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Zhao M, Yin N, Yang R, Li S, Zhang S, Faiola F. Understanding the effects of per- and polyfluoroalkyl substances on early skin development: Role of ciliogenesis inhibition and altered microtubule dynamics. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 913:169702. [PMID: 38163615 DOI: 10.1016/j.scitotenv.2023.169702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 12/07/2023] [Accepted: 12/24/2023] [Indexed: 01/03/2024]
Abstract
Per- and polyfluoroalkyl substances (PFAS) are a class of highly stable chemicals, widely used in everyday products, and widespread in the environment, even in pregnant women. While epidemiological studies have linked prenatal exposure to PFAS with atopic dermatitis in children, little is known about their toxic effects on skin development, especially during the embryonic stage. In this study, we utilized human embryonic stem cells to generate non-neural ectoderm (NNE) cells and exposed them to six PFAS (perfluorooctanoic acid (PFOA), undecafluorohexanoic acid (PFHxA), heptafluorobutyric acid (PFBA), perfluorooctane sulfonate (PFOS), perfluorohexane sulfonate (PFHxS) and perfluorobutyric acid (PFBS)) during the differentiation process to assess their toxicity to early skin development. Our results showed that PFOS altered the spindle-like morphology of NNE cells to a pebble-like morphology, and disrupted several NNE markers, including KRT16, SMYD1, and WISP1. The six PFAS had a high potential to cause hypohidrotic ectodermal dysplasia (HED) by disrupting the expression levels of HED-relevant genes. Transcriptomic analysis revealed that PFOS treatment produced the highest number (1156) of differentially expressed genes (DEGs) among the six PFAS, including the keratinocyte-related genes KRT6A, KRT17, KRT18, KRT24, KRT40, and KRT81. Additionally, we found that PFOS treatment disturbed several signaling pathways that are involved in regulating skin cell fate decisions and differentiation, including TGF-β, NOTCH, Hedgehog, and Hippo signaling pathways. Interestingly, we discovered that PFOS inhibited, by partially interfering with the expression of cytoskeleton-related genes, the ciliogenesis of NNE cells, which is crucial for the intercellular transduction of the above-mentioned signaling pathways. Overall, our study suggests that PFAS can inhibit ciliogenesis and hamper the transduction of important signaling pathways, leading potential congenital skin diseases. It sheds light on the underlying mechanisms of early embryonic skin developmental toxicity and provides an explanation for the epidemiological data on PFAS. ENVIRONMENTAL IMPLICATION: We employed a model based on human embryonic stem cells to demonstrate that PFOS has the potential to elevate the risk of hypohidrotic ectodermal dysplasia. This is achieved by targeting cilia, inhibiting ciliogenesis, and subsequently disrupting crucial signaling pathways like TGF-β, NOTCH, Hedgehog, and Hippo, during the early phases of embryonic skin development. Our study highlights the dangers and potential impacts of six PFAS pollutants on human skin development. Additionally, we emphasize the importance of closely considering PFHxA, PFBA, PFHxS, and PFBS, as they have shown the capacity to modify gene expression levels, albeit to a lesser degree.
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Affiliation(s)
- Miaomiao Zhao
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Nuoya Yin
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Renjun Yang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shichang Li
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shuxian Zhang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Francesco Faiola
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
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Hou Y, He YX, Zhang JH, Wang SR, Zhang Y. Effects of bone morphogenetic proteins on epithelial repair. Exp Biol Med (Maywood) 2021; 246:2269-2277. [PMID: 34233522 DOI: 10.1177/15353702211028193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Epithelial tissue has important functions such as protection, secretion, and sensation. Epithelial damage is involved in various pathological processes. Bone morphogenetic proteins (BMPs) are a class of growth factors with multiple functions. They play important roles in epithelial cells, including in differentiation, proliferation, and migration during the repair of the epithelium. This article reviews the functions and mechanisms of the most profoundly studied BMPs in the process of epithelial damage repair and their clinical significance.
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Affiliation(s)
- Yu Hou
- Department of Ophthalmology, 2nd Hospital of Jilin University, Changchun 130041, China.,Norman Bethune Health Science Center of Jilin University, Changchun 130021, China
| | - Yu-Xi He
- Department of Ophthalmology, 2nd Hospital of Jilin University, Changchun 130041, China
| | - Jia-Hao Zhang
- Department of Ophthalmology, 2nd Hospital of Jilin University, Changchun 130041, China.,Norman Bethune Health Science Center of Jilin University, Changchun 130021, China
| | - Shu-Rong Wang
- Department of Ophthalmology, 2nd Hospital of Jilin University, Changchun 130041, China
| | - Yan Zhang
- Department of Ophthalmology, 2nd Hospital of Jilin University, Changchun 130041, China
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Single-cell RNA sequencing of human nail unit defines RSPO4 onychofibroblasts and SPINK6 nail epithelium. Commun Biol 2021; 4:692. [PMID: 34099859 PMCID: PMC8184830 DOI: 10.1038/s42003-021-02223-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Accepted: 05/11/2021] [Indexed: 02/05/2023] Open
Abstract
Research on human nail tissue has been limited by the restricted access to fresh specimen. Here, we studied transcriptome profiles of human nail units using polydactyly specimens. Single-cell RNAseq with 11,541 cells from 4 extra digits revealed nail-specific mesenchymal and epithelial cell populations, characterized by RSPO4 (major gene in congenital anonychia) and SPINK6, respectively. In situ RNA hybridization demonstrated the localization of RSPO4, MSX1 and WIF1 in onychofibroblasts suggesting the activation of WNT signaling. BMP-5 was also expressed in onychofibroblasts implicating the contribution of BMP signaling. SPINK6 expression distinguished the nail-specific keratinocytes from epidermal keratinocytes. RSPO4+ onychofibroblasts were distributed at close proximity with LGR6+ nail matrix, leading to WNT/β-catenin activation. In addition, we demonstrated RSPO4 was overexpressed in the fibroblasts of onychomatricoma and LGR6 was highly expressed at the basal layer of the overlying epithelial component, suggesting that onychofibroblasts may play an important role in the pathogenesis of onychomatricoma.
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Tremblay M, Viala S, Shafer ME, Graham-Paquin AL, Liu C, Bouchard M. Regulation of stem/progenitor cell maintenance by BMP5 in prostate homeostasis and cancer initiation. eLife 2020; 9:54542. [PMID: 32894216 PMCID: PMC7525654 DOI: 10.7554/elife.54542] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Accepted: 09/06/2020] [Indexed: 12/25/2022] Open
Abstract
Tissue homeostasis relies on the fine regulation between stem and progenitor cell maintenance and lineage commitment. In the adult prostate, stem cells have been identified in both basal and luminal cell compartments. However, basal stem/progenitor cell homeostasis is still poorly understood. We show that basal stem/progenitor cell maintenance is regulated by a balance between BMP5 self-renewal signal and GATA3 dampening activity. Deleting Gata3 enhances adult prostate stem/progenitor cells self-renewal capacity in both organoid and allograft assays. This phenotype results from a local increase in BMP5 activity in basal cells as shown by the impaired self-renewal capacity of Bmp5-deficient stem/progenitor cells. Strikingly, Bmp5 gene inactivation or BMP signaling inhibition with a small molecule inhibitor are also sufficient to delay prostate and skin cancer initiation of Pten-deficient mice. Together, these results establish BMP5 as a key regulator of basal prostate stem cell homeostasis and identifies a potential therapeutic approach against Pten-deficient cancers.
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Affiliation(s)
- Mathieu Tremblay
- Goodman Cancer Research Centre and Department of Biochemistry, McGill University, Montreal, Canada
| | - Sophie Viala
- Goodman Cancer Research Centre and Department of Biochemistry, McGill University, Montreal, Canada
| | - Maxwell Er Shafer
- Goodman Cancer Research Centre and Department of Biochemistry, McGill University, Montreal, Canada
| | - Adda-Lee Graham-Paquin
- Goodman Cancer Research Centre and Department of Biochemistry, McGill University, Montreal, Canada
| | - Chloe Liu
- Goodman Cancer Research Centre and Department of Biochemistry, McGill University, Montreal, Canada
| | - Maxime Bouchard
- Goodman Cancer Research Centre and Department of Biochemistry, McGill University, Montreal, Canada
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Karim MA, Samad A, Adhikari UK, Kader MA, Kabir MM, Islam MA, Hasan MN. A Multi-Omics Analysis of Bone Morphogenetic Protein 5 ( BMP5) mRNA Expression and Clinical Prognostic Outcomes in Different Cancers Using Bioinformatics Approaches. Biomedicines 2020; 8:E19. [PMID: 31973134 PMCID: PMC7168281 DOI: 10.3390/biomedicines8020019] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 12/27/2019] [Accepted: 01/17/2020] [Indexed: 12/11/2022] Open
Abstract
Cumulative studies have provided controversial evidence for the prognostic values of bone morphogenetic protein 5 (BMP5) in different types of cancers such as colon, breast, lung, bladder, and ovarian cancer. To address the inconsistent correlation of BMP5 expression with patient survival and molecular function of BMP5 in relation to cancer progression, we performed a systematic study to determine whether BMP5 could be used as a prognostic marker in human cancers. BMP5 expression and prognostic values were assessed using different bioinformatics tools such as ONCOMINE, GENT, TCGA, GEPIA, UALCAN, PrognoScan, PROGgene V2 server, and Kaplan-Meier Plotter. In addition, we used cBioPortal database for the identification and analysis of BMP5 mutations, copy number alterations, altered expression, and protein-protein interaction (PPI). We found that BMP5 is frequently down-regulated in our queried cancer types. Use of prognostic analysis showed negative association of BMP5 down-regulation with four types of cancer except for ovarian cancer. The highest mutation was found in the R321*/Q amino acid of BMP5 corresponding to colorectal and breast cancer whereas the alteration frequency was higher in lung squamous carcinoma datasets (>4%). In PPI analysis, we found 31 protein partners of BMP5, among which 11 showed significant co-expression (p-value < 0.001, log odds ratio > 1). Pathway analysis of differentially co-expressed genes with BMP5 in breast, lung, colon, bladder and ovarian cancers revealed the BMP5-correlated pathways. Collectively, this data-driven study demonstrates the correlation of BMP5 expression with patient survival and identifies the involvement of BMP5 pathways that may serve as targets of a novel biomarker for various types of cancers in human.
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Affiliation(s)
- Md. Adnan Karim
- Department of Genetic Engineering and Biotechnology, Jashore University of Science & Technology, Jashore 7408, Bangladesh
| | - Abdus Samad
- Department of Genetic Engineering and Biotechnology, Jashore University of Science & Technology, Jashore 7408, Bangladesh
| | - Utpal Kumar Adhikari
- School of Medicine, Western Sydney University, Campbelltown, NSW 2560, Australia
| | - Md. Ashraful Kader
- Department of Genetic Engineering and Biotechnology, Jashore University of Science & Technology, Jashore 7408, Bangladesh
| | - Md. Masnoon Kabir
- Laboratory Science & Service Division (LSSD), International Centre for Diarrhoeal Disease Research, Dhaka 1213, Bangladesh
| | - Md. Aminul Islam
- Department of Genetic Engineering and Biotechnology, Jashore University of Science & Technology, Jashore 7408, Bangladesh
| | - Md. Nazmul Hasan
- Department of Genetic Engineering and Biotechnology, Jashore University of Science & Technology, Jashore 7408, Bangladesh
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6
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Ragle LE, Bruno RD, Boulanger CA, Smith GH. Long-label-retaining mammary epithelial cells are created early in ductal development and distributed throughout the branching ducts. Mech Dev 2019; 159:103565. [PMID: 31336167 DOI: 10.1016/j.mod.2019.103565] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Long-label retention has been used by many to prove Cairns' immortal strand hypothesis and to identify potential stem cells. Here, we describe two strategies using 5-ethynl-2'-deoxyuridine (EdU) to identify and understand the distribution of long-label-retaining mammary epithelial cells during formation of the mouse mammary ductal system. First, EdU was given upon two consecutive days per week during weeks 4 through 10 and analyzed for label retention at 13 weeks of age. Alternatively, EdU was given for 14 consecutive days beginning at 28 days of age and ending at 42 days of age. Analyses were conducted at >91 days of age (13 weeks). Many more LREC were detected following the second labeling method and their distribution among the subsequently developed ducts. This finding indicated that the early-labeled cells that retained their label were distributed into portions of the gland that developed after the ending of EdU treatment (i.e. 42->91 days). These observations may have important meaning with respect to the previously demonstrated retention of regenerative capacity throughout the mouse mammary gland despite age or reproductive history. These results suggest LREC may represent long-lived progenitor cells that are responsible for mammary gland homeostasis. Additionally, these cells may act as multipotent stem cells capable of mammary gland regeneration upon random fragment transplantation into epithelium-denuded mammary fat pads.
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Affiliation(s)
- Lauren E Ragle
- Mammary Stem Cell Section, BRL, CCR, National Cancer Institute, Bethesda, MD 20892, United States of America
| | - Robert D Bruno
- School of Medical Diagnostic and Translational Sciences, College of Health Sciences, Old Dominion University, Norfolk, VA 23529, United States of America
| | - Corinne A Boulanger
- Mammary Stem Cell Section, BRL, CCR, National Cancer Institute, Bethesda, MD 20892, United States of America
| | - Gilbert H Smith
- Mammary Stem Cell Section, BRL, CCR, National Cancer Institute, Bethesda, MD 20892, United States of America.
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Park H, Lad S, Boland K, Johnson K, Readio N, Jin G, Asfaha S, Patterson KS, Singh A, Yang X, Londono D, Singh A, Trempus C, Gordon D, Wang TC, Morris RJ. Bone marrow-derived epithelial cells and hair follicle stem cells contribute to development of chronic cutaneous neoplasms. Nat Commun 2018; 9:5293. [PMID: 30546048 PMCID: PMC6294255 DOI: 10.1038/s41467-018-07688-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2014] [Accepted: 11/09/2018] [Indexed: 12/17/2022] Open
Abstract
We used allogeneic bone marrow transplantation (BMT) and a mouse multistage cutaneous carcinogenesis model to probe recruitment of bone marrow-derived epithelial cells (BMDECs) in skin tumors initiated with the carcinogen, dimethylbenz[a]anthracene (DMBA), and promoted with 12-O-tetradecanolyphorbol-13-acetate (TPA). BMDECs clustered in the lesional epithelium, expressed cytokeratins, proliferated, and stratified. We detected cytokeratin induction in plastic-adherent bone marrow cells (BMCs) cultured in the presence of filter-separated keratinocytes (KCs) and bone morphogenetic protein 5 (BMP5). Lineage-depleted BMCs migrated towards High Mobility Group Box 1 (HMGB1) protein and epidermal KCs in ex vivo invasion assays. Naive female mice receiving BMTs from DMBA-treated donors developed benign and malignant lesions after TPA promotion alone. We conclude that BMDECs contribute to the development of papillomas and dysplasia, demonstrating a systemic contribution to these lesions. Furthermore, carcinogen-exposed BMCs can initiate benign and malignant lesions upon tumor promotion. Ultimately, these findings may suggest targets for treatment of non-melanoma skin cancers.
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Affiliation(s)
- Heuijoon Park
- Department of Pathology and Cell Biology, Columbia University, New York, 10032, NY, USA
- Department of Dermatology, Columbia University, New York, 10032, NY, USA
- Division of Digestive and Liver Diseases, Department of Medicine and Irving Cancer Center, Columbia University, New York, 10032, NY, USA
- The Hormel Institute, University of Minnesota, Austin, 55912, MN, USA
| | - Sonali Lad
- The Hormel Institute, University of Minnesota, Austin, 55912, MN, USA
| | - Kelsey Boland
- The Hormel Institute, University of Minnesota, Austin, 55912, MN, USA
| | - Kelly Johnson
- The Hormel Institute, University of Minnesota, Austin, 55912, MN, USA
| | - Nyssa Readio
- The Hormel Institute, University of Minnesota, Austin, 55912, MN, USA
| | - Guangchun Jin
- Division of Digestive and Liver Diseases, Department of Medicine and Irving Cancer Center, Columbia University, New York, 10032, NY, USA
| | - Samuel Asfaha
- Division of Digestive and Liver Diseases, Department of Medicine and Irving Cancer Center, Columbia University, New York, 10032, NY, USA
| | - Kelly S Patterson
- Division of Digestive and Liver Diseases, Department of Medicine and Irving Cancer Center, Columbia University, New York, 10032, NY, USA
| | - Ashok Singh
- The Hormel Institute, University of Minnesota, Austin, 55912, MN, USA
| | - Xiangdong Yang
- Division of Digestive and Liver Diseases, Department of Medicine and Irving Cancer Center, Columbia University, New York, 10032, NY, USA
| | - Douglas Londono
- Department of Genetics, Rutgers, The State University of New Jersey, Piscataway, 08854-8082, NJ, USA
| | - Anupama Singh
- The Hormel Institute, University of Minnesota, Austin, 55912, MN, USA
| | - Carol Trempus
- Matrix Biology Group, Immunity, Inflammation, and Disease Laboratory, National Institute of Environmental Health Sciences, Research Triangle Park, 27709, NC, USA
| | - Derek Gordon
- Department of Genetics, Rutgers, The State University of New Jersey, Piscataway, 08854-8082, NJ, USA
| | - Timothy C Wang
- Division of Digestive and Liver Diseases, Department of Medicine and Irving Cancer Center, Columbia University, New York, 10032, NY, USA
| | - Rebecca J Morris
- Department of Pathology and Cell Biology, Columbia University, New York, 10032, NY, USA.
- Department of Dermatology, Columbia University, New York, 10032, NY, USA.
- The Hormel Institute, University of Minnesota, Austin, 55912, MN, USA.
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Silva-Vargas V, Maldonado-Soto AR, Mizrak D, Codega P, Doetsch F. Age-Dependent Niche Signals from the Choroid Plexus Regulate Adult Neural Stem Cells. Cell Stem Cell 2016; 19:643-652. [PMID: 27452173 DOI: 10.1016/j.stem.2016.06.013] [Citation(s) in RCA: 208] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Revised: 05/04/2016] [Accepted: 06/20/2016] [Indexed: 10/21/2022]
Abstract
Specialized niches support the lifelong maintenance and function of tissue-specific stem cells. Adult neural stem cells in the ventricular-subventricular zone (V-SVZ) contact the cerebrospinal fluid (CSF), which flows through the lateral ventricles. A largely ignored component of the V-SVZ stem cell niche is the lateral ventricle choroid plexus (LVCP), a primary producer of CSF. Here we show that the LVCP, in addition to performing important homeostatic support functions, secretes factors that promote colony formation and proliferation of purified quiescent and activated V-SVZ stem cells and transit-amplifying cells. The functional effect of the LVCP secretome changes throughout the lifespan, with activated neural stem cells being especially sensitive to age-related changes. Transcriptome analysis identified multiple factors that recruit colony formation and highlights novel facets of LVCP function. Thus, the LVCP is a key niche compartment that translates physiological changes into molecular signals directly affecting neural stem cell behavior.
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Affiliation(s)
- Violeta Silva-Vargas
- Biozentrum, University of Basel, 4056 Basel, Switzerland; Department of Pathology and Cell Biology, Columbia University, New York, NY 10032, USA
| | | | - Dogukan Mizrak
- Department of Pathology and Cell Biology, Columbia University, New York, NY 10032, USA
| | - Paolo Codega
- Department of Pathology and Cell Biology, Columbia University, New York, NY 10032, USA
| | - Fiona Doetsch
- Biozentrum, University of Basel, 4056 Basel, Switzerland; Department of Pathology and Cell Biology, Columbia University, New York, NY 10032, USA; Department of Neuroscience, Columbia University, New York, NY 10032, USA.
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Guenther CA, Wang Z, Li E, Tran MC, Logan CY, Nusse R, Pantalena-Filho L, Yang GP, Kingsley DM. A distinct regulatory region of the Bmp5 locus activates gene expression following adult bone fracture or soft tissue injury. Bone 2015; 77:31-41. [PMID: 25886903 PMCID: PMC4447581 DOI: 10.1016/j.bone.2015.04.010] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2014] [Revised: 04/02/2015] [Accepted: 04/04/2015] [Indexed: 12/25/2022]
Abstract
Bone morphogenetic proteins (BMPs) are key signaling molecules required for normal development of bones and other tissues. Previous studies have shown that null mutations in the mouse Bmp5 gene alter the size, shape and number of multiple bone and cartilage structures during development. Bmp5 mutations also delay healing of rib fractures in adult mutants, suggesting that the same signals used to pattern embryonic bone and cartilage are also reused during skeletal regeneration and repair. Despite intense interest in BMPs as agents for stimulating bone formation in clinical applications, little is known about the regulatory elements that control developmental or injury-induced BMP expression. To compare the DNA sequences that activate gene expression during embryonic bone formation and following acute injuries in adult animals, we assayed regions surrounding the Bmp5 gene for their ability to stimulate lacZ reporter gene expression in transgenic mice. Multiple genomic fragments, distributed across the Bmp5 locus, collectively coordinate expression in discrete anatomic domains during normal development, including in embryonic ribs. In contrast, a distinct regulatory region activated expression following rib fracture in adult animals. The same injury control region triggered gene expression in mesenchymal cells following tibia fracture, in migrating keratinocytes following dorsal skin wounding, and in regenerating epithelial cells following lung injury. The Bmp5 gene thus contains an "injury response" control region that is distinct from embryonic enhancers, and that is activated by multiple types of injury in adult animals.
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Affiliation(s)
- Catherine A Guenther
- Department of Developmental Biology, Stanford University School of Medicine, Stanford, CA, USA; Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, CA, USA
| | - Zhen Wang
- Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - Emma Li
- Department of Developmental Biology, Stanford University School of Medicine, Stanford, CA, USA; Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, CA, USA
| | - Misha C Tran
- Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - Catriona Y Logan
- Department of Developmental Biology, Stanford University School of Medicine, Stanford, CA, USA; Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, CA, USA
| | - Roel Nusse
- Department of Developmental Biology, Stanford University School of Medicine, Stanford, CA, USA; Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, CA, USA
| | - Luiz Pantalena-Filho
- Department of Developmental Biology, Stanford University School of Medicine, Stanford, CA, USA
| | - George P Yang
- Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA; Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, USA.
| | - David M Kingsley
- Department of Developmental Biology, Stanford University School of Medicine, Stanford, CA, USA; Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, CA, USA.
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Ito Y, Correll K, Schiel JA, Finigan JH, Prekeris R, Mason RJ. Lung fibroblasts accelerate wound closure in human alveolar epithelial cells through hepatocyte growth factor/c-Met signaling. Am J Physiol Lung Cell Mol Physiol 2014; 307:L94-105. [PMID: 24748602 DOI: 10.1152/ajplung.00233.2013] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
There are 190,600 cases of acute lung injury/acute respiratory distress syndrome (ALI/ARDS) each year in the United States, and the incidence and mortality of ALI/ARDS increase dramatically with age. Patients with ALI/ARDS have alveolar epithelial injury, which may be worsened by high-pressure mechanical ventilation. Alveolar type II (ATII) cells are the progenitor cells for the alveolar epithelium and are required to reestablish the alveolar epithelium during the recovery process from ALI/ARDS. Lung fibroblasts (FBs) migrate and proliferate early after lung injury and likely are an important source of growth factors for epithelial repair. However, how lung FBs affect epithelial wound healing in the human adult lung has not been investigated in detail. Hepatocyte growth factor (HGF) is known to be released mainly from FBs and to stimulate both migration and proliferation of primary rat ATII cells. HGF is also increased in lung tissue, bronchoalveolar lavage fluid, and serum in patients with ALI/ARDS. Therefore, we hypothesized that HGF secreted by FBs would enhance wound closure in alveolar epithelial cells (AECs). Wound closure was measured using a scratch wound-healing assay in primary human AEC monolayers and in a coculture system with FBs. We found that wound closure was accelerated by FBs mainly through HGF/c-Met signaling. HGF also restored impaired wound healing in AECs from the elderly subjects and after exposure to cyclic stretch. We conclude that HGF is the critical factor released from FBs to close wounds in human AEC monolayers and suggest that HGF is a potential strategy for hastening alveolar repair in patients with ALI/ARDS.
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Affiliation(s)
- Yoko Ito
- Department of Medicine, National Jewish Health, Denver, Colorado;
| | - Kelly Correll
- Department of Medicine, National Jewish Health, Denver, Colorado
| | - John A Schiel
- Department of Cell and Developmental Biology, University of Colorado, Aurora, Colorado
| | - Jay H Finigan
- Department of Medicine, National Jewish Health, Denver, Colorado
| | - Rytis Prekeris
- Department of Cell and Developmental Biology, University of Colorado, Aurora, Colorado
| | - Robert J Mason
- Department of Medicine, National Jewish Health, Denver, Colorado
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Fine mapping reveals that promotion susceptibility locus 1 (Psl1) is a compound locus with multiple genes that modify susceptibility to skin tumor development. G3-GENES GENOMES GENETICS 2014; 4:1071-9. [PMID: 24700353 PMCID: PMC4065250 DOI: 10.1534/g3.113.009688] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Although it is well known that the majority of human cancers occur as the result of exposure to environmental carcinogens, it is clear that not all individuals exposed to a specific environmental carcinogen have the same risk of developing cancer. Considerable evidence indicates that common allelic variants of low-penetrance, tumor susceptibility genes are responsible for this interindividual variation in risk. We previously reported a skin tumor promotion susceptibility locus, Psl1, which maps to the distal portion of chromosome 9, that modified skin tumor promotion susceptibility in the mouse. Furthermore, Psl1 was shown to consist of at least two subloci (i.e., Psl1.1 and Psl1.2) and that glutathione S-transferase alpha 4 (Gsta4), which maps to Psl1.2, is a skin tumor promotion susceptibility gene. Finally, variants of human GSTA4 were found to be associated with risk of nonmelanoma skin cancer. In the current study, a combination of nested and contiguous C57BL/6 congenic mouse strains, each inheriting a different portion of the Psl1 locus from DBA/2, were tested for susceptibility to skin tumor promotion with 12-O-tetradecanoylphorbol-13-acetate. These analyses indicate that Psl1 is a compound locus with at least six genes, including Gsta4, that modify skin tumor promotion susceptibility. More than 550 protein-coding genes map within the Psl1 locus. Fine mapping of the Psl1 locus, along with two-strain haplotype analysis, gene expression analysis, and the identification of genes with amino acid variants, has produced a list of fewer than 25 candidate skin tumor promotion susceptibility genes.
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Badeaux MA, Jeter CR, Gong S, Liu B, Suraneni MV, Rundhaug J, Fischer SM, Yang T, Kusewitt D, Tang DG. In vivo functional studies of tumor-specific retrogene NanogP8 in transgenic animals. Cell Cycle 2013; 12:2395-408. [PMID: 23839044 PMCID: PMC3841319 DOI: 10.4161/cc.25402] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
The current study was undertaken to investigate potential oncogenic functions of NanogP8, a tumor-specific retrogene homolog of Nanog (expressed in pluripotent cells), in transgenic animal models. To this end, human primary prostate tumor-derived NanogP8 was targeted to the cytokeratin 14 (K14) cellular compartment, and two lines of K14-NanogP8 mice were derived. The line 1 animals, expressing high levels of NanogP8, experienced perinatal lethality and developmental abnormalities in multiple organs, including the skin, tongue, eye, and thymus in surviving animals. On postnatal day 5 transgenic skin, for example, there was increased c-Myc expression and Ki-67(+) cells accompanied by profound abnormalities in skin development such as thickened interfollicular epidermis and dermis and lack of hypodermis and sebaceous glands. The line 3 mice, expressing low levels of NanogP8, were grossly normal except cataract development by 4-6 mo of age. Surprisingly, both lines of mice do not develop spontaneous tumors related to transgene expression. Even more unexpectedly, high levels of NanogP8 expression in L1 mice actually inhibited tumor development in a two-stage chemical carcinogenesis model. Mechanistic studies revealed that constitutive NanogP8 overexpression in adult L1 mice reduced CD34(+)α6(+) and Lrig-1(+) bulge stem cells, impaired keratinocyte migration, and repressed the expression of many stem cell-associated genes, including Bmp5, Fgfr2, Jmjd1a, and Jun. Our study, for the first time, indicates that transgenically expressed human NanogP8 is biologically functional, but suggests that high levels of NanogP8 may disrupt normal developmental programs and inhibit tumor development by depleting stem cells.
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Affiliation(s)
- Mark A Badeaux
- Department of Molecular Carcinogenesis; University of Texas MD Anderson Cancer Center; Smithville, TX USA; Program in Molecular Carcinogenesis; University of Texas Graduate School of Biomedical Sciences (GSBS); Houston, TX USA
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Romagnoli M, Belguise K, Yu Z, Wang X, Landesman-Bollag E, Seldin DC, Chalbos D, Barillé-Nion S, Jézéquel P, Seldin ML, Sonenshein GE. Epithelial-to-mesenchymal transition induced by TGF-β1 is mediated by Blimp-1-dependent repression of BMP-5. Cancer Res 2012; 72:6268-78. [PMID: 23054396 DOI: 10.1158/0008-5472.can-12-2270] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Induction of epithelial-to-mesenchymal transition (EMT) by TGF-β1 requires Ras signaling. We recently identified the transcriptional repressor Blimp-1 (PRDM1) as a downstream effector of the NF-κB, RelB/Bcl-2/Ras-driven pathway that promotes breast cancer cell migration. As the RelB/Blimp-1 pathway similarly required Ras signaling activation, we tested whether Blimp-1 plays a role in TGF-β1-mediated EMT. Here, TGF-β1 treatment of untransformed NMuMG mammary epithelial and MDA-MB-231 breast cancer cells was shown to induce Blimp-1 expression, which promoted an EMT signature and cell migration. TGFB1 and BLIMP1 RNA levels were correlated in patient breast tumors. BLIMP1 gene transcription was activated by TGF-β1 via a c-Raf (RAF1) to AP-1 pathway. Blimp-1 induced expression of the EMT master regulator Snail (SNAI1) via repressing BMP-5, which inhibited Snail expression upon TGF-β1 treatment. Interestingly, a similar cascade was observed during postnatal mouse mammary gland development. RelB expression was detected early in pregnancy followed progressively by Blimp-1 and then Snail; whereas, BMP-5 levels were high in nulliparous and regressing glands. Finally, lower BMP5 RNA levels were detected in patient breast tumors versus normal tissues, and correlated with cancer recurrence. Thus, the Ras effector Blimp-1 plays an essential role in TGF-β1-induced EMT via repression of BMP-5 in breast cancer.
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Affiliation(s)
- Mathilde Romagnoli
- Department of Biochemistry, Tufts University School of Medicine, Boston, MA 02111, USA
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Singh A, Park H, Kangsamaksin T, Singh A, Readio N, Morris RJ. Keratinocyte stem cells and the targets for nonmelanoma skin cancer. Photochem Photobiol 2012; 88:1099-110. [PMID: 22211846 DOI: 10.1111/j.1751-1097.2012.01079.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The mammalian skin is a complex dynamic organ composed of thin multilayered epidermis and a thick underlying connective tissue layer dermis. The epidermis undergoes continuous renewal throughout life. The stems cells uniquely express particular surface markers utilized for their identification, isolation and localization in specific niches in epidermis as well as hair follicles (HFs). The two stage skin carcinogenesis model involves stepwise accumulation of genetic alterations and ultimately leading to malignancy. Whereas early research on skin carcinogenesis focused on the molecular nature of carcinogens and tumor promoters, more recent studies have focused on the identification of the target cells and tumor promoting cells for both chemical and physical carcinogens and promoters. Recent studies support the hypothesis that keratinocyte stem cells are the targets in skin carcinogenesis. In this review, we discuss briefly the localization of stem cells in the epidermis and HFs, and review the possibility that skin papillomas and carcinomas are derived from stem cells, as well as from other cells in the cutaneous epithelium whose stem cell properties are not well known.
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Affiliation(s)
- Ashok Singh
- Laboratory on Stem Cells and Cancer, The Hormel Institute/University of Minnesota, Austin, MN, USA
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Saurat JH, Kaya G, Saxer-Sekulic N, Pardo B, Becker M, Fontao L, Mottu F, Carraux P, Pham XC, Barde C, Fontao F, Zennegg M, Schmid P, Schaad O, Descombes P, Sorg O. The cutaneous lesions of dioxin exposure: lessons from the poisoning of Victor Yushchenko. Toxicol Sci 2011; 125:310-7. [PMID: 21998131 DOI: 10.1093/toxsci/kfr223] [Citation(s) in RCA: 100] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Several million people are exposed to dioxin and dioxin-like compounds, primarily through food consumption. Skin lesions historically called "chloracne" are the most specific sign of abnormal dioxin exposure and classically used as a key marker in humans. We followed for 5 years a man who had been exposed to the most toxic dioxin, 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD), at a single oral dose of 5 million-fold more than the accepted daily exposure in the general population. We adopted a molecular medicine approach, aimed at identifying appropriate therapy. Skin lesions, which progressively covered up to 40% of the body surface, were found to be hamartomas, which developed parallel to a complete and sustained involution of sebaceous glands, with concurrent transcriptomic alterations pointing to the inhibition of lipid metabolism and the involvement of bone morphogenetic proteins signaling. Hamartomas created a new compartment that concentrated TCDD up to 10-fold compared with serum and strongly expressed the TCDD-metabolizing enzyme cytochrome P450 1A1, thus representing a potentially significant source of enzymatic activity, which may add to the xenobiotic metabolism potential of the classical organs such as the liver. This historical case provides a unique set of data on the human tissue response to dioxin for the identification of new markers of exposure in human populations. The herein discovered adaptive cutaneous response to TCDD also points to the potential role of the skin in the metabolism of food xenobiotics.
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Affiliation(s)
- Jean-Hilaire Saurat
- Swiss Centre for Applied Human Toxicology, Dermatotoxicology Unit, University of Geneva, 1211 Geneva 4, Switzerland.
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