1
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Zappa F, Intartaglia D, Guarino AM, De Cegli R, Wilson C, Salierno FG, Polishchuk E, Sorrentino NC, Conte I, De Matteis MA. Role of trafficking protein particle complex 2 in medaka development. Traffic 2024; 25:e12924. [PMID: 37963679 DOI: 10.1111/tra.12924] [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: 08/07/2023] [Revised: 10/16/2023] [Accepted: 10/27/2023] [Indexed: 11/16/2023]
Abstract
The skeletal dysplasia spondyloepiphyseal dysplasia tarda (SEDT) is caused by mutations in the TRAPPC2 gene, which encodes Sedlin, a component of the trafficking protein particle (TRAPP) complex that we have shown previously to be required for the export of type II collagen (Col2) from the endoplasmic reticulum. No vertebrate model for SEDT has been generated thus far. To address this gap, we generated a Sedlin knockout animal by mutating the orthologous TRAPPC2 gene (olSedl) of Oryzias latipes (medaka) fish. OlSedl deficiency leads to embryonic defects, short size, diminished skeletal ossification and altered Col2 production and secretion, resembling human defects observed in SEDT patients. Moreover, SEDT knock-out animals display photoreceptor degeneration and gut morphogenesis defects, suggesting a key role for Sedlin in the development of these organs. Thus, by studying Sedlin function in vivo, we provide evidence for a mechanistic link between TRAPPC2-mediated membrane trafficking, Col2 export, and developmental disorders.
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Affiliation(s)
- Francesca Zappa
- Telethon Institute of Genetics and Medicine, TIGEM, Pozzuoli (Naples), Italy
| | - Daniela Intartaglia
- Telethon Institute of Genetics and Medicine, TIGEM, Pozzuoli (Naples), Italy
| | - Andrea M Guarino
- Telethon Institute of Genetics and Medicine, TIGEM, Pozzuoli (Naples), Italy
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, Naples, Italy
| | - Rossella De Cegli
- Telethon Institute of Genetics and Medicine, TIGEM, Pozzuoli (Naples), Italy
| | - Cathal Wilson
- Telethon Institute of Genetics and Medicine, TIGEM, Pozzuoli (Naples), Italy
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, Naples, Italy
| | | | - Elena Polishchuk
- Telethon Institute of Genetics and Medicine, TIGEM, Pozzuoli (Naples), Italy
| | - Nicolina Cristina Sorrentino
- Telethon Institute of Genetics and Medicine, TIGEM, Pozzuoli (Naples), Italy
- Department of Clinical Medicine and Surgery, University of Naples Federico II, Naples, Italy
| | - Ivan Conte
- Telethon Institute of Genetics and Medicine, TIGEM, Pozzuoli (Naples), Italy
- Department of Biology, University of Naples Federico II, Naples, Italy
| | - Maria Antonietta De Matteis
- Telethon Institute of Genetics and Medicine, TIGEM, Pozzuoli (Naples), Italy
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, Naples, Italy
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2
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Intartaglia D, Giamundo G, Naso F, Nusco E, Di Giulio S, Salierno FG, Polishchuk E, Conte I. Induction of Autophagy Promotes Clearance of RHOP23H Aggregates and Protects From Retinal Degeneration. Front Aging Neurosci 2022; 14:878958. [PMID: 35847673 PMCID: PMC9281868 DOI: 10.3389/fnagi.2022.878958] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Accepted: 05/19/2022] [Indexed: 12/16/2022] Open
Abstract
Autophagy is a critical metabolic process that acts as a major self-digestion and recycling pathway contributing to maintain cellular homeostasis. An emerging field of research supports the therapeutic modulation of autophagy for treating human neurodegenerative disorders, in which toxic aggregates are accumulated in neurons. Our previous study identified Ezrin protein as an inhibitor of autophagy and lysosomal functions in the retina; thus, in turn, identifying it as a potential pharmacological target for increasing retinal cell clearance to treat inherited retinal dystrophies in which misfolded proteins have accumulated. This study aimed to verify the therapeutic inhibition of Ezrin to induce clearance of toxic aggregates in a mouse model for a dominant form of retinitis pigmentosa (i.e., RHOP23H/+). We found that daily inhibition of Ezrin significantly decreased the accumulation of misfolded RHOP23H aggregates. Remarkably, induction of autophagy, by a drug-mediated pulsatile inhibition of Ezrin, promoted the lysosomal clearance of disease-linked RHOP23H aggregates. This was accompanied with a reduction of endoplasmic reticulum (ER)-stress, robust decrease of photoreceptors' cell death, amelioration in both retinal morphology and function culminating in a better preservation of vision. Our study opens new perspectives for a pulsatile pharmacological induction of autophagy as a mutation-independent therapy paving the way toward a more effective therapeutic strategy to treat these devastating retinal disorders due to an accumulation of intracellular toxic aggregates.
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Affiliation(s)
| | - Giuliana Giamundo
- Telethon Institute of Genetics and Medicine, Pozzuoli, Italy
- Department of Biology, University of Naples Federico II, Naples, Italy
| | - Federica Naso
- Telethon Institute of Genetics and Medicine, Pozzuoli, Italy
| | - Edoardo Nusco
- Telethon Institute of Genetics and Medicine, Pozzuoli, Italy
| | | | | | | | - Ivan Conte
- Telethon Institute of Genetics and Medicine, Pozzuoli, Italy
- Department of Biology, University of Naples Federico II, Naples, Italy
- *Correspondence: Ivan Conte
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3
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Cinque L, De Leonibus C, Iavazzo M, Krahmer N, Intartaglia D, Salierno FG, De Cegli R, Di Malta C, Svelto M, Lanzara C, Maddaluno M, Wanderlingh LG, Huebner AK, Cesana M, Bonn F, Polishchuk E, Hübner CA, Conte I, Dikic I, Mann M, Ballabio A, Sacco F, Grumati P, Settembre C. MiT/TFE factors control ER-phagy via transcriptional regulation of FAM134B. EMBO J 2020; 39:e105696. [PMID: 32716134 PMCID: PMC7459426 DOI: 10.15252/embj.2020105696] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 06/11/2020] [Accepted: 06/18/2020] [Indexed: 01/08/2023] Open
Abstract
Lysosomal degradation of the endoplasmic reticulum (ER) via autophagy (ER-phagy) is emerging as a critical regulator of cell homeostasis and function. The recent identification of ER-phagy receptors has shed light on the molecular mechanisms underlining this process. However, the signaling pathways regulating ER-phagy in response to cellular needs are still largely unknown. We found that the nutrient responsive transcription factors TFEB and TFE3-master regulators of lysosomal biogenesis and autophagy-control ER-phagy by inducing the expression of the ER-phagy receptor FAM134B. The TFEB/TFE3-FAM134B axis promotes ER-phagy activation upon prolonged starvation. In addition, this pathway is activated in chondrocytes by FGF signaling, a critical regulator of skeletal growth. FGF signaling induces JNK-dependent proteasomal degradation of the insulin receptor substrate 1 (IRS1), which in turn inhibits the PI3K-PKB/Akt-mTORC1 pathway and promotes TFEB/TFE3 nuclear translocation and enhances FAM134B transcription. Notably, FAM134B is required for protein secretion in chondrocytes, and cartilage growth and bone mineralization in medaka fish. This study identifies a new signaling pathway that allows ER-phagy to respond to both metabolic and developmental cues.
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Affiliation(s)
- Laura Cinque
- Telethon Institute of Genetics and Medicine (TIGEM), Pozzuoli, Italy
| | | | - Maria Iavazzo
- Telethon Institute of Genetics and Medicine (TIGEM), Pozzuoli, Italy
| | - Natalie Krahmer
- Institute for Diabetes and Obesity, Helmholtz Zentrum München, Munich-Neuherberg, Germany.,Department of Proteomics and Signal Transduction, Max Planck Institute of Biochemistry, Martinsried, Germany
| | | | | | - Rossella De Cegli
- Telethon Institute of Genetics and Medicine (TIGEM), Pozzuoli, Italy
| | - Chiara Di Malta
- Telethon Institute of Genetics and Medicine (TIGEM), Pozzuoli, Italy
| | - Maria Svelto
- Telethon Institute of Genetics and Medicine (TIGEM), Pozzuoli, Italy
| | - Carmela Lanzara
- Telethon Institute of Genetics and Medicine (TIGEM), Pozzuoli, Italy
| | | | | | - Antje K Huebner
- Institute of Human Genetics, Jena University Hospital, Friedrich-Schiller-University Jena, Jena, Germany
| | - Marcella Cesana
- Telethon Institute of Genetics and Medicine (TIGEM), Pozzuoli, Italy.,Department of Advanced Biomedical Sciences, University of Naples "Federico II", Naples, Italy
| | - Florian Bonn
- Institute of Biochemistry II, Goethe University Frankfurt - Medical Faculty, University Hospital, Frankfurt am Main, Germany
| | - Elena Polishchuk
- Telethon Institute of Genetics and Medicine (TIGEM), Pozzuoli, Italy
| | - Christian A Hübner
- Institute of Human Genetics, Jena University Hospital, Friedrich-Schiller-University Jena, Jena, Germany
| | - Ivan Conte
- Telethon Institute of Genetics and Medicine (TIGEM), Pozzuoli, Italy.,Department of Biology, University of Naples "Federico II", Naples, Italy
| | - Ivan Dikic
- Institute of Human Genetics, Jena University Hospital, Friedrich-Schiller-University Jena, Jena, Germany.,Buchmann Institute for Molecular Life Sciences, Goethe University, Frankfurt, Frankfurt am Main, Germany
| | - Matthias Mann
- Department of Proteomics and Signal Transduction, Max Planck Institute of Biochemistry, Martinsried, Germany.,Faculty of Health Sciences, NNF Center for Protein Research, University of Copenhagen, Copenhagen, Denmark
| | - Andrea Ballabio
- Telethon Institute of Genetics and Medicine (TIGEM), Pozzuoli, Italy.,Department of Translational Medicine, Federico II University, Naples, Italy.,Jan and Dan Duncan Neurological Research Institute, Texas Children Hospital, Houston, TX, USA.,Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Francesca Sacco
- Department of Biology, University of Rome "Tor Vergata", Rome, Italy
| | - Paolo Grumati
- Telethon Institute of Genetics and Medicine (TIGEM), Pozzuoli, Italy
| | - Carmine Settembre
- Telethon Institute of Genetics and Medicine (TIGEM), Pozzuoli, Italy.,Department of Translational Medicine, Federico II University, Naples, Italy
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4
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Naso F, Intartaglia D, Falanga D, Soldati C, Polishchuk E, Giamundo G, Tiberi P, Marrocco E, Scudieri P, Di Malta C, Trapani I, Nusco E, Salierno FG, Surace EM, Galietta LJ, Banfi S, Auricchio A, Ballabio A, Medina DL, Conte I. Light-responsive microRNA miR-211 targets Ezrin to modulate lysosomal biogenesis and retinal cell clearance. EMBO J 2020; 39:e102468. [PMID: 32154600 DOI: 10.15252/embj.2019102468] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 02/03/2020] [Accepted: 02/05/2020] [Indexed: 12/16/2022] Open
Abstract
Vertebrate vision relies on the daily phagocytosis and lysosomal degradation of photoreceptor outer segments (POS) within the retinal pigment epithelium (RPE). However, how these events are controlled by light is largely unknown. Here, we show that the light-responsive miR-211 controls lysosomal biogenesis at the beginning of light-dark transitions in the RPE by targeting Ezrin, a cytoskeleton-associated protein essential for the regulation of calcium homeostasis. miR-211-mediated down-regulation of Ezrin leads to Ca2+ influx resulting in the activation of calcineurin, which in turn activates TFEB, the master regulator of lysosomal biogenesis. Light-mediated induction of lysosomal biogenesis and function is impaired in the RPE from miR-211-/- mice that show severely compromised vision. Pharmacological restoration of lysosomal biogenesis through Ezrin inhibition rescued the miR-211-/- phenotype, pointing to a new therapeutic target to counteract retinal degeneration associated with lysosomal dysfunction.
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Affiliation(s)
- Federica Naso
- Telethon Institute of Genetics and Medicine, Pozzuoli (Naples), Italy
| | | | - Danila Falanga
- Telethon Institute of Genetics and Medicine, Pozzuoli (Naples), Italy
| | - Chiara Soldati
- Telethon Institute of Genetics and Medicine, Pozzuoli (Naples), Italy
| | - Elena Polishchuk
- Telethon Institute of Genetics and Medicine, Pozzuoli (Naples), Italy
| | - Giuliana Giamundo
- Telethon Institute of Genetics and Medicine, Pozzuoli (Naples), Italy
| | - Paola Tiberi
- Telethon Institute of Genetics and Medicine, Pozzuoli (Naples), Italy
| | - Elena Marrocco
- Telethon Institute of Genetics and Medicine, Pozzuoli (Naples), Italy
| | - Paolo Scudieri
- Telethon Institute of Genetics and Medicine, Pozzuoli (Naples), Italy
| | - Chiara Di Malta
- Telethon Institute of Genetics and Medicine, Pozzuoli (Naples), Italy
| | - Ivana Trapani
- Telethon Institute of Genetics and Medicine, Pozzuoli (Naples), Italy
| | - Edoardo Nusco
- Telethon Institute of Genetics and Medicine, Pozzuoli (Naples), Italy
| | | | - Enrico Maria Surace
- Telethon Institute of Genetics and Medicine, Pozzuoli (Naples), Italy.,Department of Translational Medicine, University of Naples Federico II, Naples, Italy
| | - Luis Jv Galietta
- Telethon Institute of Genetics and Medicine, Pozzuoli (Naples), Italy.,Department of Translational Medicine, University of Naples Federico II, Naples, Italy
| | - Sandro Banfi
- Telethon Institute of Genetics and Medicine, Pozzuoli (Naples), Italy.,Medical Genetics, Department of Biochemistry, Biophysics and General Pathology, University of Campania "L. Vanvitelli", Naples, Italy
| | - Alberto Auricchio
- Telethon Institute of Genetics and Medicine, Pozzuoli (Naples), Italy.,Department of Translational Medicine, University of Naples Federico II, Naples, Italy
| | - Andrea Ballabio
- Telethon Institute of Genetics and Medicine, Pozzuoli (Naples), Italy.,Department of Translational Medicine, University of Naples Federico II, Naples, Italy.,Jan and Dan Duncan Neurological Research Institute, Texas Children Hospital, Houston, TX, USA.,Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Diego Luis Medina
- Telethon Institute of Genetics and Medicine, Pozzuoli (Naples), Italy
| | - Ivan Conte
- Telethon Institute of Genetics and Medicine, Pozzuoli (Naples), Italy.,Department of Biology, University of Naples Federico II, Naples, Italy
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5
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Intartaglia D, Giamundo G, Marrocco E, Maffia V, Salierno FG, Nusco E, Fraldi A, Conte I, Sorrentino NC. Retinal Degeneration in MPS-IIIA Mouse Model. Front Cell Dev Biol 2020; 8:132. [PMID: 32195255 PMCID: PMC7064560 DOI: 10.3389/fcell.2020.00132] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Accepted: 02/14/2020] [Indexed: 12/21/2022] Open
Abstract
Mucopolysaccharidosis type IIIA (MPS-IIIA, Sanfilippo A) is one of the most severe lysosomal storage disorder (LSD) caused by the inherited deficiency of sulfamidase, a lysosomal sulfatase enzyme involved in the stepwise degradation of heparan sulfates (HS). MPS-IIIA patients show multisystemic problems, including a strong impairment of central nervous system (CNS), mild somatic involvement, and ocular manifestations that result in significant visual impairment. Despite the CNS and somatic pathology have been well characterized, studies on visual system and function remain partially explored. Here, we characterized the retina morphology and functionality in MPS-IIIA mouse model and analyzed how the SGSH deficiency affects the autophagic flux. MPS-IIIA mice exhibited a progressive retinal dystrophy characterized by significant alterations in visual function. The photoreceptor degeneration was associated with HS accumulation and a block of autophagy pathway. These events caused a reactive microgliosis, and a development of apoptotic processes in MPS-IIIA mouse retina. Overall, this study provides the first phenotypic spectrum of retinal disorders in MPS-IIIA and significantly contributes for diagnosis, counseling, and potential therapies development.
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Affiliation(s)
| | | | - Elena Marrocco
- Telethon Institute of Genetics and Medicine, Pozzuoli, Italy
| | - Veronica Maffia
- Telethon Institute of Genetics and Medicine, Pozzuoli, Italy
| | | | - Edoardo Nusco
- Telethon Institute of Genetics and Medicine, Pozzuoli, Italy
| | - Alessandro Fraldi
- Telethon Institute of Genetics and Medicine, Pozzuoli, Italy.,Department of Translational Medicine, University of Naples Federico II, Naples, Italy
| | - Ivan Conte
- Telethon Institute of Genetics and Medicine, Pozzuoli, Italy.,Department of Biology, University of Naples Federico II, Naples, Italy
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6
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Carrella S, Barbato S, D’Agostino Y, Salierno FG, Manfredi A, Banfi S, Conte I. TGF-β Controls miR-181/ERK Regulatory Network during Retinal Axon Specification and Growth. PLoS One 2015; 10:e0144129. [PMID: 26641497 PMCID: PMC4671616 DOI: 10.1371/journal.pone.0144129] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [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: 07/24/2015] [Accepted: 11/14/2015] [Indexed: 12/03/2022] Open
Abstract
Retinal axon specification and growth are critically sensitive to the dosage of numerous signaling molecules and transcription factors. Subtle variations in the expression levels of key molecules may result in a variety of axonal growth anomalies. miR-181a and miR-181b are two eye-enriched microRNAs whose inactivation in medaka fish leads to alterations of the proper establishment of connectivity and function in the visual system. miR-181a/b are fundamental regulators of MAPK signaling and their role in retinal axon growth and specification is just beginning to be elucidated. Here we demonstrate that miR-181a/b are key nodes in the interplay between TGF-β and MAPK/ERK within the functional pathways that control retinal axon specification and growth. Using a variety of in vivo and in vitro approaches in medaka fish, we demonstrate that TGF-β signaling controls the miR-181/ERK regulatory network, which in turn strengthens the TGF-β-mediated regulation of RhoA degradation. Significantly, these data uncover the role of TGF-β signaling in vivo, for the first time, in defining the correct wiring and assembly of functional retina neural circuits and further highlight miR-181a/b as key factors in axon specification and growth.
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Affiliation(s)
- Sabrina Carrella
- Telethon Institute of Genetics and Medicine, Via Campi Flegrei 34, Pozzuoli (Naples), 80078, Italy
| | - Sara Barbato
- Telethon Institute of Genetics and Medicine, Via Campi Flegrei 34, Pozzuoli (Naples), 80078, Italy
| | - Ylenia D’Agostino
- Telethon Institute of Genetics and Medicine, Via Campi Flegrei 34, Pozzuoli (Naples), 80078, Italy
| | | | - Anna Manfredi
- Telethon Institute of Genetics and Medicine, Via Campi Flegrei 34, Pozzuoli (Naples), 80078, Italy
| | - Sandro Banfi
- Telethon Institute of Genetics and Medicine, Via Campi Flegrei 34, Pozzuoli (Naples), 80078, Italy
- Medical Genetics, Dipartimento di Biochimica, Biofisica e Patologia Generale, Second University of Naples, via Luigi De Crecchio 7, 80138, Naples, Italy
- * E-mail: (SB); (IC)
| | - Ivan Conte
- Telethon Institute of Genetics and Medicine, Via Campi Flegrei 34, Pozzuoli (Naples), 80078, Italy
- * E-mail: (SB); (IC)
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7
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Avellino R, Carrella S, Pirozzi M, Risolino M, Salierno FG, Franco P, Stoppelli P, Verde P, Banfi S, Conte I. miR-204 targeting of Ankrd13A controls both mesenchymal neural crest and lens cell migration. PLoS One 2013; 8:e61099. [PMID: 23620728 PMCID: PMC3631221 DOI: 10.1371/journal.pone.0061099] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [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: 10/15/2012] [Accepted: 03/05/2013] [Indexed: 12/20/2022] Open
Abstract
Loss of cell adhesion and enhancement of cell motility contribute to epithelial-to-mesenchymal transition during development. These processes are related to a) rearrangement of cell-cell and cell-substrate adhesion molecules; b) cross talk between extra-cellular matrix and internal cytoskeleton through focal adhesion molecules. Focal adhesions are stringently regulated transient structures implicated in cell adhesion, spreading and motility during tissue development. Importantly, despite the extensive elucidation of the molecular composition of focal adhesions, the complex regulation of their dynamics is largely unclear. Here, we demonstrate, using live-imaging in medaka, that the microRNA miR-204 promotes both mesenchymal neural crest and lens cell migration and elongation. Overexpression of miR-204 results in upregulated cell motility, while morpholino-mediated ablation of miR-204 activity causes abnormal lens morphogenesis and neural crest cell mislocalization. Using a variety of in vivo and in vitro approaches, we demonstrate that these actions are mediated by the direct targeting of the Ankrd13A gene, which in turn controls focal cell adhesion formation and distribution. Significantly, in vivo restoration of abnormally elevated levels of Ankrd13A resulting from miR-204 inactivation rescued the aberrant lens phenotype in medaka fish. These data uncover, for the first time in vivo, the role of a microRNA in developmental control of mesenchymal cell migration and highlight miR-204 as a "master regulator" of the molecular networks that regulate lens morphogenesis in vertebrates.
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Affiliation(s)
| | | | | | | | | | - Paola Franco
- Institute of Genetics and Biophysics, Naples, Italy
| | | | | | - Sandro Banfi
- Telethon Institute of Genetics and Medicine, Naples, Italy
- Medical Genetics, Department of Biochemistry, Biophysics and General Pathology, Second University of Naples, Naples, Italy
| | - Ivan Conte
- Telethon Institute of Genetics and Medicine, Naples, Italy
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