1
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Armistead J, Höpfl S, Goldhausen P, Müller-Hartmann A, Fahle E, Hatzold J, Franzen R, Brodesser S, Radde NE, Hammerschmidt M. A sphingolipid rheostat controls apoptosis versus apical cell extrusion as alternative tumour-suppressive mechanisms. Cell Death Dis 2024; 15:746. [PMID: 39397024 PMCID: PMC11471799 DOI: 10.1038/s41419-024-07134-2] [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: 05/07/2024] [Revised: 10/02/2024] [Accepted: 10/04/2024] [Indexed: 10/15/2024]
Abstract
Evasion of cell death is a hallmark of cancer, and consequently the induction of cell death is a common strategy in cancer treatment. However, the molecular mechanisms regulating different types of cell death are poorly understood. We have formerly shown that in the epidermis of hypomorphic zebrafish hai1a mutant embryos, pre-neoplastic transformations of keratinocytes caused by unrestrained activity of the type II transmembrane serine protease Matriptase-1 heal spontaneously. This healing is driven by Matriptase-dependent increased sphingosine kinase (SphK) activity and sphingosine-1-phosphate (S1P)-mediated keratinocyte loss via apical cell extrusion. In contrast, amorphic hai1afr26 mutants with even higher Matriptase-1 and SphK activity die within a few days. Here we show that this lethality is not due to epidermal carcinogenesis, but to aberrant tp53-independent apoptosis of keratinocytes caused by increased levels of pro-apoptotic C16 ceramides, sphingolipid counterparts to S1P within the sphingolipid rheostat, which severely compromises the epidermal barrier. Mathematical modelling of sphingolipid rheostat homeostasis, combined with in vivo manipulations of components of the rheostat or the ceramide de novo synthesis pathway, indicate that this unexpected overproduction of ceramides is caused by a negative feedback loop sensing ceramide levels and controlling ceramide replenishment via de novo synthesis. Therefore, despite their initial decrease due to increased conversion to S1P, ceramides eventually reach cell death-inducing levels, making transformed pre-neoplastic keratinocytes die even before they are extruded, thereby abrogating the normally barrier-preserving mode of apical live cell extrusion. Our results offer an in vivo perspective of the dynamics of sphingolipid homeostasis and its relevance for epithelial cell survival versus cell death, linking apical cell extrusion and apoptosis. Implications for human carcinomas and their treatments are discussed.
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Affiliation(s)
- Joy Armistead
- Institute of Zoology / Developmental Biology, University of Cologne, Cologne, Germany.
- Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany.
| | - Sebastian Höpfl
- Institute for Stochastics and Applications, University of Stuttgart, Stuttgart, Germany
| | - Pierre Goldhausen
- Institute of Zoology / Developmental Biology, University of Cologne, Cologne, Germany
| | | | - Evelin Fahle
- Institute of Zoology / Developmental Biology, University of Cologne, Cologne, Germany
| | - Julia Hatzold
- Institute of Zoology / Developmental Biology, University of Cologne, Cologne, Germany
| | - Rainer Franzen
- Max-Planck Institute for Plant Breeding Research, Cologne, Germany
| | - Susanne Brodesser
- Lipidomics/Metabolomics Facility, Cluster of Excellence Cellular Stress Responses in Aging-associated Diseases (CECAD), University of Cologne, Cologne, Germany
| | - Nicole E Radde
- Institute for Stochastics and Applications, University of Stuttgart, Stuttgart, Germany
| | - Matthias Hammerschmidt
- Institute of Zoology / Developmental Biology, University of Cologne, Cologne, Germany.
- Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany.
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2
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Mi J, Ren L, Andersson O. Leveraging zebrafish to investigate pancreatic development, regeneration, and diabetes. Trends Mol Med 2024; 30:932-949. [PMID: 38825440 DOI: 10.1016/j.molmed.2024.05.002] [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: 01/31/2024] [Revised: 04/30/2024] [Accepted: 05/01/2024] [Indexed: 06/04/2024]
Abstract
The zebrafish has become an outstanding model for studying organ development and tissue regeneration, which is prominently leveraged for studies of pancreatic development, insulin-producing β-cells, and diabetes. Although studied for more than two decades, many aspects remain elusive and it has only recently been possible to investigate these due to technical advances in transcriptomics, chemical-genetics, genome editing, drug screening, and in vivo imaging. Here, we review recent findings on zebrafish pancreas development, β-cell regeneration, and how zebrafish can be used to provide novel insights into gene functions, disease mechanisms, and therapeutic targets in diabetes, inspiring further use of zebrafish for the development of novel therapies for diabetes.
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Affiliation(s)
- Jiarui Mi
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden; Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, China.
| | - Lipeng Ren
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden; Department of Medical Cell Biology, Uppsala University, Biomedical Centre, Uppsala, Sweden
| | - Olov Andersson
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden; Department of Medical Cell Biology, Uppsala University, Biomedical Centre, Uppsala, Sweden.
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3
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Deng Y, He Y, Xu J, He H, Zhang M, Li G. Cardiac Fibroblasts regulate myocardium and coronary vasculature development via the collagen signaling pathway. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.09.11.612512. [PMID: 39314489 PMCID: PMC11418987 DOI: 10.1101/2024.09.11.612512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/25/2024]
Abstract
The fibroblast (FB), cardiomyocyte (CM), and vascular endothelial cell (Vas_EC) are the three major cell types in the heart, yet their relationships during development are largely unexplored. To address this gap, we employed RNA staining of the FB marker gene Col1a1 together with the CM marker gene Actn2 and the Vas_EC marker gene Cdh5 at different stages. This approach enabled us to discern the anatomical pattern of cardiac FBs and identify approximately one EC and four CMs directly interacting with each FB. Molecularly, through the analysis of single-cell mRNA sequencing (scRNA-seq) data, we unveiled collagen as the top signaling molecule derived from FBs influencing CM and Vas_EC development. Subsequently, we used a Pdgfra-CreER controlled diphtheria toxin A (DTA) system to ablate the FBs at different stages. We found that the ablation of FBs disrupted myocardium and vasculature development and led to embryonic heart defects. Using scRNA-seq, we further profiled the ablated hearts and identified molecular defects in their ventricular CMs and Vas_ECs compared to control hearts. Moreover, we identified a reduction of collagen in the ablated hearts and predicted collagen as the major signaling pathway regulating the differentially expressed genes in the ablated ventricular CMs. Finally, we performed both short-term and long-term fibroblast ablation at the neonatal stage. We found that short-term ablation caused a reduction in collagen and Vas_EC density, while long-term ablation may induce compensatory collagen expression without causing heart function reduction. In summary, our study has identified the function of fibroblasts in regulating myocardium and vasculature development and implicated an important role for the collagen pathway in this process.
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Affiliation(s)
- Yiting Deng
- Department of Cell Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15201, USA
| | - Yuanhang He
- Tsinghua University, Tsinghua medicine, School of Medicine, Beijing, China
- Department of Cell Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15201, USA
| | - Juan Xu
- Department of Cell Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15201, USA
| | - Haoting He
- Department of Cell Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15201, USA
| | - Manling Zhang
- Vascular Medicine Institute, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Guang Li
- Department of Cell Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15201, USA
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4
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Elsaid R, Mikdache A, Diabangouaya P, Gros G, Hernández PP. A noninvasive photoactivatable split-Cre recombinase system for genome engineering in zebrafish. iScience 2024; 27:110476. [PMID: 39129833 PMCID: PMC11315165 DOI: 10.1016/j.isci.2024.110476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 06/28/2024] [Accepted: 07/05/2024] [Indexed: 08/13/2024] Open
Abstract
The cyclic recombinase (Cre)/loxP recombination system is a powerful technique for in vivo cell labeling and tracking. However, achieving high spatiotemporal precision in cell tracking using this system is challenging due to the requirement for reliable tissue-specific promoters. In contrast, light-inducible systems offer superior regional confinement, tunability, and non-invasiveness compared to conventional lineage-tracing methods. Here, we took advantage of the unique strengths of the zebrafish to develop an easy-to-use highly efficient, genetically encoded, magnets-based, light-inducible transgenic Cre/loxP system. We demonstrate that our system does not exhibit phototoxicity or leakiness in the dark, and it enables efficient and robust Cre/loxP recombination in various tissues and cell types at different developmental stages through noninvasive illumination with blue light. Our newly developed tool is expected to open novel opportunities for light-controlled tracking of cell fate and migration in vivo.
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Affiliation(s)
- Ramy Elsaid
- Institut Curie, PSL Research University CNRS UMR 3215, INSERM U934, 26 Rue d’Ulm, 75248 Paris Cedex 05, France
| | - Aya Mikdache
- Institut Curie, PSL Research University CNRS UMR 3215, INSERM U934, 26 Rue d’Ulm, 75248 Paris Cedex 05, France
| | - Patricia Diabangouaya
- Institut Curie, PSL Research University CNRS UMR 3215, INSERM U934, 26 Rue d’Ulm, 75248 Paris Cedex 05, France
| | - Gwendoline Gros
- Institut Curie, PSL Research University CNRS UMR 3215, INSERM U934, 26 Rue d’Ulm, 75248 Paris Cedex 05, France
| | - Pedro P. Hernández
- Institut Curie, PSL Research University CNRS UMR 3215, INSERM U934, 26 Rue d’Ulm, 75248 Paris Cedex 05, France
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5
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Sande-Melon M, Bergemann D, Fernández-Lajarín M, González-Rosa JM, Cox AG. Development of a hepatic cryoinjury model to study liver regeneration. Development 2024; 151:dev203124. [PMID: 38975841 PMCID: PMC11318111 DOI: 10.1242/dev.203124] [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: 05/29/2024] [Accepted: 06/20/2024] [Indexed: 07/09/2024]
Abstract
The liver is a remarkable organ that can regenerate in response to injury. Depending on the extent of injury, the liver can undergo compensatory hyperplasia or fibrosis. Despite decades of research, the molecular mechanisms underlying these processes are poorly understood. Here, we developed a new model to study liver regeneration based on cryoinjury. To visualise liver regeneration at cellular resolution, we adapted the CUBIC tissue-clearing approach. Hepatic cryoinjury induced a localised necrotic and apoptotic lesion characterised by inflammation and infiltration of innate immune cells. After this initial phase, we observed fibrosis, which resolved as regeneration re-established homeostasis in 30 days. Importantly, this approach enables the comparison of healthy and injured parenchyma within an individual animal, providing unique advantages to previous models. In summary, the hepatic cryoinjury model provides a fast and reproducible method for studying the cellular and molecular pathways underpinning fibrosis and liver regeneration.
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Affiliation(s)
- Marcos Sande-Melon
- Peter MacCallum Cancer Centre, Melbourne, Victoria 3000, Australia
- The Sir Peter MacCallum Department of Oncology, The University of Melbourne, Melbourne, Victoria 3000, Australia
| | - David Bergemann
- Cardiovascular Research Centre, Massachusetts General Hospital Research Institute, Charlestown Navy Yard Campus, 149, 13th Street, MA 02129, USA
- Harvard Medical School, Boston, MA 02115, USA
| | - Miriam Fernández-Lajarín
- Cardiovascular Research Centre, Massachusetts General Hospital Research Institute, Charlestown Navy Yard Campus, 149, 13th Street, MA 02129, USA
- Harvard Medical School, Boston, MA 02115, USA
- Biology Department, Morrissey College of Arts and Sciences, Boston College, Chestnut Hill, MA 02467, USA
| | - Juan Manuel González-Rosa
- Cardiovascular Research Centre, Massachusetts General Hospital Research Institute, Charlestown Navy Yard Campus, 149, 13th Street, MA 02129, USA
- Harvard Medical School, Boston, MA 02115, USA
- Biology Department, Morrissey College of Arts and Sciences, Boston College, Chestnut Hill, MA 02467, USA
| | - Andrew G. Cox
- Peter MacCallum Cancer Centre, Melbourne, Victoria 3000, Australia
- The Sir Peter MacCallum Department of Oncology, The University of Melbourne, Melbourne, Victoria 3000, Australia
- Department of Biochemistry and Pharmacology, The University of Melbourne, Melbourne, Victoria 3000, Australia
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6
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Jeong I, Andreassen SN, Hoang L, Poulain M, Seo Y, Park HC, Fürthauer M, MacAulay N, Jurisch-Yaksi N. The evolutionarily conserved choroid plexus contributes to the homeostasis of brain ventricles in zebrafish. Cell Rep 2024; 43:114331. [PMID: 38843394 DOI: 10.1016/j.celrep.2024.114331] [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: 11/14/2023] [Revised: 04/24/2024] [Accepted: 05/22/2024] [Indexed: 07/02/2024] Open
Abstract
The choroid plexus (ChP) produces cerebrospinal fluid (CSF). It also contributes to brain development and serves as the CSF-blood barrier. Prior studies have identified transporters on the epithelial cells that transport water and ions from the blood vasculature to the ventricles and tight junctions involved in the CSF-blood barrier. Yet, how the ChP epithelial cells control brain physiology remains unresolved. We use zebrafish to provide insights into the physiological roles of the ChP. Upon histological and transcriptomic analyses, we identify that the zebrafish ChP is conserved with mammals and expresses transporters involved in CSF secretion. Next, we show that the ChP epithelial cells secrete proteins into CSF. By ablating the ChP epithelial cells, we identify a reduction of the ventricular sizes without alterations of the CSF-blood barrier. Altogether, our findings reveal that the zebrafish ChP is conserved and contributes to the size and homeostasis of the brain ventricles.
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Affiliation(s)
- Inyoung Jeong
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Erling Skjalgsons Gate 1, 7491 Trondheim, Norway
| | - Søren N Andreassen
- Department of Neuroscience, University of Copenhagen, Blegdamsvej 3, 2200 Copenhagen, Denmark
| | - Linh Hoang
- Cellular and Molecular Imaging Core Facility (CMIC), Norwegian University of Science and Technology, Erling Skjalgsons Gate 1, 7491 Trondheim, Norway
| | - Morgane Poulain
- Université Côte d'Azur, CNRS, Inserm, iBV, 28 Avenue Valrose, 06108 Nice cedex 2, France
| | - Yongbo Seo
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul 02841, Republic of Korea
| | - Hae-Chul Park
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul 02841, Republic of Korea
| | - Maximilian Fürthauer
- Université Côte d'Azur, CNRS, Inserm, iBV, 28 Avenue Valrose, 06108 Nice cedex 2, France
| | - Nanna MacAulay
- Department of Neuroscience, University of Copenhagen, Blegdamsvej 3, 2200 Copenhagen, Denmark
| | - Nathalie Jurisch-Yaksi
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Erling Skjalgsons Gate 1, 7491 Trondheim, Norway.
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7
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Sande-Melon M, Bergemann D, Fernández-Lajarín M, González-Rosa JM, Cox AG. Development of a hepatic cryoinjury model to study liver regeneration. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2023.07.24.550437. [PMID: 38948752 PMCID: PMC11212901 DOI: 10.1101/2023.07.24.550437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/02/2024]
Abstract
The liver is a remarkable organ that can regenerate in response to injury. Depending on the extent of injury, the liver can undergo compensatory hyperplasia or fibrosis. Despite decades of research, the molecular mechanisms underlying these processes are poorly understood. Here, we developed a new model to study liver regeneration based on cryoinjury. To visualise liver regeneration at cellular resolution, we adapted the CUBIC tissue-clearing approach. Hepatic cryoinjury induced a localised necrotic and apoptotic lesion characterised by inflammation and infiltration of innate immune cells. Following this initial phase, we observed fibrosis, which resolved as regeneration re-established homeostasis in 30 days. Importantly, this approach enables the comparison of healthy and injured parenchyma with an individual animal, providing unique advantages to previous models. In summary, the hepatic cryoinjury model provides a fast and reproducible method for studying the cellular and molecular pathways underpinning fibrosis and liver regeneration.
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Affiliation(s)
- Marcos Sande-Melon
- Peter MacCallum Cancer Centre, Melbourne, Victoria, 3000, Australia
- The Sir Peter MacCallum Department of Oncology, The University of Melbourne, Melbourne, Victoria, 3000, Australia
| | - David Bergemann
- Cardiovascular Research Centre, Massachusetts General Hospital Research Institute, Charlestown Navy Yard Campus, 149, 13 Street, 02129 MA, USA
- Harvard Medical School
| | - Miriam Fernández-Lajarín
- Cardiovascular Research Centre, Massachusetts General Hospital Research Institute, Charlestown Navy Yard Campus, 149, 13 Street, 02129 MA, USA
- Harvard Medical School
- Biology Department, Morrissey College of Arts and Sciences, Boston College, Chestnut Hill, MA 02467
| | - Juan Manuel González-Rosa
- Cardiovascular Research Centre, Massachusetts General Hospital Research Institute, Charlestown Navy Yard Campus, 149, 13 Street, 02129 MA, USA
- Harvard Medical School
- Biology Department, Morrissey College of Arts and Sciences, Boston College, Chestnut Hill, MA 02467
| | - Andrew G. Cox
- Peter MacCallum Cancer Centre, Melbourne, Victoria, 3000, Australia
- The Sir Peter MacCallum Department of Oncology, The University of Melbourne, Melbourne, Victoria, 3000, Australia
- Department of Biochemistry and Pharmacology, The University of Melbourne, Melbourne, Victoria, 3000, Australia
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8
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Shaw DK, Saraswathy VM, McAdow AR, Zhou L, Park D, Mote R, Johnson AN, Mokalled MH. Elevated phagocytic capacity directs innate spinal cord repair. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.06.11.598515. [PMID: 38915507 PMCID: PMC11195157 DOI: 10.1101/2024.06.11.598515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/26/2024]
Abstract
Immune cells elicit a continuum of transcriptional and functional states after spinal cord injury (SCI). In mammals, inefficient debris clearance and chronic inflammation impede recovery and overshadow pro-regenerative immune functions. We found that, unlike mammals, zebrafish SCI elicits transient immune activation and efficient debris clearance, without causing chronic inflammation. Single-cell transcriptomics and inducible genetic ablation showed zebrafish macrophages are highly phagocytic and required for regeneration. Cross-species comparisons between zebrafish and mammalian macrophages identified transcription and immune response regulator ( tcim ) as a macrophage-enriched zebrafish gene. Genetic deletion of zebrafish tcim impairs phagocytosis and regeneration, causes aberrant and chronic immune activation, and can be rescued by transplanting wild-type immune precursors into tcim mutants. Conversely, genetic expression of human TCIM accelerates debris clearance and regeneration by reprogramming myeloid precursors into activated phagocytes. This study establishes a central requirement for elevated phagocytic capacity to achieve innate spinal cord repair.
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9
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Paulissen E, Martin BL. A Chemically Inducible Muscle Ablation System for the Zebrafish. Zebrafish 2024; 21:243-249. [PMID: 38436568 PMCID: PMC11301710 DOI: 10.1089/zeb.2023.0102] [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] [Indexed: 03/05/2024] Open
Abstract
An effective method for tissue-specific ablation in zebrafish is the nitroreductase (NTR)/metronidazole (MTZ) system. Expressing bacterial NTR in the presence of nitroimidazole compounds causes apoptotic cell death, which can be useful for understanding many biological processes. However, this requires tissue-specific expression of the NTR enzyme, and many tissues have yet to be targeted with transgenic lines that express NTR. We generated a transgenic zebrafish line expressing NTR in differentiated skeletal muscle. Treatment of embryos with MTZ caused muscle specific cell ablation. We demonstrate this line can be used to monitor muscle regeneration in whole embryos and in transplanted transgenic cells.
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Affiliation(s)
- Eric Paulissen
- Department of Biochemistry and Cell Biology, Stony Brook University, Stony Brook, New York, USA
| | - Benjamin L. Martin
- Department of Biochemistry and Cell Biology, Stony Brook University, Stony Brook, New York, USA
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10
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Ichikawa K, McGrew MJ. Innovations in poultry reproduction using cryopreserved avian germ cells. Reprod Domest Anim 2024; 59:e14591. [PMID: 38798199 DOI: 10.1111/rda.14591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 04/19/2024] [Accepted: 05/03/2024] [Indexed: 05/29/2024]
Abstract
Meat and eggs from chicken are the major source of animal protein for the human population. The cryopreservation of poultry species is needed to guarantee sustainable production. Here, we describe the existing cryopreservation technologies for avian reproductive cells using embryonic germ cells, spermatozoa and ovarian tissues. We outline strategies to reconstitute chicken breeds from their cryopreserved embryonic germ cells using surrogate hosts and discuss the perspectives for genetic conservation and reconstitution of chicken and wild avian species using surrogate host animals.
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Affiliation(s)
- Kennosuke Ichikawa
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Midlothian, UK
| | - Mike J McGrew
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Midlothian, UK
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11
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Sun J, Peterson EA, Chen X, Wang J. ptx3a + fibroblast/epicardial cells provide a transient macrophage niche to promote heart regeneration. Cell Rep 2024; 43:114092. [PMID: 38607913 PMCID: PMC11092985 DOI: 10.1016/j.celrep.2024.114092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 02/28/2024] [Accepted: 03/27/2024] [Indexed: 04/14/2024] Open
Abstract
Macrophages conduct critical roles in heart repair, but the niche required to nurture and anchor them is poorly studied. Here, we investigated the macrophage niche in the regenerating heart. We analyzed cell-cell interactions through published single-cell RNA sequencing datasets and identified a strong interaction between fibroblast/epicardial (Fb/Epi) cells and macrophages. We further visualized the association of macrophages with Fb/Epi cells and the blockage of macrophage response without Fb/Epi cells in the regenerating zebrafish heart. Moreover, we found that ptx3a+ epicardial cells associate with reparative macrophages, and their depletion resulted in fewer reparative macrophages. Further, we identified csf1a expression in ptx3a+ cells and determined that pharmacological inhibition of the csf1a pathway or csf1a knockout blocked the reparative macrophage response. Moreover, we found that genetic overexpression of csf1a enhanced the reparative macrophage response with or without heart injury. Altogether, our studies illuminate a cardiac Fb/Epi niche, which mediates a beneficial macrophage response after heart injury.
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Affiliation(s)
- Jisheng Sun
- Cardiology Division, School of Medicine, Emory University, Atlanta, GA 30322, USA
| | - Elizabeth A Peterson
- Cardiology Division, School of Medicine, Emory University, Atlanta, GA 30322, USA
| | - Xin Chen
- Cardiology Division, School of Medicine, Emory University, Atlanta, GA 30322, USA
| | - Jinhu Wang
- Cardiology Division, School of Medicine, Emory University, Atlanta, GA 30322, USA.
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12
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Chen J, Wang H, Wu S, Zhang A, Qiu Z, Huang P, Qu JY, Xu J. col1a2+ fibroblasts/muscle progenitors finetune xanthophore countershading by differentially expressing csf1a/1b in embryonic zebrafish. SCIENCE ADVANCES 2024; 10:eadj9637. [PMID: 38578990 PMCID: PMC10997200 DOI: 10.1126/sciadv.adj9637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 02/29/2024] [Indexed: 04/07/2024]
Abstract
Animals evolve diverse pigment patterns to adapt to the natural environment. Countershading, characterized by a dark-colored dorsum and a light-colored ventrum, is one of the most prevalent pigment patterns observed in vertebrates. In this study, we reveal a mechanism regulating xanthophore countershading in zebrafish embryos. We found that csf1a and csf1b mutants altered xanthophore countershading differently: csf1a mutants lack ventral xanthophores, while csf1b mutants have reduced dorsal xanthophores. Further study revealed that csf1a is expressed throughout the trunk, whereas csf1b is expressed dorsally. Ectopic expression of csf1a or csf1b in neurons attracted xanthophores into the spinal cord. Blocking csf1 signaling by csf1ra mutants disrupts spinal cord distribution and normal xanthophores countershading. Single-cell RNA sequencing identified two col1a2+ populations: csf1ahighcsf1bhigh muscle progenitors and csf1ahighcsf1blow fibroblast progenitors. Ablation of col1a2+ fibroblast and muscle progenitors abolished xanthophore patterns. Our study suggests that fibroblast and muscle progenitors differentially express csf1a and csf1b to modulate xanthophore patterning, providing insights into the mechanism of countershading.
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Affiliation(s)
- Jiahao Chen
- Department of Neurology, the Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou 510006, China
- Innovation Centre of Ministry of Education for Development and Diseases, School of Medicine, South China University of Technology, Guangzhou 510006, China
| | - Honggao Wang
- Innovation Centre of Ministry of Education for Development and Diseases, School of Medicine, South China University of Technology, Guangzhou 510006, China
| | - Shuting Wu
- Department of Neurobiology, Harvard Medical School, 220 Longwood Avenue, Boston, MA 02115, USA
| | - Ao Zhang
- Division of Life Science, State Key Laboratory of Molecular Neuroscience, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, PRC
| | - Zhongkai Qiu
- Innovation Centre of Ministry of Education for Development and Diseases, School of Medicine, South China University of Technology, Guangzhou 510006, China
| | - Peng Huang
- Department of Biochemistry and Molecular Biology, Alberta Children's Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, AB T2N 4N1, Canada
| | - Jianan Y Qu
- Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Kowloon, China
| | - Jin Xu
- Department of Neurology, the Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou 510006, China
- Innovation Centre of Ministry of Education for Development and Diseases, School of Medicine, South China University of Technology, Guangzhou 510006, China
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13
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Hong J, Sohn KC, Park HW, Jeon H, Ju E, Lee JG, Lee JS, Rho J, Hur GM, Ro H. All-in-one IQ toggle switches with high versatilities for fine-tuning of transgene expression in mammalian cells and tissues. Mol Ther Methods Clin Dev 2024; 32:101202. [PMID: 38374964 PMCID: PMC10875299 DOI: 10.1016/j.omtm.2024.101202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 01/29/2024] [Indexed: 02/21/2024]
Abstract
The transgene toggling device is recognized as a powerful tool for gene- and cell-based biological research and precision medicine. However, many of these devices often operate in binary mode, exhibit unacceptable leakiness, suffer from transgene silencing, show cytotoxicity, and have low potency. Here, we present a novel transgene switch, SIQ, wherein all the elements for gene toggling are packed into a single vector. SIQ has superior potency in inducing transgene expression in response to tebufenozide compared with the Gal4/UAS system, while completely avoiding transgene leakiness. Additionally, the ease and versatility of SIQ make it possible with a single construct to perform transient transfection, establish stable cell lines by targeting a predetermined genomic locus, and simultaneously produce adenovirus for transduction into cells and mammalian tissues. Furthermore, we integrated a cumate switch into SIQ, called SIQmate, to operate a Boolean AND logic gate, enabling swift toggling-off of the transgene after the removal of chemical inducers, tebufenozide and cumate. Both SIQ and SIQmate offer precise transgene toggling, making them adjustable for various researches, including synthetic biology, genome engineering, and therapeutics.
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Affiliation(s)
- Jeongkwan Hong
- Department of Biological Sciences, College of Bioscience and Biotechnology, Chungnam National University, Daejeon 34134, Korea (ROK)
| | - Kyung-Cheol Sohn
- Department of Pharmacology, College of Medicine, Chungnam National University, Daejeon 301 747, Korea (ROK)
| | - Hye-Won Park
- Department of Microbiology and Molecular Biology, College of Bioscience and Biotechnology, Chungnam National University, Daejeon 34134, Korea (ROK)
| | - Hyoeun Jeon
- Department of Microbiology and Molecular Biology, College of Bioscience and Biotechnology, Chungnam National University, Daejeon 34134, Korea (ROK)
| | - Eunjin Ju
- Department of Pharmacology, College of Medicine, Chungnam National University, Daejeon 301 747, Korea (ROK)
| | - Jae-Geun Lee
- Microbiome Convergence Research Center, KRIBB, 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Jeong-Soo Lee
- Microbiome Convergence Research Center, KRIBB, 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
- KRIBB School, University of Science and Technology, 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Jaerang Rho
- Department of Microbiology and Molecular Biology, College of Bioscience and Biotechnology, Chungnam National University, Daejeon 34134, Korea (ROK)
| | - Gang Min Hur
- Department of Pharmacology, College of Medicine, Chungnam National University, Daejeon 301 747, Korea (ROK)
| | - Hyunju Ro
- Department of Biological Sciences, College of Bioscience and Biotechnology, Chungnam National University, Daejeon 34134, Korea (ROK)
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14
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Elsaid R, Mikdache A, Castillo KQ, Salloum Y, Diabangouaya P, Gros G, Feijoo CG, Hernández PP. Definitive hematopoiesis is dispensable to sustain erythrocytes and macrophages during zebrafish ontogeny. iScience 2024; 27:108922. [PMID: 38327794 PMCID: PMC10847700 DOI: 10.1016/j.isci.2024.108922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 09/23/2023] [Accepted: 01/12/2024] [Indexed: 02/09/2024] Open
Abstract
In all organisms studied, from flies to humans, blood cells emerge in several sequential waves and from distinct hematopoietic origins. However, the relative contribution of these ontogenetically distinct hematopoietic waves to embryonic blood lineages and to tissue regeneration during development is yet elusive. Here, using a lineage-specific "switch and trace" strategy in the zebrafish embryo, we report that the definitive hematopoietic progeny barely contributes to erythrocytes and macrophages during early development. Lineage tracing further shows that ontogenetically distinct macrophages exhibit differential recruitment to the site of injury based on the developmental stage of the organism. We further demonstrate that primitive macrophages can solely maintain tissue regeneration during early larval developmental stages after selective ablation of definitive macrophages. Our findings highlight that the sequential emergence of hematopoietic waves in embryos ensures the abundance of blood cells required for tissue homeostasis and integrity during development.
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Affiliation(s)
- Ramy Elsaid
- Institut Curie, PSL Research University CNRS UMR 3215, INSERM U934, 26 Rue d’Ulm, 75248 Paris Cedex 05, France
| | - Aya Mikdache
- Institut Curie, PSL Research University CNRS UMR 3215, INSERM U934, 26 Rue d’Ulm, 75248 Paris Cedex 05, France
| | - Keinis Quintero Castillo
- Fish Immunology Laboratory, Faculty of Life Science, Andres Bello University, Santiago 8370146, Chile
| | - Yazan Salloum
- Institut Curie, PSL Research University CNRS UMR 3215, INSERM U934, 26 Rue d’Ulm, 75248 Paris Cedex 05, France
| | - Patricia Diabangouaya
- Institut Curie, PSL Research University CNRS UMR 3215, INSERM U934, 26 Rue d’Ulm, 75248 Paris Cedex 05, France
| | - Gwendoline Gros
- Institut Curie, PSL Research University CNRS UMR 3215, INSERM U934, 26 Rue d’Ulm, 75248 Paris Cedex 05, France
| | - Carmen G. Feijoo
- Fish Immunology Laboratory, Faculty of Life Science, Andres Bello University, Santiago 8370146, Chile
| | - Pedro P. Hernández
- Institut Curie, PSL Research University CNRS UMR 3215, INSERM U934, 26 Rue d’Ulm, 75248 Paris Cedex 05, France
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15
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Cudak N, López-Delgado AC, Rost F, Kurth T, Lesche M, Reinhardt S, Dahl A, Rulands S, Knopf F. Compartmentalization and synergy of osteoblasts drive bone formation in the regenerating fin. iScience 2024; 27:108841. [PMID: 38318374 PMCID: PMC10838958 DOI: 10.1016/j.isci.2024.108841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 12/13/2023] [Accepted: 01/03/2024] [Indexed: 02/07/2024] Open
Abstract
Zebrafish regenerate their fins which involves a component of cell plasticity. It is currently unclear how regenerate cells divide labor to allow for appropriate growth and patterning. Here, we studied lineage relationships of fluorescence-activated cell sorting-enriched epidermal, bone-forming (osteoblast), and (non-osteoblast) blastemal fin regenerate cells by single-cell RNA sequencing, lineage tracing, targeted osteoblast ablation, and electron microscopy. Most osteoblasts in the outgrowing regenerate derive from osterix+ osteoblasts, while mmp9+ cells reside at segment joints. Distal blastema cells contribute to distal osteoblast progenitors, suggesting compartmentalization of the regenerating appendage. Ablation of osterix+ osteoblasts impairs segment joint and bone matrix formation and decreases regenerate length which is partially compensated for by distal regenerate cells. Our study characterizes expression patterns and lineage relationships of rare fin regenerate cell populations, indicates inherent detection and compensation of impaired regeneration, suggests variable dependence on growth factor signaling, and demonstrates zonation of the elongating fin regenerate.
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Affiliation(s)
- Nicole Cudak
- CRTD - Center for Regenerative Therapies TU Dresden, Dresden, Germany
- Center for Healthy Aging, Faculty of Medicine, TU Dresden, Dresden, Germany
| | - Alejandra Cristina López-Delgado
- CRTD - Center for Regenerative Therapies TU Dresden, Dresden, Germany
- Center for Healthy Aging, Faculty of Medicine, TU Dresden, Dresden, Germany
| | - Fabian Rost
- DRESDEN-concept Genome Center, DFG NGS Competence Center, c/o Center for Molecular and Cellular Bioengineering (CMCB), TU Dresden, Dresden, Germany
| | - Thomas Kurth
- Core Facility Electron Microscopy and Histology, Technology Platform, Center for Molecular and Cellular Bioengineering (CMCB), TU Dresden, Dresden, Germany
| | - Mathias Lesche
- DRESDEN-concept Genome Center, DFG NGS Competence Center, c/o Center for Molecular and Cellular Bioengineering (CMCB), TU Dresden, Dresden, Germany
| | - Susanne Reinhardt
- DRESDEN-concept Genome Center, DFG NGS Competence Center, c/o Center for Molecular and Cellular Bioengineering (CMCB), TU Dresden, Dresden, Germany
| | - Andreas Dahl
- DRESDEN-concept Genome Center, DFG NGS Competence Center, c/o Center for Molecular and Cellular Bioengineering (CMCB), TU Dresden, Dresden, Germany
| | - Steffen Rulands
- Max Planck Institute for the Physics of Complex Systems, Dresden, Germany
- Ludwig-Maximilians-Universität München, Arnold-Sommerfeld-Center for Theoretical Physics, München, Germany
| | - Franziska Knopf
- CRTD - Center for Regenerative Therapies TU Dresden, Dresden, Germany
- Center for Healthy Aging, Faculty of Medicine, TU Dresden, Dresden, Germany
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16
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Ambrosio EMG, Bailey CSL, Unterweger IA, Christensen JB, Bruchez MP, Lundegaard PR, Ober EA. LiverZap: a chemoptogenetic tool for global and locally restricted hepatocyte ablation to study cellular behaviours in liver regeneration. Development 2024; 151:dev202217. [PMID: 38381702 DOI: 10.1242/dev.202217] [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: 07/24/2023] [Accepted: 01/04/2024] [Indexed: 02/23/2024]
Abstract
The liver restores its mass and architecture after injury. Yet, investigating morphogenetic cell behaviours and signals that repair tissue architecture at high spatiotemporal resolution remains challenging. We developed LiverZap, a tuneable chemoptogenetic liver injury model in zebrafish. LiverZap employs the formation of a binary FAP-TAP photosensitiser followed by brief near-infrared illumination inducing hepatocyte-specific death and recapitulating mammalian liver injury types. The tool enables local hepatocyte ablation and extended live imaging capturing regenerative cell behaviours, which is crucial for studying cellular interactions at the interface of healthy and damaged tissue. Applying LiverZap, we show that targeted hepatocyte ablation in a small region of interest is sufficient to trigger local liver progenitor-like cell (LPC)-mediated regeneration, challenging the current understanding of liver regeneration. Surprisingly, the LPC response is also elicited in adjacent uninjured tissue, at up to 100 µm distance to the injury. Moreover, dynamic biliary network rearrangement suggests active cell movements from uninjured tissue in response to substantial hepatocyte loss as an integral step of LPC-mediated liver regeneration. This precisely targetable liver cell ablation tool will enable the discovery of key molecular and morphogenetic regeneration paradigms.
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Affiliation(s)
- Elizabeth M G Ambrosio
- Novo Nordisk Foundation Center for Stem Cell Biology, University of Copenhagen, Blegdamsvej 3B, 2200 Copenhagen N, Denmark
- University of Copenhagen, Department of Biomedical Sciences, Blegdamsvej 3B, 2200 Copenhagen N, Denmark
| | - Charlotte S L Bailey
- Novo Nordisk Foundation Center for Stem Cell Biology, University of Copenhagen, Blegdamsvej 3B, 2200 Copenhagen N, Denmark
| | - Iris A Unterweger
- Novo Nordisk Foundation Center for Stem Cell Biology, University of Copenhagen, Blegdamsvej 3B, 2200 Copenhagen N, Denmark
- University of Copenhagen, Department of Biomedical Sciences, Blegdamsvej 3B, 2200 Copenhagen N, Denmark
| | - Jens B Christensen
- Novo Nordisk Foundation Center for Stem Cell Biology, University of Copenhagen, Blegdamsvej 3B, 2200 Copenhagen N, Denmark
- Wellcome Trust/Cancer Research UK Gurdon Institute, Cambridge University, Cambridge CB2 1NQ, UK
- Department of Physiology, Development and Neuroscience, Cambridge University, Cambridge CB2 3DY, UK
| | - Marcel P Bruchez
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, PA 15217, USA
| | - Pia R Lundegaard
- University of Copenhagen, Department of Biomedical Sciences, Blegdamsvej 3B, 2200 Copenhagen N, Denmark
| | - Elke A Ober
- Novo Nordisk Foundation Center for Stem Cell Biology, University of Copenhagen, Blegdamsvej 3B, 2200 Copenhagen N, Denmark
- University of Copenhagen, Department of Biomedical Sciences, Blegdamsvej 3B, 2200 Copenhagen N, Denmark
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17
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Liu Z, Meng Y, Ishikura A, Kawakami A. Live tracking of basal stem cells of the epidermis during growth, homeostasis and injury response in zebrafish. Development 2024; 151:dev202315. [PMID: 38265193 DOI: 10.1242/dev.202315] [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: 08/30/2023] [Accepted: 12/19/2023] [Indexed: 01/18/2024]
Abstract
Basal stem cells of the epidermis continuously differentiate into keratinocytes and replenish themselves via self-renewal to maintain skin homeostasis. Numerous studies have attempted to reveal how basal cells undergo differentiation or self-renewal; however, this has been hampered by a lack of robust basal cell markers and analytical platforms that allow single-cell tracking. Here, we report that zebrafish integrin beta 4 is a useful marker for basal cell labelling, irrespective of the body region, stage and regenerative status. We employed Cre-loxP recombination in combination with live cell tracking of single basal clones in the caudal fin and investigated the embryonic origin and behaviour of basal cells during fish growth and homeostasis. Although most basal cells, including those in fins, became quiescent in the adult stage, genetic cell ablation showed that basal cells were reactivated to either self-renew or differentiate, depending on the injured cell type. Our study provides a simple and easy-to-use platform for quantitative in vivo imaging of basal stem cells at wider stages and under various conditions.
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Affiliation(s)
- Zhengcheng Liu
- School of Life Science and Technology , Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8501, Japan
| | - Yidan Meng
- School of Life Science and Technology , Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8501, Japan
| | - Ayu Ishikura
- School of Life Science and Technology , Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8501, Japan
| | - Atsushi Kawakami
- School of Life Science and Technology , Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8501, Japan
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18
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Ermis E, Nargis T, Webster K, Tersey SA, Anderson RM, Mirmira RG. Leukotriene B4 receptor 2 governs macrophage migration during tissue inflammation. J Biol Chem 2024; 300:105561. [PMID: 38097183 PMCID: PMC10790086 DOI: 10.1016/j.jbc.2023.105561] [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: 09/07/2023] [Revised: 11/12/2023] [Accepted: 11/29/2023] [Indexed: 01/01/2024] Open
Abstract
Chronic inflammation is the underlying cause of many diseases, including type 1 diabetes, obesity, and non-alcoholic fatty liver disease. Macrophages are continuously recruited to tissues during chronic inflammation where they exacerbate or resolve the pro-inflammatory environment. Although leukotriene B4 receptor 2 (BLT2) has been characterized as a low affinity receptor to several key eicosanoids and chemoattractants, its precise roles in the setting of inflammation and macrophage function remain incompletely understood. Here we used zebrafish and mouse models to probe the role of BLT2 in macrophage function during inflammation. We detected BLT2 expression in bone marrow derived and peritoneal macrophages of mouse models. Transcriptomic analysis of Ltb4r2-/- and WT macrophages suggested a role for BLT2 in macrophage migration, and studies in vitro confirmed that whereas BLT2 does not mediate macrophage polarization, it is required for chemotactic function, possibly mediated by downstream genes Ccl5 and Lgals3. Using a zebrafish model of tailfin injury, we demonstrated that antisense morpholino-mediated knockdown of blt2a or chemical inhibition of BLT2 signaling impairs macrophage migration. We further replicated these findings in zebrafish models of islet injury and liver inflammation. Moreover, we established the applicability of our zebrafish findings to mammals by showing that macrophages of Ltb4r2-/- mice have defective migration during lipopolysaccharide stimulation in vivo. Collectively, our results demonstrate that BLT2 mediates macrophage migration during inflammation, which implicates it as a potential therapeutic target for inflammatory pathologies.
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Affiliation(s)
- Ebru Ermis
- Kovler Diabetes Center, The University of Chicago, Chicago, Illinois, USA; The College, The University of Chicago, Chicago, Illinois, USA
| | - Titli Nargis
- Kovler Diabetes Center, The University of Chicago, Chicago, Illinois, USA; Department of Medicine, The University of Chicago, Chicago, Illinois, USA
| | - Kierstin Webster
- Kovler Diabetes Center, The University of Chicago, Chicago, Illinois, USA; Department of Medicine, The University of Chicago, Chicago, Illinois, USA
| | - Sarah A Tersey
- Kovler Diabetes Center, The University of Chicago, Chicago, Illinois, USA; Department of Medicine, The University of Chicago, Chicago, Illinois, USA
| | - Ryan M Anderson
- Kovler Diabetes Center, The University of Chicago, Chicago, Illinois, USA; Department of Medicine, The University of Chicago, Chicago, Illinois, USA.
| | - Raghavendra G Mirmira
- Kovler Diabetes Center, The University of Chicago, Chicago, Illinois, USA; The College, The University of Chicago, Chicago, Illinois, USA; Department of Medicine, The University of Chicago, Chicago, Illinois, USA; Department of Pediatrics, The University of Chicago, Chicago, Illinois, USA.
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19
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Giez C, Pinkle D, Giencke Y, Wittlieb J, Herbst E, Spratte T, Lachnit T, Klimovich A, Selhuber-Unkel C, Bosch TCG. Multiple neuronal populations control the eating behavior in Hydra and are responsive to microbial signals. Curr Biol 2023; 33:5288-5303.e6. [PMID: 37995697 DOI: 10.1016/j.cub.2023.10.038] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 09/05/2023] [Accepted: 10/20/2023] [Indexed: 11/25/2023]
Abstract
Although recent studies indicate the impact of microbes on the central nervous systems and behavior, it remains unclear how the relationship between the functionality of the nervous system, behavior, and the microbiota evolved. In this work, we analyzed the eating behavior of Hydra, a host that has a simple nervous system and a low-complexity microbiota. To identify the neuronal subpopulations involved, we used a subpopulation-specific cell ablation system and calcium imaging. The role of the microbiota was uncovered by manipulating the diversity of the natural microbiota. We show that different neuronal subpopulations are functioning together to control eating behavior. Animals with a drastically reduced microbiome had severe difficulties in mouth opening due to a significantly increased level of glutamate. This could be reversed by adding a full complement of the microbiota. In summary, we provide a mechanistic explanation of how Hydra's nervous system controls eating behavior and what role microbes play in this.
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Affiliation(s)
- Christoph Giez
- Zoological Institute, University of Kiel, Christian-Albrechts-Platz 4, 24118 Kiel, Germany.
| | - Denis Pinkle
- Zoological Institute, University of Kiel, Christian-Albrechts-Platz 4, 24118 Kiel, Germany
| | - Yan Giencke
- Zoological Institute, University of Kiel, Christian-Albrechts-Platz 4, 24118 Kiel, Germany
| | - Jörg Wittlieb
- Zoological Institute, University of Kiel, Christian-Albrechts-Platz 4, 24118 Kiel, Germany
| | - Eva Herbst
- Zoological Institute, University of Kiel, Christian-Albrechts-Platz 4, 24118 Kiel, Germany
| | - Tobias Spratte
- Institute for Molecular Systems Engineering and Advanced Materials (INSEAM), University Heidelberg, Im Neuenheimer Feld 225, 69120 Heidelberg, Germany
| | - Tim Lachnit
- Zoological Institute, University of Kiel, Christian-Albrechts-Platz 4, 24118 Kiel, Germany
| | - Alexander Klimovich
- Zoological Institute, University of Kiel, Christian-Albrechts-Platz 4, 24118 Kiel, Germany
| | - Christine Selhuber-Unkel
- Institute for Molecular Systems Engineering and Advanced Materials (INSEAM), University Heidelberg, Im Neuenheimer Feld 225, 69120 Heidelberg, Germany
| | - Thomas C G Bosch
- Zoological Institute, University of Kiel, Christian-Albrechts-Platz 4, 24118 Kiel, Germany.
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20
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Chen Q, Leshkowitz D, Li H, van Impel A, Schulte-Merker S, Amit I, Rizzoti K, Levkowitz G. Neural plate progenitors give rise to both anterior and posterior pituitary cells. Dev Cell 2023; 58:2652-2665.e6. [PMID: 37683631 DOI: 10.1016/j.devcel.2023.08.018] [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: 08/10/2022] [Revised: 05/14/2023] [Accepted: 08/09/2023] [Indexed: 09/10/2023]
Abstract
The pituitary is the master neuroendocrine gland, which regulates body homeostasis. It consists of the anterior pituitary/adenohypophysis harboring hormones producing cells and the posterior pituitary/neurohypophysis, which relays the passage of hormones from the brain to the periphery. It is accepted that the adenohypophysis originates from the oral ectoderm (Rathke's pouch), whereas the neural ectoderm contributes to the neurohypophysis. Single-cell transcriptomics of the zebrafish pituitary showed that cyp26b1-positive astroglial pituicytes of the neurohypophysis and prop1-positive adenohypophyseal progenitors expressed common markers implying lineage relatedness. Genetic tracing identifies that, in contrast to the prevailing dogma, neural plate precursors of zebrafish (her4.3+) and mouse (Sox1+) contribute to both neurohypophyseal and a subset of adenohypophyseal cells. Pituicyte-derived retinoic-acid-degrading enzyme Cyp26b1 fine-tunes differentiation of prop1+ progenitors into hormone-producing cells. These results challenge the notion that adenohypophyseal cells are exclusively derived from non-neural ectoderm and demonstrate that crosstalk between neuro- and adeno-hypophyseal cells affects differentiation of pituitary cells.
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Affiliation(s)
- Qiyu Chen
- Department of Molecular Cell Biology, Weizmann Institute of Science, PO Box 26, Rehovot 7610001, Israel; Department of Molecular Neuroscience, Weizmann Institute of Science, PO Box 26, Rehovot 7610001, Israel
| | - Dena Leshkowitz
- Life Science Core Facilities, Weizmann Institute of Science, PO Box 26, Rehovot 7610001, Israel
| | - Hanjie Li
- Department of Systems Immunology, Weizmann Institute of Science, PO Box 26, Rehovot 7610001, Israel; Present address: CAS Key Laboratory of Quantitative Engineering Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Andreas van Impel
- Institute for Cardiovascular Organogenesis and Regeneration, Faculty of Medicine, Cells-in-Motion Cluster of Excellence, WWU Münster, Münster, Germany
| | - Stefan Schulte-Merker
- Institute for Cardiovascular Organogenesis and Regeneration, Faculty of Medicine, Cells-in-Motion Cluster of Excellence, WWU Münster, Münster, Germany
| | - Ido Amit
- Department of Systems Immunology, Weizmann Institute of Science, PO Box 26, Rehovot 7610001, Israel
| | - Karine Rizzoti
- Stem Cell Biology and Developmental Genetics Lab, The Francis Crick Institute, London, UK
| | - Gil Levkowitz
- Department of Molecular Cell Biology, Weizmann Institute of Science, PO Box 26, Rehovot 7610001, Israel; Department of Molecular Neuroscience, Weizmann Institute of Science, PO Box 26, Rehovot 7610001, Israel.
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21
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Wang F, Feng YY, Wang XG, Ou M, Zhang XC, Zhao J, Chen KC, Li KB. Production of all-male non-transgenic zebrafish by conditional primordial germ cell ablation. FISH PHYSIOLOGY AND BIOCHEMISTRY 2023; 49:1215-1227. [PMID: 37857788 DOI: 10.1007/s10695-023-01252-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 10/07/2023] [Indexed: 10/21/2023]
Abstract
Many fish species exhibit remarkable sexual dimorphism, with males possessing numerous advantageous traits for commercial production by aquaculture such as faster growth rate, more efficient food energy utilization for muscle development, and better breeding performance. Several studies have shown that a decrease in the number of primordial germ cells (PGCs) during early development leads predominantly to male progeny. In this study, we developed a method to obtain all-male zebrafish (Danio rerio) by targeted PGC ablation using the nitroreductase/metronidazole (NTR/Mtz) system. Embryos generated by female heterozygous Tg(nanos3:nfsB-mCherry-nanos3 3'UTR) and male wild-types (WTs) were treated with vehicle or Mtz. Compared to vehicle-treated controls, 5.0 and 10.0 mM Mtz treatment for 24 h significantly reduced the number of PGCs and yielded an exclusively male phenotype in adulthood. The gonads of offspring treated with 5.0 mM Mtz exhibited relatively normal morphology and histological characteristics. Furthermore, these males were able to chase females, spawn, and produce viable offspring, while about 20.0% of males treated with 10.0 mM Mtz were unable to produce viable offspring. The 5.0 mM Mtz treatment protocol may thus be suitable for large-scale production of fertile male offspring. Moreover, about half of these males were WT as evidenced by the absence of nfsB gene expression. It may thus be possible to breed an all-male WT fish population by Mtz-mediated PGC ablation.
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Affiliation(s)
- Fang Wang
- Key Laboratory of Tropical and Subtropical Fishery Resources Application and Cultivation, Ministry of Agriculture, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, No. 1 Xingyu Road, Guangzhou, 510380, Guangdong, China
| | - Yong-Yong Feng
- College of Seed and Facility Agricultural Engineering, Weifang University, Weifang, China
| | - Xu-Guang Wang
- The Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, Guangdong, China
| | - Mi Ou
- Key Laboratory of Tropical and Subtropical Fishery Resources Application and Cultivation, Ministry of Agriculture, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, No. 1 Xingyu Road, Guangzhou, 510380, Guangdong, China
| | - Xin-Cheng Zhang
- Key Laboratory of Tropical and Subtropical Fishery Resources Application and Cultivation, Ministry of Agriculture, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, No. 1 Xingyu Road, Guangzhou, 510380, Guangdong, China
| | - Jian Zhao
- Key Laboratory of Tropical and Subtropical Fishery Resources Application and Cultivation, Ministry of Agriculture, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, No. 1 Xingyu Road, Guangzhou, 510380, Guangdong, China
| | - Kun-Ci Chen
- Key Laboratory of Tropical and Subtropical Fishery Resources Application and Cultivation, Ministry of Agriculture, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, No. 1 Xingyu Road, Guangzhou, 510380, Guangdong, China
| | - Kai-Bin Li
- Key Laboratory of Tropical and Subtropical Fishery Resources Application and Cultivation, Ministry of Agriculture, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, No. 1 Xingyu Road, Guangzhou, 510380, Guangdong, China.
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22
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Starkey J, Horstick EJ, Ackerman SD. Glial regulation of critical period plasticity. Front Cell Neurosci 2023; 17:1247335. [PMID: 38034592 PMCID: PMC10687281 DOI: 10.3389/fncel.2023.1247335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Accepted: 10/30/2023] [Indexed: 12/02/2023] Open
Abstract
Animal behavior, from simple to complex, is dependent on the faithful wiring of neurons into functional neural circuits. Neural circuits undergo dramatic experience-dependent remodeling during brief developmental windows called critical periods. Environmental experience during critical periods of plasticity produces sustained changes to circuit function and behavior. Precocious critical period closure is linked to autism spectrum disorders, whereas extended synaptic remodeling is thought to underlie circuit dysfunction in schizophrenia. Thus, resolving the mechanisms that instruct critical period timing is important to our understanding of neurodevelopmental disorders. Control of critical period timing is modulated by neuron-intrinsic cues, yet recent data suggest that some determinants are derived from neighboring glial cells (astrocytes, microglia, and oligodendrocytes). As glia make up 50% of the human brain, understanding how these diverse cells communicate with neurons and with each other to sculpt neural plasticity, especially during specialized critical periods, is essential to our fundamental understanding of circuit development and maintenance.
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Affiliation(s)
- Jacob Starkey
- Department of Biology, West Virginia University, Morgantown, WV, United States
| | - Eric J. Horstick
- Department of Biology, West Virginia University, Morgantown, WV, United States
- Department of Neuroscience, West Virginia University, Morgantown, WV, United States
| | - Sarah D. Ackerman
- Department of Pathology and Immunology, Brain Immunology and Glia Center, Washington University School of Medicine, St. Louis, MO, United States
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23
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Veen K, Krylov A, Yu S, He J, Boyd P, Hyde DR, Mantamadiotis T, Cheng LY, Jusuf PR. Her6 and Prox1a are novel regulators of photoreceptor regeneration in the zebrafish retina. PLoS Genet 2023; 19:e1011010. [PMID: 37930995 PMCID: PMC10653607 DOI: 10.1371/journal.pgen.1011010] [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: 03/26/2023] [Revised: 11/16/2023] [Accepted: 10/03/2023] [Indexed: 11/08/2023] Open
Abstract
Damage to light-sensing photoreceptors (PRs) occurs in highly prevalent retinal diseases. As humans cannot regenerate new PRs, these diseases often lead to irreversible blindness. Intriguingly, animals, such as the zebrafish, can regenerate PRs efficiently and restore functional vision. Upon injury, mature Müller glia (MG) undergo reprogramming to adopt a stem cell-like state. This process is similar to cellular dedifferentiation, and results in the generation of progenitor cells, which, in turn, proliferate and differentiate to replace lost retinal neurons. In this study, we tested whether factors involved in dedifferentiation of Drosophila CNS are implicated in the regenerative response in the zebrafish retina. We found that hairy-related 6 (her6) negatively regulates of PR production by regulating the rate of cell divisions in the MG-derived progenitors. prospero homeobox 1a (prox1a) is expressed in differentiated PRs and may promote PR differentiation through phase separation. Interestingly, upon Her6 downregulation, Prox1a is precociously upregulated in the PRs, to promote PR differentiation; conversely, loss of Prox1a also induces a downregulation of Her6. Together, we identified two novel candidates of PR regeneration that cross regulate each other; these may be exploited to promote human retinal regeneration and vision recovery.
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Affiliation(s)
- Kellie Veen
- Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Melbourne, Victoria, Australia
- School of BioSciences, The University of Melbourne, Melbourne, Victoria, Australia
| | - Aaron Krylov
- School of BioSciences, The University of Melbourne, Melbourne, Victoria, Australia
| | - Shuguang Yu
- Institute of Neuroscience, State Key Laboratory of Neuroscience, CAS Centre for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, China
| | - Jie He
- Institute of Neuroscience, State Key Laboratory of Neuroscience, CAS Centre for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, China
| | - Patrick Boyd
- Department of Biological Sciences, Center for Zebrafish Research, and Center for Stem Cells and Regenerative Medicine, University of Notre Dame, Notre Dame, Indiana, United States of America
| | - David R. Hyde
- Department of Biological Sciences, Center for Zebrafish Research, and Center for Stem Cells and Regenerative Medicine, University of Notre Dame, Notre Dame, Indiana, United States of America
| | - Theo Mantamadiotis
- Department of Microbiology and Immunology, The University of Melbourne, Melbourne, Victoria, Australia
| | - Louise Y. Cheng
- Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Melbourne, Victoria, Australia
- Department of Anatomy and Physiology, The University of Melbourne, Melbourne, Victoria, Australia
| | - Patricia R. Jusuf
- School of BioSciences, The University of Melbourne, Melbourne, Victoria, Australia
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24
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Darrah K, Albright S, Kumbhare R, Tsang M, Chen JK, Deiters A. Antisense Oligonucleotide Activation via Enzymatic Antibiotic Resistance Mechanism. ACS Chem Biol 2023; 18:2176-2182. [PMID: 37326511 PMCID: PMC10592181 DOI: 10.1021/acschembio.3c00027] [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: 01/15/2023] [Accepted: 05/17/2023] [Indexed: 06/17/2023]
Abstract
The structure and mechanism of the bacterial enzyme β-lactamase have been well-studied due to its clinical role in antibiotic resistance. β-Lactamase is known to hydrolyze the β-lactam ring of the cephalosporin scaffold, allowing a spontaneous self-immolation to occur. Previously, cephalosporin-based sensors have been developed to evaluate β-lactamase expression in both mammalian cells and zebrafish embryos. Here, we present a circular caged morpholino oligonucleotide (cMO) activated by β-lactamase-mediated cleavage of a cephalosporin motif capable of silencing the expression of T-box transcription factor Ta (tbxta), also referred to as no tail a (ntla), eliciting a distinct, observable phenotype. We explore the use of β-lactamase to elicit a biological response in aquatic embryos for the first time and expand the utility of cephalosporin as a cleavable linker beyond targeting antibiotic-resistant bacteria. The addition of β-lactamase to the current suite of enzymatic triggers presents unique opportunities for robust, orthogonal control over endogenous gene expression in a spatially resolved manner.
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Affiliation(s)
- Kristie
E. Darrah
- Department
of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Savannah Albright
- Department
of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Rohan Kumbhare
- Department
of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Michael Tsang
- Department
of Developmental Biology, University of
Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - James K. Chen
- Department
of Chemical and Systems Biology, Stanford
University School of Medicine, Stanford, California 94305, United States
| | - Alexander Deiters
- Department
of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
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25
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Schuster KJ, Christiaen L. The Chordate Origins of Heart Regeneration. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.09.19.558507. [PMID: 37781597 PMCID: PMC10541106 DOI: 10.1101/2023.09.19.558507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/03/2023]
Abstract
The human heart is infamous for not healing after infarction in adults, prompting biomedical interest in species that can regenerate damaged hearts. In such animals as zebrafish and neonatal mice, cardiac repair relies on remaining heart tissue supporting cardiomyocyte proliferation. Natural de novo cardiogenesis in post-embryonic stages thus remains elusive. Here we show that the tunicate Ciona, an ascidian among the closest living relatives to the vertebrates, can survive complete chemogenetic ablation of the heart and loss of cardiac function, and recover both cardiac tissue and contractility. As in vertebrates, Ciona heart regeneration relies on Bone Morphogenetic Protein (BMP) signaling-dependent proliferation of cardiomyocytes, providing insights into the evolutionary origins of regenerative cardiogenesis in chordates. Remarkably, prospective lineage tracing by photoconversion of the fluorescent protein Kaede suggested that new cardiomyocytes can emerge from endodermal lineages in post-metamorphic animals, providing an unprecedented case of regenerative de novo cardiogenesis. Finally, while embryos cannot compensate for early losses of the cardiogenic lineage, forming heartless juveniles, developing animals gain their regenerative ability during metamorphosis, uncovering a fundamental transition between deterministic embryogenesis and regulative post-embryonic development.
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Affiliation(s)
- Keaton J Schuster
- Center for Developmental Genetics, Department of Biology, New York University, New York, NY, USA
| | - Lionel Christiaen
- Center for Developmental Genetics, Department of Biology, New York University, New York, NY, USA
- Center for Genomics and Systems Biology, Department of Biology, New York University, New York, NY, USA
- Michael Sars Centre, University of Bergen, Bergen, Norway
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26
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Chen YC, Saito D, Suzuki T, Takemoto T. An inducible germ cell ablation chicken model for high-grade germline chimeras. Development 2023; 150:dev202079. [PMID: 37665168 PMCID: PMC10560566 DOI: 10.1242/dev.202079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 08/24/2023] [Indexed: 09/05/2023]
Abstract
Chicken embryos are a powerful and widely used animal model in developmental biology studies. Since the development of CRISPR technology, gene-edited chickens have been generated by transferring primordial germ cells (PGCs) into recipients after genetic modifications. However, low inheritance caused by competition between host germ cells and the transferred cells is a common complication and greatly reduces production efficiency. Here, we generated a gene-edited chicken, in which germ cells can be ablated in a drug-dependent manner, as recipients for gene-edited PGC transfer. We used the nitroreductase/metronidazole (NTR/Mtz) system for cell ablation, in which nitroreductase produces cytotoxic alkylating agents from administered metronidazole, causing cell apoptosis. The chicken Vasa homolog (CVH) gene locus was used to drive the expression of the nitroreductase gene in a germ cell-specific manner. In addition, a fluorescent protein gene, mCherry, was also placed in the CVH locus to visualize the PGCs. We named this system 'germ cell-specific autonomous removal induction' (gSAMURAI). gSAMURAI chickens will be an ideal recipient to produce offspring derived from transplanted exogenous germ cells.
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Affiliation(s)
- Yi-Chen Chen
- Division of Research and Development, Setsuro Tech Inc., Tokushima 770-8503, Japan
- Laboratory for Embryology, Institute for Advanced Medical Sciences, Tokushima University, Tokushima 770-8503, Japan
| | - Daisuke Saito
- Department of Biology, Faculty of Science, Kyushu University, Fukuoka 819-0395, Japan
| | - Takayuki Suzuki
- Department of Biology, Graduate School of Science, Osaka Metropolitan University, Osaka 558-8585, Japan
| | - Tatsuya Takemoto
- Division of Research and Development, Setsuro Tech Inc., Tokushima 770-8503, Japan
- Laboratory for Embryology, Institute for Advanced Medical Sciences, Tokushima University, Tokushima 770-8503, Japan
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27
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Shimizu N, Shiraishi H, Hanada T. Zebrafish as a Useful Model System for Human Liver Disease. Cells 2023; 12:2246. [PMID: 37759472 PMCID: PMC10526867 DOI: 10.3390/cells12182246] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 08/31/2023] [Accepted: 09/08/2023] [Indexed: 09/29/2023] Open
Abstract
Liver diseases represent a significant global health challenge, thereby necessitating extensive research to understand their intricate complexities and to develop effective treatments. In this context, zebrafish (Danio rerio) have emerged as a valuable model organism for studying various aspects of liver disease. The zebrafish liver has striking similarities to the human liver in terms of structure, function, and regenerative capacity. Researchers have successfully induced liver damage in zebrafish using chemical toxins, genetic manipulation, and other methods, thereby allowing the study of disease mechanisms and the progression of liver disease. Zebrafish embryos or larvae, with their transparency and rapid development, provide a unique opportunity for high-throughput drug screening and the identification of potential therapeutics. This review highlights how research on zebrafish has provided valuable insights into the pathological mechanisms of human liver disease.
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Affiliation(s)
- Nobuyuki Shimizu
- Department of Cell Biology, Oita University Faculty of Medicine, Yufu 879-5593, Oita, Japan;
| | | | - Toshikatsu Hanada
- Department of Cell Biology, Oita University Faculty of Medicine, Yufu 879-5593, Oita, Japan;
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28
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Mi J, Liu KC, Andersson O. Decoding pancreatic endocrine cell differentiation and β cell regeneration in zebrafish. SCIENCE ADVANCES 2023; 9:eadf5142. [PMID: 37595046 PMCID: PMC10438462 DOI: 10.1126/sciadv.adf5142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 07/20/2023] [Indexed: 08/20/2023]
Abstract
In contrast to mice, zebrafish have an exceptional yet elusive ability to replenish lost β cells in adulthood. Understanding this framework would provide mechanistic insights for β cell regeneration, which may be extrapolated to humans. Here, we characterize a krt4-expressing ductal cell type, which is distinct from the putative Notch-responsive cells, showing neogenic competence and giving rise to the majority of endocrine cells during postembryonic development. Furthermore, we demonstrate a marked ductal remodeling process featuring a Notch-responsive to krt4+ luminal duct transformation during late development, indicating several origins of krt4+ ductal cells displaying similar transcriptional patterns. Single-cell transcriptomics upon a series of time points during β cell regeneration unveil a previously unrecognized dlb+ transitional endocrine precursor cell, distinct regulons, and a differentiation trajectory involving cellular shuffling through differentiation and dedifferentiation dynamics. These results establish a model of zebrafish pancreatic endocrinogenesis and highlight key values of zebrafish for translational studies of β cell regeneration.
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Affiliation(s)
| | - Ka-Cheuk Liu
- Department of Cell and Molecular Biology, Karolinska Institutet, 17177 Stockholm, Sweden
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29
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Walker LJ, Guevara C, Kawakami K, Granato M. Target-selective vertebrate motor axon regeneration depends on interaction with glial cells at a peripheral nerve plexus. PLoS Biol 2023; 21:e3002223. [PMID: 37590333 PMCID: PMC10464982 DOI: 10.1371/journal.pbio.3002223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 08/29/2023] [Accepted: 06/28/2023] [Indexed: 08/19/2023] Open
Abstract
A critical step for functional recovery from peripheral nerve injury is for regenerating axons to connect with their pre-injury targets. Reestablishing pre-injury target specificity is particularly challenging for limb-innervating axons as they encounter a plexus, a network where peripheral nerves converge, axons from different nerves intermingle, and then re-sort into target-specific bundles. Here, we examine this process at a plexus located at the base of the zebrafish pectoral fin, equivalent to tetrapod forelimbs. Using live cell imaging and sparse axon labeling, we find that regenerating motor axons from 3 nerves coalesce into the plexus. There, they intermingle and sort into distinct branches, and then navigate to their original muscle domains with high fidelity that restores functionality. We demonstrate that this regeneration process includes selective retraction of mistargeted axons, suggesting active correction mechanisms. Moreover, we find that Schwann cells are enriched and associate with axons at the plexus, and that Schwann cell ablation during regeneration causes profound axonal mistargeting. Our data provide the first real-time account of regenerating vertebrate motor axons navigating a nerve plexus and reveal a previously unappreciated role for Schwann cells to promote axon sorting at a plexus during regeneration.
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Affiliation(s)
- Lauren J. Walker
- Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Camilo Guevara
- Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Koichi Kawakami
- Laboratory of Molecular and Developmental Biology, National Institute of Genetics, and Department of Genetics, The Graduate University for Advanced Studies (SOKENDAI), Mishima, Shizuoka, Japan
| | - Michael Granato
- Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
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30
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Deng Y, He Y, Xu J, He H, Li G. Heterogeneity and Functional Analysis of Cardiac Fibroblasts in Heart Development. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.07.30.551164. [PMID: 37577541 PMCID: PMC10418062 DOI: 10.1101/2023.07.30.551164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/15/2023]
Abstract
Background As one of the major cell types in the heart, fibroblasts play critical roles in multiple biological processes. Cardiac fibroblasts are known to develop from multiple sources, but their transcriptional profiles have not been systematically compared. Furthermore, while the function of a few genes in cardiac fibroblasts has been studied, the overall function of fibroblasts as a cell type remains uninvestigated. Methods Single-cell mRNA sequencing (scRNA-seq) and bioinformatics approaches were used to analyze the genome-wide genes expression and extracellular matrix genes expression in fibroblasts, as well as the ligand-receptor interactions between fibroblasts and cardiomyocytes. Single molecular in situ hybridization was employed to analyze the expression pattern of fibroblast subpopulation-specific genes. The Diphtheria toxin fragment A (DTA) system was utilized to ablate fibroblasts at each developmental phase. Results Using RNA staining of Col1a1 at different stages, we grouped cardiac fibroblasts into four developmental phases. Through the analysis of scRNA-seq profiles of fibroblasts at 18 stages from two mouse strains, we identified significant heterogeneity, preserving lineage gene expression in their precursor cells. Within the main fibroblast population, we found differential expressions of Wt1, Tbx18, and Aldh1a2 genes in various cell clusters. Lineage tracing studies showed Wt1- and Tbx18-positive fibroblasts originated from respective epicardial cells. Furthermore, using a conditional DTA system-based elimination, we identified the crucial role of fibroblasts in early embryonic and heart growth, but not in neonatal heart growth. Additionally, we identified the zone- and stage-associated expression of extracellular matrix genes and fibroblast-cardiomyocyte ligand-receptor interactions. This comprehensive understanding sheds light on fibroblast function in heart development. Conclusion We observed cardiac fibroblast heterogeneity at embryonic and neonatal stages, with preserved lineage gene expression. Ablation studies revealed their distinct roles during development, likely influenced by varying extracellular matrix genes and ligand-receptor interactions at different stages.
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31
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Krylov A, Yu S, Veen K, Newton A, Ye A, Qin H, He J, Jusuf PR. Heterogeneity in quiescent Müller glia in the uninjured zebrafish retina drive differential responses following photoreceptor ablation. Front Mol Neurosci 2023; 16:1087136. [PMID: 37575968 PMCID: PMC10413128 DOI: 10.3389/fnmol.2023.1087136] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Accepted: 06/23/2023] [Indexed: 08/15/2023] Open
Abstract
Introduction Loss of neurons in the neural retina is a leading cause of vision loss. While humans do not possess the capacity for retinal regeneration, zebrafish can achieve this through activation of resident Müller glia. Remarkably, despite the presence of Müller glia in humans and other mammalian vertebrates, these cells lack an intrinsic ability to contribute to regeneration. Upon activation, zebrafish Müller glia can adopt a stem cell-like state, undergo proliferation and generate new neurons. However, the underlying molecular mechanisms of this activation subsequent retinal regeneration remains unclear. Methods/Results To address this, we performed single-cell RNA sequencing (scRNA-seq) and report remarkable heterogeneity in gene expression within quiescent Müller glia across distinct dorsal, central and ventral retina pools of such cells. Next, we utilized a genetically driven, chemically inducible nitroreductase approach to study Müller glia activation following selective ablation of three distinct photoreceptor subtypes: long wavelength sensitive cones, short wavelength sensitive cones, and rods. There, our data revealed that a region-specific bias in activation of Müller glia exists in the zebrafish retina, and this is independent of the distribution of the ablated cell type across retinal regions. Notably, gene ontology analysis revealed that injury-responsive dorsal and central Müller glia express genes related to dorsal/ventral pattern formation, growth factor activity, and regulation of developmental process. Through scRNA-seq analysis, we identify a shared genetic program underlying initial Müller glia activation and cell cycle entry, followed by differences that drive the fate of regenerating neurons. We observed an initial expression of AP-1 and injury-responsive transcription factors, followed by genes involved in Notch signaling, ribosome biogenesis and gliogenesis, and finally expression of cell cycle, chromatin remodeling and microtubule-associated genes. Discussion Taken together, our findings document the regional specificity of gene expression within quiescent Müller glia and demonstrate unique Müller glia activation and regeneration features following neural ablation. These findings will improve our understanding of the molecular pathways relevant to neural regeneration in the retina.
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Affiliation(s)
- Aaron Krylov
- School of BioSciences, University of Melbourne, Parkville, VIC, Australia
| | - Shuguang Yu
- State Key Laboratory of Neuroscience, CAS Center for Excellence in Brain Science and Intelligence Technology, Institute of Neuroscience, Chinese Academy of Sciences, Shanghai, China
| | - Kellie Veen
- School of BioSciences, University of Melbourne, Parkville, VIC, Australia
| | - Axel Newton
- School of BioSciences, University of Melbourne, Parkville, VIC, Australia
| | - Aojun Ye
- National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Huiwen Qin
- National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Jie He
- State Key Laboratory of Neuroscience, CAS Center for Excellence in Brain Science and Intelligence Technology, Institute of Neuroscience, Chinese Academy of Sciences, Shanghai, China
| | - Patricia R. Jusuf
- School of BioSciences, University of Melbourne, Parkville, VIC, Australia
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Bowman RL, Wang D, Eom DS. A macrophage subpopulation promotes airineme-mediated intercellular communication in a matrix metalloproteinase-9 dependent manner. Cell Rep 2023; 42:112818. [PMID: 37454294 PMCID: PMC10530396 DOI: 10.1016/j.celrep.2023.112818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 06/05/2023] [Accepted: 06/30/2023] [Indexed: 07/18/2023] Open
Abstract
Tissue-resident macrophages are heterogeneous and perform location-dependent functions. Skin resident macrophages play intriguing roles in long-distance intercellular signaling by mediating cellular protrusions called airinemes in zebrafish. These macrophages relay signaling molecules containing airineme vesicles between pigment cells, and their absence disrupts airineme-mediated signaling and pigment pattern formation. It is unknown if the same macrophages control both these signaling and typical immune functions or if a separate subpopulation functions in intercellular communication. With high-resolution imaging and genetic ablation approaches, we identify a macrophage subpopulation responsible for airineme-mediated signaling. These seem to be distinct from conventional skin-resident macrophages by their ameboid morphology and faster or expansive migratory behaviors. They resemble ectoderm-derived macrophages termed metaphocytes. Metaphocyte ablation markedly decreases airineme extension and signaling. In addition, these ameboid/metaphocytes require matrix metalloproteinase-9 for their migration and airineme-mediated signaling. These results reveal a macrophage subpopulation with specialized functions in airineme-mediated signaling, which may play roles in other aspects of intercellular communication.
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Affiliation(s)
- Raquel Lynn Bowman
- Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA 92697, USA
| | - Daoqin Wang
- Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA 92697, USA
| | - Dae Seok Eom
- Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA 92697, USA.
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Lee MS, Han HJ, Choi TI, Lee KH, Baasankhuu A, Kim HT, Kim CH. IFT46 gene promoter-driven ciliopathy disease model in zebrafish. Front Cell Dev Biol 2023; 11:1200599. [PMID: 37363725 PMCID: PMC10285392 DOI: 10.3389/fcell.2023.1200599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 05/26/2023] [Indexed: 06/28/2023] Open
Abstract
Ciliopathies are human genetic disorders caused by abnormal formation and dysfunction of cellular cilia. Cilia are microtubule-based organelles that project into the extracellular space and transduce molecular and chemical signals from the extracellular environment or neighboring cells. Intraflagellar transport (IFT) proteins are required for the assembly and maintenance of cilia by transporting proteins along the axoneme which consists of complexes A and B. IFT46, a core IFT-B protein complex, is required for cilium formation and maintenance during vertebrate embryonic development. Here, we introduce transgenic zebrafish lines under the control of ciliated cell-specific IFT46 promoter to recapitulate human ciliopathy-like phenotypes. We generated a Tg(IFT46:GAL4-VP16) line to temporo-spatially control the expression of effectors including fluorescent reporters or nitroreductase based on the GAL4/UAS system, which expresses GAL4-VP16 chimeric transcription factors in most ciliated tissues during embryonic development. To analyze the function of IFT46-expressing ciliated cells during zebrafish development, we generated the Tg(IFT46:GAL4-VP16;UAS;nfsb-mCherry) line, a ciliated cell-specific injury model induced by nitroreductase (NTR)/metrodinazole (MTZ). Conditionally, controlled ablation of ciliated cells in transgenic animals exhibited ciliopathy-like phenotypes including cystic kidneys and pericardial and periorbital edema. Altogether, we established a zebrafish NTR/MTZ-mediated ciliated cell injury model that recapitulates ciliopathy-like phenotypes and may be a vertebrate animal model to further investigate the etiology and therapeutic approaches to human ciliopathies.
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Affiliation(s)
- Mi-Sun Lee
- Department of Biology, Chungnam National University, Daejeon, Republic of Korea
- Michigan Neuroscience Institute (MNI), University of Michigan, Ann Arbor, MI, United States
| | - Hye-Jeong Han
- Soonchunhyang Institute of Medi-Bio Science (SIMS), Soonchunhyang University, Cheonan-Si, Republic of Korea
- Department of Integrated Biomedical Science, Soonchunhyang University, Cheonan-Si, Republic of Korea
| | - Tae-Ik Choi
- Department of Biology, Chungnam National University, Daejeon, Republic of Korea
| | - Kang-Han Lee
- Department of Biology, Chungnam National University, Daejeon, Republic of Korea
| | - Amartuvshin Baasankhuu
- Soonchunhyang Institute of Medi-Bio Science (SIMS), Soonchunhyang University, Cheonan-Si, Republic of Korea
- Department of Integrated Biomedical Science, Soonchunhyang University, Cheonan-Si, Republic of Korea
| | - Hyun-Taek Kim
- Soonchunhyang Institute of Medi-Bio Science (SIMS), Soonchunhyang University, Cheonan-Si, Republic of Korea
- Department of Integrated Biomedical Science, Soonchunhyang University, Cheonan-Si, Republic of Korea
| | - Cheol-Hee Kim
- Department of Biology, Chungnam National University, Daejeon, Republic of Korea
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Chen Y, Li P, Chen T, Liu H, Wang P, Dai X, Zou Q. Ronidazole Is a Superior Prodrug to Metronidazole for Nitroreductase-Mediated Hepatocytes Ablation in Zebrafish Larvae. Zebrafish 2023. [PMID: 37229597 DOI: 10.1089/zeb.2022.0066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023] Open
Abstract
The liver plays a very important role in physiological processes of the human body. Liver regeneration has developed into an important area of study in liver disease. The Mtz (metronidazole)/NTR (nitroreductase)-mediated cell ablation system has been widely used to study the processes and mechanisms of liver injury and regeneration. However, high concentrations and toxic side effects of Mtz severely limit the application of the Mtz/NTR system. Therefore, screening new analogs to replace Mtz has become an important means to optimize the NTR ablation system. In this study, we screened five Mtz analogs including furazolidone, ronidazole, ornidazole, nitromide, and tinidazole. We compared their toxicity on the transgenic fish line Tg(fabp10a: mCherry-NTR) and their specific ablation ability on liver cells. The results showed that Ronidazole at a lower concentration (2 mM) had the same ability to ablate liver cells comparable with that of Mtz (10 mM), almost without toxic side effects on juvenile fish. Further study found that zebrafish hepatocyte injury caused by the Ronidazole/NTR system achieved the same liver regenerative effect as the Mtz/NTR system. The above results show that Ronidazole can replace Mtz with NTR to achieve superior damage and ablation effects in zebrafish liver.
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Affiliation(s)
- Yuhang Chen
- Schools of Laboratory Medicine, Chengdu Medical College, Chengdu, China
| | - Peipei Li
- Schools of Laboratory Medicine, Chengdu Medical College, Chengdu, China
| | - Ting Chen
- Schools of Biosciences and Technology, Chengdu Medical College, Chengdu, China
| | - Hanjie Liu
- Schools of Laboratory Medicine, Chengdu Medical College, Chengdu, China
| | - Peijian Wang
- Department of Cardiology, The First Affiliated Hospital of Chengdu Medical College, Chengdu, China
- Key Laboratory of Aging and Vascular Homeostasis of Sichuan Higher Education Institutes, Chengdu, China
| | - Xiaozhen Dai
- Schools of Biosciences and Technology, Chengdu Medical College, Chengdu, China
| | - Qingliang Zou
- Department of Cardiology, The First Affiliated Hospital of Chengdu Medical College, Chengdu, China
- Key Laboratory of Aging and Vascular Homeostasis of Sichuan Higher Education Institutes, Chengdu, China
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Zhou L, McAdow AR, Yamada H, Burris B, Klatt Shaw D, Oonk K, Poss KD, Mokalled MH. Progenitor-derived glia are required for spinal cord regeneration in zebrafish. Development 2023; 150:dev201162. [PMID: 37213080 PMCID: PMC10233714 DOI: 10.1242/dev.201162] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 04/26/2023] [Indexed: 05/10/2023]
Abstract
Unlike mammals, adult zebrafish undergo spontaneous recovery after major spinal cord injury. Whereas reactive gliosis presents a roadblock for mammalian spinal cord repair, glial cells in zebrafish elicit pro-regenerative bridging functions after injury. Here, we perform genetic lineage tracing, assessment of regulatory sequences and inducible cell ablation to define mechanisms that direct the molecular and cellular responses of glial cells after spinal cord injury in adult zebrafish. Using a newly generated CreERT2 transgenic line, we show that the cells directing expression of the bridging glial marker ctgfa give rise to regenerating glia after injury, with negligible contribution to either neuronal or oligodendrocyte lineages. A 1 kb sequence upstream of the ctgfa gene was sufficient to direct expression in early bridging glia after injury. Finally, ablation of ctgfa-expressing cells using a transgenic nitroreductase strategy impaired glial bridging and recovery of swim behavior after injury. This study identifies key regulatory features, cellular progeny, and requirements of glial cells during innate spinal cord regeneration.
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Affiliation(s)
- Lili Zhou
- Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO 63110, USA
- Center of Regenerative Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Anthony R. McAdow
- Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO 63110, USA
- Center of Regenerative Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Hunter Yamada
- Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO 63110, USA
- Center of Regenerative Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Brooke Burris
- Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO 63110, USA
- Center of Regenerative Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Dana Klatt Shaw
- Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO 63110, USA
- Center of Regenerative Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Kelsey Oonk
- Duke Regeneration Center, Department of Cell Biology, Duke University Medical Center, Durham, NC 27710, USA
| | - Kenneth D. Poss
- Duke Regeneration Center, Department of Cell Biology, Duke University Medical Center, Durham, NC 27710, USA
| | - Mayssa H. Mokalled
- Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO 63110, USA
- Center of Regenerative Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
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36
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Pogoda HM, Riedl-Quinkertz I, Hammerschmidt M. Direct BMP signaling to chordoblasts is required for the initiation of segmented notochord sheath mineralization in zebrafish vertebral column development. Front Endocrinol (Lausanne) 2023; 14:1107339. [PMID: 37223044 PMCID: PMC10200950 DOI: 10.3389/fendo.2023.1107339] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Accepted: 03/15/2023] [Indexed: 05/25/2023] Open
Abstract
The vertebral column, with the centra as its iteratively arranged building blocks, represents the anatomical key feature of the vertebrate phylum. In contrast to amniotes, where vertebrae are formed from chondrocytes and osteoblasts deriving from the segmentally organized neural crest or paraxial sclerotome, teleost vertebral column development is initiated by chordoblasts of the primarily unsegmented axial notochord, while sclerotomal cells only contribute to later steps of vertebrae formation. Yet, for both mammalian and teleostean model systems, unrestricted signaling by Bone Morphogenetic Proteins (BMPs) or retinoic acid (RA) has been reported to cause fusions of vertebral elements, while the interplay of the two signaling processes and their exact cellular targets remain largely unknown. Here, we address this interplay in zebrafish, identifying BMPs as potent and indispensable factors that, as formerly shown for RA, directly signal to notochord epithelial cells/chordoblasts to promote entpd5a expression and thereby metameric notochord sheath mineralization. In contrast to RA, however, which promotes sheath mineralization at the expense of further collagen secretion and sheath formation, BMP defines an earlier transitory stage of chordoblasts, characterized by sustained matrix production/col2a1 expression and concomitant matrix mineralization/entpd5a expression. BMP-RA epistasis analyses further indicate that RA can only affect chordoblasts and their further progression to merely mineralizing cells after they have received BMP signals to enter the transitory col2a1/entpd5a double-positive stage. This way, both signals ensure consecutively for proper mineralization of the notochord sheath within segmented sections along its anteroposterior axis. Our work sheds further light onto the molecular mechanisms that orchestrate early steps of vertebral column segmentation in teleosts. Similarities and differences to BMP's working mechanisms during mammalian vertebral column formation and the pathomechanisms underlying human bone diseases such as Fibrodysplasia Ossificans Progressiva (FOP) caused by constitutively active BMP signaling are discussed.
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Affiliation(s)
- Hans-Martin Pogoda
- Institute of Zoology – Developmental Biology, University of Cologne, Cologne, Germany
| | - Iris Riedl-Quinkertz
- Institute of Zoology – Developmental Biology, University of Cologne, Cologne, Germany
| | - Matthias Hammerschmidt
- Institute of Zoology – Developmental Biology, University of Cologne, Cologne, Germany
- Cluster of Excellence, Cellular Stress Responses in Aging-Associated Diseases (CECAD) Cluster of Excellence, University of Cologne, Cologne, Germany
- Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany
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Zhao C, Li Y, Tang J, Zhou Q, Lin X, Wen Z. Metaphocytes are IL-22BP-producing cells regulated by ETS transcription factor Spic and essential for zebrafish barrier immunity. Cell Rep 2023; 42:112483. [PMID: 37148242 DOI: 10.1016/j.celrep.2023.112483] [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: 10/06/2022] [Revised: 03/03/2023] [Accepted: 04/20/2023] [Indexed: 05/08/2023] Open
Abstract
Metaphocytes are tissue-resident macrophage (TRM)/dendritic cell (DC)-like cells of non-hematopoietic origin in zebrafish barrier tissues. One remarkable property of metaphocytes is their ability to capture soluble antigens from the external environment via transepithelial protrusions, a unique function manifested by specialized subpopulations of the TRMs/DCs in mammal barrier tissues. Yet, how metaphocytes acquire myeloid-like cell properties from non-hematopoietic precursors and how they regulate barrier immunity remains unknown. Here, we show that metaphocytes are in situ generated from local progenitors guided by the ETS transcription factor Spic, the deficiency of which results in the absence of metaphocytes. We further document that metaphocytes are the major IL-22BP-producing cells, and the depletion of metaphocytes causes dysregulated barrier immunity that resembles the phenotype of IL-22BP-deficient mice. These findings reveal the ontogeny, development, and function of metaphocytes in zebrafish, which facilitates our understanding of the nature and function of the mammalian TRM/DC counterparts.
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Affiliation(s)
- Changlong Zhao
- Division of Life Science, State Key Laboratory of Molecular Neuroscience, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
| | - Yunbo Li
- Division of Life Science, State Key Laboratory of Molecular Neuroscience, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
| | - Jinlin Tang
- Division of Life Science, State Key Laboratory of Molecular Neuroscience, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
| | - Qiuxia Zhou
- Division of Life Science, State Key Laboratory of Molecular Neuroscience, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
| | - Xi Lin
- Brigham and Women's Hospital, Harvard Medical School, Boston, MS 02115, USA
| | - Zilong Wen
- Division of Life Science, State Key Laboratory of Molecular Neuroscience, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China; Greater Bay Biomedical Innocenter, Shenzhen Bay Laboratory, Shenzhen 518055, China; Shenzhen Key Laboratory for Neuronal Structural Biology, Biomedical Research Institute, Shenzhen Peking University-Hong Kong University of Science and Technology Medical Center, Shenzhen, Guangdong 518036, China; Department of Immunology and Microbiology, School of Life Science, Southern University of Science and Technology, Shenzhen 518055, China.
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38
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Boezio GLM, Zhao S, Gollin J, Priya R, Mansingh S, Guenther S, Fukuda N, Gunawan F, Stainier DYR. The developing epicardium regulates cardiac chamber morphogenesis by promoting cardiomyocyte growth. Dis Model Mech 2023; 16:dmm049571. [PMID: 36172839 PMCID: PMC9612869 DOI: 10.1242/dmm.049571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 09/13/2022] [Indexed: 11/20/2022] Open
Abstract
The epicardium, the outermost layer of the heart, is an important regulator of cardiac regeneration. However, a detailed understanding of the crosstalk between the epicardium and myocardium during development requires further investigation. Here, we generated three models of epicardial impairment in zebrafish by mutating the transcription factor genes tcf21 and wt1a, and ablating tcf21+ epicardial cells. Notably, all three epicardial impairment models exhibited smaller ventricles. We identified the initial cause of this phenotype as defective cardiomyocyte growth, resulting in reduced cell surface and volume. This failure of cardiomyocyte growth was followed by decreased proliferation and increased abluminal extrusion. By temporally manipulating its ablation, we show that the epicardium is required to support cardiomyocyte growth mainly during early cardiac morphogenesis. By transcriptomic profiling of sorted epicardial cells, we identified reduced expression of FGF and VEGF ligand genes in tcf21-/- hearts, and pharmacological inhibition of these signaling pathways in wild type partially recapitulated the ventricular growth defects. Taken together, these data reveal distinct roles of the epicardium during cardiac morphogenesis and signaling pathways underlying epicardial-myocardial crosstalk.
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Affiliation(s)
- Giulia L. M. Boezio
- Department of Developmental Genetics, Max Planck Institute for Heart and Lung Research, 61231 Bad Nauheim, Germany
- DZHK German Centre for Cardiovascular Research, Partner Site Rhine-Main, 61231 Bad Nauheim, Germany
- Cardio-Pulmonary Institute, Aulweg 130, 35392 Giessen, Germany
| | - Shengnan Zhao
- Department of Developmental Genetics, Max Planck Institute for Heart and Lung Research, 61231 Bad Nauheim, Germany
| | - Josephine Gollin
- Department of Developmental Genetics, Max Planck Institute for Heart and Lung Research, 61231 Bad Nauheim, Germany
| | - Rashmi Priya
- Department of Developmental Genetics, Max Planck Institute for Heart and Lung Research, 61231 Bad Nauheim, Germany
- Cardio-Pulmonary Institute, Aulweg 130, 35392 Giessen, Germany
| | - Shivani Mansingh
- Department of Developmental Genetics, Max Planck Institute for Heart and Lung Research, 61231 Bad Nauheim, Germany
| | - Stefan Guenther
- Cardio-Pulmonary Institute, Aulweg 130, 35392 Giessen, Germany
- Bioinformatics and Deep Sequencing Platform, Max Planck Institute for Heart and Lung Research, 61231 Bad Nauheim, Germany
| | - Nana Fukuda
- Department of Developmental Genetics, Max Planck Institute for Heart and Lung Research, 61231 Bad Nauheim, Germany
| | - Felix Gunawan
- Department of Developmental Genetics, Max Planck Institute for Heart and Lung Research, 61231 Bad Nauheim, Germany
- DZHK German Centre for Cardiovascular Research, Partner Site Rhine-Main, 61231 Bad Nauheim, Germany
- Cardio-Pulmonary Institute, Aulweg 130, 35392 Giessen, Germany
| | - Didier Y. R. Stainier
- Department of Developmental Genetics, Max Planck Institute for Heart and Lung Research, 61231 Bad Nauheim, Germany
- DZHK German Centre for Cardiovascular Research, Partner Site Rhine-Main, 61231 Bad Nauheim, Germany
- Cardio-Pulmonary Institute, Aulweg 130, 35392 Giessen, Germany
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Li H, Weng W, Zhou B. Perfect duet: Dual recombinases improve genetic resolution. Cell Prolif 2023; 56:e13446. [PMID: 37060165 PMCID: PMC10212704 DOI: 10.1111/cpr.13446] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 02/25/2023] [Accepted: 03/01/2023] [Indexed: 04/16/2023] Open
Abstract
As a powerful genetic tool, site-specific recombinases (SSRs) have been widely used in genomic manipulation to elucidate cell fate plasticity in vivo, advancing research in stem cell and regeneration medicine. However, the low resolution of conventional single-recombinase-mediated lineage tracing strategies, which rely heavily on the specificity of one marker gene, has led to controversial conclusions in many scientific questions. Therefore, different SSRs systems are combined to improve the accuracy of lineage tracing. Here we review the recent advances in dual-recombinase-mediated genetic approaches, including the development of novel genetic recombination technologies and their applications in cell differentiation, proliferation, and genetic manipulation. In comparison with the single-recombinase system, we also discuss the advantages of dual-genetic strategies in solving scientific issues as well as their technical limitations.
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Affiliation(s)
- Hongxin Li
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of SciencesUniversity of Chinese Academy of SciencesShanghaiChina
| | - Wendong Weng
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of SciencesUniversity of Chinese Academy of SciencesShanghaiChina
| | - Bin Zhou
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of SciencesUniversity of Chinese Academy of SciencesShanghaiChina
- Key Laboratory of Systems Health Science of Zhejiang ProvinceSchool of Life Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of SciencesHangzhouChina
- School of Life Science and TechnologyShanghaiTech UniversityShanghaiChina
- New Cornerstone Science LaboratoryShenzhenChina
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40
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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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41
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Lee SH, So J, Shin D. Hepatocyte-to-cholangiocyte conversion occurs through transdifferentiation independently of proliferation in zebrafish. Hepatology 2023; 77:1198-1210. [PMID: 36626626 PMCID: PMC10023500 DOI: 10.1097/hep.0000000000000016] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Accepted: 10/10/2022] [Indexed: 01/12/2023]
Abstract
BACKGROUND AND AIMS Injury to biliary epithelial cells (BECs) lining the hepatic bile ducts leads to cholestatic liver diseases. Upon severe biliary damage, hepatocytes can convert to BECs, thereby contributing to liver recovery. Given a potential of augmenting this hepatocyte-to-BEC conversion as a therapeutic option for cholestatic liver diseases, it will be important to thoroughly understand the cellular and molecular mechanisms of the conversion process. APPROACH AND RESULTS Towards this aim, we have established a zebrafish model for hepatocyte-to-BEC conversion by employing Tg(fabp10a:CFP-NTR) zebrafish with a temporal inhibition of Notch signaling during regeneration. Cre/loxP-mediated permanent and H2B-mCherry-mediated short-term lineage tracing revealed that in the model, all BECs originate from hepatocytes. During the conversion, BEC markers are sequentially induced in the order of Sox9b, Yap/Taz, Notch activity/ epcam , and Alcama/ krt18 ; the expression of the hepatocyte marker Bhmt disappears between the Sox9b and Yap/Taz induction. Importantly, live time-lapse imaging unambiguously revealed transdifferentiation of hepatocytes into BECs: hepatocytes convert to BECs without transitioning through a proliferative intermediate state. In addition, using compounds and transgenic and mutant lines that modulate Notch and Yap signaling, we found that both Notch and Yap signaling are required for the conversion even in Notch- and Yap-overactivating settings. CONCLUSIONS Hepatocyte-to-BEC conversion occurs through transdifferentiation independently of proliferation, and Notch and Yap signaling control the process in parallel with a mutually positive interaction. The new zebrafish model will further contribute to a thorough understanding of the mechanisms of the conversion process.
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Affiliation(s)
- Seung-Hoon Lee
- Department of Developmental Biology, McGowan Institute for Regenerative Medicine, Pittsburgh Liver Research Center, University of Pittsburgh, Pittsburgh, PA 15260, USA
| | - Juhoon So
- Department of Developmental Biology, McGowan Institute for Regenerative Medicine, Pittsburgh Liver Research Center, University of Pittsburgh, Pittsburgh, PA 15260, USA
| | - Donghun Shin
- Department of Developmental Biology, McGowan Institute for Regenerative Medicine, Pittsburgh Liver Research Center, University of Pittsburgh, Pittsburgh, PA 15260, USA
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42
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Ma RC, Kocha KM, Méndez-Olivos EE, Ruel TD, Huang P. Origin and diversification of fibroblasts from the sclerotome in zebrafish. Dev Biol 2023; 498:35-48. [PMID: 36933633 DOI: 10.1016/j.ydbio.2023.03.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 02/13/2023] [Accepted: 03/14/2023] [Indexed: 03/18/2023]
Abstract
Fibroblasts play an important role in maintaining tissue integrity by secreting components of the extracellular matrix and initiating response to injury. Although the function of fibroblasts has been extensively studied in adults, the embryonic origin and diversification of different fibroblast subtypes during development remain largely unexplored. Using zebrafish as a model, we show that the sclerotome, a sub-compartment of the somite, is the embryonic source of multiple fibroblast subtypes including tenocytes (tendon fibroblasts), blood vessel associated fibroblasts, fin mesenchymal cells, and interstitial fibroblasts. High-resolution imaging shows that different fibroblast subtypes occupy unique anatomical locations with distinct morphologies. Long-term Cre-mediated lineage tracing reveals that the sclerotome also contributes to cells closely associated with the axial skeleton. Ablation of sclerotome progenitors results in extensive skeletal defects. Using photoconversion-based cell lineage analysis, we find that sclerotome progenitors at different dorsal-ventral and anterior-posterior positions display distinct differentiation potentials. Single-cell clonal analysis combined with in vivo imaging suggests that the sclerotome mostly contains unipotent and bipotent progenitors prior to cell migration, and the fate of their daughter cells is biased by their migration paths and relative positions. Together, our work demonstrates that the sclerotome is the embryonic source of trunk fibroblasts as well as the axial skeleton, and local signals likely contribute to the diversification of distinct fibroblast subtypes.
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Affiliation(s)
- Roger C Ma
- Department of Biochemistry and Molecular Biology, Cumming School of Medicine, Alberta Children's Hospital Research Institute, University of Calgary, 3330 Hospital Drive, Calgary, Alberta, T2N 4N1, Canada
| | - Katrinka M Kocha
- Department of Biochemistry and Molecular Biology, Cumming School of Medicine, Alberta Children's Hospital Research Institute, University of Calgary, 3330 Hospital Drive, Calgary, Alberta, T2N 4N1, Canada
| | - Emilio E Méndez-Olivos
- Department of Biochemistry and Molecular Biology, Cumming School of Medicine, Alberta Children's Hospital Research Institute, University of Calgary, 3330 Hospital Drive, Calgary, Alberta, T2N 4N1, Canada
| | - Tyler D Ruel
- Department of Biochemistry and Molecular Biology, Cumming School of Medicine, Alberta Children's Hospital Research Institute, University of Calgary, 3330 Hospital Drive, Calgary, Alberta, T2N 4N1, Canada
| | - Peng Huang
- Department of Biochemistry and Molecular Biology, Cumming School of Medicine, Alberta Children's Hospital Research Institute, University of Calgary, 3330 Hospital Drive, Calgary, Alberta, T2N 4N1, Canada.
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43
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Liu H, Yue Y, Xu Z, Guo L, Wu C, Zhang D, Luo L, Huang W, Chen H, Yang D. mTORC1 signaling pathway regulates tooth repair. Int J Oral Sci 2023; 15:14. [PMID: 36927863 PMCID: PMC10020452 DOI: 10.1038/s41368-023-00218-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 01/12/2023] [Accepted: 01/26/2023] [Indexed: 03/18/2023] Open
Abstract
Tooth germ injury can lead to abnormal tooth development and even tooth loss, affecting various aspects of the stomatognathic system including form, function, and appearance. However, the research about tooth germ injury model on cellular and molecule mechanism of tooth germ repair is still very limited. Therefore, it is of great importance for the prevention and treatment of tooth germ injury to study the important mechanism of tooth germ repair by a tooth germ injury model. Here, we constructed a Tg(dlx2b:Dendra2-NTR) transgenic line that labeled tooth germ specifically. Taking advantage of the NTR/Mtz system, the dlx2b+ tooth germ cells were depleted by Mtz effectively. The process of tooth germ repair was evaluated by antibody staining, in situ hybridization, EdU staining and alizarin red staining. The severely injured tooth germ was repaired in several days after Mtz treatment was stopped. In the early stage of tooth germ repair, the expression of phosphorylated 4E-BP1 was increased, indicating that mTORC1 is activated. Inhibition of mTORC1 signaling in vitro or knockdown of mTORC1 signaling in vivo could inhibit the repair of injured tooth germ. Normally, mouse incisors were repaired after damage, but inhibition/promotion of mTORC1 signaling inhibited/promoted this repair progress. Overall, we are the first to construct a stable and repeatable repair model of severe tooth germ injury, and our results reveal that mTORC1 signaling plays a crucial role during tooth germ repair, providing a potential target for clinical treatment of tooth germ injury.
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Affiliation(s)
- Honghong Liu
- Department of Endodontics, Stomatological Hospital of Chongqing Medical University, Chongqing, China.,Stomatological Hospital of Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China.,Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Yu Yue
- Department of Endodontics, Stomatological Hospital of Chongqing Medical University, Chongqing, China.,Stomatological Hospital of Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China.,Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Zhiyun Xu
- Department of Endodontics, Stomatological Hospital of Chongqing Medical University, Chongqing, China.,Stomatological Hospital of Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China.,Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Li Guo
- Department of Endodontics, Stomatological Hospital of Chongqing Medical University, Chongqing, China.,Stomatological Hospital of Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China.,Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Chuan Wu
- Institute of Developmental Biology and Regenerative Medicine, Southwest University, Chongqing, China
| | - Da Zhang
- Institute of Developmental Biology and Regenerative Medicine, Southwest University, Chongqing, China
| | - Lingfei Luo
- Institute of Developmental Biology and Regenerative Medicine, Southwest University, Chongqing, China
| | - Wenming Huang
- Department of Endodontics, Stomatological Hospital of Chongqing Medical University, Chongqing, China.,Stomatological Hospital of Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China.,Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Hong Chen
- Department of Endodontics, Stomatological Hospital of Chongqing Medical University, Chongqing, China.,Stomatological Hospital of Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China.,Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Deqin Yang
- Department of Endodontics, Stomatological Hospital of Chongqing Medical University, Chongqing, China. .,Stomatological Hospital of Chongqing Medical University, Chongqing, China. .,Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China. .,Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China.
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44
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Lin CY, Yeh KY, Lai HH, Her GM. AgRP Neuron-Specific Ablation Represses Appetite, Energy Intake, and Somatic Growth in Larval Zebrafish. Biomedicines 2023; 11:biomedicines11020499. [PMID: 36831035 PMCID: PMC9953713 DOI: 10.3390/biomedicines11020499] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 02/01/2023] [Accepted: 02/06/2023] [Indexed: 02/11/2023] Open
Abstract
Neuronal circuits regulating appetite are dominated by arcuate nucleus neurons, which include appetite-promoting and -suppressing neurons that release the orexigenic neuropeptide agouti-related protein (AgRP) and anorexigenic neuropeptide pro-opiomelanocortin, respectively, to compete for melanocortin receptors to modulate feeding behavior. In this study, we expressed novel agrp promoters, including different lengths of the 5' flanking regions of the agrp gene (4749 bp) in the zebrafish genome. We used the agrp promoter to derive the enhanced green fluorescent protein (EGFP)-nitroreductase (NTR) fusion protein, allowing expression of the green fluorescence signal in the AgRP neurons. Then, we treated the transgenic zebrafish AgRP4.7NTR (Tg [agrp-EGFP-NTR]) with metronidazole to ablate the AgRP neurons in the larvae stage and observed a decline in their appetite and growth. The expression of most orexigenic and growth hormone/insulin-like growth factor axis genes decreased, whereas that of several anorexigenic genes increased. Our findings demonstrate that AgRP is a critical regulator of neuronal signaling for zebrafish appetite and energy intake control. Thus, AgRP4.7NTR can be used as a drug-screening platform for therapeutic targets to treat human appetite disorders, including obesity. Furthermore, the unique agrp promoter we identified can be a powerful tool for research on AgRP neurons, especially AgRP neuron-mediated pathways in the hypothalamus, and appetite.
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Affiliation(s)
- Chiu-Ya Lin
- Department of Bioscience and Biotechnology, National Taiwan Ocean University, Keelung City 202, Taiwan
- Institute of Biopharmaceutical Sciences, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
| | - Kun-Yun Yeh
- Division of Hemato-Oncology, Department of Internal Medicine, Chang Gung Memorial Hospital, Keelung City 204, Taiwan
| | - Hsin-Hung Lai
- Institute of Biopharmaceutical Sciences, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
| | - Guor Mour Her
- Institute of Biopharmaceutical Sciences, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
- Correspondence: ; Tel.: +886-2-2826-7000 (ext. 67990)
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Di-Iacovo N, Pieroni S, Piobbico D, Castelli M, Scopetti D, Ferracchiato S, Della-Fazia MA, Servillo G. Liver Regeneration and Immunity: A Tale to Tell. Int J Mol Sci 2023; 24:1176. [PMID: 36674692 PMCID: PMC9864482 DOI: 10.3390/ijms24021176] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 12/28/2022] [Accepted: 12/30/2022] [Indexed: 01/11/2023] Open
Abstract
The physiological importance of the liver is demonstrated by its unique and essential ability to regenerate following extensive injuries affecting its function. By regenerating, the liver reacts to hepatic damage and thus enables homeostasis to be restored. The aim of this review is to add new findings that integrate the regenerative pathway to the current knowledge. An optimal regeneration is achieved through the integration of two main pathways: IL-6/JAK/STAT3, which promotes hepatocyte proliferation, and PI3K/PDK1/Akt, which in turn enhances cell growth. Proliferation and cell growth are events that must be balanced during the three phases of the regenerative process: initiation, proliferation and termination. Achieving the correct liver/body weight ratio is ensured by several pathways as extracellular matrix signalling, apoptosis through caspase-3 activation, and molecules including transforming growth factor-beta, and cyclic adenosine monophosphate. The actors involved in the regenerative process are numerous and many of them are also pivotal players in both the immune and non-immune inflammatory process, that is observed in the early stages of hepatic regeneration. Balance of Th17/Treg is important in liver inflammatory process outcomes. Knowledge of liver regeneration will allow a more detailed characterisation of the molecular mechanisms that are crucial in the interplay between proliferation and inflammation.
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Affiliation(s)
- Nicola Di-Iacovo
- Department of Medicine and Surgery, University of Perugia, Piazzale L. Severi 1, 06129 Perugia, Italy
| | - Stefania Pieroni
- Department of Medicine and Surgery, University of Perugia, Piazzale L. Severi 1, 06129 Perugia, Italy
| | - Danilo Piobbico
- Department of Medicine and Surgery, University of Perugia, Piazzale L. Severi 1, 06129 Perugia, Italy
| | - Marilena Castelli
- Department of Medicine and Surgery, University of Perugia, Piazzale L. Severi 1, 06129 Perugia, Italy
| | - Damiano Scopetti
- Department of Medicine and Surgery, University of Perugia, Piazzale L. Severi 1, 06129 Perugia, Italy
| | - Simona Ferracchiato
- Department of Medicine and Surgery, University of Perugia, Piazzale L. Severi 1, 06129 Perugia, Italy
| | - Maria Agnese Della-Fazia
- Department of Medicine and Surgery, University of Perugia, Piazzale L. Severi 1, 06129 Perugia, Italy
| | - Giuseppe Servillo
- Department of Medicine and Surgery, University of Perugia, Piazzale L. Severi 1, 06129 Perugia, Italy
- Centro Universitario di Ricerca sulla Genomica Funzionale (C.U.R.Ge.F.), University of Perugia, 06123 Perugia, Italy
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Walker LJ, Guevara C, Kawakami K, Granato M. A glia cell dependent mechanism at a peripheral nerve plexus critical for target-selective axon regeneration. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.01.05.522786. [PMID: 36712008 PMCID: PMC9881934 DOI: 10.1101/2023.01.05.522786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
A critical step for functional recovery from peripheral nerve injury is for regenerating axons to connect with their pre-injury targets. Reestablishing pre-injury target specificity is particularly challenging for limb-innervating axons as they encounter a plexus, a network where peripheral nerves converge, axons from different nerves intermingle, and then re-sort into target-specific bundles. Here, we examine this process at a plexus located at the base of the zebrafish pectoral fin, equivalent to tetrapod forelimbs. Using live cell imaging and sparse axon labeling, we find that regenerating motor axons from three nerves coalesce into the plexus. There, they intermingle and sort into distinct branches, and then navigate to their original muscle domains with high fidelity that restores functionality. We demonstrate that this regeneration process includes selective retraction of mistargeted axons, suggesting active correction mechanisms. Moreover, we find that Schwann cells are enriched and associate with axons at the plexus, and that Schwann cell ablation during regeneration causes profound axonal mistargeting. Our data provide the first real time account of regenerating vertebrate motor axons navigating a nerve plexus and reveal a previously unappreciated role for Schwann cells to promote axon sorting at a plexus during regeneration.
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Affiliation(s)
- Lauren J Walker
- Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Camilo Guevara
- Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Koichi Kawakami
- Laboratory of Molecular and Developmental Biology, National Institute of Genetics, and Department of Genetics, The Graduate University for Advanced Studies (SOKENDAI), Mishima, Shizuoka 411-8540, Japan
| | - Michael Granato
- Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
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Forn-Cuní G, Welvaarts L, Stel FM, van den Hondel CJ, Arentshorst M, Ram AFJ, Meijer AH. Stimulating the autophagic-lysosomal axis enhances host defense against fungal infection in a zebrafish model of invasive Aspergillosis. Autophagy 2023; 19:324-337. [PMID: 35775203 PMCID: PMC9809955 DOI: 10.1080/15548627.2022.2090727] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
The increasing prevalence of antifungal-resistant human pathogenic fungi, particularly azole-resistant Aspergillus fumigatus, is a life-threatening challenge to the immunocompromised population. Autophagy-related processes such as LC3-associated phagocytosis have been shown to be activated in the host response against fungal infection, but their overall effect on host resistance remains uncertain. To analyze the relevance of these processes in vivo, we used a zebrafish animal model of invasive Aspergillosis. To confirm the validity of this model to test potential treatments for this disease, we confirmed that immunosuppressive treatments or neutropenia rendered zebrafish embryos more susceptible to A. fumigatus. We used GFP-Lc3 transgenic zebrafish to visualize the autophagy-related processes in innate immune phagocytes shortly after phagocytosis of A. fumigatus conidia, and found that both wild-type and melanin-deficient conidia elicited Lc3 recruitment. In macrophages, we observed GFP-Lc3 accumulation in puncta after phagocytosis, as well as short, rapid events of GFP-Lc3 decoration of single and multiple conidia-containing vesicles, while neutrophils covered single conidia-containing vesicles with bright and long-lasting GFP-Lc3 signal. Next, using genetic and pharmacological stimulation of three independent autophagy-inducing pathways, we showed that the antifungal autophagy response improves the host survival against A. fumigatus infection, but only in the presence of phagocytes. Therefore, we provide proof-of-concept that stimulating the (auto)phagolysosomal pathways is a promising approach to develop host-directed therapies against invasive Aspergillosis, and should be explored further either as adjunctive or stand-alone therapy for drug-resistant Aspergillus infections.Abbreviations: DMSO: dimethyl sulfoxide; HR: hazard ratio; HDT: host-directed therapy; Hpf: hours post fertilization; IA: invasive Aspergillosis; LAP: LC3-associated phagocytosis; MTZ: metronidazole; PTU: N-phenylthiourea; ROS: reactive oxygen species.
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Affiliation(s)
- G Forn-Cuní
- Institute of Biology Leiden, Leiden University, Leiden, The Netherlands,CONTACT G Forn-Cuní Institute of Biology Leiden, Leiden University, Einsteinweg 55, Leiden, The Netherlands
| | - L Welvaarts
- Institute of Biology Leiden, Leiden University, Leiden, The Netherlands
| | - FM Stel
- Institute of Biology Leiden, Leiden University, Leiden, The Netherlands
| | - CJ van den Hondel
- Institute of Biology Leiden, Leiden University, Leiden, The Netherlands
| | - M Arentshorst
- Institute of Biology Leiden, Leiden University, Leiden, The Netherlands
| | - AFJ Ram
- Institute of Biology Leiden, Leiden University, Leiden, The Netherlands
| | - AH Meijer
- Institute of Biology Leiden, Leiden University, Leiden, The Netherlands,AH Meijer Institute of Biology Leiden, Leiden University, Einsteinweg 55, 2333CC Leiden, The Netherlands
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Zou G, Park JI. Wnt signaling in liver regeneration, disease, and cancer. Clin Mol Hepatol 2023; 29:33-50. [PMID: 35785913 PMCID: PMC9845677 DOI: 10.3350/cmh.2022.0058] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 06/30/2022] [Indexed: 02/02/2023] Open
Abstract
The liver exhibits the highest recovery rate from acute injuries. However, in chronic liver disease, the long-term loss of hepatocytes often leads to adverse consequences such as fibrosis, cirrhosis, and liver cancer. The Wnt signaling plays a pivotal role in both liver regeneration and tumorigenesis. Therefore, manipulating the Wnt signaling has become an attractive approach to treating liver disease, including cancer. Nonetheless, given the crucial roles of Wnt signaling in physiological processes, blocking Wnt signaling can also cause several adverse effects. Recent studies have identified cancer-specific regulators of Wnt signaling, which would overcome the limitation of Wnt signaling target approaches. In this review, we discussed the role of Wnt signaling in liver regeneration, precancerous lesion, and liver cancer. Furthermore, we summarized the basic and clinical approaches of Wnt signaling blockade and proposed the therapeutic prospects of cancer-specific Wnt signaling blockade for liver cancer treatment.
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Affiliation(s)
- Gengyi Zou
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA,Corresponding author : Gengyi Zou Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, 6565 MD Anderson Blvd Unit 1054, Houston, TX 77030, USA Tel: +1-713-792-3659, Fax: +1-713-794-5369, E-mail:
| | - Jae-Il Park
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA,Genetics and Epigenetics Program, The University of Texas MD Anderson Cancer Center Graduate School of Biomedical Sciences, Houston, TX, USA,Jae-Il Park Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, 6565 MD Anderson Blvd. Unit 1052, Houston, TX 77030, USA Tel: +1-713-792-3659, Fax: +1-713-794-5369, E-mail:
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Le Pabic P, Dranow DB, Hoyle DJ, Schilling TF. Zebrafish endochondral growth zones as they relate to human bone size, shape and disease. Front Endocrinol (Lausanne) 2022; 13:1060187. [PMID: 36561564 PMCID: PMC9763315 DOI: 10.3389/fendo.2022.1060187] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Accepted: 11/17/2022] [Indexed: 12/12/2022] Open
Abstract
Research on the genetic mechanisms underlying human skeletal development and disease have largely relied on studies in mice. However, recently the zebrafish has emerged as a popular model for skeletal research. Despite anatomical differences such as a lack of long bones in their limbs and no hematopoietic bone marrow, both the cell types in cartilage and bone as well as the genetic pathways that regulate their development are remarkably conserved between teleost fish and humans. Here we review recent studies that highlight this conservation, focusing specifically on the cartilaginous growth zones (GZs) of endochondral bones. GZs can be unidirectional such as the growth plates (GPs) of long bones in tetrapod limbs or bidirectional, such as in the synchondroses of the mammalian skull base. In addition to endochondral growth, GZs play key roles in cartilage maturation and replacement by bone. Recent studies in zebrafish suggest key roles for cartilage polarity in GZ function, surprisingly early establishment of signaling systems that regulate cartilage during embryonic development, and important roles for cartilage proliferation rather than hypertrophy in bone size. Despite anatomical differences, there are now many zebrafish models for human skeletal disorders including mutations in genes that cause defects in cartilage associated with endochondral GZs. These point to conserved developmental mechanisms, some of which operate both in cranial GZs and limb GPs, as well as others that act earlier or in parallel to known GP regulators. Experimental advantages of zebrafish for genetic screens, high resolution live imaging and drug screens, set the stage for many novel insights into causes and potential therapies for human endochondral bone diseases.
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Affiliation(s)
- Pierre Le Pabic
- Department of Biology and Marine Biology, University of North Carolina Wilmington, Willmington, NC, United States
| | - Daniel B. Dranow
- Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA, United States
| | - Diego J. Hoyle
- Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA, United States
| | - Thomas F. Schilling
- Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA, United States
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Begeman IJ, Emery B, Kurth A, Kang J. Regeneration and developmental enhancers are differentially compatible with minimal promoters. Dev Biol 2022; 492:47-58. [PMID: 36167150 PMCID: PMC10211259 DOI: 10.1016/j.ydbio.2022.09.007] [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: 09/16/2022] [Accepted: 09/19/2022] [Indexed: 12/01/2022]
Abstract
Enhancers and promoters are cis-regulatory elements that control gene expression. Enhancers are activated in a cell type-, tissue-, and condition-specific manner to stimulate promoter function and transcription. Zebrafish have emerged as a powerful animal model for examining the activities of enhancers derived from various species through transgenic enhancer assays, in which an enhancer is coupled with a minimal promoter. However, the efficiency of minimal promoters and their compatibility with multiple developmental and regeneration enhancers have not been systematically tested in zebrafish. Thus, we assessed the efficiency of six minimal promoters and comprehensively interrogated the compatibility of the promoters with developmental and regeneration enhancers. We found that the fos minimal promoter and Drosophila synthetic core promoter (DSCP) yielded high rates of leaky expression that may complicate the interpretation of enhancer assays. Notably, the adenovirus E1b promoter, the zebrafish lepb 0.8-kb (P0.8) and lepb 2-kb (P2) promoters, and a new zebrafish synthetic promoter (ZSP) that combines elements of the E1b and P0.8 promoters drove little or no ectopic expression, making them suitable for transgenic assays. We also found significant differences in compatibility among specific combinations of promoters and enhancers, indicating the importance of promoters as key regulatory elements determining the specificity of gene expression. Our study provides guidelines for transgenic enhancer assays in zebrafish to aid in the discovery of functional enhancers regulating development and regeneration.
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Affiliation(s)
- Ian J Begeman
- Department of Cell and Regenerative Biology, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Benjamin Emery
- Department of Cell and Regenerative Biology, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Andrew Kurth
- Department of Cell and Regenerative Biology, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Junsu Kang
- Department of Cell and Regenerative Biology, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, 53705, USA; UW Carbone Cancer Center, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, 53705, USA.
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