1
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Ligunas GD, Paniagua GF, LaBelle J, Ramos-Martinez A, Shen K, Gerlt EH, Aguilar K, Nguyen N, Materna SC, Woo S. Tissue-specific and endogenous protein labeling with split fluorescent proteins. Dev Biol 2024; 514:109-116. [PMID: 38908500 DOI: 10.1016/j.ydbio.2024.06.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2024] [Revised: 06/18/2024] [Accepted: 06/19/2024] [Indexed: 06/24/2024]
Abstract
The ability to label proteins by fusion with genetically encoded fluorescent proteins is a powerful tool for understanding dynamic biological processes. However, current approaches for expressing fluorescent protein fusions possess drawbacks, especially at the whole organism level. Expression by transgenesis risks potential overexpression artifacts while fluorescent protein insertion at endogenous loci is technically difficult and, more importantly, does not allow for tissue-specific study of broadly expressed proteins. To overcome these limitations, we have adopted the split fluorescent protein system mNeonGreen21-10/11 (split-mNG2) to achieve tissue-specific and endogenous protein labeling in zebrafish. In our approach, mNG21-10 is expressed under a tissue-specific promoter using standard transgenesis while mNG211 is inserted into protein-coding genes of interest using CRISPR/Cas-directed gene editing. Each mNG2 fragment on its own is not fluorescent, but when co-expressed the fragments self-assemble into a fluorescent complex. Here, we report successful use of split-mNG2 to achieve differential labeling of the cytoskeleton genes tubb4b and krt8 in various tissues. We also demonstrate that by anchoring the mNG21-10 component to specific cellular compartments, the split-mNG2 system can be used to manipulate protein localization. Our approach should be broadly useful for a wide range of applications.
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Affiliation(s)
- Gloria D Ligunas
- Department of Molecular and Cell Biology, University of California, Merced, CA, USA; Quantitative and Systems Biology Graduate Group, University of California, Merced, CA, USA
| | - German F Paniagua
- Department of Molecular and Cell Biology, University of California, Merced, CA, USA
| | - Jesselynn LaBelle
- Department of Molecular and Cell Biology, University of California, Merced, CA, USA; Quantitative and Systems Biology Graduate Group, University of California, Merced, CA, USA
| | - Adela Ramos-Martinez
- Department of Molecular and Cell Biology, University of California, Merced, CA, USA
| | - Kyle Shen
- Department of Molecular and Cell Biology, University of California, Merced, CA, USA
| | - Emma H Gerlt
- Department of Molecular and Cell Biology, University of California, Merced, CA, USA
| | - Kaddy Aguilar
- Department of Molecular and Cell Biology, University of California, Merced, CA, USA
| | - Ngoc Nguyen
- Department of Molecular and Cell Biology, University of California, Merced, CA, USA
| | - Stefan C Materna
- Department of Molecular and Cell Biology, University of California, Merced, CA, USA; Quantitative and Systems Biology Graduate Group, University of California, Merced, CA, USA; Health Sciences Research Institute, University of California, Merced, CA, USA
| | - Stephanie Woo
- Department of Molecular and Cell Biology, University of California, Merced, CA, USA; Quantitative and Systems Biology Graduate Group, University of California, Merced, CA, USA; Health Sciences Research Institute, University of California, Merced, CA, USA.
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2
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Ebrahimi A, Mehrabi M, Miraghaee SS, Mohammadi P, Fatehi Kafash F, Delfani M, Khodarahmi R. Flavonoid compounds and their synergistic effects: Promising approaches for the prevention and treatment of psoriasis with emphasis on keratinocytes - A systematic and mechanistic review. Int Immunopharmacol 2024; 138:112561. [PMID: 38941673 DOI: 10.1016/j.intimp.2024.112561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2024] [Revised: 06/16/2024] [Accepted: 06/23/2024] [Indexed: 06/30/2024]
Abstract
Psoriasis, a chronic autoimmune skin disorder, causes rapid and excessive skin cell growth due to immune system dysfunction. Numerous studies have shown that flavonoids have anti-psoriatic effects by modulating various molecular mechanisms involved in inflammation, cytokine production, keratinocyte proliferation, and more. This study reviewed experimental data reported in scientific literature and used network analysis to identify the potential biological roles of flavonoids' targets in treating psoriasis. 947 records from Web of Sciences, ScienceDirect database, Scopus, PubMed, and Cochrane library were reviewed without limitations until June 26, 2023. 66 articles were included in the systematic review. The ten genes with the highest scores, including interleukin (IL)-10, IL-12A, IL-1β, IL-6, Tumor necrosis factor-α (TNF-α), Janus kinase 2 (JAK 2), Jun N-terminal kinase (JUN), Proto-oncogene tyrosine-protein kinase Src (SRC), Phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha (PIK3CA), and Signal transducer and activator of transcription 3 (STAT3), were identified as the hub genes. KEGG pathway analysis identified connections related to inflammation and autoimmune responses, which are key characteristics of psoriasis. IL-6, STAT3, and JUN's presence in both hub and enrichment genes suggests their important role in flavonoid's effect on psoriasis. This comprehensive study highlights how flavonoids can target biological processes in psoriasis, especially when combined for enhanced effectiveness.
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Affiliation(s)
- Ali Ebrahimi
- Department of Dermatology, Hajdaie Dermatology Clinic, School of Medicine, Kermanshah University of Medical Sciences (KUMS), Kermanshah, Iran
| | - Masomeh Mehrabi
- Medical Biology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran.
| | - Seyyed Shahram Miraghaee
- Medical Biology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Pantea Mohammadi
- Medical Biology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Fatemeh Fatehi Kafash
- Medical Biology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran; Student Research Committee, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Mohana Delfani
- Medical Biology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Reza Khodarahmi
- Medical Biology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran; Department of Pharmacognosy and Biotechnology, Faculty of Pharmacy, Kermanshah University of Medical Sciences, Kermanshah, Iran.
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3
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Sachslehner AP, Surbek M, Holthaus KB, Steinbinder J, Golabi B, Hess C, Eckhart L. The Evolution of Transglutaminases Underlies the Origin and Loss of Cornified Skin Appendages in Vertebrates. Mol Biol Evol 2024; 41:msae100. [PMID: 38781495 DOI: 10.1093/molbev/msae100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Revised: 04/11/2024] [Accepted: 05/20/2024] [Indexed: 05/25/2024] Open
Abstract
Transglutaminases (TGMs) cross-link proteins by introducing covalent bonds between glutamine and lysine residues. These cross-links are essential for epithelial cornification which enables tetrapods to live on land. Here, we investigated which evolutionary adaptations of vertebrates were associated with specific changes in the family of TGM genes. We determined the catalog of TGMs in the main clades of vertebrates, performed a comprehensive phylogenetic analysis of TGMs, and localized the distribution of selected TGMs in tissues. Our data suggest that TGM1 is the phylogenetically oldest epithelial TGM, with orthologs being expressed in the cornified teeth of the lamprey, a basal vertebrate. Gene duplications led to the origin of TGM10 in stem vertebrates, the origin of TGM2 in jawed vertebrates, and an increasing number of epithelium-associated TGM genes in the lineage leading to terrestrial vertebrates. TGM9 is expressed in the epithelial egg tooth, and its evolutionary origin in stem amniotes coincided with the evolution of embryonic development in eggs that are surrounded by a protective shell. Conversely, viviparous mammals have lost both the epithelial egg tooth and TGM9. TGM3 and TGM6 evolved as regulators of cornification in hair follicles and underwent pseudogenization upon the evolutionary loss of hair in cetaceans. Taken together, this study reveals the gain and loss of vertebrate TGM genes in association with the evolution of cornified skin appendages and suggests an important role of TGM9 in the evolution of amniotes.
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Affiliation(s)
| | - Marta Surbek
- Department of Dermatology, Medical University of Vienna, 1090 Vienna, Austria
| | | | - Julia Steinbinder
- Department of Dermatology, Medical University of Vienna, 1090 Vienna, Austria
| | - Bahar Golabi
- Department of Dermatology, Medical University of Vienna, 1090 Vienna, Austria
| | - Claudia Hess
- Clinic for Poultry and Fish Medicine, Department for Farm Animals and Veterinary Public Health, University of Veterinary Medicine Vienna, 1210 Vienna, Austria
| | - Leopold Eckhart
- Department of Dermatology, Medical University of Vienna, 1090 Vienna, Austria
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4
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Ligunas GD, Paniagua G, LaBelle J, Ramos-Martinez A, Shen K, Gerlt EH, Aguilar K, Nguyen A, Materna SC, Woo S. Tissue-specific and endogenous protein labeling with split fluorescent proteins. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.02.28.581822. [PMID: 38464062 PMCID: PMC10925240 DOI: 10.1101/2024.02.28.581822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/12/2024]
Abstract
The ability to label proteins by fusion with genetically encoded fluorescent proteins is a powerful tool for understanding dynamic biological processes. However, current approaches for expressing fluorescent protein fusions possess drawbacks, especially at the whole organism level. Expression by transgenesis risks potential overexpression artifacts while fluorescent protein insertion at endogenous loci is technically difficult and, more importantly, does not allow for tissue-specific study of broadly expressed proteins. To overcome these limitations, we have adopted the split fluorescent protein system mNeonGreen21-10/11 (split-mNG2) to achieve tissue-specific and endogenous protein labeling in zebrafish. In our approach, mNG21-10 is expressed under a tissue-specific promoter using standard transgenesis while mNG211 is inserted into protein-coding genes of interest using CRISPR/Cas-directed gene editing. Each mNG2 fragment on its own is not fluorescent, but when co-expressed the fragments self-assemble into a fluorescent complex. Here, we report successful use of split-mNG2 to achieve differential labeling of the cytoskeleton genes tubb4b and krt8 in various tissues. We also demonstrate that by anchoring the mNG21-10 component to specific cellular compartments, the split-mNG2 system can be used to manipulate protein function. Our approach should be broadly useful for a wide range of applications.
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Affiliation(s)
- Gloria D. Ligunas
- Department of Molecular Cell Biology, University of California, Merced, CA USA
- Quantitative and Systems Biology Graduate Group, University of California, Merced, CA USA
| | - German Paniagua
- Department of Molecular Cell Biology, University of California, Merced, CA USA
| | - Jesselynn LaBelle
- Department of Molecular Cell Biology, University of California, Merced, CA USA
- Quantitative and Systems Biology Graduate Group, University of California, Merced, CA USA
| | | | - Kyle Shen
- Department of Molecular Cell Biology, University of California, Merced, CA USA
| | - Emma H. Gerlt
- Department of Molecular Cell Biology, University of California, Merced, CA USA
| | - Kaddy Aguilar
- Department of Molecular Cell Biology, University of California, Merced, CA USA
| | - Alice Nguyen
- Department of Molecular Cell Biology, University of California, Merced, CA USA
| | - Stefan C. Materna
- Department of Molecular Cell Biology, University of California, Merced, CA USA
- Quantitative and Systems Biology Graduate Group, University of California, Merced, CA USA
- Health Sciences Research Institute, University of California, Merced, CA USA
| | - Stephanie Woo
- Department of Molecular Cell Biology, University of California, Merced, CA USA
- Quantitative and Systems Biology Graduate Group, University of California, Merced, CA USA
- Health Sciences Research Institute, University of California, Merced, CA USA
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5
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Hatzold J, Nett V, Brantsch S, Zhang JL, Armistead J, Wessendorf H, Stephens R, Humbert PO, Iden S, Hammerschmidt M. Matriptase-dependent epidermal pre-neoplasm in zebrafish embryos caused by a combination of hypotonic stress and epithelial polarity defects. PLoS Genet 2023; 19:e1010873. [PMID: 37566613 PMCID: PMC10446194 DOI: 10.1371/journal.pgen.1010873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 08/23/2023] [Accepted: 07/17/2023] [Indexed: 08/13/2023] Open
Abstract
Aberrantly up-regulated activity of the type II transmembrane protease Matriptase-1 has been associated with the development and progression of a range of epithelial-derived carcinomas, and a variety of signaling pathways can mediate Matriptase-dependent tumorigenic events. During mammalian carcinogenesis, gain of Matriptase activity often results from imbalanced ratios between Matriptase and its cognate transmembrane inhibitor Hai1. Similarly, in zebrafish, unrestrained Matriptase activity due to loss of hai1a results in epidermal pre-neoplasms already during embryogenesis. Here, based on our former findings of a similar tumor-suppressive role for the Na+/K+-pump beta subunit ATP1b1a, we identify epithelial polarity defects and systemic hypotonic stress as another mode of aberrant Matriptase activation in the embryonic zebrafish epidermis in vivo. In this case, however, a different oncogenic pathway is activated which contains PI3K, AKT and NFkB, rather than EGFR and PLD (as in hai1a mutants). Strikingly, epidermal pre-neoplasm is only induced when epithelial polarity defects in keratinocytes (leading to disturbed Matriptase subcellular localization) occur in combination with systemic hypotonic stress (leading to increased proteolytic activity of Matriptase). A similar combinatorial effect of hypotonicity and loss of epithelial polarity was also obtained for the activity levels of Matriptase-1 in human MCF-10A epithelial breast cells. Together, this is in line with the multi-factor concept of carcinogenesis, with the notion that such factors can even branch off from one and the same initiator (here ATP1a1b) and can converge again at the level of one and the same mediator (here Matriptase). In sum, our data point to tonicity and epithelial cell polarity as evolutionarily conserved regulators of Matriptase activity that upon de-regulation can constitute an alternative mode of Matriptase-dependent carcinogenesis in vivo.
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Affiliation(s)
- Julia Hatzold
- Institute of Zoology–Developmental Biology, University of Cologne, Germany
| | - Verena Nett
- Cell and Developmental Biology, Center of Human and Molecular Biology (ZHMB), Saarland University, Faculty of Medicine, Homburg/Saar, Germany
| | - Stephanie Brantsch
- Institute of Zoology–Developmental Biology, University of Cologne, Germany
| | - Jin-Li Zhang
- Institute of Zoology–Developmental Biology, University of Cologne, Germany
| | - Joy Armistead
- Institute of Zoology–Developmental Biology, University of Cologne, Germany
- Center for Molecular Medicine Cologne (CMMC), University Hospital Cologne, Cologne, Germany
| | - Heike Wessendorf
- Institute of Zoology–Developmental Biology, University of Cologne, Germany
| | - Rebecca Stephens
- Department of Biochemistry & Chemistry, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, Australia
| | - Patrick O. Humbert
- Department of Biochemistry & Chemistry, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, Australia
- Department of Biochemistry and Pharmacology, University of Melbourne, Melbourne, Victoria, Australia
- Department of Clinical Pathology, University of Melbourne, Melbourne, Victoria, Australia
| | - Sandra Iden
- Cell and Developmental Biology, Center of Human and Molecular Biology (ZHMB), Saarland University, Faculty of Medicine, Homburg/Saar, Germany
| | - Matthias Hammerschmidt
- Institute of Zoology–Developmental Biology, University of Cologne, Germany
- Center for Molecular Medicine Cologne (CMMC), University Hospital Cologne, Cologne, Germany
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6
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Stabell AR, Lee GE, Jia Y, Wong KN, Wang S, Ling J, Nguyen SD, Sen GL, Nie Q, Atwood SX. Single-cell transcriptomics of human-skin-equivalent organoids. Cell Rep 2023; 42:112511. [PMID: 37195865 PMCID: PMC10348600 DOI: 10.1016/j.celrep.2023.112511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 03/07/2023] [Accepted: 04/28/2023] [Indexed: 05/19/2023] Open
Abstract
Several methods for generating human-skin-equivalent (HSE) organoid cultures are in use to study skin biology; however, few studies thoroughly characterize these systems. To fill this gap, we use single-cell transcriptomics to compare in vitro HSEs, xenograft HSEs, and in vivo epidermis. By combining differential gene expression, pseudotime analyses, and spatial localization, we reconstruct HSE keratinocyte differentiation trajectories that recapitulate known in vivo epidermal differentiation pathways and show that HSEs contain major in vivo cellular states. However, HSEs also develop unique keratinocyte states, an expanded basal stem cell program, and disrupted terminal differentiation. Cell-cell communication modeling shows aberrant epithelial-to-mesenchymal transition (EMT)-associated signaling pathways that alter upon epidermal growth factor (EGF) supplementation. Last, xenograft HSEs at early time points post transplantation significantly rescue many in vitro deficits while undergoing a hypoxic response that drives an alternative differentiation lineage. This study highlights the strengths and limitations of organoid cultures and identifies areas for potential innovation.
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Affiliation(s)
- Adam R Stabell
- Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA 92697, USA; NSF-Simons Center for Multiscale Cell Fate Research, University of California, Irvine, Irvine, CA 92697, USA
| | - Grace E Lee
- Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA 92697, USA
| | - Yunlong Jia
- Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA 92697, USA
| | - Kirsten N Wong
- Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA 92697, USA; NSF-Simons Center for Multiscale Cell Fate Research, University of California, Irvine, Irvine, CA 92697, USA
| | - Shuxiong Wang
- Department of Mathematics, University of California, Irvine, Irvine, CA 92697, USA
| | - Ji Ling
- Department of Dermatology, University of California, San Diego, La Jolla, CA 92093, USA
| | - Sandrine D Nguyen
- Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA 92697, USA
| | - George L Sen
- Department of Dermatology, University of California, San Diego, La Jolla, CA 92093, USA; Department of Cellular and Molecular Medicine, UCSD Stem Cell Program, University of California, San Diego, La Jolla, CA 92093, USA
| | - Qing Nie
- Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA 92697, USA; NSF-Simons Center for Multiscale Cell Fate Research, University of California, Irvine, Irvine, CA 92697, USA; Department of Mathematics, University of California, Irvine, Irvine, CA 92697, USA; Center for Complex Biological Systems, Chao Family Comprehensive Cancer Center, University of California, Irvine, Irvine, CA 92697, USA
| | - Scott X Atwood
- Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA 92697, USA; NSF-Simons Center for Multiscale Cell Fate Research, University of California, Irvine, Irvine, CA 92697, USA; Center for Complex Biological Systems, Chao Family Comprehensive Cancer Center, University of California, Irvine, Irvine, CA 92697, USA; Department of Dermatology, University of California, Irvine, Irvine, CA 92697, USA.
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7
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Mi J, Andersson O. Efficient knock-in method enabling lineage tracing in zebrafish. Life Sci Alliance 2023; 6:e202301944. [PMID: 36878640 PMCID: PMC9990459 DOI: 10.26508/lsa.202301944] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 02/22/2023] [Accepted: 02/23/2023] [Indexed: 03/08/2023] Open
Abstract
Here, we devised a cloning-free 3' knock-in strategy for zebrafish using PCR amplified dsDNA donors that avoids disrupting the targeted genes. The dsDNA donors carry genetic cassettes coding for fluorescent proteins and Cre recombinase in frame with the endogenous gene but separated from it by self-cleavable peptides. Primers with 5' AmC6 end-protections generated PCR amplicons with increased integration efficiency that were coinjected with preassembled Cas9/gRNA ribonucleoprotein complexes for early integration. We targeted four genetic loci (krt92, nkx6.1, krt4, and id2a) and generated 10 knock-in lines, which function as reporters for the endogenous gene expression. The knocked-in iCre or CreERT2 lines were used for lineage tracing, which suggested that nkx6.1 + cells are multipotent pancreatic progenitors that gradually restrict to the bipotent duct, whereas id2a + cells are multipotent in both liver and pancreas and gradually restrict to ductal cells. In addition, the hepatic id2a + duct show progenitor properties upon extreme hepatocyte loss. Thus, we present an efficient and straightforward knock-in technique with widespread use for cellular labelling and lineage tracing.
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Affiliation(s)
- Jiarui Mi
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden
| | - Olov Andersson
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden
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8
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Russo I, Sartor E, Fagotto L, Colombo A, Tiso N, Alaibac M. The Zebrafish model in dermatology: an update for clinicians. Discov Oncol 2022; 13:48. [PMID: 35713744 PMCID: PMC9206045 DOI: 10.1007/s12672-022-00511-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 06/08/2022] [Indexed: 11/04/2022] Open
Abstract
Recently, the zebrafish has been established as one of the most important model organisms for medical research. Several studies have proved that there is a high level of similarity between human and zebrafish genomes, which encourages the use of zebrafish as a model for understanding human genetic disorders, including cancer. Interestingly, zebrafish skin shows several similarities to human skin, suggesting that this model organism is particularly suitable for the study of neoplastic and inflammatory skin disorders. This paper appraises the specific characteristics of zebrafish skin and describes the major applications of the zebrafish model in dermatological research.
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Affiliation(s)
- Irene Russo
- Unit of Dermatology, University of Padua, Via Gallucci 4, 35128, Padua, Italy
| | - Emma Sartor
- Unit of Dermatology, University of Padua, Via Gallucci 4, 35128, Padua, Italy
| | - Laura Fagotto
- Unit of Dermatology, University of Padua, Via Gallucci 4, 35128, Padua, Italy
| | - Anna Colombo
- Unit of Dermatology, University of Padua, Via Gallucci 4, 35128, Padua, Italy
| | - Natascia Tiso
- Department of Biology, University of Padua, Via U. Bassi 58/B, 35131, Padua, Italy
| | - Mauro Alaibac
- Unit of Dermatology, University of Padua, Via Gallucci 4, 35128, Padua, Italy.
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9
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Huysseune A, Cerny R, Witten PE. The conundrum of pharyngeal teeth origin: the role of germ layers, pouches, and gill slits. Biol Rev Camb Philos Soc 2021; 97:414-447. [PMID: 34647411 PMCID: PMC9293187 DOI: 10.1111/brv.12805] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 09/27/2021] [Accepted: 09/29/2021] [Indexed: 12/15/2022]
Abstract
There are several competing hypotheses on tooth origins, with discussions eventually settling in favour of an 'outside-in' scenario, in which internal odontodes (teeth) derived from external odontodes (skin denticles) in jawless vertebrates. The evolution of oral teeth from skin denticles can be intuitively understood from their location at the mouth entrance. However, the basal condition for jawed vertebrates is arguably to possess teeth distributed throughout the oropharynx (i.e. oral and pharyngeal teeth). As skin denticle development requires the presence of ectoderm-derived epithelium and of mesenchyme, it remains to be answered how odontode-forming skin epithelium, or its competence, were 'transferred' deep into the endoderm-covered oropharynx. The 'modified outside-in' hypothesis for tooth origins proposed that this transfer was accomplished through displacement of odontogenic epithelium, that is ectoderm, not only through the mouth, but also via any opening (e.g. gill slits) that connects the ectoderm to the epithelial lining of the pharynx (endoderm). This review explores from an evolutionary and from a developmental perspective whether ectoderm plays a role in (pharyngeal) tooth and denticle formation. Historic and recent studies on tooth development show that the odontogenic epithelium (enamel organ) of oral or pharyngeal teeth can be of ectodermal, endodermal, or of mixed ecto-endodermal origin. Comprehensive data are, however, only available for a few taxa. Interestingly, in these taxa, the enamel organ always develops from the basal layer of a stratified epithelium that is at least bilayered. In zebrafish, a miniaturised teleost that only retains pharyngeal teeth, an epithelial surface layer with ectoderm-like characters is required to initiate the formation of an enamel organ from the basal, endodermal epithelium. In urodele amphibians, the bilayered epithelium is endodermal, but the surface layer acquires ectodermal characters, here termed 'epidermalised endoderm'. Furthermore, ectoderm-endoderm contacts at pouch-cleft boundaries (i.e. the prospective gill slits) are important for pharyngeal tooth initiation, even if the influx of ectoderm via these routes is limited. A balance between sonic hedgehog and retinoic acid signalling could operate to assign tooth-initiating competence to the endoderm at the level of any particular pouch. In summary, three characters are identified as being required for pharyngeal tooth formation: (i) pouch-cleft contact, (ii) a stratified epithelium, of which (iii) the apical layer adopts ectodermal features. These characters delimit the area in which teeth can form, yet cannot alone explain the distribution of teeth over the different pharyngeal arches. The review concludes with a hypothetical evolutionary scenario regarding the persisting influence of ectoderm on pharyngeal tooth formation. Studies on basal osteichthyans with less-specialised types of early embryonic development will provide a crucial test for the potential role of ectoderm in pharyngeal tooth formation and for the 'modified outside-in' hypothesis of tooth origins.
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Affiliation(s)
- Ann Huysseune
- Research Group Evolutionary Developmental Biology, Biology Department, Ghent University, K.L. Ledeganckstraat 35, Ghent, B-9000, Belgium
| | - Robert Cerny
- Department of Zoology, Faculty of Science, Charles University, Vinicna 7, Prague, 128 44, Czech Republic
| | - P Eckhard Witten
- Research Group Evolutionary Developmental Biology, Biology Department, Ghent University, K.L. Ledeganckstraat 35, Ghent, B-9000, Belgium
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10
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Dai X, Pu D, Wang L, Cheng X, Liu X, Yin Z, Wang Z. Emergence of breeding tubercles and puberty onset in male zebrafish: evidence for a dependence on body growth. JOURNAL OF FISH BIOLOGY 2021; 99:1071-1078. [PMID: 34037242 DOI: 10.1111/jfb.14811] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 03/31/2021] [Accepted: 05/23/2021] [Indexed: 06/12/2023]
Abstract
The presence of breeding tubercles (BTs) on the pectoral fins has been investigated as a typical male secondary sexual characteristic (SSC) that distinguish males from females in adult zebrafish. Nonetheless, the earliest occurrence of these tubercles and its association with puberty onset and body growth remain unclear. In this study, using morphological, histological and statistical analyses, the authors examined the first appearance of BTs and puberty onset in male zebrafish, with particular emphasis on the potential impact of body growth on them. The results of this study revealed that BTs distributed along the first five branched pectoral fin rays were the earliest manifestation of male SSCs, which is significantly strongly correlated with body weight (R2 = 0.9609, P < 0.001), and could be used as a "gold standard" for the earliest sex distinction (<0.1 g in weight). Using the first appearance of BTs (<0.20 mm2 ) as a metric, the authors established that male puberty commenced at a body weight of c. 0.056 ± 0.015 g or a standard length of 10.99 ± 1.051 mm (mean ± S.D.). In this study, the authors thus established a simple method that can be used to sex live zebrafish at the pubertal stage and provides the first evidence for the relationship of BTs and male puberty initiation with body growth. These findings will accordingly lay a foundation for exploring mechanisms of the SSCs and male puberty onset in zebrafish and other teleost fish.
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Affiliation(s)
- Xiangyan Dai
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, School of Life Sciences, Southwest University, Chongqing, China
| | - Deyong Pu
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, School of Life Sciences, Southwest University, Chongqing, China
| | - Liping Wang
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, School of Life Sciences, Southwest University, Chongqing, China
| | - Xinkai Cheng
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, School of Life Sciences, Southwest University, Chongqing, China
| | - Xiaoqin Liu
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, School of Life Sciences, Southwest University, Chongqing, China
| | - Zhan Yin
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Zhijian Wang
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, School of Life Sciences, Southwest University, Chongqing, China
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11
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Deng Y, Meng M, Fang J, Jiang H, Sun N, Lv W, Lei Y, Wang C, Bo J, Liu C, Wang Y, Yang L, He S. Genome of the butterfly hillstream loach provides insights into adaptations to torrential mountain stream life. Mol Ecol Resour 2021; 21:1922-1935. [PMID: 33893720 DOI: 10.1111/1755-0998.13400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 03/25/2021] [Accepted: 04/13/2021] [Indexed: 11/27/2022]
Abstract
Butterfly hillstream loach (Beaufortia kweichowensis), a benthic fish in the torrential mountain streams, possesses a totally flat ventrum, flattened craniofacial and body skeletons, and enlarged paired fins covered by substantially small keratinous structures. However, little is known about the genetic basis of these specialized morphological adaptations. Here we present a 448.52-Mb genome assembly with contig N50 length of 5.53 Mb by integrating Illumina short-read sequencing, Nanopore long-read sequencing and HiC-based chromatin map. Demographic history reconstruction of the butterfly hillstream loach reveals that the population dynamics is correlated with the different stages of uplifting of the Tibetan Plateau. Comparative genomic analysis finds evidence of six keratin genes in butterfly hillstream loach evolving under positive selection. Within these genes, two keratin genes exhibit species-specific and divergent amino acid changes, suggesting a role in the formation of the unculi. Additionally, a series of positively selected genes, rapid evolving genes, specific variant genes and expanded gene families are found, including genes related to Hedgehog, Notch and BMP pathways, which may be involved in craniofacial development. These findings may have important implications for understanding the genetic basis of phenotypic adaptation to torrential mountain stream life.
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Affiliation(s)
- Yu Deng
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Minghui Meng
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Jian Fang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Haifeng Jiang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Ning Sun
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Wenqi Lv
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Yi Lei
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Cheng Wang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Jing Bo
- University of Chinese Academy of Sciences, Beijing, China.,Institute of Deep Sea Science and Engineering, Chinese Academy of Sciences, Sanya, China
| | - Chun Liu
- BGI Genomics, BGI-Shenzhen, Shenzhen, China
| | - Ying Wang
- Hubei Engineering Research Center for Protection and Utilization of Special Biological Resources in the Hanjiang River Basin, College of Life Sciences, Jianghan University, Wuhan, China
| | - Liandong Yang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Shunping He
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China.,Institute of Deep Sea Science and Engineering, Chinese Academy of Sciences, Sanya, China.,Center for Excellence in Animal Evolution and Genetics, Chinese Academy of Sciences, Kunming, China
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12
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Dai YL, Jiang YF, Lu YA, Yu JB, Kang MC, Jeon YJ. Fucoxanthin-rich fraction from Sargassum fusiformis alleviates particulate matter-induced inflammation in vitro and in vivo. Toxicol Rep 2021; 8:349-358. [PMID: 33665132 PMCID: PMC7898073 DOI: 10.1016/j.toxrep.2021.02.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Revised: 02/01/2021] [Accepted: 02/04/2021] [Indexed: 12/12/2022] Open
Abstract
Particulate matter (PM) contributes to air pollution and primarily originates from unregulated industrial emissions and seasonal natural dust emissions. Fucoxanthin (Fx) is a marine natural pigment from brown macroalgae that has been shown to have various beneficial effects on health. However, the effects of Fx on PM-induced toxicities in cells and animals have not been assessed. In this study, we investigated the anti-inflammatory potential of the Fx-rich fraction (FxRF) of Sargassum fusiformis against PM-mediated inflammatory responses. The FxRF composition was analyzed by rapid-resolution liquid chromatography mass spectrometry. Fx and other main pigments were identified. FxRF attenuated the production of inflammatory components, including prostaglandin E2 (PGE2), cyclooxygenase-2, interleukin (IL)-1β, and IL-6 from PM-exposed HaCaT keratinocytes. PM exposure also reduced the levels of nitric oxide (NO), tumor necrosis factor-α, inducible nitric oxide synthase (iNOS), and PGE2 in PM-exposed RAW264.7 macrophages. Additionally, the culture medium from PM-exposed HaCaT cells induced upregulation of NO, iNOS, PGE2, and pro-inflammatory cytokines in RAW264.7 macrophages. FxRF also significantly decreased the expression levels of factors involved in inflammatory responses, such as NO, reactive oxygen species, and cell death, in PM-exposed zebrafish embryos. These results demonstrated the potential protective effects of FxRF against PM-induced inflammation both in vitro and in a zebrafish model.
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Key Words
- Anti-inflammatory response
- COX, Cyclooxygenase
- DCFH-DA, 2, 7-dichlorofluorescein diacetate
- DMEM, Dulbecco's Modified Eagle's Medium
- Fucoxanthin
- Fx, Fucoxanthin
- FxRF, Fucoxanthin-rich fraction
- H-PM, Culture medium of PM-induced keratinocytes
- IL, Interleukin
- MTT, 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide
- NO, Nitric oxide
- PGE, Prostaglandin E
- PI, Propidium iodide
- PM, Particulate matter
- Particulate matter
- SE, Standard error
- Sargassum fusiformis
- TNF-α, Tumor necrosis factor-α
- iNOS, Inducible nitric oxide synthases
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Affiliation(s)
- Yu-Lin Dai
- Jilin Ginseng Academy, Changchun University of Chinese Medicine, Changchun 130117, China
- Department of Marine Life Science, Jeju National University, Jeju 63243, Republic of Korea
- Postdoctoral Work Station of Jilin Aodong Medicine Group Co., Ltd., Dunhua 133700, China
| | - Yun-Fei Jiang
- Department of Marine Life Science, Jeju National University, Jeju 63243, Republic of Korea
| | - Yu-An Lu
- Department of Marine Life Science, Jeju National University, Jeju 63243, Republic of Korea
| | - Jiang-Bo Yu
- Postdoctoral Work Station of Jilin Aodong Medicine Group Co., Ltd., Dunhua 133700, China
| | - Min-Cheol Kang
- Research Group of Food Processing, Research Division of Strategic Food Technology, Korea Food Research Institute (KFRI), Wanju 55365, Republic of Korea
| | - You-Jin Jeon
- Department of Marine Life Science, Jeju National University, Jeju 63243, Republic of Korea
- Marine Science Institute, Jeju National University, Jeju 63333, Republic of Korea
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13
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Rangel-Huerta E, Guzman A, Maldonado E. The dynamics of epidermal stratification during post-larval development in zebrafish. Dev Dyn 2020; 250:175-190. [PMID: 32877571 DOI: 10.1002/dvdy.249] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 08/08/2020] [Accepted: 08/22/2020] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND The epidermis, as a defensive barrier, is a consistent trait throughout animal evolution. During post-larval development, the zebrafish epidermis thickens by stratification or addition of new cell layers. Epidermal basal stem cells, expressing the transcription factor p63, are known to be involved in this process. Zebrafish post-larval epidermal stratification is a tractable system to study how stem cells participate in organ growth. METHODS We used immunohistochemistry, in combination with EdU cell proliferation detection, to study zebrafish epidermal stratification. For this procedure, we selected a window of post-larval stages (5-8 mm of standard length or SL, which normalizes age by size). Simultaneously, we used markers for asymmetric cell division and the Notch signaling pathway. RESULTS We found that epidermal stratification is the consequence of several events, including changes in cell shape, active cell proliferation and asymmetrical cell divisions. We identified a subset of highly proliferative epidermal cells with reduced levels of p63, which differed from the basal stem cells with high levels of p63. Additionally, we described different mechanisms that participate in the stratification process, including the phosphorylation of p63, asymmetric cell division regulated by the Par3 and LGN proteins, and expression of Notch genes.
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Affiliation(s)
- Emma Rangel-Huerta
- EvoDevo Research Group, Unidad de Sistemas Arrecifales, Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México (UNAM), Puerto Morelos, Quintana Roo, Mexico.,Posgrado en Ciencias Biomédicas, Universidad Nacional Autónoma de México, UNAM, Puerto Morelos, Quintana Roo, Mexico
| | - Aida Guzman
- EvoDevo Research Group, Unidad de Sistemas Arrecifales, Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México (UNAM), Puerto Morelos, Quintana Roo, Mexico.,Estudio Técnico Especializado en Histopatología, Escuela Nacional Preparatoria, ENP, Universidad Nacional Autónoma de México, UNAM, Ciudad de México, Mexico
| | - Ernesto Maldonado
- EvoDevo Research Group, Unidad de Sistemas Arrecifales, Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México (UNAM), Puerto Morelos, Quintana Roo, Mexico
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14
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Multiple epithelia are required to develop teeth deep inside the pharynx. Proc Natl Acad Sci U S A 2020; 117:11503-11512. [PMID: 32398375 DOI: 10.1073/pnas.2000279117] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
To explain the evolutionary origin of vertebrate teeth from odontodes, it has been proposed that competent epithelium spread into the oropharyngeal cavity via the mouth and other possible channels such as the gill slits [Huysseune et al., 2009, J. Anat. 214, 465-476]. Whether tooth formation deep inside the pharynx in extant vertebrates continues to require external epithelia has not been addressed so far. Using zebrafish we have previously demonstrated that cells derived from the periderm penetrate the oropharyngeal cavity via the mouth and via the endodermal pouches and connect to periderm-like cells that subsequently cover the entire endoderm-derived pharyngeal epithelium [Rosa et al., 2019, Sci. Rep. 9, 10082]. We now provide conclusive evidence that the epithelial component of pharyngeal teeth in zebrafish (the enamel organ) is derived from medial endoderm, as hitherto assumed based on position deep in the pharynx. Yet, dental morphogenesis starts only after the corresponding endodermal pouch (pouch 6) has made contact with the skin ectoderm, and only after periderm-like cells have covered the prospective tooth-forming endodermal epithelium. Manipulation of signaling pathways shown to adversely affect tooth development indicates they act downstream of these events. We demonstrate that pouch-ectoderm contact and the presence of a periderm-like layer are both required, but not sufficient, for tooth initiation in the pharynx. We conclude that the earliest interactions to generate pharyngeal teeth encompass those between different epithelial populations (skin ectoderm, endoderm, and periderm-like cells in zebrafish), in addition to the epithelial-mesenchymal interactions that govern the formation of all vertebrate teeth.
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15
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Periderm invasion contributes to epithelial formation in the teleost pharynx. Sci Rep 2019; 9:10082. [PMID: 31300674 PMCID: PMC6626026 DOI: 10.1038/s41598-019-46040-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Accepted: 06/17/2019] [Indexed: 01/20/2023] Open
Abstract
The gnathostome pharyngeal cavity functions in food transport and respiration. In amniotes the mouth and nares are the only channels allowing direct contact between internal and external epithelia. In teleost fish, gill slits arise through opening of endodermal pouches and connect the pharynx to the exterior. Using transgenic zebrafish lines, cell tracing, live imaging and different markers, we investigated if pharyngeal openings enable epithelial invasion and how this modifies the pharyngeal epithelium. We conclude that in zebrafish the pharyngeal endoderm becomes overlain by cells with a peridermal phenotype. In a wave starting from pouch 2, peridermal cells from the outer skin layer invade the successive pouches until halfway their depth. Here the peridermal cells connect to a population of cells inside the pharyngeal cavity that express periderm markers, yet do not invade from outside. The latter population expands along the midline from anterior to posterior until the esophagus-gut boundary. Together, our results show a novel role for the periderm as an internal epithelium becomes adapted to function as an external surface.
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16
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van den Berg MCW, MacCarthy-Morrogh L, Carter D, Morris J, Ribeiro Bravo I, Feng Y, Martin P. Proteolytic and Opportunistic Breaching of the Basement Membrane Zone by Immune Cells during Tumor Initiation. Cell Rep 2019; 27:2837-2846.e4. [PMID: 31167131 PMCID: PMC6581915 DOI: 10.1016/j.celrep.2019.05.029] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 04/02/2019] [Accepted: 05/07/2019] [Indexed: 12/29/2022] Open
Abstract
Cancer-related inflammation impacts significantly on cancer development and progression. From early stages, neutrophils and macrophages are drawn to pre-neoplastic cells in the epidermis, but before directly interacting, they must first breach the underlying extracellular matrix barrier layer that includes the basement membrane. Using several different skin cancer models and a collagen I-GFP transgenic zebrafish line, we have undertaken correlative light and electron microscopy (CLEM) to capture the moments when immune cells traverse the basement membrane. We show evidence both for active proteolytic burrowing and for the opportunistic use of pre-existing weak spots in the matrix layer. We show that these small holes, as well as much larger, cancer cell-generated or wound-triggered gaps in the matrix barrier, provide portals for immune cells to access cancer cells in the epidermis and thus are rate limiting in cancer progression.
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Affiliation(s)
- Maaike C W van den Berg
- School of Physiology, Pharmacology & Neuroscience, Biomedical Sciences Building, University of Bristol, University Walk, Bristol BS8 1TD, UK
| | - Lucy MacCarthy-Morrogh
- School of Biochemistry, Biomedical Sciences Building, University of Bristol, University Walk, Bristol BS8 1TD, UK
| | - Deborah Carter
- School of Biochemistry, Biomedical Sciences Building, University of Bristol, University Walk, Bristol BS8 1TD, UK
| | - Josephine Morris
- School of Biochemistry, Biomedical Sciences Building, University of Bristol, University Walk, Bristol BS8 1TD, UK
| | - Isabel Ribeiro Bravo
- University of Edinburgh Centre for Inflammation Research, Queen's Medical Research Institute, Edinburgh BioQuarter, Edinburgh EH16 4TJ, UK
| | - Yi Feng
- University of Edinburgh Centre for Inflammation Research, Queen's Medical Research Institute, Edinburgh BioQuarter, Edinburgh EH16 4TJ, UK.
| | - Paul Martin
- School of Physiology, Pharmacology & Neuroscience, Biomedical Sciences Building, University of Bristol, University Walk, Bristol BS8 1TD, UK; School of Biochemistry, Biomedical Sciences Building, University of Bristol, University Walk, Bristol BS8 1TD, UK; School of Medicine, Cardiff University, Cardiff CF14 4XN, UK.
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17
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Brock CK, Wallin ST, Ruiz OE, Samms KM, Mandal A, Sumner EA, Eisenhoffer GT. Stem cell proliferation is induced by apoptotic bodies from dying cells during epithelial tissue maintenance. Nat Commun 2019; 10:1044. [PMID: 30837472 PMCID: PMC6400930 DOI: 10.1038/s41467-019-09010-6] [Citation(s) in RCA: 98] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Accepted: 02/13/2019] [Indexed: 12/15/2022] Open
Abstract
Epithelial tissues require the removal and replacement of damaged cells to sustain a functional barrier. Dying cells provide instructive cues that can influence surrounding cells to proliferate, but how these signals are transmitted to their healthy neighbors to control cellular behaviors during tissue homeostasis remains poorly understood. Here we show that dying stem cells facilitate communication with adjacent stem cells by caspase-dependent production of Wnt8a-containing apoptotic bodies to drive cellular turnover in living epithelia. Basal stem cells engulf apoptotic bodies, activate Wnt signaling, and are stimulated to divide to maintain tissue-wide cell numbers. Inhibition of either cell death or Wnt signaling eliminated the apoptosis-induced cell division, while overexpression of Wnt8a signaling combined with induced cell death led to an expansion of the stem cell population. We conclude that ingestion of apoptotic bodies represents a regulatory mechanism linking death and division to maintain overall stem cell numbers and epithelial tissue homeostasis. Damaged epithelial tissues are known to compensate for cell death through compensatory cell divisions to maintain epithelial integrity. Here, the authors show in living epithelia that dying cells stimulate adjacent stem cells to divide through caspase-dependent production of Wnt8a-containing apoptotic bodies.
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Affiliation(s)
- Courtney K Brock
- Department of Genetics, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Stephen T Wallin
- Department of Genetics, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Oscar E Ruiz
- Department of Genetics, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Krystin M Samms
- Department of Genetics, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Amrita Mandal
- Department of Genetics, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Elizabeth A Sumner
- Department of Genetics, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - George T Eisenhoffer
- Department of Genetics, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA. .,Genetics and Epigenetics Graduate Program, The University of Texas Graduate School of Biomedical Sciences at Houston, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA.
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18
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Hu X, Liu J, Sun L, Liu L, Hu Y, Yuan Y, Wu G, Wang Y, Chen J, Xu Y. TAp63 is correlated with chronic inflammation in patients with newly diagnosed type 2 diabetes mellitus. J Diabetes Complications 2018; 32:335-341. [PMID: 29395840 DOI: 10.1016/j.jdiacomp.2017.12.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Revised: 12/11/2017] [Accepted: 12/26/2017] [Indexed: 02/06/2023]
Abstract
AIMS To investigate TAp63 expression in patients with type 2 diabetes mellitus (T2DM) and the potential correlations between TAp63 and proinflammatory cytokines production and other clinical parameters. METHODS Peripheral blood mononuclear cells (PBMCs) and plasma were collected from 72 T2DM (cases) and 72 healthy subjects (controls). Fasting blood glucose (FBG), fasting insulin (FIN) and a blood lipid profile were measured. The homeostasis model assessment (HOMA) was used to estimate insulin resistance (IR). Plasma tumor necrosis factor-α (TNF-α) and interleukin (IL)-6 were determined. PBMCs isolated from healthy subjects were cultured with or without 33.3 mmol/l glucose or 0.5 mmol/l palmitic acid (PA) for 6 h, 24 h, 48 h, and 72 h. The expression of TAp63 at mRNA and protein levels in PBMCs was analyzed using real-time qRT-PCR and western blots, respectively. RESULTS TAp63 expression was significantly lower in T2DM patients compared with that of the controls. In addition, TAp63 expression showed a negative correlation with FBG, FIN, HbA1c, HOMA-IR, FFAs, TNF-α, and IL-6 levels. Treatment with 33.3 mmol/l glucose or 0.5 mmol/l PA increased TAp63 expression in the cultured PBMCs. CONCLUSIONS TAp63 level may be correlated with chronic inflammatory state and perturbed glucose and lipid metabolism in T2DM.
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Affiliation(s)
- Xuemei Hu
- Department of Endocrinology, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, China
| | - Jie Liu
- Department of Endocrinology, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, China
| | - Li Sun
- Department of Endocrinology, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, China
| | - Linjie Liu
- Department of Endocrinology, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, China
| | - Yimeng Hu
- Department of Endocrinology, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, China
| | - Yin Yuan
- Department of Endocrinology, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, China
| | - Guijun Wu
- Department of Endocrinology, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, China
| | - Ye Wang
- Department of Endocrinology, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, China
| | - Jing Chen
- Department of Endocrinology, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, China
| | - Yancheng Xu
- Department of Endocrinology, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, China.
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19
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Negative feedback between TAp63 and Mir-133b mediates colorectal cancer suppression. Oncotarget 2018; 7:87147-87160. [PMID: 27894087 PMCID: PMC5349978 DOI: 10.18632/oncotarget.13515] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Accepted: 10/16/2016] [Indexed: 12/15/2022] Open
Abstract
Background TAp63 is known as the most potent transcription activator and tumor suppressor. microRNAs (miRNAs) are increasingly recognized as essential components of the p63 pathway, mediating downstream post-transcriptional gene repression. The aim of present study was to investigate a negative feedback loop between TAp63 and miR-133b. Results Overexpression of TAp63 inhibited HCT-116 cell proliferation, apoptosis and invasion via miR-133b. Accordingly, miR-133b inhibited TAp63 expression through RhoA and its downstream pathways. Moreover, we demonstrated that TAp63/miR-133b could inhibit colorectal cancer proliferation and metastasis in vivo and vitro. Materials and Methods We evaluated the correlation between TAp63 and miR-133b in HCT-116 cells and investigated the roles of the TAp63/miR-133b feedback loop in cell proliferation, apoptosis and metastasis via MTT, flow cytometry, Transwell, and nude mouse xenograft experiments. The expression of TAp63, miR-133b, RhoA, α-tubulin and Akt was assessed via qRT-PCR, western blot and immunofluorescence analyses. miR-133b target genes were identified through luciferase reporter assays. Conclusions miR-133b plays an important role in the anti-tumor effects of TAp63 in colorectal cancer. miR-133b may represent a tiemolecule between TAp63 and RhoA, forming a TAp63/miR-133b/RhoA negative feedback loop, which could significantly inhibit proliferation, apoptosis and metastasis.
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20
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Jin R, Luo X, Luan K, Liu L, Sun LD, Yang S, Zhang SQ, Zhang XJ. Disorder of the mevalonate pathway inhibits calcium-induced differentiation of keratinocytes. Mol Med Rep 2017; 16:4811-4816. [PMID: 28765912 DOI: 10.3892/mmr.2017.7128] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Accepted: 03/03/2017] [Indexed: 11/06/2022] Open
Abstract
Mutation of genes encoding the enzymes of the mevalonate pathway cause a variety of diseases, including skin disorders. Mutation of four genes in this pathway, including mevalonate kinase, phosphomevalonate kinase, mevalonate diphosphate decarboxylase and farnesyl diphosphate synthase, have demonstrated to be responsible for porokeratosis (PK). However, the pathogenesis of PK remains unclear. In the present study, specific enzyme inhibitors of the mevalonate pathway, including pravastatin (PRA), alendronate (ALD), farnesyl transferase inhibitor (FTI‑277) and geranylgeranyl transferase inhibitor (GGTI‑298), were used to investigate the effect on differentiation of keratinocytes (KCs). Western blotting demonstrated that PRA, ALD, FTI‑277 or GGTI‑298 alone, or in combination, inhibited the expression level of calcium‑induced differentiation maker involucrin (INV) in KCs. ALD and PRA induced greater inhibition of INV compared with FTI‑277 and GGTI‑298 treatment. These inhibitors additionally influenced the expression levels of keratin1. Mechanistic studies revealed that treatment of cells with inhibitors decreased the expression levels of p53 and Notch1, and regulated activation of the mitogen activated protein kinase and phosphoinositide‑3‑kinase/protein kinase B signaling pathways. The results of the present study suggested that regulation of the mevalonate pathway may be necessary for differentiation of KCs, and the pathogenesis of disseminated superficial actinic PK.
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Affiliation(s)
- Rui Jin
- Department of Biochemistry and Molecular Biology, Anhui Medical University, Hefei, Anhui 230022, P.R. China
| | - Xin Luo
- Department of Biochemistry and Molecular Biology, Anhui Medical University, Hefei, Anhui 230022, P.R. China
| | - Kang Luan
- Department of Biochemistry and Molecular Biology, Anhui Medical University, Hefei, Anhui 230022, P.R. China
| | - Li Liu
- Department of Biochemistry and Molecular Biology, Anhui Medical University, Hefei, Anhui 230022, P.R. China
| | - Liang-Dan Sun
- Department of Dermatology, Institute of Dermatology, No. 1 Hospital, Anhui Medical University, Hefei, Anhui 230022, P.R. China
| | - Sen Yang
- Department of Dermatology, Institute of Dermatology, No. 1 Hospital, Anhui Medical University, Hefei, Anhui 230022, P.R. China
| | - Sheng-Quan Zhang
- Department of Biochemistry and Molecular Biology, Anhui Medical University, Hefei, Anhui 230022, P.R. China
| | - Xue-Jun Zhang
- Department of Dermatology, Institute of Dermatology, No. 1 Hospital, Anhui Medical University, Hefei, Anhui 230022, P.R. China
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21
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Kuri P, Schieber NL, Thumberger T, Wittbrodt J, Schwab Y, Leptin M. Dynamics of in vivo ASC speck formation. J Cell Biol 2017; 216:2891-2909. [PMID: 28701426 PMCID: PMC5584180 DOI: 10.1083/jcb.201703103] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Revised: 05/31/2017] [Accepted: 06/13/2017] [Indexed: 12/18/2022] Open
Abstract
The inflammasome adaptor ASC forms enormous intracellular complexes called specks. Live imaging of endogenous ASC in keratinocytes reveals speck formation dynamics and their lethal effects, as well as macrophages’ engulfment and digestion of the specks left behind by dead cells. Activated danger or pathogen sensors trigger assembly of the inflammasome adaptor ASC into specks, large signaling platforms considered hallmarks of inflammasome activation. Because a lack of in vivo tools has prevented the study of endogenous ASC dynamics, we generated a live ASC reporter through CRISPR/Cas9 tagging of the endogenous gene in zebrafish. We see strong ASC expression in the skin and other epithelia that act as barriers to insult. A toxic stimulus triggered speck formation and rapid pyroptosis in keratinocytes in vivo. Macrophages engulfed and digested that speck-containing, pyroptotic debris. A three-dimensional, ultrastructural reconstruction, based on correlative light and electron microscopy of the in vivo assembled specks revealed a compact network of highly intercrossed filaments, whereas pyrin domain (PYD) or caspase activation and recruitment domain alone formed filamentous aggregates. The effector caspase is recruited through PYD, whose overexpression induced pyroptosis but only after substantial delay. Therefore, formation of a single, compact speck and rapid cell-death induction in vivo requires a full-length ASC.
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Affiliation(s)
- Paola Kuri
- Directors' Research Unit, European Molecular Biology Laboratory, Heidelberg, Germany
| | - Nicole L Schieber
- Cell Biology and Biophysics Unit, European Molecular Biology Laboratory, Heidelberg, Germany
| | - Thomas Thumberger
- Centre for Organismal Studies, Heidelberg University, Heidelberg, Germany
| | - Joachim Wittbrodt
- Centre for Organismal Studies, Heidelberg University, Heidelberg, Germany
| | - Yannick Schwab
- Cell Biology and Biophysics Unit, European Molecular Biology Laboratory, Heidelberg, Germany.,Electron Microscopy Core Facility, European Molecular Biology Laboratory, Heidelberg, Germany
| | - Maria Leptin
- Directors' Research Unit, European Molecular Biology Laboratory, Heidelberg, Germany .,Institute of Genetics, University of Cologne, Cologne, Germany.,European Molecular Biology Organization, Heidelberg, Germany
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Rodriguez Cruz SI, Phillips MA, Kültz D, Rice RH. Tgm1-like transglutaminases in tilapia (Oreochromis mossambicus). PLoS One 2017; 12:e0177016. [PMID: 28472103 PMCID: PMC5417640 DOI: 10.1371/journal.pone.0177016] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Accepted: 04/20/2017] [Indexed: 12/22/2022] Open
Abstract
Among the adaptations of aquatic species during evolution of terrestrial tetrapods was the development of an epidermis preventing desiccation. In present day mammals, keratinocytes of the epidermis, using a membrane-bound transglutaminase (Tgm1), accomplish this function by synthesizing a scaffold of cross-linked protein to which a lipid envelope is attached. This study characterizes the abilities of two homologous transglutaminase isozymes in the teleost fish tilapia to form cross-linked protein structures and their expression in certain tissues. Results indicate they are capable of membrane localization and of generating cellular structures resistant to detergent solubilization. They are both expressed in epithelial cells of the lip, buccal cavity and tips of gill filaments. Adaptation of transglutaminase use in evolution of terrestrial keratinocytes evidently involved refinements in tissue expression, access to suitable substrate proteins and activation of cross-linking during terminal differentiation.
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Affiliation(s)
| | - Marjorie A. Phillips
- Department of Environmental Toxicology, University of California, Davis, California, United States of America
| | - Dietmar Kültz
- Department of Animal Science, University of California, Davis, California, United States of America
| | - Robert H. Rice
- Forensic Science Program, University of California, Davis, California, United States of America
- Department of Environmental Toxicology, University of California, Davis, California, United States of America
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Kuri P, Ellwanger K, Kufer TA, Leptin M, Bajoghli B. A high-sensitivity bi-directional reporter to monitor NF-κB activity in cell culture and zebrafish in real time. J Cell Sci 2016; 130:648-657. [PMID: 27980067 DOI: 10.1242/jcs.196485] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 12/08/2016] [Indexed: 12/12/2022] Open
Abstract
Nuclear factor (NF)-κB transcription factors play major roles in numerous biological processes including development and immunity. Here, we engineered a novel bi-directional NF-κB-responsive reporter, pSGNluc, in which a high-affinity NF-κB promoter fragment simultaneously drives expression of luciferase and GFP. Treatment with TNFα (also known as TNF) induced a strong, dose-dependent luciferase signal in cell culture. The degree of induction over background was comparable to that of other NF-κB-driven luciferase reporters, but the absolute level of expression was at least 20-fold higher. This extends the sensitivity range of otherwise difficult assays mediated exclusively by endogenously expressed receptors, as we show for Nod1 signaling in HEK293 cells. To measure NF-κB activity in the living organism, we established a transgenic zebrafish line carrying the pSGNluc construct. Live in toto imaging of transgenic embryos revealed the activation patterns of NF-κB signaling during embryonic development and as responses to inflammatory stimuli. Taken together, by integrating qualitative and quantitative NF-κB reporter activity, pSGNluc is a valuable tool for studying NF-κB signaling at high spatiotemporal resolution in cultured cells and living animals that goes beyond the possibilities provided by currently available reporters.
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Affiliation(s)
- Paola Kuri
- Directors' Research Unit, European Molecular Biology Laboratory (EMBL), Meyerhofstrasse 1, 69117 Heidelberg, Germany
| | - Kornelia Ellwanger
- Department of Immunology, Institute of Nutritional Medicine, University of Hohenheim, 70593 Stuttgart, Germany
| | - Thomas A Kufer
- Department of Immunology, Institute of Nutritional Medicine, University of Hohenheim, 70593 Stuttgart, Germany
| | - Maria Leptin
- Directors' Research Unit, European Molecular Biology Laboratory (EMBL), Meyerhofstrasse 1, 69117 Heidelberg, Germany .,Institute of Genetics, University of Cologne, Zülpicherstrasse 47a, 50674 Cologne, Germany.,EMBO, Meyerhofstrasse 1, 69117 Heidelberg, Germany
| | - Baubak Bajoghli
- Directors' Research Unit, European Molecular Biology Laboratory (EMBL), Meyerhofstrasse 1, 69117 Heidelberg, Germany
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24
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Richardson R, Metzger M, Knyphausen P, Ramezani T, Slanchev K, Kraus C, Schmelzer E, Hammerschmidt M. Re-epithelialization of cutaneous wounds in adult zebrafish combines mechanisms of wound closure in embryonic and adult mammals. Development 2016; 143:2077-88. [PMID: 27122176 DOI: 10.1242/dev.130492] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Accepted: 04/12/2016] [Indexed: 01/08/2023]
Abstract
Re-epithelialization of cutaneous wounds in adult mammals takes days to complete and relies on numerous signalling cues and multiple overlapping cellular processes that take place both within the epidermis and in other participating tissues. Re-epithelialization of partial- or full-thickness skin wounds of adult zebrafish, however, is extremely rapid and largely independent of the other processes of wound healing. Live imaging after treatment with transgene-encoded or chemical inhibitors reveals that re-epithelializing keratinocytes repopulate wounds by TGF-β- and integrin-dependent lamellipodial crawling at the leading edges of the epidermal tongue. In addition, re-epithelialization requires long-range epithelial rearrangements, involving radial intercalations, flattening and directed elongation of cells - processes that are dependent on Rho kinase, JNK and, to some extent, planar cell polarity within the epidermis. These rearrangements lead to a massive recruitment of keratinocytes from the adjacent epidermis and make re-epithelialization independent of keratinocyte proliferation and the mitogenic effect of FGF signalling, which are only required after wound closure, allowing the epidermis outside the wound to re-establish its normal thickness. Together, these results demonstrate that the adult zebrafish is a valuable in vivo model for studying and visualizing the processes involved in cutaneous wound closure, facilitating the dissection of direct from indirect and motogenic from mitogenic effects of genes and molecules affecting wound re-epithelialization.
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Affiliation(s)
- Rebecca Richardson
- Institute of Developmental Biology, University of Cologne, Cologne D-50674, Germany
| | - Manuel Metzger
- Institute of Developmental Biology, University of Cologne, Cologne D-50674, Germany
| | - Philipp Knyphausen
- Institute of Developmental Biology, University of Cologne, Cologne D-50674, Germany Graduate School for Biological Sciences, University of Cologne, Cologne D-50674, Germany
| | - Thomas Ramezani
- Institute of Developmental Biology, University of Cologne, Cologne D-50674, Germany
| | - Krasimir Slanchev
- Georges-Koehler Laboratory, Max-Planck Institute of Immunobiology and Epigenetics, Freiburg D-79108, Germany
| | - Christopher Kraus
- Institute of Developmental Biology, University of Cologne, Cologne D-50674, Germany
| | - Elmon Schmelzer
- Cell Biology, Max-Planck Institute for Plant Breeding Research, Cologne D-50829, Germany
| | - Matthias Hammerschmidt
- Institute of Developmental Biology, University of Cologne, Cologne D-50674, Germany Center for Molecular Medicine Cologne, University of Cologne, Cologne D-50931, Germany Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases, University of Cologne, Cologne D-50931, Germany
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25
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Jeradi S, Hammerschmidt M. Retinoic acid-induced premature osteoblast-to-preosteocyte transitioning has multiple effects on calvarial development. Development 2016; 143:1205-16. [PMID: 26903503 DOI: 10.1242/dev.129189] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Accepted: 02/17/2016] [Indexed: 12/25/2022]
Abstract
We have previously shown that, in human and zebrafish, hypomorphic mutations of the gene encoding the retinoic acid (RA)-metabolizing enzyme Cyp26b1 result in coronal craniosynostosis, caused by an RA-induced premature transitioning of suture osteoblasts to preosteocytes, inducing ectopic mineralization of the suture's osteoid matrix. In addition, we showed that human CYP26B1 null patients have more severe and seemingly opposite skull defects, characterized by smaller and fragmented calvaria, but the cellular basis of these defects remained largely unclear. Here, by treating juvenile zebrafish with exogenous RA or a chemical Cyp26 inhibitor in the presence or absence of osteogenic cells or bone-resorbing osteoclasts, we demonstrate that both reduced calvarial size and calvarial fragmentation are also caused by RA-induced premature osteoblast-to-preosteocyte transitioning. During calvarial growth, the resulting osteoblast deprival leads to decreased osteoid production and thereby smaller and thinner calvaria, whereas calvarial fragmentation is caused by increased osteoclast stimulation through the gained preosteocytes. Together, our data demonstrate that RA-induced osteoblast-to-preosteocyte transitioning has multiple effects on developing bone in Cyp26b1 mutants, ranging from gain to loss of bone, depending on the allelic strength, the developmental stage and the cellular context.
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Affiliation(s)
- Shirine Jeradi
- Institute of Developmental Biology, University of Cologne, 50674 Cologne, Germany
| | - Matthias Hammerschmidt
- Institute of Developmental Biology, University of Cologne, 50674 Cologne, Germany Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50931 Cologne, Germany Center for Molecular Medicine Cologne (CMMC), University of Cologne, 50931 Cologne, Germany
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26
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BOLKENT Ş, ÖZTAY F, GEZGİNCİ OKTAYOĞLU S, SANCAR BAŞ S, KARATUĞ A. A matter of regeneration and repair: caspases as the key molecules. Turk J Biol 2016. [DOI: 10.3906/biy-1507-18] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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Koh LF, Ng BK, Bertrand J, Thierry F. Transcriptional control of late differentiation in human keratinocytes by TAp63 and Notch. Exp Dermatol 2015; 24:754-60. [PMID: 26013684 DOI: 10.1111/exd.12764] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/14/2015] [Indexed: 12/13/2022]
Abstract
We previously showed that in cervical carcinoma cells, the TAp63β isoform of the p63 transcription factor is negatively interfering with the carcinogenic pathways promoting anchorage-independent growth. In this study, we have defined the mechanisms underlying the effects of TAp63β through a transcriptome analysis of human keratinocytes overexpressing this protein. TAp63β modulated expression of 1203 genes (944 activated and 259 repressed; P-value <0.05), notably genes involved in epithelial development and keratinocyte differentiation. In comparison, while TAp63γ acts similarly to TAp63β to transactivate a selected panel of target genes, other p63 isoforms, including ΔNp63α, which is highly expressed in keratinocytes, are inactive. Upon induction of differentiation of primary human keratinocytes, we observed endogenous expression of TAp63β and γ isoforms, along with transcriptional activation of selected target genes. Intriguingly, our data also indicated that TAp63β activates transcription of members of the Notch pathway, which is known to promote keratinocyte differentiation. By inhibiting and activating the Notch pathway, we revealed a subset of TAp63β-activated genes that were co-dependent on Notch for their expression. Our work demonstrates that the shorter TAp63 isoforms (TAp63β/γ) are specifically induced in human keratinocytes and cooperate with Notch signalling to activate transcription of late differentiation genes supporting their role as putative tumor suppressors in HPV-associated tumorigenesis.
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Affiliation(s)
- Li Fang Koh
- Papillomavirus Regulation and Cancer Laboratory, Institute of Medical Biology, Biopolis, Singapore City, Singapore
| | - Boon Kiat Ng
- Papillomavirus Regulation and Cancer Laboratory, Institute of Medical Biology, Biopolis, Singapore City, Singapore
| | - Juliette Bertrand
- Papillomavirus Regulation and Cancer Laboratory, Institute of Medical Biology, Biopolis, Singapore City, Singapore
| | - Françoise Thierry
- Papillomavirus Regulation and Cancer Laboratory, Institute of Medical Biology, Biopolis, Singapore City, Singapore
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28
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Westcot SE, Hatzold J, Urban MD, Richetti SK, Skuster KJ, Harm RM, Lopez Cervera R, Umemoto N, McNulty MS, Clark KJ, Hammerschmidt M, Ekker SC. Protein-Trap Insertional Mutagenesis Uncovers New Genes Involved in Zebrafish Skin Development, Including a Neuregulin 2a-Based ErbB Signaling Pathway Required during Median Fin Fold Morphogenesis. PLoS One 2015; 10:e0130688. [PMID: 26110643 PMCID: PMC4482254 DOI: 10.1371/journal.pone.0130688] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Accepted: 05/24/2015] [Indexed: 01/13/2023] Open
Abstract
Skin disorders are widespread, but available treatments are limited. A more comprehensive understanding of skin development mechanisms will drive identification of new treatment targets and modalities. Here we report the Zebrafish Integument Project (ZIP), an expression-driven platform for identifying new skin genes and phenotypes in the vertebrate model Danio rerio (zebrafish). In vivo selection for skin-specific expression of gene-break transposon (GBT) mutant lines identified eleven new, revertible GBT alleles of genes involved in skin development. Eight genes—fras1, grip1, hmcn1, msxc, col4a4, ahnak, capn12, and nrg2a—had been described in an integumentary context to varying degrees, while arhgef25b, fkbp10b, and megf6a emerged as novel skin genes. Embryos homozygous for a GBT insertion within neuregulin 2a (nrg2a) revealed a novel requirement for a Neuregulin 2a (Nrg2a) – ErbB2/3 – AKT signaling pathway governing the apicobasal organization of a subset of epidermal cells during median fin fold (MFF) morphogenesis. In nrg2a mutant larvae, the basal keratinocytes within the apical MFF, known as ridge cells, displayed reduced pAKT levels as well as reduced apical domains and exaggerated basolateral domains. Those defects compromised proper ridge cell elongation into a flattened epithelial morphology, resulting in thickened MFF edges. Pharmacological inhibition verified that Nrg2a signals through the ErbB receptor tyrosine kinase network. Moreover, knockdown of the epithelial polarity regulator and tumor suppressor lgl2 ameliorated the nrg2a mutant phenotype. Identifying Lgl2 as an antagonist of Nrg2a – ErbB signaling revealed a significantly earlier role for Lgl2 during epidermal morphogenesis than has been described to date. Furthermore, our findings demonstrated that successive, coordinated ridge cell shape changes drive apical MFF development, making MFF ridge cells a valuable model for investigating how the coordinated regulation of cell polarity and cell shape changes serves as a crucial mechanism of epithelial morphogenesis.
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Affiliation(s)
- Stephanie E. Westcot
- Department of Genetics, Cell Biology, and Development, University of Minnesota, Minneapolis, Minnesota, United States of America
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, Minnesota, United States of America
| | - Julia Hatzold
- Institute for Developmental Biology, University of Cologne, Biocenter, Cologne, Germany
- Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany
| | - Mark D. Urban
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, Minnesota, United States of America
| | - Stefânia K. Richetti
- Institute for Developmental Biology, University of Cologne, Biocenter, Cologne, Germany
| | - Kimberly J. Skuster
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, Minnesota, United States of America
| | - Rhianna M. Harm
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, Minnesota, United States of America
| | - Roberto Lopez Cervera
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, Minnesota, United States of America
| | - Noriko Umemoto
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, Minnesota, United States of America
| | - Melissa S. McNulty
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, Minnesota, United States of America
| | - Karl J. Clark
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, Minnesota, United States of America
| | - Matthias Hammerschmidt
- Institute for Developmental Biology, University of Cologne, Biocenter, Cologne, Germany
- Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany
- Cologne Cluster of Excellence in Cellular Stress Responses in Aging-associated Diseases (CECAD), University of Cologne, Cologne, Germany
| | - Stephen C. Ekker
- Department of Genetics, Cell Biology, and Development, University of Minnesota, Minneapolis, Minnesota, United States of America
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, Minnesota, United States of America
- * E-mail:
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29
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Genome-wide meta-analysis identifies multiple novel associations and ethnic heterogeneity of psoriasis susceptibility. Nat Commun 2015; 6:6916. [PMID: 25903422 PMCID: PMC4423213 DOI: 10.1038/ncomms7916] [Citation(s) in RCA: 135] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Accepted: 03/13/2015] [Indexed: 02/08/2023] Open
Abstract
Psoriasis is a common inflammatory skin disease with complex genetics and different degrees of prevalence across ethnic populations. Here we present the largest trans-ethnic genome-wide meta-analysis (GWMA) of psoriasis in 15,369 cases and 19,517 controls of Caucasian and Chinese ancestries. We identify four novel associations at LOC144817, COG6, RUNX1 and TP63, as well as three novel secondary associations within IFIH1 and IL12B. Fine-mapping analysis of MHC region demonstrates an important role for all three HLA class I genes and a complex and heterogeneous pattern of HLA associations between Caucasian and Chinese populations. Further, trans-ethnic comparison suggests population-specific effect or allelic heterogeneity for 11 loci. These population-specific effects contribute significantly to the ethnic diversity of psoriasis prevalence. This study not only provides novel biological insights into the involvement of immune and keratinocyte development mechanism, but also demonstrates a complex and heterogeneous genetic architecture of psoriasis susceptibility across ethnic populations. Psoriasis is a common inflammatory skin disease with complex genetics and different degrees of prevalence across ethnic populations. Here Yin et al. conduct a large trans-ethnic genome-wide meta-analysis and identify novel loci that contribute to population-specific susceptibility.
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30
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Kouwenhoven EN, van Bokhoven H, Zhou H. Gene regulatory mechanisms orchestrated by p63 in epithelial development and related disorders. BIOCHIMICA ET BIOPHYSICA ACTA-GENE REGULATORY MECHANISMS 2015; 1849:590-600. [PMID: 25797018 DOI: 10.1016/j.bbagrm.2015.03.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2014] [Revised: 03/09/2015] [Accepted: 03/12/2015] [Indexed: 01/30/2023]
Abstract
The transcription factor p63 belongs to the p53 family and is a key regulator in epithelial commitment and development. Mutations in p63 give rise to several epithelial related disorders with defects in skin, limb and orofacial structures. Since the discovery of p63, efforts have been made to identify its target genes using individual gene approaches and to understand p63 function in normal epithelial development and related diseases. Recent genome-wide approaches have identified tens of thousands of potential p63-regulated target genes and regulatory elements, and reshaped the concept of gene regulation orchestrated by p63. These data also provide insights into p63-related disease mechanisms. In this review, we discuss the regulatory role of p63 in normal and diseased epithelial development in light of these novel findings. We also propose future perspectives for dissecting the molecular mechanism of p63-mediated epithelial development and related disorders as well as for potential therapeutic strategies.
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Affiliation(s)
- Evelyn N Kouwenhoven
- Radboud University, Department of Molecular Developmental Biology, Faculty of Science, Radboud Institute for Molecular Life Sciences, Nijmegen, The Netherlands.
| | - Hans van Bokhoven
- Radboud university medical center, Department of Human Genetics, Radboud Institute for Molecular Life Sciences, Nijmegen, The Netherlands.
| | - Huiqing Zhou
- Radboud University, Department of Molecular Developmental Biology, Faculty of Science, Radboud Institute for Molecular Life Sciences, Nijmegen, The Netherlands; Radboud university medical center, Department of Human Genetics, Radboud Institute for Molecular Life Sciences, Nijmegen, The Netherlands.
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31
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Samuelov L, Sprecher E, Paus R. The role of P-cadherin in skin biology and skin pathology: lessons from the hair follicle. Cell Tissue Res 2015; 360:761-71. [PMID: 25707507 DOI: 10.1007/s00441-015-2114-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Accepted: 12/18/2014] [Indexed: 12/21/2022]
Abstract
Adherens junctions (AJs) are one of the major intercellular junctions in various epithelia including the epidermis and the follicular epithelium. AJs connect the cell surface to the actin cytoskeleton and comprise classic transmembrane cadherins, such as P-cadherin, armadillo family proteins, and actin microfilaments. Loss-of-function mutations in CDH3, which encodes P-cadherin, result in two allelic autosomal recessive disorders: hypotrichosis with juvenile macular dystrophy (HJMD) and ectodermal dysplasia, ectrodactyly, and macular dystrophy (EEM) syndromes. Both syndromes feature sparse hair heralding progressive macular dystrophy. EEM syndrome is characterized in addition by ectodermal and limb defects. Recent studies have demonstrated that, together with its involvement in cell-cell adhesion, P-cadherin plays a crucial role in regulating cell signaling, malignant transformation, and other major intercellular processes. Here, we review the roles of P-cadherin in skin and hair biology, with emphasize on human hair growth, cycling and pigmentation.
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Affiliation(s)
- Liat Samuelov
- Department of Dermatology, Tel Aviv Sourasky Medical Center, 6 Weizmann Street, Tel Aviv, 64239, Israel,
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32
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McMillan SC, Géraudie J, Akimenko MA. Pectoral fin breeding tubercle clusters: a method to determine zebrafish sex. Zebrafish 2014; 12:121-3. [PMID: 25548979 DOI: 10.1089/zeb.2014.1060] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Stephanie C McMillan
- 1 Department of Cellular and Molecular Medicine, University of Ottawa , Ottawa, Canada
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