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Nonomura Y, Sawamura S, Hanzawa K, Nishikaze T, Sekiya S, Higuchi T, Nin F, Uetsuka S, Inohara H, Okuda S, Miyoshi E, Horii A, Takahashi S, Natsuka S, Hibino H. Characterisation of N-glycans in the epithelial-like tissue of the rat cochlea. Sci Rep 2019; 9:1551. [PMID: 30733536 PMCID: PMC6367448 DOI: 10.1038/s41598-018-38079-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Accepted: 12/17/2018] [Indexed: 01/08/2023] Open
Abstract
Membrane proteins (such as ion channels, transporters, and receptors) and secreted proteins are essential for cellular activities. N-linked glycosylation is involved in stability and function of these proteins and occurs at Asn residues. In several organs, profiles of N-glycans have been determined by comprehensive analyses. Nevertheless, the cochlea of the mammalian inner ear, a tiny organ mediating hearing, has yet to be examined. Here, we focused on the stria vascularis, an epithelial-like tissue in the cochlea, and characterised N-glycans by liquid chromatography with mass spectrometry. This hypervascular tissue not only expresses several ion transporters and channels to control the electrochemical balance in the cochlea but also harbours different transporters and receptors that maintain structure and activity of the organ. Seventy-nine N-linked glycans were identified in the rat stria vascularis. Among these, in 55 glycans, the complete structures were determined; in the other 24 species, partial glycosidic linkage patterns and full profiles of the monosaccharide composition were identified. In the process of characterisation, several sialylated glycans were subjected sequentially to two different alkylamidation reactions; this derivatisation helped to distinguish α2,3-linkage and α2,6-linkage sialyl isomers with mass spectrometry. These data should accelerate elucidation of the molecular architecture of the cochlea.
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Affiliation(s)
- Yoriko Nonomura
- Department of Molecular Physiology, Niigata University School of Medicine, Niigata, Japan
- Department of Otorhinolaryngology-Head and Neck Surgery, Niigata University School of Medicine, Niigata, Japan
| | - Seishiro Sawamura
- Department of Molecular Physiology, Niigata University School of Medicine, Niigata, Japan
| | - Ken Hanzawa
- Department of Biology, Faculty of Science, Niigata University, Niigata, Japan
| | - Takashi Nishikaze
- Koichi Tanaka Mass Spectrometry Research Laboratory, Shimadzu Corporation, Kyoto, Japan
| | - Sadanori Sekiya
- Koichi Tanaka Mass Spectrometry Research Laboratory, Shimadzu Corporation, Kyoto, Japan
| | - Taiga Higuchi
- Department of Molecular Physiology, Niigata University School of Medicine, Niigata, Japan
| | - Fumiaki Nin
- Department of Molecular Physiology, Niigata University School of Medicine, Niigata, Japan
- Center for Transdisciplinary Research, Niigata University, Niigata, Japan
| | - Satoru Uetsuka
- Department of Otorhinolaryngology-Head and Neck Surgery, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Hidenori Inohara
- Department of Otorhinolaryngology-Head and Neck Surgery, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Shujiro Okuda
- Bioinformatics Laboratory, Niigata University School of Medicine, Niigata, Japan
| | - Eiji Miyoshi
- Division of Health Sciences, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Arata Horii
- Department of Otorhinolaryngology-Head and Neck Surgery, Niigata University School of Medicine, Niigata, Japan
| | - Sugata Takahashi
- Department of Otorhinolaryngology-Head and Neck Surgery, Niigata University School of Medicine, Niigata, Japan
| | - Shunji Natsuka
- Department of Biology, Faculty of Science, Niigata University, Niigata, Japan
| | - Hiroshi Hibino
- Department of Molecular Physiology, Niigata University School of Medicine, Niigata, Japan.
- Center for Transdisciplinary Research, Niigata University, Niigata, Japan.
- AMED-CREST, AMED, Niigata, Japan.
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Gangliosides and hearing. Biochim Biophys Acta Gen Subj 2017; 1861:2485-2493. [PMID: 28571946 DOI: 10.1016/j.bbagen.2017.05.025] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Revised: 05/25/2017] [Accepted: 05/25/2017] [Indexed: 01/12/2023]
Abstract
Severe auditory impairment observed in GM3 synthase-deficient mice and humans indicates that glycosphingolipids, especially sialic-acid containing gangliosides, are indispensable for hearing. Gangliosides associate with glycoproteins to form membrane microdomains, the composition of which plays a special role in maintaining the structural and functional integrity of hair cells. These microdomains, also called lipid rafts, connect with intracellular signaling and cytoskeletal systems to link cellular responses to environmental cues. During development, ganglioside species are expressed in distinctive spatial and temporal patterns throughout the cochlea. In both mice and humans, blocking particular steps of ganglioside metabolism produces distinctive neurological and auditory phenotypes. Thus each ganglioside species may have specific, non-overlapping functions within the cochlea, central auditory network, and brain.
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Inokuchi JI. Physiopathological function of hematoside (GM3 ganglioside). PROCEEDINGS OF THE JAPAN ACADEMY. SERIES B, PHYSICAL AND BIOLOGICAL SCIENCES 2011; 87:179-98. [PMID: 21558756 PMCID: PMC3149380 DOI: 10.2183/pjab.87.179] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Since I was involved in the molecular cloning of GM3 synthase (SAT-I), which is the primary enzyme for the biosynthesis of gangliosides in 1998, my research group has been concentrating on our efforts to explore the physiological and pathological implications of gangliosides especially for GM3. During the course of study, we demonstrated the molecular pathogenesis of type 2 diabetes and insulin resistance focusing on the interaction between insulin receptor and gangliosides in membrane microdomains and propose a new concept: Life style-related diseases, such as type 2 diabetes, are a membrane microdomain disorder caused by aberrant expression of gangliosides. We also encountered an another interesting aspect indicating the indispensable role of gangliosides in auditory system. After careful behavioral examinations of SAT-I knockout mice, their hearing ability was seriously impaired with selective degeneration of the stereocilia of hair cells in the organ of Corti. This is the first observation demonstrating a direct link between gangliosides and hearing functions.
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Affiliation(s)
- Jin-ichi Inokuchi
- Division of Glycopathology, Institute of Molecular Biomembranes and Glycobiology, Tohoku Pharmaceutical University, Miyagi, Japan.
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Revoltella RP, Papini S, Rosellini A, Michelini M, Franceschini V, Ciorba A, Bertolaso L, Magosso S, Hatzopoulos S, Lorito G, Giordano P, Simoni E, Ognio E, Cilli M, Saccardi R, Urbani S, Jeffery R, Poulsom R, Martini A. Cochlear Repair by Transplantation of Human Cord Blood CD133+ Cells to Nod-Scid Mice Made Deaf with Kanamycin and Noise. Cell Transplant 2008; 17:665-78. [DOI: 10.3727/096368908786092685] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
We investigated the fate of human cord blood CD133+ hematopoietic stem cells (HSC) transplanted intravenously (IV) into irradiated nodscid mice previously made deaf by ototoxic treatment with kanamycin and/or intense noise, to verify whether HSC engraft the cochlea and contribute to inner ear restoration, in vivo. We tested the presence of HLA.DQα1 by PCR, used for traceability of engrafted cells, finding evidence that HSC migrated to various host tissues, including the organ of Corti (OC). By histology, antibody and lectin-staining analysis, we confirmed that HSC IV transplantation in mice previously damaged by ototoxic agents correlated with the repair process and stimulation ex novo of morphological recovery in the inner ear, while the cochlea of control oto-injured, nontransplanted mice remained seriously damaged. Dual color FISH analysis also provided evidence of positive engraftment in the inner ear and in various mouse tissues, also revealing small numbers of heterokaryons, probably derived from fusion of donor with endogenous cells, for up to 2 months following transplantation. These observations offer the first evidence that transplanted human HSC migrating to the inner ear of oto-injured mice may provide conditions for the resumption of deafened cochlea, emerging as a potential strategy for inner ear rehabilitation.
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Affiliation(s)
- Roberto P. Revoltella
- Foundation onlus “Staminali e Vita”, Institute of Biomedical Technologies, C.N.R., 56127 Pisa, Italy
| | - Sandra Papini
- Foundation onlus “Staminali e Vita”, Institute of Biomedical Technologies, C.N.R., 56127 Pisa, Italy
| | - Alfredo Rosellini
- Foundation onlus “Staminali e Vita”, Institute of Biomedical Technologies, C.N.R., 56127 Pisa, Italy
| | - Monica Michelini
- Foundation onlus “Staminali e Vita”, Institute of Biomedical Technologies, C.N.R., 56127 Pisa, Italy
| | - Valeria Franceschini
- Department of Evolution and Experimental Biology, University of Bologna, 40126 Bologna, Italy
| | - Andrea Ciorba
- Audiology Unit, Bioacoustic Center and National Institute of Neuroscience, University Hospital S. Anna, University of Ferrara, 44100 Ferrara, Italy
| | - Lucia Bertolaso
- Audiology Unit, Bioacoustic Center and National Institute of Neuroscience, University Hospital S. Anna, University of Ferrara, 44100 Ferrara, Italy
| | - Sara Magosso
- Audiology Unit, Bioacoustic Center and National Institute of Neuroscience, University Hospital S. Anna, University of Ferrara, 44100 Ferrara, Italy
| | - Stavros Hatzopoulos
- Audiology Unit, Bioacoustic Center and National Institute of Neuroscience, University Hospital S. Anna, University of Ferrara, 44100 Ferrara, Italy
| | - Guiscardo Lorito
- Audiology Unit, Bioacoustic Center and National Institute of Neuroscience, University Hospital S. Anna, University of Ferrara, 44100 Ferrara, Italy
| | - Pietro Giordano
- Audiology Unit, Bioacoustic Center and National Institute of Neuroscience, University Hospital S. Anna, University of Ferrara, 44100 Ferrara, Italy
| | - Edi Simoni
- Audiology Unit, Bioacoustic Center and National Institute of Neuroscience, University Hospital S. Anna, University of Ferrara, 44100 Ferrara, Italy
| | - Emanuela Ognio
- Animal Model Facility, National Institute for Cancer Research (IST), 16132 Genua, Italy
| | - Michele Cilli
- Animal Model Facility, National Institute for Cancer Research (IST), 16132 Genua, Italy
| | - Riccardo Saccardi
- Bone Marrow Transplantation Center, Department of Haematology, University Hospital, 50134 Florence, Italy
| | - Serena Urbani
- Bone Marrow Transplantation Center, Department of Haematology, University Hospital, 50134 Florence, Italy
| | - Rosemary Jeffery
- Histopathology Unit, Cancer Research UK, London Research Institute, London WC2A 3PX, UK
| | - Richard Poulsom
- Histopathology Unit, Cancer Research UK, London Research Institute, London WC2A 3PX, UK
| | - Alessandro Martini
- Histopathology Unit, Cancer Research UK, London Research Institute, London WC2A 3PX, UK
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Talaei-Khozani T, Monsefi M, Vojdani Z, Dehghani F. Histochemical Study of the Effects of Noise on the Cell Surface and Extracellular Matrix Glycoconjugates of the Developing Mouse Cochlea. JOURNAL OF APPLIED ANIMAL RESEARCH 2007. [DOI: 10.1080/09712119.2007.9706666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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Michelini M, Franceschini V, Sihui Chen S, Papini S, Rosellini A, Ciani F, Margolis L, Revoltella RP. Primate embryonic stem cells create their own niche while differentiating in three-dimensional culture systems. Cell Prolif 2006; 39:217-29. [PMID: 16671999 PMCID: PMC6496701 DOI: 10.1111/j.1365-2184.2006.00381.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2005] [Accepted: 01/31/2006] [Indexed: 11/30/2022] Open
Abstract
Rhesus monkey embryonic stem cells (ESCs) (R366.4), cultured on a three-dimensional (3D) collagen matrix with or without human neonatal foreskin fibroblasts (HPI.1) as feeder cells, or embedded in the collagen matrix, formed complex tubular or spherical gland-like structures and differentiated into phenotypes characteristic of neural, epithelial and endothelial lineages. Here, we analysed the production of endogenous extracellular matrix (ECM) proteins, cell-cell adhesion molecules, cell-surface receptors, lectins and their glycoligands, by differentiating ESCs, forming a micro-environment, a niche, able to positively influence cell behaviour. The expression of some of these molecules was modulated by HPI.1 cells while others were unaffected. We hypothesized that both soluble factors and the niche itself were critical in directing growth and/or differentiation of ESCs in this 3D environment. Creating such an appropriate experimental 3D micro-environment, further modified by ESCs and modulated by exogenous soluble factors, may constitute a template for adequate culture systems in developmental biology studies concerning differentiation of stem cells.
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Affiliation(s)
- M Michelini
- Institute of Biomedical Technologies, CNR, Via G. Moruzzi 1, 56100 Pisa, Italy
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Rueda J, Cantos R, Lim DJ. Distribution of glycoconjugates during cochlea development in mice: light microscopic lectin study. THE ANATOMICAL RECORD. PART A, DISCOVERIES IN MOLECULAR, CELLULAR, AND EVOLUTIONARY BIOLOGY 2003; 274:923-33. [PMID: 12973716 DOI: 10.1002/ar.a.10109] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
During development, different epithelial cells in the mouse cochlea express different cell surface glycoconjugates, which may reflect membrane specialization. Some of the lectins tested in this study (SBA, succ-WGA, and PSA) labeled the sensory cells of the cochlea around birth. Other lectins (WGA, Con A, RCA-II, and PHA-E) labeled surfaces of the sensory cells, particularly the stereocilia, from early stages of development (gestation day (GD) 16) through 21 days after birth. These may be adhesion molecules needed to attach the newly forming tectorial membrane (TM) to the stereocilia. Lectin staining of the developing TM revealed that the substructures of the TM are biochemically distinct. Lectin staining also showed the temporal sequence of the expression of cytoplasmic glycoconjugates of the cochlear epithelium during development. Biochemical changes during development are probably the result of different cells being involved in the production of glycoconjugates, and may have functional significance, specifically with regard to the expression of adhesion and/or signaling molecules.
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Affiliation(s)
- Joaquin Rueda
- Departamento de Histología y Anatomía, Facultad de Medicina, Universidad Miguel Hernández, San Juan de Alicante, Spain.
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