101
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Rogovaya OS, Abolin DS, Cherkashina OL, Smyslov AD, Vorotelyak EA, Kalabusheva EP. In vitro and in vivo Evaluation of Antifibrotic Properties of Verteporfin in a Composition of a Collagen Scaffold. BIOCHEMISTRY. BIOKHIMIIA 2024; 89:942-957. [PMID: 38880654 DOI: 10.1134/s0006297924050146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 03/05/2024] [Accepted: 03/31/2024] [Indexed: 06/18/2024]
Abstract
Extensive skin damage requires specialized therapy that stimulates regeneration processes without scarring. The possibility of using combination of a collagen gel application as a wound dressing and fibroblast attractant with verteporfin as an antifibrotic agent was examined in vivo and in vitro. In vitro effects of verteporfin on viability and myofibroblast markers expression were evaluated using fibroblasts isolated from human scar tissue. In vivo the collagen gel and verteporfin (individually and in combination) were applied into the wound to investigate scarring during skin regeneration: deviations in skin layer thickness, collagen synthesis, and extracellular matrix fibers were characterized. The results indicate that verteporfin reduces fibrotic phenotype by suppressing expression of the contractile protein Sm22α without inducing cell death. However, administration of verteporfin in combination with the collagen gel disrupts its ability to direct wound healing in a scarless manner, which may be related to incompatibility of the mechanisms by which collagen and verteporfin control regeneration.
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Affiliation(s)
- Olga S Rogovaya
- Koltzov Institute of Developmental Biology, Russian Academy of Sciences, Moscow, 119334, Russia.
| | - Danila S Abolin
- Koltzov Institute of Developmental Biology, Russian Academy of Sciences, Moscow, 119334, Russia
| | - Olga L Cherkashina
- Koltzov Institute of Developmental Biology, Russian Academy of Sciences, Moscow, 119334, Russia
| | - Artem D Smyslov
- Koltzov Institute of Developmental Biology, Russian Academy of Sciences, Moscow, 119334, Russia
| | - Ekaterina A Vorotelyak
- Koltzov Institute of Developmental Biology, Russian Academy of Sciences, Moscow, 119334, Russia
| | - Ekaterina P Kalabusheva
- Koltzov Institute of Developmental Biology, Russian Academy of Sciences, Moscow, 119334, Russia
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102
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Pan C, Hao X, Deng X, Lu F, Liu J, Hou W, Xu T. The roles of Hippo/YAP signaling pathway in physical therapy. Cell Death Discov 2024; 10:197. [PMID: 38670949 PMCID: PMC11053014 DOI: 10.1038/s41420-024-01972-x] [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: 01/24/2024] [Revised: 04/16/2024] [Accepted: 04/17/2024] [Indexed: 04/28/2024] Open
Abstract
Cellular behavior is regulated by mechanical signals within the cellular microenvironment. Additionally, changes of temperature, blood flow, and muscle contraction also affect cellular state and the development of diseases. In clinical practice, physical therapy techniques such as ultrasound, vibration, exercise, cold therapy, and hyperthermia are commonly employed to alleviate pain and treat diseases. However, the molecular mechanism about how these physiotherapy methods stimulate local tissues and control gene expression remains unknow. Fortunately, the discovery of YAP filled this gap, which has been reported has the ability to sense and convert a wide variety of mechanical signals into cell-specific programs for transcription, thereby offering a fresh perspective on the mechanisms by which physiotherapy treat different diseases. This review examines the involvement of Hippo/YAP signaling pathway in various diseases and its role in different physical therapy approaches on diseases. Furthermore, we explore the potential therapeutic implications of the Hippo/YAP signaling pathway and address the limitations and controversies surrounding its application in physiotherapy.
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Affiliation(s)
- Chunran Pan
- Department of Rehabilitation, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiaoxia Hao
- Department of Rehabilitation, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiaofeng Deng
- Department of Rehabilitation, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Fan Lu
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jiawei Liu
- Department of Rehabilitation, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Wenjie Hou
- Department of Rehabilitation, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Tao Xu
- Department of Rehabilitation, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
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103
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Wu J, Wei YT. [Regenerative rehabilitation: the effects of physical factors on regeneration]. ZHONGHUA SHAO SHANG YU CHUANG MIAN XIU FU ZA ZHI 2024; 40:301-306. [PMID: 38664023 DOI: 10.3760/cma.j.cn501225-20231229-00278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 05/01/2024]
Abstract
Wound regeneration and repair is one of the primary research fields in burn and wound repair surgery. In recent years, with the continuous advancement of treatment concept and technologies in the field of rehabilitation, the connection between rehabilitation treatment and wound regeneration and repair has become closer, forming a new concept "regenerative rehabilitation". This article discussed the concept formation and development status of regenerative rehabilitation, and the future development and potential leading value of regenerative rehabilitation field.
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Affiliation(s)
- J Wu
- Department of Burns and Plastic Surgery, Department of Wound Repair, the First Affiliated Hospital of Shenzhen University, Shenzhen 518035, China
| | - Y T Wei
- Department of Burns and Plastic Surgery, Department of Wound Repair, the First Affiliated Hospital of Shenzhen University, Shenzhen 518035, China
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104
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Okano J, Nakagawa T, Kojima H. Plasticity of bone marrow-derived cell differentiation depending on microenvironments in the skin. Front Physiol 2024; 15:1391640. [PMID: 38699142 PMCID: PMC11063383 DOI: 10.3389/fphys.2024.1391640] [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: 02/26/2024] [Accepted: 04/04/2024] [Indexed: 05/05/2024] Open
Abstract
Bone marrow-derived cells (BMDCs) are heterogeneous populations in which not only pluripotent stem cells, namely, hematopoietic stem cells (HSCs), mesenchymal stem cells (MSC) but also endothelial progenitor cells (EPC) are involved. BMDCs contribute to the maintenance of homeostasis and recovery from disrupted homeostasis as the immune, endocrine, and nervous systems. The skin is the largest organ in which various tissues, such as the epidermis, dermis, skin appendages (i.e., hair follicles), fats, muscles, and vessels, are tightly and systematically packed. It functions as a physical barrier to block the invasion of harmful substances and pathogenic microorganisms and properly regulate water evaporation. The skin is exposed to injuries from external stimuli because it is the outermost layer and owing to its specificity. Recovery from physical injuries and DNA mutations occurs constantly in the skin, but medical treatments are required for impaired wound healing. Recently, conservative treatments utilizing scaffolds have attracted attention as alternatives to surgical therapy, which is highly invasive. Against this background, numerous scaffolds are available in a clinical setting, although they have not surpassed surgery because of their distinct disadvantages. Here, we discuss the plasticity of BMDCs in the skin to maintain homeostasis, in addition to their critical roles on recovery from disrupted homeostasis. We also share our perspective on how scaffolds can be developed to establish scaffolds beyond surgery to regenerate skin structure during wound healing by maximally utilizing the plasticity of BMDCs.
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Affiliation(s)
- Junko Okano
- Department of Plastic and Reconstructive Surgery, Shiga University of Medical Science, Otsu, Japan
| | - Takahiko Nakagawa
- Department of Regenerative Medicine Development, Shiga University of Medical Science, Otsu, Japan
| | - Hideto Kojima
- Department of Regenerative Medicine Development, Shiga University of Medical Science, Otsu, Japan
- Department of Biocommunication Development, Shiga University of Medical Science, Otsu, Japan
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105
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DiIorio SE, Young B, Parker JB, Griffin MF, Longaker MT. Understanding Tendon Fibroblast Biology and Heterogeneity. Biomedicines 2024; 12:859. [PMID: 38672213 PMCID: PMC11048404 DOI: 10.3390/biomedicines12040859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Revised: 04/06/2024] [Accepted: 04/08/2024] [Indexed: 04/28/2024] Open
Abstract
Tendon regeneration has emerged as an area of interest due to the challenging healing process of avascular tendon tissue. During tendon healing after injury, the formation of a fibrous scar can limit tendon strength and lead to subsequent complications. The specific biological mechanisms that cause fibrosis across different cellular subtypes within the tendon and across different tendons in the body continue to remain unknown. Herein, we review the current understanding of tendon healing, fibrosis mechanisms, and future directions for treatments. We summarize recent research on the role of fibroblasts throughout tendon healing and describe the functional and cellular heterogeneity of fibroblasts and tendons. The review notes gaps in tendon fibrosis research, with a focus on characterizing distinct fibroblast subpopulations in the tendon. We highlight new techniques in the field that can be used to enhance our understanding of complex tendon pathologies such as fibrosis. Finally, we explore bioengineering tools for tendon regeneration and discuss future areas for innovation. Exploring the heterogeneity of tendon fibroblasts on the cellular level can inform therapeutic strategies for addressing tendon fibrosis and ultimately reduce its clinical burden.
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Affiliation(s)
- Sarah E. DiIorio
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA; (S.E.D.); (B.Y.); (J.B.P.); (M.F.G.)
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Bill Young
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA; (S.E.D.); (B.Y.); (J.B.P.); (M.F.G.)
| | - Jennifer B. Parker
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA; (S.E.D.); (B.Y.); (J.B.P.); (M.F.G.)
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Michelle F. Griffin
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA; (S.E.D.); (B.Y.); (J.B.P.); (M.F.G.)
| | - Michael T. Longaker
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA; (S.E.D.); (B.Y.); (J.B.P.); (M.F.G.)
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
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106
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Chitturi P, Leask A. The role of positional information in determining dermal fibroblast diversity. Matrix Biol 2024; 128:31-38. [PMID: 38423396 DOI: 10.1016/j.matbio.2024.02.009] [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: 10/31/2023] [Revised: 02/23/2024] [Accepted: 02/26/2024] [Indexed: 03/02/2024]
Abstract
The largest mammalian organ, skin, consisting of a dermal connective tissue layer that underlies and supports the epidermis, acts as a protective barrier that excludes external pathogens and disseminates sensory signals emanating from the local microenvironment. Dermal connective tissue is comprised of a collagen-rich extracellular matrix (ECM) that is produced by connective tissue fibroblasts resident within the dermis. When wounded, a tissue repair program is induced whereby fibroblasts, in response to alterations in the microenvironment, produce new ECM components, resulting in the formation of a scar. Failure to terminate the normal tissue repair program causes fibrotic conditions including: hypertrophic scars, keloids, and the systemic autoimmune connective tissue disease scleroderma (systemic sclerosis, SSc). Histological and single-cell RNA sequencing (scRNAseq) studies have revealed that fibroblasts are heterogeneous and highly plastic. Understanding how this diversity contributes to dermal homeostasis, wounding, fibrosis, and cancer may ultimately result in novel anti-fibrotic therapies and personalized medicine. This review summarizes studies supporting this concept.
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Affiliation(s)
- Pratyusha Chitturi
- College of Dentistry, University of Saskatchewan, 105 Wiggins Road, Saskatoon, SK, Canada
| | - Andrew Leask
- College of Dentistry, University of Saskatchewan, 105 Wiggins Road, Saskatoon, SK, Canada.
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107
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Mascharak S, Guo JL, Griffin M, Berry CE, Wan DC, Longaker MT. Modelling and targeting mechanical forces in organ fibrosis. NATURE REVIEWS BIOENGINEERING 2024; 2:305-323. [PMID: 39552705 PMCID: PMC11567675 DOI: 10.1038/s44222-023-00144-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 11/09/2023] [Indexed: 11/19/2024]
Abstract
Few efficacious therapies exist for the treatment of fibrotic diseases, such as skin scarring, liver cirrhosis and pulmonary fibrosis, which is related to our limited understanding of the fundamental causes and mechanisms of fibrosis. Mechanical forces from cell-matrix interactions, cell-cell contact, fluid flow and other physical stimuli may play a central role in the initiation and propagation of fibrosis. In this Review, we highlight the mechanotransduction mechanisms by which various sources of physical force drive fibrotic disease processes, with an emphasis on central pathways that may be therapeutically targeted to prevent and reverse fibrosis. We then discuss engineered models of mechanotransduction in fibrosis, as well as molecular and biomaterials-based therapeutic approaches for limiting fibrosis and promoting regenerative healing phenotypes in various organs. Finally, we discuss challenges within fibrosis research that remain to be addressed and that may greatly benefit from next-generation bioengineered model systems.
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Affiliation(s)
- Shamik Mascharak
- Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford University School of Medicine, Stanford, CA, USA
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA, USA
- These authors contributed equally: Shamik Mascharak, Jason L. Guo, Michelle Griffin
| | - Jason L. Guo
- Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford University School of Medicine, Stanford, CA, USA
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA, USA
- These authors contributed equally: Shamik Mascharak, Jason L. Guo, Michelle Griffin
| | - Michelle Griffin
- Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford University School of Medicine, Stanford, CA, USA
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA, USA
- These authors contributed equally: Shamik Mascharak, Jason L. Guo, Michelle Griffin
| | - Charlotte E. Berry
- Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - Derrick C. Wan
- Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - Michael T. Longaker
- Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford University School of Medicine, Stanford, CA, USA
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA, USA
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108
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Berry CE, Abbas DB, Griffin M, Lintel H, Guo J, Kameni L, Churukian AA, Fazilat AZ, Chen K, Gurtner GC, Longaker MT, Momeni A, Wan DC. Deferoxamine topical cream superior to patch in rescuing radiation-induced fibrosis of unwounded and wounded skin. J Cell Mol Med 2024; 28:e18306. [PMID: 38613357 PMCID: PMC11015393 DOI: 10.1111/jcmm.18306] [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: 02/10/2024] [Revised: 03/23/2024] [Accepted: 03/26/2024] [Indexed: 04/14/2024] Open
Abstract
Topical patch delivery of deferoxamine (DFO) has been studied as a treatment for this fibrotic transformation in irradiated tissue. Efficacy of a novel cream formulation of DFO was studied as a RIF therapeutic in unwounded and excisionally wounded irradiated skin. C57BL/6J mice underwent 30 Gy of radiation to the dorsum followed by 4 weeks of recovery. In a first experiment, mice were separated into six conditions: DFO 50 mg cream (D50), DFO 100 mg cream (D100), soluble DFO injections (DI), DFO 1 mg patch (DP), control cream (Vehicle), and irradiated untreated skin (IR). In a second experiment, excisional wounds were created on the irradiated dorsum of mice and then divided into four treatment groups: DFO 100 mg Cream (W-D100), DFO 1 mg patch (W-DP), control cream (W-Vehicle), and irradiated untreated wounds (W-IR). Laser Doppler perfusion scans, biomechanical testing, and histological analysis were performed. In irradiated skin, D100 improved perfusion compared to D50 or DP. Both D100 and DP enhanced dermal characteristics, including thickness, collagen density and 8-isoprostane staining compared to untreated irradiated skin. D100 outperformed DP in CD31 staining, indicating higher vascular density. Extracellular matrix features of D100 and DP resembled normal skin more closely than DI or control. In radiated excisional wounds, D100 facilitated faster wound healing and increased perfusion compared to DP. The 100 mg DFO cream formulation rescued RIF of unwounded irradiated skin and improved excisional wound healing in murine skin relative to patch delivery of DFO.
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Affiliation(s)
- Charlotte E. Berry
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of SurgeryStanford University School of MedicineStanfordCaliforniaUSA
| | - Darren B. Abbas
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of SurgeryStanford University School of MedicineStanfordCaliforniaUSA
| | - Michelle Griffin
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of SurgeryStanford University School of MedicineStanfordCaliforniaUSA
| | - Hendrik Lintel
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of SurgeryStanford University School of MedicineStanfordCaliforniaUSA
| | - Jason Guo
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of SurgeryStanford University School of MedicineStanfordCaliforniaUSA
| | - Lionel Kameni
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of SurgeryStanford University School of MedicineStanfordCaliforniaUSA
| | - Andrew A. Churukian
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of SurgeryStanford University School of MedicineStanfordCaliforniaUSA
| | - Alexander Z. Fazilat
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of SurgeryStanford University School of MedicineStanfordCaliforniaUSA
| | - Kellen Chen
- Department of SurgeryThe University of Arizona College of MedicineTucsonArizonaUSA
| | - Geoffrey C. Gurtner
- Department of SurgeryThe University of Arizona College of MedicineTucsonArizonaUSA
| | - Michael T. Longaker
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of SurgeryStanford University School of MedicineStanfordCaliforniaUSA
- Institute for Stem Cell Biology and Regenerative MedicineStanford UniversityStanfordCaliforniaUSA
| | - Arash Momeni
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of SurgeryStanford University School of MedicineStanfordCaliforniaUSA
| | - Derrick C. Wan
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of SurgeryStanford University School of MedicineStanfordCaliforniaUSA
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109
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Cotterell A, Griffin M, Downer MA, Parker JB, Wan D, Longaker MT. Understanding wound healing in obesity. World J Exp Med 2024; 14:86898. [PMID: 38590299 PMCID: PMC10999071 DOI: 10.5493/wjem.v14.i1.86898] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 09/30/2023] [Accepted: 01/11/2024] [Indexed: 03/19/2024] Open
Abstract
Obesity has become more prevalent in the global population. It is associated with the development of several diseases including diabetes mellitus, coronary heart disease, and metabolic syndrome. There are a multitude of factors impacted by obesity that may contribute to poor wound healing outcomes. With millions worldwide classified as obese, it is imperative to understand wound healing in these patients. Despite advances in the understanding of wound healing in both healthy and diabetic populations, much is unknown about wound healing in obese patients. This review examines the impact of obesity on wound healing and several animal models that may be used to broaden our understanding in this area. As a growing portion of the population identifies as obese, understanding the underlying mechanisms and how to overcome poor wound healing is of the utmost importance.
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Affiliation(s)
- Asha Cotterell
- Division of Plastic and Reconstructive Surgery, Stanford University, Palo Alto, CA 94301, United States
| | - Michelle Griffin
- Division of Plastic and Reconstructive Surgery, Stanford University, Palo Alto, CA 94301, United States
| | - Mauricio A Downer
- Stanford University School of Medicine, Stanford University School of Medicine, Palo Alto, CA 94301, United States
| | - Jennifer B Parker
- Stanford University School of Medicine, Stanford University School of Medicine, Palo Alto, CA 94301, United States
| | - Derrick Wan
- Department of Surgery, Stanford University School of Medicine, Hagey Laboratory for Pediatric Regenerative Medicine, Palo Alto, CA 94301, United States
| | - Michael T Longaker
- Department of Surgery, Stanford University School of Medicine, Hagey Laboratory for Pediatric Regenerative Medicine, Palo Alto, CA 94301, United States
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110
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Wang P, Cai F, Li Y, Yang X, Feng R, Lu H, Bai X, Han J. Emerging trends in the application of hydrogel-based biomaterials for enhanced wound healing: A literature review. Int J Biol Macromol 2024; 261:129300. [PMID: 38216016 DOI: 10.1016/j.ijbiomac.2024.129300] [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: 10/24/2023] [Revised: 01/01/2024] [Accepted: 01/05/2024] [Indexed: 01/14/2024]
Abstract
Currently, there is a rising global incidence of diverse acute and chronic wounds, underscoring the immediate necessity for research and treatment advancements in wound repair. Hydrogels have emerged as promising materials for wound healing due to their unique physical and chemical properties. This review explores the classification and characteristics of hydrogel dressings, innovative preparation strategies, and advancements in delivering and releasing bioactive substances. Furthermore, it delves into the functional applications of hydrogels in wound healing, encompassing areas such as infection prevention, rapid hemostasis and adhesion adaptation, inflammation control and immune regulation, granulation tissue formation, re-epithelialization, and scar prevention and treatment. The mechanisms of action of various functional hydrogels are also discussed. Finally, this article also addresses the current limitations of hydrogels and provides insights into their potential future applications and upcoming innovative designs.
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Affiliation(s)
- Peng Wang
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, Xi'an, Shaanxi, China
| | - Feiyu Cai
- Department of Burns and Plastic Surgery & Wound Repair Surgery, the Lanzhou University Second Hospital, Lanzhou, Gansu, China
| | - Yu Li
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, Xi'an, Shaanxi, China
| | - Xuekang Yang
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, Xi'an, Shaanxi, China
| | - Rongqin Feng
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, Xi'an, Shaanxi, China
| | - He Lu
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, Xi'an, Shaanxi, China
| | - Xiaozhi Bai
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, Xi'an, Shaanxi, China
| | - Juntao Han
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, Xi'an, Shaanxi, China.
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111
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Wang H, Qi LL, Shema C, Jiang KY, Ren P, Wang H, Wang L. Advances in the role and mechanism of fibroblasts in fracture healing. Front Endocrinol (Lausanne) 2024; 15:1350958. [PMID: 38469138 PMCID: PMC10925620 DOI: 10.3389/fendo.2024.1350958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Accepted: 02/01/2024] [Indexed: 03/13/2024] Open
Abstract
With the development of social population ageing, bone fracture has become a global public health problem due to its high morbidity, disability and mortality. Fracture healing is a complex phenomenon involving the coordinated participation of immigration, differentiation and proliferation of inflammatory cells, angioblasts, fibroblasts, chondroblasts and osteoblasts which synthesize and release bioactive substances of extracellular matrix components, Mortality caused by age-related bone fractures or osteoporosis is steadily increasing worldwide as the population ages. Fibroblasts play an important role in the process of fracture healing. However, it is not clear how the growth factors and extracellular matrix stiffness of the bone-regeneration microenvironment affects the function of osteoblasts and fibroblasts in healing process. Therefore, this article focuses on the role of fibroblasts in the process of fracture healing and mechanisms of research progress.
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Affiliation(s)
- Hui Wang
- Department of Orthopedics, The First Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Li-li Qi
- Experimental Center for Teaching of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Clement Shema
- Department of Orthopedic Research Center, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
- International Education College of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Kui-ying Jiang
- National Demonstration Center for Experimental Basic Medical Education, Capital Medical University, Beijing, China
| | - Ping Ren
- Experimental Center for Teaching of Hebei Medical University, Shijiazhuang, Hebei, China
| | - He Wang
- Department of Pathogenic Biology, Hebei Medical University, Shijiazhuang, Hebei, China
| | - Lei Wang
- Department of Human Anatomy, Institute of Medicine and Health, Hebei Medical University, Shijiazhuang, Hebei, China
- The Key Laboratory of Neural and Vascular Biology, Ministry of Education, Hebei Medical University, Shijiazhuang, Hebei, China
- Neuroscience Research Center, Hebei Medical University, Shijiazhuang, Hebei, China
- Hebei Key Laboratory of Neurodegenerative Disease Mechanism, Shijiazhuang, Hebei, China
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112
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Li YY, Ji SF, Fu XB, Jiang YF, Sun XY. Biomaterial-based mechanical regulation facilitates scarless wound healing with functional skin appendage regeneration. Mil Med Res 2024; 11:13. [PMID: 38369464 PMCID: PMC10874556 DOI: 10.1186/s40779-024-00519-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 01/30/2024] [Indexed: 02/20/2024] Open
Abstract
Scar formation resulting from burns or severe trauma can significantly compromise the structural integrity of skin and lead to permanent loss of skin appendages, ultimately impairing its normal physiological function. Accumulating evidence underscores the potential of targeted modulation of mechanical cues to enhance skin regeneration, promoting scarless repair by influencing the extracellular microenvironment and driving the phenotypic transitions. The field of skin repair and skin appendage regeneration has witnessed remarkable advancements in the utilization of biomaterials with distinct physical properties. However, a comprehensive understanding of the underlying mechanisms remains somewhat elusive, limiting the broader application of these innovations. In this review, we present two promising biomaterial-based mechanical approaches aimed at bolstering the regenerative capacity of compromised skin. The first approach involves leveraging biomaterials with specific biophysical properties to create an optimal scarless environment that supports cellular activities essential for regeneration. The second approach centers on harnessing mechanical forces exerted by biomaterials to enhance cellular plasticity, facilitating efficient cellular reprogramming and, consequently, promoting the regeneration of skin appendages. In summary, the manipulation of mechanical cues using biomaterial-based strategies holds significant promise as a supplementary approach for achieving scarless wound healing, coupled with the restoration of multiple skin appendage functions.
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Affiliation(s)
- Ying-Ying Li
- Research Center for Tissue Repair and Regeneration Affiliated to the Medical Innovation Research Department, Chinese PLA General Hospital and PLA Medical College; PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration; Research Unit of Trauma Care, Tissue Repair and Regeneration, Chinese Academy of Medical Sciences, 2019RU051, Beijing, 100048, China
| | - Shuai-Fei Ji
- Research Center for Tissue Repair and Regeneration Affiliated to the Medical Innovation Research Department, Chinese PLA General Hospital and PLA Medical College; PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration; Research Unit of Trauma Care, Tissue Repair and Regeneration, Chinese Academy of Medical Sciences, 2019RU051, Beijing, 100048, China
| | - Xiao-Bing Fu
- Research Center for Tissue Repair and Regeneration Affiliated to the Medical Innovation Research Department, Chinese PLA General Hospital and PLA Medical College; PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration; Research Unit of Trauma Care, Tissue Repair and Regeneration, Chinese Academy of Medical Sciences, 2019RU051, Beijing, 100048, China.
| | - Yu-Feng Jiang
- Department of Tissue Regeneration and Wound Repair, Chinese PLA General Hospital, Beijing, 100853, China.
| | - Xiao-Yan Sun
- Research Center for Tissue Repair and Regeneration Affiliated to the Medical Innovation Research Department, Chinese PLA General Hospital and PLA Medical College; PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration; Research Unit of Trauma Care, Tissue Repair and Regeneration, Chinese Academy of Medical Sciences, 2019RU051, Beijing, 100048, China.
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Chen N, Li M, Yang J, Wang P, Song G, Wang H. Slow-sculpting graphene oxide/alginate gel loaded with platelet-rich plasma to promote wound healing in rats. Front Bioeng Biotechnol 2024; 12:1334087. [PMID: 38390356 PMCID: PMC10882075 DOI: 10.3389/fbioe.2024.1334087] [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: 11/06/2023] [Accepted: 01/25/2024] [Indexed: 02/24/2024] Open
Abstract
Wounds, especially chronic wounds, have become an important problem that endangers human health. At present, there are many repair methods, and among them combines materials science and biology is one of the important repair methods. This study explored the preparation method, physicochemical properties, biological activity and safety of Platelet-Rich plasma (PRP)-loaded slow-sculpting graphene oxide (GO)/alginate gel, and applied it to acute full-thickness skin defect wounds in rats to observe its role in wound healing. The results show that the slow-sculpting GO/alginate gel has excellent plasticity and is suitable for a variety of irregularly shaped wounds. At the same time, its porous structure and water content can maintain the activity of platelets and their released growth factors in PRP, thereby promoting wound collagen synthesis and angiogenesis to accelerate wound healing. This indicates that the slow-sculpting GO/alginate gel is an excellent loading material for PRP, and the combination of the two may become one of the methods to promote wound repair.
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Affiliation(s)
- Ningjie Chen
- Shandong University, Jinan, Shandong, China
- Department of Burns and Plastic Surgery, Weihai Municipal Hospital, Weihai, China
| | - Mengjie Li
- Binzhou Medical University, Binzhou, Shandong, China
| | - Jincun Yang
- Department of Burns and Plastic Surgery, Weihai Municipal Hospital, Weihai, China
| | - Peng Wang
- Ministry of Scientific and Technological Innovation, Yantai Hi-tech Industrial Development Zone, Yantai, Shandong, China
| | - Guodong Song
- Shandong University, Jinan, Shandong, China
- Department of Burns and Orthopedic Surgery, Jinan Central Hospital, Jinan, Shandong, China
| | - Haitao Wang
- Department of Burns and Plastic Surgery, Weihai Municipal Hospital, Weihai, China
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114
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Caetano A, Sharpe P. Redefining Mucosal Inflammation with Spatial Genomics. J Dent Res 2024; 103:129-137. [PMID: 38166489 PMCID: PMC10845836 DOI: 10.1177/00220345231216114] [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] [Indexed: 01/04/2024] Open
Abstract
The human oral mucosa contains one of the most complex cellular systems that are essential for normal physiology and defense against a wide variety of local pathogens. Evolving techniques and experimental systems have helped refine our understanding of this complex cellular network. Current single-cell RNA sequencing methods can resolve subtle differences between cell types and states, thus providing a great tool for studying the molecular and cellular repertoire of the oral mucosa in health and disease. However, it requires the dissociation of tissue samples, which means that the interrelationships between cells are lost. Spatial transcriptomic methods bypass tissue dissociation and retain this spatial information, thereby allowing gene expression to be assessed across thousands of cells within the context of tissue structural organization. Here, we discuss the contribution of spatial technologies in shaping our understanding of this complex system. We consider the impact on identifying disease cellular neighborhoods and how space defines cell state. We also discuss the limitations and future directions of spatial sequencing technologies with recent advances in machine learning. Finally, we offer a perspective on open questions about mucosal homeostasis that these technologies are well placed to address.
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Affiliation(s)
- A.J. Caetano
- Centre for Oral Immunobiology and Regenerative Medicine, Barts Centre for Squamous Cancer, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, UK
| | - P.T. Sharpe
- Centre for Craniofacial and Regenerative Biology, Faculty of Dentistry, Oral and Craniofacial Sciences, King’s College London, London, UK
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115
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Chen X, Song H, Song K, Zhang Y, Wang J, Hong J, Xie Q, Zhao J, Liu M, Wang X. Temperature-sensitive hydrogel releasing pectolinarin facilitate scarless wound healing. J Cell Mol Med 2024; 28:e18130. [PMID: 38332511 PMCID: PMC10853586 DOI: 10.1111/jcmm.18130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 11/28/2023] [Accepted: 12/27/2023] [Indexed: 02/10/2024] Open
Abstract
The dressing that promotes scarless healing is essential for both normal function and aesthetics after a wound. With a deeper understanding of the mechanisms involved in scar formation during the wound healing process, the ideal dressing becomes clearer and more promising. For instance, the yes-associated transcriptional regulator (YAP) has been extensively studied as a key gene involved in regulating scar formation. However, there has been limited attention given to pectolinarin, a natural flavonoid that may exhibit strong binding affinity to YAP, in the context of scarless healing. In this study, we successfully developed a temperature-sensitive Pluronic@F-127 hydrogel as a platform for delivering pectolinarin to promote scarless wound healing. The bioactive pectolinarin was released from the hydrogel, effectively enhancing endothelial cell migration, proliferation and the expression of angiogenesis-related genes. Additionally, a concentration of 20 μg/mL of pectolinarin demonstrated remarkable antioxidant ability, capable of counteracting the detrimental effects of reactive oxygen species (ROS). Our results from rat wound healing models demonstrated that the hydrogel accelerated wound healing, promoting re-epithelialization and facilitating skin appendage regeneration. Furthermore, we discovered that a concentration of 50 μg/mL of pectolinarin incorporated to the hydrogel exhibited the most favourable outcomes in terms of promoting wound healing and minimizing scar formation. Overall, our study highlights that the significant potential of locally released pectolinarin might substantially inhibit YAP and promoting scarless wound healing.
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Affiliation(s)
- Xiaohang Chen
- Shanxi Medical University School and Hospital of StomatologyTaiyuanChina
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New MaterialsTaiyuanChina
| | - Haoyue Song
- Shanxi Medical University School and Hospital of StomatologyTaiyuanChina
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New MaterialsTaiyuanChina
| | - Kun Song
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital, Laboratory of Facial Plastic and ReconstructionFujian Medical UniversityFuzhouChina
| | - Yuan Zhang
- Shanxi Medical University School and Hospital of StomatologyTaiyuanChina
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New MaterialsTaiyuanChina
| | - Jia Wang
- Shanxi Medical University School and Hospital of StomatologyTaiyuanChina
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New MaterialsTaiyuanChina
| | - Jinjia Hong
- Shanxi Medical University School and Hospital of StomatologyTaiyuanChina
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New MaterialsTaiyuanChina
| | - Qingpeng Xie
- Shanxi Medical University School and Hospital of StomatologyTaiyuanChina
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New MaterialsTaiyuanChina
| | - Jing Zhao
- Shanxi Medical University School and Hospital of StomatologyTaiyuanChina
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New MaterialsTaiyuanChina
| | - Meixian Liu
- Shanxi Medical University School and Hospital of StomatologyTaiyuanChina
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New MaterialsTaiyuanChina
| | - Xing Wang
- Shanxi Medical University School and Hospital of StomatologyTaiyuanChina
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New MaterialsTaiyuanChina
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116
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Zhang B, Chen T. Local and systemic mechanisms that control the hair follicle stem cell niche. Nat Rev Mol Cell Biol 2024; 25:87-100. [PMID: 37903969 DOI: 10.1038/s41580-023-00662-3] [Citation(s) in RCA: 30] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/25/2023] [Indexed: 11/01/2023]
Abstract
Hair follicles are essential appendages of the mammalian skin, as hair performs vital functions of protection, thermoregulation and sensation. Hair follicles harbour exceptional regenerative abilities as they contain multiple somatic stem cell populations such as hair follicle stem cells (HFSCs) and melanocyte stem cells. Surrounding the stem cells and their progeny, diverse groups of cells and extracellular matrix proteins are organized to form a microenvironment (called 'niche') that serves to promote and maintain the optimal functioning of these stem cell populations. Recent studies have shed light on the intricate nature of the HFSC niche and its crucial role in regulating hair follicle regeneration. In this Review, we describe how the niche serves as a signalling hub, communicating, deciphering and integrating both local signals within the skin and systemic inputs from the body and environment to modulate HFSC activity. We delve into the recent advancements in identifying the cellular and molecular nature of the niche, providing a holistic perspective on its essential functions in hair follicle morphogenesis, regeneration and ageing.
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Affiliation(s)
- Bing Zhang
- School of Life Sciences, Westlake University, Hangzhou, Zhejiang, China.
- Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, Zhejiang, China.
| | - Ting Chen
- National Institute of Biological Sciences, Beijing, China.
- Tsinghua Institute of Multidisciplinary Biomedical Research, Tsinghua University, Beijing, China.
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Yang JT, Wu D, Li J, Zhao C, Zhu L, Xu C, Xu N. An Injectable Composite Hydrogel of Verteporfin-Bonded Carboxymethyl Chitosan and Oxidized Sodium Alginate Facilitates Scarless Full-Thickness Skin Regeneration. Macromol Biosci 2024; 24:e2300165. [PMID: 37681479 DOI: 10.1002/mabi.202300165] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 07/22/2023] [Indexed: 09/09/2023]
Abstract
Full-thickness skin defect has always been a major challenge in clinics due to fibrous hyperplasia in the repair process. Hydrogel composite dressings loaded with anti-fibrotic drugs have been considered as a promising strategy for scarless skin regeneration. In this work, a hydrogel composite (VP-CMCS-OSA) of carboxymethyl chitosan (CMCS) and oxidized sodium alginate (OSA), with loading anti-fibrotic drug verteporfin (VP), is developed based on two-step chemical reactions. Verteporfin is bonded with carboxymethyl chitosan through EDC/NHS treatment to form VP-CMCS, and then VP-CMCS is crosslinked with oxidized sodium alginate by Schiff base reaction to form VP-CMCS-OSA hydrogel. The characterization by SEM, FTIR, and UV-Vis shows the microstructure and chemical bonding of VP-CMCS-OSA. VP-CMCS-OSA hydrogel demonstrates the properties of high tissue adhesion, strong self-healing, and tensile ability. In the full-thickness skin defect model, the VP-CMCS-OSA composite hydrogels hasten wound healing due to the synergistic effects of hydrogels and verteporfin administration. The histological examination reveals the regular collagen arrangement and more skin appendages after VP-CMCS-OSA composite hydrogel treatment, indicating the full-thickness skin regeneration without potential scar formation. The outcomes suggest that the verteporfin-loaded composite hydrogel could be a potential method for scarless skin regeneration.
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Affiliation(s)
- Jiang-Tao Yang
- College of Life Sciences and Health, Institute of Biology and Medicine, Wuhan University of Science and Technology, Wuhan, 430065, China
| | - Dingwei Wu
- College of Life Sciences and Health, Institute of Biology and Medicine, Wuhan University of Science and Technology, Wuhan, 430065, China
| | - Jianping Li
- The State Key Laboratory of Refractories and Metallurgy, Institute of Advanced Materials and Nanotechnology, Wuhan University of Science and Technology, Wuhan, 430081, China
| | - Chenchen Zhao
- College of Life Sciences and Health, Institute of Biology and Medicine, Wuhan University of Science and Technology, Wuhan, 430065, China
| | - Lian Zhu
- College of Life Sciences and Health, Institute of Biology and Medicine, Wuhan University of Science and Technology, Wuhan, 430065, China
- School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan, 430023, China
| | - Chengchen Xu
- College of Life Sciences and Health, Institute of Biology and Medicine, Wuhan University of Science and Technology, Wuhan, 430065, China
| | - Na Xu
- College of Life Sciences and Health, Institute of Biology and Medicine, Wuhan University of Science and Technology, Wuhan, 430065, China
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He J, Fang B, Shan S, Li Q. Mechanical stiffness promotes skin fibrosis through FAPα-AKT signaling pathway. J Dermatol Sci 2024; 113:51-61. [PMID: 38155020 DOI: 10.1016/j.jdermsci.2023.12.004] [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: 06/28/2023] [Revised: 10/29/2023] [Accepted: 12/05/2023] [Indexed: 12/30/2023]
Abstract
BACKGROUND Myofibroblasts contribute to the excessive production, remodeling and cross-linking of the extracellular matrix that characterizes the progression of skin fibrosis. An important insight into the pathogenesis of tissue fibrosis has been the discovery that increased matrix stiffness during fibrosis progression is involved in myofibroblast activation. However, mechanistic basis for this phenomenon remains elusive. OBJECTIVE To explore the role of fibroblast activation protein-α (FAPα) in mechanical stiffness-induced skin fibrosis progression. METHODS RNA-seq was performed to compare differential genes of mouse dermal fibroblasts (MDFs) grown on low or high stiffness plates. This process identified FAPα, which is a membrane protein usually overexpressed in activated fibroblasts, as a suitable candidate. In vitro assay, we investigate the role of FAPα in mechanical stiffness-induced MDFs activation and downstream pathway. By establishing mouse skin fibrosis model and intradermally administrating FAPα adeno-associated virus (AAV) or a selective Fap inhibitor FAPi, we explore the role of FAPα in skin fibrosis in vivo. RESULTS We show that FAPα, a membrane protein highly expressed in myofibroblasts of skin fibrotic tissues, is regulated by increased matrix stiffness. Genetic deletion or pharmacological inhibition of FAPα significantly inhibits mechanical stiffness-induced activation of myofibroblasts in vitro. Mechanistically, FAPα promotes myofibroblast activation by stimulating the PI3K-Akt pathway. Furthermore, we showed that administration of the inhibitor FAPi or FAPα targeted knockdown ameliorated the progression of skin fibrosis. CONCLUSION Taken together, we identify FAPα as an important driver of mechanical stiffness-induced skin fibrosis and a potential therapeutic target for the treatment of skin fibrosis.
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Affiliation(s)
- Jiahao He
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Bin Fang
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| | - Shengzhou Shan
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| | - Qingfeng Li
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
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119
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Ma X, Zhao LL, Yu YC, Cheng Y. Engrailed: Pathological and physiological effects of a multifunctional developmental gene. Genesis 2024; 62:e23557. [PMID: 37830136 DOI: 10.1002/dvg.23557] [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: 06/23/2023] [Revised: 09/14/2023] [Accepted: 09/14/2023] [Indexed: 10/14/2023]
Abstract
Engrailed-1 (EN1) is a developmental gene that encodes En1, a highly conserved transcription factor involved in regionalization during early embryogenesis and in the later maintenance of normal neurons. After birth, EN1 still plays a role in the development and physiology of the body; for example, it exerts a protective effect on midbrain dopaminergic (mDA) neurons, and loss of EN1 causes mDA neurons in the ventral midbrain to gradually die approximately 6 weeks after birth, resulting in motor and nonmotor symptoms similar to those observed in Parkinson's disease. Notably, EN1 has been identified as a possible susceptibility gene for idiopathic Parkinson's disease in humans. EN1 is involved in the processes of wound-healing scar production and tissue and organ fibrosis. Additionally, EN1 can lead to tumorigenesis and thus provides a target for the treatment of some tumors. In this review, we summarize the effects of EN1 on embryonic organ development, describe the consequences of the deletion or overexpression of the EN1 gene, and discuss the pathways in which EN1 is involved. We hope to clarify the role of EN1 as a developmental gene and present potential therapeutic targets for diseases involving the EN1 gene.
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Affiliation(s)
- Xiang Ma
- Department of Ophthalmology, The Second Hospital of Jilin University, Changchun, Jilin, P.R. China
| | - Liang-Liang Zhao
- Department of Ophthalmology, The Second Hospital of Jilin University, Changchun, Jilin, P.R. China
| | - Yi-Chun Yu
- Department of Ophthalmology, The Second Hospital of Jilin University, Changchun, Jilin, P.R. China
| | - Yan Cheng
- Department of Ophthalmology, The Second Hospital of Jilin University, Changchun, Jilin, P.R. China
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120
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Lin X, Lai Y. Scarring Skin: Mechanisms and Therapies. Int J Mol Sci 2024; 25:1458. [PMID: 38338767 PMCID: PMC10855152 DOI: 10.3390/ijms25031458] [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: 12/21/2023] [Revised: 01/19/2024] [Accepted: 01/20/2024] [Indexed: 02/12/2024] Open
Abstract
Skin injury always results in fibrotic, non-functional scars in adults. Although multiple factors are well-known contributors to scar formation, the precise underlying mechanisms remain elusive. This review aims to elucidate the intricacies of the wound healing process, summarize the known factors driving skin cells in wounds toward a scarring fate, and particularly to discuss the impact of fibroblast heterogeneity on scar formation. To the end, we explore potential therapeutic interventions used in the treatment of scarring wounds.
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Affiliation(s)
- Xinye Lin
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai 200241, China;
- Shanghai Frontiers Science Center of Genome Editing and Cell Therapy, School of Life Sciences, East China Normal University, Shanghai 200241, China
| | - Yuping Lai
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai 200241, China;
- Shanghai Frontiers Science Center of Genome Editing and Cell Therapy, School of Life Sciences, East China Normal University, Shanghai 200241, China
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121
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Abbas DB, Griffin M, Fahy EJ, Spielman AF, Guardino NJ, Pu A, Lintel H, Lorenz HP, Longaker MT, Wan DC. Establishing a Xenograft Model with CD-1 Nude Mice to Study Human Skin Wound Repair. Plast Reconstr Surg 2024; 153:121-128. [PMID: 36988644 DOI: 10.1097/prs.0000000000010465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
Abstract
BACKGROUND A significant gap exists in the translatability of small-animal models to human subjects. One important factor is poor laboratory models involving human tissue. Thus, the authors have created a viable postnatal human skin xenograft model using athymic mice. METHODS Discarded human foreskins were collected following circumcision. All subcutaneous tissue was removed from these samples sterilely. Host CD-1 nude mice were then anesthetized, and dorsal skin was sterilized. A 1.2-cm-diameter, full-thickness section of dorsal skin was excised. The foreskin sample was then placed into the full-thickness defect in the host mice and sutured into place. Xenografts underwent dermal wounding using a 4-mm punch biopsy after engraftment. Xenografts were monitored for 14 days after wounding and then harvested. RESULTS At 14 days postoperatively, all mice survived the procedure. Grossly, the xenograft wounds showed formation of a human scar at postoperative day 14. Hematoxylin and eosin and Masson trichome staining confirmed scar formation in the wounded human skin. Using a novel artificial intelligence algorithm using picrosirius red staining, scar formation was confirmed in human wounded skin compared with the unwounded skin. Histologically, CD31 + immunostaining confirmed vascularization of the xenograft. The xenograft exclusively showed human collagen type I, CD26 + , and human nuclear antigen in the human scar without any staining of these human markers in the murine skin. CONCLUSION The proposed model demonstrates wound healing to be a local response from tissue resident human fibroblasts and allows for reproducible evaluation of human skin wound repair in a preclinical model. CLINICAL RELEVANCE STATEMENT Radiation-induced fibrosis is a widely prevalent clinical phenomenon without a well-defined treatment at this time. This study will help establish a small-animal model to better understand and develop novel therapeutics to treat irradiated human skin.
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Affiliation(s)
- Darren B Abbas
- From the Hagey Laboratory for Pediatric Regenerative Medicine
| | | | - Evan J Fahy
- From the Hagey Laboratory for Pediatric Regenerative Medicine
| | | | | | - Adrian Pu
- From the Hagey Laboratory for Pediatric Regenerative Medicine
| | - Hendrik Lintel
- From the Hagey Laboratory for Pediatric Regenerative Medicine
| | - H Peter Lorenz
- From the Hagey Laboratory for Pediatric Regenerative Medicine
| | - Michael T Longaker
- From the Hagey Laboratory for Pediatric Regenerative Medicine
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine
| | - Derrick C Wan
- From the Hagey Laboratory for Pediatric Regenerative Medicine
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Chang L, Du H, Xu F, Xu C, Liu H. Hydrogel-enabled mechanically active wound dressings. Trends Biotechnol 2024; 42:31-42. [PMID: 37453911 DOI: 10.1016/j.tibtech.2023.06.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 06/04/2023] [Accepted: 06/14/2023] [Indexed: 07/18/2023]
Abstract
Wound care is a major clinical and social concern. However, effective wound repair remains challenging where conventional dressings yield detrimental healing outcomes. An emerging technique, named mechanically active dressing (MAD), uses self-contractile hydrogels to mechanically contract the wound bed. MAD has shown improved healing rates with limited side effects. These promising developments in wound care call for a timely review on the development of such technology. Herein, we shed light on the mechanism underlying mechanically modulated wound healing, carry out a systematic discussion on the status quo of designing hydrogels for MAD fabrication, and conclude with perspectives on design, use and clinical translation for realizing the future goal of personalized wound care.
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Affiliation(s)
- Le Chang
- Shaanxi Provincial Key Laboratory of Infection and Immune Diseases, Shaanxi Provincial People's Hospital, Xi'an 710068, China; Shaanxi Engineering Research Center of Cell Immunology, Shaanxi Provincial People's Hospital, Xi'an 710068, China
| | - Huicong Du
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, Xi'an Jiaotong University, Xi'an 710049, China; Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an 710049, China; Department of Aesthetic, Plastic and Maxillofacial Surgery, First Affiliated Hospital, Xi'an Jiaotong University, Xi'an 710049, China
| | - Feng Xu
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, Xi'an Jiaotong University, Xi'an 710049, China; Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an 710049, China
| | - Cuixiang Xu
- Shaanxi Provincial Key Laboratory of Infection and Immune Diseases, Shaanxi Provincial People's Hospital, Xi'an 710068, China; Shaanxi Engineering Research Center of Cell Immunology, Shaanxi Provincial People's Hospital, Xi'an 710068, China.
| | - Hao Liu
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, Xi'an Jiaotong University, Xi'an 710049, China; Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an 710049, China.
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Xiang T, Guo Q, Jia L, Yin T, Huang W, Zhang X, Zhou S. Multifunctional Hydrogels for the Healing of Diabetic Wounds. Adv Healthc Mater 2024; 13:e2301885. [PMID: 37702116 DOI: 10.1002/adhm.202301885] [Citation(s) in RCA: 43] [Impact Index Per Article: 43.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 09/10/2023] [Indexed: 09/14/2023]
Abstract
The healing of diabetic wounds is hindered by various factors, including bacterial infection, macrophage dysfunction, excess proinflammatory cytokines, high levels of reactive oxygen species, and sustained hypoxia. These factors collectively impede cellular behaviors and the healing process. Consequently, this review presents intelligent hydrogels equipped with multifunctional capacities, which enable them to dynamically respond to the microenvironment and accelerate wound healing in various ways, including stimuli -responsiveness, injectable self-healing, shape -memory, and conductive and real-time monitoring properties. The relationship between the multiple functions and wound healing is also discussed. Based on the microenvironment of diabetic wounds, antibacterial, anti-inflammatory, immunomodulatory, antioxidant, and pro-angiogenic strategies are combined with multifunctional hydrogels. The application of multifunctional hydrogels in the repair of diabetic wounds is systematically discussed, aiming to provide guidelines for fabricating hydrogels for diabetic wound healing and exploring the role of intelligent hydrogels in the therapeutic processes.
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Affiliation(s)
- Tao Xiang
- Institute of Biomedical Engineering, College of Medicine, Southwest Jiaotong University, Chengdu, Sichuan, 610031, P. R. China
- Key Laboratory of Advanced Technologies of Materials Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, P. R. China
| | - Qianru Guo
- Institute of Biomedical Engineering, College of Medicine, Southwest Jiaotong University, Chengdu, Sichuan, 610031, P. R. China
- Key Laboratory of Advanced Technologies of Materials Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, P. R. China
| | - Lianghao Jia
- Institute of Biomedical Engineering, College of Medicine, Southwest Jiaotong University, Chengdu, Sichuan, 610031, P. R. China
- Key Laboratory of Advanced Technologies of Materials Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, P. R. China
| | - Tianyu Yin
- Institute of Biomedical Engineering, College of Medicine, Southwest Jiaotong University, Chengdu, Sichuan, 610031, P. R. China
- Key Laboratory of Advanced Technologies of Materials Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, P. R. China
| | - Wei Huang
- Institute of Biomedical Engineering, College of Medicine, Southwest Jiaotong University, Chengdu, Sichuan, 610031, P. R. China
- Key Laboratory of Advanced Technologies of Materials Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, P. R. China
| | - Xinyu Zhang
- Institute of Biomedical Engineering, College of Medicine, Southwest Jiaotong University, Chengdu, Sichuan, 610031, P. R. China
- Key Laboratory of Advanced Technologies of Materials Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, P. R. China
| | - Shaobing Zhou
- Institute of Biomedical Engineering, College of Medicine, Southwest Jiaotong University, Chengdu, Sichuan, 610031, P. R. China
- Key Laboratory of Advanced Technologies of Materials Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, P. R. China
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Xiong Y, Feng Q, Lu L, Qiu X, Knoedler S, Panayi AC, Jiang D, Rinkevich Y, Lin Z, Mi B, Liu G, Zhao Y. Metal-Organic Frameworks and Their Composites for Chronic Wound Healing: From Bench to Bedside. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2302587. [PMID: 37527058 DOI: 10.1002/adma.202302587] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 07/28/2023] [Indexed: 08/03/2023]
Abstract
Chronic wounds are characterized by delayed and dysregulated healing processes. As such, they have emerged as an increasingly significant threat. The associated morbidity and socioeconomic toll are clinically and financially challenging, necessitating novel approaches in the management of chronic wounds. Metal-organic frameworks (MOFs) are an innovative type of porous coordination polymers, with low toxicity and high eco-friendliness. Documented anti-bacterial effects and pro-angiogenic activity predestine these nanomaterials as promising systems for the treatment of chronic wounds. In this context, the therapeutic applicability and efficacy of MOFs remain to be elucidated. It is, therefore, reviewed the structural-functional properties of MOFs and their composite materials and discusses how their multifunctionality and customizability can be leveraged as a clinical therapy for chronic wounds.
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Affiliation(s)
- Yuan Xiong
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, 430022, China
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
- Department of Stomatology, Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, 430022, China
| | - Qian Feng
- Key Laboratory of Biorheological Science and Technology, Ministry of Education College of Bioengineering, Chongqing University, Chongqing, 400044, China
| | - Li Lu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, 430022, China
- Department of Stomatology, Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, 430022, China
| | - Xingan Qiu
- Department of Orthopedics, Chongqing University Three Gorges Hospital, Chongqing, 404000, China
| | - Samuel Knoedler
- Division of Plastic Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02152, USA
- Institute of Regenerative Biology and Medicine, Helmholtz Zentrum München, Max-Lebsche-Platz 31, 81377, Munich, Germany
| | - Adriana Christine Panayi
- Division of Plastic Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02152, USA
- Department of Hand, Plastic and Reconstructive Surgery, Microsurgery, Burn Center, BG Trauma Center Ludwigshafen, University of Heidelberg, Ludwig-Guttmann-Strasse 13, 67071, Ludwigshafen/Rhine, Germany
| | - Dongsheng Jiang
- Institute of Regenerative Biology and Medicine, Helmholtz Zentrum München, Max-Lebsche-Platz 31, 81377, Munich, Germany
| | - Yuval Rinkevich
- Institute of Regenerative Biology and Medicine, Helmholtz Zentrum München, Max-Lebsche-Platz 31, 81377, Munich, Germany
| | - Ze Lin
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, 430022, China
- Department of Stomatology, Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, 430022, China
| | - Bobin Mi
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, 430022, China
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
- Department of Stomatology, Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, 430022, China
| | - Guohui Liu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, 430022, China
- Department of Stomatology, Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, 430022, China
| | - Yanli Zhao
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
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Yampolsky M, Bachelet I, Fuchs Y. Reproducible strategy for excisional skin-wound-healing studies in mice. Nat Protoc 2024; 19:184-206. [PMID: 38030941 DOI: 10.1038/s41596-023-00899-4] [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: 02/15/2023] [Accepted: 07/28/2023] [Indexed: 12/01/2023]
Abstract
Wound healing is a complex physiological process involving various cell types and signaling pathways. The capability to observe the dynamics of wound repair offers valuable insights into the effects of genetic modifications, pharmaceutical interventions or other experimental manipulations on the skin-repair process. Here, we provide a comprehensive protocol for a full-thickness, excisional skin-wound-healing assay in mice, which can easily be performed by any scientist who has received an animal welfare course certificate and can be completed within ~3 h, depending on the number of animals. Crucially, we highlight the importance of considering key aspects of the assay that can dramatically contribute to the reliability and reproducibility of these experiments. We thoroughly discuss the experimental design, necessary preparations, wounding technique and analysis. In addition, we discuss the use of lineage-tracing techniques to monitor cell migration, differentiation and the contribution of different cell populations to the repair process. Overall, we explore key aspects of the skin-wound-healing assay, supplying a detailed procedure and guidelines essential for decreasing variability and obtaining reliable and reproducible results.
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126
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Wang L, Tang L, Zhou L, Lai Y, Li H, Wang X, Liu X. Identification of CGNL1 as a diagnostic marker in fibroblasts of diabetic foot ulcers: Insights from single cell RNA sequencing and bulk sequencing data. Int J Immunopathol Pharmacol 2024; 38:3946320241265945. [PMID: 39102374 DOI: 10.1177/03946320241265945] [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: 08/07/2024] Open
Abstract
OBJECTIVES This study aimed to explore the unique transcriptional feature of fibroblasts subtypes and the role of ferroptosis in diabetic foot ulcers (DFUs). METHODS The GEO (Gene Expression Omnibus) was searched to obtain the DFUs single-cell and transcriptional datasets. After identifying cell types by classic marker genes, the integrated single-cell dataset was used to run trajectory inference, RNA velocity, and ligand-receptor interaction analysis. Next, bulk RNA-seq datasets of DFUs were analyzed to the key ferroptosis genes. RESULTS Here, we profile 83529 single transcriptomes from the foot samples utilizing single-cell sequencing (scRNA-seq) data of DFU from GEO database and identified 12 cell types, with fibroblasts exhibiting elevated levels of ferroptosis activity and substantial cellular heterogeneity. Our results defined six main fibroblast subsets that showed mesenchymal, secretory-reticular, secretory-papillary, pro-inflammatory, myogenesis, and healing-enriched functional annotations. Trajectory inference and cell-cell communication analysis revealed two major cell fates with subpopulations of fibroblasts and altered ligand-receptor interactions. Bulk RNA sequencing data identified CGNL1 as a distinctive diagnostic signature in fibroblasts. Notably, CGNL1 positively correlated with pro-inflammatory fibroblasts. CONCLUSIONS Overall, our analysis delineated the heterogeneity present in cell populations of DFUs, showing distinct fibroblast subtypes characterized by their own unique transcriptional features and enrichment functions. Our study will help us better understand DFUs pathogenesis and identifies CGNL1 as a potential target for DFUs therapies.
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Affiliation(s)
- Li Wang
- Research Centre of Basic Intergrative Medicine, School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Lulu Tang
- The First College of Clinical Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China
- First Affiliated Hospital of Guangzhou University of Chinese Medicine, Ghangzhou, China
| | - Lingna Zhou
- First Affiliated Hospital of Guangzhou University of Chinese Medicine, Ghangzhou, China
| | - Yingtao Lai
- First Affiliated Hospital of Guangzhou University of Chinese Medicine, Ghangzhou, China
| | - Hui Li
- Research Centre of Basic Intergrative Medicine, School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Xiaojun Wang
- First Affiliated Hospital of Guangzhou University of Chinese Medicine, Ghangzhou, China
| | - Xiaoyi Liu
- Research Centre of Basic Intergrative Medicine, School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
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Melchionna R, Trono P, Di Carlo A, Di Modugno F, Nisticò P. Transcription factors in fibroblast plasticity and CAF heterogeneity. J Exp Clin Cancer Res 2023; 42:347. [PMID: 38124183 PMCID: PMC10731891 DOI: 10.1186/s13046-023-02934-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 12/13/2023] [Indexed: 12/23/2023] Open
Abstract
In recent years, research focused on the multifaceted landscape and functions of cancer-associated fibroblasts (CAFs) aimed to reveal their heterogeneity and identify commonalities across diverse tumors for more effective therapeutic targeting of pro-tumoral stromal microenvironment. However, a unified functional categorization of CAF subsets remains elusive, posing challenges for the development of targeted CAF therapies in clinical settings.The CAF phenotype arises from a complex interplay of signals within the tumor microenvironment, where transcription factors serve as central mediators of various cellular pathways. Recent advances in single-cell RNA sequencing technology have emphasized the role of transcription factors in the conversion of normal fibroblasts to distinct CAF subtypes across various cancer types.This review provides a comprehensive overview of the specific roles of transcription factor networks in shaping CAF heterogeneity, plasticity, and functionality. Beginning with their influence on fibroblast homeostasis and reprogramming during wound healing and fibrosis, it delves into the emerging insights into transcription factor regulatory networks. Understanding these mechanisms not only enables a more precise characterization of CAF subsets but also sheds light on the early regulatory processes governing CAF heterogeneity and functionality. Ultimately, this knowledge may unveil novel therapeutic targets for cancer treatment, addressing the existing challenges of stromal-targeted therapies.
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Affiliation(s)
- Roberta Melchionna
- Tumor Immunology and Immunotherapy Unit, IRCCS-Regina Elena National Cancer Institute, Rome, Italy.
| | - Paola Trono
- Tumor Immunology and Immunotherapy Unit, IRCCS-Regina Elena National Cancer Institute, Rome, Italy
- Institute of Biochemistry and Cell Biology (IBBC), National Research Council (CNR), Rome, Italy
| | - Anna Di Carlo
- Tumor Immunology and Immunotherapy Unit, IRCCS-Regina Elena National Cancer Institute, Rome, Italy
| | - Francesca Di Modugno
- Tumor Immunology and Immunotherapy Unit, IRCCS-Regina Elena National Cancer Institute, Rome, Italy
| | - Paola Nisticò
- Tumor Immunology and Immunotherapy Unit, IRCCS-Regina Elena National Cancer Institute, Rome, Italy
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Meng S, Hu H, Qiao Y, Wang F, Zhang BN, Sun D, Zhou L, Zhao L, Xie L, Zhang H, Zhou Q. A Versatile Hydrogel with Antibacterial and Sequential Drug-Releasing Capability for the Programmable Healing of Infectious Keratitis. ACS NANO 2023; 17:24055-24069. [PMID: 38044579 DOI: 10.1021/acsnano.3c09034] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2023]
Abstract
Hydrogels have attracted tremendous attention as favorable corneal substitutes for treating severe infectious keratitis (IK). However, current hydrogel-based corneal substitutes were majorly designed to promote the single stage of corneal regeneration, which falls short in meeting the clinical management needs of severe IK including the multiple phases of corneal wound healing. Herein, we introduce a versatile hybrid hydrogel (SQPV) composed of silk fibroin and chitosan, which exhibits spatiotemporal properties for drug release. The SQPV is fabricated by incorporating verteporfin-loaded poly(lactic-co-glycolic)-polyethylene glycol-o-nitrobenzene micelles into a hydrogel network, which is formed from methacrylate silk fibroin and glycidyl methacrylate functionalized quaternized chitosan containing polydeoxyribonucleotide. This double network approach results in a material with exceptional anti-inflammatory, antibacterial, and proliferative stimulation and tissue remodeling regulation capabilities. Furthermore, SQPV showcases mechanical strength and transparency akin to those of native cornea. Extensive in vitro and in vivo studies validate SQPV's ability to effectively eliminate residual bacteria, mitigate inflammation, foster regeneration of corneal epithelium and stroma, prevent corneal scarring, and ultimately expedite wound healing. In summary, the SF/CS-based hybrid hydrogel may represent a promising substitute for comprehensive corneal repair and regeneration in severe IK.
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Affiliation(s)
- Shuqin Meng
- Eye Institute of Shandong First Medical University, State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Qingdao 266071, P.R. China
| | - Hao Hu
- Institute of Biomedical Materials and Engineering, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, P.R. China
| | - Yujie Qiao
- Eye Institute of Shandong First Medical University, State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Qingdao 266071, P.R. China
| | - Fuyan Wang
- Eye Institute of Shandong First Medical University, State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Qingdao 266071, P.R. China
| | - Bi Ning Zhang
- Eye Institute of Shandong First Medical University, State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Qingdao 266071, P.R. China
| | - Difang Sun
- Eye Institute of Shandong First Medical University, State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Qingdao 266071, P.R. China
| | - Longfang Zhou
- Eye Institute of Shandong First Medical University, State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Qingdao 266071, P.R. China
| | - Long Zhao
- Eye Institute of Shandong First Medical University, State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Qingdao 266071, P.R. China
| | - Lixin Xie
- Eye Institute of Shandong First Medical University, State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Qingdao 266071, P.R. China
| | - Hengrui Zhang
- Eye Institute of Shandong First Medical University, State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Qingdao 266071, P.R. China
| | - Qingjun Zhou
- Eye Institute of Shandong First Medical University, State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Qingdao 266071, P.R. China
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129
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Zheng Q, Ye N, Bao P, Wang T, Ma C, Chu M, Wu X, Kong S, Guo X, Liang C, Pan H, Yan P. Interpretation of the Yak Skin Single-Cell Transcriptome Landscape. Animals (Basel) 2023; 13:3818. [PMID: 38136855 PMCID: PMC10741061 DOI: 10.3390/ani13243818] [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: 11/02/2023] [Revised: 12/05/2023] [Accepted: 12/07/2023] [Indexed: 12/24/2023] Open
Abstract
The morphogenesis of hair follicle structure is accompanied by the differentiation of skin tissue. Mammalian coats are produced by hair follicles. The formation of hair follicles requires signal transmission between the epidermis and dermis. However, knowledge of the transcriptional regulatory mechanism is still lacking. We used single-cell RNA sequencing to obtain 26,573 single cells from the scapular skin of yaks at hair follicle telogen and anagen stages. With the help of known reference marker genes, 11 main cell types were identified. In addition, we further analyzed the DP cell and dermal fibroblast lineages, drew a single-cell map of the DP cell and dermal fibroblast lineages, and elaborated the key genes, signals, and functions involved in cell fate decision making. The results of this study provide a very valuable resource for the analysis of the heterogeneity of DP cells and dermal fibroblasts in the skin and provide a powerful theoretical reference for further exploring the diversity of hair follicle cell types and hair follicle morphogenesis.
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Affiliation(s)
- Qingbo Zheng
- Key Laboratory of Animal Genetics and Breeding on Tibetan Plateau, Ministry of Agriculture and Rural Affairs, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou 730050, China; (Q.Z.); (N.Y.); (P.B.); (T.W.); (C.M.); (M.C.); (X.W.); (X.G.); (C.L.)
- Key Laboratory of Yak Breeding Engineering of Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou 730050, China
| | - Na Ye
- Key Laboratory of Animal Genetics and Breeding on Tibetan Plateau, Ministry of Agriculture and Rural Affairs, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou 730050, China; (Q.Z.); (N.Y.); (P.B.); (T.W.); (C.M.); (M.C.); (X.W.); (X.G.); (C.L.)
- Key Laboratory of Yak Breeding Engineering of Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou 730050, China
| | - Pengjia Bao
- Key Laboratory of Animal Genetics and Breeding on Tibetan Plateau, Ministry of Agriculture and Rural Affairs, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou 730050, China; (Q.Z.); (N.Y.); (P.B.); (T.W.); (C.M.); (M.C.); (X.W.); (X.G.); (C.L.)
- Key Laboratory of Yak Breeding Engineering of Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou 730050, China
| | - Tong Wang
- Key Laboratory of Animal Genetics and Breeding on Tibetan Plateau, Ministry of Agriculture and Rural Affairs, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou 730050, China; (Q.Z.); (N.Y.); (P.B.); (T.W.); (C.M.); (M.C.); (X.W.); (X.G.); (C.L.)
- Key Laboratory of Yak Breeding Engineering of Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou 730050, China
| | - Chaofan Ma
- Key Laboratory of Animal Genetics and Breeding on Tibetan Plateau, Ministry of Agriculture and Rural Affairs, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou 730050, China; (Q.Z.); (N.Y.); (P.B.); (T.W.); (C.M.); (M.C.); (X.W.); (X.G.); (C.L.)
- Key Laboratory of Yak Breeding Engineering of Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou 730050, China
| | - Min Chu
- Key Laboratory of Animal Genetics and Breeding on Tibetan Plateau, Ministry of Agriculture and Rural Affairs, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou 730050, China; (Q.Z.); (N.Y.); (P.B.); (T.W.); (C.M.); (M.C.); (X.W.); (X.G.); (C.L.)
- Key Laboratory of Yak Breeding Engineering of Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou 730050, China
| | - Xiaoyun Wu
- Key Laboratory of Animal Genetics and Breeding on Tibetan Plateau, Ministry of Agriculture and Rural Affairs, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou 730050, China; (Q.Z.); (N.Y.); (P.B.); (T.W.); (C.M.); (M.C.); (X.W.); (X.G.); (C.L.)
- Key Laboratory of Yak Breeding Engineering of Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou 730050, China
| | - Siyuan Kong
- Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China;
| | - Xian Guo
- Key Laboratory of Animal Genetics and Breeding on Tibetan Plateau, Ministry of Agriculture and Rural Affairs, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou 730050, China; (Q.Z.); (N.Y.); (P.B.); (T.W.); (C.M.); (M.C.); (X.W.); (X.G.); (C.L.)
- Key Laboratory of Yak Breeding Engineering of Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou 730050, China
| | - Chunnian Liang
- Key Laboratory of Animal Genetics and Breeding on Tibetan Plateau, Ministry of Agriculture and Rural Affairs, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou 730050, China; (Q.Z.); (N.Y.); (P.B.); (T.W.); (C.M.); (M.C.); (X.W.); (X.G.); (C.L.)
- Key Laboratory of Yak Breeding Engineering of Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou 730050, China
| | - Heping Pan
- Life Science and Engineering College, Northwest Minzu University, Lanzhou 730030, China
| | - Ping Yan
- Key Laboratory of Animal Genetics and Breeding on Tibetan Plateau, Ministry of Agriculture and Rural Affairs, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou 730050, China; (Q.Z.); (N.Y.); (P.B.); (T.W.); (C.M.); (M.C.); (X.W.); (X.G.); (C.L.)
- Key Laboratory of Yak Breeding Engineering of Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou 730050, China
- Institute of Western Agriculture, The Chinese Academy of Agricultural Sciences, Changji 831100, China
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Zhou Y, Lv W, Peng X, Cheng Y, Tu Y, Song G, Luo Q. Simulated microgravity attenuates skin wound healing by inhibiting dermal fibroblast migration via F-actin/YAP signaling pathway. J Cell Physiol 2023; 238:2751-2764. [PMID: 37795566 DOI: 10.1002/jcp.31126] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 08/31/2023] [Accepted: 09/08/2023] [Indexed: 10/06/2023]
Abstract
Skin and its cell components continuously subject to extrinsic and intrinsic mechanical forces and are mechanical sensitive. Disturbed mechanical homeostasis may lead to changes in skin functions. Gravity is the integral mechanical force on the earth, however, how gravity contributes to the maintenance of skin function and how microgravity in space affects the wound healing are poorly understood. Here, using microgravity analogs, we show that simulated microgravity (SMG) inhibits the healing of cutaneous wound and the accumulation of dermal fibroblasts in the wound bed. In vitro, SMG inhibits the migration of human foreskin fibroblast cells (HFF-1), and decreases the F-actin polymerization and YAP (yes-associated protein) activity. The SMG-inhibited migration can be recovered by activating YAP or F-actin polymerization using lysophosphatidic acid (LPA) or jasplakinolide (Jasp), suggesting the involvement of F-actin/YAP signaling pathway in this process. In SMG rats, LPA treatment improves the cutaneous healing with increased dermal fibroblasts in the wound bed. Together, our results demonstrate that SMG attenuates the cutaneous wound healing by inhibiting dermal fibroblast migration, and propose the crucial role of F-actin/YAP mechano-transduction in the maintenance of skin homeostasis under normal gravity, and YAP as a possible therapeutic target for the skin care of astronauts in space.
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Affiliation(s)
- Yuhao Zhou
- Key Laboratory of Biorheological Science and Technology, College of Bioengineering, Ministry of Education, Chongqing University, Chongqing, China
| | - Wenjun Lv
- Key Laboratory of Biorheological Science and Technology, College of Bioengineering, Ministry of Education, Chongqing University, Chongqing, China
| | - Xiufen Peng
- Key Laboratory of Biorheological Science and Technology, College of Bioengineering, Ministry of Education, Chongqing University, Chongqing, China
| | - Yansiwei Cheng
- Key Laboratory of Biorheological Science and Technology, College of Bioengineering, Ministry of Education, Chongqing University, Chongqing, China
| | - Yun Tu
- Key Laboratory of Biorheological Science and Technology, College of Bioengineering, Ministry of Education, Chongqing University, Chongqing, China
| | - Guanbin Song
- Key Laboratory of Biorheological Science and Technology, College of Bioengineering, Ministry of Education, Chongqing University, Chongqing, China
| | - Qing Luo
- Key Laboratory of Biorheological Science and Technology, College of Bioengineering, Ministry of Education, Chongqing University, Chongqing, China
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Liang NE, Griffin MF, Berry CE, Parker JB, Downer MA, Wan DC, Longaker MT. Attenuating Chronic Fibrosis: Decreasing Foreign Body Response with Acellular Dermal Matrix. TISSUE ENGINEERING. PART B, REVIEWS 2023; 29:671-680. [PMID: 37212342 DOI: 10.1089/ten.teb.2023.0060] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Surgical implants are increasingly used across multiple medical disciplines, with applications ranging from tissue reconstruction to improving compromised organ and limb function. Despite their significant potential for improving health and quality of life, biomaterial implant function is severely limited by the body's immune response to its presence: this is known as the foreign body response (FBR) and is characterized by chronic inflammation and fibrotic capsule formation. This response can result in life-threatening sequelae such as implant malfunction, superimposed infection, and associated vessel thrombosis, in addition to soft tissue disfigurement. Patients may require frequent medical visits, as well as repeated invasive procedures, increasing the burden on an already strained health care system. Currently, the FBR and the cells and molecular mechanisms that mediate it are poorly understood. With applications across a wide array of surgical specialties, acellular dermal matrix (ADM) has emerged as a potential solution to the fibrotic reaction seen with FBR. Although the mechanisms by which ADM decreases chronic fibrosis remain to be clearly characterized, animal studies across diverse surgical models point to its biomimetic properties that facilitate decreased periprosthetic inflammation and improved host cell incorporation. Impact Statement Foreign body response (FBR) is a significant limitation to the use of implantable biomaterials. Acellular dermal matrix (ADM) has been observed to decrease the fibrotic reaction seen with FBR, although its mechanistic details are poorly understood. This review is dedicated to summarizing the primary literature on the biology of FBR in the context of ADM use, using surgical models in breast reconstruction, abdominal and chest wall repair, and pelvic reconstruction. This article will provide readers with an overarching review of shared mechanisms for ADM across multiple surgical models and diverse anatomical applications.
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Affiliation(s)
- Norah E Liang
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, California, USA
| | - Michelle F Griffin
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, California, USA
| | - Charlotte E Berry
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, California, USA
| | - Jennifer B Parker
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, California, USA
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, California, USA
| | - Mauricio A Downer
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, California, USA
| | - Derrick C Wan
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, California, USA
| | - Michael T Longaker
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, California, USA
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, California, USA
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Jiao Y, Li X, Liu X, Li C, Yang X, Sun X, Wang F, Wang L. Cobweb-Inspired Micro/Nanostructured Scaffolds for Soft Tissue Regeneration with Inhibition Effect of Fibrosis under Dynamic Environment. Adv Healthc Mater 2023; 12:e2300997. [PMID: 37713107 DOI: 10.1002/adhm.202300997] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 08/08/2023] [Indexed: 09/16/2023]
Abstract
In soft tissue repair, fibrosis can lead to repair failure and long-term chronic pain in patients. Excessive mechanical stimulation of fibroblasts is one of the causes of fibrosis during abdominal wall regeneration. Inspired by the cobweb, a polycaprolactone beaded fiber is prepared by electrospinning. The cobweb-inspired structure attenuates the mechanical stimulation of cells under a dynamic environment. Nano-protrusions are introduced into the scaffold for further inhibition of fibrosis by self-induced crystallization. A machine is built for in vitro dynamic culture and rat abdominal subcutaneous embedding experiments are performed to verify the inhibiting effect of fibrosis in a dynamic environment in vivo. Results show that the expression of integrin β1 and α-smooth muscle actin is inhibited by the cobweb-inspired structure under dynamic culture. The results of hematoxylin and eosin and Masson's trichrome indicate that the cobweb-inspired structure has a good inhibitory effect on fibrosis in a dynamic environment in vivo. In general, the cobweb-inspired scaffold with nano-protrusions has a good ability to inhibit fibrosis under both static and dynamic environments. It is believed that the scaffold has promising applications in the field of inhibiting fibrosis caused by mechanical stimulation.
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Affiliation(s)
- Yongjie Jiao
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai, 201620, China
- Key Laboratory of Textile Industry for Biomedical Textile Materials and Technology, Donghua University, Shanghai, 201620, China
| | - Xiaojing Li
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai, 201620, China
| | - Xingxing Liu
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai, 201620, China
- Key Laboratory of Textile Industry for Biomedical Textile Materials and Technology, Donghua University, Shanghai, 201620, China
| | - Chaojing Li
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai, 201620, China
- Key Laboratory of Textile Industry for Biomedical Textile Materials and Technology, Donghua University, Shanghai, 201620, China
| | - Xiao Yang
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai, 201620, China
| | - Xuwei Sun
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai, 201620, China
| | - Fujun Wang
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai, 201620, China
| | - Lu Wang
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai, 201620, China
- Key Laboratory of Textile Industry for Biomedical Textile Materials and Technology, Donghua University, Shanghai, 201620, China
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133
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Mascharak S, Guo JL, Foster DS, Khan A, Davitt MF, Nguyen AT, Burcham AR, Chinta MS, Guardino NJ, Griffin M, Lopez DM, Miller E, Januszyk M, Raghavan SS, Longacre TA, Delitto DJ, Norton JA, Longaker MT. Desmoplastic stromal signatures predict patient outcomes in pancreatic ductal adenocarcinoma. Cell Rep Med 2023; 4:101248. [PMID: 37865092 PMCID: PMC10694604 DOI: 10.1016/j.xcrm.2023.101248] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 09/01/2023] [Accepted: 09/26/2023] [Indexed: 10/23/2023]
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is projected to become the second leading cause of cancer-related death. Hallmarks include desmoplasia with variable extracellular matrix (ECM) architecture and a complex microenvironment with spatially defined tumor, stromal, and immune populations. Nevertheless, the role of desmoplastic spatial organization in patient/tumor variability remains underexplored, which we elucidate using two technologies. First, we quantify ECM patterning in 437 patients, revealing architectures associated with disease-free and overall survival. Second, we spatially profile the cellular milieu of 78 specimens using codetection by indexing, identifying an axis of pro-inflammatory cell interactions predictive of poorer outcomes. We discover that clinical characteristics, including neoadjuvant chemotherapy status, tumor stage, and ECM architecture, correlate with differential stromal-immune organization, including fibroblast subtypes with distinct niches. Lastly, we define unified signatures that predict survival with areas under the receiver operating characteristic curve (AUCs) of 0.872-0.903, differentiating survivorship by 655 days. Overall, our findings establish matrix ultrastructural and cellular organizations of fibrosis linked to poorer outcomes.
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Affiliation(s)
- Shamik Mascharak
- Hagey Laboratory of Pediatric Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Jason L Guo
- Hagey Laboratory of Pediatric Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Deshka S Foster
- Hagey Laboratory of Pediatric Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Anum Khan
- Cell Sciences Imaging Facility, Stanford University, Stanford, CA 94305, USA
| | - Michael F Davitt
- Hagey Laboratory of Pediatric Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Alan T Nguyen
- Hagey Laboratory of Pediatric Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Austin R Burcham
- Hagey Laboratory of Pediatric Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Malini S Chinta
- Hagey Laboratory of Pediatric Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Nicholas J Guardino
- Hagey Laboratory of Pediatric Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Michelle Griffin
- Hagey Laboratory of Pediatric Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - David M Lopez
- Hagey Laboratory of Pediatric Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Elisabeth Miller
- Department of Pathology, University of Virginia School of Medicine, Charlottesville, VA 22903, USA
| | - Michael Januszyk
- Hagey Laboratory of Pediatric Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Shyam S Raghavan
- Department of Pathology, University of Virginia School of Medicine, Charlottesville, VA 22903, USA
| | - Teri A Longacre
- Department of Pathology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Daniel J Delitto
- Hagey Laboratory of Pediatric Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Jeffrey A Norton
- Hagey Laboratory of Pediatric Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA.
| | - Michael T Longaker
- Hagey Laboratory of Pediatric Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA.
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134
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Berry CE, Longaker MT, Wan DC. Commentary on: Postoperative Mechanomodulation Decreases T-Junction Dehiscence After Reduction Mammaplasty: Early Scar Analysis From a Randomized Controlled Trial. Aesthet Surg J 2023; 43:NP1049-NP1051. [PMID: 37625787 DOI: 10.1093/asj/sjad281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2023] [Accepted: 08/21/2023] [Indexed: 08/27/2023] Open
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135
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Chen FZ, Tan PC, Yang Z, Li Q, Zhou SB. Identifying characteristics of dermal fibroblasts in skin homeostasis and disease. Clin Exp Dermatol 2023; 48:1317-1327. [PMID: 37566911 DOI: 10.1093/ced/llad257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 07/11/2023] [Accepted: 07/21/2023] [Indexed: 08/13/2023]
Abstract
Heterogeneous dermal fibroblasts are the main components that constitute the dermis. Distinct fibroblast subgroups show specific characteristics and functional plasticity that determine dermal structure during skin development and wound healing. Although researchers have described the roles of fibroblast subsets, this is not completely understood. We review recent evidence supporting understanding about the heterogeneity of fibroblasts. We summarize the origins and the identified profiles of fibroblast subpopulations. The characteristics of fibroblast subpopulations in both healthy and diseased states are highlighted, and the potential of subpopulations to be involved in wound healing in different ways was discussed. Additionally, we review the plasticity of subpopulations and the underlying signalling mechanisms. This review may provide greater insights into potential novel therapeutic targets and tissue regeneration strategies for the future.
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Affiliation(s)
- Fang-Zhou Chen
- Department of Plastic & Reconstructive Surgery, Shanghai Jiao Tong University School of Medicine Affiliated Ninth People's Hospital, Shanghai, China
| | - Poh-Ching Tan
- Department of Plastic & Reconstructive Surgery, Shanghai Jiao Tong University School of Medicine Affiliated Ninth People's Hospital, Shanghai, China
| | - Zihan Yang
- Department of Plastic & Reconstructive Surgery, Shanghai Jiao Tong University School of Medicine Affiliated Ninth People's Hospital, Shanghai, China
- Department of Plastic and Burn Surgery, West China Hospital of Sichuan University, Chengdu, China
| | - Qingfeng Li
- Department of Plastic & Reconstructive Surgery, Shanghai Jiao Tong University School of Medicine Affiliated Ninth People's Hospital, Shanghai, China
| | - Shuang-Bai Zhou
- Department of Plastic & Reconstructive Surgery, Shanghai Jiao Tong University School of Medicine Affiliated Ninth People's Hospital, Shanghai, China
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136
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Dudaryeva OY, Bernhard S, Tibbitt MW, Labouesse C. Implications of Cellular Mechanical Memory in Bioengineering. ACS Biomater Sci Eng 2023; 9:5985-5998. [PMID: 37797187 PMCID: PMC10646820 DOI: 10.1021/acsbiomaterials.3c01007] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/07/2023]
Abstract
The ability to maintain and differentiate cells in vitro is critical to many advances in the field of bioengineering. However, on traditional, stiff (E ≈ GPa) culture substrates, cells are subjected to sustained mechanical stress that can lead to phenotypic changes. Such changes may remain even after transferring the cells to another scaffold or engrafting them in vivo and bias the outcomes of the biological investigation or clinical treatment. This persistence─or mechanical memory─was initially observed for sustained myofibroblast activation of pulmonary fibroblasts after culturing them on stiff (E ≈ 100 kPa) substrates. Aspects of mechanical memory have now been described in many in vitro contexts. In this Review, we discuss the stiffness-induced effectors of mechanical memory: structural changes in the cytoskeleton and activity of transcription factors and epigenetic modifiers. We then focus on how mechanical memory impacts cell expansion and tissue regeneration outcomes in bioengineering applications relying on prolonged 2D plastic culture, such as stem cell therapies and disease models. We propose that alternatives to traditional cell culture substrates can be used to mitigate or erase mechanical memory and improve the efficiency of downstream cell-based bioengineering applications.
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Affiliation(s)
- Oksana Y Dudaryeva
- Macromolecular Engineering Laboratory, Department of Mechanical and Process Engineering, ETH Zurich, Zurich 8092, Switzerland
- Department of Orthopedics, University Medical Center Utrecht, Utrecht 3584, Netherlands
| | - Stéphane Bernhard
- Macromolecular Engineering Laboratory, Department of Mechanical and Process Engineering, ETH Zurich, Zurich 8092, Switzerland
| | - Mark W Tibbitt
- Macromolecular Engineering Laboratory, Department of Mechanical and Process Engineering, ETH Zurich, Zurich 8092, Switzerland
| | - Céline Labouesse
- Macromolecular Engineering Laboratory, Department of Mechanical and Process Engineering, ETH Zurich, Zurich 8092, Switzerland
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137
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Zhang G, Wang D, Ren J, Li J, Guo Q, Shi L, Li C. Antler stem cell-derived exosomes promote regenerative wound healing via fibroblast-to-myofibroblast transition inhibition. J Biol Eng 2023; 17:67. [PMID: 37940994 PMCID: PMC10633995 DOI: 10.1186/s13036-023-00386-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Accepted: 10/23/2023] [Indexed: 11/10/2023] Open
Abstract
INTRODUCTION The typical outcome of mammalian wound healing is scarring, a fibrotic process mediated by myofibroblast aggregation. Perfect healing in a clinical setting is relatively unexplored. Surprisingly, our previous studies have shown that the large wound (10 cm diameter or more) of the pedicle of deer naturally achieves regenerative restoration, realized through a paracrine pathway from adjacent antler stem cells (AnSCs). METHODS AnSC-derived exosomes (AnSC-exos) were topically injected around the full-thickness wounds in a rat model. The effects on the rate of wound healing and the quality of healing were evaluated via morphological, histological, and molecular biological techniques on days 14 and 28 after surgery. RESULTS The results showed that AnSC-exos significantly accelerated the rate of wound healing and improved healing quality, including regeneration of cutaneous appendages (hair follicles and sebaceous glands) and the distribution pattern of collagen (basket-weave-like) in the healed skin. These effects of AnSC-exos were comparable to those of AnSCs but were significantly more potent than those of exosomes derived from bone marrow mesenchymal stem cells (bMSC-exos). Furthermore, AnSC-exos treatment effectively inhibited fibroblast-to-myofibroblast transition (FMT), as evidenced by the reduction of full-thickness skin injury-induced FMT in vivo and TGF-β1-induced FMT in vitro. CONCLUSION AnSC-exos could effectively promote regenerative cutaneous wound healing, highly likely through FMT inhibition. This suggests that AnSC-exos treatment could provide the potential for a novel approach to induce regenerative wound healing in the clinical setting.
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Affiliation(s)
- Guokun Zhang
- Institute of Antler Science and Product Technology, Changchun Sci-Tech University, No. 1345 of Pudong Rd., Changchun, Jilin, 130600, China
| | - Dongxu Wang
- Institute of Antler Science and Product Technology, Changchun Sci-Tech University, No. 1345 of Pudong Rd., Changchun, Jilin, 130600, China
| | - Jing Ren
- Institute of Antler Science and Product Technology, Changchun Sci-Tech University, No. 1345 of Pudong Rd., Changchun, Jilin, 130600, China
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun, 130118, China
| | - Jiping Li
- Institute of Antler Science and Product Technology, Changchun Sci-Tech University, No. 1345 of Pudong Rd., Changchun, Jilin, 130600, China
| | - Qianqian Guo
- Institute of Antler Science and Product Technology, Changchun Sci-Tech University, No. 1345 of Pudong Rd., Changchun, Jilin, 130600, China
| | - Liyan Shi
- China-Japan Union Hospital, Jilin University, Changchun, 130033, China
| | - Chunyi Li
- Institute of Antler Science and Product Technology, Changchun Sci-Tech University, No. 1345 of Pudong Rd., Changchun, Jilin, 130600, China.
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun, 130118, China.
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138
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Helm M, Schmidt M, Del Duca E, Liu Y, Mortensen LS, Loui J, Zheng Y, Binder H, Guttman-Yassky E, Cotsarelis G, Simon JC, Ferrer RA. Repurposing DPP4 Inhibition to Improve Hair Follicle Activation and Regeneration. J Invest Dermatol 2023; 143:2132-2144.e15. [PMID: 37236597 DOI: 10.1016/j.jid.2023.04.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 04/27/2023] [Accepted: 04/28/2023] [Indexed: 05/28/2023]
Abstract
Skin injury and several diseases elicit fibrosis and induce hair follicle (HF) growth arrest and loss. The resulting alopecia and disfiguration represent a severe burden for patients, both physically and psychologically. Reduction of profibrotic factors such as dipeptidyl peptidase 4 (DPP4) might be a strategy to tackle this issue. We show DPP4 overrepresentation in settings with HF growth arrest (telogen), HF loss, and nonregenerative wound areas in mouse skin and human scalp. Topical DPP4 inhibition with Food and Drug Administration/European Medicines Agency-approved sitagliptin on preclinical models of murine HF activation/regeneration results in accelerated anagen progress, whereas treatment of wounds with sitagliptin results in reduced expression of fibrosis markers, increased induction of anagen around wounds, and HF regeneration in the wound center. These effects are associated with higher expression of Wnt target Lef1, known to be required for HF anagen/HF-activation and regeneration. Sitagliptin treatment decreases profibrotic signaling in the skin, induces a differentiation trajectory of HF cells, and activates Wnt targets related to HF activation/growth but not those supporting fibrosis. Taken together, our study shows a role for DPP4 in HF biology and shows how DPP4 inhibition, currently used as oral medication to treat diabetes, could be repurposed into a topical treatment agent to potentially reverse HF loss in alopecia and after injury.
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Affiliation(s)
- Maria Helm
- Department of Dermatology, Venereology and Allergology, Leipzig University Medical Center, University Leipzig, Leipzig, Germany
| | - Maria Schmidt
- Interdisciplinary Center for Bioinformatics, University Leipzig, Leipzig, Germany
| | - Ester Del Duca
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, Mount Sinai, New York City, New York, USA
| | - Ying Liu
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, Mount Sinai, New York City, New York, USA
| | - Lena Sünke Mortensen
- Interdisciplinary Center for Bioinformatics, University Leipzig, Leipzig, Germany
| | - Juliane Loui
- Department of Dermatology, Venereology and Allergology, Leipzig University Medical Center, University Leipzig, Leipzig, Germany
| | - Ying Zheng
- Department of Dermatology, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Hans Binder
- Interdisciplinary Center for Bioinformatics, University Leipzig, Leipzig, Germany
| | - Emma Guttman-Yassky
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, Mount Sinai, New York City, New York, USA
| | - George Cotsarelis
- Department of Dermatology, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Jan C Simon
- Department of Dermatology, Venereology and Allergology, Leipzig University Medical Center, University Leipzig, Leipzig, Germany
| | - Rubén A Ferrer
- Department of Dermatology, Venereology and Allergology, Leipzig University Medical Center, University Leipzig, Leipzig, Germany.
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139
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Padmanabhan J, Chen K, Sivaraj D, Henn D, Kuehlmann BA, Kussie HC, Zhao ET, Kahn A, Bonham CA, Dohi T, Beck TC, Trotsyuk AA, Stern-Buchbinder ZA, Than PA, Hosseini HS, Barrera JA, Magbual NJ, Leeolou MC, Fischer KS, Tigchelaar SS, Lin JQ, Perrault DP, Borrelli MR, Kwon SH, Maan ZN, Dunn JCY, Nazerali R, Januszyk M, Prantl L, Gurtner GC. Allometrically scaling tissue forces drive pathological foreign-body responses to implants via Rac2-activated myeloid cells. Nat Biomed Eng 2023; 7:1419-1436. [PMID: 37749310 PMCID: PMC10651488 DOI: 10.1038/s41551-023-01091-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 08/02/2023] [Indexed: 09/27/2023]
Abstract
Small animals do not replicate the severity of the human foreign-body response (FBR) to implants. Here we show that the FBR can be driven by forces generated at the implant surface that, owing to allometric scaling, increase exponentially with body size. We found that the human FBR is mediated by immune-cell-specific RAC2 mechanotransduction signalling, independently of the chemistry and mechanical properties of the implant, and that a pathological FBR that is human-like at the molecular, cellular and tissue levels can be induced in mice via the application of human-tissue-scale forces through a vibrating silicone implant. FBRs to such elevated extrinsic forces in the mice were also mediated by the activation of Rac2 signalling in a subpopulation of mechanoresponsive myeloid cells, which could be substantially reduced via the pharmacological or genetic inhibition of Rac2. Our findings provide an explanation for the stark differences in FBRs observed in small animals and humans, and have implications for the design and safety of implantable devices.
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Affiliation(s)
- Jagannath Padmanabhan
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - Kellen Chen
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA.
- Department of Surgery, University of Arizona College of Medicine, Tucson, AZ, USA.
| | - Dharshan Sivaraj
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA.
- Department of Surgery, University of Arizona College of Medicine, Tucson, AZ, USA.
| | - Dominic Henn
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
- Department of Plastic Surgery, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Britta A Kuehlmann
- Department of Plastic and Reconstructive Surgery, University Hospital Regensburg, Regensburg, Germany
| | - Hudson C Kussie
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
- Department of Surgery, University of Arizona College of Medicine, Tucson, AZ, USA
| | - Eric T Zhao
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - Anum Kahn
- Cell Sciences Imaging Facility (CSIF), Beckman Center, Stanford University, Stanford, CA, USA
| | - Clark A Bonham
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - Teruyuki Dohi
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - Thomas C Beck
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - Artem A Trotsyuk
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
- Department of Surgery, University of Arizona College of Medicine, Tucson, AZ, USA
| | - Zachary A Stern-Buchbinder
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - Peter A Than
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - Hadi S Hosseini
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - Janos A Barrera
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - Noah J Magbual
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - Melissa C Leeolou
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - Katharina S Fischer
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - Seth S Tigchelaar
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - John Q Lin
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - David P Perrault
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - Mimi R Borrelli
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - Sun Hyung Kwon
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - Zeshaan N Maan
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - James C Y Dunn
- Division of Pediatric Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - Rahim Nazerali
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - Michael Januszyk
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - Lukas Prantl
- Department of Plastic and Reconstructive Surgery, University Hospital Regensburg, Regensburg, Germany
| | - Geoffrey C Gurtner
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA.
- Department of Surgery, University of Arizona College of Medicine, Tucson, AZ, USA.
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140
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Scaria SM, Frumm SM, Vikram EP, Easow SA, Sheth AH, Shamir ER, Yu SK, Tward AD. Epimorphic regeneration in the mammalian tympanic membrane. NPJ Regen Med 2023; 8:58. [PMID: 37852984 PMCID: PMC10584978 DOI: 10.1038/s41536-023-00332-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 09/29/2023] [Indexed: 10/20/2023] Open
Abstract
Adult mammals are generally believed to have limited ability to regenerate complex tissues and instead, repair wounds by forming scars. In humans and across mammalian species, the tympanic membrane (TM) rapidly repairs perforations without intervention. Using mouse models, we demonstrate that the TM repairs itself through a process that bears many hallmarks of epimorphic regeneration rather than typical wound healing. Following injury, the TM forms a wound epidermis characterized by EGFR ligand expression and signaling. After the expansion of the wound epidermis that emerges from known stem cell regions of the TM, a multi-lineage blastema-like cellular mass is recruited. After two weeks, the tissue architecture of the TM is largely restored, but with disorganized collagen. In the months that follow, the organized and patterned collagen framework of the TM is restored resulting in scar-free repair. Finally, we demonstrate that deletion of Egfr in the epidermis results in failure to expand the wound epidermis, recruit the blastema-like cells, and regenerate normal TM structure. This work establishes the TM as a model of mammalian complex tissue regeneration.
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Affiliation(s)
- Sonia M Scaria
- Department of Otolaryngology-Head and Neck Surgery, University of California, San Francisco, CA, 94143, USA
| | - Stacey M Frumm
- Department of Otolaryngology-Head and Neck Surgery, University of California, San Francisco, CA, 94143, USA
| | - Ellee P Vikram
- Department of Otolaryngology-Head and Neck Surgery, University of California, San Francisco, CA, 94143, USA
| | - Sarah A Easow
- Department of Otolaryngology-Head and Neck Surgery, University of California, San Francisco, CA, 94143, USA
| | - Amar H Sheth
- Department of Otolaryngology-Head and Neck Surgery, University of California, San Francisco, CA, 94143, USA
| | - Eliah R Shamir
- Department of Pathology, University of California, San Francisco, San Francisco, CA, 94143, USA
| | - Shengyang Kevin Yu
- Department of Otolaryngology-Head and Neck Surgery, University of California, San Francisco, CA, 94143, USA
| | - Aaron D Tward
- Department of Otolaryngology-Head and Neck Surgery, University of California, San Francisco, CA, 94143, USA.
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141
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Konieczny P, Naik S. Cis-regulatory arbitrators of regeneration. Cell Stem Cell 2023; 30:1283-1284. [PMID: 37714155 DOI: 10.1016/j.stem.2023.08.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 08/24/2023] [Accepted: 08/25/2023] [Indexed: 09/17/2023]
Abstract
Mammals favor healing with scaring over functional tissue regeneration.1 In this issue of Cell Stem Cell, Mack et al. use "super-healer" mice to identify cis-regulatory variations that direct regenerative versus fibrotic gene expression in wound fibroblasts and they uncover complement factor H as a molecular driver of skin regeneration.2.
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Affiliation(s)
- Piotr Konieczny
- Department of Pathology, NYU Grossman School of Medicine, NYU Langone Health, New York, NY, USA
| | - Shruti Naik
- Department of Pathology, NYU Grossman School of Medicine, NYU Langone Health, New York, NY, USA; Laura and Isaac Perlmutter Cancer Center, NYU Grossman School of Medicine, NYU Langone Health, New York, NY, USA; Ronald O. Perelman Department of Dermatology, NYU Grossman School of Medicine, NYU Langone Health, New York, NY, USA; Department of Medicine, NYU Grossman School of Medicine, NYU Langone Health, New York, NY, USA.
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142
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Mack KL, Talbott HE, Griffin MF, Parker JBL, Guardino NJ, Spielman AF, Davitt MF, Mascharak S, Downer M, Morgan A, Valencia C, Akras D, Berger MJ, Wan DC, Fraser HB, Longaker MT. Allele-specific expression reveals genetic drivers of tissue regeneration in mice. Cell Stem Cell 2023; 30:1368-1381.e6. [PMID: 37714154 PMCID: PMC10592051 DOI: 10.1016/j.stem.2023.08.010] [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: 08/05/2022] [Revised: 06/16/2023] [Accepted: 08/22/2023] [Indexed: 09/17/2023]
Abstract
In adult mammals, skin wounds typically heal by scarring rather than through regeneration. In contrast, "super-healer" Murphy Roths Large (MRL) mice have the unusual ability to regenerate ear punch wounds; however, the molecular basis for this regeneration remains elusive. Here, in hybrid crosses between MRL and non-regenerating mice, we used allele-specific gene expression to identify cis-regulatory variation associated with ear regeneration. Analyzing three major cell populations (immune, fibroblast, and endothelial), we found that genes with cis-regulatory differences specifically in fibroblasts were associated with wound-healing pathways and also co-localized with quantitative trait loci for ear wound-healing. Ectopic treatment with one of these proteins, complement factor H (CFH), accelerated wound repair and induced regeneration in typically fibrotic wounds. Through single-cell RNA sequencing (RNA-seq), we observed that CFH treatment dramatically reduced immune cell recruitment to wounds, suggesting a potential mechanism for CFH's effect. Overall, our results provide insights into the molecular drivers of regeneration with potential clinical implications.
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Affiliation(s)
- Katya L Mack
- Stanford University, Department of Biology, Stanford, CA, USA
| | - Heather E Talbott
- Stanford School of Medicine, Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford, CA, USA; Stanford Institute for Stem Cell Biology and Regenerative Medicine, Stanford, CA, USA
| | - Michelle F Griffin
- Stanford School of Medicine, Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford, CA, USA
| | - Jennifer B L Parker
- Stanford School of Medicine, Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford, CA, USA; Stanford Institute for Stem Cell Biology and Regenerative Medicine, Stanford, CA, USA
| | - Nicholas J Guardino
- Stanford School of Medicine, Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford, CA, USA
| | - Amanda F Spielman
- Stanford School of Medicine, Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford, CA, USA
| | - Michael F Davitt
- Stanford School of Medicine, Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford, CA, USA
| | - Shamik Mascharak
- Stanford School of Medicine, Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford, CA, USA; Stanford Institute for Stem Cell Biology and Regenerative Medicine, Stanford, CA, USA
| | - Mauricio Downer
- Stanford School of Medicine, Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford, CA, USA
| | - Annah Morgan
- Stanford School of Medicine, Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford, CA, USA
| | - Caleb Valencia
- Stanford School of Medicine, Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford, CA, USA
| | - Deena Akras
- Stanford School of Medicine, Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford, CA, USA
| | - Mark J Berger
- Stanford University, Department of Computer Science, Stanford, CA 94305, USA
| | - Derrick C Wan
- Stanford School of Medicine, Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford, CA, USA
| | - Hunter B Fraser
- Stanford University, Department of Biology, Stanford, CA, USA.
| | - Michael T Longaker
- Stanford School of Medicine, Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford, CA, USA; Stanford Institute for Stem Cell Biology and Regenerative Medicine, Stanford, CA, USA.
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143
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Phan QM, Salz L, Kindl SS, Lopez JS, Thompson SM, Makkar J, Driskell IM, Driskell RR. Lineage commitment of dermal fibroblast progenitors is controlled by Kdm6b-mediated chromatin demethylation. EMBO J 2023; 42:e113880. [PMID: 37602956 PMCID: PMC10548174 DOI: 10.15252/embj.2023113880] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 07/26/2023] [Accepted: 08/01/2023] [Indexed: 08/22/2023] Open
Abstract
Dermal Fibroblast Progenitors (DFPs) differentiate into distinct fibroblast lineages during skin development. However, the epigenetic mechanisms that regulate DFP differentiation are not known. Our objective was to use multimodal single-cell approaches, epigenetic assays, and allografting techniques to define a DFP state and the mechanism that governs its differentiation potential. Our initial results indicated that the overall transcription profile of DFPs is repressed by H3K27me3 and has inaccessible chromatin at lineage-specific genes. Surprisingly, the repressive chromatin profile of DFPs renders them unable to reform the skin in allograft assays despite their multipotent potential. We hypothesized that chromatin derepression was modulated by the H3K27me3 demethylase, Kdm6b/Jmjd3. Dermal fibroblast-specific deletion of Kdm6b/Jmjd3 in mice resulted in adipocyte compartment ablation and inhibition of mature dermal papilla functions, confirmed by additional single-cell RNA-seq, ChIP-seq, and allografting assays. We conclude that DFPs are functionally derepressed during murine skin development by Kdm6b/Jmjd3. Our studies therefore reveal a multimodal understanding of how DFPs differentiate into distinct fibroblast lineages and provide a novel publicly available multiomics search tool.
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Affiliation(s)
- Quan M Phan
- School of Molecular BiosciencesWashington State UniversityPullmanWAUSA
| | - Lucia Salz
- North Rhine‐Westphalia Technical University of AachenAachenGermany
| | - Sam S Kindl
- School of Molecular BiosciencesWashington State UniversityPullmanWAUSA
| | - Jayden S Lopez
- School of Molecular BiosciencesWashington State UniversityPullmanWAUSA
| | - Sean M Thompson
- School of Molecular BiosciencesWashington State UniversityPullmanWAUSA
| | - Jasson Makkar
- School of Molecular BiosciencesWashington State UniversityPullmanWAUSA
| | - Iwona M Driskell
- School of Molecular BiosciencesWashington State UniversityPullmanWAUSA
| | - Ryan R Driskell
- School of Molecular BiosciencesWashington State UniversityPullmanWAUSA
- Center for Reproductive BiologyWashington State UniversityPullmanWAUSA
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144
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Wang L, Li Z, Wan R, Pan X, Li B, Zhao H, Yang J, Zhao W, Wang S, Wang Q, Yan P, Ma C, Yuan H, Zhao M, Rosas I, Ding C, Sun B, Yu G. Single-Cell RNA Sequencing Provides New Insights into Therapeutic Roles of Thyroid Hormone in Idiopathic Pulmonary Fibrosis. Am J Respir Cell Mol Biol 2023; 69:456-469. [PMID: 37402274 PMCID: PMC10557923 DOI: 10.1165/rcmb.2023-0080oc] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 06/29/2023] [Indexed: 07/06/2023] Open
Abstract
Idiopathic pulmonary fibrosis (IPF) is a progressive fatal interstitial lung disease without an effective cure. Herein, we explore the role of 3,5,3'-triiodothyronine (T3) administration on lung alveolar regeneration and fibrosis at the single-cell level. T3 supplementation significantly altered the gene expression in fibrotic lung tissues. Immune cells were rapidly recruited into the lung after the injury; there were much more M2 macrophages than M1 macrophages in the lungs of bleomycin-treated mice; and M1 macrophages increased slightly, whereas M2 macrophages were significantly reduced after T3 treatment. T3 enhanced the resolution of pulmonary fibrosis by promoting the differentiation of Krt8+ transitional alveolar type II epithelial cells into alveolar type I epithelial cells and inhibiting fibroblast activation and extracellular matrix production potentially by regulation of Nr2f2. In addition, T3 regulated the crosstalk of macrophages with fibroblasts, and the Pros1-Axl signaling axis significantly facilitated the attenuation of fibrosis. The findings demonstrate that administration of a thyroid hormone promotes alveolar regeneration and resolves fibrosis mainly by regulation of the cellular state and cell-cell communication of alveolar epithelial cells, macrophages, and fibroblasts in mouse lungs in comprehensive ways.
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Affiliation(s)
- Lan Wang
- State Key Laboratory of Cell Differentiation and Regulation, and
- Henan International Joint Laboratory of Pulmonary Fibrosis, College of Life Science, Henan Normal University, Xinxiang, Henan, China
| | - Zhongzheng Li
- State Key Laboratory of Cell Differentiation and Regulation, and
- Henan International Joint Laboratory of Pulmonary Fibrosis, College of Life Science, Henan Normal University, Xinxiang, Henan, China
| | - Ruyan Wan
- State Key Laboratory of Cell Differentiation and Regulation, and
- Henan International Joint Laboratory of Pulmonary Fibrosis, College of Life Science, Henan Normal University, Xinxiang, Henan, China
| | - Xin Pan
- State Key Laboratory of Cell Differentiation and Regulation, and
- Henan International Joint Laboratory of Pulmonary Fibrosis, College of Life Science, Henan Normal University, Xinxiang, Henan, China
| | - Bin Li
- State Key Laboratory of Cell Differentiation and Regulation, and
- Henan International Joint Laboratory of Pulmonary Fibrosis, College of Life Science, Henan Normal University, Xinxiang, Henan, China
| | - Huabin Zhao
- State Key Laboratory of Cell Differentiation and Regulation, and
- Henan International Joint Laboratory of Pulmonary Fibrosis, College of Life Science, Henan Normal University, Xinxiang, Henan, China
| | - Juntang Yang
- State Key Laboratory of Cell Differentiation and Regulation, and
- Henan International Joint Laboratory of Pulmonary Fibrosis, College of Life Science, Henan Normal University, Xinxiang, Henan, China
| | - Weiming Zhao
- State Key Laboratory of Cell Differentiation and Regulation, and
- Henan International Joint Laboratory of Pulmonary Fibrosis, College of Life Science, Henan Normal University, Xinxiang, Henan, China
| | - Shenghui Wang
- State Key Laboratory of Cell Differentiation and Regulation, and
- Henan International Joint Laboratory of Pulmonary Fibrosis, College of Life Science, Henan Normal University, Xinxiang, Henan, China
| | - Qiwen Wang
- State Key Laboratory of Cell Differentiation and Regulation, and
- Henan International Joint Laboratory of Pulmonary Fibrosis, College of Life Science, Henan Normal University, Xinxiang, Henan, China
| | - Peishuo Yan
- State Key Laboratory of Cell Differentiation and Regulation, and
- Henan International Joint Laboratory of Pulmonary Fibrosis, College of Life Science, Henan Normal University, Xinxiang, Henan, China
| | - Chi Ma
- State Key Laboratory of Cell Differentiation and Regulation, and
- Henan International Joint Laboratory of Pulmonary Fibrosis, College of Life Science, Henan Normal University, Xinxiang, Henan, China
- School of Life Sciences, Fudan University, Shanghai, China; and
| | - Hongmei Yuan
- State Key Laboratory of Cell Differentiation and Regulation, and
- Henan International Joint Laboratory of Pulmonary Fibrosis, College of Life Science, Henan Normal University, Xinxiang, Henan, China
| | - Mengxia Zhao
- State Key Laboratory of Cell Differentiation and Regulation, and
- Henan International Joint Laboratory of Pulmonary Fibrosis, College of Life Science, Henan Normal University, Xinxiang, Henan, China
| | - Ivan Rosas
- Division of Pulmonary, Critical Care and Sleep Medicine, Baylor College of Medicine, Houston, Texas
| | - Chen Ding
- School of Life Sciences, Fudan University, Shanghai, China; and
| | - Baofa Sun
- College of Life Science, Nankai University, Tianjin, China
| | - Guoying Yu
- State Key Laboratory of Cell Differentiation and Regulation, and
- Henan International Joint Laboratory of Pulmonary Fibrosis, College of Life Science, Henan Normal University, Xinxiang, Henan, China
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145
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Yang Y, Chu C, Liu L, Wang C, Hu C, Rung S, Man Y, Qu Y. Tracing immune cells around biomaterials with spatial anchors during large-scale wound regeneration. Nat Commun 2023; 14:5995. [PMID: 37752124 PMCID: PMC10522601 DOI: 10.1038/s41467-023-41608-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Accepted: 09/11/2023] [Indexed: 09/28/2023] Open
Abstract
Skin scarring devoid of dermal appendages after severe trauma has unfavorable effects on aesthetic and physiological functions. Here we present a method for large-area wound regeneration using biodegradable aligned extracellular matrix scaffolds. We show that the implantation of these scaffolds accelerates wound coverage and enhances hair follicle neogenesis. We perform multimodal analysis, in combination with single-cell RNA sequencing and spatial transcriptomics, to explore the immune responses around biomaterials, highlighting the potential role of regulatory T cells in mitigating tissue fibrous by suppressing excessive type 2 inflammation. We find that immunodeficient mice lacking mature T lymphocytes show the typical characteristic of tissue fibrous driven by type 2 macrophage inflammation, validating the potential therapeutic effect of the adaptive immune system activated by biomaterials. These findings contribute to our understanding of the coordination of immune systems in wound regeneration and facilitate the design of immunoregulatory biomaterials in the future.
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Affiliation(s)
- Yang Yang
- Department of Oral Implantology & State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China
- Department of Prosthodontics & State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China
| | - Chenyu Chu
- Department of Oral Implantology & State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China
| | - Li Liu
- Department of Oral Implantology & State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China
| | - Chenbing Wang
- Department of Oral Implantology & State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China
| | - Chen Hu
- Department of Oral Implantology & State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China
| | - Shengan Rung
- Department of Oral Implantology & State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China
- Department of Prosthodontics & State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China
| | - Yi Man
- Department of Oral Implantology & State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China.
| | - Yili Qu
- Department of Prosthodontics & State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China.
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146
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Srivastava R, Singh K, Abouhashem AS, Kumar M, Kacar S, Verma SS, Mohanty SK, Sinha M, Ghatak S, Xuan Y, Sen CK. Human fetal dermal fibroblast-myeloid cell diversity is characterized by dominance of pro-healing Annexin1-FPR1 signaling. iScience 2023; 26:107533. [PMID: 37636079 PMCID: PMC10450526 DOI: 10.1016/j.isci.2023.107533] [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: 06/08/2022] [Revised: 06/06/2023] [Accepted: 07/28/2023] [Indexed: 08/29/2023] Open
Abstract
Fetal skin achieves scarless wound repair. Dermal fibroblasts play a central role in extracellular matrix deposition and scarring outcomes. Both fetal and gingival wound repair share minimal scarring outcomes. We tested the hypothesis that compared to adult skin fibroblasts, human fetal skin fibroblast diversity is unique and partly overlaps with gingival skin fibroblasts. Human fetal skin (FS, n = 3), gingiva (HGG, n = 13), and mature skin (MS, n = 13) were compared at single-cell resolution. Dermal fibroblasts, the most abundant cluster, were examined to establish a connectome with other skin cells. Annexin1-FPR1 signaling pathway was dominant in both FS as well as HGG fibroblasts and related myeloid cells while scanty in MS fibroblasts. Myeloid-specific FPR1-ORF delivered in murine wound edge using tissue nanotransfection (TNT) technology significantly enhanced the quality of healing. Pseudotime analyses identified the co-existence of an HGG fibroblast subset with FPR1high myeloid cells of fetal origin indicating common underlying biological processes.
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Affiliation(s)
- Rajneesh Srivastava
- McGowan Institute for Regenerative Medicine, Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
- Indiana Center for Regenerative Medicine and Engineering, Indiana University Health Comprehensive Wound Center, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Kanhaiya Singh
- McGowan Institute for Regenerative Medicine, Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
- Indiana Center for Regenerative Medicine and Engineering, Indiana University Health Comprehensive Wound Center, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Ahmed S. Abouhashem
- Indiana Center for Regenerative Medicine and Engineering, Indiana University Health Comprehensive Wound Center, Indiana University School of Medicine, Indianapolis, IN, USA
- Sharkia Clinical Research Department, Ministry of Health, Zagazig, Egypt
| | - Manishekhar Kumar
- McGowan Institute for Regenerative Medicine, Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
- Indiana Center for Regenerative Medicine and Engineering, Indiana University Health Comprehensive Wound Center, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Sedat Kacar
- Indiana Center for Regenerative Medicine and Engineering, Indiana University Health Comprehensive Wound Center, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Sumit S. Verma
- McGowan Institute for Regenerative Medicine, Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
- Indiana Center for Regenerative Medicine and Engineering, Indiana University Health Comprehensive Wound Center, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Sujit K. Mohanty
- McGowan Institute for Regenerative Medicine, Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
- Indiana Center for Regenerative Medicine and Engineering, Indiana University Health Comprehensive Wound Center, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Mithun Sinha
- Indiana Center for Regenerative Medicine and Engineering, Indiana University Health Comprehensive Wound Center, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Subhadip Ghatak
- McGowan Institute for Regenerative Medicine, Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
- Indiana Center for Regenerative Medicine and Engineering, Indiana University Health Comprehensive Wound Center, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Yi Xuan
- McGowan Institute for Regenerative Medicine, Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
- Indiana Center for Regenerative Medicine and Engineering, Indiana University Health Comprehensive Wound Center, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Chandan K. Sen
- McGowan Institute for Regenerative Medicine, Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
- Indiana Center for Regenerative Medicine and Engineering, Indiana University Health Comprehensive Wound Center, Indiana University School of Medicine, Indianapolis, IN, USA
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147
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Chen X, Gong L, Li C, Wang S, Wang Z, Chu M, Zhou Y. Single-cell and bulk tissue sequencing unravels the heterogeneity of synovial microenvironment in arthrofibrosis. iScience 2023; 26:107379. [PMID: 37705954 PMCID: PMC10495645 DOI: 10.1016/j.isci.2023.107379] [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: 01/20/2023] [Revised: 04/06/2023] [Accepted: 07/07/2023] [Indexed: 09/15/2023] Open
Abstract
Arthrofibrosis (AF) is a debilitating complication that occurs after trauma or surgery, leading to functional impairment and surgical failures worldwide. This study aimed to uncover the underlying mechanism of AF. A total of 141 patients were enrolled, and synovial samples were collected from both patients and animal models at different time points. Single-cell RNA-sequencing (scRNA-seq) and bulk tissue RNA sequencing (bulk-seq) were employed to profile the distinct synovial microenvironment. This study revealed changes in cell proportions during AF pathogenesis and identified Engrailed-1 (EN1) as a key transcription factor strongly associated with disease severity and clinical prognosis. Additionally, the researchers discovered a specific type of synovial fibroblast called DKK3-SLF, which played a critical role in driving AF development. These findings shed light on the composition and heterogeneity of the synovial microenvironment in AF, offering potential avenues for identifying therapeutic targets and developing clinical treatments for AF and other fibrotic diseases.
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Affiliation(s)
- Xi Chen
- Department of Adult Joint Reconstructive Surgery, Beijing Jishuitan Hospital, Capital Medical University, 31 East Xinjiekou Street, Beijing 100035, China
- Department of Immunology, School of Basic Medical Sciences, Peking University, NHC Key Laboratory of Medical Immunology (Peking University), Beijing, China
| | - Lihua Gong
- Department of Pathology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Cheng Li
- Department of Adult Joint Reconstructive Surgery, Beijing Jishuitan Hospital, Capital Medical University, 31 East Xinjiekou Street, Beijing 100035, China
| | - Siyuan Wang
- Department of Adult Joint Reconstructive Surgery, Beijing Jishuitan Hospital, Capital Medical University, 31 East Xinjiekou Street, Beijing 100035, China
| | - Ziyuan Wang
- Department of Adult Joint Reconstructive Surgery, Beijing Jishuitan Hospital, Capital Medical University, 31 East Xinjiekou Street, Beijing 100035, China
| | - Ming Chu
- Department of Immunology, School of Basic Medical Sciences, Peking University, NHC Key Laboratory of Medical Immunology (Peking University), Beijing, China
| | - Yixin Zhou
- Department of Adult Joint Reconstructive Surgery, Beijing Jishuitan Hospital, Capital Medical University, 31 East Xinjiekou Street, Beijing 100035, China
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148
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Li M, Wang P, Li J, Zhou F, Huang S, Qi S, Shu B. NRP1 transduces mechanical stress inhibition via LATS1/YAP in hypertrophic scars. Cell Death Discov 2023; 9:341. [PMID: 37704618 PMCID: PMC10499927 DOI: 10.1038/s41420-023-01635-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 08/14/2023] [Accepted: 08/29/2023] [Indexed: 09/15/2023] Open
Abstract
Hypertrophic scar (HS) is an abnormal fibrous hyperplasia of the skin caused by excessive tissue repair in response to skin burns and trauma, which restricts physical function and impairs patients' quality of life. Numerous studies have shown that pressure garment therapy (PGT) is an effective treatment for preventing hypertrophic scars. Herein, we found that mechanical stress stimulates the neuropilin 1 (NRP1) expression through screening GSE165027, GSE137210, and GSE120194 from Gene Expression Omnibus (GEO) database and bioinformatics analysis. We verified this stimulation in the human hypertrophic scar, pressure culture cell model, and rat tail-scar model. Mechanical compression increased LATS1 and pYAP enrichment, thus repressing the expression of YAP. Functionally, the knockdown of NRP1 promoted the expression of LATS1, thus decreasing the expression of YAP and inhibiting endothelial cell proliferation. Furthermore, co-immunoprecipitation analysis confirmed that NRP1 binds to YAP, and mechanical compression disrupted this binding, which resulted in the promotion of YAP relocation to nuclear. In conclusion, our results indicated that NRP1 transduces mechanical force inhibition by inhibiting YAP expression. Mechanical pressure can release YAP bound to NRP1, which explains the phenomenon that mechanical stress increases YAP in the nucleus. Strategies targeting NRP1 may promote compression therapy with optimal and comfortable pressures.
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Affiliation(s)
- Mengzhi Li
- Department of Burns, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
- Department of Hand and Foot Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Peng Wang
- Department of Burns, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Jingting Li
- Department of Institute of Precision Medicine, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Fei Zhou
- Department of Burns, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Shixin Huang
- Department of Burns, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Shaohai Qi
- Department of Burns, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.
| | - Bin Shu
- Department of Burns, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.
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149
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Lei M, Harn HIC, Li Q, Jiang J, Wu W, Zhou W, Jiang TX, Wang M, Zhang J, Lai YC, Juan WT, Widelitz RB, Yang L, Gu ZZ, Chuong CM. The mechano-chemical circuit drives skin organoid self-organization. Proc Natl Acad Sci U S A 2023; 120:e2221982120. [PMID: 37643215 PMCID: PMC10483620 DOI: 10.1073/pnas.2221982120] [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: 12/28/2022] [Accepted: 07/28/2023] [Indexed: 08/31/2023] Open
Abstract
Stem cells in organoids self-organize into tissue patterns with unknown mechanisms. Here, we use skin organoids to analyze this process. Cell behavior videos show that the morphological transformation from multiple spheroidal units with morphogenesis competence (CMU) to planar skin is characterized by two abrupt cell motility-increasing events before calming down. The self-organizing processes are controlled by a morphogenetic module composed of molecular sensors, modulators, and executers. Increasing dermal stiffness provides the initial driving force (driver) which activates Yap1 (sensor) in epidermal cysts. Notch signaling (modulator 1) in epidermal cyst tunes the threshold of Yap1 activation. Activated Yap1 induces Wnts and MMPs (epidermal executers) in basal cells to facilitate cellular flows, allowing epidermal cells to protrude out from the CMU. Dermal cell-expressed Rock (dermal executer) generates a stiff force bridge between two CMU and accelerates tissue mixing via activating Laminin and β1-integrin. Thus, this self-organizing coalescence process is controlled by a mechano-chemical circuit. Beyond skin, self-organization in organoids may use similar mechano-chemical circuit structures.
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Affiliation(s)
- Mingxing Lei
- Key Laboratory of Biorheological Science and Technology of Ministry of Education & 111 Project Laboratory of Biomechanics and Tissue Repair, College of Bioengineering, Chongqing University, Chongqing400044, China
- Integrative Stem Cell Center, China Medical University Hospital, China Medical University, Taichung40402, Taiwan
| | - Hans I-Chen Harn
- Department of Pathology, Keck School of Medicine, University of Southern California, Los Angeles, CA90033
| | - Qiwei Li
- State Key Laboratory of Bioelectronics, School of Biological Science & Medical Engineering, Southeast University, Nanjing210096, China
| | - Jingwei Jiang
- Key Laboratory of Biorheological Science and Technology of Ministry of Education & 111 Project Laboratory of Biomechanics and Tissue Repair, College of Bioengineering, Chongqing University, Chongqing400044, China
| | - Wang Wu
- Key Laboratory of Biorheological Science and Technology of Ministry of Education & 111 Project Laboratory of Biomechanics and Tissue Repair, College of Bioengineering, Chongqing University, Chongqing400044, China
| | - Wei Zhou
- Chongqing Key Laboratory of Translational Research for Cancer Metastasis and Individualized Treatment, Chongqing University Cancer Hospital, Chongqing400030, China
| | - Tin-Xin Jiang
- Department of Pathology, Keck School of Medicine, University of Southern California, Los Angeles, CA90033
| | - Mengyue Wang
- Key Laboratory of Biorheological Science and Technology of Ministry of Education & 111 Project Laboratory of Biomechanics and Tissue Repair, College of Bioengineering, Chongqing University, Chongqing400044, China
| | - Jinwei Zhang
- Key Laboratory of Biorheological Science and Technology of Ministry of Education & 111 Project Laboratory of Biomechanics and Tissue Repair, College of Bioengineering, Chongqing University, Chongqing400044, China
| | - Yung-Chih Lai
- Integrative Stem Cell Center, China Medical University Hospital, China Medical University, Taichung40402, Taiwan
| | - Wen-Tau Juan
- Integrative Stem Cell Center, China Medical University Hospital, China Medical University, Taichung40402, Taiwan
| | - Randall Bruce Widelitz
- Department of Pathology, Keck School of Medicine, University of Southern California, Los Angeles, CA90033
| | - Li Yang
- Key Laboratory of Biorheological Science and Technology of Ministry of Education & 111 Project Laboratory of Biomechanics and Tissue Repair, College of Bioengineering, Chongqing University, Chongqing400044, China
| | - Zhong-Ze Gu
- State Key Laboratory of Bioelectronics, School of Biological Science & Medical Engineering, Southeast University, Nanjing210096, China
| | - Cheng-Ming Chuong
- Department of Pathology, Keck School of Medicine, University of Southern California, Los Angeles, CA90033
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Bordoni B, Escher AR, Girgenti GT, Tobbi F, Bonanzinga R. Osteopathic Approach for Keloids and Hypertrophic Scars. Cureus 2023; 15:e44815. [PMID: 37692181 PMCID: PMC10483258 DOI: 10.7759/cureus.44815] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/06/2023] [Indexed: 09/12/2023] Open
Abstract
The skin is a complex organ, a system that influences and is influenced by the body system, with different skin layers always mechano-biologically active. In the presence of a lesion that damages the dermis, the skin undergoes sensory, morphological, and functional alterations. The subsequent adaptation is the formation of scar tissue, following distinct and overlapping biological phases. For reasons not yet fully elucidated, some healing processes lead to pathological scars, from which symptoms such as pain, itching, and functional limitations are derived. Currently, there is no gold standard treatment that fully meets the needs of different scars and can eliminate any symptoms that the patient suffers. One such treatment is manual medicine, which involves direct manual approaches to the site of injury. Reviewing the phases that allow the skin to be remodeled following an injury, this article reflects on the usefulness of resorting to these procedures, highlighting erroneous concepts on which the manual approach is based, compared to what the current literature highlights the cicatricial processes. Considering pathological scar adaptations, it would be better to follow a gentle manual approach.
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Affiliation(s)
- Bruno Bordoni
- Physical Medicine and Rehabilitation, Foundation Don Carlo Gnocchi, Milan, ITA
| | - Allan R Escher
- Anesthesiology/Pain Medicine, H. Lee Moffitt Cancer Center and Research Institute, Tampa, USA
| | - Gregory T Girgenti
- Anesthesiology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, USA
| | - Filippo Tobbi
- Osteopathy, PGO (Post Graduate Osteopathic) Institute, Lesignano De' bagni, ITA
| | - Roberto Bonanzinga
- Osteopathy, PGO (Post Graduate Osteopathic) Institute, Lesignano De' bagni, ITA
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