1
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Abraham E, Hartmann H, Yoshimatsu T, Baden T, Brand M. Restoration of cone-circuit functionality in the regenerating adult zebrafish retina. Dev Cell 2024:S1534-5807(24)00440-4. [PMID: 39096897 DOI: 10.1016/j.devcel.2024.07.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 05/28/2024] [Accepted: 07/09/2024] [Indexed: 08/05/2024]
Abstract
Unlike humans, teleosts like zebrafish exhibit robust retinal regeneration after injury from endogenous stem cells. However, it is unclear if regenerating cone photoreceptors regain physiological function and integrate correctly into post-synaptic circuits. We used two-photon calcium imaging of living adult retina to examine photoreceptor responses before and after light-induced lesions. To assess functional recovery of cones and downstream outer retinal circuits, we exploited color opponency; UV cones exhibit intrinsic Off-response to blue light, but On-response to green light, which depends on feedback signals from outer retinal circuits. Accordingly, we assessed the presence and quality of Off- vs. On-responses and found that regenerated UV cones regain both Off-responses to short-wavelength and On-responses to long-wavelength light within 3 months after lesion. Therefore, physiological circuit functionality is restored in regenerated cone photoreceptors, suggesting that inducing endogenous regeneration is a promising strategy for human retinal repair.
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Affiliation(s)
- Evelyn Abraham
- CRTD - Center for Regenerative Therapies TU Dresden, CMCB, Technische Universität Dresden, Fetscherstraße 105, 01307 Dresden, Germany
| | - Hella Hartmann
- CMCB - Center for Molecular and Cellular Bioengineering, Technische Universität Dresden, Tatzberg 47-51, 01307 Dresden, Germany
| | - Takeshi Yoshimatsu
- School of Life Sciences, University of Sussex, Biology Road, Brighton BN1 9QG, UK
| | - Tom Baden
- School of Life Sciences, University of Sussex, Biology Road, Brighton BN1 9QG, UK
| | - Michael Brand
- CRTD - Center for Regenerative Therapies TU Dresden, CMCB, Technische Universität Dresden, Fetscherstraße 105, 01307 Dresden, Germany; CMCB - Center for Molecular and Cellular Bioengineering, Technische Universität Dresden, Tatzberg 47-51, 01307 Dresden, Germany; PoL - Excellence Cluster Physics of Life, TU Dresden, Fetscherstrasse 105, 01307 Dresden, Germany.
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2
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Jiang H, Sun X, Wu Y, Xu J, Xiao C, Liu Q, Fang L, Liang Y, Zhou J, Wu Y, Lin Z. Contribution of Tregs to the promotion of constructive remodeling after decellularized extracellular matrix material implantation. Mater Today Bio 2024; 27:101151. [PMID: 39104900 PMCID: PMC11298607 DOI: 10.1016/j.mtbio.2024.101151] [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: 04/15/2024] [Revised: 07/02/2024] [Accepted: 07/07/2024] [Indexed: 08/07/2024] Open
Abstract
Host remodeling of decellularized extracellular matrix (dECM) material through the appropriate involvement of immune cells is essential for achieving functional organ/tissue regeneration. As many studies have focused on the role of macrophages, only few have evaluated the role of regulatory T cells (Tregs) in dECM remodeling. In this study, we used a mouse model of traumatic muscle injury to determine the role of Tregs in the constructive remodeling of vascular-derived dECM. According to the results, a certain number of Tregs could be recruited after dECM implantation. Notably, using anti-CD25 to reduce the number of Tregs recruited by the dECM was significantly detrimental to material remodeling based on a significant reduction in the number of M2 macrophages. In addition, collagen and elastic fibers, which maintain the integrity and mechanical properties of the material, rapidly degraded during the early stages of implantation. In contrast, the use of CD28-SA antibodies to increase the number of Tregs recruited by dECM promoted constructive remodeling, resulting in a decreased inflammatory response at the material edge, thinning of the surrounding fibrous connective tissue, uniform infiltration of host cells, and significantly improved tissue remodeling scores. The number of M2 macrophages increased whereas that of M1 macrophages decreased. Moreover, Treg-conditioned medium further enhanced material-induced M2 macrophage polarization in vitro. Overall, Treg is an important cell type that influences constructive remodeling of the dECM. Such findings contribute to the design of next-generation biomaterials to optimize the remodeling and regeneration of dECM materials.
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Affiliation(s)
- Hongjing Jiang
- School of Medicine, South China University of Technology, 510006, Guangzhou, Guangdong, China
- Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, 510080, Guangzhou, Guangdong, China
| | - Xuheng Sun
- School of Medicine, South China University of Technology, 510006, Guangzhou, Guangdong, China
| | - Yindi Wu
- School of Medicine, South China University of Technology, 510006, Guangzhou, Guangdong, China
- Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, 510080, Guangzhou, Guangdong, China
| | - Jianyi Xu
- School of Medicine, South China University of Technology, 510006, Guangzhou, Guangdong, China
| | - Cong Xiao
- School of Medicine, South China University of Technology, 510006, Guangzhou, Guangdong, China
| | - Qing Liu
- School of Medicine, South China University of Technology, 510006, Guangzhou, Guangdong, China
| | - Lijun Fang
- School of Medicine, South China University of Technology, 510006, Guangzhou, Guangdong, China
| | - Yuanfeng Liang
- Department of Geriatrics, Guangdong Provincial Geriatrics Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, 510006, Guangzhou, Guangdong, China
| | - Jiahui Zhou
- Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, 510080, Guangzhou, Guangdong, China
| | - Yueheng Wu
- Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, 510080, Guangzhou, Guangdong, China
- Ji Hua Institute of Biomedical Engineering Technology, Ji Hua Laboratory, 528200, Foshan, Guangdong, China
| | - Zhanyi Lin
- School of Medicine, South China University of Technology, 510006, Guangzhou, Guangdong, China
- Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, 510080, Guangzhou, Guangdong, China
- Ji Hua Institute of Biomedical Engineering Technology, Ji Hua Laboratory, 528200, Foshan, Guangdong, China
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3
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He M, Xia M, Yang Q, Chen X, Li H, Xia X. P-aminobenzoic acid promotes retinal regeneration through activation of Ascl1a in zebrafish. Neural Regen Res 2024; 19:1849-1856. [PMID: 38103253 PMCID: PMC10960302 DOI: 10.4103/1673-5374.389646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 08/07/2023] [Accepted: 10/20/2023] [Indexed: 12/18/2023] Open
Abstract
JOURNAL/nrgr/04.03/01300535-202408000-00040/figure1/v/2023-12-16T180322Z/r/image-tiff The retina of zebrafish can regenerate completely after injury. Multiple studies have demonstrated that metabolic alterations occur during retinal damage; however to date no study has identified a link between metabolites and retinal regeneration of zebrafish. Here, we performed an unbiased metabolome sequencing in the N-methyl-D-aspartic acid-damaged retinas of zebrafish to demonstrate the metabolomic mechanism of retinal regeneration. Among the differentially-expressed metabolites, we found a significant decrease in p-aminobenzoic acid in the N-methyl-D-aspartic acid-damaged retinas of zebrafish. Then, we investigated the role of p-aminobenzoic acid in retinal regeneration in adult zebrafish. Importantly, p-aminobenzoic acid activated Achaetescute complex-like 1a expression, thereby promoting Müller glia reprogramming and division, as well as Müller glia-derived progenitor cell proliferation. Finally, we eliminated folic acid and inflammation as downstream effectors of PABA and demonstrated that PABA had little effect on Müller glia distribution. Taken together, these findings show that PABA contributes to retinal regeneration through activation of Achaetescute complex-like 1a expression in the N-methyl-D-aspartic acid-damaged retinas of zebrafish.
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Affiliation(s)
- Meihui He
- Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan Province, China
- Hunan Key Laboratory of Ophthalmology, Changsha, Hunan Province, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - Mingfang Xia
- Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan Province, China
- Hunan Key Laboratory of Ophthalmology, Changsha, Hunan Province, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - Qian Yang
- Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan Province, China
- Hunan Key Laboratory of Ophthalmology, Changsha, Hunan Province, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - Xingyi Chen
- Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan Province, China
- Hunan Key Laboratory of Ophthalmology, Changsha, Hunan Province, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - Haibo Li
- Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan Province, China
- Hunan Key Laboratory of Ophthalmology, Changsha, Hunan Province, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - Xiaobo Xia
- Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan Province, China
- Hunan Key Laboratory of Ophthalmology, Changsha, Hunan Province, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan Province, China
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4
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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 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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5
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de Sena-Tomás C, Rebola Lameira L, Rebocho da Costa M, Naique Taborda P, Laborde A, Orger M, de Oliveira S, Saúde L. Neutrophil immune profile guides spinal cord regeneration in zebrafish. Brain Behav Immun 2024; 120:514-531. [PMID: 38925414 DOI: 10.1016/j.bbi.2024.06.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 05/15/2024] [Accepted: 06/23/2024] [Indexed: 06/28/2024] Open
Abstract
Spinal cord injury triggers a strong innate inflammatory response in both non-regenerative mammals and regenerative zebrafish. Neutrophils are the first immune population to be recruited to the injury site. Yet, their role in the repair process, particularly in a regenerative context, remains largely unknown. Here, we show that, following rapid recruitment to the injured spinal cord, neutrophils mostly reverse migrate throughout the zebrafish body. In addition, promoting neutrophil inflammation resolution by inhibiting Cxcr4 boosts cellular and functional regeneration. Neutrophil-specific RNA-seq analysis reveals an enhanced activation state that correlates with a transient increase in tnf-α expression in macrophage/microglia populations. Conversely, blocking neutrophil recruitment through Cxcr1/2 inhibition diminishes the presence of macrophage/microglia at the injury site and impairs spinal cord regeneration. Altogether, these findings provide new insights into the role of neutrophils in spinal cord regeneration, emphasizing the significant impact of their immune profile on the outcome of the repair process.
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Affiliation(s)
- Carmen de Sena-Tomás
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal.
| | - Leonor Rebola Lameira
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal
| | - Mariana Rebocho da Costa
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal
| | - Patrícia Naique Taborda
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal
| | - Alexandre Laborde
- Champalimaud Research, Champalimaud Centre for the Unknown, 1400-038 Lisboa, Portugal
| | - Michael Orger
- Champalimaud Research, Champalimaud Centre for the Unknown, 1400-038 Lisboa, Portugal
| | - Sofia de Oliveira
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY 10461, USA; Department of Medicine (Hepatology), Albert Einstein College of Medicine, Bronx, NY 10461, USA; Harold and Muriel Block Institute for Clinical and Translational Research, Albert Einstein College of Medicine, Bronx, NY 10461, USA; Montefiore-Einstein Comprehensive Cancer Research Center, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Leonor Saúde
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal; Instituto de Histologia e Biologia de Desenvolvimento, Faculdade de Medicina da Universidade de Lisboa, 1649-028 Lisboa, Portugal.
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6
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Zhao Y, Lv H, Yu C, Liang J, Yu H, Du Z, Zhang R. Systemic inhibition of mitochondrial fatty acid β-oxidation impedes zebrafish ventricle regeneration. Biochim Biophys Acta Mol Basis Dis 2024; 1870:167442. [PMID: 39059593 DOI: 10.1016/j.bbadis.2024.167442] [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: 11/29/2023] [Revised: 07/07/2024] [Accepted: 07/23/2024] [Indexed: 07/28/2024]
Abstract
Unlike humans and other mammals, zebrafish demonstrate a remarkable capacity to regenerate their injured hearts throughout life. Mitochondrial fatty acid β-oxidation (FAO) contributes to major energy demands of the adult hearts under physiological conditions; however, its functions in regulating cardiac regeneration and the underlying mechanisms are not completely understood. Different strategies targeting FAO have yield mixed outcomes. Here, we demonstrated that pharmacological inhibition of mitochondrial FAO with mildronate (MD) caused lipid accumulation in zebrafish larvae and suppressed ventricle regeneration. MD treatment impeded cardiogenic factor reactivation and cardiomyocyte (CM) proliferation, and impaired ventricle regeneration could be rescued by exogenous l-carnitine supplementation. Moreover, compared with the ablated hearts of wild-type fish, ventricle regeneration, cardiogenic factor reactivation and CM proliferation were significantly blocked in the ablated hearts of carnitine palmitoyltransferase-1b (cpt1b) knockout zebrafish. Further experiments suggested that NF-κB signaling and increased inflammation may be involved in the impediment of ventricle regeneration caused by systemic mitochondrial FAO inhibition. Overall, our study demonstrates the essential roles of mitochondrial FAO in zebrafish ventricle regeneration and reaffirms the sophisticated and multifaceted roles of FAO in heart regeneration with regard to different injury models and means of FAO inhibition.
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Affiliation(s)
- Yan Zhao
- TaiKang Medical School (School of Basic Medical Sciences), Wuhan University, Wuhan, China
| | - Hongbo Lv
- TaiKang Medical School (School of Basic Medical Sciences), Wuhan University, Wuhan, China
| | - Chunxiao Yu
- TaiKang Medical School (School of Basic Medical Sciences), Wuhan University, Wuhan, China
| | - Jieling Liang
- TaiKang Medical School (School of Basic Medical Sciences), Wuhan University, Wuhan, China
| | - Hong Yu
- TaiKang Medical School (School of Basic Medical Sciences), Wuhan University, Wuhan, China; Institute of Myocardial Injury and Repair, Wuhan University, Wuhan, China; Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan, China
| | - Zhenyu Du
- School of Life Sciences, East China Normal University, Shanghai, China.
| | - Ruilin Zhang
- TaiKang Medical School (School of Basic Medical Sciences), Wuhan University, Wuhan, China; Institute of Myocardial Injury and Repair, Wuhan University, Wuhan, China; Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan, China.
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7
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Bludau O, Weber A, Bosak V, Kuscha V, Dietrich K, Hans S, Brand M. Inflammation is a critical factor for successful regeneration of the adult zebrafish retina in response to diffuse light lesion. Front Cell Dev Biol 2024; 12:1332347. [PMID: 39071801 PMCID: PMC11272569 DOI: 10.3389/fcell.2024.1332347] [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: 11/02/2023] [Accepted: 06/17/2024] [Indexed: 07/30/2024] Open
Abstract
Inflammation can lead to persistent and irreversible loss of retinal neurons and photoreceptors in mammalian vertebrates. In contrast, in the adult zebrafish brain, acute neural inflammation is both necessary and sufficient to stimulate regeneration of neurons. Here, we report on the critical, positive role of the immune system to support retina regeneration in adult zebrafish. After sterile ablation of photoreceptors by phototoxicity, we find rapid response of immune cells, especially monocytes/microglia and neutrophils, which returns to homeostatic levels within 14 days post lesion. Pharmacological or genetic impairment of the immune system results in a reduced Müller glia stem cell response, seen as decreased reactive proliferation, and a strikingly reduced number of regenerated cells from them, including photoreceptors. Conversely, injection of the immune stimulators flagellin, zymosan, or M-CSF into the vitreous of the eye, leads to a robust proliferation response and the upregulation of regeneration-associated marker genes in Müller glia. Our results suggest that neuroinflammation is a necessary and sufficient driver for retinal regeneration in the adult zebrafish retina.
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Affiliation(s)
- Oliver Bludau
- CRTD—Center for Regenerative Therapies, and PoL—Cluster of Excellence Physics of Life, Dresden, Germany
| | - Anke Weber
- CRTD—Center for Regenerative Therapies, and PoL—Cluster of Excellence Physics of Life, Dresden, Germany
| | - Viktoria Bosak
- CRTD—Center for Regenerative Therapies, and PoL—Cluster of Excellence Physics of Life, Dresden, Germany
| | - Veronika Kuscha
- CRTD—Center for Regenerative Therapies, and PoL—Cluster of Excellence Physics of Life, Dresden, Germany
| | - Kristin Dietrich
- CRTD—Center for Regenerative Therapies, and PoL—Cluster of Excellence Physics of Life, Dresden, Germany
| | - Stefan Hans
- CRTD—Center for Regenerative Therapies, and PoL—Cluster of Excellence Physics of Life, Dresden, Germany
| | - Michael Brand
- CRTD—Center for Regenerative Therapies, and PoL—Cluster of Excellence Physics of Life, Dresden, Germany
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8
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Lu C, Hyde DR. Cytokines IL-1β and IL-10 are required for Müller glia proliferation following light damage in the adult zebrafish retina. Front Cell Dev Biol 2024; 12:1406330. [PMID: 38938553 PMCID: PMC11208712 DOI: 10.3389/fcell.2024.1406330] [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: 03/24/2024] [Accepted: 05/16/2024] [Indexed: 06/29/2024] Open
Abstract
Zebrafish possess the ability to regenerate dying neurons in response to retinal injury, with both Müller glia and microglia playing integral roles in this response. Resident Müller glia respond to damage by reprogramming and undergoing an asymmetric cell division to generate a neuronal progenitor cell, which continues to proliferate and differentiate into the lost neurons. In contrast, microglia become reactive, phagocytose dying cells, and release inflammatory signals into the surrounding tissue following damage. In recent years, there has been increased attention on elucidating the role that microglia play in regulating retinal regeneration. Here we demonstrate that inflammatory cytokines are differentially expressed during retinal regeneration, with the expression of a subset of pro-inflammatory cytokine genes upregulated shortly after light damage and the expression of a different subset of cytokine genes subsequently increasing. We demonstrate that both cytokine IL-1β and IL-10 are essential for Müller glia proliferation in the light-damaged retina. While IL-1β is sufficient to induce Müller glia proliferation in an undamaged retina, expression of IL-10 in undamaged retinas only induces Müller glia to express gliotic markers. Together, these findings demonstrate the essential role of inflammatory cytokines IL-1β and IL-10 on Müller glia proliferation following light damage in adult zebrafish.
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Affiliation(s)
| | - David R. Hyde
- Department of Biological Sciences, Center for Stem Cells and Regenerative Medicine, and Center for Zebrafish Research, Galvin Life Sciences Building, University of Notre Dame, Notre Dame, IN, United States
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9
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Tsissios G, Sallese A, Perez-Estrada JR, Tangeman JA, Chen W, Smucker B, Ratvasky SC, Grajales-Esquivel E, Martinez A, Visser KJ, Joven Araus A, Wang H, Simon A, Yun MH, Del Rio-Tsonis K. Macrophages modulate fibrosis during newt lens regeneration. Stem Cell Res Ther 2024; 15:141. [PMID: 38745238 PMCID: PMC11094960 DOI: 10.1186/s13287-024-03740-1] [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: 11/15/2023] [Accepted: 04/23/2024] [Indexed: 05/16/2024] Open
Abstract
BACKGROUND Previous studies have suggested that macrophages are present during lens regeneration in newts, but their role in the process is yet to be elucidated. METHODS Here we generated a transgenic reporter line using the newt, Pleurodeles waltl, that traces macrophages during lens regeneration. Furthermore, we assessed early changes in gene expression during lens regeneration using two newt species, Notophthalmus viridescens and Pleurodeles waltl. Finally, we used clodronate liposomes to deplete macrophages during lens regeneration in both species and tested the effect of a subsequent secondary injury after macrophage recovery. RESULTS Macrophage depletion abrogated lens regeneration, induced the formation of scar-like tissue, led to inflammation, decreased iris pigment epithelial cell (iPEC) proliferation, and increased rates of apoptosis in the eye. Some of these phenotypes persisted throughout the last observation period of 100 days and could be attenuated by exogenous FGF2 administration. A distinct transcript profile encoding acute inflammatory effectors was established for the dorsal iris. Reinjury of the newt eye alleviated the effects of macrophage depletion, including the resolution of scar-like tissue, and re-initiated the regeneration process. CONCLUSIONS Together, our findings highlight the importance of macrophages for facilitating a pro-regenerative environment in the newt eye by regulating fibrotic responses, modulating the overall inflammatory landscape, and maintaining the proper balance of early proliferation and late apoptosis of the iPECs.
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Affiliation(s)
- Georgios Tsissios
- Department of Biology, Miami University, Oxford, OH, USA
- Center for Visual Sciences at, Miami University, Oxford, OH, USA
- Cellular Molecular and Structural Biology Program, Miami University, Oxford, OH, USA
| | - Anthony Sallese
- Department of Biology, Miami University, Oxford, OH, USA
- Center for Visual Sciences at, Miami University, Oxford, OH, USA
| | - J Raul Perez-Estrada
- Department of Biology, Miami University, Oxford, OH, USA
- Center for Visual Sciences at, Miami University, Oxford, OH, USA
| | - Jared A Tangeman
- Department of Biology, Miami University, Oxford, OH, USA
- Center for Visual Sciences at, Miami University, Oxford, OH, USA
- Cellular Molecular and Structural Biology Program, Miami University, Oxford, OH, USA
| | - Weihao Chen
- Center for Visual Sciences at, Miami University, Oxford, OH, USA
- Cellular Molecular and Structural Biology Program, Miami University, Oxford, OH, USA
- Department of Chemical, Paper and Biomedical Engineering, Miami University, Oxford, OH, USA
| | - Byran Smucker
- Center for Visual Sciences at, Miami University, Oxford, OH, USA
- Department of Statistics, Miami University, Oxford, OH, USA
| | - Sophia C Ratvasky
- Department of Biology, Miami University, Oxford, OH, USA
- Center for Visual Sciences at, Miami University, Oxford, OH, USA
- Cellular Molecular and Structural Biology Program, Miami University, Oxford, OH, USA
| | - Erika Grajales-Esquivel
- Department of Biology, Miami University, Oxford, OH, USA
- Center for Visual Sciences at, Miami University, Oxford, OH, USA
| | - Arielle Martinez
- Department of Biology, Miami University, Oxford, OH, USA
- Center for Visual Sciences at, Miami University, Oxford, OH, USA
| | - Kimberly J Visser
- CRTD/ Center for Regenerative Therapies Dresden, Technische Universität Dresden, Dresden, Germany
| | - Alberto Joven Araus
- Department of Cell and Molecular Biology, Karolinska Institute, Stockholm, Sweden
| | - Hui Wang
- Center for Visual Sciences at, Miami University, Oxford, OH, USA
- Department of Chemical, Paper and Biomedical Engineering, Miami University, Oxford, OH, USA
| | - András Simon
- Department of Cell and Molecular Biology, Karolinska Institute, Stockholm, Sweden
| | - Maximina H Yun
- CRTD/ Center for Regenerative Therapies Dresden, Technische Universität Dresden, Dresden, Germany
- Max Planck Institute of Molecular Cell Biology and Genetics, Dresden, Germany
- Cluster of Excellence Physics of Life, Technische Universität Dresden, Dresden, Germany
| | - Katia Del Rio-Tsonis
- Department of Biology, Miami University, Oxford, OH, USA.
- Center for Visual Sciences at, Miami University, Oxford, OH, USA.
- Cellular Molecular and Structural Biology Program, Miami University, Oxford, OH, USA.
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10
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Li L, He YL, Xu N, Wang XF, Song B, Tang BQ, Lee SMY. A natural small molecule aspidosperma-type alkaloid, hecubine, as a new TREM2 activator for alleviating lipopolysaccharide-induced neuroinflammation in vitro and in vivo. Redox Biol 2024; 70:103057. [PMID: 38325196 PMCID: PMC10863309 DOI: 10.1016/j.redox.2024.103057] [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: 11/22/2023] [Revised: 01/02/2024] [Accepted: 01/23/2024] [Indexed: 02/09/2024] Open
Abstract
Neuroinflammation and oxidative stress play a crucial role in the pathogenesis of neurodegenerative diseases, including Alzheimer's disease. The triggering receptor expressed on myeloid cells 2 (TREM2), highly expressed by microglia in the central nervous system (CNS), can modulate neuroinflammatory responses. Currently, there are no approved drugs specifically targeting TREM2 for CNS diseases. Aspidosperma alkaloids have shown potential as anti-inflammatory and neuroprotective agents. This study aimed to elucidate the potential therapeutic effect of Hecubine, a natural aspidosperma-type alkaloid, as a TREM2 activator in lipopolysaccharide (LPS)-stimulated neuroinflammation in in vitro and in vivo models. In this study, molecular docking and cellular thermal shift assay (CTSA) were employed to investigate the interaction between Hecubine and TREM2. Enzyme-linked immunosorbent assay (ELISA), quantitative PCR, immunofluorescence, Western blotting, and shRNA gene knockdown were used to assess the anti-neuroinflammatory and antioxidant effects of Hecubine in microglial cells and zebrafish. Our results revealed that Hecubine directly interacted with TREM2, leading to its activation. Knockdown of TREM2 mRNA expression significantly abolished the anti-inflammatory and antioxidant effects of Hecubine on LPS-stimulated proinflammatory mediators (NO, TNF-α, IL-6, and IL-1β) and oxidative stress in microglia cells. Furthermore, Hecubine upregulated Nrf2 expression levels while downregulating TLR4 signaling expression levels both in vivo and in vitro. Silencing TREM2 upregulated TLR4 and downregulated Nrf2 signaling pathways, mimicking the effect of Hecubine, further supporting TREM2 as the drug target by which Hecubine inhibits neuroinflammation. In conclusion, this is the first study to identify a small molecule, namely Hecubine directly targeting TREM2 to mediate anti-neuroinflammation and anti-oxidative effects, which serves as a potential therapeutic agent for the treatment of neural inflammation-associated CNS diseases.
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Affiliation(s)
- Lin Li
- State Key Laboratory of Quality Research in Chinese Medicine and Institute of Chinese Medical Sciences, University of Macau, Macau, China
| | - Yu-Lin He
- State Key Laboratory of Quality Research in Chinese Medicine and Institute of Chinese Medical Sciences, University of Macau, Macau, China; Department of Food Science and Nutrition, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China
| | - Nan Xu
- State Key Laboratory of Quality Research in Chinese Medicine and Institute of Chinese Medical Sciences, University of Macau, Macau, China
| | - Xiu-Fen Wang
- State Key Laboratory of Quality Research in Chinese Medicine and Institute of Chinese Medical Sciences, University of Macau, Macau, China; Department of Medical Science, Shunde Polytechnic, Foshan, 528333, China
| | - Bing Song
- Department of Dermatology, The First Hospital of China Medical University, 110001, Shenyang, China; School of Dentistry, Cardiff University, Heath Park, Cardiff, CF14 4XY, UK; Institute of Biomedical and Health Engineering, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Ben-Qin Tang
- Department of Food Science and Nutrition, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China; Research Centre for Chinese Medicine Innovation, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China; Department of Medical Science, Shunde Polytechnic, Foshan, 528333, China.
| | - Simon Ming-Yuen Lee
- State Key Laboratory of Quality Research in Chinese Medicine and Institute of Chinese Medical Sciences, University of Macau, Macau, China; Department of Food Science and Nutrition, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China; Research Centre for Chinese Medicine Innovation, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China.
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11
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Pushchina EV, Kapustyanov IA, Kluka GG. Adult Neurogenesis of Teleost Fish Determines High Neuronal Plasticity and Regeneration. Int J Mol Sci 2024; 25:3658. [PMID: 38612470 PMCID: PMC11012045 DOI: 10.3390/ijms25073658] [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: 01/25/2024] [Revised: 02/28/2024] [Accepted: 03/07/2024] [Indexed: 04/14/2024] Open
Abstract
Studying the properties of neural stem progenitor cells (NSPCs) in a fish model will provide new information about the organization of neurogenic niches containing embryonic and adult neural stem cells, reflecting their development, origin cell lines and proliferative dynamics. Currently, the molecular signatures of these populations in homeostasis and repair in the vertebrate forebrain are being intensively studied. Outside the telencephalon, the regenerative plasticity of NSPCs and their biological significance have not yet been practically studied. The impressive capacity of juvenile salmon to regenerate brain suggests that most NSPCs are likely multipotent, as they are capable of replacing virtually all cell lineages lost during injury, including neuroepithelial cells, radial glia, oligodendrocytes, and neurons. However, the unique regenerative profile of individual cell phenotypes in the diverse niches of brain stem cells remains unclear. Various types of neuronal precursors, as previously shown, are contained in sufficient numbers in different parts of the brain in juvenile Pacific salmon. This review article aims to provide an update on NSPCs in the brain of common models of zebrafish and other fish species, including Pacific salmon, and the involvement of these cells in homeostatic brain growth as well as reparative processes during the postraumatic period. Additionally, new data are presented on the participation of astrocytic glia in the functioning of neural circuits and animal behavior. Thus, from a molecular aspect, zebrafish radial glia cells are seen to be similar to mammalian astrocytes, and can therefore also be referred to as astroglia. However, a question exists as to if zebrafish astroglia cells interact functionally with neurons, in a similar way to their mammalian counterparts. Future studies of this fish will complement those on rodents and provide important information about the cellular and physiological processes underlying astroglial function that modulate neural activity and behavior in animals.
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Affiliation(s)
- Evgeniya Vladislavovna Pushchina
- A.V. Zhirmunsky National Scientific Center of Marine Biology, Far East Branch, Russian Academy of Sciences, 690041 Vladivostok, Russia; (I.A.K.); (G.G.K.)
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12
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Guo W, Liu K, Wang Y, Ge X, Ma Y, Qin J, Zhang C, Zhao Y, Shi C. Neurotrophins and neural stem cells in posttraumatic brain injury repair. Animal Model Exp Med 2024; 7:12-23. [PMID: 38018458 PMCID: PMC10961886 DOI: 10.1002/ame2.12363] [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: 06/26/2023] [Accepted: 10/26/2023] [Indexed: 11/30/2023] Open
Abstract
Traumatic brain injury (TBI) is the main cause of disability, mental health disorder, and even death, with its incidence and social costs rising steadily. Although different treatment strategies have been developed and tested to mitigate neurological decline, a definitive cure for these conditions remains elusive. Studies have revealed that various neurotrophins represented by the brain-derived neurotrophic factor are the key regulators of neuroinflammation, apoptosis, blood-brain barrier permeability, neurite regeneration, and memory function. These factors are instrumental in alleviating neuroinflammation and promoting neuroregeneration. In addition, neural stem cells (NSC) contribute to nerve repair through inherent neuroprotective and immunomodulatory properties, the release of neurotrophins, the activation of endogenous NSCs, and intercellular signaling. Notably, innovative research proposals are emerging to combine BDNF and NSCs, enabling them to synergistically complement and promote each other in facilitating injury repair and improving neuron differentiation after TBI. In this review, we summarize the mechanism of neurotrophins in promoting neurogenesis and restoring neural function after TBI, comprehensively explore the potential therapeutic effects of various neurotrophins in basic research on TBI, and investigate their interaction with NSCs. This endeavor aims to provide a valuable insight into the clinical treatment and transformation of neurotrophins in TBI, thereby promoting the progress of TBI therapeutics.
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Affiliation(s)
- Wenwen Guo
- Laboratory Animal CenterFourth Military Medical UniversityXi'anP.R. China
- Gansu University of Traditional Chinese MedicineLanzhouP.R. China
| | - Ke Liu
- Laboratory Animal CenterFourth Military Medical UniversityXi'anP.R. China
- Gansu University of Traditional Chinese MedicineLanzhouP.R. China
| | - Yinghua Wang
- Medical College of Yan'an UniversityYan'anP.R. China
| | - Xu Ge
- Laboratory Animal CenterFourth Military Medical UniversityXi'anP.R. China
| | - Yifan Ma
- Gansu University of Traditional Chinese MedicineLanzhouP.R. China
| | - Jing Qin
- Laboratory Animal CenterFourth Military Medical UniversityXi'anP.R. China
| | - Caiqin Zhang
- Laboratory Animal CenterFourth Military Medical UniversityXi'anP.R. China
| | - Ya Zhao
- Laboratory Animal CenterFourth Military Medical UniversityXi'anP.R. China
| | - Changhong Shi
- Laboratory Animal CenterFourth Military Medical UniversityXi'anP.R. China
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13
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Shihabeddin E, Santhanam A, Aronowitz AL, O’Brien J. Cost-effective strategies to knock down genes of interest in the retinas of adult zebrafish. Front Cell Neurosci 2024; 17:1321337. [PMID: 38322239 PMCID: PMC10845135 DOI: 10.3389/fncel.2023.1321337] [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: 10/13/2023] [Accepted: 12/22/2023] [Indexed: 02/08/2024] Open
Abstract
High throughput sequencing has generated an enormous amount of information about the genes expressed in various cell types and tissues throughout the body, and about how gene expression changes over time and in diseased conditions. This knowledge has made targeted gene knockdowns an important tool in screening and identifying the roles of genes that are differentially expressed among specific cells of interest. While many approaches are available and optimized in mammalian models, there are still several limitations in the zebrafish model. In this article, we describe two approaches to target specific genes in the retina for knockdown: cell-penetrating, translation-blocking Vivo-Morpholino oligonucleotides and commercially available lipid nanoparticle reagents to deliver siRNA. We targeted expression of the PCNA gene in the retina of a P23H rhodopsin transgenic zebrafish model, in which rapidly proliferating progenitor cells replace degenerated rod photoreceptors. Retinas collected 48 h after intravitreal injections in adult zebrafish reveal that both Vivo-Morpholinos and lipid encapsulated siRNAs were able to successfully knock down expression of PCNA. However, only retinas injected with Vivo-Morpholinos showed a significant decrease in the formation of P23H rhodopsin-expressing rods, a downstream effect of PCNA inhibition. Surprisingly, Vivo-Morpholinos were able to exit the injected eye and enter the contralateral non-injected eye to inhibit PCNA expression. In this article we describe the techniques, concentrations, and considerations we found necessary to successfully target and inhibit genes through Vivo-Morpholinos and lipid encapsulated siRNAs.
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Affiliation(s)
- Eyad Shihabeddin
- Department of Ophthalmology and Visual Science, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, United States
- MD Anderson UTHealth Graduate School of Biomedical Sciences, Houston, TX, United States
| | - Abirami Santhanam
- University of Houston College of Optometry, Houston, TX, United States
| | - Alexandra L. Aronowitz
- Department of Ophthalmology and Visual Science, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, United States
| | - John O’Brien
- Department of Ophthalmology and Visual Science, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, United States
- MD Anderson UTHealth Graduate School of Biomedical Sciences, Houston, TX, United States
- University of Houston College of Optometry, Houston, TX, United States
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14
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Hu Y, Tao W. Current perspectives on microglia-neuron communication in the central nervous system: Direct and indirect modes of interaction. J Adv Res 2024:S2090-1232(24)00006-7. [PMID: 38195039 DOI: 10.1016/j.jare.2024.01.006] [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: 04/07/2023] [Revised: 10/05/2023] [Accepted: 01/06/2024] [Indexed: 01/11/2024] Open
Abstract
BACKGROUND The incessant communication that takes place between microglia and neurons is essential the development, maintenance, and pathogenesis of the central nervous system (CNS). As mobile phagocytic cells, microglia serve a critical role in surveilling and scavenging the neuronal milieu to uphold homeostasis. AIM OF REVIEW This review aims to discuss the various mechanisms that govern the interaction between microglia and neurons, from the molecular to the organ system level, and to highlight the importance of these interactions in the development, maintenance, and pathogenesis of the CNS. KEY SCIENTIFIC CONCEPTS OF REVIEW Recent research has revealed that microglia-neuron interaction is vital for regulating fundamental neuronal functions, such as synaptic pruning, axonal remodeling, and neurogenesis. The review will elucidate the intricate signaling pathways involved in these interactions, both direct and indirect, to provide a better understanding of the fundamental mechanisms of brain function. Furthermore, gaining insights into these signals could lead to the development of innovative therapies for neural disorders.
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Affiliation(s)
- Yue Hu
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, and National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, Nanjing 220023, China; School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Weiwei Tao
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, and National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, Nanjing 220023, China; School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, China.
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15
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Gence L, Fernezelian D, Meilhac O, Rastegar S, Bascands JL, Diotel N. Insulin signaling promotes neurogenesis in the brain of adult zebrafish. J Comp Neurol 2023; 531:1812-1827. [PMID: 37750011 DOI: 10.1002/cne.25542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 06/20/2023] [Accepted: 09/08/2023] [Indexed: 09/27/2023]
Abstract
Insulin is a peptide hormone that plays a central role in the regulation of circulating blood glucose in vertebrates, including zebrafish. Increasing evidence has demonstrated the important role of insulin in many brain functions. In zebrafish, two insulin receptor genes (insra and insrb) have been identified. However, their biodistribution in the adult brain as well as their cell-specific expression pattern has not been well described. Using gene expression analysis, in situ hybridization and transgenic fish, we confirmed the expression of insra, insrb, and irs1 (insulin receptor substrate 1, the downstream effector of insulin receptor) in the brain of adult zebrafish and characterized their specific expression in neurons and neural stem cells (radial glia). After demonstrating that intracerebroventricular (ICV) injection resulted in the diffusion of the injected solution within the ventricular system, we analyzed the effect of insulin ICV injection on neurogenesis. We showed that insulin promotes ventricular cell proliferation 24 h postinjection. This neurogenic effect appeared to be independent of neuroinflammatory processes. Also, after a mechanical telencephalic stab-wound injury, we highlighted the overexpression of irs1 gene 5 days postlesion notably in the ventricular zone where radial glial cells (RGCs) are localized, suggesting key roles of insulin signaling in regenerative processes. Finally, our results reinforced the expression of insulin-related proteins in the brain of adult zebrafish, highlighting the potential role of insulin signaling on neurogenesis.
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Affiliation(s)
- Laura Gence
- Université de La Réunion, INSERM, UMR 1188, Diabète athérothrombose Thérapies Réunion Océan Indien (DéTROI), Saint-Denis, La Réunion, France
| | - Danielle Fernezelian
- Université de La Réunion, INSERM, UMR 1188, Diabète athérothrombose Thérapies Réunion Océan Indien (DéTROI), Saint-Denis, La Réunion, France
| | - Olivier Meilhac
- Université de La Réunion, INSERM, UMR 1188, Diabète athérothrombose Thérapies Réunion Océan Indien (DéTROI), Saint-Denis, La Réunion, France
- CHU de La Réunion, Saint-Denis, La Réunion, France
| | - Sepand Rastegar
- Institute of Biological and Chemical Systems-Biological Information Processing (IBCS-BIP), Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
| | - Jean-Loup Bascands
- Université de La Réunion, INSERM, UMR 1188, Diabète athérothrombose Thérapies Réunion Océan Indien (DéTROI), Saint-Denis, La Réunion, France
| | - Nicolas Diotel
- Université de La Réunion, INSERM, UMR 1188, Diabète athérothrombose Thérapies Réunion Océan Indien (DéTROI), Saint-Denis, La Réunion, France
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16
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Tsissios G, Sallese A, Perez-Estrada JR, Tangeman JA, Chen W, Smucker B, Ratvasky SC, Grajales-Esquive EL, Martinez A, Visser KJ, Araus AJ, Wang H, Simon A, Yun MH, Rio-Tsonis KD. Macrophages modulate fibrosis during newt lens regeneration. RESEARCH SQUARE 2023:rs.3.rs-3603645. [PMID: 38045376 PMCID: PMC10690311 DOI: 10.21203/rs.3.rs-3603645/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2023]
Abstract
Background Previous studies indicated that macrophages play a role during lens regeneration in newts, but their function has not been tested experimentally. Methods Here we generated a transgenic newt reporter line in which macrophages can be visualized in vivo. Using this new tool, we analyzed the location of macrophages during lens regeneration. We uncovered early gene expression changes using bulk RNAseq in two newt species, Notophthalmus viridescens and Pleurodeles waltl. Next, we used clodronate liposomes to deplete macrophages, which inhibited lens regeneration in both newt species. Results Macrophage depletion induced the formation of scar-like tissue, an increased and sustained inflammatory response, an early decrease in iris pigment epithelial cell (iPEC) proliferation and a late increase in apoptosis. Some of these phenotypes persisted for at least 100 days and could be rescued by exogenous FGF2. Re-injury alleviated the effects of macrophage depletion and re-started the regeneration process. Conclusions Together, our findings highlight the importance of macrophages in facilitating a pro-regenerative environment in the newt eye, helping to resolve fibrosis, modulating the overall inflammatory landscape and maintaining the proper balance of early proliferation and late apoptosis.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | - Maximina H Yun
- Dresden University of Technology: Technische Universitat Dresden
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17
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Santhanam A, Shihabeddin E, Wei H, Wu J, O'Brien J. Molecular basis of retinal remodeling in a zebrafish model of retinitis pigmentosa. Cell Mol Life Sci 2023; 80:362. [PMID: 37979052 PMCID: PMC10657301 DOI: 10.1007/s00018-023-05021-1] [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: 07/22/2023] [Revised: 10/10/2023] [Accepted: 10/27/2023] [Indexed: 11/19/2023]
Abstract
A hallmark of inherited retinal degenerative diseases such as retinitis pigmentosa (RP) is progressive structural and functional remodeling of the remaining retinal cells as photoreceptors degenerate. Extensive remodeling of the retina stands as a barrier for the successful implementation of strategies to restore vision. To understand the molecular basis of remodeling, we performed analyses of single-cell transcriptome data from adult zebrafish retina of wild type AB strain (WT) and a P23H mutant rhodopsin transgenic model of RP with continuous degeneration and regeneration. Retinas from both female and male fish were pooled to generate each library, combining data from both sexes. We provide a benchmark atlas of retinal cell type transcriptomes in zebrafish and insight into how each retinal cell type is affected in the P23H model. Oxidative stress is found throughout the retina, with increases in reliance on oxidative metabolism and glycolysis in the affected rods as well as cones, bipolar cells, and retinal ganglion cells. There is also transcriptional evidence for widespread synaptic remodeling and enhancement of glutamatergic transmission in the inner retina. Notably, changes in circadian rhythm regulation are detected in cones, bipolar cells, and retinal pigmented epithelium. We also identify the transcriptomic signatures of retinal progenitor cells and newly formed rods essential for the regenerative process. This comprehensive transcriptomic analysis provides a molecular road map to understand how the retina remodels in the context of chronic retinal degeneration with ongoing regeneration.
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Affiliation(s)
- Abirami Santhanam
- Department of Ophthalmology & Visual Science, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, 77030, USA.
- University of Houston College of Optometry, Houston, TX, 77204, USA.
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, 77030, USA.
| | - Eyad Shihabeddin
- Department of Ophthalmology & Visual Science, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, 77030, USA
- MD Anderson UT Health Graduate School of Biomedical Sciences, Houston, TX, 77030, USA
| | - Haichao Wei
- Department of Neurosurgery, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, 77030, USA
| | - Jiaqian Wu
- MD Anderson UT Health Graduate School of Biomedical Sciences, Houston, TX, 77030, USA
- Department of Neurosurgery, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, 77030, USA
| | - John O'Brien
- Department of Ophthalmology & Visual Science, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, 77030, USA.
- University of Houston College of Optometry, Houston, TX, 77204, USA.
- MD Anderson UT Health Graduate School of Biomedical Sciences, Houston, TX, 77030, USA.
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18
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Ying C, Zhang J, Zhang H, Gao S, Guo X, Lin J, Wu H, Hong Y. Stem cells in central nervous system diseases: Promising therapeutic strategies. Exp Neurol 2023; 369:114543. [PMID: 37743001 DOI: 10.1016/j.expneurol.2023.114543] [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: 07/09/2023] [Revised: 09/11/2023] [Accepted: 09/14/2023] [Indexed: 09/26/2023]
Abstract
Central nervous system (CNS) diseases are a leading cause of death and disability. Due to CNS neurons have no self-renewal and regenerative ability as they mature, their loss after injury or disease is irreversible and often leads to functional impairments. Unfortunately, therapeutic options for CNS diseases are still limited, and effective treatments for these notorious diseases are warranted to be explored. At present, stem cell therapy has emerged as a potential therapeutic strategy for improving the prognosis of CNS diseases. Accumulating preclinical and clinical evidences have demonstrated that multiple molecular mechanisms, such as cell replacement, immunoregulation and neurotrophic effect, underlie the use of stem cell therapy for CNS diseases. However, several issues have yet to be addressed to support its clinical application. Thus, this review article aims to summarize the role and underlying mechanisms of stem cell therapy in treating CNS diseases. And it is worthy of further evaluation for the potential therapeutic applications of stem cell treatment in CNS disease.
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Affiliation(s)
- Caidi Ying
- Department of Neurosurgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China; Clinical Research Center for Neurological Diseases of Zhejiang Province, Hangzhou, China
| | - Jiahao Zhang
- Department of Neurosurgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China; Clinical Research Center for Neurological Diseases of Zhejiang Province, Hangzhou, China
| | - Haocheng Zhang
- Department of Neurosurgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China; Clinical Research Center for Neurological Diseases of Zhejiang Province, Hangzhou, China
| | - Shiqi Gao
- Department of Neurosurgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China; Clinical Research Center for Neurological Diseases of Zhejiang Province, Hangzhou, China
| | - Xiaoming Guo
- Department of Neurosurgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China; Clinical Research Center for Neurological Diseases of Zhejiang Province, Hangzhou, China
| | - Jun Lin
- Department of Neurosurgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China; Clinical Research Center for Neurological Diseases of Zhejiang Province, Hangzhou, China
| | - Haijian Wu
- Department of Neurosurgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China; Clinical Research Center for Neurological Diseases of Zhejiang Province, Hangzhou, China.
| | - Yuan Hong
- Department of Neurosurgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China; Clinical Research Center for Neurological Diseases of Zhejiang Province, Hangzhou, China.
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19
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Palsamy K, Chen JY, Skaggs K, Qadeer Y, Connors M, Cutler N, Richmond J, Kommidi V, Poles A, Affrunti D, Powell C, Goldman D, Parent JM. Microglial depletion after brain injury prolongs inflammation and impairs brain repair, adult neurogenesis and pro-regenerative signaling. Glia 2023; 71:2642-2663. [PMID: 37449457 PMCID: PMC10528132 DOI: 10.1002/glia.24444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 06/28/2023] [Accepted: 06/30/2023] [Indexed: 07/18/2023]
Abstract
The adult zebrafish brain, unlike mammals, has a remarkable regenerative capacity. Although inflammation in part hinders regeneration in mammals, it is necessary for zebrafish brain repair. Microglia are resident brain immune cells that regulate the inflammatory response. To explore the microglial role in repair, we used liposomal clodronate or colony stimulating factor-1 receptor (csf1r) inhibitor to suppress microglia after brain injury, and also examined regeneration in two genetic mutant lines that lack microglia. We found that microglial ablation impaired telencephalic regeneration after injury. Microglial suppression attenuated cell proliferation at the intermediate progenitor cell amplification stage of neurogenesis. Notably, the loss of microglia impaired phospho-Stat3 (signal transducer and activator of transcription 3) and ß-Catenin signaling after injury. Furthermore, the ectopic activation of Stat3 and ß-Catenin rescued neurogenesis defects caused by microglial loss. Microglial suppression also prolonged the post-injury inflammatory phase characterized by neutrophil accumulation, likely hindering the resolution of inflammation. These findings reveal specific roles of microglia and inflammatory signaling during zebrafish telencephalic regeneration that should advance strategies to improve mammalian brain repair.
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Affiliation(s)
- Kanagaraj Palsamy
- Department of Neurology, University of Michigan, Ann Arbor, Michigan, USA
| | - Jessica Y Chen
- Department of Neurology, University of Michigan, Ann Arbor, Michigan, USA
| | - Kaia Skaggs
- Department of Neurology, University of Michigan, Ann Arbor, Michigan, USA
- University of Findlay, Findlay, Ohio, USA
| | - Yusuf Qadeer
- Department of Neurology, University of Michigan, Ann Arbor, Michigan, USA
| | - Meghan Connors
- Department of Neurology, University of Michigan, Ann Arbor, Michigan, USA
| | - Noah Cutler
- Department of Neurology, University of Michigan, Ann Arbor, Michigan, USA
| | - Joshua Richmond
- Department of Neurology, University of Michigan, Ann Arbor, Michigan, USA
| | - Vineeth Kommidi
- Department of Neurology, University of Michigan, Ann Arbor, Michigan, USA
| | - Allison Poles
- Department of Neurology, University of Michigan, Ann Arbor, Michigan, USA
| | - Danielle Affrunti
- Department of Neurology, University of Michigan, Ann Arbor, Michigan, USA
| | - Curtis Powell
- Michigan Neuroscience Institute, Ann Arbor, Michigan, USA
- Department of Biological Chemistry, University of Michigan, Ann Arbor, Michigan, USA
| | - Daniel Goldman
- Michigan Neuroscience Institute, Ann Arbor, Michigan, USA
- Department of Biological Chemistry, University of Michigan, Ann Arbor, Michigan, USA
| | - Jack M Parent
- Department of Neurology, University of Michigan, Ann Arbor, Michigan, USA
- Michigan Neuroscience Institute, Ann Arbor, Michigan, USA
- VA Ann Arbor Healthcare System, Ann Arbor, Michigan, USA
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20
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Sámano C, Mazzone GL. The role of astrocytes response triggered by hyperglycaemia during spinal cord injury. Arch Physiol Biochem 2023:1-18. [PMID: 37798949 DOI: 10.1080/13813455.2023.2264538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Accepted: 09/22/2023] [Indexed: 10/07/2023]
Abstract
Objective: This manuscript aimed to provide a comprehensive overview of the physiological, molecular, and cellular mechanisms triggered by reactive astrocytes (RA) in the context of spinal cord injury (SCI), with a particular focus on cases involving hyperglycaemia.Methods: The compilation of articles related to astrocyte responses in neuropathological conditions, with a specific emphasis on those related to SCI and hyperglycaemia, was conducted by searching through databases including Science Direct, Web of Science, and PubMed.Results and Conclusions: This article explores the dual role of astrocytes in both neurophysiological and neurodegenerative conditions within the central nervous system (CNS). In the aftermath of SCI and hyperglycaemia, astrocytes undergo a transformation into RA, adopting a distinct phenotype. While there are currently no approved therapies for SCI, various therapeutic strategies have been proposed to alleviate the detrimental effects of RAs following SCI and hyperglycemia. These strategies show promising potential in the treatment of SCI and its likely comorbidities.
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Affiliation(s)
- C Sámano
- Departamento de Ciencias Naturales, Universidad Autónoma Metropolitana, Unidad Cuajimalpa (UAM-C), Ciudad de México, México
| | - G L Mazzone
- Instituto de Investigaciones en Medicina Traslacional (IIMT), CONICET-Universidad Austral, Pilar, Buenos Aires, Argentina
- Facultad de Ciencias Biomédicas, Universidad Austral, Pilar, Buenos Aires, Argentina
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21
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Fan PL, Wang SS, Chu SF, Chen NH. Time-dependent dual effect of microglia in ischemic stroke. Neurochem Int 2023; 169:105584. [PMID: 37454817 DOI: 10.1016/j.neuint.2023.105584] [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: 05/15/2023] [Revised: 07/07/2023] [Accepted: 07/10/2023] [Indexed: 07/18/2023]
Abstract
Stroke, the third leading cause of death and disability worldwide, is classified into ischemic or hemorrhagic, in which approximately 85% of strokes are ischemic. Ischemic stroke occurs as a result of arterial occlusion due to embolus or thrombus, with ischemia in the perfusion territory supplied by the occluded artery. The traditional concept that ischemic stroke is solely a vascular occlusion disorder has been expanded to include the dynamic interaction between microglia, astrocytes, neurons, vascular cells, and matrix components forming the "neurovascular unit." Acute ischemic stroke triggers a wide spectrum of neurovascular disturbances, glial activation, and secondary neuroinflammation that promotes further injury, ultimately resulting in neuronal death. Microglia, as the resident macrophages in the central nervous system, is one of the first responders to ischemic injury and plays a significant role in post-ischemic neuroinflammation. In this review, we reviewed the mechanisms of microglia in multiple stages of post-ischemic neuroinflammation development, including acute, sub-acute and chronic phases of stroke. A comprehensive understanding of the dynamic variation and the time-dependent role of microglia in post-stroke neuroinflammation could aid in the search for more effective therapeutics and diagnostic strategies for ischemic stroke.
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Affiliation(s)
- Ping-Long Fan
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
| | - Sha-Sha Wang
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
| | - Shi-Feng Chu
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica & Neuroscience Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050, China.
| | - Nai-Hong Chen
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, 510405, China; State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica & Neuroscience Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050, China.
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22
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Laddach A, Chng SH, Lasrado R, Progatzky F, Shapiro M, Erickson A, Sampedro Castaneda M, Artemov AV, Bon-Frauches AC, Amaniti EM, Kleinjung J, Boeing S, Ultanir S, Adameyko I, Pachnis V. A branching model of lineage differentiation underpinning the neurogenic potential of enteric glia. Nat Commun 2023; 14:5904. [PMID: 37737269 PMCID: PMC10516949 DOI: 10.1038/s41467-023-41492-3] [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: 03/08/2023] [Accepted: 09/06/2023] [Indexed: 09/23/2023] Open
Abstract
Glial cells have been proposed as a source of neural progenitors, but the mechanisms underpinning the neurogenic potential of adult glia are not known. Using single cell transcriptomic profiling, we show that enteric glial cells represent a cell state attained by autonomic neural crest cells as they transition along a linear differentiation trajectory that allows them to retain neurogenic potential while acquiring mature glial functions. Key neurogenic loci in early enteric nervous system progenitors remain in open chromatin configuration in mature enteric glia, thus facilitating neuronal differentiation under appropriate conditions. Molecular profiling and gene targeting of enteric glial cells in a cell culture model of enteric neurogenesis and a gut injury model demonstrate that neuronal differentiation of glia is driven by transcriptional programs employed in vivo by early progenitors. Our work provides mechanistic insight into the regulatory landscape underpinning the development of intestinal neural circuits and generates a platform for advancing glial cells as therapeutic agents for the treatment of neural deficits.
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Affiliation(s)
- Anna Laddach
- Nervous System Development and Homeostasis Laboratory, the Francis Crick Institute, 1 Midland Road, London, NW1 1AT, UK.
| | - Song Hui Chng
- Nervous System Development and Homeostasis Laboratory, the Francis Crick Institute, 1 Midland Road, London, NW1 1AT, UK
- Experimental Drug Development Centre A*STAR 10 Biopolis Road, Chromos, 138670, Singapore
| | - Reena Lasrado
- Nervous System Development and Homeostasis Laboratory, the Francis Crick Institute, 1 Midland Road, London, NW1 1AT, UK
- COMPASS Pathways PLC, Fora, 33 Broadwick St, London, W1F 0DQ, UK
| | - Fränze Progatzky
- Nervous System Development and Homeostasis Laboratory, the Francis Crick Institute, 1 Midland Road, London, NW1 1AT, UK
| | - Michael Shapiro
- Nervous System Development and Homeostasis Laboratory, the Francis Crick Institute, 1 Midland Road, London, NW1 1AT, UK
| | - Alek Erickson
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, 17165, Sweden
| | - Marisol Sampedro Castaneda
- Kinases and Brain Development Laboratory, the Francis Crick Institute, 1 Midland Road, London, NW1 1AT, UK
| | - Artem V Artemov
- Department of Neuroimmunology, Center for Brain Research, Medical University of Vienna, Bienna, 1090, Austria
- Boehringer Ingelheim RCV, Vienna, Austria
| | - Ana Carina Bon-Frauches
- Nervous System Development and Homeostasis Laboratory, the Francis Crick Institute, 1 Midland Road, London, NW1 1AT, UK
| | - Eleni-Maria Amaniti
- Nervous System Development and Homeostasis Laboratory, the Francis Crick Institute, 1 Midland Road, London, NW1 1AT, UK
- Sainsbury Wellcome Centre, London, UK
| | - Jens Kleinjung
- Nervous System Development and Homeostasis Laboratory, the Francis Crick Institute, 1 Midland Road, London, NW1 1AT, UK
- Sosei Heptares, Steinmetz Building, Granta Park, Great Abington, Cambridge, CB21 6DG, UK
| | - Stefan Boeing
- Bioinformatics and Biostatistics Science Technology Platform, the Francis Crick Institute, 1 Midland Road, London, NW1 1AT, UK
| | - Sila Ultanir
- Kinases and Brain Development Laboratory, the Francis Crick Institute, 1 Midland Road, London, NW1 1AT, UK
| | - Igor Adameyko
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, 17165, Sweden
- Department of Neuroimmunology, Center for Brain Research, Medical University of Vienna, Bienna, 1090, Austria
| | - Vassilis Pachnis
- Nervous System Development and Homeostasis Laboratory, the Francis Crick Institute, 1 Midland Road, London, NW1 1AT, UK.
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23
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Zeng CW, Tsai HJ. The Promising Role of a Zebrafish Model Employed in Neural Regeneration Following a Spinal Cord Injury. Int J Mol Sci 2023; 24:13938. [PMID: 37762240 PMCID: PMC10530783 DOI: 10.3390/ijms241813938] [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: 07/27/2023] [Revised: 09/07/2023] [Accepted: 09/09/2023] [Indexed: 09/29/2023] Open
Abstract
Spinal cord injury (SCI) is a devastating event that results in a wide range of physical impairments and disabilities. Despite the advances in our understanding of the biological response to injured tissue, no effective treatments are available for SCIs at present. Some studies have addressed this issue by exploring the potential of cell transplantation therapy. However, because of the abnormal microenvironment in injured tissue, the survival rate of transplanted cells is often low, thus limiting the efficacy of such treatments. Many studies have attempted to overcome these obstacles using a variety of cell types and animal models. Recent studies have shown the utility of zebrafish as a model of neural regeneration following SCIs, including the proliferation and migration of various cell types and the involvement of various progenitor cells. In this review, we discuss some of the current challenges in SCI research, including the accurate identification of cell types involved in neural regeneration, the adverse microenvironment created by SCIs, attenuated immune responses that inhibit nerve regeneration, and glial scar formation that prevents axonal regeneration. More in-depth studies are needed to fully understand the neural regeneration mechanisms, proteins, and signaling pathways involved in the complex interactions between the SCI microenvironment and transplanted cells in non-mammals, particularly in the zebrafish model, which could, in turn, lead to new therapeutic approaches to treat SCIs in humans and other mammals.
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Affiliation(s)
- Chih-Wei Zeng
- Department of Molecular Biology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA;
- Hamon Center for Regenerative Science and Medicine, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Huai-Jen Tsai
- Department of Life Science, Fu Jen Catholic University, New Taipei City 242062, Taiwan
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24
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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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25
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Yang D, Wang W, Yuan Z, Liang Y. Information-Rich Multi-Functional OCT for Adult Zebrafish Intra- and Extracranial Imaging. Bioengineering (Basel) 2023; 10:856. [PMID: 37508883 PMCID: PMC10375992 DOI: 10.3390/bioengineering10070856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Revised: 07/03/2023] [Accepted: 07/11/2023] [Indexed: 07/30/2023] Open
Abstract
The zebrafish serves as a valuable animal model for both intra- and extracranial research, particularly in relation to the brain and skull. To effectively investigate the development and regeneration of adult zebrafish, a versatile in vivo imaging technique capable of showing both intra- and extracranial conditions is essential. In this paper, we utilized a high-resolution multi-functional optical coherence tomography (OCT) to obtain rich intra- and extracranial imaging outcomes of adult zebrafish, encompassing pigmentation distribution, tissue-specific information, cranial vascular imaging, and the monitoring of traumatic brain injury (TBI). Notably, it is the first that the channels through the zebrafish cranial suture, which may have a crucial function in maintaining the patency of the cranial sutures, have been observed. Rich imaging results demonstrated that a high-resolution multi-functional OCT system can provide a wealth of novel and interpretable biological information for intra- and extracranial studies of adult zebrafish.
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Affiliation(s)
- Di Yang
- Tianjin Key Laboratory of Micro-Scale Optical Information Science and Technology, Institute of Modern Optics, Nankai University, Tianjin 300350, China
| | - Weike Wang
- Tianjin Key Laboratory of Micro-Scale Optical Information Science and Technology, Institute of Modern Optics, Nankai University, Tianjin 300350, China
| | - Zhuoqun Yuan
- Tianjin Key Laboratory of Micro-Scale Optical Information Science and Technology, Institute of Modern Optics, Nankai University, Tianjin 300350, China
| | - Yanmei Liang
- Tianjin Key Laboratory of Micro-Scale Optical Information Science and Technology, Institute of Modern Optics, Nankai University, Tianjin 300350, China
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26
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Van Houcke J, Mariën V, Zandecki C, Ayana R, Pepermans E, Boonen K, Seuntjens E, Baggerman G, Arckens L. A short dasatinib and quercetin treatment is sufficient to reinstate potent adult neuroregenesis in the aged killifish. NPJ Regen Med 2023; 8:31. [PMID: 37328477 DOI: 10.1038/s41536-023-00304-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Accepted: 05/23/2023] [Indexed: 06/18/2023] Open
Abstract
The young African turquoise killifish has a high regenerative capacity, but loses it with advancing age, adopting several aspects of the limited form of mammalian regeneration. We deployed a proteomic strategy to identify pathways that underpin the loss of regenerative power caused by aging. Cellular senescence stood out as a potential brake on successful neurorepair. We applied the senolytic cocktail Dasatinib and Quercetin (D + Q) to test clearance of chronic senescent cells from the aged killifish central nervous system (CNS) as well as rebooting the neurogenic output. Our results show that the entire aged killifish telencephalon holds a very high senescent cell burden, including the parenchyma and the neurogenic niches, which could be diminished by a short-term, late-onset D + Q treatment. Reactive proliferation of non-glial progenitors increased substantially and lead to restorative neurogenesis after traumatic brain injury. Our results provide a cellular mechanism for age-related regeneration resilience and a proof-of-concept of a potential therapy to revive the neurogenic potential in an already aged or diseased CNS.
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Affiliation(s)
- Jolien Van Houcke
- Laboratory of Neuroplasticity and Neuroproteomics, Department of Biology, KU Leuven, 3000, Leuven, Belgium
| | - Valerie Mariën
- Laboratory of Neuroplasticity and Neuroproteomics, Department of Biology, KU Leuven, 3000, Leuven, Belgium
| | - Caroline Zandecki
- Laboratory of Neuroplasticity and Neuroproteomics, Department of Biology, KU Leuven, 3000, Leuven, Belgium
- Laboratory of Developmental Neurobiology, Department of Biology, KU Leuven, 3000, Leuven, Belgium
| | - Rajagopal Ayana
- Laboratory of Neuroplasticity and Neuroproteomics, Department of Biology, KU Leuven, 3000, Leuven, Belgium
- Laboratory of Developmental Neurobiology, Department of Biology, KU Leuven, 3000, Leuven, Belgium
| | - Elise Pepermans
- Centre for Proteomics, University of Antwerp, 2020, Antwerpen, Belgium
| | - Kurt Boonen
- Centre for Proteomics, University of Antwerp, 2020, Antwerpen, Belgium
- Health Unit, VITO, 2400, Mol, Belgium
| | - Eve Seuntjens
- Laboratory of Developmental Neurobiology, Department of Biology, KU Leuven, 3000, Leuven, Belgium
- KU Leuven Brain Institute, KU Leuven, 3000, Leuven, Belgium
| | - Geert Baggerman
- Centre for Proteomics, University of Antwerp, 2020, Antwerpen, Belgium
- Health Unit, VITO, 2400, Mol, Belgium
| | - Lutgarde Arckens
- Laboratory of Neuroplasticity and Neuroproteomics, Department of Biology, KU Leuven, 3000, Leuven, Belgium.
- KU Leuven Brain Institute, KU Leuven, 3000, Leuven, Belgium.
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27
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Tsissios G, Sallese A, Perez-Estrada JR, Tangeman JA, Chen W, Smucker B, Ratvasky SC, Grajales-Esquivel E, Martinez A, Visser KJ, Araus AJ, Wang H, Simon A, Yun MH, Rio-Tsonis KD. Macrophages modulate fibrosis during newt lens regeneration. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.06.04.543633. [PMID: 37333184 PMCID: PMC10274724 DOI: 10.1101/2023.06.04.543633] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/20/2023]
Abstract
Previous studies indicated that macrophages play a role during lens regeneration in newts, but their function has not been tested experimentally. Here we generated a transgenic newt reporter line in which macrophages can be visualized in vivo. Using this new tool, we analyzed the location of macrophages during lens regeneration. We uncovered early gene expression changes using bulk RNAseq in two newt species, Notophthalmus viridescens and Pleurodeles waltl. Next, we used clodronate liposomes to deplete macrophages, which inhibited lens regeneration in both newt species. Macrophage depletion induced the formation of scar-like tissue, an increased and sustained inflammatory response, an early decrease in iris pigment epithelial cell (iPEC) proliferation and a late increase in apoptosis. Some of these phenotypes persisted for at least 100 days and could be rescued by exogenous FGF2. Re-injury alleviated the effects of macrophage depletion and re-started the regeneration process. Together, our findings highlight the importance of macrophages in facilitating a pro-regenerative environment in the newt eye, helping to resolve fibrosis, modulating the overall inflammatory landscape and maintaining the proper balance of early proliferation and late apoptosis.
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Affiliation(s)
- Georgios Tsissios
- Department of Biology, Miami University, Oxford, OH, USA
- Center for Visual Sciences at Miami University, Oxford, OH, USA
- Cellular Molecular and Structural Biology Program, Miami University, Oxford, OH, USA
| | - Anthony Sallese
- Department of Biology, Miami University, Oxford, OH, USA
- Center for Visual Sciences at Miami University, Oxford, OH, USA
| | - J Raul Perez-Estrada
- Department of Biology, Miami University, Oxford, OH, USA
- Center for Visual Sciences at Miami University, Oxford, OH, USA
| | - Jared A Tangeman
- Department of Biology, Miami University, Oxford, OH, USA
- Center for Visual Sciences at Miami University, Oxford, OH, USA
- Cellular Molecular and Structural Biology Program, Miami University, Oxford, OH, USA
| | - Weihao Chen
- Center for Visual Sciences at Miami University, Oxford, OH, USA
- Cellular Molecular and Structural Biology Program, Miami University, Oxford, OH, USA
- Department of Chemical, Paper and Biomedical Engineering, Miami University, Oxford, OH, USA
| | - Byran Smucker
- Center for Visual Sciences at Miami University, Oxford, OH, USA
- Department of Statistics, Miami University, Oxford, OH, USA
| | - Sophia C Ratvasky
- Department of Biology, Miami University, Oxford, OH, USA
- Center for Visual Sciences at Miami University, Oxford, OH, USA
- Cellular Molecular and Structural Biology Program, Miami University, Oxford, OH, USA
| | - Erika Grajales-Esquivel
- Department of Biology, Miami University, Oxford, OH, USA
- Center for Visual Sciences at Miami University, Oxford, OH, USA
| | - Arielle Martinez
- Department of Biology, Miami University, Oxford, OH, USA
- Center for Visual Sciences at Miami University, Oxford, OH, USA
| | - Kimberly J Visser
- CRTD Center for Regenerative Therapies Dresden, Technische Universität Dresden, Dresden, Germany
| | - Alberto Joven Araus
- Karolinska Institute, Department of Cell and Molecular Biology, Stockholm, Sweden
| | - Hui Wang
- Center for Visual Sciences at Miami University, Oxford, OH, USA
- Department of Chemical, Paper and Biomedical Engineering, Miami University, Oxford, OH, USA
| | - Andras Simon
- Karolinska Institute, Department of Cell and Molecular Biology, Stockholm, Sweden
| | - Maximina H Yun
- CRTD Center for Regenerative Therapies Dresden, Technische Universität Dresden, Dresden, Germany
- Max Planck Institute of Molecular Cell Biology and Genetics, Dresden, Germany
- Cluster of Excellence Physics of Life, Technische Universität Dresden, Dresden, Germany
| | - Katia Del Rio-Tsonis
- Department of Biology, Miami University, Oxford, OH, USA
- Center for Visual Sciences at Miami University, Oxford, OH, USA
- Cellular Molecular and Structural Biology Program, Miami University, Oxford, OH, USA
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28
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Fleischhauer L, López-Delgado AC, Geurtzen K, Knopf F. Glucocorticoid effects in the regenerating fin reflect tissue homeostasis disturbances in zebrafish by affecting Wnt signaling. Front Endocrinol (Lausanne) 2023; 14:1122351. [PMID: 37334313 PMCID: PMC10273277 DOI: 10.3389/fendo.2023.1122351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 05/09/2023] [Indexed: 06/20/2023] Open
Abstract
As a treatment for various immune-mediated diseases, the use of glucocorticoids as anti-inflammatory and immunosuppressive agents is common practice. However, their use is severely hampered by the risk of the development of adverse effects such as secondary osteoporosis, skin atrophy, and peptic ulcer formation. The exact molecular and cellular mechanisms underlying those adverse effects, which involve most major organ systems, are not yet fully understood. Therefore, their investigation is of great importance to improve treatment regimens for patients. Here, we investigated the effects of the glucocorticoid prednisolone on cell proliferation and Wnt signaling in homeostatic skin and intestinal tissue and compared them to the anti-regenerative effects in zebrafish fin regeneration. We also investigated a potential recovery from the glucocorticoid treatment and the impact of short-term treatment with prednisolone. We identified a dampening effect of prednisolone on Wnt signaling and proliferation in highly proliferative tissues, namely the skin and intestine, as well as reduced fin regenerate length and Wnt reporter activity in the fin. The presence of the Wnt inhibitor Dickkopf1 was enhanced in prednisolone treated skin tissue. A decreased number of mucous producing goblet cells was observed in the intestine of prednisolone treated zebrafish. Unexpectedly, proliferation in bone forming osteoblasts of the skull, homeostatic scales, as well as the brain was not decreased, opposite to the observed effects in the skin, fin, and intestine. Short-term treatment with prednisolone for a few days did not significantly alter fin regenerate length, skin cell proliferation, intestinal leukocyte number and proliferation of intestinal crypt cells. However, it affected the number of mucous-producing goblet cells in the gut. Likewise, discontinuation of prednisolone treatment for a few days saved the skin and intestine from a significant reduction of skin and intestinal cell proliferation, intestinal leukocyte number and regenerate length, but did not rescue goblet cell number. The suppressive effects of glucocorticoids in highly proliferative tissues may be relevant in the context of their therapeutic applications in patients with inflammatory diseases.
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Affiliation(s)
- Lisa Fleischhauer
- CRTD – Center for Regenerative Therapies, TU Dresden, Dresden, Germany
- Center for Healthy Aging, Faculty of Medicine Carl Gustav Carus TU Dresden, Dresden, Germany
| | - Alejandra Cristina López-Delgado
- CRTD – Center for Regenerative Therapies, TU Dresden, Dresden, Germany
- Center for Healthy Aging, Faculty of Medicine Carl Gustav Carus TU Dresden, Dresden, Germany
| | - Karina Geurtzen
- CRTD – Center for Regenerative Therapies, TU Dresden, Dresden, Germany
- Laboratory of Clinical and Experimental Endocrinology, Department of Chronic Diseases, Metabolism and Ageing, KU Leuven, Leuven, Belgium
| | - Franziska Knopf
- CRTD – Center for Regenerative Therapies, TU Dresden, Dresden, Germany
- Center for Healthy Aging, Faculty of Medicine Carl Gustav Carus TU Dresden, Dresden, Germany
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29
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Xia L, Zhang F, Li Y, Mo Y, Zhang L, Li Q, Luo M, Hou X, Du Z, Deng J, Hao E. A new perspective on Alzheimer's disease: m6A modification. Front Genet 2023; 14:1166831. [PMID: 37255714 PMCID: PMC10225986 DOI: 10.3389/fgene.2023.1166831] [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: 02/15/2023] [Accepted: 04/26/2023] [Indexed: 06/01/2023] Open
Abstract
As a neurodegenerative disease, Alzheimer's disease (AD) is characterized by synaptic loss, extracellular plaques of amyloid accumulation, hyperphosphorylation of tau, and neuroinflammation. Various biological processes are affected by epitranscriptomic modifications, which regulate the metabolism of mRNA in cells and regulate the expression of genes. In response to changes in m6A modification levels, the nervous system becomes dysfunctional and plays a significant role in the development of Alzheimer's disease. As a result of recent research, this paper reviews advances in the understanding of the regulatory mechanisms of m6A modification in the occurrence and development of AD. In addition, the article discusses recent research techniques related to animal models of m6A and AD. Furthermore, it discusses the possibility of studying the pathogenesis of AD at the level of the epitranscriptome, identifying early diagnostic markers, and screening for effective treatment options.
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Affiliation(s)
- Lei Xia
- Guangxi Scientific Experimental Center of Traditional Chinese Medicine, Guangxi University of Chinese Medicine, Nanning, China
- Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Nanning, China
- Guangxi Collaborative Innovation Center of Study on Functional Ingredients of Agricultural Residues, Nanning, China
| | - Fan Zhang
- Guangxi Scientific Experimental Center of Traditional Chinese Medicine, Guangxi University of Chinese Medicine, Nanning, China
- Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Nanning, China
- Guangxi Collaborative Innovation Center of Study on Functional Ingredients of Agricultural Residues, Nanning, China
- Guangxi International Zhang Medicine Hospital Affiliated to Gungxi University of Chinese Medicine, Nanning, China
- Guangxi Key Laboratory of TCM Formulas Theory and Transformation for Damp Diseases, Guangxi University of Chinese Medicine, Nanning, China
| | - Yulu Li
- Guangxi Scientific Experimental Center of Traditional Chinese Medicine, Guangxi University of Chinese Medicine, Nanning, China
- Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Nanning, China
- Guangxi Collaborative Innovation Center of Study on Functional Ingredients of Agricultural Residues, Nanning, China
| | - Yuemi Mo
- Guangxi Scientific Experimental Center of Traditional Chinese Medicine, Guangxi University of Chinese Medicine, Nanning, China
- Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Nanning, China
- Guangxi Collaborative Innovation Center of Study on Functional Ingredients of Agricultural Residues, Nanning, China
| | - Lingqiu Zhang
- Guangxi Scientific Experimental Center of Traditional Chinese Medicine, Guangxi University of Chinese Medicine, Nanning, China
- Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Nanning, China
- Guangxi Collaborative Innovation Center of Study on Functional Ingredients of Agricultural Residues, Nanning, China
| | - Qianhua Li
- Guangxi Scientific Experimental Center of Traditional Chinese Medicine, Guangxi University of Chinese Medicine, Nanning, China
- Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Nanning, China
- Guangxi Collaborative Innovation Center of Study on Functional Ingredients of Agricultural Residues, Nanning, China
| | - Minghuang Luo
- Guangxi Scientific Experimental Center of Traditional Chinese Medicine, Guangxi University of Chinese Medicine, Nanning, China
- Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Nanning, China
- Guangxi Collaborative Innovation Center of Study on Functional Ingredients of Agricultural Residues, Nanning, China
| | - Xiaotao Hou
- Guangxi Scientific Experimental Center of Traditional Chinese Medicine, Guangxi University of Chinese Medicine, Nanning, China
- Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Nanning, China
- Guangxi Collaborative Innovation Center of Study on Functional Ingredients of Agricultural Residues, Nanning, China
- Guangxi Key Laboratory of TCM Formulas Theory and Transformation for Damp Diseases, Guangxi University of Chinese Medicine, Nanning, China
| | - Zhengcai Du
- Guangxi Scientific Experimental Center of Traditional Chinese Medicine, Guangxi University of Chinese Medicine, Nanning, China
- Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Nanning, China
- Guangxi Collaborative Innovation Center of Study on Functional Ingredients of Agricultural Residues, Nanning, China
- Guangxi Key Laboratory of TCM Formulas Theory and Transformation for Damp Diseases, Guangxi University of Chinese Medicine, Nanning, China
| | - Jiagang Deng
- Guangxi Scientific Experimental Center of Traditional Chinese Medicine, Guangxi University of Chinese Medicine, Nanning, China
- Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Nanning, China
- Guangxi Collaborative Innovation Center of Study on Functional Ingredients of Agricultural Residues, Nanning, China
- Guangxi Key Laboratory of TCM Formulas Theory and Transformation for Damp Diseases, Guangxi University of Chinese Medicine, Nanning, China
| | - Erwei Hao
- Guangxi Scientific Experimental Center of Traditional Chinese Medicine, Guangxi University of Chinese Medicine, Nanning, China
- Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Nanning, China
- Guangxi Collaborative Innovation Center of Study on Functional Ingredients of Agricultural Residues, Nanning, China
- Guangxi Key Laboratory of TCM Formulas Theory and Transformation for Damp Diseases, Guangxi University of Chinese Medicine, Nanning, China
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30
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Azbazdar Y, Poyraz YK, Ozalp O, Nazli D, Ipekgil D, Cucun G, Ozhan G. High-fat diet feeding triggers a regenerative response in the adult zebrafish brain. Mol Neurobiol 2023; 60:2486-2506. [PMID: 36670270 DOI: 10.1007/s12035-023-03210-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Accepted: 01/04/2023] [Indexed: 01/22/2023]
Abstract
Non-alcoholic fatty liver disease (NAFLD) includes a range of liver conditions ranging from excess fat accumulation to liver failure. NAFLD is strongly associated with high-fat diet (HFD) consumption that constitutes a metabolic risk factor. While HFD has been elucidated concerning its several systemic effects, there is little information about its influence on the brain at the molecular level. Here, by using a high-fat diet (HFD)-feeding of adult zebrafish, we first reveal that excess fat uptake results in weight gain and fatty liver. Prolonged exposure to HFD induces a significant increase in the expression of pro-inflammation, apoptosis, and proliferation markers in the liver and brain tissues. Immunofluorescence analyses of the brain tissues disclose stimulation of apoptosis and widespread activation of glial cell response. Moreover, glial activation is accompanied by an initial decrease in the number of neurons and their subsequent replacement in the olfactory bulb and the telencephalon. Long-term consumption of HFD causes activation of Wnt/β-catenin signaling in the brain tissues. Finally, fish fed an HFD induces anxiety, and aggressiveness and increases locomotor activity. Thus, HFD feeding leads to a non-traumatic brain injury and stimulates a regenerative response. The activation mechanisms of a regeneration response in the brain can be exploited to fight obesity and recover from non-traumatic injuries.
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Affiliation(s)
- Yagmur Azbazdar
- Izmir Biomedicine and Genome Center (IBG), Dokuz Eylul University Health Campus, Inciralti-Balcova, 35340, Izmir, Turkey
- Izmir International Biomedicine and Genome Institute (IBG-Izmir), Dokuz Eylul University, Inciralti-Balcova, 35340, Izmir, Turkey
- Department of Biological Chemistry, University of California Los Angeles, Los Angeles, CA, 90095-1662, USA
| | - Yusuf Kaan Poyraz
- Izmir Biomedicine and Genome Center (IBG), Dokuz Eylul University Health Campus, Inciralti-Balcova, 35340, Izmir, Turkey
- Izmir International Biomedicine and Genome Institute (IBG-Izmir), Dokuz Eylul University, Inciralti-Balcova, 35340, Izmir, Turkey
| | - Ozgun Ozalp
- Izmir Biomedicine and Genome Center (IBG), Dokuz Eylul University Health Campus, Inciralti-Balcova, 35340, Izmir, Turkey
- Izmir International Biomedicine and Genome Institute (IBG-Izmir), Dokuz Eylul University, Inciralti-Balcova, 35340, Izmir, Turkey
- Department of Molecular Life Sciences, University of Zurich, CH-8057, Zurich, Switzerland
| | - Dilek Nazli
- Izmir Biomedicine and Genome Center (IBG), Dokuz Eylul University Health Campus, Inciralti-Balcova, 35340, Izmir, Turkey
- Izmir International Biomedicine and Genome Institute (IBG-Izmir), Dokuz Eylul University, Inciralti-Balcova, 35340, Izmir, Turkey
| | - Dogac Ipekgil
- Izmir Biomedicine and Genome Center (IBG), Dokuz Eylul University Health Campus, Inciralti-Balcova, 35340, Izmir, Turkey
- Izmir International Biomedicine and Genome Institute (IBG-Izmir), Dokuz Eylul University, Inciralti-Balcova, 35340, Izmir, Turkey
| | - Gokhan Cucun
- Izmir Biomedicine and Genome Center (IBG), Dokuz Eylul University Health Campus, Inciralti-Balcova, 35340, Izmir, Turkey
- Izmir International Biomedicine and Genome Institute (IBG-Izmir), Dokuz Eylul University, Inciralti-Balcova, 35340, Izmir, Turkey
- Institute of Biological and Chemical Systems-Biological Information Processing (IBCS-BIP), Karlsruhe Institute of Technology (KIT), 3640 76021, Karlsruhe, Postfach, Germany
| | - Gunes Ozhan
- Izmir Biomedicine and Genome Center (IBG), Dokuz Eylul University Health Campus, Inciralti-Balcova, 35340, Izmir, Turkey.
- Izmir International Biomedicine and Genome Institute (IBG-Izmir), Dokuz Eylul University, Inciralti-Balcova, 35340, Izmir, Turkey.
- Department of Molecular Biology and Genetics, Izmir Institute of Technology, Urla, 35430, Izmir, Turkey.
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31
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Hoffmann M, Gerlach S, Takamiya M, Tarazi S, Hersch N, Csiszár A, Springer R, Dreissen G, Scharr H, Rastegar S, Beil T, Strähle U, Merkel R, Hoffmann B. Smuggling on the Nanoscale-Fusogenic Liposomes Enable Efficient RNA-Transfer with Negligible Immune Response In Vitro and In Vivo. Pharmaceutics 2023; 15:pharmaceutics15041210. [PMID: 37111695 PMCID: PMC10146161 DOI: 10.3390/pharmaceutics15041210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 04/04/2023] [Accepted: 04/05/2023] [Indexed: 04/29/2023] Open
Abstract
The efficient and biocompatible transfer of nucleic acids into mammalian cells for research applications or medical purposes is a long-standing, challenging task. Viral transduction is the most efficient transfer system, but often entails high safety levels for research and potential health impairments for patients in medical applications. Lipo- or polyplexes are commonly used transfer systems but result in comparably low transfer efficiencies. Moreover, inflammatory responses caused by cytotoxic side effects were reported for these transfer methods. Often accountable for these effects are various recognition mechanisms for transferred nucleic acids. Using commercially available fusogenic liposomes (Fuse-It-mRNA), we established highly efficient and fully biocompatible transfer of RNA molecules for in vitro as well as in vivo applications. We demonstrated bypassing of endosomal uptake routes and, therefore, of pattern recognition receptors that recognize nucleic acids with high efficiency. This may underlie the observed almost complete abolishment of inflammatory cytokine responses. RNA transfer experiments into zebrafish embryos and adult animals fully confirmed the functional mechanism and the wide range of applications from single cells to organisms.
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Affiliation(s)
- Marco Hoffmann
- IBI-2: Mechanobiology, Institute of Biological Information Processing, Forschungszentrum Jülich, 52428 Jülich, Germany
| | - Sven Gerlach
- IBI-2: Mechanobiology, Institute of Biological Information Processing, Forschungszentrum Jülich, 52428 Jülich, Germany
| | - Masanari Takamiya
- Institute of Biological and Chemical Systems-Biological Information Processing (IBCS-BIP), Karlsruhe Institute of Technology (KIT), Postfach 3640, 76021 Karlsruhe, Germany
| | - Samar Tarazi
- IBI-2: Mechanobiology, Institute of Biological Information Processing, Forschungszentrum Jülich, 52428 Jülich, Germany
| | - Nils Hersch
- IBI-2: Mechanobiology, Institute of Biological Information Processing, Forschungszentrum Jülich, 52428 Jülich, Germany
| | - Agnes Csiszár
- IBI-2: Mechanobiology, Institute of Biological Information Processing, Forschungszentrum Jülich, 52428 Jülich, Germany
| | - Ronald Springer
- IBI-2: Mechanobiology, Institute of Biological Information Processing, Forschungszentrum Jülich, 52428 Jülich, Germany
| | - Georg Dreissen
- IBI-2: Mechanobiology, Institute of Biological Information Processing, Forschungszentrum Jülich, 52428 Jülich, Germany
| | - Hanno Scharr
- IAS-8: Data Analytics and Machine Learning, Institute for Advanced Simulation, Forschungszentrum Jülich, 52428 Jülich, Germany
| | - Sepand Rastegar
- Institute of Biological and Chemical Systems-Biological Information Processing (IBCS-BIP), Karlsruhe Institute of Technology (KIT), Postfach 3640, 76021 Karlsruhe, Germany
| | - Tanja Beil
- Institute of Biological and Chemical Systems-Biological Information Processing (IBCS-BIP), Karlsruhe Institute of Technology (KIT), Postfach 3640, 76021 Karlsruhe, Germany
| | - Uwe Strähle
- Institute of Biological and Chemical Systems-Biological Information Processing (IBCS-BIP), Karlsruhe Institute of Technology (KIT), Postfach 3640, 76021 Karlsruhe, Germany
| | - Rudolf Merkel
- IBI-2: Mechanobiology, Institute of Biological Information Processing, Forschungszentrum Jülich, 52428 Jülich, Germany
| | - Bernd Hoffmann
- IBI-2: Mechanobiology, Institute of Biological Information Processing, Forschungszentrum Jülich, 52428 Jülich, Germany
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32
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Kraus A, Garcia B, Ma J, Herrera KJ, Zwaka H, Harpaz R, Wong RY, Engert F, Salinas I. Olfactory detection of viruses shapes brain immunity and behavior in zebrafish. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.03.17.533129. [PMID: 37034630 PMCID: PMC10081220 DOI: 10.1101/2023.03.17.533129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Olfactory sensory neurons (OSNs) are constantly exposed to pathogens, including viruses. However, serious brain infection via the olfactory route rarely occurs. When OSNs detect a virus, they coordinate local antiviral immune responses to stop virus progression to the brain. Despite effective immune control in the olfactory periphery, pathogen-triggered neuronal signals reach the CNS via the olfactory bulb (OB). We hypothesized that neuronal detection of a virus by OSNs initiates neuroimmune responses in the OB that prevent pathogen invasion. Using zebrafish ( Danio rerio ) as a model, we demonstrate viral-specific neuronal activation of OSNs projecting into the OB, indicating that OSNs are electrically activated by viruses. Further, behavioral changes are seen in both adult and larval zebrafish after viral exposure. By profiling the transcription of single cells in the OB after OSNs are exposed to virus, we found that both microglia and neurons enter a protective state. Microglia and macrophage populations in the OB respond within minutes of nasal viral delivery followed decreased expression of neuronal differentiation factors and enrichment of genes in the neuropeptide signaling pathway in neuronal clusters. Pituitary adenylate-cyclase-activating polypeptide ( pacap ), a known antimicrobial, was especially enriched in a neuronal cluster. We confirm that PACAP is antiviral in vitro and that PACAP expression increases in the OB 1 day post-viral treatment. Our work reveals how encounters with viruses in the olfactory periphery shape the vertebrate brain by inducing antimicrobial programs in neurons and by altering host behavior.
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33
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Tanikawa S, Ebisu Y, Sedlačík T, Semba S, Nonoyama T, Kurokawa T, Hirota A, Takahashi T, Yamaguchi K, Imajo M, Kato H, Nishimura T, Tanei ZI, Tsuda M, Nemoto T, Gong JP, Tanaka S. Engineering of an electrically charged hydrogel implanted into a traumatic brain injury model for stepwise neuronal tissue reconstruction. Sci Rep 2023; 13:2233. [PMID: 36788295 PMCID: PMC9929269 DOI: 10.1038/s41598-023-28870-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Accepted: 01/25/2023] [Indexed: 02/16/2023] Open
Abstract
Neural regeneration is extremely difficult to achieve. In traumatic brain injuries, the loss of brain parenchyma volume hinders neural regeneration. In this study, neuronal tissue engineering was performed by using electrically charged hydrogels composed of cationic and anionic monomers in a 1:1 ratio (C1A1 hydrogel), which served as an effective scaffold for the attachment of neural stem cells (NSCs). In the 3D environment of porous C1A1 hydrogels engineered by the cryogelation technique, NSCs differentiated into neuroglial cells. The C1A1 porous hydrogel was implanted into brain defects in a mouse traumatic damage model. The VEGF-immersed C1A1 porous hydrogel promoted host-derived vascular network formation together with the infiltration of macrophages/microglia and astrocytes into the gel. Furthermore, the stepwise transplantation of GFP-labeled NSCs supported differentiation towards glial and neuronal cells. Therefore, this two-step method for neural regeneration may become a new approach for therapeutic brain tissue reconstruction after brain damage in the future.
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Affiliation(s)
- Satoshi Tanikawa
- Department of Cancer Pathology, Faculty of Medicine, Hokkaido University, N15, W7, Sapporo, 060-8638, Japan.,Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, N21, W10, Sapporo, 001-0021, Japan
| | - Yuki Ebisu
- Department of Cancer Pathology, Faculty of Medicine, Hokkaido University, N15, W7, Sapporo, 060-8638, Japan
| | - Tomáš Sedlačík
- Faculty of Advanced Life Science, Hokkaido University, N21, W11, Sapporo, 001-0021, Japan
| | - Shingo Semba
- Department of Cancer Pathology, Faculty of Medicine, Hokkaido University, N15, W7, Sapporo, 060-8638, Japan
| | - Takayuki Nonoyama
- Faculty of Advanced Life Science, Hokkaido University, N21, W11, Sapporo, 001-0021, Japan
| | - Takayuki Kurokawa
- Faculty of Advanced Life Science, Hokkaido University, N21, W11, Sapporo, 001-0021, Japan
| | - Akira Hirota
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, N21, W10, Sapporo, 001-0021, Japan
| | - Taiga Takahashi
- Research Institute for Electronic Science, Hokkaido University, N21, W11, Sapporo, 001-0021, Japan.,Biophotonics Research Group, Exploratory Research Center on Life and Living Systems (ExCELLS) and National Institute for Physiological Sciences, National Institutes of Natural Sciences, Higashiyama 5-1, Myodaiji, Okazaki, Aichi, 444-8787, Japan
| | - Kazushi Yamaguchi
- Research Institute for Electronic Science, Hokkaido University, N21, W11, Sapporo, 001-0021, Japan.,Biophotonics Research Group, Exploratory Research Center on Life and Living Systems (ExCELLS) and National Institute for Physiological Sciences, National Institutes of Natural Sciences, Higashiyama 5-1, Myodaiji, Okazaki, Aichi, 444-8787, Japan
| | - Masamichi Imajo
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, N21, W10, Sapporo, 001-0021, Japan
| | - Hinako Kato
- Graduate School of Life Science, Hokkaido University, N21, W11, Sapporo, Japan, 001-0021
| | - Takuya Nishimura
- Graduate School of Life Science, Hokkaido University, N21, W11, Sapporo, Japan, 001-0021
| | - Zen-Ichi Tanei
- Department of Cancer Pathology, Faculty of Medicine, Hokkaido University, N15, W7, Sapporo, 060-8638, Japan
| | - Masumi Tsuda
- Department of Cancer Pathology, Faculty of Medicine, Hokkaido University, N15, W7, Sapporo, 060-8638, Japan.,Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, N21, W10, Sapporo, 001-0021, Japan.,Research Institute for Electronic Science, Hokkaido University, N21, W11, Sapporo, 001-0021, Japan
| | - Tomomi Nemoto
- Research Institute for Electronic Science, Hokkaido University, N21, W11, Sapporo, 001-0021, Japan.,Biophotonics Research Group, Exploratory Research Center on Life and Living Systems (ExCELLS) and National Institute for Physiological Sciences, National Institutes of Natural Sciences, Higashiyama 5-1, Myodaiji, Okazaki, Aichi, 444-8787, Japan
| | - Jian Ping Gong
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, N21, W10, Sapporo, 001-0021, Japan.,Faculty of Advanced Life Science, Hokkaido University, N21, W11, Sapporo, 001-0021, Japan
| | - Shinya Tanaka
- Department of Cancer Pathology, Faculty of Medicine, Hokkaido University, N15, W7, Sapporo, 060-8638, Japan. .,Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, N21, W10, Sapporo, 001-0021, Japan.
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34
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Konar G, Flickinger Z, Sharma S, Vallone K, Lyon C, Doshier C, Lyon W, Patton JG. Damage-induced senescent immune cells regulate regeneration of the zebrafish retina. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.01.16.524296. [PMID: 36711649 PMCID: PMC9882244 DOI: 10.1101/2023.01.16.524296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Zebrafish spontaneously regenerate their retina in response to damage through the action of Müller glia. Even though Müller glia (MG) are conserved in higher vertebrates, the capacity to regenerate retinal damage is lost. Recent work has focused on the regulation of inflammation during tissue regeneration with precise temporal roles for macrophages and microglia. Senescent cells that have withdrawn from the cell cycle have mostly been implicated in aging, but are still metabolically active, releasing proinflammatory signaling molecules as part of the Senescence Associated Secretory Phenotype (SASP). Here, we discover that in response to retinal damage, a subset of cells expressing markers of microglia/macrophages also express markers of senescence. These cells display a temporal pattern of appearance and clearance during retina regeneration. Premature removal of senescent cells by senolytic treatment led to a decrease in proliferation and incomplete repair of the ganglion cell layer after NMDA damage. Our results demonstrate a role for modulation of senescent cell responses to balance inflammation, regeneration, plasticity, and repair as opposed to fibrosis and scarring.
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Affiliation(s)
| | | | - Shivani Sharma
- Department of Biological Sciences, Vanderbilt University, Nashville TN, USA
| | - Kyle Vallone
- Department of Biological Sciences, Vanderbilt University, Nashville TN, USA
| | - Charles Lyon
- Department of Biological Sciences, Vanderbilt University, Nashville TN, USA
| | - Claire Doshier
- Department of Biological Sciences, Vanderbilt University, Nashville TN, USA
| | - William Lyon
- Department of Biological Sciences, Vanderbilt University, Nashville TN, USA
| | - James G. Patton
- Department of Biological Sciences, Vanderbilt University, Nashville TN, USA
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35
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Carvajal Ibañez D, Skabkin M, Hooli J, Cerrizuela S, Göpferich M, Jolly A, Volk K, Zumwinkel M, Bertolini M, Figlia G, Höfer T, Kramer G, Anders S, Teleman AA, Marciniak-Czochra A, Martin-Villalba A. Interferon regulates neural stem cell function at all ages by orchestrating mTOR and cell cycle. EMBO Mol Med 2023; 15:e16434. [PMID: 36636818 PMCID: PMC10086582 DOI: 10.15252/emmm.202216434] [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: 06/12/2022] [Revised: 12/15/2022] [Accepted: 12/16/2022] [Indexed: 01/14/2023] Open
Abstract
Stem cells show intrinsic interferon signalling, which protects them from viral infections at all ages. In the ageing brain, interferon signalling also reduces the ability of stem cells to activate. Whether these functions are linked and at what time interferons start taking on a role in stem cell functioning is unknown. Additionally, the molecular link between interferons and activation in neural stem cells and how this relates to progenitor production is not well understood. Here we combine single-cell transcriptomics, RiboSeq and mathematical models of interferon to show that this pathway is important for proper stem cell function at all ages in mice. Interferon orchestrates cell cycle and mTOR activity to post-transcriptionally repress Sox2 and induces quiescence. The interferon response then decreases in the subsequent maturation states. Mathematical simulations indicate that this regulation is beneficial for the young and harmful for the old brain. Our study establishes molecular mechanisms of interferon in stem cells and interferons as genuine regulators of stem cell homeostasis and a potential therapeutic target to repair the ageing brain.
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Affiliation(s)
- Damian Carvajal Ibañez
- Division of Molecular Neurobiology, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Faculty of Biosciences, Heidelberg University, Heidelberg, Germany
| | - Maxim Skabkin
- Division of Molecular Neurobiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Jooa Hooli
- Division of Molecular Neurobiology, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Faculty of Biosciences, Heidelberg University, Heidelberg, Germany.,Institute of Applied Mathematics, Heidelberg University, Heidelberg, Germany
| | - Santiago Cerrizuela
- Division of Molecular Neurobiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Manuel Göpferich
- Division of Molecular Neurobiology, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Faculty of Biosciences, Heidelberg University, Heidelberg, Germany
| | - Adrien Jolly
- Division of Theoretical Systems Biology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Katrin Volk
- Division of Molecular Neurobiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Marc Zumwinkel
- Division of Molecular Neurobiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Matilde Bertolini
- Center for Molecular Biology of Heidelberg University (ZMBH) & German Cancer Research Center (DKFZ), DKFZ-ZMBH Alliance, Heidelberg, Germany
| | - Gianluca Figlia
- Faculty of Biosciences, Heidelberg University, Heidelberg, Germany.,Division of Signal Transduction in Cancer and Metabolism, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Thomas Höfer
- Division of Theoretical Systems Biology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Guenter Kramer
- Center for Molecular Biology of Heidelberg University (ZMBH) & German Cancer Research Center (DKFZ), DKFZ-ZMBH Alliance, Heidelberg, Germany
| | - Simon Anders
- Bioquant, Heidelberg University, Heidelberg, Germany
| | - Aurelio A Teleman
- Division of Signal Transduction in Cancer and Metabolism, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Anna Marciniak-Czochra
- Institute of Applied Mathematics, Heidelberg University, Heidelberg, Germany.,Interdisciplinary Center of Scientific Computing (IWR) and Bioquant, Heidelberg University, Heidelberg, Germany
| | - Ana Martin-Villalba
- Division of Molecular Neurobiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
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36
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Xu KF, Jia HR, Wang Z, Feng HH, Li LY, Zhang R, Durrani S, Lin F, Wu FG. See the Unseen: Red-Emissive Carbon Dots for Visualizing the Nucleolar Structures in Two Model Animals and In Vivo Drug Toxicity. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023:e2205890. [PMID: 36634974 DOI: 10.1002/smll.202205890] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Revised: 12/08/2022] [Indexed: 06/17/2023]
Abstract
Nucleolus, which participates in many crucial cellular activities, is an ideal target for evaluating the state of a cell or an organism. Here, bright red-emissive carbon dots (termed CPCDs) with excitation-independent/polarity-dependent fluorescence emission are synthesized by a one-step hydrothermal reaction between congo red and p-phenylenediamine. The CPCDs can achieve wash-free, real-time, long-term, and high-quality nucleolus imaging in live cells, as well as in vivo imaging of two common model animals-zebrafish and Caenorhabditis elegans (C. elegans). Strikingly, CPCDs realize the nucleolus imaging of organs/flowing blood cells in zebrafish at a cellular level for the first time, and the superb nucleolus imaging of C. elegans suggests that the germ cells in the spermatheca probably have no intact nuclei. These previously unachieved imaging results of the cells/tissues/organs may guide the zebrafish-related studies and benefit the research of C. elegans development. More importantly, a novel strategy based on CPCDs for in vivo toxicity evaluation of materials/drugs (e.g., Ag+ ), which can visualize the otherwise unseen injuries in zebrafish, is developed. In conclusion, the CPCDs represent a robust tool for visualizing the structures and dynamic behaviors of live zebrafish and C. elegans, and may find important applications in cell biology and toxicology.
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Affiliation(s)
- Ke-Fei Xu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, 2 Sipailou Road, Nanjing, 210096, P. R. China
| | - Hao-Ran Jia
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, 2 Sipailou Road, Nanjing, 210096, P. R. China
| | - Zihao Wang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, 2 Sipailou Road, Nanjing, 210096, P. R. China
| | - Hui-Heng Feng
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, 2 Sipailou Road, Nanjing, 210096, P. R. China
| | - Ling-Yi Li
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, 2 Sipailou Road, Nanjing, 210096, P. R. China
| | - Rufeng Zhang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, 2 Sipailou Road, Nanjing, 210096, P. R. China
| | - Samran Durrani
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, 2 Sipailou Road, Nanjing, 210096, P. R. China
| | - Fengming Lin
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, 2 Sipailou Road, Nanjing, 210096, P. R. China
| | - Fu-Gen Wu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, 2 Sipailou Road, Nanjing, 210096, P. R. China
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37
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Kundu S, Singh S. What Happens in TBI? A Wide Talk on Animal Models and Future Perspective. Curr Neuropharmacol 2023; 21:1139-1164. [PMID: 35794772 PMCID: PMC10286592 DOI: 10.2174/1570159x20666220706094248] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 05/05/2022] [Accepted: 05/11/2022] [Indexed: 11/22/2022] Open
Abstract
Traumatic brain injury (TBI) is a global healthcare concern and a leading cause of death. The most common causes of TBI include road accidents, sports injuries, violence in warzones, and falls. TBI induces neuronal cell death independent of age, gender, and genetic background. TBI survivor patients often experience long-term behavioral changes like cognitive and emotional changes. TBI affects social activity, reducing the quality and duration of life. Over the last 40 years, several rodent models have been developed to mimic different clinical outcomes of human TBI for a better understanding of pathophysiology and to check the efficacy of drugs used for TBI. However, promising neuroprotective approaches that have been used preclinically have been found to be less beneficial in clinical trials. So, there is an urgent need to find a suitable animal model for establishing a new therapeutic intervention useful for TBI. In this review, we have demonstrated the etiology of TBI and post- TBI social life alteration, and also discussed various preclinical TBI models of rodents, zebrafish, and drosophila.
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Affiliation(s)
- Satyabrata Kundu
- Department of Pharmacology, ISF College of Pharmacy, Moga, Punjab, India
| | - Shamsher Singh
- Department of Pharmacology, ISF College of Pharmacy, Moga, Punjab, India
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38
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Demin KA, Zabegalov KA, Kolesnikova TO, Galstyan DS, Kositsyn YMHB, Costa FV, de Abreu MS, Kalueff AV. Animal Inflammation-Based Models of Neuropsychiatric Disorders. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2023; 1411:91-104. [PMID: 36949307 DOI: 10.1007/978-981-19-7376-5_5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/24/2023]
Abstract
Mounting evidence links psychiatric disorders to central and systemic inflammation. Experimental (animal) models of psychiatric disorders are important tools for translational biopsychiatry research and CNS drug discovery. Current experimental models, most typically involving rodents, continue to reveal shared fundamental pathological pathways and biomarkers underlying the pathogenetic link between brain illnesses and neuroinflammation. Recent data also show that various proinflammatory factors can alter brain neurochemistry, modulating the levels of neurohormones and neurotrophins in neurons and microglia. The role of "active" glia in releasing a wide range of proinflammatory cytokines also implicates glial cells in various psychiatric disorders. Here, we discuss recent animal inflammation-related models of psychiatric disorders, focusing on their translational perspectives and the use of some novel promising model organisms (zebrafish), to better understand the evolutionally conservative role of inflammation in neuropsychiatric conditions.
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Affiliation(s)
- Konstantin A Demin
- Neurobiology Program, Sirius University of Science and Technology, Sochi, Russia
- Institute of Experimental Medicine, Almazov National Medical Research Centre, Ministry of Healthcare of Russian Federation, St. Petersburg, Russia
- Institute of Translational Biomedicine, St. Petersburg State University, St. Petersburg, Russia
| | | | | | - David S Galstyan
- Institute of Experimental Medicine, Almazov National Medical Research Centre, Ministry of Healthcare of Russian Federation, St. Petersburg, Russia
| | - Yuriy M H B Kositsyn
- Institute of Translational Biomedicine, St. Petersburg State University, St. Petersburg, Russia
| | - Fabiano V Costa
- Neurobiology Program, Sirius University of Science and Technology, Sochi, Russia
| | - Murilo S de Abreu
- Laboratory of Cell and Molecular Biology and Neurobiology, Moscow Institute of Physics and Technology, Moscow, Russia
| | - Allan V Kalueff
- Neurobiology Program, Sirius University of Science and Technology, Sochi, Russia
- Institute of Experimental Medicine, Almazov National Medical Research Centre, Ministry of Healthcare of Russian Federation, St. Petersburg, Russia
- Institute of Translational Biomedicine, St. Petersburg State University, St. Petersburg, Russia
- Laboratory of Cell and Molecular Biology and Neurobiology, Moscow Institute of Physics and Technology, Moscow, Russia
- Laboratory of Preclinical Bioscreening, Granov Russian Research Center of Radiology and Surgical Technologies, Ministry of Healthcare of Russian Federation, Pesochny, Russia
- Laboratory of Translational Biopsychiatry, Scientific Research Institute of Neuroscience and Medicine, Novosibirsk, Russia
- Ural Federal University, Ekaterinburg, Russia
- Novosibirsk State University, Novosibirsk, Russia
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Razmara P, Pyle GG. Impact of Copper Nanoparticles and Copper Ions on Transcripts Involved in Neural Repair Mechanisms in Rainbow Trout Olfactory Mucosa. ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2023; 84:18-31. [PMID: 36525054 DOI: 10.1007/s00244-022-00969-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Accepted: 11/22/2022] [Indexed: 06/17/2023]
Abstract
Olfactory mucosa is well known for its lifelong ability for regeneration. Regeneration of neurons and regrowth of severed axons are the most common neural repair mechanisms in olfactory mucosa. Nonetheless, exposure to neurotoxic contaminants, such as copper nanoparticles (CuNPs) and copper ions (Cu2+), may alter the reparative capacity of olfactory mucosa. Here, using RNA-sequencing, we investigated the molecular basis of neural repair mechanisms that were affected by CuNPs and Cu2+ in rainbow trout olfactory mucosa. The transcript profile of olfactory mucosa suggested that regeneration of neurons was inhibited by CuNPs. Exposure to CuNPs reduced the transcript abundances of pro-inflammatory proteins which are required to initiate neuroregeneration. Moreover, the transcript of genes encoding regeneration promoters, including canonical Wnt/β-catenin signaling proteins and developmental transcription factors, were downregulated in the CuNP-treated fish. The mRNA levels of genes regulating axonal regrowth, including the growth-promoting signals secreted from olfactory ensheathing cells, were mainly increased in the CuNP treatment. However, the reduced transcript abundances of a few cell adhesion molecules and neural polarity genes may restrict axonogenesis in the CuNP-exposed olfactory mucosa. In the Cu2+-treated olfactory mucosa, both neural repair strategies were initiated at the transcript level. The stimulation of repair mechanisms can lead to the recovery of Cu2+-induced olfactory dysfunction. These results indicated CuNPs and Cu2+ differentially affected the neural repair mechanism in olfactory mucosa. Exposure to CuNP had greater effects on the expression of genes involved in olfactory repair mechanisms relative to Cu2+ and dysregulated the transcripts associated with stem cell proliferation and neural reconstitution.
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Affiliation(s)
- Parastoo Razmara
- Department of Biological Sciences, University of Lethbridge, Lethbridge, AB, Canada.
- Department of Biological Sciences, University of Alberta, Edmonton, AB, Canada.
| | - Gregory G Pyle
- Department of Biological Sciences, University of Lethbridge, Lethbridge, AB, Canada
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Endothelial cells regulate astrocyte to neural progenitor cell trans-differentiation in a mouse model of stroke. Nat Commun 2022; 13:7812. [PMID: 36535938 PMCID: PMC9763251 DOI: 10.1038/s41467-022-35498-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Accepted: 12/07/2022] [Indexed: 12/23/2022] Open
Abstract
The concept of the neurovascular unit emphasizes the importance of cell-cell signaling between neural, glial, and vascular compartments. In neurogenesis, for example, brain endothelial cells play a key role by supplying trophic support to neural progenitors. Here, we describe a surprising phenomenon where brain endothelial cells may release trans-differentiation signals that convert astrocytes into neural progenitor cells in male mice after stroke. After oxygen-glucose deprivation, brain endothelial cells release microvesicles containing pro-neural factor Ascl1 that enter into astrocytes to induce their trans-differentiation into neural progenitors. In mouse models of focal cerebral ischemia, Ascl1 is upregulated in endothelium prior to astrocytic conversion into neural progenitor cells. Injecting brain endothelial-derived microvesicles amplifies the process of astrocyte trans-differentiation. Endothelial-specific overexpression of Ascl1 increases the local conversion of astrocytes into neural progenitors and improves behavioral recovery. Our findings describe an unexpected vascular-regulated mechanism of neuroplasticity that may open up therapeutic opportunities for improving outcomes after stroke.
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TDP-43 condensates and lipid droplets regulate the reactivity of microglia and regeneration after traumatic brain injury. Nat Neurosci 2022; 25:1608-1625. [PMID: 36424432 DOI: 10.1038/s41593-022-01199-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 10/11/2022] [Indexed: 11/27/2022]
Abstract
Decreasing the activation of pathology-activated microglia is crucial to prevent chronic inflammation and tissue scarring. In this study, we used a stab wound injury model in zebrafish and identified an injury-induced microglial state characterized by the accumulation of lipid droplets and TAR DNA-binding protein of 43 kDa (TDP-43)+ condensates. Granulin-mediated clearance of both lipid droplets and TDP-43+ condensates was necessary and sufficient to promote the return of microglia back to the basal state and achieve scarless regeneration. Moreover, in postmortem cortical brain tissues from patients with traumatic brain injury, the extent of microglial activation correlated with the accumulation of lipid droplets and TDP-43+ condensates. Together, our results reveal a mechanism required for restoring microglia to a nonactivated state after injury, which has potential for new therapeutic applications in humans.
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Angileri KM, Bagia NA, Feschotte C. Transposon control as a checkpoint for tissue regeneration. Development 2022; 149:dev191957. [PMID: 36440631 PMCID: PMC10655923 DOI: 10.1242/dev.191957] [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: 03/11/2022] [Accepted: 10/03/2022] [Indexed: 11/29/2022]
Abstract
Tissue regeneration requires precise temporal control of cellular processes such as inflammatory signaling, chromatin remodeling and proliferation. The combination of these processes forms a unique microenvironment permissive to the expression, and potential mobilization of, transposable elements (TEs). Here, we develop the hypothesis that TE activation creates a barrier to tissue repair that must be overcome to achieve successful regeneration. We discuss how uncontrolled TE activity may impede tissue restoration and review mechanisms by which TE activity may be controlled during regeneration. We posit that the diversification and co-evolution of TEs and host control mechanisms may contribute to the wide variation in regenerative competency across tissues and species.
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Affiliation(s)
- Krista M. Angileri
- Department of Molecular Biology and Genetics, Cornell University, 526 Campus Rd, Ithaca, NY 14850, USA
| | - Nornubari A. Bagia
- Department of Molecular Biology and Genetics, Cornell University, 526 Campus Rd, Ithaca, NY 14850, USA
| | - Cedric Feschotte
- Department of Molecular Biology and Genetics, Cornell University, 526 Campus Rd, Ithaca, NY 14850, USA
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Franklin RJM, Simons M. CNS remyelination and inflammation: From basic mechanisms to therapeutic opportunities. Neuron 2022; 110:3549-3565. [PMID: 36228613 DOI: 10.1016/j.neuron.2022.09.023] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 09/09/2022] [Accepted: 09/19/2022] [Indexed: 11/06/2022]
Abstract
Remyelination, the myelin regenerative response that follows demyelination, restores saltatory conduction and function and sustains axon health. Its declining efficiency with disease progression in the chronic autoimmune disease multiple sclerosis (MS) contributes to the currently untreatable progressive phase of the disease. Although some of the bona fide myelin regenerative medicine clinical trials have succeeded in demonstrating proof-of-principle, none of these compounds have yet proceeded toward approval. There therefore remains a need to increase our understanding of the fundamental biology of remyelination so that existing targets can be refined and new ones discovered. Here, we review the role of inflammation, in particular innate immunity, in remyelination, describing its many and complex facets and discussing how our evolving understanding can be harnessed to translational goals.
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Affiliation(s)
- Robin J M Franklin
- Altos Labs - Cambridge Institute of Science, Granta Park, Cambridge CB21 6GP, UK.
| | - Mikael Simons
- Institute of Neuronal Cell Biology, Technical University Munich, Munich, Germany; German Center for Neurodegenerative Diseases, Munich, Germany; Cluster of Systems Neurology (SyNergy), Munich, Germany; Institute for Stroke and Dementia Research, Munich, Germany.
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Sîrbulescu RF, Ilieş I, Amelung L, Zupanc GKH. Proteomic characterization of spontaneously regrowing spinal cord following injury in the teleost fish Apteronotus leptorhynchus, a regeneration-competent vertebrate. J Comp Physiol A Neuroethol Sens Neural Behav Physiol 2022; 208:671-706. [PMID: 36445471 DOI: 10.1007/s00359-022-01591-w] [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: 10/03/2022] [Revised: 10/30/2022] [Accepted: 11/01/2022] [Indexed: 11/30/2022]
Abstract
In adult mammals, spontaneous repair after spinal cord injury (SCI) is severely limited. By contrast, teleost fish successfully regenerate injured axons and produce new neurons from adult neural stem cells after SCI. The molecular mechanisms underlying this high regenerative capacity are largely unknown. The present study addresses this gap by examining the temporal dynamics of proteome changes in response to SCI in the brown ghost knifefish (Apteronotus leptorhynchus). Two-dimensional difference gel electrophoresis (2D DIGE) was combined with matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) and tandem mass spectrometry (MS/MS) to collect data during early (1 day), mid (10 days), and late (30 days) phases of regeneration following caudal amputation SCI. Forty-two unique proteins with significant differences in abundance between injured and intact control samples were identified. Correlation analysis uncovered six clusters of spots with similar expression patterns over time and strong conditional dependences, typically within functional families or between isoforms. Significantly regulated proteins were associated with axon development and regeneration; proliferation and morphogenesis; neuronal differentiation and re-establishment of neural connections; promotion of neuroprotection, redox homeostasis, and membrane repair; and metabolism or energy supply. Notably, at all three time points examined, significant regulation of proteins involved in inflammatory responses was absent.
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Affiliation(s)
- Ruxandra F Sîrbulescu
- School of Engineering and Science, Jacobs University Bremen, 28725, Bremen, Germany
- Laboratory of Neurobiology, Department of Biology, Northeastern University, Boston, MA, 02115, USA
- Vaccine and Immunotherapy Center, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02129, USA
| | - Iulian Ilieş
- School of Humanities and Social Sciences, Jacobs University Bremen, 28725, Bremen, Germany
- Laboratory of Neurobiology, Department of Biology, Northeastern University, Boston, MA, 02115, USA
| | - Lisa Amelung
- Laboratory of Neurobiology, Department of Biology, Northeastern University, Boston, MA, 02115, USA
| | - Günther K H Zupanc
- School of Engineering and Science, Jacobs University Bremen, 28725, Bremen, Germany.
- Laboratory of Neurobiology, Department of Biology, Northeastern University, Boston, MA, 02115, USA.
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Caloric restriction reinforces the stem cell pool in the aged brain without affecting overall proliferation status. Gene X 2022; 851:147026. [DOI: 10.1016/j.gene.2022.147026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 09/21/2022] [Accepted: 10/27/2022] [Indexed: 11/08/2022] Open
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Narra SS, Rondeau P, Fernezelian D, Gence L, Ghaddar B, Bourdon E, Lefebvre d'Hellencourt C, Rastegar S, Diotel N. Distribution of microglia/immune cells in the brain of adult zebrafish in homeostatic and regenerative conditions: Focus on oxidative stress during brain repair. J Comp Neurol 2022; 531:238-255. [PMID: 36282721 DOI: 10.1002/cne.25421] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Revised: 09/14/2022] [Accepted: 09/16/2022] [Indexed: 11/08/2022]
Abstract
Microglia are macrophage-like cells exerting determinant roles in neuroinflammatory and oxidative stress processes during brain regeneration. We used zebrafish as a model of brain plasticity and repair. First, by performing L-plastin (Lcp1) immunohistochemistry and using transgenic Tg(mpeg1.1:GFP) or Tg(mpeg1.1:mCherry) fish, we analyzed the distribution of microglia/immune cells in the whole brain. Specific regional differences were evidenced in terms of microglia/immune cell density and morphology (elongated, branched, highly branched, and amoeboid). Taking advantage of Tg(fli:GFP) and Tg(GFAP::GFP) enabling the detection of endothelial cells and neural stem cells (NSCs), we highlighted the association of elongated microglia/immune cells with blood vessels and rounded/amoeboid microglia with NSCs. Second, after telencephalic injury, we showed that L-plastin cells were still abundantly present at 5 days post-lesion (dpl) and were associated with regenerative neurogenesis. Finally, RNA-sequencing analysis from injured telencephalon (5 dpl) confirmed the upregulation of microglia/immune cell markers and highlighted a significant increase of genes involved in oxidative stress (nox2, nrf2a, and gsr). The analysis of antioxidant activities at 5 dpl also revealed an upregulation of superoxide dismutase and persistent H2 O2 generation in the injured telencephalon. Also, microglia/immune cells were shown to be a source of oxidative stress at 5 dpl. Overall, our data provide a better characterization of microglia/immune cell distribution in the healthy zebrafish brain, highlighting some evolutionarily conserved features with mammals. They also emphasize that 5 days after injury, microglia/immune cells are still activated and are associated to a persistent redox imbalance. Together, these data raise the question of the role of oxidative stress in regenerative neurogenesis in zebrafish.
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Affiliation(s)
- Sai Sandhya Narra
- Université de La Réunion, INSERM, UMR 1188, Diabète athérothrombose Thérapies Réunion Océan Indien (DéTROI) Saint‐Denis de La Réunion France
| | - Philippe Rondeau
- Université de La Réunion, INSERM, UMR 1188, Diabète athérothrombose Thérapies Réunion Océan Indien (DéTROI) Saint‐Denis de La Réunion France
| | - Danielle Fernezelian
- Université de La Réunion, INSERM, UMR 1188, Diabète athérothrombose Thérapies Réunion Océan Indien (DéTROI) Saint‐Denis de La Réunion France
| | - Laura Gence
- Université de La Réunion, INSERM, UMR 1188, Diabète athérothrombose Thérapies Réunion Océan Indien (DéTROI) Saint‐Denis de La Réunion France
| | - Batoul Ghaddar
- Université de La Réunion, INSERM, UMR 1188, Diabète athérothrombose Thérapies Réunion Océan Indien (DéTROI) Saint‐Denis de La Réunion France
| | - Emmanuel Bourdon
- Université de La Réunion, INSERM, UMR 1188, Diabète athérothrombose Thérapies Réunion Océan Indien (DéTROI) Saint‐Denis de La Réunion France
| | - Christian Lefebvre d'Hellencourt
- Université de La Réunion, INSERM, UMR 1188, Diabète athérothrombose Thérapies Réunion Océan Indien (DéTROI) Saint‐Denis de La Réunion France
| | - Sepand Rastegar
- Institute of Biological and Chemical Systems‐Biological Information Processing (IBCS‐BIP), Karlsruhe Institute of Technology (KIT) Karlsruhe Germany
| | - Nicolas Diotel
- Université de La Réunion, INSERM, UMR 1188, Diabète athérothrombose Thérapies Réunion Océan Indien (DéTROI) Saint‐Denis de La Réunion France
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Assessing the Neurotoxicity of a Sub-Optimal Dose of Rotenone in Zebrafish (Danio rerio) and the Possible Neuroactive Potential of Valproic Acid, Combination of Levodopa and Carbidopa, and Lactic Acid Bacteria Strains. Antioxidants (Basel) 2022; 11:antiox11102040. [PMID: 36290763 PMCID: PMC9598446 DOI: 10.3390/antiox11102040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 10/03/2022] [Accepted: 10/13/2022] [Indexed: 11/20/2022] Open
Abstract
Parkinson’s disease (PD) is an enigmatic neurodegenerative disorder that is currently the subject of extensive research approaches aiming at deepening the understanding of its etiopathophysiology. Recent data suggest that distinct compounds used either as anticonvulsants or agents usually used as dopaminergic agonists or supplements consisting of live active lactic acid bacteria strains might alleviate and improve PD-related phenotypes. This is why we aimed to elucidate how the administration of rotenone (ROT) disrupts homeostasis and the possible neuroactive potential of valproic acid (VPA), antiparkinsonian agents (levodopa and carbidopa – LEV+CARB), and a mixture of six Lactobacillus and three Bifidobacterium species (PROBIO) might re-establish the optimal internal parameters. ROT causes significant changes in the central nervous system (CNS), notably reduced neurogenesis and angiogenesis, by triggering apoptosis, reflected by the increased expression of PARKIN and PINK1 gene(s), low brain dopamine (DA) levels, and as opposed to LRRK2 and SNCA compared with healthy zebrafish. VPA, LEV/CARB, and PROBIO sustain neurogenesis and angiogenesis, manifesting a neuroprotective role in diminishing the effect of ROT in zebrafish. Interestingly, none of the tested compounds influenced oxidative stress (OS), as reflected by the level of malondialdehyde (MDA) level and superoxide dismutase (SOD) enzymatic activity revealed in non-ROT-exposed zebrafish. Overall, the selected concentrations were enough to trigger particular behavioral patterns as reflected by our parameters of interest (swimming distance (mm), velocity (mm/s), and freezing episodes (s)), but sequential testing is mandatory to decipher whether they exert an inhibitory role following ROT exposure. In this way, we further offer data into how ROT may trigger a PD-related phenotype and the possible beneficial role of VPA, LEV+CARB, and PROBIO in re-establishing homeostasis in Danio rerio.
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Gui Y, Qin K, Zhang Y, Bian X, Wang Z, Han D, Peng Y, Yan H, Gao Z. Quercetin improves rapid endothelialization and inflammatory microenvironment in electrospun vascular grafts. Biomed Mater 2022; 17. [DOI: 10.1088/1748-605x/ac9266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Accepted: 09/15/2022] [Indexed: 11/11/2022]
Abstract
Abstract
There is a great need for small diameter vascular grafts among patients with cardiovascular diseases annually. However, continuous foreign body reactions and fibrosis capsules brought by biomaterials are both prone to poor vascular tissue regeneration. To address this problem, we fabricated a polycaprolactone (PCL) vascular graft incorporated with quercetin (PCL/QCT graft) in this study. In vitro cell assay showed that quercetin reduced the expressions of pro-inflammatory genes of macrophages while increased the expressions of anti-inflammatory genes. Furthermore, in vivo implantation was performed in a rat abdominal aorta replacement model. Upon implantation, the grafts exhibited sustained quercetin release and effectively enhanced the regeneration of vascular tissue. The results revealed that quercetin improved endothelial layer formation along the lumen of the vascular grafts at 4 weeks. Furthermore, the thickness of vascular smooth muscle layers significantly increased in PCL/QCT group compared with PCL group. More importantly, the presence of quercetin stimulated the infiltration of a large amount of M2 phenotype macrophages into the grafts. Collectively, the above data reinforced our hypothesis that the incorporation of quercetin may be in favor of modulating the inflammatory microenvironment and improving vascular tissue regeneration and remodeling in vascular grafts.
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Zou D, Qin J, Hu W, Wei Z, Zhan Y, He Y, Zhao C, Li L. Macrophages Rapidly Seal off the Punctured Zebrafish Larval Brain through a Vital Honeycomb Network Structure. Int J Mol Sci 2022; 23:ijms231810551. [PMID: 36142462 PMCID: PMC9503817 DOI: 10.3390/ijms231810551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 08/30/2022] [Accepted: 09/07/2022] [Indexed: 11/26/2022] Open
Abstract
There is accumulating evidence that macrophages play additional important roles in tissue damage besides their typical phagocytosis. Although the aggregation of macrophages on injured sites has long been observed, few researchers have focused on the role of the overall structure of macrophage aggregation. In this study, we developed a standardized traumatic brain injury (TBI) model in zebrafish larvae to mimic edema and brain tissue spillage symptoms after severe brain trauma. Using time-lapse imaging, we showed that macrophages/microglia in zebrafish larvae responded rapidly and dominated the surface of injured tissue, forming a meaningful honeycomb network structure through their compact aggregation and connection. Disrupting this structure led to fatal edema-like symptoms with severe loss of brain tissue. Using the RNA-Seq, together with the manipulation of in vitro cell lines, we found that collagen IV was indispensable to the formation of honeycomb network structures. Our study thus revealed a novel perspective regarding macrophages forming a protective compact structure with collagen IV. This honeycomb network structure acted as a physical barrier to prevent tissue loss and maintain brain homeostasis after TBI. This study may provide new evidence of macrophages’ function for the rapid protection of brain tissue after brain injury.
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Affiliation(s)
- Dandan Zou
- Key Laboratory of Freshwater Fish Reproduction and Development, Ministry of Education, Institute of Developmental Biology and Regenerative Medicine, Southwest University, Beibei, Chongqing 400715, China
| | - Jie Qin
- Key Laboratory of Freshwater Fish Reproduction and Development, Ministry of Education, Institute of Developmental Biology and Regenerative Medicine, Southwest University, Beibei, Chongqing 400715, China
| | - Wenlong Hu
- Key Laboratory of Freshwater Fish Reproduction and Development, Ministry of Education, Institute of Developmental Biology and Regenerative Medicine, Southwest University, Beibei, Chongqing 400715, China
| | - Zongfang Wei
- Key Laboratory of Freshwater Fish Reproduction and Development, Ministry of Education, Institute of Developmental Biology and Regenerative Medicine, Southwest University, Beibei, Chongqing 400715, China
| | - Yandong Zhan
- Key Laboratory of Freshwater Fish Reproduction and Development, Ministry of Education, Institute of Developmental Biology and Regenerative Medicine, Southwest University, Beibei, Chongqing 400715, China
| | - Yuepeng He
- Key Laboratory of Freshwater Fish Reproduction and Development, Ministry of Education, Institute of Developmental Biology and Regenerative Medicine, Southwest University, Beibei, Chongqing 400715, China
| | - Congjian Zhao
- Chongqing Engineering Research Center of Medical Electronics and Information Technology, School of Biomedical Engineering and Informatics, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
| | - Li Li
- Research Center of Stem Cells and Ageing, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China
- Correspondence:
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50
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Iribarne M, Hyde DR. Different inflammation responses modulate Müller glia proliferation in the acute or chronically damaged zebrafish retina. Front Cell Dev Biol 2022; 10:892271. [PMID: 36120571 PMCID: PMC9472244 DOI: 10.3389/fcell.2022.892271] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Accepted: 07/20/2022] [Indexed: 11/13/2022] Open
Abstract
Unlike mammals, zebrafish regenerate in response to retinal damage. Because microglia are activated by retinal damage, we investigated their role during regeneration following either acute or chronic damage. At three weeks post-fertilization (wpf), both wild-type fish exhibiting NMDA-induced acute ganglion and amacrine cell death and gold rush (gosh) mutant fish possessing chronic cone photoreceptor degeneration displayed reactive microglia/macrophages and Müller glia proliferation. Dexamethasone-treated retinas, to inhibit the immune response, lacked reactive microglia/macrophages and possessed fewer PCNA-positive cells, while LPS treatment increased microglia/macrophages and PCNA-labeled cells. NMDA-injured retinas upregulated expression of il-1β and tnfα pro-inflammatory cytokine genes, followed by increased expression of il-10 and arg1 anti-inflammatory/remodeling cytokine genes. A transient early TNFα pro-inflammatory microglia/macrophage population was visualized in NMDA-damaged retinas. In contrast, gosh mutant retinas exhibited a slight increase of pro-inflammatory cytokine gene expression concurrently with a greater increased anti-inflammatory/remodeling cytokine gene expression. Few TNFα pro-inflammatory microglia/macrophages were observed in the gosh retina. Understanding why acute and chronic damage results in different inflammation profiles and their effects on regulating zebrafish retinal regeneration would provide important clues toward improving therapeutic strategies for repairing injured mammalian tissues.
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Affiliation(s)
- Maria Iribarne
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, United States
- Center for Zebrafish Research, University of Notre Dame, Notre Dame, IN, United States
- Center for Stem Cells and Regenerative Medicine, University of Notre Dame, Notre Dame, IN, United States
| | - David R. Hyde
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, United States
- Center for Zebrafish Research, University of Notre Dame, Notre Dame, IN, United States
- Center for Stem Cells and Regenerative Medicine, University of Notre Dame, Notre Dame, IN, United States
- *Correspondence: David R. Hyde,
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