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Ugurel E, Narimanfar G, Cilek N, Kesim C, Altan C, Sahin A, Yalcin O. Platelet Proteome Reveals Novel Targets for Hypercoagulation in Pseudoexfoliation Syndrome. Int J Mol Sci 2024; 25:1403. [PMID: 38338682 PMCID: PMC10855978 DOI: 10.3390/ijms25031403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 12/10/2023] [Accepted: 12/13/2023] [Indexed: 02/12/2024] Open
Abstract
Pseudoexfoliation syndrome (PEX) is characterized by the accumulation of abnormal extracellular matrix material in ocular and non-ocular tissues, including blood vessel walls. Clot-forming dysfunction might be responsible for venous thrombosis in PEX. We investigated global coagulation, the proteome, and functions of platelets in PEX patients and aimed to determine prognostic biomarkers for thrombosis risk in PEX. Peripheral blood was collected from PEX and retinal vein occlusion (RVO) patients, and age-sex matched controls. Viscoelastic hemostasis was evaluated by rotational thromboelastometry (ROTEM). Platelet markers (CD41, CD42, CD61, and CD62p) and endothelial markers (P-selectin, E-selectin, and von Willebrand factor) were investigated by flow cytometry and ELISA, respectively. The platelet proteome was analyzed by 2D fluorescence difference gel electrophoresis followed by mass spectrometry. Clot formation time (CFT) is significantly reduced in PEX patients compared to the controls (p < 0.05). P-selectin levels were higher in PEX patients than in controls (p < 0.05); E-selectin and von Willebrand factor remained unchanged. The monitorization of CFT by ROTEM, and soluble P-selectin, may help assess thrombotic risk in PEX patients. Proteomic analysis revealed differential expression of Profilin-1 in platelets. Profilin-1 regulates the stability of actin-cytoskeleton and may contribute to impaired platelet hemostatic functions. Increased P-selectin levels together with impaired coagulation dynamics might be responsible for the thrombotic events in PEX disease.
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Affiliation(s)
- Elif Ugurel
- Research Center for Translational Medicine (KUTTAM), Koc University, Istanbul 34450, Turkey; (E.U.); (G.N.); (N.C.)
- Department of Physiology, School of Medicine, Koc University, Istanbul 34450, Turkey
| | - Ghazal Narimanfar
- Research Center for Translational Medicine (KUTTAM), Koc University, Istanbul 34450, Turkey; (E.U.); (G.N.); (N.C.)
| | - Neslihan Cilek
- Research Center for Translational Medicine (KUTTAM), Koc University, Istanbul 34450, Turkey; (E.U.); (G.N.); (N.C.)
- Department of Physiology, School of Medicine, Koc University, Istanbul 34450, Turkey
| | - Cem Kesim
- Department of Ophthalmology, Koc University Medical School, Istanbul 34010, Turkey; (C.K.); (A.S.)
| | - Cigdem Altan
- Beyoglu Eye Training and Research Hospital, University of Health Sciences, Istanbul 34421, Turkey;
| | - Afsun Sahin
- Department of Ophthalmology, Koc University Medical School, Istanbul 34010, Turkey; (C.K.); (A.S.)
| | - Ozlem Yalcin
- Research Center for Translational Medicine (KUTTAM), Koc University, Istanbul 34450, Turkey; (E.U.); (G.N.); (N.C.)
- Department of Physiology, School of Medicine, Koc University, Istanbul 34450, Turkey
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Prokai L, Zaman K, Prokai-Tatrai K. Mass spectrometry-based retina proteomics. MASS SPECTROMETRY REVIEWS 2023; 42:1032-1062. [PMID: 35670041 PMCID: PMC9730434 DOI: 10.1002/mas.21786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 04/28/2022] [Accepted: 04/29/2022] [Indexed: 06/15/2023]
Abstract
A subfield of neuroproteomics, retina proteomics has experienced a transformative growth since its inception due to methodological advances in enabling chemical, biochemical, and molecular biology techniques. This review focuses on mass spectrometry's contributions to facilitate mammalian and avian retina proteomics to catalog and quantify retinal protein expressions, determine their posttranslational modifications, as well as its applications to study the proteome of the retina in the context of biology, health and diseases, and therapy developments.
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Affiliation(s)
- Laszlo Prokai
- Department of Pharmacology and Neuroscience, University of North Texas Health Science Center, Fort Worth, Texas, USA
| | - Khadiza Zaman
- Department of Pharmacology and Neuroscience, University of North Texas Health Science Center, Fort Worth, Texas, USA
| | - Katalin Prokai-Tatrai
- Department of Pharmacology and Neuroscience, University of North Texas Health Science Center, Fort Worth, Texas, USA
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Experimental Models to Study Epithelial-Mesenchymal Transition in Proliferative Vitreoretinopathy. Int J Mol Sci 2023; 24:ijms24054509. [PMID: 36901938 PMCID: PMC10003383 DOI: 10.3390/ijms24054509] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 02/22/2023] [Accepted: 02/24/2023] [Indexed: 03/03/2023] Open
Abstract
Proliferative vitreoretinal diseases (PVDs) encompass proliferative vitreoretinopathy (PVR), epiretinal membranes, and proliferative diabetic retinopathy. These vision-threatening diseases are characterized by the development of proliferative membranes above, within and/or below the retina following epithelial-mesenchymal transition (EMT) of the retinal pigment epithelium (RPE) and/or endothelial-mesenchymal transition of endothelial cells. As surgical peeling of PVD membranes remains the sole therapeutic option for patients, development of in vitro and in vivo models has become essential to better understand PVD pathogenesis and identify potential therapeutic targets. The in vitro models range from immortalized cell lines to human pluripotent stem-cell-derived RPE and primary cells subjected to various treatments to induce EMT and mimic PVD. In vivo PVR animal models using rabbit, mouse, rat, and swine have mainly been obtained through surgical means to mimic ocular trauma and retinal detachment, and through intravitreal injection of cells or enzymes to induce EMT and investigate cell proliferation and invasion. This review offers a comprehensive overview of the usefulness, advantages, and limitations of the current models available to investigate EMT in PVD.
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Saglam BS, Kanli A, Yanar S, Kasap M, Akpinar G. Investigation of the effect of meclofenamic acid on the proteome of LNCaP cells reveals changes in alternative polyadenylation and splicing machinery. MEDICAL ONCOLOGY (NORTHWOOD, LONDON, ENGLAND) 2022; 39:190. [PMID: 36071279 DOI: 10.1007/s12032-022-01795-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Accepted: 07/09/2022] [Indexed: 12/24/2022]
Abstract
Prostate cancer is the most common type of cancer among men, and there is still no definitively effective drug treatment. Thus, the search for novel drug agents that may be used for the effective treatment continues. Meclofenamic acid (MA), a non-steroidal anti-inflammatory drug, with anti-tumor effects in various types of cancers was used to investigate its effects on LNCaP cells, a prostate cancer cell line, at the proteome level. The cells were treated with 80 µM MA for 24 h and a comparative proteomic analysis was performed with their untreated control cells. Proteins were extracted from the cells and then were subjected to two-dimensional gel electrophoresis. Protein spots displaying changes in their regulation ratios for more than two-fold were excised from the gels and identified with MALDI-TOF/TOF mass spectrometry. Bioinformatics analysis of the differentially regulated proteins that we identified showed that they were all associated with and took part in related pathways. Glycolytic pathway, cytoskeletal formation, transport activity, protein metabolism, and most notably an mRNA processing pathway were affected by the MA treatment. In addition to presenting a detailed information for what is happening inside the cells upon MA treatment, the proteins affected by MA treatment hold the potential to be novel targets for prostate cancer treatment provided that further in vivo experiments are carried out.
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Affiliation(s)
- Busra Sahinoz Saglam
- Department of Medical Biology, Faculty of Medicine, Kocaeli University, İzmit, Kocaeli, Turkey
| | - Aylin Kanli
- Department of Medical Biology, Faculty of Medicine, Kocaeli University, İzmit, Kocaeli, Turkey.
| | - Sevinc Yanar
- Department of Medical Biology, Faculty of Medicine, Kocaeli University, İzmit, Kocaeli, Turkey
- Department of Histology and Embryology, Faculty of Medicine, Sakarya University, Serdivan, Sakarya, Turkey
| | - Murat Kasap
- Department of Medical Biology, Faculty of Medicine, Kocaeli University, İzmit, Kocaeli, Turkey
| | - Gurler Akpinar
- Department of Medical Biology, Faculty of Medicine, Kocaeli University, İzmit, Kocaeli, Turkey
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Suo L, Dai W, Chen X, Qin X, Li G, Song S, Zhang D, Zhang C. Proteomics analysis of N-methyl-d-aspartate-induced cell death in retinal and optic nerves. J Proteomics 2021; 252:104427. [PMID: 34781030 DOI: 10.1016/j.jprot.2021.104427] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2021] [Revised: 11/06/2021] [Accepted: 11/08/2021] [Indexed: 12/18/2022]
Abstract
This study aimed to comprehensively understand the proteomic characteristics and modulation of the neural microenvironment with N-methyl-d-aspartate (NMDA)-induced neuronal degeneration in the retina and optic nerve at 12 h after intravitreal injection of 40 nmol NMDA. Male Sprague-Dawley rats were sacrificed at 12 h after intravitreal injection of 40 nmol NMDA. PBS-injected eyes served as controls. The key cell death-linked proteins from the retina and optic nerve tissues were assessed by a mass spectrometry-based label-free approach. In proteomics analysis, we identified 3532 proteins in retinal tissues and 2593 proteins in optic nerve tissues. The ACSL3 (Q63151) and Prnp (P13852) proteins were upregulated in the NMDA-damaged retina and connected with ferroptosis. The Gabarapl2 (P60522) protein was upregulated in NMDA-damaged optic nerves and connected with autophagy. We performed parallel reaction monitoring (PRM) to validate the liquid chromatography-tandem mass spectrometry (LC-MS/MS) results. Data are available ProteomeXchange with identifiers PXD022466 (label-free quantification) and PXD022729 (PRM validation). SIGNIFICANCE: Excitotoxicity is one of the pathogeneses of various retinal disorders, including glaucoma, retinal ischemia-reperfusion and traumatic optic neuropathy. This study indicated that ferroptosis may be linked to pathological cell death in the retina with NMDA insult. Autophagy may be induced by NMDA overstimulation in both the optic nerve and retina. Regulating these types of death simultaneously may provide the maximum benefit for retinal disease therapy.
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Affiliation(s)
- Lingge Suo
- Department of Ophthalmology, Peking University Third Hospital, Beijing, China; Beijing Key Laboratory of Restoration of Damaged Ocular Nerve, Peking University Third Hospital, Beijing, China
| | - Wanwei Dai
- Department of Ophthalmology, Peking University Third Hospital, Beijing, China; Beijing Key Laboratory of Restoration of Damaged Ocular Nerve, Peking University Third Hospital, Beijing, China
| | - Xuhao Chen
- Department of Ophthalmology, Peking University Third Hospital, Beijing, China; Beijing Key Laboratory of Restoration of Damaged Ocular Nerve, Peking University Third Hospital, Beijing, China
| | - Xuejiao Qin
- Department of Ophthalmology, Shandong University Qilu Hospital, Shandong, China
| | - Guanlin Li
- Clinical Stem Cell Research Center, Peking University Third Hospital, Beijing, China
| | - Sijia Song
- Department of Ophthalmology, Peking University Third Hospital, Beijing, China; Beijing Key Laboratory of Restoration of Damaged Ocular Nerve, Peking University Third Hospital, Beijing, China
| | - Di Zhang
- Department of Ophthalmology, Peking University Third Hospital, Beijing, China; Beijing Key Laboratory of Restoration of Damaged Ocular Nerve, Peking University Third Hospital, Beijing, China
| | - Chun Zhang
- Department of Ophthalmology, Peking University Third Hospital, Beijing, China; Beijing Key Laboratory of Restoration of Damaged Ocular Nerve, Peking University Third Hospital, Beijing, China.
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