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Li L, Lv Z, Wang X, Cao X, Yuan X, Wei Q, Wang Q. Spray-assisted layer-by-layer deposition of quaternized chitosan/tannic acid for the construction of multifunctional bio-based nonwoven dressings. Int J Biol Macromol 2024; 277:134055. [PMID: 39038583 DOI: 10.1016/j.ijbiomac.2024.134055] [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: 03/28/2024] [Revised: 07/05/2024] [Accepted: 07/19/2024] [Indexed: 07/24/2024]
Abstract
Gauze wound dressings have received considerable attention due to their cost-effectiveness, excellent mechanical properties, and widespread applications. However, their inability to actively combat microorganisms and effectively scavenge free radicals results in suboptimal wound management. In this study, a novel nonwoven-based gauze dressing coated with quaternized chitosan/tannic acid (QCS/TA), based on electrostatic interaction and hydrogen bonding, was successfully prepared using a spray-assisted layer-by-layer assembly method. The bio-based nonwoven dressing, assembled with multiple interlacing bilayers, demonstrated outstanding antimicrobial properties, eliminating 99.99 % of Staphylococcus aureus (S. aureus) and 85 % of Escherichia coli (E. coli). Compared to the pristine nonwoven dressing, the QCS/TA-coated nonwoven dressing scavenged >85 % of the surrounding radicals within 2 h. Additionally, the nonwoven dressing exhibits excellent coagulation properties. Notably, the facile spraying procedure preserved most of the softness and breathability of the nonwoven substrate. After the deposition of seven bilayers, the bending stiffness and drape coefficient increased by only 37.63 % and 3.85 %, respectively, while the air permeability and moisture permeability reached 1712 mm/s and 3683.58 g/m2/d, respectively. This bio-based nonwoven dressing, derived from safe and non-toxic ingredients, holds promise as the next generation of multifunctional gauze dressings.
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Affiliation(s)
- Lingling Li
- Key Laboratory of Eco-textiles, Ministry of Education, Jiangnan University, Wuxi 214122, PR China
| | - Zihao Lv
- Key Laboratory of Eco-textiles, Ministry of Education, Jiangnan University, Wuxi 214122, PR China
| | - Xinyi Wang
- CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Modern Mechanics, University of Science and Technology of China, Hefei 230027, PR China
| | - Xiuming Cao
- Jiangsu Sunshine Co., Jiangyin 214400, China
| | - Xiaohong Yuan
- Faculty of Clothing and Design, Minjiang University, Fuzhou 350121, Fujian, PR China
| | - Qufu Wei
- Key Laboratory of Eco-textiles, Ministry of Education, Jiangnan University, Wuxi 214122, PR China
| | - Qingqing Wang
- Key Laboratory of Eco-textiles, Ministry of Education, Jiangnan University, Wuxi 214122, PR China.
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Xiao Z, Zhou L, Sun P, Li Z, Kang Y, Guo M, Niu Y, Zhao D. Regulation of mechanical properties of microcapsules and their applications. J Control Release 2024; 375:90-104. [PMID: 39233280 DOI: 10.1016/j.jconrel.2024.09.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2024] [Revised: 08/29/2024] [Accepted: 09/01/2024] [Indexed: 09/06/2024]
Abstract
Microcapsules encapsulating payloads are one of the most promising delivery methods. The mechanical properties of microcapsules often determine their application scenarios. For example, microcapsules with low mechanical strength are more widely used in biomedical applications due to their superior biocompatibility, softness, and deformability. In contrast, microcapsules with high mechanical strength are often mixed into the matrix to enhance the material. Therefore, characterizing and regulating the mechanical properties of microcapsules is essential for their design optimization. This paper first outlines four methods for the mechanical characterization of microcapsules: nanoindentation technology, parallel plate compression technology, microcapillary technology, and deformation in flow. Subsequently, the mechanisms of regulating the mechanical properties of microcapsules and the progress of applying microcapsules with different degrees of softness and hardness in food, textile, and pharmaceutical formulations are discussed. These regulation mechanisms primarily include altering size and morphology, introducing sacrificial bonds, and construction of hybrid shells. Finally, we envision the future applications and research directions for microcapsules with tunable mechanical properties.
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Affiliation(s)
- Zuobing Xiao
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, No. 100 Haiquan Road, Shanghai 201418, China; School of Agriculture and Biology, Shanghai Jiaotong University, No. 800 Dongchuan Road, Shanghai 200240, China
| | - Liyuan Zhou
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, No. 100 Haiquan Road, Shanghai 201418, China
| | - Pingli Sun
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, No. 100 Haiquan Road, Shanghai 201418, China
| | - Zhibin Li
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, No. 100 Haiquan Road, Shanghai 201418, China
| | - Yanxiang Kang
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, No. 100 Haiquan Road, Shanghai 201418, China
| | - Mengxue Guo
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, No. 100 Haiquan Road, Shanghai 201418, China
| | - Yunwei Niu
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, No. 100 Haiquan Road, Shanghai 201418, China
| | - Di Zhao
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, No. 100 Haiquan Road, Shanghai 201418, China.
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3
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Mo F, Zhou P, Lin S, Zhong J, Wang Y. A Review of Conductive Hydrogel-Based Wearable Temperature Sensors. Adv Healthc Mater 2024:e2401503. [PMID: 38857480 DOI: 10.1002/adhm.202401503] [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: 04/24/2024] [Revised: 06/04/2024] [Indexed: 06/12/2024]
Abstract
Conductive hydrogel has garnered significant attention as an emergent candidate for diverse wearable sensors, owing to its remarkable and tailorable properties such as flexibility, biocompatibility, and strong electrical conductivity. These attributes make it highly suitable for various wearable sensor applications (e.g., biophysical, bioelectrical, and biochemical sensors) that can monitor human health conditions and provide timely interventions. Among these applications, conductive hydrogel-based wearable temperature sensors are especially important for healthcare and disease surveillance. This review aims to provide a comprehensive overview of conductive hydrogel-based wearable temperature sensors. First, this work summarizes different types of conductive fillers-based hydrogel, highlighting their recent developments and advantages as wearable temperature sensors. Next, this work discusses the sensing characteristics of conductive hydrogel-based wearable temperature sensors, focusing on sensitivity, dynamic stability, stretchability, and signal output. Then, state-of-the-art applications are introduced, ranging from body temperature detection and wound temperature detection to disease monitoring. Finally, this work identifies the remaining challenges and prospects facing this field. By addressing these challenges with potential solutions, this review hopes to shed some light on future research and innovations in this promising field.
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Affiliation(s)
- Fan Mo
- Department of Biotechnology and Food Engineering, Guangdong Technion-Israel Institute of Technology, 241 Daxue Road, Shantou, Guangdong, 515063, China
| | - Pengcheng Zhou
- Department of Chemical Engineering, Guangdong Technion-Israel Institute of Technology, 241 Daxue Road, Shantou, Guangdong, 515063, China
- Department of Chemical Engineering, Technion-Israel Institute of Technology, Haifa, 3200003, Israel
| | - Shihong Lin
- Department of Chemical Engineering, Guangdong Technion-Israel Institute of Technology, 241 Daxue Road, Shantou, Guangdong, 515063, China
| | - Junwen Zhong
- Department of Electromechanical Engineering, University of Macau, Macau, 999078, China
| | - Yan Wang
- Department of Chemical Engineering, Guangdong Technion-Israel Institute of Technology, 241 Daxue Road, Shantou, Guangdong, 515063, China
- Department of Chemical Engineering, Technion-Israel Institute of Technology, Haifa, 3200003, Israel
- Guangdong Provincial Key Laboratory of Materials and Technologies for Energy Conversion, Guangdong Technion-Israel Institute of Technology, 241 Daxue Road, Shantou, Guangdong, 515063, China
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O'Callaghan JA, Kamat NP, Vargo KB, Chattaraj R, Lee D, Hammer DA. A microfluidic platform for the synthesis of polymer and polymer-protein-based protocells. THE EUROPEAN PHYSICAL JOURNAL. E, SOFT MATTER 2024; 47:37. [PMID: 38829453 PMCID: PMC11147907 DOI: 10.1140/epje/s10189-024-00428-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Accepted: 04/22/2024] [Indexed: 06/05/2024]
Abstract
In this study, we demonstrate the fabrication of polymersomes, protein-blended polymersomes, and polymeric microcapsules using droplet microfluidics. Polymersomes with uniform, single bilayers and controlled diameters are assembled from water-in-oil-in-water double-emulsion droplets. This technique relies on adjusting the interfacial energies of the droplet to completely separate the polymer-stabilized inner core from the oil shell. Protein-blended polymersomes are prepared by dissolving protein in the inner and outer phases of polymer-stabilized droplets. Cell-sized polymeric microcapsules are assembled by size reduction in the inner core through osmosis followed by evaporation of the middle phase. All methods are developed and validated using the same glass-capillary microfluidic apparatus. This integrative approach not only demonstrates the versatility of our setup, but also holds significant promise for standardizing and customizing the production of polymer-based artificial cells.
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Affiliation(s)
- Jessica Ann O'Callaghan
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, 210 S 33rd Street, Philadelphia, PA, 19104, USA
| | - Neha P Kamat
- Department of Biongineering, University of Pennsylvania, 210 S 33rd Street, Philadelphia, PA, 19104, USA
| | - Kevin B Vargo
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, 210 S 33rd Street, Philadelphia, PA, 19104, USA
| | - Rajarshi Chattaraj
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, 210 S 33rd Street, Philadelphia, PA, 19104, USA
| | - Daeyeon Lee
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, 210 S 33rd Street, Philadelphia, PA, 19104, USA.
| | - Daniel A Hammer
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, 210 S 33rd Street, Philadelphia, PA, 19104, USA.
- Department of Biongineering, University of Pennsylvania, 210 S 33rd Street, Philadelphia, PA, 19104, USA.
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Oh MJ, Kim JH, Kim J, Lee S, Xiang Z, Liu Y, Koo H, Lee D. Drug-loaded adhesive microparticles for biofilm prevention on oral surfaces. J Mater Chem B 2024; 12:4935-4944. [PMID: 38683039 PMCID: PMC11111112 DOI: 10.1039/d4tb00134f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2024] [Accepted: 04/15/2024] [Indexed: 05/01/2024]
Abstract
The oral cavity, a warm and moist environment, is prone to the proliferation of microorganisms like Candida albicans (C. albicans), which forms robust biofilms on biotic and abiotic surfaces, leading to challenging infections. These biofilms are resistant to conventional treatments due to their resilience against antimicrobials and immune responses. The dynamic nature of the oral cavity, including the salivary flow and varying surface properties, complicates the delivery of therapeutic agents. To address these challenges, we introduce dendritic microparticles engineered for enhanced adhesion to dental surfaces and effective delivery of antifungal agents and antibiofilm enzymes. These microparticles are fabricated using a water-in-oil-in-water emulsion process involving a blend of poly(lactic-co-glycolic acid) (PLGA) random copolymer (RCP) and PLGA-b-poly(ethylene glycol) (PLGA-b-PEG) block copolymer (BCP), resulting in particles with surface dendrites that exhibit strong adhesion to oral surfaces. Our study demonstrates the potential of these adhesive microparticles for oral applications. The adhesion tests on various oral surfaces, including dental resin, hydroxyapatite, tooth enamel, and mucosal tissues, reveal superior adhesion of these microparticles compared to conventional spherical ones. Furthermore, the release kinetics of nystatin from these microparticles show a sustained release pattern that can kill C. albicans. The biodegradation of these microparticles on tooth surfaces and their efficacy in preventing fungal biofilms have also been demonstrated. Our findings highlight the effectiveness of adhesive microparticles in delivering therapeutic agents within the oral cavity, offering a promising approach to combat biofilm-associated infections.
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Affiliation(s)
- Min Jun Oh
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
- Department of Orthodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
| | - Jae-Hyun Kim
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
| | - Jaekyoung Kim
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
| | - Sunghee Lee
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
- Department of Orthodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
| | - Zhenting Xiang
- Department of Orthodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
| | - Yuan Liu
- Department of Orthodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
| | - Hyun Koo
- Department of Orthodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
- Center for Innovation & Precision Dentistry, School of Dental Medicine and School of Engineering and Applied Sciences, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Daeyeon Lee
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
- Center for Innovation & Precision Dentistry, School of Dental Medicine and School of Engineering and Applied Sciences, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
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Jeong H, Porello EAL, Rosario JG, Kuang D, Han SH, Sul JY, Lim B, Lee D, Kim J. SCO-pH: Microfluidic dynamic phenotyping platform for high-throughput screening of single cell acidification. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.05.08.593179. [PMID: 38766224 PMCID: PMC11100697 DOI: 10.1101/2024.05.08.593179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
Studies on the dynamics of single cell phenotyping have been hampered by the lack of quantitative high-throughput metabolism assays. Extracellular acidification, a prominent phenotype, yields significant insights into cellular metabolism, including tumorigenicity. Here, we develop a versatile microfluidic system for single cell optical pH analysis (SCO-pH), which compartmentalizes single cells in 140-pL droplets and immobilizes approximately 40,000 droplets in a two-dimensional array for temporal extracellular pH analysis. SCO-pH distinguishes cells undergoing hyperglycolysis induced by oligomycin A from untreated cells by monitoring their extracellular acidification. To facilitate pH sensing in each droplet, we encapsulate a cell-impermeable pH probe whose fluorescence intensities are quantified. Using this approach, we can differentiate hyperglycolytic cells and concurrently observe single cell heterogeneity in extracellular acidification dynamics. This high-throughput system will be useful in applications that require dynamic phenotyping of single cells with significant heterogeneity.
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Matias LLR, Damasceno KSFDSC, Pereira AS, Passos TS, Morais AHDA. Innovative Biomedical and Technological Strategies for the Control of Bacterial Growth and Infections. Biomedicines 2024; 12:176. [PMID: 38255281 PMCID: PMC10813423 DOI: 10.3390/biomedicines12010176] [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: 11/28/2023] [Revised: 01/05/2024] [Accepted: 01/11/2024] [Indexed: 01/24/2024] Open
Abstract
Antibiotics comprise one of the most successful groups of pharmaceutical products. Still, they have been associated with developing bacterial resistance, which has become one of the most severe problems threatening human health today. This context has prompted the development of new antibiotics or co-treatments using innovative tools to reverse the resistance context, combat infections, and offer promising antibacterial therapy. For the development of new alternatives, strategies, and/or antibiotics for controlling bacterial growth, it is necessary to know the target bacteria, their classification, morphological characteristics, the antibiotics currently used for therapies, and their respective mechanisms of action. In this regard, genomics, through the sequencing of bacterial genomes, has generated information on diverse genetic resources, aiding in the discovery of new molecules or antibiotic compounds. Nanotechnology has been applied to propose new antimicrobials, revitalize existing drug options, and use strategic encapsulating agents with their biochemical characteristics, making them more effective against various bacteria. Advanced knowledge in bacterial sequencing contributes to the construction of databases, resulting in advances in bioinformatics and the development of new antimicrobials. Moreover, it enables in silico antimicrobial susceptibility testing without the need to cultivate the pathogen, reducing costs and time. This review presents new antibiotics and biomedical and technological innovations studied in recent years to develop or improve natural or synthetic antimicrobial agents to reduce bacterial growth, promote well-being, and benefit users.
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Affiliation(s)
- Lídia Leonize Rodrigues Matias
- Biochemistry and Molecular Biology Postgraduate Program, Biosciences Center, Federal University of Rio Grande do Norte, Natal 59078-970, RN, Brazil;
| | | | - Annemberg Salvino Pereira
- Nutrition Course, Center for Health Sciences, Federal University of Rio Grande do Norte, Natal 59078-970, RN, Brazil;
| | - Thaís Souza Passos
- Nutrition Postgraduate Program, Center for Health Sciences, Federal University of Rio Grande do Norte, Natal 59078-970, RN, Brazil; (K.S.F.d.S.C.D.); (T.S.P.)
| | - Ana Heloneida de Araujo Morais
- Biochemistry and Molecular Biology Postgraduate Program, Biosciences Center, Federal University of Rio Grande do Norte, Natal 59078-970, RN, Brazil;
- Nutrition Postgraduate Program, Center for Health Sciences, Federal University of Rio Grande do Norte, Natal 59078-970, RN, Brazil; (K.S.F.d.S.C.D.); (T.S.P.)
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Ijaola AO, Subeshan B, Pham A, Uddin MN, Yang SY, Asmatulu E. Fabrication, Characterization, and In Vitro Cytotoxicity Assessment of Tri-Layered Multifunctional Scaffold for Effective Chronic Wound Healing. Bioengineering (Basel) 2023; 10:1148. [PMID: 37892878 PMCID: PMC10604823 DOI: 10.3390/bioengineering10101148] [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: 08/18/2023] [Revised: 09/22/2023] [Accepted: 09/27/2023] [Indexed: 10/29/2023] Open
Abstract
Chronic wounds have been a global health risk that demands intensive exploration. A tri-layered biomaterial scaffold has been developed for skin wounds. The top layer of the scaffold is superhydrophobic, and the bottom layer is hydrophilic, both of which were electrospun using recycled expanded polystyrene (EPS) and monofilament fishing line (MFL), respectively. The intermediate layer of the scaffold comprised hydrogel by cross-linking chitosan (CS) with polyethylene glycol. The surface morphology, surface chemistry, thermal degradation, and wettability characteristics of each layer of the scaffold were examined. Also, the antibacterial activity and in vitro cytotoxicity study on the combined tri-layered scaffold were assessed against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus). Data revealed exceptional water repellency of the heat-treated electrospun top superhydrophobic layer (TSL) with a high-water contact angle (WCA) of 172.44°. A TSL with 15 wt% of micro-/nano-inclusions had the best thermal stability above 400 °C. The bottom hydrophilic layer (BHL) displayed a WCA of 9.91°. Therapeutically, the synergistic effect of the combined tri-layered scaffold significantly inhibited bacteria growth by 70.5% for E. coli and 68.6% for S. aureus. Furthermore, cell viability is enhanced when PEG is included as part of the intermediate CS hydrogel layer (ICHL) composition.
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Affiliation(s)
- Ahmed Olanrewaju Ijaola
- Department of Mechanical Engineering, Wichita State University, 1845 Fairmount St., Wichita, KS 67260, USA; (A.O.I.); (B.S.); (A.P.)
- Department of Biological Sciences, Wichita State University, 1845 Fairmount St., Wichita, KS 67260, USA
| | - Balakrishnan Subeshan
- Department of Mechanical Engineering, Wichita State University, 1845 Fairmount St., Wichita, KS 67260, USA; (A.O.I.); (B.S.); (A.P.)
| | - Anh Pham
- Department of Mechanical Engineering, Wichita State University, 1845 Fairmount St., Wichita, KS 67260, USA; (A.O.I.); (B.S.); (A.P.)
| | - Md. Nizam Uddin
- Department of Engineering and Physics, Texas A&M University-Texarkana, 7101 University Ave, Texarkana, TX 75503, USA;
| | - Shang-You Yang
- Department of Biological Sciences, Wichita State University, 1845 Fairmount St., Wichita, KS 67260, USA
- Department of Orthopedic Surgery, University of Kansas School of Medicine-Wichita, Wichita, KS 67214, USA
| | - Eylem Asmatulu
- Department of Mechanical Engineering, Wichita State University, 1845 Fairmount St., Wichita, KS 67260, USA; (A.O.I.); (B.S.); (A.P.)
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Han W, Liu F, Liu G, Li H, Xu Y, Sun S. Research progress of physical transdermal enhancement techniques in tumor therapy. Chem Commun (Camb) 2023; 59:3339-3359. [PMID: 36815500 DOI: 10.1039/d2cc06219d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
The advancement and popularity of transdermal drug delivery (TDD) based on the physical transdermal enhancement technique (PTET) has opened a new paradigm for local tumor treatment. The drug can be directly delivered to the tumor site through the skin, thus avoiding the toxic side effects caused by the first-pass effect and achieving high patient compliance. Further development of PTETs has provided many options for antitumor drugs and laid the foundation for future applications of wearable closed-loop targeting drug delivery systems. In this highlight, the different types of PTETs and related mechanisms, and applications of PTET-related tumor detection and therapy are highlighted. According to their type and characteristics, PTETs are categorized as follows: (1) iontophoresis, (2) electroporation, (3) ultrasound, (4) thermal ablation, and (5) microneedles. PTET-related applications in the local treatment of tumors are categorized as follows: (1) melanoma, (2) breast tumor, (3) squamous cell carcinoma, (4) cervical tumor, and (5) others. The challenges and future prospects of existing PTETs are also discussed. This highlight will provide guidance for the design of PTET-based wearable closed-loop targeting drug delivery systems and personalized therapy for tumors.
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Affiliation(s)
- Weiqiang Han
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Fengyu Liu
- State Key Laboratory of Fine Chemicals, School of Chemistry, Dalian University of Technology, No. 2 Linggong Road, Ganjingzi District, Dalian 116023, P. R. China.
| | - Guoxin Liu
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Hongjuan Li
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Yongqian Xu
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Shiguo Sun
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, China.
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Tai Z, Zheng M, Yang Y, Xie C, Li Z, Xu C. Temperature controlled microcapsule loaded with Perilla essential oil and its application in preservation of peaches. Front Nutr 2023; 10:1087605. [PMID: 36814505 PMCID: PMC9939902 DOI: 10.3389/fnut.2023.1087605] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 01/09/2023] [Indexed: 02/08/2023] Open
Abstract
In this study, Perilla frutescens essential oil (PEO) loaded microcapsules (PEOM) were successfully prepared and their thermal stability, temperature-responsive releasing effect, antioxidant activity, antibacterial activity, and preservation of peach were systematically investigated. PEOM showed excellent encapsulation efficiency (91.5%) with a core-shell ratio of 1.4:1 and exhibited high thermal stability, indicating that PEOM could effectively maintain PEO release rate. In vitro assays indicated that the optimal kinetic model for PEO release fitted well with first order with a diffusion mechanism. A high level of antioxidant and antibacterial activity of PEOM was maintained. In addition, owing to its sustained release, PEOM could prolong the shelf life of peaches significantly. Therefore, PEOM has potential application and development prospects in the field of food preservation.
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Affiliation(s)
- Zhigang Tai
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - Minjie Zheng
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - Ye Yang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - Cheng Xie
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - Zhenjie Li
- Yunnan Key Laboratory of Tobacco Chemistry, R&D Center of China Tobacco Yunnan Industry Co., Ltd., Kunming, China
| | - Chunping Xu
- College of Food and Bioengineering, Zhengzhou University of Light Industry, Zhengzhou, China
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Al Jundi S, Martinez JR, Cresta J, Yousefi F, DeSantis G, Thoonkuzhy M, Rabut E, Mohanraj B, Mauck RL, Dodge GR. Identifying small molecules for protecting chondrocyte function and matrix integrity after controlled compressive injury. OSTEOARTHRITIS AND CARTILAGE OPEN 2022; 4:100289. [PMID: 36474951 PMCID: PMC9718264 DOI: 10.1016/j.ocarto.2022.100289] [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: 12/02/2021] [Revised: 05/30/2022] [Accepted: 06/14/2022] [Indexed: 10/17/2022] Open
Abstract
Objective Articular cartilage injury is central for the development of post-traumatic osteoarthritis (PTOA). With few disease-modifying therapies successful at offsetting progressive osteoarthritis (OA), our goal is to use a high throughput screening platform of cartilage injury to identify novel chondroprotective compounds. Targeting articular cartilage damage immediately after injury remains a promising therapeutic strategy to overcome irreversible tissue damage. Method We constructed a single impact-cartilage screening method using a multi-platen system that simultaneously impacts 48 samples and makes use of engineered cartilage tissue analogs (known as CTAs). Drug libraries were screened and assessed for their ability to alter two crucial biological responses to impact injuries, namely matrix degradation and cell stress. Results Over 500 small molecules were screened for their ability to alter proteoglycan loss, matrix metalloproteinase activity, and cell stress or death. Fifty-five compounds passed through secondary screening and were from commercial libraries of natural and redox, stem cell related compounds, as well as protease, kinase and phosphatase inhibitors. Through secondary screening, 16 promising candidates exhibited activity on one or more critical function of chondrocytes. While many are mechanistically known compounds, their function in joint diseases is not known. Conclusion This platform was validated for screening drug activity against a tissue engineered model of PTOA. Multiple compounds identified in this manner have potential application as early protective therapy for treating PTOA, and require further study. We propose this screening platform can identify novel molecules that act on early chondrocyte responses to injury and provide an invaluable tool for therapeutic development.
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Affiliation(s)
- Saleh Al Jundi
- McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Perelman School of Medicine, USA
| | - Jerahme R. Martinez
- Translational Musculoskeletal Research Center, Crescenz VA Medical Center, Philadelphia, PA, University of Pennsylvania, Philadelphia, PA, USA
| | - Jake Cresta
- McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Perelman School of Medicine, USA
- Translational Musculoskeletal Research Center, Crescenz VA Medical Center, Philadelphia, PA, University of Pennsylvania, Philadelphia, PA, USA
| | - Farzad Yousefi
- McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Perelman School of Medicine, USA
| | - Gabriel DeSantis
- McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Perelman School of Medicine, USA
| | - Matthew Thoonkuzhy
- McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Perelman School of Medicine, USA
| | - Emilie Rabut
- McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Perelman School of Medicine, USA
- Translational Musculoskeletal Research Center, Crescenz VA Medical Center, Philadelphia, PA, University of Pennsylvania, Philadelphia, PA, USA
| | - Bhavana Mohanraj
- McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Perelman School of Medicine, USA
| | - Robert L. Mauck
- McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Perelman School of Medicine, USA
- Translational Musculoskeletal Research Center, Crescenz VA Medical Center, Philadelphia, PA, University of Pennsylvania, Philadelphia, PA, USA
- Mechano Therapeutics, LLC, Philadelphia, PA, USA
| | - George R. Dodge
- McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Perelman School of Medicine, USA
- Translational Musculoskeletal Research Center, Crescenz VA Medical Center, Philadelphia, PA, University of Pennsylvania, Philadelphia, PA, USA
- Mechano Therapeutics, LLC, Philadelphia, PA, USA
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12
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Zlotnick HM, Locke R, Hemdev S, Stoeckl BD, Gupta S, Peredo AP, Steinberg DR, Carey JL, Lee D, Dodge GR, Mauck RL. Gravity-based patterning of osteogenic factors to preserve bone structure after osteochondral injury in a large animal model. Biofabrication 2022; 14. [PMID: 35714576 DOI: 10.1088/1758-5090/ac79cd] [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: 09/24/2021] [Accepted: 06/17/2022] [Indexed: 11/12/2022]
Abstract
Chondral and osteochondral repair strategies are limited by adverse bony changes that occur after injury. Bone resorption can cause entire scaffolds, engineered tissues, or even endogenous repair tissues to subside below the cartilage surface. To address this translational issue, we fabricated thick-shelled poly(D,L-lactide-co-glycolide) (PLGA) microcapsules containing the pro-osteogenic agents triiodothyronine and ß-glycerophosphate, and delivered these microcapsules in a large animal model of osteochondral injury to preserve bone structure. We demonstrate that the developed microcapsules ruptured in vitro under increasing mechanical loads, and readily sink within a liquid solution, enabling gravity-based patterning along the osteochondral surface. In a large animal, these mechanically-actived microcapsules (MAMCs) were assessed through two different delivery strategies. Intra-articular injection of control MAMCs enabled fluorescent quantification of MAMC rupture and cargo release in a synovial joint setting over time in vivo. This joint-wide injection also confirmed that the MAMCs do not elicit an inflammatory response. In the contralateral hindlimbs, chondral defects were created, MAMCs were patterned in situ, and nanofracture (Nfx), a clinically utilized method to promote cartilage repair, was performed. The NFx holes enabled marrow-derived stromal cells to enter the defect area and served as repeatable bone injury sites to monitor over time. Animals were evaluated 1 and 2 weeks after injection and surgery. Analysis of injected MAMCs showed that bioactive cargo was released in a controlled fashion over 2 weeks. A bone fluorochrome label injected at the time of surgery displayed maintenance of mineral labeling in the therapeutic group, but resorption in both control groups. Alkaline phosphatase (AP) staining at the osteochondral interface revealed higher AP activity in defects treated with therapeutic MAMCs. Overall, this study develops a gravity-based approach to pattern bioactive factors along the osteochondral interface, and applies this novel biofabrication strategy to preserve bone structure after osteochondral injury.
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Affiliation(s)
- Hannah M Zlotnick
- Department of Bioengineering , University of Pennsylvania School of Engineering and Applied Science, 210 South 33rd Street, Philadelphia, Pennsylvania, 19104, UNITED STATES
| | - Ryan Locke
- Department of Orthopaedic Surgery, University of Pennsylvania Perelman School of Medicine, 3450 Hamilton Walk, Philadelphia, Pennsylvania, 19104, UNITED STATES
| | - Sanjana Hemdev
- Department of Biotechnology, University of Pennsylvania School of Engineering and Applied Science, 220 South 33rd Street, Philadelphia, Pennsylvania, 19104, UNITED STATES
| | - Brendan D Stoeckl
- Department of Bioengineering , University of Pennsylvania School of Engineering and Applied Science, 210 South 33rd Street, Philadelphia, Pennsylvania, 19104, UNITED STATES
| | - Sachin Gupta
- Department of Orthopaedic Surgery, University of Pennsylvania Perelman School of Medicine, 3450 Hamilton Walk, Philadelphia, Pennsylvania, 19104, UNITED STATES
| | - Ana P Peredo
- Department of Bioengineering , University of Pennsylvania School of Engineering and Applied Science, 210 South 33rd Street, Philadelphia, Pennsylvania, 19104, UNITED STATES
| | - David R Steinberg
- Department of Orthopaedic Surgery, University of Pennsylvania Perelman School of Medicine, 3450 Hamilton Walk, Philadelphia, Pennsylvania, 19104, UNITED STATES
| | - James L Carey
- Orthopaedic Surgery, University of Pennsylvania Perelman School of Medicine, 3450 Hamilton Walk, Philadelphia, Pennsylvania, 19104, UNITED STATES
| | - Daeyeon Lee
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania School of Engineering and Applied Science, 210 South 33rd Street, Philadelphia, Pennsylvania, 19104, UNITED STATES
| | - George R Dodge
- Department of Orthopaedic Surgery, University of Pennsylvania Perelman School of Medicine, 3450 Hamilton Walk, Philadelphia, Pennsylvania, 19104, UNITED STATES
| | - Robert L Mauck
- Department of Orthopaedic Surgery , University of Pennsylvania Perelman School of Medicine, 3450 Hamilton Walk, Philadelphia, Pennsylvania, 19104, UNITED STATES
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13
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Microencapsulation for Functional Textile Coatings with Emphasis on Biodegradability—A Systematic Review. COATINGS 2021. [DOI: 10.3390/coatings11111371] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The review provides an overview of research findings on microencapsulation for functional textile coatings. Methods for the preparation of microcapsules in textiles include in situ and interfacial polymerization, simple and complex coacervation, molecular inclusion and solvent evaporation from emulsions. Binders play a crucial role in coating formulations. Acrylic and polyurethane binders are commonly used in textile finishing, while organic acids and catalysts can be used for chemical grafting as crosslinkers between microcapsules and cotton fibres. Most of the conventional coating processes can be used for microcapsule-containing coatings, provided that the properties of the microcapsules are appropriate. There are standardised test methods available to evaluate the characteristics and washfastness of coated textiles. Among the functional textiles, the field of environmentally friendly biodegradable textiles with microcapsules is still at an early stage of development. So far, some physicochemical and physical microencapsulation methods using natural polymers or biodegradable synthetic polymers have been applied to produce environmentally friendly antimicrobial, anti-inflammatory or fragranced textiles. Standardised test methods for evaluating the biodegradability of textile materials are available. The stability of biodegradable microcapsules and the durability of coatings during the use and care of textiles still present several challenges that offer many opportunities for further research.
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