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Dong T, Hu J, Dong Y, Yu Z, Liu C, Wang G, Chen S. Advanced biomedical and electronic dual-function skin patch created through microfluidic-regulated 3D bioprinting. Bioact Mater 2024; 40:261-274. [PMID: 38973991 PMCID: PMC11226729 DOI: 10.1016/j.bioactmat.2024.06.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2024] [Revised: 06/06/2024] [Accepted: 06/07/2024] [Indexed: 07/09/2024] Open
Abstract
Artificial skin involves multidisciplinary efforts, including materials science, biology, medicine, and tissue engineering. Recent studies have aimed at creating skins that are multifunctional, intelligent, and capable of regenerating tissue. In this work, we present a specialized 3D printing ink composed of polyurethane and bioactive glass (PU-BG) and prepare dual-function skin patch by microfluidic-regulated 3D bioprinting (MRBP) technique. The MRBP endows the skin patch with a highly controlled microstructure and superior strength. Besides, an asymmetric tri-layer is further constructed, which promotes cell attachment and growth through a dual transport mechanism based on hydrogen bonds and gradient structure from hydrophilic to superhydrophilic. More importantly, by combining the features of biomedical skin with electronic skin (e-skin), we achieved a biomedical and electronic dual-function skin patch. In vivo experiments have shown that this skin patch can enhance hemostasis, resist bacterial growth, stimulate the regeneration of blood vessels, and accelerate the healing process. Meanwhile, it also mimics the sensory functions of natural skin to realize signal detection, where the sensitivity reached up to 5.87 kPa-1, as well as cyclic stability (over 500 cycles), a wide detection range of 0-150 kPa, high pressure resolution of 0.1 % under the pressure of 100 kPa. This work offers a versatile and effective method for creating dual-function skin patches and provide new insights into wound healing and tissue repair, which have significant implications for clinical applications.
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Affiliation(s)
- Ting Dong
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Jiangsu Key Laboratory of Fine Chemicals and Functional Polymer Materials, Nanjing Tech University, Nanjing, 210009, China
| | - Jie Hu
- Department of General Surgery, Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, China
| | - Yue Dong
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Jiangsu Key Laboratory of Fine Chemicals and Functional Polymer Materials, Nanjing Tech University, Nanjing, 210009, China
| | - Ziyi Yu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Jiangsu Key Laboratory of Fine Chemicals and Functional Polymer Materials, Nanjing Tech University, Nanjing, 210009, China
| | - Chang Liu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Jiangsu Key Laboratory of Fine Chemicals and Functional Polymer Materials, Nanjing Tech University, Nanjing, 210009, China
| | - Gefei Wang
- Department of General Surgery, Affiliated Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, China
| | - Su Chen
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Jiangsu Key Laboratory of Fine Chemicals and Functional Polymer Materials, Nanjing Tech University, Nanjing, 210009, China
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Zhou L, Meng H, Guo W, Liu F, Hu Z, Ren X, Qu W, Gao G. Anthocyanidin-Loaded Superabsorbent Self-Pumping Dressings for Macrophage Immunomodulation and Diabetic Wound Healing. ACS APPLIED MATERIALS & INTERFACES 2024; 16:41949-41959. [PMID: 39093717 DOI: 10.1021/acsami.4c09902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/04/2024]
Abstract
Management of diabetic chronic wound exudate is a serious challenge in healthcare worldwide since it is related to the speed of diabetic wound healing. However, current foam dressings not only absorb fluid to generate swelling and compress the wound to hinder wound healing but also are very thick and less comfortable to use. Herein, a superabsorbent self-pumping ultrathin dressing is reported to accelerate diabetic wound healing by achieving superior exudate absorption and management in an ultrathin state. The self-pumping dressing is composed of a drainage layer loaded with anthocyanidin and a thermoplastic polyurethane absorbent layer embedded with superabsorbent particles. The dressing realizes the self-pumping process of unidirectional exudate draining to the absorption layer through the drainage layer without significant dressing swelling to compress the diabetic wound. The dressing is experimentally proven to unidirectionally drain excessive exudate with inflammatory factors and modulate the conversion of macrophages from M1 to M2 in diabetic wounds, thereby promoting the healing of diabetic skin ulcers faster than commercial foam dressings. Therefore, the dressing provides a new idea and novel method for accelerating diabetic skin ulcer healing.
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Affiliation(s)
- Lubin Zhou
- Polymeric and Soft Materials Laboratory, Advanced Institute of Materials Science, School of Chemical Engineering, Changchun University of Technology, Changchun, Jilin 130012, China
| | - Hongqi Meng
- Department of Hand Surgery, The Second Hospital of Jilin University, Changchun, Jilin 130041, China
| | - Wenlai Guo
- Department of Hand Surgery, The Second Hospital of Jilin University, Changchun, Jilin 130041, China
| | - Fan Liu
- Polymeric and Soft Materials Laboratory, Advanced Institute of Materials Science, School of Chemical Engineering, Changchun University of Technology, Changchun, Jilin 130012, China
| | - Zhen Hu
- Polymeric and Soft Materials Laboratory, Advanced Institute of Materials Science, School of Chemical Engineering, Changchun University of Technology, Changchun, Jilin 130012, China
| | - Xiuyan Ren
- Polymeric and Soft Materials Laboratory, Advanced Institute of Materials Science, School of Chemical Engineering, Changchun University of Technology, Changchun, Jilin 130012, China
| | - Wenrui Qu
- Department of Hand Surgery, The Second Hospital of Jilin University, Changchun, Jilin 130041, China
| | - Guanghui Gao
- Polymeric and Soft Materials Laboratory, Advanced Institute of Materials Science, School of Chemical Engineering, Changchun University of Technology, Changchun, Jilin 130012, China
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Deng J, Hu M, Cai Z, Yu W, Zhan L, Zhu X, Ke Q, Gao R, Zhou X, Liu H, Li J, Huang C. A Highly Stable, Multifunctional Janus Dressing for Treating Infected Wounds. Adv Healthc Mater 2024:e2401345. [PMID: 38973206 DOI: 10.1002/adhm.202401345] [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: 04/12/2024] [Revised: 06/21/2024] [Indexed: 07/09/2024]
Abstract
The limited and unstable absorption of excess exudate is a major challenge during the healing of infected wounds. In this study, a highly stable, multifunctional Janus dressing with unidirectional exudate transfer capacity is fabricated based on a single poly(lactide caprolactone) (PLCL). The success of this method relies on an acid hydrolysis reaction that transforms PLCL fibers from hydrophobic to hydrophilic in situ. The resulting interfacial affinity between the hydrophilic/phobic PLCL fibers endows the Janus structure with excellent unidirectional liquid transfer and high structural stability against repeated stretching, bending, and twisting. Various other functions, including wound status detection, antibacterial, antioxidant, and anti-inflammatory properties, are also integrated into the dressing by incorporating phenol red and epigallocatechin gallate. An in vivo methicillin-resistant Staphylococcus aureus-infected wound model confirms that the Janus dressing, with the capability to remove exudate from the infected site, not only facilitates epithelialization and collagen deposition, but also ensures low inflammation and high angiogenesis, thus reaching an ideal closure rate up to 98.4% on day 14. The simple structure, multiple functions, and easy fabrication of the dressing may offer a promising strategy for treating chronic wounds, rooted in the challenges of bacterial infection, excessive exudate, and persistent inflammation.
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Affiliation(s)
- Jixia Deng
- Shanghai Frontiers Science Center of Advanced Textiles, College of Textiles, Donghua University, Shanghai, 201620, China
| | - Miao Hu
- Department of Orthopedics, General Hospital of Southern Theatre Command of PLA, Guangzhou, 510010, China
| | - Zhuyun Cai
- Department of Orthopedics, Second Affiliated Hospital of Naval Medical University, Shanghai, 200003, China
| | - Wenhua Yu
- Shanghai Frontiers Science Center of Advanced Textiles, College of Textiles, Donghua University, Shanghai, 201620, China
| | - Lei Zhan
- Shanghai Frontiers Science Center of Advanced Textiles, College of Textiles, Donghua University, Shanghai, 201620, China
| | - Xueying Zhu
- Shanghai Frontiers Science Center of Advanced Textiles, College of Textiles, Donghua University, Shanghai, 201620, China
| | - Qinfei Ke
- Shanghai Frontiers Science Center of Advanced Textiles, College of Textiles, Donghua University, Shanghai, 201620, China
| | - Rui Gao
- Department of Orthopedics, Second Affiliated Hospital of Naval Medical University, Shanghai, 200003, China
| | - Xuhui Zhou
- Department of Orthopedics, Second Affiliated Hospital of Naval Medical University, Shanghai, 200003, China
| | - Honggang Liu
- Tiansheng Nonwoven Technology Co., Ltd, Zhejiang, 321035, China
| | - Juan Li
- Tiansheng Nonwoven Technology Co., Ltd, Zhejiang, 321035, China
| | - Chen Huang
- Shanghai Frontiers Science Center of Advanced Textiles, College of Textiles, Donghua University, Shanghai, 201620, China
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Meng H, Zhao Y, Cai H, You D, Wang Y, Wu S, Wang Y, Guo W, Qu W. Hydrogels Containing Chitosan-Modified Gold Nanoparticles Show Significant Efficacy in Healing Diabetic Wounds Infected with Antibiotic-Resistant Bacteria. Int J Nanomedicine 2024; 19:1539-1556. [PMID: 38406603 PMCID: PMC10891276 DOI: 10.2147/ijn.s448282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Accepted: 02/05/2024] [Indexed: 02/27/2024] Open
Abstract
Purpose Persistent Infections and inflammation are associated with impaired wound healing in diabetic patients. There is a pressing demand for innovative antimicrobial strategies to address infections arising from antibiotic-resistant bacteria. Polymer-modified gold nanoparticles (AuNPs) show broad-spectrum antibacterial properties and significant biocompatibility. This study investigated the antibacterial and wound healing efficacy of hydrogel dressings conjugated with chitosan-AuNPs in diabetic model rats. Methods Chitosan (CS)-functionalized gold nanoparticles (CS-AuNPs) were incorporated into hydrogel dressings (Gel/CS-AuNPs), which were formulated through the chemical cross-linking of gelatin with sodium alginate (SA). The basic characteristics of Gel/CS-AuNPs were analyzed by TEM, SEM, XRD, and UV-visible spectra. Rheological, swelling, degradation, and adhesive properties of Gel/CS-AuNPs were also determined. In vitro anti-bactericidal effects of the Gel/CS-AuNPs were analyzed with E. coli, S. aureus, and MRSA. In vitro biocompatibility of the Gel/CS-AuNPs was evaluated using NIH3T3 cells. The in vivo antibacterial and wound healing efficacy of the Gel/CS-AuNPs was analyzed in the diabetic wound model rats. Histological and immunofluorescence staining were performed to determine the status of angiogenesis, epithelization, inflammation response, and collagen deposition. Results Gel/CS-AuNPs demonstrated significant high biodegradability, water absorption bactericidal, and biocompatibility, and slight adhesiveness. Gel/CS-AuNPs exhibited pronounced antibacterial efficacy against gram-negative, gram-positive, and MRSA in a CS-AuNPs-dose-dependent manner. In the diabetic wound model rats, Gel/CS-AuNPs effectively killed MRSA, reduced inflammation, and promoted angiogenesis and collagen deposition and remodeling at the wound site. As a result, Gel/CS-AuNPs expedited the recovery process for infected diabetic wounds. Among the hydrogels with different CS-AuNPs concentrations, Gel/CS-Au25 with 25% CS-AuNPs showed the best bactericidal and wound healing performance. Conclusion Gel/CS-AuNPs significantly improve the healing of MRSA-infected diabetic wounds in the rat model. Therefore, Gel/CS-AuNPs show great promise for the treatment of diabetic infection wound healing.
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Affiliation(s)
- Hongqi Meng
- Department of Hand Surgery, The Second Hospital of Jilin University, Changchun, 130041, People’s Republic of China
| | - Ying Zhao
- Department of Hand Surgery, The Second Hospital of Jilin University, Changchun, 130041, People’s Republic of China
| | - Hang Cai
- Department of Pharmacy, The Second Hospital of Jilin University, Changchun, 130041, People’s Republic of China
| | - Di You
- Department of Anesthesiology, China-Japan Union Hospital of Jilin University, Changchun, 130031, People’s Republic of China
| | - Ying Wang
- Institute of Neural Tissue Engineering, Mudanjiang College of Medicine, Mudanjiang, 157011, People’s Republic of China
| | - Siyu Wu
- Department of Hand Surgery, The Second Hospital of Jilin University, Changchun, 130041, People’s Republic of China
| | - Yixin Wang
- Department of Plastic Surgery, First Hospital of Jilin University, Changchun, 130021, People’s Republic of China
| | - Wenlai Guo
- Department of Hand Surgery, The Second Hospital of Jilin University, Changchun, 130041, People’s Republic of China
| | - Wenrui Qu
- Department of Hand Surgery, The Second Hospital of Jilin University, Changchun, 130041, People’s Republic of China
- Joint International Research Laboratory of Ageing Active Strategy and Bionic Health in Northeast Asia of Ministry of Education, Jilin University, Changchun, 130041, People’s Republic of China
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Zheng Q, Xi Y, Weng Y. Functional electrospun nanofibers: fabrication, properties, and applications in wound-healing process. RSC Adv 2024; 14:3359-3378. [PMID: 38259986 PMCID: PMC10801448 DOI: 10.1039/d3ra07075a] [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: 10/17/2023] [Accepted: 12/28/2023] [Indexed: 01/24/2024] Open
Abstract
Electrostatic spinning as a technique for producing nanoscale fibers has recently attracted increasing attention due to its simplicity, versatility, and loadability. Nanofibers prepared by electrostatic spinning have been widely studied, especially in biomedical applications, because of their high specific surface area, high porosity, easy size control, and easy surface functionalization. Wound healing is a highly complex and dynamic process that is a crucial step in the body's healing process to recover from tissue injury or other forms of damage. Single-component nanofibers are more or less limited in terms of structural properties and do not fully satisfy various needs of the materials. This review aims to provide an in-depth analysis of the literature on the use of electrostatically spun nanofibers to promote wound healing, to overview the infinite possibilities for researchers to tap into their biomedical applications through functional composite modification of nanofibers for advanced and multifunctional materials, and to propose directions and perspectives for future research.
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Affiliation(s)
- Qianlan Zheng
- College of Light Industry Science and Engineering, Beijing Technology and Business University Beijing 100048 China
| | - Yuewei Xi
- College of Light Industry Science and Engineering, Beijing Technology and Business University Beijing 100048 China
- Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of Plastics, Beijing Technology and Business University Beijing 100048 China
| | - Yunxuan Weng
- College of Light Industry Science and Engineering, Beijing Technology and Business University Beijing 100048 China
- Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of Plastics, Beijing Technology and Business University Beijing 100048 China
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