1
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Yu YL, Zheng JC, Duan P, Cheng YN, Zhang H, Zheng L, Yu ZR, Xu JM, Hu HX, Pan ZY. A gelatin methacryloyl (GelMA) treated with gallic acid and coated with specially designed nanoparticles derived from ginseng enhances the healing of wounds in diabetic rats. Int J Biol Macromol 2024; 274:133372. [PMID: 38914387 DOI: 10.1016/j.ijbiomac.2024.133372] [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: 03/26/2024] [Revised: 06/16/2024] [Accepted: 06/21/2024] [Indexed: 06/26/2024]
Abstract
Due to persistent inflammation and oxidative stress reactions, achieving drug absorption in diabetic wounds is challenging. To overcome this problem, our article presents a composite hydrogel, GelMA-GA/DMOG@GDNP, which consists of gelatin methacryloyl (GelMA) treated with gallic acid (GA) and encapsulating ginseng-derived nanoparticles (GDNPs) loaded with dimethyloxallyl glycine (DMOG). The composite hydrogel demonstrates excellent biocompatibility. In laboratory settings, the hydrogel inhibits the production of nitric oxide synthase 2 (iNOS) in mouse immune cells (RAW264.7 cells), enhances the growth and migration of mouse connective tissue cells (L929 cells) and human endothelial cells (HUVECs), and promotes tube formation in HUVECs. In a rat model of type 1 diabetes-induced wounds, the composite hydrogel attenuates inflammatory reactions, facilitates the formation of fibres and blood vessels, accelerates wound healing, and elucidates specific pathway mechanisms through transcriptome sequencing. Therefore, the GelMA-GA/DMOG@GDNP hydrogel can serve as a safe and efficient wound dressing to regulate the inflammatory response, promote collagen fiber and blood vessel formation, and accelerate wound healing. These findings suggest that utilizing this multifunctional engineered nanoparticle-loaded hydrogel in a clinical setting may be a promising strategy for diabetic wound healing.
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Affiliation(s)
- Yong-Le Yu
- Department of Orthopedics Trauma and Microsurgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Jing-Cheng Zheng
- The First School of Clinical Medicine, Southern Medical University, Guangzhou 510000, China
| | - Ping Duan
- Department of Orthopedics Trauma and Microsurgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Yan-Nan Cheng
- Department of Orthopedics Trauma and Microsurgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Hao Zhang
- Department of Orthopedics Trauma and Microsurgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Lin Zheng
- Department of Orthopedics Trauma and Microsurgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Zi-Rui Yu
- Department of Orthopedics Trauma and Microsurgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Jun-Miao Xu
- Department of Orthopedics Trauma and Microsurgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Hao-Xing Hu
- Department of Orthopedics Trauma and Microsurgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Zhen-Yu Pan
- Department of Orthopedics Trauma and Microsurgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China.
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2
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Ge Y, Wang Q, Yao Y, Xin Q, Sun J, Chen W, Lin Y, Cai X. Framework Nucleic Acids-Based VEGF Signaling Activating System for Angiogenesis: A Dual Stimulation Strategy. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2308701. [PMID: 38460168 DOI: 10.1002/advs.202308701] [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: 11/13/2023] [Revised: 12/29/2023] [Indexed: 03/11/2024]
Abstract
Angiogenesis is crucial for tissue engineering, wound healing, and regenerative medicine. Nanomaterials constructed based on specific goals can be employed to activate endogenous growth factor-related signaling. In this study, based on the conventional single-stranded DNA self-assembly into tetrahedral framework nucleic acids (tFNAs), the Apt02 nucleic acid aptamer and dimethyloxallyl glycine (DMOG) small molecule are integrated into a complex via a template-based click chemistry reaction and toehold-mediated strand displacement reaction. Thus, being able to simulate the VEGF (vascular endothelial growth factor) function and stabilize HIF (hypoxia-inducible factor), a functional whole is constructed and applied to angiogenesis. Cellular studies demonstrate that the tFNAs-Apt02 complex (TAC) has a conspicuous affinity to human umbilical vein endothelial cells (HUVECs). Further incubation with DMOG yields the tFNAs-Apt02-DMOG complex (TACD), which promotes VEGF secretion, in vitro blood vessel formation, sprouting, and migration of HUVECs. Additionally, TACD enhances angiogenesis by upregulating the VEGF/VEGFR and HIF signaling pathways. Moreover, in a diabetic mouse skin defect repair process, TACD increases blood vessel formation and collagen deposition, therefore accelerating wound healing. The novel strategy simulating VEGF and stabilizing HIF promotes blood-vessel formation in vivo and in vitro and has the potential for broad applications in the vascularization field.
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Affiliation(s)
- Yichen Ge
- State Key Laboratory of Oral Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, 610041, P. R. China
| | - Qingxuan Wang
- State Key Laboratory of Oral Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, 610041, P. R. China
| | - Yangxue Yao
- State Key Laboratory of Oral Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, 610041, P. R. China
| | - Qin Xin
- State Key Laboratory of Oral Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, 610041, P. R. China
| | - Jiafei Sun
- State Key Laboratory of Oral Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, 610041, P. R. China
| | - Wen Chen
- State Key Laboratory of Oral Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, 610041, P. R. China
| | - Yunfeng Lin
- State Key Laboratory of Oral Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, 610041, P. R. China
- Sichuan Provincial Engineering Research Center of Oral Biomaterials, Chengdu, Sichuan, 610041, P. R. China
| | - Xiaoxiao Cai
- State Key Laboratory of Oral Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, 610041, P. R. China
- Sichuan Provincial Engineering Research Center of Oral Biomaterials, Chengdu, Sichuan, 610041, P. R. China
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3
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Yin L, Tang Q, Ke Q, Zhang X, Su J, Zhong H, Fang L. Sequential Anti-Infection and Proangiogenesis of DMOG@ZIF-8/Gelatin-PCL Electrospinning Dressing for Chronic Wound Healing. ACS APPLIED MATERIALS & INTERFACES 2023; 15:48903-48912. [PMID: 37877332 DOI: 10.1021/acsami.3c09584] [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: 10/26/2023]
Abstract
Bacterial infection and insufficient neovascularization are two major obstacles to the healing of chronic wounds. Here, we present an antibacterial and proangiogenic dressing by encapsulating dimethyloxalylglycine (DMOG) in zeolitic imidazolate framework-8 (ZIF-8) and electrospinning it with gelatin-polycaprolactone (Gel-PCL). As Gel-PCL nanofibers degrade, ZIF-8 nanoparticles decompose, sequentially releasing bactericidal zinc ions and angiogenic DMOG molecules. This cascade process matches the wound-healing stages, ensuring suitable bioavailability and an effective duration of the active components while minimizing their side effects. In vitro, zinc ions released from the dressing (2.5% DMOG@ZIF-8) can eliminate over 90% of Escherichia coli and Staphylococcus aureus without compromising fibroblast cell proliferation and adhesion. In vivo, the dressing can heal skin wounds in Staphylococcus aureus-infected diabetic rats within 2 weeks, facilitated by the DMOG molecules discharged from ZIF-8 (loading rate 21.3%). Immunohistochemical analysis confirmed the regulated expression of factors by zinc ions and DMOG molecules. This work provides new insights into the design of multifunctional dressings for the treatment of chronic wounds.
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Affiliation(s)
- Lei Yin
- School of Materials Science and Engineering, South China University of Technology, Wushan 381, Tianhe District, Guangzhou 510641, China
- National Engineering Research Center for Tissue Restoration and Reconstruction, Guangzhou Higher Education Mega Center, South China University of Technology, Panyu District, Guangzhou 510006, China
| | - Qiwen Tang
- School of Materials Science and Engineering, South China University of Technology, Wushan 381, Tianhe District, Guangzhou 510641, China
- National Engineering Research Center for Tissue Restoration and Reconstruction, Guangzhou Higher Education Mega Center, South China University of Technology, Panyu District, Guangzhou 510006, China
| | - Qi Ke
- School of Materials Science and Engineering, South China University of Technology, Wushan 381, Tianhe District, Guangzhou 510641, China
- National Engineering Research Center for Tissue Restoration and Reconstruction, Guangzhou Higher Education Mega Center, South China University of Technology, Panyu District, Guangzhou 510006, China
| | - Xinyi Zhang
- School of Materials Science and Engineering, South China University of Technology, Wushan 381, Tianhe District, Guangzhou 510641, China
- National Engineering Research Center for Tissue Restoration and Reconstruction, Guangzhou Higher Education Mega Center, South China University of Technology, Panyu District, Guangzhou 510006, China
| | - Jianyu Su
- China-Singapore International Joint Research Institute, China-Singapore Smart Park, Huangpu District, Guangzhou 510555, China
| | - Hua Zhong
- Department of Orthopaedics, The Fifth Affiliated Hospital, Southern Medical University, Congcheng 566, Conghua District, Guangzhou 510900, China
| | - Liming Fang
- School of Materials Science and Engineering, South China University of Technology, Wushan 381, Tianhe District, Guangzhou 510641, China
- National Engineering Research Center for Tissue Restoration and Reconstruction, Guangzhou Higher Education Mega Center, South China University of Technology, Panyu District, Guangzhou 510006, China
- China-Singapore International Joint Research Institute, China-Singapore Smart Park, Huangpu District, Guangzhou 510555, China
- Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced Manufacturing, South China University of Technology, Wushan 381, Tianhe District, Guangzhou 510641, China
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4
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Chen J, Yang R, Yin J, Shi B, Huang H. Current insights in the preclinical study of palatal wound healing and oronasal fistula after cleft palate repair. Front Cell Dev Biol 2023; 11:1271014. [PMID: 37900273 PMCID: PMC10601468 DOI: 10.3389/fcell.2023.1271014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Accepted: 10/03/2023] [Indexed: 10/31/2023] Open
Abstract
Poor palatal wound healing after cleft palate repair could lead to unfavorable prognosis such as oronasal fistula (ONF), which might affect the patient's velopharyngeal function as well as their quality of life. Thus, restoring poor palatal wound healing for avoiding the occurrence of ONF should be considered the key to postoperative care after cleft palate repair. This review provided current insights in the preclinical study of poor palatal wound healing after cleft palate repair. This review comprehensively introduced the animal model establishment for palatal wound healing and related ONF, including the models by mice, rats, piglets, and dogs, and then demonstrated the aspects for investigating poor palatal wound healing and related treatments, including possible signaling pathways that could be involved in the formation of poor palatal wound healing, the related microbiota changes because of the deformity of palatal structure, and the studies for potential therapeutic strategies for palatal wound healing and ONF. The purpose of this review was to show the state of the art in preclinical studies about palatal wound healing after cleft palate repair and to show the promising aspects for better management of palatal wound healing.
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Affiliation(s)
- Jiali Chen
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Renjie Yang
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, Eastern Clinic, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Jiayi Yin
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Bing Shi
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Hanyao Huang
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
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5
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Zhang H, Chen S, Yan X, Zhang M, Jiang Y, Zhou Y. Egg white-derived peptide KPHAEVVLR promotes wound healing in rat palatal mucosa via PI3K/AKT/mTOR pathway. Peptides 2023; 168:171074. [PMID: 37541433 DOI: 10.1016/j.peptides.2023.171074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Revised: 07/20/2023] [Accepted: 08/02/2023] [Indexed: 08/06/2023]
Abstract
KPHAEVVLR (KR-9) is a peptide derived from egg white hydrolyzed, which has been found to accelerate skin wound healing in mice. However, the effect of KR-9 on wound healing on palatal mucosa in rats remains unknown, and the mechanism through which KR-9 promotes wound healing should be further explored. Herein, we aimed to investigate the effect and mechanism of KR-9 peptide on palatal mucosa wound healing. Our results showed that KR-9 reduced the wound area of palatal mucosa in rats and promoted human gingival fibroblasts(HGFs) migration and proliferation.The peptide can enter into cytoplasm. It also increased the phosphorylation of PI3K, AKT, and mTOR protein. The effect of KR-9 on HGFs migration and proliferation could be reversed by PI3K inhibitor. These results demonstrated that KR-9 peptide facilitated wound healing of palatal mucosa in rats by promoting HGFs migration and proliferation, which was mediated by PI3K/AKT/mTOR signaling pathway. This data proves that KR-9 might be used as a potential agent for wound healing treatment.
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Affiliation(s)
- Hongyi Zhang
- Department of Oral Implantology, Hospital of Stomatology, Jilin University, Changchun 130021, China; Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun 130021, China
| | - Siyu Chen
- Department of Oral Implantology, Hospital of Stomatology, Jilin University, Changchun 130021, China; Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun 130021, China
| | - Xinrui Yan
- School of life Sciences, Jilin University, Changchun 130021, China
| | - Mingrui Zhang
- Department of Oral Implantology, Hospital of Stomatology, Jilin University, Changchun 130021, China
| | - Yiqun Jiang
- School of life Sciences, Jilin University, Changchun 130021, China.
| | - Yanmin Zhou
- Department of Oral Implantology, Hospital of Stomatology, Jilin University, Changchun 130021, China; Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun 130021, China.
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6
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Wang X, Wu J, Wang M, Lu C, Li W, Lu Q, Li Y, Lian B, Zhang B. Substance P&dimethyloxallyl glycine-loaded carboxymethyl chitosan/gelatin hydrogel for wound healing. J Biomed Mater Res A 2023; 111:404-414. [PMID: 36479810 DOI: 10.1002/jbm.a.37475] [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: 06/14/2022] [Revised: 10/18/2022] [Accepted: 11/28/2022] [Indexed: 12/12/2022]
Abstract
Recent efforts have focused on preparing drug-loaded hydrogel for wound healing. In order to obtain an ideal hydrogel dressing for skin wound repair, a carboxymethyl chitosan-gelatin hydrogel was prepared for co-delivery of SP (substance P) and DMOG (dimethyloxallyl glycine) by a chemical cross-linking method using genipin as the cross-linking agent. The synthesized hydrogels have good biocompatibility and physicochemical properties due to the low toxicity of the hydrogel material. The three-dimensional network structure of the hydrogels supports cell migration and proliferation, and the combination of SP and DMOG drugs exhibited strong effects on cell proliferation. Moreover, the co-loaded drug hydrogels could significantly promote wound healing in vivo, and provide a potential hydrogel for wound healing.
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Affiliation(s)
- Xiaoxue Wang
- School of Life Science and Technology, Weifang Medical University, Weifang, People's Republic of China.,School of Nursing, Weifang University of Science and Technology, Weifang, People's Republic of China
| | - Jingliang Wu
- School of Nursing, Weifang University of Science and Technology, Weifang, People's Republic of China
| | - Min Wang
- School of Life Science and Technology, Weifang Medical University, Weifang, People's Republic of China
| | - Chunbo Lu
- School of Life Science and Technology, Weifang Medical University, Weifang, People's Republic of China
| | - Wenfang Li
- School of Life Science and Technology, Weifang Medical University, Weifang, People's Republic of China
| | - Qiao Lu
- School of Life Science and Technology, Weifang Medical University, Weifang, People's Republic of China
| | - Yanying Li
- School of Life Science and Technology, Weifang Medical University, Weifang, People's Republic of China
| | - Bo Lian
- School of Life Science and Technology, Weifang Medical University, Weifang, People's Republic of China
| | - Bo Zhang
- School of Pharmacy, Weifang Medical University, Weifang, People's Republic of China
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7
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Lin Y, Li Q, Wang L, Guo Q, Liu S, Zhu S, Sun Y, Fan Y, Sun Y, Li H, Tian X, Luo D, Shi S. Advances in regenerative medicine applications of tetrahedral framework nucleic acid-based nanomaterials: an expert consensus recommendation. Int J Oral Sci 2022; 14:51. [PMID: 36316311 PMCID: PMC9622686 DOI: 10.1038/s41368-022-00199-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 08/09/2022] [Accepted: 08/19/2022] [Indexed: 01/18/2023] Open
Abstract
With the emergence of DNA nanotechnology in the 1980s, self-assembled DNA nanostructures have attracted considerable attention worldwide due to their inherent biocompatibility, unsurpassed programmability, and versatile functions. Especially promising nanostructures are tetrahedral framework nucleic acids (tFNAs), first proposed by Turberfield with the use of a one-step annealing approach. Benefiting from their various merits, such as simple synthesis, high reproducibility, structural stability, cellular internalization, tissue permeability, and editable functionality, tFNAs have been widely applied in the biomedical field as three-dimensional DNA nanomaterials. Surprisingly, tFNAs exhibit positive effects on cellular biological behaviors and tissue regeneration, which may be used to treat inflammatory and degenerative diseases. According to their intended application and carrying capacity, tFNAs could carry functional nucleic acids or therapeutic molecules through extended sequences, sticky-end hybridization, intercalation, and encapsulation based on the Watson and Crick principle. Additionally, dynamic tFNAs also have potential applications in controlled and targeted therapies. This review summarized the latest progress in pure/modified/dynamic tFNAs and demonstrated their regenerative medicine applications. These applications include promoting the regeneration of the bone, cartilage, nerve, skin, vasculature, or muscle and treating diseases such as bone defects, neurological disorders, joint-related inflammatory diseases, periodontitis, and immune diseases.
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Affiliation(s)
- Yunfeng Lin
- grid.13291.380000 0001 0807 1581State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Qian Li
- grid.16821.3c0000 0004 0368 8293School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Institute of Translational Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Lihua Wang
- grid.458506.a0000 0004 0497 0637The Interdisciplinary Research Center, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Zhangjiang Laboratory, Shanghai, China
| | - Quanyi Guo
- grid.488137.10000 0001 2267 2324Institute of Orthopedics, Chinese PLA General Hospital, Beijing Key Laboratory of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma & War Injuries PLA, Beijing, China
| | - Shuyun Liu
- grid.488137.10000 0001 2267 2324Institute of Orthopedics, Chinese PLA General Hospital, Beijing Key Laboratory of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma & War Injuries PLA, Beijing, China
| | - Shihui Zhu
- grid.73113.370000 0004 0369 1660Department of Burn Surgery, The First Affiliated Hospital of Naval Medical University, Shanghai, China
| | - Yu Sun
- grid.73113.370000 0004 0369 1660Department of Burn Surgery, The First Affiliated Hospital of Naval Medical University, Shanghai, China
| | - Yujiang Fan
- grid.13291.380000 0001 0807 1581National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, China
| | - Yong Sun
- grid.13291.380000 0001 0807 1581College of Biomedical Engineering, Sichuan University, Chengdu, China
| | - Haihang Li
- Jiangsu Trautec Medical Technology Company Limited, Changzhou, China
| | - Xudong Tian
- Jiangsu Trautec Medical Technology Company Limited, Changzhou, China
| | - Delun Luo
- Chengdu Jingrunze Gene Technology Company Limited, Chengdu, China
| | - Sirong Shi
- grid.13291.380000 0001 0807 1581State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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8
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Liu JQ, Geng XR, Hu TY, Mo LH, Luo XQ, Qiu SY, Liu DB, Liu ZG, Shao JB, Liu ZQ, Yang PC. Glutaminolysis is required in maintaining immune regulatory functions in B cells. Mucosal Immunol 2022; 15:268-278. [PMID: 35013572 DOI: 10.1038/s41385-021-00481-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 12/13/2021] [Accepted: 12/22/2021] [Indexed: 02/04/2023]
Abstract
IL-10-expressing regulatory B cells (B10 cells) are dysfunctional in patients with many immune disorders. The underlying mechanism remains to be further elucidated. Glutamine is an essential nutrient for cell metabolism. This study aims to elucidate the role of glutaminolysis in maintaining the immune regulatory capacity in B10 cells. Peripheral blood samples were collected from 50 patients with allergic rhinitis and 50 healthy control subjects. B cells were isolated from blood samples by cell sorting with flow cytometry. The role of glutaminolysis in regulating B10 cell activities was assessed by immunological and biochemical approaches. The results showed that B cells from patients with allergic rhinitis expressed low levels of the transporter of glutamine and neutral amino acid. Glutaminolysis was required in the IL-10 expression in B cells. The glutamine catabolism was required in B10 cell generation. The mTOR activation mediated the glutaminolysis-associated B10 cell induction, and the suppression of the B cell glycogen synthase kinase-3 (GSK3) activation. GSK3 activation suppressed IL-10 expression in B cells. Inhibition of GSK3 enhanced IL-10 expression in B cells and alleviated experimental allergic rhinitis by generating immune competent type 1 regulatory T cells.
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Affiliation(s)
- Jiang-Qi Liu
- Department of Otolaryngology, Longgang E.N.T hospital & Shenzhen Key Laboratory of E.N.T, Institute of E.N.T Shenzhen, Shenzhen, China
| | - Xiao-Rui Geng
- Department of Otolaryngology, Longgang E.N.T hospital & Shenzhen Key Laboratory of E.N.T, Institute of E.N.T Shenzhen, Shenzhen, China
| | - Tian-Yong Hu
- Department of Otolaryngology, Longgang E.N.T hospital & Shenzhen Key Laboratory of E.N.T, Institute of E.N.T Shenzhen, Shenzhen, China
| | - Li-Hua Mo
- Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Shenzhen, China.,Institute of Allergy & Immunology, Shenzhen University School of Medicine, State Key Laboratory of Respiratory Disease Allergy Division at Shenzhen University, Shenzhen, China
| | - Xiang-Qian Luo
- Department of Pediatric Otolaryngology, Shenzhen Hospital, Southern Medical University, Shenzhen, China
| | - Shu-Yao Qiu
- Department of Pediatric Otolaryngology, Shenzhen Hospital, Southern Medical University, Shenzhen, China
| | - Da-Bo Liu
- Department of Pediatric Otolaryngology, Shenzhen Hospital, Southern Medical University, Shenzhen, China
| | - Zhi-Gang Liu
- Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Shenzhen, China.,Institute of Allergy & Immunology, Shenzhen University School of Medicine, State Key Laboratory of Respiratory Disease Allergy Division at Shenzhen University, Shenzhen, China
| | - Jian-Bo Shao
- Department of Otolaryngology, Beijing Children Hospital, Beijing, China
| | - Zhi-Qiang Liu
- Department of Otolaryngology, Longgang E.N.T hospital & Shenzhen Key Laboratory of E.N.T, Institute of E.N.T Shenzhen, Shenzhen, China.
| | - Ping-Chang Yang
- Department of Otolaryngology, Longgang E.N.T hospital & Shenzhen Key Laboratory of E.N.T, Institute of E.N.T Shenzhen, Shenzhen, China. .,Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Shenzhen, China. .,Institute of Allergy & Immunology, Shenzhen University School of Medicine, State Key Laboratory of Respiratory Disease Allergy Division at Shenzhen University, Shenzhen, China.
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9
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Gao Z, Wang Q, Yao Q, Zhang P. Application of Electrospun Nanofiber Membrane in the Treatment of Diabetic Wounds. Pharmaceutics 2021; 14:6. [PMID: 35056901 PMCID: PMC8780153 DOI: 10.3390/pharmaceutics14010006] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 12/12/2021] [Accepted: 12/16/2021] [Indexed: 01/09/2023] Open
Abstract
Diabetic wounds are complications of diabetes which are caused by skin dystrophy because of local ischemia and hypoxia. Diabetes causes wounds in a pathological state of inflammation, resulting in delayed wound healing. The structure of electrospun nanofibers is similar to that of the extracellular matrix (ECM), which is conducive to the attachment, growth, and migration of fibroblasts, thus favoring the formation of new skin tissue at the wound. The composition and size of electrospun nanofiber membranes can be easily adjusted, and the controlled release of loaded drugs can be realized by regulating the fiber structure. The porous structure of the fiber membrane is beneficial to gas exchange and exudate absorption at the wound, and the fiber surface can be easily modified to give it function. Electrospun fibers can be used as wound dressing and have great application potential in the treatment of diabetic wounds. In this study, the applications of polymer electrospun fibers, nanoparticle-loaded electrospun fibers, drug-loaded electrospun fibers, and cell-loaded electrospun fibers, in the treatment of diabetic wounds were reviewed, and provide new ideas for the effective treatment of diabetic wounds.
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Affiliation(s)
| | | | - Qingqiang Yao
- School of Pharmacy and Pharmaceutical Sciences, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250000, China; (Z.G.); (Q.W.)
| | - Pingping Zhang
- School of Pharmacy and Pharmaceutical Sciences, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250000, China; (Z.G.); (Q.W.)
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10
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Oral wound healing models and emerging regenerative therapies. Transl Res 2021; 236:17-34. [PMID: 34161876 PMCID: PMC8380729 DOI: 10.1016/j.trsl.2021.06.003] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 06/07/2021] [Accepted: 06/15/2021] [Indexed: 12/21/2022]
Abstract
Following injury, the oral mucosa undergoes complex sequences of biological healing processes to restore homeostasis. While general similarities exist, there are marked differences in the genomics and kinetics of wound healing between the oral cavity and cutaneous epithelium. The lack of successful therapy for oral mucosal wounds has influenced clinicians to explore alternative treatments and potential autotherapies to enhance intraoral healing. The present in-depth review discusses current gold standards for oral mucosal wound healing and compares endogenous factors that dictate the quality of tissue remodeling. We conducted a review of the literature on in vivo oral wound healing models and emerging regenerative therapies published during the past twenty years. Studies were evaluated by injury models, therapy interventions, and outcome measures. The success of therapeutic approaches was assessed, and research outcomes were compared based on current hallmarks of oral wound healing. By leveraging therapeutic advancements, particularly within in cell-based biomaterials and immunoregulation, there is great potential for translational therapy in oral tissue regeneration.
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11
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Zippusch S, Besecke KFW, Helms F, Klingenberg M, Lyons A, Behrens P, Haverich A, Wilhelmi M, Ehlert N, Böer U. Chemically induced hypoxia by dimethyloxalylglycine (DMOG)-loaded nanoporous silica nanoparticles supports endothelial tube formation by sustained VEGF release from adipose tissue-derived stem cells. Regen Biomater 2021; 8:rbab039. [PMID: 34408911 PMCID: PMC8363767 DOI: 10.1093/rb/rbab039] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 06/18/2021] [Accepted: 06/23/2021] [Indexed: 12/20/2022] Open
Abstract
Inadequate vascularization leading to insufficient oxygen and nutrient supply in deeper layers of bioartificial tissues remains a limitation in current tissue engineering approaches to which pre-vascularization offers a promising solution. Hypoxia triggering pre-vascularization by enhanced vascular endothelial growth factor (VEGF) expression can be induced chemically by dimethyloxalylglycine (DMOG). Nanoporous silica nanoparticles (NPSNPs, or mesoporous silica nanoparticles, MSNs) enable sustained delivery of molecules and potentially release DMOG allowing a durable capillarization of a construct. Here we evaluated the effects of soluble DMOG and DMOG-loaded NPSNPs on VEGF secretion of adipose tissue-derived stem cells (ASC) and on tube formation by human umbilical vein endothelial cells (HUVEC)-ASC co-cultures. Repeated doses of 100 µM and 500 µM soluble DMOG on ASC resulted in 3- to 7-fold increased VEGF levels on day 9 (P < 0.0001). Same doses of DMOG-NPSNPs enhanced VEGF secretion 7.7-fold (P < 0.0001) which could be maintained until day 12 with 500 µM DMOG-NPSNPs. In fibrin-based tube formation assays, 100 µM DMOG-NPSNPs had inhibitory effects whereas 50 µM significantly increased tube length, area and number of junctions transiently for 4 days. Thus, DMOG-NPSNPs supported endothelial tube formation by upregulated VEGF secretion from ASC and thus display a promising tool for pre-vascularization of tissue-engineered constructs. Further studies will evaluate their effect in hydrogels under perfusion.
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Affiliation(s)
- Sarah Zippusch
- Lower Saxony Centre for Biomedical Engineering, Implant Research and Development (NIFE), Hannover Medical School, Stadtfelddamm 34, 30625 Hannover, Germany.,Division for Cardiac, Thoracic-, Transplantation- and Vascular Surgery, Hannover Medical School, Carl-Neuberg-Straße 1, 30625 Hannover, Germany
| | - Karen F W Besecke
- Lower Saxony Centre for Biomedical Engineering, Implant Research and Development (NIFE), Hannover Medical School, Stadtfelddamm 34, 30625 Hannover, Germany.,Institute of Inorganic Chemistry, Leibniz University Hannover, Callinstraße 9, 30167 Hannover, Germany
| | - Florian Helms
- Lower Saxony Centre for Biomedical Engineering, Implant Research and Development (NIFE), Hannover Medical School, Stadtfelddamm 34, 30625 Hannover, Germany
| | - Melanie Klingenberg
- Lower Saxony Centre for Biomedical Engineering, Implant Research and Development (NIFE), Hannover Medical School, Stadtfelddamm 34, 30625 Hannover, Germany.,Division for Cardiac, Thoracic-, Transplantation- and Vascular Surgery, Hannover Medical School, Carl-Neuberg-Straße 1, 30625 Hannover, Germany
| | - Anne Lyons
- Lower Saxony Centre for Biomedical Engineering, Implant Research and Development (NIFE), Hannover Medical School, Stadtfelddamm 34, 30625 Hannover, Germany
| | - Peter Behrens
- Lower Saxony Centre for Biomedical Engineering, Implant Research and Development (NIFE), Hannover Medical School, Stadtfelddamm 34, 30625 Hannover, Germany.,Institute of Inorganic Chemistry, Leibniz University Hannover, Callinstraße 9, 30167 Hannover, Germany.,Cluster of Excellence Hearing4all, Carl-von-Ossietzky-Straße 9-11, 26129 Oldenburg, Germany
| | - Axel Haverich
- Lower Saxony Centre for Biomedical Engineering, Implant Research and Development (NIFE), Hannover Medical School, Stadtfelddamm 34, 30625 Hannover, Germany.,Division for Cardiac, Thoracic-, Transplantation- and Vascular Surgery, Hannover Medical School, Carl-Neuberg-Straße 1, 30625 Hannover, Germany
| | - Mathias Wilhelmi
- Lower Saxony Centre for Biomedical Engineering, Implant Research and Development (NIFE), Hannover Medical School, Stadtfelddamm 34, 30625 Hannover, Germany.,Department of Vascular- and Endovascular Surgery, St. Bernward Hospital, Treibestraße 9, 31134 Hildesheim, Germany
| | - Nina Ehlert
- Lower Saxony Centre for Biomedical Engineering, Implant Research and Development (NIFE), Hannover Medical School, Stadtfelddamm 34, 30625 Hannover, Germany.,Institute of Inorganic Chemistry, Leibniz University Hannover, Callinstraße 9, 30167 Hannover, Germany
| | - Ulrike Böer
- Lower Saxony Centre for Biomedical Engineering, Implant Research and Development (NIFE), Hannover Medical School, Stadtfelddamm 34, 30625 Hannover, Germany.,Division for Cardiac, Thoracic-, Transplantation- and Vascular Surgery, Hannover Medical School, Carl-Neuberg-Straße 1, 30625 Hannover, Germany
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12
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Effects of Vitamin and Amino Acid-Enriched Hyaluronic Acid Gel on the Healing of Oral Mucosa: In Vivo and In Vitro Study. ACTA ACUST UNITED AC 2021; 57:medicina57030285. [PMID: 33803814 PMCID: PMC8003116 DOI: 10.3390/medicina57030285] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 03/11/2021] [Accepted: 03/16/2021] [Indexed: 01/06/2023]
Abstract
Background and Objectives: Wound healing is a dynamic process that can be compromised in patients with chronic and metabolic conditions or unhealthy lifestyles. Numerous medical substances designed for topical use, charged with compounds that promote the healing process, have been developed to improve wound healing, especially in compromised subjects. The present study aimed to extend our understanding of the in vivo effects of a hyaluronic acid gel charged with amino acids (HAplus gel, Aminogam gel® Errekappa Euroterapici spa, Milan, Italy) and study the in vitro effects of the same gel charged with additional substances in an attempt to optimize its formulation. Materials and Methods: In a randomized controlled split-mouth clinical and histological trial, HAplus gel was tested on the gingival tissue of the lower third molar post-extraction socket. The gingiva was collected at the time of extraction (T0) and ten days after the extraction (T1) to be histologically analyzed. During the second stage of the study, culture media with HAplus gel and vitamin C and E at different concentrations (TEST) were tested on human gingival fibroblasts and compared to the HAplus-enriched medium (HA-Control). Results: Histological and immunohistochemical analysis of collected gingiva showed higher microvascular density and collagen fibers organized in closely packed and well-oriented bundles in sites treated with HAplus gel. In the in vitro study, all TEST groups showed an increased viability from 24 h to 48 h. After 24 h, the viability percentage in all experimental groups was below 100% of the HA-Control, demonstrating a mild toxicity. After 48 h from seeding, the TEST groups’ viability grew significantly compared to HA-Control. Conclusions: These encouraging preliminary results suggest that the use of HAplus gel enriched with vitamins C and E may be beneficial in patients with conditions that impair soft tissue healing.
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13
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Rafique M, Wei T, Sun Q, Midgley AC, Huang Z, Wang T, Shafiq M, Zhi D, Si J, Yan H, Kong D, Wang K. The effect of hypoxia-mimicking responses on improving the regeneration of artificial vascular grafts. Biomaterials 2021; 271:120746. [PMID: 33725586 DOI: 10.1016/j.biomaterials.2021.120746] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 02/16/2021] [Accepted: 02/28/2021] [Indexed: 12/12/2022]
Abstract
Cellular transition to hypoxia following tissue injury, has been shown to improve angiogenesis and regeneration in multiple tissues. To take advantage of this, many hypoxia-mimicking scaffolds have been prepared, yet the oxygen access state of implanted artificial small-diameter vascular grafts (SDVGs) has not been investigated. Therefore, the oxygen access state of electrospun PCL grafts implanted into rat abdominal arteries was assessed. The regions proximal to the lumen and abluminal surfaces of the graft walls were normoxic and only the interior of the graft walls was hypoxic. In light of this differential oxygen access state of the implanted grafts and the critical role of vascular regeneration on SDVG implantation success, we investigated whether modification of SDVGs with HIF-1α stabilizer dimethyloxalylglycine (DMOG) could achieve hypoxia-mimicking responses resulting in improving vascular regeneration throughout the entirety of the graft wall. Therefore, DMOG-loaded PCL grafts were fabricated by electrospinning, to support the sustained release of DMOG over two weeks. In vitro experiments indicated that DMOG-loaded PCL mats had significant biological advantages, including: promotion of human umbilical vein endothelial cells (HUVECs) proliferation, migration and production of pro-angiogenic factors; and the stimulation of M2 macrophage polarization, which in-turn promoted macrophage regulation of HUVECs migration and smooth muscle cells (SMCs) contractile phenotype. These beneficial effects were downstream of HIF-1α stabilization in HUVECs and macrophages in normoxic conditions. Our results indicated that DMOG-loaded PCL grafts improved endothelialization, contractile SMCs regeneration, vascularization and modulated the inflammatory reaction of grafts in abdominal artery replacement models, thus promoting vascular regeneration.
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Affiliation(s)
- Muhammad Rafique
- Key Laboratory of Bioactive Materials for the Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Tingting Wei
- Key Laboratory of Bioactive Materials for the Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Qiqi Sun
- Key Laboratory of Bioactive Materials for the Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Adam C Midgley
- Key Laboratory of Bioactive Materials for the Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Ziqi Huang
- Key Laboratory of Bioactive Materials for the Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Ting Wang
- Tianjin Key Laboratory of Urban Transport Emission Research, College of Environmental Science and Engineering, Nankai University, Tianjin, 300071, China
| | - Muhammad Shafiq
- Department of Biotechnology, Faculty of Life Sciences, University of Central Punjab, Lahore, 54000, Pakistan
| | - Dengke Zhi
- Key Laboratory of Bioactive Materials for the Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Jianghua Si
- Key Laboratory of Bioactive Materials for the Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Hongyu Yan
- Key Laboratory of Bioactive Materials for the Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Deling Kong
- Key Laboratory of Bioactive Materials for the Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Kai Wang
- Key Laboratory of Bioactive Materials for the Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071, China.
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14
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Costa MHG, Serra J, McDevitt TC, Cabral JMS, da Silva CL, Ferreira FC. Dimethyloxalylglycine, a small molecule, synergistically increases the homing and angiogenic properties of human mesenchymal stromal cells when cultured as 3D spheroids. Biotechnol J 2021; 16:e2000389. [PMID: 33471965 DOI: 10.1002/biot.202000389] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 01/06/2021] [Accepted: 01/15/2021] [Indexed: 02/06/2023]
Abstract
Strategies aiming at increasing the survival and paracrine activity of human mesenchymal stromal cells (MSCs) are of utmost importance to achieve the full therapeutic potential of these cells. Herein, we propose both physical and biochemical strategies to enhance the survival, homing, angiogenic, and immunomodulatory properties of MSCs in vitro. To that purpose, we compared the effect of exposing either 2D monolayer or 3D spheroids of MSCs to (i) hypoxia (2% O2 ) or to (ii) a hypoxic-mimetic small molecule, dimethyloxalylglycine (DMOG), with cells cultured at 21% O2 . 3D-cultured MSC spheroids evidenced higher survival upon exposure to oxidative stress and expressed higher levels of factors involved in tissue repair processes, namely tumor necrosis factor-stimulated gene-6, matrix metalloproteinase-2, and vascular endothelial growth factor. MSCs cultured as 3D spheroids and further exposed to hypoxia or hypoxic-mimetic conditions provided by DMOG synergistically favored the expression of the cell surface marker C-X-C chemokine receptor type-4, involved in homing processes to injured tissues, and adhesion to extracellular matrix components as fibronectin. These results highlight the role of ex vivo preconditioning approaches, presenting a novel strategy that combine biochemical stimuli with 3D spheroid organization of MSCs to maximize their tissue regeneration potential.
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Affiliation(s)
- Marta H G Costa
- Department of Bioengineering, iBB-Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Lisboa, Portugal
| | - Joana Serra
- Department of Bioengineering, iBB-Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Lisboa, Portugal
| | - Todd C McDevitt
- Gladstone Institutes, San Francisco, California, USA.,Department of Bioengineering & Therapeutic Sciences, University of California - San Francisco, San Francisco, California, USA
| | - Joaquim M S Cabral
- Department of Bioengineering, iBB-Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Lisboa, Portugal
| | - Cláudia L da Silva
- Department of Bioengineering, iBB-Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Lisboa, Portugal
| | - Frederico Castelo Ferreira
- Department of Bioengineering, iBB-Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Lisboa, Portugal
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15
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Taskan MM, Balci Yuce H, Karatas O, Gevrek F, Isiker Kara G, Celt M, Sirma Taskan E. Hyaluronic acid with antioxidants improve wound healing in rats. Biotech Histochem 2020; 96:536-545. [PMID: 33047988 DOI: 10.1080/10520295.2020.1832255] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Hyaluronic acid (HA) is found in connective tissue and participates in wound healing. We investigated the efficacy of a HA gel (2% hyaluronic acid; 1% antioxidants, coenzyme Q10 and vitamin E; and 5% benzocaine) on healing of palatal wounds in rats. We established two groups of rats: a control group treated with vehicle and an HA group treated with HA gel. The control group was divided into five subgroups and the HA group was divided into four subgroups according to the day on which animals were sacrificed. Wounds were created by elevating 5 mm diameter full thickness flaps. Healed and unhealed wound areas were measured using photographs. Transforming growth factor (TGF)-β, insulin-like growth factor (IGF), and collagen I and III expressions were determined using immunohistochemistry. The number of fibroblasts increased and inflammatory cells decreased from day 0 to 21 in both groups. The HA group exhibited more fibroblasts by day 7 compared to controls; (TGF)-β and IGF levels were similar between HA and control groups. HA groups exhibited fewer inflammatory cells than controls on days 3 and 7. We found significant differences in TGF-β and IGF levels among HA groups between days 3 and 21, and among control groups between days 0 and 21. Collagen I and III levels were greater for the day 3 HA group compared to controls. We observed improved wound healing in HA treated rats within 7 days.
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Affiliation(s)
- Mehmet Murat Taskan
- Department of Periodontology, Faculty of Dentistry, Tokat Gaziosmanpaşa University, Tokat, Turkey
| | - Hatice Balci Yuce
- Department of Periodontology, Faculty of Dentistry, Tokat Gaziosmanpaşa University, Tokat, Turkey
| | - Ozkan Karatas
- Department of Periodontology, Faculty of Dentistry, Tokat Gaziosmanpaşa University, Tokat, Turkey
| | - Fikret Gevrek
- Department of Histology and Embryology, Faculty of Medicine, Tokat Gaziosmanpaşa University, Tokat, Turkey
| | - Gozde Isiker Kara
- Department of Periodontology, Faculty of Dentistry, Tokat Gaziosmanpaşa University, Tokat, Turkey
| | - Melike Celt
- Department of Periodontology, Faculty of Dentistry, Tokat Gaziosmanpaşa University, Tokat, Turkey
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16
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Zhang X, Wang J, Wu J, Jiang X, Pei X, Chen J, Wan Q, Huang C. Dimethyloxalylglycine improves angiogenesis of ZIF-8-coated implant. J Biomater Appl 2019; 34:396-407. [PMID: 31117856 DOI: 10.1177/0885328219850976] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Xin Zhang
- 1 State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Jian Wang
- 1 State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,2 Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Jiaxin Wu
- 1 State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Xiaoge Jiang
- 1 State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Xibo Pei
- 1 State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,2 Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Junyu Chen
- 1 State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,2 Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Qianbing Wan
- 1 State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,2 Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Chao Huang
- 3 College of Chemistry, Sichuan University, Chengdu, China
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17
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Liu Y, Zhou S, Gao Y, Zhai Y. Electrospun nanofibers as a wound dressing for treating diabetic foot ulcer. Asian J Pharm Sci 2019; 14:130-143. [PMID: 32104445 PMCID: PMC7032134 DOI: 10.1016/j.ajps.2018.04.004] [Citation(s) in RCA: 92] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2018] [Revised: 03/25/2018] [Accepted: 04/19/2018] [Indexed: 01/14/2023] Open
Abstract
Diabetes is one of the most prevalent diseases in the world with high-mortality and complex complications including diabetic foot ulcer (DFU). It has been reported that the difficulties in repairing the wound related to DFU has much relationship with the wound infection, change of inflammatory responses, lack of extracellular matrix (ECM), and the failure of angiogenesis. Following the development of medical materials and pharmaceutical technology, nanofibers has been developed by electrospinning with huge porosity, excellent humidity absorption, a better oxygen exchange rate, and some antibacterial activities. That is to say, as a potential material, nanofibers must be a wonderful candidate for the DFU treatment with so many benefits. Careful selection of polymers from natural resource and synthetic resource can widen the nanofibrous application. Popular methods applied for the nanofibrous fabrication consist of uniaxial electrospinning and coaxial electrospinning. Furthermore, nanofibers loading chemical, biochemical active pharmaceutical ingredient (API) or even stem cells can be wonderful dosage forms for the treatment of DFU. This review summarizes the present techniques applied in the fabrication of nanofibrous dressing (ND) that utilizes a variety of materials and active agents to offer a better health care for the patients suffering from DFU.
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Affiliation(s)
- Yan Liu
- Shenyang Pharmaceutical University, No.103, Shenyang 110016, China
| | - Shiya Zhou
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Yanlin Gao
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Yinglei Zhai
- School of Medical Devices, Shenyang Pharmaceutical University, Shenyang 110016, China
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18
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Müller AS, Gashi M, Janjić K, Edelmayer M, Moritz A, Agis H. The impact of clay-based hypoxia mimetic hydrogel on human fibroblasts of the periodontal soft tissue. J Biomater Appl 2019; 33:1277-1284. [PMID: 30760093 DOI: 10.1177/0885328218821042] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Thixotropic clays have favorable properties for tissue regeneration. Hypoxia mimetic agents showed promising results in pre-clinical models for hard and soft tissue regeneration. It is unclear if clays can be used as carrier for hypoxia mimetic agent in a periodontal regenerative setting. Here, we tested the response of human fibroblasts of the periodontal soft tissue to synthetic clay hydrogels and assessed hypoxia mimetic agent release. Cells were cultured on synthetic clay hydrogels (5.00%-0.15%). We assessed viability and differentiation capacity with resazurin-based toxicity assays, MTT staining, Live-Dead staining, and alkaline phosphatase staining. To reveal the response of fibroblasts to hypoxia mimetic agent-loaded clay hydrogels, cells were exposed to clay supplemented with dimethyloxalylglycine, deferoxamine, l-mimosine, and CoCl2. Supernatants from hypoxia mimetic agent-loaded clay hydrogels were harvested and replaced with medium at hour 1, 3, 6, 24, 48, and 72. To reveal the hypoxia mimetic capacity of supernatants, vascular endothelial growth factor production in the fibroblasts was assessed in the culture medium. Our data show that clay did not induce relevant toxic effects in the fibroblasts which remained capable to differentiate into alkaline phosphatase-positive cells at the relevant concentrations. Fibroblasts cultured on clay hydrogel loaded with dimethyloxalylglycine, deferoxamine, l-mimosine, and CoCl2 remained vital, however, no significant increase in vascular endothelial growth factor levels was found in the culture medium. Only dimethyloxalylglycine-loaded clay supernatants taken in the first hours stimulated vascular endothelial growth factor production in fibroblasts. In conclusion no pronounced toxic effects of synthetic clay were observed. Supplementation with dimethyloxalylglycine leads to hypoxia mimetic activity. This pilot study provides first insights into the impact of synthetic clay on periodontal tissue.
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Affiliation(s)
- Anna Sonja Müller
- 1 Department of Conservative Dentistry and Periodontology, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria.,2 Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Milot Gashi
- 1 Department of Conservative Dentistry and Periodontology, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria.,2 Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Klara Janjić
- 1 Department of Conservative Dentistry and Periodontology, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria.,2 Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Michael Edelmayer
- 2 Austrian Cluster for Tissue Regeneration, Vienna, Austria.,3 Department of Oral Surgery, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria
| | - Andreas Moritz
- 1 Department of Conservative Dentistry and Periodontology, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria.,2 Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Hermann Agis
- 1 Department of Conservative Dentistry and Periodontology, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria.,2 Austrian Cluster for Tissue Regeneration, Vienna, Austria
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Qiu S, Jia Y, Sun Y, Han P, Xu J, Wen G, Chai Y. Von Hippel-Lindau (VHL) Protein Antagonist VH298 Improves Wound Healing in Streptozotocin-Induced Hyperglycaemic Rats by Activating Hypoxia-Inducible Factor- (HIF-) 1 Signalling. J Diabetes Res 2019; 2019:1897174. [PMID: 30911550 PMCID: PMC6398031 DOI: 10.1155/2019/1897174] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Revised: 11/01/2018] [Accepted: 11/29/2018] [Indexed: 01/04/2023] Open
Abstract
AIMS The purpose of the present research is to investigate the effects of the VHL protein antagonist, VH298, on functional activities of fibroblasts and vascular endothelial cells and the effects on the wound healing process in a streptozotocin-induced hyperglycaemic rat model. METHODS HIF-1α and hydroxy-HIF-1α protein levels in VH298-treated rat fibroblasts (rFb) were measured by immunoblotting, rFb proliferation was detected by the CCK-8 assay, and mRNA levels of related genes were measured by quantitative RT-PCR. In vitro wound healing was simulated by the scratch test; angiogenesis was measured by the human umbilical vein endothelial cell (hUVEC) tube formation assay. VH298 or PBS was locally injected into wounds in rat models with streptozotocin- (STZ-) induced hyperglycaemia, the wound tissues were harvested, and haematoxylin-eosin (HE) and Masson trichrome staining and immunohistochemical processes were conducted. RESULTS HIF-1α and hydroxy-HIF-1α levels increased in VH298-treated rFb, in a time- and dose-dependent manner. Thirty micromolar VH298 could significantly increase cell proliferation, angiogenesis, and gene expression of type I collagen-α1 (Col1-α1), vascular endothelial growth factor A (VEGF-A), and insulin-like growth factor 1 (IGF-1). The VH298-treated wound had a better healing pattern, activation of HIF-1 signalling, and vascularization. CONCLUSIONS Taken together, VH298 activated the HIF-1 signalling pathway by stabilizing both HIF-1α and hydroxy-HIF-1α. VH298 enhanced rFb functions, promoted hUVEC angiogenesis, and accelerated wound healing in the rat model mimicking diabetes mellitus.
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Affiliation(s)
- Shuo Qiu
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Yachao Jia
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Yunchu Sun
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Pei Han
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Jia Xu
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Gen Wen
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Yimin Chai
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
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20
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Gao SQ, Chang C, Li JJ, Li Y, Niu XQ, Zhang DP, Li LJ, Gao JQ. Co-delivery of deferoxamine and hydroxysafflor yellow A to accelerate diabetic wound healing via enhanced angiogenesis. Drug Deliv 2018; 25:1779-1789. [PMID: 30338719 PMCID: PMC6201774 DOI: 10.1080/10717544.2018.1513608] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Revised: 08/14/2018] [Accepted: 08/15/2018] [Indexed: 12/19/2022] Open
Abstract
Nonhealing chronic wounds on foot induced by diabetes is a complicated pathologic process. They are mainly caused by impaired neovascularization, neuropathy, and excessive inflammation. A strategy, which can accelerate the vessel network formation as well as inhibit inflammatory response at the same time, makes it possible for effective diabetic ulcers treatment. Co-delivery of multiple drugs with complementary bioactivity offers a strategy to properly treat diabetic wound. We previously demonstrated that hydroxysafflor yellow A (HSYA) could accelerate diabetic wound healing through promoting angiogenesis and reducing inflammatory response. In order to further enhance blood vessel formation, a pro-angiogenic molecular called deferoxamine (DFO) was topically co-administrated with HSYA. The in vitro results showed that the combination of DFO and HSYA exerted synergistic effect on enhancing angiogenesis by upregulation of hypoxia inducible factor-1 alpha (HIF-1α) expression. The interpenetrating polymer networks hydrogels, characterized by good breathability and water absorption, were designed for co-loading of DFO and HSYA aiming to recruit angiogenesis relative cells and upgrade wound healing in vivo. Both DFO and HSYA in hydrogel have achieved sustained release. The in vivo studies indicated that HSYA/DFO hydrogel could accelerate diabetic wound healing. With a high expression of Hif-1α which is similar to that of normal tissue. The noninvasive US/PA imaging revealed that the wound could be recovered completely with abundant blood perfusion in dermis after given HSYA/DFO hydrogel for 28 days. In conclusion, combination of pro-angiogenic small molecule DFO and HSYA in hydrogel provides a promising strategy to productively promote diabetic wound healing as well as better the repair quality.
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Affiliation(s)
- Si-Qian Gao
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, Zhejiang, P.R. China
| | - Chen Chang
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, Zhejiang, P.R. China
| | - Jun-Jun Li
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, Zhejiang, P.R. China
| | - Ying Li
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, Zhejiang, P.R. China
| | - Xiao-Qian Niu
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, Zhejiang, P.R. China
| | - Dan-Ping Zhang
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, Zhejiang, P.R. China
| | - Long-Jian Li
- Zhejiang Provincial Corps Hospital of Chinese People's Armed Police Forces, Jiaxing, Zhejiang, P.R. China
| | - Jian-Qing Gao
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, Zhejiang, P.R. China
- Jiangsu Engineering Research Center for New-Type External and Transdermal Preparations, Changzhou, P.R. China
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Sezgin Y, Bilgin Çetin M, Bulut Ş, Alptekin NÖ, Börçek P. Evaluating the Effects of a Topical Preparation with Dexpanthenol, Silbiol, Undecylenic Acid, and Lidocaine on Palatal Mucosa Wound Healing in a Rat Model. Balkan Med J 2018; 36:88-95. [PMID: 30322831 PMCID: PMC6409956 DOI: 10.4274/balkanmedj.galenos.2018.2018.0167] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
Background Postoperative complications occur after periodontal plastic surgeries, but an ideal treatment to overcome them has not been found yet. Aims To evaluate the effects of topically applied Oral-norm gel on the healing of excisional wounds. Study Design Animal experiment. Methods Excisional wounds with a diameter of 3 mm were made in the center of the palatal mucosa of 63 Sprague Dawley rats. Seven animals were sacrificed at time 0. The remaining rats were divided into two groups: a test group in which the topical Oral-norm gel was applied three times a day and a control group in which nothing was applied. Seven animals in each group were sacrificed at 3, 7, 14, and 21 days. Mean wound surface area was measured photographically, while wound healing and width were evaluated microscopically. Results The mean wound surface area decreased significantly after 3 days in both groups (p<0.001). Between days 3 and 7, the mean wound surface area decreased from 6.62 (2.85) to 0.83 (1.62) mm2 in the control group and 5.07 (0.88) to 1.42 (1.67) mm2 in the test group. The wound width decreased significantly on day 7 in both groups (p<0.001), with no further changes by day 14. Both groups had a significant increase in inflammation and vascularization on day 3 (p<0.001), with a reduction thereafter. No significant differences in macroscopic and microscopic measurements were observed between the groups at any time point (p>0.05). Conclusion The Oral-norm gel has no positive healing effects in the palatal mucosa of rats.
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Affiliation(s)
- Yasemin Sezgin
- Department of Periodontology, Başkent University School of Dentistry, Ankara, Turkey
| | - Mehtap Bilgin Çetin
- Department of Periodontology, Başkent University School of Dentistry, Ankara, Turkey
| | - Şule Bulut
- Department of Periodontology, Başkent University School of Dentistry, Ankara, Turkey
| | - Nilgün Özlem Alptekin
- Department of Periodontology, Başkent University School of Dentistry, Ankara, Turkey
| | - Pelin Börçek
- Department of Pathology, Başkent University School of Medicine, Ankara, Turkey
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Ren X, Han Y, Wang J, Jiang Y, Yi Z, Xu H, Ke Q. An aligned porous electrospun fibrous membrane with controlled drug delivery - An efficient strategy to accelerate diabetic wound healing with improved angiogenesis. Acta Biomater 2018; 70:140-153. [PMID: 29454159 DOI: 10.1016/j.actbio.2018.02.010] [Citation(s) in RCA: 129] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Revised: 01/29/2018] [Accepted: 02/08/2018] [Indexed: 12/11/2022]
Abstract
A chronic wound in diabetic patients is usually characterized by poor angiogenesis and delayed wound closure. The exploration of efficient strategy to significantly improve angiogenesis in the diabetic wound bed and thereby accelerate wound healing is still a significant challenge. Herein, we reported a kind of aligned porous poly (l-lactic acid) (PlLA) electrospun fibrous membranes containing dimethyloxalylglycine (DMOG)-loaded mesoporous silica nanoparticles (DS) for diabetic wound healing. The PlLA electrospun fibers aligned in a single direction and there were ellipse-shaped nano-pores in situ generated onto the surface of fibers, while the DS were well distributed in the fibers and the DMOG as well as Si ion could be controlled released from the nanopores on the fibers. The in vitro results revealed that the aligned porous composite membranes (DS-PL) could stimulate the proliferation, migration and angiogenesis-related gene expression of human umbilical vein endothelial cells (HUVECs) compared with the pure PlLA membranes. The in vivo study further demonstrated that the prepared DS-PL membranes significantly improved neo-vascularization, re-epithelialization and collagen formation as well as inhibited inflammatory reaction in the diabetic wound bed, which eventually stimulated the healing of the diabetic wound. Collectively, these results suggest that the combination of hierarchical structures (nanopores on the aligned fibers) with the controllable released DMOG drugs as well as Si ions from the membranes, which could create a synergetic effect on the rapid stimulation of angiogenesis in the diabetic wound bed, is a potential novel therapeutic strategy for highly efficient diabetic wound healing. STATEMENT OF SIGNIFICANCE A chronic wound in diabetic patients is usually characterized by the poor angiogenesis and the delayed wound closure. The main innovation of this study is to design a new kind of skin tissue engineered scaffold, aligned porous poly (l-lactic acid) (PlLA) electrospun membranes containing dimethyloxalylglycine (DMOG)-loaded mesoporous silica nanoparticles (DS), which could significantly improve angiogenesis in the diabetic wound bed and thereby accelerate diabetic wound healing. The results revealed that the electrospun fibers with ellipse-shaped nano-pores on the surface were aligned in a single direction, while there were DS particles distributed in the fibers and the DMOG as well as Si ions could be controllably released from the nanopores on the fibers. The in vitro studies demonstrated that the hierarchical nanostructures (nanopores on the aligned fibers) and the controllable released chemical active agents (DMOG drugs and Si ions) from the DS-PL membranes could exert a synergistic effect on inducing the endothelial cell proliferation, migration and differentiation. Above all, the scaffolds distinctly induced the angiogenesis, collagen deposition and re-epithelialization as well as inhibited inflammation reaction in the wound sites, which eventually stimulated the healing of diabetic wounds in vivo. The significance of the current study is that the combination of the hierarchical aligned porous nanofibrous structure with DMOG-loaded MSNs incorporated in electrospun fibers may suggest a high-efficiency strategy for chronic wound healing.
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Affiliation(s)
- Xiaozhi Ren
- College of Life and Environmental Sciences, Shanghai Normal University, No. 100 Guilin Road, Shanghai 200234, China
| | - Yiming Han
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai 200241, China
| | - Jie Wang
- College of Life and Environmental Sciences, Shanghai Normal University, No. 100 Guilin Road, Shanghai 200234, China
| | - Yuqi Jiang
- College of Life and Environmental Sciences, Shanghai Normal University, No. 100 Guilin Road, Shanghai 200234, China
| | - Zhengfang Yi
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai 200241, China.
| | - He Xu
- College of Life and Environmental Sciences, Shanghai Normal University, No. 100 Guilin Road, Shanghai 200234, China.
| | - Qinfei Ke
- College of Life and Environmental Sciences, Shanghai Normal University, No. 100 Guilin Road, Shanghai 200234, China.
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Gao SQ, Chang C, Niu XQ, Li LJ, Zhang Y, Gao JQ. Topical application of Hydroxysafflor Yellow A accelerates the wound healing in streptozotocin induced T1DM rats. Eur J Pharmacol 2018; 823:72-78. [PMID: 29408092 DOI: 10.1016/j.ejphar.2018.01.018] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Revised: 01/12/2018] [Accepted: 01/15/2018] [Indexed: 12/13/2022]
Abstract
To investigate the effects of Hydroxysafflor Yellow A (HSYA), which is derived from safflower, on the proliferation, migration and angiogenesis of cells in vitro and its potential efficacy in vivo when topically applied to a diabetic wound. Human umbilical vein endothelial cells (HUVECs) and mouse macrophage cells (RAW264.7) were used to evaluate angiogenesis and anti-inflammatory activities, respectively. The influence of HSYA on the wound scratch assay was investigated in keratinocytes. A splinted excisional wound model in rats with TIDM induced by streptozotocin was used to assess the effects of wound healing. Collagen disposition and secretion of vascular growth factors (VEGF) as well as transforming growth factor-β1 (TGF-β1) were evaluated by an ELISA assay and histological staining. The in vitro results showed that HSYA could significantly enhance both the neovascularization of HUVECs and the migration of keratinocytes. It showed the significant inhibitory effect on nitric oxide production, indicating the anti-inflammatory activity of HSYA. In vivo, the topical application of HSYA significantly enhanced the wound closure rate, and the time to complete wound closure was 17 days, whereas 30 days were needed with PBS treatment. Further, treatment with HSYA exhibited significant granulation tissue formation with higher collagen content, re-epithelialization and angiogenesis according to Masson's trichrome staining evaluation, VEGE and TGF-β1 ELISA measurement. In conclusion, HSYA application could be considered a promising therapeutic strategy for treating chronic non-healing diabetic foot ulcers.
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Affiliation(s)
- Si-Qian Gao
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, Zhejiang, PR China
| | - Chen Chang
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, Zhejiang, PR China
| | - Xiao-Qian Niu
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, Zhejiang, PR China
| | - Long-Jian Li
- Zhejiang Provincial Corps Hospital of Chinese People's Armed Police Forces, Jiaxing, Zhejiang, PR China
| | - Yan Zhang
- Zhejiang Provincial Corps Hospital of Chinese People's Armed Police Forces, Jiaxing, Zhejiang, PR China
| | - Jian-Qing Gao
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, Zhejiang, PR China; Jiangsu Engineering Research Center for New-Type External and Transdermal Preparations, PR China.
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Zhang Q, Oh JH, Park CH, Baek JH, Ryoo HM, Woo KM. Effects of Dimethyloxalylglycine-Embedded Poly(ε-caprolactone) Fiber Meshes on Wound Healing in Diabetic Rats. ACS APPLIED MATERIALS & INTERFACES 2017; 9:7950-7963. [PMID: 28211272 DOI: 10.1021/acsami.6b15815] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Impaired wound healing in diabetic patients is associated with altered inflammatory responses, poor angiogenesis, deficient extracellular matrix (ECM) component, and peripheral neuropathy. To develop a wound dressing that is capable of the controlled delivery of bioactive small molecules that can improve diabetic wound healing, dimethyloxalylglycine (DMOG)-embedded poly(ε-caprolactone) (PCL) fiber (PCLF/DMOG) meshes are fabricated by electrospinning, and the effects of the PCLF/DMOG meshes on wound healing in diabetic rats are evaluated. Electrospun PCLF/DMOG meshes increase not only the wound closure, re-epithelialization ratio, epithelial maturation (K-10-positive epidermis), and collagen-positive area but also the numbers of angiogenic marker (CD-31)-positive and neuronal marker (neurofilament)-positive cells compared to PCLF (p < 0.05). In in vitro examinations, RAW264.7 macrophages grown on PCLF/DMOG meshes enhance the expression of growth factors (IGF-1, HB-EGF, and NGF) and anti-inflammatory factors (TGF-β1 and IL-4) but decrease that of pro-inflammatory factors (IL-1β and IL-6). Keratinocyte migration is increased by conditioned media from the cultures of the macrophages grown either in the presence of DMOG or on PCLF/DMOG. Collectively, these results indicate that PCLF/DMOG meshes promote impaired wound healing in diabetic rats by modulating macrophage responses, enhancing angiogenesis and nerve innervation, and improving ECM synthesis.
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Affiliation(s)
- Qiankun Zhang
- Department of Molecular Genetics, Dental Research Institute and BK21 Program, School of Dentistry, and ‡Department of Pharmacology & Dental Therapeutics, School of Dentistry, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Joung-Hwan Oh
- Department of Molecular Genetics, Dental Research Institute and BK21 Program, School of Dentistry, and ‡Department of Pharmacology & Dental Therapeutics, School of Dentistry, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Chan Ho Park
- Department of Molecular Genetics, Dental Research Institute and BK21 Program, School of Dentistry, and ‡Department of Pharmacology & Dental Therapeutics, School of Dentistry, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Jeong-Hwa Baek
- Department of Molecular Genetics, Dental Research Institute and BK21 Program, School of Dentistry, and ‡Department of Pharmacology & Dental Therapeutics, School of Dentistry, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Hyun-Mo Ryoo
- Department of Molecular Genetics, Dental Research Institute and BK21 Program, School of Dentistry, and ‡Department of Pharmacology & Dental Therapeutics, School of Dentistry, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Kyung Mi Woo
- Department of Molecular Genetics, Dental Research Institute and BK21 Program, School of Dentistry, and ‡Department of Pharmacology & Dental Therapeutics, School of Dentistry, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
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β-N-oxalyl-L-α, β- diaminopropionic acid induces HRE expression by inhibiting HIF-prolyl hydroxylase-2 in normoxic conditions. Eur J Pharmacol 2016; 791:405-411. [DOI: 10.1016/j.ejphar.2016.07.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Revised: 07/03/2016] [Accepted: 07/05/2016] [Indexed: 01/18/2023]
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Sa G, Xiong X, Wu T, Yang J, He S, Zhao Y. Histological features of oral epithelium in seven animal species: As a reference for selecting animal models. Eur J Pharm Sci 2016; 81:10-7. [DOI: 10.1016/j.ejps.2015.09.019] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2015] [Revised: 09/22/2015] [Accepted: 09/28/2015] [Indexed: 10/23/2022]
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Levy R, Held M, Mason D, Comenge J, Carolan G, Cowman S. The Spherical Nucleic Acids mRNA Detection Paradox. SCIENCEOPEN RESEARCH 2015. [DOI: 10.14293/s2199-1006.1.sor-chem.az1mju.v2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
<p>From the 1950s onwards, our understanding of the formation and intracellular trafficking of membrane vesicles was informed by experiments in which cells were exposed to gold nanoparticles and their uptake and localisation, studied by electron microscopy. In the last decade, building on progress in the synthesis of gold nanoparticles and their controlled functionalisation with a large variety of biomolecules (DNA, peptides, polysaccharides), new applications have been proposed, including the imaging and sensing of intracellular events. Yet, as already demonstrated in the 1950s, uptake of nanoparticles results in confinement within an intracellular vesicle which in principle should preclude sensing of cytosolic events. To study this apparent paradox, we focus on a commercially available nanoparticle probe that detects mRNA through the release of a fluorescently-labelled oligonucleotide (unquenching the fluorescence) in the presence of the target mRNA. Using electron, fluorescence and photothermal microscopy, we show that the probes remain in endocytic compartments and that they do not report on mRNA level. We suggest that the validation of any nanoparticle-based probes for intracellular sensing should include a quantitative and thorough demonstration that the probes can reach the cytosolic compartment.</p>
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Valizadeh R, Hemmati AA, Houshmand G, Bayat S, Bahadoram M. Wound healing potential of Althaea officinalis flower mucilage in rabbit full thickness wounds. Asian Pac J Trop Biomed 2015. [DOI: 10.1016/j.apjtb.2015.07.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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