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Authors: Funke, Sebastian
Beutgen, Vanessa M.
Bechter, Lea
Schmelter, Carsten
Zurawski, Vanessa
Perumal, Natarajan
Pfeiffer, Norbert
Grus, Franz-Hermann
Title: An in-depth view of the porcine trabecular meshwork proteome
Online publication date: 27-Jan-2020
Language: english
Abstract: The house swine (Sus scrofa domestica Linnaeus 1758) is an important model organism regarding the study of neurodegenerative diseases, especially ocular neuropathies such as glaucoma. This is due to the high comparability of the porcine and human eye regarding anatomy and molecular features. In the pathogenesis of glaucoma, the trabecular meshwork (TM) forms a key ocular component in terms of intraocular pressure (IOP) elevation. Thereby, functional TM abnormalities are correlated with distinct proteomic alterations. However, a detailed analysis of the TM proteome has not been realized so far. Since the porcine eye has high potential as a model system to study ocular diseases such as glaucoma, the present study focuses on the in-depth analysis of the porcine TM proteome. By use of a bottom-up (BU) mass spectrometric (MS) platform utilizing electrospray ionization liquid chromatography tandem MS (LC-ESI-MS/MS) considering database-dependent and peptide de novo sequencing, more than 3000 TM proteins were documented with high confidence (FDR < 1%). A distinct number of proteins with neuronal association were revealed. To the best to our knowledge, many of these protein species have not been reported for TM tissue before such as reelin, centlein and high abundant neuroblast differentiation-associated protein AHNAK (AHNAK). Thereby, AHNAK might play a superordinate role in the TM regarding proposed tissue involvement in barrier function. Also, a high number of secretory proteins could be identified. The generated TM proteomic landscape underlines a multifunctional character of the TM beyond representing a simple drainage system. Finally, the protein catalogue of the porcine TM provides an in-depth view of the TM molecular landscape and will serve as an important reference map in terms of glaucoma research utilizing porcine animal models, porcine TM tissues and/or cultured TM cells.
DDC: 610 Medizin
610 Medical sciences
Institution: Johannes Gutenberg-Universität Mainz
Department: FB 04 Medizin
Place: Mainz
URN: urn:nbn:de:hebis:77-publ-595234
Version: Published version
Publication type: Zeitschriftenaufsatz
License: CC BY
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Journal: International journal of molecular sciences
Pages or article number: Art. 2526
Publisher: Molecular Diversity Preservation International
Publisher place: Basel
Issue date: 2019
ISSN: 1422-0067
Publisher URL:
Publisher DOI: 10.3390/ijms20102526
Appears in collections:JGU-Publikationen

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