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Liu J, Yu J, Chen H, Zou Y, Wang Y, Zhou C, Tong L, Wang P, Liu T, Liang J, Sun Y, Zhang X, Fan Y. Porous gradient hydrogel promotes skin regeneration by angiogenesis. J Colloid Interface Sci 2024; 671:312-324. [PMID: 38815368 DOI: 10.1016/j.jcis.2024.05.075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Revised: 04/24/2024] [Accepted: 05/10/2024] [Indexed: 06/01/2024]
Abstract
The skin has a multilayered structure, and deep-seated injuries are exposed to external microbial invasion and in vivo microenvironmental destabilization. Here, a bilayer bionic skin scaffold (Bilayer SF) was developed based on methacrylated sericin protein to mimic the skin's multilayered structure and corresponding functions. The outer layer (SF@TA), which mimics the epidermal layer, was endowed with the function of resisting external bacterial and microbial invasion using a small pore structure and bio-crosslinking with tannic acid (TA). The inner layer (SF@DA@Gel), which mimics the dermal layer, was used to promote cellular growth using a large pore structure and introducing dopamine (DA) to regulate the wound microenvironment. This Bilayer SF showed good mechanical properties and structural stability, satisfactory antioxidant and promote cell proliferation and migration abilities. In vitro studies confirmed the antimicrobial properties of the outer layer and the pro-angiogenic ability of the inner layer. In vivo animal studies demonstrated that the bilayer scaffolds promoted collagen deposition, neovascularization, and marginal hair follicle formation, which might be a promising new bionic skin scaffold.
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Affiliation(s)
- Jingyi Liu
- National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, PR China; College of Biomedical Engineering, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, PR China
| | - Jingwen Yu
- National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, PR China; College of Biomedical Engineering, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, PR China
| | - Huiling Chen
- National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, PR China; College of Biomedical Engineering, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, PR China
| | - Yaping Zou
- National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, PR China; College of Biomedical Engineering, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, PR China
| | - Yuxiang Wang
- National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, PR China; College of Biomedical Engineering, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, PR China
| | - Chen Zhou
- National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, PR China; College of Biomedical Engineering, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, PR China
| | - Lei Tong
- National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, PR China; College of Biomedical Engineering, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, PR China
| | - Peilei Wang
- National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, PR China; College of Biomedical Engineering, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, PR China
| | - Tangjinhai Liu
- National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, PR China; College of Biomedical Engineering, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, PR China
| | - Jie Liang
- National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, PR China; College of Biomedical Engineering, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, PR China; Sichuan Testing Center for Biomaterials and Medical Devices, Sichuan University, 29 Wangjiang Road, Chengdu 610064, PR China
| | - Yong Sun
- National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, PR China; College of Biomedical Engineering, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, PR China.
| | - Xingdong Zhang
- National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, PR China; College of Biomedical Engineering, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, PR China
| | - Yujiang Fan
- National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, PR China; College of Biomedical Engineering, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, PR China.
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Wang M, Hong Y, Fu X, Sun X. Advances and applications of biomimetic biomaterials for endogenous skin regeneration. Bioact Mater 2024; 39:492-520. [PMID: 38883311 PMCID: PMC11179177 DOI: 10.1016/j.bioactmat.2024.04.011] [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: 12/08/2023] [Revised: 04/11/2024] [Accepted: 04/11/2024] [Indexed: 06/18/2024] Open
Abstract
Endogenous regeneration is becoming an increasingly important strategy for wound healing as it facilitates skin's own regenerative potential for self-healing, thereby avoiding the risks of immune rejection and exogenous infection. However, currently applied biomaterials for inducing endogenous skin regeneration are simplistic in their structure and function, lacking the ability to accurately mimic the intricate tissue structure and regulate the disordered microenvironment. Novel biomimetic biomaterials with precise structure, chemical composition, and biophysical properties offer a promising avenue for achieving perfect endogenous skin regeneration. Here, we outline the recent advances in biomimetic materials induced endogenous skin regeneration from the aspects of structural and functional mimicry, physiological process regulation, and biophysical property design. Furthermore, novel techniques including in situ reprograming, flexible electronic skin, artificial intelligence, single-cell sequencing, and spatial transcriptomics, which have potential to contribute to the development of biomimetic biomaterials are highlighted. Finally, the prospects and challenges of further research and application of biomimetic biomaterials are discussed. This review provides reference to address the clinical problems of rapid and high-quality skin regeneration.
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Affiliation(s)
- Mengyang Wang
- Research Center for Tissue Repair and Regeneration Affiliated to the Medical Innovation Research Department, PLA General Hospital and PLA Medical College, Beijing, 100853, PR China
- PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, Beijing, 100089, PR China
| | - Yiyue Hong
- Research Center for Tissue Repair and Regeneration Affiliated to the Medical Innovation Research Department, PLA General Hospital and PLA Medical College, Beijing, 100853, PR China
- PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, Beijing, 100089, PR China
| | - Xiaobing Fu
- Research Center for Tissue Repair and Regeneration Affiliated to the Medical Innovation Research Department, PLA General Hospital and PLA Medical College, Beijing, 100853, PR China
- PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, Beijing, 100089, PR China
- Research Unit of Trauma Care, Tissue Repair and Regeneration, Chinese Academy of Medical Sciences, 2019RU051, Beijing, 100048, PR China
| | - Xiaoyan Sun
- Research Center for Tissue Repair and Regeneration Affiliated to the Medical Innovation Research Department, PLA General Hospital and PLA Medical College, Beijing, 100853, PR China
- PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, Beijing, 100089, PR China
- Research Unit of Trauma Care, Tissue Repair and Regeneration, Chinese Academy of Medical Sciences, 2019RU051, Beijing, 100048, PR China
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Katiyar S, Tripathi AD, Singh RK, Kumar Chaurasia A, Srivastava PK, Mishra A. Graphene-silymarin-loaded chitosan/gelatin/hyaluronic acid hybrid constructs for advanced full-thickness burn wound management. Int J Pharm 2024; 659:124238. [PMID: 38768692 DOI: 10.1016/j.ijpharm.2024.124238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Revised: 05/01/2024] [Accepted: 05/15/2024] [Indexed: 05/22/2024]
Abstract
Burn wounds (BWs) with extensive blood loss, along with bacterial infections and poor healing, may become detrimental and pose significant rehabilitation obstacles in medical facilities. Therefore, the freeze-drying method synthesized novel hemocompatible chitosan, gelatin, and hyaluronic acid infused with graphene oxide-silymarin (CGH-SGO) hybrid constructs for application as a BW patch. Most significantly, synthesized hybrid constructs exhibited an interconnected-porous framework with precise pore sizes (≈118.52 µm) conducive to biological functions. Furthermore, the FTIR and XRD analyses document the constructs' physiochemical interactions. Similarly, enhanced swelling ratios, adequate WVTR (736 ± 78 g m-2 hr-1), and bio-degradation rates were seen during the physiological examination of constructs. Following the in vitro investigations, SMN-GO added to constructs improved their anti-bacterial (against E.coli and S. aureus), anti-oxidant, hemocompatible, and bio-compatible characteristics in conjunction with prolonged drug release. Furthermore, in vivo, implanting constructs on wounds exhibited significant acceleration in full-thickness burn wound (FT-BW) healing on the 14th day (CGH-SGO: 95 ± 2.1 %) in contrast with the control (Gauze: 71 ± 4.2 %). Additionally, contrary to gauze, the in vivo rat tail excision model administered with constructs assured immediate blood clotting. Therefore, CGH-SGO constructs with an improved porous framework, anti-bacterial activity, hemocompatibility, and biocompatibility could represent an attractive option for healing FT-BWs.
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Affiliation(s)
- Soumya Katiyar
- School of Biochemical Engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, India
| | - Abhay Dev Tripathi
- School of Biochemical Engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, India
| | - Ritika K Singh
- School of Biotechnology, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Avinash Kumar Chaurasia
- School of Biotechnology, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Pradeep K Srivastava
- School of Biochemical Engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, India
| | - Abha Mishra
- School of Biochemical Engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, India.
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Kang Y, Liu K, Chen Z, Guo J, Xiang K, Wu X, Jiang T, Chen J, Yan C, Jiang G, Wang Y, Zhang M, Xiang X, Dai H, Yang X. Healing with precision: A multi-functional hydrogel-bioactive glass dressing boosts infected wound recovery and enhances neurogenesis in the wound bed. J Control Release 2024; 370:210-229. [PMID: 38648955 DOI: 10.1016/j.jconrel.2024.04.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Revised: 03/31/2024] [Accepted: 04/19/2024] [Indexed: 04/25/2024]
Abstract
Chronic skin wounds, especially infected ones, pose a significant clinical challenge due to their increasing incidence and poor outcomes. The deteriorative microenvironment in such wounds, characterized by reduced extracellular matrix, impaired angiogenesis, insufficient neurogenesis, and persistent bacterial infection, has prompted the exploration of novel therapeutic strategies. In this study, we developed an injectable multifunctional hydrogel (GEL/BG@Cu + Mg) incorporating Gelatin-Tannic acid/ N-hydroxysuccinimide functionalized polyethylene glycol and Bioactive glass doped with copper and magnesium ions to accelerate the healing of infected wounds. The GEL/BG@Cu + Mg hydrogel composite demonstrates good biocompatibility, degradability, and rapid formation of a protective barrier to stop bleeding. Synergistic bactericidal effects are achieved through the photothermal properties of BG@Cu + Mg and sustained copper ions release, with the latter further promoting angiogenesis. Furthermore, the hydrogel enhances neurogenesis by stimulating axons and Schwann cells in the wound bed through the beneficial effects of magnesium ions. Our results demonstrate that the designed novel multifunctional hydrogel holds tremendous promise for treating infected wounds and allowing regenerative neurogenesis at the wound site, which provides a viable alternative for further improving clinical outcomes.
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Affiliation(s)
- Yu Kang
- Department of Hand Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Kun Liu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Biomedical Materials and Engineering Research Center of Hubei Province, Wuhan 430070, China
| | - Zhenbing Chen
- Department of Hand Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Jiahe Guo
- Department of Hand Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Kaituo Xiang
- Department of Hand Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Xiaopei Wu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Biomedical Materials and Engineering Research Center of Hubei Province, Wuhan 430070, China
| | - Tao Jiang
- Department of Hand Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Jing Chen
- Department of Hand Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Chenqi Yan
- Department of Hand Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Guoyong Jiang
- Department of Hand Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Yufeng Wang
- Department of Hand Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Maojie Zhang
- Department of Hand Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Xuejiao Xiang
- Department of Hand Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Honglian Dai
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Biomedical Materials and Engineering Research Center of Hubei Province, Wuhan 430070, China; Chaozhou Branch of Chemistry and Chemical Engineering Guangdong Laboratory, Chaozhou 521000, China.
| | - Xiaofan Yang
- Department of Hand Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
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von Fritschen U, Strunz C, Scherer R, Fricke A. Sensitivity after Clitoral Reconstruction in Patients with Female Genital Mutilation. PLASTIC AND RECONSTRUCTIVE SURGERY-GLOBAL OPEN 2024; 12:e5851. [PMID: 38881961 PMCID: PMC11177814 DOI: 10.1097/gox.0000000000005851] [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: 01/25/2024] [Accepted: 04/08/2024] [Indexed: 06/18/2024]
Abstract
Background In the past decades, reconstructive choices after female genital mutilation extended beyond de-infibulation and scar release. The current trend to expand techniques addressing sexual and aesthetic aspects by reconstructing the clitoris and prepuce, and dissecting the clitoral nerves raises concern, as there is a paucity of evidence on the functional outcomes and suspected iatrogenic lacerations. Methods A total of 128 female genital mutilation patients were included in the study. To evaluate clitoral sensitivity after elevation, the Semmes-Weinstein-monofilament test was performed before and after genital reconstruction. Results Preoperatively, patients with a visually intact clitoris showed significantly better sensitivity compared with patients with a mutilated clitoris or infibulation (P < 0.0001). Surgery was performed in 84 patients. After clitoral reconstruction (CR), 70 of 73 patients were able to perceive 2.83 monofilaments (95.9%), whereas three perceived 3.61. Patients with a visually intact clitoris served as control, and 95.0% perceived 2.83 monofilaments. We showed a significant improvement of clitoral sensitivity (P = 0.0020) in the subgroup consisting of patients with a mutilated clitoris in whom the test was performed before and after reconstruction. Conclusions Clitoral sensitivity improves significantly after CR. Seventy of 73 patients attained the same sensitivity as unharmed women. No patient showed a decreased sensitivity compared with their preoperative findings. Therefore, our study supports the argument that CR offers sufficient improvement of objective clitoral sensitivity without additionally addressing clitoral nerves.
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Affiliation(s)
- Uwe von Fritschen
- From the Department of Plastic and Aesthetic Surgery, Hand Surgery, HELIOS Hospital Emil von Behring, Berlin, Germany
- Centre of Plastic, Aesthetic, Hand and Reconstructive Surgery, University of Regensburg, Regensburg, Germany
| | - Cornelia Strunz
- Desert Flower Center, Center of Colorectal and Pelvic Floor Surgery, Hospital Waldfriede, Berlin, Germany
| | - Roland Scherer
- Desert Flower Center, Center of Colorectal and Pelvic Floor Surgery, Hospital Waldfriede, Berlin, Germany
| | - Alba Fricke
- From the Department of Plastic and Aesthetic Surgery, Hand Surgery, HELIOS Hospital Emil von Behring, Berlin, Germany
- Department of Plastic and Hand Surgery, University of Freiburg Medical Centre, Medical Faculty of the University of Freiburg, Freiburg, Germany
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Zhang Y, Zouboulis CC, Xiao Z. Exosomes from adipose-derived stem cells activate sebocytes through the PI3K/AKT/SREBP-1 pathway to accelerate wound healing. Cell Tissue Res 2024; 396:329-342. [PMID: 38411945 PMCID: PMC11144157 DOI: 10.1007/s00441-024-03872-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Accepted: 01/25/2024] [Indexed: 02/28/2024]
Abstract
Sebocyte regeneration after injury is considered a key element of functional skin repair. Exosomes from adipose-derived stem cells (ADSCs-EXO) accelerate wound healing by promoting the proliferation of fibroblasts. However, the effects of ADSCs-EXO on sebocytes are largely unknown. In this study, the effects of ADSCs-EXO on sebocyte proliferation and migration were evaluated. The levels of phosphorylated AKT (p-AKT), AKT, sterol regulatory-element binding protein (SREBP), and perilipin-1 (PLIN-1) were detected with immunofluorescence, quantitative PCR, and western blot analysis. RNA-Seq was used to analyze the differential gene expression between the ADSCs-EXO group and the control group under anaerobic conditions. Lipogenesis was assessed with Nile red staining. In animal studies, full-thickness skin wounds in BALB/c mice were treated with gelatin methacrylate (GelMA) hydrogel-loaded sebocytes alone or in combination with ADSCs-EXO. Histopathological assessments of the wound tissues were performed Masson Trichrome staining, Immunohistochemical staining and so on. The phosphatidylinositol 3-kinase (PI3K)/AKT pathway blocker LY294002 inhibited the effects of ADSCs-EXO on p-AKT and sebocytes proliferation. ADSCs-EXO also regulated the expression of SREBP-1 and PLIN-1 through the PI3K/AKT pathway in an oxygen level-dependent manner. In BALB/c mice, ADSCs-EXO accelerated sebocyte-assisted wound healing and regeneration. These in vitro and in vivo results supported that ADSCs-EXO can promote the regeneration of fully functional skin after injury through the PI3K/AKT-dependent activation of sebocytes.
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Affiliation(s)
- Yingbo Zhang
- Department of Plastic and Aesthetic Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, 150081, People's Republic of China
| | - Christos C Zouboulis
- Departments of Dermatology, Venereology, Allergology and Immunology, Dessau Medical Center, Brandenburg Medical School Theodor Fontane and Faculty of Health Sciences Brandenburg, Dessau, Germany
| | - Zhibo Xiao
- Department of Plastic and Aesthetic Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, 150081, People's Republic of China.
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Kwak S, Song CL, Lee J, Kim S, Nam S, Park YJ, Lee J. Development of pluripotent stem cell-derived epidermal organoids that generate effective extracellular vesicles in skin regeneration. Biomaterials 2024; 307:122522. [PMID: 38428092 DOI: 10.1016/j.biomaterials.2024.122522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 02/03/2024] [Accepted: 02/22/2024] [Indexed: 03/03/2024]
Abstract
Cellular skin substitutes such as epidermal constructs have been developed for various applications, including wound healing and skin regeneration. These cellular models are mostly derived from primary cells such as keratinocytes and fibroblasts in a two-dimensional (2D) state, and further development of three-dimensional (3D) cultured organoids is needed to provide insight into the in vivo epidermal phenotype and physiology. Here, we report the development of epidermal organoids (EpiOs) generated from induced pluripotent stem cells (iPSCs) as a novel epidermal construct and its application as a source of secreted biomolecules recovered by extracellular vesicles (EVs) that can be utilized for cell-free therapy of regenerative medicine. Differentiated iPSC-derived epidermal organoids (iEpiOs) are easily cultured and expanded through multiple organoid passages, while retaining molecular and functional features similar to in vivo epidermis. These mature iEpiOs contain epidermal stem cell populations and retain the ability to further differentiate into other skin compartment lineages, such as hair follicle stem cells. By closely recapitulating the epidermal structure, iEpiOs are expected to provide a more relevant microenvironment to influence cellular processes and therapeutic response. Indeed, iEpiOs can generate high-performance EVs containing high levels of the angiogenic growth factor VEGF and miRNAs predicted to regulate cellular processes such as proliferation, migration, differentiation, and angiogenesis. These EVs contribute to target cell proliferation, migration, and angiogenesis, providing a promising therapeutic tool for in vivo wound healing. Overall, the newly developed iEpiOs strategy as an organoid-based approach provides a powerful model for studying basic and translational skin research and may also lead to future therapeutic applications using iEpiOs-secreted EVs.
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Affiliation(s)
- Sojung Kwak
- Developmental Biology Laboratory, Environmental Disease Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 34141, Republic of Korea
| | - Cho Lok Song
- Developmental Biology Laboratory, Environmental Disease Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 34141, Republic of Korea
| | - Jinhyuk Lee
- Department of Bioscience, KRIBB School, University of Science and Technology, Daejeon 34141, Republic of Korea; Disease Target Structure Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 34141, Republic of Korea
| | - Sungyeon Kim
- Department of Genome Medicine and Science, AI Convergence Center for Medical Science, Gachon Institute of Genome Medicine and Science, Gachon University Gil Medical Center, Gachon University College of Medicine, Incheon 21565, Republic of Korea
| | - Seungyoon Nam
- Department of Genome Medicine and Science, AI Convergence Center for Medical Science, Gachon Institute of Genome Medicine and Science, Gachon University Gil Medical Center, Gachon University College of Medicine, Incheon 21565, Republic of Korea; Department of Health Sciences and Technology, Gachon Advanced Institute for Health Sciences and Technology, Gachon University, Incheon 21999, Republic of Korea
| | - Young-Jun Park
- Department of Bioscience, KRIBB School, University of Science and Technology, Daejeon 34141, Republic of Korea; Environmental Disease Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 34141, Republic of Korea
| | - Jungwoon Lee
- Developmental Biology Laboratory, Environmental Disease Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 34141, Republic of Korea; Department of Bioscience, KRIBB School, University of Science and Technology, Daejeon 34141, Republic of Korea.
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Zhang Z, Chang D, Zeng Z, Xu Y, Yu J, Fan C, Yang C, Chang J. CuCS/Cur composite wound dressings promote neuralized skin regeneration by rebuilding the nerve cell "factory" in deep skin burns. Mater Today Bio 2024; 26:101075. [PMID: 38736614 PMCID: PMC11087995 DOI: 10.1016/j.mtbio.2024.101075] [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: 02/20/2024] [Revised: 04/15/2024] [Accepted: 04/27/2024] [Indexed: 05/14/2024] Open
Abstract
Regenerating skin nerves in deep burn wounds poses a significant clinical challenge. In this study, we designed an electrospun wound dressing called CuCS/Cur, which incorporates copper-doped calcium silicate (CuCS) and curcumin (Cur). The unique wound dressing releases a bioactive Cu2+-Cur chelate that plays a crucial role in addressing this challenge. By rebuilding the "factory" (hair follicle) responsible for producing nerve cells, CuCS/Cur induces a high expression of nerve-related factors within the hair follicle cells and promotes an abundant source of nerves for burn wounds. Moreover, the Cu2+-Cur chelate activates the differentiation of nerve cells into a mature nerve cell network, thereby efficiently promoting the reconstruction of the neural network in burn wounds. Additionally, the Cu2+-Cur chelate significantly stimulates angiogenesis in the burn area, ensuring ample nutrients for burn wound repair, hair follicle regeneration, and nerve regeneration. This study confirms the crucial role of chelation synergy between bioactive ions and flavonoids in promoting the regeneration of neuralized skin through wound dressings, providing valuable insights for the development of new biomaterials aimed at enhancing neural repair.
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Affiliation(s)
- Zhaowenbin Zhang
- Joint Centre of Translational Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, People's Republic of China
- Zhejiang Engineering Research Center for Tissue Repair Materials, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, 325000, People's Republic of China
- State Key Laboratory of High-Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, People's Republic of China
| | - Di Chang
- Joint Centre of Translational Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, People's Republic of China
- Zhejiang Engineering Research Center for Tissue Repair Materials, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, 325000, People's Republic of China
- State Key Laboratory of High-Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, People's Republic of China
- Fudan University, Shanghai, 200433, People's Republic of China
| | - Zhen Zeng
- Joint Centre of Translational Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, People's Republic of China
- Zhejiang Engineering Research Center for Tissue Repair Materials, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, 325000, People's Republic of China
- State Key Laboratory of High-Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, People's Republic of China
- Key Laboratory of Rehabilitation Medicine in Sichuan Province, West China Hospital, Sichuan University, Chengdu, People's Republic of China
- The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, People's Republic of China
| | - Yuze Xu
- State Key Laboratory of High-Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, People's Republic of China
| | - Jing Yu
- Joint Centre of Translational Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, People's Republic of China
- Zhejiang Engineering Research Center for Tissue Repair Materials, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, 325000, People's Republic of China
- State Key Laboratory of High-Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, People's Republic of China
| | - Chen Fan
- Joint Centre of Translational Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, People's Republic of China
- Zhejiang Engineering Research Center for Tissue Repair Materials, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, 325000, People's Republic of China
- State Key Laboratory of High-Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, People's Republic of China
| | - Chen Yang
- Joint Centre of Translational Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, People's Republic of China
- Zhejiang Engineering Research Center for Tissue Repair Materials, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, 325000, People's Republic of China
- State Key Laboratory of High-Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, People's Republic of China
| | - Jiang Chang
- Joint Centre of Translational Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, People's Republic of China
- Zhejiang Engineering Research Center for Tissue Repair Materials, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, 325000, People's Republic of China
- State Key Laboratory of High-Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, People's Republic of China
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Shashikumar U, Saraswat A, Deshmukh K, Hussain CM, Chandra P, Tsai PC, Huang PC, Chen YH, Ke LY, Lin YC, Chawla S, Ponnusamy VK. Innovative technologies for the fabrication of 3D/4D smart hydrogels and its biomedical applications - A comprehensive review. Adv Colloid Interface Sci 2024; 328:103163. [PMID: 38749384 DOI: 10.1016/j.cis.2024.103163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 03/18/2024] [Accepted: 04/21/2024] [Indexed: 05/26/2024]
Abstract
Repairing and regenerating damaged tissues or organs, and restoring their functioning has been the ultimate aim of medical innovations. 'Reviving healthcare' blends tissue engineering with alternative techniques such as hydrogels, which have emerged as vital tools in modern medicine. Additive manufacturing (AM) is a practical manufacturing revolution that uses building strategies like molding as a viable solution for precise hydrogel manufacturing. Recent advances in this technology have led to the successful manufacturing of hydrogels with enhanced reproducibility, accuracy, precision, and ease of fabrication. Hydrogels continue to metamorphose as the vital compatible bio-ink matrix for AM. AM hydrogels have paved the way for complex 3D/4D hydrogels that can be loaded with drugs or cells. Bio-mimicking 3D cell cultures designed via hydrogel-based AM is a groundbreaking in-vivo assessment tool in biomedical trials. This brief review focuses on preparations and applications of additively manufactured hydrogels in the biomedical spectrum, such as targeted drug delivery, 3D-cell culture, numerous regenerative strategies, biosensing, bioprinting, and cancer therapies. Prevalent AM techniques like extrusion, inkjet, digital light processing, and stereo-lithography have been explored with their setup and methodology to yield functional hydrogels. The perspectives, limitations, and the possible prospects of AM hydrogels have been critically examined in this study.
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Affiliation(s)
- Uday Shashikumar
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University (KMU), Kaohsiung City 807, Taiwan
| | - Aditya Saraswat
- Department of Chemistry, Amity Institute of Applied Sciences, Amity University, Noida, UP, India
| | - Kalim Deshmukh
- New Technologies - Research Centre University of West Bohemia Univerzitní 2732/8, 30100, Plzeň, Czech Republic
| | - Chaudhery Mustansar Hussain
- Department of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark, NJ 07102, United States
| | - Pranjal Chandra
- Laboratory of Bio-Physio Sensors and Nanobioengineering, School of Biochemical Engineering, Indian Institute of Technology (BHU) Varanasi, Uttar Pradesh, India
| | - Pei-Chien Tsai
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University (KMU), Kaohsiung City 807, Taiwan; Department of Computational Biology, Institute of Bioinformatics, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Chennai 602105, Tamil Nadu, India
| | - Po-Chin Huang
- National Institute of Environmental Health Sciences, National Health Research Institutes (NHRI), Miaoli County 35053, Taiwan; Research Center for Precision Environmental Medicine, Kaohsiung Medical University (KMU), Kaohsiung City 807, Taiwan; Department of Medical Research, China Medical University Hospital (CMUH), China Medical University (CMU), Taichung City, Taiwan
| | - Yi-Hsun Chen
- Division of Gastroenterology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung City, Taiwan.
| | - Liang-Yin Ke
- Department of Medical Laboratory Science and Biotechnology, College of Health Sciences, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Yuan-Chung Lin
- Institute of Environmental Engineering, National Sun Yat-sen University (NSYSU), Kaohsiung City 804, Taiwan; Center for Emerging Contaminants Research, National Sun Yat-sen University (NSYSU), Kaohsiung City 804, Taiwan.
| | - Shashi Chawla
- Department of Chemistry, Amity Institute of Applied Sciences, Amity University, Noida, UP, India.
| | - Vinoth Kumar Ponnusamy
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University (KMU), Kaohsiung City 807, Taiwan; Research Center for Precision Environmental Medicine, Kaohsiung Medical University (KMU), Kaohsiung City 807, Taiwan; Department of Medical Laboratory Science and Biotechnology, College of Health Sciences, Kaohsiung Medical University, Kaohsiung, Taiwan; Center for Emerging Contaminants Research, National Sun Yat-sen University (NSYSU), Kaohsiung City 804, Taiwan; Department of Medical Research, Kaohsiung Medical University Hospital (KMUH), Kaohsiung City 807, Taiwan; Department of Chemistry, National Sun Yat-sen University (NSYSU), Kaohsiung City 804, Taiwan.
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10
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Liu H, Xing F, Yu P, Zhe M, Duan X, Liu M, Xiang Z, Ritz U. A review of biomacromolecule-based 3D bioprinting strategies for structure-function integrated repair of skin tissues. Int J Biol Macromol 2024; 268:131623. [PMID: 38642687 DOI: 10.1016/j.ijbiomac.2024.131623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 04/09/2024] [Accepted: 04/13/2024] [Indexed: 04/22/2024]
Abstract
When skin is damaged or affected by diseases, it often undergoes irreversible scar formation, leading to aesthetic concerns and psychological distress for patients. In cases of extensive skin defects, the patient's life can be severely compromised. In recent years, 3D printing technology has emerged as a groundbreaking approach to skin tissue engineering, offering promising solutions to various skin-related conditions. 3D bioprinting technology enables the precise fabrication of structures by programming the spatial arrangement of cells within the skin tissue and subsequently printing skin replacements either in a 3D bioprinter or directly at the site of the defect. This study provides a comprehensive overview of various biopolymer-based inks, with a particular emphasis on chitosan (CS), starch, alginate, agarose, cellulose, and fibronectin, all of which are natural polymers belonging to the category of biomacromolecules. Additionally, it summarizes artificially synthesized polymers capable of enhancing the performance of these biomacromolecule-based bioinks, thereby composing hybrid biopolymer inks aimed at better application in skin tissue engineering endeavors. This review paper examines the recent advancements, characteristics, benefits, and limitations of biological 3D bioprinting techniques for skin tissue engineering. By utilizing bioinks containing seed cells, hydrogels with bioactive factors, and biomaterials, complex structures resembling natural skin can be accurately fabricated in a layer-by-layer manner. The importance of biological scaffolds in promoting skin wound healing and the role of 3D bioprinting in skin tissue regeneration processes is discussed. Additionally, this paper addresses the challenges and constraints associated with current 3D bioprinting technologies for skin tissue and presents future perspectives. These include advancements in bioink formulations, full-thickness skin bioprinting, vascularization strategies, and skin appendages bioprinting.
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Affiliation(s)
- Hao Liu
- Department of Orthopedic Surgery, Orthopedic Research Institute, Laboratory of Stem Cell and Tissue Engineering, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Fei Xing
- Department of Pediatric Surgery, Orthopedic Research Institute, West China Hospital, Sichuan University, 610041 Chengdu, China
| | - Peiyun Yu
- LIMES Institute, Department of Molecular Brain Physiology and Behavior, University of Bonn, Carl-Troll-Str. 31, 53115 Bonn, Germany
| | - Man Zhe
- Animal Experiment Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Xin Duan
- Department of Orthopedic Surgery, Orthopedic Research Institute, Laboratory of Stem Cell and Tissue Engineering, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Ming Liu
- Department of Orthopedic Surgery, Orthopedic Research Institute, Laboratory of Stem Cell and Tissue Engineering, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Zhou Xiang
- Department of Orthopedic Surgery, Orthopedic Research Institute, Laboratory of Stem Cell and Tissue Engineering, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China; Department of Orthopedics, Sanya People's Hospital, 572000 Sanya, Hainan, China.
| | - Ulrike Ritz
- Department of Orthopaedics and Traumatology, Biomatics Group, University Medical Center of the Johannes Gutenberg University, Langenbeckstr. 1, 55131 Mainz, Germany.
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11
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Shang J, Feng X, Chen Y, Gu Z, Liu Y. Human lip vermilion: Physiology and age-related changes. J Cosmet Dermatol 2024. [PMID: 38590116 DOI: 10.1111/jocd.16317] [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: 01/07/2024] [Revised: 03/06/2024] [Accepted: 03/28/2024] [Indexed: 04/10/2024]
Abstract
BACKGROUND The human lip vermilion, also known as the red lip, is important to the quality of life and has long attracted the attention of cosmetic researchers. However, there is limited existing literature on the physiological characteristics and age-related alterations in the human vermilion. OBJECTIVE We aim to provide an overview of the physiological characteristics and age-related alterations in the human vermilion. METHODS This article is a result of previous research. We conducted a literature search using various academic databases such as Google Scholar, Web of Science, and PubMed. Our findings provided a comprehensive understanding of the physiological characteristics and age-related changes of the human lip vermilion. RESULTS The human lip vermilion has a unique structure and physiological characteristics, and during the aging process, a few changes may occur in the human lip vermilion. CONCLUSION Understanding the human lip vermilion's physiological characteristics and age-related changes can provide key information for the future innovation of lip vermilion care products. Further investigations are necessary to reach a consensus on the physiological characteristics and age-related alterations in the human vermilion.
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Affiliation(s)
- Jianli Shang
- Beijing Underproved Medical Technology Co., LTD, Beijing, China
| | - Xiaoyue Feng
- Beijing Underproved Medical Technology Co., LTD, Beijing, China
| | - Yong Chen
- Beijing Underproved Medical Technology Co., LTD, Beijing, China
| | - Zhengping Gu
- Beijing Underproved Medical Technology Co., LTD, Beijing, China
| | - Youting Liu
- Beijing Underproved Medical Technology Co., LTD, Beijing, China
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12
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Mazio C, Mavaro I, Palladino A, Casale C, Urciuolo F, Banfi A, D'Angelo L, Netti PA, de Girolamo P, Imparato G, Attanasio C. Rapid innervation and physiological epidermal regeneration by bioengineered dermis implanted in mouse. Mater Today Bio 2024; 25:100949. [PMID: 38298559 PMCID: PMC10827562 DOI: 10.1016/j.mtbio.2024.100949] [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: 09/25/2023] [Revised: 01/02/2024] [Accepted: 01/06/2024] [Indexed: 02/02/2024] Open
Abstract
Tissue-engineered skin substitutes are promising tools to cover large and deep skin defects. However, the lack of a synergic and fast regeneration of the vascular network, nerves, and skin appendages limits complete skin healing and impairs functional recovery. It has been highlighted that an ideal skin substitute should mimic the structure of the native tissue to enhance clinical effectiveness. Here, we produced a pre-vascularized dermis (PVD) comprised of fibroblasts embedded in their own extracellular matrix (ECM) and a capillary-like network. Upon implantation in a mouse full-thickness skin defect model, we observed a very early innervation of the graft in 2 weeks. In addition, mouse capillaries and complete epithelialization were detectable as early as 1 week after implantation and, skin appendages developed in 2 weeks. These anatomical features underlie the interaction with the skin nerves, thus providing a further cue for reinnervation guidance. Further, the graft displays mechanical properties, collagen density, and assembly features very similar to the host tissue. Taken together our data show that the pre-existing ECM components of the PVD, physiologically organized and assembled similarly to the native tissue, support a rapid regeneration of dermal tissue. Therefore, our results suggest a promising potential for PVD in skin regeneration.
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Affiliation(s)
- Claudia Mazio
- Istituto Italiano di Tecnologia, Center for Advanced Biomaterials for HealthCare@CRIB, Italy
| | - Isabella Mavaro
- Istituto Italiano di Tecnologia, Center for Advanced Biomaterials for HealthCare@CRIB, Italy
- University of Naples Federico II, Department of Veterinary Medicine and Animal Production, Italy
| | - Antonio Palladino
- University of Naples Federico II, Department of Agricultural Sciences, Italy
| | - Costantino Casale
- University of Naples Federico II, Interdisciplinary Research Centre on Biomaterials (CRIB), Italy
| | - Francesco Urciuolo
- University of Naples Federico II, Department of Chemical, Materials and Industrial Production Engineering, Italy
| | - Andrea Banfi
- Basel University Hospital and University of Basel, Department of Biomedicine, Switzerland
| | - Livia D'Angelo
- University of Naples Federico II, Department of Veterinary Medicine and Animal Production, Italy
| | - Paolo A. Netti
- Istituto Italiano di Tecnologia, Center for Advanced Biomaterials for HealthCare@CRIB, Italy
- University of Naples Federico II, Interdisciplinary Research Centre on Biomaterials (CRIB), Italy
- University of Naples Federico II, Department of Chemical, Materials and Industrial Production Engineering, Italy
| | - Paolo de Girolamo
- University of Naples Federico II, Department of Veterinary Medicine and Animal Production, Italy
| | - Giorgia Imparato
- Istituto Italiano di Tecnologia, Center for Advanced Biomaterials for HealthCare@CRIB, Italy
| | - Chiara Attanasio
- University of Naples Federico II, Department of Veterinary Medicine and Animal Production, Italy
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13
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Peña OA, Martin P. Cellular and molecular mechanisms of skin wound healing. Nat Rev Mol Cell Biol 2024:10.1038/s41580-024-00715-1. [PMID: 38528155 DOI: 10.1038/s41580-024-00715-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/16/2024] [Indexed: 03/27/2024]
Abstract
Wound healing is a complex process that involves the coordinated actions of many different tissues and cell lineages. It requires tight orchestration of cell migration, proliferation, matrix deposition and remodelling, alongside inflammation and angiogenesis. Whereas small skin wounds heal in days, larger injuries resulting from trauma, acute illness or major surgery can take several weeks to heal, generally leaving behind a fibrotic scar that can impact tissue function. Development of therapeutics to prevent scarring and successfully repair chronic wounds requires a fuller knowledge of the cellular and molecular mechanisms driving wound healing. In this Review, we discuss the current understanding of the different phases of wound healing, from clot formation through re-epithelialization, angiogenesis and subsequent scar deposition. We highlight the contribution of different cell types to skin repair, with emphasis on how both innate and adaptive immune cells in the wound inflammatory response influence classically studied wound cell lineages, including keratinocytes, fibroblasts and endothelial cells, but also some of the less-studied cell lineages such as adipocytes, melanocytes and cutaneous nerves. Finally, we discuss newer approaches and research directions that have the potential to further our understanding of the mechanisms underpinning tissue repair.
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Affiliation(s)
- Oscar A Peña
- School of Biochemistry, University of Bristol, Bristol, UK.
| | - Paul Martin
- School of Biochemistry, University of Bristol, Bristol, UK.
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14
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Shastri M, Sharma M, Sharma K, Sharma A, Minz RW, Dogra S, Chhabra S. Cutaneous-immuno-neuro-endocrine (CINE) system: A complex enterprise transforming skin into a super organ. Exp Dermatol 2024; 33:e15029. [PMID: 38429868 DOI: 10.1111/exd.15029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Revised: 12/12/2023] [Accepted: 01/20/2024] [Indexed: 03/03/2024]
Abstract
Skin is now emerging as a complex realm of three chief systems viz. immune system, nervous system, and endocrine system. The cells involved in their intricate crosstalk, namely native skin cells, intra-cutaneous immune cells and cutaneous sensory neurons have diverse origin and distinct functions. However, recent studies have explored their role beyond their pre-defined functional boundaries, such that the cells shun their traditional functions and adopt unconventional roles. For example, the native skin cells, apart from providing for basic structural framework of skin, also perform special immune functions and participate in extensive neuro-endocrine circuitry, which were traditionally designated as functions of cutaneous resident immune cells and sensory neurons respectively. At the cellular level, this unique collaboration is brought out by special molecules called neuromediators including neurotransmitters, neuropeptides, neurotrophins, neurohormones and cytokines/chemokines. While this intricate crosstalk is essential for maintaining cutaneous homeostasis, its disruption is seen in various cutaneous diseases. Recent study models have led to a paradigm shift in our understanding of pathophysiology of many such disorders. In this review, we have described in detail the interaction of immune cells with neurons and native skin cells, role of neuromediators, the endocrine aspect in skin and current understanding of cutaneous neuro-immuno-endocrine loop in one of the commonest skin diseases, psoriasis. An accurate knowledge of this unique crosstalk can prove crucial in understanding the pathophysiology of different skin diseases and allow for generation of targeted therapeutic modalities.
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Affiliation(s)
- Malvika Shastri
- Department of Pathology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Maryada Sharma
- Department of Otolaryngology and Head & Neck Surgery, Nehru Extension Block, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Keshav Sharma
- Department of Immunopathology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Ayush Sharma
- Department of Immunopathology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Ranjana Walker Minz
- Department of Immunopathology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Sunil Dogra
- Department of Dermatology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Seema Chhabra
- Department of Immunopathology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
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15
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Mohammed RN, Aziz Sadat SA, Hassan SMA, Mohammed HF, Ramzi DO. Combinatorial Influence of Bone Marrow Aspirate Concentrate (BMAC) and Platelet-Rich Plasma (PRP) Treatment on Cutaneous Wound Healing in BALB/c Mice. J Burn Care Res 2024; 45:59-69. [PMID: 37262317 PMCID: PMC11023107 DOI: 10.1093/jbcr/irad080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Indexed: 06/03/2023]
Abstract
Bone marrow, a soft spongy tissue, is containing mesenchymal stem cells, that are well-recognized according to their self-renewability and stemness. Therefore, we hypothesized that bone marrow aspirate concentrate (BMAC) could have a pivotal influence on the process of wound healing in particular when it is combined with platelet-rich plasma (PRP). Thirty-six albino mice (BALB/c) were used in the study and they were grouped as negative-control, PRP treated, BMAC treated and BMAC plus PRP treated. An incisional wound (1 cm2) was made at the back of mouse and their wounds were treated according to their treatment plan and group allocations. Later, the skin at the treated wound sites was collected on days 7, 14, and 21 for histopathological investigation. The results showed that there was a statistically significant difference in BMAC+PRP-treated wounds over the rest of the treated groups in the acceleration of wound healing throughout the experiment by increasing the rate of wound contraction, re-epithelization process, and granulation tissue intensity with fluctuated infiltration in the number of the neutrophils, macrophages, and lymphocytes, also restoration of the epidermal and dermal thickness with less scarring and hair follicle regeneration vs to the negative-control, PRP and BMAC only treated groups. Our findings indicated that BMAC containing mesenchymal stem cells is an efficient approach, which can be used to enhance a smooth and physiopathological healing process, especially when it is used in combination with PRP.
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Affiliation(s)
- Rebar N Mohammed
- Medical Laboratory Analysis Department, College of Health Sciences, Cihan University of Sulaimaniya, Kurdistan Region, Iraq
- Department of Microbiology, College of Veterinary Medicine, University of Sulaimnai, Suleimanyah, Iraq
| | - Sadat Abdulla Aziz Sadat
- Department of Microbiology, College of Veterinary Medicine, University of Sulaimnai, Suleimanyah, Iraq
| | - Snur M A Hassan
- Department of Anatomy and Pathology, College of Veterinary Medicine, University of Sulaimnai, Suleimanyah, Iraq
| | - Hawraz Farhad Mohammed
- Department of Microbiology, College of Veterinary Medicine, University of Sulaimnai, Suleimanyah, Iraq
| | - Derin Omer Ramzi
- Department of Basic sciences, College of Veterinary Medicine, University of Sulaimnai, Suleimanyah, Iraq
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16
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Pundkar A, Shrivastav S, Chandanwale R, Jaiswal AM, Goyal S. Vasopressin-Induced Gangrene of the Bilateral Foot Digits and Right Index Finger Managed With Platelet-Rich Plasma Treatment. Cureus 2024; 16:e52229. [PMID: 38352093 PMCID: PMC10861378 DOI: 10.7759/cureus.52229] [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: 11/23/2023] [Accepted: 01/13/2024] [Indexed: 02/16/2024] Open
Abstract
Bilateral foot digit gangrene generated by vasopressin is a serious complication for which management and treatment choices are extremely difficult. This case report presents a case of vasopressin-induced gangrene that was successfully treated with platelet-rich plasma (PRP) infiltration. A 20-year-old female patient came with a history of vasopressin treatment, causing bilateral foot digit gangrene and increasing necrosis. The patient's health quickly declined, and conventional care techniques had no effect on enhancing tissue perfusion or stopping the gangrene from getting worse. In our study, we have chosen to use PRP infiltration as an experimental therapeutic technique in light of the restricted choices available. This case study demonstrates the possibility of PRP infiltration as a cutting-edge and effective treatment for vasopressin-induced bilateral foot digit gangrene. The potential of PRP to stimulate angiogenesis, tissue regeneration, and wound healing is essential for optimizing the patient's results. For vasopressin-induced gangrene, more studies are required to evaluate the efficacy of PRP infiltration as a common therapy approach. This case study highlights the important role that PRP infiltration plays in enhancing tissue perfusion, stopping the advancement of necrosis, and promoting recovery.
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Affiliation(s)
- Aditya Pundkar
- Orthopedics, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Sandeep Shrivastav
- Orthopedics, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Rohan Chandanwale
- Orthopedics, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Ankit M Jaiswal
- Orthopedics, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Saksham Goyal
- Orthopedics, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
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17
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Kim MJ, Ahn HJ, Kong D, Lee S, Kim DH, Kang KS. Modeling of solar UV-induced photodamage on the hair follicles in human skin organoids. J Tissue Eng 2024; 15:20417314241248753. [PMID: 38725732 PMCID: PMC11080775 DOI: 10.1177/20417314241248753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Accepted: 04/06/2024] [Indexed: 05/12/2024] Open
Abstract
Solar ultraviolet (sUV) exposure is known to cause skin damage. However, the pathological mechanisms of sUV on hair follicles have not been extensively explored. Here, we established a model of sUV-exposed skin and its appendages using human induced pluripotent stem cell-derived skin organoids with planar morphology containing hair follicles. Our model closely recapitulated several symptoms of photodamage, including skin barrier disruption, extracellular matrix degradation, and inflammatory response. Specifically, sUV induced structural damage and catagenic transition in hair follicles. As a potential therapeutic agent for hair follicles, we applied exosomes isolated from human umbilical cord blood-derived mesenchymal stem cells to sUV-exposed organoids. As a result, exosomes effectively alleviated inflammatory responses by inhibiting NF-κB activation, thereby suppressing structural damage and promoting hair follicle regeneration. Ultimately, our model provided a valuable platform to mimic skin diseases, particularly those involving hair follicles, and to evaluate the efficacy and underlying mechanisms of potential therapeutics.
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Affiliation(s)
- Min-Ji Kim
- Adult Stem Cell Research Center and Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
| | - Hee-Jin Ahn
- Cytotherapy R&D Center, PRIMORIS THERAPEUTICS CO., LTD., Gwangmyeong-si, Gyeonggi-do, Republic of Korea
| | - Dasom Kong
- Adult Stem Cell Research Center and Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
| | - Seunghee Lee
- Stem Cell and Regenerative Bioengineering Institute, Global R&D Center, Kangstem Biotech Co., Ltd., Geumcheon-gu, Seoul, Republic of Korea
| | - Da-Hyun Kim
- Adult Stem Cell Research Center and Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
- Department of Biotechnology, Sungshin Women’s University, Seoul, Republic of Korea
| | - Kyung-Sun Kang
- Adult Stem Cell Research Center and Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
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18
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Westphal JA, Bryan AE, Krutko M, Esfandiari L, Schutte SC, Harris GM. Innervation of an Ultrasound-Mediated PVDF-TrFE Scaffold for Skin-Tissue Engineering. Biomimetics (Basel) 2023; 9:2. [PMID: 38275450 PMCID: PMC11154284 DOI: 10.3390/biomimetics9010002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 12/05/2023] [Accepted: 12/18/2023] [Indexed: 01/27/2024] Open
Abstract
In this work, electrospun polyvinylidene-trifluoroethylene (PVDF-TrFE) was utilized for its biocompatibility, mechanics, and piezoelectric properties to promote Schwann cell (SC) elongation and sensory neuron (SN) extension. PVDF-TrFE electrospun scaffolds were characterized over a variety of electrospinning parameters (1, 2, and 3 h aligned and unaligned electrospun fibers) to determine ideal thickness, porosity, and tensile strength for use as an engineered skin tissue. PVDF-TrFE was electrically activated through mechanical deformation using low-intensity pulsed ultrasound (LIPUS) waves as a non-invasive means to trigger piezoelectric properties of the scaffold and deliver electric potential to cells. Using this therapeutic modality, neurite integration in tissue-engineered skin substitutes (TESSs) was quantified including neurite alignment, elongation, and vertical perforation into PVDF-TrFE scaffolds. Results show LIPUS stimulation promoted cell alignment on aligned scaffolds. Further, stimulation significantly increased SC elongation and SN extension separately and in coculture on aligned scaffolds but significantly decreased elongation and extension on unaligned scaffolds. This was also seen in cell perforation depth analysis into scaffolds which indicated LIPUS enhanced perforation of SCs, SNs, and cocultures on scaffolds. Taken together, this work demonstrates the immense potential for non-invasive electric stimulation of an in vitro tissue-engineered-skin model.
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Affiliation(s)
- Jennifer A. Westphal
- Department of Biomedical Engineering, University of Cincinnati, Cincinnati, OH 45221, USA; (J.A.W.); (M.K.); (L.E.); (S.C.S.)
| | - Andrew E. Bryan
- Department of Chemical and Environmental Engineering, University of Cincinnati, Cincinnati, OH 45221, USA;
| | - Maksym Krutko
- Department of Biomedical Engineering, University of Cincinnati, Cincinnati, OH 45221, USA; (J.A.W.); (M.K.); (L.E.); (S.C.S.)
| | - Leyla Esfandiari
- Department of Biomedical Engineering, University of Cincinnati, Cincinnati, OH 45221, USA; (J.A.W.); (M.K.); (L.E.); (S.C.S.)
- Department of Environmental and Public Health Sciences, University of Cincinnati, Cincinnati, OH 45267, USA
- Department of Electrical and Computer Science, University of Cincinnati, Cincinnati, OH 45221, USA
| | - Stacey C. Schutte
- Department of Biomedical Engineering, University of Cincinnati, Cincinnati, OH 45221, USA; (J.A.W.); (M.K.); (L.E.); (S.C.S.)
| | - Greg M. Harris
- Department of Biomedical Engineering, University of Cincinnati, Cincinnati, OH 45221, USA; (J.A.W.); (M.K.); (L.E.); (S.C.S.)
- Department of Chemical and Environmental Engineering, University of Cincinnati, Cincinnati, OH 45221, USA;
- Neuroscience Graduate Program, University of Cincinnati College of Medicine, Cincinnati, OH 45221, USA
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19
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Zhao Q, Wang J, Qu S, Gong Z, Duan Y, Han L, Wang J, Wang C, Tan J, Yuan Q, Zhang Y. Neuro-Inspired Biomimetic Microreactor for Sensory Recovery and Hair Follicle Neogenesis under Skin Burns. ACS NANO 2023; 17:23115-23131. [PMID: 37934769 DOI: 10.1021/acsnano.3c09107] [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: 11/09/2023]
Abstract
Deep burns are one of the most severe skin wounds, with typical symptoms being a contradiction between initial severe pain and a subsequent loss of sensation. Although it has long been known that sensory nerves promote skin regeneration and modulate skin function, no proven burn management strategies target sensory nerves. Here, a neuro-inspired biomimetic microreactor is designed based on the immune escape outer membrane of neuroblastoma cells and neural-associated intracellular proteins. The microreactor is constructed on a metal-organic framework (MOF) with a neuroblastoma membrane coating the surface and intracellular proteins loaded inside, called Neuro-MOF. It is loaded into a therapeutic hydrogel and triggers the release of its content proteins upon excitation by near-infrared light. The proteins compensate the skin microenvironment for permanent neurological damage after burns to initiate peripheral nerve regeneration and hair follicle niche formation. In addition, the neuroblastoma cell membrane is displayed on the surface of the Neuro-MOF microreactor, decreasing its immunogenicity and suppressing local inflammation. In a mouse model of deep skin burns, the Neuro-MOF microreactor exhibited significant functional skin regeneration effects, particularly sensory recovery and hair follicle neogenesis.
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Affiliation(s)
- Qin Zhao
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Taikang Center for Life and Medical Sciences, Wuhan University, Wuhan 430079, China
- Frontier Science Center for Immunology and Metabolism, Medical Research Institute, School of Medicine, Wuhan University, Wuhan 430071, China
| | - Jinyang Wang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Taikang Center for Life and Medical Sciences, Wuhan University, Wuhan 430079, China
- Frontier Science Center for Immunology and Metabolism, Medical Research Institute, School of Medicine, Wuhan University, Wuhan 430071, China
| | - Shuyuan Qu
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Taikang Center for Life and Medical Sciences, Wuhan University, Wuhan 430079, China
- Frontier Science Center for Immunology and Metabolism, Medical Research Institute, School of Medicine, Wuhan University, Wuhan 430071, China
| | - Zijian Gong
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Taikang Center for Life and Medical Sciences, Wuhan University, Wuhan 430079, China
- Frontier Science Center for Immunology and Metabolism, Medical Research Institute, School of Medicine, Wuhan University, Wuhan 430071, China
| | - Yiling Duan
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Taikang Center for Life and Medical Sciences, Wuhan University, Wuhan 430079, China
- Frontier Science Center for Immunology and Metabolism, Medical Research Institute, School of Medicine, Wuhan University, Wuhan 430071, China
| | - Litian Han
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Taikang Center for Life and Medical Sciences, Wuhan University, Wuhan 430079, China
- Frontier Science Center for Immunology and Metabolism, Medical Research Institute, School of Medicine, Wuhan University, Wuhan 430071, China
| | - Jiaolong Wang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Taikang Center for Life and Medical Sciences, Wuhan University, Wuhan 430079, China
- Frontier Science Center for Immunology and Metabolism, Medical Research Institute, School of Medicine, Wuhan University, Wuhan 430071, China
| | - Can Wang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Taikang Center for Life and Medical Sciences, Wuhan University, Wuhan 430079, China
- Frontier Science Center for Immunology and Metabolism, Medical Research Institute, School of Medicine, Wuhan University, Wuhan 430071, China
| | - Jie Tan
- Institute of Chemical Biology and Nanomedicine, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Quan Yuan
- Institute of Chemical Biology and Nanomedicine, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Yufeng Zhang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Taikang Center for Life and Medical Sciences, Wuhan University, Wuhan 430079, China
- Frontier Science Center for Immunology and Metabolism, Medical Research Institute, School of Medicine, Wuhan University, Wuhan 430071, China
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20
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Footner E, Firipis K, Liu E, Baker C, Foley P, Kapsa RMI, Pirogova E, O'Connell C, Quigley A. Layer-by-Layer Analysis of In Vitro Skin Models. ACS Biomater Sci Eng 2023; 9:5933-5952. [PMID: 37791888 DOI: 10.1021/acsbiomaterials.3c00283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/05/2023]
Abstract
In vitro human skin models are evolving into versatile platforms for the study of skin biology and disorders. These models have many potential applications in the fields of drug testing and safety assessment, as well as cosmetic and new treatment development. The development of in vitro skin models that accurately mimic native human skin can reduce reliance on animal models and also allow for more precise, clinically relevant testing. Recent advances in biofabrication techniques and biomaterials have led to the creation of increasingly complex, multilayered skin models that incorporate important functional components of skin, such as the skin barrier, mechanical properties, pigmentation, vasculature, hair follicles, glands, and subcutaneous layer. This improved ability to recapitulate the functional aspects of native skin enhances the ability to model the behavior and response of native human skin, as the complex interplay of cell-to-cell and cell-to-material interactions are incorporated. In this review, we summarize the recent developments in in vitro skin models, with a focus on their applications, limitations, and future directions.
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Affiliation(s)
- Elizabeth Footner
- Electrical and Biomedical Engineering, School of Engineering, RMIT University, Melbourne, VIC 3000, Australia
- Aikenhead Centre for Medical Discovery, St Vincent's Hospital Melbourne, Fitzroy, VIC 3065, Australia
| | - Kate Firipis
- Electrical and Biomedical Engineering, School of Engineering, RMIT University, Melbourne, VIC 3000, Australia
- Aikenhead Centre for Medical Discovery, St Vincent's Hospital Melbourne, Fitzroy, VIC 3065, Australia
| | - Emily Liu
- Electrical and Biomedical Engineering, School of Engineering, RMIT University, Melbourne, VIC 3000, Australia
- Aikenhead Centre for Medical Discovery, St Vincent's Hospital Melbourne, Fitzroy, VIC 3065, Australia
| | - Chris Baker
- Department of Dermatology, St Vincent's Hospital Melbourne, Fitzroy, VIC 3065, Australia
- Skin Health Institute, Carlton, VIC 3053, Australia
- Department of Medicine, University of Melbourne, St Vincent's Hospital Melbourne, Fitzroy, VIC 3065, Australia
| | - Peter Foley
- Department of Dermatology, St Vincent's Hospital Melbourne, Fitzroy, VIC 3065, Australia
- Skin Health Institute, Carlton, VIC 3053, Australia
- Department of Medicine, University of Melbourne, St Vincent's Hospital Melbourne, Fitzroy, VIC 3065, Australia
| | - Robert M I Kapsa
- Electrical and Biomedical Engineering, School of Engineering, RMIT University, Melbourne, VIC 3000, Australia
- Aikenhead Centre for Medical Discovery, St Vincent's Hospital Melbourne, Fitzroy, VIC 3065, Australia
- Department of Medicine, University of Melbourne, St Vincent's Hospital Melbourne, Fitzroy, VIC 3065, Australia
- Centre for Clinical Neurosciences and Neurological Research, St. Vincent's Hospital Melbourne, Fitzroy, VIC 3065, Australia
| | - Elena Pirogova
- Electrical and Biomedical Engineering, School of Engineering, RMIT University, Melbourne, VIC 3000, Australia
- Aikenhead Centre for Medical Discovery, St Vincent's Hospital Melbourne, Fitzroy, VIC 3065, Australia
| | - Cathal O'Connell
- Electrical and Biomedical Engineering, School of Engineering, RMIT University, Melbourne, VIC 3000, Australia
- Aikenhead Centre for Medical Discovery, St Vincent's Hospital Melbourne, Fitzroy, VIC 3065, Australia
| | - Anita Quigley
- Electrical and Biomedical Engineering, School of Engineering, RMIT University, Melbourne, VIC 3000, Australia
- Aikenhead Centre for Medical Discovery, St Vincent's Hospital Melbourne, Fitzroy, VIC 3065, Australia
- Department of Medicine, University of Melbourne, St Vincent's Hospital Melbourne, Fitzroy, VIC 3065, Australia
- Centre for Clinical Neurosciences and Neurological Research, St. Vincent's Hospital Melbourne, Fitzroy, VIC 3065, Australia
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21
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Sharifi E, Yousefiasl S, Laderian N, Rabiee N, Makvandi P, Pourmotabed S, Ashrafizadeh M, Familsattarian F, Fang W. Cell-loaded genipin cross-linked collagen/gelatin skin substitute adorned with zinc-doped bioactive glass-ceramic for cutaneous wound regeneration. Int J Biol Macromol 2023; 251:125898. [PMID: 37479201 DOI: 10.1016/j.ijbiomac.2023.125898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 07/12/2023] [Accepted: 07/18/2023] [Indexed: 07/23/2023]
Abstract
An optimal tissue-engineered dermal substitute should possess biocompatibility and cell adhesion conduction to facilitate fibroblast and keratinocyte infiltration and proliferation, as well as angiogenesis potential to escalate wound healing. Zinc was doped to bioactive glass-ceramic (Zn-BGC) to promote biocompatibility and angiogenesis properties. Zn-BGC was then incorporated into a collagen (Col) and gelatin (Gel) porous scaffold. The bioactive porous bionanocomposite exhibited biocompatibility along with improved cell attachment and proliferation. Scaffolds including Col-Gel/Zn-BGC with or without mouse embryonic fibroblasts were applied on full-thickness skin wounds on the BALB/c mice to assess their wound healing potential in vivo. The results indicated that the biodegradation rate of the Col-Gel/Zn-BGC nanocomposites was comparable to the rate of skin tissue regeneration in vivo. Macroscopic wound healing results showed that Col-Gel/Zn-BGC loaded with mouse embryonic fibroblast possesses the smallest wound size, indicating the fastest healing process. Histopathological evaluations displayed that the optimal wound regeneration was observed in Col-Gel/Zn-BGC nanocomposites loaded with mouse embryonic fibroblasts indicated by epithelialization and angiogenesis; besides the number of fibroblasts and hair follicles was increased. The bioactive nanocomposite scaffold of Col-Gel containing Zn-BGC nanoparticles loaded with mouse embryonic fibroblasts can be employed as a desirable skin substitute to ameliorate cutaneous wound regeneration.
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Affiliation(s)
- Esmaeel Sharifi
- Cellular and Molecular Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Science, 8815713471 Shahrekord, Iran; Cancer Research Center, Hamadan University of Medical Sciences, Hamadan, Iran.
| | - Satar Yousefiasl
- Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran 1417614411, Iran.
| | - Nilofar Laderian
- School of Medicine, Shahrekord University of Medical Science, 8815713471 Shahrekord, Iran
| | - Navid Rabiee
- School of Engineering, Macquarie University, Sydney, New South Wales 2109, Australia
| | - Pooyan Makvandi
- School of Engineering, Institute for Bioengineering, The University of Edinburgh, Edinburgh EH9 3JL, UK
| | - Samiramis Pourmotabed
- Department of Emergency Medicine, School of Medicine, Hamadan University of Medical Sciences, 6517838736 Hamadan, Iran
| | - Milad Ashrafizadeh
- Department of General Surgery and Integrated Chinese and Western Medicine, Institute of Precision Diagnosis and Treatment of Gastrointestinal Tumors, Carson International Cancer Center, Shenzhen University General Hospital, Shenzhen University, Shenzhen, Guangdong 518060, China; Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Fatemeh Familsattarian
- Department of Materials Engineering, Bu-Ali Sina University, P.O.B: 65178-38695, Hamedan, Iran
| | - Wei Fang
- Department of Laser and Aesthetic Medicine, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China.
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22
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Mehta AS, Teymoori S, Recendez C, Fregoso D, Gallegos A, Yang HY, Aslankoohi E, Rolandi M, Isseroff RR, Zhao M, Gomez M. Quantifying innervation facilitated by deep learning in wound healing. Sci Rep 2023; 13:16885. [PMID: 37803028 PMCID: PMC10558471 DOI: 10.1038/s41598-023-42743-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Accepted: 09/14/2023] [Indexed: 10/08/2023] Open
Abstract
The peripheral nerves (PNs) innervate the dermis and epidermis, and are suggested to play an important role in wound healing. Several methods to quantify skin innervation during wound healing have been reported. Those usually require multiple observers, are complex and labor-intensive, and the noise/background associated with the immunohistochemistry (IHC) images could cause quantification errors/user bias. In this study, we employed the state-of-the-art deep neural network, Denoising Convolutional Neural Network (DnCNN), to perform pre-processing and effectively reduce the noise in the IHC images. Additionally, we utilized an automated image analysis tool, assisted by Matlab, to accurately determine the extent of skin innervation during various stages of wound healing. The 8 mm wound is generated using a circular biopsy punch in the wild-type mouse. Skin samples were collected on days 3, 7, 10 and 15, and sections from paraffin-embedded tissues were stained against pan-neuronal marker- protein-gene-product 9.5 (PGP 9.5) antibody. On day 3 and day 7, negligible nerve fibers were present throughout the wound with few only on the lateral boundaries of the wound. On day 10, a slight increase in nerve fiber density appeared, which significantly increased on day 15. Importantly, we found a positive correlation (R2 = 0.926) between nerve fiber density and re-epithelization, suggesting an association between re-innervation and re-epithelization. These results established a quantitative time course of re-innervation in wound healing, and the automated image analysis method offers a novel and useful tool to facilitate the quantification of innervation in the skin and other tissues.
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Affiliation(s)
- Abijeet Singh Mehta
- Department of Dermatology, University of California, Davis, CA, 95616, USA.
- Department of Ophthalmology, University of California, Davis, CA, 95616, USA.
| | - Sam Teymoori
- Department of Applied Mathematics, University of California, Santa Cruz, CA, 95064, USA
| | - Cynthia Recendez
- Department of Dermatology, University of California, Davis, CA, 95616, USA
- Department of Ophthalmology, University of California, Davis, CA, 95616, USA
| | - Daniel Fregoso
- Department of Dermatology, University of California, Davis, CA, 95616, USA
| | - Anthony Gallegos
- Department of Dermatology, University of California, Davis, CA, 95616, USA
| | - Hsin-Ya Yang
- Department of Dermatology, University of California, Davis, CA, 95616, USA
| | - Elham Aslankoohi
- Department of Electrical and Computer Engineering, University of California, Santa Cruz, CA, 95064, USA
| | - Marco Rolandi
- Department of Electrical and Computer Engineering, University of California, Santa Cruz, CA, 95064, USA
| | | | - Min Zhao
- Department of Dermatology, University of California, Davis, CA, 95616, USA.
- Department of Ophthalmology, University of California, Davis, CA, 95616, USA.
| | - Marcella Gomez
- Department of Applied Mathematics, University of California, Santa Cruz, CA, 95064, USA.
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23
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Rong H, Dong Y, Zhao J, Zhang X, Li S, Sun Y, Lu T, Yu S, Hu H. Fetal milieu-simulating hyaluronic acid-dopamine-chondroitin sulfate hydrogel promoting angiogenesis and hair regeneration for wound healing. Int J Biol Macromol 2023; 248:125739. [PMID: 37423445 DOI: 10.1016/j.ijbiomac.2023.125739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 06/29/2023] [Accepted: 07/06/2023] [Indexed: 07/11/2023]
Abstract
Wound regeneration with complete functions and skin appendages is still challenging in wound dressing application. Inspired by the efficient wound healing in the fetal environment, we developed a fetal milieu-mimicking hydrogel for accelerating wound healing simultaneously with hair follicle regeneration. To mimic the fetal extracellular matrix (ECM), which contains high content of glycosaminoglycans, hyaluronic acid (HA) and chondroitin sulfate (CS) were selected to fabricate hydrogels. Meanwhile, dopamine (DA) modification endowed hydrogels with satisfactory mechanical properties and multi-functions. The hydrogel encapsulated atorvastatin (ATV) and zinc citrate (ZnCit), namely HA-DA-CS/Zn-ATV, exhibited tissue adhesion, self-healing capacity, good biocompatibility, excellent anti-oxidant ability, high exudate absorption, and hemostasis property. In vitro results revealed that hydrogels exerted significant angiogenesis and hair follicle regeneration efficacy. In vivo results confirmed that hydrogels significantly promoted wound healing, and the closure ratio reached over 94 % after 14 days of hydrogels-treatment. The regenerated skin exhibited a complete epidermis, dense and ordered collagen. Furthermore, the number of neovessels and hair follicles in the HA-DA-CS/Zn-ATV group were 1.57- and 3.05-fold higher than those of the HA-DA-CS group. Thus, HA-DA-CS/Zn-ATV serves as multifunctional hydrogels for simulating the fetal milieu and achieving efficient skin reconstruction with hair follicle regrowth, exhibiting potential in clinical wound healing.
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Affiliation(s)
- Hehui Rong
- School of Pharmaceutical Science, Sun Yat-sen University, Guangzhou 510006, China
| | - Yating Dong
- School of Pharmaceutical Science, Sun Yat-sen University, Guangzhou 510006, China
| | - Junke Zhao
- School of Pharmaceutical Science, Sun Yat-sen University, Guangzhou 510006, China
| | - Xuefei Zhang
- School of Pharmaceutical Science, Sun Yat-sen University, Guangzhou 510006, China; School of Traditional Dai-Thai Medicine, West Yunnan University of Applied Sciences, Jinghong 666100, China
| | - Shuxuan Li
- School of Pharmaceutical Science, Sun Yat-sen University, Guangzhou 510006, China
| | - Yingying Sun
- School of Pharmaceutical Science, Sun Yat-sen University, Guangzhou 510006, China
| | - Tianli Lu
- School of Pharmaceutical Science, Sun Yat-sen University, Guangzhou 510006, China
| | - Shihui Yu
- School of Pharmaceutical Science, Sun Yat-sen University, Guangzhou 510006, China.
| | - Haiyan Hu
- School of Pharmaceutical Science, Sun Yat-sen University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Chiral Molecules and Drug Discovery, Sun Yat-sen University, Guangzhou 510006, China.
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24
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Vecchi JT, Mullan S, Lopez JA, Rhomberg M, Yamamoto A, Hallam A, Lee A, Sonka M, Hansen MR. Sensitivity of CNN image analysis to multifaceted measurements of neurite growth. BMC Bioinformatics 2023; 24:320. [PMID: 37620759 PMCID: PMC10464248 DOI: 10.1186/s12859-023-05444-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Accepted: 08/11/2023] [Indexed: 08/26/2023] Open
Abstract
Quantitative analysis of neurite growth and morphology is essential for understanding the determinants of neural development and regeneration, however, it is complicated by the labor-intensive process of measuring diverse parameters of neurite outgrowth. Consequently, automated approaches have been developed to study neurite morphology in a high-throughput and comprehensive manner. These approaches include computer-automated algorithms known as 'convolutional neural networks' (CNNs)-powerful models capable of learning complex tasks without the biases of hand-crafted models. Nevertheless, their complexity often relegates them to functioning as 'black boxes.' Therefore, research in the field of explainable AI is imperative to comprehend the relationship between CNN image analysis output and predefined morphological parameters of neurite growth in order to assess the applicability of these machine learning approaches. In this study, drawing inspiration from the field of automated feature selection, we investigate the correlation between quantified metrics of neurite morphology and the image analysis results from NeuriteNet-a CNN developed to analyze neurite growth. NeuriteNet accurately distinguishes images of neurite growth based on different treatment groups within two separate experimental systems. These systems differentiate between neurons cultured on different substrate conditions and neurons subjected to drug treatment inhibiting neurite outgrowth. By examining the model's function and patterns of activation underlying its classification decisions, we discover that NeuriteNet focuses on aspects of neuron morphology that represent quantifiable metrics distinguishing these groups. Additionally, it incorporates factors that are not encompassed by neuron morphology tracing analyses. NeuriteNet presents a novel tool ideally suited for screening morphological differences in heterogeneous neuron groups while also providing impetus for targeted follow-up studies.
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Affiliation(s)
- Joseph T Vecchi
- Department of Molecular Physiology and Biophysics, Carver College of Medicine, University of Iowa, Iowa City, IA, USA
- Department of Otolaryngology Head-Neck Surgery, Carver College of Medicine, University of Iowa, Iowa City, IA, USA
| | - Sean Mullan
- Iowa Institute for Biomedical Imaging, Electrical and Computer Engineering, University of Iowa, Iowa City, IA, USA
| | - Josue A Lopez
- Department of Neuroscience, University of Texas-Austin, Austin, TX, USA
| | - Madeline Rhomberg
- Department of Otolaryngology Head-Neck Surgery, Carver College of Medicine, University of Iowa, Iowa City, IA, USA
| | | | - Annabelle Hallam
- Department of Otolaryngology Head-Neck Surgery, Carver College of Medicine, University of Iowa, Iowa City, IA, USA
| | - Amy Lee
- Department of Neuroscience, University of Texas-Austin, Austin, TX, USA
| | - Milan Sonka
- Iowa Institute for Biomedical Imaging, Electrical and Computer Engineering, University of Iowa, Iowa City, IA, USA
| | - Marlan R Hansen
- Department of Molecular Physiology and Biophysics, Carver College of Medicine, University of Iowa, Iowa City, IA, USA.
- Department of Otolaryngology Head-Neck Surgery, Carver College of Medicine, University of Iowa, Iowa City, IA, USA.
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25
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Wang JJ, Yu YY, Wang PY, Huang XM, Chen X, Chen XG. Sequential treatment for diabetic foot ulcers in dialysis patients: A case report. World J Diabetes 2023; 14:1323-1329. [PMID: 37664469 PMCID: PMC10473955 DOI: 10.4239/wjd.v14.i8.1323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 05/16/2023] [Accepted: 07/14/2023] [Indexed: 08/11/2023] Open
Abstract
BACKGROUND Diabetic foot ulcers (DFUs) are common in patients with diabetes, especially those undergoing hemodialysis. In severe cases, these ulcers can cause damage to the lower extremities and lead to amputation. Traditional treatments such as flap transposition and transfemoral amputation are not always applicable in all cases. Therefore, there is a need for alternative treatment methods. CASE SUMMARY This report describes a 62-year-old female patient who was admitted to the hospital with plantar and heel ulcers on her left foot. The patient had a history of renal failure and was undergoing regular hemodialysis. Digital subtraction angiography showed extensive stenosis and occlusion in the left superficial femoral artery, left peroneal artery and left posterior tibial artery. Following evaluation by a multidisciplinary team, the patient was diagnosed with type 2 DFUs (TEXAS 4D). Traditional treatments were deemed unsuitable, and the patient was treated with endovascular surgery in the affected area, in addition to supportive medical treatment, local debridement, and sequential repair using split-thickness skin and tissue-engineered skin grafts combined with negative pressure treatment. After four months, the wound had completely healed, and the patient was able to walk with a walking aid. CONCLUSION This study demonstrates a new treatment method for DFUs was successful, using angioplasty, skin grafts, and negative pressure.
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Affiliation(s)
- Jin-Jun Wang
- College of Marine Life Science, Ocean University of China, Qingdao 266003, Shandong Province, China
- Department of Vascular Surgery, Qingdao Haici Hospital Affiliated to Qingdao University, Qingdao 266033, Shandong Province, China
| | - Yuan-Yuan Yu
- Department of Vascular Surgery, Qingdao Haici Hospital Affiliated to Qingdao University, Qingdao 266033, Shandong Province, China
| | - Pin-Yi Wang
- Department of Vascular Surgery, Qingdao Haici Hospital Affiliated to Qingdao University, Qingdao 266033, Shandong Province, China
| | - Xian-Ming Huang
- Department of Vascular Surgery, Qingdao Haici Hospital Affiliated to Qingdao University, Qingdao 266033, Shandong Province, China
| | - Xiao Chen
- Department of Vascular Surgery, Qingdao Haici Hospital Affiliated to Qingdao University, Qingdao 266033, Shandong Province, China
| | - Xi-Guang Chen
- College of Marine Life Science, Ocean University of China, Qingdao 266003, Shandong Province, China
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26
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Mehta AS, Teymoori S, Recendez C, Fregoso D, Gallegos A, Yang HY, Isseroff R, Zhao M, Gomez M, Aslankoohi E, Rolandi M. Quantifying innervation facilitated by deep learning in wound healing. RESEARCH SQUARE 2023:rs.3.rs-3088471. [PMID: 37461461 PMCID: PMC10350234 DOI: 10.21203/rs.3.rs-3088471/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/24/2023]
Abstract
The peripheral nerves (PNs) innervate the dermis and epidermis, which have been suggested to play an important role in wound healing. Several methods to quantify skin innervation during wound healing have been reported. Those usually require multiple observers, are complex and labor-intensive, and noise/background associated with the Immunohistochemistry (IHC) images could cause quantification errors/user bias. In this study, we employed the state-of-the-art deep neural network, DnCNN, to perform pre-processing and effectively reduce the noise in the IHC images. Additionally, we utilized an automated image analysis tool, assisted by Matlab, to accurately determine the extent of skin innervation during various stages of wound healing. The 8mm wound is generated using a circular biopsy punch in the wild-type mouse. Skin samples were collected on days 3,7,10 and 15, and sections from paraffin-embedded tissues were stained against pan-neuronal marker- protein-gene-product 9.5 (PGP 9.5) antibody. On day 3 and day 7, negligible nerve fibers were present throughout the wound with few only on the lateral boundaries of the wound. On day 10, a slight increase in nerve fiber density appeared, which significantly increased on day 15. Importantly we found a positive correlation (R 2 = 0.933) between nerve fiber density and re-epithelization, suggesting an association between re-innervation and re-epithelization. These results established a quantitative time course of re-innervation in wound healing, and the automated image analysis method offers a novel and useful tool to facilitate the quantification of innervation in the skin and other tissues.
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27
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Mehta AS, Teymoori S, Recendez C, Fregoso D, Gallegos A, Yang HY, Isseroff RR, Zhao M, Gomez M. Quantifying innervation facilitated by deep learning in wound healing. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.06.14.544960. [PMID: 37398108 PMCID: PMC10312705 DOI: 10.1101/2023.06.14.544960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/04/2023]
Abstract
The peripheral nerves (PNs) innervate the dermis and epidermis, which have been suggested to play an important role in wound healing. Several methods to quantify skin innervation during wound healing have been reported. Those usually require multiple observers, are complex and labor-intensive, and noise/background associated with the Immunohistochemistry (IHC) images could cause quantification errors/user bias. In this study, we employed the state-of-the-art deep neural network, DnCNN, to perform pre-processing and effectively reduce the noise in the IHC images. Additionally, we utilized an automated image analysis tool, assisted by Matlab, to accurately determine the extent of skin innervation during various stages of wound healing. The 8mm wound is generated using a circular biopsy punch in the wild-type mouse. Skin samples were collected on days 3,7,10 and 15, and sections from paraffin-embedded tissues were stained against pan-neuronal marker- protein-gene-product 9.5 (PGP 9.5) antibody. On day 3 and day 7, negligible nerve fibers were present throughout the wound with few only on the lateral boundaries of the wound. On day 10, a slight increase in nerve fiber density appeared, which significantly increased on day 15. Importantly we found a positive correlation (R- 2 = 0.933) between nerve fiber density and re-epithelization, suggesting an association between re-innervation and re-epithelization. These results established a quantitative time course of re-innervation in wound healing, and the automated image analysis method offers a novel and useful tool to facilitate the quantification of innervation in the skin and other tissues.
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Hofmann E, Schwarz A, Fink J, Kamolz LP, Kotzbeck P. Modelling the Complexity of Human Skin In Vitro. Biomedicines 2023; 11:biomedicines11030794. [PMID: 36979772 PMCID: PMC10045055 DOI: 10.3390/biomedicines11030794] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 02/17/2023] [Accepted: 02/19/2023] [Indexed: 03/08/2023] Open
Abstract
The skin serves as an important barrier protecting the body from physical, chemical and pathogenic hazards as well as regulating the bi-directional transport of water, ions and nutrients. In order to improve the knowledge on skin structure and function as well as on skin diseases, animal experiments are often employed, but anatomical as well as physiological interspecies differences may result in poor translatability of animal-based data to the clinical situation. In vitro models, such as human reconstructed epidermis or full skin equivalents, are valuable alternatives to animal experiments. Enormous advances have been achieved in establishing skin models of increasing complexity in the past. In this review, human skin structures are described as well as the fast evolving technologies developed to reconstruct the complexity of human skin structures in vitro.
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Affiliation(s)
- Elisabeth Hofmann
- COREMED—Centre of Regenerative and Precision Medicine, JOANNEUM RESEARCH Forschungsgesellschaft, 8010 Graz, Austria
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, 8036 Graz, Austria
- Research Unit for Tissue Regeneration, Repair and Reconstruction, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, 8036 Graz, Austria
| | - Anna Schwarz
- COREMED—Centre of Regenerative and Precision Medicine, JOANNEUM RESEARCH Forschungsgesellschaft, 8010 Graz, Austria
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, 8036 Graz, Austria
- Research Unit for Tissue Regeneration, Repair and Reconstruction, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, 8036 Graz, Austria
| | - Julia Fink
- COREMED—Centre of Regenerative and Precision Medicine, JOANNEUM RESEARCH Forschungsgesellschaft, 8010 Graz, Austria
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, 8036 Graz, Austria
- Research Unit for Tissue Regeneration, Repair and Reconstruction, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, 8036 Graz, Austria
| | - Lars-Peter Kamolz
- COREMED—Centre of Regenerative and Precision Medicine, JOANNEUM RESEARCH Forschungsgesellschaft, 8010 Graz, Austria
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, 8036 Graz, Austria
| | - Petra Kotzbeck
- COREMED—Centre of Regenerative and Precision Medicine, JOANNEUM RESEARCH Forschungsgesellschaft, 8010 Graz, Austria
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, 8036 Graz, Austria
- Research Unit for Tissue Regeneration, Repair and Reconstruction, Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, 8036 Graz, Austria
- Correspondence:
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Guillot AJ, Martínez-Navarrete M, Garrigues TM, Melero A. Skin drug delivery using lipid vesicles: A starting guideline for their development. J Control Release 2023; 355:624-654. [PMID: 36775245 DOI: 10.1016/j.jconrel.2023.02.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 02/02/2023] [Accepted: 02/02/2023] [Indexed: 02/14/2023]
Abstract
Lipid vesicles can provide a cost-effective enhancement of skin drug absorption when vesicle production process is optimised. It is an important challenge to design the ideal vesicle, since their properties and features are related, as changes in one affect the others. Here, we review the main components, preparation and characterization methods commonly used, and the key properties that lead to highly efficient vesicles for transdermal drug delivery purposes. We stand by size, deformability degree and drug loading, as the most important vesicle features that determine the further transdermal drug absorption. The interest in this technology is increasing, as demonstrated by the exponential growth of publications on the topic. Although long-term preservation and scalability issues have limited the commercialization of lipid vesicle products, freeze-drying and modern escalation methods overcome these difficulties, thus predicting a higher use of these technologies in the market and clinical practice.
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Affiliation(s)
- Antonio José Guillot
- Department of Pharmacy and Pharmaceutical Technology and Parasitology, University of Valencia, Avda. Vicente A. Estelles SN, Burjassot (Valencia), Spain
| | - Miquel Martínez-Navarrete
- Department of Pharmacy and Pharmaceutical Technology and Parasitology, University of Valencia, Avda. Vicente A. Estelles SN, Burjassot (Valencia), Spain
| | - Teresa M Garrigues
- Department of Pharmacy and Pharmaceutical Technology and Parasitology, University of Valencia, Avda. Vicente A. Estelles SN, Burjassot (Valencia), Spain
| | - Ana Melero
- Department of Pharmacy and Pharmaceutical Technology and Parasitology, University of Valencia, Avda. Vicente A. Estelles SN, Burjassot (Valencia), Spain.
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30
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Fascia Layer-A Novel Target for the Application of Biomaterials in Skin Wound Healing. Int J Mol Sci 2023; 24:ijms24032936. [PMID: 36769257 PMCID: PMC9917695 DOI: 10.3390/ijms24032936] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 01/28/2023] [Accepted: 01/31/2023] [Indexed: 02/05/2023] Open
Abstract
As the first barrier of the human body, the skin has been of great concern for its wound healing and regeneration. The healing of large, refractory wounds is difficult to be repaired by cell proliferation at the wound edges and usually requires manual intervention for treatment. Therefore, therapeutic tools such as stem cells, biomaterials, and cytokines have been applied to the treatment of skin wounds. Skin microenvironment modulation is a key technology to promote wound repair and skin regeneration. In recent years, a series of novel bioactive materials that modulate the microenvironment and cell behavior have been developed, showing the ability to efficiently facilitate wound repair and skin attachment regeneration. Meanwhile, our lab found that the fascial layer has an indispensable role in wound healing and repair, and this review summarizes the research progress of related bioactive materials and their role in wound healing.
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31
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Ghatak S, Khanna S, Roy S, Thirunavukkarasu M, Pradeep SR, Wulff BC, El Masry MS, Sharma A, Palakurti R, Ghosh N, Xuan Y, Wilgus TA, Maulik N, Yoder MC, Sen CK. Driving adult tissue repair via re-engagement of a pathway required for fetal healing. Mol Ther 2023; 31:454-470. [PMID: 36114673 PMCID: PMC9931555 DOI: 10.1016/j.ymthe.2022.09.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 08/16/2022] [Accepted: 09/06/2022] [Indexed: 02/07/2023] Open
Abstract
Fetal cutaneous wound closure and repair differ from that in adulthood. In this work, we identify an oxidant stress sensor protein, nonselenocysteine-containing phospholipid hydroperoxide glutathione peroxidase (NPGPx), that is abundantly expressed in normal fetal epidermis (and required for fetal wound closure), though not in adult epidermis, but is variably re-induced upon adult tissue wounding. NPGPx is a direct target of the miR-29 family. Following injury, abundance of miR-29 is lowered, permitting a prompt increase in NPGPx transcripts and protein expression in adult wound-edge tissue. NPGPx expression was required to mediate increased keratinocyte migration induced by miR-29 inhibition in vitro and in vivo. Increased NPGPx expression induced increased SOX2 expression and β-catenin nuclear localization in keratinocytes. Augmenting physiologic NPGPx expression via experimentally induced miR-29 suppression, using cutaneous tissue nanotransfection or targeted lipid nanoparticle delivery of anti-sense oligonucleotides, proved to be sufficient to overcome the deleterious effects of diabetes on this specific pathway to enhance tissue repair.
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Affiliation(s)
- Subhadip Ghatak
- Indiana Center for Regenerative Medicine & Engineering, Indiana University Health Comprehensive Wound Center, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Savita Khanna
- Indiana Center for Regenerative Medicine & Engineering, Indiana University Health Comprehensive Wound Center, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Sashwati Roy
- Indiana Center for Regenerative Medicine & Engineering, Indiana University Health Comprehensive Wound Center, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Mahesh Thirunavukkarasu
- Department of Surgery, Molecular Cardiology and Angiogenesis Laboratory, University of Connecticut Health, Farmington, CT 06030, USA
| | - Seetur R Pradeep
- Department of Surgery, Molecular Cardiology and Angiogenesis Laboratory, University of Connecticut Health, Farmington, CT 06030, USA
| | - Brian C Wulff
- Department of Pathology, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA
| | - Mohamed S El Masry
- Indiana Center for Regenerative Medicine & Engineering, Indiana University Health Comprehensive Wound Center, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN 46202, USA; Department of Plastic Surgery, Zagazig University, Zagazig 44519, Egypt
| | - Anu Sharma
- Indiana Center for Regenerative Medicine & Engineering, Indiana University Health Comprehensive Wound Center, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Ravichand Palakurti
- Indiana Center for Regenerative Medicine & Engineering, Indiana University Health Comprehensive Wound Center, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Nandini Ghosh
- Indiana Center for Regenerative Medicine & Engineering, Indiana University Health Comprehensive Wound Center, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Yi Xuan
- Indiana Center for Regenerative Medicine & Engineering, Indiana University Health Comprehensive Wound Center, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN 46202, USA; Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN 47907, USA
| | - Traci A Wilgus
- Department of Pathology, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA
| | - Nilanjana Maulik
- Department of Surgery, Molecular Cardiology and Angiogenesis Laboratory, University of Connecticut Health, Farmington, CT 06030, USA
| | - Mervin C Yoder
- Indiana Center for Regenerative Medicine & Engineering, Indiana University Health Comprehensive Wound Center, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Chandan K Sen
- Indiana Center for Regenerative Medicine & Engineering, Indiana University Health Comprehensive Wound Center, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN 46202, USA; Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN 47907, USA.
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Cheema U. Position Paper Progress in the development of biomimetic engineered human tissues. J Tissue Eng 2023; 14:20417314221145663. [PMID: 36874985 PMCID: PMC9974615 DOI: 10.1177/20417314221145663] [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: 06/21/2022] [Accepted: 11/28/2022] [Indexed: 03/07/2023] Open
Abstract
Tissue engineering (TE) is the multi-disciplinary approach to building 3D human tissue equivalents in the laboratory. The advancement of medical sciences and allied scientific disciplines have aspired to engineer human tissues for three decades. To date there is limited use of TE tissues/organs as replacement body parts in humans. This position paper outlines advances in engineering of specific tissues and organs with tissue-specific challenges. This paper outlines the technologies most successful for engineering tissues and key areas of advancement.
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Affiliation(s)
- Umber Cheema
- Division of Surgery and interventional science, UCL Centre for 3D models of Health and Disease, Fitzrovia
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33
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Zheng Y, Wu J, Zhu Y, Wu C. Inorganic-based biomaterials for rapid hemostasis and wound healing. Chem Sci 2022; 14:29-53. [PMID: 36605747 PMCID: PMC9769395 DOI: 10.1039/d2sc04962g] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 11/07/2022] [Indexed: 12/02/2022] Open
Abstract
The challenge for the treatment of severe traumas poses an urgent clinical need for the development of biomaterials to achieve rapid hemostasis and wound healing. In the past few decades, active inorganic components and their derived composites have become potential clinical products owing to their excellent performances in the process of hemorrhage control and tissue repair. In this review, we provide a current overview of the development of inorganic-based biomaterials used for hemostasis and wound healing. We highlight the methods and strategies for the design of inorganic-based biomaterials, including 3D printing, freeze-drying, electrospinning and vacuum filtration. Importantly, inorganic-based biomaterials for rapid hemostasis and wound healing are presented, and we divide them into several categories according to different chemistry and forms and further discuss their properties, therapeutic mechanisms and applications. Finally, the conclusions and future prospects are suggested for the development of novel inorganic-based biomaterials in the field of rapid hemostasis and wound healing.
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Affiliation(s)
- Yi Zheng
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences No. 1295 Dingxi Road Shanghai 200050 People's Republic of China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences No. 19(A) Yuquan Road Beijing 100049 People's Republic of China
| | - Jinfu Wu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences No. 1295 Dingxi Road Shanghai 200050 People's Republic of China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences No. 19(A) Yuquan Road Beijing 100049 People's Republic of China
| | - Yufang Zhu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences No. 1295 Dingxi Road Shanghai 200050 People's Republic of China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences No. 19(A) Yuquan Road Beijing 100049 People's Republic of China
| | - Chengtie Wu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences No. 1295 Dingxi Road Shanghai 200050 People's Republic of China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences No. 19(A) Yuquan Road Beijing 100049 People's Republic of China
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34
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Zhang M, Zhang C, Li Z, Fu X, Huang S. Advances in 3D skin bioprinting for wound healing and disease modeling. Regen Biomater 2022; 10:rbac105. [PMID: 36683757 PMCID: PMC9845530 DOI: 10.1093/rb/rbac105] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/23/2022] [Accepted: 12/09/2022] [Indexed: 12/24/2022] Open
Abstract
Even with many advances in design strategies over the past three decades, an enormous gap remains between existing tissue engineering skin and natural skin. Currently available in vitro skin models still cannot replicate the three-dimensionality and heterogeneity of the dermal microenvironment sufficiently to recapitulate many of the known characteristics of skin disorder or disease in vivo. Three-dimensional (3D) bioprinting enables precise control over multiple compositions, spatial distributions and architectural complexity, therefore offering hope for filling the gap of structure and function between natural and artificial skin. Our understanding of wound healing process and skin disease would thus be boosted by the development of in vitro models that could more completely capture the heterogeneous features of skin biology. Here, we provide an overview of recent advances in 3D skin bioprinting, as well as design concepts of cells and bioinks suitable for the bioprinting process. We focus on the applications of this technology for engineering physiological or pathological skin model, focusing more specifically on the function of skin appendages and vasculature. We conclude with current challenges and the technical perspective for further development of 3D skin bioprinting.
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Affiliation(s)
| | | | | | - Xiaobing Fu
- Research Center for Tissue Repair and Regeneration affiliated to the Medical Innovation Research Department, PLA General Hospital and PLA Medical College, 28 Fu Xing Road, Beijing 100853, China,School of Medicine, Nankai University, 94 Wei Jing Road, Tianjin 300071, China
| | - Sha Huang
- Correspondence address. Tel: +86-10-66867384, E-mail:
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35
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Hosseini M, Koehler KR, Shafiee A. Biofabrication of Human Skin with Its Appendages. Adv Healthc Mater 2022; 11:e2201626. [PMID: 36063498 DOI: 10.1002/adhm.202201626] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 08/30/2022] [Indexed: 01/28/2023]
Abstract
Much effort has been made to generate human skin organ in the laboratory. Yet, the current models are limited due to the lack of many critical biological and structural features of the skin. Importantly, these in vitro models lack appendages and fail to recapitulate the whole human skin construction. Thus, engineering a human skin with the capacity to generate all components, including appendages, is a major challenge. This review intends to provide an update on the recent efforts underway to regenerate appendage-bearing skin organs based on scaffold-free and scaffold-based bioengineering approaches. Although the mouse skin equivalents containing hair follicles, sebaceous glands, and sweat glands have been established in vitro, there has been limited success in humans. A combination of biofabricated matrices and cell aggregates, such as organoids, can pave the way for generating skin substitutes with human-like biological, structural, and physical features. Accordingly, the formation of human skin organoids and reconstruction of vascularized skin equipped with immune cells prompt calls for more scientific research. The generation of appendage-bearing skin substitutes can be applied in practice for wound healing, hair restoration, and scar treatment.
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Affiliation(s)
- Motaharesadat Hosseini
- School of Mechanical, Medical and Process Engineering, Faculty of Engineering, Queensland University of Technology, Brisbane, QLD, 4059, Australia.,ARC Industrial Transformation Training Centre for Multiscale 3D Imaging, Modelling and Manufacturing (M3D), Queensland University of Technology, Brisbane, QLD, 4059, Australia
| | - Karl R Koehler
- Department of Otolaryngology-Head and Neck Surgery, Harvard Medical School, Boston, MA, 02115, USA.,Department of Otolaryngology, Boston Children's Hospital, Boston, MA, 02115, USA
| | - Abbas Shafiee
- Herston Biofabrication Institute, Metro North Hospital and Health Service, Brisbane, QLD, 4029, Australia.,Royal Brisbane and Women's Hospital, Metro North Hospital and Health Service, Brisbane, QLD, 4029, Australia.,The University of Queensland Diamantina Institute, Translational Research Institute, The University of Queensland, Brisbane, QLD, 4102, Australia
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36
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Tan SH, Chua DAC, Tang JRJ, Bonnard C, Leavesley D, Liang K. Design of Hydrogel-based Scaffolds for in vitro Three-dimensional Human Skin Model Reconstruction. Acta Biomater 2022; 153:13-37. [DOI: 10.1016/j.actbio.2022.09.068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 09/01/2022] [Accepted: 09/26/2022] [Indexed: 11/01/2022]
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37
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Chen Z, Zhao J, Yan Y, Zhang L, Du L, Liu X, Cao M, Wang C, Tang Y, Li H. Differential distribution and genetic determination of eccrine sweat glands and hair follicles in the volar skin of C57BL/6 mice and SD rats. BMC Vet Res 2022; 18:316. [PMID: 35974330 PMCID: PMC9380334 DOI: 10.1186/s12917-022-03416-z] [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: 12/18/2021] [Accepted: 08/09/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Eccrine sweat glands (ESGs) and hair follicles (HFs) are the prominent skin appendages regulating human body temperature. C57BL/6 mice and Sprague-Dawley (SD) rats are the most commonly used model animals for studying ESGs and HFs. Previous studies have shown the distribution of ESGs and HFs in volar hindfeet of C57BL/6 mice, but there are few or no reports on the distribution of ESGs and HFs in volar forefeet of C57BL/6 mice and volar feet of SD rats. Here, we investigated the differential distribution and genetic determination of ESGs and HFs in the volar skin of C57BL/6 mice and SD rats through gross observation, iodine-starch sweat test, double staining with Nile Blue A and Oil Red O, hematoxylin and eosin (HE) staining, double immunofluorescence staining of LIM Homeobox 2 (LHX2)/Na+-K+-ATPase α1(NKA) or LHX2/Na+-K+-2Cl- cotransporter 1 (NKCC1), and qRT-PCR detection of ESG-related gene Engrailed 1 (En1) and HF-related gene LHX2. RESULTS The results showed ESGs but no HFs in the footpads of C57BL/6 mice and SD rats, both ESGs and HFs in the inter-footpads (IFPs) of C57BL/6 mice, and neither ESGs nor HFs in the IFPs of SD rats. The relative quantitative change in En1 was consistent with the differential distribution of ESGs, and the relative quantitative change of LHX2 was consistent with the differential distribution of HFs. CONCLUSION C57BL/6 mice and SD rats had their own characteristics in the distribution of ESGs and HFs in the volar skin, and researchers should choose mice or rats, and even forefeet or hindfeet as their research object according to different purposes. The study provides a basis for selection of optimal animal models to study development, wound healing and regeneration of skin appendages.
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Affiliation(s)
- Zixiu Chen
- Jinzhou Medical University Graduate Training Base, Department of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei Province, China
| | - Junhong Zhao
- Department of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei Province, China.,Hubei Clinical Medical Research Center of Cord Blood Hematopoietic Stem Cells, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei Province, China
| | - Yongjing Yan
- Jinzhou Medical University Graduate Training Base, Department of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei Province, China
| | - Lei Zhang
- Mental Health Center, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei Province, China
| | - Lijie Du
- Department of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei Province, China.,Hubei Clinical Medical Research Center of Cord Blood Hematopoietic Stem Cells, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei Province, China
| | - Xiang Liu
- Department of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei Province, China
| | - Manxiu Cao
- Jinzhou Medical University Graduate Training Base, Department of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei Province, China
| | - Cangyu Wang
- Department of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei Province, China
| | - Yue Tang
- Department of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei Province, China
| | - Haihong Li
- Jinzhou Medical University Graduate Training Base, Department of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei Province, China. .,Department of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei Province, China. .,Hubei Clinical Medical Research Center of Cord Blood Hematopoietic Stem Cells, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei Province, China. .,Department of Wound Repair; Institute of Wound Repair and Regeneration Medicine, Southern University of Science and Technology Hospital, Southern University of Science and Technology School of Medicine, Shenzhen, China.
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Ramakrishnan R, Chouhan D, Vijayakumar Sreelatha H, Arumugam S, Mandal BB, Krishnan LK. Silk Fibroin-Based Bioengineered Scaffold for Enabling Hemostasis and Skin Regeneration of Critical-Size Full-Thickness Heat-Induced Burn Wounds. ACS Biomater Sci Eng 2022; 8:3856-3870. [PMID: 35969223 DOI: 10.1021/acsbiomaterials.2c00328] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Millions of people around the globe are affected by full-thickness skin injuries. A delay in the healing of such injuries can lead to the formation of chronic wounds, posing several clinical and economic challenges. Current strategies for wound care aim for skin regeneration and not merely skin repair or faster wound closure. The present study aimed to develop a bioactive wound-healing matrix comprising natural biomaterial silk fibroin (SF), clinical-grade human fibrin (FIB), and human hyaluronic acid (HA), resulting in SFFIBHA for regeneration of full-thickness burn wounds. A porous, hemostatic, self-adhesive, moisture-retentive, and biomimetic scaffold that promotes healing was the expected outcome. The study validated a terminal sterilization method, suggesting the stability and translational potential of the novel scaffold. Also, the study demonstrated the regenerative abilities of scaffolds using in vitro cell culture experiments and in vivo full-thickness burn wounds of critical size (4 cm × 4 cm) in a rabbit model. Under in vitro conditions, the scaffold enhanced primary dermal fibroblast adhesion and cell proliferation with regulated extracellular matrix (ECM) synthesis. In vivo, the scaffolds promoted healing with mature epithelium coverage involving intact basal cells, superficial keratinocytes, multilayers of keratohyalin, dermal regeneration with angiogenesis, and deposition of remodeled ECM in 28 days. The relative gene expression of the IL6 marker indicated transitions from inflammation to proliferation stage. In addition, we observed skin appendages and rete peg development in the SFFIBHA-treated wound tissues. Although wound closure was observed, neither negative (untreated/sham) nor positive (commercially available product; NeuSkin) control wounds developed skin appendages/rete pegs or native skin architecture. After 56 days, healing with organized ECM production enabled the recovery of mechanical properties of skin with higher tissue maturity in SFFIBHA-treated wounds. Thus, in a single application, the SFFIBHA scaffold proved to be an efficient biomimetic matrix that can guide burn wound regeneration. The developed matrix is a suture-less, hemostatic, off-the-shelf product for potential wound regenerative applications.
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Affiliation(s)
- Rashmi Ramakrishnan
- Department of Applied Biology, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology (SCTIMST), Poojappura, Thiruvananthapuram 695012, Kerala, India
| | - Dimple Chouhan
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati (IITG), Guwahati 781039, Assam, India
| | - Harikrishnan Vijayakumar Sreelatha
- Department of Applied Biology, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology (SCTIMST), Poojappura, Thiruvananthapuram 695012, Kerala, India
| | - Sabareeswaran Arumugam
- Department of Applied Biology, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology (SCTIMST), Poojappura, Thiruvananthapuram 695012, Kerala, India
| | - Biman B Mandal
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati (IITG), Guwahati 781039, Assam, India.,Centre for Nanotechnology, Indian Institute of Technology Guwahati (IITG), Guwahati 781039, Assam, India.,School of Health Sciences & Technology, Indian Institute of Technology Guwahati (IITG), Guwahati 781039, Assam, India
| | - Lissy K Krishnan
- Department of Applied Biology, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology (SCTIMST), Poojappura, Thiruvananthapuram 695012, Kerala, India.,Department of Research & Innovation, DM Wayanad Institute of Medical Sciences (DM WIMS), Meppadi, Wayanad 673577, Kerala, India
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39
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Novel 3D-Printed Cell Culture Inserts for Air-Liquid Interface Cell Culture. LIFE (BASEL, SWITZERLAND) 2022; 12:life12081216. [PMID: 36013395 PMCID: PMC9410432 DOI: 10.3390/life12081216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 07/24/2022] [Accepted: 08/04/2022] [Indexed: 11/16/2022]
Abstract
In skin research, widely used in vitro 2D monolayer models do not sufficiently mimic physiological properties. To replace, reduce, and refine animal experimentation in the spirit of '3Rs', new approaches such as 3D skin equivalents (SE) are needed to close the in vitro/in vivo gap. Cell culture inserts to culture SE are commercially available, however, these inserts are expensive and of limited versatility regarding experimental settings. This study aimed to design novel cell culture inserts fabricated on commercially available 3D printers for the generation of full-thickness SE. A computer-aided design model was realized by extrusion-based 3D printing of polylactic acid filaments (PLA). Improvements in the design of the inserts for easier and more efficient handling were confirmed in cell culture experiments. Cytotoxic effects of the final product were excluded by testing the inserts in accordance with ISO-norm procedures. The final versions of the inserts were tested to generate skin-like 3D scaffolds cultured at an air-liquid interface. Stratification of the epidermal component was demonstrated by histological analyses. In conclusion, here we demonstrate a fast and cost-effective method for 3D-printed inserts suitable for the generation of 3D cell cultures. The system can be set-up with common 3D printers and allows high flexibility for generating customer-tailored cell culture plastics.
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Fan C, Xu Q, Hao R, Wang C, Que Y, Chen Y, Yang C, Chang J. Multi-functional wound dressings based on silicate bioactive materials. Biomaterials 2022; 287:121652. [PMID: 35785753 DOI: 10.1016/j.biomaterials.2022.121652] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 06/21/2022] [Accepted: 06/24/2022] [Indexed: 11/22/2022]
Abstract
Most traditional wound dressings passively offer a protective barrier for the wounds, which lacks the initiative in stimulating tissue regeneration. In addition, cutaneous wound healing is usually accompanied by various complicated conditions, including bacterial infection, skin cancer, and damaged skin appendages, bringing further challenges for wound management in clinic. Therefore, an ideal wound dressing should not only actively stimulate wound healing but also hold multi-functions for solving problems associated with different specific wound conditions. Recent studies have demonstrated that silicate bioceramics and bioglasses are one type of promising materials for the development of wound dressings, as they can actively accelerate wound healing by regulating endothelial cells, dermal fibroblasts, macrophages, and epidermal cells. In particular, silicate-based biomaterials can be further functionalized by specific structural design or doping with functional components, which endow materials with enhanced bioactivities or expanded physicochemical properties such as photothermal, photodynamic, chemodynamic, or imaging properties. The functionalized materials can be used to address wound healing with different demands including but not limited to antibacterial, anticancer, skin appendages regeneration, and wound monitoring. In this review, we summarized the current research on the development of silicate-based multi-functional wound dressings and prospected the development of advanced wound dressings in the future.
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Affiliation(s)
- Chen Fan
- Joint Centre of Translational Medicine, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, China; Joint Centre of Translational Medicine, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang, 325000, China; Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou, Zhejiang, 325000, China
| | - Qing Xu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai, 200050, PR China
| | - Ruiqi Hao
- Joint Centre of Translational Medicine, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, China; Joint Centre of Translational Medicine, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang, 325000, China; Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou, Zhejiang, 325000, China
| | - Chun Wang
- Joint Centre of Translational Medicine, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang, 325000, China; Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou, Zhejiang, 325000, China
| | - Yumei Que
- Joint Centre of Translational Medicine, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, China; Joint Centre of Translational Medicine, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang, 325000, China; Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou, Zhejiang, 325000, China
| | - Yanxin Chen
- Joint Centre of Translational Medicine, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, China; Joint Centre of Translational Medicine, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang, 325000, China; Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou, Zhejiang, 325000, China
| | - Chen Yang
- Joint Centre of Translational Medicine, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, China; Joint Centre of Translational Medicine, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang, 325000, China; Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou, Zhejiang, 325000, China.
| | - Jiang Chang
- Joint Centre of Translational Medicine, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, China; Joint Centre of Translational Medicine, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang, 325000, China; Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou, Zhejiang, 325000, China; State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai, 200050, PR China; Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing, 100049, PR China.
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León-Sosa A, Castañeda V, Espinosa-Vallejo R, Gómez X, Díaz RF, Cabrera F, Caicedo A. Key points for translating wound regenerative agents from in vivo assays in mice to clinical validation. Cytotherapy 2022; 24:1074-1086. [DOI: 10.1016/j.jcyt.2022.07.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 06/07/2022] [Accepted: 07/16/2022] [Indexed: 11/29/2022]
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Shamoun F, Shamoun V, Akhavan A, Tuffaha SH. Target Receptors of Regenerating Nerves: Neuroma Formation and Current Treatment Options. Front Mol Neurosci 2022; 15:859221. [PMID: 35866159 PMCID: PMC9295905 DOI: 10.3389/fnmol.2022.859221] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 05/06/2022] [Indexed: 11/16/2022] Open
Abstract
Neuromas form as a result of disorganized sensory axonal regeneration following nerve injury. Painful neuromas lead to poor quality of life for patients and place a burden on healthcare systems. Modern surgical interventions for neuromas entail guided regeneration of sensory nerve fibers into muscle tissue leading to muscle innervation and neuroma treatment or prevention. However, it is unclear how innervating denervated muscle targets prevents painful neuroma formation, as little is known about the fate of sensory fibers, and more specifically pain fiber, as they regenerate into muscle. Golgi tendon organs and muscle spindles have been proposed as possible receptor targets for the regenerating sensory fibers; however, these receptors are not typically innervated by pain fibers, as these free nerve endings do not synapse on receptors. The mechanisms by which pain fibers are signaled to cease regeneration therefore remain unknown. In this article, we review the physiology underlying nerve regeneration, the guiding molecular signals, and the target receptor specificity of regenerating sensory axons as it pertains to the development and prevention of painful neuroma formation while highlighting gaps in literature. We discuss management options for painful neuromas and the current supporting evidence for the various interventions.
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Affiliation(s)
- Feras Shamoun
- Peripheral Nerve Lab, Department of Plastic and Reconstructive Surgery, Johns Hopkins Hospital, Johns Hopkins University, Baltimore, MD, United States
| | - Valentina Shamoun
- Department of Biological Sciences, University of Toronto at Scarborough, Scarborough, ON, Canada
| | - Arya Akhavan
- Peripheral Nerve Lab, Department of Plastic and Reconstructive Surgery, Johns Hopkins Hospital, Johns Hopkins University, Baltimore, MD, United States
| | - Sami H. Tuffaha
- Peripheral Nerve Lab, Department of Plastic and Reconstructive Surgery, Johns Hopkins Hospital, Johns Hopkins University, Baltimore, MD, United States
- *Correspondence: Sami H. Tuffaha,
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Zhu Z, Zhang X, Hao H, Xu H, Shu J, Hou Q, Wang M. Exosomes Derived From Umbilical Cord Mesenchymal Stem Cells Treat Cutaneous Nerve Damage and Promote Wound Healing. Front Cell Neurosci 2022; 16:913009. [PMID: 35846563 PMCID: PMC9279568 DOI: 10.3389/fncel.2022.913009] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Accepted: 06/02/2022] [Indexed: 11/13/2022] Open
Abstract
Wound repair is a key step in the treatment of skin injury caused by burn, surgery, and trauma. Various stem cells have been proven to promote wound healing and skin regeneration as candidate seed cells. Therefore, exosomes derived from stem cells are emerging as a promising method for wound repair. However, the mechanism by which exosomes promote wound repair is still unclear. In this study, we reported that exosomes derived from umbilical cord mesenchymal stem cells (UC-MSCs) promote wound healing and skin regeneration by treating cutaneous nerve damage. The results revealed that UC-MSCs exosomes (UC-MSC-Exo) promote the growth and migration of dermal fibroblast cells. In in vitro culture, dermal fibroblasts could promote to nerve cells and secrete nerve growth factors when stimulated by exosomes. During the repair process UC-MSC-Exo accelerated the recruitment of fibroblasts at the site of trauma and significantly enhanced cutaneous nerve regeneration in vivo. Interestingly, it was found that UC-MSC-Exo could promote wound healing and skin regeneration by recruiting fibroblasts, stimulating them to secrete nerve growth factors (NGFs) and promoting skin nerve regeneration. Therefore, we concluded that UC-MSC-Exo promote cutaneous nerve repair, which may play an important role in wound repair and skin regeneration.
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Affiliation(s)
- Ziying Zhu
- College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing, China
- The First Medical Center, Chinese People’s Liberation Army General Hospital, Beijing, China
- *Correspondence: Ziying Zhu,
| | - Xiaona Zhang
- College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing, China
| | - Haojie Hao
- The First Medical Center, Chinese People’s Liberation Army General Hospital, Beijing, China
| | - Heran Xu
- College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing, China
| | - Jun Shu
- The First Medical Center, Chinese People’s Liberation Army General Hospital, Beijing, China
| | - Qian Hou
- The First Medical Center, Chinese People’s Liberation Army General Hospital, Beijing, China
- Medical Innovation Research Center, Chinese People’s Liberation Army General Hospital, Beijing, China
- Qian Hou,
| | - Min Wang
- College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing, China
- Min Wang,
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Xia B, Chen G. Research progress of natural tissue-derived hydrogels for tissue repair and reconstruction. Int J Biol Macromol 2022; 214:480-491. [PMID: 35753517 DOI: 10.1016/j.ijbiomac.2022.06.137] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 06/05/2022] [Accepted: 06/20/2022] [Indexed: 12/26/2022]
Abstract
There are many different grafts to repair damaged tissue. Various types of biological scaffolds, including films, fibers, microspheres, and hydrogels, can be used for tissue repair. A hydrogel, which is composed a natural or synthetic polymer network with high water absorption capacity, can provide a microenvironment closely resembling the extracellular matrix (ECM) of natural tissues to stimulate cell adhesion, proliferation, and differentiation. It has been shown to have great application potential in the field of tissue repair and regeneration. Hydrogels derived from natural tissues retain a variety of proteins and growth factors in optimal proportions, which is beneficial for the regeneration of specific tissues. This article reviews the latest research advances in the field of hydrogels from a variety of natural tissue sources, including bone tissue, blood vessels, nerve tissue, adipose tissue, skin tissue, and muscle tissue, including preparation methods, advantages, and applications in tissue engineering and regenerative medicine. Finally, it summarizes and discusses the challenges faced by natural tissue-derived hydrogels used in tissue repair, as well as future research and application directions.
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Affiliation(s)
- Bin Xia
- Engineering Research Center for Waste Oil Recovery Technology and Equipment, Ministry of Education, Chongqing Technology and Business University, Chongqing 400067, PR China
| | - Guobao Chen
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, PR China; Chongqing Key Laboratory of Medicinal Chemistry & Molecular Pharmacology, Chongqing University of Technology, Chongqing 400054, PR China.
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Pishel I, Yankova T, Dubiley T, Shytikov D. Reciprocal blood exchange in heterochronic parabionts has a deleterious effect on the lifespan of young animals without a positive effect for old animals. Rejuvenation Res 2022; 25:191-199. [PMID: 35747947 DOI: 10.1089/rej.2022.0029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Our previous study showed that the exchange of blood between heterochronic parabionts for 3 months did not rejuvenate the immune system of the old partners. Moreover, the young immune system became more aged and began to function according to the "old" principle. Does this "forced aging" affect all organism's systems in this model? We checked the levels of corticosterone, testosterone, IGF-1, insulin, thyroxine in the blood of heterochronic parabionts but did not find significant changes compared to the age-related controls. Since numerous data support the possibility of rejuvenation of the brain, muscles, and other tissues using the model of heterochronic parabiosis, as well as opposite data, we planned to assess the overall effect of this long-term blood exchange on the rate of organism aging. We measured the lifespan of animals that exchanged with blood for 3 months and then were disconnected. Median and maximum life expectancy decreased in young heterochronic parabionts compared with the isochronic control. Old heterochronic parabionts showed only a small trend towards an increase in the median lifespan but it was not statistically significant, and the maximum lifespan did not change compared to the isochronic parabionts. These data support our assumption that old blood contains factors capable of inducing aging in young animals. Finding and selective suppression of aging factor production in the organism could be the key research field for life extension.
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Affiliation(s)
- Iryna Pishel
- Institute of Gerontology NAMS of Ukraine, Pathophysiology and Immunology , 67 Vyshgorodska St, Kyiv, Ukraine, 04114.,Institute of Gerontology NAMS of Ukraine, Pathophysiology and Immunology, 67 Vyshgorodska St, Kyiv, Ukraine, 04114;
| | | | - Tatiana Dubiley
- D F Chebotarev State Institute of Gerontology NAMS of Ukraine, 119156, Kyiv, Ukraine;
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Mu R, Campos de Souza S, Liao Z, Dong L, Wang C. Reprograming the immune niche for skin tissue regeneration - From cellular mechanisms to biomaterials applications. Adv Drug Deliv Rev 2022; 185:114298. [PMID: 35439569 DOI: 10.1016/j.addr.2022.114298] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 04/07/2022] [Accepted: 04/12/2022] [Indexed: 02/07/2023]
Abstract
Despite the rapid development of therapeutic approaches for skin repair, chronic wounds such as diabetic foot ulcers remain an unaddressed problem that affects millions of people worldwide. Increasing evidence has revealed the crucial and diverse roles of the immune cells in the development and repair of the skin tissue, prompting new research to focus on further understanding and modulating the local immune niche for comprehensive, 'perfect' regeneration. In this review, we first introduce how different immunocytes and certain stromal cells involved in innate and adaptive immunity coordinate to maintain the immune niche and tissue homeostasis, with emphasis on their specific roles in normal and pathological wound healing. We then discuss novel engineering approaches - particularly biomaterials systems and cellular therapies - to target different players of the immune niche, with three major aims to i) overcome 'under-healing', ii) avoid 'over-healing', and iii) promote functional restoration, including appendage development. Finally, we highlight how these strategies strive to manage chronic wounds and achieve full structural and functional skin recovery by creating desirable 'soil' through modulating the immune microenvironment.
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Qi L, Zhang C, Wang B, Yin J, Yan S. Progress in hydrogels for skin wound repair. Macromol Biosci 2022; 22:e2100475. [PMID: 35388605 DOI: 10.1002/mabi.202100475] [Citation(s) in RCA: 53] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 03/21/2022] [Indexed: 11/08/2022]
Abstract
As the first defensive line between the human body and the outside world, the skin is vulnerable to damage from the external environment. Skin wounds can be divided into acute wounds (mechanical injuries, chemical injuries and surgical wounds, etc.) and chronic wounds (burns, infections, diabetes, etc.). In order to manage skin wound, a variety of wound dressings have been developed, including gauze, films, foams, nanofibers, hydrocolloids and hydrogels. Recently, hydrogels have received much attention because of their natural extracellular matrix (ECM)-mimik structure, tunable mechanical properties, and facile bioactive substance delivery capability. They show great potential application in skin wound repair. This paper first introduces the anatomy and function of the skin, the process of wound healing and conventional wound dressings, and then introduces the composition and construction methods of hydrogels. Next, this paper introduces the necessary properties of hydrogels in skin wound repair and the latest research progress of hydrogel dressings for skin wound repair. Finally, the future development goals of hydrogel materials in the field of wound healing are proposed. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Liangfa Qi
- Department of Polymer Materials, School of Materials Science and Engineering, Shanghai University, Shanghai, 200444, PR China
| | - Chenlu Zhang
- Department of Polymer Materials, School of Materials Science and Engineering, Shanghai University, Shanghai, 200444, PR China
| | - Bo Wang
- Department of Polymer Materials, School of Materials Science and Engineering, Shanghai University, Shanghai, 200444, PR China
| | - Jingbo Yin
- Department of Polymer Materials, School of Materials Science and Engineering, Shanghai University, Shanghai, 200444, PR China
| | - Shifeng Yan
- Department of Polymer Materials, School of Materials Science and Engineering, Shanghai University, Shanghai, 200444, PR China
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Dou Y, Cui W, Yang X, Lin Y, Ma X, Cai X. Applications of tetrahedral DNA nanostructures in wound repair and tissue regeneration. BURNS & TRAUMA 2022; 10:tkac006. [PMID: 35280457 PMCID: PMC8912983 DOI: 10.1093/burnst/tkac006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 01/25/2022] [Indexed: 02/05/2023]
Abstract
Tetrahedral DNA nanostructures (TDNs) are molecules with a pyramidal structure formed by folding four single strands of DNA based on the principle of base pairing. Although DNA has polyanionic properties, the special spatial structure of TDNs allows them to penetrate the cell membrane without the aid of transfection agents in a caveolin-dependent manner and enables them to participate in the regulation of cellular processes without obvious toxic side effects. Because of their stable spatial structure, TDNs resist the limitations imposed by nuclease activity and innate immune responses to DNA. In addition, TDNs have good editability and biocompatibility, giving them great advantages for biomedical applications. Previous studies have found that TDNs have a variety of biological properties, including promoting cell migration, proliferation and differentiation, as well as having anti-inflammatory, antioxidant, anti-infective and immune regulation capabilities. Moreover, we confirmed that TDNs can promote the regeneration and repair of skin, blood vessels, muscles and bone tissues. Based on these findings, we believe that TDNs have broad prospects for application in wound repair and regeneration. This article reviews recent progress in TDN research and its applications.
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Affiliation(s)
- Yikai Dou
- Psychiatric Laboratory and Mental Health Center, West China Hospital of Sichuan University, Chengdu, Sichuan, 610064, China
| | - Weitong Cui
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China
| | - Xiao Yang
- Psychiatric Laboratory and Mental Health Center, West China Hospital of Sichuan University, Chengdu, Sichuan, 610064, China
| | - Yunfeng Lin
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China
| | - Xiaohong Ma
- Psychiatric Laboratory and Mental Health Center, West China Hospital of Sichuan University, Chengdu, Sichuan, 610064, China
| | - Xiaoxiao Cai
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China
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Hashizume H, Nakatani E, Sato Y, Goto H, Yagi H, Miyachi Y. A new susceptibility index to predict the risk of severe herpes zoster-associated pain: A Japanese regional population-based cohort study, the Shizuoka study. J Dermatol Sci 2022; 105:170-175. [PMID: 35181196 DOI: 10.1016/j.jdermsci.2022.02.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 12/29/2021] [Accepted: 02/06/2022] [Indexed: 11/16/2022]
Abstract
BACKGROUND Approximately 7-20% of patients with herpes zoster (HZ) develop zoster-associated pain (ZAP). ZAP not only impairs quality of life and psychological well-being, but also can reduce work effectiveness, which has negative economic effects. Reports of ZAP risk factors are inconsistent. OBJECTIVE To confirm risk factors for the development of severe ZAP in HZ patients in Japan using a large-scale database, the Shizuoka Kokuho Database. METHODS A population-based cohort study using the Shizuoka Kokuho Database was conducted. Of 792,647 patients, 7491 (0.95%) experienced "severe ZAP" (as defined in this study). We developed a ZAP risk prediction scoring system by identifying risk factors using logistic regression analysis of several candidate risk factors for severe ZAP: age, sex, seasonality, and presence of comorbidities (using the Charlson comorbidity index), excluding HIV/AIDS. RESULTS We identified peripheral vascular disease and the onset from October to December as novel risk factors for severe ZAP, in addition to the previously reported risk factors of age and comorbidities (cerebral vascular disease, chronic pulmonary disease, rheumatic disease, peptic ulcer, liver disease, diabetes, and malignant neoplasms with/without metastasis). In contrast, dementia was found to reduce ZAP risk. We developed a susceptibility index to predict the risk of ZAP. CONCLUSION We newly demonstrated that peripheral vascular disease and the onset from October to December are ZAP risk factors. Our comorbidity findings support previous observations. The susceptibility index proposed here provides a new approach to the prevention of ZAP using early intervention for high-risk patients.
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Affiliation(s)
- Hideo Hashizume
- Graduate School of Public Health, Shizuoka Graduate University of Public Health, Shizuoka, Japan; Department of Dermatology, Iwata City Hospital, Shizuoka, Japan.
| | - Eiji Nakatani
- Graduate School of Public Health, Shizuoka Graduate University of Public Health, Shizuoka, Japan; Department of Dermatology, Shizuoka General Hospital, Shizuoka, Japan
| | - Yoko Sato
- Graduate School of Public Health, Shizuoka Graduate University of Public Health, Shizuoka, Japan; Department of Dermatology, Shizuoka General Hospital, Shizuoka, Japan
| | - Haruka Goto
- Department of Dermatology, Shizuoka General Hospital, Shizuoka, Japan
| | - Hiroaki Yagi
- Department of Dermatology, Shizuoka General Hospital, Shizuoka, Japan
| | - Yoshiki Miyachi
- Graduate School of Public Health, Shizuoka Graduate University of Public Health, Shizuoka, Japan
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Hwang YJ, Lee HC, Park SH, Yoon ES. A Comparative Study of Breast Sensibility and Patient Satisfaction After Breast Reconstruction: Autologous, 2-Stage Implant-Based, and Prepectoral Direct-to-Implant Reconstruction. Ann Plast Surg 2022; 88:262-270. [PMID: 35130204 DOI: 10.1097/sap.0000000000003034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND Currently, a variety of treatment modalities are implemented for breast reconstruction. However, clinical prognosis regarding sensory regeneration of the breast and patient-reported satisfaction remains underexamined. In this study, we aimed to compare breast sensibility after various reconstruction. METHODS We conducted a retrospective comparative study of all patients who underwent breast reconstruction between August 2016 and October 2019 at our institution. Acellular dermal matrixes were used to cover the implant inferolaterally in a dual-plane subpectoral approach and to wrap the implant in prepectoral direct to implant (DTI). The cutaneous tactile pressure threshold and patient satisfaction outcome were tested. RESULTS A total of 105 breasts were assessed, 30 breasts reconstructed with deep inferior epigastric perforator (DIEP) flap, 40 breasts reconstructed with 2-stage subpectoral implant, and 35 breasts reconstructed with prepectoral DTI. In the specific group-to-group analysis, DIEP and implant groups showed significant differences in sensory recovery, mainly in lateral areas of the reconstructed breast. In 2-stage reconstruction and DTI groups, there were no statistically significant differences. When comparing patient groups using only patients with follow-up lengths of more than 12 months, the difference was more clearly indicated (P = 0.049). Better sensory recovery predicted high satisfaction scores in patient-reported outcomes (P = 0.007). CONCLUSIONS We found that subpectoral implant reconstruction and DTI show no statistically significant differences in sensory recovery, and autologous DIEP flap reconstruction results in a better prognosis than prosthesis implant reconstruction. Furthermore, the clarity of the differences increased when the follow-up length was longer than 12 months. Better patient-reported satisfaction was associated with good breast sensibility.
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Affiliation(s)
- Yong-Jae Hwang
- From the Department of Plastic and Reconstructive Surgery, Korea University Anam Hospital, Seoul, Republic of Korea
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