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Chakrabarti S, Klich JD, Khallaf MA, Hulme AJ, Sánchez-Carranza O, Baran ZM, Rossi A, Huang ATL, Pohl T, Fleischer R, Fürst C, Hammes A, Bégay V, Hörnberg H, Finol-Urdaneta RK, Poole K, Dottori M, Lewin GR. Touch sensation requires the mechanically gated ion channel ELKIN1. Science 2024; 383:992-998. [PMID: 38422143 DOI: 10.1126/science.adl0495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Accepted: 01/26/2024] [Indexed: 03/02/2024]
Abstract
Touch perception is enabled by mechanically activated ion channels, the opening of which excites cutaneous sensory endings to initiate sensation. In this study, we identify ELKIN1 as an ion channel likely gated by mechanical force, necessary for normal touch sensitivity in mice. Touch insensitivity in Elkin1-/- mice was caused by a loss of mechanically activated currents (MA currents) in around half of all sensory neurons activated by light touch (low-threshold mechanoreceptors). Reintroduction of Elkin1 into sensory neurons from Elkin1-/- mice restored MA currents. Additionally, small interfering RNA-mediated knockdown of ELKIN1 from induced human sensory neurons substantially reduced indentation-induced MA currents, supporting a conserved role for ELKIN1 in human touch. Our data identify ELKIN1 as a core component of touch transduction in mice and potentially in humans.
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Affiliation(s)
- Sampurna Chakrabarti
- Molecular Physiology of Somatic Sensation Laboratory, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), 13125 Berlin-Buch, Germany
| | - Jasmin D Klich
- Molecular Physiology of Somatic Sensation Laboratory, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), 13125 Berlin-Buch, Germany
| | - Mohammed A Khallaf
- Molecular Physiology of Somatic Sensation Laboratory, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), 13125 Berlin-Buch, Germany
- Department of Zoology and Entomology, Faculty of Science, Assiut University, Assiut 71516, Egypt
| | - Amy J Hulme
- School of Medical, Indigenous and Health Sciences, Molecular Horizons, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Oscar Sánchez-Carranza
- Molecular Physiology of Somatic Sensation Laboratory, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), 13125 Berlin-Buch, Germany
| | - Zuzanna M Baran
- Molecular Physiology of Somatic Sensation Laboratory, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), 13125 Berlin-Buch, Germany
- Molecular and Cellular Basis of Behavior, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), 13125 Berlin-Buch, Germany
| | - Alice Rossi
- Molecular Physiology of Somatic Sensation Laboratory, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), 13125 Berlin-Buch, Germany
| | - Angela Tzu-Lun Huang
- Molecular Physiology of Somatic Sensation Laboratory, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), 13125 Berlin-Buch, Germany
| | - Tobias Pohl
- Molecular and Cellular Basis of Behavior, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), 13125 Berlin-Buch, Germany
| | - Raluca Fleischer
- Molecular Physiology of Somatic Sensation Laboratory, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), 13125 Berlin-Buch, Germany
| | - Carina Fürst
- Molecular Physiology of Somatic Sensation Laboratory, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), 13125 Berlin-Buch, Germany
- Molecular Pathways in Cortical Development, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), 13125 Berlin-Buch, Germany
| | - Annette Hammes
- Molecular Pathways in Cortical Development, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), 13125 Berlin-Buch, Germany
| | - Valérie Bégay
- Molecular Physiology of Somatic Sensation Laboratory, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), 13125 Berlin-Buch, Germany
| | - Hanna Hörnberg
- Molecular and Cellular Basis of Behavior, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), 13125 Berlin-Buch, Germany
- NeuroCure Cluster of Excellence, Humboldt-Universität zu Berlin, 10117 Berlin, Germany
| | - Rocio K Finol-Urdaneta
- School of Medical, Indigenous and Health Sciences, Molecular Horizons, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Kate Poole
- School of Biomedical Sciences, Faculty of Medicine & Health, University of New South Wales, Sydney, NSW 2052, Australia
| | - Mirella Dottori
- School of Medical, Indigenous and Health Sciences, Molecular Horizons, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Gary R Lewin
- Molecular Physiology of Somatic Sensation Laboratory, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), 13125 Berlin-Buch, Germany
- Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany
- German Center for Mental Health (DZPG), partner site Berlin, 10117 Berlin, Germany
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Andreotti G, Baur J, Ugrina M, Pfeiffer PB, Hartmann M, Wiese S, Miyahara H, Higuchi K, Schwierz N, Schmidt M, Fändrich M. Insights into the Structural Basis of Amyloid Resistance Provided by Cryo-EM Structures of AApoAII Amyloid Fibrils. J Mol Biol 2024; 436:168441. [PMID: 38199491 DOI: 10.1016/j.jmb.2024.168441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 12/20/2023] [Accepted: 01/04/2024] [Indexed: 01/12/2024]
Abstract
Amyloid resistance is the inability or the reduced susceptibility of an organism to develop amyloidosis. In this study we have analysed the molecular basis of the resistance to systemic AApoAII amyloidosis, which arises from the formation of amyloid fibrils from apolipoprotein A-II (ApoA-II). The disease affects humans and animals, including SAMR1C mice that express the C allele of ApoA-II protein, whereas other mouse strains are resistant to development of amyloidosis due to the expression of other ApoA-II alleles, such as ApoA-IIF. Using cryo-electron microscopy, molecular dynamics simulations and other methods, we have determined the structures of pathogenic AApoAII amyloid fibrils from SAMR1C mice and analysed the structural effects of ApoA-IIF-specific mutational changes. Our data show that these changes render ApoA-IIF incompatible with the specific fibril morphologies, with which ApoA-II protein can become pathogenic in vivo.
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Affiliation(s)
- Giada Andreotti
- Institute of Protein Biochemistry, Ulm University, 89081 Ulm, Germany.
| | - Julian Baur
- Institute of Protein Biochemistry, Ulm University, 89081 Ulm, Germany
| | - Marijana Ugrina
- Institute of Physics, University of Augsburg, 86159 Augsburg, Germany
| | | | - Max Hartmann
- Institute of Protein Biochemistry, Ulm University, 89081 Ulm, Germany
| | - Sebastian Wiese
- Core Unit Mass Spectrometry and Proteomics, Ulm University, 89081 Ulm, Germany
| | - Hiroki Miyahara
- Institute for Biomedical Science, Shinshu University, Matsumoto 390-8621, Japan
| | - Keiichi Higuchi
- Institute for Biomedical Science, Shinshu University, Matsumoto 390-8621, Japan; Faculty of Human Health Sciences, Meio University, Nago 905-8585, Japan
| | - Nadine Schwierz
- Institute of Physics, University of Augsburg, 86159 Augsburg, Germany
| | - Matthias Schmidt
- Institute of Protein Biochemistry, Ulm University, 89081 Ulm, Germany
| | - Marcus Fändrich
- Institute of Protein Biochemistry, Ulm University, 89081 Ulm, Germany
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Socodato R, Almeida TO, Portugal CC, Santos ECS, Tedim-Moreira J, Galvão-Ferreira J, Canedo T, Baptista FI, Magalhães A, Ambrósio AF, Brakebusch C, Rubinstein B, Moreira IS, Summavielle T, Pinto IM, Relvas JB. Microglial Rac1 is essential for experience-dependent brain plasticity and cognitive performance. Cell Rep 2023; 42:113447. [PMID: 37980559 DOI: 10.1016/j.celrep.2023.113447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 08/14/2023] [Accepted: 10/31/2023] [Indexed: 11/21/2023] Open
Abstract
Microglia, the largest population of brain immune cells, continuously interact with synapses to maintain brain homeostasis. In this study, we use conditional cell-specific gene targeting in mice with multi-omics approaches and demonstrate that the RhoGTPase Rac1 is an essential requirement for microglia to sense and interpret the brain microenvironment. This is crucial for microglia-synapse crosstalk that drives experience-dependent plasticity, a fundamental brain property impaired in several neuropsychiatric disorders. Phosphoproteomics profiling detects a large modulation of RhoGTPase signaling, predominantly of Rac1, in microglia of mice exposed to an environmental enrichment protocol known to induce experience-dependent brain plasticity and cognitive performance. Ablation of microglial Rac1 affects pathways involved in microglia-synapse communication, disrupts experience-dependent synaptic remodeling, and blocks the gains in learning, memory, and sociability induced by environmental enrichment. Our results reveal microglial Rac1 as a central regulator of pathways involved in the microglia-synapse crosstalk required for experience-dependent synaptic plasticity and cognitive performance.
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Affiliation(s)
- Renato Socodato
- Institute of Research and Innovation in Health (i3S) and Institute for Molecular and Cell Biology (IBMC), University of Porto, Porto, Portugal.
| | - Tiago O Almeida
- Institute of Research and Innovation in Health (i3S) and Institute for Molecular and Cell Biology (IBMC), University of Porto, Porto, Portugal; ICBAS - School of Medicine and Biomedical Sciences, Porto, Portugal
| | - Camila C Portugal
- Institute of Research and Innovation in Health (i3S) and Institute for Molecular and Cell Biology (IBMC), University of Porto, Porto, Portugal
| | - Evelyn C S Santos
- Institute of Research and Innovation in Health (i3S) and Institute for Molecular and Cell Biology (IBMC), University of Porto, Porto, Portugal; Department of Biomedicine, Faculty of Medicine of the University of Porto (FMUP), Porto, Portugal
| | - Joana Tedim-Moreira
- Institute of Research and Innovation in Health (i3S) and Institute for Molecular and Cell Biology (IBMC), University of Porto, Porto, Portugal; Department of Biomedicine, Faculty of Medicine of the University of Porto (FMUP), Porto, Portugal
| | - João Galvão-Ferreira
- Institute of Research and Innovation in Health (i3S) and Institute for Molecular and Cell Biology (IBMC), University of Porto, Porto, Portugal; Department of Biomedicine, Faculty of Medicine of the University of Porto (FMUP), Porto, Portugal
| | - Teresa Canedo
- Institute of Research and Innovation in Health (i3S) and Institute for Molecular and Cell Biology (IBMC), University of Porto, Porto, Portugal
| | - Filipa I Baptista
- Center for Innovative Biomedicine and Biotechnology (CIBB), Coimbra Institute for Clinical and Biomedical Research (iCBR), and Clinical Academic Center of Coimbra (CACC), University of Coimbra, Coimbra, Portugal
| | - Ana Magalhães
- Institute of Research and Innovation in Health (i3S) and Institute for Molecular and Cell Biology (IBMC), University of Porto, Porto, Portugal
| | - António F Ambrósio
- Center for Innovative Biomedicine and Biotechnology (CIBB), Coimbra Institute for Clinical and Biomedical Research (iCBR), and Clinical Academic Center of Coimbra (CACC), University of Coimbra, Coimbra, Portugal
| | - Cord Brakebusch
- Molecular Pathology Section, BRIC, Københavns Biocenter, Copenhagen, Denmark
| | | | - Irina S Moreira
- Department of Life Sciences, Center for Innovative Biomedicine and Biotechnology (CIBB) and CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
| | - Teresa Summavielle
- Institute of Research and Innovation in Health (i3S) and Institute for Molecular and Cell Biology (IBMC), University of Porto, Porto, Portugal; ESS.PP, Escola Superior de Saúde do Politécnico do Porto, Porto, Portugal
| | - Inês Mendes Pinto
- Institute of Research and Innovation in Health (i3S) and Institute for Molecular and Cell Biology (IBMC), University of Porto, Porto, Portugal; Department of Biomedicine, Faculty of Medicine of the University of Porto (FMUP), Porto, Portugal
| | - João B Relvas
- Institute of Research and Innovation in Health (i3S) and Institute for Molecular and Cell Biology (IBMC), University of Porto, Porto, Portugal; Department of Biomedicine, Faculty of Medicine of the University of Porto (FMUP), Porto, Portugal.
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Minei R, Aoki H, Ogura A, Kunisada T. Compensatory gene expression potentially rescues impaired brain development in Kit mutant mice. Sci Rep 2023; 13:4166. [PMID: 36914660 PMCID: PMC10011532 DOI: 10.1038/s41598-023-30032-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Accepted: 02/14/2023] [Indexed: 03/14/2023] Open
Abstract
While loss-of-function mutations in the murine dominant white spotting/Kit (W) locus affect a diverse array of cell lineages and organs, the brain, organ with the highest expression show the least number of defective phenotypes. We performed transcriptome analysis of the brains of KitW embryos and found prominent gene expression changes specifically in the E12.5 KitW/W homozygous mutant. Although other potentially effective changes in gene expression were observed, uniform downregulation of ribosomal protein genes and oxidative phosphorylation pathway genes specifically observed in the E12.5 brain may comprise a genetic compensation system exerting protective metabolic effects against the deleterious effect of KitW/W mutation in the developing brain.
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Affiliation(s)
- Ryuhei Minei
- Department of Bio-Science, Nagahama Institute of Bio-Science and Technology, Shiga, Japan
| | - Hitomi Aoki
- Department of Tissue and Organ Development, Regeneration, and Advanced Medical Science, Graduate School of Medicine, Gifu University, 1-1 Yanagido, Gifu, 501-1194, Japan
| | - Atsushi Ogura
- Department of Bio-Science, Nagahama Institute of Bio-Science and Technology, Shiga, Japan
| | - Takahiro Kunisada
- Department of Tissue and Organ Development, Regeneration, and Advanced Medical Science, Graduate School of Medicine, Gifu University, 1-1 Yanagido, Gifu, 501-1194, Japan.
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Ferdaos N, Lowell S, Mason JO. Pax6 mutant cerebral organoids partially recapitulate phenotypes of Pax6 mutant mouse strains. PLoS One 2022; 17:e0278147. [PMID: 36441708 PMCID: PMC9704552 DOI: 10.1371/journal.pone.0278147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Accepted: 11/10/2022] [Indexed: 11/30/2022] Open
Abstract
Cerebral organoids show great promise as tools to unravel the complex mechanisms by which the mammalian brain develops during embryogenesis. We generated mouse cerebral organoids harbouring constitutive or conditional mutations in Pax6, which encodes a transcription factor with multiple important roles in brain development. By comparing the phenotypes of mutant organoids with the well-described phenotypes of Pax6 mutant mouse embryos, we evaluated the extent to which cerebral organoids reproduce phenotypes previously described in vivo. Organoids lacking Pax6 showed multiple phenotypes associated with its activity in mice, including precocious neural differentiation, altered cell cycle and an increase in abventricular mitoses. Neural progenitors in both Pax6 mutant and wild type control organoids cycled more slowly than their in vivo counterparts, but nonetheless we were able to identify clear changes to cell cycle attributable to the absence of Pax6. Our findings support the value of cerebral organoids as tools to explore mechanisms of brain development, complementing the use of mouse models.
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Affiliation(s)
- Nurfarhana Ferdaos
- Centre for Discovery Brain Sciences, University of Edinburgh, Edinburgh, United Kingdom
- Department of Pharmacology and Chemistry, Faculty of Pharmacy, UiTM Selangor, Shah Alam, Malaysia
| | - Sally Lowell
- Centre for Regenerative Medicine, University of Edinburgh, Edinburgh, United Kingdom
| | - John O. Mason
- Centre for Discovery Brain Sciences, University of Edinburgh, Edinburgh, United Kingdom
- Simons Initiative for the Developing Brain, University of Edinburgh, Edinburgh, United Kingdom
- * E-mail:
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6
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Itami C, Uesaka N, Huang JY, Lu HC, Sakimura K, Kano M, Kimura F. Endocannabinoid-dependent formation of columnar axonal projection in the mouse cerebral cortex. Proc Natl Acad Sci U S A 2022; 119:e2122700119. [PMID: 36067295 PMCID: PMC9477236 DOI: 10.1073/pnas.2122700119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Accepted: 07/19/2022] [Indexed: 11/18/2022] Open
Abstract
Columnar structure is one of the most fundamental morphological features of the cerebral cortex and is thought to be the basis of information processing in higher animals. Yet, how such a topographically precise structure is formed is largely unknown. Formation of columnar projection of layer 4 (L4) axons is preceded by thalamocortical formation, in which type 1 cannabinoid receptors (CB1R) play an important role in shaping barrel-specific targeted projection by operating spike timing-dependent plasticity during development (Itami et al., J. Neurosci. 36, 7039-7054 [2016]; Kimura & Itami, J. Neurosci. 39, 3784-3791 [2019]). Right after the formation of thalamocortical projections, CB1Rs start to function at L4 axon terminals (Itami & Kimura, J. Neurosci. 32, 15000-15011 [2012]), which coincides with the timing of columnar shaping of L4 axons. Here, we show that the endocannabinoid 2-arachidonoylglycerol (2-AG) plays a crucial role in columnar shaping. We found that L4 axon projections were less organized until P12 and then became columnar after CB1Rs became functional. By contrast, the columnar organization of L4 axons was collapsed in mice genetically lacking diacylglycerol lipase α, the major enzyme for 2-AG synthesis. Intraperitoneally administered CB1R agonists shortened axon length, whereas knockout of CB1R in L4 neurons impaired columnar projection of their axons. Our results suggest that endocannabinoid signaling is crucial for shaping columnar axonal projection in the cerebral cortex.
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Affiliation(s)
- Chiaki Itami
- Department of Physiology, Faculty of Medicine, Saitama Medical University, Moroyama, Saitama 350-0495, Japan
- The Linda and Jack Gill Center for Biomolecular Sciences, Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN 47405
| | - Naofumi Uesaka
- Department of Neurophysiology, Graduate School of Medicine, The University of Tokyo, Tokyo, 113-0033, Japan
- Present address, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo 113-8510, Japan
| | - Jui-Yen Huang
- The Linda and Jack Gill Center for Biomolecular Sciences, Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN 47405
| | - Hui-Chen Lu
- The Linda and Jack Gill Center for Biomolecular Sciences, Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN 47405
| | - Kenji Sakimura
- Department of Cellular Neurobiology, Brain Research Institute, Niigata University, Niigata, 951-8585, Japan
| | - Masanobu Kano
- Department of Neurophysiology, Graduate School of Medicine, The University of Tokyo, Tokyo, 113-0033, Japan
- International Research Center for Neurointelligence (WPI-IRCN), The University of Tokyo, Tokyo, 113-0033, Japan
| | - Fumitaka Kimura
- Department of Molecular Neuroscience, Osaka University Graduate School of Medicine, Suita 565-0871, Japan
- Laboratory of Brain Neuroscience, Faculty of Medical Sciences, Jikei University of Health Care and Sciences, Osaka, 532-0003, Japan
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Lee KJ, Rambault L, Bou-Gharios G, Clegg PD, Akhtar R, Czanner G, van ‘t Hof R, Canty-Laird EG. Collagen (I) homotrimer potentiates the osteogenesis imperfecta (oim) mutant allele and reduces survival in male mice. Dis Model Mech 2022; 15:dmm049428. [PMID: 36106514 PMCID: PMC9555767 DOI: 10.1242/dmm.049428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 08/23/2022] [Indexed: 11/20/2022] Open
Abstract
The osteogenesis imperfecta murine (oim) model with solely homotrimeric (α1)3 type I collagen, owing to a dysfunctional α2(I) collagen chain, has a brittle bone phenotype, implying that the (α1)2(α2)1 heterotrimer is required for physiological bone function. Here, we comprehensively show, for the first time, that mice lacking the α2(I) chain do not have impaired bone biomechanical or structural properties, unlike oim homozygous mice. However, Mendelian inheritance was affected in male mice of both lines, and male mice null for the α2(I) chain exhibited age-related loss of condition. Compound heterozygotes were generated to test whether gene dosage was responsible for the less-severe phenotype of oim heterozygotes, after allelic discrimination showed that the oim mutant allele was not downregulated in heterozygotes. Compound heterozygotes had impaired bone structural properties compared to those of oim heterozygotes, albeit to a lesser extent than those of oim homozygotes. Hence, the presence of heterotrimeric type I collagen in oim heterozygotes alleviates the effect of the oim mutant allele, but a genetic interaction between homotrimeric type I collagen and the oim mutant allele leads to bone fragility.
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Affiliation(s)
- Katie J. Lee
- Department of Musculoskeletal and Ageing Science, Institute of Life Course and Medical Sciences, University of Liverpool, William Henry Duncan Building, 6 West Derby Street, Liverpool L7 8TX, UK
| | - Lisa Rambault
- Département d'Informatique, Université de Poitiers, 86073 Poitiers Cedex 9, France
| | - George Bou-Gharios
- Department of Musculoskeletal and Ageing Science, Institute of Life Course and Medical Sciences, University of Liverpool, William Henry Duncan Building, 6 West Derby Street, Liverpool L7 8TX, UK
| | - Peter D. Clegg
- Department of Musculoskeletal and Ageing Science, Institute of Life Course and Medical Sciences, University of Liverpool, William Henry Duncan Building, 6 West Derby Street, Liverpool L7 8TX, UK
- The Medical Research Council Versus Arthritis Centre for Integrated Research into Musculoskeletal Ageing (CIMA), Institute of Life Course and Medical Sciences, University of Liverpool, William Henry Duncan Building, 6 West Derby Street, Liverpool L7 8TX, UK
| | - Riaz Akhtar
- Department of Mechanical, Materials and Aerospace Engineering, School of Engineering, University of Liverpool, Liverpool L69 3GH, UK
| | - Gabriela Czanner
- School of Computer Science and Mathematics, Faculty of Engineering and Technology, Liverpool John Moores University, Byrom Street, Liverpool L3 3AF, UK
| | - Rob van ‘t Hof
- Department of Musculoskeletal and Ageing Science, Institute of Life Course and Medical Sciences, University of Liverpool, William Henry Duncan Building, 6 West Derby Street, Liverpool L7 8TX, UK
| | - Elizabeth G. Canty-Laird
- Department of Musculoskeletal and Ageing Science, Institute of Life Course and Medical Sciences, University of Liverpool, William Henry Duncan Building, 6 West Derby Street, Liverpool L7 8TX, UK
- The Medical Research Council Versus Arthritis Centre for Integrated Research into Musculoskeletal Ageing (CIMA), Institute of Life Course and Medical Sciences, University of Liverpool, William Henry Duncan Building, 6 West Derby Street, Liverpool L7 8TX, UK
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8
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Li X, McPherson M, Hager M, Fang Y, Bartke A, Miller RA. Transient early life growth hormone exposure permanently alters brain, muscle, liver, macrophage, and adipocyte status in long-lived Ames dwarf mice. FASEB J 2022; 36:e22394. [PMID: 35704312 PMCID: PMC9250136 DOI: 10.1096/fj.202200143r] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 05/18/2022] [Accepted: 05/23/2022] [Indexed: 01/24/2023]
Abstract
The exceptional longevity of Ames dwarf (DF) mice can be abrogated by a brief course of growth hormone (GH) injections started at 2 weeks of age. This transient GH exposure also prevents the increase in cellular stress resistance and decline in hypothalamic inflammation characteristic of DF mice. Here, we show that transient early-life GH treatment leads to permanent alteration of pertinent changes in adipocytes, fat-associated macrophages, liver, muscle, and brain that are seen in DF mice. Ames DF mice, like Snell dwarf and GHRKO mice, show elevation of glycosylphosphatidylinositol specific phospholipase D1 in liver, neurogenesis in brain as indicated by BDNF and DCX proteins, muscle production of fibronectin type III domain-containing protein 5 (a precursor of irisin), uncoupling protein 1 as an index of thermogenic capacity in brown and white fat, and increase in fat-associated anti-inflammatory macrophages. In each case, transient exposure to GH early in life reverts the DF mice to the levels of each protein seen in littermate control animals, in animals evaluated at 15-18 months of age. Thus, many of the traits seen in long-lived mutant mice, pertinent to age-related changes in inflammation, neurogenesis, and metabolic control, are permanently set by early-life GH levels.
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Affiliation(s)
- Xinna Li
- Department of PathologyUniversity of Michigan School of MedicineAnn ArborMichiganUSA
| | - Madaline McPherson
- College of Literature, Sciences, & the ArtsUniversity of MichiganAnn ArborMichiganUSA
| | - Mary Hager
- College of Literature, Sciences, & the ArtsUniversity of MichiganAnn ArborMichiganUSA
| | - Yimin Fang
- Department of Internal MedicineSouthern Illinois University School of MedicineSpringfieldIllinoisUSA
| | - Andrzej Bartke
- Department of Internal MedicineSouthern Illinois University School of MedicineSpringfieldIllinoisUSA
| | - Richard A. Miller
- Department of PathologyUniversity of Michigan School of MedicineAnn ArborMichiganUSA
- University of Michigan Geriatrics CenterAnn ArborMichiganUSA
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Reboll MR, Klede S, Taft MH, Cai CL, Field LJ, Lavine KJ, Koenig AL, Fleischauer J, Meyer J, Schambach A, Niessen HW, Kosanke M, van den Heuvel J, Pich A, Bauersachs J, Wu X, Zheng L, Wang Y, Korf-Klingebiel M, Polten F, Wollert KC. Meteorin-like promotes heart repair through endothelial KIT receptor tyrosine kinase. Science 2022; 376:1343-1347. [PMID: 35709278 PMCID: PMC9838878 DOI: 10.1126/science.abn3027] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Effective tissue repair after myocardial infarction entails a vigorous angiogenic response, guided by incompletely defined immune cell-endothelial cell interactions. We identify the monocyte- and macrophage-derived cytokine METRNL (meteorin-like) as a driver of postinfarction angiogenesis and high-affinity ligand for the stem cell factor receptor KIT (KIT receptor tyrosine kinase). METRNL mediated angiogenic effects in cultured human endothelial cells through KIT-dependent signaling pathways. In a mouse model of myocardial infarction, METRNL promoted infarct repair by selectively expanding the KIT-expressing endothelial cell population in the infarct border zone. Metrnl-deficient mice failed to mount this KIT-dependent angiogenic response and developed severe postinfarction heart failure. Our data establish METRNL as a KIT receptor ligand in the context of ischemic tissue repair.
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Affiliation(s)
- Marc R. Reboll
- Division of Molecular and Translational Cardiology, Hans Borst Center for Heart and Stem Cell Research, Hannover Medical School; 30625 Hannover, Germany
- Department of Cardiology and Angiology, Hannover Medical School; 30625 Hannover, Germany
| | - Stefanie Klede
- Division of Molecular and Translational Cardiology, Hans Borst Center for Heart and Stem Cell Research, Hannover Medical School; 30625 Hannover, Germany
- Department of Cardiology and Angiology, Hannover Medical School; 30625 Hannover, Germany
| | - Manuel H. Taft
- Institute for Biophysical Chemistry, Hannover Medical School; 30625 Hannover, Germany
| | - Chen-Leng Cai
- Department of Pediatrics, Herman B Wells Center for Pediatric Research, Indiana University School of Medicine; Indianapolis, IN 46202, USA
| | - Loren J. Field
- Krannert Cardiovascular Research Center and the Herman B Wells Center for Pediatric Research, Indiana University School of Medicine; Indianapolis, IN 46202, USA
| | - Kory J. Lavine
- Center for Cardiovascular Research, Department of Medicine, Washington University School of Medicine; St. Louis, MO 63110, USA
| | - Andrew L. Koenig
- Center for Cardiovascular Research, Department of Medicine, Washington University School of Medicine; St. Louis, MO 63110, USA
| | - Jenni Fleischauer
- Institute of Experimental Hematology, Hannover Medical School; 30625 Hannover, Germany
| | - Johann Meyer
- Institute of Experimental Hematology, Hannover Medical School; 30625 Hannover, Germany
| | - Axel Schambach
- Institute of Experimental Hematology, Hannover Medical School; 30625 Hannover, Germany
| | - Hans W. Niessen
- Department of Pathology and Department of Cardiac Surgery, Institute for Cardiovascular Research, University Medical Center; 1007 MB Amsterdam, The Netherlands
| | - Maike Kosanke
- Research Core Unit Genomics, Hannover Medical School; 30625 Hannover, Germany
| | - Joop van den Heuvel
- Technology Platform Recombinant Protein Expression, Helmholtz Center for Infection Research; 38124 Braunschweig, Germany
| | - Andreas Pich
- Core Unit Proteomics and Institute of Toxicology, Hannover Medical School; 30625 Hannover, Germany
| | - Johann Bauersachs
- Department of Cardiology and Angiology, Hannover Medical School; 30625 Hannover, Germany
| | - Xuekun Wu
- Division of Molecular and Translational Cardiology, Hans Borst Center for Heart and Stem Cell Research, Hannover Medical School; 30625 Hannover, Germany
- Department of Cardiology and Angiology, Hannover Medical School; 30625 Hannover, Germany
| | - Linqun Zheng
- Division of Molecular and Translational Cardiology, Hans Borst Center for Heart and Stem Cell Research, Hannover Medical School; 30625 Hannover, Germany
- Department of Cardiology and Angiology, Hannover Medical School; 30625 Hannover, Germany
| | - Yong Wang
- Division of Molecular and Translational Cardiology, Hans Borst Center for Heart and Stem Cell Research, Hannover Medical School; 30625 Hannover, Germany
- Department of Cardiology and Angiology, Hannover Medical School; 30625 Hannover, Germany
| | - Mortimer Korf-Klingebiel
- Division of Molecular and Translational Cardiology, Hans Borst Center for Heart and Stem Cell Research, Hannover Medical School; 30625 Hannover, Germany
- Department of Cardiology and Angiology, Hannover Medical School; 30625 Hannover, Germany
| | - Felix Polten
- Division of Molecular and Translational Cardiology, Hans Borst Center for Heart and Stem Cell Research, Hannover Medical School; 30625 Hannover, Germany
- Department of Cardiology and Angiology, Hannover Medical School; 30625 Hannover, Germany
| | - Kai C. Wollert
- Division of Molecular and Translational Cardiology, Hans Borst Center for Heart and Stem Cell Research, Hannover Medical School; 30625 Hannover, Germany
- Department of Cardiology and Angiology, Hannover Medical School; 30625 Hannover, Germany
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10
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Kim GS, Wang T, Sayyid ZN, Fuhriman J, Jones SM, Cheng AG. Repair of surviving hair cells in the damaged mouse utricle. Proc Natl Acad Sci U S A 2022; 119:e2116973119. [PMID: 35380897 PMCID: PMC9169652 DOI: 10.1073/pnas.2116973119] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Accepted: 02/21/2022] [Indexed: 11/18/2022] Open
Abstract
Sensory hair cells (HCs) in the utricle are mechanoreceptors required to detect linear acceleration. After damage, the mammalian utricle partially restores the HC population and organ function, although regenerated HCs are primarily type II and immature. Whether native, surviving HCs can repair and contribute to this recovery is unclear. Here, we generated the Pou4f3DTR/+; Atoh1CreERTM/+; Rosa26RtdTomato/+ mouse to fate map HCs prior to ablation. After HC ablation, vestibular evoked potentials were abolished in all animals, with ∼57% later recovering responses. Relative to nonrecovery mice, recovery animals harbored more Atoh1-tdTomato+ surviving HCs. In both groups, surviving HCs displayed markers of both type I and type II subtypes and afferent synapses, despite distorted lamination and morphology. Surviving type II HCs remained innervated in both groups, whereas surviving type I HCs first lacked and later regained calyces in the recovery, but not the nonrecovery, group. Finally, surviving HCs initially displayed immature and subsequently mature-appearing bundles in the recovery group. These results demonstrate that surviving HCs are capable of self-repair and may contribute to the recovery of vestibular function.
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Affiliation(s)
- Grace S. Kim
- Department of Otolaryngology–Head and Neck Surgery, Stanford University School of Medicine, Stanford, CA 94305
| | - Tian Wang
- Department of Otolaryngology–Head and Neck Surgery, Stanford University School of Medicine, Stanford, CA 94305
| | - Zahra N. Sayyid
- Department of Otolaryngology–Head and Neck Surgery, Stanford University School of Medicine, Stanford, CA 94305
| | - Jessica Fuhriman
- Department of Otolaryngology–Head and Neck Surgery, Stanford University School of Medicine, Stanford, CA 94305
| | - Sherri M. Jones
- Department of Special Education and Communication Disorders, College of Education and Human Sciences, University of Nebraska, Lincoln, NE 68583
| | - Alan G. Cheng
- Department of Otolaryngology–Head and Neck Surgery, Stanford University School of Medicine, Stanford, CA 94305
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11
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Hopp K, Kleczko EK, Gitomer BY, Chonchol M, Klawitter J, Christians U, Klawitter J. Metabolic reprogramming in a slowly developing orthologous model of polycystic kidney disease. Am J Physiol Renal Physiol 2022; 322:F258-F267. [PMID: 35037466 PMCID: PMC8858679 DOI: 10.1152/ajprenal.00262.2021] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 01/05/2022] [Accepted: 01/06/2022] [Indexed: 11/22/2022] Open
Abstract
Autosomal dominant polycystic kidney disease (ADPKD) is the most common inherited kidney disease and affects 1 in 1,000 individuals. There is accumulating evidence suggesting that there are shared cellular mechanisms responsible for cystogenesis in human and murine PKD and that reprogramming of metabolism is a key disease feature. In this study, we used a targeted metabolomics approach in an orthologous mouse model of PKD (Pkd1RC/RC) to investigate the metabolic modifications a cystic kidney undergoes during disease progression. Using the Kyoto Encyclopedia of Genes and Genomes pathway database, we identified several biologically relevant metabolic pathways that were altered early in this disease (in 3-mo-old Pkd1RC/RC mice), the most highly represented being arginine biosynthesis and metabolism and tryptophan and phenylalanine metabolism. During the next 6 mo of disease progression, multiple uremic solutes accumulated in the kidney of cystic mice, including several established markers of oxidative stress and endothelial dysfunction (allantoin, asymmetric dimethylarginine, homocysteine, malondialdehyde, methionine sulfoxide, and S-adenosylhomocysteine). Levels of kynurenines and polyamines were also augmented in kidneys of Pkd1RC/RC versus wild-type mice, as were the levels of bacteria-produced indoles, whose increase within PKD kidneys suggests microbial dysbiosis. In summary, we confirmed previously published and identified novel metabolic markers and pathways of PKD progression that may prove helpful for diagnosis and monitoring of cystic kidney disease in patients. Furthermore, they provide targets for novel therapeutic approaches that deserve further study and hint toward currently understudied pathomechanisms.NEW & NOTEWORTHY This report delineates the evolution of metabolic changes occurring during autosomal dominant polycystic kidney disease (ADPKD) progression. Using an orthologous model, we performed kidney metabolomics and confirmed dysregulation of metabolic pathways previously found altered in nonorthologous or rapidly-progressive PKD models. Importantly, we identified novel alterations, including augmentation of kynurenines, polyamines, and indoles, suggesting increased inflammation and microbial dysbiosis that provide insights into PKD pathomechanisms and may prove helpful for diagnosing, monitoring, and treating ADPKD.
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Affiliation(s)
- Katharina Hopp
- Division of Renal Diseases and Hypertension, Department of Medicine, University of Colorado, Anschutz Medical Campus, Aurora, Colorado
- Consortium for Fibrosis Research and Translation, University of Colorado, Anschutz Medical Campus, Aurora, Colorado
| | - Emily K Kleczko
- Division of Renal Diseases and Hypertension, Department of Medicine, University of Colorado, Anschutz Medical Campus, Aurora, Colorado
| | - Berenice Y Gitomer
- Division of Renal Diseases and Hypertension, Department of Medicine, University of Colorado, Anschutz Medical Campus, Aurora, Colorado
| | - Michel Chonchol
- Division of Renal Diseases and Hypertension, Department of Medicine, University of Colorado, Anschutz Medical Campus, Aurora, Colorado
- Consortium for Fibrosis Research and Translation, University of Colorado, Anschutz Medical Campus, Aurora, Colorado
| | - Jost Klawitter
- Department of Anesthesiology, University of Colorado, Anschutz Medical Campus, Aurora, Colorado
| | - Uwe Christians
- Department of Anesthesiology, University of Colorado, Anschutz Medical Campus, Aurora, Colorado
| | - Jelena Klawitter
- Division of Renal Diseases and Hypertension, Department of Medicine, University of Colorado, Anschutz Medical Campus, Aurora, Colorado
- Department of Anesthesiology, University of Colorado, Anschutz Medical Campus, Aurora, Colorado
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12
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Hönes GS, Kerp H, Hoppe C, Kowalczyk M, Zwanziger D, Baba HA, Führer D, Moeller LC. Canonical Thyroid Hormone Receptor β Action Stimulates Hepatocyte Proliferation in Male Mice. Endocrinology 2022; 163:6509895. [PMID: 35038735 DOI: 10.1210/endocr/bqac003] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Indexed: 11/19/2022]
Abstract
CONTEXT 3,5,3'-L-triiodothyronine (T3) is a potent inducer of hepatocyte proliferation via the Wnt/β-catenin signaling pathway. Previous studies suggested the involvement of rapid noncanonical thyroid hormone receptor (TR) β signaling, directly activating hepatic Wnt/β-catenin signaling independent from TRβ DNA binding. However, the mechanism by which T3 increases Wnt/β-catenin signaling in hepatocytes has not yet been determined. OBJECTIVE We aimed to determine whether DNA binding of TRβ is required for stimulation of hepatocyte proliferation by T3. METHODS Wild-type (WT) mice, TRβ knockout mice (TRβ KO), and TRβ mutant mice with either specifically abrogated DNA binding (TRβ GS) or abrogated direct phosphatidylinositol 3 kinase activation (TRβ 147F) were treated with T3 for 6 hours or 7 days. Hepatocyte proliferation was assessed by Kiel-67 (Ki67) staining and apoptosis by terminal deoxynucleotidyl transferase dUTP nick-end labeling assay. Activation of β-catenin signaling was measured in primary murine hepatocytes. Gene expression was analyzed by microarray, gene set enrichment analysis (GSEA), and quantitative reverse transcription polymerase chain reaction. RESULTS T3 induced hepatocyte proliferation with an increased number of Ki67-positive cells in WT and TRβ 147F mice (9.2% ± 6.5% and 10.1% ± 2.9%, respectively) compared to TRβ KO and TRβ GS mice (1.2% ± 1.1% and 1.5% ± 0.9%, respectively). Microarray analysis and GSEA showed that genes of the Wnt/β-catenin pathway-among them, Fzd8 (frizzled receptor 8) and Ctnnb1 (β-catenin)-were positively enriched only in T3-treated WT and TRβ 147F mice while B-cell translocation gene anti-proliferation factor 2 was repressed. Consequently, expression of Ccnd1 (CyclinD1) was induced. CONCLUSIONS Instead of directly activating Wnt signaling, T3 and TRβ induce key genes of the Wnt/β-catenin pathway, ultimately stimulating hepatocyte proliferation via CyclinD1. Thus, canonical transcriptional TRβ action is necessary for T3-mediated stimulation of hepatocyte proliferation.
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Affiliation(s)
- Georg Sebastian Hönes
- Department of Endocrinology, Diabetes and Metabolism and Division of Laboratory Research, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Helena Kerp
- Department of Endocrinology, Diabetes and Metabolism and Division of Laboratory Research, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Christoph Hoppe
- Department of Endocrinology, Diabetes and Metabolism and Division of Laboratory Research, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Manuela Kowalczyk
- Department of Endocrinology, Diabetes and Metabolism and Division of Laboratory Research, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Denise Zwanziger
- Department of Endocrinology, Diabetes and Metabolism and Division of Laboratory Research, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | | | - Dagmar Führer
- Department of Endocrinology, Diabetes and Metabolism and Division of Laboratory Research, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Lars Christian Moeller
- Department of Endocrinology, Diabetes and Metabolism and Division of Laboratory Research, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
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13
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Rader EP, Naimo MA, Ensey J, Baker BA. Improved impedance to maladaptation and enhanced VCAM-1 upregulation with resistance-type training in the long-lived Snell dwarf ( Pit1dw/dw) mouse. Aging (Albany NY) 2022; 14:1157-1185. [PMID: 35113807 PMCID: PMC8876912 DOI: 10.18632/aging.203875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Accepted: 01/27/2022] [Indexed: 06/14/2023]
Abstract
Snell dwarf mice with the Pit1dw/dw mutation are deficient in growth hormone, prolactin, and thyroid stimulating hormone and exhibit >40% lifespan extension. This longevity is accompanied by compromised muscular performance. However, research regarding young (3-month-old) Snell dwarf mice demonstrate exceptional responsivity to resistance-type training especially in terms of a shifted fiber type distribution and increased protein levels of vascular cell adhesion molecule-1 (VCAM-1), a possible mediator of such remodeling. In the present study, we investigated whether this responsiveness persists at 12 months of age. Unlike 12-month-old control mice, age-matched Snell dwarf mice remained resistant to training-induced maladaptive decreases in performance and muscle mass. This was accompanied by retainment of the remodeling capacity in muscles of Snell dwarf mice to increase VCAM-1 protein levels and a shift in myosin heavy chain (MHC) isoform distribution with training. Even decreasing training frequency for control mice, an alteration which protected muscles from maladaptation at 12 months of age, did not result in the overt remodeling observed for Snell dwarf mice. The results demonstrate a distinct remodeling response to resistance-type exercise operative in the context of the Pit1dw/dw mutation of long-lived Snell dwarf mice.
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Affiliation(s)
- Erik P. Rader
- Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, Morgantown, WV 26505, USA
| | - Marshall A. Naimo
- Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, Morgantown, WV 26505, USA
- West Virginia School of Medicine, Division of Exercise Physiology, Morgantown, WV 26506, USA
| | - James Ensey
- Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, Morgantown, WV 26505, USA
| | - Brent A. Baker
- Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, Morgantown, WV 26505, USA
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14
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Wu HT, Lin YT, Chew SH, Wu KJ. Organ defects of the Usp7 mutant mouse strain indicate the essential role of K63-polyubiquitinated Usp7 in organ formation. Biomed J 2022; 46:122-133. [PMID: 35183794 PMCID: PMC10104958 DOI: 10.1016/j.bj.2022.02.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 01/12/2022] [Accepted: 02/09/2022] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND K63-linked polyubiquitination of proteins have nonproteolytic functions and regulate the activity of many signal transduction pathways. USP7, a HIF1α deubiquitinase, undergoes K63-linked polyubiquitination under hypoxia. K63-polyubiquitinated USP7 serves as a scaffold to anchor HIF1α, CREBBP, the mediator complex, and the super elongation complex to enhance HIF1α-induced gene transcription. However, the physiological role of K63-polyubiquitinated USP7 remains unknown. METHODS Using a Usp7K444R point mutation knock-in mouse strain, we performed immunohistochemistry and standard molecular biological methods to examine the organ defects of liver and kidney in this knock-in mouse strain. Mechanistic studies were performed by using deubiquitination, immunoprecipitation, and quantitative immunoprecipitations (qChIP) assays. RESULTS We observed multiple organ defects, including decreased liver and muscle weight, decreased tibia/fibula length, liver glycogen storage defect, and polycystic kidneys. The underlying mechanisms include the regulation of protein stability and/or modulation of transcriptional activation of several key factors, leading to decreased protein levels of Prr5l, Hnf4α, Cebpα, and Hnf1β. Repression of these crucial factors leads to the organ defects described above. CONCLUSIONS K63-polyubiquitinated Usp7 plays an essential role in the development of multiple organs and illustrates the importance of the process of K63-linked polyubiquitination in regulating critical protein functions.
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Affiliation(s)
- Han-Tsang Wu
- Department of Cell and Tissue Engineering, Changhua Christian Hospital, Changhua, Taiwan
| | - Yueh-Te Lin
- Cancer Genome Research Center, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan
| | - Shan Hwu Chew
- Cancer Research Malaysia, Outpatient Centre, Sime Darby Medical Centre, Subang Jaya, Selangor, Malaysia
| | - Kou-Juey Wu
- Cancer Genome Research Center, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan; Institute of Cellular and Organismic Biology, Academia Sinica, Taipei, Taiwan; Inst. of Clinical Medical Sciences, Chang Gung University, Taoyuan, Taiwan.
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15
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Abstract
The function of the Agtpbp1 gene has mainly been delineated by studying Agtpbp1pcd (pcd) mutant mice, characterized by losses in cerebellar Purkinje and granule cells along with degeneration of retinal photoreceptors, mitral cells of the olfactory bulb, thalamic neurons, and alpha-motoneurons. As a result of cerebellar degeneration, cerebellar GABA and glutamate concentrations in Agtpbp1pcd mutants decreased while monoamine concentrations increased. The salient behavioral phenotypes include cerebellar ataxia, a loss in motor coordination, and cognitive deficits. Similar neuropathogical and behavioral profiles have been described in childhood-onset human subjects with biallelic variants of AGTPBP1, including cerebellar ataxia and hypotonia.
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Affiliation(s)
- Robert Lalonde
- University of Rouen, Dept Psychology, 76821 Mont-Saint-Aignan, France; Laboratory of Stress, Immunity, Pathogens (EA7300), University of Lorraine Medical School, Vandœuvre-les-Nancy, France.
| | - Catherine Strazielle
- Laboratory of Stress, Immunity, Pathogens (EA7300), University of Lorraine Medical School, Vandœuvre-les-Nancy, France; CHRU Nancy, Vandœuvre-les-Nancy, France
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16
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Macías Á, Díaz-Larrosa JJ, Blanco Y, Fanjul V, González-Gómez C, Gonzalo P, Andrés-Manzano MJ, da Rocha AM, Ponce-Balbuena D, Allan A, Filgueiras-Rama D, Jalife J, Andrés V. Paclitaxel mitigates structural alterations and cardiac conduction system defects in a mouse model of Hutchinson-Gilford progeria syndrome. Cardiovasc Res 2022; 118:503-516. [PMID: 33624748 PMCID: PMC8803078 DOI: 10.1093/cvr/cvab055] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 11/11/2020] [Accepted: 02/09/2021] [Indexed: 12/12/2022] Open
Abstract
AIMS Hutchinson-Gilford progeria syndrome (HGPS) is an ultrarare laminopathy caused by expression of progerin, a lamin A variant, also present at low levels in non-HGPS individuals. HGPS patients age and die prematurely, predominantly from cardiovascular complications. Progerin-induced cardiac repolarization defects have been described previously, although the underlying mechanisms are unknown. METHODS AND RESULTS We conducted studies in heart tissue from progerin-expressing LmnaG609G/G609G (G609G) mice, including microscopy, intracellular calcium dynamics, patch-clamping, in vivo magnetic resonance imaging, and electrocardiography. G609G mouse cardiomyocytes showed tubulin-cytoskeleton disorganization, t-tubular system disruption, sarcomere shortening, altered excitation-contraction coupling, and reductions in ventricular thickening and cardiac index. G609G mice exhibited severe bradycardia, and significant alterations of atrio-ventricular conduction and repolarization. Most importantly, 50% of G609G mice had altered heart rate variability, and sinoatrial block, both significant signs of premature cardiac aging. G609G cardiomyocytes had electrophysiological alterations, which resulted in an elevated action potential plateau and early afterdepolarization bursting, reflecting slower sodium current inactivation and long Ca+2 transient duration, which may also help explain the mild QT prolongation in some HGPS patients. Chronic treatment with low-dose paclitaxel ameliorated structural and functional alterations in G609G hearts. CONCLUSIONS Our results demonstrate that tubulin-cytoskeleton disorganization in progerin-expressing cardiomyocytes causes structural, cardiac conduction, and excitation-contraction coupling defects, all of which can be partially corrected by chronic treatment with low dose paclitaxel.
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MESH Headings
- Action Potentials/drug effects
- Animals
- Anti-Arrhythmia Agents/pharmacology
- Arrhythmias, Cardiac/drug therapy
- Arrhythmias, Cardiac/genetics
- Arrhythmias, Cardiac/metabolism
- Arrhythmias, Cardiac/physiopathology
- Cytoskeleton/drug effects
- Cytoskeleton/metabolism
- Cytoskeleton/pathology
- Disease Models, Animal
- Excitation Contraction Coupling/drug effects
- Female
- Genetic Predisposition to Disease
- Heart Conduction System/drug effects
- Heart Conduction System/metabolism
- Heart Conduction System/physiopathology
- Heart Rate/drug effects
- Lamin Type A/genetics
- Lamin Type A/metabolism
- Male
- Mice, Mutant Strains
- Mutation
- Myocytes, Cardiac/drug effects
- Myocytes, Cardiac/metabolism
- Myocytes, Cardiac/pathology
- Paclitaxel/pharmacology
- Progeria/drug therapy
- Progeria/genetics
- Progeria/metabolism
- Progeria/physiopathology
- Refractory Period, Electrophysiological/drug effects
- Swine
- Swine, Miniature
- Tubulin/metabolism
- Mice
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Affiliation(s)
- Álvaro Macías
- Vascular Pathophysiology Area, Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), 28029 Madrid, Spain
| | - J Jaime Díaz-Larrosa
- Vascular Pathophysiology Area, Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), 28029 Madrid, Spain
| | - Yaazan Blanco
- Vascular Pathophysiology Area, Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), 28029 Madrid, Spain
| | - Víctor Fanjul
- Vascular Pathophysiology Area, Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), 28029 Madrid, Spain
| | - Cristina González-Gómez
- Vascular Pathophysiology Area, Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), 28029 Madrid, Spain
- CIBER en Enfermedades Cardiovasculares (CIBER-CV), Madrid, Spain
| | - Pilar Gonzalo
- Vascular Pathophysiology Area, Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), 28029 Madrid, Spain
| | - María Jesús Andrés-Manzano
- Vascular Pathophysiology Area, Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), 28029 Madrid, Spain
- CIBER en Enfermedades Cardiovasculares (CIBER-CV), Madrid, Spain
| | - Andre Monteiro da Rocha
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI 48109, USA
- Center for Arrhythmia Research, University of Michigan, Ann Arbor, MI 48109-2800, USA
| | - Daniela Ponce-Balbuena
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI 48109, USA
- Center for Arrhythmia Research, University of Michigan, Ann Arbor, MI 48109-2800, USA
| | - Andrew Allan
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI 48109, USA
- Center for Arrhythmia Research, University of Michigan, Ann Arbor, MI 48109-2800, USA
| | - David Filgueiras-Rama
- CIBER en Enfermedades Cardiovasculares (CIBER-CV), Madrid, Spain
- Department of Cardiology, Cardiac Electrophysiology Unit, Hospital Clínico San Carlos, 28040 Madrid, Spain
- Myocardial, Pathophysiology Area, Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), 28029 Madrid, Spain
| | - José Jalife
- CIBER en Enfermedades Cardiovasculares (CIBER-CV), Madrid, Spain
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI 48109, USA
- Center for Arrhythmia Research, University of Michigan, Ann Arbor, MI 48109-2800, USA
- Myocardial, Pathophysiology Area, Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), 28029 Madrid, Spain
| | - Vicente Andrés
- Vascular Pathophysiology Area, Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), 28029 Madrid, Spain
- CIBER en Enfermedades Cardiovasculares (CIBER-CV), Madrid, Spain
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17
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Landowski M, Bhute VJ, Takimoto T, Grindel S, Shahi PK, Pattnaik BR, Ikeda S, Ikeda A. A mutation in transmembrane protein 135 impairs lipid metabolism in mouse eyecups. Sci Rep 2022; 12:756. [PMID: 35031662 PMCID: PMC8760256 DOI: 10.1038/s41598-021-04644-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Accepted: 12/28/2021] [Indexed: 12/13/2022] Open
Abstract
Aging is a significant factor in the development of age-related diseases but how aging disrupts cellular homeostasis to cause age-related retinal disease is unknown. Here, we further our studies on transmembrane protein 135 (Tmem135), a gene involved in retinal aging, by examining the transcriptomic profiles of wild-type, heterozygous and homozygous Tmem135 mutant posterior eyecup samples through RNA sequencing (RNA-Seq). We found significant gene expression changes in both heterozygous and homozygous Tmem135 mutant mouse eyecups that correlate with visual function deficits. Further analysis revealed that expression of many genes involved in lipid metabolism are changed due to the Tmem135 mutation. Consistent with these changes, we found increased lipid accumulation in mutant Tmem135 eyecup samples. Since mutant Tmem135 mice have similar ocular pathologies as human age-related macular degeneration (AMD) eyes, we compared our homozygous Tmem135 mutant eyecup RNA-Seq dataset with transcriptomic datasets of human AMD donor eyes. We found similar changes in genes involved in lipid metabolism between the homozygous Tmem135 mutant eyecups and AMD donor eyes. Our study suggests that the Tmem135 mutation affects lipid metabolism as similarly observed in human AMD eyes, thus Tmem135 mutant mice can serve as a good model for the role of dysregulated lipid metabolism in AMD.
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Affiliation(s)
- Michael Landowski
- Department of Medical Genetics, University of Wisconsin-Madison, Madison, WI, USA
- McPherson Eye Research Institute, University of Wisconsin-Madison, Madison, WI, USA
| | - Vijesh J Bhute
- Department of Medical Genetics, University of Wisconsin-Madison, Madison, WI, USA
- Department of Chemical Engineering, Imperial College London, South Kensington, London, SW7 2AZ, UK
| | - Tetsuya Takimoto
- Department of Medical Genetics, University of Wisconsin-Madison, Madison, WI, USA
| | - Samuel Grindel
- Department of Medical Genetics, University of Wisconsin-Madison, Madison, WI, USA
| | - Pawan K Shahi
- Department of Medical Genetics, University of Wisconsin-Madison, Madison, WI, USA
- McPherson Eye Research Institute, University of Wisconsin-Madison, Madison, WI, USA
- Department of Ophthalmology and Visual Sciences, University of Wisconsin-Madison, Madison, WI, USA
| | - Bikash R Pattnaik
- Department of Medical Genetics, University of Wisconsin-Madison, Madison, WI, USA
- McPherson Eye Research Institute, University of Wisconsin-Madison, Madison, WI, USA
- Department of Ophthalmology and Visual Sciences, University of Wisconsin-Madison, Madison, WI, USA
| | - Sakae Ikeda
- Department of Medical Genetics, University of Wisconsin-Madison, Madison, WI, USA
- McPherson Eye Research Institute, University of Wisconsin-Madison, Madison, WI, USA
| | - Akihiro Ikeda
- Department of Medical Genetics, University of Wisconsin-Madison, Madison, WI, USA.
- McPherson Eye Research Institute, University of Wisconsin-Madison, Madison, WI, USA.
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18
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Bittel DC, Sreetama SC, Chandra G, Ziegler R, Nagaraju K, Van der Meulen JH, Jaiswal JK. Secreted acid sphingomyelinase as a potential gene therapy for limb girdle muscular dystrophy 2B. J Clin Invest 2022; 132:e141295. [PMID: 34981776 PMCID: PMC8718136 DOI: 10.1172/jci141295] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Accepted: 11/05/2021] [Indexed: 12/14/2022] Open
Abstract
Efficient sarcolemmal repair is required for muscle cell survival, with deficits in this process leading to muscle degeneration. Lack of the sarcolemmal protein dysferlin impairs sarcolemmal repair by reducing secretion of the enzyme acid sphingomyelinase (ASM), and causes limb girdle muscular dystrophy 2B (LGMD2B). The large size of the dysferlin gene poses a challenge for LGMD2B gene therapy efforts aimed at restoring dysferlin expression in skeletal muscle fibers. Here, we present an alternative gene therapy approach targeting reduced ASM secretion, the consequence of dysferlin deficit. We showed that the bulk endocytic ability is compromised in LGMD2B patient cells, which was addressed by extracellularly treating cells with ASM. Expression of secreted human ASM (hASM) using a liver-specific adeno-associated virus (AAV) vector restored membrane repair capacity of patient cells to healthy levels. A single in vivo dose of hASM-AAV in the LGMD2B mouse model restored myofiber repair capacity, enabling efficient recovery of myofibers from focal or lengthening contraction-induced injury. hASM-AAV treatment was safe, attenuated fibro-fatty muscle degeneration, increased myofiber size, and restored muscle strength, similar to dysferlin gene therapy. These findings elucidate the role of ASM in dysferlin-mediated plasma membrane repair and to our knowledge offer the first non-muscle-targeted gene therapy for LGMD2B.
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Affiliation(s)
- Daniel C. Bittel
- Center for Genetic Medicine Research, Children’s National Hospital, Washington, DC, USA
| | - Sen Chandra Sreetama
- Center for Genetic Medicine Research, Children’s National Hospital, Washington, DC, USA
| | - Goutam Chandra
- Center for Genetic Medicine Research, Children’s National Hospital, Washington, DC, USA
| | - Robin Ziegler
- Rare and Neurologic Diseases Research, Sanofi, Framingham, Massachusetts, USA
| | - Kanneboyina Nagaraju
- School of Pharmacy and Pharmaceutical Sciences, SUNY Binghamton University, Binghamton, New York, USA
| | | | - Jyoti K. Jaiswal
- Center for Genetic Medicine Research, Children’s National Hospital, Washington, DC, USA
- Department of Genomics and Precision Medicine, George Washington University School of Medicine and Health Sciences, Washington, DC, USA
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19
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Garcia AN, Casanova NG, Valera DG, Sun X, Song JH, Kempf CL, Moreno-Vinasco L, Burns K, Bermudez T, Valdez M, Cuellar G, Gregory T, Oita RC, Hernon VR, Barber C, Camp SM, Martin D, Liu Z, Bime C, Sammani S, Cress AE, Garcia JG. Involvement of eNAMPT/TLR4 signaling in murine radiation pneumonitis: protection by eNAMPT neutralization. Transl Res 2022; 239:44-57. [PMID: 34139379 PMCID: PMC8671169 DOI: 10.1016/j.trsl.2021.06.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 06/07/2021] [Accepted: 06/10/2021] [Indexed: 01/03/2023]
Abstract
Therapeutic strategies to prevent or reduce the severity of radiation pneumonitis are a serious unmet need. We evaluated extracellular nicotinamide phosphoribosyltransferase (eNAMPT), a damage-associated molecular pattern protein (DAMP) and Toll-Like Receptor 4 (TLR4) ligand, as a therapeutic target in murine radiation pneumonitis. Radiation-induced murine and human NAMPT expression was assessed in vitro, in tissues (IHC, biochemistry, imaging), and in plasma. Wild type C57Bl6 mice (WT) and Nampt+/- heterozygous mice were exposed to 20Gy whole thoracic lung irradiation (WTLI) with or without weekly IP injection of IgG1 (control) or an eNAMPT-neutralizing polyclonal (pAb) or monoclonal antibody (mAb). BAL protein/cells and H&E staining were used to generate a WTLI severity score. Differentially-expressed genes (DEGs)/pathways were identified by RNA sequencing and bioinformatic analyses. Radiation exposure increases in vitro NAMPT expression in lung epithelium (NAMPT promoter activity) and NAMPT lung tissue expression in WTLI-exposed mice. Nampt+/- mice and eNAMPT pAb/mAb-treated mice exhibited significant histologic attenuation of WTLI-mediated lung injury with reduced levels of BAL protein and cells, and plasma levels of eNAMPT, IL-6, and IL-1β. Genomic and biochemical studies from WTLI-exposed lung tissues highlighted dysregulation of NFkB/cytokine and MAP kinase signaling pathways which were rectified by eNAMPT mAb treatment. The eNAMPT/TLR4 pathway is essentially involved in radiation pathobiology with eNAMPT neutralization an effective therapeutic strategy to reduce the severity of radiation pneumonitis.
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Affiliation(s)
- Alexander N Garcia
- Department of Radiation Oncology, University of Arizona Health Sciences, Tucson, Arizona
| | - Nancy G Casanova
- Department of Medicine, University of Arizona Health Sciences, Tucson, Arizona
| | - Daniel G Valera
- Department of Radiation Oncology, University of Arizona Health Sciences, Tucson, Arizona
| | - Xiaoguang Sun
- Department of Medicine, University of Arizona Health Sciences, Tucson, Arizona
| | - Jin H Song
- Department of Medicine, University of Arizona Health Sciences, Tucson, Arizona
| | - Carrie L Kempf
- Department of Medicine, University of Arizona Health Sciences, Tucson, Arizona
| | | | - Kimberlie Burns
- Department of Medicine, University of Arizona Health Sciences, Tucson, Arizona
| | - Tadeo Bermudez
- Department of Medicine, University of Arizona Health Sciences, Tucson, Arizona
| | - Mia Valdez
- Department of Medicine, University of Arizona Health Sciences, Tucson, Arizona
| | - Genesis Cuellar
- Department of Medicine, University of Arizona Health Sciences, Tucson, Arizona
| | - Taylor Gregory
- Department of Medicine, University of Arizona Health Sciences, Tucson, Arizona
| | - Radu C Oita
- Department of Medicine, University of Arizona Health Sciences, Tucson, Arizona
| | - Vivian Reyes Hernon
- Department of Medicine, University of Arizona Health Sciences, Tucson, Arizona
| | - Christy Barber
- Department of Medical Imaging, University of Arizona Health Sciences, Tucson, Arizona
| | - Sara M Camp
- Department of Medicine, University of Arizona Health Sciences, Tucson, Arizona
| | - Diego Martin
- Department of Radiology and the Translational Imaging Center, Houston Methodist Research Institute, Houston, Texas
| | - Zhonglin Liu
- Department of Medical Imaging, University of Arizona Health Sciences, Tucson, Arizona
| | - Christian Bime
- Department of Medicine, University of Arizona Health Sciences, Tucson, Arizona
| | - Saad Sammani
- Department of Medicine, University of Arizona Health Sciences, Tucson, Arizona
| | - Anne E Cress
- Department of Cell and Molecular Medicine, University of Arizona Health Sciences, Tucson, Arizona
| | - Joe Gn Garcia
- Department of Medicine, University of Arizona Health Sciences, Tucson, Arizona.
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20
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Le Joncour A, Desbois AC, Leroyer AS, Tellier E, Régnier P, Maciejewski-Duval A, Comarmond C, Barete S, Arock M, Bruneval P, Launay JM, Fouret P, Blank U, Rosenzwajg M, Klatzmann D, Jarraya M, Chiche L, Koskas F, Cacoub P, Kaplanski G, Saadoun D. Mast cells drive pathologic vascular lesions in Takayasu arteritis. J Allergy Clin Immunol 2022; 149:292-301.e3. [PMID: 33992671 DOI: 10.1016/j.jaci.2021.05.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 04/30/2021] [Accepted: 05/04/2021] [Indexed: 11/19/2022]
Abstract
BACKGROUND Takayasu arteritis (TAK) is a large vessel vasculitis resulting in artery wall remodeling with segmental stenosis and/or aneurysm formation. Mast cells (MCs) are instrumental in bridging cell injury and inflammatory response. OBJECTIVES This study sought to investigate the contribution of MCs on vessel permeability, angiogenesis, and fibrosis in patients with TAK. METHODS MC activation and their tissue expression were assessed in sera and in aorta from patients with TAK and from healthy donors (HDs). In vivo permeability was assessed using a modified Miles assay. Subconfluent cultured human umbilic vein endothelial cells and fibroblasts were used in vitro to investigate the effects of MC mediators on angiogenesis and fibrogenesis. RESULTS This study found increased levels of MC activation markers (histamine and indoleamine 2,3-dioxygenase) in sera of patients with TAK compared with in sera of HDs. Marked expression of MCs was shown in aortic lesions of patients with TAK compared with in those of noninflammatory aorta controls. Using Miles assay, this study showed that sera of patients with TAK significantly increased vascular permeability in vivo as compared with that of HDs. Vessel permeability was abrogated in MC-deficient mice. MCs stimulated by sera of patients with TAK supported neoangiogenesis (increased human umbilic vein endothelial cell proliferation and branches) and fibrosis by inducing increased production of fibronectin, type 1 collagen, and α-smooth muscle actin by fibroblasts as compared to MCs stimulated by sera of HD. CONCLUSIONS MCs are a key regulator of vascular lesions in patients with TAK and may represent a new therapeutic target in large vessel vasculitis.
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Affiliation(s)
- Alexandre Le Joncour
- Department of Immunology-Immunopathology-Immunotherapy, Université Pierre-et-Marie-Curie Université de Paris 06, Unite Mixte de Recherche (UMR)S959, Institut National de la Santé et de la Recherche Médicale (INSERM), Sorbonne Universités, Paris, France; Department of Biotherapy, Hôpital Pitié-Salpêtrière, Paris, France; Department of Internal Medicine and Clinical Immunology, Centre National de Références Maladies Autoimmunes et Systémiques Rares, Centre National de Références Maladies Autoinflammatoires Rares et Amylose Inflammatoire, Paris, France
| | - Anne-Claire Desbois
- Department of Immunology-Immunopathology-Immunotherapy, Université Pierre-et-Marie-Curie Université de Paris 06, Unite Mixte de Recherche (UMR)S959, Institut National de la Santé et de la Recherche Médicale (INSERM), Sorbonne Universités, Paris, France; Department of Biotherapy, Hôpital Pitié-Salpêtrière, Paris, France; Department of Internal Medicine and Clinical Immunology, Centre National de Références Maladies Autoimmunes et Systémiques Rares, Centre National de Références Maladies Autoinflammatoires Rares et Amylose Inflammatoire, Paris, France
| | - Aurélie S Leroyer
- Centre de Recherche en CardioVasculaire et Nutrition, INSERM U1263, Inrae 1260, Aix-Marseille Université, Marseille, France
| | - Edwige Tellier
- Centre de Recherche en CardioVasculaire et Nutrition, INSERM U1263, Inrae 1260, Aix-Marseille Université, Marseille, France
| | - Paul Régnier
- Department of Immunology-Immunopathology-Immunotherapy, Université Pierre-et-Marie-Curie Université de Paris 06, Unite Mixte de Recherche (UMR)S959, Institut National de la Santé et de la Recherche Médicale (INSERM), Sorbonne Universités, Paris, France; Department of Biotherapy, Hôpital Pitié-Salpêtrière, Paris, France
| | - Anna Maciejewski-Duval
- Department of Immunology-Immunopathology-Immunotherapy, Université Pierre-et-Marie-Curie Université de Paris 06, Unite Mixte de Recherche (UMR)S959, Institut National de la Santé et de la Recherche Médicale (INSERM), Sorbonne Universités, Paris, France; Department of Biotherapy, Hôpital Pitié-Salpêtrière, Paris, France
| | - Cloé Comarmond
- Department of Immunology-Immunopathology-Immunotherapy, Université Pierre-et-Marie-Curie Université de Paris 06, Unite Mixte de Recherche (UMR)S959, Institut National de la Santé et de la Recherche Médicale (INSERM), Sorbonne Universités, Paris, France; Department of Biotherapy, Hôpital Pitié-Salpêtrière, Paris, France; Department of Internal Medicine and Clinical Immunology, Centre National de Références Maladies Autoimmunes et Systémiques Rares, Centre National de Références Maladies Autoinflammatoires Rares et Amylose Inflammatoire, Paris, France
| | - Stéphane Barete
- Department of Internal Medicine and Clinical Immunology, Centre National de Références Maladies Autoimmunes et Systémiques Rares, Centre National de Références Maladies Autoinflammatoires Rares et Amylose Inflammatoire, Paris, France; Department of Dermatology DMU3ID, Unité Fonctionnelle de Dermatologie, Groupe Hospitalier Pitié-Salpêtrière-C. Foix, Paris, France
| | - Michel Arock
- Cell Death and Drug Resistance in Lymphoproliferative Disorders Team, INSERM UMRS1138, Centre de Recherche des Cordeliers, Paris, France; Laboratoire d'Hématologie Biologique, Hôpital Pitié-Salpêtrière, Paris, France
| | - Patrick Bruneval
- Laboratoire d'anatomopathologie, Hôpital Européen Georges Pompidou, Paris, France
| | | | - Pierre Fouret
- Laboratoire d'Anatomopathologie, Groupe Hospitalier Pitié-Salpêtrière, Paris, France
| | - Ulrich Blank
- Center of Research on Inflammation, INSERM UMR S1149 and Centre National de la Recherche Scientifique Experimental Research Laboratory 8252, Universite de Paris, Sorbonne Paris Cite, Laboratoire d'Excellence INFLAMEX, Paris, France
| | - Michelle Rosenzwajg
- Department of Immunology-Immunopathology-Immunotherapy, Université Pierre-et-Marie-Curie Université de Paris 06, Unite Mixte de Recherche (UMR)S959, Institut National de la Santé et de la Recherche Médicale (INSERM), Sorbonne Universités, Paris, France; Department of Biotherapy, Hôpital Pitié-Salpêtrière, Paris, France; Department of Internal Medicine and Clinical Immunology, Centre National de Références Maladies Autoimmunes et Systémiques Rares, Centre National de Références Maladies Autoinflammatoires Rares et Amylose Inflammatoire, Paris, France
| | - David Klatzmann
- Department of Immunology-Immunopathology-Immunotherapy, Université Pierre-et-Marie-Curie Université de Paris 06, Unite Mixte de Recherche (UMR)S959, Institut National de la Santé et de la Recherche Médicale (INSERM), Sorbonne Universités, Paris, France; Department of Biotherapy, Hôpital Pitié-Salpêtrière, Paris, France; Department of Internal Medicine and Clinical Immunology, Centre National de Références Maladies Autoimmunes et Systémiques Rares, Centre National de Références Maladies Autoinflammatoires Rares et Amylose Inflammatoire, Paris, France
| | - Mohamed Jarraya
- Banque des Tissus Humains, Hôpital Saint Louis, Paris, France
| | - Laurent Chiche
- Service de Chirurgie Vasculaire, Groupe Hospitalier Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Fabien Koskas
- Service de Chirurgie Vasculaire, Groupe Hospitalier Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Patrice Cacoub
- Department of Immunology-Immunopathology-Immunotherapy, Université Pierre-et-Marie-Curie Université de Paris 06, Unite Mixte de Recherche (UMR)S959, Institut National de la Santé et de la Recherche Médicale (INSERM), Sorbonne Universités, Paris, France; Department of Biotherapy, Hôpital Pitié-Salpêtrière, Paris, France; Department of Internal Medicine and Clinical Immunology, Centre National de Références Maladies Autoimmunes et Systémiques Rares, Centre National de Références Maladies Autoinflammatoires Rares et Amylose Inflammatoire, Paris, France
| | - Gilles Kaplanski
- Centre de Recherche en CardioVasculaire et Nutrition, INSERM U1263, Inrae 1260, Aix-Marseille Université, Marseille, France; Service de Médecine Interne, Centre Hospitalier Universitaire Conception, Assistance Publique Hôpitaux de Marseille, Marseille, France
| | - David Saadoun
- Department of Immunology-Immunopathology-Immunotherapy, Université Pierre-et-Marie-Curie Université de Paris 06, Unite Mixte de Recherche (UMR)S959, Institut National de la Santé et de la Recherche Médicale (INSERM), Sorbonne Universités, Paris, France; Department of Biotherapy, Hôpital Pitié-Salpêtrière, Paris, France; Department of Internal Medicine and Clinical Immunology, Centre National de Références Maladies Autoimmunes et Systémiques Rares, Centre National de Références Maladies Autoinflammatoires Rares et Amylose Inflammatoire, Paris, France.
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21
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Majumder S, Pushpakumar S, Juin SK, Jala VR, Sen U. Toll-like receptor 4 mutation protects the kidney from Ang-II-induced hypertensive injury. Pharmacol Res 2022; 175:106030. [PMID: 34896544 PMCID: PMC8755630 DOI: 10.1016/j.phrs.2021.106030] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Revised: 12/06/2021] [Accepted: 12/07/2021] [Indexed: 01/03/2023]
Abstract
Cellular autophagy is a protective mechanism where cells degrade damaged organelles to maintain intracellular homeostasis. Apoptosis, on the other hand, is considered as programmed cell death. Interestingly, autophagy inhibits apoptosis by degrading apoptosis regulators. In hypertension, an imbalance of autophagy and apoptosis regulators can lead to renal injury and dysfunction. Previously, we have reported that toll-like receptor 4 (TLR4) mutant mice are protective against renal damage, in part, due to reduced oxidative stress and inflammation. However, the detailed mechanism remained elusive. In this study, we tested the hypothesis of whether TLR4 mutation reduces Ang-II-induced renal injury by inciting autophagy and suppressing apoptosis in the hypertensive kidney. Male mice with normal TLR4 expression (TLR4N, C3H/HeOuJ) and mutant TLR4 (TLR4M, C3H/HeJLps-d) aged 10-12 weeks were infused with Ang-II (1000 ng/kg/d) for 4 weeks to create hypertension. Saline infused appropriate control were used. Blood pressure was increased along with increased TLR4 expression in TLR4N mice receiving Ang-II compared to TLR4N control. Autophagy was downregulated, and apoptosis was upregulated in TLR4N mice treated with Ang-II. Also, kidney injury markers plasma lipocalin-2 (LCN2) and kidney injury molecule 1 (KIM-1) were upregulated in TLR4N mice treated with Ang-II. Besides, increased nuclear translocation and activity of NF-kB were measured in Ang-II-treated TLR4N mice. TLR4M mice remained protected against all these insults in hypertension. Together, these results suggest that Ang-II-induced TLR4 activation suppresses autophagy, induces apoptosis and kidney injury through in part by activating NF-kB signaling, and TLR4 mutation protects the kidney from Ang-II-induced hypertensive injury.
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Affiliation(s)
- Suravi Majumder
- Department of Internal Medicine, McGovern Medical School, University of Texas Health Science Center, Houston, TX 77030, USA
| | - Sathnur Pushpakumar
- Department of Physiology, University of Louisville School of Medicine, Louisville, KY 40202, USA
| | - Subir K Juin
- Department of Physiology, University of Louisville School of Medicine, Louisville, KY 40202, USA
| | - Venkatakrishna R Jala
- Department of Microbiology and Immunology, James Graham Brown Cancer Center, University of Louisville, Louisville, KY 40202, USA
| | - Utpal Sen
- Department of Physiology, University of Louisville School of Medicine, Louisville, KY 40202, USA.
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22
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Whittaker DE, Oleari R, Gregory LC, Le Quesne-Stabej P, Williams HJ, Torpiano JG, Formosa N, Cachia MJ, Field D, Lettieri A, Ocaka LA, Paganoni AJ, Rajabali SH, Riegman KL, De Martini LB, Chaya T, Robinson IC, Furukawa T, Cariboni A, Basson MA, Dattani MT. A recessive PRDM13 mutation results in congenital hypogonadotropic hypogonadism and cerebellar hypoplasia. J Clin Invest 2021; 131:e141587. [PMID: 34730112 PMCID: PMC8670848 DOI: 10.1172/jci141587] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Accepted: 10/27/2021] [Indexed: 11/17/2022] Open
Abstract
The positive regulatory (PR) domain containing 13 (PRDM13) putative chromatin modifier and transcriptional regulator functions downstream of the transcription factor PTF1A, which controls GABAergic fate in the spinal cord and neurogenesis in the hypothalamus. Here, we report a recessive syndrome associated with PRDM13 mutation. Patients exhibited intellectual disability, ataxia with cerebellar hypoplasia, scoliosis, and delayed puberty with congenital hypogonadotropic hypogonadism (CHH). Expression studies revealed Prdm13/PRDM13 transcripts in the developing hypothalamus and cerebellum in mouse and human. An analysis of hypothalamus and cerebellum development in mice homozygous for a Prdm13 mutant allele revealed a significant reduction in the number of Kisspeptin (Kiss1) neurons in the hypothalamus and PAX2+ progenitors emerging from the cerebellar ventricular zone. The latter was accompanied by ectopic expression of the glutamatergic lineage marker TLX3. Prdm13-deficient mice displayed cerebellar hypoplasia and normal gonadal structure, but delayed pubertal onset. Together, these findings identify PRDM13 as a critical regulator of GABAergic cell fate in the cerebellum and of hypothalamic kisspeptin neuron development, providing a mechanistic explanation for the cooccurrence of CHH and cerebellar hypoplasia in this syndrome. To our knowledge, this is the first evidence linking disrupted PRDM13-mediated regulation of Kiss1 neurons to CHH in humans.
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Affiliation(s)
- Danielle E. Whittaker
- Centre for Craniofacial and Regenerative Biology, King’s College London, London, United Kingdom
- Department of Comparative Biomedical Sciences, Royal Veterinary College, London, United Kingdom
| | - Roberto Oleari
- Department of Pharmacological and Biomolecular Sciences, University of Milan, Milan, Italy
| | - Louise C. Gregory
- Section of Molecular Basis of Rare Disease, Genetics and Genomic Medicine Research and Teaching Department, UCL Great Ormond Street Institute of Child Health, London, United Kingdom
| | - Polona Le Quesne-Stabej
- Section of Molecular Basis of Rare Disease, Genetics and Genomic Medicine Research and Teaching Department, UCL Great Ormond Street Institute of Child Health, London, United Kingdom
| | - Hywel J. Williams
- Section of Molecular Basis of Rare Disease, Genetics and Genomic Medicine Research and Teaching Department, UCL Great Ormond Street Institute of Child Health, London, United Kingdom
| | - GOSgene
- Section of Molecular Basis of Rare Disease, Genetics and Genomic Medicine Research and Teaching Department, UCL Great Ormond Street Institute of Child Health, London, United Kingdom
- GOSgene is detailed in Supplemental Acknowledgments
| | - John G. Torpiano
- Department of Paediatrics and
- Adult Endocrinology Service, Mater Dei Hospital, Msida, Malta
| | | | - Mario J. Cachia
- Adult Endocrinology Service, Mater Dei Hospital, Msida, Malta
| | - Daniel Field
- Centre for Craniofacial and Regenerative Biology, King’s College London, London, United Kingdom
| | - Antonella Lettieri
- Department of Pharmacological and Biomolecular Sciences, University of Milan, Milan, Italy
| | - Louise A. Ocaka
- Section of Molecular Basis of Rare Disease, Genetics and Genomic Medicine Research and Teaching Department, UCL Great Ormond Street Institute of Child Health, London, United Kingdom
| | - Alyssa J.J. Paganoni
- Department of Pharmacological and Biomolecular Sciences, University of Milan, Milan, Italy
| | - Sakina H. Rajabali
- Centre for Craniofacial and Regenerative Biology, King’s College London, London, United Kingdom
| | - Kimberley L.H. Riegman
- Centre for Craniofacial and Regenerative Biology, King’s College London, London, United Kingdom
| | - Lisa B. De Martini
- Department of Pharmacological and Biomolecular Sciences, University of Milan, Milan, Italy
| | - Taro Chaya
- Laboratory for Molecular and Developmental Biology, Institute for Protein Research, Osaka University, Osaka, Japan
| | | | - Takahisa Furukawa
- Laboratory for Molecular and Developmental Biology, Institute for Protein Research, Osaka University, Osaka, Japan
| | - Anna Cariboni
- Department of Pharmacological and Biomolecular Sciences, University of Milan, Milan, Italy
| | - M. Albert Basson
- Centre for Craniofacial and Regenerative Biology, King’s College London, London, United Kingdom
- MRC Centre for Neurodevelopmental Disorders, King’s College London, London, United Kingdom
| | - Mehul T. Dattani
- Section of Molecular Basis of Rare Disease, Genetics and Genomic Medicine Research and Teaching Department, UCL Great Ormond Street Institute of Child Health, London, United Kingdom
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23
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Zofkie W, Southard SM, Braun T, Lepper C. Fibroblast growth factor 6 regulates sizing of the muscle stem cell pool. Stem Cell Reports 2021; 16:2913-2927. [PMID: 34739848 PMCID: PMC8693628 DOI: 10.1016/j.stemcr.2021.10.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 10/06/2021] [Accepted: 10/07/2021] [Indexed: 11/25/2022] Open
Abstract
Skeletal muscle stem cells, i.e., satellite cells (SCs), are the essential source of new myonuclei for skeletal muscle regeneration following injury or chronic degenerative myopathies. Both SC number and regenerative capacity diminish during aging. However, molecular regulators that govern sizing of the initial SC pool are unknown. We demonstrate that fibroblast growth factor 6 (FGF6) is critical for SC pool scaling. Mice lacking FGF6 have reduced SCs of early postnatal origin and impaired regeneration. By contrast, increasing FGF6 during the early postnatal period is sufficient for SC expansion. Together, these data support that FGF6 is necessary and sufficient to modulate SC numbers during a critical postnatal period to establish the quiescent adult muscle stem cell pool. Our work highlights postnatal development as a time window receptive for scaling a somatic stem cell population via growth factor signaling, which might be relevant for designing new biomedical strategies to enhance tissue regeneration.
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Affiliation(s)
- William Zofkie
- Department of Physiology and Cell Biology, The Ohio State University, Columbus, OH, USA
| | | | - Thomas Braun
- Department of Cardiac Development and Remodeling, Max-Planck-Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Christoph Lepper
- Department of Physiology and Cell Biology, The Ohio State University, Columbus, OH, USA.
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24
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Kuehn HS, Chang J, Yamashita M, Niemela JE, Zou C, Okuyama K, Harada J, Stoddard JL, Nunes-Santos CJ, Boast B, Baxter RM, Hsieh EW, Garofalo M, Fleisher TA, Morio T, Taniuchi I, Dutmer CM, Rosenzweig SD. T and B cell abnormalities, pneumocystis pneumonia, and chronic lymphocytic leukemia associated with an AIOLOS defect in patients. J Exp Med 2021; 218:e20211118. [PMID: 34694366 PMCID: PMC8548914 DOI: 10.1084/jem.20211118] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 07/20/2021] [Accepted: 09/22/2021] [Indexed: 12/03/2022] Open
Abstract
AIOLOS/IKZF3 is a member of the IKAROS family of transcription factors. IKAROS/IKZF1 mutations have been previously associated with different forms of primary immunodeficiency. Here we describe a novel combined immunodeficiency due to an IKZF3 mutation in a family presenting with T and B cell involvement, Pneumocystis jirovecii pneumonia, and/or chronic lymphocytic leukemia. Patients carrying the AIOLOS p.N160S heterozygous variant displayed impaired humoral responses, abnormal B cell development (high percentage of CD21low B cells and negative CD23 expression), and abrogated CD40 responses. Naive T cells were increased, T cell differentiation was abnormal, and CD40L expression was dysregulated. In vitro studies demonstrated that the mutant protein failed DNA binding and pericentromeric targeting. The mutant was fully penetrant and had a dominant-negative effect over WT AIOLOS but not WT IKAROS. The human immunophenotype was recapitulated in a murine model carrying the corresponding human mutation. As demonstrated here, AIOLOS plays a key role in T and B cell development in humans, and the particular gene variant described is strongly associated with immunodeficiency and likely malignancy.
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MESH Headings
- Adult
- Animals
- B-Lymphocytes/pathology
- Child
- Female
- Humans
- Ikaros Transcription Factor/genetics
- Ikaros Transcription Factor/metabolism
- Leukemia, Lymphocytic, Chronic, B-Cell/blood
- Leukemia, Lymphocytic, Chronic, B-Cell/genetics
- Male
- Mice, Inbred C57BL
- Mice, Mutant Strains
- Middle Aged
- Mutation
- Pneumonia, Pneumocystis/blood
- Pneumonia, Pneumocystis/genetics
- T-Lymphocytes/pathology
- Exome Sequencing
- Mice
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Affiliation(s)
- Hye Sun Kuehn
- Immunology Service, Department of Laboratory Medicine, Clinical Center, National Institutes of Health, Bethesda, MD
| | - Jingjie Chang
- Laboratory for Transcriptional Regulation, RIKEN Center for Integrative Medical Sciences, Kanagawa, Japan
| | - Motoi Yamashita
- Department of Pediatrics and Developmental Biology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Julie E. Niemela
- Immunology Service, Department of Laboratory Medicine, Clinical Center, National Institutes of Health, Bethesda, MD
| | - Chengcheng Zou
- Laboratory for Transcriptional Regulation, RIKEN Center for Integrative Medical Sciences, Kanagawa, Japan
| | - Kazuki Okuyama
- Laboratory for Transcriptional Regulation, RIKEN Center for Integrative Medical Sciences, Kanagawa, Japan
| | - Junji Harada
- Laboratory for Transcriptional Regulation, RIKEN Center for Integrative Medical Sciences, Kanagawa, Japan
| | - Jennifer L. Stoddard
- Immunology Service, Department of Laboratory Medicine, Clinical Center, National Institutes of Health, Bethesda, MD
| | - Cristiane J. Nunes-Santos
- Immunology Service, Department of Laboratory Medicine, Clinical Center, National Institutes of Health, Bethesda, MD
| | - Brigette Boast
- Immunology Service, Department of Laboratory Medicine, Clinical Center, National Institutes of Health, Bethesda, MD
| | - Ryan M. Baxter
- Department of Immunology and Microbiology, University of Colorado School of Medicine, Aurora, CO
| | - Elena W.Y. Hsieh
- Department of Immunology and Microbiology, University of Colorado School of Medicine, Aurora, CO
- Division of Allergy and Immunology, Department of Pediatrics, University of Colorado School of Medicine, Children’s Hospital Colorado, Aurora, CO
| | - Mary Garofalo
- Immunology Service, Department of Laboratory Medicine, Clinical Center, National Institutes of Health, Bethesda, MD
| | - Thomas A. Fleisher
- Immunology Service, Department of Laboratory Medicine, Clinical Center, National Institutes of Health, Bethesda, MD
| | - Tomohiro Morio
- Department of Pediatrics and Developmental Biology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Ichiro Taniuchi
- Laboratory for Transcriptional Regulation, RIKEN Center for Integrative Medical Sciences, Kanagawa, Japan
| | - Cullen M. Dutmer
- Division of Allergy and Immunology, Department of Pediatrics, University of Colorado School of Medicine, Children’s Hospital Colorado, Aurora, CO
| | - Sergio D. Rosenzweig
- Immunology Service, Department of Laboratory Medicine, Clinical Center, National Institutes of Health, Bethesda, MD
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25
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Stamos DB, Clubb LM, Mitra A, Chopp LB, Nie J, Ding Y, Das A, Venkataganesh H, Lee J, El-Khoury D, Li L, Bhandoola A, Bosselut R, Love PE. The histone demethylase Lsd1 regulates multiple repressive gene programs during T cell development. J Exp Med 2021; 218:e20202012. [PMID: 34726730 PMCID: PMC8570297 DOI: 10.1084/jem.20202012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 08/27/2021] [Accepted: 09/30/2021] [Indexed: 11/27/2022] Open
Abstract
Analysis of the transcriptional profiles of developing thymocytes has shown that T lineage commitment is associated with loss of stem cell and early progenitor gene signatures and the acquisition of T cell gene signatures. Less well understood are the epigenetic alterations that accompany or enable these transcriptional changes. Here, we show that the histone demethylase Lsd1 (Kdm1a) performs a key role in extinguishing stem/progenitor transcriptional programs in addition to key repressive gene programs during thymocyte maturation. Deletion of Lsd1 caused a block in late T cell development and resulted in overexpression of interferon response genes as well as genes regulated by the Gfi1, Bcl6, and, most prominently, Bcl11b transcriptional repressors in CD4+CD8+ thymocytes. Transcriptional overexpression in Lsd1-deficient thymocytes was not always associated with increased H3K4 trimethylation at gene promoters, indicating that Lsd1 indirectly affects the expression of many genes. Together, these results identify a critical function for Lsd1 in the epigenetic regulation of multiple repressive gene signatures during T cell development.
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Affiliation(s)
- Daniel B. Stamos
- Section on Hematopoiesis and Lymphocyte Biology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD
| | - Lauren M. Clubb
- Section on Hematopoiesis and Lymphocyte Biology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD
| | - Apratim Mitra
- Bioinformatics and Scientific Programing Core, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD
| | - Laura B. Chopp
- Laboratory of Immune Cell Biology, Center for Cancer Research, National Cancer Institute, Bethesda, MD
| | - Jia Nie
- Laboratory of Immune Cell Biology, Center for Cancer Research, National Cancer Institute, Bethesda, MD
| | - Yi Ding
- Laboratory of Genome Integrity, Center for Cancer Research, National Cancer Institute, Bethesda, MD
| | - Arundhoti Das
- Laboratory of Genome Integrity, Center for Cancer Research, National Cancer Institute, Bethesda, MD
| | - Harini Venkataganesh
- Section on Hematopoiesis and Lymphocyte Biology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD
| | - Jan Lee
- Section on Hematopoiesis and Lymphocyte Biology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD
| | - Dalal El-Khoury
- Section on Hematopoiesis and Lymphocyte Biology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD
| | - LiQi Li
- Section on Hematopoiesis and Lymphocyte Biology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD
| | - Avinash Bhandoola
- Laboratory of Genome Integrity, Center for Cancer Research, National Cancer Institute, Bethesda, MD
| | - Remy Bosselut
- Laboratory of Immune Cell Biology, Center for Cancer Research, National Cancer Institute, Bethesda, MD
| | - Paul E. Love
- Section on Hematopoiesis and Lymphocyte Biology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD
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26
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Hikichi Y, Motomura Y, Takeuchi O, Moro K. Posttranscriptional regulation of ILC2 homeostatic function via tristetraprolin. J Exp Med 2021; 218:e20210181. [PMID: 34709349 PMCID: PMC8558840 DOI: 10.1084/jem.20210181] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 08/05/2021] [Accepted: 10/08/2021] [Indexed: 12/28/2022] Open
Abstract
Group 2 innate lymphoid cells (ILC2s) are unique in their ability to produce low levels of type 2 cytokines at steady state, and their production capacity is dramatically increased upon stimulation with IL-33. However, it is unknown how constitutive cytokine production is regulated in the steady state. Here, we found that tristetraprolin (TTP/Zfp36), an RNA-binding protein that induces mRNA degradation, was highly expressed in naive ILC2s and was downregulated following IL-33 stimulation. In ILC2s from Zfp36-/- mice, constitutive IL-5 production was elevated owing to the stabilization of its mRNA and resulted in an increased number of eosinophils in the intestine. Luciferase assay demonstrated that TTP directly regulates Il5 mRNA stability, and overexpression of TTP markedly suppressed IL-5 production by ILC2s, even under IL-33 stimulation. Collectively, TTP-mediated posttranscriptional regulation acts as a deterrent of excessive cytokine production in steady-state ILC2s to maintain body homeostasis, and downregulation of TTP may contribute to massive cytokine production under IL-33 stimulation.
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Affiliation(s)
- Yuki Hikichi
- Laboratory for Innate Immune Systems, RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa, Japan
- Division of Immunobiology, Department of Medical Life Science, Graduate School of Medical Life Science, Yokohama City University, Yokohama, Kanagawa, Japan
| | - Yasutaka Motomura
- Laboratory for Innate Immune Systems, RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa, Japan
- Laboratory for Innate Immune Systems, Department of Microbiology and Immunology, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan
- Laboratory for Innate Immune Systems, Osaka University Immunology Frontier Research Center, Suita, Osaka, Japan
| | - Osamu Takeuchi
- Department of Medical Chemistry, Graduate School of Medicine, Kyoto University, Sakyo-ku, Kyoto, Japan
| | - Kazuyo Moro
- Laboratory for Innate Immune Systems, RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa, Japan
- Division of Immunobiology, Department of Medical Life Science, Graduate School of Medical Life Science, Yokohama City University, Yokohama, Kanagawa, Japan
- Laboratory for Innate Immune Systems, Department of Microbiology and Immunology, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan
- Laboratory for Innate Immune Systems, Osaka University Immunology Frontier Research Center, Suita, Osaka, Japan
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27
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Kaifu T, Yabe R, Maruhashi T, Chung SH, Tateno H, Fujikado N, Hirabayashi J, Iwakura Y. DCIR and its ligand asialo-biantennary N-glycan regulate DC function and osteoclastogenesis. J Exp Med 2021; 218:e20210435. [PMID: 34817551 PMCID: PMC8624811 DOI: 10.1084/jem.20210435] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 07/16/2021] [Accepted: 09/23/2021] [Indexed: 11/04/2022] Open
Abstract
Dendritic cell immunoreceptor (DCIR) is a C-type lectin receptor with a carbohydrate recognition domain and an immunoreceptor tyrosine-based inhibitory motif. Previously, we showed that Dcir-/- mice spontaneously develop autoimmune enthesitis and sialadenitis, and also develop metabolic bone abnormalities. However, the ligands for DCIR functionality remain to be elucidated. Here we showed that DCIR is expressed on osteoclasts and DCs and binds to an asialo-biantennary N-glycan(s) (NA2) on bone cells and myeloid cells. Osteoclastogenesis was enhanced in Dcir-/- cells, and NA2 inhibited osteoclastogenesis. Neuraminidase treatment, which exposes excess NA2 by removing the terminal sialic acid of N-glycans, suppressed osteoclastogenesis and DC function. Neuraminidase treatment of mice ameliorated collagen-induced arthritis and experimental autoimmune encephalomyelitis in a DCIR-dependent manner, due to suppression of antigen presentation by DCs. These results suggest that DCIR activity is regulated by the modification of the terminal sialylation of biantennary N-glycans, and this interaction is important for the control of both autoimmune and bone metabolic diseases.
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MESH Headings
- Animals
- Arthritis, Experimental/chemically induced
- Arthritis, Experimental/drug therapy
- Cells, Cultured
- Dendritic Cells/immunology
- Dendritic Cells/physiology
- Encephalomyelitis, Autoimmune, Experimental/drug therapy
- HEK293 Cells
- Humans
- Lectins, C-Type/genetics
- Lectins, C-Type/metabolism
- Membrane Glycoproteins/genetics
- Membrane Glycoproteins/metabolism
- Mice, Inbred C57BL
- Mice, Mutant Strains
- Mice, Transgenic
- N-Acetylglucosaminyltransferases/genetics
- N-Acetylglucosaminyltransferases/metabolism
- Neuraminidase/metabolism
- Neuraminidase/pharmacology
- Osteoclasts/metabolism
- Osteogenesis/physiology
- Polysaccharides/metabolism
- Receptors, Immunologic/genetics
- Receptors, Immunologic/metabolism
- Mice
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Affiliation(s)
- Tomonori Kaifu
- Center for Animal Disease Models, Research Institution for Biological Sciences, Tokyo University of Science, Yamazaki, Noda, Chiba, Japan
- Core Research for Evolutional Science and Technology, Japan Science and Technology Agency, Saitama, Japan
| | - Rikio Yabe
- Center for Animal Disease Models, Research Institution for Biological Sciences, Tokyo University of Science, Yamazaki, Noda, Chiba, Japan
| | - Takumi Maruhashi
- Center for Animal Disease Models, Research Institution for Biological Sciences, Tokyo University of Science, Yamazaki, Noda, Chiba, Japan
- Japan Society for the Promotion of Science, Tokyo, Japan
| | - Soo-Hyun Chung
- Center for Animal Disease Models, Research Institution for Biological Sciences, Tokyo University of Science, Yamazaki, Noda, Chiba, Japan
- Core Research for Evolutional Science and Technology, Japan Science and Technology Agency, Saitama, Japan
| | - Hiroaki Tateno
- Glycan Lectin Engineering Team, Research Center for Stem Cell Engineering, National Institute of Advanced Industrial Science and Technology, Tsukuba, Japan
| | - Noriyuki Fujikado
- Center for Animal Disease Models, Research Institution for Biological Sciences, Tokyo University of Science, Yamazaki, Noda, Chiba, Japan
- Core Research for Evolutional Science and Technology, Japan Science and Technology Agency, Saitama, Japan
| | - Jun Hirabayashi
- Glycan Lectin Engineering Team, Research Center for Stem Cell Engineering, National Institute of Advanced Industrial Science and Technology, Tsukuba, Japan
| | - Yoichiro Iwakura
- Center for Animal Disease Models, Research Institution for Biological Sciences, Tokyo University of Science, Yamazaki, Noda, Chiba, Japan
- Core Research for Evolutional Science and Technology, Japan Science and Technology Agency, Saitama, Japan
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28
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Pyle CJ, Labeur-Iurman L, Groves HT, Puttur F, Lloyd CM, Tregoning JS, Harker JA. Enhanced IL-2 in early life limits the development of TFH and protective antiviral immunity. J Exp Med 2021; 218:e20201555. [PMID: 34665220 PMCID: PMC8529914 DOI: 10.1084/jem.20201555] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 08/23/2021] [Accepted: 09/23/2021] [Indexed: 01/03/2023] Open
Abstract
T follicular helper cell (TFH)-dependent antibody responses are critical for long-term immunity. Antibody responses are diminished in early life, limiting long-term protective immunity and allowing prolonged or recurrent infection, which may be important for viral lung infections that are highly prevalent in infancy. In a murine model using respiratory syncytial virus (RSV), we show that TFH and the high-affinity antibody production they promote are vital for preventing disease on RSV reinfection. Following a secondary RSV infection, TFH-deficient mice had significantly exacerbated disease characterized by delayed viral clearance, increased weight loss, and immunopathology. TFH generation in early life was compromised by heightened IL-2 and STAT5 signaling in differentiating naive T cells. Neutralization of IL-2 during early-life RSV infection resulted in a TFH-dependent increase in antibody-mediated immunity and was sufficient to limit disease severity upon reinfection. These data demonstrate the importance of TFH in protection against recurrent RSV infection and highlight a mechanism by which this is suppressed in early life.
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Affiliation(s)
- Chloe J. Pyle
- National Heart and Lung Institute, Imperial College London, South Kensington, London, UK
| | - Lucia Labeur-Iurman
- National Heart and Lung Institute, Imperial College London, South Kensington, London, UK
| | - Helen T. Groves
- Department of Infectious Disease, Imperial College London, St. Mary’s Campus, London, UK
| | - Franz Puttur
- National Heart and Lung Institute, Imperial College London, South Kensington, London, UK
| | - Clare M. Lloyd
- National Heart and Lung Institute, Imperial College London, South Kensington, London, UK
- Asthma UK Centre in Allergic Mechanisms for Asthma, London, UK
| | - John S. Tregoning
- Department of Infectious Disease, Imperial College London, St. Mary’s Campus, London, UK
| | - James A. Harker
- National Heart and Lung Institute, Imperial College London, South Kensington, London, UK
- Asthma UK Centre in Allergic Mechanisms for Asthma, London, UK
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29
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Nakajima T, Kanno T, Yokoyama S, Sasamoto S, Asou HK, Tumes DJ, Ohara O, Nakayama T, Endo Y. ACC1-expressing pathogenic T helper 2 cell populations facilitate lung and skin inflammation in mice. J Exp Med 2021; 218:e20210639. [PMID: 34813654 PMCID: PMC8614157 DOI: 10.1084/jem.20210639] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 09/12/2021] [Accepted: 10/22/2021] [Indexed: 12/14/2022] Open
Abstract
T cells possess distinguishing effector functions and drive inflammatory disorders. We have previously identified IL-5-producing Th2 cells as the pathogenic population predominantly involved in the pathology of allergic inflammation. However, the cell-intrinsic signaling pathways that control the pathogenic Th2 cell function are still unclear. We herein report the high expression of acetyl-CoA carboxylase 1 (ACC1) in the pathogenic CD4+ T cell population in the lung and skin. The genetic deletion of CD4+ T cell-intrinsic ACC1 dampened eosinophilic and basophilic inflammation in the lung and skin by constraining IL-5 or IL-3 production. Mechanistically, ACC1-dependent fatty acid biosynthesis induces the pathogenic cytokine production of CD4+ T cells via metabolic reprogramming and the availability of acetyl-CoA for epigenetic regulation. We thus identified a distinct phenotype of the pathogenic T cell population in the lung and skin, and ACC1 was shown to be an essential regulator controlling the pathogenic function of these populations to promote type 2 inflammation.
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Affiliation(s)
- Takahiro Nakajima
- Department of Frontier Research and Development, Laboratory of Medical Omics Research, Kazusa DNA Research Institute, Chiba, Japan
| | - Toshio Kanno
- Department of Frontier Research and Development, Laboratory of Medical Omics Research, Kazusa DNA Research Institute, Chiba, Japan
| | - Satoru Yokoyama
- Department of Frontier Research and Development, Laboratory of Medical Omics Research, Kazusa DNA Research Institute, Chiba, Japan
| | - Shigemi Sasamoto
- Department of Frontier Research and Development, Laboratory of Medical Omics Research, Kazusa DNA Research Institute, Chiba, Japan
| | - Hikari K. Asou
- Department of Frontier Research and Development, Laboratory of Medical Omics Research, Kazusa DNA Research Institute, Chiba, Japan
| | - Damon J. Tumes
- Centre for Cancer Biology, University of South Australia, North Terrace, Adelaide, Australia
| | - Osamu Ohara
- Department of Applied Genomics Kazusa DNA Research Institute, Chiba, Japan
| | - Toshinori Nakayama
- Department of Immunology, Graduate School of Medicine, Chiba University, Chiba, Japan
- AMED-CREST, AMED, Chiba, Japan
| | - Yusuke Endo
- Department of Frontier Research and Development, Laboratory of Medical Omics Research, Kazusa DNA Research Institute, Chiba, Japan
- Department of Omics Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan
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30
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Isringhausen S, Mun Y, Kovtonyuk L, Kräutler NJ, Suessbier U, Gomariz A, Spaltro G, Helbling PM, Wong HC, Nagasawa T, Manz MG, Oxenius A, Nombela-Arrieta C. Chronic viral infections persistently alter marrow stroma and impair hematopoietic stem cell fitness. J Exp Med 2021; 218:e20192070. [PMID: 34709350 PMCID: PMC8558839 DOI: 10.1084/jem.20192070] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 08/11/2021] [Accepted: 10/05/2021] [Indexed: 11/04/2022] Open
Abstract
Chronic viral infections are associated with hematopoietic suppression, bone marrow (BM) failure, and hematopoietic stem cell (HSC) exhaustion. However, how persistent viral challenge and inflammatory responses target BM tissues and perturb hematopoietic competence remains poorly understood. Here, we combine functional analyses with advanced 3D microscopy to demonstrate that chronic infection with lymphocytic choriomeningitis virus leads to (1) long-lasting decimation of the BM stromal network of mesenchymal CXCL12-abundant reticular cells, (2) proinflammatory transcriptional remodeling of remaining components of this key niche subset, and (3) durable functional defects and decreased competitive fitness in HSCs. Mechanistically, BM immunopathology is elicited by virus-specific, activated CD8 T cells, which accumulate in the BM via interferon-dependent mechanisms. Combined antibody-mediated inhibition of type I and II IFN pathways completely preempts degeneration of CARc and protects HSCs from chronic dysfunction. Hence, viral infections and ensuing immune reactions durably impact BM homeostasis by persistently decreasing the competitive fitness of HSCs and disrupting essential stromal-derived, hematopoietic-supporting cues.
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Affiliation(s)
- Stephan Isringhausen
- Department of Medical Oncology and Hematology, University Hospital Zurich, Zurich, Switzerland
| | - YeVin Mun
- Department of Medical Oncology and Hematology, University Hospital Zurich, Zurich, Switzerland
| | - Larisa Kovtonyuk
- Department of Medical Oncology and Hematology, University Hospital Zurich, Zurich, Switzerland
| | | | - Ute Suessbier
- Department of Medical Oncology and Hematology, University Hospital Zurich, Zurich, Switzerland
| | - Alvaro Gomariz
- Department of Medical Oncology and Hematology, University Hospital Zurich, Zurich, Switzerland
| | - Gianluca Spaltro
- Department of Medical Oncology and Hematology, University Hospital Zurich, Zurich, Switzerland
| | - Patrick M. Helbling
- Department of Medical Oncology and Hematology, University Hospital Zurich, Zurich, Switzerland
| | - Hui Chyn Wong
- Department of Medical Oncology and Hematology, University Hospital Zurich, Zurich, Switzerland
| | - Takashi Nagasawa
- Department of Microbiology and Immunology, Osaka University, Osaka, Japan
| | - Markus G. Manz
- Department of Medical Oncology and Hematology, University Hospital Zurich, Zurich, Switzerland
| | | | - César Nombela-Arrieta
- Department of Medical Oncology and Hematology, University Hospital Zurich, Zurich, Switzerland
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31
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Al Qureshah F, Sagadiev S, Thouvenel CD, Liu S, Hua Z, Hou B, Acharya M, James RG, Rawlings DJ. Activated PI3Kδ signals compromise plasma cell survival via limiting autophagy and increasing ER stress. J Exp Med 2021; 218:e20211035. [PMID: 34586341 PMCID: PMC8485856 DOI: 10.1084/jem.20211035] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 08/04/2021] [Accepted: 09/09/2021] [Indexed: 11/22/2022] Open
Abstract
While phosphatidylinositide 3-kinase delta (PI3Kδ) plays a critical role in humoral immunity, the requirement for PI3Kδ signaling in plasma cells remains poorly understood. Here, we used a conditional mouse model of activated PI3Kδ syndrome (APDS), to interrogate the function of PI3Kδ in plasma cell biology. Mice expressing a PIK3CD gain-of-function mutation (aPIK3CD) in B cells generated increased numbers of memory B cells and mounted an enhanced secondary response but exhibited a rapid decay of antibody levels over time. Consistent with these findings, aPIK3CD expression markedly impaired plasma cell generation, and expression of aPIK3CD intrinsically in plasma cells was sufficient to diminish humoral responses. Mechanistically, aPIK3CD disrupted ER proteostasis and autophagy, which led to increased plasma cell death. Notably, this defect was driven primarily by elevated mTORC1 signaling and modulated by treatment with PI3Kδ-specific inhibitors. Our findings establish an essential role for PI3Kδ in plasma cell homeostasis and suggest that modulating PI3Kδ activity may be useful for promoting and/or thwarting specific immune responses.
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Affiliation(s)
- Fahd Al Qureshah
- Center for Immunity and Immunotherapy, Seattle Children’s Research Institute, Seattle, WA
- Departments of Immunology, University of Washington, Seattle, WA
- King Abdulaziz City for Science and Technology, Riyadh, Saudi Arabia
| | - Sara Sagadiev
- Center for Immunity and Immunotherapy, Seattle Children’s Research Institute, Seattle, WA
| | | | - Shuozhi Liu
- Center for Immunity and Immunotherapy, Seattle Children’s Research Institute, Seattle, WA
| | - Zhaolin Hua
- Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Baidong Hou
- Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Mridu Acharya
- Center for Immunity and Immunotherapy, Seattle Children’s Research Institute, Seattle, WA
| | - Richard G. James
- Center for Immunity and Immunotherapy, Seattle Children’s Research Institute, Seattle, WA
- Departments of Pediatrics, University of Washington, Seattle, WA
- Departments of Pharmacology, University of Washington, Seattle, WA
| | - David J. Rawlings
- Center for Immunity and Immunotherapy, Seattle Children’s Research Institute, Seattle, WA
- Departments of Immunology, University of Washington, Seattle, WA
- Departments of Pediatrics, University of Washington, Seattle, WA
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32
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Kim H, Takegahara N, Choi Y. Protocadherin-7 Regulates Osteoclast Differentiation through Intracellular SET-Binding Domain-Mediated RhoA and Rac1 Activation. Int J Mol Sci 2021; 22:13117. [PMID: 34884920 PMCID: PMC8658210 DOI: 10.3390/ijms222313117] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 11/24/2021] [Accepted: 12/01/2021] [Indexed: 11/23/2022] Open
Abstract
Protocadherin-7 (Pcdh7) is a member of the non-clustered protocadherin δ1 subgroup of the cadherin superfamily. Although the cell-intrinsic role of Pcdh7 in osteoclast differentiation has been demonstrated, the molecular mechanisms of Pcdh7 regulating osteoclast differentiation remain to be determined. Here, we demonstrate that Pcdh7 contributes to osteoclast differentiation by regulating small GTPases, RhoA and Rac1, through its SET oncoprotein binding domain. Pcdh7 is associated with SET along with RhoA and Rac1 during osteoclast differentiation. Pcdh7-deficient (Pcdh7-/-) cells showed abolished RANKL-induced RhoA and Rac1 activation, and impaired osteoclast differentiation. Impaired osteoclast differentiation in Pcdh7-/- cells was restored by retroviral transduction of full-length Pcdh7 but not by a Pcdh7 mutant that lacks SET binding domain. The direct crosslink of the Pcdh7 intracellular region induced the activation of RhoA and Rac1, which was not observed when Pcdh7 lacks the SET binding domain. Additionally, retroviral transduction of the constitutively active form of RhoA and Rac1 completely restored the impaired osteoclast differentiation in Pcdh7-/- cells. Collectively, these results demonstrate that Pcdh7 controls osteoclast differentiation by regulating RhoA and Rac1 activation through the SET binding domain.
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Affiliation(s)
| | | | - Yongwon Choi
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; (H.K.); (N.T.)
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33
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Zarate N, Intihar TA, Yu D, Sawyer J, Tsai W, Syed M, Carlson L, Gomez-Pastor R. Heat Shock Factor 1 Directly Regulates Postsynaptic Scaffolding PSD-95 in Aging and Huntington's Disease and Influences Striatal Synaptic Density. Int J Mol Sci 2021; 22:13113. [PMID: 34884918 PMCID: PMC8657899 DOI: 10.3390/ijms222313113] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 12/01/2021] [Accepted: 12/01/2021] [Indexed: 12/15/2022] Open
Abstract
PSD-95 (Dlg4) is an ionotropic glutamate receptor scaffolding protein essential in synapse stability and neurotransmission. PSD-95 levels are reduced during aging and in neurodegenerative diseases like Huntington's disease (HD), and it is believed to contribute to synaptic dysfunction and behavioral deficits. However, the mechanism responsible for PSD-95 dysregulation under these conditions is unknown. The Heat Shock transcription Factor 1 (HSF1), canonically known for its role in protein homeostasis, is also depleted in both aging and HD. Synaptic protein levels, including PSD-95, are influenced by alterations in HSF1 levels and activity, but the direct regulatory relationship between PSD-95 and HSF1 has yet to be determined. Here, we showed that HSF1 chronic or acute reduction in cell lines and mice decreased PSD-95 expression. Furthermore, Hsf1(+/-) mice had reduced PSD-95 synaptic puncta that paralleled a loss in thalamo-striatal excitatory synapses, an important circuit disrupted early in HD. We demonstrated that HSF1 binds to regulatory elements present in the PSD-95 gene and directly regulates PSD-95 expression. HSF1 DNA-binding on the PSD-95 gene was disrupted in an age-dependent manner in WT mice and worsened in HD cells and mice, leading to reduced PSD-95 levels. These results demonstrate a direct role of HSF1 in synaptic gene regulation that has important implications in synapse maintenance in basal and pathological conditions.
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Affiliation(s)
| | | | | | | | | | | | | | - Rocio Gomez-Pastor
- Department of Neuroscience, School of Medicine, University of Minnesota, Minneapolis, MN 55455, USA; (N.Z.); (T.A.I.); (D.Y.); (J.S.); (W.T.); (M.S.); (L.C.)
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Wilfahrt D, Philips RL, Lama J, Kizerwetter M, Shapiro MJ, McCue SA, Kennedy MM, Rajcula MJ, Zeng H, Shapiro VS. Histone deacetylase 3 represses cholesterol efflux during CD4 + T-cell activation. eLife 2021; 10:e70978. [PMID: 34854376 PMCID: PMC8639145 DOI: 10.7554/elife.70978] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Accepted: 11/15/2021] [Indexed: 12/14/2022] Open
Abstract
After antigenic activation, quiescent naive CD4+ T cells alter their metabolism to proliferate. This metabolic shift increases production of nucleotides, amino acids, fatty acids, and sterols. Here, we show that histone deacetylase 3 (HDAC3) is critical for activation of murine peripheral CD4+ T cells. HDAC3-deficient CD4+ T cells failed to proliferate and blast after in vitro TCR/CD28 stimulation. Upon T-cell activation, genes involved in cholesterol biosynthesis are upregulated while genes that promote cholesterol efflux are repressed. HDAC3-deficient CD4+ T cells had reduced levels of cellular cholesterol both before and after activation. HDAC3-deficient cells upregulate cholesterol synthesis appropriately after activation, but fail to repress cholesterol efflux; notably, they overexpress cholesterol efflux transporters ABCA1 and ABCG1. Repression of these genes is the primary function for HDAC3 in peripheral CD4+ T cells, as addition of exogenous cholesterol restored proliferative capacity. Collectively, these findings demonstrate HDAC3 is essential during CD4+ T-cell activation to repress cholesterol efflux.
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Affiliation(s)
- Drew Wilfahrt
- Department of Immunology, Mayo ClinicRochesterUnited States
| | | | - Jyoti Lama
- Department of Immunology, Mayo ClinicRochesterUnited States
| | | | | | | | | | | | - Hu Zeng
- Department of Immunology, Mayo ClinicRochesterUnited States
- Division of Rheumatology, Department of Medicine, Mayo ClinicRochesterUnited States
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Carpentier KS, Sheridan RM, Lucas CJ, Davenport BJ, Li FS, Lucas ED, McCarthy MK, Reynoso GV, May NA, Tamburini BAJ, Hesselberth JR, Hickman HD, Morrison TE. MARCO + lymphatic endothelial cells sequester arthritogenic alphaviruses to limit viremia and viral dissemination. EMBO J 2021; 40:e108966. [PMID: 34618370 PMCID: PMC8591538 DOI: 10.15252/embj.2021108966] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Revised: 09/08/2021] [Accepted: 09/10/2021] [Indexed: 02/02/2023] Open
Abstract
Viremia in the vertebrate host is a major determinant of arboviral reservoir competency, transmission efficiency, and disease severity. However, immune mechanisms that control arboviral viremia are poorly defined. Here, we identify critical roles for the scavenger receptor MARCO in controlling viremia during arthritogenic alphavirus infections in mice. Following subcutaneous inoculation, arthritogenic alphavirus particles drain via the lymph and are rapidly captured by MARCO+ lymphatic endothelial cells (LECs) in the draining lymph node (dLN), limiting viral spread to the bloodstream. Upon reaching the bloodstream, alphavirus particles are cleared from the circulation by MARCO-expressing Kupffer cells in the liver, limiting viremia and further viral dissemination. MARCO-mediated accumulation of alphavirus particles in the draining lymph node and liver is an important host defense mechanism as viremia and viral tissue burdens are elevated in MARCO-/- mice and disease is more severe. In contrast to prior studies implicating a key role for lymph node macrophages in limiting viral dissemination, these findings exemplify a previously unrecognized arbovirus-scavenging role for lymphatic endothelial cells and improve our mechanistic understanding of viremia control during arthritogenic alphavirus infection.
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Affiliation(s)
- Kathryn S Carpentier
- Department of Immunology and MicrobiologyUniversity of Colorado School of MedicineAuroraCOUSA
| | - Ryan M Sheridan
- RNA Bioscience InitiativeUniversity of Colorado School of MedicineAuroraCOUSA
| | - Cormac J Lucas
- Department of Immunology and MicrobiologyUniversity of Colorado School of MedicineAuroraCOUSA
| | - Bennett J Davenport
- Department of Immunology and MicrobiologyUniversity of Colorado School of MedicineAuroraCOUSA
| | - Frances S Li
- Department of Immunology and MicrobiologyUniversity of Colorado School of MedicineAuroraCOUSA
| | - Erin D Lucas
- Department of Immunology and MicrobiologyUniversity of Colorado School of MedicineAuroraCOUSA
| | - Mary K McCarthy
- Department of Immunology and MicrobiologyUniversity of Colorado School of MedicineAuroraCOUSA
| | - Glennys V Reynoso
- Viral Immunity and Pathogenesis UnitLaboratory of Clinical Microbiology and ImmunologyNational Institutes of Allergy and Infectious DiseasesNIHBethesdaMDUSA
| | - Nicholas A May
- Department of Immunology and MicrobiologyUniversity of Colorado School of MedicineAuroraCOUSA
| | - Beth A J Tamburini
- Department of Immunology and MicrobiologyUniversity of Colorado School of MedicineAuroraCOUSA
- Division of Gastroenterology and HepatologyDepartment of MedicineUniversity of Colorado Anschutz Medical Campus School of MedicineAuroraCOUSA
| | - Jay R Hesselberth
- RNA Bioscience InitiativeUniversity of Colorado School of MedicineAuroraCOUSA
- Department of Biochemistry and Molecular GeneticsUniversity of Colorado School of MedicineAuroraCOUSA
| | - Heather D Hickman
- Viral Immunity and Pathogenesis UnitLaboratory of Clinical Microbiology and ImmunologyNational Institutes of Allergy and Infectious DiseasesNIHBethesdaMDUSA
| | - Thomas E Morrison
- Department of Immunology and MicrobiologyUniversity of Colorado School of MedicineAuroraCOUSA
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Hashizume S, Nakano M, Kubota K, Sato S, Himuro N, Kobayashi E, Takaoka A, Fujimiya M. Mindfulness intervention improves cognitive function in older adults by enhancing the level of miRNA-29c in neuron-derived extracellular vesicles. Sci Rep 2021; 11:21848. [PMID: 34750393 PMCID: PMC8575875 DOI: 10.1038/s41598-021-01318-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 10/26/2021] [Indexed: 01/13/2023] Open
Abstract
Although mindfulness-based stress reduction (MBSR) improves cognitive function, the mechanism is not clear. In this study, people aged 65 years and older were recruited from elderly communities in Chitose City, Japan, and assigned to a non-MBSR group or a MBSR group. Before and after the intervention, the Japanese version of the Montreal Cognitive Assessment (MoCA-J) was administered, and blood samples were collected. Then, neuron-derived extracellular vesicles (NDEVs) were isolated from blood samples, and microRNAs, as well as the target mRNAs, were evaluated in NDEVs. A linear mixed model analysis showed significant effects of the MBSR x time interaction on the MoCA-J scores, the expression of miRNA(miR)-29c, DNA methyltransferase 3 alpha (DNMT3A), and DNMT3B in NDEVs. These results indicate that MBSR can improve cognitive function by increasing the expression of miR-29c and decreasing the expression of DNMT3A, as well as DNMT3B, in neurons. It was also found that intracerebroventricular injection of miR-29c mimic into 5xFAD mice prevented cognitive decline, as well as neuronal loss in the subiculum area, by down-regulating Dnmt3a and Dnmt3b in the hippocampus. The present study suggests that MBSR can prevent neuronal loss and cognitive impairment by increasing the neuronal expression of miR-29c.
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Affiliation(s)
- Shin Hashizume
- Department of Anatomy, Sapporo Medical University School of Medicine, W17, S1, Chuo-ku, Sapporo, Hokkaido, 060-8556, Japan
| | - Masako Nakano
- Department of Anatomy, Sapporo Medical University School of Medicine, W17, S1, Chuo-ku, Sapporo, Hokkaido, 060-8556, Japan.
| | - Kenta Kubota
- Department of Anatomy, Sapporo Medical University School of Medicine, W17, S1, Chuo-ku, Sapporo, Hokkaido, 060-8556, Japan
- Department of Physical Therapy, Hokkaido Chitose Rehabilitation College, Chitose, Hokkaido, Japan
| | - Seiichi Sato
- Division of Signaling in Cancer and Immunology, Institute for Genetic Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
- Molecular Medical Biochemistry Unit, Biological Chemistry and Engineering Course, Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Nobuaki Himuro
- Department of Public Health, Sapporo Medical University School of Medicine, Sapporo, Hokkaido, Japan
| | - Eiji Kobayashi
- Department of Anatomy, Sapporo Medical University School of Medicine, W17, S1, Chuo-ku, Sapporo, Hokkaido, 060-8556, Japan
- Department of Physical Therapy, Faculty of Human Science, Hokkaido Bunkyo University, Eniwa, Hokkaido, Japan
| | - Akinori Takaoka
- Division of Signaling in Cancer and Immunology, Institute for Genetic Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
- Molecular Medical Biochemistry Unit, Biological Chemistry and Engineering Course, Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Mineko Fujimiya
- Department of Anatomy, Sapporo Medical University School of Medicine, W17, S1, Chuo-ku, Sapporo, Hokkaido, 060-8556, Japan
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Foliaki ST, Race B, Williams K, Baune C, Groveman BR, Haigh CL. Reduced SOD2 expression does not influence prion disease course or pathology in mice. PLoS One 2021; 16:e0259597. [PMID: 34735539 PMCID: PMC8568125 DOI: 10.1371/journal.pone.0259597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Accepted: 10/21/2021] [Indexed: 12/02/2022] Open
Abstract
Prion diseases are progressive, neurodegenerative diseases affecting humans and animals. Also known as the transmissible spongiform encephalopathies, for the hallmark spongiform change seen in the brain, these diseases manifest increased oxidative damage early in disease and changes in antioxidant enzymes in terminal brain tissue. Superoxide dismutase 2 (SOD2) is an antioxidant enzyme that is critical for life. SOD2 knock-out mice can only be kept alive for several weeks post-birth and only with antioxidant therapy. However, this results in the development of a spongiform encephalopathy. Consequently, we hypothesized that reduced levels of SOD2 may accelerate prion disease progression and play a critical role in the formation of spongiform change. Using SOD2 heterozygous knock-out and litter mate wild-type controls, we examined neuronal long-term potentiation, disease duration, pathology, and degree of spongiform change in mice infected with three strains of mouse adapted scrapie. No influence of the reduced SOD2 expression was observed in any parameter measured for any strain. We conclude that changes relating to SOD2 during prion disease are most likely secondary to the disease processes causing toxicity and do not influence the development of spongiform pathology.
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Affiliation(s)
- Simote T. Foliaki
- Prion Cell Biology Unit, Laboratory of Persistent Viral Diseases, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT, United States of America
| | - Brent Race
- Veterinary Biology Unit, Laboratory of Persistent Viral Diseases, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT, United States of America
| | - Katie Williams
- Prion Cell Biology Unit, Laboratory of Persistent Viral Diseases, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT, United States of America
| | - Chase Baune
- Veterinary Biology Unit, Laboratory of Persistent Viral Diseases, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT, United States of America
| | - Bradley R. Groveman
- Prion Cell Biology Unit, Laboratory of Persistent Viral Diseases, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT, United States of America
| | - Cathryn L. Haigh
- Prion Cell Biology Unit, Laboratory of Persistent Viral Diseases, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT, United States of America
- * E-mail:
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Lee J, Kawai K, Holt JR, Géléoc GSG. Sensory transduction is required for normal development and maturation of cochlear inner hair cell synapses. eLife 2021; 10:e69433. [PMID: 34734805 PMCID: PMC8598158 DOI: 10.7554/elife.69433] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 11/01/2021] [Indexed: 12/23/2022] Open
Abstract
Acoustic overexposure and aging can damage auditory synapses in the inner ear by a process known as synaptopathy. These insults may also damage hair bundles and the sensory transduction apparatus in auditory hair cells. However, a connection between sensory transduction and synaptopathy has not been established. To evaluate potential contributions of sensory transduction to synapse formation and development, we assessed inner hair cell synapses in several genetic models of dysfunctional sensory transduction, including mice lacking transmembrane channel-like (Tmc) 1, Tmc2, or both, in Beethoven mice which carry a dominant Tmc1 mutation and in Spinner mice which carry a recessive mutation in transmembrane inner ear (Tmie). Our analyses reveal loss of synapses in the absence of sensory transduction and preservation of synapses in Tmc1-null mice following restoration of sensory transduction via Tmc1 gene therapy. These results provide insight into the requirement of sensory transduction for hair cell synapse development and maturation.
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Affiliation(s)
- John Lee
- Speech and Hearing Bioscience & Technology Program, Division of Medical Sciences, Harvard UniversityBostonUnited States
- Department of Otolaryngology, Boston Children’s Hospital and Harvard Medical SchoolBostonUnited States
| | - Kosuke Kawai
- Department of Otolaryngology, Boston Children’s Hospital and Harvard Medical SchoolBostonUnited States
| | - Jeffrey R Holt
- Department of Otolaryngology, Boston Children’s Hospital and Harvard Medical SchoolBostonUnited States
- Department of Neurology, Boston Children’s Hospital and Harvard Medical SchoolBostonUnited States
| | - Gwenaëlle SG Géléoc
- Department of Otolaryngology, Boston Children’s Hospital and Harvard Medical SchoolBostonUnited States
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Zhang M, Pan X, Fujiwara K, Jurcak N, Muth S, Zhou J, Xiao Q, Li A, Che X, Li Z, Zheng L. Pancreatic cancer cells render tumor-associated macrophages metabolically reprogrammed by a GARP and DNA methylation-mediated mechanism. Signal Transduct Target Ther 2021; 6:366. [PMID: 34711804 PMCID: PMC8553927 DOI: 10.1038/s41392-021-00769-z] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 09/11/2021] [Accepted: 09/15/2021] [Indexed: 02/06/2023] Open
Abstract
How tumor-associated macrophages transit from a predominant antitumor M1-like phenotype to a protumoral M2-like phenotype during the development of pancreatic ductal adenocarcinoma (PDA) remains to be elucidated. We thus conducted a study by employing a PDA-macrophage co-culture system, an "orthotopic" PDA syngeneic mouse model, and human PDA specimens, together with macrophages derived from GARP knockout mice and multiple analytic tools including whole-genome RNA sequencing, DNA methylation arrays, multiplex immunohistochemistry, metabolism measurement, and invasion/metastasis assessment. Our study showed that PDA tumor cells, through direct cell-cell contact, induce DNA methylation and downregulation of a panel of glucose metabolism and OXPHOS genes selectively in M1-like macrophages, leading to a suppressed glucose metabolic status in M1-like but not in M2-like macrophages. Following the interaction with PDA tumor cells, M1-like macrophages are reprogrammed phenotypically to M2-like macrophages. The interaction between M1-like macrophages and PDA cells is mediated by GARP and integrin αV/β8, respectively. Blocking either GARP or integrin would suppress tumor-induced DNA methylation in Nqo-1 gene and the reprogramming of M1-like macrophages. Glucose-response genes such as Il-10 are subsequently activated in tumor-educated M1-like macrophages. Partly through Il-10 and its receptor Il-10R on tumor cells, M1-like macrophages functionally acquire a pro-cancerous capability. Both exogenous M1-like and M2-like macrophages promote metastasis in a mouse model of PDA while such a role of M1-like macrophages is dependent on DNA methylation. Our results suggest that PDA cells are able to reprogram M1-like macrophages metabolically and functionally through a GARP-dependent and DNA methylation-mediated mechanism to adopt a pro-cancerous fate.
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Affiliation(s)
- Mengwen Zhang
- Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
- The Sidney Kimmel Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
- The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Xingyi Pan
- Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
- The Sidney Kimmel Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
- The Pancreatic Cancer Precision Medicine Center of Excellence Program, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
- The Cellular and Molecular Medicine Graduate Program, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
| | - Kenji Fujiwara
- Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
- The Sidney Kimmel Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
- The Pancreatic Cancer Precision Medicine Center of Excellence Program, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
- Department of Surgery, Sada Hospital, Fukuoka, Japan
| | - Noelle Jurcak
- Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
- The Sidney Kimmel Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
- The Pancreatic Cancer Precision Medicine Center of Excellence Program, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
- The Cellular and Molecular Medicine Graduate Program, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
| | - Stephen Muth
- Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
- The Sidney Kimmel Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
- The Pancreatic Cancer Precision Medicine Center of Excellence Program, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
| | - Jiaojiao Zhou
- Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
- The Sidney Kimmel Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
- The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Qian Xiao
- Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
- The Sidney Kimmel Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
- The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Anqi Li
- Pelotonia Institute for Immune-Oncology, The Ohio State University Comprehensive Cancer Center, Columbus, OH, 43210, USA
| | - Xu Che
- Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
- The Sidney Kimmel Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
- The Pancreatic Cancer Precision Medicine Center of Excellence Program, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
- Cancer Hospital, Chinese Academy of Medical Sciences, Shenzhen, China
| | - Zihai Li
- Pelotonia Institute for Immune-Oncology, The Ohio State University Comprehensive Cancer Center, Columbus, OH, 43210, USA
| | - Lei Zheng
- Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA.
- The Sidney Kimmel Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA.
- The Pancreatic Cancer Precision Medicine Center of Excellence Program, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA.
- The Cellular and Molecular Medicine Graduate Program, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA.
- Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA.
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Kralik J, Kleinlogel S. Functional Availability of ON-Bipolar Cells in the Degenerated Retina: Timing and Longevity of an Optogenetic Gene Therapy. Int J Mol Sci 2021; 22:ijms222111515. [PMID: 34768944 PMCID: PMC8584043 DOI: 10.3390/ijms222111515] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 10/13/2021] [Accepted: 10/23/2021] [Indexed: 01/19/2023] Open
Abstract
Degenerative diseases of the retina are responsible for the death of photoreceptors and subsequent loss of vision in patients. Nevertheless, the inner retinal layers remain intact over an extended period of time, enabling the restoration of light sensitivity in blind retinas via the expression of optogenetic tools in the remaining retinal cells. The chimeric Opto-mGluR6 protein represents such a tool. With exclusive ON-bipolar cell expression, it combines the light-sensitive domains of melanopsin and the intracellular domains of the metabotropic glutamate receptor 6 (mGluR6), which naturally mediates light responses in these cells. Albeit vision restoration in blind mice by Opto-mGluR6 delivery was previously shown, much is left to be explored in regard to the effects of the timing of the treatment in the degenerated retina. We performed a functional evaluation of Opto-mGluR6-treated murine blind retinas using multi-electrode arrays (MEAs) and observed long-term functional preservation in the treated retinas, as well as successful therapeutical intervention in later stages of degeneration. Moreover, the treatment decreased the inherent retinal hyperactivity of the degenerated retinas to levels undistinguishable from healthy controls. Finally, we observed for the first time micro electroretinograms (mERGs) in optogenetically treated animals, corroborating the origin of Opto-mGluR6 signalling at the level of mGluR6 of ON-bipolar cells.
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Horie K, Maeda H, Nanashima N, Oey I. Potential Vasculoprotective Effects of Blackcurrant ( Ribes nigrum) Extract in Diabetic KK-A y Mice. Molecules 2021; 26:molecules26216459. [PMID: 34770868 PMCID: PMC8587626 DOI: 10.3390/molecules26216459] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Revised: 10/16/2021] [Accepted: 10/19/2021] [Indexed: 01/19/2023] Open
Abstract
Polyphenols are bioactive compounds found naturally in fruits and vegetables; they are widely used in disease prevention and health maintenance. Polyphenol-rich blackcurrant extract (BCE) exerts beneficial effects on vascular health in menopausal model animals. However, the vasculoprotective effects in diabetes mellitus (DM) and atherosclerotic vascular disease secondary to DM are unknown. Therefore, we investigated whether BCE is effective in preventing atherosclerosis using KK-Ay mice as a diabetes model. The mice were divided into three groups and fed a high-fat diet supplemented with 1% BCE (BCE1), 3% BCE (BCE2), or Control for 9 weeks. The mice in the BCE2 group showed a considerable reduction in the disturbance of elastic lamina, foam cell formation, and vascular remodeling compared to those in the BCE1 and Control groups. Immunohistochemical staining indicated that the score of endothelial nitric oxide synthase staining intensity was significantly higher in both BCE2 (2.9) and BCE1 (1.9) compared to that in the Control (1.1). Furthermore, the score for the percentage of alpha-smooth muscle actin was significantly lower in the BCE2 (2.9%) than in the Control (2.1%). Our results suggest that the intake of anthocyanin-rich BCE could have beneficial effects on the blood vessels of diabetic patients.
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Affiliation(s)
- Kayo Horie
- Department of Bioscience and Laboratory Medicine, Hirosaki University Graduate School of Health Sciences, Hirosaki 036-8564, Japan;
- Correspondence: ; Tel.: +81-172-39-5527
| | - Hayato Maeda
- Faculty of Agriculture and Life Science, Hirosaki University, Hirosaki 036-8561, Japan;
| | - Naoki Nanashima
- Department of Bioscience and Laboratory Medicine, Hirosaki University Graduate School of Health Sciences, Hirosaki 036-8564, Japan;
| | - Indrawati Oey
- Department of Food Science, University of Otago, P.O. Box 56, Dunedin 9054, New Zealand;
- Riddet Institute, Massey University, Private Bag 11 222, Palmerston North 4442, New Zealand
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Beilinson HA, Glynn RA, Yadavalli AD, Xiao J, Corbett E, Saribasak H, Arya R, Miot C, Bhattacharyya A, Jones JM, Pongubala JM, Bassing CH, Schatz DG. The RAG1 N-terminal region regulates the efficiency and pathways of synapsis for V(D)J recombination. J Exp Med 2021; 218:e20210250. [PMID: 34402853 PMCID: PMC8374863 DOI: 10.1084/jem.20210250] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 06/30/2021] [Accepted: 07/30/2021] [Indexed: 11/29/2022] Open
Abstract
Immunoglobulin and T cell receptor gene assembly depends on V(D)J recombination initiated by the RAG1-RAG2 recombinase. The RAG1 N-terminal region (NTR; aa 1-383) has been implicated in regulatory functions whose influence on V(D)J recombination and lymphocyte development in vivo is poorly understood. We generated mice in which RAG1 lacks ubiquitin ligase activity (P326G), the major site of autoubiquitination (K233R), or its first 215 residues (Δ215). While few abnormalities were detected in R1.K233R mice, R1.P326G mice exhibit multiple features indicative of reduced recombination efficiency, including an increased Igκ+:Igλ+ B cell ratio and decreased recombination of Igh, Igκ, Igλ, and Tcrb loci. Previous studies indicate that synapsis of recombining partners during Igh recombination occurs through two pathways: long-range scanning and short-range collision. We find that R1Δ215 mice exhibit reduced short-range Igh and Tcrb D-to-J recombination. Our findings indicate that the RAG1 NTR regulates V(D)J recombination and lymphocyte development by multiple pathways, including control of the balance between short- and long-range recombination.
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Affiliation(s)
- Helen A. Beilinson
- Department of Immunobiology, Yale School of Medicine, Yale University, New Haven, CT
| | - Rebecca A. Glynn
- Cell and Molecular Biology Graduate Group, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
- Department of Pathology and Laboratory Medicine, Children’s Hospital of Philadelphia, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Anurupa Devi Yadavalli
- Department of Immunobiology, Yale School of Medicine, Yale University, New Haven, CT
- Department of Animal Biology, School of Life Sciences, University of Hyderabad, Hyderabad, India
| | - Jianxiong Xiao
- Department of Immunobiology, Yale School of Medicine, Yale University, New Haven, CT
| | - Elizabeth Corbett
- Department of Immunobiology, Yale School of Medicine, Yale University, New Haven, CT
| | - Huseyin Saribasak
- Department of Immunobiology, Yale School of Medicine, Yale University, New Haven, CT
| | - Rahul Arya
- Department of Pathology and Laboratory Medicine, Children’s Hospital of Philadelphia, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Charline Miot
- Department of Pathology and Laboratory Medicine, Children’s Hospital of Philadelphia, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Anamika Bhattacharyya
- Department of Biochemistry and Molecular & Cellular Biology, Georgetown University, Washington, DC
| | - Jessica M. Jones
- Department of Biochemistry and Molecular & Cellular Biology, Georgetown University, Washington, DC
| | - Jagan M.R. Pongubala
- Department of Animal Biology, School of Life Sciences, University of Hyderabad, Hyderabad, India
| | - Craig H. Bassing
- Cell and Molecular Biology Graduate Group, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
- Department of Pathology and Laboratory Medicine, Children’s Hospital of Philadelphia, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - David G. Schatz
- Department of Immunobiology, Yale School of Medicine, Yale University, New Haven, CT
- Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, CT
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Bohrer AC, Castro E, Hu Z, Queiroz AT, Tocheny CE, Assmann M, Sakai S, Nelson C, Baker PJ, Ma H, Wang L, Zilu W, du Bruyn E, Riou C, Kauffman KD, Moore IN, Del Nonno F, Petrone L, Goletti D, Martineau AR, Lowe DM, Cronan MR, Wilkinson RJ, Barry CE, Via LE, Barber DL, Klion AD, Andrade BB, Song Y, Wong KW, Mayer-Barber KD. Eosinophils are part of the granulocyte response in tuberculosis and promote host resistance in mice. J Exp Med 2021; 218:e20210469. [PMID: 34347010 PMCID: PMC8348215 DOI: 10.1084/jem.20210469] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 05/16/2021] [Accepted: 07/13/2021] [Indexed: 12/15/2022] Open
Abstract
Host resistance to Mycobacterium tuberculosis (Mtb) infection requires the activities of multiple leukocyte subsets, yet the roles of the different innate effector cells during tuberculosis are incompletely understood. Here we uncover an unexpected association between eosinophils and Mtb infection. In humans, eosinophils are decreased in the blood but enriched in resected human tuberculosis lung lesions and autopsy granulomas. An influx of eosinophils is also evident in infected zebrafish, mice, and nonhuman primate granulomas, where they are functionally activated and degranulate. Importantly, using complementary genetic models of eosinophil deficiency, we demonstrate that in mice, eosinophils are required for optimal pulmonary bacterial control and host survival after Mtb infection. Collectively, our findings uncover an unexpected recruitment of eosinophils to the infected lung tissue and a protective role for these cells in the control of Mtb infection in mice.
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Affiliation(s)
- Andrea C. Bohrer
- Inflammation and Innate Immunity Unit, Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD
| | - Ehydel Castro
- Inflammation and Innate Immunity Unit, Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD
| | - Zhidong Hu
- Department of Scientific Research, Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
- Tuberculosis Center, Shanghai Emerging and Re-emerging Infectious Disease Institute, Fudan University, Shanghai, China
| | - Artur T.L. Queiroz
- The KAB group, Multinational Organization Network Sponsoring Translational and Epidemiological Research Initiative, Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador Brazil
| | - Claire E. Tocheny
- Inflammation and Innate Immunity Unit, Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD
| | - Maike Assmann
- Inflammation and Innate Immunity Unit, Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD
| | - Shunsuke Sakai
- T Lymphocyte Biology Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD
| | - Christine Nelson
- T Lymphocyte Biology Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD
| | - Paul J. Baker
- Inflammation and Innate Immunity Unit, Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD
| | - Hui Ma
- Department of Scientific Research, Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
- Tuberculosis Center, Shanghai Emerging and Re-emerging Infectious Disease Institute, Fudan University, Shanghai, China
| | - Lin Wang
- Tuberculosis Center, Shanghai Emerging and Re-emerging Infectious Disease Institute, Fudan University, Shanghai, China
- Department of Thoracic Surgery, Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - Wen Zilu
- Tuberculosis Center, Shanghai Emerging and Re-emerging Infectious Disease Institute, Fudan University, Shanghai, China
- Department of Thoracic Surgery, Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - Elsa du Bruyn
- Wellcome Centre for Infectious Diseases Research in Africa, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, South Africa
| | - Catherine Riou
- Wellcome Centre for Infectious Diseases Research in Africa, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, South Africa
| | - Keith D. Kauffman
- T Lymphocyte Biology Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD
| | - Tuberculosis Imaging Program
- Tuberculosis Imaging Program, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD
| | - Ian N. Moore
- Infectious Disease Pathogenesis Section, Comparative Medicine Branch, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD
| | - Franca Del Nonno
- Pathology Unit, National Institute for Infectious Diseases “L. Spallanzani,” Istituto Di Ricovero e Cura a Carattere Scientifico, Rome, Italy
| | - Linda Petrone
- Translational Research Unit, Department of Epidemiology and Preclinical Research National Institute for Infectious Diseases, Istituto Di Ricovero e Cura a Carattere Scientifico, Rome, Italy
| | - Delia Goletti
- Translational Research Unit, Department of Epidemiology and Preclinical Research National Institute for Infectious Diseases, Istituto Di Ricovero e Cura a Carattere Scientifico, Rome, Italy
| | - Adrian R. Martineau
- Institute of Immunity and Transplantation, University College London, London, UK
| | - David M. Lowe
- Institute of Immunity and Transplantation, University College London, London, UK
| | - Mark R. Cronan
- In Vivo Cell Biology of Infection Unit, Max Planck Institute for Infection Biology, Berlin, Germany
- Department of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, NC
| | - Robert J. Wilkinson
- Wellcome Centre for Infectious Diseases Research in Africa, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, South Africa
- Department of Infectious Diseases, Imperial College London, UK
- Francis Crick Institute, London, UK
| | - Clifton E. Barry
- Wellcome Centre for Infectious Diseases Research in Africa, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, South Africa
- Tuberculosis Research Section, Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD
| | - Laura E. Via
- Tuberculosis Imaging Program, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD
- Tuberculosis Research Section, Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD
| | - Daniel L. Barber
- T Lymphocyte Biology Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD
| | - Amy D. Klion
- Human Eosinophil Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD
| | - Bruno B. Andrade
- The KAB group, Multinational Organization Network Sponsoring Translational and Epidemiological Research Initiative, Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador Brazil
| | - Yanzheng Song
- Tuberculosis Center, Shanghai Emerging and Re-emerging Infectious Disease Institute, Fudan University, Shanghai, China
- Department of Thoracic Surgery, Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - Ka-Wing Wong
- Department of Scientific Research, Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
- Tuberculosis Center, Shanghai Emerging and Re-emerging Infectious Disease Institute, Fudan University, Shanghai, China
| | - Katrin D. Mayer-Barber
- Inflammation and Innate Immunity Unit, Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD
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Huen SC, Wang A, Feola K, Desrouleaux R, Luan HH, Hogg R, Zhang C, Zhang QJ, Liu ZP, Medzhitov R. Hepatic FGF21 preserves thermoregulation and cardiovascular function during bacterial inflammation. J Exp Med 2021; 218:e20202151. [PMID: 34406362 PMCID: PMC8374861 DOI: 10.1084/jem.20202151] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 06/22/2021] [Accepted: 08/02/2021] [Indexed: 12/16/2022] Open
Abstract
Sickness behaviors, including anorexia, are evolutionarily conserved responses to acute infections. Inflammation-induced anorexia causes dramatic metabolic changes, of which components critical to survival are unique depending on the type of inflammation. Glucose supplementation during the anorectic period induced by bacterial inflammation suppresses adaptive fasting metabolic pathways, including fibroblast growth factor 21 (FGF21), and decreases survival. Consistent with this observation, FGF21-deficient mice are more susceptible to mortality from endotoxemia and polybacterial peritonitis. Here, we report that increased circulating FGF21 during bacterial inflammation is hepatic derived and required for survival through the maintenance of thermogenesis, energy expenditure, and cardiac function. FGF21 signaling downstream of its obligate coreceptor, β-Klotho (KLB), is required in bacterial sepsis. However, FGF21 modulates thermogenesis and chronotropy independent of the adipose, forebrain, and hypothalamus, which are operative in cold adaptation, suggesting that in bacterial inflammation, either FGF21 signals through a novel, undescribed target tissue or concurrent signaling of multiple KLB-expressing tissues is required.
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Affiliation(s)
- Sarah C. Huen
- Department of Internal Medicine (Nephrology) and Pharmacology, University of Texas Southwestern Medical Center, Dallas, TX
| | - Andrew Wang
- Department of Internal Medicine (Rheumatology), Yale University School of Medicine, New Haven, CT
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT
| | - Kyle Feola
- Department of Internal Medicine (Nephrology) and Pharmacology, University of Texas Southwestern Medical Center, Dallas, TX
| | - Reina Desrouleaux
- Department of Internal Medicine (Rheumatology), Yale University School of Medicine, New Haven, CT
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT
| | - Harding H. Luan
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT
| | - Richard Hogg
- Department of Internal Medicine (Nephrology) and Pharmacology, University of Texas Southwestern Medical Center, Dallas, TX
| | - Cuiling Zhang
- Department of Internal Medicine (Rheumatology), Yale University School of Medicine, New Haven, CT
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT
| | - Qing-Jun Zhang
- Department of Internal Medicine (Cardiology) and Molecular Biology, University of Texas Southwestern Medical Center, Dallas, TX
| | - Zhi-Ping Liu
- Department of Internal Medicine (Cardiology) and Molecular Biology, University of Texas Southwestern Medical Center, Dallas, TX
| | - Ruslan Medzhitov
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT
- Howard Hughes Medical Institute, Chevy Chase, MD
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Lee GS, Kwak G, Bae JH, Han JP, Nam SH, Lee JH, Song S, Kim GD, Park TS, Choi YK, Choi BO, Yeom SC. Morc2a p.S87L mutant mice develop peripheral and central neuropathies associated with neuronal DNA damage and apoptosis. Dis Model Mech 2021; 14:dmm049123. [PMID: 34695197 PMCID: PMC8560500 DOI: 10.1242/dmm.049123] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 09/06/2021] [Indexed: 01/07/2023] Open
Abstract
The microrchidia (MORC)-family CW-type zinc finger 2 (MORC2) gene is related to DNA repair, adipogenesis and epigenetic silencing via the human silencing hub (HUSH) complex. MORC2 missense mutation is known to cause peripheral neuropathy of Charcot-Marie-Tooth disease type 2 Z (CMT2Z). However, there have been reports of peripheral and central neuropathy in patients, and the disease has been co-categorized with developmental delay, impaired growth, dysmorphic facies and axonal neuropathy (DIGFAN). The etiology of MORC2 mutation-mediated neuropathy remains uncertain. Here, we established and analyzed Morc2a p.S87L mutant mice. Morc2a p.S87L mice displayed the clinical symptoms expected in human CMT2Z patients, such as axonal neuropathy and skeletal muscle weakness. Notably, we observed severe central neuropathy with cerebella ataxia, cognition disorder and motor neuron degeneration in the spinal cord, and this seemed to be evidence of DIGFAN. Morc2a p.S87L mice exhibited an accumulation of DNA damage in neuronal cells, followed by p53/cytochrome c/caspase 9/caspase 3-mediated apoptosis. This study presents a new mouse model of CMT2Z and DIGFAN with a Morc2a p.S87L mutation. We suggest that neuronal apoptosis is a possible target for therapeutic approach in MORC2 missense mutation. This article has an associated First Person interview with the first author of the paper.
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Affiliation(s)
- Geon Seong Lee
- Graduate School of International Agricultural Technology and Institute of Green Bio Science and Technology, Seoul National University, 1447 Pyeongchang-Ro, Daewha, Pyeongchang, Kangwon 25354, South Korea
| | - Geon Kwak
- Department of Neurology, Sungkyunkwan University School of Medicine, 81 Irwonr-ro, Gangnam, Seoul 06351, South Korea
- Department of Health Science and Technology, SAIHST, Sungkyunkwan University School of Medicine, 81 Irwonr-ro, Gangnam, Seoul 06351, South Korea
| | - Ji Hyun Bae
- Graduate School of International Agricultural Technology and Institute of Green Bio Science and Technology, Seoul National University, 1447 Pyeongchang-Ro, Daewha, Pyeongchang, Kangwon 25354, South Korea
| | - Jeong Pil Han
- Graduate School of International Agricultural Technology and Institute of Green Bio Science and Technology, Seoul National University, 1447 Pyeongchang-Ro, Daewha, Pyeongchang, Kangwon 25354, South Korea
| | - Soo Hyun Nam
- Department of Neurology, Sungkyunkwan University School of Medicine, 81 Irwonr-ro, Gangnam, Seoul 06351, South Korea
| | - Jeong Hyeon Lee
- Graduate School of International Agricultural Technology and Institute of Green Bio Science and Technology, Seoul National University, 1447 Pyeongchang-Ro, Daewha, Pyeongchang, Kangwon 25354, South Korea
| | - Sumin Song
- Graduate School of International Agricultural Technology and Institute of Green Bio Science and Technology, Seoul National University, 1447 Pyeongchang-Ro, Daewha, Pyeongchang, Kangwon 25354, South Korea
| | - Gap-Don Kim
- Graduate School of International Agricultural Technology and Institute of Green Bio Science and Technology, Seoul National University, 1447 Pyeongchang-Ro, Daewha, Pyeongchang, Kangwon 25354, South Korea
| | - Tae Sub Park
- Graduate School of International Agricultural Technology and Institute of Green Bio Science and Technology, Seoul National University, 1447 Pyeongchang-Ro, Daewha, Pyeongchang, Kangwon 25354, South Korea
| | - Yang Kyu Choi
- Department of Laboratory Animal Medicine, College of Veterinary Medicine, Konkuk University, 120 Nueungdong-ro, Gwangjin, Seoul 05029, South Korea
| | - Byung-Ok Choi
- Department of Neurology, Sungkyunkwan University School of Medicine, 81 Irwonr-ro, Gangnam, Seoul 06351, South Korea
- Department of Health Science and Technology, SAIHST, Sungkyunkwan University School of Medicine, 81 Irwonr-ro, Gangnam, Seoul 06351, South Korea
- Stem Cell and Regenerative Medicine Institute, Samgsung Medical Center, Seoul 06351, South Korea
| | - Su Cheong Yeom
- Graduate School of International Agricultural Technology and Institute of Green Bio Science and Technology, Seoul National University, 1447 Pyeongchang-Ro, Daewha, Pyeongchang, Kangwon 25354, South Korea
- WCU Biomodulation Major, Department of Agricultural Biotechnology, Seoul National University, 1 Gwanak-ro, Gwanank, Seoul 08826, South Korea
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Lico C, Tanno B, Marchetti L, Novelli F, Giardullo P, Arcangeli C, Pazzaglia S, Podda MS, Santi L, Bernini R, Baschieri S, Mancuso M. Tomato Bushy Stunt Virus Nanoparticles as a Platform for Drug Delivery to Shh-Dependent Medulloblastoma. Int J Mol Sci 2021; 22:10523. [PMID: 34638864 PMCID: PMC8509062 DOI: 10.3390/ijms221910523] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 09/23/2021] [Accepted: 09/27/2021] [Indexed: 12/14/2022] Open
Abstract
Medulloblastoma (MB) is a primary central nervous system tumor affecting mainly young children. New strategies of drug delivery are urgent to treat MB and, in particular, the SHH-dependent subtype-the most common in infants-in whom radiotherapy is precluded due to the severe neurological side effects. Plant virus nanoparticles (NPs) represent an innovative solution for this challenge. Tomato bushy stunt virus (TBSV) was functionally characterized as a carrier for drug targeted delivery to a murine model of Shh-MB. The TBSV NPs surface was genetically engineered with peptides for brain cancer cell targeting, and the modified particles were produced on a large scale using Nicotiana benthamiana plants. Tests on primary cultures of Shh-MB cells allowed us to define the most efficient peptides able to induce specific uptake of TBSV. Immunofluorescence and molecular dynamics simulations supported the hypothesis that the specific targeting of the NPs was mediated by the interaction of the peptides with their natural partners and reinforced by the presentation in association with the virus. In vitro experiments demonstrated that the delivery of Doxorubicin through the chimeric TBSV allowed reducing the dose of the chemotherapeutic agent necessary to induce a significant decrease in tumor cells viability. Moreover, the systemic administration of TBSV NPs in MB symptomatic mice, independently of sex, confirmed the ability of the virus to reach the tumor in a specific manner. A significant advantage in the recognition of the target appeared when TBSV NPs were functionalized with the CooP peptide. Overall, these results open new perspectives for the use of TBSV as a vehicle for the targeted delivery of chemotherapeutics to MB in order to reduce early and late toxicity.
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Affiliation(s)
- Chiara Lico
- Laboratory of Biotechnology, Italian National Agency for New Technologies, Energy and Sustainable Economic Development, ENEA, Casaccia Research Center, Via Anguillarese 301, 00123 Rome, Italy;
| | - Barbara Tanno
- Laboratory of Biomedical Technologies, Italian National Agency for New Technologies, Energy and Sustainable Economic Development, ENEA, Casaccia Research Center, Via Anguillarese 301, 00123 Rome, Italy; (B.T.); (L.M.); (F.N.); (P.G.); (S.P.)
| | - Luca Marchetti
- Laboratory of Biomedical Technologies, Italian National Agency for New Technologies, Energy and Sustainable Economic Development, ENEA, Casaccia Research Center, Via Anguillarese 301, 00123 Rome, Italy; (B.T.); (L.M.); (F.N.); (P.G.); (S.P.)
| | - Flavia Novelli
- Laboratory of Biomedical Technologies, Italian National Agency for New Technologies, Energy and Sustainable Economic Development, ENEA, Casaccia Research Center, Via Anguillarese 301, 00123 Rome, Italy; (B.T.); (L.M.); (F.N.); (P.G.); (S.P.)
| | - Paola Giardullo
- Laboratory of Biomedical Technologies, Italian National Agency for New Technologies, Energy and Sustainable Economic Development, ENEA, Casaccia Research Center, Via Anguillarese 301, 00123 Rome, Italy; (B.T.); (L.M.); (F.N.); (P.G.); (S.P.)
| | - Caterina Arcangeli
- Laboratory of Health and Environment, Italian National Agency for New Technologies, Energy and Sustainable Economic Development, ENEA, Casaccia Research Center, Via Anguillarese 301, 00123 Rome, Italy; (C.A.); (M.S.P.)
| | - Simonetta Pazzaglia
- Laboratory of Biomedical Technologies, Italian National Agency for New Technologies, Energy and Sustainable Economic Development, ENEA, Casaccia Research Center, Via Anguillarese 301, 00123 Rome, Italy; (B.T.); (L.M.); (F.N.); (P.G.); (S.P.)
| | - Maurizio S. Podda
- Laboratory of Health and Environment, Italian National Agency for New Technologies, Energy and Sustainable Economic Development, ENEA, Casaccia Research Center, Via Anguillarese 301, 00123 Rome, Italy; (C.A.); (M.S.P.)
| | - Luca Santi
- Department of Agriculture and Forest Sciences (DAFNE), University of Tuscia, Via S. Camillo De Lellis, 01100 Viterbo, Italy; (L.S.); (R.B.)
| | - Roberta Bernini
- Department of Agriculture and Forest Sciences (DAFNE), University of Tuscia, Via S. Camillo De Lellis, 01100 Viterbo, Italy; (L.S.); (R.B.)
| | - Selene Baschieri
- Laboratory of Biotechnology, Italian National Agency for New Technologies, Energy and Sustainable Economic Development, ENEA, Casaccia Research Center, Via Anguillarese 301, 00123 Rome, Italy;
| | - Mariateresa Mancuso
- Laboratory of Biomedical Technologies, Italian National Agency for New Technologies, Energy and Sustainable Economic Development, ENEA, Casaccia Research Center, Via Anguillarese 301, 00123 Rome, Italy; (B.T.); (L.M.); (F.N.); (P.G.); (S.P.)
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Pan G, Roy B, Palaniyandi SS. Diabetic Aldehyde Dehydrogenase 2 Mutant (ALDH2*2) Mice Are More Susceptible to Cardiac Ischemic-Reperfusion Injury Due to 4-Hydroxy-2-Nonenal Induced Coronary Endothelial Cell Damage. J Am Heart Assoc 2021; 10:e021140. [PMID: 34482710 PMCID: PMC8649540 DOI: 10.1161/jaha.121.021140] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Background Aldehyde dehydrogenase‐2 (ALDH2), a mitochondrial enzyme, detoxifies reactive aldehydes such as 4‐hydroxy‐2‐nonenal (4HNE). A highly prevalent E487K mutation in ALDH2 (ALDH2*2) in East Asian people with intrinsic low ALDH2 activity is implicated in diabetic complications. 4HNE‐induced cardiomyocyte dysfunction was studied in diabetic cardiac damage; however, coronary endothelial cell (CEC) injury in myocardial ischemia‐reperfusion injury (IRI) in diabetic mice has not been studied. Therefore, we hypothesize that the lack of ALDH2 activity exacerbates 4HNE‐induced CEC dysfunction which leads to cardiac damage in ALDH2*2 mutant diabetic mice subjected to myocardial IRI. Methods and Results Three weeks after diabetes mellitus (DM) induction, hearts were subjected to IRI either in vivo via left anterior descending artery occlusion and release or ex vivo IRI by using the Langendorff system. The cardiac performance was assessed by conscious echocardiography in mice or by inserting a balloon catheter in the left ventricle in the ex vivo model. Just 3 weeks of DM led to an increase in cardiac 4HNE protein adducts and, cardiac dysfunction, and a decrease in the number of CECs along with reduced myocardial ALDH2 activity in ALDH2*2 mutant diabetic mice compared with their wild‐type counterparts. Systemic pretreatment with Alda‐1 (10 mg/kg per day), an activator of both ALDH2 and ALDH2*2, led to a reduction in myocardial infarct size and dysfunction, and coronary perfusion pressure upon cardiac IRI by increasing CEC population and coronary arteriole opening. Conclusions Low ALDH2 activity exacerbates 4HNE‐mediated CEC injury and thereby cardiac dysfunction in diabetic mouse hearts subjected to IRI, which can be reversed by ALDH2 activation.
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Affiliation(s)
- Guodong Pan
- Division of Hypertension and Vascular ResearchDepartment of Internal MedicineHenry Ford Health SystemDetroitMI
| | - Bipradas Roy
- Division of Hypertension and Vascular ResearchDepartment of Internal MedicineHenry Ford Health SystemDetroitMI
- Department of PhysiologyWayne State UniversityDetroitMI
| | - Suresh Selvaraj Palaniyandi
- Division of Hypertension and Vascular ResearchDepartment of Internal MedicineHenry Ford Health SystemDetroitMI
- Department of PhysiologyWayne State UniversityDetroitMI
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Abstract
The cerebellum consists of parallel circuit modules that contribute to diverse behaviors, spanning motor to cognitive. Recent work employing cell-type-specific tracing has identified circumscribed output channels of the cerebellar nuclei (CbN) that could confer tight functional specificity. These studies have largely focused on excitatory projections of the CbN, however, leaving open the question of whether inhibitory neurons also constitute multiple output modules. We mapped output and input patterns to intersectionally restricted cell types of the interposed and adjacent interstitial nuclei in mice. In contrast to the widespread assumption of primarily excitatory outputs and restricted inferior olive-targeting inhibitory output, we found that inhibitory neurons from this region ramified widely within the brainstem, targeting both motor- and sensory-related nuclei, distinct from excitatory output targets. Despite differences in output targeting, monosynaptic rabies tracing revealed largely shared afferents to both cell classes. We discuss the potential novel functional roles for inhibitory outputs in the context of cerebellar theory.
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Affiliation(s)
- Elena N Judd
- Department of Physiology and Biophysics, University of Colorado School of Medicine, Anschutz Medical CampusAuroraUnited States
| | - Samantha M Lewis
- Department of Physiology and Biophysics, University of Colorado School of Medicine, Anschutz Medical CampusAuroraUnited States
| | - Abigail L Person
- Department of Physiology and Biophysics, University of Colorado School of Medicine, Anschutz Medical CampusAuroraUnited States
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49
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Wan J, Wang J, Wagner LE, Wang OH, Gui F, Chen J, Zhu X, Haddock AN, Edenfield BH, Haight B, Mukhopadhyay D, Wang Y, Yule DI, Bi Y, Ji B. Pancreas-specific CHRM3 activation causes pancreatitis in mice. JCI Insight 2021; 6:132585. [PMID: 34314386 PMCID: PMC8492327 DOI: 10.1172/jci.insight.132585] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Accepted: 07/22/2021] [Indexed: 12/26/2022] Open
Abstract
Hyperstimulation of the cholecystokinin 1 receptor (CCK1R), a G protein-coupled receptor (GPCR), in pancreatic acinar cells is commonly used to induce pancreatitis in rodents. Human pancreatic acinar cells lack CCK1R but express cholinergic receptor muscarinic 3 (M3R), another GPCR. To test whether M3R activation is involved in pancreatitis, a mutant M3R was conditionally expressed in pancreatic acinar cells in mice. This mutant receptor loses responsiveness to its native ligand, acetylcholine, but can be activated by an inert small molecule, clozapine-N-oxide (CNO). Intracellular calcium and amylase were elicited by CNO in pancreatic acinar cells isolated from mutant M3R mice but not WT mice. Similarly, acute pancreatitis (AP) could be induced by a single injection of CNO in the transgenic mice but not WT mice. Compared with the cerulein-induced AP, CNO caused more widespread acinar cell death and inflammation. Furthermore, chronic pancreatitis developed at 4 weeks after 3 episodes of CNO-induced AP. In contrast, in mice with 3 recurrent episodes of cerulein-included AP, pancreas histology was restored in 4 weeks. Furthermore, the M3R antagonist ameliorated the severity of cerulein-induced AP in WT mice. We conclude that M3R activation can cause the pathogenesis of pancreatitis. This model may provide an alternative approach for pancreatitis research.
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Affiliation(s)
- Jianhua Wan
- Department of Cancer Biology, Mayo Clinic, Jacksonville, Florida, USA
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, PR China
| | - Jiale Wang
- Department of Cancer Biology, Mayo Clinic, Jacksonville, Florida, USA
| | - Larry E. Wagner
- Department of Pharmacology and Physiology, University of Rochester, Rochester, New York, USA
| | - Oliver H. Wang
- Department of Cancer Biology, Mayo Clinic, Jacksonville, Florida, USA
| | - Fu Gui
- Department of Cancer Biology, Mayo Clinic, Jacksonville, Florida, USA
| | - Jiaxiang Chen
- Department of Cancer Biology, Mayo Clinic, Jacksonville, Florida, USA
| | - Xiaohui Zhu
- Department of Cancer Biology, Mayo Clinic, Jacksonville, Florida, USA
| | - Ashley N. Haddock
- Department of Cancer Biology, Mayo Clinic, Jacksonville, Florida, USA
| | | | - Brian Haight
- Prodo Laboratories Inc., Aliso Viejo, California, USA
| | - Debabrata Mukhopadhyay
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Jacksonville, Florida, USA
| | - Ying Wang
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - David I. Yule
- Department of Pharmacology and Physiology, University of Rochester, Rochester, New York, USA
| | - Yan Bi
- Department of Gastroenterology and Hepatology, Mayo Clinic, Jacksonville, Florida, USA
| | - Baoan Ji
- Department of Cancer Biology, Mayo Clinic, Jacksonville, Florida, USA
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50
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Li S, Wang L, Xu Z, Huang Y, Xue R, Yue T, Xu L, Gong F, Bai S, Wu Q, Liu J, Lin B, Zhang H, Xue Y, Xu P, Hou J, Yang X, Jin T, Zhou R, Lou J, Xu T, Bai L. ASC deglutathionylation is a checkpoint for NLRP3 inflammasome activation. J Exp Med 2021; 218:e20202637. [PMID: 34342641 PMCID: PMC8340566 DOI: 10.1084/jem.20202637] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 05/08/2021] [Accepted: 06/17/2021] [Indexed: 12/04/2022] Open
Abstract
Activation of NLRP3 inflammasome is precisely controlled to avoid excessive activation. Although multiple molecules regulating NLRP3 inflammasome activation have been revealed, the checkpoints governing NLRP3 inflammasome activation remain elusive. Here, we show that activation of NLRP3 inflammasome is governed by GSTO1-promoted ASC deglutathionylation in macrophages. Glutathionylation of ASC inhibits ASC oligomerization and thus represses activation of NLRP3 inflammasome in macrophages, unless GSTO1 binds ASC and deglutathionylates ASC at ER, under control of mitochondrial ROS and triacylglyceride synthesis. In macrophages expressing ASCC171A, a mutant ASC without glutathionylation site, activation of NLRP3 inflammasome is GSTO1 independent, ROS independent, and signal 2 less dependent. Moreover, AscC171A mice exhibit NLRP3-dependent hyperinflammation in vivo. Our results demonstrate that glutathionylation of ASC represses NLRP3 inflammasome activation, and GSTO1-promoted ASC deglutathionylation at ER, under metabolic control, is a checkpoint for activating NLRP3 inflammasome.
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Affiliation(s)
- Shuhang Li
- Department of Oncology of the First Affiliated Hospital, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Linlin Wang
- Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Zhihao Xu
- Hefei National Laboratory for Physical Sciences at Microscale, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Yuanyuan Huang
- Department of Oncology of the First Affiliated Hospital, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Rufeng Xue
- Department of Obstetrics and Gynecology, the First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Ting Yue
- School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Linfeng Xu
- School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Fanwu Gong
- Hefei National Laboratory for Physical Sciences at Microscale, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Shiyu Bai
- Department of Oncology of the First Affiliated Hospital, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Qielan Wu
- Department of Oncology of the First Affiliated Hospital, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Jiwei Liu
- Department of Oncology of the First Affiliated Hospital, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Bolong Lin
- Hefei National Laboratory for Physical Sciences at Microscale, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Huimin Zhang
- Department of Oncology of the First Affiliated Hospital, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Yanhong Xue
- Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Pingyong Xu
- Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Junjie Hou
- Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Xiaofei Yang
- College of Biomedical Engineering, South-Central University for Nationalities, Wuhan, China
| | - Tengchuan Jin
- Department of Oncology of the First Affiliated Hospital, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Rongbin Zhou
- Department of Oncology of the First Affiliated Hospital, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Jizhong Lou
- Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Tao Xu
- Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Li Bai
- Department of Oncology of the First Affiliated Hospital, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
- Hefei National Laboratory for Physical Sciences at Microscale, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
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