1
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Yaba A, Thalheim T, Schneider MR. The role of cell-cell and cell-matrix junctional complexes in sebaceous gland homeostasis and differentiation. Cell Commun Signal 2024; 22:445. [PMID: 39313816 PMCID: PMC11421122 DOI: 10.1186/s12964-024-01835-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2024] [Accepted: 09/17/2024] [Indexed: 09/25/2024] Open
Abstract
Sebaceous glands (SG) are essential for maintaining skin integrity, as their lipid-rich secretion (sebum) lubricates and protects the epidermis and hairs. In addition, these glands have an emerging role in immunomodulation and may affect whole-body energy metabolism, besides being an appealing model for research in topics as lipogenesis, stem cell biology and tumorigenesis. In spite of the increasing interest in studying SGs pathophysiology, sebocyte cell-cell and cell-matrix adhesion processes have been only superficially examined, and never in a systematic way. This is regrettable considering the key role of cellular adhesion in general, the specific expression pattern of indivdual junctional complexes, and the reports of structural changes in SGs after altered expression of adhesion-relevant proteins. Here, we review the available information on structural and functional aspects of cell-cell and cell-matrix junctions in sebocytes, and how these processes change under pathological conditions. This information will contribute for better understanding sebocyte differentiation and sebum secretion, and may provide hints for novel therapeutic strategies for skin diseases.
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Affiliation(s)
- Aylin Yaba
- Department of Histology and Embryology, Faculty of Medicine, Yeditepe University, Istanbul, Türkiye
| | - Torsten Thalheim
- Present Address: Deutsches Biomasseforschungszentrum gGmbH, Torgauer Str. 116, 04347, Leipzig, Germany
- Interdisciplinary Centre for Bioinformatics, Härtelstr. 16-18, 04107, Leipzig, Germany
| | - Marlon R Schneider
- Institute of Veterinary Physiology, University of Leipzig, An den Tierkliniken 7, 04103, Leipzig, Germany.
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2
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Ronzio M, Bernardini A, Taglietti V, Ceribelli M, Donati G, Gallo A, Pavesi G, Dellabona P, Casorati G, Messina G, Mantovani R, Dolfini D. Genomic binding of NF-Y in mouse and human cells. Genomics 2024; 116:110895. [PMID: 39025317 DOI: 10.1016/j.ygeno.2024.110895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2024] [Revised: 06/12/2024] [Accepted: 07/13/2024] [Indexed: 07/20/2024]
Abstract
NF-Y is a Transcription Factor that regulates transcription through binding to the CCAAT-box. To understand its strategy, we analyzed 16 ChIP-seq datasets from human and mouse cells. Shared loci, mostly located in promoters of expressed genes of cell cycle, metabolism and gene expression pathways, are associated with histone marks of active chromatin and specific modules of TFs. Other peaks are in enhancers and Transposable Elements -TE- of retroviral origin in human and mouse. We evaluated the relationship with USF1, a common synergistic partner in promoters and MLT1 TEs, upon NF-YB inactivation: USF1 binding decreases in promoters, modestly in MLT1, suggesting a pioneering role of NF-Y in formers, not in the latters. These data define a common set of NF-Y functional targets across different mammalian cell types, suggesting a pioneering role in promoters with respect to TEs.
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Affiliation(s)
- Mirko Ronzio
- Dipartimento di Bioscienze, Università degli Studi di Milano, Milano, Italy
| | - Andrea Bernardini
- Dipartimento di Bioscienze, Università degli Studi di Milano, Milano, Italy
| | | | - Michele Ceribelli
- Dipartimento di Bioscienze, Università degli Studi di Milano, Milano, Italy
| | - Giacomo Donati
- Dipartimento di Scienze della Vita e Biologia dei Sistemi, Università degli Studi di Torino, Torino, Italy
| | - Alberto Gallo
- Dipartimento di Bioscienze, Università degli Studi di Milano, Milano, Italy
| | - Giulio Pavesi
- Dipartimento di Bioscienze, Università degli Studi di Milano, Milano, Italy
| | - Paolo Dellabona
- Experimental Immunology Unit. Division of Immunology, Transplantation and Infectious Diseases, San Raffaele Scientific Institute, Milano, Italy
| | - Giulia Casorati
- Experimental Immunology Unit. Division of Immunology, Transplantation and Infectious Diseases, San Raffaele Scientific Institute, Milano, Italy
| | - Graziella Messina
- Dipartimento di Bioscienze, Università degli Studi di Milano, Milano, Italy
| | - Roberto Mantovani
- Dipartimento di Bioscienze, Università degli Studi di Milano, Milano, Italy
| | - Diletta Dolfini
- Dipartimento di Bioscienze, Università degli Studi di Milano, Milano, Italy.
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3
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Liu Y, Gao H, Chen H, Ji S, Wu L, Zhang H, Wang Y, Fu X, Sun X. Sebaceous gland organoid engineering. BURNS & TRAUMA 2024; 12:tkae003. [PMID: 38699464 PMCID: PMC11063650 DOI: 10.1093/burnst/tkae003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 12/27/2023] [Indexed: 05/05/2024]
Abstract
Sebaceous glands (SGs), as holocrine-secreting appendages, lubricate the skin and play a central role in the skin barrier. Large full-thickness skin defects cause overall architecture disruption and SG loss. However, an effective strategy for SG regeneration is lacking. Organoids are 3D multicellular structures that replicate key anatomical and functional characteristics of in vivo tissues and exhibit great potential in regenerative medicine. Recently, considerable progress has been made in developing reliable procedures for SG organoids and existing SG organoids recapitulate the main morphological, structural and functional features of their in vivo counterparts. Engineering approaches empower researchers to manipulate cell behaviors, the surrounding environment and cell-environment crosstalk within the culture system as needed. These techniques can be applied to the SG organoid culture system to generate functionally more competent SG organoids. This review aims to provide an overview of recent advancements in SG organoid engineering. It highlights some potential strategies for SG organoid functionalization that are promising to forge a platform for engineering vascularized, innervated, immune-interactive and lipogenic SG organoids. We anticipate that this review will not only contribute to improving our understanding of SG biology and regeneration but also facilitate the transition of the SG organoid from laboratory research to a feasible clinical application.
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Affiliation(s)
- Yiqiong Liu
- Research Center for Tissue Repair and Regeneration affliated to the Medical Innovation Research Department and 4th Medical Center, PLA General Hospital and PLA Medical College; PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration; Research Unit of Trauma Care, Tissue Repair and Regeneration, Chinese Academy of Medical Sciences, 2019RU051, Beijing 100048, P. R. China
| | - Huanhuan Gao
- Research Center for Tissue Repair and Regeneration affliated to the Medical Innovation Research Department and 4th Medical Center, PLA General Hospital and PLA Medical College; PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration; Research Unit of Trauma Care, Tissue Repair and Regeneration, Chinese Academy of Medical Sciences, 2019RU051, Beijing 100048, P. R. China
| | - Huating Chen
- Research Center for Tissue Repair and Regeneration affliated to the Medical Innovation Research Department and 4th Medical Center, PLA General Hospital and PLA Medical College; PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration; Research Unit of Trauma Care, Tissue Repair and Regeneration, Chinese Academy of Medical Sciences, 2019RU051, Beijing 100048, P. R. China
| | - Shuaifei Ji
- Research Center for Tissue Repair and Regeneration affliated to the Medical Innovation Research Department and 4th Medical Center, PLA General Hospital and PLA Medical College; PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration; Research Unit of Trauma Care, Tissue Repair and Regeneration, Chinese Academy of Medical Sciences, 2019RU051, Beijing 100048, P. R. China
| | - Lu Wu
- Research Center for Tissue Repair and Regeneration affliated to the Medical Innovation Research Department and 4th Medical Center, PLA General Hospital and PLA Medical College; PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration; Research Unit of Trauma Care, Tissue Repair and Regeneration, Chinese Academy of Medical Sciences, 2019RU051, Beijing 100048, P. R. China
| | - Hongliang Zhang
- Research Center for Tissue Repair and Regeneration affliated to the Medical Innovation Research Department and 4th Medical Center, PLA General Hospital and PLA Medical College; PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration; Research Unit of Trauma Care, Tissue Repair and Regeneration, Chinese Academy of Medical Sciences, 2019RU051, Beijing 100048, P. R. China
| | - Yujia Wang
- Queen Mary School of Nanchang University, Nanchang University, Nanchang, Jiangxi 330006, P. R. China
| | - Xiaobing Fu
- Research Center for Tissue Repair and Regeneration affliated to the Medical Innovation Research Department and 4th Medical Center, PLA General Hospital and PLA Medical College; PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration; Research Unit of Trauma Care, Tissue Repair and Regeneration, Chinese Academy of Medical Sciences, 2019RU051, Beijing 100048, P. R. China
| | - Xiaoyan Sun
- Research Center for Tissue Repair and Regeneration affliated to the Medical Innovation Research Department and 4th Medical Center, PLA General Hospital and PLA Medical College; PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration; Research Unit of Trauma Care, Tissue Repair and Regeneration, Chinese Academy of Medical Sciences, 2019RU051, Beijing 100048, P. R. China
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4
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Jeong SU, Song JS, Lee HJ, Sa HS, Cho KJ. Prognostic Significance of Tumor-Infiltrating Lymphocytes and High-Risk Human Papillomavirus in Ocular Sebaceous Carcinoma: A Comprehensive Analysis. Mod Pathol 2024; 37:100449. [PMID: 38369185 DOI: 10.1016/j.modpat.2024.100449] [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: 08/30/2023] [Revised: 02/01/2024] [Accepted: 02/06/2024] [Indexed: 02/20/2024]
Abstract
High-risk human papillomavirus (hrHPV) and tumor-infiltrating lymphocytes (TILs) are known to have prognostic significance in oropharyngeal squamous cell carcinoma. However, their significance in ocular sebaceous carcinoma (OSC) remains unverified because of the rarity of the condition. This study aimed to investigate the association between clinicopathologic features, biomarkers, and hrHPV infection and their potential to predict prognosis in OSC patients. We analyzed the clinicopathologic features of 81 OSC patients from Asan Medical Center between 2000 and 2022. Seventeen biomarkers and hrHPV were examined using immunohistochemistry and DNA in situ hybridization on tissue microarray cores. hrHPV was identified in 31 cases (38.3%). Univariate analysis revealed that hrHPV infection was associated with comedonecrosis (P = .032), high Ki-67 labeling index (≥30%, P = .042), lower expression of E-cadherin (P = .033), and loss of expression of zinc finger protein 750 (P = .023). Multivariate analysis revealed that loss of expression of zinc finger protein 750 (P = .026) remained an independently associated factor for hrHPV. Progression-free survival analysis was performed on 28 patients who were continuously observed for more than 5 years. During a median follow-up duration of 86 months, recurrence or metastasis developed in 14 patients (50%) within the survival cohort, occurring at a median time of 48 months after excision. Univariate analysis indicated that recurrence or metastasis was associated with tumor size (P = .010), high TILs (≥10%; P = .025), lymphovascular invasion (P = 0.043), site of origin (P = .025), and high expression of bcl-2-associated athanogene 3 (P = .039). Multivariate analysis demonstrated that high TILs (P = .017) and site of origin (P = .025) were independent prognostic factors. The prognosis of OSC was hrHPV-independent, and a better prognosis was associated with the site of origin in the order of the gland of Zeis, meibomian gland, and multicentric site, as well as with high TILs.
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Affiliation(s)
- Se Un Jeong
- Department of Pathology, Ewha Womans University Mokdong Hospital, Ewha Womans University College of Medicine, Seoul, Republic of Korea
| | - Joon Seon Song
- Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Hee Jin Lee
- Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Ho-Seok Sa
- Department of Ophthalmology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Kyung-Ja Cho
- Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea.
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5
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Bernabé-Rubio M, Ali S, Bhosale PG, Goss G, Mobasseri SA, Tapia-Rojo R, Zhu T, Hiratsuka T, Battilocchi M, Tomás IM, Ganier C, Garcia-Manyes S, Watt FM. Myc-dependent dedifferentiation of Gata6 + epidermal cells resembles reversal of terminal differentiation. Nat Cell Biol 2023; 25:1426-1438. [PMID: 37735598 PMCID: PMC10567550 DOI: 10.1038/s41556-023-01234-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Accepted: 08/16/2023] [Indexed: 09/23/2023]
Abstract
Dedifferentiation is the process by which terminally differentiated cells acquire the properties of stem cells. During mouse skin wound healing, the differentiated Gata6-lineage positive cells of the sebaceous duct are able to dedifferentiate. Here we have integrated lineage tracing and single-cell mRNA sequencing to uncover the underlying mechanism. Gata6-lineage positive and negative epidermal stem cells in wounds are transcriptionally indistinguishable. Furthermore, in contrast to reprogramming of induced pluripotent stem cells, the same genes are expressed in the epidermal dedifferentiation and differentiation trajectories, indicating that dedifferentiation does not involve adoption of a new cell state. We demonstrate that dedifferentiation is not only induced by wounding, but also by retinoic acid treatment or mechanical expansion of the epidermis. In all three cases, dedifferentiation is dependent on the master transcription factor c-Myc. Mechanotransduction and actin-cytoskeleton remodelling are key features of dedifferentiation. Our study elucidates the molecular basis of epidermal dedifferentiation, which may be generally applicable to adult tissues.
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Affiliation(s)
- Miguel Bernabé-Rubio
- Centre for Gene Therapy and Regenerative Medicine, King's College London, London, UK
| | - Shahnawaz Ali
- Centre for Gene Therapy and Regenerative Medicine, King's College London, London, UK
| | - Priyanka G Bhosale
- Centre for Gene Therapy and Regenerative Medicine, King's College London, London, UK
| | - Georgina Goss
- Centre for Gene Therapy and Regenerative Medicine, King's College London, London, UK
| | | | - Rafael Tapia-Rojo
- Department of Physics, Randall Centre for Cell and Molecular Biophysics, Centre for the Physical Science of Life and London Centre for Nanotechnology, King's College London, London, UK
- Single Molecule Mechanobiology Laboratory, The Francis Crick Institute, London, UK
| | - Tong Zhu
- Department of Physics, Randall Centre for Cell and Molecular Biophysics, Centre for the Physical Science of Life and London Centre for Nanotechnology, King's College London, London, UK
- Single Molecule Mechanobiology Laboratory, The Francis Crick Institute, London, UK
| | - Toru Hiratsuka
- Centre for Gene Therapy and Regenerative Medicine, King's College London, London, UK
- Department of Oncogenesis and Growth Regulation, Research Center, Osaka International Cancer Institute, Chuoku, Japan
| | - Matteo Battilocchi
- Centre for Gene Therapy and Regenerative Medicine, King's College London, London, UK
| | - Inês M Tomás
- Centre for Gene Therapy and Regenerative Medicine, King's College London, London, UK
| | - Clarisse Ganier
- Centre for Gene Therapy and Regenerative Medicine, King's College London, London, UK
| | - Sergi Garcia-Manyes
- Department of Physics, Randall Centre for Cell and Molecular Biophysics, Centre for the Physical Science of Life and London Centre for Nanotechnology, King's College London, London, UK
- Single Molecule Mechanobiology Laboratory, The Francis Crick Institute, London, UK
| | - Fiona M Watt
- Centre for Gene Therapy and Regenerative Medicine, King's College London, London, UK.
- Directors' Unit, EMBL Heidelberg, Heidelberg, Germany.
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6
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Oulès B, Deschamps L, Sohier P, Tihy M, Chassac A, Couvelard A, Frouin E, Battistella M. Diagnostic Accuracy of GATA6 Immunostaining in Sebaceous Tumors of the Skin. Mod Pathol 2023; 36:100101. [PMID: 36788082 DOI: 10.1016/j.modpat.2023.100101] [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: 12/05/2022] [Revised: 01/04/2023] [Accepted: 01/06/2023] [Indexed: 01/19/2023]
Abstract
The accurate diagnosis of skin adnexal neoplasms is sometimes challenging but is necessary because medical management and follow-up may differ between tumors. GATA6 transcription factor has been identified as a new marker of the upper folliculosebaceous compartment (lower infundibulum, junctional zone and isthmus, and upper sebaceous gland) in the human skin. We aimed to determine the diagnostic accuracy of GATA6 immunostaining to diagnose sebaceous tumors compared with that to diagnose other adnexal and nonadnexal cutaneous neoplasms. We conducted a retrospective, evaluator-nonblinded study comparing the reference standard (diagnosis by an expert dermatopathologist) with GATA6 immunostaining to identify sebaceous tumors in a cohort containing 234 different tumors. The GATA6 expression score was significatively higher in sebaceous than that in nonsebaceous tumors. In addition, tumors originating from the upper hair follicle showed positive results for GATA6 staining; however, they showed lower GATA6 expression scores. Detection of sebaceous tumors using GATA6 positivity had a sensitivity of 95.7% (95% confidence interval [95% CI], 85.8-99.2), specificity of 80.8% (95% CI, 74.5-85.8), positive predictive value of 55.6% (95% CI, 44.7-65.9), and negative predictive value of 98.7% (95% CI, 95.4-99.8). GATA6 showed similar sensitivity to adipophilin, the reference marker; however, the specificity of GATA6 was higher, as observed in a cohort of 106 tumors enriched in squamous cell carcinomas with clear-cell histology. In addition, GATA6 positivity was assessed in 39 sebaceous carcinomas and compared with epithelial membrane antigen (EMA), CK7, and androgen receptor (AR) staining results. Although CK7 staining displayed lower diagnostic performances, GATA6 staining showed comparable results as EMA and AR. Finally, we found GATA6 expression in skin metastases of gastrointestinal origin, whereas GATA6 was absent in metastases originating from breast or lung cancers. Overall, our work identified GATA6 immunostaining as a new diagnostic tool for sebaceous tumors.
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Affiliation(s)
- Bénédicte Oulès
- Cutaneous Biology Lab, Institut Cochin, INSERM U1016, UMR 8104, Paris, France; Department of Dermatology, Hôpital Cochin, AP-HP Centre-Université Paris Cité, Paris, France; Faculté de Médecine Paris Centre Santé, University Paris Cité, Paris, France
| | - Lydia Deschamps
- Department of Pathology, Hôpital Bichat, AP-HP Nord-Université Paris Cité, Paris, France; CARADERM, French Network of Rare Cutaneous Cancers, Lille, France
| | - Pierre Sohier
- Cutaneous Biology Lab, Institut Cochin, INSERM U1016, UMR 8104, Paris, France; Faculté de Médecine Paris Centre Santé, University Paris Cité, Paris, France; CARADERM, French Network of Rare Cutaneous Cancers, Lille, France; Department of Pathology, Hôpital Cochin, AP-HP Centre-Université Paris Cité, Paris, France
| | - Matthieu Tihy
- Department of Pathology, Hôpitaux Universitaires Genève, Geneva, Switzerland
| | - Anaïs Chassac
- Department of Pathology, Hôpital Bichat, AP-HP Nord-Université Paris Cité, Paris, France
| | - Anne Couvelard
- Faculté de Médecine Paris Centre Santé, University Paris Cité, Paris, France; Department of Pathology, Hôpital Bichat, AP-HP Nord-Université Paris Cité, Paris, France; Centre de Recherche sur l'Inflammation, INSERM UMR1149, Faculté de Médecine Bichat, Paris, France
| | - Eric Frouin
- CARADERM, French Network of Rare Cutaneous Cancers, Lille, France; Department of Pathology, Centre Hospitalier Universitaire Poitiers, Poitiers, France
| | - Maxime Battistella
- Faculté de Médecine Paris Centre Santé, University Paris Cité, Paris, France; CARADERM, French Network of Rare Cutaneous Cancers, Lille, France; Department of Pathology, Hôpital Saint Louis, AP-HP Nord-Université Paris Cité, Paris, France; Onco-dermatology and Therapies Lab, Human Immunology, Pathophysiology, Immunotherapy, INSERM U976, Paris, France.
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7
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Zouboulis CC, Coenye T, He L, Kabashima K, Kobayashi T, Niemann C, Nomura T, Oláh A, Picardo M, Quist SR, Sasano H, Schneider MR, Törőcsik D, Wong SY. Sebaceous immunobiology - skin homeostasis, pathophysiology, coordination of innate immunity and inflammatory response and disease associations. Front Immunol 2022; 13:1029818. [PMID: 36439142 PMCID: PMC9686445 DOI: 10.3389/fimmu.2022.1029818] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Accepted: 10/17/2022] [Indexed: 08/01/2023] Open
Abstract
This review presents several aspects of the innovative concept of sebaceous immunobiology, which summarizes the numerous activities of the sebaceous gland including its classical physiological and pathophysiological tasks, namely sebum production and the development of seborrhea and acne. Sebaceous lipids, which represent 90% of the skin surface lipids in adolescents and adults, are markedly involved in the skin barrier function and perifollicular and dermal innate immune processes, leading to inflammatory skin diseases. Innovative experimental techniques using stem cell and sebocyte models have clarified the roles of distinct stem cells in sebaceous gland physiology and sebocyte function control mechanisms. The sebaceous gland represents an integral part of the pilosebaceous unit and its status is connected to hair follicle morphogenesis. Interestingly, professional inflammatory cells contribute to sebocyte differentiation and homeostasis, whereas the regulation of sebaceous gland function by immune cells is antigen-independent. Inflammation is involved in the very earliest differentiation changes of the pilosebaceous unit in acne. Sebocytes behave as potent immune regulators, integrating into the innate immune responses of the skin. Expressing inflammatory mediators, sebocytes also contribute to the polarization of cutaneous T cells towards the Th17 phenotype. In addition, the immune response of the perifollicular infiltrate depends on factors produced by the sebaceous glands, mostly sebaceous lipids. Human sebocytes in vitro express functional pattern recognition receptors, which are likely to interact with bacteria in acne pathogenesis. Sex steroids, peroxisome proliferator-activated receptor ligands, neuropeptides, endocannabinoids and a selective apoptotic process contribute to a complex regulation of sebocyte-induced immunological reaction in numerous acquired and congenital skin diseases, including hair diseases and atopic dermatitis.
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Affiliation(s)
- Christos C. Zouboulis
- Departments of Dermatology, Venereology, Allergology and Immunology, Dessau Medical Center, Brandenburg Medical School Theodor Fontane and Faculty of Health Sciences Brandenburg, Dessau, Germany
| | - Tom Coenye
- Laboratory of Pharmaceutical Microbiology, Ghent University, Ghent, Belgium
| | - Li He
- Department of Dermatology, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Kenji Kabashima
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Tetsuro Kobayashi
- Laboratory for Innate Immune Systems, RIKEN Center for Integrative Medical Sciences (IMS), Yokohama, Kanagawa, Japan
| | - Catherin Niemann
- Center for Molecular Medicine Cologne, CMMC Research Institute, University of Cologne, Cologne, Germany
- Center for Biochemistry, Medical Faculty, University of Cologne, Cologne, Germany
| | - Takashi Nomura
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Attila Oláh
- Department of Physiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Mauro Picardo
- San Gallicano Dermatologic Institute, IRCCS, Rome, Italy
| | - Sven R. Quist
- Department of Dermatology, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - Hironobu Sasano
- Department of Pathology, Tohoku University School of Medicine, Sendai, Japan
| | - Marlon R. Schneider
- Institute of Veterinary Physiology, Faculty of Veterinary Medicine, University of Leipzig, Leipzig, Germany
| | - Daniel Törőcsik
- Department of Dermatology, Faculty of Medicine, University of Debrecen and ELKH-DE Allergology Research Group, Debrecen, Hungary
| | - Sunny Y. Wong
- Departments of Dermatology and Cell and Developmental Biology, University of Michigan, Ann Arbor, MI, United States
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8
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Sipilä K, Rognoni E, Jokinen J, Tewary M, Vietri Rudan M, Talvi S, Jokinen V, Dahlström KM, Liakath-Ali K, Mobasseri A, Du-Harpur X, Käpylä J, Nutt SL, Salminen TA, Heino J, Watt FM. Embigin is a fibronectin receptor that affects sebaceous gland differentiation and metabolism. Dev Cell 2022; 57:1453-1465.e7. [PMID: 35671757 PMCID: PMC9616737 DOI: 10.1016/j.devcel.2022.05.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 03/19/2022] [Accepted: 05/16/2022] [Indexed: 12/25/2022]
Abstract
Stem cell renewal and differentiation are regulated by interactions with the niche. Although multiple cell populations have been identified in distinct anatomical compartments, little is known about niche-specific molecular factors. Using skin as a model system and combining single-cell RNA-seq data analysis, immunofluorescence, and transgenic mouse models, we show that the transmembrane protein embigin is specifically expressed in the sebaceous gland and that the number of embigin-expressing cells is negatively regulated by Wnt. The loss of embigin promotes exit from the progenitor compartment and progression toward differentiation, and also compromises lipid metabolism. Embigin modulates sebaceous niche architecture by affecting extracellular matrix organization and basolateral targeting of monocarboxylate transport. We discover through ligand screening that embigin is a direct fibronectin receptor, binding to the N-terminal fibronectin domain without impairing integrin function. Our results solve the long-standing question of how embigin regulates cell adhesion and demonstrate a mechanism that couples adhesion and metabolism.
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Affiliation(s)
- Kalle Sipilä
- Centre for Gene Therapy & Regenerative Medicine, King's College London, London SE1 9RT, UK
| | - Emanuel Rognoni
- Centre for Cell Biology and Cutaneous Research, Blizard Institute, Faculty of Medicine and Dentistry, Queen Mary University of London, London E1 2AT, UK
| | - Johanna Jokinen
- Department of Life Technologies, University of Turku, Turku 20014, Finland
| | - Mukul Tewary
- Centre for Gene Therapy & Regenerative Medicine, King's College London, London SE1 9RT, UK
| | - Matteo Vietri Rudan
- Centre for Gene Therapy & Regenerative Medicine, King's College London, London SE1 9RT, UK
| | - Salli Talvi
- Department of Life Technologies, University of Turku, Turku 20014, Finland
| | - Ville Jokinen
- Department of Life Technologies, University of Turku, Turku 20014, Finland
| | - Käthe M Dahlström
- Structural Bioinformatics Laboratory, InFLAMES Research Flagship Center, Faculty of Science and Engineering, Åbo Akademi University, Turku 20520, Finland
| | - Kif Liakath-Ali
- Department of Molecular and Cellular Physiology, Stanford University, Stanford, CA 94305, USA
| | - Atefeh Mobasseri
- Centre for Gene Therapy & Regenerative Medicine, King's College London, London SE1 9RT, UK
| | - Xinyi Du-Harpur
- Centre for Gene Therapy & Regenerative Medicine, King's College London, London SE1 9RT, UK; The Francis Crick Institute, London NW1 1AT, UK
| | - Jarmo Käpylä
- Department of Life Technologies, University of Turku, Turku 20014, Finland
| | - Stephen L Nutt
- The Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, VIC 3052, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC 3010, Australia
| | - Tiina A Salminen
- Structural Bioinformatics Laboratory, InFLAMES Research Flagship Center, Faculty of Science and Engineering, Åbo Akademi University, Turku 20520, Finland
| | - Jyrki Heino
- Department of Life Technologies, University of Turku, Turku 20014, Finland
| | - Fiona M Watt
- Centre for Gene Therapy & Regenerative Medicine, King's College London, London SE1 9RT, UK; European Molecular Biology Laboratory, Heidelberg 69117, Germany.
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9
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Cheng AY, Lan J, Lee CH. Impaired Wnt/beta-catenin and protein patched homolog 1 signaling in extraocular sebaceous carcinoma: A clinical and histopathological study. J Dermatol 2022; 49:600-606. [PMID: 35318716 DOI: 10.1111/1346-8138.16351] [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: 12/13/2021] [Revised: 02/07/2022] [Accepted: 02/22/2022] [Indexed: 11/29/2022]
Abstract
Sebaceous carcinoma (SC) is a rare malignant neoplasm with sebaceous differentiation. SC is classified into eyelid and extraocular SC clinically. Most studies have focused on the eyelid SC in terms of pathogenesis, treatment, and prognosis. In skin, Wnt/beta-catenin and hedgehog signaling are two major pathways in sebaceous differentiation. We aimed to characterize the clinical and histopathological features of extraocular SC and to measure the expression of beta-catenin, lymphoid enhancer-binding factor 1 (LEF1), sonic hedgehog (Shh), and protein patched homolog 1 (PTCH) in extraocular SC. Ten cases of extraocular SC were identified from 2007 to 2020. The clinical features, microscopic findings, and prognosis were analyzed. Immunohistochemical stain for beta-catenin, LEF1, Shh, and PTCH were performed in extraocular SC and other benign sebaceous tumors including sebaceous hyperplasia, sebaceous adenoma, and sebaceoma. The male:female ratio was 4:6. The median onset age was 73.5 years (range, 43-88). Seven patients out of 10 were diagnosed after 60 years. Most extraocular SC were located on the head and neck with indurated plaque. Two patients had concurrent internal cancers and three patients showed lymph node metastasis at time of presentation. Five-year overall-survival was 40%. Beta-catenin was expressed membranously in all sebaceous hyperplasia, but was expressed variably in extraocular SC (1/5). While LEF1 was unequivocally expressed in normal hair follicles, LEF1 expression was absent in all extraocular SC and benign sebaceous tumors. Regarding the sonic hedgehog signaling, Shh and PTCH were all expressed in the cytoplasm of sebaceous hyperplasia, sebaceous adenoma, and sebaceoma. In contrast, PTCH was absent in all cases of extraocular SC and only 50% of the extraocular SC expressed cytoplasmic Shh. To conclude, extraocular SC commonly affects facial skin in the elderly. Inactivated Wnt/beta-catenin and aberrant hedgehog pathway may contribute to the carcinogenesis of extraocular SC. Further studies may be required to elucidate the causative mechanism of these pathways in extraocular SC.
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Affiliation(s)
- An-Yu Cheng
- Department of Dermatology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Jui Lan
- Department of Anatomic Pathology, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan
| | - Chih-Hung Lee
- Department of Dermatology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
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10
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Li KN, Tumbar T. Hair follicle stem cells as a skin-organizing signaling center during adult homeostasis. EMBO J 2021; 40:e107135. [PMID: 33880808 PMCID: PMC8167365 DOI: 10.15252/embj.2020107135] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 12/16/2020] [Accepted: 02/09/2021] [Indexed: 12/12/2022] Open
Abstract
Stem cells are the essential source of building blocks for tissue homeostasis and regeneration. Their behavior is dictated by both cell-intrinsic cues and extrinsic cues from the microenvironment, known as the stem cell niche. Interestingly, recent work began to demonstrate that hair follicle stem cells (HFSCs) are not only passive recipients of signals from the surroundings, but also actively send out signals to modulate the organization and function of their own niches. Here, we discuss recent findings, and briefly refer to the old, on the interaction of HFSCs and their niches with the emphasis on the outwards signals from HFSCs toward their niches. We also highlight recent technology advancements that further promote our understanding of HFSC niches. Taken together, the HFSCs emerge as a skin-organizing center rich in signaling output for niche remodeling during various stages of adult skin homeostasis. The intricate crosstalk between HFSCs and their niches adds important insight to skin biology that will inform clinical and bioengineering fields aiming to build complete and functional 3D organotypic cultures for skin replacement therapies.
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Affiliation(s)
- Kefei Nina Li
- Molecular Biology and GeneticsCornell UniversityIthacaNYUSA
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11
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Geueke A, Niemann C. Stem and progenitor cells in sebaceous gland development, homeostasis and pathologies. Exp Dermatol 2021; 30:588-597. [PMID: 33599012 DOI: 10.1111/exd.14303] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 02/04/2021] [Accepted: 02/14/2021] [Indexed: 12/11/2022]
Abstract
Sebaceous glands (SGs), typically associated with hair follicles, are critical for the homeostasis and function of mammalian skin. The main physiological function of SGs is the production and holocrine secretion of sebum to lubricate and protect the skin. Defective SGs have been linked to a variety of skin disorders, including acne, seborrheic dermatitis and formation of sebaceous tumors. Thus, a better understanding how SGs are formed and maintained is important to unravel the underlying molecular and cellular mechanisms of SG pathologies and to find better and effective therapies. Over the last two decades, research has come a long way from the initial identification of skin epithelial stem cells to the isolation and functional characterization of multiple stem cell pools as well as a better understanding of their unique and complex activities that drive skin homeostasis and operate in skin pathologies. Here, we discuss recent progress in unravelling cellular mechanisms underlying SG development, homeostasis and sebaceous tumor formation and assess the role of stem and progenitor cells in controlling SG physiology and disease processes. The development of elegant in vivo imaging as well as various in vitro and ex vivo stem cell and SG tissue models will advance mechanistic studies on SG function and allow drug screening and testing for efficient and successful targeting SG pathologies.
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Affiliation(s)
- Anna Geueke
- Center for Molecular Medicine Cologne, CMMC Research Institute, University of Cologne, Cologne, Germany
| | - Catherin Niemann
- Center for Molecular Medicine Cologne, CMMC Research Institute, University of Cologne, Cologne, Germany.,Center for Biochemistry, Medical Faculty, University of Cologne, Cologne, Germany
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12
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Development and Maintenance of Epidermal Stem Cells in Skin Adnexa. Int J Mol Sci 2020; 21:ijms21249736. [PMID: 33419358 PMCID: PMC7766199 DOI: 10.3390/ijms21249736] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 12/18/2020] [Accepted: 12/18/2020] [Indexed: 01/10/2023] Open
Abstract
The skin surface is modified by numerous appendages. These structures arise from epithelial stem cells (SCs) through the induction of epidermal placodes as a result of local signalling interplay with mesenchymal cells based on the Wnt–(Dkk4)–Eda–Shh cascade. Slight modifications of the cascade, with the participation of antagonistic signalling, decide whether multipotent epidermal SCs develop in interfollicular epidermis, scales, hair/feather follicles, nails or skin glands. This review describes the roles of epidermal SCs in the development of skin adnexa and interfollicular epidermis, as well as their maintenance. Each skin structure arises from distinct pools of epidermal SCs that are harboured in specific but different niches that control SC behaviour. Such relationships explain differences in marker and gene expression patterns between particular SC subsets. The activity of well-compartmentalized epidermal SCs is orchestrated with that of other skin cells not only along the hair cycle but also in the course of skin regeneration following injury. This review highlights several membrane markers, cytoplasmic proteins and transcription factors associated with epidermal SCs.
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13
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Mesler AL, Benedeck RE, Wong SY. Preparing the hair follicle canal for hair shaft emergence. Exp Dermatol 2020; 30:472-478. [PMID: 33025661 DOI: 10.1111/exd.14210] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 09/15/2020] [Accepted: 09/30/2020] [Indexed: 12/17/2022]
Abstract
The emergence of hair is a defining event during mammalian skin development, but the cellular mechanisms leading to the opening of the hair follicle canal remain poorly characterized. Our previous studies have shown that early hair buds possess a central column of differentiated keratinocytes expressing Keratin 79 (K79), which marks the future hair follicle opening. Here, we report that during late embryogenesis and early postnatal development, K79+ cells at the distal tips of these columns downregulate E-cadherin, change shape, recede and undergo cell death. These changes likely occur independently of sebaceous glands and the growing hair shaft, and serve to create an orifice for hair to subsequently emerge. Defects in this process may underlie phenomena such as ingrown hair or may potentially contribute to upper hair follicle pathologies including acne, hidradenitis suppurativa and infundibular cysts.
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Affiliation(s)
- Arlee L Mesler
- Departments of Dermatology, and Cell and Developmental Biology, University of Michigan, Ann Arbor, MI, USA
| | - Rachel E Benedeck
- Departments of Dermatology, and Cell and Developmental Biology, University of Michigan, Ann Arbor, MI, USA
| | - Sunny Y Wong
- Departments of Dermatology, and Cell and Developmental Biology, University of Michigan, Ann Arbor, MI, USA
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14
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Contribution of GATA6 to homeostasis of the human upper pilosebaceous unit and acne pathogenesis. Nat Commun 2020; 11:5067. [PMID: 33082341 PMCID: PMC7575575 DOI: 10.1038/s41467-020-18784-z] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Accepted: 09/14/2020] [Indexed: 02/07/2023] Open
Abstract
Although acne is the most common human inflammatory skin disease, its pathogenic mechanisms remain incompletely understood. Here we show that GATA6, which is expressed in the upper pilosebaceous unit of normal human skin, is down-regulated in acne. GATA6 controls keratinocyte proliferation and differentiation to prevent hyperkeratinisation of the infundibulum, which is the primary pathological event in acne. When overexpressed in immortalised human sebocytes, GATA6 triggers a junctional zone and sebaceous differentiation program whilst limiting lipid production and cell proliferation. It modulates the immunological repertoire of sebocytes, notably by upregulating PD-L1 and IL10. GATA6 expression contributes to the therapeutic effect of retinoic acid, the main treatment for acne. In a human sebaceous organoid model GATA6-mediated down-regulation of the infundibular differentiation program is mediated by induction of TGFβ signalling. We conclude that GATA6 is involved in regulation of the upper pilosebaceous unit and may be an actionable target in the treatment of acne.
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15
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Niche-Specific Factors Dynamically Regulate Sebaceous Gland Stem Cells in the Skin. Dev Cell 2019; 51:326-340.e4. [PMID: 31564613 DOI: 10.1016/j.devcel.2019.08.015] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 05/22/2019] [Accepted: 08/23/2019] [Indexed: 12/22/2022]
Abstract
Oil-secreting sebaceous glands (SGs) are critical for proper skin function; however, it remains unclear how different factors act together to modulate SG stem cells. Here, we provide functional evidence that each SG lobe is serviced by its own dedicated stem cell population. Upon ablating Notch signaling in different skin subcompartments, we find that this pathway exerts dual counteracting effects on SGs. Suppressing Notch in SG progenitors traps them in a hybrid state where stem and differentiation features become intermingled. In contrast, ablating Notch outside of the SG stem cell compartment indirectly drives SG expansion. Finally, we report that a K14:K5→K14:K79 keratin shift occurs during SG differentiation. Deleting K79 destabilizes K14 in sebocytes, and attenuates SGs and eyelid meibomian glands, leading to corneal ulceration. Altogether, our findings demonstrate that SGs integrate diverse signals from different niches and suggest that mutations incurred within one stem cell compartment can indirectly influence another.
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16
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Sun Z, Yan B. Multiple roles and regulatory mechanisms of the transcription factor GATA6 in human cancers. Clin Genet 2019; 97:64-72. [PMID: 31437305 DOI: 10.1111/cge.13630] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 08/13/2019] [Accepted: 08/20/2019] [Indexed: 12/24/2022]
Abstract
Cancer is a common type of non-communicable disease, and its morbidity and mortality are rapidly increasing. It is expected to become the largest obstacle to the promotion of global human health in the future. Some transcription factors that play important regulatory roles in embryogenesis and subsequent tissue maintenance can be selectively amplified during tumorigenesis. Due to its high expression in the embryonic endoderm and mesoderm, GATA6 plays a crucial role in the normal development of early human heart, lung, digestive system, adrenal glands, breasts, ovaries, retina, skin, and nervous system. Up to now, overexpression of the GATA6 gene has been shown to play an important role in several cancers, including lung cancer, digestive system tumors, breast cancer, and ovarian cancer. However, the human body is a complex organism, which causes the transcription factor GATA6 to have multiple roles in cancer. In this review, we summarize the multiple roles of transcription factor GATA6 in various cancers and its regulatory mechanisms. The aim is to better understand the relationship between GATA6 gene expression and cancer development and to provide new insights for exploring potential therapeutic targets.
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Affiliation(s)
- Zhaoqing Sun
- Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Bo Yan
- Shandong Provincial Key Laboratory of Cardiac Disease Diagnosis and Treatment, Affiliated Hospital of Jining Medical University, Jining Medical University, Jining, Shandong, China.,The Center for Molecular Genetics of Cardiovascular Diseases, Affiliated Hospital of Jining Medical University, Jining Medical University, Jining, Shandong, China.,Shandong Provincial Sino-US Cooperation Research Center for Translational Medicine, Affiliated Hospital of Jining Medical University, Jining Medical University, Jining, Shandong, China
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17
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Andersen MS, Hannezo E, Ulyanchenko S, Estrach S, Antoku Y, Pisano S, Boonekamp KE, Sendrup S, Maimets M, Pedersen MT, Johansen JV, Clement DL, Feral CC, Simons BD, Jensen KB. Tracing the cellular dynamics of sebaceous gland development in normal and perturbed states. Nat Cell Biol 2019; 21:924-932. [PMID: 31358966 PMCID: PMC6978139 DOI: 10.1038/s41556-019-0362-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2018] [Accepted: 06/18/2019] [Indexed: 12/12/2022]
Abstract
The sebaceous gland (SG) is an essential component of the skin, and SG dysfunction is debilitating1,2. Yet, the cellular bases for its origin, development and subsequent maintenance remain poorly understood. Here, we apply large-scale quantitative fate mapping to define the patterns of cell fate behaviour during SG development and maintenance. We show that the SG develops from a defined number of lineage-restricted progenitors that undergo a programme of independent and stochastic cell fate decisions. Following an expansion phase, equipotent progenitors transition into a phase of homeostatic turnover, which is correlated with changes in the mechanical properties of the stroma and spatial restrictions on gland size. Expression of the oncogene KrasG12D results in a release from these constraints and unbridled gland expansion. Quantitative clonal fate analysis reveals that, during this phase, the primary effect of the Kras oncogene is to drive a constant fate bias with little effect on cell division rates. These findings provide insight into the developmental programme of the SG, as well as the mechanisms that drive tumour progression and gland dysfunction.
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Affiliation(s)
- Marianne Stemann Andersen
- BRIC-Biotech Research and Innovation Centre, University of Copenhagen, Copenhagen, Denmark
- Novo Nordisk Foundation Center for Stem Cell Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Edouard Hannezo
- Cavendish Laboratory, Department of Physics, University of Cambridge, Cambridge, UK
- The Wellcome Trust/Cancer Research UK Gurdon Institute, University of Cambridge, Cambridge, UK
- The Wellcome Trust/Medical Research Council Stem Cell Institute, University of Cambridge, Cambridge, UK
| | - Svetlana Ulyanchenko
- BRIC-Biotech Research and Innovation Centre, University of Copenhagen, Copenhagen, Denmark
- Novo Nordisk Foundation Center for Stem Cell Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Soline Estrach
- Institut National de la Santé et de la Recherche Médicale (INSERM) U1081, Centre National de la Recherche Scientifique UMR 7284, Université Cote d'Azur, Institute for Research on Cancer and Aging, Nice (IRCAN), Nice, France
| | - Yasuko Antoku
- BRIC-Biotech Research and Innovation Centre, University of Copenhagen, Copenhagen, Denmark
| | - Sabrina Pisano
- Institut National de la Santé et de la Recherche Médicale (INSERM) U1081, Centre National de la Recherche Scientifique UMR 7284, Université Cote d'Azur, Institute for Research on Cancer and Aging, Nice (IRCAN), Nice, France
| | - Kim E Boonekamp
- BRIC-Biotech Research and Innovation Centre, University of Copenhagen, Copenhagen, Denmark
| | - Sarah Sendrup
- BRIC-Biotech Research and Innovation Centre, University of Copenhagen, Copenhagen, Denmark
| | - Martti Maimets
- BRIC-Biotech Research and Innovation Centre, University of Copenhagen, Copenhagen, Denmark
- Novo Nordisk Foundation Center for Stem Cell Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Marianne Terndrup Pedersen
- BRIC-Biotech Research and Innovation Centre, University of Copenhagen, Copenhagen, Denmark
- Novo Nordisk Foundation Center for Stem Cell Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Jens V Johansen
- BRIC-Biotech Research and Innovation Centre, University of Copenhagen, Copenhagen, Denmark
| | - Ditte L Clement
- BRIC-Biotech Research and Innovation Centre, University of Copenhagen, Copenhagen, Denmark
- Novo Nordisk Foundation Center for Stem Cell Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Chloe C Feral
- Institut National de la Santé et de la Recherche Médicale (INSERM) U1081, Centre National de la Recherche Scientifique UMR 7284, Université Cote d'Azur, Institute for Research on Cancer and Aging, Nice (IRCAN), Nice, France
| | - Benjamin D Simons
- Cavendish Laboratory, Department of Physics, University of Cambridge, Cambridge, UK.
- The Wellcome Trust/Cancer Research UK Gurdon Institute, University of Cambridge, Cambridge, UK.
- The Wellcome Trust/Medical Research Council Stem Cell Institute, University of Cambridge, Cambridge, UK.
| | - Kim B Jensen
- BRIC-Biotech Research and Innovation Centre, University of Copenhagen, Copenhagen, Denmark.
- Novo Nordisk Foundation Center for Stem Cell Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
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