1
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Falckenhayn C, Bienkowska A, Söhle J, Wegner K, Raddatz G, Kristof B, Kuck D, Siegner R, Kaufmann R, Korn J, Baumann S, Lange D, Schepky A, Völzke H, Kaderali L, Winnefeld M, Lyko F, Grönniger E. Identification of dihydromyricetin as a natural DNA methylation inhibitor with rejuvenating activity in human skin. Front Aging 2024; 4:1258184. [PMID: 38500495 PMCID: PMC10944877 DOI: 10.3389/fragi.2023.1258184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Accepted: 12/12/2023] [Indexed: 03/20/2024]
Abstract
Changes in DNA methylation patterning have been reported to be a key hallmark of aged human skin. The altered DNA methylation patterns are correlated with deregulated gene expression and impaired tissue functionality, leading to the well-known skin aging phenotype. Searching for small molecules, which correct the aged methylation pattern therefore represents a novel and attractive strategy for the identification of anti-aging compounds. DNMT1 maintains epigenetic information by copying methylation patterns from the parental (methylated) strand to the newly synthesized strand after DNA replication. We hypothesized that a modest inhibition of this process promotes the restoration of the ground-state epigenetic pattern, thereby inducing rejuvenating effects. In this study, we screened a library of 1800 natural substances and 640 FDA-approved drugs and identified the well-known antioxidant and anti-inflammatory molecule dihydromyricetin (DHM) as an inhibitor of the DNA methyltransferase DNMT1. DHM is the active ingredient of several plants with medicinal use and showed robust inhibition of DNMT1 in biochemical assays. We also analyzed the effect of DHM in cultivated keratinocytes by array-based methylation profiling and observed a moderate, but significant global hypomethylation effect upon treatment. To further characterize DHM-induced methylation changes, we used published DNA methylation clocks and newly established age predictors to demonstrate that the DHM-induced methylation change is associated with a reduction in the biological age of the cells. Further studies also revealed re-activation of age-dependently hypermethylated and silenced genes in vivo and a reduction in age-dependent epidermal thinning in a 3-dimensional skin model. Our findings thus establish DHM as an epigenetic inhibitor with rejuvenating effects for aged human skin.
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Affiliation(s)
| | - Agata Bienkowska
- Beiersdorf AG, Research and Development, Hamburg, Germany
- Institute for Bioinformatics, University Medicine Greifswald, Greifswald, Germany
| | - Jörn Söhle
- Beiersdorf AG, Research and Development, Hamburg, Germany
| | - Katrin Wegner
- Beiersdorf AG, Research and Development, Hamburg, Germany
| | - Guenter Raddatz
- Division of Epigenetics, DKFZ-ZMBH Alliance, German Cancer Research Center, Heidelberg, Germany
| | - Boris Kristof
- Beiersdorf AG, Research and Development, Hamburg, Germany
| | - Dirk Kuck
- Division of Epigenetics, DKFZ-ZMBH Alliance, German Cancer Research Center, Heidelberg, Germany
| | - Ralf Siegner
- Beiersdorf AG, Research and Development, Hamburg, Germany
| | - Ronny Kaufmann
- Beiersdorf AG, Research and Development, Hamburg, Germany
| | - Julia Korn
- Beiersdorf AG, Research and Development, Hamburg, Germany
| | - Sascha Baumann
- Beiersdorf AG, Research and Development, Hamburg, Germany
| | - Daniela Lange
- Beiersdorf AG, Research and Development, Hamburg, Germany
| | | | - Henry Völzke
- Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Lars Kaderali
- Institute for Bioinformatics, University Medicine Greifswald, Greifswald, Germany
| | - Marc Winnefeld
- Beiersdorf AG, Research and Development, Hamburg, Germany
| | - Frank Lyko
- Division of Epigenetics, DKFZ-ZMBH Alliance, German Cancer Research Center, Heidelberg, Germany
| | - Elke Grönniger
- Beiersdorf AG, Research and Development, Hamburg, Germany
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2
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Bienkowska A, Raddatz G, Söhle J, Kristof B, Völzke H, Gallinat S, Lyko F, Kaderali L, Winnefeld M, Grönniger E, Falckenhayn C. Development of an epigenetic clock to predict visual age progression of human skin. Front Aging 2024; 4:1258183. [PMID: 38274286 PMCID: PMC10809641 DOI: 10.3389/fragi.2023.1258183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Accepted: 11/28/2023] [Indexed: 01/27/2024]
Abstract
Aging is a complex process characterized by the gradual decline of physiological functions, leading to increased vulnerability to age-related diseases and reduced quality of life. Alterations in DNA methylation (DNAm) patterns have emerged as a fundamental characteristic of aged human skin, closely linked to the development of the well-known skin aging phenotype. These changes have been correlated with dysregulated gene expression and impaired tissue functionality. In particular, the skin, with its visible manifestations of aging, provides a unique model to study the aging process. Despite the importance of epigenetic age clocks in estimating biological age based on the correlation between methylation patterns and chronological age, a second-generation epigenetic age clock, which correlates DNAm patterns with a particular phenotype, specifically tailored to skin tissue is still lacking. In light of this gap, we aimed to develop a novel second-generation epigenetic age clock explicitly designed for skin tissue to facilitate a deeper understanding of the factors contributing to individual variations in age progression. To achieve this, we used methylation patterns from more than 370 female volunteers and developed the first skin-specific second-generation epigenetic age clock that accurately predicts the skin aging phenotype represented by wrinkle grade, visual facial age, and visual age progression, respectively. We then validated the performance of our clocks on independent datasets and demonstrated their broad applicability. In addition, we integrated gene expression and methylation data from independent studies to identify potential pathways contributing to skin age progression. Our results demonstrate that our epigenetic age clock, VisAgeX, specifically predicting visual age progression, not only captures known biological pathways associated with skin aging, but also adds novel pathways associated with skin aging.
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Affiliation(s)
- Agata Bienkowska
- Beiersdorf AG, Research and Development, Hamburg, Germany
- Institute for Bioinformatics, University Medicine Greifswald, Greifswald, Germany
| | - Günter Raddatz
- Division of Epigenetics, DKFZ-ZMBH Alliance, German Cancer Research Center, Heidelberg, Germany
| | - Jörn Söhle
- Beiersdorf AG, Research and Development, Hamburg, Germany
| | - Boris Kristof
- Beiersdorf AG, Research and Development, Hamburg, Germany
| | - Henry Völzke
- Institute for Community Medicine, SHIP/KEF, University Medicine Greifswald, Greifswald, Germany
| | | | - Frank Lyko
- Division of Epigenetics, DKFZ-ZMBH Alliance, German Cancer Research Center, Heidelberg, Germany
| | - Lars Kaderali
- Institute for Bioinformatics, University Medicine Greifswald, Greifswald, Germany
| | - Marc Winnefeld
- Beiersdorf AG, Research and Development, Hamburg, Germany
| | - Elke Grönniger
- Beiersdorf AG, Research and Development, Hamburg, Germany
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3
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Völzke H, Schössow J, Schmidt CO, Jürgens C, Richter A, Werner A, Werner N, Radke D, Teumer A, Ittermann T, Schauer B, Henck V, Friedrich N, Hannemann A, Winter T, Nauck M, Dörr M, Bahls M, Felix SB, Stubbe B, Ewert R, Frost F, Lerch MM, Grabe HJ, Bülow R, Otto M, Hosten N, Rathmann W, Schminke U, Großjohann R, Tost F, Homuth G, Völker U, Weiss S, Holtfreter S, Bröker BM, Zimmermann K, Kaderali L, Winnefeld M, Kristof B, Berger K, Samietz S, Schwahn C, Holtfreter B, Biffar R, Kindler S, Wittfeld K, Hoffmann W, Kocher T. Cohort Profile Update: The Study of Health in Pomerania (SHIP). Int J Epidemiol 2022; 51:e372-e383. [PMID: 35348705 DOI: 10.1093/ije/dyac034] [Citation(s) in RCA: 61] [Impact Index Per Article: 30.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Accepted: 02/25/2022] [Indexed: 12/16/2022] Open
Affiliation(s)
- Henry Völzke
- Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany.,German Centre for Cardiovascular Research (DZHK), Partner Site Greifswald, Greifswald, Germany
| | - Janka Schössow
- Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany
| | | | - Clemens Jürgens
- Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Adrian Richter
- Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany
| | - André Werner
- Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Nicole Werner
- Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Dörte Radke
- Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Alexander Teumer
- Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany.,German Centre for Cardiovascular Research (DZHK), Partner Site Greifswald, Greifswald, Germany
| | - Till Ittermann
- Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Birgit Schauer
- Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Vivien Henck
- Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Nele Friedrich
- Institute of Clinical Chemistry and Laboratory Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Anke Hannemann
- German Centre for Cardiovascular Research (DZHK), Partner Site Greifswald, Greifswald, Germany.,Institute of Clinical Chemistry and Laboratory Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Theresa Winter
- Institute of Clinical Chemistry and Laboratory Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Matthias Nauck
- German Centre for Cardiovascular Research (DZHK), Partner Site Greifswald, Greifswald, Germany.,Institute of Clinical Chemistry and Laboratory Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Marcus Dörr
- German Centre for Cardiovascular Research (DZHK), Partner Site Greifswald, Greifswald, Germany.,Department of Internal Medicine B, University Medicine Greifswald, Greifswald, Germany
| | - Martin Bahls
- German Centre for Cardiovascular Research (DZHK), Partner Site Greifswald, Greifswald, Germany.,Department of Internal Medicine B, University Medicine Greifswald, Greifswald, Germany
| | - Stephan B Felix
- German Centre for Cardiovascular Research (DZHK), Partner Site Greifswald, Greifswald, Germany.,Department of Internal Medicine B, University Medicine Greifswald, Greifswald, Germany
| | - Beate Stubbe
- Department of Internal Medicine B, University Medicine Greifswald, Greifswald, Germany
| | - Ralf Ewert
- Department of Internal Medicine B, University Medicine Greifswald, Greifswald, Germany
| | - Fabian Frost
- Department of Medicine A, University Medicine Greifswald, Greifswald, Germany
| | - Markus M Lerch
- Department of Medicine A, University Medicine Greifswald, Greifswald, Germany
| | - Hans J Grabe
- Clinic of Psychiatry and Psychotherapy, University Medicine Greifswald, Greifswald, Germany.,German Centre for Neurodegenerative Diseases, Site Rostock/Greifswald, Greifswald, Greifswald, Germany
| | - Robin Bülow
- German Centre for Cardiovascular Research (DZHK), Partner Site Greifswald, Greifswald, Germany.,Institute of Diagnostic Radiology and Neuroradiology, University Medicine Greifswald, Greifswald, Germany
| | - Markus Otto
- Institute of Diagnostic Radiology and Neuroradiology, University Medicine Greifswald, Greifswald, Germany
| | - Norbert Hosten
- Institute of Diagnostic Radiology and Neuroradiology, University Medicine Greifswald, Greifswald, Germany
| | - Wolfgang Rathmann
- Institute of Biometrics and Epidemiology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich Heine University, Greifswald, Germany
| | - Ulf Schminke
- Department of Neurology, University Medicine Greifswald, Greifswald, Germany
| | - Rico Großjohann
- Clinic of Ophthalmology, University Medicine Greifswald, Greifswald, Germany
| | - Frank Tost
- Clinic of Ophthalmology, University Medicine Greifswald, Greifswald, Germany
| | - Georg Homuth
- Interfaculty Institute of Genetics and Functional Genomics, University Medicine Greifswald, Greifswald, Germany
| | - Uwe Völker
- German Centre for Cardiovascular Research (DZHK), Partner Site Greifswald, Greifswald, Germany.,Interfaculty Institute of Genetics and Functional Genomics, University Medicine Greifswald, Greifswald, Germany
| | - Stefan Weiss
- German Centre for Cardiovascular Research (DZHK), Partner Site Greifswald, Greifswald, Germany.,Interfaculty Institute of Genetics and Functional Genomics, University Medicine Greifswald, Greifswald, Germany
| | - Silva Holtfreter
- Department of Immunology, University Medicine Greifswald, Greifswald, Germany
| | - Barbara M Bröker
- Department of Immunology, University Medicine Greifswald, Greifswald, Germany
| | - Kathrin Zimmermann
- Friedrich Loeffler Institute for Medical Microbiology, University Medicine Greifswald, Greifswald, Germany
| | - Lars Kaderali
- Institute for Bioinformatics, University Medicine Greifswald, Greifswald, Germany
| | | | | | - Klaus Berger
- Institute of Epidemiology and Social Medicine, University of Munster, Munster, Germany
| | - Stefanie Samietz
- Department of Prosthetic Dentistry, Gerodontology and Biomaterials, University Medicine Greifswald, Greifswald, Germany
| | - Christian Schwahn
- Department of Prosthetic Dentistry, Gerodontology and Biomaterials, University Medicine Greifswald, Greifswald, Germany
| | - Birte Holtfreter
- Department of Restorative Dentistry, Periodontology, Endodontology, and Preventive and Pediatric Dentistry, University Medicine Greifswald, Greifswald, Germany
| | - Reiner Biffar
- Department of Prosthetic Dentistry, Gerodontology and Biomaterials, University Medicine Greifswald, Greifswald, Germany
| | - Stefan Kindler
- Department of Oral and Maxillofacial Surgery/Plastic Surgery, University Medicine Greifswald, Greifswald, Germany
| | - Katharina Wittfeld
- Clinic of Psychiatry and Psychotherapy, University Medicine Greifswald, Greifswald, Germany.,German Centre for Neurodegenerative Diseases, Site Rostock/Greifswald, Greifswald, Greifswald, Germany
| | - Wolfgang Hoffmann
- Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany.,German Centre for Cardiovascular Research (DZHK), Partner Site Greifswald, Greifswald, Germany.,German Centre for Neurodegenerative Diseases, Site Rostock/Greifswald, Greifswald, Greifswald, Germany
| | - Thomas Kocher
- Department of Restorative Dentistry, Periodontology, Endodontology, and Preventive and Pediatric Dentistry, University Medicine Greifswald, Greifswald, Germany
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4
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Ahlers JMD, Falckenhayn C, Holzscheck N, Solé-Boldo L, Schütz S, Wenck H, Winnefeld M, Lyko F, Grönniger E, Siracusa A. Single-Cell RNA Profiling of Human Skin Reveals Age-Related Loss of Dermal Sheath Cells and Their Contribution to a Juvenile Phenotype. Front Genet 2022; 12:797747. [PMID: 35069694 PMCID: PMC8776708 DOI: 10.3389/fgene.2021.797747] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Accepted: 11/16/2021] [Indexed: 12/01/2022] Open
Abstract
The dermal sheath (DS) is a population of mesenchyme-derived skin cells with emerging importance for skin homeostasis. The DS includes hair follicle dermal stem cells, which exhibit self-renewal and serve as bipotent progenitors of dermal papilla (DP) cells and DS cells. Upon aging, stem cells exhibit deficiencies in self-renewal and their number is reduced. While the DS of mice has been examined in considerable detail, our knowledge of the human DS, the pathways contributing to its self-renewal and differentiation capacity and potential paracrine effects important for tissue regeneration and aging is very limited. Using single-cell RNA sequencing of human skin biopsies from donors of different ages we have now analyzed the transcriptome of 72,048 cells, including 50,149 fibroblasts. Our results show that DS cells that exhibit stem cell characteristics were lost upon aging. We further show that HES1, COL11A1, MYL4 and CTNNB1 regulate DS stem cell characteristics. Finally, the DS secreted protein Activin A showed paracrine effects on keratinocytes and dermal fibroblasts, promoting proliferation, epidermal thickness and pro-collagen production. Our work provides a detailed description of human DS identity on the single-cell level, its loss upon aging, its stem cell characteristics and its contribution to a juvenile skin phenotype.
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Affiliation(s)
| | | | | | - Llorenç Solé-Boldo
- Division of Epigenetics, DKFZ-ZMBH Alliance, German Cancer Research Center, Heidelberg, Germany
| | - Sabrina Schütz
- Division of Epigenetics, DKFZ-ZMBH Alliance, German Cancer Research Center, Heidelberg, Germany
| | - Horst Wenck
- Beiersdorf AG, Research and Development, Hamburg, Germany
| | - Marc Winnefeld
- Beiersdorf AG, Research and Development, Hamburg, Germany
| | - Frank Lyko
- Division of Epigenetics, DKFZ-ZMBH Alliance, German Cancer Research Center, Heidelberg, Germany
| | - Elke Grönniger
- Beiersdorf AG, Research and Development, Hamburg, Germany
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5
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Holzscheck N, Falckenhayn C, Söhle J, Kristof B, Siegner R, Werner A, Schössow J, Jürgens C, Völzke H, Wenck H, Winnefeld M, Grönniger E, Kaderali L. Modeling transcriptomic age using knowledge-primed artificial neural networks. NPJ Aging Mech Dis 2021; 7:15. [PMID: 34075044 PMCID: PMC8169742 DOI: 10.1038/s41514-021-00068-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Accepted: 04/26/2021] [Indexed: 02/04/2023] Open
Abstract
The development of 'age clocks', machine learning models predicting age from biological data, has been a major milestone in the search for reliable markers of biological age and has since become an invaluable tool in aging research. However, beyond their unquestionable utility, current clocks offer little insight into the molecular biological processes driving aging, and their inner workings often remain non-transparent. Here we propose a new type of age clock, one that couples predictivity with interpretability of the underlying biology, achieved through the incorporation of prior knowledge into the model design. The clock, an artificial neural network constructed according to well-described biological pathways, allows the prediction of age from gene expression data of skin tissue with high accuracy, while at the same time capturing and revealing aging states of the pathways driving the prediction. The model recapitulates known associations of aging gene knockdowns in simulation experiments and demonstrates its utility in deciphering the main pathways by which accelerated aging conditions such as Hutchinson-Gilford progeria syndrome, as well as pro-longevity interventions like caloric restriction, exert their effects.
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Affiliation(s)
- Nicholas Holzscheck
- grid.432589.10000 0001 2201 4639Front End Innovation, Beiersdorf AG, Hamburg, Germany ,grid.5603.0Institute for Bioinformatics, University Medicine Greifswald, Greifswald, Germany
| | - Cassandra Falckenhayn
- grid.432589.10000 0001 2201 4639Front End Innovation, Beiersdorf AG, Hamburg, Germany
| | - Jörn Söhle
- grid.432589.10000 0001 2201 4639Front End Innovation, Beiersdorf AG, Hamburg, Germany
| | - Boris Kristof
- grid.432589.10000 0001 2201 4639Front End Innovation, Beiersdorf AG, Hamburg, Germany
| | - Ralf Siegner
- grid.432589.10000 0001 2201 4639Front End Innovation, Beiersdorf AG, Hamburg, Germany
| | - André Werner
- grid.5603.0Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Janka Schössow
- grid.5603.0Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Clemens Jürgens
- grid.5603.0Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Henry Völzke
- grid.5603.0Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Horst Wenck
- grid.432589.10000 0001 2201 4639Front End Innovation, Beiersdorf AG, Hamburg, Germany
| | - Marc Winnefeld
- grid.432589.10000 0001 2201 4639Front End Innovation, Beiersdorf AG, Hamburg, Germany
| | - Elke Grönniger
- grid.432589.10000 0001 2201 4639Front End Innovation, Beiersdorf AG, Hamburg, Germany
| | - Lars Kaderali
- grid.5603.0Institute for Bioinformatics, University Medicine Greifswald, Greifswald, Germany
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6
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Hoefner C, Muhr C, Horder H, Wiesner M, Wittmann K, Lukaszyk D, Radeloff K, Winnefeld M, Becker M, Blunk T, Bauer-Kreisel P. Human Adipose-Derived Mesenchymal Stromal/Stem Cell Spheroids Possess High Adipogenic Capacity and Acquire an Adipose Tissue-like Extracellular Matrix Pattern. Tissue Eng Part A 2020; 26:915-926. [PMID: 32070231 DOI: 10.1089/ten.tea.2019.0206] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Adipose-derived mesenchymal stromal/stem cells (ASCs) represent a commonly used cell source for adipose tissue engineering. In this context, ASCs have routinely been cultured in conventional 2D culture and applied as single cell suspension for seeding onto scaffold materials or direct injection. However, this approach is associated with the loss of their intrinsic 3D microenvironment and leads to impaired regenerative capacity of the cells. Thus, the application of ASCs as self-assembled 3D spheroids with cells residing in their own matrix is an attractive alternative. However, characterization of the structural features and differentiation capacity of the spheroids is necessary to effectively apply them as building blocks in adipose tissue engineering. In this study, we focus on extracellular matrix (ECM) development in ASC spheroids, as well as adipogenic differentiation in comparison to conventional 2D culture using different induction protocols. Reproducible assembly of ASCs into spheroids was achieved within 24 h using the liquid overlay technique. Undifferentiated spheroids displayed a stromal ECM pattern, with fibronectin, collagen V, and VI as the main components. In the course of adipogenesis, a dynamic shift in the ECM composition toward an adipogenic phenotype was observed, associated with enhanced expression of laminin, collagen I, IV, V, and VI, similar to native fat. Furthermore, adipogenic differentiation was enhanced in spheroids as compared with 2D cultured cells, with the spheroids needing a distinctly shorter adipogenic stimulus to sustain adipogenesis, which was demonstrated based on analysis of triglyceride content and adipogenic marker gene expression. In summary, culturing ASCs as spheroids can enhance their adipogenic capacity and generate adipose-like microtissues, which may be a promising cell delivery strategy for adipose tissue engineering approaches. Impact statement Adipose-derived mesenchymal stromal/stem cells (ASCs) as a widely used cell source for adipose tissue engineering have been shown to be limited in their regenerative capacity when applied as single cells. As an alternative approach, the delivery as spheroids, consisting of cells in a 3D context, may be favorable. However, insights into extracellular matrix (ECM) development and efficient adipogenic differentiation are required for their effective application. In this study, we show that differentiated ASC spheroids develop an ECM, resembling native adipose tissue. Furthermore, the ASC spheroids exhibited a superior differentiation capacity as compared with conventional 2D culture, and required only a short adipogenic induction stimulus. Our results identify ASC-derived spheroids as an attractive cell delivery method for adipose tissue engineering approaches.
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Affiliation(s)
- Christiane Hoefner
- Department of Trauma, Hand, Plastic and Reconstructive Surgery and University of Würzburg, Würzburg, Germany
| | - Christian Muhr
- Department of Trauma, Hand, Plastic and Reconstructive Surgery and University of Würzburg, Würzburg, Germany
| | - Hannes Horder
- Department of Trauma, Hand, Plastic and Reconstructive Surgery and University of Würzburg, Würzburg, Germany
| | - Miriam Wiesner
- Department of Trauma, Hand, Plastic and Reconstructive Surgery and University of Würzburg, Würzburg, Germany
| | - Katharina Wittmann
- Department of Trauma, Hand, Plastic and Reconstructive Surgery and University of Würzburg, Würzburg, Germany
| | - Daniel Lukaszyk
- Department of Trauma, Hand, Plastic and Reconstructive Surgery and University of Würzburg, Würzburg, Germany
| | - Katrin Radeloff
- Department of Otorhinolaryngology, University of Würzburg, Würzburg, Germany
| | | | - Matthias Becker
- Institute for Medical Radiation and Cell Research, University of Würzburg, Würzburg, Germany
| | - Torsten Blunk
- Department of Trauma, Hand, Plastic and Reconstructive Surgery and University of Würzburg, Würzburg, Germany
| | - Petra Bauer-Kreisel
- Department of Trauma, Hand, Plastic and Reconstructive Surgery and University of Würzburg, Würzburg, Germany
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7
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Fiedler J, Grönniger E, Pfanne A, Brönneke S, Schmidt K, Falk CS, Wenck H, Terstegen L, Thum T, Winnefeld M. Identification of miR-126 as a new regulator of skin ageing. Exp Dermatol 2018; 26:284-286. [PMID: 27574096 DOI: 10.1111/exd.13173] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/26/2016] [Indexed: 01/13/2023]
Affiliation(s)
- Jan Fiedler
- Institute of Molecular and Translational Therapeutic Strategies (IMTTS), IFB-Tx, Hannover Medical School, Hannover, Germany
| | | | - Angelika Pfanne
- Institute of Molecular and Translational Therapeutic Strategies (IMTTS), IFB-Tx, Hannover Medical School, Hannover, Germany
| | | | | | | | - Horst Wenck
- Research Department, Beiersdorf AG, Hamburg, Germany
| | | | - Thomas Thum
- Institute of Molecular and Translational Therapeutic Strategies (IMTTS), IFB-Tx, Hannover Medical School, Hannover, Germany.,National Heart and Lung Institute, Imperial College London, London, UK.,REBIRTH Excellence Cluster, Hannover Medical School, Hannover, Germany
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8
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Paredes MR, Bormann F, Raddatz G, Gutekunst J, Lucena-Porcel C, Köhler F, Wurzer E, Schmidt K, Röwert-Huber J, Denisova E, Feuerbach L, Herpel E, Nindl I, Hofmann TG, Winnefeld M, Lyko F. Abstract 5333: Methylation profiling identifies two subclasses of cutaneous squamous cell carcinoma related to distinct cell types of origin. Cancer Res 2018. [DOI: 10.1158/1538-7445.am2018-5333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Cutaneous squamous cell carcinoma (cSCC) is the second most common skin cancer type and arises from keratinocytes. Most cSCC progress from a UV-induced precancerous lesion termed actinic keratosis (AK). Despite various efforts to characterize these lesions molecularly, the etiology of AK and its progression to cSCC remain only partially understood. Here we have used Infinium MethylationEPIC BeadChips to interrogate the DNA methylation status of about 850.000 CpGs in epidermis samples from healthy skin, AK and cSCC. Importantly, we found that the premalignant AK samples displayed classical features of cancer methylomes and were highly similar to cSCC methylomes. Further analysis identified typical features of stem cell methylomes, such as a reduced DNA methylation age, non-CpG methylation and stem cell-related keratin and enhancer methylation patterns. Interestingly, this signature was detected only in one half of the AK and cSCC samples, while the other half showed keratin and enhancer methylation patterns that were more closely related to the control epidermis. These findings suggest the existence of two distinct subclasses of AK and cSCC that originate from distinct keratinocyte differentiation stages.
Citation Format: Manuel Rodríguez Paredes, Felix Bormann, Günter Raddatz, Julian Gutekunst, Carlota Lucena-Porcel, Florian Köhler, Elisabeth Wurzer, Katrin Schmidt, Joachim Röwert-Huber, Evgeniya Denisova, Lars Feuerbach, Esther Herpel, Ingo Nindl, Thomas G. Hofmann, Marc Winnefeld, Frank Lyko. Methylation profiling identifies two subclasses of cutaneous squamous cell carcinoma related to distinct cell types of origin [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2018; 2018 Apr 14-18; Chicago, IL. Philadelphia (PA): AACR; Cancer Res 2018;78(13 Suppl):Abstract nr 5333.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | - Esther Herpel
- 2Institute of Pathology, Heidelberg University, Heidelberg, Germany
| | - Ingo Nindl
- 4Charité, University Hospital, Berlin, Germany
| | | | | | - Frank Lyko
- 1German Cancer Research Center, Heidelberg, Germany
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9
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Rodríguez-Paredes M, Bormann F, Raddatz G, Gutekunst J, Lucena-Porcel C, Köhler F, Wurzer E, Schmidt K, Gallinat S, Wenck H, Röwert-Huber J, Denisova E, Feuerbach L, Park J, Brors B, Herpel E, Nindl I, Hofmann TG, Winnefeld M, Lyko F. Methylation profiling identifies two subclasses of squamous cell carcinoma related to distinct cells of origin. Nat Commun 2018; 9:577. [PMID: 29422656 PMCID: PMC5805678 DOI: 10.1038/s41467-018-03025-1] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Accepted: 01/15/2018] [Indexed: 12/20/2022] Open
Abstract
Cutaneous squamous cell carcinoma (cSCC) is the second most common skin cancer and usually progresses from a UV-induced precancerous lesion termed actinic keratosis (AK). Despite various efforts to characterize these lesions molecularly, the etiology of AK and its progression to cSCC remain partially understood. Here, we use Infinium MethylationEPIC BeadChips to interrogate the DNA methylation status in healthy, AK and cSCC epidermis samples. Importantly, we show that AK methylation patterns already display classical features of cancer methylomes and are highly similar to cSCC profiles. Further analysis identifies typical features of stem cell methylomes, such as reduced DNA methylation age, non-CpG methylation, and stem cell-related keratin and enhancer methylation patterns. Interestingly, this signature is detected only in half of the samples, while the other half shows patterns more closely related to healthy epidermis. These findings suggest the existence of two subclasses of AK and cSCC emerging from distinct keratinocyte differentiation stages.
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Affiliation(s)
- Manuel Rodríguez-Paredes
- Division of Epigenetics, DKFZ-ZMBH Alliance, German Cancer Research Center, 69120, Heidelberg, Germany
| | - Felix Bormann
- Division of Epigenetics, DKFZ-ZMBH Alliance, German Cancer Research Center, 69120, Heidelberg, Germany
| | - Günter Raddatz
- Division of Epigenetics, DKFZ-ZMBH Alliance, German Cancer Research Center, 69120, Heidelberg, Germany
| | - Julian Gutekunst
- Division of Epigenetics, DKFZ-ZMBH Alliance, German Cancer Research Center, 69120, Heidelberg, Germany
| | - Carlota Lucena-Porcel
- Institute of Pathology, Heidelberg University, 69120, Heidelberg, Germany
- Tissue Bank of the National Center for Tumor Diseases (NCT), 69120, Heidelberg, Germany
| | - Florian Köhler
- Division of Epigenetics, DKFZ-ZMBH Alliance, German Cancer Research Center, 69120, Heidelberg, Germany
| | | | - Katrin Schmidt
- Research & Development, Beiersdorf AG, 20253, Hamburg, Germany
| | - Stefan Gallinat
- Research & Development, Beiersdorf AG, 20253, Hamburg, Germany
| | - Horst Wenck
- Research & Development, Beiersdorf AG, 20253, Hamburg, Germany
| | - Joachim Röwert-Huber
- Department of Dermatology, Venereology and Allergy, Charité, University Hospital, 10117, Berlin, Germany
| | - Evgeniya Denisova
- Division of Applied Bioinformatics, German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany
| | - Lars Feuerbach
- Division of Applied Bioinformatics, German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany
| | - Jeongbin Park
- Division of Theoretical Bioinformatics, German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany
| | - Benedikt Brors
- Division of Applied Bioinformatics, German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany
- National Center for Tumor Diseases (NCT), 69120, Heidelberg, Germany
- German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany
| | - Esther Herpel
- Institute of Pathology, Heidelberg University, 69120, Heidelberg, Germany
- Tissue Bank of the National Center for Tumor Diseases (NCT), 69120, Heidelberg, Germany
| | - Ingo Nindl
- Department of Dermatology, Venereology and Allergy, Charité, University Hospital, 10117, Berlin, Germany
| | - Thomas G Hofmann
- Division of Epigenetics, DKFZ-ZMBH Alliance, German Cancer Research Center, 69120, Heidelberg, Germany
| | - Marc Winnefeld
- Research & Development, Beiersdorf AG, 20253, Hamburg, Germany
| | - Frank Lyko
- Division of Epigenetics, DKFZ-ZMBH Alliance, German Cancer Research Center, 69120, Heidelberg, Germany.
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Madsen JGS, Rauch A, Van Hauwaert EL, Schmidt SF, Winnefeld M, Mandrup S. Integrated analysis of motif activity and gene expression changes of transcription factors. Genome Res 2018; 28:243-255. [PMID: 29233921 PMCID: PMC5793788 DOI: 10.1101/gr.227231.117] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Accepted: 12/01/2017] [Indexed: 01/01/2023]
Abstract
The ability to predict transcription factors based on sequence information in regulatory elements is a key step in systems-level investigation of transcriptional regulation. Here, we have developed a novel tool, IMAGE, for precise prediction of causal transcription factors based on transcriptome profiling and genome-wide maps of enhancer activity. High precision is obtained by combining a near-complete database of position weight matrices (PWMs), generated by compiling public databases and systematic prediction of PWMs for uncharacterized transcription factors, with a state-of-the-art method for PWM scoring and a novel machine learning strategy, based on both enhancers and promoters, to predict the contribution of motifs to transcriptional activity. We applied IMAGE to published data obtained during 3T3-L1 adipocyte differentiation and showed that IMAGE predicts causal transcriptional regulators of this process with higher confidence than existing methods. Furthermore, we generated genome-wide maps of enhancer activity and transcripts during human mesenchymal stem cell commitment and adipocyte differentiation and used IMAGE to identify positive and negative transcriptional regulators of this process. Collectively, our results demonstrate that IMAGE is a powerful and precise method for prediction of regulators of gene expression.
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Affiliation(s)
- Jesper Grud Skat Madsen
- Department of Biochemistry and Molecular Biology, University of Southern Denmark, 5230 Odense, Denmark
| | - Alexander Rauch
- Department of Biochemistry and Molecular Biology, University of Southern Denmark, 5230 Odense, Denmark
| | - Elvira Laila Van Hauwaert
- Department of Biochemistry and Molecular Biology, University of Southern Denmark, 5230 Odense, Denmark
| | - Søren Fisker Schmidt
- Department of Biochemistry and Molecular Biology, University of Southern Denmark, 5230 Odense, Denmark
| | - Marc Winnefeld
- Research and Development, Beiersdorf AG, 20245 Hamburg, Germany
| | - Susanne Mandrup
- Department of Biochemistry and Molecular Biology, University of Southern Denmark, 5230 Odense, Denmark
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Kessler L, Gehrke S, Winnefeld M, Huber B, Hoch E, Walter T, Wyrwa R, Schnabelrauch M, Schmidt M, Kückelhaus M, Lehnhardt M, Hirsch T, Jacobsen F. Methacrylated gelatin/hyaluronan-based hydrogels for soft tissue engineering. J Tissue Eng 2017; 8:2041731417744157. [PMID: 29318000 PMCID: PMC5753891 DOI: 10.1177/2041731417744157] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Accepted: 10/25/2017] [Indexed: 12/15/2022] Open
Abstract
In vitro–generated soft tissue could provide alternate therapies for soft tissue defects. The aim of this study was to evaluate methacrylated gelatin/hyaluronan as scaffolds for soft tissue engineering and their interaction with human adipose–derived stem cells (hASCs). ASCs were incorporated into methacrylated gelatin/hyaluronan hydrogels. The gels were photocrosslinked with a lithium phenyl-2,4,6-trimethylbenzoylphosphinate photoinitiator and analyzed for cell viability and adipogenic differentiation of ASCs over a period of 30 days. Additionally, an angiogenesis assay was performed to assess their angiogenic potential. After 24 h, ASCs showed increased viability on composite hydrogels. These results were consistent over 21 days of culture. By induction of adipogenic differentiation, the mature adipocytes were observed after 7 days of culture, their number significantly increased until day 28 as well as expression of fatty acid binding protein 4 and adiponectin. Our scaffolds are promising as building blocks for adipose tissue engineering and allowed long viability, proliferation, and differentiation of ASCs.
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Affiliation(s)
- Lukas Kessler
- Department of Plastic Surgery and Burn Centre, BG University Hospital Bergmannsheil GmbH, Ruhr University Bochum, Bochum, Germany
| | - Sandra Gehrke
- Research and Development, Beiersdorf AG, Hamburg, Germany
| | - Marc Winnefeld
- Research and Development, Beiersdorf AG, Hamburg, Germany
| | - Birgit Huber
- Institute for Interfacial Engineering and Plasma Technology, University of Stuttgart, Stuttgart, Germany
| | - Eva Hoch
- Institute for Interfacial Engineering and Plasma Technology, University of Stuttgart, Stuttgart, Germany
| | | | - Ralf Wyrwa
- Biomaterials Department, INNOVENT e. V., Jena, Germany
| | | | - Malte Schmidt
- Department of Plastic Surgery and Burn Centre, BG University Hospital Bergmannsheil GmbH, Ruhr University Bochum, Bochum, Germany
| | - Maximilian Kückelhaus
- Department of Plastic Surgery and Burn Centre, BG University Hospital Bergmannsheil GmbH, Ruhr University Bochum, Bochum, Germany
| | - Marcus Lehnhardt
- Department of Plastic Surgery and Burn Centre, BG University Hospital Bergmannsheil GmbH, Ruhr University Bochum, Bochum, Germany
| | - Tobias Hirsch
- Department of Plastic Surgery and Burn Centre, BG University Hospital Bergmannsheil GmbH, Ruhr University Bochum, Bochum, Germany
| | - Frank Jacobsen
- Department of Plastic Surgery and Burn Centre, BG University Hospital Bergmannsheil GmbH, Ruhr University Bochum, Bochum, Germany
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Kuehne A, Hildebrand J, Soehle J, Wenck H, Terstegen L, Gallinat S, Knott A, Winnefeld M, Zamboni N. An integrative metabolomics and transcriptomics study to identify metabolic alterations in aged skin of humans in vivo. BMC Genomics 2017; 18:169. [PMID: 28201987 PMCID: PMC5312537 DOI: 10.1186/s12864-017-3547-3] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Accepted: 02/02/2017] [Indexed: 11/12/2022] Open
Abstract
Background Aging human skin undergoes significant morphological and functional changes such as wrinkle formation, reduced wound healing capacity, and altered epidermal barrier function. Besides known age-related alterations like DNA-methylation changes, metabolic adaptations have been recently linked to impaired skin function in elder humans. Understanding of these metabolic adaptations in aged skin is of special interest to devise topical treatments that potentially reverse or alleviate age-dependent skin deterioration and the occurrence of skin disorders. Results We investigated the global metabolic adaptions in human skin during aging with a combined transcriptomic and metabolomic approach applied to epidermal tissue samples of young and old human volunteers. Our analysis confirmed known age-dependent metabolic alterations, e.g. reduction of coenzyme Q10 levels, and also revealed novel age effects that are seemingly important for skin maintenance. Integration of donor-matched transcriptome and metabolome data highlighted transcriptionally-driven alterations of metabolism during aging such as altered activity in upper glycolysis and glycerolipid biosynthesis or decreased protein and polyamine biosynthesis. Together, we identified several age-dependent metabolic alterations that might affect cellular signaling, epidermal barrier function, and skin structure and morphology. Conclusions Our study provides a global resource on the metabolic adaptations and its transcriptional regulation during aging of human skin. Thus, it represents a first step towards an understanding of the impact of metabolism on impaired skin function in aged humans and therefore will potentially lead to improved treatments of age related skin disorders. Electronic supplementary material The online version of this article (doi:10.1186/s12864-017-3547-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Andreas Kuehne
- Institute of Molecular Systems Biology, ETH Zurich, Auguste-Piccard-Hof 1, 8093, Zürich, Switzerland.,PhD Program Systems Biology, Life Science Zurich Graduate School, Zurich, Switzerland
| | - Janosch Hildebrand
- Coburg University of Applied Sciences and Arts, Friedrich-Streib-Straße 2, Coburg, 96450, Germany
| | - Joern Soehle
- Beiersdorf AG, R&D, Skin Research Center, Unnastrasse 48, Hamburg, 20253, Germany
| | - Horst Wenck
- Beiersdorf AG, R&D, Skin Research Center, Unnastrasse 48, Hamburg, 20253, Germany
| | - Lara Terstegen
- Beiersdorf AG, R&D, Skin Research Center, Unnastrasse 48, Hamburg, 20253, Germany
| | - Stefan Gallinat
- Beiersdorf AG, R&D, Skin Research Center, Unnastrasse 48, Hamburg, 20253, Germany
| | - Anja Knott
- Beiersdorf AG, R&D, Skin Research Center, Unnastrasse 48, Hamburg, 20253, Germany
| | - Marc Winnefeld
- Beiersdorf AG, R&D, Skin Research Center, Unnastrasse 48, Hamburg, 20253, Germany.
| | - Nicola Zamboni
- Institute of Molecular Systems Biology, ETH Zurich, Auguste-Piccard-Hof 1, 8093, Zürich, Switzerland.
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13
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Huber B, Link A, Linke K, Gehrke SA, Winnefeld M, Kluger PJ. Integration of Mature Adipocytes to Build-Up a Functional Three-Layered Full-Skin Equivalent. Tissue Eng Part C Methods 2016; 22:756-64. [PMID: 27334067 PMCID: PMC4991605 DOI: 10.1089/ten.tec.2016.0141] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Large, deep full-thickness skin wounds from high-graded burns or trauma are not able to reepithelialize sufficiently, resulting in scar formation, mobility limitations, and cosmetic deformities. In this study, in vitro-constructed tissue replacements are needed. Furthermore, such full-skin equivalents would be helpful as in vivo-like test systems for toxicity, cosmetic, and pharmaceutical testing. Up to date, no skin equivalent is available containing the underlying subcutaneous fatty tissue. In this study, we composed a full-skin equivalent and evaluated three different media for the coculture of mature adipocytes, fibroblasts, and keratinocytes. Therefore, adipocyte medium was supplemented with ascorbyl-2-phosphate and calcium chloride, which are important for successful epidermal stratification (Air medium). This medium was further supplemented with two commercially available factor combinations often used for the in vitro culture of keratinocytes (Air-HKGS and Air-KGM medium). We showed that in all media, keratinocytes differentiated successfully to build a stratified epidermal layer and expressed cytokeratin 10 and 14. Perilipin A-positive adipocytes could be found in all tissue models for up to 14 days, whereas adipocytes in the Air-HKGS and Air-KGM medium seemed to be smaller. Adipocytes in all tissue models were able to release adipocyte-specific factors, whereas the supplementation of keratinocyte-specific factors had a slightly negative effect on adipocyte functionality. The permeability of the epidermis of all models was comparable since they were able to withstand a deep penetration of cytotoxic Triton X in the same manner. Taken together, we were able to compose functional three-layered full-skin equivalents by using the Air medium.
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Affiliation(s)
- Birgit Huber
- 1 Institute of Interfacial Process Engineering and Plasma Technology, University of Stuttgart , Stuttgart, Germany
| | - Antonia Link
- 2 Reutlingen University , School of Applied Chemistry, Reutlingen, Germany .,3 Fraunhofer Institut for Interfacial Engineering and Biotechnology IGB, Department Cell and Tissue Engineering, Stuttgart, Germany
| | - Kirstin Linke
- 3 Fraunhofer Institut for Interfacial Engineering and Biotechnology IGB, Department Cell and Tissue Engineering, Stuttgart, Germany
| | - Sandra A Gehrke
- 4 Beiersdorf AG, Research and Development , Hamburg, Germany
| | - Marc Winnefeld
- 4 Beiersdorf AG, Research and Development , Hamburg, Germany
| | - Petra J Kluger
- 2 Reutlingen University , School of Applied Chemistry, Reutlingen, Germany .,3 Fraunhofer Institut for Interfacial Engineering and Biotechnology IGB, Department Cell and Tissue Engineering, Stuttgart, Germany
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14
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Bormann F, Rodríguez‐Paredes M, Hagemann S, Manchanda H, Kristof B, Gutekunst J, Raddatz G, Haas R, Terstegen L, Wenck H, Kaderali L, Winnefeld M, Lyko F. Reduced DNA methylation patterning and transcriptional connectivity define human skin aging. Aging Cell 2016; 15:563-71. [PMID: 27004597 PMCID: PMC4854925 DOI: 10.1111/acel.12470] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/21/2016] [Indexed: 11/28/2022] Open
Abstract
Epigenetic changes represent an attractive mechanism for understanding the phenotypic changes associated with human aging. Age‐related changes in DNA methylation at the genome scale have been termed ‘epigenetic drift’, but the defining features of this phenomenon remain to be established. Human epidermis represents an excellent model for understanding age‐related epigenetic changes because of its substantial cell‐type homogeneity and its well‐known age‐related phenotype. We have now generated and analyzed the currently largest set of human epidermis methylomes (N = 108) using array‐based profiling of 450 000 methylation marks in various age groups. Data analysis confirmed that age‐related methylation differences are locally restricted and characterized by relatively small effect sizes. Nevertheless, methylation data could be used to predict the chronological age of sample donors with high accuracy. We also identified discontinuous methylation changes as a novel feature of the aging methylome. Finally, our analysis uncovered an age‐related erosion of DNA methylation patterns that is characterized by a reduced dynamic range and increased heterogeneity of global methylation patterns. These changes in methylation variability were accompanied by a reduced connectivity of transcriptional networks. Our findings thus define the loss of epigenetic regulatory fidelity as a key feature of the aging epigenome.
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Affiliation(s)
- Felix Bormann
- Division of Epigenetics DKFZ‐ZMBH Alliance German Cancer Research Center Heidelberg Germany
| | - Manuel Rodríguez‐Paredes
- Division of Epigenetics DKFZ‐ZMBH Alliance German Cancer Research Center Heidelberg Germany
- University Tumor Center Düsseldorf University of Düsseldorf Düsseldorf Germany
| | | | - Himanshu Manchanda
- Institute for Bioinformatics University Medicine Greifswald Greifswald Germany
| | - Boris Kristof
- Research and Development Beiersdorf AG Hamburg Germany
| | - Julian Gutekunst
- Division of Epigenetics DKFZ‐ZMBH Alliance German Cancer Research Center Heidelberg Germany
| | - Günter Raddatz
- Division of Epigenetics DKFZ‐ZMBH Alliance German Cancer Research Center Heidelberg Germany
| | - Rainer Haas
- University Tumor Center Düsseldorf University of Düsseldorf Düsseldorf Germany
| | | | - Horst Wenck
- Research and Development Beiersdorf AG Hamburg Germany
| | - Lars Kaderali
- Institute for Bioinformatics University Medicine Greifswald Greifswald Germany
| | | | - Frank Lyko
- Division of Epigenetics DKFZ‐ZMBH Alliance German Cancer Research Center Heidelberg Germany
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15
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Knott A, Achterberg V, Smuda C, Mielke H, Sperling G, Dunckelmann K, Vogelsang A, Krüger A, Schwengler H, Behtash M, Kristof S, Diekmann H, Eisenberg T, Berroth A, Hildebrand J, Siegner R, Winnefeld M, Teuber F, Fey S, Möbius J, Retzer D, Burkhardt T, Lüttke J, Blatt T. Topical treatment with coenzyme Q10-containing formulas improves skin's Q10 level and provides antioxidative effects. Biofactors 2015; 41:383-90. [PMID: 26648450 PMCID: PMC4737275 DOI: 10.1002/biof.1239] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Revised: 09/08/2015] [Accepted: 09/19/2015] [Indexed: 01/03/2023]
Abstract
Ubiquinone (coenzyme Q10, Q10) represents an endogenously synthesized lipid-soluble antioxidant which is crucial for cellular energy production but is diminished with age and under the influence of external stress factors in human skin. Here, it is shown that topical Q10 treatment is beneficial with regard to effective Q10 replenishment, augmentation of cellular energy metabolism, and antioxidant effects. Application of Q10-containing formulas significantly increased the levels of this quinone on the skin surface. In the deeper layers of the epidermis the ubiquinone level was significantly augmented indicating effective supplementation. Concurrent elevation of ubiquinol levels suggested metabolic transformation of ubiquinone resulting from increased energy metabolism. Incubation of cultured human keratinocytes with Q10 concentrations equivalent to treated skin showed a significant augmentation of energy metabolism. Moreover, the results demonstrated that stressed skin benefits from the topical Q10 treatment by reduction of free radicals and an increase in antioxidant capacity.
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Affiliation(s)
- Anja Knott
- Beiersdorf AGResearch & DevelopmentHamburgGermany
| | | | | | - Heiko Mielke
- Beiersdorf AGResearch & DevelopmentHamburgGermany
| | | | | | | | | | | | | | | | | | | | | | | | - Ralf Siegner
- Beiersdorf AGResearch & DevelopmentHamburgGermany
| | | | - Frank Teuber
- Beiersdorf AGResearch & DevelopmentHamburgGermany
| | - Sven Fey
- Beiersdorf AGResearch & DevelopmentHamburgGermany
| | - Janne Möbius
- Beiersdorf AGResearch & DevelopmentHamburgGermany
| | - Dana Retzer
- Beiersdorf AGResearch & DevelopmentHamburgGermany
| | | | | | - Thomas Blatt
- Beiersdorf AGResearch & DevelopmentHamburgGermany
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16
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Kuehne A, Emmert H, Soehle J, Winnefeld M, Fischer F, Wenck H, Gallinat S, Terstegen L, Lucius R, Hildebrand J, Zamboni N. Acute Activation of Oxidative Pentose Phosphate Pathway as First-Line Response to Oxidative Stress in Human Skin Cells. Mol Cell 2015; 59:359-71. [PMID: 26190262 DOI: 10.1016/j.molcel.2015.06.017] [Citation(s) in RCA: 252] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2014] [Revised: 05/12/2015] [Accepted: 06/10/2015] [Indexed: 12/18/2022]
Abstract
Integrity of human skin is endangered by exposure to UV irradiation and chemical stressors, which can provoke a toxic production of reactive oxygen species (ROS) and oxidative damage. Since oxidation of proteins and metabolites occurs virtually instantaneously, immediate cellular countermeasures are pivotal to mitigate the negative implications of acute oxidative stress. We investigated the short-term metabolic response in human skin fibroblasts and keratinocytes to H2O2 and UV exposure. In time-resolved metabolomics experiments, we observed that within seconds after stress induction, glucose catabolism is routed to the oxidative pentose phosphate pathway (PPP) and nucleotide synthesis independent of previously postulated blocks in glycolysis (i.e., of GAPDH or PKM2). Through ultra-short (13)C labeling experiments, we provide evidence for multiple cycling of carbon backbones in the oxidative PPP, potentially maximizing NADPH reduction. The identified metabolic rerouting in oxidative and non-oxidative PPP has important physiological roles in stabilization of the redox balance and ROS clearance.
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Affiliation(s)
- Andreas Kuehne
- Institute of Molecular Systems Biology, ETH Zurich, Auguste-Piccard-Hof 1, 8093 Zurich, Switzerland; PhD Program Systems Biology, Life Science Zurich Graduate School, 8093 Zurich, Switzerland
| | - Hila Emmert
- Beiersdorf AG, R&D, Skin Research Center, Unnastrasse 48, Hamburg, 20253 Germany
| | - Joern Soehle
- Beiersdorf AG, R&D, Skin Research Center, Unnastrasse 48, Hamburg, 20253 Germany
| | - Marc Winnefeld
- Beiersdorf AG, R&D, Skin Research Center, Unnastrasse 48, Hamburg, 20253 Germany
| | - Frank Fischer
- Beiersdorf AG, R&D, Skin Research Center, Unnastrasse 48, Hamburg, 20253 Germany
| | - Horst Wenck
- Beiersdorf AG, R&D, Skin Research Center, Unnastrasse 48, Hamburg, 20253 Germany
| | - Stefan Gallinat
- Beiersdorf AG, R&D, Skin Research Center, Unnastrasse 48, Hamburg, 20253 Germany
| | - Lara Terstegen
- Beiersdorf AG, R&D, Skin Research Center, Unnastrasse 48, Hamburg, 20253 Germany
| | - Ralph Lucius
- Christian Albrecht University Kiel, Department of Anatomy, Otto-Hahn-Platz 8, 24118 Kiel, Germany
| | - Janosch Hildebrand
- Beiersdorf AG, R&D, Skin Research Center, Unnastrasse 48, Hamburg, 20253 Germany.
| | - Nicola Zamboni
- Institute of Molecular Systems Biology, ETH Zurich, Auguste-Piccard-Hof 1, 8093 Zurich, Switzerland.
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17
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Iwen KA, Priewe AC, Winnefeld M, Rose C, Siemers F, Rohwedel J, Cakiroglu F, Lehnert H, Schepky A, Klein J, Kramer J. Gluteal and abdominal subcutaneous adipose tissue depots as stroma cell source: gluteal cells display increased adipogenic and osteogenic differentiation potentials. Exp Dermatol 2015; 23:395-400. [PMID: 24689514 DOI: 10.1111/exd.12406] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/30/2014] [Indexed: 02/06/2023]
Abstract
Human adipose-derived stroma cells (ADSCs) have successfully been employed in explorative therapeutic studies. Current evidence suggests that ADSCs are unevenly distributed in subcutaneous adipose tissue; therefore, the anatomical origin of ADSCs may influence clinical outcomes. This study was designed to investigate proliferation and differentiation capacities of ADSCs from the gluteal and abdominal depot of 8 females. All had normal BMI (22.01 ± 0.39 kg/m(2) ) and waist circumference (81.13 ± 2.33 cm). Examination by physicians and analysis of 31 laboratory parameters did not reveal possibly confounding medical disorders. Gluteal and abdominal adipose tissue was sampled by en bloc resection on day 7 (±1) after the last menses. Histological examination did not reveal significant depot-specific differences. As assessed by BrdU assay, proliferation of cells from both depots was similar after 24 h and analysis of 15 cell surface markers by flow cytometry identified the isolated cells as ADSCs, again without depot-specific differences. ADSCs from both depots differentiated poorly to chondroblasts. Gluteal ADSCs displayed significantly higher adipogenic differentiation potential than abdominal cells. Osteogenic differentiation was most pronounced in gluteal cells, whereas differentiation of abdominal ADSCs was severely impaired. Our data demonstrate a depot-specific difference in ADSC differentiation potential with abdominal cells failing to meet the criteria of multipotent ADSCs. This finding should be taken into account in future explorations of ADSC-derived therapeutic strategies.
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Gehrke S, Brueckner B, Schepky A, Klein J, Iwen A, Bosch TCG, Wenck H, Winnefeld M, Hagemann S. Epigenetic regulation of depot-specific gene expression in adipose tissue. PLoS One 2013; 8:e82516. [PMID: 24340035 PMCID: PMC3855576 DOI: 10.1371/journal.pone.0082516] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2013] [Accepted: 11/01/2013] [Indexed: 01/26/2023] Open
Abstract
In humans, adipose tissue is distributed in subcutaneous abdominal and subcutaneous gluteal depots that comprise a variety of functional differences. Whereas energy storage in gluteal adipose tissue has been shown to mediate a protective effect, an increase of abdominal adipose tissue is associated with metabolic disorders. However, the molecular basis of depot-specific characteristics is not completely understood yet. Using array-based analyses of transcription profiles, we identified a specific set of genes that was differentially expressed between subcutaneous abdominal and gluteal adipose tissue. To investigate the role of epigenetic regulation in depot-specific gene expression, we additionally analyzed genome-wide DNA methylation patterns in abdominal and gluteal depots. By combining both data sets, we identified a highly significant set of depot-specifically expressed genes that appear to be epigenetically regulated. Interestingly, the majority of these genes form part of the homeobox gene family. Moreover, genes involved in fatty acid metabolism were also differentially expressed. Therefore we suppose that changes in gene expression profiles might account for depot-specific differences in lipid composition. Indeed, triglycerides and fatty acids of abdominal adipose tissue were more saturated compared to triglycerides and fatty acids in gluteal adipose tissue. Taken together, our results uncover clear differences between abdominal and gluteal adipose tissue on the gene expression and DNA methylation level as well as in fatty acid composition. Therefore, a detailed molecular characterization of adipose tissue depots will be essential to develop new treatment strategies for metabolic syndrome associated complications.
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Affiliation(s)
- Sandra Gehrke
- Beiersdorf AG, Research and Development, Hamburg, Germany
| | | | | | - Johannes Klein
- University Medical Center Schleswig-Holstein, Department of Medicine I, Luebeck, Germany
| | - Alexander Iwen
- University Medical Center Schleswig-Holstein, Department of Medicine I, Luebeck, Germany
| | | | - Horst Wenck
- Beiersdorf AG, Research and Development, Hamburg, Germany
| | - Marc Winnefeld
- Beiersdorf AG, Research and Development, Hamburg, Germany
| | - Sabine Hagemann
- Beiersdorf AG, Research and Development, Hamburg, Germany
- * E-mail:
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Raddatz G, Hagemann S, Aran D, Söhle J, Kulkarni PP, Kaderali L, Hellman A, Winnefeld M, Lyko F. Aging is associated with highly defined epigenetic changes in the human epidermis. Epigenetics Chromatin 2013; 6:36. [PMID: 24279375 PMCID: PMC3819645 DOI: 10.1186/1756-8935-6-36] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2013] [Accepted: 10/08/2013] [Indexed: 12/22/2022] Open
Abstract
Background Altered DNA methylation patterns represent an attractive mechanism for understanding the phenotypic changes associated with human aging. Several studies have described global and complex age-related methylation changes, but their structural and functional significance has remained largely unclear. Results We have used transcriptome sequencing to characterize age-related gene expression changes in the human epidermis. The results revealed a significant set of 75 differentially expressed genes with a strong functional relationship to skin homeostasis. We then used whole-genome bisulfite sequencing to identify age-related methylation changes at single-base resolution. Data analysis revealed no global aberrations, but rather highly localized methylation changes, particularly in promoter and enhancer regions that were associated with altered transcriptional activity. Conclusions Our results suggest that the core developmental program of human skin is stably maintained through the aging process and that aging is associated with a limited destabilization of the epigenome at gene regulatory elements.
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Hagemann S, Brönneke S, Winnefeld M. Implications of epigenetic mechanisms for vascular development and disease. Epigenomics 2013; 4:475-7. [PMID: 23130827 DOI: 10.2217/epi.12.43] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
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Ahnert J, Löffler S, Winnefeld M, Vogel H. [Acceptance and practicability of evidence-based therapy standards in child and adolescent rehabilitation: results of a user survey]. REHABILITATION 2012; 52:103-10. [PMID: 23233335 DOI: 10.1055/s-0032-1323649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The introduction of evidence-based therapy standards in child and adolescent rehabilitation of the German statutory pension insurance scheme (Deutsche Rentenversicherung Bund, 2011) was accompanied by a user survey that gave the participating rehabilitation centres the opportunity to comment on the new therapy standards and to suggest modifications.The survey questionnaire encompassed various topics related to the therapy standards, amongst them quality, comprehensibility, and acceptance, evaluation of feedback, and reasons for noncompliance with therapy standard requirements. For each of the 3 indications, a separate questionnaire was applied to assess modification suggestions regarding KTL therapy elements, the minimum percentage of patients to be treated accordingly, and the minimum duration of therapeutic procedures for each evidence-based treatment module. Responses from 14 rehab centres (return rate 54%) were obtained and analyzed.According to the majority of the responding rehabilitation centres, the therapy standards for child and adolescent rehabilitation fulfilled the quality features of topicality, multidisciplinarity, and relevance for routine rehabilitative practice. The degree of empirical grounding was evaluated more inconsistently. Difficulties with coding of KTL therapy elements were cited as the primary reasons for failing to comply with requirements in 2008.Exemplarily, the results of the user survey regarding the rehabilitative treatment of children and adolescents with obesity (age group: 8 years and older) are presented in detail.Concluding, the modifications to the therapy standards in child and adolescent rehabilitation introduced on the basis of the user survey are set out.
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Affiliation(s)
- J Ahnert
- Arbeitsbereich Rehabilitationswissenschaften, Universität Würzburg, 97070 Würzburg.
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Abstract
Whole-genome methylation analysis of newborns and centenarians reveals widespread epigenetic alterations, and provides new insight into age-related methylation pattern changes.
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Winnefeld M, Lyko F. The aging epigenome: DNA methylation from the cradle to the grave. Genome Biol 2012; 13. [PMID: 22839706 PMCID: PMC3491376 DOI: 10.1186/gb-2012-13-7-165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Whole-genome methylation analysis of newborns and centenarians reveals widespread epigenetic alterations, and provides new insight into age-related methylation pattern changes.
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Affiliation(s)
- Marc Winnefeld
- Research and Development, Beiersdorf AG, Hamburg, Germany
| | - Frank Lyko
- Division of Epigenetics, DKFZ-ZMBH Alliance, German Cancer Research Center, Im Neuenheimer Feld 580, 69120 Heidelberg, Germany
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Winnefeld M, Brueckner B, Grönniger E, Stäb F, Wenck H, Lyko F. Stable ethnic variations in DNA methylation patterns of human skin. J Invest Dermatol 2011; 132:466-8. [PMID: 21993563 DOI: 10.1038/jid.2011.323] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Siegner R, Heuser S, Holtzmann U, Söhle J, Schepky A, Raschke T, Stäb F, Wenck H, Winnefeld M. Lotus leaf extract and L-carnitine influence different processes during the adipocyte life cycle. Nutr Metab (Lond) 2010; 7:66. [PMID: 20687953 PMCID: PMC2922297 DOI: 10.1186/1743-7075-7-66] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2010] [Accepted: 08/05/2010] [Indexed: 11/13/2022] Open
Abstract
Background The cellular and molecular mechanisms of adipose tissue biology have been studied extensively over the last two decades. Adipose tissue growth involves both an increase in fat cell size and the formation of mature adipocytes from precursor cells. To investigate how natural substances influence these two processes, we examined the effects of lotus leaf extract (Nelumbo nucifera-extract solution obtained from Silab, France) and L-carnitine on human preadipocytes and adipocytes. Methods For our in vitro studies, we used a lotus leaf extract solution alone or in combination with L-carnitine. Utilizing cultured human preadipocytes, we investigated lotus leaf extract solution-induced inhibition of triglyceride incorporation during adipogenesis and possible effects on cell viability. Studies on human adipocytes were performed aiming to elucidate the efficacy of lotus leaf extract solution to stimulate lipolytic activity. To further characterize lotus leaf extract solution-mediated effects, we determined the expression of the transcription factor adipocyte determination and differentiation factor 1 (ADD1/SREBP-1c) on the RNA- and protein level utilizing qRT-PCR and immunofluorescence analysis. Additionally, the effect of L-carnitine on beta-oxidation was analyzed using human preadipocytes and mature adipocytes. Finally, we investigated additive effects of a combination of lotus leaf extract solution and L-carnitine on triglyceride accumulation during preadipocyte/adipocyte differentiation. Results Our data showed that incubation of preadipocytes with lotus leaf extract solution significantly decreased triglyceride accumulation during adipogenesis without affecting cell viability. Compared to controls, adipocytes incubated with lotus leaf extract solution exhibited a significant increase in lipolysis-activity. Moreover, cell populations cultivated in the presence of lotus leaf extract solution showed a decrease in adipocyte differentiation capacity as indicated by a decrease in the ADD1/SREBP-1c signal. Importantly, our results demonstrated that a combination of lotus leaf extract solution and L-carnitine reduced triglyceride accumulation to a greater extent compared to incubation with either substance alone. Conclusions Overall, our data demonstrate that a combination of lotus leaf extract and L-carnitine reduced triglyceride accumulation in human (pre)adipocytes by affecting different processes during the adipocyte life cycle. For this reason, this combination might represent a treatment option for obesity-related diseases.
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Affiliation(s)
- Ralf Siegner
- Research & Development, Research Special Skincare, Beiersdorf AG, Unnastrasse 48, Bf, 520, 20245 Hamburg, Germany.
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Grönniger E, Weber B, Heil O, Peters N, Stäb F, Wenck H, Korn B, Winnefeld M, Lyko F. Aging and chronic sun exposure cause distinct epigenetic changes in human skin. PLoS Genet 2010; 6:e1000971. [PMID: 20523906 PMCID: PMC2877750 DOI: 10.1371/journal.pgen.1000971] [Citation(s) in RCA: 166] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2009] [Accepted: 04/26/2010] [Indexed: 12/18/2022] Open
Abstract
Epigenetic changes are widely considered to play an important role in aging, but experimental evidence to support this hypothesis has been scarce. We have used array-based analysis to determine genome-scale DNA methylation patterns from human skin samples and to investigate the effects of aging, chronic sun exposure, and tissue variation. Our results reveal a high degree of tissue specificity in the methylation patterns and also showed very little interindividual variation within tissues. Data stratification by age revealed that DNA from older individuals was characterized by a specific hypermethylation pattern affecting less than 1% of the markers analyzed. Interestingly, stratification by sun exposure produced a fundamentally different pattern with a significant trend towards hypomethylation. Our results thus identify defined age-related DNA methylation changes and suggest that these alterations might contribute to the phenotypic changes associated with skin aging. Although a role of epigenetic mechanisms in aging and in the adaptation to environmental exposures has been widely assumed, research in this area has been hampered by major methodological challenges. We have now used a novel platform for genome-scale methylation analysis to determine the methylation patterns of human skin samples. Skin represents a particularly suitable model for this study because of its well-known phenotype changes associated with aging and sun exposure, and because skin samples are characterized by a very high degree of cellular homogeneity. By examining 50 samples, and analyzing 50 million data points, we show that aging and sun exposure are associated with comparably small, but significant changes in the DNA methylation patterns of human epidermis and dermis samples. Interestingly, aging was not associated with a general variation in DNA methylation patterns, but rather with a directed DNA hypermethylation shift. Importantly, our results also suggest that epigenetic mechanisms may be functionally important for the phenotypic changes associated with aging and chronic sun exposure.
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Affiliation(s)
- Elke Grönniger
- Research and Development, Beiersdorf AG, Hamburg, Germany
| | - Barbara Weber
- Division of Epigenetics, DKFZ-ZMBH Alliance, German Cancer Research Center, Heidelberg, Germany
| | - Oliver Heil
- Genomics and Proteomics Core Facility, German Cancer Research Center, Heidelberg, Germany
| | - Nils Peters
- Research and Development, Beiersdorf AG, Hamburg, Germany
| | - Franz Stäb
- Research and Development, Beiersdorf AG, Hamburg, Germany
| | - Horst Wenck
- Research and Development, Beiersdorf AG, Hamburg, Germany
| | - Bernhard Korn
- Genomics and Proteomics Core Facility, German Cancer Research Center, Heidelberg, Germany
| | - Marc Winnefeld
- Research and Development, Beiersdorf AG, Hamburg, Germany
| | - Frank Lyko
- Division of Epigenetics, DKFZ-ZMBH Alliance, German Cancer Research Center, Heidelberg, Germany
- * E-mail:
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Söhle J, Knott A, Holtzmann U, Siegner R, Grönniger E, Schepky A, Gallinat S, Wenck H, Stäb F, Winnefeld M. White Tea extract induces lipolytic activity and inhibits adipogenesis in human subcutaneous (pre)-adipocytes. Nutr Metab (Lond) 2009; 6:20. [PMID: 19409077 PMCID: PMC2685800 DOI: 10.1186/1743-7075-6-20] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2008] [Accepted: 05/01/2009] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND The dramatic increase in obesity-related diseases emphasizes the need to elucidate the cellular and molecular mechanisms underlying fat metabolism. To investigate how natural substances influence lipolysis and adipogenesis, we determined the effects of White Tea extract on cultured human subcutaneous preadipocytes and adipocytes. METHODS For our in vitro studies we used a White Tea extract solution that contained polyphenols and methylxanthines. Utilizing cultured human preadipocytes we investigated White Tea extract solution-induced inhibition of triglyceride incorporation during adipogenesis and possible effects on cell viability. In vitro studies on human adipocytes were performed aiming to elucidate the efficacy of White Tea extract solution to stimulate lipolytic activity. To characterize White Tea extract solution-mediated effects on a molecular level, we analyzed gene expression of essential adipogenesis-related transcription factors by qRT-PCR and determined the expression of the transcription factor ADD1/SREBP-1c on the protein level utilizing immunofluorescence analysis. RESULTS Our data show that incubation of preadipocytes with White Tea extract solution significantly decreased triglyceride incorporation during adipogenesis in a dose-dependent manner (n = 10) without affecting cell viability (n = 10). These effects were, at least in part, mediated by EGCG (n = 10, 50 μM). In addition, White Tea extract solution also stimulated lipolytic activity in adipocytes (n = 7). Differentiating preadipocytes cultivated in the presence of 0.5% White Tea extract solution showed a decrease in PPARγ, ADD1/SREBP-1c, C/EBPα and C/EBPδ mRNA levels. Moreover, the expression of the transcription factor ADD1/SREBP-1c was not only decreased on the mRNA but also on the protein level. CONCLUSION White Tea extract is a natural source that effectively inhibits adipogenesis and stimulates lipolysis-activity. Therefore, it can be utilized to modulate different levels of the adipocyte life cycle.
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Affiliation(s)
- Jörn Söhle
- Research & Development, Research Special Skincare, Beiersdorf AG, Unnastrasse 48, 20245 Hamburg, Germany.
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Winnefeld M, Brüggemann S. [Practice guideline for breast cancer rehabilitation from the perspective of the rehabilitation centres: findings of a user survey on acceptance and practicability of the pilot version]. REHABILITATION 2008; 47:334-42. [PMID: 19085794 DOI: 10.1055/s-0028-1102949] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
BACKGROUND The pilot phase of the rehabilitation guideline for patients with breast cancer of the German Pension Fund was accompanied by a user survey. This survey allowed oncological rehabilitation centres to comment on the guideline and to suggest changes. METHODS In the autumn of 2007 a total of 57 oncological rehabilitation centres treating a minimum of 50 patients with breast cancer (ICD-10: C50) annually were contacted with a written survey. The questionnaire was accompanied by an overview of performance data according to the KTL (Classification of Therapeutic Procedures) from 2006 allowing to determine the degree of adherence to the guideline's requirements. RESULTS Between 75% and 95% of the respondents agree that the rehabilitation guideline for breast cancer fulfils the quality attributes "scientific foundation (evidence)", "relevance for day-to-day work", "up-to-dateness", and "inter- and multidisciplinary development". 65% consider the guideline's comprehensiveness as "adequate" and structure and clarity as "rather to very structured". The individual chapters and treatment modules are "rather to very comprehensible" for 68% to 100%. Further information is needed especially with regard to "methodological overview", "information on the guideline's integration into the Pension Insurance's quality assurance programme", "scope" and "minimum percentage of patients requiring such treatment". Between 70% and 85% consider the KTL codes suggested to sufficiently represent the therapeutic contents of the treatment modules. 20% to 68% agree with the guideline's requirements regarding the "minimum percentage of patients requiring such treatment". In 7 of a total of 15 treatment modules the requirements are considered "adequate". The main reasons for insufficient adherence to the guideline's requirements are coding problems, as well as a high treatment volume and shortage of staff. The implementation of the guideline for the rehabilitation of patients with breast cancer raises positive and negative expectations. DISCUSSION The discussion centers around the normative standards regarding the minimum percentage of patients requiring such treatment that is considered too high in many modules. However, suggestions to alter the treatment requirements are at times quite heterogeneous. Coding problems should not be overrated as the performance data so far available date back to a period prior to introduction of the new KTL 2007. CONCLUSION At the end of the pilot phase the guideline will be revised where necessary, taking the rehabilitation centres' feedback into account. The Pension Insurance considers the guideline for the rehabilitation of patients with breast cancer an important addition to the quality assurance programme. According to the survey's results the guideline is generally accepted and realisable.
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Affiliation(s)
- M Winnefeld
- Deutsche Rentenversicherung Bund, Bereich 0420 - Reha-Wissenschaften, Berlin.
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Winnefeld M, Grewenig A, Schnölzer M, Spring H, Knoch TA, Gan EC, Rommelaere J, Cziepluch C. Human SGT interacts with Bag-6/Bat-3/Scythe and cells with reduced levels of either protein display persistence of few misaligned chromosomes and mitotic arrest. Exp Cell Res 2006; 312:2500-14. [PMID: 16777091 DOI: 10.1016/j.yexcr.2006.04.020] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2005] [Revised: 03/23/2006] [Accepted: 04/12/2006] [Indexed: 11/29/2022]
Abstract
The human small glutamine-rich TPR-containing protein (hSGT) is essential for cell division since RNA-interference-mediated strong reduction of hSGT protein levels causes mitotic arrest (M. Winnefeld, J. Rommelaere, and C. Cziepluch, The human small glutamine-rich TPR-containing protein is required for progress through cell division, Exp. Cell Res. 293 (2004), 43-57). Analysis of HeLa cells expressing a histone 2A-YFP fusion protein revealed the continuous presence of few mislocalized chromosomes close to the spindle poles as possible cause for hSGT depletion-dependent prometaphase arrest. Cells unable to rescue these mislocalized chromosomes into the metaphase plate died at this stage through apoptosis. In order to address hSGT function at the molecular level, mass spectrometry analysis of proteins which co-immunoprecipitated with Flag-tagged hSGT was performed. Thereby, Hsp70 and Bag-6/Bat-3/Scythe were identified as novel hSGT interaction partners while interaction with Hsc70 was confirmed. Results obtained with truncated versions of the hSGT protein revealed that Bag-6/Bat-3/Scythe and Hsp70 or Hsc70 were independently able to form complexes with hSGT. Interaction of hSGT with Hsc70, Hsp70 or Bag-6/Bat-3/Scythe was demonstrated in prometaphase, thereby suggesting a possible role for complexes containing hSGT and distinct (co)-chaperones during mitosis. Finally, cells from populations with reduced levels of Bag-6/Bat-3/Scythe also displayed persistence of mislocalized chromosomes and mitotic arrest, which strongly indicated that hSGT-Bag-6/Bat-3/Scythe complexes could be directly or indirectly required for complete chromosome congression.
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Affiliation(s)
- Marc Winnefeld
- Infection and Cancer Department, Abteilung F010 and Institut National de la Santé et de la Recherche Médicale U 701, Deutsches Krebsforschungszentrum, Postfach 101949, D-69120 Heidelberg, Germany
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Abstract
Eukaryotic organisms from yeast to human harbor genes encoding the small glutamine-rich tetratricopeptide repeat-containing (SGT) protein. Work presented here demonstrated the presence of human SGT (hSGT) protein in a panel of human cell lines and throughout the cell cycle. To identify cellular processes in which hSGT is involved, knock down populations were analyzed which were generated through transfection of hsgt-specific small interfering RNA. Most strikingly, depletion of hSGT led to reduced proliferation of the affected cell populations while the mitotic index was increased. Time-lapse video microscopy revealed that cells from hSGT-depleted populations were unable to complete cell division due to mitotic arrest which was frequently followed by cell death. Further evidence for a role in cell division was given by the accumulation of hSGT in the midzone and the midbody, and by a mitosis-specific migration pattern of hSGT as detected by Western blotting after SDS-PAGE or two-dimensional gel electrophoresis. In conclusion, results obtained in this study demonstrate that hSGT protein is a constitutive component of all human cell lines tested and that this protein is essential for successful completion of cell division.
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Affiliation(s)
- Marc Winnefeld
- Infection and Cancer Department-F010 and Institut National de la Santé et de la Recherche Médicale U 375, Deutsches Krebsforschungszentrum, D-69120 Heidelberg, Germany
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Abstract
BACKGROUND Hand decontamination is crucial to control nosocomial infections. The utility of hand decontamination is related not only to its antimicrobial effectiveness, but also to its acceptability by hospital staff. OBJECTIVES We aimed to assess skin tolerance and antimicrobial effects of two widely accepted hand hygiene measures under in-use conditions. METHODS Fifty-two nurses were randomly assigned for an 8-day period to either an alcohol-based disinfectant or a hand wash with a non-antiseptic soap. At baseline and at the end of the test period, microbiological hand samples were obtained both before and after a hand hygiene procedure, and skin tolerance was assessed using clinical scores and measurement of transepidermal water loss. RESULTS Self-assessment of skin condition and grade of skin damage worsened significantly more in the group using soap than in the group using alcoholic disinfectant (P = 0.004 and P = 0.01, respectively). The alcohol-based rinse was significantly more effective than liquid soap in removing transient contaminant micro-organisms (P = 0.016). Twenty of 50 hand washes with non-antiseptic soap apparently resulted in bacterial contamination of the hands. At the end of the study, the total bacterial count increased with the increasing number of hand washes in the soap group (P = 0.003), and with the degree of skin damage (P = 0.005) in the antiseptic group. CONCLUSIONS In everyday hospital practice, alcohol-based disinfectant is more effective and better tolerated than non-antiseptic soap; soap is at risk of spreading contamination; and skin comfort strongly influences the number and the quality of hand hygiene procedures.
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Affiliation(s)
- M Winnefeld
- Service de Médecine du Travail et des Risques Professionnels, Hôpital de la Timone, 7 Bd Jean Moulin, 13385 Marseille Cedex 5, France
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Winnefeld M, Richard M, Drancourt M, Grob J. Skin tolerance and effectiveness of two hand decontamination procedures in everyday hospital use. Br J Dermatol 2000. [DOI: 10.1046/j.1365-2133.2000.03708.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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