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Fu YC, Das A, Wang D, Braun R, Yi R. scHolography: a computational method for single-cell spatial neighborhood reconstruction and analysis. Genome Biol 2024; 25:164. [PMID: 38915088 PMCID: PMC11197379 DOI: 10.1186/s13059-024-03299-3] [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: 10/09/2023] [Accepted: 06/04/2024] [Indexed: 06/26/2024] Open
Abstract
Spatial transcriptomics has transformed our ability to study tissue complexity. However, it remains challenging to accurately dissect tissue organization at single-cell resolution. Here we introduce scHolography, a machine learning-based method designed to reconstruct single-cell spatial neighborhoods and facilitate 3D tissue visualization using spatial and single-cell RNA sequencing data. scHolography employs a high-dimensional transcriptome-to-space projection that infers spatial relationships among cells, defining spatial neighborhoods and enhancing analyses of cell-cell communication. When applied to both human and mouse datasets, scHolography enables quantitative assessments of spatial cell neighborhoods, cell-cell interactions, and tumor-immune microenvironment. Together, scHolography offers a robust computational framework for elucidating 3D tissue organization and analyzing spatial dynamics at the cellular level.
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Affiliation(s)
- Yuheng C Fu
- Driskill Graduate Program in Life Sciences, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, USA
- Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, USA
| | - Arpan Das
- Driskill Graduate Program in Life Sciences, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, USA
- Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, USA
| | - Dongmei Wang
- Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, USA
- Robert H. Lurie Comprehensive Cancer Center, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, USA
| | - Rosemary Braun
- Driskill Graduate Program in Life Sciences, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, USA.
- Department of Molecular Biosciences, Northwestern University, Evanston, IL, 60208, USA.
- Department of Engineering Sciences and Applied Mathematics, Northwestern University, Evanston, IL, 60208, USA.
- Department of Physics and Astronomy, Northwestern University, Evanston, IL, 60208, USA.
- NSF-Simons Center for Quantitative Biology, Northwestern University, Evanston, IL, 60208, USA.
| | - Rui Yi
- Driskill Graduate Program in Life Sciences, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, USA.
- Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, USA.
- Robert H. Lurie Comprehensive Cancer Center, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, USA.
- Department of Dermatology, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, USA.
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2
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Patrick R, Janbandhu V, Tallapragada V, Tan SSM, McKinna EE, Contreras O, Ghazanfar S, Humphreys DT, Murray NJ, Tran YTH, Hume RD, Chong JJH, Harvey RP. Integration mapping of cardiac fibroblast single-cell transcriptomes elucidates cellular principles of fibrosis in diverse pathologies. SCIENCE ADVANCES 2024; 10:eadk8501. [PMID: 38905342 PMCID: PMC11192082 DOI: 10.1126/sciadv.adk8501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Accepted: 05/14/2024] [Indexed: 06/23/2024]
Abstract
Single-cell technology has allowed researchers to probe tissue complexity and dynamics at unprecedented depth in health and disease. However, the generation of high-dimensionality single-cell atlases and virtual three-dimensional tissues requires integrated reference maps that harmonize disparate experimental designs, analytical pipelines, and taxonomies. Here, we present a comprehensive single-cell transcriptome integration map of cardiac fibrosis, which underpins pathophysiology in most cardiovascular diseases. Our findings reveal similarity between cardiac fibroblast (CF) identities and dynamics in ischemic versus pressure overload models of cardiomyopathy. We also describe timelines for commitment of activated CFs to proliferation and myofibrogenesis, profibrotic and antifibrotic polarization of myofibroblasts and matrifibrocytes, and CF conservation across mouse and human healthy and diseased hearts. These insights have the potential to inform knowledge-based therapies.
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Affiliation(s)
- Ralph Patrick
- Victor Chang Cardiac Research Institute, Darlinghurst, NSW 2010, Australia
- School of Clinical Medicine, UNSW Sydney, Kensington, NSW 2052, Australia
- Institute for Molecular Bioscience, The University of Queensland, St. Lucia, QLD 4072, Australia
| | - Vaibhao Janbandhu
- Victor Chang Cardiac Research Institute, Darlinghurst, NSW 2010, Australia
- School of Clinical Medicine, UNSW Sydney, Kensington, NSW 2052, Australia
| | | | - Shannon S. M. Tan
- Victor Chang Cardiac Research Institute, Darlinghurst, NSW 2010, Australia
| | - Emily E. McKinna
- Victor Chang Cardiac Research Institute, Darlinghurst, NSW 2010, Australia
- Westmead Institute for Medical Research, The University of Sydney, Westmead, NSW 2145, Australia
| | - Osvaldo Contreras
- Victor Chang Cardiac Research Institute, Darlinghurst, NSW 2010, Australia
- School of Clinical Medicine, UNSW Sydney, Kensington, NSW 2052, Australia
| | - Shila Ghazanfar
- School of Mathematics and Statistics, The University of Sydney, Camperdown, NSW 2006, Australia
- Charles Perkins Centre, The University of Sydney, Camperdown, NSW 2006, Australia
- Sydney Precision Data Science Centre, The University of Sydney, Camperdown, NSW 2006, Australia
| | - David T. Humphreys
- Victor Chang Cardiac Research Institute, Darlinghurst, NSW 2010, Australia
- School of Clinical Medicine, UNSW Sydney, Kensington, NSW 2052, Australia
| | - Nicholas J. Murray
- Victor Chang Cardiac Research Institute, Darlinghurst, NSW 2010, Australia
- School of Clinical Medicine, UNSW Sydney, Kensington, NSW 2052, Australia
| | - Yen T. H. Tran
- Victor Chang Cardiac Research Institute, Darlinghurst, NSW 2010, Australia
| | - Robert D. Hume
- Westmead Institute for Medical Research, The University of Sydney, Westmead, NSW 2145, Australia
- School of Medical Science, The University of Sydney, Camperdown, NSW 2006, Australia
- Centre for Heart Failure and Diseases of the Aorta, The Baird Institute, Sydney, NSW 2042, Australia
| | - James J. H. Chong
- Westmead Institute for Medical Research, The University of Sydney, Westmead, NSW 2145, Australia
- Department of Cardiology, Westmead Hospital, Westmead, NSW 2145, Australia
| | - Richard P. Harvey
- Victor Chang Cardiac Research Institute, Darlinghurst, NSW 2010, Australia
- School of Clinical Medicine, UNSW Sydney, Kensington, NSW 2052, Australia
- School of Biotechnology and Biomolecular Science, UNSW Sydney, Kensington, NSW 2052, Australia
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3
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Kobayashi T, Yamashita A, Tsumaki N, Watanabe H. Subpopulations of fibroblasts derived from human iPS cells. Commun Biol 2024; 7:736. [PMID: 38890483 PMCID: PMC11189496 DOI: 10.1038/s42003-024-06419-8] [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: 12/07/2023] [Accepted: 06/06/2024] [Indexed: 06/20/2024] Open
Abstract
Organ fibrosis causes collagen fiber overgrowth and impairs organ function. Cardiac fibrosis after myocardial infarction impairs cardiac function significantly, pulmonary fibrosis reduces gas exchange efficiency, and liver fibrosis disturbs the natural function of the liver. Its development is associated with the differentiation of fibroblasts into myofibroblasts and increased collagen synthesis. Fibrosis has organ specificity, defined by the heterogeneity of fibroblasts. Although this heterogeneity is established during embryonic development, it has not been defined yet. Fibroblastic differentiation of induced pluripotent stem cells (iPSCs) recapitulates the process by which fibroblasts acquire diversity. Here, we differentiated iPSCs into cardiac, hepatic, and dermal fibroblasts and analyzed their properties using single-cell RNA sequencing. We observed characteristic subpopulations with different ratios in each organ-type fibroblast group, which contained both resting and distinct ACTA2+ myofibroblasts. These findings provide crucial information on the ontogeny-based heterogeneity of fibroblasts, leading to the development of therapeutic strategies to control fibrosis.
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Affiliation(s)
- Takashi Kobayashi
- Institute for Molecular Science of Medicine, Aichi Medical University, Aichi, Japan
| | - Akihiro Yamashita
- Department of Tissue Biochemistry, Graduate School of Medicine and Frontier Biosciences, Osaka University, Osaka, Japan
| | - Noriyuki Tsumaki
- Department of Tissue Biochemistry, Graduate School of Medicine and Frontier Biosciences, Osaka University, Osaka, Japan
| | - Hideto Watanabe
- Institute for Molecular Science of Medicine, Aichi Medical University, Aichi, Japan.
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4
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Sol S, Boncimino F, Todorova K, Mandinova A. Unraveling the Functional Heterogeneity of Human Skin at Single-Cell Resolution. Hematol Oncol Clin North Am 2024:S0889-8588(24)00050-9. [PMID: 38839486 DOI: 10.1016/j.hoc.2024.05.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2024]
Abstract
The skin consists of several cell populations, including epithelial, immune, and stromal cells. Recently, there has been a significant increase in single-cell RNA-sequencing studies, contributing to the development of a consensus Human Skin Cell Atlas. The aim is to understand skin biology better and identify potential therapeutic targets. The present review utilized previously published single-cell RNA-sequencing datasets to explore human skin's cellular and functional heterogeneity. Additionally, it summarizes the functional significance of newly identified cell subpopulations in processes such as wound healing and aging.
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Affiliation(s)
- Stefano Sol
- Cutaneous Biology Research Center, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA 02129, USA
| | - Fabiana Boncimino
- Cutaneous Biology Research Center, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA 02129, USA
| | - Kristina Todorova
- Cutaneous Biology Research Center, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA 02129, USA
| | - Anna Mandinova
- Cutaneous Biology Research Center, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA 02129, USA; Broad Institute of Harvard and MIT, 7 Cambridge Center, MA 02142, USA; Harvard Stem Cell Institute, 7 Divinity Avenue Cambridge, MA 02138, USA.
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5
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Xu C, Zhang H, Yang C, Wang Y, Wang K, Wang R, Zhang W, Li C, Tian C, Han C, Li M, Liu X, Wang Y, Li Y, Zhang J, Li Y, Luo L, Shang Y, Zhang L, Chen Y, Shen K, Hu D. miR-125b-5p delivered by adipose-derived stem cell exosomes alleviates hypertrophic scarring by suppressing Smad2. BURNS & TRAUMA 2024; 12:tkad064. [PMID: 38765787 PMCID: PMC11102599 DOI: 10.1093/burnst/tkad064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 12/08/2023] [Accepted: 12/14/2023] [Indexed: 05/22/2024]
Abstract
Background Hypertrophic scarring is the most serious and unmet challenge following burn and trauma injury and often leads to pain, itching and even loss of function. However, the demand for ideal scar prevention and treatment is difficult to satisfy. We aimed to discover the effects and mechanisms of adipose-derived stem cell (ADSC) exosomes in hypertrophic scarring. Methods ADSC exosomes were isolated from the culture supernatant of ADSCs and identified by nanoparticle tracking analysis, transmission electron microscopy and western blotting. The effect of ADSC exosomes on wound healing and scar formation was detected by the wound model of BALB/c mice. We isolated myofibroblasts from hypertrophic scar tissue and detected the cell viability, proliferation and migration of myofibroblasts. In addition, collagen formation and fibrosis-related molecules were also detected. To further disclose the mechanism of ADSC exosomes on fibrosis in myofibroblasts, we detected the expression of Smad2 in hypertrophic scar tissue and normal skin and the regulatory mechanism of ADSC exosomes on Smad2. Injection of bleomycin was performed in male BALB/c mice to establish an in vivo fibrosis model while ADSC exosomes were administered to observe their protective effect. The tissue injury of mice was observed via hematoxylin and eosin and Masson staining and related testing. Results In this study, we found that ADSC exosomes could not only speed up wound healing and improve healing quality but also prevent scar formation. ADSC exosomes inhibited expression of fibrosis-related molecules such as α-smooth muscle actin, collagen I (COL1) and COL3 and inhibited the transdifferentiation of myofibroblasts. In addition, we verified that Smad2 is highly expressed in both hypertrophic scar tissue and hypertrophic fibroblasts, while ADSC exosomes downregulated the expression of Smad2 in hypertrophic fibroblasts. Further regulatory mechanism analysis revealed that microRNA-125b-5p (miR-125b-5p) is highly expressed in ADSC exosomes and binds to the 3' untranslated region of Smad2, thus inhibiting its expression. In vivo experiments also revealed that ADSC exosomes could alleviate bleomycin-induced skin fibrosis and downregulate the expression of Smad2. Conclusions We found that ADSC exosomes could alleviate hypertrophic scars via the suppression of Smad2 by the specific delivery of miR-125b-5p.
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Affiliation(s)
- Chaolei Xu
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China
| | - Hao Zhang
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China
| | - Chen Yang
- Department of Plastic Surgery, Burns and Cosmetology, The First Affiliated Hospital of Xi’an Medical University, Xi’an 710032, China
| | - Ying Wang
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China
| | - Kejia Wang
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China
| | - Rui Wang
- Department of Aerospace Medical Training, School of Aerospace Medicine, Fourth Military Medical University, Xi’an 710032, China
| | - Wei Zhang
- Department of Plastic Surgery, Burns and Cosmetology, The First Affiliated Hospital of Xi’an Medical University, Xi’an 710032, China
| | - Chao Li
- Department of Plastic Surgery, Burns and Cosmetology, The First Affiliated Hospital of Xi’an Medical University, Xi’an 710032, China
| | - Chenyang Tian
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China
| | - Chao Han
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China
| | - Mengyang Li
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China
| | - Xu Liu
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China
| | - Yunwei Wang
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China
| | - Yan Li
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China
| | - Jian Zhang
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China
| | - Yu Li
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China
| | - Liang Luo
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China
| | - Yage Shang
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China
| | - Lixia Zhang
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China
| | - Yuxi Chen
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China
| | - Kuo Shen
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China
| | - Dahai Hu
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China
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Johan MZ, Pyne NT, Kolesnikoff N, Poltavets V, Esmaeili Z, Woodcock JM, Lopez AF, Cowin AJ, Pitson SM, Samuel MS. Accelerated Closure of Diabetic Wounds by Efficient Recruitment of Fibroblasts upon Inhibiting a 14-3-3/ROCK Regulatory Axis. J Invest Dermatol 2024:S0022-202X(24)00276-8. [PMID: 38582367 DOI: 10.1016/j.jid.2024.03.032] [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: 03/16/2023] [Revised: 03/08/2024] [Accepted: 03/26/2024] [Indexed: 04/08/2024]
Abstract
Chronic non-healing wounds negatively impact quality of life and are a significant financial drain on health systems. The risk of infection that exacerbates comorbidities in patients necessitates regular application of wound care. Understanding the mechanisms underlying impaired wound healing are therefore a key priority to inform effective new-generation treatments. In this study, we demonstrate that 14-3-3-mediated suppression of signaling through ROCK is a critical mechanism that inhibits the healing of diabetic wounds. Accordingly, pharmacological inhibition of 14-3-3 by topical application of the sphingo-mimetic drug RB-11 to diabetic wounds on a mouse model of type II diabetes accelerated wound closure more than 2-fold than vehicle control, phenocopying our previous observations in 14-3-3ζ-knockout mice. We also demonstrate that accelerated closure of the wounded epidermis by 14-3-3 inhibition causes enhanced signaling through the Rho-ROCK pathway and that the underlying cellular mechanism involves the efficient recruitment of dermal fibroblasts into the wound and the rapid production of extracellular matrix proteins to re-establish the injured dermis. Our observations that the 14-3-3/ROCK inhibitory axis characterizes impaired wound healing and that its suppression facilitates fibroblast recruitment and accelerated re-epithelialization suggest new possibilities for treating diabetic wounds by pharmacologically targeting this axis.
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Affiliation(s)
- M Zahied Johan
- Centre for Cancer Biology, An Alliance between SA Pathology and the University of South Australia, Adelaide, Australia; Basil Hetzel Institute for Translational Health Research, Woodville, Australia
| | - Natasha T Pyne
- Centre for Cancer Biology, An Alliance between SA Pathology and the University of South Australia, Adelaide, Australia
| | - Natasha Kolesnikoff
- Centre for Cancer Biology, An Alliance between SA Pathology and the University of South Australia, Adelaide, Australia; Basil Hetzel Institute for Translational Health Research, Woodville, Australia
| | - Valentina Poltavets
- Centre for Cancer Biology, An Alliance between SA Pathology and the University of South Australia, Adelaide, Australia
| | - Zahra Esmaeili
- Centre for Cancer Biology, An Alliance between SA Pathology and the University of South Australia, Adelaide, Australia; Basil Hetzel Institute for Translational Health Research, Woodville, Australia
| | - Joanna M Woodcock
- Centre for Cancer Biology, An Alliance between SA Pathology and the University of South Australia, Adelaide, Australia
| | - Angel F Lopez
- Centre for Cancer Biology, An Alliance between SA Pathology and the University of South Australia, Adelaide, Australia; Adelaide Medical School, Faculty of Health and Medical Sciences, The University of Adelaide, Adelaide, Australia
| | - Allison J Cowin
- Future Industries Institute, University of South Australia, Adelaide, Australia
| | - Stuart M Pitson
- Centre for Cancer Biology, An Alliance between SA Pathology and the University of South Australia, Adelaide, Australia
| | - Michael S Samuel
- Centre for Cancer Biology, An Alliance between SA Pathology and the University of South Australia, Adelaide, Australia; Basil Hetzel Institute for Translational Health Research, Woodville, Australia; Adelaide Medical School, Faculty of Health and Medical Sciences, The University of Adelaide, Adelaide, Australia.
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7
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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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8
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Wang Y, Vizely K, Li CY, Shen K, Shakeri A, Khosravi R, Smith JR, Alteza EAII, Zhao Y, Radisic M. Biomaterials for immunomodulation in wound healing. Regen Biomater 2024; 11:rbae032. [PMID: 38779347 PMCID: PMC11110865 DOI: 10.1093/rb/rbae032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 03/18/2024] [Accepted: 03/20/2024] [Indexed: 05/25/2024] Open
Abstract
The substantial economic impact of non-healing wounds, scarring, and burns stemming from skin injuries is evident, resulting in a financial burden on both patients and the healthcare system. This review paper provides an overview of the skin's vital role in guarding against various environmental challenges as the body's largest protective organ and associated developments in biomaterials for wound healing. We first introduce the composition of skin tissue and the intricate processes of wound healing, with special attention to the crucial role of immunomodulation in both acute and chronic wounds. This highlights how the imbalance in the immune response, particularly in chronic wounds associated with underlying health conditions such as diabetes and immunosuppression, hinders normal healing stages. Then, this review distinguishes between traditional wound-healing strategies that create an optimal microenvironment and recent peptide-based biomaterials that modulate cellular processes and immune responses to facilitate wound closure. Additionally, we highlight the importance of considering the stages of wounds in the healing process. By integrating advanced materials engineering with an in-depth understanding of wound biology, this approach holds promise for reshaping the field of wound management and ultimately offering improved outcomes for patients with acute and chronic wounds.
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Affiliation(s)
- Ying Wang
- Institute of Biomedical Engineering, University of Toronto, Toronto, ON M5S 3G9, Canada
- Toronto General Research Institute, University Health Network, Toronto, ON M5G 2C4 Canada
| | - Katrina Vizely
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, ON M5S 3E5, Canada
| | - Chen Yu Li
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, ON M5S 3E5, Canada
| | - Karen Shen
- Toronto General Research Institute, University Health Network, Toronto, ON M5G 2C4 Canada
| | - Amid Shakeri
- Institute of Biomedical Engineering, University of Toronto, Toronto, ON M5S 3G9, Canada
- Toronto General Research Institute, University Health Network, Toronto, ON M5G 2C4 Canada
| | - Ramak Khosravi
- Toronto General Research Institute, University Health Network, Toronto, ON M5G 2C4 Canada
- Division of Cardiovascular and Thoracic Surgery, Department of Surgery, Duke University Medical Center, Durham, NC 27710, USA
| | - James Ryan Smith
- Institute of Biomedical Engineering, University of Toronto, Toronto, ON M5S 3G9, Canada
| | | | - Yimu Zhao
- Institute of Biomedical Engineering, University of Toronto, Toronto, ON M5S 3G9, Canada
- Toronto General Research Institute, University Health Network, Toronto, ON M5G 2C4 Canada
| | - Milica Radisic
- Institute of Biomedical Engineering, University of Toronto, Toronto, ON M5S 3G9, Canada
- Toronto General Research Institute, University Health Network, Toronto, ON M5G 2C4 Canada
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, ON M5S 3E5, Canada
- Terrence Donnelly Centre for Cellular & Biomolecular Research, University of Toronto, Toronto, ON M5S 3E1, Canada
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9
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Shi Z, Liu Z, Wei Y, Zhang R, Deng Y, Li D. The role of dermal fibroblasts in autoimmune skin diseases. Front Immunol 2024; 15:1379490. [PMID: 38545113 PMCID: PMC10965632 DOI: 10.3389/fimmu.2024.1379490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Accepted: 03/01/2024] [Indexed: 04/18/2024] Open
Abstract
Fibroblasts are an important subset of mesenchymal cells in maintaining skin homeostasis and resisting harmful stimuli. Meanwhile, fibroblasts modulate immune cell function by secreting cytokines, thereby implicating their involvement in various dermatological conditions such as psoriasis, vitiligo, and atopic dermatitis. Recently, variations in the subtypes of fibroblasts and their expression profiles have been identified in these prevalent autoimmune skin diseases, implying that fibroblasts may exhibit distinct functionalities across different diseases. In this review, from the perspective of their fundamental functions and remarkable heterogeneity, we have comprehensively collected evidence on the role of fibroblasts and their distinct subpopulations in psoriasis, vitiligo, atopic dermatitis, and scleroderma. Importantly, these findings hold promise for guiding future research directions and identifying novel therapeutic targets for treating these diseases.
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Affiliation(s)
| | | | | | | | | | - Dong Li
- Department of Dermatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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10
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Nikoloudaki G, Hamilton DW. Assessing the fate and contribution of Foxd1-expressing embryonic precursors and their progeny in palatal development, homeostasis and excisional repair. Sci Rep 2024; 14:4969. [PMID: 38424240 PMCID: PMC10904772 DOI: 10.1038/s41598-024-55486-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Accepted: 02/23/2024] [Indexed: 03/02/2024] Open
Abstract
Oral mucosal tissues heal rapidly with minimal scarring, although palatal mucosa can be associated with excessive fibrosis in response to injury. Investigations on the balance between neovascularization and tissue repair suggests regulation of angiogenesis is an important determinant of repair versus scarring. Associated with pericyte mediated fibrosis in kidney injury, FoxD1 is implicated in growth centres during cranio-facial development, although which cell lineages are derived from these embryonic populations in development and in adult animals is unknown. Using a lineage tracing approach, we assessed the fate of embryonic Foxd1-expressing progenitor cells and their progeny in palatal development and during wound healing in adult mice. During palatal development as well as in post-natal tissues, Foxd1-lineage progeny were associated with the vasculature and the epineurium. Post-injury, de novo expression of FoxD1 was not detectable, although Foxd1-lineage progeny expanded while exhibiting low association with the fibroblast/myofibroblast markers PDGFα, PDGFβ, vimentin, α-smooth muscle actin, as well as the neuronal associated markers S100β and p75NTR. Foxd1-lineage progeny were primarily associated with CD146, CD31, and to a lesser extent CD105, remaining in close proximity to developing neovascular structures. Our findings demonstrate that FoxD1 derived cells are predominantly associated with the palatal vasculature and provide strong evidence that FoxD1 derived cells do not give rise to populations involved directly in the scarring of the palate.
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Affiliation(s)
- Georgia Nikoloudaki
- Department of Anatomy and Cell Biology, Schulich School of Medicine and Dentistry, Western University, London, ON, N6A 5C1, Canada
- Schulich Dentistry, Schulich School of Medicine and Dentistry, Western University, London, ON, N6A 5C1, Canada
| | - Douglas W Hamilton
- Department of Anatomy and Cell Biology, Schulich School of Medicine and Dentistry, Western University, London, ON, N6A 5C1, Canada.
- Schulich Dentistry, Schulich School of Medicine and Dentistry, Western University, London, ON, N6A 5C1, Canada.
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11
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Hafa L, Breideband L, Ramirez Posada L, Torras N, Martinez E, Stelzer EHK, Pampaloni F. Light Sheet-Based Laser Patterning Bioprinting Produces Long-Term Viable Full-Thickness Skin Constructs. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2306258. [PMID: 37822216 DOI: 10.1002/adma.202306258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 10/04/2023] [Indexed: 10/13/2023]
Abstract
Tissue engineering holds great promise for biomedical research and healthcare, offering alternatives to animal models and enabling tissue regeneration and organ transplantation. 3D bioprinting stands out for its design flexibility and reproducibility. Here, an integrated fluorescent light sheet bioprinting and imaging system is presented that combines high printing speed (0.66 mm3 /s) and resolution (9 µm) with light sheet-based imaging. This approach employs direct laser patterning and a static light sheet for confined voxel crosslinking in photocrosslinkable materials. The developed bioprinter enables real-time monitoring of hydrogel crosslinking using fluorescent recovery after photobleaching (FRAP) and brightfield imaging as well as in situ light sheet imaging of cells. Human fibroblasts encapsulated in a thiol-ene click chemistry-based hydrogel exhibited high viability (83% ± 4.34%) and functionality. Furthermore, full-thickness skin constructs displayed characteristics of both epidermal and dermal layers and remained viable for 41 days. The integrated approach demonstrates the capabilities of light sheet bioprinting, offering high speed, resolution, and real-time characterization. Future enhancements involving solid-state laser scanning devices such as acousto-optic deflectors and modulators will further enhance resolution and speed, opening new opportunities in light-based bioprinting and advancing tissue engineering.
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Affiliation(s)
- Levin Hafa
- Institute of Cell Biology and Neurosciences (IZN), Buchman Institute for Molecular Life Sciences (BMLS), Goethe-Universität Frankfurt am Main, Max-von-Laue-Straße 15, 60438, Frankfurt am Main, Germany
| | - Louise Breideband
- Institute of Cell Biology and Neurosciences (IZN), Buchman Institute for Molecular Life Sciences (BMLS), Goethe-Universität Frankfurt am Main, Max-von-Laue-Straße 15, 60438, Frankfurt am Main, Germany
| | - Lucas Ramirez Posada
- Institute of Cell Biology and Neurosciences (IZN), Buchman Institute for Molecular Life Sciences (BMLS), Goethe-Universität Frankfurt am Main, Max-von-Laue-Straße 15, 60438, Frankfurt am Main, Germany
| | - Núria Torras
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology (BIST), Barcelona, 08028, Spain
| | - Elena Martinez
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology (BIST), Barcelona, 08028, Spain
| | - Ernst H K Stelzer
- Institute of Cell Biology and Neurosciences (IZN), Buchman Institute for Molecular Life Sciences (BMLS), Goethe-Universität Frankfurt am Main, Max-von-Laue-Straße 15, 60438, Frankfurt am Main, Germany
| | - Francesco Pampaloni
- Institute of Cell Biology and Neurosciences (IZN), Buchman Institute for Molecular Life Sciences (BMLS), Goethe-Universität Frankfurt am Main, Max-von-Laue-Straße 15, 60438, Frankfurt am Main, Germany
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12
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Liao Y, Zhang Z, Ouyang L, Mi B, Liu G. Engineered Extracellular Vesicles in Wound Healing: Design, Paradigms, and Clinical Application. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2307058. [PMID: 37806763 DOI: 10.1002/smll.202307058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 09/20/2023] [Indexed: 10/10/2023]
Abstract
The severe quality of life and economic burden imposed by non-healing skin wounds, infection risks, and treatment costs are affecting millions of patients worldwide. To mitigate these challenges, scientists are relentlessly seeking effective treatment measures. In recent years, extracellular vesicles (EVs) have emerged as a promising cell-free therapy strategy, attracting extensive attention from researchers. EVs mediate intercellular communication, possessing excellent biocompatibility and stability. These features make EVs a potential tool for treating a plethora of diseases, including those related to wound repair. However, there is a growing focus on the engineering of EVs to overcome inherent limitations such as low production, relatively fixed content, and targeting capabilities of natural EVs. This engineering could improve both the effectiveness and specificity of EVs in wound repair treatments. In light of this, the present review will introduce the latest progress in the design methods and experimental paradigms of engineered EVs applied in wound repair. Furthermore, it will comprehensively analyze the current clinical research status and prospects of engineered EVs within this field.
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Affiliation(s)
- Yuheng Liao
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, 430022, China
| | - Zhenhe Zhang
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, 430022, China
| | - Lizhi Ouyang
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, 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
| | - Guohui Liu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, 430022, China
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13
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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: 0] [Impact Index Per Article: 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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14
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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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15
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Ganier C, Mazin P, Herrera-Oropeza G, Du-Harpur X, Blakeley M, Gabriel J, Predeus AV, Cakir B, Prete M, Harun N, Darrigrand JF, Haiser A, Wyles S, Shaw T, Teichmann SA, Haniffa M, Watt FM, Lynch MD. Multiscale spatial mapping of cell populations across anatomical sites in healthy human skin and basal cell carcinoma. Proc Natl Acad Sci U S A 2024; 121:e2313326120. [PMID: 38165934 PMCID: PMC10786309 DOI: 10.1073/pnas.2313326120] [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: 08/06/2023] [Accepted: 11/13/2023] [Indexed: 01/04/2024] Open
Abstract
Our understanding of how human skin cells differ according to anatomical site and tumour formation is limited. To address this, we have created a multiscale spatial atlas of healthy skin and basal cell carcinoma (BCC), incorporating in vivo optical coherence tomography, single-cell RNA sequencing, spatial global transcriptional profiling, and in situ sequencing. Computational spatial deconvolution and projection revealed the localisation of distinct cell populations to specific tissue contexts. Although cell populations were conserved between healthy anatomical sites and in BCC, mesenchymal cell populations including fibroblasts and pericytes retained signatures of developmental origin. Spatial profiling and in silico lineage tracing support a hair follicle origin for BCC and demonstrate that cancer-associated fibroblasts are an expansion of a POSTN+ subpopulation associated with hair follicles in healthy skin. RGS5+ pericytes are also expanded in BCC suggesting a role in vascular remodelling. We propose that the identity of mesenchymal cell populations is regulated by signals emanating from adjacent structures and that these signals are repurposed to promote the expansion of skin cancer stroma. The resource we have created is publicly available in an interactive format for the research community.
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Affiliation(s)
- Clarisse Ganier
- Centre for Gene Therapy and Regenerative Medicine, King’s College London, Guy’s Hospital, LondonSE1 9RT, United Kingdom
| | - Pavel Mazin
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, CambridgeCB10 1SA, United Kingdom
| | - Gabriel Herrera-Oropeza
- Centre for Developmental Neurobiology, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, LondonSE1 1UL, United Kingdom
| | - Xinyi Du-Harpur
- Centre for Gene Therapy and Regenerative Medicine, King’s College London, Guy’s Hospital, LondonSE1 9RT, United Kingdom
- The Francis Crick Institute, LondonNW1 1AT, United Kingdom
| | - Matthew Blakeley
- Centre for Gene Therapy and Regenerative Medicine, King’s College London, Guy’s Hospital, LondonSE1 9RT, United Kingdom
| | - Jeyrroy Gabriel
- Centre for Gene Therapy and Regenerative Medicine, King’s College London, Guy’s Hospital, LondonSE1 9RT, United Kingdom
| | - Alexander V. Predeus
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, CambridgeCB10 1SA, United Kingdom
| | - Batuhan Cakir
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, CambridgeCB10 1SA, United Kingdom
| | - Martin Prete
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, CambridgeCB10 1SA, United Kingdom
| | - Nasrat Harun
- Centre for Gene Therapy and Regenerative Medicine, King’s College London, Guy’s Hospital, LondonSE1 9RT, United Kingdom
| | - Jean-Francois Darrigrand
- Centre for Gene Therapy and Regenerative Medicine, King’s College London, Guy’s Hospital, LondonSE1 9RT, United Kingdom
| | - Alexander Haiser
- Centre for Gene Therapy and Regenerative Medicine, King’s College London, Guy’s Hospital, LondonSE1 9RT, United Kingdom
| | - Saranya Wyles
- Department of Dermatology, Mayo Clinic, Rochester, MN55905
| | - Tanya Shaw
- Centre for Inflammation Biology and Cancer Immunology, King’s College London, LondonSE1 1UL, United Kingdom
| | - Sarah A. Teichmann
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, CambridgeCB10 1SA, United Kingdom
- Theory of Condensed Matter Group, Cavendish Laboratory, University of Cambridge, CambridgeCB3 0HE, United Kingdom
| | - Muzlifah Haniffa
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, CambridgeCB10 1SA, United Kingdom
- Biosciences Institute, Newcastle University, Newcastle upon TyneNE2 4HH, United Kingdom
- National Institute for Health Research Newcastle Biomedical Research Centre, Newcastle Hospitals National Health Service Foundation Trust, Newcastle upon TyneNE1 4LP, United Kingdom
| | - Fiona M. Watt
- Centre for Gene Therapy and Regenerative Medicine, King’s College London, Guy’s Hospital, LondonSE1 9RT, United Kingdom
- Directors’ Unit, European Molecular Biology Laboratory, Heidelberg69117, Germany
| | - Magnus D. Lynch
- Centre for Gene Therapy and Regenerative Medicine, King’s College London, Guy’s Hospital, LondonSE1 9RT, United Kingdom
- St. John’s Institute of Dermatology, King’s College London, Guy’s Hospital, LondonSE1 9RT, United Kingdom
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16
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Lee J, Kwon J, Jo YJ, Yoon SB, Hyeon JH, Park BJ, You HJ, Youn C, Kim Y, Choi HW, Kim JS. Particulate matter 10 induces oxidative stress and apoptosis in rhesus macaques skin fibroblast. PeerJ 2023; 11:e16589. [PMID: 38130933 PMCID: PMC10734408 DOI: 10.7717/peerj.16589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 11/14/2023] [Indexed: 12/23/2023] Open
Abstract
Background Particulate matter (PM) is a major air pollutant that affects human health worldwide. PM can pass through the skin barrier, thus causing skin diseases such as heat rash, allergic reaction, infection, or inflammation. However, only a few studies have been conducted on the cytotoxic effects of PM exposure on large-scale animals. Therefore, herein, we investigated whether and how PM affects rhesus macaque skin fibroblasts. Methods Rhesus macaque skin fibroblasts were treated with various concentrations of PM10 (1, 5, 10, 50, and 100 μg/mL) and incubated for 24, 48, and 72 h. Then, cell viability assay, TUNEL assay, and qRT-PCR were performed on the treated cells. Further, the reactive oxygen species, glutathione, and cathepsin B levels were determined. The MTT assay revealed that PM10 (>50 μg/mL) proportionately reduced the cell proliferation rate. Results PM10 treatment increased TUNEL-positive cell numbers, following the pro-apoptosis-associated genes (CASP3 and BAX) and tumor suppressor gene TP53 were significantly upregulated. PM10 treatment induced reactive oxidative stress. Cathepsin B intensity was increased, whereas GSH intensity was decreased. The mRNA expression levels of antioxidant enzyme-related genes (CAT, GPX1 and GPX3) were significantly upregulated. Furthermore, PM10 reduced the mitochondrial membrane potential. The mRNA expression of mitochondrial complex genes, such as NDUFA1, NDUFA2, NDUFAC2, NDUFS4, and ATP5H were also significantly upregulated. In conclusion, these results showed that PM10 triggers apoptosis and mitochondrial damage, thus inducing ROS accumulation. These findings provide potential information on the cytotoxic effects of PM10 treatment and help to understand the mechanism of air pollution-induced skin diseases.
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Affiliation(s)
- Jiin Lee
- Primate Resources Center, Korea Research Institute of Bioscience and Biotechnology, Jeongup-si, Republic of Korea
- Department of Animal Science, Jeonbuk National University, Jeonju, Jeollabuk-do, Republic of Korea
| | - Jeongwoo Kwon
- Primate Resources Center, Korea Research Institute of Bioscience and Biotechnology, Jeongup-si, Republic of Korea
| | - Yu-Jin Jo
- Primate Resources Center, Korea Research Institute of Bioscience and Biotechnology, Jeongup-si, Republic of Korea
| | - Seung-Bin Yoon
- Primate Resources Center, Korea Research Institute of Bioscience and Biotechnology, Jeongup-si, Republic of Korea
| | - Jae-Hwan Hyeon
- Primate Resources Center, Korea Research Institute of Bioscience and Biotechnology, Jeongup-si, Republic of Korea
| | - Beom-Jin Park
- Primate Resources Center, Korea Research Institute of Bioscience and Biotechnology, Jeongup-si, Republic of Korea
| | - Hyeong-Ju You
- Primate Resources Center, Korea Research Institute of Bioscience and Biotechnology, Jeongup-si, Republic of Korea
| | - Changsic Youn
- Primate Resources Center, Korea Research Institute of Bioscience and Biotechnology, Jeongup-si, Republic of Korea
| | - Yejin Kim
- Primate Resources Center, Korea Research Institute of Bioscience and Biotechnology, Jeongup-si, Republic of Korea
| | - Hyun Woo Choi
- Department of Animal Science, Jeonbuk National University, Jeonju, Jeollabuk-do, Republic of Korea
| | - Ji-Su Kim
- Primate Resources Center, Korea Research Institute of Bioscience and Biotechnology, Jeongup-si, Republic of Korea
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17
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Bai R, Guo Y, Liu W, Song Y, Yu Z, Ma X. The Roles of WNT Signaling Pathways in Skin Development and Mechanical-Stretch-Induced Skin Regeneration. Biomolecules 2023; 13:1702. [PMID: 38136575 PMCID: PMC10741662 DOI: 10.3390/biom13121702] [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: 10/16/2023] [Revised: 11/10/2023] [Accepted: 11/14/2023] [Indexed: 12/24/2023] Open
Abstract
The WNT signaling pathway plays a critical role in a variety of biological processes, including development, adult tissue homeostasis maintenance, and stem cell regulation. Variations in skin conditions can influence the expression of the WNT signaling pathway. In light of the above, a deeper understanding of the specific mechanisms of the WNT signaling pathway in different physiological and pathological states of the skin holds the potential to significantly advance clinical treatments of skin-related diseases. In this review, we present a comprehensive analysis of the molecular and cellular mechanisms of the WNT signaling pathway in skin development, wound healing, and mechanical stretching. Our review sheds new light on the crucial role of the WNT signaling pathway in the regulation of skin physiology and pathology.
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Affiliation(s)
- Ruoxue Bai
- Department of Plastic Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China
| | - Yaotao Guo
- Department of Plastic Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China
- Department of The Cadet Team 6, School of Basic Medicine, Fourth Military Medical University, Xi’an 710032, China
| | - Wei Liu
- Department of Plastic Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China
| | - Yajuan Song
- Department of Plastic Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China
| | - Zhou Yu
- Department of Plastic Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China
| | - Xianjie Ma
- Department of Plastic Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, China
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18
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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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19
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Correa-Gallegos D, Ye H, Dasgupta B, Sardogan A, Kadri S, Kandi R, Dai R, Lin Y, Kopplin R, Shenai DS, Wannemacher J, Ichijo R, Jiang D, Strunz M, Ansari M, Angelidis I, Schiller HB, Volz T, Machens HG, Rinkevich Y. CD201 + fascia progenitors choreograph injury repair. Nature 2023; 623:792-802. [PMID: 37968392 PMCID: PMC10665192 DOI: 10.1038/s41586-023-06725-x] [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: 08/29/2022] [Accepted: 10/09/2023] [Indexed: 11/17/2023]
Abstract
Optimal tissue recovery and organismal survival are achieved by spatiotemporal tuning of tissue inflammation, contraction and scar formation1. Here we identify a multipotent fibroblast progenitor marked by CD201 expression in the fascia, the deepest connective tissue layer of the skin. Using skin injury models in mice, single-cell transcriptomics and genetic lineage tracing, ablation and gene deletion models, we demonstrate that CD201+ progenitors control the pace of wound healing by generating multiple specialized cell types, from proinflammatory fibroblasts to myofibroblasts, in a spatiotemporally tuned sequence. We identified retinoic acid and hypoxia signalling as the entry checkpoints into proinflammatory and myofibroblast states. Modulating CD201+ progenitor differentiation impaired the spatiotemporal appearances of fibroblasts and chronically delayed wound healing. The discovery of proinflammatory and myofibroblast progenitors and their differentiation pathways provide a new roadmap to understand and clinically treat impaired wound healing.
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Affiliation(s)
| | - Haifeng Ye
- Institute of Regenerative Biology and Medicine (IRBM), Helmholtz Munich, Munich, Germany
| | - Bikram Dasgupta
- Institute of Regenerative Biology and Medicine (IRBM), Helmholtz Munich, Munich, Germany
| | - Aydan Sardogan
- Institute of Regenerative Biology and Medicine (IRBM), Helmholtz Munich, Munich, Germany
| | - Safwen Kadri
- Institute of Regenerative Biology and Medicine (IRBM), Helmholtz Munich, Munich, Germany
| | - Ravinder Kandi
- Institute of Regenerative Biology and Medicine (IRBM), Helmholtz Munich, Munich, Germany
| | - Ruoxuan Dai
- Institute of Regenerative Biology and Medicine (IRBM), Helmholtz Munich, Munich, Germany
| | - Yue Lin
- Institute of Regenerative Biology and Medicine (IRBM), Helmholtz Munich, Munich, Germany
| | - Robert Kopplin
- Institute of Regenerative Biology and Medicine (IRBM), Helmholtz Munich, Munich, Germany
| | - Disha Shantaram Shenai
- Institute of Regenerative Biology and Medicine (IRBM), Helmholtz Munich, Munich, Germany
| | - Juliane Wannemacher
- Institute of Regenerative Biology and Medicine (IRBM), Helmholtz Munich, Munich, Germany
| | - Ryo Ichijo
- Institute of Regenerative Biology and Medicine (IRBM), Helmholtz Munich, Munich, Germany
| | - Dongsheng Jiang
- Institute of Regenerative Biology and Medicine (IRBM), Helmholtz Munich, Munich, Germany
| | - Maximilian Strunz
- Member of the German Centre for Lung Research (DZL), Comprehensive Pneumology Center (CPC) and Institute of Lung Health and Immunity (LHI), Helmholtz Munich, Munich, Germany
| | - Meshal Ansari
- Member of the German Centre for Lung Research (DZL), Comprehensive Pneumology Center (CPC) and Institute of Lung Health and Immunity (LHI), Helmholtz Munich, Munich, Germany
| | - Illias Angelidis
- Member of the German Centre for Lung Research (DZL), Comprehensive Pneumology Center (CPC) and Institute of Lung Health and Immunity (LHI), Helmholtz Munich, Munich, Germany
| | - Herbert B Schiller
- Member of the German Centre for Lung Research (DZL), Comprehensive Pneumology Center (CPC) and Institute of Lung Health and Immunity (LHI), Helmholtz Munich, Munich, Germany
- Institute of Experimental Pneumology, Ludwig-Maximilians University Hospital, Munich, Germany
| | - Thomas Volz
- Klinikum rechts der Isar, Department of Dermatology, School of Medicine, Technical University of Munich, Munich, Germany
| | - Hans-Günther Machens
- Klinikum rechts der Isar, Department of Plastic and Hand Surgery, School of Medicine, Technical University of Munich, Munich, Germany
| | - Yuval Rinkevich
- Institute of Regenerative Biology and Medicine (IRBM), Helmholtz Munich, Munich, Germany.
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20
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Wang Y, Wu J, Chen J, Lu C, Liang J, Shan Y, Liu J, Li Q, Miao L, He M, Wang X, Zhang J, Wu Z. Mesenchymal stem cells paracrine proteins from three-dimensional dynamic culture system promoted wound healing in third-degree burn models. Bioeng Transl Med 2023; 8:e10569. [PMID: 38023693 PMCID: PMC10658564 DOI: 10.1002/btm2.10569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 05/30/2023] [Accepted: 06/10/2023] [Indexed: 12/01/2023] Open
Abstract
Recovery of skin function remains a significant clinical challenge for deep burns owing to the severe scar formation and poor appendage regeneration, and stem cell therapy has shown great potential for injured tissue regeneration. Here, a cell-free therapy system for deep burn skin was explored using mesenchymal stem cell paracrine proteins (MSC-PP) and polyethylene glycol (PEG) temperature-sensitive hydrogels. A three-dimensional (3D) dynamic culture system for MSCs' large-scale expansion was established using a porous gelatin microcarrier crosslinked with hyaluronic acid (PGM-HA), and the purified MSC-PP from culture supernatant was characterized by mass spectrometric analysis. The results showed the 3D dynamic culture system regulated MSCs cell cycle, reduced apoptosis, and decreased lactic acid content, and the MSC-PP produced in 3D group can promote cell proliferation, migration, and adhesion. The MSC-PP + PEG system maintained stable release in 28 days of observation in vitro. The in vivo therapeutic efficacy was investigated in the rabbit's third-degree burn model, and saline, PEG, MSC-PP, and MSC-PP + PEG treatments groups were set. The in vivo results showed that the MSC-PP + PEG group significantly improved wound healing, inhibited scar formation, and facilitated skin appendage regeneration. In conclusion, the MSC-PP + PEG sustained-release system provides a potentially effective treatment for deep burn skin healing.
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Affiliation(s)
- Yingwei Wang
- Department of OphthalmologyThe First Affiliated Hospital of Jinan UniversityGuangzhouChina
- Key Laboratory for Regenerative Medicine, Ministry of Education, Department of Developmental and Regenerative BiologyJinan UniversityGuangzhouChina
| | - Jiaxin Wu
- Key Laboratory for Regenerative Medicine, Ministry of Education, Department of Developmental and Regenerative BiologyJinan UniversityGuangzhouChina
| | - Jiamin Chen
- Key Laboratory for Regenerative Medicine, Ministry of Education, Department of Developmental and Regenerative BiologyJinan UniversityGuangzhouChina
| | - Cheng Lu
- Key Laboratory for Regenerative Medicine, Ministry of Education, Department of Developmental and Regenerative BiologyJinan UniversityGuangzhouChina
| | - Jinchao Liang
- Key Laboratory for Regenerative Medicine, Ministry of Education, Department of Developmental and Regenerative BiologyJinan UniversityGuangzhouChina
| | - Yingyi Shan
- Key Laboratory for Regenerative Medicine, Ministry of Education, Department of Developmental and Regenerative BiologyJinan UniversityGuangzhouChina
| | - Jie Liu
- Key Laboratory for Regenerative Medicine, Ministry of Education, Department of Developmental and Regenerative BiologyJinan UniversityGuangzhouChina
| | - Qi Li
- Key Laboratory for Regenerative Medicine, Ministry of Education, Department of Developmental and Regenerative BiologyJinan UniversityGuangzhouChina
| | - Liang Miao
- Burn plastic surgeryLonggang Central HospitalShenzhenChina
| | - Mu He
- Burn plastic surgeryLonggang Central HospitalShenzhenChina
| | - Xiaoying Wang
- Department of Biomedical EngineeringJinan UniversityGuangzhouChina
| | - Jianhua Zhang
- Special WardsThe First Affiliated Hospital of Jinan UniversityGuangzhouChina
| | - Zheng Wu
- Key Laboratory for Regenerative Medicine, Ministry of Education, Department of Developmental and Regenerative BiologyJinan UniversityGuangzhouChina
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21
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He CC, Song TC, Qi RQ, Gao XH. Integrated single-cell and spatial transcriptomics reveals heterogeneity of fibroblast and pivotal genes in psoriasis. Sci Rep 2023; 13:17134. [PMID: 37816883 PMCID: PMC10564713 DOI: 10.1038/s41598-023-44346-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Accepted: 10/06/2023] [Indexed: 10/12/2023] Open
Abstract
Psoriasis, which is one of the most common skin diseases, involves an array of complex immune constituents including T cells, dendritic cells and monocytes. Particularly, the cytokine IL17A, primarily generated by TH17 cells, assumes a crucial function in the etiology of psoriasis. In this study, a comprehensive investigation utilizing bulk RNA analysis, single-cell RNA sequencing, and spatial transcriptomics was employed to elucidate the underlying mechanisms of psoriasis. Our study revealed that there is an overlap between the genes that are differentially expressed in psoriasis patients receiving three anti-IL17A monoclonal antibody drugs and the genes that are differentially expressed in lesion versus non-lesion samples in these patients. Further analysis using single-cell and spatial data from psoriasis samples confirmed the expression of hub genes that had low expressions in psoriasis tissue but were up-regulated after anti-IL17A treatments. These genes were found to be associated with the treatment effects of brodalumab and methotrexate, but not adalimumab, etanercept, and ustekinumab. Additionally, these genes were predominantly expressed in fibroblasts. In our study, fibroblasts were categorized into five clusters. Notably, hub genes exhibited predominant expression in cluster 3 fibroblasts, which were primarily engaged in the regulation of the extracellular matrix and were predominantly located in the reticular dermis. Subsequent analysis unveiled that cluster 3 fibroblasts also established communication with epithelial cells and monocytes via the ANGPTL-SDC4 ligand-receptor configuration, and their regulation was governed by the transcription factor TWIST1. Conversely, cluster 4 fibroblasts, responsible for vascular endothelial regulation, were predominantly distributed in the papillary dermis. Cluster 4 predominantly engaged in interactions with endothelial cells via MDK signals and was governed by the distinctive transcription factor, ERG. By means of an integrated analysis encompassing bulk transcriptomics, single-cell RNA sequencing, and spatial transcriptomics, we have discerned genes and clusters of fibroblasts that potentially contribute to the pathogenesis of psoriasis.
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Affiliation(s)
- Cong-Cong He
- Department of Dermatology, The First Hospital of China Medical University and Key Laboratory of Immunodermatology, Ministry of Health and Ministry of Education, No.155 Nanjing Bei Street, Heping District, Shenyang, 110001, Liaoning, People's Republic of China
| | - Tian-Cong Song
- Department of Nuclear Medicine, Shengjing Hospital of China Medical University, Shenyang, 110004, People's Republic of China
| | - Rui-Qun Qi
- Department of Dermatology, The First Hospital of China Medical University and Key Laboratory of Immunodermatology, Ministry of Health and Ministry of Education, No.155 Nanjing Bei Street, Heping District, Shenyang, 110001, Liaoning, People's Republic of China
| | - Xing-Hua Gao
- Department of Dermatology, The First Hospital of China Medical University and Key Laboratory of Immunodermatology, Ministry of Health and Ministry of Education, No.155 Nanjing Bei Street, Heping District, Shenyang, 110001, Liaoning, People's Republic of China.
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22
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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: 0] [Impact Index Per Article: 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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23
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Yang W, Wang P, Luo M, Cai Y, Xu C, Xue G, Jin X, Cheng R, Que J, Pang F, Yang Y, Nie H, Jiang Q, Liu Z, Xu Z. DeepCCI: a deep learning framework for identifying cell-cell interactions from single-cell RNA sequencing data. Bioinformatics 2023; 39:btad596. [PMID: 37740953 PMCID: PMC10558043 DOI: 10.1093/bioinformatics/btad596] [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: 05/23/2023] [Revised: 08/29/2023] [Accepted: 09/22/2023] [Indexed: 09/25/2023] Open
Abstract
MOTIVATION Cell-cell interactions (CCIs) play critical roles in many biological processes such as cellular differentiation, tissue homeostasis, and immune response. With the rapid development of high throughput single-cell RNA sequencing (scRNA-seq) technologies, it is of high importance to identify CCIs from the ever-increasing scRNA-seq data. However, limited by the algorithmic constraints, current computational methods based on statistical strategies ignore some key latent information contained in scRNA-seq data with high sparsity and heterogeneity. RESULTS Here, we developed a deep learning framework named DeepCCI to identify meaningful CCIs from scRNA-seq data. Applications of DeepCCI to a wide range of publicly available datasets from diverse technologies and platforms demonstrate its ability to predict significant CCIs accurately and effectively. Powered by the flexible and easy-to-use software, DeepCCI can provide the one-stop solution to discover meaningful intercellular interactions and build CCI networks from scRNA-seq data. AVAILABILITY AND IMPLEMENTATION The source code of DeepCCI is available online at https://github.com/JiangBioLab/DeepCCI.
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Affiliation(s)
- Wenyi Yang
- School of Life Science and Technology, Harbin Institute of Technology, Harbin 150006, China
| | - Pingping Wang
- School of Life Science and Technology, Harbin Institute of Technology, Harbin 150006, China
| | - Meng Luo
- School of Life Science and Technology, Harbin Institute of Technology, Harbin 150006, China
| | - Yideng Cai
- School of Life Science and Technology, Harbin Institute of Technology, Harbin 150006, China
| | - Chang Xu
- School of Life Science and Technology, Harbin Institute of Technology, Harbin 150006, China
| | - Guangfu Xue
- School of Life Science and Technology, Harbin Institute of Technology, Harbin 150006, China
| | - Xiyun Jin
- School of Life Science and Technology, Harbin Institute of Technology, Harbin 150006, China
| | - Rui Cheng
- School of Life Science and Technology, Harbin Institute of Technology, Harbin 150006, China
| | - Jinhao Que
- School of Life Science and Technology, Harbin Institute of Technology, Harbin 150006, China
| | - Fenglan Pang
- School of Life Science and Technology, Harbin Institute of Technology, Harbin 150006, China
| | - Yuexin Yang
- School of Life Science and Technology, Harbin Institute of Technology, Harbin 150006, China
| | - Huan Nie
- School of Life Science and Technology, Harbin Institute of Technology, Harbin 150006, China
| | - Qinghua Jiang
- School of Life Science and Technology, Harbin Institute of Technology, Harbin 150006, China
| | - Zhigang Liu
- Affiliated Foshan Maternity & Child Healthcare Hospital, Southern Medical University, Guangzhou 510515, China
| | - Zhaochun Xu
- School of Life Science and Technology, Harbin Institute of Technology, Harbin 150006, China
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24
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Wang Y, Zhang Y, Li T, Shen K, Wang KJ, Tian C, Hu D. Adipose Mesenchymal Stem Cell Derived Exosomes Promote Keratinocytes and Fibroblasts Embedded in Collagen/Platelet-Rich Plasma Scaffold and Accelerate Wound Healing. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2303642. [PMID: 37342075 DOI: 10.1002/adma.202303642] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 06/11/2023] [Indexed: 06/22/2023]
Abstract
Engineered skin substitutes derived from human skin significantly reduce inflammatory reactions mediated by foreign/artificial materials and are consequently easier to use for clinical application. Type I collagen is a main component of the extracellular matrix during wound healing and has excellent biocompatibility, and platelet-rich plasma can be used as the initiator of the healing cascade. Adipose mesenchymal stem cell derived exosomes are crucial for tissue repair and play key roles in enhancing cell regeneration, promoting angiogenesis, regulating inflammation, and remodeling extracellular matrix. Herein, Type I collagen and platelet-rich plasma, which provide natural supports for keratinocyte and fibroblast adhesion, migration, and proliferation, are mixed to form a stable 3D scaffold. Adipose mesenchymal stem cell derived exosomes are added to the scaffold to improve the performance of the engineered skin. The physicochemical properties of this cellular scaffold are analyzed, and the repair effect is evaluated in a full-thickness skin defect mouse model. The cellular scaffold reduces the level of inflammation and promotes cell proliferation and angiogenesis to accelerate wound healing. Proteomic analysis shows that exosomes exhibit excellent anti-inflammatory and proangiogenic effects in collagen/platelet-rich plasma scaffolds. The proposed method provides a new therapeutic strategy and theoretical basis for tissue regeneration and wound repair.
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Affiliation(s)
- Yunchuan Wang
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Fourth Military Medical University, 127 Changle West Road, Xi'an, Shaanxi, 710032, P. R. China
| | - Yue Zhang
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Fourth Military Medical University, 127 Changle West Road, Xi'an, Shaanxi, 710032, P. R. China
| | - Ting Li
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Fourth Military Medical University, 127 Changle West Road, Xi'an, Shaanxi, 710032, P. R. China
| | - Kuo Shen
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Fourth Military Medical University, 127 Changle West Road, Xi'an, Shaanxi, 710032, P. R. China
| | - Ke Jia Wang
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Fourth Military Medical University, 127 Changle West Road, Xi'an, Shaanxi, 710032, P. R. China
| | - Chenyang Tian
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Fourth Military Medical University, 127 Changle West Road, Xi'an, Shaanxi, 710032, P. R. China
| | - Dahai Hu
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Fourth Military Medical University, 127 Changle West Road, Xi'an, Shaanxi, 710032, P. R. China
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25
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Riddell J, Noureen SR, Sedda L, Glover JD, Ho WKW, Bain CA, Berbeglia A, Brown H, Anderson C, Chen Y, Crichton ML, Yates CA, Mort RL, Headon DJ. Rapid mechanosensitive migration and dispersal of newly divided mesenchymal cells aid their recruitment into dermal condensates. PLoS Biol 2023; 21:e3002316. [PMID: 37747910 PMCID: PMC10553821 DOI: 10.1371/journal.pbio.3002316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 10/05/2023] [Accepted: 08/29/2023] [Indexed: 09/27/2023] Open
Abstract
Embryonic mesenchymal cells are dispersed within an extracellular matrix but can coalesce to form condensates with key developmental roles. Cells within condensates undergo fate and morphological changes and induce cell fate changes in nearby epithelia to produce structures including hair follicles, feathers, or intestinal villi. Here, by imaging mouse and chicken embryonic skin, we find that mesenchymal cells undergo much of their dispersal in early interphase, in a stereotyped process of displacement driven by 3 hours of rapid and persistent migration followed by a long period of low motility. The cell division plane and the elevated migration speed and persistence of newly born mesenchymal cells are mechanosensitive, aligning with tissue tension, and are reliant on active WNT secretion. This behaviour disperses mesenchymal cells and allows daughters of recent divisions to travel long distances to enter dermal condensates, demonstrating an unanticipated effect of cell cycle subphase on core mesenchymal behaviour.
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Affiliation(s)
- Jon Riddell
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Edinburgh, United Kingdom
| | - Shahzeb Raja Noureen
- Department of Mathematical Sciences, University of Bath, Claverton Down, Bath, United Kingdom
| | - Luigi Sedda
- Lancaster Ecology and Epidemiology Group, Lancaster Medical School, Lancaster University, Lancaster, United Kingdom
| | - James D. Glover
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Edinburgh, United Kingdom
| | - William K. W. Ho
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Edinburgh, United Kingdom
| | - Connor A. Bain
- School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh, United Kingdom
| | - Arianna Berbeglia
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Edinburgh, United Kingdom
| | - Helen Brown
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Edinburgh, United Kingdom
| | - Calum Anderson
- School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh, United Kingdom
| | - Yuhang Chen
- School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh, United Kingdom
| | - Michael L. Crichton
- School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh, United Kingdom
| | - Christian A. Yates
- Department of Mathematical Sciences, University of Bath, Claverton Down, Bath, United Kingdom
| | - Richard L. Mort
- Division of Biomedical and Life Sciences, Faculty of Health and Medicine, Lancaster University, Lancaster, United Kingdom
| | - Denis J. Headon
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Edinburgh, United Kingdom
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26
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Knoedler S, Broichhausen S, Guo R, Dai R, Knoedler L, Kauke-Navarro M, Diatta F, Pomahac B, Machens HG, Jiang D, Rinkevich Y. Fibroblasts - the cellular choreographers of wound healing. Front Immunol 2023; 14:1233800. [PMID: 37646029 PMCID: PMC10461395 DOI: 10.3389/fimmu.2023.1233800] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Accepted: 07/28/2023] [Indexed: 09/01/2023] Open
Abstract
Injuries to our skin trigger a cascade of spatially- and temporally-synchronized healing processes. During such endogenous wound repair, the role of fibroblasts is multifaceted, ranging from the activation and recruitment of innate immune cells through the synthesis and deposition of scar tissue to the conveyor belt-like transport of fascial connective tissue into wounds. A comprehensive understanding of fibroblast diversity and versatility in the healing machinery may help to decipher wound pathologies whilst laying the foundation for novel treatment modalities. In this review, we portray the diversity of fibroblasts and delineate their unique wound healing functions. In addition, we discuss future directions through a clinical-translational lens.
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Affiliation(s)
- Samuel Knoedler
- Department of Plastic Surgery and Hand Surgery, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany
- Division of Plastic Surgery, Department of Surgery, Yale School of Medicine, New Haven, CT, United States
- Division of Plastic Surgery, Department of Surgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United States
- Institute of Regenerative Biology and Medicine, Helmholtz Zentrum München, Munich, Germany
| | - Sonja Broichhausen
- Department of Hand, Plastic and Reconstructive Surgery, Microsurgery, Burn Trauma Center, BG Trauma Center Ludwigshafen, University of Heidelberg, Ludwigshafen, Germany
| | - Ruiji Guo
- Department of Plastic Surgery and Hand Surgery, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany
- Institute of Regenerative Biology and Medicine, Helmholtz Zentrum München, Munich, Germany
| | - Ruoxuan Dai
- Institute of Regenerative Biology and Medicine, Helmholtz Zentrum München, Munich, Germany
| | - Leonard Knoedler
- Division of Plastic Surgery, Department of Surgery, Yale School of Medicine, New Haven, CT, United States
| | - Martin Kauke-Navarro
- Division of Plastic Surgery, Department of Surgery, Yale School of Medicine, New Haven, CT, United States
| | - Fortunay Diatta
- Division of Plastic Surgery, Department of Surgery, Yale School of Medicine, New Haven, CT, United States
| | - Bohdan Pomahac
- Division of Plastic Surgery, Department of Surgery, Yale School of Medicine, New Haven, CT, United States
| | - Hans-Guenther Machens
- Department of Plastic Surgery and Hand Surgery, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany
| | - Dongsheng Jiang
- Institute of Regenerative Biology and Medicine, Helmholtz Zentrum München, Munich, Germany
| | - Yuval Rinkevich
- Institute of Regenerative Biology and Medicine, Helmholtz Zentrum München, Munich, Germany
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27
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Parker JB, Valencia C, Akras D, DiIorio SE, Griffin MF, Longaker MT, Wan DC. Understanding Fibroblast Heterogeneity in Form and Function. Biomedicines 2023; 11:2264. [PMID: 37626760 PMCID: PMC10452440 DOI: 10.3390/biomedicines11082264] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 08/09/2023] [Accepted: 08/11/2023] [Indexed: 08/27/2023] Open
Abstract
Historically believed to be a homogeneous cell type that is often overlooked, fibroblasts are more and more understood to be heterogeneous in nature. Though the mechanisms behind how fibroblasts participate in homeostasis and pathology are just beginning to be understood, these cells are believed to be highly dynamic and play key roles in fibrosis and remodeling. Focusing primarily on fibroblasts within the skin and during wound healing, we describe the field's current understanding of fibroblast heterogeneity in form and function. From differences due to embryonic origins to anatomical variations, we explore the diverse contributions that fibroblasts have in fibrosis and plasticity. Following this, we describe molecular techniques used in the field to provide deeper insights into subpopulations of fibroblasts and their varied roles in complex processes such as wound healing. Limitations to current work are also discussed, with a focus on future directions that investigators are recommended to take in order to gain a deeper understanding of fibroblast biology and to develop potential targets for translational applications in a clinical setting.
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Affiliation(s)
- Jennifer B. Parker
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA (M.F.G.)
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Caleb Valencia
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA (M.F.G.)
| | - Deena Akras
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA (M.F.G.)
| | - Sarah E. DiIorio
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA (M.F.G.)
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Michelle F. Griffin
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA (M.F.G.)
| | - Michael T. Longaker
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA (M.F.G.)
| | - Derrick C. Wan
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA (M.F.G.)
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28
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Cherkashina OL, Morgun EI, Rippa AL, Kosykh AV, Alekhnovich AV, Stoliarzh AB, Terskikh VV, Vorotelyak EA, Kalabusheva EP. Blank Spots in the Map of Human Skin: The Challenge for Xenotransplantation. Int J Mol Sci 2023; 24:12769. [PMID: 37628950 PMCID: PMC10454653 DOI: 10.3390/ijms241612769] [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: 06/28/2023] [Revised: 08/02/2023] [Accepted: 08/09/2023] [Indexed: 08/27/2023] Open
Abstract
Most of the knowledge about human skin homeostasis, development, wound healing, and diseases has been accumulated from human skin biopsy analysis by transferring from animal models and using different culture systems. Human-to-mouse xenografting is one of the fundamental approaches that allows the skin to be studied in vivo and evaluate the ongoing physiological processes in real time. Humanized animals permit the actual techniques for tracing cell fate, clonal analysis, genetic modifications, and drug discovery that could never be employed in humans. This review recapitulates the novel facts about mouse skin self-renewing, regeneration, and pathology, raises issues regarding the gaps in our understanding of the same options in human skin, and postulates the challenges for human skin xenografting.
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Affiliation(s)
- Olga L. Cherkashina
- Laboratory of Cell Biology, Koltzov Institute of Developmental Biology, Russian Academy of Sciences, 119334 Moscow, Russia
| | - Elena I. Morgun
- Laboratory of Cell Biology, Koltzov Institute of Developmental Biology, Russian Academy of Sciences, 119334 Moscow, Russia
| | - Alexandra L. Rippa
- Laboratory of Cell Biology, Koltzov Institute of Developmental Biology, Russian Academy of Sciences, 119334 Moscow, Russia
| | - Anastasiya V. Kosykh
- Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Pirogov Russian National Research Medical University, 117997 Moscow, Russia
| | - Alexander V. Alekhnovich
- Federal Government-Financed Institution “National Medical Research Center of High Medical Technologies n.a. A.A. Vishnevsky”, 143421 Krasnogorsk, Russia
| | - Aleksey B. Stoliarzh
- Federal Government-Financed Institution “National Medical Research Center of High Medical Technologies n.a. A.A. Vishnevsky”, 143421 Krasnogorsk, Russia
| | - Vasiliy V. Terskikh
- Laboratory of Cell Biology, Koltzov Institute of Developmental Biology, Russian Academy of Sciences, 119334 Moscow, Russia
| | - Ekaterina A. Vorotelyak
- Laboratory of Cell Biology, Koltzov Institute of Developmental Biology, Russian Academy of Sciences, 119334 Moscow, Russia
| | - Ekaterina P. Kalabusheva
- Laboratory of Cell Biology, Koltzov Institute of Developmental Biology, Russian Academy of Sciences, 119334 Moscow, Russia
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29
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Zhu R, Pan X, Wang S, Qiu Z, Gu C, Yao X, Li W. Updated skin transcriptomic atlas depicted by reciprocal contribution of single-nucleus RNA sequencing and single-cell RNA sequencing. J Dermatol Sci 2023; 111:22-31. [PMID: 37407342 DOI: 10.1016/j.jdermsci.2023.06.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Revised: 06/13/2023] [Accepted: 06/17/2023] [Indexed: 07/07/2023]
Abstract
BACKGROUND Single-cell RNA sequencing (scRNA-seq) has advanced our understanding of skin biology, but its utility is restricted by the requirement of fresh samples, inadequate dissociation-induced cell loss or death, and activation during tissue digestion. Single-nucleus RNA sequencing (snRNA-seq) can use frozen, hard-to-dissociate materials, which might be a promising method to circumvent the limitations of scRNA-seq for the skin tissue. OBJECTIVE To profile skin cells using snRNA-seq in parallel with scRNA-seq. METHODS We performed snRNA-seq in parallel with scRNA-seq for the bisected skin sample of one person and integrated previously published scRNA-seq data for analysis. We comparatively analyzed the differences in cell proportions and gene expression between the two methods. The differentiation trajectories of keratinocytes and fibroblasts were analyzed by Slingshot analysis. RESULTS snRNA-seq was less susceptible to contamination from mitochondrial and ribosomal RNA, and exhibited a greater capacity to detect transcription factors. snRNA-seq identified more spatially and functionally relevant keratinocyte clusters that constitute cell trajectories with expected differentiation dynamics. Novel markers, e.g., LYPD3, EMP2, and CSTB, were revealed for different differentiation stages of keratinocytes, and NFIB and GRHL1 were identified as transcription factors involving in the proliferation and functional differentiation of keratinocytes. Fibroblasts were found in a state of activation in scRNA-seq. And scRNA-seq detected a greater number of immune cells. CONCLUSIONS We generated an updated atlas of the skin transcriptome based on the reciprocal contribution of scRNA-seq and snRNA-seq.
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Affiliation(s)
- Ronghui Zhu
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai Institute of Dermatology, Shanghai, China
| | - Xiaoyu Pan
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai Institute of Dermatology, Shanghai, China
| | - Shangshang Wang
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai Institute of Dermatology, Shanghai, China
| | - Zhuoqiong Qiu
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai Institute of Dermatology, Shanghai, China
| | - Chaoying Gu
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai Institute of Dermatology, Shanghai, China
| | - Xu Yao
- Department of Allergy and Rheumatology, Jiangsu Key Laboratory of Molecular Biology for Skin Diseases and STIs, Hospital for Skin Diseases, Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing, China
| | - Wei Li
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai Institute of Dermatology, Shanghai, China.
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30
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Wen D, Gao Y, Liu Y, Ho C, Sun J, Huang L, Liu Y, Li Q, Zhang Y. Matrix stiffness-induced α-tubulin acetylation is required for skin fibrosis formation through activation of Yes-associated protein. MedComm (Beijing) 2023; 4:e319. [PMID: 37457658 PMCID: PMC10338853 DOI: 10.1002/mco2.319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 05/30/2023] [Accepted: 06/02/2023] [Indexed: 07/18/2023] Open
Abstract
Skin fibrosis, a pathological process featured by fibroblast activation and extracellular matrix (ECM) deposition, makes a significant contribution to morbidity. Studies have identified biomechanics as the central element in the complex network of fibrogenesis that drives the profibrotic feedback loop. In this study, we found that the acetylation of α-tubulin at lysine 40 (K40) was augmented in fibrotic skin tissues. Further analysis showed that α-tubulin acetylation is required for fibroblast activation, including contraction, migration, and ECM deposition. More importantly, we revealed that biomechanics-induced upregulation of K40 acetylation promotes fibrosis by mediating mechanosensitive Yes-associated protein S127 dephosphorylation and its cytoplasm nucleus shuttle. Furthermore, we demonstrated that the knockdown of α-tubulin acetyltransferase 1 could rescue the K40 acetylation upregulation caused by increased matrix rigidity and ameliorate skin fibrosis both in vivo and in vitro. Herein, we highlight the critical role of α-tubulin acetylation in matrix stiffness-induced skin fibrosis and clarify a possible molecular mechanism. Our research suggests α-tubulin acetylation as a potential target for drug design and therapeutic intervention.
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Affiliation(s)
- Dongsheng Wen
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's HospitalShanghai Jiao Tong University School of MedicineShanghaiChina
| | - Ya Gao
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's HospitalShanghai Jiao Tong University School of MedicineShanghaiChina
| | - Yangdan Liu
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's HospitalShanghai Jiao Tong University School of MedicineShanghaiChina
| | - Chiakang Ho
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's HospitalShanghai Jiao Tong University School of MedicineShanghaiChina
| | - Jiaming Sun
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's HospitalShanghai Jiao Tong University School of MedicineShanghaiChina
| | - Lu Huang
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's HospitalShanghai Jiao Tong University School of MedicineShanghaiChina
| | - Yuxin Liu
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's HospitalShanghai Jiao Tong University School of MedicineShanghaiChina
| | - Qingfeng Li
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's HospitalShanghai Jiao Tong University School of MedicineShanghaiChina
| | - Yifan Zhang
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's HospitalShanghai Jiao Tong University School of MedicineShanghaiChina
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31
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Alonso-Juarranz M, Mascaraque M, Carrasco E, Gracia-Cazaña T, De La Sen O, Gilaberte Y, Gonzalez S, Juarranz Á, Falahat F. The Distinctive Features behind the Aggressiveness of Oral and Cutaneous Squamous Cell Carcinomas. Cancers (Basel) 2023; 15:3227. [PMID: 37370836 DOI: 10.3390/cancers15123227] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 06/07/2023] [Accepted: 06/12/2023] [Indexed: 06/29/2023] Open
Abstract
Squamous cell carcinomas arise from stratified squamous epithelia. Here, a comparative analysis based on recent studies defining the genetic alterations and composition of the stroma of oral and cutaneous squamous cell carcinomas (OSCC and CSCC, respectively) was performed. Both carcinomas share some but not all histological and genetic features. This review was focused on how mutations in tumor suppressor genes and protooncogenes cooperate to determine the differentiation, aggressiveness, and metastatic potential of OSCC and CSCC. In fact, driver mutations in tumor suppressor genes are more frequently observed in OSCC than CSCC. These include mutations in TP53 (encoding pP53 protein), CDKN2A (encoding cyclin dependent kinase inhibitor 2A), FAT1 (encoding FAT atypical cadherin 1), and KMT2D (encoding lysine methyltransferase 2D), with the exception of NOTCH (encoding Notch receptor 1), whose mutation frequency is lower in OSCC compared to CSCC. Finally, we describe the differential composition of the tumor microenvironment and how this influences the aggressiveness of each tumor type. Although both OSCC and CSCC tumors are highly infiltrated by immune cells, high levels of tumor-infiltrating lymphocytes (TILs) have been more frequently reported as predictors of better outcomes in OSCC than CSCC. In conclusion, OSCC and CSCC partially share genetic alterations and possess different causal factors triggering their development. The tumor microenvironment plays a key role determining the outcome of the disease.
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Affiliation(s)
- Miguel Alonso-Juarranz
- Oral and Maxillofacial Surgery Service, Hospital Clínico San Carlos, 28040 Madrid, Spain
- Surgery Department, Faculty of Medicine, Universidad Complutense, 28040 Madrid, Spain
| | - Marta Mascaraque
- Department of Biology, Universidad Autónoma de Madrid, 28049 Madrid, Spain
- Translational Research Unit, Miguel Servet University Hospital, Instituto Investigación Sanitaria Aragón (IIS), 50009 Zaragoza, Spain
| | - Elisa Carrasco
- Department of Biology, Universidad Autónoma de Madrid, 28049 Madrid, Spain
- Department of Experimental Dermatology and Skin Biology, Instituto Ramón y Cajal de Investigación Sanitaria, IRYCIS, 28034 Madrid, Spain
| | - Tamara Gracia-Cazaña
- Department of Dermatology, Miguel Servet University Hospital, Instituto Investigación Sanitaria Aragón (IIS), 50009 Zaragoza, Spain
| | - Oscar De La Sen
- Oral and Maxillofacial Surgery Service, Hospital Clínico San Carlos, 28040 Madrid, Spain
- Surgery Department, Faculty of Medicine, Universidad Complutense, 28040 Madrid, Spain
| | - Yolanda Gilaberte
- Department of Dermatology, Miguel Servet University Hospital, Instituto Investigación Sanitaria Aragón (IIS), 50009 Zaragoza, Spain
| | - Salvador Gonzalez
- Department of Experimental Dermatology and Skin Biology, Instituto Ramón y Cajal de Investigación Sanitaria, IRYCIS, 28034 Madrid, Spain
- Department of Medicine and Medical Specialties, Universidad de Alcalá, 28871 Madrid, Spain
| | - Ángeles Juarranz
- Department of Biology, Universidad Autónoma de Madrid, 28049 Madrid, Spain
- Department of Experimental Dermatology and Skin Biology, Instituto Ramón y Cajal de Investigación Sanitaria, IRYCIS, 28034 Madrid, Spain
| | - Farzin Falahat
- Oral and Maxillofacial Surgery Service, Hospital Clínico San Carlos, 28040 Madrid, Spain
- Surgery Department, Faculty of Medicine, Universidad Complutense, 28040 Madrid, Spain
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32
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Zou Q, Yuan R, Zhang Y, Wang Y, Zheng T, Shi R, Zhang M, Li Y, Fei K, Feng R, Pan B, Zhang X, Gong Z, Zhu L, Tang G, Li M, Li X, Jiang Y. A single-cell transcriptome atlas of pig skin characterizes anatomical positional heterogeneity. eLife 2023; 12:86504. [PMID: 37276016 DOI: 10.7554/elife.86504] [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: 01/29/2023] [Accepted: 05/22/2023] [Indexed: 06/07/2023] Open
Abstract
Different anatomical locations of the body skin show differences in their gene expression patterns depending on different origins, and the inherent heterogeneous information can be maintained in adults. However, highly resolvable cellular specialization is less well characterized in different anatomical regions of the skin. Pig is regarded as an excellent model animal for human skin research in view of its similar physiology to human. In this study, single-cell RNA sequencing was performed on pig skin tissues from six different anatomical regions of Chenghua (CH) pigs, with a superior skin thickness trait, and the back site of large white (LW) pigs. We obtained 233,715 cells, representing seven cell types, among which we primarily characterized the heterogeneity of the top three cell types, including smooth muscle cells (SMCs), endothelial cells (ECs), and fibroblasts (FBs). Then, we further identified several subtypes of SMCs, ECs, and FBs, and discovered the expression patterns of site-specific genes involved in some important pathways such as the immune response and extracellular matrix (ECM) synthesis in different anatomical regions. By comparing differentially expressed genes of skin FBs among different anatomical regions, we considered TNN, COL11A1, and INHBA as candidate genes for facilitating ECM accumulation. These findings of heterogeneity in the main skin cell types from different anatomical sites will contribute to a better understanding of inherent skin information and place the potential focus on skin generation, transmission, and transplantation, paving the foundation for human skin priming.
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Affiliation(s)
- Qin Zou
- Department of Zoology, College of Life Science, Sichuan Agricultural University, Ya'an, China
| | - Rong Yuan
- Chengdu Livestock and Poultry Genetic Resources Protection Center, Chengdu, China
| | - Yu Zhang
- BGI Beijing Genome Institute, Beijing, China
| | - Yifei Wang
- Department of Zoology, College of Life Science, Sichuan Agricultural University, Ya'an, China
| | - Ting Zheng
- Department of Zoology, College of Life Science, Sichuan Agricultural University, Ya'an, China
| | - Rui Shi
- Department of Zoology, College of Life Science, Sichuan Agricultural University, Ya'an, China
| | - Mei Zhang
- Department of Zoology, College of Life Science, Sichuan Agricultural University, Ya'an, China
| | - Yujing Li
- Department of Zoology, College of Life Science, Sichuan Agricultural University, Ya'an, China
| | - Kaixin Fei
- Department of Zoology, College of Life Science, Sichuan Agricultural University, Ya'an, China
| | - Ran Feng
- Department of Zoology, College of Life Science, Sichuan Agricultural University, Ya'an, China
| | - Binyun Pan
- Department of Zoology, College of Life Science, Sichuan Agricultural University, Ya'an, China
| | - Xinyue Zhang
- Department of Zoology, College of Life Science, Sichuan Agricultural University, Ya'an, China
| | - Zhengyin Gong
- Department of Zoology, College of Life Science, Sichuan Agricultural University, Ya'an, China
| | - Li Zhu
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Guoqing Tang
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Mingzhou Li
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Xuewei Li
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Yanzhi Jiang
- Department of Zoology, College of Life Science, Sichuan Agricultural University, Ya'an, China
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33
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Ma S, Li X, Cao R, Zhan G, Fu X, Xiao R, Yang Z. Developmentally regulated expression of integrin alpha-6 distinguishes neural crest derivatives in the skin. Front Cell Dev Biol 2023; 11:1140554. [PMID: 37255601 PMCID: PMC10225710 DOI: 10.3389/fcell.2023.1140554] [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: 01/09/2023] [Accepted: 05/02/2023] [Indexed: 06/01/2023] Open
Abstract
Neural crest-derived cells play essential roles in skin function and homeostasis. However, how they interact with environmental cues and differentiate into functional skin cells remains unclear. Using a combination of single-cell data analysis, neural crest lineage tracing, and flow cytometry, we found that the expression of integrin α6 (ITGA6) in neural crest and its derivatives was developmentally regulated and that ITGA6 could serve as a functional surface marker for distinguishing neural crest derivatives in the skin. Based on the expression of ITGA6, Wnt1-Cre lineage neural crest derivatives in the skin could be categorized into three subpopulations, namely, ITGA6bright, ITGA6dim, and ITGA6neg, which were found to be Schwann cells, melanocytes, and fibroblasts, respectively. We further analyzed the signature genes and transcription factors that specifically enriched in each cell subpopulation, as well as the ligand or receptor molecules, mediating the potential interaction with other cells of the skin. Additionally, we found that Hmx1 and Lhx8 are specifically expressed in neural crest-derived fibroblasts, while Zic1 and homeobox family genes are expressed in mesoderm-derived fibroblasts, indicating the distinct development pathways of fibroblasts of different origins. Our study provides insights into the regulatory landscape of neural crest cell development and identifies potential markers that facilitate the isolation of different neural crest derivatives in the skin.
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Affiliation(s)
- Shize Ma
- Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- Key Laboratory of External Tissue and Organ Regeneration, Chinese Academy of Medical Sciences, Beijing, China
| | - Xiu Li
- Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- Key Laboratory of External Tissue and Organ Regeneration, Chinese Academy of Medical Sciences, Beijing, China
| | - Rui Cao
- Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- Key Laboratory of External Tissue and Organ Regeneration, Chinese Academy of Medical Sciences, Beijing, China
| | - Guoqin Zhan
- Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- Key Laboratory of External Tissue and Organ Regeneration, Chinese Academy of Medical Sciences, Beijing, China
| | - Xin Fu
- Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- Key Laboratory of External Tissue and Organ Regeneration, Chinese Academy of Medical Sciences, Beijing, China
| | - Ran Xiao
- Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- Key Laboratory of External Tissue and Organ Regeneration, Chinese Academy of Medical Sciences, Beijing, China
| | - Zhigang Yang
- Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- Key Laboratory of External Tissue and Organ Regeneration, Chinese Academy of Medical Sciences, Beijing, China
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34
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Yue Y, Yang J, Lu S, Ge J, Nie H, Liu K, Liu F, Li H, Yan H, Zhang T, Sun P, Sun H, Yang J, Zhou J, Cui Y. Simulated microgravity altered the proliferation, apoptosis, and extracellular matrix formation of L929 fibroblasts and the transforming growth factor-β1/Smad3 signaling pathway. Skin Res Technol 2023; 29:e13341. [PMID: 37231921 PMCID: PMC10167414 DOI: 10.1111/srt.13341] [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: 03/10/2023] [Accepted: 04/12/2023] [Indexed: 05/27/2023]
Abstract
Exposure to microgravity can adversely affect the fitness of astronauts. The integrity of the skin plays a crucial role in protecting against mechanical forces and infections, fluid imbalance, and thermal dysregulation. In brief, the skin wound may cause unknown challenges to the implementation of space missions. Wound healing is a physiological process that relies on the synergistic action of inflammatory cells, extracellular matrix (ECM), and various growth factors to maintain the integrity of skin after trauma. Fibroblasts are present almost throughout the entire process of wound repair, especially in the scar formation at the endpoint of wound healing. However, there is limited knowledge about the extent to which fibroblasts are affected by the lack of gravity during wound healing. In this study, we utilized the rotary cell culture system, a ground-based facility that mimics the weightless condition, to study the alterations of L929 fibroblast cells under simulated microgravity (SMG). Our results demonstrated that the SM condition exerted negative influences on the proliferation and ECM formation of the L929 fibroblast. Whereas, the apoptosis of fibroblast was significantly upregulated upon exposure to SMG conditions. Moreover, the transforming growth factor-β1/Smad3 (TGF-β1/smad3) signaling pathway of L929 fibroblast related to wound repair was also altered significantly under a weightless environment. Overall, our study provided evidence that fibroblasts are strongly sensitive to SMG and elucidated the potential value of the TGF-β1/Smad3 signaling pathway modulating wound healing in the future practice of space medicine.
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Affiliation(s)
- Yuan Yue
- Department of General SurgeryThe 306th Hospital of PLA‐Peking University Teaching HospitalBeijingChina
| | - Jia‐Qi Yang
- Department of General SurgeryThe 306th Hospital of PLA‐Peking University Teaching HospitalBeijingChina
| | - Sheng‐Yu Lu
- Department of General SurgeryThe 306th Hospital of PLA‐Peking University Teaching HospitalBeijingChina
| | - Jun Ge
- Department of General SurgeryThe 306th Hospital of PLA‐Peking University Teaching HospitalBeijingChina
| | - Hong‐Yun Nie
- Department of General SurgeryThe 306th Hospital of PLA‐Peking University Teaching HospitalBeijingChina
| | - Kai‐Ge Liu
- Department of General SurgeryStrategic Support Force Medical CenterBeijingChina
| | - Fei Liu
- Department of General SurgeryFuyang Tumor HospitalFuyangChina
| | - Hao Li
- Department of General SurgeryStrategic Support Force Medical CenterBeijingChina
| | - Hong‐Feng Yan
- Department of General SurgeryStrategic Support Force Medical CenterBeijingChina
| | - Tao Zhang
- Department of General SurgeryStrategic Support Force Medical CenterBeijingChina
| | - Pei‐Ming Sun
- Department of General SurgeryStrategic Support Force Medical CenterBeijingChina
| | - Hong‐Wei Sun
- Department of General SurgeryStrategic Support Force Medical CenterBeijingChina
| | - Jian‐Wu Yang
- Department of General SurgeryStrategic Support Force Medical CenterBeijingChina
| | - Jin‐Lian Zhou
- Department of PathologyStrategic Support Force Medical CenterBeijingChina
| | - Yan Cui
- Department of General SurgeryThe 306th Hospital of PLA‐Peking University Teaching HospitalBeijingChina
- Department of General SurgeryStrategic Support Force Medical CenterBeijingChina
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35
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Zorina A, Zorin V, Isaev A, Kudlay D, Vasileva M, Kopnin P. Dermal Fibroblasts as the Main Target for Skin Anti-Age Correction Using a Combination of Regenerative Medicine Methods. Curr Issues Mol Biol 2023; 45:3829-3847. [PMID: 37232716 DOI: 10.3390/cimb45050247] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 04/23/2023] [Accepted: 04/24/2023] [Indexed: 05/27/2023] Open
Abstract
This article includes the data from current studies regarding the pathophysiological mechanisms of skin aging and the regenerative processes occurring in the epidermis and dermis at the molecular and cellular level, mainly, the key role of dermal fibroblasts in skin regeneration. Analyzing these data, the authors proposed the concept of skin anti-age therapy that is based on the correction of age-related skin changes by stimulating regenerative processes at the molecular and cellular level. The main target of the skin anti-age therapy is dermal fibroblasts (DFs). A variant of the cosmetological anti-age program using the combination of laser and cellular methods of regenerative medicine is presented in the paper. The program includes three stages of implementation and defines the tasks and methods of each stage. Thus, laser technologies allow one to remodel the collagen matrix and create favorable conditions for DFs functions, whereas the cultivated autologous dermal fibroblasts replenish the pool of mature DFs decreasing with age and are responsible for the synthesis of components of the dermal extracellular matrix. Finally, the use of autological platelet-rich plasma (PRP) enables to maintenance of the achieved results by stimulating DF function. It has been shown that growth factors/cytokines contained in α-granules of platelets injected into the skin bind to the corresponding transmembrane receptors on the surface of DFs and stimulate their synthetic activity. Thus, the consecutive, step-by-step application of the described methods of regenerative medicine amplifies the effect on the molecular and cellular aging processes and thereby allows one to optimize and prolong the clinical results of skin rejuvenation.
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Affiliation(s)
- Alla Zorina
- The Human Stem Cells Institute, Moscow 119333, Russia
- SKINCELL LLC, Moscow 119333, Russia
| | - Vadim Zorin
- The Human Stem Cells Institute, Moscow 119333, Russia
- SKINCELL LLC, Moscow 119333, Russia
| | - Artur Isaev
- The Human Stem Cells Institute, Moscow 119333, Russia
| | - Dmitry Kudlay
- Department of Pharmacology, The I.M. Sechenov First Moscow State Medical University (The Sechenov University), Moscow 119991, Russia
| | - Maria Vasileva
- The N.N. Blokhin National Medical Research Oncology Center, The Ministry of Health of Russia, Moscow 115478, Russia
| | - Pavel Kopnin
- The N.N. Blokhin National Medical Research Oncology Center, The Ministry of Health of Russia, Moscow 115478, Russia
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36
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Chhabra Y, Weeraratna AT. Fibroblasts in cancer: Unity in heterogeneity. Cell 2023; 186:1580-1609. [PMID: 37059066 DOI: 10.1016/j.cell.2023.03.016] [Citation(s) in RCA: 61] [Impact Index Per Article: 61.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 03/13/2023] [Accepted: 03/15/2023] [Indexed: 04/16/2023]
Abstract
Tumor cells do not exist in isolation in vivo, and carcinogenesis depends on the surrounding tumor microenvironment (TME), composed of a myriad of cell types and biophysical and biochemical components. Fibroblasts are integral in maintaining tissue homeostasis. However, even before a tumor develops, pro-tumorigenic fibroblasts in close proximity can provide the fertile 'soil' to the cancer 'seed' and are known as cancer-associated fibroblasts (CAFs). In response to intrinsic and extrinsic stressors, CAFs reorganize the TME enabling metastasis, therapeutic resistance, dormancy and reactivation by secreting cellular and acellular factors. In this review, we summarize the recent discoveries on CAF-mediated cancer progression with a particular focus on fibroblast heterogeneity and plasticity.
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Affiliation(s)
- Yash Chhabra
- Department of Biochemistry and Molecular Biology, Bloomberg School of Public Health, Department of Oncology, Sidney Kimmel Cancer Center, School of Medicine, Johns Hopkins University, Baltimore, MD 21205, USA.
| | - Ashani T Weeraratna
- Department of Biochemistry and Molecular Biology, Bloomberg School of Public Health, Department of Oncology, Sidney Kimmel Cancer Center, School of Medicine, Johns Hopkins University, Baltimore, MD 21205, USA.
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37
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Cai X, Han M, Lou F, Sun Y, Yin Q, Sun L, Wang Z, Li X, Zhou H, Xu Z, Wang H, Deng S, Zheng X, Zhang T, Li Q, Zhou B, Wang H. Tenascin C + papillary fibroblasts facilitate neuro-immune interaction in a mouse model of psoriasis. Nat Commun 2023; 14:2004. [PMID: 37037861 PMCID: PMC10086024 DOI: 10.1038/s41467-023-37798-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Accepted: 03/29/2023] [Indexed: 04/12/2023] Open
Abstract
Dermal fibroblasts and cutaneous nerves are important players in skin diseases, while their reciprocal roles during skin inflammation have not been characterized. Here we identify an inflammation-induced subset of papillary fibroblasts that promotes aberrant neurite outgrowth and psoriasiform skin inflammation by secreting the extracellular matrix protein tenascin-C (TNC). Single-cell analysis of fibroblast lineages reveals a Tnc+ papillary fibroblast subset with pro-axonogenesis and neuro-regulation transcriptomic hallmarks. TNC overexpression in fibroblasts boosts neurite outgrowth in co-cultured neurons, while fibroblast-specific TNC ablation suppresses hyperinnervation and alleviates skin inflammation in male mice modeling psoriasis. Dermal γδT cells, the main producers of type 17 pathogenic cytokines, frequently contact nerve fibers in mouse psoriasiform lesions and are likely modulated by postsynaptic signals. Overall, our results highlight the role of an inflammation-responsive fibroblast subset in facilitating neuro-immune synapse formation and suggest potential avenues for future therapeutic research.
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Affiliation(s)
- Xiaojie Cai
- Precision Research Center for Refractory Diseases, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 201620, China
| | - Maoying Han
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, 200031, China
| | - Fangzhou Lou
- Precision Research Center for Refractory Diseases, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 201620, China
| | - Yang Sun
- Precision Research Center for Refractory Diseases, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 201620, China
| | - Qianqian Yin
- Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Libo Sun
- Precision Research Center for Refractory Diseases, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 201620, China
| | - Zhikai Wang
- Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Xiangxiao Li
- Precision Research Center for Refractory Diseases, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 201620, China
| | - Hong Zhou
- Precision Research Center for Refractory Diseases, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 201620, China
| | - Zhenyao Xu
- Precision Research Center for Refractory Diseases, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 201620, China
| | - Hong Wang
- Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Siyu Deng
- Precision Research Center for Refractory Diseases, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 201620, China
| | - Xichen Zheng
- Precision Research Center for Refractory Diseases, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 201620, China
| | - Taiyu Zhang
- Precision Research Center for Refractory Diseases, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 201620, China
| | - Qun Li
- The Department of Cardiovascular Medicine, State Key Laboratory of Medical Genomics, Ruijin Hospital, Shanghai Institute of Hypertension, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Bin Zhou
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, 200031, China.
| | - Honglin Wang
- Precision Research Center for Refractory Diseases, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 201620, China.
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38
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Wieder R. Fibroblasts as Turned Agents in Cancer Progression. Cancers (Basel) 2023; 15:cancers15072014. [PMID: 37046676 PMCID: PMC10093070 DOI: 10.3390/cancers15072014] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 03/19/2023] [Accepted: 03/23/2023] [Indexed: 03/30/2023] Open
Abstract
Differentiated epithelial cells reside in the homeostatic microenvironment of the native organ stroma. The stroma supports their normal function, their G0 differentiated state, and their expansion/contraction through the various stages of the life cycle and physiologic functions of the host. When malignant transformation begins, the microenvironment tries to suppress and eliminate the transformed cells, while cancer cells, in turn, try to resist these suppressive efforts. The tumor microenvironment encompasses a large variety of cell types recruited by the tumor to perform different functions, among which fibroblasts are the most abundant. The dynamics of the mutual relationship change as the sides undertake an epic battle for control of the other. In the process, the cancer “wounds” the microenvironment through a variety of mechanisms and attracts distant mesenchymal stem cells to change their function from one attempting to suppress the cancer, to one that supports its growth, survival, and metastasis. Analogous reciprocal interactions occur as well between disseminated cancer cells and the metastatic microenvironment, where the microenvironment attempts to eliminate cancer cells or suppress their proliferation. However, the altered microenvironmental cells acquire novel characteristics that support malignant progression. Investigations have attempted to use these traits as targets of novel therapeutic approaches.
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39
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Woodley JP, Lambert DW, Asencio IO. Reduced Fibroblast Activation on Electrospun Polycaprolactone Scaffolds. Bioengineering (Basel) 2023; 10:bioengineering10030348. [PMID: 36978739 PMCID: PMC10045272 DOI: 10.3390/bioengineering10030348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 03/03/2023] [Accepted: 03/08/2023] [Indexed: 03/14/2023] Open
Abstract
In vivo, quiescent fibroblasts reside in three-dimensional connective tissues and are activated in response to tissue injury before proliferating rapidly and becoming migratory and contractile myofibroblasts. When deregulated, chronic activation drives fibrotic disease. Fibroblasts cultured on stiff 2D surfaces display a partially activated phenotype, whilst many 3D environments limit fibroblast activation. Cell mechanotransduction, spreading, polarity, and integrin expression are controlled by material mechanical properties and micro-architecture. Between 3D culture systems, these features are highly variable, and the challenge of controlling individual properties without altering others has led to an inconsistent picture of fibroblast behaviour. Electrospinning offers greater control of mechanical properties and microarchitecture making it a valuable model to study fibroblast activation behaviour in vitro. Here, we present a comprehensive characterisation of the activation traits of human oral fibroblasts grown on a microfibrous scaffold composed of electrospun polycaprolactone. After over 7 days in the culture, we observed a reduction in proliferation rates compared to cells cultured in 2D, with low KI67 expression and no evidence of cellular senescence. A-SMA mRNA levels fell, and the expression of ECM protein-coding genes also decreased. Electrospun fibrous scaffolds, therefore, represent a tuneable platform to investigate the mechanisms of fibroblast activation and their roles in fibrotic disease.
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40
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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 Mediated by Chromatin De-repression. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.03.07.531478. [PMID: 36945417 PMCID: PMC10028926 DOI: 10.1101/2023.03.07.531478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Dermal Fibroblast Progenitors (DFPs) differentiate into distinct fibroblast lineages during skin development. However, the mechanisms that regulate lineage commitment of naive dermal progenitors to form niches around the hair follicle, dermis, and hypodermis, are unknown. In our study, we used multimodal single-cell approaches, epigenetic assays, and allografting techniques to define a DFP state and the mechanisms that govern its differentiation potential. Our results indicate that the overall chromatin profile of DFPs is repressed by H3K27me3 and has inaccessible chromatin at lineage specific genes. Surprisingly, the repressed chromatin profile of DFPs renders them unable to reform skin in allograft assays despite their multipotent potential. Distinct fibroblast lineages, such as the dermal papilla and adipocytes contained specific chromatin profiles that were de-repressed during late embryogenesis by the H3K27-me3 demethylase, Kdm6b/Jmjd3. Tissue-specific deletion of Kdm6b/Jmjd3 resulted in ablating the adipocyte compartment and inhibiting mature dermal papilla functions in single-cell-RNA-seq, ChIPseq, and allografting assays. Altogether our studies reveal a mechanistic multimodal understanding of how DFPs differentiate into distinct fibroblast lineages, and we provide a novel multiomic search-tool within skinregeneration.org.
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Affiliation(s)
- Quan M. Phan
- School of Molecular Biosciences, Washington State University, Pullman, WA
| | - Lucia Salz
- North Rhine-Westphalia Technical University of Aachen, Aachen, Germany
| | - Sam S. Kindl
- School of Molecular Biosciences, Washington State University, Pullman, WA
| | - Jayden S. Lopez
- School of Molecular Biosciences, Washington State University, Pullman, WA
| | - Sean M. Thompson
- School of Molecular Biosciences, Washington State University, Pullman, WA
| | - Jasson Makkar
- School of Molecular Biosciences, Washington State University, Pullman, WA
| | - Iwona M. Driskell
- School of Molecular Biosciences, Washington State University, Pullman, WA
| | - Ryan R. Driskell
- School of Molecular Biosciences, Washington State University, Pullman, WA
- Center for Reproductive Biology, Washington State University, Pullman, WA
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Spielman AF, Griffin MF, Parker J, Cotterell AC, Wan DC, Longaker MT. Beyond the Scar: A Basic Science Review of Wound Remodeling. Adv Wound Care (New Rochelle) 2023; 12:57-67. [PMID: 35658581 DOI: 10.1089/wound.2022.0049] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Significance: Increasing development of experimental animal models has allowed for the study of scar formation. However, many pathophysiological unknowns remain in the longest stage of healing, the remodeling stage, which may continue for a year or more. The wound healing process results in different types of scarring classified as normal or pathological depending on failures at each stage. Failures can also occur during wound remodeling, but the molecular mechanisms driving the wound remodeling process have yet to be investigated. Recent Advances: While the current understanding of wound repair is based on investigations of acute healing, these experimental models have informed knowledge of key components of remodeling. This review examines the components that contribute to collagen organization and the final scar, including cell types, their regulation, and signaling pathways. Dysregulation in any one of these components causes pathologic healing. Critical Issues and Future Directions: As wounds continue to remodel months to years after reepithelialization, new models to better understand long-term remodeling will be critical for improving healing outcomes. Further investigation of the contributions of fibroblasts and cell signaling pathways involved during remodeling as well as their potential failures may inform new approaches in promoting regenerative healing beyond reepithelialization.
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Affiliation(s)
- Amanda F Spielman
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Stanford University, Stanford, California, USA
| | - Michelle F Griffin
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Stanford University, Stanford, California, USA
| | - Jennifer Parker
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Stanford University, Stanford, California, USA.,Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, California, USA
| | - Asha C Cotterell
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Stanford University, Stanford, California, USA
| | - Derrick C Wan
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Stanford University, Stanford, California, USA
| | - Michael T Longaker
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Stanford University, Stanford, California, USA.,Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, California, USA
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Ung CY, Warwick A, Onoufriadis A, Barker JN, Parsons M, McGrath JA, Shaw TJ, Dand N. Comorbidities of Keloid and Hypertrophic Scars Among Participants in UK Biobank. JAMA Dermatol 2023; 159:172-181. [PMID: 36598763 PMCID: PMC9857738 DOI: 10.1001/jamadermatol.2022.5607] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 10/26/2022] [Indexed: 01/05/2023]
Abstract
Importance Keloids and hypertrophic scars (excessive scarring) are relatively understudied disfiguring chronic skin conditions with high treatment resistance. Objective To evaluate established comorbidities of excessive scarring in European individuals, with comparisons across ethnic groups, and to identify novel comorbidities via a phenome-wide association study (PheWAS). Design, Setting, and Participants This multicenter cross-sectional population-based cohort study used UK Biobank (UKB) data and fitted logistic regression models for testing associations between excessive scarring and a variety of outcomes, including previously studied comorbidities and 1518 systematically defined disease categories. Additional modeling was performed within subgroups of participants defined by self-reported ethnicity (as defined in UK Biobank). Of 502 701 UKB participants, analyses were restricted to 230078 individuals with linked primary care records. Exposures Keloid or hypertrophic scar diagnoses. Main Outcomes and Measures Previously studied disease associations (hypertension, uterine leiomyoma, vitamin D deficiency, atopic eczema) and phenotypes defined in the PheWAS Catalog. Results Of the 972 people with excessive scarring, there was a higher proportion of female participants compared with the 229 106 controls (65% vs 55%) and a lower proportion of White ethnicity (86% vs 95%); mean (SD) age of the total cohort was 64 (8) years. Associations were identified with hypertension and atopic eczema in models accounting for age, sex, and ethnicity, and the association with atopic eczema (odds ratio [OR], 1.68; 95% CI, 1.36-2.07; P < .001) remained statistically significant after accounting for additional potential confounders. Fully adjusted analyses within ethnic groups revealed associations with hypertension in Black participants (OR, 2.05; 95% CI, 1.13-3.72; P = .02) and with vitamin D deficiency in Asian participants (OR, 2.24; 95% CI, 1.26-3.97; P = .006). The association with uterine leiomyoma was borderline significant in Black women (OR, 1.93; 95% CI, 1.00-3.71; P = .05), whereas the association with atopic eczema was significant in White participants (OR, 1.68; 95% CI, 1.34-2.12; P < .001) and showed a similar trend in Asian (OR, 2.17; 95% CI, 1.01-4.67; P = .048) and Black participants (OR, 1.89; 95% CI, 0.83-4.28; P = .13). The PheWAS identified 110 significant associations across disease systems; of the nondermatological, musculoskeletal disease and pain symptoms were prominent. Conclusions and Relevance This cross-sectional study validated comorbidities of excessive scarring in UKB with comprehensive coverage of health outcomes. It also documented additional phenome-wide associations that will serve as a reference for future studies to investigate common underlying pathophysiologic mechanisms.
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Affiliation(s)
- Chuin Y. Ung
- St John’s Institute of Dermatology, School of Basic and Medical Biosciences, King’s College London, London, United Kingdom
- Centre for Inflammation Biology & Cancer Immunology, King’s College London, London, United Kingdom
| | - Alasdair Warwick
- University College London Institute of Cardiovascular Science, London, United Kingdom
| | - Alexandros Onoufriadis
- St John’s Institute of Dermatology, School of Basic and Medical Biosciences, King’s College London, London, United Kingdom
| | - Jonathan N. Barker
- St John’s Institute of Dermatology, School of Basic and Medical Biosciences, King’s College London, London, United Kingdom
| | - Maddy Parsons
- Randall Division of Cell and Molecular Biophysics, King’s College London, London, United Kingdom
| | - John A. McGrath
- St John’s Institute of Dermatology, School of Basic and Medical Biosciences, King’s College London, London, United Kingdom
| | - Tanya J. Shaw
- Centre for Inflammation Biology & Cancer Immunology, King’s College London, London, United Kingdom
| | - Nick Dand
- Department of Medical and Molecular Genetics, School of Basic & Medical Biosciences, Faculty of Life Sciences & Medicine, King’s College London, London, United Kingdom
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Parker JB, Griffin MF, Spielman AF, Wan DC, Longaker MT. Exploring the Overlooked Roles and Mechanisms of Fibroblasts in the Foreign Body Response. Adv Wound Care (New Rochelle) 2023; 12:85-96. [PMID: 35819293 PMCID: PMC10081717 DOI: 10.1089/wound.2022.0066] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 07/06/2022] [Indexed: 11/12/2022] Open
Abstract
Significance: Foreign body response (FBR), wherein a fibrotic capsule forms around an implanted structure, is a common surgical complication that often leads to pain, discomfort, and eventual revision surgeries. Although believed to have some mechanistic overlap with normal wound healing, much remains to be discovered about the specific mechanism by which this occurs. Recent Advances: Current understanding of FBR has focused on the roles of the immune system and the biomaterial, both major contributors to FBR. However, another key player, the fibroblast, is often overlooked. This review summarizes key contributors of FBR, focusing on the roles of fibroblasts. As much remains to be discovered about fibroblasts' specific roles in FBR, we draw on current knowledge of fibroblast subpopulations and functions during wound healing. We also provide an overview on candidate biomaterials and signaling pathways involved in FBR. Critical Issues and Future Directions: While the global implantable medical devices market is considerable and continues to appreciate in value, FBR remains one of the most common surgical implant complications. In parallel with the continued development of candidate biomaterials, further exploration of potential fibroblast subpopulations at a transcriptional level would provide key insights into further understanding the underlying mechanisms by which fibrous encapsulation occurs, and unveil novel directions for antifibrotic and regenerative therapies in the future.
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Affiliation(s)
- Jennifer B. Parker
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford, California, USA
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, California, USA
- Hagey Laboratory for Pediatric Regenerative Medicine, Department of Surgery, Stanford University School of Medicine, Stanford, California, USA
| | - Michelle F. Griffin
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford, California, USA
- Hagey Laboratory for Pediatric Regenerative Medicine, Department of Surgery, Stanford University School of Medicine, Stanford, California, USA
| | - Amanda F. Spielman
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford, California, USA
- Hagey Laboratory for Pediatric Regenerative Medicine, Department of Surgery, Stanford University School of Medicine, Stanford, California, USA
| | - Derrick C. Wan
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford, California, USA
- Hagey Laboratory for Pediatric Regenerative Medicine, Department of Surgery, Stanford University School of Medicine, Stanford, California, USA
| | - Michael T. Longaker
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford, California, USA
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, California, USA
- Hagey Laboratory for Pediatric Regenerative Medicine, Department of Surgery, Stanford University School of Medicine, Stanford, California, USA
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Tazelaar GHP, Hop PJ, Seelen M, van Vugt JJFA, van Rheenen W, Kool L, van Eijk KR, Gijzen M, Dooijes D, Moisse M, Calvo A, Moglia C, Brunetti M, Canosa A, Nordin A, Pardina JSM, Ravits J, Al-Chalabi A, Chio A, McLaughlin RL, Hardiman O, Van Damme P, de Carvalho M, Neuwirth C, Weber M, Andersen PM, van den Berg LH, Veldink JH, van Es MA. Whole genome sequencing analysis reveals post-zygotic mutation variability in monozygotic twins discordant for amyotrophic lateral sclerosis. Neurobiol Aging 2023; 122:76-87. [PMID: 36521271 DOI: 10.1016/j.neurobiolaging.2022.11.010] [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: 05/11/2022] [Revised: 10/23/2022] [Accepted: 11/08/2022] [Indexed: 11/18/2022]
Abstract
Amyotrophic lateral sclerosis is a heterogeneous, fatal neurodegenerative disease, characterized by motor neuron loss and in 50% of cases also by cognitive and/or behavioral changes. Mendelian forms of ALS comprise approximately 10-15% of cases. The majority is however considered sporadic, but also with a high contribution of genetic risk factors. To explore the contribution of somatic mutations and/or epigenetic changes to disease risk, we performed whole genome sequencing and methylation analyses using samples from multiple tissues on a cohort of 26 monozygotic twins discordant for ALS, followed by in-depth validation and replication experiments. The results of these analyses implicate several mechanisms in ALS pathophysiology, which include a role for de novo mutations, defects in DNA damage repair and accelerated aging.
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Affiliation(s)
- Gijs H P Tazelaar
- Department of Neurology and Neurosurgery, UMC Utrecht Brain Center, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Paul J Hop
- Department of Neurology and Neurosurgery, UMC Utrecht Brain Center, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Meinie Seelen
- Department of Neurology and Neurosurgery, UMC Utrecht Brain Center, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Joke J F A van Vugt
- Department of Neurology and Neurosurgery, UMC Utrecht Brain Center, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Wouter van Rheenen
- Department of Neurology and Neurosurgery, UMC Utrecht Brain Center, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Lindy Kool
- Department of Neurology and Neurosurgery, UMC Utrecht Brain Center, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Kristel R van Eijk
- Department of Neurology and Neurosurgery, UMC Utrecht Brain Center, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Marleen Gijzen
- Department of Genetics, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Dennis Dooijes
- Department of Genetics, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Matthieu Moisse
- Neurology Department University Hospitals Leuven, Department of Neurosciences and Leuven Brain Institute (LBI) KU Leuven-University of Leuven, Leuven, Belgium; VIB, Center for Brain & Disease Research, Leuven, Belgium
| | - Andrea Calvo
- ALS Centre, "Rita Levi Montalcini" Department of Neuroscience, University of Turin, Turin, Italy; Azienda Ospedaliero-Universitaria Città della Salute e della Scienza di Torino, SC Neurologia 1U, Turin, Italy; Neuroscience Institute of Turin (NIT), Turin, Italy
| | - Cristina Moglia
- ALS Centre, "Rita Levi Montalcini" Department of Neuroscience, University of Turin, Turin, Italy; Azienda Ospedaliero-Universitaria Città della Salute e della Scienza di Torino, SC Neurologia 1U, Turin, Italy; Neuroscience Institute of Turin (NIT), Turin, Italy
| | - Maura Brunetti
- ALS Centre, "Rita Levi Montalcini" Department of Neuroscience, University of Turin, Turin, Italy; Azienda Ospedaliero-Universitaria Città della Salute e della Scienza di Torino, SC Neurologia 1U, Turin, Italy; Neuroscience Institute of Turin (NIT), Turin, Italy
| | - Antonio Canosa
- ALS Centre, "Rita Levi Montalcini" Department of Neuroscience, University of Turin, Turin, Italy; Azienda Ospedaliero-Universitaria Città della Salute e della Scienza di Torino, SC Neurologia 1U, Turin, Italy; Neuroscience Institute of Turin (NIT), Turin, Italy
| | - Angelica Nordin
- Department of Clinical Science, Neurosciences, Umeå University Umeå, Sweden
| | | | - John Ravits
- Department of Neurosciences, University of California at San Diego, La Jolla, CA, USA
| | - Ammar Al-Chalabi
- Department of Basic and Clinical Neuroscience, Maurice Wohl Clinical Neuroscience Institute and United Kingdom Dementia Research Institute, King's College London, London, UK; Department of Neurology, King's College Hospital, London, UK
| | - Adriano Chio
- ALS Centre, "Rita Levi Montalcini" Department of Neuroscience, University of Turin, Turin, Italy; Azienda Ospedaliero-Universitaria Città della Salute e della Scienza di Torino, SC Neurologia 1U, Turin, Italy; Neuroscience Institute of Turin (NIT), Turin, Italy
| | - Russell L McLaughlin
- Population Genetics Laboratory, Smurfit Institute of Genetics, Trinity College Dublin, Republic of Ireland
| | - Orla Hardiman
- Academic Unit of Neurology, Trinity College Dublin, Trinity Biomedical Sciences Institute, Dublin, Republic of Ireland; Department of Neurology, Beaumont Hospital, Dublin, Republic of Ireland
| | - Philip Van Damme
- Neurology Department University Hospitals Leuven, Department of Neurosciences and Leuven Brain Institute (LBI) KU Leuven-University of Leuven, Leuven, Belgium; VIB, Center for Brain & Disease Research, Leuven, Belgium
| | - Mamede de Carvalho
- Department of Neurosciences, Hospital de Santa Maria-CHLN, Lisbon, Portugal; Institute of Physiology, Institute of Molecular Medicine, Faculty of Medicine, University of Lisbon, Lisbon, Portugal
| | - Christoph Neuwirth
- Neuromuscular Diseases Unit / ALS Clinic, Kantonsspital St.Gallen, St.Gallen, Switzerland
| | - Markus Weber
- Neuromuscular Diseases Unit / ALS Clinic, Kantonsspital St.Gallen, St.Gallen, Switzerland
| | - Peter M Andersen
- Department of Clinical Science, Neurosciences, Umeå University Umeå, Sweden
| | - Leonard H van den Berg
- Department of Neurology and Neurosurgery, UMC Utrecht Brain Center, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Jan H Veldink
- Department of Neurology and Neurosurgery, UMC Utrecht Brain Center, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Michael A van Es
- Department of Neurology and Neurosurgery, UMC Utrecht Brain Center, University Medical Center Utrecht, Utrecht, the Netherlands.
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Rai V, Moellmer R, Agrawal DK. Role of fibroblast plasticity and heterogeneity in modulating angiogenesis and healing in the diabetic foot ulcer. Mol Biol Rep 2023; 50:1913-1929. [PMID: 36528662 DOI: 10.1007/s11033-022-08107-4] [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: 08/15/2022] [Accepted: 11/09/2022] [Indexed: 12/23/2022]
Abstract
Chronic diabetic foot ulcers (DFUs) are an important clinical issue faced by clinicians despite the advanced treatment strategies consisting of wound debridement, off-loading, medication, wound dressings, and keeping the ulcer clean. Non-healing DFUs are associated with the risk of amputation, increased morbidity and mortality, and economic stress. Neo-angiogenesis and granulation tissue formation are necessary for physiological DFU healing and acute inflammation play a key role in healing. However, chronic inflammation in association with diabetic complications holds the ulcer in the inflammatory phase without progressing to the resolution phase contributing to non-healing. Fibroblasts acquiring myofibroblasts phenotype contribute to granulation tissue formation and angiogenesis. However, recent studies suggest the presence of five subtypes of fibroblast population and of changing density in non-healing DFUs. Further, the association of fibroblast plasticity and heterogeneity with wound healing suggests that the switch in fibroblast phenotype may affect wound healing. The fibroblast phenotype shift and altered function may be due to the presence of chronic inflammation or a diabetic wound microenvironment. This review focuses on the role of fibroblast plasticity and heterogeneity, the effect of hyperglycemia and inflammatory cytokines on fibroblasts, and the interaction of fibroblasts with other cells in diabetic wound microenvironment in the perspective of DFU healing. Next, we summarize secretory, angiogenic, and angiostatic phenotypes of fibroblast which have been discussed in other organ systems but not in relation to DFUs followed by the perspective on the role of their phenotypes in promoting angiogenesis in DFUs.
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Affiliation(s)
- Vikrant Rai
- Department of Translational Research, Western University of Health Sciences, 91766, Pomona, CA, USA.
| | - Rebecca Moellmer
- College of Podiatric Medicine, Western University of Health Sciences, 91766, Pomona, CA, USA
| | - Devendra K Agrawal
- Department of Translational Research, Western University of Health Sciences, 91766, Pomona, CA, USA
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46
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Pappalardo A, Alvarez Cespedes D, Fang S, Herschman AR, Jeon EY, Myers KM, Kysar JW, Abaci HE. Engineering edgeless human skin with enhanced biomechanical properties. SCIENCE ADVANCES 2023; 9:eade2514. [PMID: 36706190 PMCID: PMC9882972 DOI: 10.1126/sciadv.ade2514] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Accepted: 12/23/2022] [Indexed: 06/01/2023]
Abstract
Despite the advancements in skin bioengineering, 3D skin constructs are still produced as flat tissues with open edges, disregarding the fully enclosed geometry of human skin. Therefore, they do not effectively cover anatomically complex body sites, e.g., hands. Here, we challenge the prevailing paradigm by engineering the skin as a fully enclosed 3D tissue that can be shaped after a body part and seamlessly transplanted as a biological clothing. Our wearable edgeless skin constructs (WESCs) show enhanced dermal extracellular matrix (ECM) deposition and mechanical properties compared to conventional constructs. WESCs display region-specific cell/ECM alignment, as well as physiologic anisotropic mechanical properties. WESCs replace the skin in full-thickness wounds of challenging body sites (e.g., mouse hindlimbs) with minimal suturing and shorter surgery time. This study provides a compelling technology that may substantially improve wound care and suggests that the recapitulation of the tissue macroanatomy can lead to enhanced biological function.
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Affiliation(s)
- Alberto Pappalardo
- Department of Dermatology, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - David Alvarez Cespedes
- Department of Dermatology, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Shuyang Fang
- Department of Mechanical Engineering, School of Engineering and Applied Science, Columbia University, New York, NY 10027, USA
| | - Abigail R. Herschman
- Department of Mechanical Engineering, School of Engineering and Applied Science, Columbia University, New York, NY 10027, USA
| | - Eun Young Jeon
- Department of Dermatology, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Kristin M. Myers
- Department of Mechanical Engineering, School of Engineering and Applied Science, Columbia University, New York, NY 10027, USA
| | - Jeffrey W. Kysar
- Department of Mechanical Engineering, School of Engineering and Applied Science, Columbia University, New York, NY 10027, USA
- Department of Otolaryngology - Head & Neck Surgery, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Hasan Erbil Abaci
- Department of Dermatology, Columbia University Irving Medical Center, New York, NY 10032, USA
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Ran Y, Yan Z, Huang M, Zhou S, Wu F, Wang M, Yang S, Zhang P, Huang X, Jiang B, Liang P. Severe Burn Injury Significantly Alters the Gene Expression and m6A Methylation Tagging of mRNAs and lncRNAs in Human Skin. J Pers Med 2023; 13:jpm13010150. [PMID: 36675811 PMCID: PMC9864918 DOI: 10.3390/jpm13010150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 01/02/2023] [Accepted: 01/05/2023] [Indexed: 01/15/2023] Open
Abstract
N6-methyladenosine (m6A) modulates RNA metabolism and functions in cell differentiation, tissue development, and immune response. After acute burns, skin wounds are highly susceptible to infection and poor healing. However, our understanding of the effect of burn injuries on m6A methylation and their potential mechanism is still limited. Human m6A-mRNA&lncRNA Epitranscriptomic microarray was used to obtain comprehensive mRNA and lncRNA transcriptome m6A profiling and gene expression patterns after burn injuries in human skin tissue. Bioinformatic and functional analyses were conducted to find molecular functions. Microarray profiling showed that 65 mRNAs and 39 lncRNAs were significantly hypermethylated; 5492 mRNAs and 754 lncRNAs were significantly hypomethylated. Notably, 3989 hypomethylated mRNAs were down-expressed and inhibited many wound healing biological processes and pathways including in the protein catabolic process and supramolecular fiber organization pathway; 39 hypermethylated mRNAs were up-expressed and influenced the cell surface receptor signaling pathway and inflammatory response. Moreover, we validated that m6A regulators (METTL14, METTL16, ALKBH5, FMR1, and HNRNPC) were significantly downregulated after burn injury which may be responsible for the alteration of m6A modification and gene expression. In summary, we found that homeostasis in the skin was disrupted and m6A modification may be a potential mechanism affecting trauma infection and wound healing.
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Affiliation(s)
- Yanqin Ran
- Department of Burns and Plastic Surgery, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Zhuoxian Yan
- Department of Burns and Plastic Surgery, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Mitao Huang
- Department of Burns and Plastic Surgery, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Situo Zhou
- Department of Burns and Plastic Surgery, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Fangqin Wu
- Department of Burns and Plastic Surgery, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Mengna Wang
- Department of Burns and Plastic Surgery, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Sifan Yang
- Department of Burns and Plastic Surgery, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Pihong Zhang
- Department of Burns and Plastic Surgery, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Xiaoyuan Huang
- Department of Burns and Plastic Surgery, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Bimei Jiang
- Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha 410008, China
- Correspondence: (B.J.); (P.L.); Tel.: +86-0731-82355022 (B.J.); +86-13875858144 (P.L.)
| | - Pengfei Liang
- Department of Burns and Plastic Surgery, Xiangya Hospital, Central South University, Changsha 410008, China
- Correspondence: (B.J.); (P.L.); Tel.: +86-0731-82355022 (B.J.); +86-13875858144 (P.L.)
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Tam J. The case for considering volar skin in a "separate status" for wound healing. Front Med (Lausanne) 2023; 10:1156828. [PMID: 37035315 PMCID: PMC10076700 DOI: 10.3389/fmed.2023.1156828] [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: 02/01/2023] [Accepted: 03/07/2023] [Indexed: 04/11/2023] Open
Abstract
Foot ulcers, particularly in the diabetic setting, are a major medical and socioeconomic challenge. While the effects of diabetes and its various sequelae have been extensively studied, in the wound field it is commonly assumed that the wound healing process is essentially identical between different skin types, despite the many well-known specializations in palmoplantar skin, most of which are presumed to be evolutionary adaptations for weightbearing. This article will examine how these specializations could alter the wound healing trajectory and contribute to the pathology of foot ulcers.
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Affiliation(s)
- Joshua Tam
- Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, MA, United States
- Department of Dermatology, Harvard Medical School, Boston, MA, United States
- *Correspondence: Joshua Tam,
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49
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Wang K, Wen D, Xu X, Zhao R, Jiang F, Yuan S, Zhang Y, Gao Y, Li Q. Extracellular matrix stiffness-The central cue for skin fibrosis. Front Mol Biosci 2023; 10:1132353. [PMID: 36968277 PMCID: PMC10031116 DOI: 10.3389/fmolb.2023.1132353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Accepted: 02/20/2023] [Indexed: 03/29/2023] Open
Abstract
Skin fibrosis is a physiopathological process featuring the excessive deposition of extracellular matrix (ECM), which is the main architecture that provides structural support and constitutes the microenvironment for various cellular behaviors. Recently, increasing interest has been drawn to the relationship between the mechanical properties of the ECM and the initiation and modulation of skin fibrosis, with the engagement of a complex network of signaling pathways, the activation of mechanosensitive proteins, and changes in immunoregulation and metabolism. Simultaneous with the progression of skin fibrosis, the stiffness of ECM increases, which in turn perturbs mechanical and humoral homeostasis to drive cell fate toward an outcome that maintains and enhances the fibrosis process, thus forming a pro-fibrotic "positive feedback loop". In this review, we highlighted the central role of the ECM and its dynamic changes at both the molecular and cellular levels in skin fibrosis. We paid special attention to signaling pathways regulated by mechanical cues in ECM remodeling. We also systematically summarized antifibrotic interventions targeting the ECM, hopefully enlightening new strategies for fibrotic diseases.
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Affiliation(s)
- Kang Wang
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Burn and Plastic Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Dongsheng Wen
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xuewen Xu
- Department of Burn and Plastic Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Rui Zhao
- West China School of Medicine, Sichuan University, Chengdu, Sichuan, China
| | - Feipeng Jiang
- West China School of Medicine, Sichuan University, Chengdu, Sichuan, China
| | - Shengqin Yuan
- School of Public Administration, Sichuan University, Chengdu, Sichuan, China
| | - Yifan Zhang
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- *Correspondence: Yifan Zhang, ; Ya Gao, ; Qingfeng Li,
| | - Ya Gao
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- *Correspondence: Yifan Zhang, ; Ya Gao, ; Qingfeng Li,
| | - Qingfeng Li
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- *Correspondence: Yifan Zhang, ; Ya Gao, ; Qingfeng Li,
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Manetti M. Correspondence on 'Machine learning integration of scleroderma histology and gene expression identifies fibroblast polarisation as a hallmark of clinical severity and improvement'. Ann Rheum Dis 2023; 82:e21. [PMID: 33158878 DOI: 10.1136/annrheumdis-2020-219264] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Accepted: 10/11/2020] [Indexed: 02/03/2023]
Affiliation(s)
- Mirko Manetti
- Department of Experimental and Clinical Medicine, Section of Anatomy and Histology, University of Florence, Florence, Italy
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