. Conclusively, current progress in the design of smart/stimuli-responsive hydrogels enhances their prospective to function as intelligent, and sophisticated systems in different biomedical applications.
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Affiliation(s)
- Hussein M. El-Husseiny
- Laboratory of Veterinary Surgery, Department of Veterinary Medicine, Faculty of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai Cho, Fuchu-shi, Tokyo, 1838509, Japan
- Department of Surgery, Anesthesiology, and Radiology, Faculty of Veterinary Medicine, Benha University, Moshtohor, Toukh, Elqaliobiya, 13736, Egypt
| | - Eman A. Mady
- Department of Animal Hygiene, Behavior and Management, Faculty of Veterinary Medicine, Benha University, Moshtohor, Toukh, Elqaliobiya, 13736, Egypt
| | - Lina Hamabe
- Laboratory of Veterinary Surgery, Department of Veterinary Medicine, Faculty of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai Cho, Fuchu-shi, Tokyo, 1838509, Japan
| | - Amira Abugomaa
- Faculty of Veterinary Medicine, Mansoura University, Mansoura, Dakahliya, 35516, Egypt
| | - Kazumi Shimada
- Laboratory of Veterinary Surgery, Department of Veterinary Medicine, Faculty of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai Cho, Fuchu-shi, Tokyo, 1838509, Japan
- Division of Research Animal Laboratory and Translational Medicine, Research and Development Center, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki City, Osaka, 569-8686, Japan
| | - Tomohiko Yoshida
- Laboratory of Veterinary Surgery, Department of Veterinary Medicine, Faculty of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai Cho, Fuchu-shi, Tokyo, 1838509, Japan
| | - Takashi Tanaka
- Laboratory of Veterinary Surgery, Department of Veterinary Medicine, Faculty of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai Cho, Fuchu-shi, Tokyo, 1838509, Japan
| | - Aimi Yokoi
- Laboratory of Veterinary Surgery, Department of Veterinary Medicine, Faculty of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai Cho, Fuchu-shi, Tokyo, 1838509, Japan
| | - Mohamed Elbadawy
- Department of Pharmacology, Faculty of Veterinary Medicine, Benha University, Moshtohor, Toukh, Elqaliobiya, 13736, Egypt
| | - Ryou Tanaka
- Laboratory of Veterinary Surgery, Department of Veterinary Medicine, Faculty of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai Cho, Fuchu-shi, Tokyo, 1838509, Japan
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24
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Gu H, Wang G, Cao X. Thermoresponsive nanocomposite hydrogels with high mechanical strength and toughness based on a dual crosslinking strategy. J Appl Polym Sci 2021. [DOI: 10.1002/app.51509] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Heng Gu
- School of Materials Science and Engineering South China University of Technology Guangzhou China
- National Engineering Research Center for Tissue Restoration and Reconstruction (NERC‐TRR) Guangzhou China
- Key Laboratory of Biomedical Engineering of Guangdong Province South China University of Technology Guangzhou China
| | - Gang Wang
- Department of Spine Surgery The First Affiliated Hospital of Sun Yat‐sen University Guangzhou China
- Guangdong Provincial Key Laboratory of Orthopaedics and Traumatology Guangzhou China
| | - Xiaodong Cao
- School of Materials Science and Engineering South China University of Technology Guangzhou China
- National Engineering Research Center for Tissue Restoration and Reconstruction (NERC‐TRR) Guangzhou China
- Key Laboratory of Biomedical Engineering of Guangdong Province South China University of Technology Guangzhou China
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25
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van der Ven CFT, Tibbitt MW, Conde J, van Mil A, Hjortnaes J, Doevendans PA, Sluijter JPG, Aikawa E, Langer RS. Controlled delivery of gold nanoparticle-coupled miRNA therapeutics via an injectable self-healing hydrogel. NANOSCALE 2021; 13:20451-20461. [PMID: 34817483 PMCID: PMC8675028 DOI: 10.1039/d1nr04973a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 10/21/2021] [Indexed: 06/13/2023]
Abstract
Differential expression of microRNAs (miRNAs) plays a role in many diseases, including cancer and cardiovascular diseases. Potentially, miRNAs could be targeted with miRNA-therapeutics. Sustained delivery of these therapeutics remains challenging. This study couples miR-mimics to PEG-peptide gold nanoparticles (AuNP) and loads these AuNP-miRNAs in an injectable, shear thinning, self-assembling polymer nanoparticle (PNP) hydrogel drug delivery platform to improve delivery. Spherical AuNPs coated with fluorescently labelled miR-214 are loaded into an HPMC-PEG-b-PLA PNP hydrogel. Release of AuNP/miRNAs is quantified, AuNP-miR-214 functionality is shown in vitro in HEK293 cells, and AuNP-miRNAs are tracked in a 3D bioprinted human model of calcific aortic valve disease (CAVD). Lastly, biodistribution of PNP-AuNP-miR-67 is assessed after subcutaneous injection in C57BL/6 mice. AuNP-miRNA release from the PNP hydrogel in vitro demonstrates a linear pattern over 5 days up to 20%. AuNP-miR-214 transfection in HEK293 results in 33% decrease of Luciferase reporter activity. In the CAVD model, AuNP-miR-214 are tracked into the cytoplasm of human aortic valve interstitial cells. Lastly, 11 days after subcutaneous injection, AuNP-miR-67 predominantly clears via the liver and kidneys, and fluorescence levels are again comparable to control animals. Thus, the PNP-AuNP-miRNA drug delivery platform provides linear release of functional miRNAs in vitro and has potential for in vivo applications.
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Affiliation(s)
- Casper F T van der Ven
- Regenerative Medicine Center, University Medical Center Utrecht, Uppsalalaan 8, 3584 CT Utrecht, the Netherlands
- Department of Cardiology, Experimental Cardiology Laboratory, Circulatory Health Laboratory, University Medical Center Utrecht, Utrecht University, Heidelberglaan 100, 3584 CX Utrecht, the Netherlands
- Center of Excellence in Cardiovascular Biology, Division of Cardiovascular Medicine, Department of Medicine, Brigham and Woman's Hospital, Harvard Medical School, 77 Avenue Louis Pasteur, Boston 02115, MA, USA
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 500 Main Street, Cambridge 02142, MA, USA
| | - Mark W Tibbitt
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 500 Main Street, Cambridge 02142, MA, USA
- Macromolecular Engineering Laboratory, Department of Mechanical and Process Engineering, ETH Zurich, Sonneggstrasse 3, 8092 Zurich, Switzerland
| | - João Conde
- NOVA Medical School, Faculdade de Ciências Médicas, Universidade Nova de Lisboa, 1169-056 Lisboa, Portugal
- Centre for Toxicogenomics and Human Health, Genetics, Oncology and Human Toxicology, NOVA Medical School, Faculdade de Ciências Médicas, Universidade Nova de Lisboa, 1169-056 Lisboa, Portugal
| | - Alain van Mil
- Regenerative Medicine Center, University Medical Center Utrecht, Uppsalalaan 8, 3584 CT Utrecht, the Netherlands
- Department of Cardiology, Experimental Cardiology Laboratory, Circulatory Health Laboratory, University Medical Center Utrecht, Utrecht University, Heidelberglaan 100, 3584 CX Utrecht, the Netherlands
- Netherlands Heart Institute, Moreelsepark 1, 3511 EP Utrecht, the Netherlands
| | - Jesper Hjortnaes
- Regenerative Medicine Center, University Medical Center Utrecht, Uppsalalaan 8, 3584 CT Utrecht, the Netherlands
- Department of Cardiology, Experimental Cardiology Laboratory, Circulatory Health Laboratory, University Medical Center Utrecht, Utrecht University, Heidelberglaan 100, 3584 CX Utrecht, the Netherlands
| | - Pieter A Doevendans
- Department of Cardiology, Experimental Cardiology Laboratory, Circulatory Health Laboratory, University Medical Center Utrecht, Utrecht University, Heidelberglaan 100, 3584 CX Utrecht, the Netherlands
- Netherlands Heart Institute, Moreelsepark 1, 3511 EP Utrecht, the Netherlands
| | - Joost P G Sluijter
- Regenerative Medicine Center, University Medical Center Utrecht, Uppsalalaan 8, 3584 CT Utrecht, the Netherlands
- Department of Cardiology, Experimental Cardiology Laboratory, Circulatory Health Laboratory, University Medical Center Utrecht, Utrecht University, Heidelberglaan 100, 3584 CX Utrecht, the Netherlands
| | - Elena Aikawa
- Center of Excellence in Cardiovascular Biology, Division of Cardiovascular Medicine, Department of Medicine, Brigham and Woman's Hospital, Harvard Medical School, 77 Avenue Louis Pasteur, Boston 02115, MA, USA
- Center for Interdisciplinary Cardiovascular Sciences, Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, 3 Blackfan Circle, Boston 02115, MA, USA.
| | - Robert S Langer
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 500 Main Street, Cambridge 02142, MA, USA
- Department of Chemical Engineering, Massachusetts Institute of Technology, 25 Ames Street, Cambridge 02142, MA, USA.
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26
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Wei C, Song J, Tan H. A paintable ophthalmic adhesive with customizable properties based on symmetrical/asymmetrical cross-linking. Biomater Sci 2021; 9:7522-7533. [PMID: 34643623 DOI: 10.1039/d1bm01197a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
In situ and efficient incision sealing for ophthalmic surgery remains unresolved. Current commercially available gel adhesives often suffer from unsuitable gelation time, difficulty in micro-delivery, and mismatched degradation period, leading to difficulties for application in ocular tissue areas. Herein, a novel hydrogel adhesive was developed based on the simultaneous crosslinking of poly(lysine) (PLL) and lysine (Lys) with an end-modified active ester multi-arm polyethylene glycol (PEG) via the amidation reaction, where the residual terminal active ester of PEG can also bond to amino groups on tissue to provide strong adhesion. Due to the different molecular structures around their amino groups, PLL and Lys can crosslink with 4-arm-PEG-NHS (active ester) respectively, to form symmetrical and asymmetrical crosslinking networks, which exhibit various mechanical properties. Therefore, just by adjusting PLL/Lys ratios, the PEG-PLL-Lys hydrogel can easily possess a suitable gelation time, appropriate mechanical properties and matched degradation rate. As a result, a paintable, readily accessible and biocompatible ophthalmic tissue adhesive (sealant) is prepared for sealing ocular tissue incision. Considering the simple strategy and outstanding performance, the PEG-PLL-Lys hydrogel is promising for clinical transformation.
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Affiliation(s)
- Changzheng Wei
- Shanghai Qisheng Biological Preparation Co., Ltd, Shanghai, 201106, China.
| | - Jialin Song
- Shanghai Qisheng Biological Preparation Co., Ltd, Shanghai, 201106, China.
| | - Haoqi Tan
- Shanghai Qisheng Biological Preparation Co., Ltd, Shanghai, 201106, China.
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27
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Malekmohammadi S, Sedghi Aminabad N, Sabzi A, Zarebkohan A, Razavi M, Vosough M, Bodaghi M, Maleki H. Smart and Biomimetic 3D and 4D Printed Composite Hydrogels: Opportunities for Different Biomedical Applications. Biomedicines 2021; 9:1537. [PMID: 34829766 PMCID: PMC8615087 DOI: 10.3390/biomedicines9111537] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 10/10/2021] [Accepted: 10/16/2021] [Indexed: 12/17/2022] Open
Abstract
In recent years, smart/stimuli-responsive hydrogels have drawn tremendous attention for their varied applications, mainly in the biomedical field. These hydrogels are derived from different natural and synthetic polymers but are also composite with various organic and nano-organic fillers. The basic functions of smart hydrogels rely on their ability to change behavior; functions include mechanical, swelling, shaping, hydrophilicity, and bioactivity in response to external stimuli such as temperature, pH, magnetic field, electromagnetic radiation, and biological molecules. Depending on the final applications, smart hydrogels can be processed in different geometries and modalities to meet the complicated situations in biological media, namely, injectable hydrogels (following the sol-gel transition), colloidal nano and microgels, and three dimensional (3D) printed gel constructs. In recent decades smart hydrogels have opened a new horizon for scientists to fabricate biomimetic customized biomaterials for tissue engineering, cancer therapy, wound dressing, soft robotic actuators, and controlled release of bioactive substances/drugs. Remarkably, 4D bioprinting, a newly emerged technology/concept, aims to rationally design 3D patterned biological matrices from synthesized hydrogel-based inks with the ability to change structure under stimuli. This technology has enlarged the applicability of engineered smart hydrogels and hydrogel composites in biomedical fields. This paper aims to review stimuli-responsive hydrogels according to the kinds of external changes and t recent applications in biomedical and 4D bioprinting.
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Affiliation(s)
- Samira Malekmohammadi
- Department of Engineering, School of Science and Technology, Nottingham Trent University, Nottingham NG11 8NS, UK;
- Department of Regenerative Medicine, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran 1665659911, Iran;
- Nanomedicine Research Association (NRA), Universal Scientific Education and Research Network (USERN), Tehran 1419733151, Iran;
| | - Negar Sedghi Aminabad
- Department of Medical Nanotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz 5166653431, Iran; (N.S.A.); (A.S.)
| | - Amin Sabzi
- Department of Medical Nanotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz 5166653431, Iran; (N.S.A.); (A.S.)
| | - Amir Zarebkohan
- Nanomedicine Research Association (NRA), Universal Scientific Education and Research Network (USERN), Tehran 1419733151, Iran;
- Department of Medical Nanotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz 5166653431, Iran; (N.S.A.); (A.S.)
| | - Mehdi Razavi
- Biionix Cluster, Department of Internal Medicine, College of Medicine, University of Central Florida, Orlando, FL 32827, USA;
| | - Massoud Vosough
- Department of Regenerative Medicine, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran 1665659911, Iran;
| | - Mahdi Bodaghi
- Department of Engineering, School of Science and Technology, Nottingham Trent University, Nottingham NG11 8NS, UK;
| | - Hajar Maleki
- Department of Chemistry, Institute of Inorganic Chemistry, University of Cologne, 50939 Cologne, Germany
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28
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Feng L, Liu R, Zhang X, Li J, Zhu L, Li Z, Li W, Zhang A. Thermo-Gelling Dendronized Chitosans as Biomimetic Scaffolds for Corneal Tissue Engineering. ACS APPLIED MATERIALS & INTERFACES 2021; 13:49369-49379. [PMID: 34636236 DOI: 10.1021/acsami.1c16087] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Biomimetic scaffolds with transparent, biocompatible, and in situ-forming properties are highly desirable for corneal tissue engineering, which can deeply fill corneal stromal defects with irregular shapes and support tissue regeneration. We here engineer a novel class of corneal scaffolds from oligoethylene glycol (OEG)-based dendronized chitosans (DCs), whose aqueous solutions show intriguing sol-gel transitions triggered by physiological temperature, resulting in highly transparent hydrogels. Gelling points of these hydrogels can be easily tuned, and furthermore, their mechanical strengths can be significantly enhanced when injected into PBS at 37 °C instead of pure water. In vitro tests indicate that these DC hydrogels exhibit excellent biocompatibility and can promote proliferation and migration of keratocyte. When applied in the rabbit eyes with corneal stromal defects, in situ formed DC hydrogels play a positive effect for new tissue regeneration. Overall, this thermo-gelling DCs possess appealing features as corneal tissue substitutes with their excellent biocompatibility and unprecedented thermoresponsiveness.
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Affiliation(s)
- Letian Feng
- International Joint Laboratory of Biomimetic and Smart Polymers, School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China
| | - Ruixing Liu
- Henan Eye Hospital, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou 450003, China
| | - Xiacong Zhang
- International Joint Laboratory of Biomimetic and Smart Polymers, School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China
| | - Jingguo Li
- Henan Eye Hospital, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou 450003, China
| | - Lei Zhu
- Henan Eye Hospital, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou 450003, China
| | - Zhanrong Li
- Henan Eye Hospital, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou 450003, China
| | - Wen Li
- International Joint Laboratory of Biomimetic and Smart Polymers, School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China
| | - Afang Zhang
- International Joint Laboratory of Biomimetic and Smart Polymers, School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China
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29
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Chen H, Wang L, Wang S, Li J, Li Z, Lin Y, Wang X, Huang X. Construction of Hybrid Bi‐microcompartments with Exocytosis‐Inspired Behavior toward Fast Temperature‐Modulated Transportation of Living Organisms. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202102846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Haixu Chen
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin 150001 China
| | - Lei Wang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin 150001 China
| | - Shengliang Wang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin 150001 China
| | - Junbo Li
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin 150001 China
| | - Zhenhui Li
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin 150001 China
| | - Youping Lin
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin 150001 China
| | - Xiaoliang Wang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin 150001 China
| | - Xin Huang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin 150001 China
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30
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Chen H, Wang L, Wang S, Li J, Li Z, Lin Y, Wang X, Huang X. Construction of Hybrid Bi-microcompartments with Exocytosis-Inspired Behavior toward Fast Temperature-Modulated Transportation of Living Organisms. Angew Chem Int Ed Engl 2021; 60:20795-20802. [PMID: 33908155 DOI: 10.1002/anie.202102846] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 04/09/2021] [Indexed: 11/10/2022]
Abstract
Inspired by the unique characteristics of living cells, the creation of life-inspired functional ensembles is a rapidly expanding research topic, enabling transformative applications in various disciplines. Herein, we report a facile method for the fabrication of phospholipid and block copolymer hybrid bi-microcompartments via spontaneous asymmetric assembly at the water/tributyrin interface, whereby the temperature-mediated dewetting of the inner microcompartments allowed for exocytosis to occur in the constructed system. The exocytosis location and commencement time could be controlled by the buoyancy of the inner microcompartment and temperature, respectively. Furthermore, the constructed bi-microcompartments showed excellent biocompatibility and a universal loading capacity toward cargoes of widely ranging sizes; thus, the proliferation and temperature-programmed transportation of living organisms was achieved. Our results highlight opportunities for the development of complex mesoscale dynamic ensembles with life-inspired behaviors and provide a novel platform for on-demand transport of various living organisms.
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Affiliation(s)
- Haixu Chen
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, China
| | - Lei Wang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, China
| | - Shengliang Wang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, China
| | - Junbo Li
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, China
| | - Zhenhui Li
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, China
| | - Youping Lin
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, China
| | - Xiaoliang Wang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, China
| | - Xin Huang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, China
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31
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Zhang K, Xue K, Loh XJ. Thermo-Responsive Hydrogels: From Recent Progress to Biomedical Applications. Gels 2021; 7:77. [PMID: 34202514 PMCID: PMC8293033 DOI: 10.3390/gels7030077] [Citation(s) in RCA: 63] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 06/21/2021] [Accepted: 06/22/2021] [Indexed: 12/29/2022] Open
Abstract
Thermogels are also known as thermo-sensitive or thermo-responsive hydrogels and can undergo a sol-gel transition as the temperature increases. This thermogelling behavior is the result of combined action from multiscale thermo-responsive mechanisms. From micro to macro, these mechanisms can be attributed to LCST behavior, micellization, and micelle aggregation of thermogelling polymers. Due to its facile phase conversion properties, thermogels are injectable yet can form an in situ gel in the human body. Thermogels act as a useful platform biomaterial that operates at physiological body temperatures. The purpose of this review is to summarize the recent progress in thermogel research, including investigations on the thermogel gelation mechanism and its applications in drug delivery, 3D cell culture, and tissue engineering. The review also discusses emerging directions in the study of thermogels.
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Affiliation(s)
- Kaiwen Zhang
- Department of Biomedical Engineering, College of Engineering, Southern University of Science and Technology (SUSTech), 1088 Xueyuan Avenue, Shenzhen 518055, China;
| | - Kun Xue
- Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, Singapore 138634, Singapore
| | - Xian Jun Loh
- Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, Singapore 138634, Singapore
- Department of Materials Science and Engineering, National University of Singapore (NUS), 9 Engineering Drive 1, Singapore 117576, Singapore
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32
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Constantinou AP, Georgiou TK. Pre‐clinical and clinical applications of thermoreversible hydrogels in biomedical engineering: a review. POLYM INT 2021. [DOI: 10.1002/pi.6266] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Anna P Constantinou
- Department of Materials Imperial College London, South Kensington Campus, Royal School of Mines London UK
| | - Theoni K Georgiou
- Department of Materials Imperial College London, South Kensington Campus, Royal School of Mines London UK
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33
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Lin X, Wu X, Chen X, Wang B, Xu W. Intellective and stimuli-responsive drug delivery systems in eyes. Int J Pharm 2021; 602:120591. [PMID: 33845152 DOI: 10.1016/j.ijpharm.2021.120591] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 03/23/2021] [Accepted: 04/05/2021] [Indexed: 12/24/2022]
Abstract
Stimuli-responsive drug delivery systems have attracted widespread attention in recent years since they can control drug release in a spatiotemporal manner and can achieve tunable drug release according to patient's physiological or pathological condition. In this review, we briefly introduce the drug delivery barriers and drug delivery systems in the anterior and posterior segment of eyes, and collect the recent advances in stimuli-responsive drug delivery systems in eyes for controlled drug release in response to exogenous stimuli (ultrasound, magnetic stimulus, electrical stimulus, and light) or endogenous stimuli (enzyme, active oxygen species, temperature, ions, and pH). In addition, the design and mechanisms of the stimuli-responsive drug delivery systems have been summarized in this review, and the advantages and limitations are also briefly discussed.
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Affiliation(s)
- Xueqi Lin
- Eye Center, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China
| | - Xingdi Wu
- Eye Center, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China
| | - Xiang Chen
- Eye Center, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China
| | - Ben Wang
- Cancer Institute (Key Laboratory of Cancer Prevention and Intervention, China National Ministry of Education), the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China; Institute of Translational Medicine, Zhejiang University, Hangzhou, Zhejiang 310029, China.
| | - Wen Xu
- Eye Center, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China.
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Zhang ZY, Sun YJ, Song JY, Fan B, Li GY. Experimental models and examination methods of retinal detachment. Brain Res Bull 2021; 169:51-62. [PMID: 33434623 DOI: 10.1016/j.brainresbull.2021.01.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 12/11/2020] [Accepted: 01/04/2021] [Indexed: 12/19/2022]
Abstract
Retinal detachment refers to the separation of the retinal neuroepithelium and pigment epithelium, usually involving the death of photoreceptor cells. Severe detachment may lead to permanent visual impairment if not treated properly and promptly. According to the underlying causes, retinal detachment falls into one of three categories: exudative retinal detachment, traction detachment, and rhegmatogenous retinal detachment. Like many other diseases, it is difficult to study the pathophysiology of retinal detachment directly in humans, because the human retinal tissues are precious, scarce and non-regenerative; thus, establishing experimental models that better mimic the disease is necessary. In this review, we summarize the existing models of the three categories of retinal detachment both in vivo and in vitro, along with an overview of their examination methods and the major strengths and weaknesses of each model.
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Affiliation(s)
- Zi-Yuan Zhang
- Second Hosp Jilin Univ, Dept Ophthalmol, 218 Zi Qiang St, Changchun, 130041, PR China.
| | - Ying-Jian Sun
- Second Hosp Jilin Univ, Dept Ophthalmol, 218 Zi Qiang St, Changchun, 130041, PR China.
| | - Jing-Yao Song
- Second Hosp Shandong Univ, Dept Ophthalmol, 247 Bei Yuan St, Jinan, 250031, PR China.
| | - Bin Fan
- Second Hosp Jilin Univ, Dept Ophthalmol, 218 Zi Qiang St, Changchun, 130041, PR China.
| | - Guang-Yu Li
- Second Hosp Jilin Univ, Dept Ophthalmol, 218 Zi Qiang St, Changchun, 130041, PR China.
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Karayilan M, Clamen L, Becker ML. Polymeric Materials for Eye Surface and Intraocular Applications. Biomacromolecules 2021; 22:223-261. [PMID: 33405900 DOI: 10.1021/acs.biomac.0c01525] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Ocular applications of polymeric materials have been widely investigated for medical diagnostics, treatment, and vision improvement. The human eye is a vital organ that connects us to the outside world so when the eye is injured, infected, or impaired, it needs immediate medical treatment to maintain clear vision and quality of life. Moreover, several essential parts of the eye lose their functions upon aging, causing diminished vision. Modern polymer science and polymeric materials offer various alternatives, such as corneal and scleral implants, artificial ocular lenses, and vitreous substitutes, to replace the damaged parts of the eye. In addition to the use of polymers for medical treatment, polymeric contact lenses can provide not only vision correction, but they can also be used as wearable electronics. In this Review, we highlight the evolution of polymeric materials for specific ocular applications such as intraocular lenses and current state-of-the-art polymeric systems with unique properties for contact lens, corneal, scleral, and vitreous body applications. We organize this Review paper by following the path of light as it travels through the eye. Starting from the outside of the eye (contact lenses), we move onto the eye's surface (cornea and sclera) and conclude with intraocular applications (intraocular lens and vitreous body) of mostly synthetic polymers and several biopolymers. Initially, we briefly describe the anatomy and physiology of the eye as a reminder of the eye parts and their functions. The rest of the Review provides an overview of recent advancements in next-generation contact lenses and contact lens sensors, corneal and scleral implants, solid and injectable intraocular lenses, and artificial vitreous body. Current limitations for future improvements are also briefly discussed.
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Affiliation(s)
- Metin Karayilan
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
| | - Liane Clamen
- Adaptilens, LLC, Boston, Massachusetts 02467, United States
| | - Matthew L Becker
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States.,Mechanical Engineering and Materials Science, Orthopaedic Surgery, and Biomedical Engineering, Duke University, Durham, North Carolina 27708, United States
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Smith AAA, Maikawa CL, Lopez Hernandez H, Appel EA. Controlling properties of thermogels by tuning critical solution behaviour of ternary copolymers. Polym Chem 2021. [DOI: 10.1039/d0py01696a] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Thermogelling tri-block terpolymers were made from a bifunctional PEG RAFT agent. The critical solution behavior was tunable by alteration of the terpolymer composition, enabling modulation of gelation temperatures and hydrogel viscoelasticity.
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Affiliation(s)
- Anton A. A. Smith
- Department of Materials Science & Engineering
- Stanford University
- Stanford
- USA
| | | | | | - Eric A. Appel
- Department of Materials Science & Engineering
- Stanford University
- Stanford
- USA
- Department of Bioengineering
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Kim S, Kang-Mieler JJ, Liu W, Wang Z, Yiu G, Teixeira LBC, Mieler WF, Thomasy SM. Safety and Biocompatibility of Aflibercept-Loaded Microsphere Thermo-Responsive Hydrogel Drug Delivery System in a Nonhuman Primate Model. Transl Vis Sci Technol 2020; 9:30. [PMID: 32742760 PMCID: PMC7354880 DOI: 10.1167/tvst.9.3.30] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Purpose To evaluate the safety and tolerability of a microsphere thermo-responsive hydrogel drug delivery system (DDS) loaded with aflibercept in a nonhuman primate model. Methods A sterile 50 µL of aflibercept-loaded microsphere thermo-responsive hydrogel-DDS (aflibercept-DDS) was injected intravitreally into the right eye of 10 healthy rhesus macaques. A complete ophthalmic examination, intraocular pressure (IOP) measurement, fundus photography, spectral-domain optical coherence tomography (SD-OCT), and electroretinogram were performed monthly for 6 months. One macaque was euthanized monthly, and the enucleated eyes were submitted for measurement of bioactive aflibercept concentrations. Four eyes were submitted for histopathology. Results Injected aflibercept-DDS was visualized in the vitreous until 6 months postinjection. No abnormalities were observed in the anterior segment, and IOP remained within normal range during the study period. A small number of cells were observed in the vitreous of some macaques, but otherwise the remainder of the posterior segment examination was normal. No significant changes in retinal architecture or function as assessed by SD-OCT and histology or full-field electroretinography, respectively, were observed. A mild, focal foreign body reaction around the injectate was observed with histology at 6 months postinjection. A mean of 2.1 ng/µL of aflibercept was measured in the vitreous. Conclusions Intravitreally injected aflibercept-DDS achieved controlled, sustained release of aflibercept with no adverse effects for up to 6 months in the eyes of healthy rhesus macaques. Translational Relevance Aflibercept-DDS may be a more effective method to deliver bioactive antivascular endothelial growth factor agents than current practice by reducing the frequency of intravitreal injections and providing controlled drug release.
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Affiliation(s)
- Soohyun Kim
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California -Davis, Davis, CA, USA
| | - Jennifer J Kang-Mieler
- Department of Biomedical Engineering, Illinois Institute of Technology, Chicago, IL, USA
| | - Wenqiang Liu
- Department of Biomedical Engineering, Illinois Institute of Technology, Chicago, IL, USA
| | - Zhe Wang
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California -Davis, Davis, CA, USA
| | - Glenn Yiu
- Department of Ophthalmology and Vision Science, School of Medicine, University of California-Davis, Davis, CA, USA
| | - Leandro B C Teixeira
- Department of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, WI, USA
| | - William F Mieler
- Department of Ophthalmology and Visual Sciences, University of Illinois at Chicago, Chicago, IL, USA
| | - Sara M Thomasy
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California -Davis, Davis, CA, USA.,Department of Ophthalmology and Vision Science, School of Medicine, University of California-Davis, Davis, CA, USA
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Jumelle C, Gholizadeh S, Annabi N, Dana R. Advances and limitations of drug delivery systems formulated as eye drops. J Control Release 2020; 321:1-22. [PMID: 32027938 DOI: 10.1016/j.jconrel.2020.01.057] [Citation(s) in RCA: 165] [Impact Index Per Article: 41.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Revised: 01/30/2020] [Accepted: 01/31/2020] [Indexed: 12/12/2022]
Abstract
Topical instillation of eye drops remains the most common and easiest route of ocular drug administration, representing the treatment of choice for many ocular diseases. Nevertheless, low ocular bioavailability of topically applied drug molecules can considerably limit their efficacy. Over the last several decades, numerous drug delivery systems (DDS) have been developed in order to improve drug bioavailability on the ocular surfaces. This review systematically covers the most recent advances of DDS applicable by topical instillation, that have shown better performance in in vivo models compared to standard eye drop formulations. These delivery systems are based on in situ forming gels, nanoparticles and combinations of both. Most of the DDS have been developed using natural or synthetic polymers. Polymers offer many advantageous properties for designing advanced DDS including biocompatibility, gelation properties and/or mucoadhesiveness. However, despite the high number of studies published over the last decade, there are several limitations for clinical translation of DDS. This review article focuses on the recent advances for the development of ocular drug delivery systems. In addtion, the potential challenges for commercialization of new DDS are presented.
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Affiliation(s)
- Clotilde Jumelle
- Schepens Eye Research Institute, Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
| | - Shima Gholizadeh
- Chemical and Biomolecular Engineering, University of California - Los Angeles, Los Angeles, CA, USA
| | - Nasim Annabi
- Chemical and Biomolecular Engineering, University of California - Los Angeles, Los Angeles, CA, USA; Center for Minimally Invasive Therapeutics (C-MIT), California NanoSystems Institute (CNSI), University of California - Los Angeles, Los Angeles, CA, USA.
| | - Reza Dana
- Schepens Eye Research Institute, Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA, USA.
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Cao W, Gao C. A hydrogel adhesive fabricated from poly(ethylene glycol) diacrylate and poly(allylamine hydrochloride) with fast and spontaneous degradability and anti-bacterial property. POLYMER 2020. [DOI: 10.1016/j.polymer.2019.122082] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Du X, Cui H, Zhao Q, Wang J, Chen H, Wang Y. Inside-Out 3D Reversible Ion-Triggered Shape-Morphing Hydrogels. RESEARCH (WASHINGTON, D.C.) 2019; 2019:6398296. [PMID: 31549074 PMCID: PMC6750057 DOI: 10.34133/2019/6398296] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Accepted: 12/04/2018] [Indexed: 12/14/2022]
Abstract
Shape morphing is a critical aptitude for the survival of organisms and is determined by anisotropic tissue composition and directional orientation of micro- and nanostructures within cell walls, resulting in different swelling behaviors. Recent efforts have been dedicated to mimicking the behaviors that nature has perfected over billions of years. We present a robust strategy for preparing 3D periodically patterned single-component sodium alginate hydrogel sheets cross-linked with Ca2+ ions, which can reversibly deform and be retained into various desirable inside-out shapes as triggered by biocompatible ions (Na+/Ca2+). By changing the orientations of the patterned microchannels or triggering with Na+/Ca2+ ions, various 3D twisting, tubular, and plant-inspired architectures can be facilely programmed. Not only can the transformation recover their initial shapes reversibly, but also it can keep the designated shapes without continuous stimuli. These inside-out 3D reversible ion-triggered hydrogel transformations shall inspire more attractive applications in tissue engineering, biomedical devices, and soft robotics fields.
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Affiliation(s)
- X. Du
- Institute of Biomedical & Health Engineering, Shenzhen Institutes of Advanced Technology (SIAT), Chinese Academy of Sciences (CAS), Shenzhen, 518035, China
| | - H. Cui
- Institute of Biomedical & Health Engineering, Shenzhen Institutes of Advanced Technology (SIAT), Chinese Academy of Sciences (CAS), Shenzhen, 518035, China
| | - Q. Zhao
- Institute of Biomedical & Health Engineering, Shenzhen Institutes of Advanced Technology (SIAT), Chinese Academy of Sciences (CAS), Shenzhen, 518035, China
| | - J. Wang
- Institute of Biomedical & Health Engineering, Shenzhen Institutes of Advanced Technology (SIAT), Chinese Academy of Sciences (CAS), Shenzhen, 518035, China
| | - H. Chen
- Institute of Biomedical & Health Engineering, Shenzhen Institutes of Advanced Technology (SIAT), Chinese Academy of Sciences (CAS), Shenzhen, 518035, China
| | - Y. Wang
- Institute of Biomedical & Health Engineering, Shenzhen Institutes of Advanced Technology (SIAT), Chinese Academy of Sciences (CAS), Shenzhen, 518035, China
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Farhat W, Hasan A, Lucia L, Becquart F, Ayoub A, Kobeissy F. Hydrogels for Advanced Stem Cell Therapies: A Biomimetic Materials Approach for Enhancing Natural Tissue Function. IEEE Rev Biomed Eng 2019; 12:333-351. [DOI: 10.1109/rbme.2018.2824335] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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