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Zhang Z, Yin C, Song X, Liu X, Zhong C, Zheng J, Ni Y, Shen R, Guo Y, Li X, Lin C, Zhang Y, Hu G. A self-fused peptide-loaded hydrogel with injectability and tissue-adhesiveness for preventing postoperative peritoneal adhesions. Mater Today Bio 2024; 28:101205. [PMID: 39221222 PMCID: PMC11364900 DOI: 10.1016/j.mtbio.2024.101205] [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: 04/23/2024] [Revised: 08/05/2024] [Accepted: 08/13/2024] [Indexed: 09/04/2024] Open
Abstract
Peritoneal adhesions commonly occur following abdominal or pelvic surgery and can cause serious complications. Currently, physical barriers are the primary approach used in clinical practice to prevent adhesion, although their effectiveness is frequently inadequate. In this study, we developed an injectable peptide-loaded hydrogel with multiple functions, including self-fusion, tissue-adhesiveness, anti-inflammation, anti-cell adhesion and anti-angiogenesis. To assess the effectiveness of these hydrogels, which are stabilized by dynamic imine bonds and acetal connections, in preventing postoperative abdominal adhesions, we utilized both a rat abdominal adhesion model and a rat model simulating repeated-injury adhesions. In comparison to the commercially available HA hydrogel, as-prepared hydrogels exhibited significant reductions in inflammation, fibrosis, and angiogenesis, leading to an obvious decrease in peritoneal adhesions. Moreover, this peptide-loaded hydrogel demonstrated an ideal degradation time, maintaining an in vivo viability for about 10 days. We believe this peptide-loaded hydrogel presents a promising solution for the challenging clinical issue of postoperative abdominal adhesions.
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Affiliation(s)
- Zequn Zhang
- Department of Gastrointestinal Surgery, The Third Xiangya Hospital of Central South University, Changsha, 410013, China
- Department of General Surgery, The Second Xiangya Hospital of Central South University, Changsha, 410011, China
| | - Chao Yin
- Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
- College of Pharmacy, Xinjiang Medical University, Urumqi, 830011, China
| | - Xianwen Song
- Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
| | - Xi Liu
- Department of Gastrointestinal Surgery, The Third Xiangya Hospital of Central South University, Changsha, 410013, China
| | - Chonglei Zhong
- Department of Gastrointestinal Surgery, The Third Xiangya Hospital of Central South University, Changsha, 410013, China
| | - Jun Zheng
- Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
| | - Yaqiong Ni
- Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
| | - Rujuan Shen
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha, 410083, China
| | - Yihang Guo
- Department of Gastrointestinal Surgery, The Third Xiangya Hospital of Central South University, Changsha, 410013, China
| | - Xiaorong Li
- Department of Gastrointestinal Surgery, The Third Xiangya Hospital of Central South University, Changsha, 410013, China
| | - Changwei Lin
- Department of Gastrointestinal Surgery, The Third Xiangya Hospital of Central South University, Changsha, 410013, China
| | - Yi Zhang
- Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
- National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou, 450002, China
| | - Gui Hu
- Department of Gastrointestinal Surgery, The Third Xiangya Hospital of Central South University, Changsha, 410013, China
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Rössler S, Nischwitz SP, Luze H, Holzer-Geissler JCJ, Zrim R, Kamolz LP. In Vivo Models for Hypertrophic Scars—A Systematic Review. Medicina (B Aires) 2022; 58:medicina58060736. [PMID: 35743999 PMCID: PMC9229864 DOI: 10.3390/medicina58060736] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 05/23/2022] [Accepted: 05/27/2022] [Indexed: 12/03/2022] Open
Abstract
Backgroundand Objectives: Hypertrophic scars following surgeries or burns present a serious concern for many patients because these scars not only lead to an aesthetical but also to a functional and psychological burden. Treatment of hypertrophic scars is challenging because despite various treatment options, a low level of evidence hinders preference of any specific treatment plan. To properly identify new therapeutic approaches, the use of in vivo models remains indispensable. A gold standard for hypertrophic scars has not been established to date. This review aims at giving a comprehensive overview of the available in vivo models. Materials and Methods: PubMed and CINAHL were queried for currently existing models. Results: Models with mice, rats, rabbits, pigs, guinea pigs and dogs are used in hypertrophic scar research. Rodent models provide the advantage of ready availability and low costs, but the number of scars per animal is limited due to their relatively small body surface, leading to a high number of test animals which should be avoided according to the 3Rs. Multiple scars per animal can be created in the guinea pig and rabbit ear model; but like other rodent models, these models exhibit low transferability to human conditions. Pig models show a good transferability, but are cost-intensive and require adequate housing facilities. Further, it is not clear if a currently available pig model can deliver clinical and histological features of human hypertrophic scars concurrently. Conclusions: None of the analyzed animal models can be clearly recommended as a standard model in hypertrophic scar research because the particular research question must be considered to elect a suitable model.
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Affiliation(s)
- Stefan Rössler
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, 8036 Graz, Austria; (S.P.N.); (H.L.); (J.C.J.H.-G.); (R.Z.); (L.-P.K.)
- Correspondence: ; Tel.: +43-664-1209100
| | - Sebastian Philipp Nischwitz
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, 8036 Graz, Austria; (S.P.N.); (H.L.); (J.C.J.H.-G.); (R.Z.); (L.-P.K.)
| | - Hanna Luze
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, 8036 Graz, Austria; (S.P.N.); (H.L.); (J.C.J.H.-G.); (R.Z.); (L.-P.K.)
| | - Judith C. J. Holzer-Geissler
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, 8036 Graz, Austria; (S.P.N.); (H.L.); (J.C.J.H.-G.); (R.Z.); (L.-P.K.)
| | - Robert Zrim
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, 8036 Graz, Austria; (S.P.N.); (H.L.); (J.C.J.H.-G.); (R.Z.); (L.-P.K.)
- International University of Monaco, 98000 Monaco-Ville, Monaco
| | - Lars-Peter Kamolz
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, 8036 Graz, Austria; (S.P.N.); (H.L.); (J.C.J.H.-G.); (R.Z.); (L.-P.K.)
- COREMED—Cooperative Centre for Regenerative Medicine, JOANNEUM RESEARCH Forschungsgesellschaft mbH, 8010 Graz, Austria
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Mistry R, Veres M, Issa F. A Systematic Review Comparing Animal and Human Scarring Models. Front Surg 2022; 9:711094. [PMID: 35529910 PMCID: PMC9073696 DOI: 10.3389/fsurg.2022.711094] [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: 05/17/2021] [Accepted: 04/05/2022] [Indexed: 11/29/2022] Open
Abstract
Introduction A reproducible, standardised model for cutaneous scar tissue to assess therapeutics is crucial to the progress of the field. A systematic review was performed to critically evaluate scarring models in both animal and human research. Method All studies in which cutaneous scars are modelling in animals or humans were included. Models that were focused on the wound healing process or those in humans with scars from an existing injury were excluded. Ovid Medline® was searched on 25 February 2019 to perform two near identical searches; one aimed at animals and the other aimed at humans. Two reviewers independently screened the titles and abstracts for study selection. Full texts of potentially suitable studies were then obtained for analysis. Results The animal kingdom search yielded 818 results, of which 71 were included in the review. Animals utilised included rabbits, mice, pigs, dogs and primates. Methods used for creating scar tissue included sharp excision, dermatome injury, thermal injury and injection of fibrotic substances. The search for scar assessment in humans yielded 287 results, of which 9 met the inclusion criteria. In all human studies, sharp incision was used to create scar tissue. Some studies focused on patients before or after elective surgery, including bilateral breast reduction, knee replacement or midline sternotomy. Discussion The rabbit ear scar model was the most popular tool for scar research, although pigs produce scar tissue which most closely resembles that of humans. Immunodeficient mouse models allow for in vivo engraftment and study of human scar tissue, however, there are limitations relating to the systemic response to these xenografts. Factors that determine the use of animals include cost of housing requirements, genetic traceability, and ethical concerns. In humans, surgical patients are often studied for scarring responses and outcomes, but reproducibility and patient factors that impact healing can limit interpretation. Human tissue use in vitro may serve as a good basis to rapidly screen and assess treatments prior to clinical use, with the advantage of reduced cost and setup requirements.
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Affiliation(s)
- Riyam Mistry
- Nuffield Department of Surgical Sciences, University of Oxford, Oxford, United Kingdom
- Correspondence: Riyam Mistry
| | - Mark Veres
- John Radcliffe Hospital, Oxford University Hospitals NHS Trust, Oxford, United Kingdom
| | - Fadi Issa
- Nuffield Department of Surgical Sciences, University of Oxford, Oxford, United Kingdom
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Zhang Z, Liu X, Shen Z, Quan J, Lin C, Li X, Hu G. Endostatin in fibrosis and as a potential candidate of anti-fibrotic therapy. Drug Deliv 2021; 28:2051-2061. [PMID: 34595978 PMCID: PMC8491667 DOI: 10.1080/10717544.2021.1983071] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Fibrotic diseases pose significant clinical challenges due to their broadness and complexity. Thus, a better understanding of fibrogenesis and the development of more effective treatments is imperative. Recent evidence suggests a significant antifibrotic potential of an endogenous glycoprotein, endostatin. While endostatin has been widely studied for its role as an anticancer adjuvant by inhibiting tumor angiogenesis, its possible implication in fibrosis remains largely unclear. Here, we review the role of endostatin in various cellular processes and highlight its antifibrotic activity. We hypothesize that endostatin conveys a homeostatic function in the process of fibrosis by regulating (a) TGF-β1 and its downstream signaling; (b) RhoA/ROCK pathway; (c) NF-κB signaling pathway; (d) expression of EGR-1; (e) PDGF/PDGFR pathway; (f) autophagy-related pathways; (g) pathways associated with cell proliferation and apoptosis. Finally, we propose a schematic model of the antifibrotic roles and mechanisms of endostatin; also, we outline future research directions of endostatin and aim to present a potential therapeutic approach for fibrosis.
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Affiliation(s)
- Zequn Zhang
- Department of General Surgery, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Xi Liu
- Department of General Surgery, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Zhaolong Shen
- Department of General Surgery, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Jun Quan
- Department of General Surgery, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Changwei Lin
- Department of General Surgery, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Xiaorong Li
- Department of General Surgery, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Gui Hu
- Department of General Surgery, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
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Zhu Z, Chen B, Peng L, Gao S, Guo J, Zhu X. Blockade of LINC01605-enriched exosome generation in M2 macrophages impairs M2 macrophage-induced proliferation, migration, and invasion of human dermal fibroblasts. Int J Immunopathol Pharmacol 2021; 35:20587384211016724. [PMID: 34011185 PMCID: PMC8150463 DOI: 10.1177/20587384211016724] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Activated M2 macrophages are involved in hypertrophic scar (HS) formation via manipulating the differentiation of fibroblasts to myofibroblasts having the proliferative capacity and biological function. However, the function of exosomes derived from M2 macrophages in HS formation is unclear. Thus, this study aims to investigate the role of exosomes derived by M2 in the formation of HS. To understand the effect of exosomes derived from M2 macrophages on formation of HS, M2 macrophages were co-cultured with human dermal fibroblast (HDF) cells. Cell Counting Kit-8 assay was performed to evaluate HDF proliferation. To evaluate the migration and invasion of HDFs, wound-healing and transwell invasion assays were performed, respectively. To investigate the interaction between LINC01605 and miR-493-3p, a dual-luciferase reporter gene assay was adopted; consequently, an interaction between miR-493-3p and AKT1 was detected. Our results demonstrated that exosomes derived from M2 macrophages promoted the proliferation, migration, and invasion of HDFs. Additionally, we found that long noncoding RNA LINC01605, enriched in exosomes derived from M2 macrophages, promoted fibrosis of HDFs and that GW4869, an inhibitor of exosomes, could revert this effect. Mechanistically, LINC01605 promoted fibrosis of HDFs by directly inhibiting the secretion of miR-493-3p, and miR-493-3p down-regulated the expression of AKT1. Exosomes derived from M2 macrophages promote the proliferation and migration of HDFs by transmitting LINC01605, which may activate the AKT signaling pathway by sponging miR-493-3p. Our results provide a novel approach and basis for further investigation of the function of M2 macrophages in HS formation.
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Affiliation(s)
- Zhensen Zhu
- Department of Plastic and Burn Surgery, Shenzhen Hospital, Southern Medical University, Shenzhen, Guangdong, China
| | - Bo Chen
- Department of Plastic and Burn Surgery, Shenzhen Hospital, Southern Medical University, Shenzhen, Guangdong, China
| | - Liang Peng
- Department of Plastic and Burn Surgery, Shenzhen Hospital, Southern Medical University, Shenzhen, Guangdong, China
| | - Songying Gao
- Department of Plastic and Burn Surgery, Shenzhen Hospital, Southern Medical University, Shenzhen, Guangdong, China
| | - Jingdong Guo
- Department of Plastic and Burn Surgery, Shenzhen Hospital, Southern Medical University, Shenzhen, Guangdong, China
| | - Xiongxiang Zhu
- Department of Plastic and Burn Surgery, Shenzhen Hospital, Southern Medical University, Shenzhen, Guangdong, China
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Li J, Gao Y, Li Q, Chen L, Chen Y, Li J. LncRNA COL1A2-AS1 promotes skin fibroblast apoptosis by repressing p-Smad3 and promoting β-catenin expression. Exp Dermatol 2021; 30:1090-1098. [PMID: 33354832 DOI: 10.1111/exd.14269] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 12/09/2020] [Accepted: 12/18/2020] [Indexed: 12/12/2022]
Abstract
LncRNA COL1A2-AS1 has been demonstrated to inhibit fibroblast proliferation of hypertrophic scars. However, the function of COL1A2-AS1 in normal skin fibroblasts remains poorly studied. Here, we report that overexpression of COL1A2-AS1 promoted normal skin fibroblast apoptosis. On the basis of mRNA-seq data and gene set enrichment analysis plus Kyoto encyclopedia of genes and genomes pathway analysis, 16 upregulated and 125 downregulated mRNAs were found; TGF-β, Wnt, and MAPK pathways were potentially involved. Western blot assay confirmed that overexpression of COL1A2-AS1 repressed p-Smad3 expression and promoted β-catenin expression. Furthermore, COL1A2-AS1 overexpression combined with either TGF-β1 or siRNA against β-catenin reversed the upregulation of apoptosis in the COL1A2-AS1 overexpression group. In conclusion, our study revealed the roles of COL1A2-AS1 in normal skin fibroblast apoptosis, with COL1A2-AS1 functioning by repressing p-Smad3 expression and promoting β-catenin expression.
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Affiliation(s)
- Jun Li
- Department of Plastic & Cosmetic Surgery, Women's Hospital of Nanjing Medical University (Nanjing Maternity and Child Health Care Hospital), Nanjing, China
| | - Yanli Gao
- Department of Plastic & Cosmetic Surgery, Women's Hospital of Nanjing Medical University (Nanjing Maternity and Child Health Care Hospital), Nanjing, China
| | - Qian Li
- Department of Plastic & Cosmetic Surgery, Women's Hospital of Nanjing Medical University (Nanjing Maternity and Child Health Care Hospital), Nanjing, China
| | - Ling Chen
- Department of Plastic & Cosmetic Surgery, Women's Hospital of Nanjing Medical University (Nanjing Maternity and Child Health Care Hospital), Nanjing, China
| | - Yajun Chen
- Department of Clinical laboratory, Women's Hospital of Nanjing Medical University (Nanjing Maternity and Child Health Care Hospital), Nanjing, China
| | - Jingyun Li
- Nanjing Maternal and Child Health Medical Institute, Women's Hospital of Nanjing Medical University (Nanjing Maternity and Child Health Care Hospital), Nanjing, China
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Shi J, Guo S, Wu Y, Chen G, Lai J, Xu X. Behaviour of cell penetrating peptide TAT-modified liposomes loaded with salvianolic acid B on the migration, proliferation, and survival of human skin fibroblasts. J Liposome Res 2019; 30:93-106. [DOI: 10.1080/08982104.2019.1593451] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Jun Shi
- Department of Traditional Chinese Medicine, Guangdong Pharmaceutical University of China, Guangzhou, PR China
- Guangdong Engineering & Technology Research of topical precise drug delivery system, Guangzhou Higher Education Mega Center, Guangdong, PR China
| | - Siyi Guo
- Department of Traditional Chinese Medicine, Guangdong Pharmaceutical University of China, Guangzhou, PR China
| | - Yanting Wu
- Department of Traditional Chinese Medicine, Guangdong Pharmaceutical University of China, Guangzhou, PR China
| | - Guitian Chen
- Department of Traditional Chinese Medicine, Guangdong Pharmaceutical University of China, Guangzhou, PR China
| | - Jianhui Lai
- Department of Traditional Chinese Medicine, Guangdong Pharmaceutical University of China, Guangzhou, PR China
| | - Xiaoqi Xu
- Department of Traditional Chinese Medicine, Guangdong Pharmaceutical University of China, Guangzhou, PR China
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Qin Z, Chen F, Chen D, Wang Y, Tan Y, Ban J. Transdermal permeability of triamcinolone acetonide lipid nanoparticles. Int J Nanomedicine 2019; 14:2485-2495. [PMID: 31040670 PMCID: PMC6459147 DOI: 10.2147/ijn.s195769] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Background Triamcinolone acetonide (TAA) is an effective and the most commonly used corticosteroid hormone for the treatment of hypertrophic scars (HSs). However, the clinically used dosage has poor tissue permeability and injection safety. By contrast, lipid nanoparticles (LNPs) have the advantage of high affinity for the skin. Materials and methods This article describes the preparation of TAA-LNPs using poly(lactic-co-glycolic acid) as a carrier material, which have good biocompatibility and biodegradability. Based on a systematic investigation of its physicochemical properties, a rabbit ear HSs model was established to evaluate the percutaneous permeability of TAA-LNPs in scar tissue in vitro as well as to assess its curative effect and skin irritation. Results The results showed that the TAA-LNPs formed uniform and round particles under fluoroscopy and had a complex structure in which a nanoparticle core was surrounded by multiple vesicles. The particles were 232.2±8.2 nm in size, and the complimentary potential was -42.16 mV. The encapsulation efficiency was 85.24%, which is greater than that of other common liposomes and nanoparticles. A test of in vitro scar tissue permeability showed that penetration into scar tissue was twofold and 40-fold higher for TAA-LNPs than for common liposome and commercial suspensions, respectively. The concentration of the absorbed drug effectively inhibited fibroblast proliferation, achieved a therapeutic effect in HSs, and did not stimulate intact or damaged skin. Conclusion The preparation of TAA into LNPs for transdermal administration can enhance transdermal permeation performance and the safety of this drug, which is beneficial for the treatment of HSs.
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Affiliation(s)
- Zhenmiao Qin
- School of Pharmacy, Hainan Medical University, Haikou, People's Republic of China,
| | - Feng Chen
- School of Pharmacy, Hainan Medical University, Haikou, People's Republic of China, .,Hainan Provincial Key Laboratory of R&D of Tropical Herbs, Hainan Medical University, Haikou, People's Republic of China,
| | - Demei Chen
- School of Pharmacy, Hainan Medical University, Haikou, People's Republic of China,
| | - Yong Wang
- School of Pharmacy, Hainan Medical University, Haikou, People's Republic of China, .,Hainan Provincial Key Laboratory of R&D of Tropical Herbs, Hainan Medical University, Haikou, People's Republic of China,
| | - Yinfeng Tan
- School of Pharmacy, Hainan Medical University, Haikou, People's Republic of China, .,Hainan Provincial Key Laboratory of R&D of Tropical Herbs, Hainan Medical University, Haikou, People's Republic of China,
| | - Junfeng Ban
- Guangdong Provincial Key Laboratory of Advanced Drug Delivery Systems, Guangdong Pharmaceutical University, Guangzhou, People's Republic of China,
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