1
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Szukala W, Lichawska-Cieslar A, Zawada R, Rumienczyk I, Mikula M, Goryca K, Jura J. Keratinocyte and myeloid MCPIP1 have distinct roles in maintaining skin homeostasis. Biochim Biophys Acta Gen Subj 2024; 1868:130671. [PMID: 39032853 DOI: 10.1016/j.bbagen.2024.130671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 07/02/2024] [Accepted: 07/09/2024] [Indexed: 07/23/2024]
Abstract
The skin is a complex organ, and the intricate network between keratinocytes and immune cells is critical for ensuring skin function. Monocyte chemotactic protein-1-induced protein 1 (MCPIP1) is a ribonuclease that functions as a key negative modulator of inflammation. We previously reported that conditional deletion of MCPIP1 in keratinocytes (Mcpip1EKO) impairs skin integrity in adult mice. A similar phenotype was observed following the depletion of MCPIP1 in the myeloid compartment (Mcpip1MKO). The aim of this study was to develop a keratinocyte and myeloid double-MCPIP1 knockout mouse model to clarify the specific roles of myeloid and epidermal MCPIP1 in skin biology. Histological analyses indicated that the skin morphology changed after depletion of MCPIP1 in cells of myeloid origin as well as in keratinocytes. The thicknesses of the epidermal and subcutaneous fat layers increased in the mice with a loss of epidermal MCPIP1, whereas the loss of myeloid MCPIP1 had the opposite effect. In addition, both types of mice showed opposite responses to stimulation with 12-O-tetradecanoylphorbol-13-acetate. Transcriptomic profiling of whole-skin lysates revealed some common target transcripts in all the knockout mice. Further analyses revealed that distinct pathways are modulated following the loss of epidermal or myeloid MCPIP1. The skin morphology and inflammatory phenotype of keratinocyte and myeloid double-MCPIP1 knockout mice resembled those of mice with only keratinocyte-specific knockout of MCPIP1. Overall, myeloid and epidermal MCPIP1 play important but distinct roles in the modulation of skin-related processes.
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Affiliation(s)
- Weronika Szukala
- Jagiellonian University, Faculty of Biochemistry, Biophysics and Biotechnology, Department of General Biochemistry, Gronostajowa 7, 30-387 Krakow, Poland; Jagiellonian University, Doctoral School of Exact and Natural Sciences, Lojasiewicza 11, 30-348 Krakow, Poland
| | - Agata Lichawska-Cieslar
- Jagiellonian University, Faculty of Biochemistry, Biophysics and Biotechnology, Department of General Biochemistry, Gronostajowa 7, 30-387 Krakow, Poland
| | - Roza Zawada
- Jagiellonian University, Faculty of Biochemistry, Biophysics and Biotechnology, Department of General Biochemistry, Gronostajowa 7, 30-387 Krakow, Poland
| | - Izabela Rumienczyk
- Maria Sklodowska-Curie National Research Institute of Oncology, Roentgena 5, 02-781 Warsaw, Poland
| | - Michal Mikula
- Maria Sklodowska-Curie National Research Institute of Oncology, Roentgena 5, 02-781 Warsaw, Poland
| | - Krzysztof Goryca
- Maria Sklodowska-Curie National Research Institute of Oncology, Roentgena 5, 02-781 Warsaw, Poland; Genomics Core Facility, Centre of New Technologies, University of Warsaw, 02-097 Warsaw, Poland
| | - Jolanta Jura
- Jagiellonian University, Faculty of Biochemistry, Biophysics and Biotechnology, Department of General Biochemistry, Gronostajowa 7, 30-387 Krakow, Poland.
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2
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Koerner L, Wachsmuth L, Kumari S, Schwarzer R, Wagner T, Jiao H, Pasparakis M. ZBP1 causes inflammation by inducing RIPK3-mediated necroptosis and RIPK1 kinase activity-independent apoptosis. Cell Death Differ 2024; 31:938-953. [PMID: 38849574 PMCID: PMC11239871 DOI: 10.1038/s41418-024-01321-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 05/24/2024] [Accepted: 05/29/2024] [Indexed: 06/09/2024] Open
Abstract
Z-DNA binding protein 1 (ZBP1) has important functions in anti-viral immunity and in the regulation of inflammatory responses. ZBP1 induces necroptosis by directly engaging and activating RIPK3, however, the mechanisms by which ZBP1 induces inflammation and in particular the role of RIPK1 and the contribution of cell death-independent signaling remain elusive. Here we show that ZBP1 causes skin inflammation by inducing RIPK3-mediated necroptosis and RIPK1-caspase-8-mediated apoptosis in keratinocytes. ZBP1 induced TNFR1-independent skin inflammation in mice with epidermis-specific ablation of FADD by triggering keratinocyte necroptosis. Moreover, transgenic expression of C-terminally truncated constitutively active ZBP1 (ZBP1ca) in mouse epidermis caused skin inflammation that was only partially inhibited by abrogation of RIPK3-MLKL-dependent necroptosis and fully prevented by combined deficiency in MLKL and caspase-8. Importantly, ZBP1ca induced caspase-8-mediated skin inflammation by RHIM-dependent but kinase activity-independent RIPK1 signaling. Furthermore, ZBP1ca-induced inflammatory cytokine production in the skin was completely prevented by combined inhibition of apoptosis and necroptosis arguing against a cell death-independent pro-inflammatory function of ZBP1. Collectively, these results showed that ZBP1 induces inflammation by activating necroptosis and RIPK1 kinase activity-independent apoptosis.
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Affiliation(s)
- Lioba Koerner
- Institute for Genetics, University of Cologne, 50674, Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50931, Cologne, Germany
| | - Laurens Wachsmuth
- Institute for Genetics, University of Cologne, 50674, Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50931, Cologne, Germany
| | - Snehlata Kumari
- Institute for Genetics, University of Cologne, 50674, Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50931, Cologne, Germany
- Frazer Institute, The University of Queensland, Faculty of Medicine, Brisbane, QLD, Australia
| | - Robin Schwarzer
- Institute for Genetics, University of Cologne, 50674, Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50931, Cologne, Germany
- Genentech Inc, South San Francisco, CA, USA
| | - Theresa Wagner
- Institute for Genetics, University of Cologne, 50674, Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50931, Cologne, Germany
| | - Huipeng Jiao
- Institute for Genetics, University of Cologne, 50674, Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50931, Cologne, Germany
- Life Sciences Institute, Zhejiang University, Hangzhou, China
| | - Manolis Pasparakis
- Institute for Genetics, University of Cologne, 50674, Cologne, Germany.
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50931, Cologne, Germany.
- Center for Molecular Medicine (CMMC), Medical Faculty and University Hospital Cologne, University of Cologne, 50931, Cologne, Germany.
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3
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Kelepouras K, Saggau J, Varanda AB, Zrilic M, Kiefer C, Rakhsh-Khorshid H, Lisewski I, Uranga-Murillo I, Arias M, Pardo J, Tonnus W, Linkermann A, Annibaldi A, Walczak H, Liccardi G. The importance of murine phospho-MLKL-S345 in situ detection for necroptosis assessment in vivo. Cell Death Differ 2024; 31:897-909. [PMID: 38783091 PMCID: PMC11239901 DOI: 10.1038/s41418-024-01313-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 05/02/2024] [Accepted: 05/07/2024] [Indexed: 05/25/2024] Open
Abstract
Necroptosis is a caspase-independent modality of cell death implicated in many inflammatory pathologies. The execution of this pathway requires the formation of a cytosolic platform that comprises RIPK1 and RIPK3 which, in turn, mediates the phosphorylation of the pseudokinase MLKL (S345 in mouse). The activation of this executioner is followed by its oligomerisation and accumulation at the plasma-membrane where it leads to cell death via plasma-membrane destabilisation and consequent permeabilisation. While the biochemical and cellular characterisation of these events have been amply investigated, the study of necroptosis involvement in vivo in animal models is currently limited to the use of Mlkl-/- or Ripk3-/- mice. Yet, even in many of the models in which the involvement of necroptosis in disease aetiology has been genetically demonstrated, the fundamental in vivo characterisation regarding the question as to which tissue(s) and specific cell type(s) therein is/are affected by the pathogenic necroptotic death are missing. Here, we describe and validate an immunohistochemistry and immunofluorescence-based method to reliably detect the phosphorylation of mouse MLKL at serine 345 (pMLKL-S345). We first validate the method using tissues derived from mice in which Caspase-8 (Casp8) or FADD are specifically deleted from keratinocytes, or intestinal epithelial cells, respectively. We next demonstrate the presence of necroptotic activation in the lungs of SARS-CoV-infected mice and in the skin and spleen of mice bearing a Sharpin inactivating mutation. Finally, we exclude necroptosis occurrence in the intestines of mice subjected to TNF-induced septic shock. Importantly, by directly comparing the staining of pMLKL-345 with that of cleaved Caspase-3 staining in some of these models, we identify spatio-temporal and functional differences between necroptosis and apoptosis supporting a role of RIPK3 in inflammation independently of MLKL versus the role of RIPK3 in activation of necroptosis.
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Grants
- Wellcome Trust
- G.L. is funded by the Center for Biochemistry, Univeristy of Cologne - 956400, Köln Fortune, CANcer TARgeting (CANTAR) project NW21-062A, two collaborative research center grants: SFB1399-413326622 Project C06, SFB1530-455784452 Project A03 both funded by the Deutsche Forschungsgemeinschaft (DFG)) and associated to the collaborative SFB1403 also funded by the DFG
- H.W. is funded by the Alexander von Humboldt Foundation, a Wellcome Trust Investigator Award (214342/Z/18/Z), a Medical Research Council Grant (MR/S00811X/1), a Cancer Research UK Programme Grant (A27323) and three collaborative research center grants (SFB1399, Project C06, SFB1530-455784452, Project A03 and SFB1403–414786233) funded by the Deutsche Forschungsgemeinschaft (DFG) and CANcer TARgeting (CANTAR) funded by Netzwerke 2021.
- AA is funded by the Center for Molecular Medine Cologne (CMMC) Junior Research Group program, Deutsche Forschungsgemeinschaft (DFG) (project number AN1717/1-1), the Jürgen Manchot Stiftung foundation, the collaborative research center SFB1530 (Project A5, ID: 455784452)
- JP is funded by FEDER (Fondo Europeo de Desarrollo Regional), Gobierno de Aragón (Group B29_23R), CIBERINFEC (CB21/13/00087), Ministerio de Ciencia, Innovación y Universidades (MCNU)/Agencia Estatal de Investigación (PID2020-113963RBI00)
- MA is funded by a Postdoctoral Juan de la Cierva Contract.
- Work in the Linkermann Lab was funded by the German Research Foundation SFB-TRR205, SFB-TRR 127, SPP2306, and a Heisenberg-Professorship to A.L., project number 324141047, and the international research training group (IRTG) 2251. It was further supported by the BMBF (FERROPath consortium), the TU Dresden / Kings College London transcampus initiative and the DFG-Sachbeihilfe LI 2107/10-1.
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Affiliation(s)
- Konstantinos Kelepouras
- Genome Instability, Inflammation and Cell Death Laboratory, Institute of Biochemistry I, Centre for Biochemistry, Faculty of Medicine, University of Cologne, 50931, Cologne, Germany
- Center for Molecular Medicine Cologne (CMMC), University of Cologne, 50931, Cologne, Germany
| | - Julia Saggau
- Genome Instability, Inflammation and Cell Death Laboratory, Institute of Biochemistry I, Centre for Biochemistry, Faculty of Medicine, University of Cologne, 50931, Cologne, Germany
- Center for Molecular Medicine Cologne (CMMC), University of Cologne, 50931, Cologne, Germany
- Cell Death, Inflammation and Immunity Laboratory, CECAD Cluster of Excellence, University of Cologne, 50931, Cologne, Germany
- Cell Death, Inflammation and Immunity Laboratory, Institute of Biochemistry I, Centre for Biochemistry, Faculty of Medicine, University of Cologne, 50931, Cologne, Germany
| | - Ana Beatriz Varanda
- Cell Death, Inflammation and Immunity Laboratory, CECAD Cluster of Excellence, University of Cologne, 50931, Cologne, Germany
- Cell Death, Inflammation and Immunity Laboratory, Institute of Biochemistry I, Centre for Biochemistry, Faculty of Medicine, University of Cologne, 50931, Cologne, Germany
| | - Matea Zrilic
- Center for Molecular Medicine Cologne (CMMC), University of Cologne, 50931, Cologne, Germany
| | - Christine Kiefer
- Genome Instability, Inflammation and Cell Death Laboratory, Institute of Biochemistry I, Centre for Biochemistry, Faculty of Medicine, University of Cologne, 50931, Cologne, Germany
- Center for Molecular Medicine Cologne (CMMC), University of Cologne, 50931, Cologne, Germany
| | - Hassan Rakhsh-Khorshid
- Genome Instability, Inflammation and Cell Death Laboratory, Institute of Biochemistry I, Centre for Biochemistry, Faculty of Medicine, University of Cologne, 50931, Cologne, Germany
- Center for Molecular Medicine Cologne (CMMC), University of Cologne, 50931, Cologne, Germany
| | - Ina Lisewski
- Center for Molecular Medicine Cologne (CMMC), University of Cologne, 50931, Cologne, Germany
| | - Iratxe Uranga-Murillo
- Department of Microbiology, Radiology, Paediatry and Public Heath, Faculty of Medicine, University of Zaragoza/IIS, Aragon, Spain
- Centro de Investigacion Biomedica en Red de Enfermedades infecciosas (CIBERINFEC), Instituto de Salud Carlos III, Madrid, Spain
| | - Maykel Arias
- Department of Microbiology, Radiology, Paediatry and Public Heath, Faculty of Medicine, University of Zaragoza/IIS, Aragon, Spain
- Centro de Investigacion Biomedica en Red de Enfermedades infecciosas (CIBERINFEC), Instituto de Salud Carlos III, Madrid, Spain
| | - Julian Pardo
- Department of Microbiology, Radiology, Paediatry and Public Heath, Faculty of Medicine, University of Zaragoza/IIS, Aragon, Spain
- Centro de Investigacion Biomedica en Red de Enfermedades infecciosas (CIBERINFEC), Instituto de Salud Carlos III, Madrid, Spain
| | - Wulf Tonnus
- Division of Nephrology, Department of Internal Medicine 3, University Hospital Carl Gustav Carus at the Technische Universität Dresden, Dresden, Germany
| | - Andreas Linkermann
- Division of Nephrology, Department of Internal Medicine 3, University Hospital Carl Gustav Carus at the Technische Universität Dresden, Dresden, Germany
- Division of Nephrology, Department of Medicine, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Alessandro Annibaldi
- Center for Molecular Medicine Cologne (CMMC), University of Cologne, 50931, Cologne, Germany
| | - Henning Walczak
- Cell Death, Inflammation and Immunity Laboratory, CECAD Cluster of Excellence, University of Cologne, 50931, Cologne, Germany
- Cell Death, Inflammation and Immunity Laboratory, Institute of Biochemistry I, Centre for Biochemistry, Faculty of Medicine, University of Cologne, 50931, Cologne, Germany
- Centre for Cell Death, Cancer and Inflammation, UCL Cancer Institute, University College London, WC1E 6BT, London, UK
| | - Gianmaria Liccardi
- Genome Instability, Inflammation and Cell Death Laboratory, Institute of Biochemistry I, Centre for Biochemistry, Faculty of Medicine, University of Cologne, 50931, Cologne, Germany.
- Center for Molecular Medicine Cologne (CMMC), University of Cologne, 50931, Cologne, Germany.
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4
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Satta JP, Lan Q, Taketo MM, Mikkola ML. Stabilization of Epithelial β-Catenin Compromises Mammary Cell Fate Acquisition and Branching Morphogenesis. J Invest Dermatol 2024; 144:1223-1237.e10. [PMID: 38159590 DOI: 10.1016/j.jid.2023.11.018] [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: 08/23/2023] [Revised: 11/07/2023] [Accepted: 11/14/2023] [Indexed: 01/03/2024]
Abstract
The Wnt/β-catenin pathway plays a critical role in cell fate specification, morphogenesis, and stem cell activation across diverse tissues, including the skin. In mammals, the embryonic surface epithelium gives rise to the epidermis as well as the associated appendages including hair follicles and mammary glands, both of which depend on epithelial Wnt/β-catenin activity for initiation of their development. Later on, Wnts are thought to enhance mammary gland growth and branching, whereas in hair follicles, they are essential for hair shaft formation. In this study, we report a strong downregulation of epithelial Wnt/β-catenin activity as the mammary bud progresses to branching. We show that forced activation of epithelial β-catenin severely compromises embryonic mammary gland branching. However, the phenotype of conditional Lef1-deficient embryos implies that a low level of Wnt/β-catenin activity is necessary for mammary cell survival. Transcriptomic profiling suggests that sustained high β-catenin activity leads to maintenance of mammary bud gene signature at the expense of outgrowth/branching gene signature. In addition, it leads to upregulation of epidermal differentiation genes. Strikingly, we find a partial switch to hair follicle fate early on upon stabilization of β-catenin, suggesting that the level of epithelial Wnt/β-catenin signaling activity may contribute to the choice between skin appendage identities.
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Affiliation(s)
- Jyoti Prabha Satta
- Cell and Tissue Dynamics Research Program, Institute of Biotechnology, Helsinki Institute of Life Sciences (HILIFE), University of Helsinki, Helsinki, Finland
| | - Qiang Lan
- Cell and Tissue Dynamics Research Program, Institute of Biotechnology, Helsinki Institute of Life Sciences (HILIFE), University of Helsinki, Helsinki, Finland
| | - Makoto Mark Taketo
- Colon Cancer Project, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Marja L Mikkola
- Cell and Tissue Dynamics Research Program, Institute of Biotechnology, Helsinki Institute of Life Sciences (HILIFE), University of Helsinki, Helsinki, Finland.
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5
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Li L, Li J, Lu Y, Li W, Yang J, Wang M, Miao C, Tian Z, Zhang M, Tang X. Conditional knockout mouse model reveals a critical role of peroxiredoxin 1 in oral leukoplakia carcinogenesis. Heliyon 2024; 10:e31227. [PMID: 38818156 PMCID: PMC11137383 DOI: 10.1016/j.heliyon.2024.e31227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 04/12/2024] [Accepted: 05/13/2024] [Indexed: 06/01/2024] Open
Abstract
Peroxiredoxin 1 (Prx1) is an antioxidant protein that may promote the carcinogenesis in oral leukoplakia (OLK). To investigate the effect of Prx1 on the oral mucosal epithelium of OLK, we generated a Prx1 conditional knockout (cKO) mouse model. The mRNA and gRNA were generated using the clustered regularly interspaced short palindromic repeats/CRISPR-associated protein 9 (CRISPR/Cas9) technique. An infusion cloning method was used to construct a homologous recombination vector. To obtain the F0 generation mice, fertilized eggs of C57BL/6J mice were microinjected with Cas9 mRNA, gRNA, and a donor vector. Polymerase chain reaction (PCR) amplification and sequencing were used to identify F1 generation mice. Using the cyclization recombination-enzyme-locus of the X-overP1 (Cre-loxP) system, we created a Prx1 cKO mouse model, and the effectiveness of the knockout was confirmed through immunohistochemistry. We examined the influence of Prx1 knockout on the occurrence of OLK in mice by constructing a model of tongue mucosa carcinogenesis induced by 4-nitroquinoline-1-oxide (4NQO). Prx1 modification was present in the F1 generation, as evidenced by PCR amplification and sequencing. Prx1flox/flox: Cre + mice exhibited normal growth and fertility. Immunohistochemical analysis revealed that tongue epithelial cells in Prx1flox/flox: Cre + mice displayed a distinct deletion of Prx1. An examination of the heart, liver, spleen, lung, and kidney tissues revealed no visible histological changes. Histological analysis showed a reduction in the occurrence of the malignant transformation of OLK in the tongue tissues of Prx1flox/flox: Cre + mice. Ki67 immunostaining showed that Prx1 knockout significantly inhibited cell proliferation in the tongue epithelial. Our research developed a conditional knockout mouse model for Prx1. The obtained results provide insights into the function of Prx1 in the development of oral cancer and emphasize its potential as a therapeutic target for precancerous oral lesions.
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Affiliation(s)
- Lingyu Li
- Department of Oral Pathology, Beijing Stomatological Hospital & School of Stomatology, Capital Medical University, Beijing, China
| | - Jing Li
- Division of Oral Pathology, Beijing Institute of Dental Research, Beijing Stomatological Hospital & School of Stomatology, Capital Medical University, Beijing, China
| | - Yunping Lu
- Department of Prosthodontics, Beijing Stomatological Hospital & School of Stomatology, Capital Medical University, Beijing, China
| | - Wenjing Li
- Division of Oral Pathology, Beijing Institute of Dental Research, Beijing Stomatological Hospital & School of Stomatology, Capital Medical University, Beijing, China
| | - Jing Yang
- Division of Oral Pathology, Beijing Institute of Dental Research, Beijing Stomatological Hospital & School of Stomatology, Capital Medical University, Beijing, China
| | - Min Wang
- Division of Oral Pathology, Beijing Institute of Dental Research, Beijing Stomatological Hospital & School of Stomatology, Capital Medical University, Beijing, China
| | - Congcong Miao
- Division of Oral Pathology, Beijing Institute of Dental Research, Beijing Stomatological Hospital & School of Stomatology, Capital Medical University, Beijing, China
| | - Zhenchuan Tian
- Division of Oral Pathology, Beijing Institute of Dental Research, Beijing Stomatological Hospital & School of Stomatology, Capital Medical University, Beijing, China
| | - Min Zhang
- Division of Oral Pathology, Beijing Institute of Dental Research, Beijing Stomatological Hospital & School of Stomatology, Capital Medical University, Beijing, China
| | - Xiaofei Tang
- Division of Oral Pathology, Beijing Institute of Dental Research, Beijing Stomatological Hospital & School of Stomatology, Capital Medical University, Beijing, China
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6
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Grzonka M, Bazzi H. Mouse SAS-6 is required for centriole formation in embryos and integrity in embryonic stem cells. eLife 2024; 13:e94694. [PMID: 38407237 PMCID: PMC10917421 DOI: 10.7554/elife.94694] [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: 11/23/2023] [Accepted: 12/12/2023] [Indexed: 02/27/2024] Open
Abstract
SAS-6 (SASS6) is essential for centriole formation in human cells and other organisms but its functions in the mouse are unclear. Here, we report that Sass6-mutant mouse embryos lack centrioles, activate the mitotic surveillance cell death pathway, and arrest at mid-gestation. In contrast, SAS-6 is not required for centriole formation in mouse embryonic stem cells (mESCs), but is essential to maintain centriole architecture. Of note, centrioles appeared after just one day of culture of Sass6-mutant blastocysts, from which mESCs are derived. Conversely, the number of cells with centrosomes is drastically decreased upon the exit from a mESC pluripotent state. At the mechanistic level, the activity of the master kinase in centriole formation, PLK4, associated with increased centriolar and centrosomal protein levels, endow mESCs with the robustness in using a SAS-6-independent centriole-biogenesis pathway. Collectively, our data suggest a differential requirement for mouse SAS-6 in centriole formation or integrity depending on PLK4 activity and centrosome composition.
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Affiliation(s)
- Marta Grzonka
- Department of Cell Biology of the Skin and Department of Dermatology and Venereology, Medical Faculty, University of CologneCologneGermany
- The Cologne Cluster of Excellence in Cellular Stress Responses in Aging-associated Diseases (CECAD), Medical Faculty, University of CologneCologneGermany
- Graduate School for Biological Sciences, University of CologneCologneGermany
| | - Hisham Bazzi
- Department of Cell Biology of the Skin and Department of Dermatology and Venereology, Medical Faculty, University of CologneCologneGermany
- The Cologne Cluster of Excellence in Cellular Stress Responses in Aging-associated Diseases (CECAD), Medical Faculty, University of CologneCologneGermany
- Center for Molecular Medicine Cologne (CMMC), Medical Faculty, University of CologneCologneGermany
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7
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Villeneuve C, Hashmi A, Ylivinkka I, Lawson-Keister E, Miroshnikova YA, Pérez-González C, Myllymäki SM, Bertillot F, Yadav B, Zhang T, Matic Vignjevic D, Mikkola ML, Manning ML, Wickström SA. Mechanical forces across compartments coordinate cell shape and fate transitions to generate tissue architecture. Nat Cell Biol 2024; 26:207-218. [PMID: 38302719 PMCID: PMC10866703 DOI: 10.1038/s41556-023-01332-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Accepted: 12/08/2023] [Indexed: 02/03/2024]
Abstract
Morphogenesis and cell state transitions must be coordinated in time and space to produce a functional tissue. An excellent paradigm to understand the coupling of these processes is mammalian hair follicle development, which is initiated by the formation of an epithelial invagination-termed placode-that coincides with the emergence of a designated hair follicle stem cell population. The mechanisms directing the deformation of the epithelium, cell state transitions and physical compartmentalization of the placode are unknown. Here we identify a key role for coordinated mechanical forces stemming from contractile, proliferative and proteolytic activities across the epithelial and mesenchymal compartments in generating the placode structure. A ring of fibroblast cells gradually wraps around the placode cells to generate centripetal contractile forces, which, in collaboration with polarized epithelial myosin activity, promote elongation and local tissue thickening. These mechanical stresses further enhance compartmentalization of Sox9 expression to promote stem cell positioning. Subsequently, proteolytic remodelling locally softens the basement membrane to facilitate a release of pressure on the placode, enabling localized cell divisions, tissue fluidification and epithelial invagination into the underlying mesenchyme. Together, our experiments and modelling identify dynamic cell shape transformations and tissue-scale mechanical cooperation as key factors for orchestrating organ formation.
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Affiliation(s)
- Clémentine Villeneuve
- Stem Cells and Metabolism Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- Department of Cell and Tissue Dynamics, Max Planck Institute for Molecular Biomedicine, Münster, Germany
| | - Ali Hashmi
- Stem Cells and Metabolism Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Irene Ylivinkka
- Stem Cells and Metabolism Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | | | - Yekaterina A Miroshnikova
- Stem Cells and Metabolism Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Carlos Pérez-González
- Cell Biology and Cancer Unit, Institut Curie, PSL Research University, CNRS, Paris, France
| | - Satu-Marja Myllymäki
- Stem Cells and Metabolism Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- Cell and Tissue Dynamics Research Program, Institute of Biotechnology, Helsinki Institute of Life Science (HiLIFE), University of Helsinki, Helsinki, Finland
| | - Fabien Bertillot
- Stem Cells and Metabolism Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- Department of Cell and Tissue Dynamics, Max Planck Institute for Molecular Biomedicine, Münster, Germany
| | - Bhagwan Yadav
- Stem Cells and Metabolism Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Tao Zhang
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | | | - Marja L Mikkola
- Cell and Tissue Dynamics Research Program, Institute of Biotechnology, Helsinki Institute of Life Science (HiLIFE), University of Helsinki, Helsinki, Finland
| | - M Lisa Manning
- Department of Physics and BioInspired Institute, Syracuse University, Syracuse, NY, USA.
| | - Sara A Wickström
- Stem Cells and Metabolism Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland.
- Department of Cell and Tissue Dynamics, Max Planck Institute for Molecular Biomedicine, Münster, Germany.
- Helsinki Institute of Life Science, Biomedicum Helsinki, University of Helsinki, Helsinki, Finland.
- Wihuri Research Institute, Biomedicum Helsinki, University of Helsinki, Helsinki, Finland.
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8
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Eren RO, Kaya GG, Schwarzer R, Pasparakis M. IKKε and TBK1 prevent RIPK1 dependent and independent inflammation. Nat Commun 2024; 15:130. [PMID: 38167258 PMCID: PMC10761900 DOI: 10.1038/s41467-023-44372-y] [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: 03/07/2023] [Accepted: 12/11/2023] [Indexed: 01/05/2024] Open
Abstract
TBK1 and IKKε regulate multiple cellular processes including anti-viral type-I interferon responses, metabolism and TNF receptor signaling. However, the relative contributions and potentially redundant functions of IKKε and TBK1 in cell death, inflammation and tissue homeostasis remain poorly understood. Here we show that IKKε compensates for the loss of TBK1 kinase activity to prevent RIPK1-dependent and -independent inflammation in mice. Combined inhibition of IKKε and TBK1 kinase activities caused embryonic lethality that was rescued by heterozygous expression of kinase-inactive RIPK1. Adult mice expressing kinase-inactive versions of IKKε and TBK1 developed systemic inflammation that was induced by both RIPK1-dependent and -independent mechanisms. Combined inhibition of IKKε and TBK1 kinase activities in myeloid cells induced RIPK1-dependent cell death and systemic inflammation mediated by IL-1 family cytokines. Tissue-specific studies showed that IKKε and TBK1 were required to prevent cell death and inflammation in the intestine but were dispensable for liver and skin homeostasis. Together, these findings revealed that IKKε and TBK1 exhibit tissue-specific functions that are important to prevent cell death and inflammation and maintain tissue homeostasis.
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Affiliation(s)
- Remzi Onur Eren
- Institute for Genetics and Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
| | - Göksu Gökberk Kaya
- Institute for Genetics and Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
| | - Robin Schwarzer
- Institute for Genetics and Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
- Genentech Inc, South San Francisco, USA
| | - Manolis Pasparakis
- Institute for Genetics and Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany.
- Center for Molecular Medicine (CMMC), University of Cologne, Cologne, Germany.
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9
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Tiyaboonchai A, Wakefield L, Vonada A, May CL, Dorrell C, Enicks D, Sairavi A, Kaestner KH, Grompe M. In vivo tracing of the Cytokeratin 14 lineages using self-cleaving guide RNAs and CRISPR/Cas9. Dev Biol 2023; 504:120-127. [PMID: 37813160 DOI: 10.1016/j.ydbio.2023.09.011] [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: 02/07/2023] [Revised: 09/27/2023] [Accepted: 09/28/2023] [Indexed: 10/11/2023]
Abstract
The current gold-standard for genetic lineage tracing in transgenic mice is based on cell-type specific expression of Cre recombinase. As an alternative, we developed a cell-type specific CRISPR/spCas9 system for lineage tracing. This method relies on RNA polymerase II promoter driven self-cleaving guide RNAs (scgRNA) to achieve tissue-specificity. To demonstrate proof-of-principle for this approach a transgenic mouse was generated harbouring a knock-in of a scgRNA into the Cytokeratin 14 (Krt14) locus. Krt14 expression marks the stem cells of squamous epithelium in the skin and oral mucosa. The scgRNA targets a Stop cassette preceding a fluorescent reporter in the Ai9-tdtomato mouse. Ai9-tdtomato reporter mice harbouring this allele along with a spCas9 transgene demonstrated precise marking of the Krt14 lineage. We conclude that RNA polymerase II promoter driven scgRNAs enable the use of CRISPR/spCas9 for genetic lineage tracing.
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Affiliation(s)
- Amita Tiyaboonchai
- Oregon Stem Cell Center, Oregon Health & Science University, Portland, OR, 97239, USA; Department of Pediatrics, Oregon Health & Science University, Portland, OR, 97239, USA.
| | - Leslie Wakefield
- Oregon Stem Cell Center, Oregon Health & Science University, Portland, OR, 97239, USA; Department of Pediatrics, Oregon Health & Science University, Portland, OR, 97239, USA
| | - Anne Vonada
- Oregon Stem Cell Center, Oregon Health & Science University, Portland, OR, 97239, USA; Department of Molecular and Medical Genetics, Oregon Health & Science University, Portland, OR, 97239, USA
| | - Catherine L May
- Institute of Diabetes, Obesity, and Metabolism, Perelman School of Medicine, The University of Pennsylvania, Philadelphia, PA, 19104, USA; Department of Genetics, Perelman School of Medicine, The University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Craig Dorrell
- Oregon Stem Cell Center, Oregon Health & Science University, Portland, OR, 97239, USA; Department of Pediatrics, Oregon Health & Science University, Portland, OR, 97239, USA
| | - David Enicks
- Oregon Stem Cell Center, Oregon Health & Science University, Portland, OR, 97239, USA; Department of Pediatrics, Oregon Health & Science University, Portland, OR, 97239, USA
| | - Anusha Sairavi
- Department of Molecular and Medical Genetics, Oregon Health & Science University, Portland, OR, 97239, USA
| | - Klaus H Kaestner
- Institute of Diabetes, Obesity, and Metabolism, Perelman School of Medicine, The University of Pennsylvania, Philadelphia, PA, 19104, USA; Department of Genetics, Perelman School of Medicine, The University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Markus Grompe
- Oregon Stem Cell Center, Oregon Health & Science University, Portland, OR, 97239, USA; Department of Pediatrics, Oregon Health & Science University, Portland, OR, 97239, USA; Department of Molecular and Medical Genetics, Oregon Health & Science University, Portland, OR, 97239, USA
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10
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Carman LE, Samulevich ML, Aneskievich BJ. Repressive Control of Keratinocyte Cytoplasmic Inflammatory Signaling. Int J Mol Sci 2023; 24:11943. [PMID: 37569318 PMCID: PMC10419196 DOI: 10.3390/ijms241511943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 07/17/2023] [Accepted: 07/20/2023] [Indexed: 08/13/2023] Open
Abstract
The overactivity of keratinocyte cytoplasmic signaling contributes to several cutaneous inflammatory and immune pathologies. An important emerging complement to proteins responsible for this overactivity is signal repression brought about by several proteins and protein complexes with the native role of limiting inflammation. The signaling repression by these proteins distinguishes them from transmembrane receptors, kinases, and inflammasomes, which drive inflammation. For these proteins, defects or deficiencies, whether naturally arising or in experimentally engineered skin inflammation models, have clearly linked them to maintaining keratinocytes in a non-activated state or returning cells to a post-inflamed state after a signaling event. Thus, together, these proteins help to resolve acute inflammatory responses or limit the development of chronic cutaneous inflammatory disease. We present here an integrated set of demonstrated or potentially inflammation-repressive proteins or protein complexes (linear ubiquitin chain assembly complex [LUBAC], cylindromatosis lysine 63 deubiquitinase [CYLD], tumor necrosis factor alpha-induced protein 3-interacting protein 1 [TNIP1], A20, and OTULIN) for a comprehensive view of cytoplasmic signaling highlighting protein players repressing inflammation as the needed counterpoints to signal activators and amplifiers. Ebb and flow of players on both sides of this inflammation equation would be of physiological advantage to allow acute response to damage or pathogens and yet guard against chronic inflammatory disease. Further investigation of the players responsible for repressing cytoplasmic signaling would be foundational to developing new chemical-entity pharmacologics to stabilize or enhance their function when clinical intervention is needed to restore balance.
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Affiliation(s)
- Liam E. Carman
- Graduate Program in Pharmacology & Toxicology, University of Connecticut, Storrs, CT 06269-3092, USA; (L.E.C.); (M.L.S.)
| | - Michael L. Samulevich
- Graduate Program in Pharmacology & Toxicology, University of Connecticut, Storrs, CT 06269-3092, USA; (L.E.C.); (M.L.S.)
| | - Brian J. Aneskievich
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Connecticut, Storrs, CT 06269-3092, USA
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11
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Schaller T, Ringen J, Fischer B, Bieler T, Perius K, Knopp T, Kommoss KS, Korn T, Heikenwälder M, Oelze M, Daiber A, Münzel T, Kramer D, Wenzel P, Wild J, Karbach S, Waisman A. Reactive oxygen species produced by myeloid cells in psoriasis as a potential biofactor contributing to the development of vascular inflammation. Biofactors 2023; 49:861-874. [PMID: 37139784 DOI: 10.1002/biof.1949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 03/04/2023] [Indexed: 05/05/2023]
Abstract
Psoriasis is an immune-mediated inflammatory skin disease driven by interleukin-17A (IL-17A) and associated with cardiovascular dysfunction. We used a severe psoriasis mouse model of keratinocyte IL-17A overexpression (K14-IL-17Aind/+ , IL-17Aind/+ control mice) to investigate the activity of neutrophils and a potential cellular interconnection between skin and vasculature. Levels of dermal reactive oxygen species (ROS) and their release by neutrophils were measured by lucigenin-/luminol-based assays, respectively. Quantitative RT-PCR determined neutrophilic activity and inflammation-related markers in skin and aorta. To track skin-derived immune cells, we used PhAM-K14-IL-17Aind/+ mice allowing us to mark all cells in the skin by photoconversion of a fluorescent protein to analyze their migration into spleen, aorta, and lymph nodes by flow cytometry. Compared to controls, K14-IL-17Aind/+ mice exhibited elevated ROS levels in the skin and a higher neutrophilic oxidative burst accompanied by the upregulation of several activation markers. In line with these results psoriatic mice displayed elevated expression of genes involved in neutrophil migration (e.g., Cxcl2 and S100a9) in skin and aorta. However, no direct immune cell migration from the psoriatic skin into the aortic vessel wall was observed. Neutrophils of psoriatic mice showed an activated phenotype, but no direct cellular migration from the skin to the vasculature was observed. This suggests that highly active vasculature-invading neutrophils must originate directly from the bone marrow. Hence, the skin-vasculature crosstalk in psoriasis is most likely based on the systemic effects of the autoimmune skin disease, emphasizing the importance of a systemic therapeutic approach for psoriasis patients.
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Affiliation(s)
- Theresa Schaller
- Institute for Molecular Medicine, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Julia Ringen
- Department of Cardiology - Cardiology I, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
- Center of Thrombosis and Hemostasis (CTH), University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Berenice Fischer
- Department of Dermatology, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Tabea Bieler
- Division of Chronic Inflammation and Cancer, German Cancer Research Center (DKFZ), Heidelberg, Germany
- Interdisciplinary Center for Scientific Computing (IWR), University of Heidelberg, Heidelberg, Germany
| | - Katharina Perius
- Department of Cardiology - Cardiology I, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
- Center of Thrombosis and Hemostasis (CTH), University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Tanja Knopp
- Department of Cardiology - Cardiology I, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
- Center of Thrombosis and Hemostasis (CTH), University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
- Department of Hematology and Central Hematology Laboratory, Inselspital University Hospital Bern, Bern, Switzerland
- Department of Clinical Research, University of Bern, Bern, Switzerland
| | - Katharina S Kommoss
- Division of Chronic Inflammation and Cancer, German Cancer Research Center (DKFZ), Heidelberg, Germany
- Department of Dermatology, University of Heidelberg, Heidelberg, Germany
| | - Thomas Korn
- Institute for Experimental Neuroimmunology, Technical University of Munich School of Medicine, Munich, Germany
- Munich Cluster for Systems Neurology (SyNergy) Ludwig-Maximilians-University Munich, Munich, Germany
| | - Mathias Heikenwälder
- Division of Chronic Inflammation and Cancer, German Cancer Research Center (DKFZ), Heidelberg, Germany
- The M3 Research Institute, Eberhard Karls University Tübingen, Tübingen, Germany
| | - Matthias Oelze
- Department of Cardiology - Cardiology I, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
- German Center for Cardiovascular Research (DZHK) - Partner Site Rhine-Main, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Andreas Daiber
- Department of Cardiology - Cardiology I, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
- German Center for Cardiovascular Research (DZHK) - Partner Site Rhine-Main, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Thomas Münzel
- Department of Cardiology - Cardiology I, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
- Center of Thrombosis and Hemostasis (CTH), University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
- German Center for Cardiovascular Research (DZHK) - Partner Site Rhine-Main, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Daniela Kramer
- Department of Dermatology, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Philip Wenzel
- Department of Cardiology - Cardiology I, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
- Center of Thrombosis and Hemostasis (CTH), University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
- German Center for Cardiovascular Research (DZHK) - Partner Site Rhine-Main, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Johannes Wild
- Department of Cardiology - Cardiology I, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
- Center of Thrombosis and Hemostasis (CTH), University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
- German Center for Cardiovascular Research (DZHK) - Partner Site Rhine-Main, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Susanne Karbach
- Department of Cardiology - Cardiology I, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
- Center of Thrombosis and Hemostasis (CTH), University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
- German Center for Cardiovascular Research (DZHK) - Partner Site Rhine-Main, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Ari Waisman
- Institute for Molecular Medicine, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
- Research Center for Immunotherapy, Johannes Gutenberg-University Mainz, Mainz, Germany
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12
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Rübsam M, Püllen R, Tellkamp F, Bianco A, Peskoller M, Bloch W, Green KJ, Merkel R, Hoffmann B, Wickström SA, Niessen CM. Polarity signaling balances epithelial contractility and mechanical resistance. Sci Rep 2023; 13:7743. [PMID: 37173371 PMCID: PMC10182030 DOI: 10.1038/s41598-023-33485-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 04/13/2023] [Indexed: 05/15/2023] Open
Abstract
Epithelia maintain a functional barrier during tissue turnover while facing varying mechanical stress. This maintenance requires both dynamic cell rearrangements driven by actomyosin-linked intercellular adherens junctions and ability to adapt to and resist extrinsic mechanical forces enabled by keratin filament-linked desmosomes. How these two systems crosstalk to coordinate cellular movement and mechanical resilience is not known. Here we show that in stratifying epithelia the polarity protein aPKCλ controls the reorganization from stress fibers to cortical actomyosin during differentiation and upward movement of cells. Without aPKC, stress fibers are retained resulting in increased contractile prestress. This aberrant stress is counterbalanced by reorganization and bundling of keratins, thereby increasing mechanical resilience. Inhibiting contractility in aPKCλ-/- cells restores normal cortical keratin networks but also normalizes resilience. Consistently, increasing contractile stress is sufficient to induce keratin bundling and enhance resilience, mimicking aPKC loss. In conclusion, our data indicate that keratins sense the contractile stress state of stratified epithelia and balance increased contractility by mounting a protective response to maintain tissue integrity.
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Affiliation(s)
- Matthias Rübsam
- Department Cell Biology of the Skin, University Hospital Cologne, University of Cologne, Cologne, Germany.
- Cologne Excellence Cluster for Stress Responses in Ageing-Associated Diseases (CECAD), University of Cologne, Cologne, Germany.
- Center for Molecular Medicine Cologne (CMMC), University Hospital Cologne, University of Cologne, Cologne, Germany.
- Max Planck Institute for Biology of Ageing, 50931, Cologne, Germany.
| | - Robin Püllen
- Forschungszentrum Jülich, Institute of Biological Information Processing, IBI-2: Mechanobiology, 52428, Jülich, Germany
| | - Frederik Tellkamp
- Department Cell Biology of the Skin, University Hospital Cologne, University of Cologne, Cologne, Germany
- Cologne Excellence Cluster for Stress Responses in Ageing-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
- Institute for Genetics, University of Cologne, Cologne, Germany
| | - Alessandra Bianco
- Department Cell Biology of the Skin, University Hospital Cologne, University of Cologne, Cologne, Germany
- Cologne Excellence Cluster for Stress Responses in Ageing-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
| | - Marc Peskoller
- Department Cell Biology of the Skin, University Hospital Cologne, University of Cologne, Cologne, Germany
- Cologne Excellence Cluster for Stress Responses in Ageing-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
- Center for Molecular Medicine Cologne (CMMC), University Hospital Cologne, University of Cologne, Cologne, Germany
| | - Wilhelm Bloch
- Department of Molecular and Cellular Sport Medicine, Institute of Cardiovascular Research and Sport Medicine, German Sport University of Cologne, Cologne, Germany
| | - Kathleen J Green
- Departments of Pathology and Dermatology, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611, USA
| | - Rudolf Merkel
- Forschungszentrum Jülich, Institute of Biological Information Processing, IBI-2: Mechanobiology, 52428, Jülich, Germany
| | - Bernd Hoffmann
- Forschungszentrum Jülich, Institute of Biological Information Processing, IBI-2: Mechanobiology, 52428, Jülich, Germany
| | - Sara A Wickström
- Cologne Excellence Cluster for Stress Responses in Ageing-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
- Max Planck Institute for Biology of Ageing, 50931, Cologne, Germany
- Stem Cells and Metabolism Research Program, Faculty of Medicine, University of Helsinki, 00290, Helsinki, Finland
| | - Carien M Niessen
- Department Cell Biology of the Skin, University Hospital Cologne, University of Cologne, Cologne, Germany.
- Cologne Excellence Cluster for Stress Responses in Ageing-Associated Diseases (CECAD), University of Cologne, Cologne, Germany.
- Center for Molecular Medicine Cologne (CMMC), University Hospital Cologne, University of Cologne, Cologne, Germany.
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13
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Xu X, Yu C, Xu L, Xu J. Emerging roles of keratinocytes in nociceptive transduction and regulation. Front Mol Neurosci 2022; 15:982202. [PMID: 36157074 PMCID: PMC9500148 DOI: 10.3389/fnmol.2022.982202] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 08/23/2022] [Indexed: 01/07/2023] Open
Abstract
Keratinocytes are the predominant block-building cells in the epidermis. Emerging evidence has elucidated the roles of keratinocytes in a wide range of pathophysiological processes including cutaneous nociception, pruritus, and inflammation. Intraepidermal free nerve endings are entirely enwrapped within the gutters of keratinocyte cytoplasm and form en passant synaptic-like contacts with keratinocytes. Keratinocytes can detect thermal, mechanical, and chemical stimuli through transient receptor potential ion channels and other sensory receptors. The activated keratinocytes elicit calcium influx and release ATP, which binds to P2 receptors on free nerve endings and excites sensory neurons. This process is modulated by the endogenous opioid system and endothelin. Keratinocytes also express neurotransmitter receptors of adrenaline, acetylcholine, glutamate, and γ-aminobutyric acid, which are involved in regulating the activation and migration, of keratinocytes. Furthermore, keratinocytes serve as both sources and targets of neurotrophic factors, pro-inflammatory cytokines, and neuropeptides. The autocrine and/or paracrine mechanisms of these mediators create a bidirectional feedback loop that amplifies neuroinflammation and contributes to peripheral sensitization.
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Affiliation(s)
- Xiaohan Xu
- Department of Anesthesiology, Chinese Academy of Medical Sciences & Peking Union Medical College Hospital, Beijing, China
| | - Catherine Yu
- Department of Pain Management, Anesthesiology Institute, Cleveland, OH, United States,Department of Inflammation and Immunity, Lerner Research Institute, Cleveland, OH, United States,Cleveland Clinic, Case Western Reserve University, Cleveland, OH, United States
| | - Li Xu
- Department of Anesthesiology, Chinese Academy of Medical Sciences & Peking Union Medical College Hospital, Beijing, China,*Correspondence: Li Xu,
| | - Jijun Xu
- Department of Pain Management, Anesthesiology Institute, Cleveland, OH, United States,Department of Inflammation and Immunity, Lerner Research Institute, Cleveland, OH, United States,Cleveland Clinic, Case Western Reserve University, Cleveland, OH, United States,*Correspondence: Li Xu,
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14
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Sugden CJ, Iorio V, Troughton LD, Liu K, Morais MRPT, Lennon R, Bou-Gharios G, Hamill KJ. Laminin N-terminus α31 expression during development is lethal and causes widespread tissue-specific defects in a transgenic mouse model. FASEB J 2022; 36:e22318. [PMID: 35648586 PMCID: PMC9328196 DOI: 10.1096/fj.202002588rrr] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 03/28/2022] [Accepted: 04/05/2022] [Indexed: 11/11/2022]
Abstract
Laminins (LMs) are essential components of all basement membranes where they regulate an extensive array of tissue functions. Alternative splicing from the laminin α3 gene produces a non‐laminin but netrin‐like protein, Laminin N terminus α31 (LaNt α31). LaNt α31 is widely expressed in intact tissue and is upregulated in epithelial cancers and during wound healing. In vitro functional studies have shown that LaNt α31 can influence numerous aspects of epithelial cell behavior via modifying matrix organization, suggesting a new model of laminin auto‐regulation. However, the function of this protein has not been established in vivo. Here, a mouse transgenic line was generated using the ubiquitin C promoter to drive inducible expression of LaNt α31. When expression was induced at embryonic day 15.5, LaNt α31 transgenic animals were not viable at birth, exhibiting localized regions of erythema. Histologically, the most striking defect was widespread evidence of extravascular bleeding across multiple tissues. Additionally, LaNt α31 transgene expressing animals exhibited kidney epithelial detachment, tubular dilation, disruption of the epidermal basal cell layer and of the hair follicle outer root sheath, and ~50% reduction of cell numbers in the liver, associated with depletion of hematopoietic erythrocytic foci. These findings provide the first in vivo evidence that LaNt α31 can influence tissue morphogenesis.
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Affiliation(s)
- Conor J Sugden
- Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, UK
| | - Valentina Iorio
- Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, UK
| | - Lee D Troughton
- Department of Cell and Molecular Physiology, Stritch School of Medicine, Loyola University Chicago, Maywood, Illinois, USA
| | - Ke Liu
- Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, UK
| | - Mychel R P T Morais
- Wellcome Centre for Cell-Matrix Research, Division of Cell-Matrix Biology and Regenerative Medicine, The University of Manchester, Manchester, UK
| | - Rachel Lennon
- Wellcome Centre for Cell-Matrix Research, Division of Cell-Matrix Biology and Regenerative Medicine, The University of Manchester, Manchester, UK
| | - George Bou-Gharios
- Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, UK
| | - Kevin J Hamill
- Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, UK
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15
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Pop S, Urtatiz O, Van Raamsdonk CD. Isolation of tdTomato Expressing Inter-follicular Epidermal Melanocytes or Keratinocytes from Mouse Tail Skin. Bio Protoc 2022; 12:e4398. [PMID: 35800096 PMCID: PMC9081482 DOI: 10.21769/bioprotoc.4398] [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: 02/25/2022] [Revised: 12/22/2021] [Accepted: 03/01/2022] [Indexed: 12/29/2022] Open
Abstract
The epidermis is the outermost layer of the skin. It is made up of mostly keratinocytes along with a small number of melanocytes and Langerhans cells. Melanocytes produce a pigment called melanin, which is transferred to the keratinocytes, and protects these cells from damage from UV radiation, as well as generating hair and skin colours. In this important relationship, keratinocytes exert control over melanocytes. Many questions regarding keratinocyte-melanocyte interactions have yet to be answered, and would benefit from study in model systems, to address diseases such as vitiligo and cutaneous melanoma. Most of the mouse is covered in fur and these areas lack the skin pigmenting inter-follicular epidermal (IFE) melanocytes. However, the mouse tail is pigmented analogously to human skin. Here, we present a method for isolating IFE melanocytes or keratinocytes expressing the tdTomato marker from the mouse tail, using fluorescence-activated cell sorting (FACS). The method involves firstly separating the tail skin epidermis from the dermis, and then digesting the epidermis to produce dissociated cells, which can then be sorted. These isolated cell populations can be studied using RNAseq or cultured in vitro. This protocol isolates IFE melanocytes or keratinocytes and immediately provides reasonable yields of cells, without the need to stain the cells for cell specific markers.
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Affiliation(s)
- Samuel Pop
- Department of Medical Genetics, Life Sciences Institute, University of British Columbia, 2350 Health Sciences Mall, Vancouver B.C., V6T 1Z3, Canada
| | - Oscar Urtatiz
- Department of Medical Genetics, Life Sciences Institute, University of British Columbia, 2350 Health Sciences Mall, Vancouver B.C., V6T 1Z3, Canada
| | - Catherine D. Van Raamsdonk
- Department of Medical Genetics, Life Sciences Institute, University of British Columbia, 2350 Health Sciences Mall, Vancouver B.C., V6T 1Z3, Canada,
*For correspondence:
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16
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Szukala W, Lichawska-Cieslar A, Pietrzycka R, Kulecka M, Rumienczyk I, Mikula M, Chlebicka I, Konieczny P, Dziedzic K, Szepietowski JC, Fontemaggi G, Rys J, Jura J. Loss of epidermal MCPIP1 is associated with aggressive squamous cell carcinoma. J Exp Clin Cancer Res 2021; 40:391. [PMID: 34903245 PMCID: PMC8667402 DOI: 10.1186/s13046-021-02202-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Accepted: 11/28/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Squamous cell carcinoma (SCC) of the skin is a common form of nonmelanoma skin cancer. Monocyte chemotactic protein 1-induced protein 1 (MCPIP1), also called Regnase-1, is an RNase with anti-inflammatory properties. In normal human skin, its expression is predominantly restricted to the suprabasal epidermis. The main aim of this study was to investigate whether MCPIP1 is involved in the pathogenesis of SCC. METHODS We analyzed the distribution of MCPIP1 in skin biopsies of patients with actinic keratoses (AKs) and SCCs. To explore the mechanisms by which MCPIP1 may modulate tumorigenesis in vivo, we established a mouse model of chemically induced carcinogenesis. RESULTS Skin expression of MCPIP1 changed during the transformation of precancerous lesions into cutaneous SCC. MCPIP1 immunoreactivity was high in the thickened area of the AK epidermis but was predominantly restricted to keratin pearls in fully developed SCC lesions. Accelerated development of chemically induced skin tumors was observed in mice with loss of epidermal MCPIP1 (Mcpip1eKO). Papillomas that developed in Mcpip1eKO mouse skin were larger and characterized by elevated expression of markers typical of keratinocyte proliferation and tumor angiogenesis. This phenotype was correlated with enhanced expression of IL-6, IL-33 and transforming growth factor-beta (TGF-β). Moreover, our results demonstrated that in keratinocytes, the RNase MCPIP1 is essential for the negative regulation of genes encoding SCC antigens and matrix metallopeptidase 9. CONCLUSIONS Overall, our results provide a mechanistic understanding of how MCPIP1 contributes to the development of epidermoid carcinoma.
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Affiliation(s)
- Weronika Szukala
- Faculty of Biochemistry, Biophysics and Biotechnology, Department of General Biochemistry, Jagiellonian University, Gronostajowa 7, 30-387, Krakow, Poland
| | - Agata Lichawska-Cieslar
- Faculty of Biochemistry, Biophysics and Biotechnology, Department of General Biochemistry, Jagiellonian University, Gronostajowa 7, 30-387, Krakow, Poland.
| | - Roza Pietrzycka
- Faculty of Biochemistry, Biophysics and Biotechnology, Department of General Biochemistry, Jagiellonian University, Gronostajowa 7, 30-387, Krakow, Poland
| | - Maria Kulecka
- Medical Center for Postgraduate Education, Department of Gastroenterology, Hepatology and Clinical Oncology, Marymoncka 99/103, 01-813, Warsaw, Poland.,Maria Skłodowska-Curie National Research Institute of Oncology, Roentgena 5, 02-781, Warsaw, Poland
| | - Izabela Rumienczyk
- Maria Skłodowska-Curie National Research Institute of Oncology, Roentgena 5, 02-781, Warsaw, Poland
| | - Michal Mikula
- Maria Skłodowska-Curie National Research Institute of Oncology, Roentgena 5, 02-781, Warsaw, Poland
| | - Iwona Chlebicka
- Department of Dermatology, Venereology and Allergology, Wroclaw Medical University, Chalubinskiego 1, 50-368, Wroclaw, Poland
| | - Piotr Konieczny
- Faculty of Biochemistry, Biophysics and Biotechnology, Department of General Biochemistry, Jagiellonian University, Gronostajowa 7, 30-387, Krakow, Poland
| | - Katarzyna Dziedzic
- Faculty of Biochemistry, Biophysics and Biotechnology, Department of General Biochemistry, Jagiellonian University, Gronostajowa 7, 30-387, Krakow, Poland
| | - Jacek C Szepietowski
- Department of Dermatology, Venereology and Allergology, Wroclaw Medical University, Chalubinskiego 1, 50-368, Wroclaw, Poland
| | - Giulia Fontemaggi
- Oncogenomic and Epigenetic Unit, Regina Elena National Cancer Institute, Via Elio Chianesi 53, 00-144, Rome, Italy
| | - Janusz Rys
- Maria Skłodowska-Curie National Research Institute of Oncology, Garncarska 11, 31-115, Krakow, Poland
| | - Jolanta Jura
- Faculty of Biochemistry, Biophysics and Biotechnology, Department of General Biochemistry, Jagiellonian University, Gronostajowa 7, 30-387, Krakow, Poland.
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17
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Hoste E, Lecomte K, Annusver K, Vandamme N, Roels J, Maschalidi S, Verboom L, Vikkula HK, Sze M, Van Hove L, Verstaen K, Martens A, Hochepied T, Saeys Y, Ravichandran K, Kasper M, van Loo G. OTULIN maintains skin homeostasis by controlling keratinocyte death and stem cell identity. Nat Commun 2021; 12:5913. [PMID: 34625556 PMCID: PMC8501048 DOI: 10.1038/s41467-021-25944-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Accepted: 09/09/2021] [Indexed: 12/23/2022] Open
Abstract
OTULIN is a deubiquitinase that specifically cleaves linear ubiquitin chains. Here we demonstrate that the ablation of Otulin selectively in keratinocytes causes inflammatory skin lesions that develop into verrucous carcinomas. Genetic deletion of Tnfr1, knockin expression of kinase-inactive Ripk1 or keratinocyte-specific deletion of Fadd and Mlkl completely rescues mice with OTULIN deficiency from dermatitis and tumorigenesis, thereby identifying keratinocyte cell death as the driving force for inflammation. Single-cell RNA-sequencing comparing non-lesional and lesional skin reveals changes in epidermal stem cell identity in OTULIN-deficient keratinocytes prior to substantial immune cell infiltration. Keratinocytes lacking OTULIN display a type-1 interferon and IL-1β response signature, and genetic or pharmacologic inhibition of these cytokines partially inhibits skin inflammation. Finally, expression of a hypomorphic mutant Otulin allele, previously shown to cause OTULIN-related autoinflammatory syndrome in humans, induces a similar inflammatory phenotype, thus supporting the importance of OTULIN for restraining skin inflammation and maintaining immune homeostasis.
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Affiliation(s)
- Esther Hoste
- VIB Center for Inflammation Research, Ghent, Belgium.
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium.
- Cancer Research Institute Ghent (CRIG), Ghent, Belgium.
| | - Kim Lecomte
- VIB Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Karl Annusver
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden
| | - Niels Vandamme
- VIB Center for Inflammation Research, Ghent, Belgium
- Department of Applied Mathematics, Computer Sciences and Statistics, Ghent University, Ghent, Belgium
| | - Jana Roels
- VIB Center for Inflammation Research, Ghent, Belgium
- Department of Applied Mathematics, Computer Sciences and Statistics, Ghent University, Ghent, Belgium
| | - Sophia Maschalidi
- VIB Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Lien Verboom
- VIB Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Hanna-Kaisa Vikkula
- VIB Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Mozes Sze
- VIB Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Lisette Van Hove
- VIB Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Kevin Verstaen
- VIB Center for Inflammation Research, Ghent, Belgium
- Department of Applied Mathematics, Computer Sciences and Statistics, Ghent University, Ghent, Belgium
| | - Arne Martens
- VIB Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Tino Hochepied
- VIB Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Yvan Saeys
- VIB Center for Inflammation Research, Ghent, Belgium
- Department of Applied Mathematics, Computer Sciences and Statistics, Ghent University, Ghent, Belgium
| | - Kodi Ravichandran
- VIB Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
- Center for Cell Clearance and Department of Microbiology, Immunology and Cancer Biology, University of Virginia, Charlottesville, Virginia, USA
| | - Maria Kasper
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden
| | - Geert van Loo
- VIB Center for Inflammation Research, Ghent, Belgium.
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium.
- Cancer Research Institute Ghent (CRIG), Ghent, Belgium.
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18
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Schünke H, Göbel U, Dikic I, Pasparakis M. OTULIN inhibits RIPK1-mediated keratinocyte necroptosis to prevent skin inflammation in mice. Nat Commun 2021; 12:5912. [PMID: 34625557 PMCID: PMC8501112 DOI: 10.1038/s41467-021-25945-1] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Accepted: 09/09/2021] [Indexed: 12/29/2022] Open
Abstract
Linear ubiquitination regulates inflammatory and cell death signalling. Deficiency of the linear ubiquitin chain-specific deubiquitinase, OTULIN, causes OTULIN-related autoinflammatory syndrome (ORAS), a systemic inflammatory pathology affecting multiple organs including the skin. Here we show that mice with epidermis-specific OTULIN deficiency (OTULINE-KO) develop inflammatory skin lesions that are driven by TNFR1 signalling in keratinocytes and require RIPK1 kinase activity. OTULINE-KO mice lacking RIPK3 or MLKL have only very mild skin inflammation, implicating necroptosis as an important etiological mediator. Moreover, combined loss of RIPK3 and FADD fully prevents skin lesion development, showing that apoptosis also contributes to skin inflammation in a redundant function with necroptosis. Finally, MyD88 deficiency suppresses skin lesion development in OTULINE-KO mice, suggesting that toll-like receptor and/or IL-1 signalling are involved in mediating skin inflammation. Thus, OTULIN maintains homeostasis and prevents inflammation in the skin by inhibiting TNFR1-mediated, RIPK1 kinase activity-dependent keratinocyte death and primarily necroptosis.
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Affiliation(s)
- Hannah Schünke
- Institute for Genetics, University of Cologne, Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
| | - Ulrike Göbel
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
| | - Ivan Dikic
- Institute of Biochemistry II, Goethe-Universität Frankfurt am Main, Buchmann Institute for Molecular Life Sciences, Frankfurt, Germany
| | - Manolis Pasparakis
- Institute for Genetics, University of Cologne, Cologne, Germany.
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany.
- Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany.
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19
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Trela E, Lan Q, Myllymäki SM, Villeneuve C, Lindström R, Kumar V, Wickström SA, Mikkola ML. Cell influx and contractile actomyosin force drive mammary bud growth and invagination. J Cell Biol 2021; 220:e202008062. [PMID: 34042944 PMCID: PMC8164091 DOI: 10.1083/jcb.202008062] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 03/31/2021] [Accepted: 05/11/2021] [Indexed: 01/21/2023] Open
Abstract
The mammary gland develops from the surface ectoderm during embryogenesis and proceeds through morphological phases defined as placode, hillock, bud, and bulb stages followed by branching morphogenesis. During this early morphogenesis, the mammary bud undergoes an invagination process where the thickened bud initially protrudes above the surface epithelium and then transforms to a bulb and sinks into the underlying mesenchyme. The signaling pathways regulating the early morphogenetic steps have been identified to some extent, but the underlying cellular mechanisms remain ill defined. Here, we use 3D and 4D confocal microscopy to show that the early growth of the mammary rudiment is accomplished by migration-driven cell influx, with minor contributions of cell hypertrophy and proliferation. We delineate a hitherto undescribed invagination mechanism driven by thin, elongated keratinocytes-ring cells-that form a contractile rim around the mammary bud and likely exert force via the actomyosin network. Furthermore, we show that conditional deletion of nonmuscle myosin IIA (NMIIA) impairs invagination, resulting in abnormal mammary bud shape.
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MESH Headings
- Actomyosin/metabolism
- Animals
- Cell Movement
- Cell Proliferation
- Epithelial Cells/metabolism
- Epithelial Cells/ultrastructure
- Female
- Gene Expression Regulation, Developmental
- Gestational Age
- Hypertrophy
- Keratinocytes/metabolism
- Keratinocytes/ultrastructure
- Mammary Glands, Animal/embryology
- Mammary Glands, Animal/metabolism
- Mammary Glands, Animal/ultrastructure
- Mechanotransduction, Cellular
- Mice, Inbred C57BL
- Mice, Transgenic
- Microscopy, Confocal
- Microscopy, Electron, Scanning
- Microscopy, Fluorescence
- Morphogenesis
- Mice
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Affiliation(s)
- Ewelina Trela
- Cell and Tissue Dynamics Research Program, Institute of Biotechnology, Helsinki Institute of Life Science, University of Helsinki, Helsinki, Finland
| | - Qiang Lan
- Cell and Tissue Dynamics Research Program, Institute of Biotechnology, Helsinki Institute of Life Science, University of Helsinki, Helsinki, Finland
| | - Satu-Marja Myllymäki
- Cell and Tissue Dynamics Research Program, Institute of Biotechnology, Helsinki Institute of Life Science, University of Helsinki, Helsinki, Finland
| | - Clémentine Villeneuve
- Helsinki Institute of Life Science, Biomedicum Helsinki, University of Helsinki, Helsinki, Finland
- Stem Cells and Metabolism Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Riitta Lindström
- Cell and Tissue Dynamics Research Program, Institute of Biotechnology, Helsinki Institute of Life Science, University of Helsinki, Helsinki, Finland
| | - Vinod Kumar
- Cell and Tissue Dynamics Research Program, Institute of Biotechnology, Helsinki Institute of Life Science, University of Helsinki, Helsinki, Finland
| | - Sara A. Wickström
- Helsinki Institute of Life Science, Biomedicum Helsinki, University of Helsinki, Helsinki, Finland
- Stem Cells and Metabolism Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- Wihuri Research Institute, Biomedicum Helsinki, University of Helsinki, Helsinki, Finland
- Max Planck Institute for Biology of Ageing, Cologne, Germany
- Cologne Excellence Cluster for Stress Responses in Ageing-Associated Diseases, University of Cologne, Cologne, Germany
| | - Marja L. Mikkola
- Cell and Tissue Dynamics Research Program, Institute of Biotechnology, Helsinki Institute of Life Science, University of Helsinki, Helsinki, Finland
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20
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Geueke A, Mantellato G, Kuester F, Schettina P, Nelles M, Seeger JM, Kashkar H, Niemann C. The anti-apoptotic Bcl-2 protein regulates hair follicle stem cell function. EMBO Rep 2021; 22:e52301. [PMID: 34342114 PMCID: PMC8490995 DOI: 10.15252/embr.202052301] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 07/08/2021] [Accepted: 07/13/2021] [Indexed: 11/15/2022] Open
Abstract
Maintaining the architecture, size and composition of an intact stem cell (SC) compartment is crucial for tissue homeostasis and regeneration throughout life. In mammalian skin, elevated expression of the anti‐apoptotic Bcl‐2 protein has been reported in hair follicle (HF) bulge SCs (BSCs), but its impact on SC function is unknown. Here, we show that systemic exposure of mice to the Bcl‐2 antagonist ABT‐199/venetoclax leads to the selective loss of suprabasal BSCs (sbBSCs), thereby disrupting cyclic HF regeneration. RNAseq analysis shows that the pro‐apoptotic BH3‐only proteins BIM and Bmf are upregulated in sbBSCs, explaining their addiction to Bcl‐2 and the marked susceptibility to Bcl‐2 antagonism. In line with these observations, conditional knockout of Bcl‐2 in mouse epidermis elevates apoptosis in BSCs. In contrast, ectopic Bcl‐2 expression blocks apoptosis during HF regression, resulting in the accumulation of quiescent SCs and delaying HF growth in mice. Strikingly, Bcl‐2‐induced changes in size and composition of the HF bulge accelerate tumour formation. Our study identifies a niche‐instructive mechanism of Bcl‐2‐regulated apoptosis response that is required for SC homeostasis and tissue regeneration, and may suppress carcinogenesis.
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Affiliation(s)
- Anna Geueke
- Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany.,Centre of Biochemistry, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - Giada Mantellato
- Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany.,Centre of Biochemistry, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - Florian Kuester
- Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - Peter Schettina
- Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - Melanie Nelles
- Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - Jens Michael Seeger
- Institute for Medical Microbiology, Immunology and Hygiene (IMMIH), CECAD Research Center, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
| | - Hamid Kashkar
- Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany.,Institute for Medical Microbiology, Immunology and Hygiene (IMMIH), CECAD Research Center, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
| | - Catherin Niemann
- Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany.,Centre of Biochemistry, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
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21
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Tulotta C, Lefley DV, Moore CK, Amariutei AE, Spicer-Hadlington AR, Quayle LA, Hughes RO, Ahmed K, Cookson V, Evans CA, Vadakekolathu J, Heath P, Francis S, Pinteaux E, Pockley AG, Ottewell PD. IL-1B drives opposing responses in primary tumours and bone metastases; harnessing combination therapies to improve outcome in breast cancer. NPJ Breast Cancer 2021; 7:95. [PMID: 34290237 PMCID: PMC8295314 DOI: 10.1038/s41523-021-00305-w] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Accepted: 07/01/2021] [Indexed: 12/20/2022] Open
Abstract
Breast cancer bone metastasis is currently incurable, ~75% of patients with late-stage breast cancer develop disease recurrence in bone and available treatments are only palliative. We have previously shown that production of the pro-inflammatory cytokine interleukin-1B (IL-1B) by breast cancer cells drives bone metastasis in patients and in preclinical in vivo models. In the current study, we have investigated how IL-1B from tumour cells and the microenvironment interact to affect primary tumour growth and bone metastasis through regulation of the immune system, and whether targeting IL-1 driven changes to the immune response improves standard of care therapy for breast cancer bone metastasis. Using syngeneic IL-1B/IL1R1 knock out mouse models in combination with genetic manipulation of tumour cells to overexpress IL-1B/IL1R1, we found that IL-1B signalling elicited an opposite response in primary tumours compared with bone metastases. In primary tumours, IL-1B inhibited growth, by impairing the infiltration of innate immune cell subsets with potential anti-cancer functions but promoted enhanced tumour cell migration. In bone, IL-1B stimulated the development of osteolytic metastases. In syngeneic models of breast cancer, combining standard of care treatments (Doxorubicin and Zoledronic acid) with the IL-1 receptor antagonist Anakinra inhibited both primary tumour growth and metastasis. Anakinra had opposite effects on the immune response compared to standard of care treatment, and its anti-inflammatory signature was maintained in the combination therapy. These data suggest that targeting IL-1B signalling may provide a useful therapeutic approach to inhibit bone metastasis and improve efficacy of current treatments for breast cancer patients.
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Affiliation(s)
- Claudia Tulotta
- Department of Oncology and Metabolism, Weston Park Cancer Centre, University of Sheffield, Sheffield, UK
| | - Diane V Lefley
- Department of Oncology and Metabolism, Weston Park Cancer Centre, University of Sheffield, Sheffield, UK
| | - Charlotte K Moore
- Department of Oncology and Metabolism, Weston Park Cancer Centre, University of Sheffield, Sheffield, UK
| | - Ana E Amariutei
- Department of Oncology and Metabolism, Weston Park Cancer Centre, University of Sheffield, Sheffield, UK
| | - Amy R Spicer-Hadlington
- Department of Oncology and Metabolism, Weston Park Cancer Centre, University of Sheffield, Sheffield, UK
| | - Lewis A Quayle
- Department of Oncology and Metabolism, Weston Park Cancer Centre, University of Sheffield, Sheffield, UK
| | - Russell O Hughes
- Department of Oncology and Metabolism, Weston Park Cancer Centre, University of Sheffield, Sheffield, UK
| | - Khawla Ahmed
- Department of Oncology and Metabolism, Weston Park Cancer Centre, University of Sheffield, Sheffield, UK
| | - Victoria Cookson
- Department of Oncology and Metabolism, Weston Park Cancer Centre, University of Sheffield, Sheffield, UK
| | - Catherine A Evans
- Department of Oncology and Metabolism, Weston Park Cancer Centre, University of Sheffield, Sheffield, UK
| | - Jayakumar Vadakekolathu
- John van Geest Cancer Research Centre, School of Science and Technology, Nottingham Trent University, Nottingham, UK
| | - Paul Heath
- Sheffield Institute for Translational Neuroscience, University of Sheffield, Sheffield, UK
| | - Sheila Francis
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, UK
| | - Emmanuel Pinteaux
- Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | - A Graham Pockley
- John van Geest Cancer Research Centre, School of Science and Technology, Nottingham Trent University, Nottingham, UK
| | - Penelope D Ottewell
- Department of Oncology and Metabolism, Weston Park Cancer Centre, University of Sheffield, Sheffield, UK.
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22
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High proliferation and delamination during skin epidermal stratification. Nat Commun 2021; 12:3227. [PMID: 34050161 PMCID: PMC8163813 DOI: 10.1038/s41467-021-23386-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 04/20/2021] [Indexed: 12/29/2022] Open
Abstract
The development of complex stratified epithelial barriers in mammals is initiated from single-layered epithelia. How stratification is initiated and fueled are still open questions. Previous studies on skin epidermal stratification suggested a central role for perpendicular/asymmetric cell division orientation of the basal keratinocyte progenitors. Here, we use centrosomes, that organize the mitotic spindle, to test whether cell division orientation and stratification are linked. Genetically ablating centrosomes from the developing epidermis leads to the activation of the p53-, 53BP1- and USP28-dependent mitotic surveillance pathway causing a thinner epidermis and hair follicle arrest. The centrosome/p53-double mutant keratinocyte progenitors significantly alter their division orientation in the later stages without majorly affecting epidermal differentiation. Together with time-lapse imaging and tissue growth dynamics measurements, the data suggest that the first and major phase of epidermal development is boosted by high proliferation rates in both basal and suprabasally-committed keratinocytes as well as cell delamination, whereas the second phase maybe uncoupled from the division orientation of the basal progenitors. The data provide insights for tissue homeostasis and hyperproliferative diseases that may recapitulate developmental programs. How the developing skin epidermis is transformed from a simple single-layered epithelium to a complex and stratified barrier is still an open question. Here, the authors provide a model based on high proliferation and delamination of the keratinocyte progenitors that support the stratification process.
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23
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Wild J, Jung R, Knopp T, Efentakis P, Benaki D, Grill A, Wegner J, Molitor M, Garlapati V, Rakova N, Markó L, Marton A, Mikros E, Münzel T, Kossmann S, Rauh M, Nakano D, Kitada K, Luft F, Waisman A, Wenzel P, Titze J, Karbach S. Aestivation motifs explain hypertension and muscle mass loss in mice with psoriatic skin barrier defect. Acta Physiol (Oxf) 2021; 232:e13628. [PMID: 33590724 DOI: 10.1111/apha.13628] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Revised: 02/11/2021] [Accepted: 02/11/2021] [Indexed: 12/12/2022]
Abstract
AIM Recent evidence suggests that arterial hypertension could be alternatively explained as a physiological adaptation response to water shortage, termed aestivation, which relies on complex multi-organ metabolic adjustments to prevent dehydration. Here, we tested the hypothesis that chronic water loss across diseased skin leads to similar adaptive water conservation responses as observed in experimental renal failure or high salt diet. METHODS We studied mice with keratinocyte-specific overexpression of IL-17A which develop severe psoriasis-like skin disease. We measured transepidermal water loss and solute and water excretion in the urine. We quantified glomerular filtration rate (GFR) by intravital microscopy, and energy and nitrogen pathways by metabolomics. We measured skin blood flow and transepidermal water loss (TEWL) in conjunction with renal resistive indices and arterial blood pressure. RESULTS Psoriatic animals lost large amounts of water across their defective cutaneous epithelial barrier. Metabolic adaptive water conservation included mobilization of nitrogen and energy from muscle to increase organic osmolyte production, solute-driven maximal anti-diuresis at normal GFR, increased metanephrine and angiotensin 2 levels, and cutaneous vasoconstriction to limit TEWL. Heat exposure led to cutaneous vasodilation and blood pressure normalization without parallel changes in renal resistive index, albeit at the expense of further increased TEWL. CONCLUSION Severe cutaneous water loss predisposes psoriatic mice to lethal dehydration. In response to this dehydration stress, the mice activate aestivation-like water conservation motifs to maintain their body hydration status. The circulatory water conservation response explains their arterial hypertension. The nitrogen-dependency of the metabolic water conservation response explains their catabolic muscle wasting.
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Affiliation(s)
- Johannes Wild
- Center for Thrombosis and Hemostasis (CTH) Johannes Gutenberg‐University Mainz Mainz Germany
- Center for Cardiology Cardiology IJohannes Gutenberg‐University Mainz Mainz Germany
| | - Rebecca Jung
- Center for Thrombosis and Hemostasis (CTH) Johannes Gutenberg‐University Mainz Mainz Germany
| | - Tanja Knopp
- Center for Thrombosis and Hemostasis (CTH) Johannes Gutenberg‐University Mainz Mainz Germany
| | - Panagiotis Efentakis
- Center for Thrombosis and Hemostasis (CTH) Johannes Gutenberg‐University Mainz Mainz Germany
- Faculty of Pharmacy University of AthensPanepistimiopolis of Zographou Athens Greece
| | - Dimitra Benaki
- Faculty of Pharmacy University of AthensPanepistimiopolis of Zographou Athens Greece
| | - Alexandra Grill
- Center for Thrombosis and Hemostasis (CTH) Johannes Gutenberg‐University Mainz Mainz Germany
| | - Joanna Wegner
- Department of Dermatology Johannes Gutenberg‐University Mainz Mainz Germany
| | - Michael Molitor
- Center for Thrombosis and Hemostasis (CTH) Johannes Gutenberg‐University Mainz Mainz Germany
- Center for Cardiology Cardiology IJohannes Gutenberg‐University Mainz Mainz Germany
| | - Venkata Garlapati
- Center for Thrombosis and Hemostasis (CTH) Johannes Gutenberg‐University Mainz Mainz Germany
| | - Natalia Rakova
- Division of Nephrology and Hypertension University Clinic Erlangen Erlangen Germany
| | - Lajos Markó
- Experimental and Clinical Research CenterMax Delbrück Center for Molecular Medicine Berlin Germany
| | - Adriana Marton
- Programme in Cardiovascular and Metabolic DisordersDuke‐NUS Medical School Singapore Singapore
| | - Emmanuel Mikros
- Faculty of Pharmacy University of AthensPanepistimiopolis of Zographou Athens Greece
| | - Thomas Münzel
- Center for Cardiology Cardiology IJohannes Gutenberg‐University Mainz Mainz Germany
| | | | - Manfred Rauh
- Research Laboratory Division of Paediatrics University Clinic Erlangen Erlangen Germany
| | - Daisuke Nakano
- Department of Pharmacology Faculty of Medicine Kagawa University Miki‐cho Kagawa Japan
| | - Kento Kitada
- Programme in Cardiovascular and Metabolic DisordersDuke‐NUS Medical School Singapore Singapore
- Department of Pharmacology Faculty of Medicine Kagawa University Miki‐cho Kagawa Japan
| | - Friedrich Luft
- Experimental and Clinical Research CenterMax Delbrück Center for Molecular Medicine Berlin Germany
| | - Ari Waisman
- Institute for Molecular Medicine University Medical Center of Mainz Mainz Germany
| | - Philip Wenzel
- Center for Thrombosis and Hemostasis (CTH) Johannes Gutenberg‐University Mainz Mainz Germany
- Center for Cardiology Cardiology IJohannes Gutenberg‐University Mainz Mainz Germany
| | - Jens Titze
- Division of Nephrology and Hypertension University Clinic Erlangen Erlangen Germany
- Programme in Cardiovascular and Metabolic DisordersDuke‐NUS Medical School Singapore Singapore
- Division of Nephrology Duke University School of Medicine Durham NC USA
| | - Susanne Karbach
- Center for Thrombosis and Hemostasis (CTH) Johannes Gutenberg‐University Mainz Mainz Germany
- Center for Cardiology Cardiology IJohannes Gutenberg‐University Mainz Mainz Germany
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24
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Kumari S, Van TM, Preukschat D, Schuenke H, Basic M, Bleich A, Klein U, Pasparakis M. NF-κB inhibition in keratinocytes causes RIPK1-mediated necroptosis and skin inflammation. Life Sci Alliance 2021; 4:4/6/e202000956. [PMID: 33858959 PMCID: PMC8091601 DOI: 10.26508/lsa.202000956] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 04/01/2021] [Accepted: 04/01/2021] [Indexed: 11/24/2022] Open
Abstract
TNFR1 was found to cause skin inflammation in mice with epidermal keratinocyte-specific ablation of IKK2 or of both the NF-kB subunits RelA and cRel by triggering RIPK1-dependent, RIPK3-MLKL–mediated necroptosis of keratinocytes. Tumor necrosis factor receptor 1 (TNFR1) activates NF-κB–dependent pro-inflammatory gene expression, but also induces cell death by triggering apoptosis and necroptosis. Inhibition of inhibitor of NF-κB kinase (IKK)/NF-κB signaling in keratinocytes paradoxically unleashed spontaneous TNFR1-mediated skin inflammation in mice, but the underlying mechanisms remain poorly understood. Here, we show that TNFR1 causes skin inflammation in mice with epidermis-specific knockout of IKK2 by inducing receptor interacting protein kinase 1 (RIPK1)–dependent necroptosis, and to a lesser extent also apoptosis, of keratinocytes. Combined epidermis-specific ablation of the NF-κB subunits RelA and c-Rel also caused skin inflammation by inducing TNFR1-mediated keratinocyte necroptosis. Contrary to the currently established model that inhibition of NF-κB–dependent gene transcription causes RIPK1-independent cell death, keratinocyte necroptosis, and skin inflammation in mice with epidermis-specific RelA and c-Rel deficiency also depended on RIPK1 kinase activity. These results advance our understanding of the mechanisms regulating TNFR1-induced cell death and identify RIPK1-mediated necroptosis as a potent driver of skin inflammation.
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Affiliation(s)
- Snehlata Kumari
- Institute for Genetics, Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD) and Center for Molecular Medicine (CMMC), University of Cologne, Cologne, Germany
| | - Trieu-My Van
- Institute for Genetics, Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD) and Center for Molecular Medicine (CMMC), University of Cologne, Cologne, Germany
| | - Daniela Preukschat
- Institute for Genetics, Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD) and Center for Molecular Medicine (CMMC), University of Cologne, Cologne, Germany
| | - Hannah Schuenke
- Institute for Genetics, Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD) and Center for Molecular Medicine (CMMC), University of Cologne, Cologne, Germany
| | - Marijana Basic
- Institute for Laboratory Animal Science, Hannover Medical School, Hannover, Germany
| | - André Bleich
- Institute for Laboratory Animal Science, Hannover Medical School, Hannover, Germany
| | - Ulf Klein
- Division of Haematology and Immunology, Leeds Institute of Medical Research at St. James's, University of Leeds, Leeds, UK
| | - Manolis Pasparakis
- Institute for Genetics, Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD) and Center for Molecular Medicine (CMMC), University of Cologne, Cologne, Germany
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25
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Mechanochemical control of epidermal stem cell divisions by B-plexins. Nat Commun 2021; 12:1308. [PMID: 33637728 PMCID: PMC7910479 DOI: 10.1038/s41467-021-21513-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 01/28/2021] [Indexed: 01/31/2023] Open
Abstract
The precise spatiotemporal control of cell proliferation is key to the morphogenesis of epithelial tissues. Epithelial cell divisions lead to tissue crowding and local changes in force distribution, which in turn suppress the rate of cell divisions. However, the molecular mechanisms underlying this mechanical feedback are largely unclear. Here, we identify a critical requirement of B-plexin transmembrane receptors in the response to crowding-induced mechanical forces during embryonic skin development. Epidermal stem cells lacking B-plexins fail to sense mechanical compression, resulting in disinhibition of the transcriptional coactivator YAP, hyperproliferation, and tissue overgrowth. Mechanistically, we show that B-plexins mediate mechanoresponses to crowding through stabilization of adhesive cell junctions and lowering of cortical stiffness. Finally, we provide evidence that the B-plexin-dependent mechanochemical feedback is also pathophysiologically relevant to limit tumor growth in basal cell carcinoma, the most common type of skin cancer. Our data define a central role of B-plexins in mechanosensation to couple cell density and cell division in development and disease.
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26
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Holmes TR, Al Matouq J, Holmes M, Sioda N, Rudd JC, Bloom C, Nicola L, Palermo NY, Madson JG, Lovas S, Hansen LA. Targeting 14-3-3ε activates apoptotic signaling to prevent cutaneous squamous cell carcinoma. Carcinogenesis 2021; 42:232-242. [PMID: 32816038 PMCID: PMC7905839 DOI: 10.1093/carcin/bgaa091] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 08/06/2020] [Accepted: 08/13/2020] [Indexed: 12/12/2022] Open
Abstract
More than a million cases of cutaneous squamous cell carcinoma are diagnosed in the USA each year, and its incidence is increasing. Most of these malignancies arise from premalignant lesions, providing an opportunity for intervention before malignant progression. We previously documented how cytoplasmic mislocalization of CDC25A in premalignant and malignant skin cancers confers resistance to apoptotic cell death via a mechanism that depends on its interaction with 14-3-3ε. From these data, we hypothesized that 14-3-3ε overexpression drives skin tumor development and progression, such that targeting 14-3-3ε may be a useful strategy for skin cancer treatment. Like CDC25A, 14-3-3ε was overexpressed and mislocalized to the cytoplasm of both benign and malignant human skin cancer. Skin-targeted deletion of the 14-3-3ε gene reduced skin tumor development by 75% and blocked malignant progression. 14-3-3ε suppressed apoptosis through activation of Akt, leading to inhibition of BCL2 associated agonist of cell death and upregulation of Survivin. Using virtual tetrapeptide libraries, we developed a novel peptide that specifically blocked 14-3-3ε heterodimerization and thereby prevented its interaction with CDC25A. The peptide reduced prosurvival signaling, killed skin cancer cells and reduced skin tumor growth in xenograft. Normal skin keratinocytes were unaffected by inhibition or deletion of 14-3-3ε. Thus, targeting of 14-3-3ε dimerization is a promising strategy for the treatment of premalignant skin lesions.
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MESH Headings
- 14-3-3 Proteins/antagonists & inhibitors
- 14-3-3 Proteins/genetics
- 14-3-3 Proteins/metabolism
- 9,10-Dimethyl-1,2-benzanthracene/administration & dosage
- 9,10-Dimethyl-1,2-benzanthracene/toxicity
- Animals
- Antineoplastic Agents/pharmacology
- Antineoplastic Agents/therapeutic use
- Apoptosis/drug effects
- Carcinogens/administration & dosage
- Carcinogens/toxicity
- Carcinoma, Squamous Cell/drug therapy
- Carcinoma, Squamous Cell/pathology
- Cell Line, Tumor
- Cytoplasm/drug effects
- Cytoplasm/metabolism
- Female
- Humans
- Keratinocytes
- Male
- Mice
- Mice, Knockout
- Neoplasms, Experimental/chemically induced
- Neoplasms, Experimental/drug therapy
- Neoplasms, Experimental/pathology
- Protein Multimerization/drug effects
- Skin Neoplasms/drug therapy
- Skin Neoplasms/pathology
- Tetradecanoylphorbol Acetate/administration & dosage
- Tetradecanoylphorbol Acetate/analogs & derivatives
- Tetradecanoylphorbol Acetate/toxicity
- Xenograft Model Antitumor Assays
- cdc25 Phosphatases/metabolism
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Affiliation(s)
- Thomas R Holmes
- Department of Biomedical Sciences, Creighton University School of Medicine, Omaha, NE, USA
| | - Jenan Al Matouq
- Department of Biomedical Sciences, Creighton University School of Medicine, Omaha, NE, USA
| | - Matti Holmes
- Department of Biomedical Sciences, Creighton University School of Medicine, Omaha, NE, USA
| | - Natasha Sioda
- Department of Biomedical Sciences, Creighton University School of Medicine, Omaha, NE, USA
| | - Justin C Rudd
- Department of Biomedical Sciences, Creighton University School of Medicine, Omaha, NE, USA
| | - Celia Bloom
- Department of Biomedical Sciences, Creighton University School of Medicine, Omaha, NE, USA
| | - Lauren Nicola
- Department of Biomedical Sciences, Creighton University School of Medicine, Omaha, NE, USA
| | - Nicholas Y Palermo
- Holland Computing Center, University of Nebraska–Lincoln, Lincoln, NE, USA
| | | | - Sándor Lovas
- Department of Biomedical Sciences, Creighton University School of Medicine, Omaha, NE, USA
| | - Laura A Hansen
- Department of Biomedical Sciences, Creighton University School of Medicine, Omaha, NE, USA
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27
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Epithelial loss of mitochondrial oxidative phosphorylation leads to disturbed enamel and impaired dentin matrix formation in postnatal developed mouse incisor. Sci Rep 2020; 10:22037. [PMID: 33328493 PMCID: PMC7744519 DOI: 10.1038/s41598-020-77954-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Accepted: 11/12/2020] [Indexed: 12/03/2022] Open
Abstract
The formation of dentin and enamel matrix depends on reciprocal interactions between epithelial-mesenchymal cells. To assess the role of mitochondrial function in amelogenesis and dentinogenesis, we studied postnatal incisor development in K320E-TwinkleEpi mice. In these mice, a loss of mitochondrial DNA (mtDNA), followed by a severe defect in the oxidative phosphorylation system is induced specifically in Keratin 14 (K14+) expressing epithelial cells. Histochemical staining showed severe reduction of cytochrome c oxidase activity only in K14+ epithelial cells. In mutant incisors, H&E staining showed severe defects in the ameloblasts, in the epithelial cells of the stratum intermedium and the papillary cell layer, but also a disturbed odontoblast layer. The lack of amelogenin in the enamel matrix of K320E-TwinkleEpi mice indicated that defective ameloblasts are not able to form extracellular enamel matrix proteins. In comparison to control incisors, von Kossa staining showed enamel biomineralization defects and dentin matrix impairment. In mutant incisor, TUNEL staining and ultrastructural analyses revealed differentiation defects, while in hair follicle cells apoptosis is prevalent. We concluded that mitochondrial oxidative phosphorylation in epithelial cells of the developed incisor is required for Ca2+ homeostasis to regulate the formation of enamel matrix and induce the differentiation of ectomesenchymal cells into odontoblasts.
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28
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Stafford N, Assrafally F, Prehar S, Zi M, De Morais AM, Maqsood A, Cartwright EJ, Mueller W, Oceandy D. Signaling via the Interleukin-10 Receptor Attenuates Cardiac Hypertrophy in Mice During Pressure Overload, but not Isoproterenol Infusion. Front Pharmacol 2020; 11:559220. [PMID: 33192505 PMCID: PMC7662881 DOI: 10.3389/fphar.2020.559220] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Accepted: 10/06/2020] [Indexed: 12/23/2022] Open
Abstract
Inflammation plays a key role during cardiac hypertrophy and the development of heart failure. Interleukin-10 (IL-10) is a major anti-inflammatory cytokine that is expressed in the heart and may play a crucial role in cardiac remodeling. Based on the evidence that IL-10 potentially reduces pathological hypertrophy, it was hypothesized that signaling via the IL-10 receptor (IL10R) in the heart produces a protective role in reducing cardiac hypertrophy. The aim of this study was to investigate the effects of the ablation of Il-10-r1 gene during pathological cardiac hypertrophy in mice. We found that IL-10R1 gene silencing in cultured cardiomyocytes diminished the anti-hypertrophic effect of Il-10 in TNF-α induced hypertrophy model. We then analyzed mice deficient in the Il-10-r1 gene (IL-10R1-/- mice) and subjected them to transverse aortic constriction or isoproterenol infusion to induce pathological hypertrophy. In response to transverse aortic constriction for 2 weeks, IL-10R1-/- mice displayed a significant increase in the hypertrophic response as indicated by heart weight/body weight ratio, which was accompanied by significant increases in cardiomyocyte surface area and interstitial fibrosis. In contrast, there was no difference in hypertrophic response to isoproterenol infusion (10 days) between the knockout and control groups. Analysis of cardiac function using echocardiography and invasive hemodynamic studies did not show any difference between the WT and IL-10R1-/- groups, most likely due to the short term nature of the models. In conclusion, our data shows that signaling via the IL-10 receptor may produce protective effects against pressure overload-induced hypertrophy but not against β-adrenergic stimuli in the heart. Our data supports previous evidence that signaling modulated by IL-10 and its receptor may become a potential target to control pathological cardiac hypertrophy.
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Affiliation(s)
- Nicholas Stafford
- Division of Cardiovascular Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom.,Manchester Academic Health Science Centre, The University of Manchester, Manchester, United Kingdom
| | - Farryah Assrafally
- Division of Cardiovascular Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom.,Manchester Academic Health Science Centre, The University of Manchester, Manchester, United Kingdom
| | - Sukhpal Prehar
- Division of Cardiovascular Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom.,Manchester Academic Health Science Centre, The University of Manchester, Manchester, United Kingdom
| | - Min Zi
- Division of Cardiovascular Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom.,Manchester Academic Health Science Centre, The University of Manchester, Manchester, United Kingdom
| | - Ana M De Morais
- Division of Cardiovascular Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom.,Manchester Academic Health Science Centre, The University of Manchester, Manchester, United Kingdom
| | - Arfa Maqsood
- Division of Cardiovascular Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom.,Manchester Academic Health Science Centre, The University of Manchester, Manchester, United Kingdom
| | - Elizabeth J Cartwright
- Division of Cardiovascular Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom.,Manchester Academic Health Science Centre, The University of Manchester, Manchester, United Kingdom
| | - Werner Mueller
- School of Biological Sciences, The University of Manchester, Manchester, United Kingdom
| | - Delvac Oceandy
- Division of Cardiovascular Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom.,Manchester Academic Health Science Centre, The University of Manchester, Manchester, United Kingdom
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29
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Kim CS, Ding X, Allmeroth K, Biggs LC, Kolenc OI, L'Hoest N, Chacón-Martínez CA, Edlich-Muth C, Giavalisco P, Quinn KP, Denzel MS, Eming SA, Wickström SA. Glutamine Metabolism Controls Stem Cell Fate Reversibility and Long-Term Maintenance in the Hair Follicle. Cell Metab 2020; 32:629-642.e8. [PMID: 32905798 DOI: 10.1016/j.cmet.2020.08.011] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 06/30/2020] [Accepted: 08/13/2020] [Indexed: 12/12/2022]
Abstract
Stem cells reside in specialized niches that are critical for their function. Upon activation, hair follicle stem cells (HFSCs) exit their niche to generate the outer root sheath (ORS), but a subset of ORS progeny returns to the niche to resume an SC state. Mechanisms of this fate reversibility are unclear. We show that the ability of ORS cells to return to the SC state requires suppression of a metabolic switch from glycolysis to oxidative phosphorylation and glutamine metabolism that occurs during early HFSC lineage progression. HFSC fate reversibility and glutamine metabolism are regulated by the mammalian target of rapamycin complex 2 (mTORC2)-Akt signaling axis within the niche. Deletion of mTORC2 results in a failure to re-establish the HFSC niche, defective hair follicle regeneration, and compromised long-term maintenance of HFSCs. These findings highlight the importance of spatiotemporal control of SC metabolic states in organ homeostasis.
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Affiliation(s)
- Christine S Kim
- Max Planck Institute for Biology of Ageing, Cologne, Germany; Cluster of Excellence Cellular Stress Responses in Ageing-associated Diseases (CECAD), University of Cologne, Cologne, Germany
| | - Xiaolei Ding
- Department of Dermatology, University of Cologne, Cologne, Germany
| | - Kira Allmeroth
- Max Planck Institute for Biology of Ageing, Cologne, Germany; Cluster of Excellence Cellular Stress Responses in Ageing-associated Diseases (CECAD), University of Cologne, Cologne, Germany
| | - Leah C Biggs
- Helsinki Institute of Life Science, Biomedicum Helsinki, University of Helsinki, Helsinki, Finland; Wihuri Research Institute, Biomedicum Helsinki, University of Helsinki, Helsinki, Finland; Stem Cells and Metabolism Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Olivia I Kolenc
- Department of Biomedical Engineering, University of Arkansas, Fayetteville, AR, USA
| | - Nina L'Hoest
- Max Planck Institute for Biology of Ageing, Cologne, Germany; Cluster of Excellence Cellular Stress Responses in Ageing-associated Diseases (CECAD), University of Cologne, Cologne, Germany
| | - Carlos Andrés Chacón-Martínez
- Max Planck Institute for Biology of Ageing, Cologne, Germany; Cluster of Excellence Cellular Stress Responses in Ageing-associated Diseases (CECAD), University of Cologne, Cologne, Germany
| | | | | | - Kyle P Quinn
- Department of Biomedical Engineering, University of Arkansas, Fayetteville, AR, USA
| | - Martin S Denzel
- Max Planck Institute for Biology of Ageing, Cologne, Germany; Cluster of Excellence Cellular Stress Responses in Ageing-associated Diseases (CECAD), University of Cologne, Cologne, Germany
| | - Sabine A Eming
- Cluster of Excellence Cellular Stress Responses in Ageing-associated Diseases (CECAD), University of Cologne, Cologne, Germany; Department of Dermatology, University of Cologne, Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany; Institute of Zoology, Developmental Biology Unit, University of Cologne, Cologne, Germany.
| | - Sara A Wickström
- Max Planck Institute for Biology of Ageing, Cologne, Germany; Cluster of Excellence Cellular Stress Responses in Ageing-associated Diseases (CECAD), University of Cologne, Cologne, Germany; Helsinki Institute of Life Science, Biomedicum Helsinki, University of Helsinki, Helsinki, Finland; Wihuri Research Institute, Biomedicum Helsinki, University of Helsinki, Helsinki, Finland; Stem Cells and Metabolism Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland.
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30
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Köhler A, Mörgelin M, Gebauer JM, Öcal S, Imhof T, Koch M, Nagata K, Paulsson M, Aumailley M, Baumann U, Zaucke F, Sengle G. New specific HSP47 functions in collagen subfamily chaperoning. FASEB J 2020; 34:12040-12052. [DOI: 10.1096/fj.202000570r] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 05/29/2020] [Accepted: 06/26/2020] [Indexed: 11/11/2022]
Affiliation(s)
- Anna Köhler
- Faculty of Medicine Center for Biochemistry University of Cologne Cologne Germany
| | - Matthias Mörgelin
- Division of Infection Medicine Department of Clinical Sciences Lund University Lund Sweden
- Colzyx AB Lund Sweden
| | - Jan M. Gebauer
- Faculty of Mathematics and Natural Sciences Institute of Biochemistry University of Cologne Cologne Germany
| | - Sinan Öcal
- Faculty of Mathematics and Natural Sciences Institute of Biochemistry University of Cologne Cologne Germany
| | - Thomas Imhof
- Faculty of Medicine Center for Biochemistry University of Cologne Cologne Germany
- Medical Faculty Institute for Dental Research and Oral Musculoskeletal Biology University of Cologne Cologne Germany
| | - Manuel Koch
- Medical Faculty Institute for Dental Research and Oral Musculoskeletal Biology University of Cologne Cologne Germany
| | - Kazuhiro Nagata
- Institute for Protein Dynamics Kyoto Sangyo University Kyoto Japan
| | - Mats Paulsson
- Faculty of Medicine Center for Biochemistry University of Cologne Cologne Germany
- Cologne Center for Musculoskeletal Biomechanics (CCMB) Cologne Germany
- Cluster of Excellence Cellular Stress Responses in Aging‐Associated Diseases (CECAD) University of Cologne Cologne Germany
- Center for Molecular Medicine Cologne (CMMC) Cologne Germany
| | - Monique Aumailley
- Faculty of Medicine Center for Biochemistry University of Cologne Cologne Germany
| | - Ulrich Baumann
- Faculty of Mathematics and Natural Sciences Institute of Biochemistry University of Cologne Cologne Germany
| | - Frank Zaucke
- Dr. Rolf M. Schwiete Research Unit for Osteoarthritis Orthopedic University Hospital, Friedrichsheim gGmbh Frankfurt/Main Germany
| | - Gerhard Sengle
- Faculty of Medicine Center for Biochemistry University of Cologne Cologne Germany
- Cologne Center for Musculoskeletal Biomechanics (CCMB) Cologne Germany
- Center for Molecular Medicine Cologne (CMMC) Cologne Germany
- Department of Pediatrics and Adolescent Medicine Faculty of Medicine University Hospital CologneUniversity of Cologne Cologne Germany
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31
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Pinteaux E, Abdulaal WH, Mufazalov IA, Humphreys NE, Simonsen-Jackson M, Francis S, Müller W, Waisman A. Cell-specific conditional deletion of interleukin-1 (IL-1) ligands and its receptors: a new toolbox to study the role of IL-1 in health and disease. J Mol Med (Berl) 2020; 98:923-930. [PMID: 32468079 PMCID: PMC7343756 DOI: 10.1007/s00109-020-01928-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 05/15/2020] [Accepted: 05/20/2020] [Indexed: 01/08/2023]
Abstract
The pro-inflammatory cytokine interleukin-1 (IL-1) plays a key role in many physiological processes and during the inflammatory and immune response to most common diseases. IL-1 exists as two agonists, IL-1α and IL-1β that bind to the only signaling IL-1 type 1 receptor (IL-1R1), while a second decoy IL-1 type 2 receptor (IL-1R2) binds both forms of IL-1 without inducing cell signaling. The field of immunology and inflammation research has, over the past 35 years, unraveled many mechanisms of IL-1 actions, through in vitro manipulation of the IL-1 system or by using genetically engineered mouse models that lack either member of the IL-1 family in ubiquitous constitutive manner. However, the limitation of global mouse knockout technology has significantly hampered our understanding of the precise mechanisms of IL-1 actions in animal models of disease. Here we report and review the recent generation of new conditional mouse mutants in which exons of Il1a, Il1b, Il1r1, and Il1r2 genes flanked by loxP sites (fl/fl) can be deleted in cell-/tissue-specific constitutive or inducible manner by Cre recombinase expression. Hence, IL-1αfl/fl, IL-1βfl/fl, IL-1R1fl/fl, and IL-1R2fl/fl mice constitute a new toolbox that will provide a step change in our understanding of the cell-specific role of IL-1 and its receptor in health and disease and the potential development of targeted IL-1 therapies.
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Affiliation(s)
- Emmanuel Pinteaux
- Faculty of Biology, Medicine and Health, University of Manchester, AV Hill Building, Oxford Road, Manchester, M13 9PT, United Kingdom.
| | - Wesam H Abdulaal
- Faculty of Biology, Medicine and Health, University of Manchester, AV Hill Building, Oxford Road, Manchester, M13 9PT, United Kingdom
- Biochemistry Department, Faculty of Sciences, King Abdulaziz University, P.O.BOX 80203, Jeddah, 21589, Kingdom of Saudi Arabia
| | - Ilgiz A Mufazalov
- Institute for Molecular Medicine, University Medical Center of the Johannes Gutenberg-University of Mainz, Langenbeckstrasse 1, Building 308A, 55131, Mainz, Germany
| | - Neil E Humphreys
- Faculty of Biology, Medicine and Health, University of Manchester, AV Hill Building, Oxford Road, Manchester, M13 9PT, United Kingdom
- Epigenetics and Neurobiology Unit, Adriano Buzzati-Traverso Campus, EMBL-Rome, Via Ramarini, 3200015, Monterotondo, RM, Italy
| | - Maj Simonsen-Jackson
- Faculty of Biology, Medicine and Health, University of Manchester, AV Hill Building, Oxford Road, Manchester, M13 9PT, United Kingdom
| | - Sheila Francis
- Department of Infection, Immunity & Cardiovascular Disease, Medical School, University of Sheffield, S10 2RX, Sheffield, United Kingdom
| | - Werner Müller
- Faculty of Biology, Medicine and Health, University of Manchester, AV Hill Building, Oxford Road, Manchester, M13 9PT, United Kingdom
| | - Ari Waisman
- Institute for Molecular Medicine, University Medical Center of the Johannes Gutenberg-University of Mainz, Langenbeckstrasse 1, Building 308A, 55131, Mainz, Germany
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32
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Z-nucleic-acid sensing triggers ZBP1-dependent necroptosis and inflammation. Nature 2020; 580:391-395. [PMID: 32296175 PMCID: PMC7279955 DOI: 10.1038/s41586-020-2129-8] [Citation(s) in RCA: 247] [Impact Index Per Article: 61.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Accepted: 02/18/2020] [Indexed: 12/11/2022]
Abstract
Z-DNA and Z-RNA are left-handed double helix nucleic acid structures with poorly understood biological function1–3. Z-DNA binding protein 1 (ZBP1, also known as DAI or DLM-1) is a nucleic acid sensor containing two Zα domains that bind Z-DNA4,5 and Z-RNA6–8. ZBP1 mediates host-defence against certain viruses6,7,9–14 by sensing viral nucleic acids6,7,10. RIPK1 deficiency or mutation of its RIP homotypic interaction motif (RHIM) triggers ZBP1-dependent necroptosis and inflammation in mice15,16, however, the mechanisms inducing ZBP1 activation in the absence of viral infection remain elusive. Here we show that Zα-dependent sensing of endogenous ligands induces ZBP1-mediated perinatal lethality in mice expressing RIPK1 with mutated RHIM (Ripk1mR/mR) and skin inflammation in mice with epidermis-specific RIPK1 deficiency (RIPK1E-KO), as well as colitis in mice with intestinal epithelial-specific FADD deficiency (FADDIEC-KO). Consistently, functional Zα domains were required for ZBP1-induced necroptosis in fibroblasts that express RIPK1 with mutated RHIM or were treated with caspase inhibitors. Moreover, inhibition of nuclear export triggered Zα-dependent activation of RIPK3 in the nucleus resulting in cell death, suggesting that ZBP1 may recognise Z-form nucleic acids (Z-NA) in the nucleus. We found that ZBP1 constitutively bound cellular double stranded RNA (dsRNA) in a Zα-dependent manner. Furthermore, endogenous retroelement (ERE)-derived complementary reads were detected in epidermal RNA, suggesting that ERE-derived dsRNA may act as Zα domain ligand triggering ZBP1 activation. Collectively, our results provide evidence that sensing of endogenous Z-NA by ZBP1 triggers RIPK3-dependent necroptosis and inflammation, which could underlie the development of chronic inflammatory conditions particularly in patients with mutations in the RIPK1 and CASPASE-8 genes17–20.
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33
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Murine Epidermal Ceramide Synthase 4 Is a Key Regulator of Skin Barrier Homeostasis. J Invest Dermatol 2020; 140:1927-1937.e5. [PMID: 32092351 DOI: 10.1016/j.jid.2020.02.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Revised: 02/03/2020] [Accepted: 02/04/2020] [Indexed: 11/21/2022]
Abstract
Epidermal barrier dysfunction is associated with a wide range of highly prevalent inflammatory skin diseases. However, the molecular processes that drive epidermal barrier maintenance are still largely unknown. Here, using quantitative proteomics, lipidomics, and mouse genetics, we characterize epidermal barrier maintenance versus a newly established barrier and functionally identify differential ceramide synthase 4 protein expression as one key difference. We show that epidermal loss of ceramide synthase 4 first disturbs epidermal lipid metabolism and adult epidermal barrier function, ultimately resulting in chronic skin barrier disease characterized by acanthosis, hyperkeratosis, and immune cell accumulation. Importantly, prolonged barrier dysfunction induced by loss of ceramide synthase 4 induced a barrier repair response that largely recapitulates molecular programs of barrier establishment. Collectively, this study provides an unbiased temporal proteomic characterization of barrier maintenance and disturbed homeostasis and shows that lipid homeostasis is essential to maintain adult skin barrier function to prevent disease.
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34
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Konieczny P, Lichawska-Cieslar A, Kwiecinska P, Cichy J, Pietrzycka R, Szukala W, Declercq W, Devos M, Paziewska A, Rumienczyk I, Kulecka M, Mikula M, Fu M, Borowczyk J, Santamaria-Babí LF, Jura J. Keratinocyte-specific ablation of Mcpip1 impairs skin integrity and promotes local and systemic inflammation. J Mol Med (Berl) 2019; 97:1669-1684. [PMID: 31786670 DOI: 10.1007/s00109-019-01853-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 10/08/2019] [Accepted: 11/07/2019] [Indexed: 12/13/2022]
Abstract
MCPIP1 (Regnase-1, encoded by the ZC3H12A gene) regulates the mRNA stability of several inflammatory cytokines. Due to the critical role of this RNA endonuclease in the suppression of inflammation, Mcpip1 deficiency in mice leads to the development of postnatal multiorgan inflammation and premature death. Here, we generated mice with conditional deletion of Mcpip1 in the epidermis (Mcpip1EKO). Mcpip1 loss in keratinocytes resulted in the upregulated expression of transcripts encoding factors related to inflammation and keratinocyte differentiation, such as IL-36α/γ cytokines, S100a8/a9 antibacterial peptides, and Sprr2d/2h proteins. Upon aging, the Mcpip1EKO mice showed impaired skin integrity that led to the progressive development of spontaneous skin pathology and systemic inflammation. Furthermore, we found that the lack of epidermal Mcpip1 expression impaired the balance of keratinocyte proliferation and differentiation. Overall, we provide evidence that keratinocyte-specific Mcpip1 activity is crucial for the maintenance of skin integrity as well as for the prevention of excessive local and systemic inflammation. KEY MESSAGES: Loss of murine epidermal Mcpip1 upregulates transcripts related to inflammation and keratinocyte differentiation. Keratinocyte Mcpip1 function is essential to maintain the integrity of skin in adult mice. Ablation of Mcpip1 in mouse epidermis leads to the development of local and systemic inflammation.
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Affiliation(s)
- Piotr Konieczny
- Department of General Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387, Krakow, Poland
| | - Agata Lichawska-Cieslar
- Department of General Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387, Krakow, Poland
| | - Patrycja Kwiecinska
- Department of Immunology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387, Krakow, Poland
| | - Joanna Cichy
- Department of Immunology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387, Krakow, Poland
| | - Roza Pietrzycka
- Department of General Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387, Krakow, Poland
| | - Weronika Szukala
- Department of General Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387, Krakow, Poland
| | - Wim Declercq
- Molecular Signaling and Cell Death Unit, VIB Center for Inflammation Research Center, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Technologiepark 71, 9052, Ghent, Belgium
| | - Michael Devos
- Molecular Signaling and Cell Death Unit, VIB Center for Inflammation Research Center, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Technologiepark 71, 9052, Ghent, Belgium
| | - Agnieszka Paziewska
- Department of Gastroenterology, Hepatology and Clinical Oncology, Medical Center for Postgraduate Education, Marymoncka 99/103, 01-813, Warsaw, Poland
| | - Izabela Rumienczyk
- Department of Gastroenterology, Hepatology and Clinical Oncology, Medical Center for Postgraduate Education, Marymoncka 99/103, 01-813, Warsaw, Poland
| | - Maria Kulecka
- Department of Gastroenterology, Hepatology and Clinical Oncology, Medical Center for Postgraduate Education, Marymoncka 99/103, 01-813, Warsaw, Poland
| | - Michal Mikula
- Department of Genetics, Maria Sklodowska-Curie Memorial Cancer Center and Institute of Oncology, Roentgena 5, 02-781, Warsaw, Poland
| | - Mingui Fu
- Department of Biomedical Science and Shock/Trauma Research Center, School of Medicine, University of Missouri-Kansas City, 5100 Rockhill Rd, Kansas City, MO, 64110, USA
| | - Julia Borowczyk
- Department of Cell Biology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387, Krakow, Poland.,Current address: Department of Pathology and Immunology, Faculty of Medicine, University of Geneva, Rue Gabrielle Perret-Gentil 4, 1211, Geneva, Switzerland
| | - Luis F Santamaria-Babí
- Translational Immunology, Department of Cellular Biology, Physiology and Immunology, Faculty of Biology, University de Barcelona, Gran Via de les Corts Catalanes 585, 08007, Barcelona, Spain
| | - Jolanta Jura
- Department of General Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387, Krakow, Poland.
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Fritsch M, Günther SD, Schwarzer R, Albert MC, Schorn F, Werthenbach JP, Schiffmann LM, Stair N, Stocks H, Seeger JM, Lamkanfi M, Krönke M, Pasparakis M, Kashkar H. Caspase-8 is the molecular switch for apoptosis, necroptosis and pyroptosis. Nature 2019; 575:683-687. [PMID: 31748744 DOI: 10.1038/s41586-019-1770-6] [Citation(s) in RCA: 541] [Impact Index Per Article: 108.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Accepted: 10/15/2019] [Indexed: 11/09/2022]
Abstract
Caspase-8 is the initiator caspase of extrinsic apoptosis1,2 and inhibits necroptosis mediated by RIPK3 and MLKL. Accordingly, caspase-8 deficiency in mice causes embryonic lethality3, which can be rescued by deletion of either Ripk3 or Mlkl4-6. Here we show that the expression of enzymatically inactive CASP8(C362S) causes embryonic lethality in mice by inducing necroptosis and pyroptosis. Similar to Casp8-/- mice3,7, Casp8C362S/C362S mouse embryos died after endothelial cell necroptosis leading to cardiovascular defects. MLKL deficiency rescued the cardiovascular phenotype but unexpectedly caused perinatal lethality in Casp8C362S/C362S mice, indicating that CASP8(C362S) causes necroptosis-independent death at later stages of embryonic development. Specific loss of the catalytic activity of caspase-8 in intestinal epithelial cells induced intestinal inflammation similar to intestinal epithelial cell-specific Casp8 knockout mice8. Inhibition of necroptosis by additional deletion of Mlkl severely aggravated intestinal inflammation and caused premature lethality in Mlkl knockout mice with specific loss of caspase-8 catalytic activity in intestinal epithelial cells. Expression of CASP8(C362S) triggered the formation of ASC specks, activation of caspase-1 and secretion of IL-1β. Both embryonic lethality and premature death were completely rescued in Casp8C362S/C362SMlkl-/-Asc-/- or Casp8C362S/C362SMlkl-/-Casp1-/- mice, indicating that the activation of the inflammasome promotes CASP8(C362S)-mediated tissue pathology when necroptosis is blocked. Therefore, caspase-8 represents the molecular switch that controls apoptosis, necroptosis and pyroptosis, and prevents tissue damage during embryonic development and adulthood.
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Affiliation(s)
- Melanie Fritsch
- Institute for Medical Microbiology, Immunology and Hygiene (IMMIH), CECAD Research Center, University of Cologne, Cologne, Germany
| | - Saskia D Günther
- Institute for Medical Microbiology, Immunology and Hygiene (IMMIH), CECAD Research Center, University of Cologne, Cologne, Germany
| | - Robin Schwarzer
- Institute for Genetics, CECAD Research Center, University of Cologne, Cologne, Germany
| | - Marie-Christine Albert
- Institute for Medical Microbiology, Immunology and Hygiene (IMMIH), CECAD Research Center, University of Cologne, Cologne, Germany
| | - Fabian Schorn
- Institute for Medical Microbiology, Immunology and Hygiene (IMMIH), CECAD Research Center, University of Cologne, Cologne, Germany
| | - J Paul Werthenbach
- Institute for Medical Microbiology, Immunology and Hygiene (IMMIH), CECAD Research Center, University of Cologne, Cologne, Germany
| | - Lars M Schiffmann
- Institute for Medical Microbiology, Immunology and Hygiene (IMMIH), CECAD Research Center, University of Cologne, Cologne, Germany.,Department of General, Visceral and Cancer Surgery, University of Cologne, Cologne, Germany
| | - Neil Stair
- Institute for Medical Microbiology, Immunology and Hygiene (IMMIH), CECAD Research Center, University of Cologne, Cologne, Germany.,Institute for Genetics, CECAD Research Center, University of Cologne, Cologne, Germany
| | - Hannah Stocks
- Institute for Medical Microbiology, Immunology and Hygiene (IMMIH), CECAD Research Center, University of Cologne, Cologne, Germany
| | - Jens M Seeger
- Institute for Medical Microbiology, Immunology and Hygiene (IMMIH), CECAD Research Center, University of Cologne, Cologne, Germany
| | - Mohamed Lamkanfi
- Department of Internal Medicine and Paediatrics, Ghent University, Ghent, Belgium.,VIB Center for Inflammation Research, Ghent, Belgium
| | - Martin Krönke
- Institute for Medical Microbiology, Immunology and Hygiene (IMMIH), CECAD Research Center, University of Cologne, Cologne, Germany
| | - Manolis Pasparakis
- Institute for Genetics, CECAD Research Center, University of Cologne, Cologne, Germany.,Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany
| | - Hamid Kashkar
- Institute for Medical Microbiology, Immunology and Hygiene (IMMIH), CECAD Research Center, University of Cologne, Cologne, Germany. .,Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany.
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The RIPK4-IRF6 signalling axis safeguards epidermal differentiation and barrier function. Nature 2019; 574:249-253. [PMID: 31578523 DOI: 10.1038/s41586-019-1615-3] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 08/29/2019] [Indexed: 01/30/2023]
Abstract
The integrity of the mammalian epidermis depends on a balance of proliferation and differentiation in the resident population of stem cells1. The kinase RIPK4 and the transcription factor IRF6 are mutated in severe developmental syndromes in humans, and mice lacking these genes display epidermal hyperproliferation and soft-tissue fusions that result in neonatal lethality2-5. Our understanding of how these genes control epidermal differentiation is incomplete. Here we show that the role of RIPK4 in mouse development requires its kinase activity; that RIPK4 and IRF6 expressed in the epidermis regulate the same biological processes; and that the phosphorylation of IRF6 at Ser413 and Ser424 primes IRF6 for activation. Using RNA sequencing (RNA-seq), histone chromatin immunoprecipitation followed by sequencing (ChIP-seq) and assay for transposase-accessible chromatin using sequencing (ATAC-seq) of skin in wild-type and IRF6-deficient mouse embryos, we define the transcriptional programs that are regulated by IRF6 during epidermal differentiation. IRF6 was enriched at bivalent promoters, and IRF6 deficiency caused defective expression of genes that are involved in the metabolism of lipids and the formation of tight junctions. Accordingly, the lipid composition of the stratum corneum of Irf6-/- skin was abnormal, culminating in a severe defect in the function of the epidermal barrier. Collectively, our results explain how RIPK4 and IRF6 function to ensure the integrity of the epidermis and provide mechanistic insights into why developmental syndromes that are characterized by orofacial, skin and genital abnormalities result when this axis goes awry.
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Telmisartan Lowers Elevated Blood Pressure in Psoriatic Mice without Attenuating Vascular Dysfunction and Inflammation. Int J Mol Sci 2019; 20:ijms20174261. [PMID: 31480330 PMCID: PMC6747395 DOI: 10.3390/ijms20174261] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2019] [Revised: 08/24/2019] [Accepted: 08/28/2019] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Psoriasis is hallmarked by vascular dysfunction, arterial hypertension, and an increased risk for cardiovascular diseases. We have shown recently that skin-driven interleukin (IL)-17A expression promotes psoriasis-like disease in mice, and this is associated with vascular inflammation, vascular dysfunction, and hypertension. As an intensive risk-factor reduction is recommended for psoriasis patients, we aimed to elucidate the impact of the angiotensin II receptor type 1 (AT1) antagonist telmisartan in a mouse model of severe psoriasis-like skin disease. METHODS AND RESULTS Elevated blood pressure measured by tail-cuff plethysmography in mice with keratinocyte-specific IL-17A overexpression (K14-IL-17Aind/+ mice) was significantly reduced in response to telmisartan. Importantly, vascular dysfunction, as assessed by isometric tension studies of isolated aortic rings, vascular inflammation measured by flow cytometry analysis of CD45+CD11b+ immune cells, as well as the increased peripheral oxidative stress levels assessed by L-012-enhanced chemiluminescence were not attenuated by telmisartan treatment of K14-IL-17Aind/+ mice, nor was the persisting skin inflammation. CONCLUSION We provide first evidence for an effective antihypertensive treatment in experimental psoriasis by AT1 blockade, but without any impact on vascular inflammation and dysfunction in our mouse model of severe psoriasis-like skin disease. This suggests that vascular function and inflammation in psoriasis might not be attenuated as long as skin inflammation persists.
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Ding X, Willenborg S, Bloch W, Wickström SA, Wagle P, Brodesser S, Roers A, Jais A, Brüning JC, Hall MN, Rüegg MA, Eming SA. Epidermal mammalian target of rapamycin complex 2 controls lipid synthesis and filaggrin processing in epidermal barrier formation. J Allergy Clin Immunol 2019; 145:283-300.e8. [PMID: 31401286 DOI: 10.1016/j.jaci.2019.07.033] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Revised: 06/21/2019] [Accepted: 07/08/2019] [Indexed: 12/31/2022]
Abstract
BACKGROUND Perturbation of epidermal barrier formation will profoundly compromise overall skin function, leading to a dry and scaly, ichthyosis-like skin phenotype that is the hallmark of a broad range of skin diseases, including ichthyosis, atopic dermatitis, and a multitude of clinical eczema variants. An overarching molecular mechanism that orchestrates the multitude of factors controlling epidermal barrier formation and homeostasis remains to be elucidated. OBJECTIVE Here we highlight a specific role of mammalian target of rapamycin complex 2 (mTORC2) signaling in epidermal barrier formation. METHODS Epidermal mTORC2 signaling was specifically disrupted by deleting rapamycin-insensitive companion of target of rapamycin (Rictor), encoding an essential subunit of mTORC2 in mouse epidermis (epidermis-specific homozygous Rictor deletion [RicEKO] mice). Epidermal structure and barrier function were investigated through a combination of gene expression, biochemical, morphological and functional analysis in RicEKO and control mice. RESULTS RicEKO newborns displayed an ichthyosis-like phenotype characterized by dysregulated epidermal de novo lipid synthesis, altered lipid lamellae structure, and aberrant filaggrin (FLG) processing. Despite a compensatory transcriptional epidermal repair response, the protective epidermal function was impaired in RicEKO mice, as revealed by increased transepidermal water loss, enhanced corneocyte fragility, decreased dendritic epidermal T cells, and an exaggerated percutaneous immune response. Restoration of Akt-Ser473 phosphorylation in mTORC2-deficient keratinocytes through expression of constitutive Akt rescued FLG processing. CONCLUSION Our findings reveal a critical metabolic signaling relay of barrier formation in which epidermal mTORC2 activity controls FLG processing and de novo epidermal lipid synthesis during cornification. Our findings provide novel mechanistic insights into epidermal barrier formation and could open up new therapeutic opportunities to restore defective epidermal barrier conditions.
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Affiliation(s)
- Xiaolei Ding
- Department of Dermatology, University of Cologne, Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany
| | | | - Wilhelm Bloch
- Department of Molecular and Cellular Sport Medicine, German Sport University Cologne, Cologne, Germany
| | - Sara A Wickström
- Paul Gerson Unna Group "Skin Homeostasis and Ageing", Max Planck Institute for Biology of Ageing, Cologne, Germany; Helsinki Institute of Life Science, Biomedicum Helsinki, University of Helsinki, Helsinki, Finland; Wihuri Research Institute, Biomedicum Helsinki, University of Helsinki, Helsinki, Finland; Cluster of Excellence Cellular Stress Responses in Aging-associated Diseases (CECAD), University of Cologne, Cologne, Germany
| | - Prerana Wagle
- Cluster of Excellence Cellular Stress Responses in Aging-associated Diseases (CECAD), University of Cologne, Cologne, Germany
| | - Susanne Brodesser
- Cluster of Excellence Cellular Stress Responses in Aging-associated Diseases (CECAD), University of Cologne, Cologne, Germany
| | - Axel Roers
- Institute for Immunology, Medical Faculty Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - Alexander Jais
- Max Planck Institute for Metabolism Research, Cologne, Germany
| | - Jens C Brüning
- Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany; Cluster of Excellence Cellular Stress Responses in Aging-associated Diseases (CECAD), University of Cologne, Cologne, Germany; Max Planck Institute for Metabolism Research, Cologne, Germany
| | | | | | - Sabine A Eming
- Department of Dermatology, University of Cologne, Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany; Cluster of Excellence Cellular Stress Responses in Aging-associated Diseases (CECAD), University of Cologne, Cologne, Germany.
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Sutton SK, Cheung BB, Massudi H, Tan O, Koach J, Mayoh C, Carter DR, Marshall GM. Heterozygous loss of keratinocyte TRIM16 expression increases melanocytic cell lesions and lymph node metastasis. J Cancer Res Clin Oncol 2019; 145:2241-2250. [PMID: 31342168 PMCID: PMC6708510 DOI: 10.1007/s00432-019-02981-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Accepted: 07/16/2019] [Indexed: 11/28/2022]
Abstract
PURPOSE The tripartite motif (TRIM)16 acts as a tumour suppressor in both squamous cell carcinoma (SCC) and melanoma. TRIM16 is known to be secreted by keratinocytes, but no studies have been reported yet to assess the relationship between TRIM16 keratinocyte expression and melanoma development. METHODS To study the role of TRIM16 in skin cancer development, we developed a keratinocyte TRIM16-specific knockout mouse model, and used the classical two-stage skin carcinogenesis challenge method, to assess the loss of keratinocyte TRIM16 on both papilloma, SCC and melanoma development in the skin after topical carcinogen treatment. RESULTS Heterozygous, but not homozygous, TRIM16 knockout mice exhibited an accelerated development of skin papillomas and melanomas, larger melanoma lesions and an increased potential for lymph node metastasis. CONCLUSION This study provides the first evidence that keratinocyte loss of the putative melanoma tumour suppressor protein, TRIM16, enhances melanomagenesis. Our data also suggest that TRIM16 expression in keratinocytes is involved in cross talk between keratinocytes and melanocytes, and has a role in melanoma tumorigenesis.
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Affiliation(s)
- Selina K Sutton
- Children's Cancer Institute Australia for Medical Research, Lowy Cancer Research Centre, UNSW Sydney, Kensington, NSW, Australia
| | - Belamy B Cheung
- Children's Cancer Institute Australia for Medical Research, Lowy Cancer Research Centre, UNSW Sydney, Kensington, NSW, Australia. .,School of Women's and Children's Health, UNSW Sydney, Randwick, NSW, 2031, Australia.
| | - Hassina Massudi
- Children's Cancer Institute Australia for Medical Research, Lowy Cancer Research Centre, UNSW Sydney, Kensington, NSW, Australia
| | - Owen Tan
- Children's Cancer Institute Australia for Medical Research, Lowy Cancer Research Centre, UNSW Sydney, Kensington, NSW, Australia
| | - Jessica Koach
- Children's Cancer Institute Australia for Medical Research, Lowy Cancer Research Centre, UNSW Sydney, Kensington, NSW, Australia
| | - Chelsea Mayoh
- Children's Cancer Institute Australia for Medical Research, Lowy Cancer Research Centre, UNSW Sydney, Kensington, NSW, Australia
| | - Daniel R Carter
- Children's Cancer Institute Australia for Medical Research, Lowy Cancer Research Centre, UNSW Sydney, Kensington, NSW, Australia.,School of Biomedical Engineering, University of Technology Sydney, Ultimo, Australia
| | - Glenn M Marshall
- Children's Cancer Institute Australia for Medical Research, Lowy Cancer Research Centre, UNSW Sydney, Kensington, NSW, Australia. .,Kids Cancer Centre, Sydney Children's Hospital, Randwick, NSW, 2031, Australia.
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40
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Zhang M, Wang X, Guo F, Jia Q, Liu N, Chen Y, Yan Y, Huang M, Tang H, Deng Y, Huang S, Zhou Z, Zhang L, Zhang L. Cdc42 Deficiency Leads To Epidermal Barrier Dysfunction by Regulating Intercellular Junctions and Keratinization of Epidermal Cells during Mouse Skin Development. Am J Cancer Res 2019; 9:5065-5084. [PMID: 31410202 PMCID: PMC6691388 DOI: 10.7150/thno.34014] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Accepted: 06/08/2019] [Indexed: 01/19/2023] Open
Abstract
Rationale: Cdc42 is a Rho GTPase that regulates diverse cellular functions. Here, we used genetic techniques to investigate the role of Cdc42 in epidermal development and epidermal barrier formation. Methods: Keratinocyte-restricted Cdc42 knockout mice were generated with the Cre-LoxP system under the keratin 14 (K14) promoter. The skin and other tissues were collected from mutant and wild-type mice, and their cellular, molecular, morphological, and physiological features were analyzed. Results: Loss of Cdc42 in the epidermis in vivo resulted in neonatal lethality and impairment of epidermal barrier formation. Cdc42 deficiency led to the loss of epidermal stem cells. The absence of Cdc42 led to increased thickening of the epidermis, which was associated with increased proliferation and reduced apoptosis of keratinocytes. In addition, Cdc42 deficiency damaged tight junctions, adherens junctions and desmosomes. RNA sequencing results showed that the most significantly altered genes were enriched by the terms of “keratinization” and “cornified envelope” (CE). Among the differentially expressed genes in the CE term, several members of the small proline-rich protein (SPRR) family were upregulated. Further study revealed that there may be a Cdc42-SPRR pathway, which may correlate with epidermal barrier function. Conclusions: Our study indicates that Cdc42 is essential for epidermal development and epidermal barrier formation. Defects in Cdc42-SPRR signaling may be associated with skin barrier dysfunction and a variety of skin diseases.
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41
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Dual role of laminin‑511 in regulating melanocyte migration and differentiation. Matrix Biol 2019; 80:59-71. [DOI: 10.1016/j.matbio.2018.09.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 09/25/2018] [Accepted: 09/25/2018] [Indexed: 11/22/2022]
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42
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Moos S, Mohebiany AN, Waisman A, Kurschus FC. Imiquimod-Induced Psoriasis in Mice Depends on the IL-17 Signaling of Keratinocytes. J Invest Dermatol 2019; 139:1110-1117. [PMID: 30684554 DOI: 10.1016/j.jid.2019.01.006] [Citation(s) in RCA: 116] [Impact Index Per Article: 23.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Revised: 12/17/2018] [Accepted: 01/08/2019] [Indexed: 12/21/2022]
Abstract
The pathology of psoriasis strongly depends on IL-17A. Monoclonal antibodies blocking either the cytokine or its receptor are among the most efficient treatments for psoriatic patients. Keratinocytes can be activated upon exposure to IL-17A and tumor necrosis factor-α and secrete secondary cytokines and chemokines in the inflamed skin. In psoriasis and its imiquimod-induced mouse model, a strong skin infiltration of neutrophils and inflammatory monocytes can be observed. However, to date, it is not clear how exactly those cellular populations are attracted to the skin and how they contribute to the pathogenesis of the disease. To define the crucial cell type responding to IL-17 and initiating the downstream pathology in psoriasis-like dermatitis, we used mice specifically lacking the IL-17 receptor (IL-17RA) in different cell types. Deletion of IL-17RA in T cells or myeloid had no impact on disease development. Only deletion of this receptor in keratinocytes reflected the full-body deletion of IL-17RA, resulting in strongly reduced dermatitis development. Imiquimod treatment of those IL-17 signaling-deficient mice maintained high monocytic infiltration but failed to attract neutrophils into the skin. We conclude that keratinocytes are a critical cellular target for IL-17A-mediated neutrophil attraction and psoriasis development.
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Affiliation(s)
- Sonja Moos
- Institute for Molecular Medicine, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Alma N Mohebiany
- Institute for Molecular Medicine, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Ari Waisman
- Institute for Molecular Medicine, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Florian C Kurschus
- Institute for Molecular Medicine, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany; Department of Dermatology, Heidelberg University Hospital, Heidelberg, Germany.
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Panda S, Gekara NO. The deubiquitinase MYSM1 dampens NOD2-mediated inflammation and tissue damage by inactivating the RIP2 complex. Nat Commun 2018; 9:4654. [PMID: 30405132 PMCID: PMC6220254 DOI: 10.1038/s41467-018-07016-0] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2018] [Accepted: 10/11/2018] [Indexed: 12/12/2022] Open
Abstract
NOD2 is essential for antimicrobial innate immunity and tissue homeostasis, but require tight regulation to avert pathology. A focal point of NOD2 signaling is RIP2, which upon polyubiquitination nucleates the NOD2:RIP2 complex, enabling signaling events leading to inflammation, yet the precise nature and the regulation of the polyubiquitins coordinating this process remain unclear. Here we show that NOD2 signaling involves conjugation of RIP2 with lysine 63 (K63), K48 and M1 polyubiquitin chains, as well as with non-canonical K27 chains. In addition, we identify MYSM1 as a proximal deubiquitinase that attenuates NOD2:RIP2 complex assembly by selectively removing the K63, K27 and M1 chains, but sparing the K48 chains. Consequently, MYSM1 deficient mice have unrestrained NOD2-mediated peritonitis, systemic inflammation and liver injury. This study provides a complete overview of the polyubiquitins in NOD2:RIP2 signaling and reveal MYSM1 as a central negative regulator restricting these polyubiquitins to prevent excessive inflammation. The innate immune receptor NOD2 is tightly regulated to ensure beneficial antimicrobial immunity. Here the authors show that the H2A deubiquitinase MYSM1 restrains NOD2 signaling by removing lysine 63 (K63), K27, M1 but not K48 polyubiquitin chains from its downstream adaptor protein RIP2.
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Affiliation(s)
- Swarupa Panda
- The Laboratory for Molecular Infection Medicine Sweden (MIMS), Umeå Centre for Microbial Research (UCMR), Umeå University, 90 187, Umeå, Sweden
| | - Nelson O Gekara
- The Laboratory for Molecular Infection Medicine Sweden (MIMS), Umeå Centre for Microbial Research (UCMR), Umeå University, 90 187, Umeå, Sweden.
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LUBAC prevents lethal dermatitis by inhibiting cell death induced by TNF, TRAIL and CD95L. Nat Commun 2018; 9:3910. [PMID: 30254289 PMCID: PMC6156229 DOI: 10.1038/s41467-018-06155-8] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Accepted: 08/17/2018] [Indexed: 12/13/2022] Open
Abstract
The linear ubiquitin chain assembly complex (LUBAC), composed of HOIP, HOIL-1 and SHARPIN, is required for optimal TNF-mediated gene activation and to prevent cell death induced by TNF. Here, we demonstrate that keratinocyte-specific deletion of HOIP or HOIL-1 (E-KO) results in severe dermatitis causing postnatal lethality. We provide genetic and pharmacological evidence that the postnatal lethal dermatitis in HoipE-KO and Hoil-1E-KO mice is caused by TNFR1-induced, caspase-8-mediated apoptosis that occurs independently of the kinase activity of RIPK1. In the absence of TNFR1, however, dermatitis develops in adulthood, triggered by RIPK1-kinase-activity-dependent apoptosis and necroptosis. Strikingly, TRAIL or CD95L can redundantly induce this disease-causing cell death, as combined loss of their respective receptors is required to prevent TNFR1-independent dermatitis. These findings may have implications for the treatment of patients with mutations that perturb linear ubiquitination and potentially also for patients with inflammation-associated disorders that are refractory to inhibition of TNF alone. TNF mediated inflammation is critical in autoimmune mediated pathology, however many patients are refractory to current anti-TNF therapeutics. Here the authors show induction of several death ligands, in addition to TNF is sufficient to cause fatal dermatitis in a LUBAC deficient murine model of disease.
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Hiller B, Hoppe A, Haase C, Hiller C, Schubert N, Müller W, Reijns MAM, Jackson AP, Kunkel TA, Wenzel J, Behrendt R, Roers A. Ribonucleotide Excision Repair Is Essential to Prevent Squamous Cell Carcinoma of the Skin. Cancer Res 2018; 78:5917-5926. [PMID: 30154151 DOI: 10.1158/0008-5472.can-18-1099] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 07/10/2018] [Accepted: 08/22/2018] [Indexed: 01/07/2023]
Abstract
Because of imperfect discrimination against ribonucleoside triphosphates by the replicative DNA polymerases, large numbers of ribonucleotides are incorporated into the eukaryotic nuclear genome during S-phase. Ribonucleotides, by far the most common DNA lesion in replicating cells, destabilize the DNA, and an evolutionarily conserved DNA repair machinery, ribonucleotide excision repair (RER), ensures ribonucleotide removal. Whereas complete lack of RER is embryonically lethal, partial loss-of-function mutations in the genes encoding subunits of RNase H2, the enzyme essential for initiation of RER, cause the SLE-related type I interferonopathy Aicardi-Goutières syndrome. Here, we demonstrate that selective inactivation of RER in mouse epidermis results in spontaneous DNA damage and epidermal hyperproliferation associated with loss of hair follicle stem cells and hair follicle function. The animals developed keratinocyte intraepithelial neoplasia and invasive squamous cell carcinoma with complete penetrance, despite potent type I interferon production and skin inflammation. These results suggest that compromises to RER-mediated genome maintenance might represent an important tumor-promoting principle in human cancer.Significance: Selective inactivation of ribonucleotide excision repair by loss of RNase H2 in the murine epidermis results in spontaneous DNA damage, type I interferon response, skin inflammation, and development of squamous cell carcinoma. Cancer Res; 78(20); 5917-26. ©2018 AACR.
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Affiliation(s)
- Björn Hiller
- Institute for Immunology, Medical Faculty Carl Gustav Carus, TU Dresden, Dresden, Germany.,Gene Center and Department of Biochemistry, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Anja Hoppe
- Institute for Immunology, Medical Faculty Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - Christa Haase
- Institute for Immunology, Medical Faculty Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - Christina Hiller
- Institute for Immunology, Medical Faculty Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - Nadja Schubert
- Institute for Immunology, Medical Faculty Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - Werner Müller
- Faculty of Biology, Medicine and Health, University of Manchester, Manchester, United Kingdom
| | - Martin A M Reijns
- MRC Human Genetics Unit, MRC Institute of Genetics and Molecular Medicine, The University of Edinburgh, Edinburgh, United Kingdom
| | - Andrew P Jackson
- MRC Human Genetics Unit, MRC Institute of Genetics and Molecular Medicine, The University of Edinburgh, Edinburgh, United Kingdom
| | - Thomas A Kunkel
- Genome Integrity and Structural Biology Laboratory, National Institute of Environmental Health Sciences (NIEHS), NIH, Research Triangle Park, North Carolina
| | - Jörg Wenzel
- Department of Dermatology and Allergy, University Hospital Bonn, Bonn, Germany
| | - Rayk Behrendt
- Institute for Immunology, Medical Faculty Carl Gustav Carus, TU Dresden, Dresden, Germany.
| | - Axel Roers
- Institute for Immunology, Medical Faculty Carl Gustav Carus, TU Dresden, Dresden, Germany.
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Duteil D, Tourrette Y, Eberlin A, Willmann D, Patel D, Friedrichs N, Müller JM, Schüle R. The histone acetyltransferase inhibitor Nir regulates epidermis development. Development 2018; 145:dev.158543. [PMID: 29490983 DOI: 10.1242/dev.158543] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Accepted: 02/11/2018] [Indexed: 11/20/2022]
Abstract
In addition to its function as an inhibitor of histone acetyltransferases, Nir (Noc2l) binds to p53 and TAp63 to regulate their activity. Here, we show that epidermis-specific ablation of Nir impairs epidermal stratification and barrier function, resulting in perinatal lethality. Nir-deficient epidermis lacks appendages and remains single layered during embryogenesis. Cell proliferation is inhibited, whereas apoptosis and p53 acetylation are increased, indicating that Nir is controlling cell proliferation by limiting p53 acetylation. Transcriptome analysis revealed that Nir regulates the expression of essential factors in epidermis development, such as keratins, integrins and laminins. Furthermore, Nir binds to and controls the expression of p63 and limits H3K18ac at the p63 promoter. Corroborating the stratification defects, asymmetric cell divisions were virtually absent in Nir-deficient mice, suggesting that Nir is required for correct mitotic spindle orientation. In summary, our data define Nir as a key regulator of skin development.
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Affiliation(s)
- Delphine Duteil
- Urologische Klinik und Zentrale Klinische Forschung, Klinikum der Universität Freiburg, Breisacherstrasse 66, 79106 Freiburg, Germany
| | - Yves Tourrette
- Urologische Klinik und Zentrale Klinische Forschung, Klinikum der Universität Freiburg, Breisacherstrasse 66, 79106 Freiburg, Germany
| | - Adrien Eberlin
- Urologische Klinik und Zentrale Klinische Forschung, Klinikum der Universität Freiburg, Breisacherstrasse 66, 79106 Freiburg, Germany
| | - Dominica Willmann
- Urologische Klinik und Zentrale Klinische Forschung, Klinikum der Universität Freiburg, Breisacherstrasse 66, 79106 Freiburg, Germany
| | - Dharmeshkumar Patel
- Pediatric Blood and Marrow Transplant, University of Minnesota, 2-191 Moos Tower, 515 Delaware St. SE, Minneapolis, MN 55455, USA
| | - Nicolaus Friedrichs
- Institute of Pathology, University of Cologne Medical School, 50937 Cologne, Germany
| | - Judith M Müller
- Urologische Klinik und Zentrale Klinische Forschung, Klinikum der Universität Freiburg, Breisacherstrasse 66, 79106 Freiburg, Germany
| | - Roland Schüle
- Urologische Klinik und Zentrale Klinische Forschung, Klinikum der Universität Freiburg, Breisacherstrasse 66, 79106 Freiburg, Germany .,BIOSS Centre of Biological Signalling Studies, Albert-Ludwigs-University, 79106 Freiburg, Germany.,Deutsche Konsortium für Translationale Krebsforschung (DKTK), Standort, 79106 Freiburg, Germany
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47
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Kondylis V, Kumari S, Vlantis K, Pasparakis M. The interplay of IKK, NF-κB and RIPK1 signaling in the regulation of cell death, tissue homeostasis and inflammation. Immunol Rev 2018; 277:113-127. [PMID: 28462531 DOI: 10.1111/imr.12550] [Citation(s) in RCA: 150] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Accepted: 03/07/2017] [Indexed: 12/12/2022]
Abstract
Regulated cell death pathways have important functions in host defense and tissue homeostasis. Studies in genetic mouse models provided evidence that cell death could cause inflammation in different tissues. Inhibition of RIPK3-MLKL-dependent necroptosis by FADD and caspase-8 was identified as a key mechanism preventing inflammation in epithelial barriers. Moreover, the interplay between IKK/NF-κB and RIPK1 signaling was recognized as a critical determinant of tissue homeostasis and inflammation. NEMO was shown to regulate RIPK1 kinase activity-mediated apoptosis by NF-κB-dependent and -independent functions, which are critical for averting chronic tissue injury and inflammation in the intestine and the liver. In addition, RIPK1 was shown to exhibit kinase activity-independent functions that are essential for preventing cell death, maintaining tissue architecture and inhibiting inflammation. In the intestine, RIPK1 acts as a scaffold to prevent epithelial cell apoptosis and preserve tissue integrity. In the skin, RIPK1 functions via its RHIM to counteract ZBP1/DAI-dependent activation of RIPK3-MLKL-dependent necroptosis and inflammation. Collectively, these studies provided evidence that the regulation of cell death signaling plays an important role in the maintenance of tissue homeostasis, and suggested that cell death could be causally involved in the pathogenesis of inflammatory diseases.
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Affiliation(s)
- Vangelis Kondylis
- Institute for Genetics, University of Cologne, Cologne, Germany.,Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany.,Center for Molecular Medicine (CMMC), University of Cologne, Cologne, Germany
| | - Snehlata Kumari
- Institute for Genetics, University of Cologne, Cologne, Germany.,Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany.,Center for Molecular Medicine (CMMC), University of Cologne, Cologne, Germany
| | - Katerina Vlantis
- Institute for Genetics, University of Cologne, Cologne, Germany.,Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany.,Center for Molecular Medicine (CMMC), University of Cologne, Cologne, Germany
| | - Manolis Pasparakis
- Institute for Genetics, University of Cologne, Cologne, Germany.,Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany.,Center for Molecular Medicine (CMMC), University of Cologne, Cologne, Germany
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48
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Welcker D, Jain M, Khurshid S, Jokić M, Höhne M, Schmitt A, Frommolt P, Niessen CM, Spiro J, Persigehl T, Wittersheim M, Büttner R, Fanciulli M, Schermer B, Reinhardt HC, Benzing T, Höpker K. AATF suppresses apoptosis, promotes proliferation and is critical for Kras-driven lung cancer. Oncogene 2018; 37:1503-1518. [DOI: 10.1038/s41388-017-0054-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Revised: 11/02/2017] [Accepted: 11/03/2017] [Indexed: 12/20/2022]
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49
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Urwyler-Rösselet C, Tanghe G, Leurs K, Gilbert B, De Rycke R, De Bruyne M, Lippens S, Bartunkova S, De Groote P, Niessen C, Haftek M, Vandenabeele P, Declercq W. Keratinocyte-Specific Ablation of RIPK4 Allows Epidermal Cornification but Impairs Skin Barrier Formation. J Invest Dermatol 2018; 138:1268-1278. [PMID: 29317263 DOI: 10.1016/j.jid.2017.12.031] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Revised: 12/15/2017] [Accepted: 12/16/2017] [Indexed: 10/18/2022]
Abstract
In humans, receptor-interacting protein kinase 4 (RIPK4) mutations can lead to the autosomal recessive Bartsocas-Papas and popliteal pterygium syndromes, which are characterized by severe skin defects, pterygia, as well as clefting. We show here that the epithelial fusions observed in RIPK4 full knockout (KO) mice are E-cadherin dependent, as keratinocyte-specific deletion of E-cadherin in RIPK4 full KO mice rescued the tail-to-body fusion and fusion of oral epithelia. To elucidate RIPK4 function in epidermal differentiation and development, we generated epidermis-specific RIPK4 KO mice (RIPK4EKO). In contrast to RIPK4 full KO epidermis, RIPK4EKO epidermis was normally stratified and the outside-in skin barrier in RIPK4EKO mice was largely intact at the trunk, in contrast to the skin covering the head and the outer end of the extremities. However, RIPK4EKO mice die shortly after birth due to excessive water loss because of loss of tight junction protein claudin-1 localization at the cell membrane, which results in tight junction leakiness. In contrast, mice with keratinocyte-specific RIPK4 deletion during adult life remain viable. Furthermore, our data indicate that epidermis-specific deletion of RIPK4 results in delayed keratinization and stratum corneum maturation and altered lipid organization and is thus indispensable during embryonic development for the formation of a functional inside-out epidermal barrier.
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Affiliation(s)
- Corinne Urwyler-Rösselet
- Molecular Signaling and Cell Death Unit, Inflammation Research Center (IRC), VIB, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium; Current affiliation: Department of Biology, Institute of Molecular Health Sciences, ETH Zurich, Zurich, Switzerland
| | - Giel Tanghe
- Molecular Signaling and Cell Death Unit, Inflammation Research Center (IRC), VIB, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Kirsten Leurs
- Molecular Signaling and Cell Death Unit, Inflammation Research Center (IRC), VIB, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Barbara Gilbert
- Molecular Signaling and Cell Death Unit, Inflammation Research Center (IRC), VIB, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Riet De Rycke
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium; VIB Bio Imaging Core, VIB Inflammation Research Center, Ghent, Belgium
| | - Michiel De Bruyne
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium; VIB Bio Imaging Core, VIB Inflammation Research Center, Ghent, Belgium
| | - Saskia Lippens
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium; VIB Bio Imaging Core, VIB Inflammation Research Center, Ghent, Belgium
| | - Sonia Bartunkova
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium; VIB Bio Imaging Core, VIB Inflammation Research Center, Ghent, Belgium
| | - Philippe De Groote
- Molecular Signaling and Cell Death Unit, Inflammation Research Center (IRC), VIB, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Carien Niessen
- Department of Dermatology, University of Cologne, Cologne, Germany
| | - Marek Haftek
- LBTI, UMR5305 CNRS, University of Lyon, Lyon, France
| | - Peter Vandenabeele
- Molecular Signaling and Cell Death Unit, Inflammation Research Center (IRC), VIB, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Wim Declercq
- Molecular Signaling and Cell Death Unit, Inflammation Research Center (IRC), VIB, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium.
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50
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Weiland D, Brachvogel B, Hornig-Do HT, Neuhaus JF, Holzer T, Tobin DJ, Niessen CM, Wiesner RJ, Baris OR. Imbalance of Mitochondrial Respiratory Chain Complexes in the Epidermis Induces Severe Skin Inflammation. J Invest Dermatol 2018; 138:132-140. [DOI: 10.1016/j.jid.2017.08.019] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Revised: 08/16/2017] [Accepted: 08/16/2017] [Indexed: 11/24/2022]
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