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Grandjean T, Perumal N, Manicam C, Matthey B, Wu T, Thiem DGE, Stein S, Henrich D, Kämmerer PW, Al-Nawas B, Ritz U, Blatt S. Towards optimized tissue regeneration: a new 3D printable bioink of alginate/cellulose hydrogel loaded with thrombocyte concentrate. Front Bioeng Biotechnol 2024; 12:1363380. [PMID: 38595995 PMCID: PMC11002213 DOI: 10.3389/fbioe.2024.1363380] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Accepted: 03/06/2024] [Indexed: 04/11/2024] Open
Abstract
Introduction Autologous platelet concentrate (APC) are pro-angiogenic and can promote wound healing and tissue repair, also in combination with other biomaterials. However, challenging defect situations remain demanding. 3D bioprinting of an APC based bioink encapsulated in a hydrogel could overcome this limitation with enhanced physio-mechanical interface, growth factor retention/secretion and defect-personalized shape to ultimately enhance regeneration. Methods This study used extrusion-based bioprinting to create a novel bioink of alginate/cellulose hydrogel loaded with thrombocyte concentrate. Chemico-physical testing exhibited an amorphous structure characterized by high shape fidelity. Cytotoxicity assay and incubation of human osteogenic sarcoma cells (SaOs2) exposed excellent biocompatibility. enzyme-linked immunosorbent assay analysis confirmed pro-angiogenic growth factor release of the printed constructs, and co-incubation with HUVECS displayed proper cell viability and proliferation. Chorioallantoic membrane (CAM) assay explored the pro-angiogenic potential of the prints in vivo. Detailed proteome and secretome analysis revealed a substantial amount and homologous presence of pro-angiogenic proteins in the 3D construct. Results This study demonstrated a 3D bioprinting approach to fabricate a novel bioink of alginate/cellulose hydrogel loaded with thrombocyte concentrate with high shape fidelity, biocompatibility, and substantial pro-angiogenic properties. Conclusion This approach may be suitable for challenging physiological and anatomical defect situations when translated into clinical use.
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Affiliation(s)
- Till Grandjean
- Department of Orthopedics and Traumatology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Natarajan Perumal
- Department of Ophthalmology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Caroline Manicam
- Department of Ophthalmology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Björn Matthey
- Fraunhofer Institute for Ceramic Technologies and Systems (Fraunhofer IKTS), Dresden, Germany
| | - Tao Wu
- Fraunhofer Institute for Ceramic Technologies and Systems (Fraunhofer IKTS), Dresden, Germany
| | - Daniel G. E. Thiem
- Department of Oral and Maxillofacial Surgery, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Stefan Stein
- Georg-Speyer-Haus, Institute for Tumor Biology and Experimental Therapy, Frankfurt am Main, Germany
| | - Dirk Henrich
- Department of Trauma, Hand and Reconstructive Surgery, University Hospital, Goethe University Frankfurt, Frankfurt am Main, Germany
| | - Peer W. Kämmerer
- Department of Oral and Maxillofacial Surgery, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Bilal Al-Nawas
- Department of Oral and Maxillofacial Surgery, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Ulrike Ritz
- Department of Orthopedics and Traumatology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
- Platform for Biomaterial Research, BiomaTiCS Group, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Sebastian Blatt
- Department of Oral and Maxillofacial Surgery, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
- Platform for Biomaterial Research, BiomaTiCS Group, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
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Perumal N, Yurugi H, Dahm K, Rajalingam K, Grus FH, Pfeiffer N, Manicam C. Proteome landscape and interactome of voltage-gated potassium channel 1.6 (Kv1.6) of the murine ophthalmic artery and neuroretina. Int J Biol Macromol 2024; 257:128464. [PMID: 38043654 DOI: 10.1016/j.ijbiomac.2023.128464] [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: 08/29/2023] [Revised: 11/14/2023] [Accepted: 11/25/2023] [Indexed: 12/05/2023]
Abstract
The voltage-gated potassium channel 1.6 (Kv1.6) plays a vital role in ocular neurovascular beds and exerts its modulatory functions via interaction with other proteins. However, the interactome and their potential roles remain unknown. Here, the global proteome landscape of the ophthalmic artery (OA) and neuroretina was mapped, followed by the determination of Kv1.6 interactome and validation of its functionality and cellular localization. Microfluorimetric analysis of intracellular [K+] and Western blot validated the native functionality and cellular expression of the recombinant Kv1.6 channel protein. A total of 54, 9 and 28 Kv1.6-interacting proteins were identified in the mouse OA and, retina of mouse and rat, respectively. The Kv1.6-protein partners in the OA, namely actin cytoplasmic 2, alpha-2-macroglobulin and apolipoprotein A-I, were implicated in the maintenance of blood vessel integrity by regulating integrin-mediated adhesion to extracellular matrix and Ca2+ flux. Many retinal protein interactors, particularly the ADP/ATP translocase 2 and cytoskeleton protein tubulin, were involved in endoplasmic reticulum stress response and cell viability. Three common interactors were found in all samples comprising heat shock cognate 71 kDa protein, Ig heavy constant gamma 1 and Kv1.6 channel. This foremost in-depth investigation enriched and identified the elusive Kv1.6 channel and, elucidated its complex interactome.
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Affiliation(s)
- Natarajan Perumal
- Department of Ophthalmology, University Medical Centre of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Hajime Yurugi
- Cell Biology Unit, University Medical Centre of the Johannes Gutenberg University Mainz, Germany
| | - Katrin Dahm
- Cell Biology Unit, University Medical Centre of the Johannes Gutenberg University Mainz, Germany
| | - Krishnaraj Rajalingam
- Cell Biology Unit, University Medical Centre of the Johannes Gutenberg University Mainz, Germany
| | - Franz H Grus
- Department of Ophthalmology, University Medical Centre of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Norbert Pfeiffer
- Department of Ophthalmology, University Medical Centre of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Caroline Manicam
- Department of Ophthalmology, University Medical Centre of the Johannes Gutenberg University Mainz, Mainz, Germany.
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Pham TNM, Perumal N, Manicam C, Basoglu M, Eimer S, Fuhrmann DC, Pietrzik CU, Clement AM, Körschgen H, Schepers J, Behl C. Adaptive responses of neuronal cells to chronic endoplasmic reticulum (ER) stress. Redox Biol 2023; 67:102943. [PMID: 37883843 PMCID: PMC10618786 DOI: 10.1016/j.redox.2023.102943] [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: 09/20/2023] [Revised: 10/16/2023] [Accepted: 10/19/2023] [Indexed: 10/28/2023] Open
Abstract
Accumulation of misfolded proteins or perturbation of calcium homeostasis leads to endoplasmic reticulum (ER) stress and is linked to the pathogenesis of neurodegenerative diseases. Hence, understanding the ability of neuronal cells to cope with chronic ER stress is of fundamental interest. Interestingly, several brain areas uphold functions that enable them to resist challenges associated with neurodegeneration. Here, we established novel clonal mouse hippocampal (HT22) cell lines that are resistant to prolonged (chronic) ER stress induced by thapsigargin (TgR) or tunicamycin (TmR) as in vitro models to study the adaption to ER stress. Morphologically, we observed a significant increase in vesicular und autophagosomal structures in both resistant lines and 'giant lysosomes', especially striking in TgR cells. While autophagic activity increased under ER stress, lysosomal function appeared slightly impaired; in both cell lines, we observed enhanced ER-phagy. However, proteomic analyses revealed that various protein clusters and signaling pathways were differentially regulated in TgR versus TmR cells in response to chronic ER stress. Additionally, bioenergetic analyses in both resistant cell lines showed a shift toward aerobic glycolysis ('Warburg effect') and a defective complex I of the oxidative phosphorylation (OXPHOS) machinery. Furthermore, ER stress-resistant cells differentially activated the unfolded protein response (UPR) comprising IRE1α and ATF6 pathways. These findings display the wide portfolio of adaptive responses of neuronal cells to chronic ER stress. ER stress-resistant neuronal cells could be the basis to uncover molecular modulators of adaptation, resistance, and neuroprotection as potential pharmacological targets for preventing neurodegeneration.
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Affiliation(s)
- Thu Nguyen Minh Pham
- Institute of Pathobiochemistry, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - Natarajan Perumal
- Department of Ophthalmology, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - Caroline Manicam
- Department of Ophthalmology, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - Marion Basoglu
- Department of Structural Cell Biology, Institute for Cell Biology and Neuroscience, Goethe University, Frankfurt am Main, Germany
| | - Stefan Eimer
- Department of Structural Cell Biology, Institute for Cell Biology and Neuroscience, Goethe University, Frankfurt am Main, Germany
| | - Dominik C Fuhrmann
- Institute of Biochemistry I, Faculty of Medicine, Goethe-University Frankfurt, Frankfurt, Germany
| | - Claus U Pietrzik
- Institute of Pathobiochemistry, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - Albrecht M Clement
- Institute of Pathobiochemistry, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - Hagen Körschgen
- Institute of Pathobiochemistry, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - Jana Schepers
- Institute of Pathobiochemistry, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - Christian Behl
- Institute of Pathobiochemistry, University Medical Center of the Johannes Gutenberg University, Mainz, Germany.
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Buonfiglio F, Xia N, Yüksel C, Manicam C, Jiang S, Zadeh JK, Musayeva A, Elksne E, Pfeiffer N, Patzak A, Li H, Gericke A. Studies on the Effects of Hypercholesterolemia on Mouse Ophthalmic Artery Reactivity. Diseases 2023; 11:124. [PMID: 37873768 PMCID: PMC10594501 DOI: 10.3390/diseases11040124] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 09/10/2023] [Accepted: 09/18/2023] [Indexed: 10/25/2023] Open
Abstract
Atherogenic lipoproteins may impair vascular reactivity, leading to tissue damage in various organs, including the eye. This study aimed to investigate whether ophthalmic artery reactivity is affected in mice lacking the apolipoprotein E gene (ApoE-/-), a model for hypercholesterolemia and atherosclerosis. Twelve-month-old male ApoE-/- mice and age-matched wild-type controls were used to assess vascular reactivity using videomicroscopy. Moreover, the vascular mechanics, lipid content, levels of reactive oxygen species (ROS), and expression of pro-oxidant redox enzymes and the lectin-like oxidized low-density lipoprotein receptor-1 (LOX-1) were determined in vascular tissue. Unlike the aorta, the ophthalmic artery of ApoE-/- mice developed no signs of endothelial dysfunction and no signs of excessive lipid deposition. Remarkably, the levels of ROS, nicotinamide adenine dinucleotide phosphate oxidase 1 (NOX1), NOX2, NOX4, and LOX-1 were increased in the aorta but not in the ophthalmic artery of ApoE-/- mice. Our findings suggest that ApoE-/- mice develop endothelial dysfunction in the aorta by increased oxidative stress via the involvement of LOX-1, NOX1, and NOX2, whereas NOX4 may participate in media remodeling. In contrast, the ophthalmic artery appears to be resistant to chronic apolipoprotein E deficiency. A lack of LOX-1 expression/overexpression in response to increased oxidized low-density lipoprotein levels may be a possible mechanism of action.
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Affiliation(s)
- Francesco Buonfiglio
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Ning Xia
- Department of Pharmacology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Can Yüksel
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Caroline Manicam
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Subao Jiang
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Jenia Kouchek Zadeh
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Aytan Musayeva
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Eva Elksne
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Norbert Pfeiffer
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Andreas Patzak
- Institute of Translational Physiology, Charité—Universitätsmedizin Berlin, Charitéplatz 1, 10117 Berlin, Germany
| | - Huige Li
- Department of Pharmacology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Adrian Gericke
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
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Chronopoulos P, Manicam C, Zadeh JK, Laspas P, Unkrig JC, Göbel ML, Musayeva A, Pfeiffer N, Oelze M, Daiber A, Li H, Xia N, Gericke A. Effects of Resveratrol on Vascular Function in Retinal Ischemia-Reperfusion Injury. Antioxidants (Basel) 2023; 12:antiox12040853. [PMID: 37107227 PMCID: PMC10135068 DOI: 10.3390/antiox12040853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Revised: 03/25/2023] [Accepted: 03/29/2023] [Indexed: 04/05/2023] Open
Abstract
Ischemia-reperfusion (I/R) events are involved in the development of various ocular pathologies, e.g., retinal artery or vein occlusion. We tested the hypothesis that resveratrol is protective against I/R injury in the murine retina. Intraocular pressure (IOP) was elevated in anaesthetized mice to 110 mm Hg for 45 min via a micropipette placed in the anterior chamber to induce ocular ischemia. In the fellow eye, which served as control, IOP was kept at a physiological level. One group received resveratrol (30 mg/kg/day p.o. once daily) starting one day before the I/R event, whereas the other group of mice received vehicle solution only. On day eight after the I/R event, mice were sacrificed and retinal wholemounts were prepared and immuno-stained using a Brn3a antibody to quantify retinal ganglion cells. Reactivity of retinal arterioles was measured in retinal vascular preparations using video microscopy. Reactive oxygen species (ROS) and nitrogen species (RNS) were quantified in ocular cryosections by dihydroethidium and anti-3-nitrotyrosine staining, respectively. Moreover, hypoxic, redox and nitric oxide synthase gene expression was quantified in retinal explants by PCR. I/R significantly diminished retinal ganglion cell number in vehicle-treated mice. Conversely, only a negligible reduction in retinal ganglion cell number was observed in resveratrol-treated mice following I/R. Endothelial function and autoregulation were markedly reduced, which was accompanied by increased ROS and RNS in retinal blood vessels of vehicle-exposed mice following I/R, whereas resveratrol preserved vascular endothelial function and autoregulation and blunted ROS and RNS formation. Moreover, resveratrol reduced I/R-induced mRNA expression for the prooxidant enzyme, nicotinamide adenine dinucleotide phosphate oxidase 2 (NOX2). Our data provide evidence that resveratrol protects from I/R-induced retinal ganglion cell loss and endothelial dysfunction in the murine retina by reducing nitro-oxidative stress possibly via suppression of NOX2 upregulation.
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Affiliation(s)
- Panagiotis Chronopoulos
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany
| | - Caroline Manicam
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany
| | - Jenia Kouchek Zadeh
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany
- AbbVie Germany GmbH & Co., KG, 65189 Wiesbaden, Germany
| | - Panagiotis Laspas
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany
| | - Johanna Charlotte Unkrig
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany
| | - Marie Luise Göbel
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany
| | - Aytan Musayeva
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany
- Laboratory of Corneal Immunology, Transplantation and Regeneration, Schepens Eye Research Institute, Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, 20 Staniford St, Boston, MA 02114, USA
| | - Norbert Pfeiffer
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany
| | - Matthias Oelze
- Department of Cardiology, Cardiology 1, University Medical Center, Johannes Gutenberg University, Langenbeckstrasse 1, 55131 Mainz, Germany
| | - Andreas Daiber
- Department of Cardiology, Cardiology 1, University Medical Center, Johannes Gutenberg University, Langenbeckstrasse 1, 55131 Mainz, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Rhine-Main, 55131 Mainz, Germany
| | - Huige Li
- Department of Pharmacology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany
| | - Ning Xia
- Department of Pharmacology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany
| | - Adrian Gericke
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany
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Manicam C, Herfurth A, Grus F, Pfeiffer N, Perumal N. Acute omega‐3 fatty acid supplementation confers novel neurovascular‐protective effects on the retinal and ophthalmic arterial proteome of Cyp2c44−/− mice. Acta Ophthalmol 2022. [DOI: 10.1111/j.1755-3768.2022.0300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Affiliation(s)
- Caroline Manicam
- Department of Ophthalmology University Medical Centre of the Johannes Gutenberg University Mainz Mainz Germany
| | - Anna Herfurth
- Department of Ophthalmology University Medical Centre of the Johannes Gutenberg University Mainz Mainz Germany
| | - Franz Grus
- Department of Ophthalmology University Medical Centre of the Johannes Gutenberg University Mainz Mainz Germany
| | - Norbert Pfeiffer
- Department of Ophthalmology University Medical Centre of the Johannes Gutenberg University Mainz Mainz Germany
| | - Natarajan Perumal
- Department of Ophthalmology University Medical Centre of the Johannes Gutenberg University Mainz Mainz Germany
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Perumal N, Jeong E, Runde S, Manicam C, Pfeiffer N, Grus F. Application of Thealoz® duo eye drops confers novel protective effects on the ocular surface of dry eye patients. Acta Ophthalmol 2022. [DOI: 10.1111/j.1755-3768.2022.0256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Natarajan Perumal
- Experimental and Translational Ophthalmology University Medical Center of the Johannes Gutenberg University Mainz Mainz Germany
| | - Eunjin Jeong
- Experimental and Translational Ophthalmology University Medical Center of the Johannes Gutenberg University Mainz Mainz Germany
| | - Sarah Runde
- Experimental and Translational Ophthalmology University Medical Center of the Johannes Gutenberg University Mainz Mainz Germany
| | - Caroline Manicam
- Experimental and Translational Ophthalmology University Medical Center of the Johannes Gutenberg University Mainz Mainz Germany
| | - Norbert Pfeiffer
- Experimental and Translational Ophthalmology University Medical Center of the Johannes Gutenberg University Mainz Mainz Germany
| | - Franz Grus
- Experimental and Translational Ophthalmology University Medical Center of the Johannes Gutenberg University Mainz Mainz Germany
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Herzog DP, Perumal N, Manicam C, Treccani G, Nadig J, Rossmanith M, Engelmann J, Jene T, Hasch A, van der Kooij MA, Lieb K, Gassen NC, Grus FH, Müller MB. Longitudinal CSF proteome profiling in mice to uncover the acute and sustained mechanisms of action of rapid acting antidepressant (2R,6R)-hydroxynorketamine (HNK). Neurobiol Stress 2021; 15:100404. [PMID: 34632008 PMCID: PMC8488754 DOI: 10.1016/j.ynstr.2021.100404] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 09/16/2021] [Accepted: 09/26/2021] [Indexed: 02/04/2023] Open
Abstract
Delayed onset of antidepressant action is a shortcoming in depression treatment. Ketamine and its metabolite (2R,6R)-hydroxynorketamine (HNK) have emerged as promising rapid-acting antidepressants. However, their mechanism of action remains unknown. In this study, we first described the anxious and depression-prone inbred mouse strain, DBA/2J, as an animal model to assess the antidepressant-like effects of ketamine and HNK in vivo. To decode the molecular mechanisms mediating HNK's rapid antidepressant effects, a longitudinal cerebrospinal fluid (CSF) proteome profiling of its acute and sustained effects was conducted using an unbiased, hypothesis-free mass spectrometry-based proteomics approach. A total of 387 proteins were identified, with a major implication of significantly differentially expressed proteins in the glucocorticoid receptor (GR) signaling pathway, providing evidence for a link between HNK and regulation of the stress hormone system. Mechanistically, we identified HNK to repress GR-mediated transcription and reduce hormonal sensitivity of GR in vitro. In addition, mammalian target of rapamycin (mTOR) and brain-derived neurotrophic factor (BDNF) were predicted to be important upstream regulators of HNK treatment. Our results contribute to precise understanding of the temporal dynamics and molecular targets underlying HNK's rapid antidepressant-like effects, which can be used as a benchmark for improved treatment strategies for depression in future.
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Affiliation(s)
- David P Herzog
- Department of Psychiatry and Psychotherapy and Focus Program Translational Neurosciences, Johannes Gutenberg University Medical Center Mainz, Mainz, Germany
| | - Natarajan Perumal
- Experimental and Translational Ophthalmology, Department of Ophthalmology, Johannes Gutenberg University Medical Center, Mainz, Germany
| | - Caroline Manicam
- Experimental and Translational Ophthalmology, Department of Ophthalmology, Johannes Gutenberg University Medical Center, Mainz, Germany
| | - Giulia Treccani
- Department of Psychiatry and Psychotherapy and Focus Program Translational Neurosciences, Johannes Gutenberg University Medical Center Mainz, Mainz, Germany.,Institute for Microscopic Anatomy and Neurobiology, Johannes Gutenberg University Medical Center, Mainz, Germany.,Translational Neuropsychiatry Unit, Department of Clinical Medicine, Aarhus University, Risskov, Denmark
| | - Jens Nadig
- Department of Psychiatry and Psychotherapy and Focus Program Translational Neurosciences, Johannes Gutenberg University Medical Center Mainz, Mainz, Germany
| | - Milena Rossmanith
- Experimental and Translational Ophthalmology, Department of Ophthalmology, Johannes Gutenberg University Medical Center, Mainz, Germany
| | - Jan Engelmann
- Department of Psychiatry and Psychotherapy and Focus Program Translational Neurosciences, Johannes Gutenberg University Medical Center Mainz, Mainz, Germany
| | - Tanja Jene
- Department of Psychiatry and Psychotherapy and Focus Program Translational Neurosciences, Johannes Gutenberg University Medical Center Mainz, Mainz, Germany
| | - Annika Hasch
- Department of Psychiatry and Psychotherapy and Focus Program Translational Neurosciences, Johannes Gutenberg University Medical Center Mainz, Mainz, Germany
| | - Michael A van der Kooij
- Department of Psychiatry and Psychotherapy and Focus Program Translational Neurosciences, Johannes Gutenberg University Medical Center Mainz, Mainz, Germany.,Leibniz Institute for Resilience Research, Mainz, Germany
| | - Klaus Lieb
- Department of Psychiatry and Psychotherapy and Focus Program Translational Neurosciences, Johannes Gutenberg University Medical Center Mainz, Mainz, Germany.,Leibniz Institute for Resilience Research, Mainz, Germany
| | - Nils C Gassen
- Neurohomeostasis Research Group, Department of Psychiatry and Psychotherapy, University Medical Center Bonn, Bonn, Germany
| | - Franz H Grus
- Experimental and Translational Ophthalmology, Department of Ophthalmology, Johannes Gutenberg University Medical Center, Mainz, Germany
| | - Marianne B Müller
- Department of Psychiatry and Psychotherapy and Focus Program Translational Neurosciences, Johannes Gutenberg University Medical Center Mainz, Mainz, Germany.,Leibniz Institute for Resilience Research, Mainz, Germany
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Musayeva A, Unkrig JC, Zhutdieva MB, Manicam C, Ruan Y, Laspas P, Chronopoulos P, Göbel ML, Pfeiffer N, Brochhausen C, Daiber A, Oelze M, Li H, Xia N, Gericke A. Betulinic Acid Protects from Ischemia-Reperfusion Injury in the Mouse Retina. Cells 2021; 10:cells10092440. [PMID: 34572088 PMCID: PMC8469383 DOI: 10.3390/cells10092440] [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] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 09/10/2021] [Accepted: 09/14/2021] [Indexed: 12/16/2022] Open
Abstract
Ischemia/reperfusion (I/R) events are involved in the pathophysiology of numerous ocular diseases. The purpose of this study was to test the hypothesis that betulinic acid protects from I/R injury in the mouse retina. Ocular ischemia was induced in mice by increasing intraocular pressure (IOP) to 110 mm Hg for 45 min, while the fellow eye served as a control. One group of mice received betulinic acid (50 mg/kg/day p.o. once daily) and the other group received the vehicle solution only. Eight days after the I/R event, the animals were killed and the retinal wholemounts and optic nerve cross-sections were prepared and stained with cresyl blue or toluidine blue, respectively, to count cells in the ganglion cell layer (GCL) of the retina and axons in the optic nerve. Retinal arteriole responses were measured in isolated retinas by video microscopy. The levels of reactive oxygen species (ROS) were assessed in retinal cryosections and redox gene expression was determined in isolated retinas by quantitative PCR. I/R markedly reduced cell number in the GCL and axon number in the optic nerve of the vehicle-treated mice. In contrast, only a negligible reduction in cell and axon number was observed following I/R in the betulinic acid-treated mice. Endothelial function was markedly reduced and ROS levels were increased in retinal arterioles of vehicle-exposed eyes following I/R, whereas betulinic acid partially prevented vascular endothelial dysfunction and ROS formation. Moreover, betulinic acid boosted mRNA expression for the antioxidant enzymes SOD3 and HO-1 following I/R. Our data provide evidence that betulinic acid protects from I/R injury in the mouse retina. Improvement of vascular endothelial function and the reduction in ROS levels appear to contribute to the neuroprotective effect.
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Affiliation(s)
- Aytan Musayeva
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany; (A.M.); (J.C.U.); (M.B.Z.); (C.M.); (Y.R.); (P.L.); (P.C.); (M.L.G.); (N.P.)
- Laboratory of Corneal Immunology, Transplantation and Regeneration, Schepens Eye Research Institute, Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA 02114, USA
| | - Johanna C. Unkrig
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany; (A.M.); (J.C.U.); (M.B.Z.); (C.M.); (Y.R.); (P.L.); (P.C.); (M.L.G.); (N.P.)
| | - Mayagozel B. Zhutdieva
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany; (A.M.); (J.C.U.); (M.B.Z.); (C.M.); (Y.R.); (P.L.); (P.C.); (M.L.G.); (N.P.)
| | - Caroline Manicam
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany; (A.M.); (J.C.U.); (M.B.Z.); (C.M.); (Y.R.); (P.L.); (P.C.); (M.L.G.); (N.P.)
| | - Yue Ruan
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany; (A.M.); (J.C.U.); (M.B.Z.); (C.M.); (Y.R.); (P.L.); (P.C.); (M.L.G.); (N.P.)
| | - Panagiotis Laspas
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany; (A.M.); (J.C.U.); (M.B.Z.); (C.M.); (Y.R.); (P.L.); (P.C.); (M.L.G.); (N.P.)
| | - Panagiotis Chronopoulos
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany; (A.M.); (J.C.U.); (M.B.Z.); (C.M.); (Y.R.); (P.L.); (P.C.); (M.L.G.); (N.P.)
| | - Marie L. Göbel
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany; (A.M.); (J.C.U.); (M.B.Z.); (C.M.); (Y.R.); (P.L.); (P.C.); (M.L.G.); (N.P.)
| | - Norbert Pfeiffer
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany; (A.M.); (J.C.U.); (M.B.Z.); (C.M.); (Y.R.); (P.L.); (P.C.); (M.L.G.); (N.P.)
| | - Christoph Brochhausen
- Institute of Pathology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany;
- Institute of Pathology, University of Regensburg, Franz-Josef-Strauß-Allee 11, 93053 Regensburg, Germany
| | - Andreas Daiber
- Department of Cardiology 1, Laboratory of Molecular Cardiology, University Medical Center, Johannes Gutenberg University Mainz, Building 605, Langenbeckstrasse 1, 55131 Mainz, Germany; (A.D.); (M.O.)
| | - Matthias Oelze
- Department of Cardiology 1, Laboratory of Molecular Cardiology, University Medical Center, Johannes Gutenberg University Mainz, Building 605, Langenbeckstrasse 1, 55131 Mainz, Germany; (A.D.); (M.O.)
| | - Huige Li
- Department of Pharmacology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany; (H.L.); (N.X.)
| | - Ning Xia
- Department of Pharmacology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany; (H.L.); (N.X.)
| | - Adrian Gericke
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany; (A.M.); (J.C.U.); (M.B.Z.); (C.M.); (Y.R.); (P.L.); (P.C.); (M.L.G.); (N.P.)
- Correspondence: ; Tel.: +49-613-117-8276
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10
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Birk M, Baum E, Zadeh JK, Manicam C, Pfeiffer N, Patzak A, Helmstädter J, Steven S, Kuntic M, Daiber A, Gericke A. Angiotensin II Induces Oxidative Stress and Endothelial Dysfunction in Mouse Ophthalmic Arteries via Involvement of AT1 Receptors and NOX2. Antioxidants (Basel) 2021; 10:antiox10081238. [PMID: 34439486 PMCID: PMC8389243 DOI: 10.3390/antiox10081238] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [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: 06/19/2021] [Revised: 07/27/2021] [Accepted: 07/29/2021] [Indexed: 12/13/2022] Open
Abstract
Angiotensin II (Ang II) has been implicated in the pathophysiology of various age-dependent ocular diseases. The purpose of this study was to test the hypothesis that Ang II induces endothelial dysfunction in mouse ophthalmic arteries and to identify the underlying mechanisms. Ophthalmic arteries were exposed to Ang II in vivo and in vitro to determine vascular function by video microscopy. Moreover, the formation of reactive oxygen species (ROS) was quantified and the expression of prooxidant redox genes and proteins was determined. The endothelium-dependent artery responses were blunted after both in vivo and in vitro exposure to Ang II. The Ang II type 1 receptor (AT1R) blocker, candesartan, and the ROS scavenger, Tiron, prevented Ang II-induced endothelial dysfunction. ROS levels and NOX2 expression were increased following Ang II incubation. Remarkably, Ang II failed to induce endothelial dysfunction in ophthalmic arteries from NOX2-deficient mice. Following Ang II incubation, endothelium-dependent vasodilation was mainly mediated by cytochrome P450 oxygenase (CYP450) metabolites, while the contribution of nitric oxide synthase (NOS) and 12/15-lipoxygenase (12/15-LOX) pathways became negligible. These findings provide evidence that Ang II induces endothelial dysfunction in mouse ophthalmic arteries via AT1R activation and NOX2-dependent ROS formation. From a clinical point of view, the blockade of AT1R signaling and/or NOX2 may be helpful to retain or restore endothelial function in ocular blood vessels in certain ocular diseases.
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Affiliation(s)
- Michael Birk
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany; (M.B.); (E.B.); (J.K.Z.); (C.M.); (N.P.)
- Department of Ophthalmology, University Eye Hospital Tübingen, Elfriede-Aulhorn-Straße 7, 72076 Tübingen, Germany
| | - Ewa Baum
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany; (M.B.); (E.B.); (J.K.Z.); (C.M.); (N.P.)
- Department of Social Sciences and the Humanities, Poznan University of Medical Sciences, ul. Rokietnicka 7, 60-806 Poznań, Poland
| | - Jenia Kouchek Zadeh
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany; (M.B.); (E.B.); (J.K.Z.); (C.M.); (N.P.)
| | - Caroline Manicam
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany; (M.B.); (E.B.); (J.K.Z.); (C.M.); (N.P.)
| | - Norbert Pfeiffer
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany; (M.B.); (E.B.); (J.K.Z.); (C.M.); (N.P.)
| | - Andreas Patzak
- Institute of Vegetative Physiology, Charité-Universitätsmedizin Berlin, Charitéplatz 1, 10117 Berlin, Germany;
| | - Johanna Helmstädter
- Department of Cardiology, Cardiology I-Laboratory of Molecular Cardiology, University Medical Center, Johannes Gutenberg University, Building 605, Langenbeckstr. 1, 55131 Mainz, Germany; (J.H.); (S.S.); (M.K.); (A.D.)
| | - Sebastian Steven
- Department of Cardiology, Cardiology I-Laboratory of Molecular Cardiology, University Medical Center, Johannes Gutenberg University, Building 605, Langenbeckstr. 1, 55131 Mainz, Germany; (J.H.); (S.S.); (M.K.); (A.D.)
| | - Marin Kuntic
- Department of Cardiology, Cardiology I-Laboratory of Molecular Cardiology, University Medical Center, Johannes Gutenberg University, Building 605, Langenbeckstr. 1, 55131 Mainz, Germany; (J.H.); (S.S.); (M.K.); (A.D.)
| | - Andreas Daiber
- Department of Cardiology, Cardiology I-Laboratory of Molecular Cardiology, University Medical Center, Johannes Gutenberg University, Building 605, Langenbeckstr. 1, 55131 Mainz, Germany; (J.H.); (S.S.); (M.K.); (A.D.)
| | - Adrian Gericke
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany; (M.B.); (E.B.); (J.K.Z.); (C.M.); (N.P.)
- Correspondence: ; Tel.: +49-613-117-8276
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Liu H, Perumal N, Manicam C, Mercieca K, Prokosch V. Proteomics Reveals the Potential Protective Mechanism of Hydrogen Sulfide on Retinal Ganglion Cells in an Ischemia/Reperfusion Injury Animal Model. Pharmaceuticals (Basel) 2020; 13:ph13090213. [PMID: 32867129 PMCID: PMC7557839 DOI: 10.3390/ph13090213] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [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: 07/28/2020] [Revised: 08/24/2020] [Accepted: 08/25/2020] [Indexed: 12/13/2022] Open
Abstract
Glaucoma is the leading cause of irreversible blindness and is characterized by progressive retinal ganglion cell (RGC) degeneration. Hydrogen sulfide (H2S) is a potent neurotransmitter and has been proven to protect RGCs against glaucomatous injury in vitro and in vivo. This study is to provide an overall insight of H2S’s role in glaucoma pathophysiology. Ischemia-reperfusion injury (I/R) was induced in Sprague-Dawley rats (n = 12) by elevating intraocular pressure to 55 mmHg for 60 min. Six of the animals received intravitreal injection of H2S precursor prior to the procedure and the retina was harvested 24 h later. Contralateral eyes were assigned as control. RGCs were quantified and compared within the groups. Retinal proteins were analyzed via label-free mass spectrometry based quantitative proteomics approach. The pathways of the differentially expressed proteins were identified by ingenuity pathway analysis (IPA). H2S significantly improved RGC survival against I/R in vivo (p < 0.001). In total 1115 proteins were identified, 18 key proteins were significantly differentially expressed due to I/R and restored by H2S. Another 11 proteins were differentially expressed following H2S. IPA revealed a significant H2S-mediated activation of pathways related to mitochondrial function, iron homeostasis and vasodilation. This study provides first evidence of the complex role that H2S plays in protecting RGC against I/R.
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Affiliation(s)
- Hanhan Liu
- Experimental and Translational Ophthalmology, University Medical Centre of the Johannes Gutenberg University Mainz, 55131 Mainz, Germany; (H.L.); (N.P.); (C.M.)
| | - Natarajan Perumal
- Experimental and Translational Ophthalmology, University Medical Centre of the Johannes Gutenberg University Mainz, 55131 Mainz, Germany; (H.L.); (N.P.); (C.M.)
| | - Caroline Manicam
- Experimental and Translational Ophthalmology, University Medical Centre of the Johannes Gutenberg University Mainz, 55131 Mainz, Germany; (H.L.); (N.P.); (C.M.)
| | - Karl Mercieca
- Royal Eye Hospital, School of Medicine, University of Manchester, Manchester M13 9WH, UK;
| | - Verena Prokosch
- Department of Ophthalmology, University Medical Centre of the Johannes Gutenberg University Mainz, 55131 Mainz, Germany
- Correspondence: ; Tel.: +49-1703862250
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12
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Perumal N, Straßburger L, Herzog DP, Müller MB, Pfeiffer N, Grus FH, Manicam C. Bioenergetic shift and actin cytoskeleton remodelling as acute vascular adaptive mechanisms to angiotensin II in murine retina and ophthalmic artery. Redox Biol 2020; 34:101597. [PMID: 32513477 PMCID: PMC7327981 DOI: 10.1016/j.redox.2020.101597] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [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: 03/31/2020] [Revised: 05/22/2020] [Accepted: 05/25/2020] [Indexed: 12/17/2022] Open
Abstract
Ocular vascular dysfunction is a major contributing factor to the pathogenesis of glaucoma. In recent years, there has been a renewed interest in the role of angiotensin II (Ang II) in mediating the disease progression. Despite its (patho)physiological importance, the molecular mechanisms underlying Ang II-mediated oxidative stress remain largely unexplored in the ocular vasculature. Here, we provide the first direct evidence of the alterations of proteome and signalling pathways underlying Ang II-elicited oxidative insult independent of arterial pressure changes in the ophthalmic artery (OA) and retina (R) employing an in vitro experimental model. Both R and OA were isolated from male C57Bl/6J mice (n = 15/group; n = 5/biological replicate) and incubated overnight in medium containing either vehicle or Ang II (0.1 μM) at physiological conditions. Label-free quantitative mass spectrometry (MS)-based proteomics analysis identified a differential expression of 107 and 34 proteins in the R and OA, respectively. Statistical and bioinformatics analyses revealed that protein clusters involved in actin cytoskeleton and integrin-linked kinase signalling were significantly activated in the OA. Conversely, a large majority of differentially expressed retinal proteins were involved in dysregulation of numerous energy-producing and metabolic signalling pathways, hinting to a possible shift in retinal cell bioenergetics. Particularly, Ang II-mediated downregulation of septin-7 (Sept7; p < 0.01) and superoxide dismutase [Cu-Zn] (Sod1; p < 0.05), and upregulation of troponin T, fast skeletal muscle (Tnnt3; p < 0.05) and tropomyosin alpha-3 chain (Tpm3; p < 0.01) in the OA, and significant decreased expressions of two crystallin proteins (Cryab; p < 0.05 and Crybb2; p < 0.0001) in the R were verified at the mRNA level, corroborating our proteomics findings. In summary, these results demonstrated that exogenous application of Ang II over an acute time period caused impairment of retinal bioenergetics and cellular demise, and actin cytoskeleton-mediated vascular remodelling in the OA. Acute Ang II stimulation elicits oxidative stress in ocular vasculature without pressor effect. . Dysregulation of energy-producing and metabolic pathways are implicated in the retina. . Actin cytoskeleton remodelling are vascular adaptation processes in the ophthalmic artery. .
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Affiliation(s)
- Natarajan Perumal
- Department of Ophthalmology, University Medical Centre of the Johannes Gutenberg University Mainz, Mainz, Germany.
| | - Lars Straßburger
- Department of Ophthalmology, University Medical Centre of the Johannes Gutenberg University Mainz, Mainz, Germany.
| | - David P Herzog
- Department of Psychiatry and Psychotherapy & Focus Program Translational Neurosciences (FTN), University Medical Centre of the Johannes Gutenberg University Mainz, Mainz, Germany.
| | - Marianne B Müller
- Department of Psychiatry and Psychotherapy & Focus Program Translational Neurosciences (FTN), University Medical Centre of the Johannes Gutenberg University Mainz, Mainz, Germany.
| | - Norbert Pfeiffer
- Department of Ophthalmology, University Medical Centre of the Johannes Gutenberg University Mainz, Mainz, Germany.
| | - Franz H Grus
- Department of Ophthalmology, University Medical Centre of the Johannes Gutenberg University Mainz, Mainz, Germany.
| | - Caroline Manicam
- Department of Ophthalmology, University Medical Centre of the Johannes Gutenberg University Mainz, Mainz, Germany.
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Schmelter C, Fomo KN, Perumal N, Manicam C, Bell K, Pfeiffer N, Grus FH. Synthetic Polyclonal-Derived CDR Peptides as an Innovative Strategy in Glaucoma Therapy. J Clin Med 2019; 8:jcm8081222. [PMID: 31443184 PMCID: PMC6723090 DOI: 10.3390/jcm8081222] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [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: 06/27/2019] [Revised: 07/30/2019] [Accepted: 08/12/2019] [Indexed: 12/16/2022] Open
Abstract
The pathogenesis of glaucoma is strongly associated with the occurrence of autoimmune-mediated loss of retinal ganglion cells (RGCs) and additionally, recent evidence shows that specific antibody-derived signature peptides are significantly differentially expressed in sera of primary-open angle glaucoma patients (POAG) compared to healthy controls. Synthetically antibody-derived peptides can modulate various effector functions of the immune system and act as antimicrobial or antiviral molecules. In an ex vivo adolescent glaucoma model, this study, for the first time, demonstrates that polyclonal-derived complementarity-determining regions (CDRs) can significantly increase the survival rate of RGCs (p = 0.013). We subsequently performed affinity capture experiments that verified the mitochondrial serine protease HTRA2 (gene name: HTRA2) as a high-affinity retinal epitope target of CDR1 sequence motif ASGYTFTNYGLSWVR. Quantitative proteomic analysis of the CDR-treated retinal explants revealed increased expression of various anti-apoptotic and anti-oxidative proteins (e.g., VDAC2 and TXN) compared to untreated controls (p < 0.05) as well as decreased expression levels of cellular stress response markers (e.g., HSPE1 and HSP90AA1). Mitochondrial dysfunction, the protein ubiquitination pathway and oxidative phosphorylation were annotated as the most significantly affected signaling pathways and possibly can be traced back to the CDR-induced inhibition or modulation of the master regulator HTRA2. These findings emphasize the great potential of synthetic polyclonal-derived CDR peptides as therapeutic agents in future glaucoma therapy and provide an excellent basis for affinity-based biomarker discovery purposes.
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Affiliation(s)
- Carsten Schmelter
- Department of Experimental and Translational Ophthalmology, University Medical Center, Johannes Gutenberg University, 55131 Mainz, Germany
| | - Kristian Nzogang Fomo
- Department of Experimental and Translational Ophthalmology, University Medical Center, Johannes Gutenberg University, 55131 Mainz, Germany
| | - Natarajan Perumal
- Department of Experimental and Translational Ophthalmology, University Medical Center, Johannes Gutenberg University, 55131 Mainz, Germany
| | - Caroline Manicam
- Department of Experimental and Translational Ophthalmology, University Medical Center, Johannes Gutenberg University, 55131 Mainz, Germany
| | - Katharina Bell
- Department of Experimental and Translational Ophthalmology, University Medical Center, Johannes Gutenberg University, 55131 Mainz, Germany
| | - Norbert Pfeiffer
- Department of Experimental and Translational Ophthalmology, University Medical Center, Johannes Gutenberg University, 55131 Mainz, Germany
| | - Franz H Grus
- Department of Experimental and Translational Ophthalmology, University Medical Center, Johannes Gutenberg University, 55131 Mainz, Germany.
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14
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Chakraborty D, Felzen V, Hiebel C, Stürner E, Perumal N, Manicam C, Sehn E, Grus F, Wolfrum U, Behl C. Enhanced autophagic-lysosomal activity and increased BAG3-mediated selective macroautophagy as adaptive response of neuronal cells to chronic oxidative stress. Redox Biol 2019; 24:101181. [PMID: 30959460 PMCID: PMC6454062 DOI: 10.1016/j.redox.2019.101181] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [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: 01/09/2019] [Revised: 03/26/2019] [Accepted: 03/27/2019] [Indexed: 01/05/2023] Open
Abstract
Oxidative stress and a disturbed cellular protein homeostasis (proteostasis) belong to the most important hallmarks of aging and of neurodegenerative disorders. The proteasomal and autophagic-lysosomal degradation pathways are key measures to maintain proteostasis. Here, we report that hippocampal cells selected for full adaptation and resistance to oxidative stress induced by hydrogen peroxide (oxidative stress-resistant cells, OxSR cells) showed a massive increase in the expression of components of the cellular autophagic-lysosomal network and a significantly higher overall autophagic activity. A comparative expression analysis revealed that distinct key regulators of autophagy are upregulated in OxSR cells. The observed adaptive autophagic response was found to be independent of the upstream autophagy regulator mTOR but is accompanied by a significant upregulation of further downstream components of the canonical autophagy network such as Beclin1, WIPI1 and the transmembrane ATG9 proteins. Interestingly, the expression of the HSP70 co-chaperone BAG3, mediator of BAG3-mediated selective macroautophagy and highly relevant for the clearance of aggregated proteins in cells, was found to be increased in OxSR cells that were consequently able to effectively overcome proteotoxic stress. Overexpression of BAG3 in oxidative stress-sensitive HT22 wildtype cells partly established the vesicular phenotype and the enhanced autophagic flux seen in OxSR cells suggesting that BAG3 takes over an important part in the adaptation process. A full proteome analysis demonstrated additional changes in the expression of mitochondrial proteins, metabolic enzymes and different pathway regulators in OxSR cells as consequence of the adaptation to oxidative stress in addition to autophagy-related proteins. Taken together, this analysis revealed a wide variety of pathways and players that act as adaptive response to chronic redox stress in neuronal cells.
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Affiliation(s)
- Debapriya Chakraborty
- Institute of Pathobiochemistry, University Medical Center Mainz of the Johannes Gutenberg University, 55099, Mainz, Germany.
| | - Vanessa Felzen
- Institute of Pathobiochemistry, University Medical Center Mainz of the Johannes Gutenberg University, 55099, Mainz, Germany.
| | - Christof Hiebel
- Institute of Pathobiochemistry, University Medical Center Mainz of the Johannes Gutenberg University, 55099, Mainz, Germany.
| | - Elisabeth Stürner
- Institute of Pathobiochemistry, University Medical Center Mainz of the Johannes Gutenberg University, 55099, Mainz, Germany.
| | - Natarajan Perumal
- Experimental and Translational Ophthalmology, University Medical Center Mainz, 55131, Mainz, Germany.
| | - Caroline Manicam
- Experimental and Translational Ophthalmology, University Medical Center Mainz, 55131, Mainz, Germany.
| | - Elisabeth Sehn
- Institute for Molecular Physiology, Johannes Gutenberg University, 55128, Mainz, Germany.
| | - Franz Grus
- Experimental and Translational Ophthalmology, University Medical Center Mainz, 55131, Mainz, Germany.
| | - Uwe Wolfrum
- Institute for Molecular Physiology, Johannes Gutenberg University, 55128, Mainz, Germany.
| | - Christian Behl
- Institute of Pathobiochemistry, University Medical Center Mainz of the Johannes Gutenberg University, 55099, Mainz, Germany.
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15
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Perumal N, Straßburger L, Schmelter C, Gericke A, Pfeiffer N, Grus FH, Manicam C. Sample Preparation for Mass-spectrometry-based Proteomics Analysis of Ocular Microvessels. J Vis Exp 2019. [PMID: 30855578 DOI: 10.3791/59140] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
The use of isolated ocular blood vessels in vitro to decipher the pathophysiological state of the eye using advanced technological approaches has greatly expanded our understanding of certain diseases. Mass spectrometry (MS)-based proteomics has emerged as a powerful tool to unravel alterations in the molecular mechanisms and protein signaling pathways in the vascular beds in health and disease. However, sample preparation steps prior to MS analyses are crucial to obtain reproducible results and in-depth elucidation of the complex proteome. This is particularly important for preparation of ocular microvessels, where the amount of sample available for analyses is often limited and thus, poses a challenge for optimum protein extraction. This article endeavors to provide an efficient, rapid and robust protocol for sample preparation from an exemplary retrobulbar ocular vascular bed employing the porcine short posterior ciliary arteries. The present method focuses on protein extraction procedures from both the supernatant and pellet of the sample following homogenization, sample cleaning with centrifugal filter devices prior to one-dimensional gel electrophoresis and peptide purification steps for label-free quantification in a liquid chromatography-electrospray ionization-linear ion trap-Orbitrap MS system. Although this method has been developed specifically for proteomics analyses of ocular microvessels, we have also provided convincing evidence that it can also be readily employed for other tissue-based samples.
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Affiliation(s)
- Natarajan Perumal
- Department of Ophthalmology, University Medical Centre of the Johannes Gutenberg University Mainz
| | - Lars Straßburger
- Department of Ophthalmology, University Medical Centre of the Johannes Gutenberg University Mainz
| | - Carsten Schmelter
- Department of Ophthalmology, University Medical Centre of the Johannes Gutenberg University Mainz
| | - Adrian Gericke
- Department of Ophthalmology, University Medical Centre of the Johannes Gutenberg University Mainz
| | - Norbert Pfeiffer
- Department of Ophthalmology, University Medical Centre of the Johannes Gutenberg University Mainz
| | - Franz H Grus
- Department of Ophthalmology, University Medical Centre of the Johannes Gutenberg University Mainz
| | - Caroline Manicam
- Department of Ophthalmology, University Medical Centre of the Johannes Gutenberg University Mainz;
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16
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Gericke A, Wolff I, Musayeva A, Zadeh JK, Manicam C, Pfeiffer N, Li H, Xia N. Retinal arteriole reactivity in mice lacking the endothelial nitric oxide synthase (eNOS) gene. Exp Eye Res 2019; 181:150-156. [PMID: 30716330 DOI: 10.1016/j.exer.2019.01.022] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [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: 11/01/2018] [Revised: 01/17/2019] [Accepted: 01/31/2019] [Indexed: 12/20/2022]
Abstract
Dysfunctional vascular endothelial nitric oxide synthase (eNOS) has been proposed to play a main pathophysiological role in various ocular diseases. The aim of the present study was to test the hypothesis that the chronic lack of eNOS impairs endothelium-dependent vasodilation in retinal arterioles. The relevance of eNOS for mediating vascular responses was studied in retinal vascular preparations from eNOS-deficient mice (eNOS-/-) and wild-type controls in vitro. Changes in luminal diameter in response to vasoactive agents were measured by videomicroscopy. The thromboxane mimetic, U46619, induced similar concentration-dependent constriction of retinal arterioles in eNOS-/- and wild-type mice. Responses to the endothelium-independent vasodilator, nitroprusside, did not differ between both mouse genotypes, either. In contrast, responses to the endothelium-dependent vasodilator, acetylcholine, were blunted in eNOS-/- mice. Non-isoform-selective blockade of either nitric oxide synthase (NOS) or cyclooxygenase (COX) alone did not affect responses to acetylcholine. However, combined blockade of both enzyme families markedly attenuated cholinergic vasodilation. Also, combined blockade of COX and neuronal NOS (nNOS) blunted acetylcholine-induced vasodilation, while combined COX and inducible NOS (iNOS) inhibition had no effect. Simultaneous NOS and COX-1 blockade did not affect cholinergic vasodilation, whereas combined NOS and COX-2 inhibition markedly reduced vasodilation to acetylcholine. These findings are the first to demonstrate that the chronic lack of eNOS is associated with moderate endothelial dysfunction in retinal arterioles. However, eNOS-deficiency is partially compensated by nNOS and COX-2 metabolites, which are reciprocally regulated.
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Affiliation(s)
- Adrian Gericke
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstr. 1, 55131, Mainz, Germany.
| | - Ismael Wolff
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstr. 1, 55131, Mainz, Germany
| | - Aytan Musayeva
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstr. 1, 55131, Mainz, Germany
| | - Jenia Kouchek Zadeh
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstr. 1, 55131, Mainz, Germany
| | - Caroline Manicam
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstr. 1, 55131, Mainz, Germany
| | - Norbert Pfeiffer
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstr. 1, 55131, Mainz, Germany
| | - Huige Li
- Department of Pharmacology, University Medical Center, Johannes Gutenberg University Mainz, Obere Zahlbacher Str. 67, 55131, Mainz, Germany
| | - Ning Xia
- Department of Pharmacology, University Medical Center, Johannes Gutenberg University Mainz, Obere Zahlbacher Str. 67, 55131, Mainz, Germany
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Schmelter C, Funke S, Treml J, Beschnitt A, Perumal N, Manicam C, Pfeiffer N, Grus FH. Comparison of Two Solid-Phase Extraction (SPE) Methods for the Identification and Quantification of Porcine Retinal Protein Markers by LC-MS/MS. Int J Mol Sci 2018; 19:E3847. [PMID: 30513899 PMCID: PMC6321002 DOI: 10.3390/ijms19123847] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [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: 09/19/2018] [Revised: 11/18/2018] [Accepted: 11/27/2018] [Indexed: 01/08/2023] Open
Abstract
Proper sample preparation protocols represent a critical step for liquid chromatography-mass spectrometry (LC-MS)-based proteomic study designs and influence the speed, performance and automation of high-throughput data acquisition. The main objective of this study was to compare two commercial solid-phase extraction (SPE)-based sample preparation protocols (comprising SOLAµTM HRP SPE spin plates from Thermo Fisher Scientific and ZIPTIP® C18 pipette tips from Merck Millipore) for analytical performance, reproducibility, and analysis speed. The house swine represents a promising animal model for studying human eye diseases including glaucoma and provides excellent requirements for the qualitative and quantitative MS-based comparison in terms of ocular proteomics. In total six technical replicates of two protein fractions [extracted with 0.1% dodecyl-ß-maltoside (DDM) or 1% trifluoroacetic acid (TFA)] of porcine retinal tissues were subjected to in-gel trypsin digestion and purified with both SPE-based workflows (N = 3) prior to LC-MS analysis. On average, 550 ± 70 proteins (1512 ± 199 peptides) and 305 ± 48 proteins (806 ± 144 peptides) were identified from DDM and TFA protein fractions, respectively, after ZIPTIP® C18 purification, and SOLAµTM workflow resulted in the detection of 513 ± 55 proteins (1347 ± 180 peptides) and 300 ± 33 proteins (722 ± 87 peptides), respectively (FDR < 1%). Venn diagram analysis revealed an average overlap of 65 ± 2% (DDM fraction) and 69 ± 4% (TFA fraction) in protein identifications between both SPE-based methods. Quantitative analysis of 25 glaucoma-related protein markers also showed no significant differences (P > 0.05) regarding protein recovery between both SPE methods. However, only glaucoma-associated marker MECP2 showed a significant (P = 0.02) higher abundance in ZIPTIP®-purified replicates in comparison to SOLAµTM-treated study samples. Nevertheless, this result was not confirmed in the verification experiment using in-gel trypsin digestion of recombinant MECP2 (P = 0.24). In conclusion, both SPE-based purification methods worked equally well in terms of analytical performance and reproducibility, whereas the analysis speed and the semi-automation of the SOLAµTM spin plates workflow is much more convenient in comparison to the ZIPTIP® C18 method.
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Affiliation(s)
- Carsten Schmelter
- Department of Experimental and Translational Ophthalmology, University Medical Center, Johannes Gutenberg University, 55131 Mainz, Germany.
| | - Sebastian Funke
- Department of Experimental and Translational Ophthalmology, University Medical Center, Johannes Gutenberg University, 55131 Mainz, Germany.
| | - Jana Treml
- Department of Experimental and Translational Ophthalmology, University Medical Center, Johannes Gutenberg University, 55131 Mainz, Germany.
| | - Anja Beschnitt
- Department of Experimental and Translational Ophthalmology, University Medical Center, Johannes Gutenberg University, 55131 Mainz, Germany.
| | - Natarajan Perumal
- Department of Experimental and Translational Ophthalmology, University Medical Center, Johannes Gutenberg University, 55131 Mainz, Germany.
| | - Caroline Manicam
- Department of Experimental and Translational Ophthalmology, University Medical Center, Johannes Gutenberg University, 55131 Mainz, Germany.
| | - Norbert Pfeiffer
- Department of Experimental and Translational Ophthalmology, University Medical Center, Johannes Gutenberg University, 55131 Mainz, Germany.
| | - Franz H Grus
- Department of Experimental and Translational Ophthalmology, University Medical Center, Johannes Gutenberg University, 55131 Mainz, Germany.
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Musayeva A, Manicam C, Steege A, Brochhausen C, Straub BK, Bell K, Pfeiffer N, Gericke A. Role of α 1-adrenoceptor subtypes on corneal epithelial thickness and cell proliferation in mice. Am J Physiol Cell Physiol 2018; 315:C757-C765. [PMID: 30257104 DOI: 10.1152/ajpcell.00314.2018] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Adrenergic stimuli are important for corneal epithelial structure and healing. The purpose of the present study was to examine the hypothesis that the lack of a single α1-adrenoceptor (α1-AR) subtype affects corneal epithelial thickness and cell proliferation. Expression levels of α1-AR mRNA were determined in mouse cornea using real-time PCR. In mice devoid of one of the three α1-AR subtypes (α1A-AR-/-, α1B-AR-/-, α1D-AR-/-) and in wild-type controls, thickness of individual corneal layers, the number of epithelial cell layers, and average epithelial cell size were determined in cryosections. Endothelial cell density and morphology were calculated in corneal explants, and epithelial cell proliferation rate was determined with immunofluorescence microscopy. Moreover, the ultrastructure of the corneal epithelium was examined by transmission electron microscopy. Messenger RNA for all three α1-AR subtypes was expressed in whole cornea and in corneal epithelium from wild-type mice with a rank order of abundance of α1A ≥ α1B > α1D. In contrast, no α1-AR mRNA was detected in the stroma, and only α1B-AR mRNA was found in the Descemet endothelial complex. Remarkably, corneal epithelial thickness and mean epithelial cell size were reduced in α1A-AR-/- mice. Our findings suggest that the α1A-AR exerts growth effects in mouse corneal epithelial cells.
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Affiliation(s)
- Aytan Musayeva
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz , Mainz , Germany
| | - Caroline Manicam
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz , Mainz , Germany
| | - Andreas Steege
- Department of Internal Medicine II, University Medical Center Regensburg , Regensburg , Germany
| | - Christoph Brochhausen
- Institute of Pathology, University Medical Center, Johannes Gutenberg University Mainz , Mainz , Germany.,Institute of Pathology, University Medical Center Regensburg , Regensburg , Germany
| | - Beate K Straub
- Institute of Pathology, University Medical Center, Johannes Gutenberg University Mainz , Mainz , Germany
| | - Katharina Bell
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz , Mainz , Germany
| | - Norbert Pfeiffer
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz , Mainz , Germany
| | - Adrian Gericke
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz , Mainz , Germany
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Abstract
Vascular insufficiency and alterations in normal retinal perfusion are among the major factors for the pathogenesis of various sight-threatening ocular diseases, such as diabetic retinopathy, hypertensive retinopathy, and possibly glaucoma. Therefore, retinal microvascular preparations are pivotal tools for physiological and pharmacological studies to delineate the underlying pathophysiological mechanisms and to design therapies for the diseases. Despite the wide use of mouse models in ophthalmic research, studies on retinal vascular reactivity are scarce in this species. A major reason for this discrepancy is the challenging isolation procedures owing to the small size of these retinal blood vessels, which is ~ ≤ 30 µm in luminal diameter. To circumvent the problem of direct isolation of these retinal microvessels for functional studies, we established an isolation and preparation technique that enables ex vivo studies of mouse retinal vasoactivity under near-physiological conditions. Although the present experimental preparations will specifically refer to the mouse retinal arterioles, this methodology can readily be employed to microvessels from rats.
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Affiliation(s)
- Adrian Gericke
- Department of Ophthalmology, University Medical Center of the Johannes Gutenberg University Mainz;
| | - Evgeny Goloborodko
- Department of Ophthalmology, University Medical Center of the Johannes Gutenberg University Mainz
| | - Norbert Pfeiffer
- Department of Ophthalmology, University Medical Center of the Johannes Gutenberg University Mainz
| | - Caroline Manicam
- Department of Ophthalmology, University Medical Center of the Johannes Gutenberg University Mainz
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Herzog D, Perumal N, Manicam C, Engelmann J, Jene T, Treccani G, van der Kooij M, Grus F, Müller M. Serial assessment of CSF proteome following 2R,6R-Hydroxynorketamine administration in the mouse: in search for rapid acting antidepressant targets. PHARMACOPSYCHIATRY 2017. [DOI: 10.1055/s-0037-1606394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- D Herzog
- Translational Psychiatry, Department of Psychiatry and Psychotherapy, Johannes Gutenberg University Medical Center, Mainz, Germany
| | - N Perumal
- Experimental Ophthalmology, Department of Ophthalmology, Johannes Gutenberg University Medical Center, Mainz, Germany
| | - C Manicam
- Experimental Ophthalmology, Department of Ophthalmology, Johannes Gutenberg University Medical Center, Mainz, Germany
| | - J Engelmann
- Translational Psychiatry, Department of Psychiatry and Psychotherapy, Johannes Gutenberg University Medical Center, Mainz, Germany
| | - T Jene
- Translational Psychiatry, Department of Psychiatry and Psychotherapy, Johannes Gutenberg University Medical Center, Mainz, Germany
| | - G Treccani
- Translational Psychiatry, Department of Psychiatry and Psychotherapy, Johannes Gutenberg University Medical Center, Mainz, Germany
| | - M van der Kooij
- Translational Psychiatry, Department of Psychiatry and Psychotherapy, Johannes Gutenberg University Medical Center, Mainz, Germany
| | - F Grus
- Experimental Ophthalmology, Department of Ophthalmology, Johannes Gutenberg University Medical Center, Mainz, Germany
| | - M Müller
- Translational Psychiatry, Department of Psychiatry and Psychotherapy, Johannes Gutenberg University Medical Center, Mainz, Germany
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Manicam C, Ginter N, Li H, Xia N, Goloborodko E, Zadeh JK, Musayeva A, Pfeiffer N, Gericke A. Compensatory Vasodilator Mechanisms in the Ophthalmic Artery of Endothelial Nitric Oxide Synthase Gene Knockout Mice. Sci Rep 2017; 7:7111. [PMID: 28769073 PMCID: PMC5541003 DOI: 10.1038/s41598-017-07768-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Accepted: 06/29/2017] [Indexed: 01/02/2023] Open
Abstract
Nitric oxide (NO) generated by endothelial nitric oxide synthase (eNOS) plays an important role in the maintenance of ocular vascular homeostasis. Therefore, perturbations in vascular NO synthesis have been implicated in the pathogenesis of several ocular diseases. We recently reported that eNOS contributes significantly to vasodilation of the mouse ophthalmic artery. Interestingly, dilatory responses were also retained in eNOS gene-deficient mice (eNOS-/-), indicating inherent endothelial adaptive mechanism(s) that act as back-up systems in chronic absence of eNOS to preserve vasorelaxation. Thus, this study endeavoured to identify the compensatory mechanism(s) in the ophthalmic artery of eNOS-/- mice employing isolated arterial segments and pharmacological inhibitors in vitro. Endothelium removal virtually abolished acetylcholine (ACh)-induced vasodilation, suggesting an obligatory involvement of the endothelium in cholinergic control of vascular tone. However, non-NOS and non-cyclooxygenase components compensate for eNOS deficiency via endothelium-derived hyperpolarizing factors (EDHFs). Notably, arachidonic acid-derived metabolites of the 12-lipoxygenase pathway were key mediators in activating the inwardly rectifying potassium channels to compensate for chronic lack of eNOS. Conclusively, endothelium-dependent cholinergic responses of the ophthalmic artery in the eNOS-/- mice are largely preserved and, this vascular bed has the ability to compensate for the loss of normal vasodilator responses solely via EDHFs.
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Affiliation(s)
- Caroline Manicam
- Department of Ophthalmology, University Medical Centre of the Johannes Gutenberg University Mainz, Mainz, Germany.
| | - Natalja Ginter
- Department of Ophthalmology, University Medical Centre of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Huige Li
- Institute of Pharmacology, University Medical Centre of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Ning Xia
- Institute of Pharmacology, University Medical Centre of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Evgeny Goloborodko
- Department of Ophthalmology, University Medical Centre of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Jenia Kouchek Zadeh
- Department of Ophthalmology, University Medical Centre of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Aytan Musayeva
- Department of Ophthalmology, University Medical Centre of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Norbert Pfeiffer
- Department of Ophthalmology, University Medical Centre of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Adrian Gericke
- Department of Ophthalmology, University Medical Centre of the Johannes Gutenberg University Mainz, Mainz, Germany
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Perumal N, Manicam C, Steinicke M, Funke S, Pfeiffer N, Grus FH. Characterization of the human aqueous humour proteome: A comparison of the genders. PLoS One 2017; 12:e0172481. [PMID: 28273097 PMCID: PMC5342205 DOI: 10.1371/journal.pone.0172481] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Accepted: 02/06/2017] [Indexed: 01/20/2023] Open
Abstract
Aqueous humour (AH) is an important biologic fluid that maintains normal intraocular pressure and contains proteins that regulate the homeostasis of ocular tissues. Any alterations in the protein compositions are correlated to the pathogenesis of various ocular disorders. In recent years, gender-based medicine has emerged as an important research focus considering the prevalence of certain diseases, which are higher in a particular sex. Nevertheless, the inter-gender variations in the AH proteome are unknown. Therefore, this study endeavoured to characterize the AH proteome to assess the differences between genders. Thirty AH samples of patients who underwent cataract surgery were categorized according to their gender. Label-free quantitative discovery mass spectrometry-based proteomics strategy was employed to characterize the AH proteome. A total of 147 proteins were identified with a false discovery rate of less than 1% and only the top 10 major AH proteins make up almost 90% of the total identified proteins. A large number of proteins identified were correlated to defence, immune and inflammatory mechanisms, and response to wounding. Four proteins were found to be differentially abundant between the genders, comprising SERPINF1, SERPINA3, SERPING1 and PTGDS. The findings emerging from our study provide the first insight into the gender-based proteome differences in the AH and also highlight the importance in considering potential sex-dependent changes in the proteome of ocular pathologies in future studies employing the AH.
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Affiliation(s)
- Natarajan Perumal
- Experimental and Translational Ophthalmology, Department of Ophthalmology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Caroline Manicam
- Experimental and Translational Ophthalmology, Department of Ophthalmology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Matthias Steinicke
- Experimental and Translational Ophthalmology, Department of Ophthalmology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Sebastian Funke
- Experimental and Translational Ophthalmology, Department of Ophthalmology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Norbert Pfeiffer
- Experimental and Translational Ophthalmology, Department of Ophthalmology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Franz H. Grus
- Experimental and Translational Ophthalmology, Department of Ophthalmology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
- * E-mail:
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Manicam C, Perumal N, Pfeiffer N, Grus FH, Gericke A. First insight into the proteome landscape of the porcine short posterior ciliary arteries: Key signalling pathways maintaining physiologic functions. Sci Rep 2016; 6:38298. [PMID: 27922054 PMCID: PMC5138843 DOI: 10.1038/srep38298] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Accepted: 11/07/2016] [Indexed: 01/28/2023] Open
Abstract
Short posterior ciliary arteries (sPCA) provide the major blood supply to the optic nerve head. Emerging evidence has linked structural and functional anomalies of sPCA to the pathogenesis of several ocular disorders that cause varying degrees of visual loss, particularly anterior ischaemic optic neuropathy and glaucoma. Although the functional relevance of this vascular bed is well-recognized, the proteome of sPCA remains uncharacterized. Since the porcine ocular system closely resembles that of the human's and is increasingly employed in translational ophthalmic research, this study characterized the proteome of porcine sPCA employing the mass spectrometry-based proteomics strategy. A total of 1742 proteins and 10527 peptides were identified in the porcine sPCA. The major biological processes involved in the maintenance of physiological functions of the sPCA included redox and metabolic processes, and cytoskeleton organization. These proteins were further clustered into diverse signalling pathways that regulate vasoactivity of sPCA, namely the tight junction, α- and β-adrenoceptor, 14-3-3, nitric oxide synthase and endothelin-1 -mediated signalling pathways. This study provides the first insight into the complex mechanisms dictating the vast protein repertoire in normal vascular physiology of the porcine sPCA. It is envisioned that our findings will serve as important benchmarks for future studies of sPCA.
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Affiliation(s)
- Caroline Manicam
- Department of Ophthalmology, University Medical Centre of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Natarajan Perumal
- Department of Ophthalmology, University Medical Centre of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Norbert Pfeiffer
- Department of Ophthalmology, University Medical Centre of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Franz H. Grus
- Department of Ophthalmology, University Medical Centre of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Adrian Gericke
- Department of Ophthalmology, University Medical Centre of the Johannes Gutenberg University Mainz, Mainz, Germany
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Böhmer T, Manicam C, Steege A, Michel MC, Pfeiffer N, Gericke A. The α₁B -adrenoceptor subtype mediates adrenergic vasoconstriction in mouse retinal arterioles with damaged endothelium. Br J Pharmacol 2015; 171:3858-67. [PMID: 24749494 DOI: 10.1111/bph.12743] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2014] [Revised: 03/22/2014] [Accepted: 04/15/2014] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND AND PURPOSE The α₁-adrenoceptor family plays a critical role in regulating ocular perfusion by mediating responses to catecholamines. The purpose of the present study was to determine the contribution of individual α₁-adrenoceptor subtypes to adrenergic vasoconstriction of retinal arterioles using gene-targeted mice deficient in one of the three adrenoceptor subtypes (α₁A-AR(-/-), α₁B-AR(-/-) and α₁D-AR(-/-) respectively). EXPERIMENTAL APPROACH Using real-time PCR, mRNA expression for individual α₁-adrenoceptor subtypes was determined in murine retinal arterioles. To assess the functional relevance of the three α₁-adrenoceptor subtypes for mediating vascular responses, retinal vascular preparations from wild-type mice and mice deficient in individual α₁-adrenoceptor subtypes were studied in vitro using video microscopy. KEY RESULTS Retinal arterioles expressed mRNA for all three α₁-adrenoceptor subtypes. In functional studies, arterioles from wild-type mice with intact endothelium responded only negligibly to the α₁-adrenoceptor agonist phenylephrine. In endothelium-damaged arterioles from wild-type mice, phenylephrine evoked concentration-dependent constriction that was attenuated by the α₁-adrenoceptor blocker prazosin. Strikingly, phenylephrine only minimally constricted endothelium-damaged retinal arterioles from α₁B-AR(-/-) mice, whereas arterioles from α₁A -AR(-/-) and α₁D-AR(-/-) mice constricted similarly to arterioles from wild-type mice. Constriction to U46619 was similar in endothelium-damaged retinal arterioles from all four mouse genotypes. CONCLUSIONS AND IMPLICATIONS The present study is the first to demonstrate that α₁-adrenoceptor-mediated vasoconstriction in murine retinal arterioles is buffered by the endothelium. When the endothelium is damaged, a vasoconstricting role of the α₁B-adrenoceptor subtype is unveiled. Hence, the α₁B-adrenoceptor may represent a target to selectively modulate retinal blood flow in ocular diseases associated with endothelial dysfunction.
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Affiliation(s)
- Tobias Böhmer
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz, Mainz, Germany
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Kordasz ML, Manicam C, Steege A, Goloborodko E, Amato C, Laspas P, Brochhausen C, Pfeiffer N, Gericke A. Role of 1-Adrenoceptor Subtypes in Pupil Dilation Studied With Gene-Targeted Mice. Invest Ophthalmol Vis Sci 2014; 55:8295-301. [DOI: 10.1167/iovs.14-15706] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Gericke A, Steege A, Manicam C, Böhmer T, Wess J, Pfeiffer N. Role of the M3 muscarinic acetylcholine receptor subtype in murine ophthalmic arteries after endothelial removal. Invest Ophthalmol Vis Sci 2014; 55:625-31. [PMID: 24408978 DOI: 10.1167/iovs.13-13549] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
PURPOSE We tested the hypothesis that the M3 muscarinic acetylcholine receptor subtype mediates cholinergic responses in murine ophthalmic arteries after endothelial removal. METHODS Muscarinic receptor gene expression was determined in ophthalmic arteries with intact and with removed endothelium using real-time PCR. To examine the role of the M3 receptor in mediating vascular responses, ophthalmic arteries from M3 receptor-deficient mice (M3R(-/-)) and respective wild-type controls were studied in vitro. Functional studies were performed in nonpreconstricted arteries with either intact or removed endothelium using video microscopy. RESULTS In endothelium-intact ophthalmic arteries, mRNA for all five muscarinic receptor subtypes was detected, but M3 receptor mRNA was most abundant. In endothelium-removed ophthalmic arteries, M1, M2, and M3 receptors displayed similar mRNA expression levels, which were higher than those for M4 and M5 receptors. In functional studies, acetylcholine evoked vasoconstriction in endothelium-removed arteries from wild-type mice that was virtually abolished after incubation with the muscarinic receptor blocker atropine, indicative of the involvement of muscarinic receptors. In concentration-response experiments, acetylcholine and carbachol concentration-dependently constricted endothelium-removed ophthalmic arteries from wild-type mice, but produced only negligible responses in arteries from M3R(-/-) mice. In contrast, acetylcholine concentration-dependently dilated ophthalmic arteries with intact endothelium from wild-type mice, but not from M3R(-/-) mice. Responses to the nitric oxide donor nitroprusside and to KCl did not differ between ophthalmic arteries from wild-type and M3R(-/-) mice, neither in endothelium-intact nor in endothelium-removed arteries. CONCLUSIONS These findings provide evidence that in murine ophthalmic arteries the muscarinic M3 receptor subtype mediates cholinergic endothelium-dependent vasodilation and endothelium-independent vasoconstriction.
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Affiliation(s)
- Adrian Gericke
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz, Mainz, Germany
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Manicam C, Teng Khoo L, Ong Abdull J, Rahayu Moh E, Seman Z, Chin Sieo C, Hamid M. Subacute Toxic Effects of Melastoma malabathricum Linn. Aqueous Leaf Extract
on Liver and Kidney Histopathology of Rats. INT J PHARMACOL 2013. [DOI: 10.3923/ijp.2013.358.365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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