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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; 38:921-938. [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] [MESH Headings] [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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2
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Schepps S, Xu J, Yang H, Mandel J, Mehta J, Tolotta J, Baker N, Tekmen V, Nikbakht N, Fortina P, Fuentes I, LaFleur B, Cho RJ, South AP. Skin in the game: a review of single-cell and spatial transcriptomics in dermatological research. Clin Chem Lab Med 2024; 62:1880-1891. [PMID: 38656304 DOI: 10.1515/cclm-2023-1245] [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: 11/03/2023] [Accepted: 02/29/2024] [Indexed: 04/26/2024]
Abstract
Single-cell RNA sequencing (scRNA-seq) and spatial transcriptomics (ST) are two emerging research technologies that uniquely characterize gene expression microenvironments on a cellular or subcellular level. The skin, a clinically accessible tissue composed of diverse, essential cell populations, serves as an ideal target for these high-resolution investigative approaches. Using these tools, researchers are assembling a compendium of data and discoveries in healthy skin as well as a range of dermatologic pathophysiologies, including atopic dermatitis, psoriasis, and cutaneous malignancies. The ongoing advancement of single-cell approaches, coupled with anticipated decreases in cost with increased adoption, will reshape dermatologic research, profoundly influencing disease characterization, prognosis, and ultimately clinical practice.
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Affiliation(s)
- Samuel Schepps
- Department of Dermatology and Cutaneous Biology, 6559 Thomas Jefferson University , Philadelphia, PA, USA
| | - Jonathan Xu
- Department of Dermatology and Cutaneous Biology, 6559 Thomas Jefferson University , Philadelphia, PA, USA
| | - Henry Yang
- Department of Dermatology and Cutaneous Biology, 6559 Thomas Jefferson University , Philadelphia, PA, USA
| | - Jenna Mandel
- Department of Dermatology and Cutaneous Biology, 6559 Thomas Jefferson University , Philadelphia, PA, USA
| | - Jaanvi Mehta
- Department of Dermatology and Cutaneous Biology, 6559 Thomas Jefferson University , Philadelphia, PA, USA
| | - Julianna Tolotta
- Department of Dermatology and Cutaneous Biology, 6559 Thomas Jefferson University , Philadelphia, PA, USA
| | - Nicole Baker
- Department of Dermatology and Cutaneous Biology, 6559 Thomas Jefferson University , Philadelphia, PA, USA
| | - Volkan Tekmen
- Department of Dermatology and Cutaneous Biology, 6559 Thomas Jefferson University , Philadelphia, PA, USA
| | - Neda Nikbakht
- Department of Dermatology and Cutaneous Biology, 6559 Thomas Jefferson University , Philadelphia, PA, USA
- Department of Pharmacology, Physiology and Cancer Biology, 6559 Thomas Jefferson University , Philadelphia, PA, USA
| | - Paolo Fortina
- Department of Pharmacology, Physiology and Cancer Biology, 6559 Thomas Jefferson University , Philadelphia, PA, USA
- International Federation of Clinical Chemistry Working Group on Single Cell and Spatial Transcriptomics, Milan, Italy
| | - Ignacia Fuentes
- International Federation of Clinical Chemistry Working Group on Single Cell and Spatial Transcriptomics, Milan, Italy
- Departamento de Biología Celular y Molecular, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Directora de Investigación Fundación DEBRA Chile, Santiago, Chile
| | - Bonnie LaFleur
- International Federation of Clinical Chemistry Working Group on Single Cell and Spatial Transcriptomics, Milan, Italy
- R. Ken Coit College of Pharmacy, University of Arizona, University of Arizona Cancer Center, Tucson, AZ, USA
| | - Raymond J Cho
- International Federation of Clinical Chemistry Working Group on Single Cell and Spatial Transcriptomics, Milan, Italy
- Department of Dermatology, University of San Francisco, San Francisco, CA, USA
| | - Andrew P South
- Department of Pharmacology, Physiology and Cancer Biology, 6559 Thomas Jefferson University , Philadelphia, PA, USA
- International Federation of Clinical Chemistry Working Group on Single Cell and Spatial Transcriptomics, Milan, Italy
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Rahnama M, Ghasemzadeh N, Ebrahimi Y, Golchin A. A comprehensive evaluation of dermal fibroblast therapy in clinical trials for treating skin disorders and cosmetic applications: a scoping review. Stem Cell Res Ther 2024; 15:318. [PMID: 39304949 DOI: 10.1186/s13287-024-03892-0] [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: 05/01/2024] [Accepted: 08/25/2024] [Indexed: 09/22/2024] Open
Abstract
BACKGROUND Fibroblast cells have the ability to improve skin conditions through regenerative medicine and cell-based therapies. The purpose of this scoping review is to assess the contribution of fibroblast cells to skin homeostasis and extracellular matrix deposition in clinical trials involving skin disorders and cosmetic applications. METHODS Using targeted search terms, published publications from January 2000 to August 2023 that addressed fibroblast uses in clinical trials of skin conditions were obtained from bibliographic databases like PubMed, Scopus, and Web of Science (WoS). Precise inclusion and exclusion criteria were used during the screening process. The potential benefits of induction treatment with fibroblasts lead to the choosing of clinical trials for this kind of treatment. RESULTS Out of the 820 published ppapers initially identified, only 35 studies fulfilled our meticulous eligibility criteria after careful screening. To ensure clarity, we methodically eliminated any duplicate or irrelevant published papers, thereby offering a transparent account of our selection process. CONCLUSION This study highlights the advantages of fibroblast therapy in treating skin conditions such as diabetic foot, venous leg ulcers, and cosmetic reasons. Fibroblasts possess remarkable regenerating capabilities, making dermal fibroblast therapy crucial in cell-based and skin regenerative treatments. Nevertheless, additional research is required for more disorders and cosmetic applications.
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Affiliation(s)
- Maryam Rahnama
- Student Research Committee, Urmia University of Medical Sciences, Urmia, Iran
- Department of Applied Cell Sciences, School of Medicine, Urmia University of Medical Sciences, Urmia, Iran
| | - Navid Ghasemzadeh
- Student Research Committee, Urmia University of Medical Sciences, Urmia, Iran
- Department of Clinical Biochemistry, School of Medicine, Urmia University of Medical Sciences, Urmia, Iran
| | - Yaser Ebrahimi
- Student Research Committee, Urmia University of Medical Sciences, Urmia, Iran
- Department of Clinical Biochemistry, School of Medicine, Urmia University of Medical Sciences, Urmia, Iran
| | - Ali Golchin
- Student Research Committee, Urmia University of Medical Sciences, Urmia, Iran.
- Department of Applied Cell Sciences, School of Medicine, Urmia University of Medical Sciences, Urmia, Iran.
- Solid Tumor Research Center, Cellular and Molecular Medicine Research Institute, Urmia University of Medical Sciences, Urmia, Iran.
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4
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Lee SS, Sweren E, Dare E, Derr P, Derr K, Wang CC, Hardesty B, Willis AA, Chen J, Vuillier JK, Du J, Wool J, Ruci A, Wang VY, Lee C, Iyengar S, Asami S, Daskam M, Lee C, Lee JC, Cho D, Kim J, Martinez-Peña EG, Lee SM, He X, Wakeman M, Sicilia I, Dobbs DT, van Ee A, Li A, Xue Y, Williams KL, Kirby CS, Kim D, Kim S, Xu L, Wang R, Ferrer M, Chen Y, Kang JU, Kalhor R, Kang S, Garza LA. The use of ectopic volar fibroblasts to modify skin identity. Science 2024; 385:eadi1650. [PMID: 39236183 PMCID: PMC11457755 DOI: 10.1126/science.adi1650] [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: 04/12/2023] [Revised: 03/20/2024] [Accepted: 07/11/2024] [Indexed: 09/07/2024]
Abstract
Skin identity is controlled by intrinsic features of the epidermis and dermis and their interactions. Modifying skin identity has clinical potential, such as the conversion of residual limb and stump (nonvolar) skin of amputees to pressure-responsive palmoplantar (volar) skin to enhance prosthesis use and minimize skin breakdown. Greater keratin 9 (KRT9) expression, higher epidermal thickness, keratinocyte cytoplasmic size, collagen length, and elastin are markers of volar skin and likely contribute to volar skin resiliency. Given fibroblasts' capacity to modify keratinocyte differentiation, we hypothesized that volar fibroblasts influence these features. Bioprinted skin constructs confirmed the capacity of volar fibroblasts to induce volar keratinocyte features. A clinical trial of healthy volunteers demonstrated that injecting volar fibroblasts into nonvolar skin increased volar features that lasted up to 5 months, highlighting a potential cellular therapy.
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Affiliation(s)
- Sam S. Lee
- Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Evan Sweren
- Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Erika Dare
- Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Paige Derr
- Division of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, MD 20850, USA
| | - Kristy Derr
- Division of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, MD 20850, USA
| | - Chen Chia Wang
- Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Brooke Hardesty
- Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Aiden A. Willis
- Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Junjie Chen
- Department of Mechanical Engineering, Johns Hopkins University, MD 21210, USA
| | - Jonathan K. Vuillier
- Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Joseph Du
- Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Julia Wool
- Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Amanda Ruci
- Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Vicky Y. Wang
- Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Chaewon Lee
- Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Sampada Iyengar
- Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Soichiro Asami
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Maria Daskam
- Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Claudia Lee
- Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Jeremy C. Lee
- Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Darren Cho
- Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Joshua Kim
- Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | | | - So Min Lee
- Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Xu He
- Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Michael Wakeman
- Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Iralde Sicilia
- Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Dalhart T. Dobbs
- Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Amy van Ee
- Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Ang Li
- Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Yingchao Xue
- Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Kaitlin L. Williams
- Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Charles S. Kirby
- Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Dongwon Kim
- Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Sooah Kim
- Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Lillian Xu
- Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Ruizhi Wang
- Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Marc Ferrer
- Division of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, MD 20850, USA
| | - Yun Chen
- Department of Mechanical Engineering, Johns Hopkins University, MD 21210, USA
| | - Jin U. Kang
- Department of Electrical and Computer Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Reza Kalhor
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Sewon Kang
- Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Luis A. Garza
- Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
- Department of Cell Biology, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
- Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
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5
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Xu Y, Wang S, Feng Q, Xia J, Li Y, Li HD, Wang J. scCAD: Cluster decomposition-based anomaly detection for rare cell identification in single-cell expression data. Nat Commun 2024; 15:7561. [PMID: 39215003 PMCID: PMC11364754 DOI: 10.1038/s41467-024-51891-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Accepted: 08/15/2024] [Indexed: 09/04/2024] Open
Abstract
Single-cell RNA sequencing (scRNA-seq) technologies have become essential tools for characterizing cellular landscapes within complex tissues. Large-scale single-cell transcriptomics holds great potential for identifying rare cell types critical to the pathogenesis of diseases and biological processes. Existing methods for identifying rare cell types often rely on one-time clustering using partial or global gene expression. However, these rare cell types may be overlooked during the clustering phase, posing challenges for their accurate identification. In this paper, we propose a Cluster decomposition-based Anomaly Detection method (scCAD), which iteratively decomposes clusters based on the most differential signals in each cluster to effectively separate rare cell types and achieve accurate identification. We benchmark scCAD on 25 real-world scRNA-seq datasets, demonstrating its superior performance compared to 10 state-of-the-art methods. In-depth case studies across diverse datasets, including mouse airway, brain, intestine, human pancreas, immunology data, and clear cell renal cell carcinoma, showcase scCAD's efficiency in identifying rare cell types in complex biological scenarios. Furthermore, scCAD can correct the annotation of rare cell types and identify immune cell subtypes associated with disease, thereby offering valuable insights into disease progression.
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Affiliation(s)
- Yunpei Xu
- School of Computer Science and Engineering, Central South University, Changsha, China
- Xiangjiang Laboratory, Changsha, China
- Hunan Provincial Key Lab on Bioinformatics, Central South University, Changsha, China
| | - Shaokai Wang
- David R. Cheriton School of Computer Science, University of Waterloo, Waterloo, ON, Canada
| | - Qilong Feng
- School of Computer Science and Engineering, Central South University, Changsha, China
- Xiangjiang Laboratory, Changsha, China
- Hunan Provincial Key Lab on Bioinformatics, Central South University, Changsha, China
| | - Jiazhi Xia
- School of Computer Science and Engineering, Central South University, Changsha, China
- Hunan Provincial Key Lab on Bioinformatics, Central South University, Changsha, China
| | - Yaohang Li
- Department of Computer Science, Old Dominion University, Norfolk, VA, USA
| | - Hong-Dong Li
- School of Computer Science and Engineering, Central South University, Changsha, China.
- Xiangjiang Laboratory, Changsha, China.
- Hunan Provincial Key Lab on Bioinformatics, Central South University, Changsha, China.
| | - Jianxin Wang
- School of Computer Science and Engineering, Central South University, Changsha, China.
- Xiangjiang Laboratory, Changsha, China.
- Hunan Provincial Key Lab on Bioinformatics, Central South University, Changsha, China.
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6
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Zhu B, Liang L, Hui L, Lu Y. Exploring the role of dermal sheath cells in wound healing and fibrosis. Wound Repair Regen 2024. [PMID: 39129718 DOI: 10.1111/wrr.13206] [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: 02/22/2024] [Revised: 07/19/2024] [Accepted: 07/23/2024] [Indexed: 08/13/2024]
Abstract
Wound healing is a complex, dynamic process involving the coordinated interaction of diverse cell types, growth factors, cytokines, and extracellular matrix components. Despite emerging evidence highlighting their importance, dermal sheath cells remain a largely overlooked aspect of wound healing research. This review explores the multifunctional roles of dermal sheath cells in various phases of wound healing, including modulating inflammation, aiding in proliferation, and contributing to extracellular matrix remodelling. Special attention is devoted to the paracrine effects of dermal sheath cells and their role in fibrosis, highlighting their potential in improving healing outcomes, especially in differentiating between hairy and non-hairy skin sites. By drawing connections between dermal sheath cells activity and wound healing outcomes, this work proposes new insights into the mechanisms of tissue regeneration and repair, marking a step forward in our understanding of wound healing processes.
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Affiliation(s)
- Bing Zhu
- Translational Medicine Engineering Research Center of Inner Mongolia Autonomous Region, affiliated with Baotou Central Hospital, Baotou, China
| | - Lu Liang
- Translational Medicine Engineering Research Center of Inner Mongolia Autonomous Region, affiliated with Baotou Central Hospital, Baotou, China
| | - Lihua Hui
- Burn Research Institute of Inner Mongolia Autonomous Region, affiliated with Inner Mongolia Baogang Hospital, Baotou, China
| | - Yaojun Lu
- Translational Medicine Engineering Research Center of Inner Mongolia Autonomous Region, affiliated with Baotou Central Hospital, Baotou, China
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7
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Southard KM, Ardy RC, Tang A, O’Sullivan DD, Metzner E, Guruvayurappan K, Norman TM. Comprehensive transcription factor perturbations recapitulate fibroblast transcriptional states. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.07.31.606073. [PMID: 39131349 PMCID: PMC11312553 DOI: 10.1101/2024.07.31.606073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 08/13/2024]
Abstract
Cell atlas projects have nominated recurrent transcriptional states as drivers of biological processes and disease, but their origins, regulation, and properties remain unclear. To enable complementary functional studies, we developed a scalable approach for recapitulating cell states in vitro using CRISPR activation (CRISPRa) Perturb-seq. Aided by a novel multiplexing method, we activated 1,836 transcription factors in two cell types. Measuring 21,958 perturbations showed that CRISPRa activated targets within physiological ranges, that epigenetic features predicted activatable genes, and that the protospacer seed region drove an off-target effect. Perturbations recapitulated in vivo fibroblast states, including universal and inflammatory states, and identified KLF4 and KLF5 as key regulators of the universal state. Inducing the universal state suppressed disease-associated states, highlighting its therapeutic potential. Our findings cement CRISPRa as a tool for perturbing differentiated cells and indicate that in vivo states can be elicited via perturbation, enabling studies of clinically relevant states ex vivo.
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Affiliation(s)
- Kaden M. Southard
- Computational and Systems Biology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Rico C. Ardy
- Computational and Systems Biology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Anran Tang
- Computational and Systems Biology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Deirdre D. O’Sullivan
- Computational and Systems Biology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Tri-Institutional Training Program in Computational Biology and Medicine, New York, NY, USA
| | - Eli Metzner
- Computational and Systems Biology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Tri-Institutional Training Program in Computational Biology and Medicine, New York, NY, USA
| | - Karthik Guruvayurappan
- Computational and Systems Biology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Tri-Institutional Training Program in Computational Biology and Medicine, New York, NY, USA
| | - Thomas M. Norman
- Computational and Systems Biology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
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Younesi FS, Miller AE, Barker TH, Rossi FMV, Hinz B. Fibroblast and myofibroblast activation in normal tissue repair and fibrosis. Nat Rev Mol Cell Biol 2024; 25:617-638. [PMID: 38589640 DOI: 10.1038/s41580-024-00716-0] [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: 02/21/2024] [Indexed: 04/10/2024]
Abstract
The term 'fibroblast' often serves as a catch-all for a diverse array of mesenchymal cells, including perivascular cells, stromal progenitor cells and bona fide fibroblasts. Although phenotypically similar, these subpopulations are functionally distinct, maintaining tissue integrity and serving as local progenitor reservoirs. In response to tissue injury, these cells undergo a dynamic fibroblast-myofibroblast transition, marked by extracellular matrix secretion and contraction of actomyosin-based stress fibres. Importantly, whereas transient activation into myofibroblasts aids in tissue repair, persistent activation triggers pathological fibrosis. In this Review, we discuss the roles of mechanical cues, such as tissue stiffness and strain, alongside cell signalling pathways and extracellular matrix ligands in modulating myofibroblast activation and survival. We also highlight the role of epigenetic modifications and myofibroblast memory in physiological and pathological processes. Finally, we discuss potential strategies for therapeutically interfering with these factors and the associated signal transduction pathways to improve the outcome of dysregulated healing.
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Affiliation(s)
- Fereshteh Sadat Younesi
- Keenan Research Institute for Biomedical Science of the St. Michael's Hospital, Toronto, Ontario, Canada
- Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada
| | - Andrew E Miller
- Department of Biomedical Engineering, School of Engineering and Applied Science, University of Virginia, Charlottesville, VA, USA
| | - Thomas H Barker
- Department of Biomedical Engineering, School of Engineering and Applied Science, University of Virginia, Charlottesville, VA, USA
| | - Fabio M V Rossi
- School of Biomedical Engineering and Department of Medical Genetics, University of British Columbia, Vancouver, British Columbia, Canada
| | - Boris Hinz
- Keenan Research Institute for Biomedical Science of the St. Michael's Hospital, Toronto, Ontario, Canada.
- Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada.
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9
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Łuszczyński K, Soszyńska M, Komorowski M, Lewandowska P, Zdanowski R, Sobiepanek A, Brytan M, Malejczyk J, Lutyńska A, Ścieżyńska A. Markers of Dermal Fibroblast Subpopulations for Viable Cell Isolation via Cell Sorting: A Comprehensive Review. Cells 2024; 13:1206. [PMID: 39056788 PMCID: PMC11274970 DOI: 10.3390/cells13141206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2024] [Revised: 07/04/2024] [Accepted: 07/10/2024] [Indexed: 07/28/2024] Open
Abstract
Fibroblasts are among the most abundant cell types in the human body, playing crucial roles in numerous physiological processes, including the structural maintenance of the dermis, production of extracellular matrix components, and mediation of inflammatory responses. Despite their importance, fibroblasts remain one of the least characterized cell populations. The advent of single-cell analysis techniques, particularly single-cell RNA sequencing (scRNA-seq) and fluorescence-activated cell sorting (FACS), has enabled detailed investigations into fibroblast biology. In this study, we present an extensive analysis of fibroblast surface markers suitable for cell sorting and subsequent functional studies. We reviewed over three thousand research articles describing fibroblast populations and their markers, characterizing and comparing subtypes based on their surface markers, as well as their intra- and extracellular proteins. Our detailed analysis identified a variety of distinct fibroblast subpopulations, each with unique markers, characteristics dependent on their location, and the physiological or pathophysiological environment. These findings underscore the diversity of fibroblasts as a cellular population and could lead to the development of novel diagnostic and therapeutic tools.
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Affiliation(s)
- Krzysztof Łuszczyński
- Laboratory of Molecular Oncology and Innovative Therapies, Military Institute of Medicine National Research Institute, 128 Szaserów Street, 04-141 Warsaw, Poland; (K.Ł.); (R.Z.); (A.L.)
| | - Marta Soszyńska
- Department of Histology and Embryology, Medical University of Warsaw, 02-004 Warsaw, Poland; (M.S.); (M.K.); (P.L.); (J.M.)
| | - Michał Komorowski
- Department of Histology and Embryology, Medical University of Warsaw, 02-004 Warsaw, Poland; (M.S.); (M.K.); (P.L.); (J.M.)
| | - Paulina Lewandowska
- Department of Histology and Embryology, Medical University of Warsaw, 02-004 Warsaw, Poland; (M.S.); (M.K.); (P.L.); (J.M.)
| | - Robert Zdanowski
- Laboratory of Molecular Oncology and Innovative Therapies, Military Institute of Medicine National Research Institute, 128 Szaserów Street, 04-141 Warsaw, Poland; (K.Ł.); (R.Z.); (A.L.)
| | - Anna Sobiepanek
- Chair of Drug and Cosmetics Biotechnology, Faculty of Chemistry, Warsaw University of Technology, 00-664 Warsaw, Poland;
| | - Marek Brytan
- Department of Pharmacology and Toxicology, Military Institute of Hygiene and Epidemiology, 01-163 Warsaw, Poland;
| | - Jacek Malejczyk
- Department of Histology and Embryology, Medical University of Warsaw, 02-004 Warsaw, Poland; (M.S.); (M.K.); (P.L.); (J.M.)
| | - Anna Lutyńska
- Laboratory of Molecular Oncology and Innovative Therapies, Military Institute of Medicine National Research Institute, 128 Szaserów Street, 04-141 Warsaw, Poland; (K.Ł.); (R.Z.); (A.L.)
| | - Aneta Ścieżyńska
- Laboratory of Molecular Oncology and Innovative Therapies, Military Institute of Medicine National Research Institute, 128 Szaserów Street, 04-141 Warsaw, Poland; (K.Ł.); (R.Z.); (A.L.)
- Department of Histology and Embryology, Medical University of Warsaw, 02-004 Warsaw, Poland; (M.S.); (M.K.); (P.L.); (J.M.)
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10
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Direder M, Laggner M, Copic D, Klas K, Bormann D, Schweiger T, Hoetzenecker K, Aigner C, Ankersmit HJ, Mildner M. Transcriptional profiling sheds light on the fibrotic aspects of idiopathic subglottic tracheal stenosis. Front Cell Dev Biol 2024; 12:1380902. [PMID: 39071799 PMCID: PMC11272577 DOI: 10.3389/fcell.2024.1380902] [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: 02/02/2024] [Accepted: 06/25/2024] [Indexed: 07/30/2024] Open
Abstract
Idiopathic subglottic stenosis (ISGS) is a rare fibrotic disease of the upper trachea with an unknown pathomechanism. It typically affects adult Caucasian female patients, leading to severe airway constrictions caused by progressive scar formation and inflammation with clinical symptoms of dyspnoea, stridor and potential changes to the voice. Endoscopic treatment frequently leads to recurrence, whereas surgical resection and reconstruction provides excellent long-term functional outcome. This study aimed to identify so far unrecognized pathologic aspects of ISGS using single cell RNA sequencing. Our scRNAseq analysis uncovered the cellular composition of the subglottic scar tissue, including the presence of a pathologic, profibrotic fibroblast subtype and the presence of Schwann cells in a profibrotic state. In addition, a pathology-associated increase of plasma cells was identified. Using extended bioinformatics analyses, we decoded pathology-associated changes of factors of the extracellular matrix. Our data identified ongoing fibrotic processes in ISGS and provide novel insights on the contribution of fibroblasts, Schwann cells and plasma cells to the pathogenesis of ISGS. This knowledge could impact the development of novel approaches for diagnosis and therapy of ISGS.
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Affiliation(s)
- Martin Direder
- Laboratory for Cardiac and Thoracic Diagnosis, Regeneration and Applied Immunology, Department of Thoracic Surgery, Medical University of Vienna, Vienna, Austria
- Aposcience AG, Vienna, Austria
- Department of Orthopedics and Trauma-Surgery, Medical University of Vienna, Vienna, Austria
| | - Maria Laggner
- Laboratory for Cardiac and Thoracic Diagnosis, Regeneration and Applied Immunology, Department of Thoracic Surgery, Medical University of Vienna, Vienna, Austria
- Aposcience AG, Vienna, Austria
| | - Dragan Copic
- Laboratory for Cardiac and Thoracic Diagnosis, Regeneration and Applied Immunology, Department of Thoracic Surgery, Medical University of Vienna, Vienna, Austria
- Aposcience AG, Vienna, Austria
- Department of Internal Medicine III, Division of Nephrology and Dialysis, Medical University of Vienna, Vienna, Austria
| | - Katharina Klas
- Laboratory for Cardiac and Thoracic Diagnosis, Regeneration and Applied Immunology, Department of Thoracic Surgery, Medical University of Vienna, Vienna, Austria
- Aposcience AG, Vienna, Austria
| | - Daniel Bormann
- Laboratory for Cardiac and Thoracic Diagnosis, Regeneration and Applied Immunology, Department of Thoracic Surgery, Medical University of Vienna, Vienna, Austria
- Aposcience AG, Vienna, Austria
| | - Thomas Schweiger
- Department of Thoracic Surgery, Medical University of Vienna, Vienna, Austria
| | - Konrad Hoetzenecker
- Department of Thoracic Surgery, Medical University of Vienna, Vienna, Austria
| | - Clemens Aigner
- Department of Thoracic Surgery, Medical University of Vienna, Vienna, Austria
| | - Hendrik Jan Ankersmit
- Laboratory for Cardiac and Thoracic Diagnosis, Regeneration and Applied Immunology, Department of Thoracic Surgery, Medical University of Vienna, Vienna, Austria
- Aposcience AG, Vienna, Austria
- Department of Thoracic Surgery, Medical University of Vienna, Vienna, Austria
| | - Michael Mildner
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
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11
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Huang D, Jiao X, Huang S, Liu J, Si H, Qi D, Pei X, Lu D, Wang Y, Li Z. Analysis of the heterogeneity and complexity of murine extraorbital lacrimal gland via single-cell RNA sequencing. Ocul Surf 2024; 34:60-95. [PMID: 38945476 DOI: 10.1016/j.jtos.2024.06.005] [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: 08/26/2022] [Revised: 06/22/2024] [Accepted: 06/26/2024] [Indexed: 07/02/2024]
Abstract
PURPOSE The lacrimal gland is essential for maintaining ocular surface health and avoiding external damage by secreting an aqueous layer of the tear film. However, a healthy lacrimal gland's inventory of cell types and heterogeneity remains understudied. METHODS Here, 10X Genome-based single-cell RNA sequencing was used to generate an unbiased classification of cellular diversity in the extraorbital lacrimal gland (ELG) of C57BL/6J mice. From 43,850 high-quality cells, we produced an atlas of cell heterogeneity and defined cell types using classic marker genes. The possible functions of these cells were analyzed through bioinformatics analysis. Additionally, the CellChat was employed for a preliminary analysis of the cell-cell communication network in the ELG. RESULTS Over 37 subclasses of cells were identified, including seven types of glandular epithelial cells, three types of fibroblasts, ten types of myeloid-derived immune cells, at least eleven types of lymphoid-derived immune cells, and five types of vascular-associated cell subsets. The cell-cell communication network analysis revealed that fibroblasts and immune cells play a pivotal role in the dense intercellular communication network within the mouse ELG. CONCLUSIONS This study provides a comprehensive transcriptome atlas and related database of the mouse ELG.
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Affiliation(s)
- Duliurui Huang
- Department of Ophthalmology, Zhengzhou University People's Hospital, Henan Provincial People's Hospital, Zhengzhou, Henan, China
| | - Xinwei Jiao
- Henan Eye Institute, Henan Eye Hospital and Henan Key Laboratory of Ophthalmology and Visual Science, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, Zhengzhou, 450000, China
| | - Shenzhen Huang
- Henan Eye Institute, Henan Eye Hospital and Henan Key Laboratory of Ophthalmology and Visual Science, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, Zhengzhou, 450000, China
| | - Jiangman Liu
- Department of Ophthalmology, Zhengzhou University People's Hospital, Henan Provincial People's Hospital, Zhengzhou, Henan, China
| | - Hongli Si
- Department of Ophthalmology, Zhengzhou University People's Hospital, Henan Provincial People's Hospital, Zhengzhou, Henan, China
| | - Di Qi
- Henan Eye Institute, Henan Eye Hospital and Henan Key Laboratory of Ophthalmology and Visual Science, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, Zhengzhou, 450000, China
| | - Xiaoting Pei
- Henan Eye Institute, Henan Eye Hospital and Henan Key Laboratory of Ophthalmology and Visual Science, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, Zhengzhou, 450000, China
| | - Dingli Lu
- Henan Eye Institute, Henan Eye Hospital and Henan Key Laboratory of Ophthalmology and Visual Science, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, Zhengzhou, 450000, China
| | - Yimian Wang
- Division of Medicine, Faculty of Medical Sciences, University College London, Gower Street, London, WC1E 6BT, UK
| | - Zhijie Li
- Department of Ophthalmology, Zhengzhou University People's Hospital, Henan Provincial People's Hospital, Zhengzhou, Henan, China; Henan Eye Institute, Henan Eye Hospital and Henan Key Laboratory of Ophthalmology and Visual Science, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, Zhengzhou, 450000, China.
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12
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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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13
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Wang H, Qi LL, Shema C, Jiang KY, Ren P, Wang H, Wang L. Advances in the role and mechanism of fibroblasts in fracture healing. Front Endocrinol (Lausanne) 2024; 15:1350958. [PMID: 38469138 PMCID: PMC10925620 DOI: 10.3389/fendo.2024.1350958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Accepted: 02/01/2024] [Indexed: 03/13/2024] Open
Abstract
With the development of social population ageing, bone fracture has become a global public health problem due to its high morbidity, disability and mortality. Fracture healing is a complex phenomenon involving the coordinated participation of immigration, differentiation and proliferation of inflammatory cells, angioblasts, fibroblasts, chondroblasts and osteoblasts which synthesize and release bioactive substances of extracellular matrix components, Mortality caused by age-related bone fractures or osteoporosis is steadily increasing worldwide as the population ages. Fibroblasts play an important role in the process of fracture healing. However, it is not clear how the growth factors and extracellular matrix stiffness of the bone-regeneration microenvironment affects the function of osteoblasts and fibroblasts in healing process. Therefore, this article focuses on the role of fibroblasts in the process of fracture healing and mechanisms of research progress.
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Affiliation(s)
- Hui Wang
- Department of Orthopedics, The First Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Li-li Qi
- Experimental Center for Teaching of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Clement Shema
- Department of Orthopedic Research Center, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
- International Education College of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Kui-ying Jiang
- National Demonstration Center for Experimental Basic Medical Education, Capital Medical University, Beijing, China
| | - Ping Ren
- Experimental Center for Teaching of Hebei Medical University, Shijiazhuang, Hebei, China
| | - He Wang
- Department of Pathogenic Biology, Hebei Medical University, Shijiazhuang, Hebei, China
| | - Lei Wang
- Department of Human Anatomy, Institute of Medicine and Health, Hebei Medical University, Shijiazhuang, Hebei, China
- The Key Laboratory of Neural and Vascular Biology, Ministry of Education, Hebei Medical University, Shijiazhuang, Hebei, China
- Neuroscience Research Center, Hebei Medical University, Shijiazhuang, Hebei, China
- Hebei Key Laboratory of Neurodegenerative Disease Mechanism, Shijiazhuang, Hebei, China
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14
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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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15
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Zhou Y, Cao T, Li Z, Qiao H, Dang E, Shao S, Wang G. Fibroblasts in immune-mediated inflammatory diseases: The soil of inflammation. Clin Immunol 2024; 258:109849. [PMID: 38008146 DOI: 10.1016/j.clim.2023.109849] [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: 07/09/2023] [Revised: 10/11/2023] [Accepted: 11/08/2023] [Indexed: 11/28/2023]
Abstract
As one of the most abundant stromal cells, fibroblasts are primarily responsible for the production and remodeling of the extracellular matrix. Traditionally, fibroblasts have been viewed as quiescent cells. However, recent advances in multi-omics technologies have demonstrated that fibroblasts exhibit remarkable functional diversity at the single-cell level. Additionally, fibroblasts are heterogeneous in their origins, tissue locations, and transitions with stromal cells. The dynamic nature of fibroblasts is further underscored by the fact that disease stages can impact their heterogeneity and behavior, particularly in immune-mediated inflammatory diseases such as psoriasis, inflammatory bowel diseases, and rheumatoid arthritis, etc. Fibroblasts can actively contribute to the disease initiation, progression, and relapse by responding to local microenvironmental signals, secreting downstream inflammatory factors, and interacting with immune cells during the pathological process. Here we focus on the development, plasticity, and heterogeneity of fibroblasts in inflammation, emphasizing the need for a developmental and dynamic perspective on fibroblasts.
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Affiliation(s)
- Yifan Zhou
- Department of Dermatology, Xijing hospital, Fourth Military Medical University, Xi'an, Shannxi 710032, China
| | - Tianyu Cao
- Department of Dermatology, Tangdu Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, China
| | - Zhiguo Li
- Department of Dermatology, Xijing hospital, Fourth Military Medical University, Xi'an, Shannxi 710032, China
| | - Hongjiang Qiao
- Department of Dermatology, Xijing hospital, Fourth Military Medical University, Xi'an, Shannxi 710032, China
| | - Erle Dang
- Department of Dermatology, Xijing hospital, Fourth Military Medical University, Xi'an, Shannxi 710032, China
| | - Shuai Shao
- Department of Dermatology, Xijing hospital, Fourth Military Medical University, Xi'an, Shannxi 710032, China.
| | - Gang Wang
- Department of Dermatology, Xijing hospital, Fourth Military Medical University, Xi'an, Shannxi 710032, China.
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16
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Zou DD, Sun YZ, Li XJ, Wu WJ, Xu D, He YT, Qi J, Tu Y, Tang Y, Tu YH, Wang XL, Li X, Lu FY, Huang L, Long H, He L, Li X. Single-cell sequencing highlights heterogeneity and malignant progression in actinic keratosis and cutaneous squamous cell carcinoma. eLife 2023; 12:e85270. [PMID: 38099574 PMCID: PMC10783873 DOI: 10.7554/elife.85270] [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: 11/30/2022] [Accepted: 12/14/2023] [Indexed: 01/12/2024] Open
Abstract
Cutaneous squamous cell carcinoma (cSCC) is the second most frequent of the keratinocyte-derived malignancies with actinic keratosis (AK) as a precancerous lesion. To comprehensively delineate the underlying mechanisms for the whole progression from normal skin to AK to invasive cSCC, we performed single-cell RNA sequencing (scRNA-seq) to acquire the transcriptomes of 138,982 cells from 13 samples of six patients including AK, squamous cell carcinoma in situ (SCCIS), cSCC, and their matched normal tissues, covering comprehensive clinical courses of cSCC. We identified diverse cell types, including important subtypes with different gene expression profiles and functions in major keratinocytes. In SCCIS, we discovered the malignant subtypes of basal cells with differential proliferative and migration potential. Differentially expressed genes (DEGs) analysis screened out multiple key driver genes including transcription factors along AK to cSCC progression. Immunohistochemistry (IHC)/immunofluorescence (IF) experiments and single-cell ATAC sequencing (scATAC-seq) data verified the expression changes of these genes. The functional experiments confirmed the important roles of these genes in regulating cell proliferation, apoptosis, migration, and invasion in cSCC tumor. Furthermore, we comprehensively described the tumor microenvironment (TME) landscape and potential keratinocyte-TME crosstalk in cSCC providing theoretical basis for immunotherapy. Together, our findings provide a valuable resource for deciphering the progression from AK to cSCC and identifying potential targets for anticancer treatment of cSCC.
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Affiliation(s)
- Dan-Dan Zou
- Department of Dermatology, First Affiliated Hospital of Kunming Medical UniversityYunnanChina
- Department of Dermatology, The Affiliated Hospital of Kunming University of Science and Technology, The First People's Hospital of Yunnan Province, KunmingYunnanChina
| | - Ya-Zhou Sun
- Clinical Big Data Research Center, The Seventh Affiliated Hospital of Sun Yat-sen UniversityShenzhen, GuangdongChina
- School of Medical, Shenzhen Campus of Sun Yat-sen UniversityShenzhen, GuangdongChina
| | - Xin-Jie Li
- School of Medical, Shenzhen Campus of Sun Yat-sen UniversityShenzhen, GuangdongChina
| | - Wen-Juan Wu
- Department of Dermatology, First Affiliated Hospital of Kunming Medical UniversityYunnanChina
| | - Dan Xu
- Department of Dermatology, First Affiliated Hospital of Kunming Medical UniversityYunnanChina
| | - Yu-Tong He
- School of Medical, Shenzhen Campus of Sun Yat-sen UniversityShenzhen, GuangdongChina
| | - Jue Qi
- Department of Dermatology, First Affiliated Hospital of Kunming Medical UniversityYunnanChina
| | - Ying Tu
- Department of Dermatology, First Affiliated Hospital of Kunming Medical UniversityYunnanChina
| | - Yang Tang
- Department of Dermatology, First Affiliated Hospital of Kunming Medical UniversityYunnanChina
| | - Yun-Hua Tu
- Department of Dermatology, First Affiliated Hospital of Kunming Medical UniversityYunnanChina
| | - Xiao-Li Wang
- Department of Dermatology, Changzheng Hospital, Naval Medical UniversityShanghaiChina
| | - Xing Li
- Department of Dermatology, People's Hospital of Chuxiong Yi Autonomous Prefecture, ChuxiongYunnanChina
| | - Feng-Yan Lu
- Department of Dermatology, Qujing Affiliated Hospital of Kunming Medical University, The First People’s Hospital of QujingYunnanChina
| | - Ling Huang
- Department of Dermatology, First Affiliated Hospital of Dali University, DaliYunnanChina
| | - Heng Long
- Wenshan Zhuang and Miao Autonomous Prefecture Dermatology Clinic, Wenshan Zhuang and Miao Autonomous Prefecture Specialist Hospital of Dermatology, WenshanYunnanChina
| | - Li He
- Department of Dermatology, First Affiliated Hospital of Kunming Medical UniversityYunnanChina
| | - Xin Li
- School of Medical, Shenzhen Campus of Sun Yat-sen UniversityShenzhen, GuangdongChina
- Guangdong Provincial Key Laboratory of Digestive Cancer Research, The Seventh Affiliated Hospital of Sun Yat-sen UniversityGuangdongChina
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17
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Liang NE, Griffin MF, Berry CE, Parker JB, Downer MA, Wan DC, Longaker MT. Attenuating Chronic Fibrosis: Decreasing Foreign Body Response with Acellular Dermal Matrix. TISSUE ENGINEERING. PART B, REVIEWS 2023; 29:671-680. [PMID: 37212342 DOI: 10.1089/ten.teb.2023.0060] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Surgical implants are increasingly used across multiple medical disciplines, with applications ranging from tissue reconstruction to improving compromised organ and limb function. Despite their significant potential for improving health and quality of life, biomaterial implant function is severely limited by the body's immune response to its presence: this is known as the foreign body response (FBR) and is characterized by chronic inflammation and fibrotic capsule formation. This response can result in life-threatening sequelae such as implant malfunction, superimposed infection, and associated vessel thrombosis, in addition to soft tissue disfigurement. Patients may require frequent medical visits, as well as repeated invasive procedures, increasing the burden on an already strained health care system. Currently, the FBR and the cells and molecular mechanisms that mediate it are poorly understood. With applications across a wide array of surgical specialties, acellular dermal matrix (ADM) has emerged as a potential solution to the fibrotic reaction seen with FBR. Although the mechanisms by which ADM decreases chronic fibrosis remain to be clearly characterized, animal studies across diverse surgical models point to its biomimetic properties that facilitate decreased periprosthetic inflammation and improved host cell incorporation. Impact Statement Foreign body response (FBR) is a significant limitation to the use of implantable biomaterials. Acellular dermal matrix (ADM) has been observed to decrease the fibrotic reaction seen with FBR, although its mechanistic details are poorly understood. This review is dedicated to summarizing the primary literature on the biology of FBR in the context of ADM use, using surgical models in breast reconstruction, abdominal and chest wall repair, and pelvic reconstruction. This article will provide readers with an overarching review of shared mechanisms for ADM across multiple surgical models and diverse anatomical applications.
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Affiliation(s)
- Norah E Liang
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, California, USA
| | - Michelle F Griffin
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, California, USA
| | - Charlotte E Berry
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, California, USA
| | - Jennifer B Parker
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, California, USA
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, California, USA
| | - Mauricio A Downer
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, California, USA
| | - Derrick C Wan
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, California, USA
| | - Michael T Longaker
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, California, USA
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, California, USA
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18
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Flora A, Jepsen R, Kozera EK, Woods JA, Cains GD, Radzieta M, Jensen SO, Malone M, Frew JW. Human dermal fibroblast subpopulations and epithelial mesenchymal transition signals in hidradenitis suppurativa tunnels are normalized by spleen tyrosine kinase antagonism in vivo. PLoS One 2023; 18:e0282763. [PMID: 37922232 PMCID: PMC10624284 DOI: 10.1371/journal.pone.0282763] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Accepted: 05/19/2023] [Indexed: 11/05/2023] Open
Abstract
Hidradenitis Suppurativa is a chronic inflammatory disease of which the pathogenesis is incompletely understood. Dermal fibroblasts have been previously identified as a major source of inflammatory cytokines, however information pertaining to the characteristics of subpopulations of fibroblasts in HS remains unexplored. Using in silico-deconvolution of whole-tissue RNAseq, Nanostring gene expression panels and confirmatory immunohistochemistry we identified fibroblast subpopulations in HS tissue and their relationship to disease severity and lesion morphology. Gene signatures of SFRP2+ fibroblast subsets were increased in lesional tissue, with gene signatures of SFRP1+ fibroblast subsets decreased. SFRP2+ and CXCL12+ fibroblast numbers, measured by IHC, were increased in HS tissue, with greater numbers associated with epithelialized tunnels and Hurley Stage 3 disease. Pro-inflammatory CXCL12+ fibroblasts were also increased, with reductions in SFRP1+ fibroblasts compared to healthy controls. Evidence of Epithelial Mesenchymal Transition was seen via altered gene expression of SNAI2 and altered protein expression of ZEB1, TWIST1, Snail/Slug, E-Cadherin and N-Cadherin in HS lesional tissue. The greatest dysregulation of EMT associated proteins was seen in biopsies containing epithelialized tunnels. The use of the oral Spleen tyrosine Kinase inhibitor Fostamatinib significantly reduced expression of genes associated with chronic inflammation, fibroblast proliferation and migration suggesting a potential role for targeting fibroblast activity in HS.
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Affiliation(s)
- Akshay Flora
- Laboratory of Translational Cutaneous Medicine, Ingham Institute for Applied Medical Research, Sydney, Australia
- University of New South Wales, Sydney, Australia
- Department of Dermatology, Liverpool Hospital, Sydney, Australia
| | | | - Emily K. Kozera
- University of New South Wales, Sydney, Australia
- Department of Dermatology, Liverpool Hospital, Sydney, Australia
| | - Jane A. Woods
- University of New South Wales, Sydney, Australia
- Department of Dermatology, Liverpool Hospital, Sydney, Australia
| | - Geoffrey D. Cains
- University of New South Wales, Sydney, Australia
- Department of Dermatology, Liverpool Hospital, Sydney, Australia
| | - Michael Radzieta
- South West Sydney Limb Preservation and Wound Research, Ingham Institute for Applied Medical Research, Liverpool, Australia
- School of Medicine, Western Sydney University, Sydney, Australia
| | - Slade O. Jensen
- School of Medicine, Western Sydney University, Sydney, Australia
| | - Matthew Malone
- South West Sydney Limb Preservation and Wound Research, Ingham Institute for Applied Medical Research, Liverpool, Australia
- School of Medicine, Western Sydney University, Sydney, Australia
| | - John W. Frew
- Laboratory of Translational Cutaneous Medicine, Ingham Institute for Applied Medical Research, Sydney, Australia
- University of New South Wales, Sydney, Australia
- Department of Dermatology, Liverpool Hospital, Sydney, Australia
- Holdsworth House Medical Practice, Sydney, Australia
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19
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Itai E, Atsugi T, Inomata K, Yamashita M, Kaji K, Nanba D, Naru E. Single-cell analysis of human dermal fibroblasts isolated from a single male donor over 35 years. Exp Dermatol 2023; 32:1982-1995. [PMID: 37727050 DOI: 10.1111/exd.14929] [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: 08/09/2023] [Revised: 08/30/2023] [Accepted: 09/02/2023] [Indexed: 09/21/2023]
Abstract
The aim of this study is to examine the effects of ageing on dermal fibroblast heterogeneity based on samples obtained from the same donor. We used a dermal fibroblast lineage (named ASF-4 cell lines) isolated from the inner side of the upper arm of a healthy male donor over a 35-year period, beginning at 36 years of age. Because clonal analysis of ASF-4 cell lines demonstrated a donor age-dependent loss of proliferative capacity and acquisition of senescent traits at the single-cell level, cultured cells frozen at passage 10 at ages 36 and 72 years were subjected to single-cell RNA sequencing. Transcriptome analysis revealed an increase in senescent fibroblasts and downregulation of genes associated with extracellular matrix remodelling with ageing. In addition, two putative differentiation pathways, with one endpoint consisting of senescent fibroblasts and the other without, were speculated using a pseudo-time analysis. Knockdown of the characteristic gene of the non-senescent fibroblast cluster endpoint, EFEMP2, accelerated cellular senescence. This was also confirmed in two other normal human dermal fibroblast cell lines. The detection of a common cellular senescence-related gene from single-donor analysis is notable. This study provides new insights into the behaviour of dermal fibroblasts during skin ageing.
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Affiliation(s)
- Eriko Itai
- Research Laboratories, KOSÉ Corporation, Tokyo, Japan
| | - Toru Atsugi
- Research Laboratories, KOSÉ Corporation, Tokyo, Japan
| | - Ken Inomata
- Research Laboratories, KOSÉ Corporation, Tokyo, Japan
| | | | - Kazuhiko Kaji
- Research Laboratories, KOSÉ Corporation, Tokyo, Japan
| | - Daisuke Nanba
- Division of Aging and Regeneration, The Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Eiji Naru
- Research Laboratories, KOSÉ Corporation, Tokyo, Japan
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20
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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: 13] [Impact Index Per Article: 13.0] [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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21
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Thrane K, Winge MCG, Wang H, Chen L, Guo MG, Andersson A, Abalo XM, Yang X, Kim DS, Longo SK, Soong BY, Meyers JM, Reynolds DL, McGeever A, Demircioglu D, Hasson D, Mirzazadeh R, Rubin AJ, Bae GH, Karkanias J, Rieger K, Lundeberg J, Ji AL. Single-Cell and Spatial Transcriptomic Analysis of Human Skin Delineates Intercellular Communication and Pathogenic Cells. J Invest Dermatol 2023; 143:2177-2192.e13. [PMID: 37142187 PMCID: PMC10592679 DOI: 10.1016/j.jid.2023.02.040] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 01/26/2023] [Accepted: 02/16/2023] [Indexed: 05/06/2023]
Abstract
Epidermal homeostasis is governed by a balance between keratinocyte proliferation and differentiation with contributions from cell-cell interactions, but conserved or divergent mechanisms governing this equilibrium across species and how an imbalance contributes to skin disease are largely undefined. To address these questions, human skin single-cell RNA sequencing and spatial transcriptomics data were integrated and compared with mouse skin data. Human skin cell-type annotation was improved using matched spatial transcriptomics data, highlighting the importance of spatial context in cell-type identity, and spatial transcriptomics refined cellular communication inference. In cross-species analyses, we identified a human spinous keratinocyte subpopulation that exhibited proliferative capacity and a heavy metal processing signature, which was absent in mouse and may account for species differences in epidermal thickness. This human subpopulation was expanded in psoriasis and zinc-deficiency dermatitis, attesting to disease relevance and suggesting a paradigm of subpopulation dysfunction as a hallmark of the disease. To assess additional potential subpopulation drivers of skin diseases, we performed cell-of-origin enrichment analysis within genodermatoses, nominating pathogenic cell subpopulations and their communication pathways, which highlighted multiple potential therapeutic targets. This integrated dataset is encompassed in a publicly available web resource to aid mechanistic and translational studies of normal and diseased skin.
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Affiliation(s)
- Kim Thrane
- Science for Life Laboratory, Department of Gene Technology, KTH Royal Institute of Technology, Solna, Sweden
| | - Mårten C G Winge
- Program in Epithelial Biology, Department of Dermatology, Stanford University School of Medicine, Stanford, California, USA
| | - Hongyu Wang
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, New York, New York, USA; Black Family Stem Institute, Icahn School of Medicine at Mount Sinai, New York, New York, USA; School of Computer Science and Engineering, Northwestern Polytechnical University, Xi'an, China
| | - Larry Chen
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, New York, New York, USA; Black Family Stem Institute, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Margaret G Guo
- Program in Epithelial Biology, Department of Dermatology, Stanford University School of Medicine, Stanford, California, USA; Biomedical Informatics Program, Department of Biomedical Data Science, Stanford University School of Medicine, Stanford, California, USA
| | - Alma Andersson
- Science for Life Laboratory, Department of Gene Technology, KTH Royal Institute of Technology, Solna, Sweden
| | - Xesús M Abalo
- Science for Life Laboratory, Department of Gene Technology, KTH Royal Institute of Technology, Solna, Sweden
| | - Xue Yang
- Program in Epithelial Biology, Department of Dermatology, Stanford University School of Medicine, Stanford, California, USA
| | - Daniel S Kim
- Program in Epithelial Biology, Department of Dermatology, Stanford University School of Medicine, Stanford, California, USA; Biomedical Informatics Program, Department of Biomedical Data Science, Stanford University School of Medicine, Stanford, California, USA
| | - Sophia K Longo
- Program in Epithelial Biology, Department of Dermatology, Stanford University School of Medicine, Stanford, California, USA
| | - Brian Y Soong
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, New York, New York, USA; Black Family Stem Institute, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Jordan M Meyers
- Program in Epithelial Biology, Department of Dermatology, Stanford University School of Medicine, Stanford, California, USA
| | - David L Reynolds
- Program in Epithelial Biology, Department of Dermatology, Stanford University School of Medicine, Stanford, California, USA
| | - Aaron McGeever
- Chan Zuckerberg Biohub San Francisco, San Francisco, California, USA
| | - Deniz Demircioglu
- Bioinformatics for Next Generation Sequencing Core, The Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Dan Hasson
- Bioinformatics for Next Generation Sequencing Core, The Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, New York, USA; Graduate School of Biomedical Sciences, Icahn School of Medicine at Mount Sinai, New York, New York, USA; Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, New York, USA; The Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Reza Mirzazadeh
- Science for Life Laboratory, Department of Gene Technology, KTH Royal Institute of Technology, Solna, Sweden
| | - Adam J Rubin
- Program in Epithelial Biology, Department of Dermatology, Stanford University School of Medicine, Stanford, California, USA
| | - Gordon H Bae
- Program in Epithelial Biology, Department of Dermatology, Stanford University School of Medicine, Stanford, California, USA
| | - Jim Karkanias
- Chan Zuckerberg Biohub San Francisco, San Francisco, California, USA
| | - Kerri Rieger
- Program in Epithelial Biology, Department of Dermatology, Stanford University School of Medicine, Stanford, California, USA
| | - Joakim Lundeberg
- Science for Life Laboratory, Department of Gene Technology, KTH Royal Institute of Technology, Solna, Sweden
| | - Andrew L Ji
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, New York, New York, USA; Black Family Stem Institute, Icahn School of Medicine at Mount Sinai, New York, New York, USA; Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, New York, USA; The Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, New York, USA.
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22
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Liu Y, Plikus MV. Mapping Human Skin: One Sequenced Cell at a Time. J Invest Dermatol 2023; 143:2093-2096. [PMID: 37747389 DOI: 10.1016/j.jid.2023.03.1678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 03/31/2023] [Indexed: 09/26/2023]
Affiliation(s)
- Yingzi Liu
- Department of Developmental and Cell Biology, University of California, Irvine, Irvine, California, USA; Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, Irvine, California, USA
| | - Maksim V Plikus
- Department of Developmental and Cell Biology, University of California, Irvine, Irvine, California, USA; Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, Irvine, California, USA; NSF-Simons Center for Multiscale Cell Fate Research, University of California, Irvine, Irvine, California, USA; Center for Complex Biological Systems, University of California, Irvine, Irvine, California, USA.
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23
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Anderson-Crannage M, Ascensión AM, Ibanez-Solé O, Zhu H, Schaefer E, Ottomanelli D, Hochberg B, Pan J, Luo W, Tian M, Chu Y, Cairo MS, Izeta A, Liao Y. Inflammation-mediated fibroblast activation and immune dysregulation in collagen VII-deficient skin. Front Immunol 2023; 14:1211505. [PMID: 37809094 PMCID: PMC10557493 DOI: 10.3389/fimmu.2023.1211505] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 08/17/2023] [Indexed: 10/10/2023] Open
Abstract
Inflammation is known to play a critical role in all stages of tumorigenesis; however, less is known about how it predisposes the tissue microenvironment preceding tumor formation. Recessive dystrophic epidermolysis bullosa (RDEB), a skin-blistering disease secondary to COL7A1 mutations and associated with chronic wounding, inflammation, fibrosis, and cutaneous squamous cell carcinoma (cSCC), models this dynamic. Here, we used single-cell RNA sequencing (scRNAseq) to analyze gene expression patterns in skin cells from a mouse model of RDEB. We uncovered a complex landscape within the RDEB dermal microenvironment that exhibited altered metabolism, enhanced angiogenesis, hyperproliferative keratinocytes, infiltration and activation of immune cell populations, and inflammatory fibroblast priming. We demonstrated the presence of activated neutrophil and Langerhans cell subpopulations and elevated expression of PD-1 and PD-L1 in T cells and antigen-presenting cells, respectively. Unsupervised clustering within the fibroblast population further revealed two differentiation pathways in RDEB fibroblasts, one toward myofibroblasts and the other toward a phenotype that shares the characteristics of inflammatory fibroblast subsets in other inflammatory diseases as well as the IL-1-induced inflammatory cancer-associated fibroblasts (iCAFs) reported in various cancer types. Quantitation of inflammatory cytokines indicated dynamic waves of IL-1α, TGF-β1, TNF, IL-6, and IFN-γ concentrations, along with dermal NF-κB activation preceding JAK/STAT signaling. We further demonstrated the divergent and overlapping roles of these cytokines in inducing inflammatory phenotypes in RDEB patients as well as RDEB mouse-derived fibroblasts together with their healthy controls. In summary, our data have suggested a potential role of inflammation, driven by the chronic release of inflammatory cytokines such as IL-1, in creating an immune-suppressed dermal microenvironment that underlies RDEB disease progression.
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Affiliation(s)
- Morgan Anderson-Crannage
- Department of Pediatrics, New York Medical College, Valhalla, NY, United States
- Department of Cell Biology and Anatomy, New York Medical College, Valhalla, NY, United States
| | - Alex M. Ascensión
- Biodonostia Health Research Institute, Tissue Engineering Group, San Sebastian, Spain
| | - Olga Ibanez-Solé
- Biodonostia Health Research Institute, Tissue Engineering Group, San Sebastian, Spain
| | - Hongwen Zhu
- Department of Research & Development, Guizhou Atlasus Technology Co., Ltd., Guiyang, China
| | - Edo Schaefer
- Department of Pediatrics, New York Medical College, Valhalla, NY, United States
| | - Darcy Ottomanelli
- Department of Pediatrics, New York Medical College, Valhalla, NY, United States
| | - Bruno Hochberg
- Department of Pediatrics, New York Medical College, Valhalla, NY, United States
| | - Jian Pan
- Department of Pediatrics, New York Medical College, Valhalla, NY, United States
| | - Wen Luo
- Department of Pediatrics, New York Medical College, Valhalla, NY, United States
| | - Meijuan Tian
- Department of Pediatrics, New York Medical College, Valhalla, NY, United States
| | - Yaya Chu
- Department of Pediatrics, New York Medical College, Valhalla, NY, United States
| | - Mitchell S. Cairo
- Department of Pediatrics, New York Medical College, Valhalla, NY, United States
- Department of Cell Biology and Anatomy, New York Medical College, Valhalla, NY, United States
- Department of Medicine, New York Medical College, Valhalla, NY, United States
- Department of Pathology, Microbiology and Immunology, New York Medical College, Valhalla, NY, United States
| | - Ander Izeta
- Biodonostia Health Research Institute, Tissue Engineering Group, San Sebastian, Spain
- Department of Biomedical Engineering and Science, School of Engineering, Tecnun University of Navarra, San Sebastian, Spain
| | - Yanling Liao
- Department of Pediatrics, New York Medical College, Valhalla, NY, United States
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24
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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: 11] [Impact Index Per Article: 11.0] [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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25
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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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26
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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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27
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Alkon N, Assen FP, Arnoldner T, Bauer WM, Medjimorec MA, Shaw LE, Rindler K, Holzer G, Weber P, Weninger W, Freystätter C, Chennareddy S, Kinaciyan T, Farlik M, Jonak C, Griss J, Bangert C, Brunner PM. Single-cell RNA sequencing defines disease-specific differences between chronic nodular prurigo and atopic dermatitis. J Allergy Clin Immunol 2023; 152:420-435. [PMID: 37210042 DOI: 10.1016/j.jaci.2023.04.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 03/12/2023] [Accepted: 04/19/2023] [Indexed: 05/22/2023]
Abstract
BACKGROUND Chronic nodular prurigo (CNPG) is an inflammatory skin disease that is maintained by a chronic itch-scratch cycle likely rooted in neuroimmunological dysregulation. This condition may be associated with atopy in some patients, and there are now promising therapeutic results from blocking type 2 cytokines such as IL-4, IL-13, and IL-31. OBJECTIVES This study aimed to improve the understanding of pathomechanisms underlying CNPG as well as molecular relationships between CNPG and atopic dermatitis (AD). METHODS We profiled skin lesions from patients with CNPG in comparison with AD and healthy control individuals using single-cell RNA sequencing combined with T-cell receptor sequencing. RESULTS We found type 2 immune skewing in both CNPG and AD, as evidenced by CD4+ helper T cells expressing IL13. However, only AD harbored an additional, oligoclonally expanded CD8A+IL9R+IL13+ cytotoxic T-cell population, and immune activation pathways were highly upregulated in AD, but less so in CNPG. Conversely, CNPG showed signatures of extracellular matrix organization, collagen synthesis, and fibrosis, including a unique population of CXCL14-IL24+ secretory papillary fibroblasts. Besides known itch mediators such as IL31 and oncostatin M, we also detected increased levels of neuromedin B in fibroblasts of CNPG lesions compared with AD and HC, with neuromedin B receptors detectable on some nerve endings. CONCLUSIONS These data show that CNPG does not harbor the strong disease-specific immune activation pathways that are typically found in AD but is rather characterized by upregulated stromal remodeling mechanisms that might have a direct impact on itch fibers.
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Affiliation(s)
- Natalia Alkon
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Frank P Assen
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Tamara Arnoldner
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Wolfgang M Bauer
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Marco A Medjimorec
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Lisa E Shaw
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Katharina Rindler
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Gregor Holzer
- Department of Dermatology, Klinik Donaustadt, Vienna, Austria
| | - Philipp Weber
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Wolfgang Weninger
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Christian Freystätter
- Department of Plastic, Reconstructive and Aesthetic Surgery, Medical University of Vienna, Vienna, Austria
| | - Sumanth Chennareddy
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Tamar Kinaciyan
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Matthias Farlik
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Constanze Jonak
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Johannes Griss
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Christine Bangert
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Patrick M Brunner
- Department of Dermatology, Medical University of Vienna, Vienna, Austria; Department of Dermatology, Icahn School of Medicine at Mount Sinai, New York, NY.
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Bensa T, Tekkela S, Rognoni E. Skin fibroblast functional heterogeneity in health and disease. J Pathol 2023; 260:609-620. [PMID: 37553730 DOI: 10.1002/path.6159] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 06/12/2023] [Accepted: 06/14/2023] [Indexed: 08/10/2023]
Abstract
Fibroblasts are the major cell population of connective tissue, including the skin dermis, and are best known for their function in depositing and remodelling the extracellular matrix. Besides their role in extracellular matrix homeostasis, fibroblasts have emerged as key players in many biological processes ranging from tissue immunity and wound healing to hair follicle development. Recent advances in single-cell RNA-sequencing technologies have revealed an astonishing transcriptional fibroblast heterogeneity in the skin and other organs. A key challenge in the field is to understand the functional relevance and significance of the identified new cell clusters in health and disease. Here, we discuss the functionally distinct fibroblast subtypes identified in skin homeostasis and repair and how they evolve in fibrotic disease conditions, in particular keloid scars and cancer. © 2023 The Authors. The Journal of Pathology published by John Wiley & Sons Ltd on behalf of The Pathological Society of Great Britain and Ireland.
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Affiliation(s)
- Tjaša Bensa
- Centre for Cell Biology & Cutaneous Research, Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Stavroula Tekkela
- Centre for Cell Biology & Cutaneous Research, Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Emanuel Rognoni
- Centre for Cell Biology & Cutaneous Research, Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
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29
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Liu WX, Li CX, Xie XX, Ge W, Qiao T, Sun XF, Shen W, Cheng SF. Transcriptomic landscape reveals germline potential of porcine skin-derived multipotent dermal fibroblast progenitors. Cell Mol Life Sci 2023; 80:224. [PMID: 37480481 PMCID: PMC11072884 DOI: 10.1007/s00018-023-04869-7] [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: 03/16/2023] [Revised: 06/15/2023] [Accepted: 07/10/2023] [Indexed: 07/24/2023]
Abstract
According to estimations, approximately about 15% of couples worldwide suffer from infertility, in which individuals with azoospermia or oocyte abnormalities cannot be treated with assisted reproductive technology. The skin-derived stem cells (SDSCs) differentiation into primordial germ cell-like cells (PGCLCs) is one of the major breakthroughs in the field of stem cells intervention for infertility treatment in recent years. However, the cellular origin of SDSCs and their dynamic changes in transcription profile during differentiation into PGCLCs in vitro remain largely undissected. Here, the results of single-cell RNA sequencing indicated that porcine SDSCs are mainly derived from multipotent dermal fibroblast progenitors (MDFPs), which are regulated by growth factors (EGF/bFGF). Importantly, porcine SDSCs exhibit pluripotency for differentiating into three germ layers and can effectively differentiate into PGCLCs through complex transcriptional regulation involving histone modification. Moreover, this study also highlights that porcine SDSC-derived PGCLCs specification exhibit conservation with the human primordial germ cells lineage and that its proliferation is mediated by the MAPK signaling pathway. Our findings provide substantial novel insights into the field of regenerative medicine in which stem cells differentiate into germ cells in vitro, as well as potential therapeutic effects in individuals with azoospermia and/or defective oocytes.
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Affiliation(s)
- Wen-Xiang Liu
- College of Life Sciences, Key Laboratory of Animal Reproduction and Biotechnology in Universities of Shandong, Qingdao Agricultural University, Qingdao, 266109, China
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, College of Life Sciences, Inner Mongolia University, Hohhot, 010021, China
| | - Chun-Xiao Li
- College of Life Sciences, Key Laboratory of Animal Reproduction and Biotechnology in Universities of Shandong, Qingdao Agricultural University, Qingdao, 266109, China
| | - Xin-Xiang Xie
- College of Life Sciences, Key Laboratory of Animal Reproduction and Biotechnology in Universities of Shandong, Qingdao Agricultural University, Qingdao, 266109, China
| | - Wei Ge
- College of Life Sciences, Key Laboratory of Animal Reproduction and Biotechnology in Universities of Shandong, Qingdao Agricultural University, Qingdao, 266109, China
| | - Tian Qiao
- College of Life Sciences, Key Laboratory of Animal Reproduction and Biotechnology in Universities of Shandong, Qingdao Agricultural University, Qingdao, 266109, China
| | - Xiao-Feng Sun
- Anqiu Women and Children's Hospital, Weifang, 262100, China
| | - Wei Shen
- College of Life Sciences, Key Laboratory of Animal Reproduction and Biotechnology in Universities of Shandong, Qingdao Agricultural University, Qingdao, 266109, China.
| | - Shun-Feng Cheng
- College of Life Sciences, Key Laboratory of Animal Reproduction and Biotechnology in Universities of Shandong, Qingdao Agricultural University, Qingdao, 266109, China.
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30
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Werner G, Sanyal A, Mirizio E, Hutchins T, Tabib T, Lafyatis R, Jacobe H, Torok KS. Single-Cell Transcriptome Analysis Identifies Subclusters with Inflammatory Fibroblast Responses in Localized Scleroderma. Int J Mol Sci 2023; 24:9796. [PMID: 37372943 DOI: 10.3390/ijms24129796] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Revised: 05/19/2023] [Accepted: 05/27/2023] [Indexed: 06/29/2023] Open
Abstract
Localized scleroderma (LS) is an autoimmune disease with both inflammatory and fibrotic components causing an abnormal deposition of collagen in the skin and underlying tissue, often leading to disfigurement and disability. Much of its pathophysiology is extrapolated from systemic sclerosis (SSc) since the histopathology findings in the skin are nearly identical. However, LS is critically understudied. Single-cell RNA sequencing (scRNA seq) technology provides a novel way to obtain detailed information at the individual cellular level, overcoming this barrier. Here, we analyzed the affected skin of 14 patients with LS (pediatric and adult) and 14 healthy controls. Fibroblast populations were the focus, since they are the main drivers of fibrosis in SSc. We identified 12 fibroblast subclusters in LS, which overall had an inflammatory gene expression (IFN and HLA-associated genes). A myofibroblast-like cluster (SFRP4/PRSS23) was more prevalent in LS subjects and shared many upregulated genes expressed in SSc-associated myofibroblasts, though it also had strong expression of CXCL9/10/11, known CXCR3 ligands. A CXCL2/IRF1 cluster identified was unique to LS, with a robust inflammatory gene signature, including IL-6, and according to cell communication analysis are influenced by macrophages. In summary, potential disease-propagating fibroblasts and associated gene signatures were identified in LS skin via scRNA seq.
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Affiliation(s)
- Giffin Werner
- Department of Pediatrics (Rheumatology), University of Pittsburgh, Pittsburgh, PA 15224, USA
| | - Anwesha Sanyal
- Department of Pediatrics (Rheumatology), University of Pittsburgh, Pittsburgh, PA 15224, USA
| | - Emily Mirizio
- Department of Pediatrics (Rheumatology), University of Pittsburgh, Pittsburgh, PA 15224, USA
| | - Theresa Hutchins
- Department of Pediatrics (Rheumatology), University of Pittsburgh, Pittsburgh, PA 15224, USA
| | - Tracy Tabib
- Division of Rheumatology and Clinical Immunology, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Robert Lafyatis
- Division of Rheumatology and Clinical Immunology, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Heidi Jacobe
- Department of Dermatology, University of Texas Southwestern, Dallas, TX 75390, USA
| | - Kathryn S Torok
- Department of Pediatrics (Rheumatology), University of Pittsburgh, Pittsburgh, PA 15224, USA
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31
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Transcriptional heterogeneity in human diabetic foot wounds. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.02.16.528839. [PMID: 36824808 PMCID: PMC9949055 DOI: 10.1101/2023.02.16.528839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Abstract
Wound repair requires the coordination of multiple cell types including immune cells and tissue resident cells to coordinate healing and return of tissue function. Diabetic foot ulceration is a type of chronic wound that impacts over 4 million patients in the US and over 7 million worldwide (Edmonds et al., 2021). Yet, the cellular and molecular mechanisms that go awry in these wounds are not fully understood. Here, by profiling chronic foot ulcers from non-diabetic (NDFUs) and diabetic (DFUs) patients using single-cell RNA sequencing, we find that DFUs display transcription changes that implicate reduced keratinocyte differentiation, altered fibroblast function and lineages, and defects in macrophage metabolism, inflammation, and ECM production compared to NDFUs. Furthermore, analysis of cellular interactions reveals major alterations in several signaling pathways that are altered in DFUs. These data provide a view of the mechanisms by which diabetes alters healing of foot ulcers and may provide therapeutic avenues for DFU treatments.
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32
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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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33
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Wiedemann J, Billi AC, Bocci F, Kashgari G, Xing E, Tsoi LC, Meller L, Swindell WR, Wasikowski R, Xing X, Ma F, Gharaee-Kermani M, Kahlenberg JM, Harms PW, Maverakis E, Nie Q, Gudjonsson JE, Andersen B. Differential cell composition and split epidermal differentiation in human palm, sole, and hip skin. Cell Rep 2023; 42:111994. [PMID: 36732947 PMCID: PMC9939370 DOI: 10.1016/j.celrep.2023.111994] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 08/31/2022] [Accepted: 01/04/2023] [Indexed: 01/26/2023] Open
Abstract
Palmoplantar skin is structurally and functionally unique, but the transcriptional programs driving this specialization are unclear. Here, we use bulk and single-cell RNA sequencing of human palm, sole, and hip skin to describe the distinguishing characteristics of palmoplantar and non-palmoplantar skin while also uncovering differences between palmar and plantar sites. Our approach reveals an altered immune environment in palmoplantar skin, with downregulation of diverse immunological processes and decreased immune cell populations. Further, we identify specific fibroblast populations that appear to orchestrate key differences in cell-cell communication in palm, sole, and hip. Dedicated keratinocyte analysis highlights major differences in basal cell fraction among the three sites and demonstrates the existence of two spinous keratinocyte populations constituting parallel, site-selective epidermal differentiation trajectories. In summary, this deep characterization of highly adapted palmoplantar skin contributes key insights into the fundamental biology of human skin and provides a valuable data resource for further investigation.
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Affiliation(s)
- Julie Wiedemann
- Mathematical, Computational and Systems Biology (MCSB) Program, University of California, Irvine, Irvine, CA, USA
| | - Allison C Billi
- Department of Dermatology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Federico Bocci
- Department of Mathematics, University of California, Irvine, Irvine, CA, USA; NSF-Simons Center for Multiscale Cell Fate Research, University of California, Irvine, Irvine, CA, USA
| | - Ghaidaa Kashgari
- Department of Biological Chemistry, School of Medicine, University of California, Irvine, Irvine, CA, USA
| | - Enze Xing
- Department of Dermatology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Lam C Tsoi
- Department of Dermatology, University of Michigan Medical School, Ann Arbor, MI, USA; Department of Computational Medicine and Bioinformatics, University of Michigan Medical School, Ann Arbor, MI, USA; Department of Biostatistics, School of Public Health, University of Michigan, Ann Arbor, MI, USA
| | - Leo Meller
- Department of Biological Chemistry, School of Medicine, University of California, Irvine, Irvine, CA, USA
| | - William R Swindell
- Department of Internal Medicine, The Jewish Hospital, Cincinnati, OH, USA
| | - Rachael Wasikowski
- Department of Dermatology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Xianying Xing
- Department of Dermatology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Feiyang Ma
- Department of Dermatology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Mehrnaz Gharaee-Kermani
- Department of Dermatology, University of Michigan Medical School, Ann Arbor, MI, USA; Division of Rheumatology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
| | - J Michelle Kahlenberg
- Department of Dermatology, University of Michigan Medical School, Ann Arbor, MI, USA; Division of Rheumatology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Paul W Harms
- Department of Dermatology, University of Michigan Medical School, Ann Arbor, MI, USA; Department of Pathology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Emanual Maverakis
- Department of Dermatology, University of California Davis School of Medicine, Sacramento, CA, USA
| | - Qing Nie
- Department of Mathematics, University of California, Irvine, Irvine, CA, USA; NSF-Simons Center for Multiscale Cell Fate Research, University of California, Irvine, Irvine, CA, USA; Department of Developmental & Cell Biology, School of Biological Sciences, University of California, Irvine, Irvine, CA, USA
| | - Johann E Gudjonsson
- Department of Dermatology, University of Michigan Medical School, Ann Arbor, MI, USA.
| | - Bogi Andersen
- Department of Biological Chemistry, School of Medicine, University of California, Irvine, Irvine, CA, USA; Department of Medicine, School of Medicine, University of California, Irvine, Irvine, CA, USA.
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34
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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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35
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Schuster R, Younesi F, Ezzo M, Hinz B. The Role of Myofibroblasts in Physiological and Pathological Tissue Repair. Cold Spring Harb Perspect Biol 2023; 15:cshperspect.a041231. [PMID: 36123034 PMCID: PMC9808581 DOI: 10.1101/cshperspect.a041231] [Citation(s) in RCA: 44] [Impact Index Per Article: 44.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Myofibroblasts are the construction workers of wound healing and repair damaged tissues by producing and organizing collagen/extracellular matrix (ECM) into scar tissue. Scar tissue effectively and quickly restores the mechanical integrity of lost tissue architecture but comes at the price of lost tissue functionality. Fibrotic diseases caused by excessive or persistent myofibroblast activity can lead to organ failure. This review defines myofibroblast terminology, phenotypic characteristics, and functions. We will focus on the central role of the cell, ECM, and tissue mechanics in regulating tissue repair by controlling myofibroblast action. Additionally, we will discuss how therapies based on mechanical intervention potentially ameliorate wound healing outcomes. Although myofibroblast physiology and pathology affect all organs, we will emphasize cutaneous wound healing and hypertrophic scarring as paradigms for normal tissue repair versus fibrosis. A central message of this review is that myofibroblasts can be activated from multiple cell sources, varying with local environment and type of injury, to either restore tissue integrity and organ function or create an inappropriate mechanical environment.
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Affiliation(s)
- Ronen Schuster
- Faculty of Dentistry, University of Toronto, Toronto, M5S 3E2 Ontario, Canada
| | - Fereshteh Younesi
- Faculty of Dentistry, University of Toronto, Toronto, M5S 3E2 Ontario, Canada.,Laboratory of Tissue Repair and Regeneration, Keenan Research Centre for Biomedical Science of the St. Michael's Hospital, Toronto, Ontario M5B 1T8, Canada
| | - Maya Ezzo
- Faculty of Dentistry, University of Toronto, Toronto, M5S 3E2 Ontario, Canada.,Laboratory of Tissue Repair and Regeneration, Keenan Research Centre for Biomedical Science of the St. Michael's Hospital, Toronto, Ontario M5B 1T8, Canada
| | - Boris Hinz
- Faculty of Dentistry, University of Toronto, Toronto, M5S 3E2 Ontario, Canada.,Laboratory of Tissue Repair and Regeneration, Keenan Research Centre for Biomedical Science of the St. Michael's Hospital, Toronto, Ontario M5B 1T8, Canada
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36
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Gauthier V, Kyriazi M, Nefla M, Pucino V, Raza K, Buckley CD, Alsaleh G. Fibroblast heterogeneity: Keystone of tissue homeostasis and pathology in inflammation and ageing. Front Immunol 2023; 14:1137659. [PMID: 36926329 PMCID: PMC10011104 DOI: 10.3389/fimmu.2023.1137659] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Accepted: 02/14/2023] [Indexed: 03/06/2023] Open
Abstract
Fibroblasts, derived from the embryonic mesenchyme, are a diverse array of cells with roles in development, homeostasis, repair, and disease across tissues. In doing so, fibroblasts maintain micro-environmental homeostasis and create tissue niches by producing a complex extracellular matrix (ECM) including various structural proteins. Although long considered phenotypically homogenous and functionally identical, the emergence of novel technologies such as single cell transcriptomics has allowed the identification of different phenotypic and cellular states to be attributed to fibroblasts, highlighting their role in tissue regulation and inflammation. Therefore, fibroblasts are now recognised as central actors in many diseases, increasing the need to discover new therapies targeting those cells. Herein, we review the phenotypic heterogeneity and functionality of these cells and their roles in health and disease.
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Affiliation(s)
- Vincent Gauthier
- Botnar Institute for Musculoskeletal Sciences, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences (NDORMS), University of Oxford, Oxford, United Kingdom.,The Kennedy Institute of Rheumatology, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences (NDORMS), University of Oxford, Oxford, United Kingdom.,Institute of Inflammation and Ageing, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Maria Kyriazi
- Botnar Institute for Musculoskeletal Sciences, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences (NDORMS), University of Oxford, Oxford, United Kingdom.,Faculty of Medical Sciences, Newcastle University, Newcastle-upon-Tyne, United Kingdom
| | - Meriam Nefla
- The Kennedy Institute of Rheumatology, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences (NDORMS), University of Oxford, Oxford, United Kingdom.,Institute of Inflammation and Ageing, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Valentina Pucino
- The Kennedy Institute of Rheumatology, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences (NDORMS), University of Oxford, Oxford, United Kingdom.,Institute of Inflammation and Ageing, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Karim Raza
- Institute of Inflammation and Ageing, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom.,Department of Rheumatology, Sandwell and West, Birmingham Hospitals NHS Trust, Birmingham, United Kingdom
| | - Christopher D Buckley
- The Kennedy Institute of Rheumatology, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences (NDORMS), University of Oxford, Oxford, United Kingdom.,Institute of Inflammation and Ageing, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Ghada Alsaleh
- Botnar Institute for Musculoskeletal Sciences, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences (NDORMS), University of Oxford, Oxford, United Kingdom.,The Kennedy Institute of Rheumatology, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences (NDORMS), University of Oxford, Oxford, United Kingdom
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37
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Odell ID, Steach H, Gauld SB, Reinke-Breen L, Karman J, Carr TL, Wetter JB, Phillips L, Hinchcliff M, Flavell RA. Epiregulin is a dendritic cell-derived EGFR ligand that maintains skin and lung fibrosis. Sci Immunol 2022; 7:eabq6691. [PMID: 36490328 PMCID: PMC9840167 DOI: 10.1126/sciimmunol.abq6691] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Immune cells are fundamental regulators of extracellular matrix (ECM) production by fibroblasts and have important roles in determining extent of fibrosis in response to inflammation. Although much is known about fibroblast signaling in fibrosis, the molecular signals between immune cells and fibroblasts that drive its persistence are poorly understood. We therefore analyzed skin and lung samples of patients with diffuse cutaneous systemic sclerosis, an autoimmune disease that causes debilitating fibrosis of the skin and internal organs. Here, we define a critical role of epiregulin-EGFR signaling between dendritic cells and fibroblasts to maintain elevated ECM production and accumulation in fibrotic tissue. We found that epiregulin expression marks an inducible state of DC3 dendritic cells triggered by type I interferon and that DC3-derived epiregulin activates EGFR on fibroblasts, driving a positive feedback loop through NOTCH signaling. In mouse models of skin and lung fibrosis, epiregulin was essential for persistence of fibrosis in both tissues, which could be abrogated by epiregulin genetic deficiency or a neutralizing antibody. Therapeutic administration of epiregulin antibody reversed fibrosis in patient skin and lung explants, identifying it as a previously unexplored biologic drug target. Our findings reveal epiregulin as a crucial immune signal that maintains skin and lung fibrosis in multiple diseases and represents a promising antifibrotic target.
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Affiliation(s)
- Ian D. Odell
- Department of Dermatology, Yale University School of Medicine, New Haven, CT, USA
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT, USA
| | - Holly Steach
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT, USA
| | | | | | | | | | | | | | - Monique Hinchcliff
- Department of Internal Medicine, Section of Rheumatology, Allergy & Immunology, Yale School of Medicine, New Haven, CT, USA
| | - Richard A. Flavell
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT, USA
- Howard Hughes Medical Institute, Chevy Chase, MD, USA
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38
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The transcriptional profile of keloidal Schwann cells. Exp Mol Med 2022; 54:1886-1900. [PMID: 36333467 PMCID: PMC9722693 DOI: 10.1038/s12276-022-00874-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 07/07/2022] [Accepted: 08/08/2022] [Indexed: 11/06/2022] Open
Abstract
Recently, a specific Schwann cell type with profibrotic and tissue regenerative properties that contributes to keloid formation has been identified. In the present study, we reanalyzed published single-cell RNA sequencing (scRNA-seq) studies of keloids, healthy skin, and normal scars to reliably determine the specific gene expression profile of keloid-specific Schwann cell types in more detail. We were able to confirm the presence of the repair-like, profibrotic Schwann cell type in the datasets of all three studies and identified a specific gene-set for these Schwann cells. In contrast to keloids, in normal scars, the number of Schwann cells was not increased, nor was their gene expression profile distinctly different from that of Schwann cells of normal skin. In addition, our bioinformatics analysis provided evidence for a role of transcription factors of the AP1, STAT, and KLF families, and members of the IER genes in the dedifferentiation process of keloidal Schwann cells. Together, our analysis strengthens the role of the profibrotic Schwann cell type in the formation of keloids. Knowledge of the exact gene expression profile of these Schwann cells will facilitate their identification in other organs and diseases.
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Riedl JA, Riddle M, Xia L, Eide C, Boull C, Ebens CL, Tolar J. Interrogation of RDEB Epidermal Allografts after BMT Reveals Coexpression of Collagen VII and Keratin 15 with Proinflammatory Immune Cells and Fibroblasts. J Invest Dermatol 2022; 142:2424-2434. [PMID: 35304249 PMCID: PMC9391265 DOI: 10.1016/j.jid.2022.01.034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 01/18/2022] [Accepted: 01/29/2022] [Indexed: 11/16/2022]
Abstract
Recessive dystrophic epidermolysis bullosa (RDEB) is a devastating genodermatosis characterized by dysfunctional collagen VII protein resulting in epithelial blistering of the skin, mucosa, and gastrointestinal tract. There is no cure for RDEB, but improvement of clinical phenotype has been achieved with bone marrow transplantation and subsequent epidermal allografting from the bone marrow transplant donor. Epidermal allografting of these patients has decreased wound surface area for up to 3 years after treatment. This study aimed to determine the phenotype of the epidermal allograft cells responsible for durable persistence of wound healing and skin integrity. We found that epidermal allografts provide basal keratinocytes coexpressing collagen VII and basal stem cell marker keratin 15. Characterization of RDEB full-thickness skin biopsies with single-cell RNA sequencing uncovered proinflammatory immune and fibroblast phenotypes potentially driven by the local environment of RDEB skin. This is further highlighted by the presence of a myofibroblast population, which has not been described in healthy control human skin. Finally, we found inflammatory fibroblasts expressing profibrotic gene POSTN, which may have implications in the development of squamous cell carcinoma, a common, lethal complication of RDEB that lacks curative treatment. In conclusion, this study provides insights into and targets for future RDEB studies and treatments.
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Affiliation(s)
- Julia A Riedl
- Medical Scientist Training Program (MD/PhD), Medical School, University of Minnesota, Minneapolis, Minnesota, USA; Division of Pediatric Blood and Marrow Transplantation & Cellular Therapy, Department of Pediatrics, Medical School, University of Minnesota, Minneapolis, Minnesota, USA; Stem Cell Institute, Medical School, University of Minnesota, Minneapolis, Minnesota, USA
| | - Megan Riddle
- Division of Pediatric Blood and Marrow Transplantation & Cellular Therapy, Department of Pediatrics, Medical School, University of Minnesota, Minneapolis, Minnesota, USA
| | - Lily Xia
- Division of Pediatric Blood and Marrow Transplantation & Cellular Therapy, Department of Pediatrics, Medical School, University of Minnesota, Minneapolis, Minnesota, USA
| | - Cindy Eide
- Division of Pediatric Blood and Marrow Transplantation & Cellular Therapy, Department of Pediatrics, Medical School, University of Minnesota, Minneapolis, Minnesota, USA
| | - Christina Boull
- Division of Pediatric Dermatology, Department of Dermatology, Medical School, University of Minnesota, Minneapolis, Minnesota, USA
| | - Christen L Ebens
- Division of Pediatric Blood and Marrow Transplantation & Cellular Therapy, Department of Pediatrics, Medical School, University of Minnesota, Minneapolis, Minnesota, USA.
| | - Jakub Tolar
- Division of Pediatric Blood and Marrow Transplantation & Cellular Therapy, Department of Pediatrics, Medical School, University of Minnesota, Minneapolis, Minnesota, USA; Stem Cell Institute, Medical School, University of Minnesota, Minneapolis, Minnesota, USA
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40
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Negri VA, Watt FM. Understanding Human Epidermal Stem Cells at Single-Cell Resolution. J Invest Dermatol 2022; 142:2061-2067. [PMID: 35570025 PMCID: PMC9826868 DOI: 10.1016/j.jid.2022.04.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Revised: 03/20/2022] [Accepted: 04/01/2022] [Indexed: 01/13/2023]
Abstract
The human epidermis is one of the first tissues in which the existence of stem cells was recognized and is one of the few in which ex vivo expansion for tissue repair is established clinically. Nevertheless, the nature of stem cells has been elusive. Using clonal growth assays of cultured keratinocytes as a quantitative measure of their abundance, several candidate stem cell markers have been described. Recently, the volume and quality of single-cell RNA-sequencing datasets have increased exponentially, providing new opportunities to explore the nature of epidermal stem cells and test the validity of in vitro experimental models.
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Affiliation(s)
- Victor Augusti Negri
- Centre for Gene Therapy and Regenerative Medicine, Faculty of Life Sciences & Medicine, School of Basic & Medical Biosciences, King’s College London, London, United Kingdom
| | - Fiona M. Watt
- Centre for Gene Therapy and Regenerative Medicine, Faculty of Life Sciences & Medicine, School of Basic & Medical Biosciences, King’s College London, London, United Kingdom,Directors' Research Unit, European Molecular Biology Laboratory, Heidelberg, Germany,Correspondence: Fiona M. Watt, Centre for Gene Therapy and Regenerative Medicine, King’s College London, Floor 28, Tower Wing, Guy’s Hospital, Great Maze Pond, London SE1 9RT, United Kingdom.
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41
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Liu B, Li A, Xu J, Cui Y. Single-Cell Transcriptional Analysis Deciphers the Inflammatory Response of Skin-Resident Stromal Cells. Front Surg 2022; 9:935107. [PMID: 35774389 PMCID: PMC9237500 DOI: 10.3389/fsurg.2022.935107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Accepted: 05/23/2022] [Indexed: 11/24/2022] Open
Abstract
The skin is the outermost barrier of the body. It has developed a sophisticated system against the ever-changing environment. The application of single-cell technologies has revolutionized dermatology research and unraveled the changes and interactions across skin resident cells in the healthy and inflamed skin. Single-cell technologies have revealed the critical roles of stromal cells in an inflammatory response and explained a series of plausible previous findings concerning skin immunity. Here, we summarized the functional diversity of skin stromal cells defined by single-cell analyses and how these cells orchestrated events leading to inflammatory diseases, including atopic dermatitis, psoriasis, vitiligo, and systemic lupus erythematosus.
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Affiliation(s)
- Baoyi Liu
- Department of Dermatology, China–Japan Friendship Hospital, Beijing, China
- Graduate School of Peking Union Medical College, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Ang Li
- Department of Dermatology, China–Japan Friendship Hospital, Beijing, China
- Graduate School of Peking Union Medical College, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jingkai Xu
- Department of Dermatology, China–Japan Friendship Hospital, Beijing, China
| | - Yong Cui
- Department of Dermatology, China–Japan Friendship Hospital, Beijing, China
- Graduate School of Peking Union Medical College, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- Correspondence: Yong Cui
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42
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Lendahl U, Muhl L, Betsholtz C. Identification, discrimination and heterogeneity of fibroblasts. Nat Commun 2022; 13:3409. [PMID: 35701396 PMCID: PMC9192344 DOI: 10.1038/s41467-022-30633-9] [Citation(s) in RCA: 65] [Impact Index Per Article: 32.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Accepted: 05/04/2022] [Indexed: 12/14/2022] Open
Abstract
Fibroblasts, the principal cell type of connective tissue, secrete extracellular matrix components during tissue development, homeostasis, repair and disease. Despite this crucial role, the identification and distinction of fibroblasts from other cell types are challenging and laden with caveats. Rapid progress in single-cell transcriptomics now yields detailed molecular portraits of fibroblasts and other cell types in our bodies, which complement and enrich classical histological and immunological descriptions, improve cell class definitions and guide further studies on the functional heterogeneity of cell subtypes and states, origins and fates in physiological and pathological processes. In this review, we summarize and discuss recent advances in the understanding of fibroblast identification and heterogeneity and how they discriminate from other cell types. In this review, the authors look at how recent progress in single-cell transcriptomics complement and enrich the classical, largely morphological, portraits of fibroblasts. The detailed molecular information now available provides new insights into fibroblast identity, heterogeneity and function.
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Affiliation(s)
- Urban Lendahl
- Department of Cell and Molecular Biology, Karolinska Institutet, SE-171 77, Stockholm, Sweden.,Department of Neurobiology, Care sciences and Society, Karolinska Institutet, SE-14183, Huddinge, Sweden
| | - Lars Muhl
- Department of Medicine, Huddinge, Karolinska Institutet, Blickagången 16, SE-141 57, Huddinge, Sweden
| | - Christer Betsholtz
- Department of Medicine, Huddinge, Karolinska Institutet, Blickagången 16, SE-141 57, Huddinge, Sweden. .,Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Dag Hammarskjölds väg 20, SE-751 85, Uppsala, Sweden.
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43
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Ganier C, Rognoni E, Goss G, Lynch M, Watt FM. Fibroblast Heterogeneity in Healthy and Wounded Skin. Cold Spring Harb Perspect Biol 2022; 14:a041238. [PMID: 35667795 PMCID: PMC9248828 DOI: 10.1101/cshperspect.a041238] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Fibroblasts are the main cell type in the dermis. They are responsible for the synthesis and deposition of structural proteins such as collagen and elastin, which are integrated into the extracellular matrix (ECM). Mouse and human studies using flow cytometry, cell culture, skin reconstitution, and lineage tracing experiments have shown the existence of different subpopulations of fibroblasts, including papillary fibroblasts, reticular fibroblasts, and fibroblasts comprising the dermal papilla at the base of the hair follicle. In recent years, the technological advances in single-cell sequencing have allowed researchers to study the repertoire of cells present in full-thickness skin including the dermis. Multiple groups have confirmed that distinct fibroblast populations can be identified in mouse and human dermis on the basis of differences in the transcriptional profile. Here, we discuss the current state of knowledge regarding dermal fibroblast heterogeneity in healthy mouse and human skin, highlighting the similarities and differences between mouse and human fibroblast subpopulations. We also discuss how fibroblast heterogeneity may provide insights into physiological wound healing and its dysfunction in pathological states such as hypertrophic and keloid scars.
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Affiliation(s)
- Clarisse Ganier
- Centre for Stem Cells and Regenerative Medicine, King's College London, Guy's Hospital, London SE1 9RT, United Kingdom
| | - Emanuel Rognoni
- Centre for Endocrinology, William Harvey Research Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London EC1M 6BQ, United Kingdom
| | - Georgina Goss
- Centre for Stem Cells and Regenerative Medicine, King's College London, Guy's Hospital, London SE1 9RT, United Kingdom
| | - Magnus Lynch
- Centre for Stem Cells and Regenerative Medicine, King's College London, Guy's Hospital, London SE1 9RT, United Kingdom
- St John's Institute of Dermatology, King's College London, London SE1 9RT, United Kingdom
| | - Fiona M Watt
- Centre for Stem Cells and Regenerative Medicine, King's College London, Guy's Hospital, London SE1 9RT, United Kingdom
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44
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Chen K, Henn D, Januszyk M, Barrera JA, Noishiki C, Bonham CA, Griffin M, Tevlin R, Carlomagno T, Shannon T, Fehlmann T, Trotsyuk AA, Padmanabhan J, Sivaraj D, Perrault DP, Zamaleeva AI, Mays CJ, Greco AH, Kwon SH, Leeolou MC, Huskins SL, Steele SR, Fischer KS, Kussie HC, Mittal S, Mermin-Bunnell AM, Diaz Deleon NM, Lavin C, Keller A, Longaker MT, Gurtner GC. Disrupting mechanotransduction decreases fibrosis and contracture in split-thickness skin grafting. Sci Transl Med 2022; 14:eabj9152. [PMID: 35584231 DOI: 10.1126/scitranslmed.abj9152] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Burns and other traumatic injuries represent a substantial biomedical burden. The current standard of care for deep injuries is autologous split-thickness skin grafting (STSG), which frequently results in contractures, abnormal pigmentation, and loss of biomechanical function. Currently, there are no effective therapies that can prevent fibrosis and contracture after STSG. Here, we have developed a clinically relevant porcine model of STSG and comprehensively characterized porcine cell populations involved in healing with single-cell resolution. We identified an up-regulation of proinflammatory and mechanotransduction signaling pathways in standard STSGs. Blocking mechanotransduction with a small-molecule focal adhesion kinase (FAK) inhibitor promoted healing, reduced contracture, mitigated scar formation, restored collagen architecture, and ultimately improved graft biomechanical properties. Acute mechanotransduction blockade up-regulated myeloid CXCL10-mediated anti-inflammation with decreased CXCL14-mediated myeloid and fibroblast recruitment. At later time points, mechanical signaling shifted fibroblasts toward profibrotic differentiation fates, and disruption of mechanotransduction modulated mesenchymal fibroblast differentiation states to block those responses, instead driving fibroblasts toward proregenerative, adipogenic states similar to unwounded skin. We then confirmed these two diverging fibroblast transcriptional trajectories in human skin, human scar, and a three-dimensional organotypic model of human skin. Together, pharmacological blockade of mechanotransduction markedly improved large animal healing after STSG by promoting both early, anti-inflammatory and late, regenerative transcriptional programs, resulting in healed tissue similar to unwounded skin. FAK inhibition could therefore supplement the current standard of care for traumatic and burn injuries.
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Affiliation(s)
- Kellen Chen
- Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA.,Department of Surgery, University of Arizona College of Medicine, Tucson, AZ 85724, USA
| | - Dominic Henn
- Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Michael Januszyk
- Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Janos A Barrera
- Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Chikage Noishiki
- Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Clark A Bonham
- Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Michelle Griffin
- Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Ruth Tevlin
- Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Theresa Carlomagno
- Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Tara Shannon
- Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Tobias Fehlmann
- Chair for Clinical Bioinformatics, Saarland University, 66123 Saarbrücken, Germany
| | - Artem A Trotsyuk
- Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Jagannath Padmanabhan
- Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Dharshan Sivaraj
- Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - David P Perrault
- Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Alsu I Zamaleeva
- Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Chyna J Mays
- Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Autumn H Greco
- Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Sun Hyung Kwon
- Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Melissa C Leeolou
- Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Savana L Huskins
- Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Sydney R Steele
- Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Katharina S Fischer
- Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Hudson C Kussie
- Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Smiti Mittal
- Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Alana M Mermin-Bunnell
- Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Nestor M Diaz Deleon
- Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Christopher Lavin
- Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Andreas Keller
- Chair for Clinical Bioinformatics, Saarland University, 66123 Saarbrücken, Germany.,Department of Neurology and Neurological Sciences, Stanford University, Stanford, CA 94305, USA
| | - Michael T Longaker
- Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Geoffrey C Gurtner
- Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA.,Department of Surgery, University of Arizona College of Medicine, Tucson, AZ 85724, USA
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45
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Burja B, Paul D, Tastanova A, Edalat SG, Gerber R, Houtman M, Elhai M, Bürki K, Staeger R, Restivo G, Lang R, Sodin-Semrl S, Lakota K, Tomšič M, Levesque MP, Distler O, Rotar Ž, Robinson MD, Frank-Bertoncelj M. An Optimized Tissue Dissociation Protocol for Single-Cell RNA Sequencing Analysis of Fresh and Cultured Human Skin Biopsies. Front Cell Dev Biol 2022; 10:872688. [PMID: 35573685 PMCID: PMC9096112 DOI: 10.3389/fcell.2022.872688] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Accepted: 04/13/2022] [Indexed: 12/16/2022] Open
Abstract
We present an optimized dissociation protocol for preparing high-quality skin cell suspensions for in-depth single-cell RNA-sequencing (scRNA-seq) analysis of fresh and cultured human skin. Our protocol enabled the isolation of a consistently high number of highly viable skin cells from small freshly dissociated punch skin biopsies, which we use for scRNA-seq studies. We recapitulated not only the main cell populations of existing single-cell skin atlases, but also identified rare cell populations, such as mast cells. Furthermore, we effectively isolated highly viable single cells from ex vivo cultured skin biopsy fragments and generated a global single-cell map of the explanted human skin. The quality metrics of the generated scRNA-seq datasets were comparable between freshly dissociated and cultured skin. Overall, by enabling efficient cell isolation and comprehensive cell mapping, our skin dissociation-scRNA-seq workflow can greatly facilitate scRNA-seq discoveries across diverse human skin pathologies and ex vivo skin explant experimentations.
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Affiliation(s)
- Blaž Burja
- Center of Experimental Rheumatology, Department of Rheumatology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
- Department of Rheumatology, University Medical Centre Ljubljana, Ljubljana, Slovenia
- Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Dominique Paul
- Department of Molecular Life Sciences and Swiss Institute of Bioinformatics, University of Zurich, Zurich, Switzerland
| | - Aizhan Tastanova
- Department of Dermatology, University of Zurich, University Hospital Zurich, Schlieren, Switzerland
| | - Sam G. Edalat
- Center of Experimental Rheumatology, Department of Rheumatology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Reto Gerber
- Center of Experimental Rheumatology, Department of Rheumatology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
- Department of Molecular Life Sciences and Swiss Institute of Bioinformatics, University of Zurich, Zurich, Switzerland
| | - Miranda Houtman
- Center of Experimental Rheumatology, Department of Rheumatology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Muriel Elhai
- Center of Experimental Rheumatology, Department of Rheumatology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Kristina Bürki
- Center of Experimental Rheumatology, Department of Rheumatology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Ramon Staeger
- Department of Dermatology, University of Zurich, University Hospital Zurich, Schlieren, Switzerland
| | - Gaetana Restivo
- Department of Dermatology, University of Zurich, University Hospital Zurich, Schlieren, Switzerland
| | - Ramon Lang
- Department of Dermatology, University of Zurich, University Hospital Zurich, Schlieren, Switzerland
| | - Snezna Sodin-Semrl
- Department of Rheumatology, University Medical Centre Ljubljana, Ljubljana, Slovenia
| | - Katja Lakota
- Department of Rheumatology, University Medical Centre Ljubljana, Ljubljana, Slovenia
| | - Matija Tomšič
- Department of Rheumatology, University Medical Centre Ljubljana, Ljubljana, Slovenia
- Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Mitchell P. Levesque
- Department of Dermatology, University of Zurich, University Hospital Zurich, Schlieren, Switzerland
| | - Oliver Distler
- Center of Experimental Rheumatology, Department of Rheumatology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Žiga Rotar
- Department of Rheumatology, University Medical Centre Ljubljana, Ljubljana, Slovenia
- Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Mark D. Robinson
- Department of Molecular Life Sciences and Swiss Institute of Bioinformatics, University of Zurich, Zurich, Switzerland
| | - Mojca Frank-Bertoncelj
- Center of Experimental Rheumatology, Department of Rheumatology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
- BioMed X Institute, Heidelberg, Germany
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46
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Capolupo L, Khven I, Lederer AR, Mazzeo L, Glousker G, Ho S, Russo F, Montoya JP, Bhandari DR, Bowman AP, Ellis SR, Guiet R, Burri O, Detzner J, Muthing J, Homicsko K, Kuonen F, Gilliet M, Spengler B, Heeren RMA, Dotto GP, La Manno G, D'Angelo G. Sphingolipids control dermal fibroblast heterogeneity. Science 2022; 376:eabh1623. [PMID: 35420948 DOI: 10.1126/science.abh1623] [Citation(s) in RCA: 70] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Human cells produce thousands of lipids that change during cell differentiation and can vary across individual cells of the same type. However, we are only starting to characterize the function of these cell-to-cell differences in lipid composition. Here, we measured the lipidomes and transcriptomes of individual human dermal fibroblasts by coupling high-resolution mass spectrometry imaging with single-cell transcriptomics. We found that the cell-to-cell variations of specific lipid metabolic pathways contribute to the establishment of cell states involved in the organization of skin architecture. Sphingolipid composition is shown to define fibroblast subpopulations, with sphingolipid metabolic rewiring driving cell-state transitions. Therefore, cell-to-cell lipid heterogeneity affects the determination of cell states, adding a new regulatory component to the self-organization of multicellular systems.
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Affiliation(s)
- Laura Capolupo
- Interfaculty Institute of Bioengineering and Global Health Institute, École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - Irina Khven
- Brain Mind Institute, Faculty of Life Sciences, École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - Alex R Lederer
- Brain Mind Institute, Faculty of Life Sciences, École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - Luigi Mazzeo
- Department of Biochemistry, University of Lausanne, CH-1066 Epalinges, Switzerland
| | - Galina Glousker
- School of Life Sciences, Swiss Institute for Experimental Cancer Research, École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - Sylvia Ho
- Interfaculty Institute of Bioengineering and Global Health Institute, École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - Francesco Russo
- Institute of Biochemistry and Cellular Biology, National Research Council of Italy, 80131 Napoli, Italy
| | - Jonathan Paz Montoya
- Interfaculty Institute of Bioengineering and Global Health Institute, École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - Dhaka R Bhandari
- Institute for Inorganic and Analytical Chemistry, Justus Liebig University Giessen, 35392 Giessen, Germany
| | - Andrew P Bowman
- Maastricht MultiModal Molecular Imaging Institute, Division of Imaging Mass Spectrometry, Maastricht University, 6629 ER Maastricht, Netherlands
| | - Shane R Ellis
- Maastricht MultiModal Molecular Imaging Institute, Division of Imaging Mass Spectrometry, Maastricht University, 6629 ER Maastricht, Netherlands.,Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, New South Wales 2522, Australia.,Illawarra Health and Medical Research Institute, Wollongong, New South Wales 2522, Australia
| | - Romain Guiet
- Faculté des Sciences de la Vie, Bioimaging and Optics Platform, École Polytechnique Fédérale de Lausanne, Lausanne, CH-1015 Vaud, Switzerland
| | - Olivier Burri
- Faculté des Sciences de la Vie, Bioimaging and Optics Platform, École Polytechnique Fédérale de Lausanne, Lausanne, CH-1015 Vaud, Switzerland
| | - Johanna Detzner
- Institute of Hygiene, University of Münster, D-48149 Münster, Germany
| | - Johannes Muthing
- Institute of Hygiene, University of Münster, D-48149 Münster, Germany
| | - Krisztian Homicsko
- Department of Oncology, Centre Hospitalier Universitaire Vaudois, CH-1011 Lausanne, Switzerland.,Swiss Cancer Center Leman, CH-1015 Lausanne, Switzerland.,The Ludwig Institute for Cancer Research, Lausanne Branch, CH-1066 Epalinges, Switzerland
| | - François Kuonen
- Département de Dermatologie et Vénéréologie, Centre Hospitalier Universitaire Vaudois, CH-1011 Lausanne, Switzerland
| | - Michel Gilliet
- Département de Dermatologie et Vénéréologie, Centre Hospitalier Universitaire Vaudois, CH-1011 Lausanne, Switzerland
| | - Bernhard Spengler
- Institute for Inorganic and Analytical Chemistry, Justus Liebig University Giessen, 35392 Giessen, Germany
| | - Ron M A Heeren
- Maastricht MultiModal Molecular Imaging Institute, Division of Imaging Mass Spectrometry, Maastricht University, 6629 ER Maastricht, Netherlands
| | - G Paolo Dotto
- Personalized Cancer Prevention Research Unit, Head and Neck Surgery Division, Centre Hospitalier Universitaire Vaudois, CH-1011 Lausanne, Switzerland.,Department of Biochemistry, University of Lausanne, CH-1066 Epalinges, Switzerland.,Cutaneous Biology Research Center, Massachusetts General Hospital, Charlestown, MA 02129, USA
| | - Gioele La Manno
- Brain Mind Institute, Faculty of Life Sciences, École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - Giovanni D'Angelo
- Interfaculty Institute of Bioengineering and Global Health Institute, École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland.,Institute of Biochemistry and Cellular Biology, National Research Council of Italy, 80131 Napoli, Italy
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47
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Gur C, Wang SY, Sheban F, Zada M, Li B, Kharouf F, Peleg H, Aamar S, Yalin A, Kirschenbaum D, Braun-Moscovici Y, Jaitin DA, Meir-Salame T, Hagai E, Kragesteen BK, Avni B, Grisariu S, Bornstein C, Shlomi-Loubaton S, David E, Shreberk-Hassidim R, Molho-Pessach V, Amar D, Tzur T, Kuint R, Gross M, Barboy O, Moshe A, Fellus-Alyagor L, Hirsch D, Addadi Y, Erenfeld S, Biton M, Tzemach T, Elazary A, Naparstek Y, Tzemach R, Weiner A, Giladi A, Balbir-Gurman A, Amit I. LGR5 expressing skin fibroblasts define a major cellular hub perturbed in scleroderma. Cell 2022; 185:1373-1388.e20. [PMID: 35381199 PMCID: PMC7612792 DOI: 10.1016/j.cell.2022.03.011] [Citation(s) in RCA: 58] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 12/26/2021] [Accepted: 03/09/2022] [Indexed: 11/28/2022]
Abstract
Systemic sclerosis (scleroderma, SSc) is an incurable autoimmune disease with high morbidity and mortality rates. Here, we conducted a population-scale single-cell genomic analysis of skin and blood samples of 56 healthy controls and 97 SSc patients at different stages of the disease. We found immune compartment dysfunction only in a specific subtype of diffuse SSc patients but global dysregulation of the stromal compartment, particularly in a previously undefined subset of LGR5+-scleroderma-associated fibroblasts (ScAFs). ScAFs are perturbed morphologically and molecularly in SSc patients. Single-cell multiome profiling of stromal cells revealed ScAF-specific markers, pathways, regulatory elements, and transcription factors underlining disease development. Systematic analysis of these molecular features with clinical metadata associates specific ScAF targets with disease pathogenesis and SSc clinical traits. Our high-resolution atlas of the sclerodermatous skin spectrum will enable a paradigm shift in the understanding of SSc disease and facilitate the development of biomarkers and therapeutic strategies.
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Affiliation(s)
- Chamutal Gur
- Department of Systems Immunology, Weizmann Institute, Rehovot, Israel; Rheumatology Department, Hadassah Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Shuang-Yin Wang
- Department of Systems Immunology, Weizmann Institute, Rehovot, Israel.
| | - Fadi Sheban
- Department of Systems Immunology, Weizmann Institute, Rehovot, Israel
| | - Mor Zada
- Department of Systems Immunology, Weizmann Institute, Rehovot, Israel
| | - Baoguo Li
- Department of Systems Immunology, Weizmann Institute, Rehovot, Israel
| | - Fadi Kharouf
- Rheumatology Department, Hadassah Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Hagit Peleg
- Rheumatology Department, Hadassah Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Suhail Aamar
- Rheumatology Department, Hadassah Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Adam Yalin
- Department of Systems Immunology, Weizmann Institute, Rehovot, Israel
| | | | - Yolanda Braun-Moscovici
- Rheumatology Institute, Rambam Health Care Campus, Rappaport Faculty of Medicine, Technion-Israeli Institute of Technology, Haifa, Israel
| | | | - Tomer Meir-Salame
- Flow Cytometry Unit, Department of Biological Services, Weizmann Institute, Rehovot, Israel
| | - Efrat Hagai
- Flow Cytometry Unit, Department of Biological Services, Weizmann Institute, Rehovot, Israel
| | | | - Batia Avni
- Department of Bone Marrow Transplantation, Hadassah Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Sigal Grisariu
- Department of Bone Marrow Transplantation, Hadassah Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | | | | | - Eyal David
- Department of Systems Immunology, Weizmann Institute, Rehovot, Israel
| | - Rony Shreberk-Hassidim
- Dermatology Department, Hadassah Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Vered Molho-Pessach
- Dermatology Department, Hadassah Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Dalit Amar
- Plastic Surgery Department, Hadassah Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Tomer Tzur
- Plastic Surgery Department, Hadassah Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Rottem Kuint
- Institue of Pulmonology Medicine, Hadassah Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Moshe Gross
- Orthopedic Department, Hadassah Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Oren Barboy
- Department of Systems Immunology, Weizmann Institute, Rehovot, Israel
| | - Adi Moshe
- Department of Systems Immunology, Weizmann Institute, Rehovot, Israel
| | | | - Dana Hirsch
- The Department of Veterinary Resources, Weizmann Institute, Rehovot, Israel
| | - Yoseph Addadi
- Life Sciences Core Facilities, Weizmann Institute, Rehovot, Israel
| | - Shlomit Erenfeld
- Department of Bone Marrow Transplantation, Hadassah Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Moshe Biton
- Department of Biological Regulation, Weizmann Institute, Rehovot, Israel
| | - Tehila Tzemach
- Rheumatology Department, Hadassah Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Anat Elazary
- Rheumatology Department, Hadassah Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Yaakov Naparstek
- Rheumatology Department, Hadassah Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Reut Tzemach
- Department of Systems Immunology, Weizmann Institute, Rehovot, Israel; Rheumatology Institute at the Tel Aviv Sourasky Medical Center, Tel Aviv-Yafo, Israel
| | - Assaf Weiner
- Department of Systems Immunology, Weizmann Institute, Rehovot, Israel
| | - Amir Giladi
- Department of Systems Immunology, Weizmann Institute, Rehovot, Israel
| | - Alexandra Balbir-Gurman
- Rheumatology Institute, Rambam Health Care Campus, Rappaport Faculty of Medicine, Technion-Israeli Institute of Technology, Haifa, Israel
| | - Ido Amit
- Department of Systems Immunology, Weizmann Institute, Rehovot, Israel.
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48
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Zhou X, Ding S, Wang D, Chen L, Feng K, Huang T, Li Z, Cai Y. Identification of Cell Markers and Their Expression Patterns in Skin Based on Single-Cell RNA-Sequencing Profiles. Life (Basel) 2022; 12:life12040550. [PMID: 35455041 PMCID: PMC9025372 DOI: 10.3390/life12040550] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 03/27/2022] [Accepted: 04/04/2022] [Indexed: 12/19/2022] Open
Abstract
Atopic dermatitis and psoriasis are members of a family of inflammatory skin disorders. Cellular immune responses in skin tissues contribute to the development of these diseases. However, their underlying immune mechanisms remain to be fully elucidated. We developed a computational pipeline for analyzing the single-cell RNA-sequencing profiles of the Human Cell Atlas skin dataset to investigate the pathological mechanisms of skin diseases. First, we applied the maximum relevance criterion and the Boruta feature selection method to exclude irrelevant gene features from the single-cell gene expression profiles of inflammatory skin disease samples and healthy controls. The retained gene features were ranked by using the Monte Carlo feature selection method on the basis of their importance, and a feature list was compiled. This list was then introduced into the incremental feature selection method that combined the decision tree and random forest algorithms to extract important cell markers and thus build excellent classifiers and decision rules. These cell markers and their expression patterns have been analyzed and validated in recent studies and are potential therapeutic and diagnostic targets for skin diseases because their expression affects the pathogenesis of inflammatory skin diseases.
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Affiliation(s)
- Xianchao Zhou
- School of Life Sciences, Shanghai University, Shanghai 200444, China; (X.Z.); (S.D.)
- Center for Single-Cell Omics, School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Shijian Ding
- School of Life Sciences, Shanghai University, Shanghai 200444, China; (X.Z.); (S.D.)
| | - Deling Wang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Department of Medical Imaging, Sun Yat-sen University Cancer Center, Guangzhou 510060, China;
| | - Lei Chen
- College of Information Engineering, Shanghai Maritime University, Shanghai 201306, China;
| | - Kaiyan Feng
- Department of Computer Science, Guangdong AIB Polytechnic College, Guangzhou 510507, China;
| | - Tao Huang
- Bio-Med Big Data Center, CAS Key Laboratory of Computational Biology, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200031, China
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200031, China
- Correspondence: (T.H.); (Z.L.); (Y.C.); Tel.: +86-21-54923269 (T.H.); +86-21-66136132 (Y.C.)
| | - Zhandong Li
- College of Food Engineering, Jilin Engineering Normal University, Changchun 130052, China
- Correspondence: (T.H.); (Z.L.); (Y.C.); Tel.: +86-21-54923269 (T.H.); +86-21-66136132 (Y.C.)
| | - Yudong Cai
- School of Life Sciences, Shanghai University, Shanghai 200444, China; (X.Z.); (S.D.)
- Correspondence: (T.H.); (Z.L.); (Y.C.); Tel.: +86-21-54923269 (T.H.); +86-21-66136132 (Y.C.)
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49
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Blaschuk OW. Potential Therapeutic Applications of N-Cadherin Antagonists and Agonists. Front Cell Dev Biol 2022; 10:866200. [PMID: 35309924 PMCID: PMC8927039 DOI: 10.3389/fcell.2022.866200] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 02/21/2022] [Indexed: 12/31/2022] Open
Abstract
This review focuses on the cell adhesion molecule (CAM), known as neural (N)-cadherin (CDH2). The molecular basis of N-cadherin-mediated intercellular adhesion is discussed, as well as the intracellular signaling pathways regulated by this CAM. N-cadherin antagonists and agonists are then described, and several potential therapeutic applications of these intercellular adhesion modulators are considered. The usefulness of N-cadherin antagonists in treating fibrotic diseases and cancer, as well as manipulating vascular function are emphasized. Biomaterials incorporating N-cadherin modulators for tissue regeneration are also presented. N-cadherin antagonists and agonists have potential for broad utility in the treatment of numerous maladies.
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50
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Theocharidis G, Thomas BE, Sarkar D, Mumme HL, Pilcher WJR, Dwivedi B, Sandoval-Schaefer T, Sîrbulescu RF, Kafanas A, Mezghani I, Wang P, Lobao A, Vlachos IS, Dash B, Hsia HC, Horsley V, Bhasin SS, Veves A, Bhasin M. Single cell transcriptomic landscape of diabetic foot ulcers. Nat Commun 2022; 13:181. [PMID: 35013299 PMCID: PMC8748704 DOI: 10.1038/s41467-021-27801-8] [Citation(s) in RCA: 108] [Impact Index Per Article: 54.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Accepted: 11/29/2021] [Indexed: 12/11/2022] Open
Abstract
Diabetic foot ulceration (DFU) is a devastating complication of diabetes whose pathogenesis remains incompletely understood. Here, we profile 174,962 single cells from the foot, forearm, and peripheral blood mononuclear cells using single-cell RNA sequencing. Our analysis shows enrichment of a unique population of fibroblasts overexpressing MMP1, MMP3, MMP11, HIF1A, CHI3L1, and TNFAIP6 and increased M1 macrophage polarization in the DFU patients with healing wounds. Further, analysis of spatially separated samples from the same patient and spatial transcriptomics reveal preferential localization of these healing associated fibroblasts toward the wound bed as compared to the wound edge or unwounded skin. Spatial transcriptomics also validates our findings of higher abundance of M1 macrophages in healers and M2 macrophages in non-healers. Our analysis provides deep insights into the wound healing microenvironment, identifying cell types that could be critical in promoting DFU healing, and may inform novel therapeutic approaches for DFU treatment.
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Affiliation(s)
- Georgios Theocharidis
- The Rongxiang Xu, MD, Center for Regenerative Therapeutics and Joslin-Beth Israel Deaconess Foot Center, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, USA
| | - Beena E Thomas
- Aflac Cancer and Blood Disorders Center, Children Healthcare of Atlanta, Department of Pediatrics and Biomedical Informatics, Emory University, Atlanta, GA, USA
| | - Debasree Sarkar
- Aflac Cancer and Blood Disorders Center, Children Healthcare of Atlanta, Department of Pediatrics and Biomedical Informatics, Emory University, Atlanta, GA, USA
| | - Hope L Mumme
- Aflac Cancer and Blood Disorders Center, Children Healthcare of Atlanta, Department of Pediatrics and Biomedical Informatics, Emory University, Atlanta, GA, USA
| | - William J R Pilcher
- Aflac Cancer and Blood Disorders Center, Children Healthcare of Atlanta, Department of Pediatrics and Biomedical Informatics, Emory University, Atlanta, GA, USA
| | - Bhakti Dwivedi
- Winship Cancer Institute, Emory University, Atlanta, GA, USA
| | | | - Ruxandra F Sîrbulescu
- Vaccine and Immunotherapy Center, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Antonios Kafanas
- Lincoln County Hospital, Northern Lincolnshire and Goole NHS Foundation Trust, Scunthorpe, UK
| | - Ikram Mezghani
- The Rongxiang Xu, MD, Center for Regenerative Therapeutics and Joslin-Beth Israel Deaconess Foot Center, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, USA
| | - Peng Wang
- The Rongxiang Xu, MD, Center for Regenerative Therapeutics and Joslin-Beth Israel Deaconess Foot Center, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, USA
| | - Antonio Lobao
- The Rongxiang Xu, MD, Center for Regenerative Therapeutics and Joslin-Beth Israel Deaconess Foot Center, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, USA
| | - Ioannis S Vlachos
- Department of Pathology, Beth Israel Deaconess Medical Center, and Harvard Medical School, Boston, MA, USA
| | - Biraja Dash
- Yale Plastic and Reconstructive Surgery-Wound Center, Yale School of Medicine, New Haven, CT, USA
| | - Henry C Hsia
- Yale Plastic and Reconstructive Surgery-Wound Center, Yale School of Medicine, New Haven, CT, USA
| | - Valerie Horsley
- Molecular, Cellular and Developmental Biology, Yale University, New Haven, CT, USA
| | - Swati S Bhasin
- Aflac Cancer and Blood Disorders Center, Children Healthcare of Atlanta, Department of Pediatrics and Biomedical Informatics, Emory University, Atlanta, GA, USA
| | - Aristidis Veves
- The Rongxiang Xu, MD, Center for Regenerative Therapeutics and Joslin-Beth Israel Deaconess Foot Center, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, USA.
| | - Manoj Bhasin
- Aflac Cancer and Blood Disorders Center, Children Healthcare of Atlanta, Department of Pediatrics and Biomedical Informatics, Emory University, Atlanta, GA, USA.
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