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Patrick AT, He W, Madu J, Sripathi SR, Choi S, Lee K, Samson FP, Powell FL, Bartoli M, Jee D, Gutsaeva DR, Jahng WJ. Mechanistic dissection of diabetic retinopathy using the protein-metabolite interactome. J Diabetes Metab Disord 2021; 19:829-848. [PMID: 33520806 DOI: 10.1007/s40200-020-00570-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 05/20/2020] [Accepted: 06/10/2020] [Indexed: 02/07/2023]
Abstract
Purpose The current study aims to determine the molecular mechanisms of diabetic retinopathy (DR) using the protein-protein interactome and metabolome map. We examined the protein network of novel biomarkers of DR for direct (physical) and indirect (functional) interactions using clinical target proteins in different models. Methods We used proteomic tools including 2-dimensional gel electrophoresis, mass spectrometry analysis, and database search for biomarker identification using in vivo murine and human model of diabetic retinopathy and in vitro model of oxidative stress. For the protein interactome and metabolome mapping, various bioinformatic tools that include STRING and OmicsNet were used. Results We uncovered new diabetic biomarkers including prohibitin (PHB), dynamin 1, microtubule-actin crosslinking factor 1, Toll-like receptor (TLR 7), complement activation, as well as hypothetical proteins that include a disintegrin and metalloproteinase (ADAM18), vimentin III, and calcium-binding C2 domain-containing phospholipid-binding switch (CAC2PBS) using a proteomic approach. Proteome networks of protein interactions with diabetic biomarkers were established using known DR-related proteome data. DR metabolites were interconnected to establish the metabolome map. Our results showed that mitochondrial protein interactions were changed during hyperglycemic conditions in the streptozotocin-treated murine model and diabetic human tissue. Conclusions Our interactome mapping suggests that mitochondrial dysfunction could be tightly linked to various phases of DR pathogenesis including altered visual cycle, cytoskeletal remodeling, altered lipid concentration, inflammation, PHB depletion, tubulin phosphorylation, and altered energy metabolism. The protein-metabolite interactions in the current network demonstrate the etiology of retinal degeneration and suggest the potential therapeutic approach to treat DR.
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Affiliation(s)
- Ambrose Teru Patrick
- Retina Proteomics Laboratory, Department of Petroleum Chemistry, American University of Nigeria, Yola, Nigeria
| | - Weilue He
- Department of Biomedical Engineering, Michigan Technological University, Houghton, MI USA
| | - Joshua Madu
- Retina Proteomics Laboratory, Department of Petroleum Chemistry, American University of Nigeria, Yola, Nigeria
| | - Srinivas R Sripathi
- Department of Ophthalmology, Wilmer Eye Institute, The Johns Hopkins University School of Medicine, Baltimore, MD USA
| | - Seulggie Choi
- Division of Vitreous and Retina, Department of Ophthalmology, College of Medicine, St. Vincent's Hospital, The Catholic University of Korea, Suwon, Korea
| | - Kook Lee
- Division of Vitreous and Retina, Department of Ophthalmology, College of Medicine, St. Vincent's Hospital, The Catholic University of Korea, Suwon, Korea
| | - Faith Pwaniyibo Samson
- Retina Proteomics Laboratory, Department of Petroleum Chemistry, American University of Nigeria, Yola, Nigeria
| | - Folami L Powell
- Department of Biochemistry and Molecular Biology, Augusta University, Augusta, GA USA
| | - Manuela Bartoli
- Department of Ophthalmology, Augusta University, Augusta, GA USA
| | - Donghyun Jee
- Division of Vitreous and Retina, Department of Ophthalmology, College of Medicine, St. Vincent's Hospital, The Catholic University of Korea, Suwon, Korea
| | - Diana R Gutsaeva
- Department of Ophthalmology, Augusta University, Augusta, GA USA
| | - Wan Jin Jahng
- Retina Proteomics Laboratory, Department of Petroleum Chemistry, American University of Nigeria, Yola, Nigeria
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Xu H, Pausch H, Venhoranta H, Rutkowska K, Wurmser C, Rieblinger B, Flisikowska T, Frishman D, Zwierzchowski L, Fries R, Andersson M, Kind A, Schnieke A, Flisikowski K. Maternal placenta modulates a deleterious fetal mutation†. Biol Reprod 2017; 97:249-257. [DOI: 10.1093/biolre/iox064] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Accepted: 06/23/2017] [Indexed: 12/13/2022] Open
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Cohen SS, Powers BR, Lerch-Gaggl A, Teng RJ, Konduri GG. Impaired cerebral angiogenesis in the fetal lamb model of persistent pulmonary hypertension. Int J Dev Neurosci 2014; 38:113-8. [PMID: 25172169 DOI: 10.1016/j.ijdevneu.2014.08.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Revised: 07/22/2014] [Accepted: 08/07/2014] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Persistent pulmonary hypertension of the newborn (PPHN) is associated with increased risk of neuro-developmental impairments. Whether relative fetal hypoxia during evolution of PPHN renders the fetal brain vulnerable to perinatal brain injury remains unclear. We hypothesized that in utero ductal constriction, which induces PPHN also impairs cerebral angiogenesis. METHODS Fetal lambs with PPHN induced by prenatal ligation of the ductus arteriosus were compared to gestation matched twin controls. Freshly collected or fixed brain specimens were analyzed by immunohistochemistry, Western blot analysis, and RT-PCR. RESULTS Cortical capillary density was decreased in PPHN lambs compared to controls (Glut-1, isolectin B-4 and factor VIII, n=6, p<0.05). Hypoxia inducible factor-1α (HIF-1α) and vascular endothelial growth factor (VEGF) protein levels were decreased in cortical cell lysates of PPHN lambs. PPHN increased angiopoetin-1 (Ang-1) and tyrosine-protein kinase receptor (Tie-2) protein expression while angiopoetin-2 (Ang-2) protein levels were decreased (n=6, p<0.05). PPHN did not change mRNA levels of these proteins significantly (n=6). CONCLUSIONS PPHN decreased cortical capillary density in fetal lamb brain. PPHN decreased the expression of proteins involved in angiogenesis. These findings suggest that PPHN is associated with impaired cortical angiogenesis.
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Affiliation(s)
- Susan S Cohen
- Department of Pediatrics, Children's Research Institute, Medical College of Wisconsin, Wauwatosa, WI 53226, USA.
| | - Bethany R Powers
- Department of Pediatrics, Children's Research Institute, Medical College of Wisconsin, Wauwatosa, WI 53226, USA
| | - Alexandra Lerch-Gaggl
- Department of Pathology, Division of Pediatric Pathology, Medical College of Wisconsin, Wauwatosa, WI 53226, USA
| | - Ru-Jeng Teng
- Department of Pediatrics, Children's Research Institute, Medical College of Wisconsin, Wauwatosa, WI 53226, USA
| | - Girija Ganesh Konduri
- Department of Pediatrics, Children's Research Institute, Medical College of Wisconsin, Wauwatosa, WI 53226, USA
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Venhoranta H, Li S, Salamon S, Flisikowska T, Andersson M, Switonski M, Kind A, Schnieke A, Flisikowski K. Non-CpG hypermethylation in placenta of mutation-induced intrauterine growth restricted bovine foetuses. Biochem Biophys Res Commun 2014; 444:391-4. [PMID: 24480436 DOI: 10.1016/j.bbrc.2014.01.071] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2014] [Accepted: 01/17/2014] [Indexed: 11/20/2022]
Abstract
The existence of non-CpG methylation in mammalian DNA has mainly been observed in embryonic stem cells, but its functional significance is uncertain. We found an age-dependent non-CpG hypermethylation in DMR at the 3' end of the MIMT1 in the placenta of intrauterine growth restricted foetuses in cattle. Data suggest that this DMR play a role in epigenetic regulation of the PEG3 domain.
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Affiliation(s)
- Heli Venhoranta
- Department of Production Animal Medicine, University of Helsinki, Saarentaus, Finland
| | - Shun Li
- Chair of Livestock Biotechnology, Technische Universität München, Freising, Germany
| | - Sylwia Salamon
- Department of Genetics and Animal Breeding, Poznan University of Life Sciences, Wolynska 33, 60-637 Poznan, Poland
| | - Tatiana Flisikowska
- Chair of Livestock Biotechnology, Technische Universität München, Freising, Germany
| | - Magnus Andersson
- Department of Production Animal Medicine, University of Helsinki, Saarentaus, Finland
| | - Marek Switonski
- Department of Genetics and Animal Breeding, Poznan University of Life Sciences, Wolynska 33, 60-637 Poznan, Poland
| | - Alexander Kind
- Chair of Livestock Biotechnology, Technische Universität München, Freising, Germany
| | - Angelika Schnieke
- Chair of Livestock Biotechnology, Technische Universität München, Freising, Germany
| | - Krzysztof Flisikowski
- Chair of Livestock Biotechnology, Technische Universität München, Freising, Germany.
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