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Fang T, Wang J, Sun S, Deng X, Xue M, Han F, Sun B, Chen L. JinLiDa granules alleviates cardiac hypertrophy and inflammation in diabetic cardiomyopathy by regulating TP53. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2024; 130:155659. [PMID: 38759318 DOI: 10.1016/j.phymed.2024.155659] [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: 11/26/2023] [Revised: 03/14/2024] [Accepted: 04/19/2024] [Indexed: 05/19/2024]
Abstract
BACKGROUND JinLiDa granules (JLD) is a traditional Chinese medicine (TCM) used to treat type 2 diabetes mellitus with Qi and Yin deficiency. Clinical evidence has shown that JLD can alleviate diabetic cardiomyopathy, but the exact mechanism is not yet clear. PURPOSE The purpose of this study was to examine the potential role and mechanism of JLD in the treatment of diabetic cardiomyopathy through network pharmacological analysis and basic experiments. METHODS The targets of JLD associated with diabetic cardiomyopathy were examined by network pharmacology. Protein interaction analysis was performed on the targets, and the associated pathways were searched by Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis. Diabetic mice were treated with low or high doses of JLD by gavage, and AC16 and H9C2 cardiomyocytes exposed to high-glucose conditions were treated with JLD. The analysis results were verified by various experimental techniques to examine molecular mechanisms. RESULTS Network pharmacological analysis revealed that JLD acted on the tumor suppressor p53 (TP53) during inflammation and fibrosis associated with diabetic cardiomyopathy. The results of basic experiments showed that after JLD treatment, ventricular wall thickening in diabetic mouse hearts was attenuated, cardiac hypertrophy and myocardial inflammation were alleviated, and the expression of cardiac hypertrophy- and inflammation-related factors in cardiomyocytes exposed to a high-glucose environment was decreased. Cardiomyocyte morphology also improved after JLD treatment. TP53 expression and the tumor necrosis factor (TNF) and transforming growth factor beta-1 (TGFβ1) signaling pathways were significantly altered, and inhibiting TP53 expression effectively alleviated the activation of the TNF and TGFβ1 signaling pathways under high glucose conditions. Overexpression of TP53 activated these signaling pathways. CONCLUSIONS JLD acted on TP53 to regulate the TNF and TGFβ1 signaling pathways, effectively alleviating cardiomyocyte hypertrophy and inflammation in high glucose and diabetic conditions. Our study provides a solid foundation for the future treatment of diabetic cardiomyopathy with JLD.
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Affiliation(s)
- Ting Fang
- NHC Key Laboratory of Hormones and Development, Tianjin Key Laboratory of Metabolic Diseases, Chu Hsien-I Memorial Hospital & Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin 300134, China
| | - Jingyi Wang
- NHC Key Laboratory of Hormones and Development, Tianjin Key Laboratory of Metabolic Diseases, Chu Hsien-I Memorial Hospital & Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin 300134, China
| | - Shengnan Sun
- NHC Key Laboratory of Hormones and Development, Tianjin Key Laboratory of Metabolic Diseases, Chu Hsien-I Memorial Hospital & Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin 300134, China
| | - Xiaoqing Deng
- NHC Key Laboratory of Hormones and Development, Tianjin Key Laboratory of Metabolic Diseases, Chu Hsien-I Memorial Hospital & Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin 300134, China
| | - Mei Xue
- Department of Endocrinology, Zhongnan Hospital of Wuhan University, 430071 Wuhan, China
| | - Fei Han
- NHC Key Laboratory of Hormones and Development, Tianjin Key Laboratory of Metabolic Diseases, Chu Hsien-I Memorial Hospital & Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin 300134, China
| | - Bei Sun
- NHC Key Laboratory of Hormones and Development, Tianjin Key Laboratory of Metabolic Diseases, Chu Hsien-I Memorial Hospital & Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin 300134, China.
| | - Liming Chen
- NHC Key Laboratory of Hormones and Development, Tianjin Key Laboratory of Metabolic Diseases, Chu Hsien-I Memorial Hospital & Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin 300134, China.
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Ying J, Wang P, Jin X, Luo L, Lai K, Li J. TGF-β1 Mediates the EndoMt in High Glucose-Treated Human Retinal Microvascular Endothelial Cells. Semin Ophthalmol 2024; 39:312-319. [PMID: 38192082 DOI: 10.1080/08820538.2023.2300806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 12/06/2023] [Indexed: 01/10/2024]
Abstract
The purpose of our study was to investigate the role of TGF-β1 in the endothelial-to-mesenchymal transition (EndoMT) and fibrosis in high glucose (HG)-treated human retinal microvascular endothelial cells (HRMECs). HRMECs were cultured not only under normal glucose (NG) conditions with or without TGF-β1, but also under HG conditions with or without the TGF-β1 inhibitor SB431542. The expression of TGF-β1 was detected by real time-PCR and enzyme-linked immunosorbent assay. Morphological changes and migration of the HRMECs were observed using electron microscopy and scratch-wound assay. Endothelial markers, such as CD31 and vascular endothelial (VE)-cadherin, and the acquisition of fibrotic markers, such as alpha smooth muscle actin (α-SMA) and fibroblast-specific protein-1 (FSP-1), were determined by immunofluorescent staining and western blot. The level of TGF-β1 was significantly upregulated in HG-treated HRMECs. And HG stimulation promoted obvious morphological changes and the migration ability in HRMECs. Our results also demonstrated increased expression of α-SMA and FSP-1, and decreased expression of CD31 and VE-cadherin, in HG-treated HRMECs. These EndoMT-related changes were promoted by TGF-β1 and abrogated by SB431542. The results of this study demonstrated the important role of TGF-β1 in HG-induced vitreoretinal fibrosis. EndoMT is likely to be involved in the associated effects.
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Affiliation(s)
- Jia Ying
- Department of Ophthalmology, Lishui Municipal Central Hospital, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui, PR China
| | - Peipei Wang
- Department of Stomatology, Lishui Municipal Central Hospital, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui, PR China
| | - Xiao Jin
- Department of Ophthalmology, Lishui Municipal Central Hospital, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui, PR China
| | - Li Luo
- Department of Ophthalmology, Lishui Municipal Central Hospital, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui, PR China
| | - Keshuang Lai
- Department of Ophthalmology, Yunhe County Hospital of traditional Chinese medicine, Lishui, PR China
| | - Jun Li
- Department of Ophthalmology, Lishui Municipal Central Hospital, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui, PR China
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Callan A, Jha S, Valdez L, Baldado L, Tsin A. TGF-β Signaling Pathways in the Development of Diabetic Retinopathy. Int J Mol Sci 2024; 25:3052. [PMID: 38474297 PMCID: PMC10932130 DOI: 10.3390/ijms25053052] [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: 01/23/2024] [Revised: 02/28/2024] [Accepted: 03/04/2024] [Indexed: 03/14/2024] Open
Abstract
Diabetic retinopathy (DR), a prevalent complication of diabetes mellitus affecting a significant portion of the global population, has long been viewed primarily as a microvascular disorder. However, emerging evidence suggests that it should be redefined as a neurovascular disease with multifaceted pathogenesis rooted in oxidative stress and advanced glycation end products. The transforming growth factor-β (TGF-β) signaling family has emerged as a major contributor to DR pathogenesis due to its pivotal role in retinal vascular homeostasis, endothelial cell barrier function, and pericyte differentiation. However, the precise roles of TGF-β signaling in DR remain incompletely understood, with conflicting reports on its impact in different stages of the disease. Additionally, the BMP subfamily within the TGF-β superfamily introduces further complexity, with BMPs exhibiting both pro- and anti-angiogenic properties. Furthermore, TGF-β signaling extends beyond the vascular realm, encompassing immune regulation, neuronal survival, and maintenance. The intricate interactions between TGF-β and reactive oxygen species (ROS), non-coding RNAs, and inflammatory mediators have been implicated in the pathogenesis of DR. This review delves into the complex web of signaling pathways orchestrated by the TGF-β superfamily and their involvement in DR. A comprehensive understanding of these pathways may hold the key to developing targeted therapies to halt or mitigate the progression of DR and its devastating consequences.
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Affiliation(s)
| | | | | | | | - Andrew Tsin
- School of Medicine, The University of Texas Rio Grande Valley, Edinburg, TX 78539, USA; (A.C.); (S.J.); (L.V.); (L.B.)
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Qin J, Tan Y, Han Y, Yu L, Liu S, Zhao S, Wan H, Qu S. Interplay Between TGF-β Signaling and MicroRNA in Diabetic Cardiomyopathy. Cardiovasc Drugs Ther 2023:10.1007/s10557-023-07532-2. [PMID: 38117422 DOI: 10.1007/s10557-023-07532-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/20/2023] [Indexed: 12/21/2023]
Abstract
In diabetic patients, concomitant cardiovascular disease is the main factor contributing to their morbidity and mortality. Diabetic cardiomyopathy (DCM) is a form of cardiovascular disease associated with diabetes that can result in heart failure. Transforming growth factor-β (TGF-β) isoforms play a crucial role in heart remodeling and repair and are elevated and activated in myocardial disorders. Alterations in certain microRNAs (miRNA) are closely related to diabetic cardiomyopathy. One or more miRNA molecules target the majority of TGF-β pathway components, and TGF-β directly or via SMADs controls miRNA synthesis. Based on these interactions, this review discusses potential cross-talk between TGF-β signaling and miRNA in DCM in order to investigate the creation of potential therapeutic targets.
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Affiliation(s)
- Jianning Qin
- Pathophysiology Department, Institute of Cardiovascular Disease, Key Laboratory for Arteriosclerology of Hunan Province, Hunan International Scientific and Technological Cooperation Base of Arteriosclerotic Disease, University of South China, Hongxiang Street, Hengyang, 421001, Hunan, China
| | - Yao Tan
- Pathophysiology Department, Institute of Cardiovascular Disease, Key Laboratory for Arteriosclerology of Hunan Province, Hunan International Scientific and Technological Cooperation Base of Arteriosclerotic Disease, University of South China, Hongxiang Street, Hengyang, 421001, Hunan, China
| | - Yang Han
- Pathophysiology Department, Institute of Cardiovascular Disease, Key Laboratory for Arteriosclerology of Hunan Province, Hunan International Scientific and Technological Cooperation Base of Arteriosclerotic Disease, University of South China, Hongxiang Street, Hengyang, 421001, Hunan, China
| | - Letian Yu
- Pathophysiology Department, Institute of Cardiovascular Disease, Key Laboratory for Arteriosclerology of Hunan Province, Hunan International Scientific and Technological Cooperation Base of Arteriosclerotic Disease, University of South China, Hongxiang Street, Hengyang, 421001, Hunan, China
| | - Shali Liu
- Pathophysiology Department, Institute of Cardiovascular Disease, Key Laboratory for Arteriosclerology of Hunan Province, Hunan International Scientific and Technological Cooperation Base of Arteriosclerotic Disease, University of South China, Hongxiang Street, Hengyang, 421001, Hunan, China
| | - Simin Zhao
- Pathophysiology Department, Institute of Cardiovascular Disease, Key Laboratory for Arteriosclerology of Hunan Province, Hunan International Scientific and Technological Cooperation Base of Arteriosclerotic Disease, University of South China, Hongxiang Street, Hengyang, 421001, Hunan, China
| | - Hengquan Wan
- Pathophysiology Department, Institute of Cardiovascular Disease, Key Laboratory for Arteriosclerology of Hunan Province, Hunan International Scientific and Technological Cooperation Base of Arteriosclerotic Disease, University of South China, Hongxiang Street, Hengyang, 421001, Hunan, China
| | - Shunlin Qu
- Pathophysiology Department, Institute of Cardiovascular Disease, Key Laboratory for Arteriosclerology of Hunan Province, Hunan International Scientific and Technological Cooperation Base of Arteriosclerotic Disease, University of South China, Hongxiang Street, Hengyang, 421001, Hunan, China.
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Zhang X, Luo Z, Li J, Lin Y, Li Y, Li W. Sestrin2 in diabetes and diabetic complications. Front Endocrinol (Lausanne) 2023; 14:1274686. [PMID: 37920252 PMCID: PMC10619741 DOI: 10.3389/fendo.2023.1274686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 10/03/2023] [Indexed: 11/04/2023] Open
Abstract
Diabetes is a global health problem which is accompanied with multi-systemic complications. It is of great significance to elucidate the pathogenesis and to identify novel therapies of diabetes and diabetic complications. Sestrin2, a stress-inducible protein, is primarily involved in cellular responses to various stresses. It plays critical roles in regulating a series of cellular events, such as oxidative stress, mitochondrial function and endoplasmic reticulum stress. Researches investigating the correlations between Sestrin2, diabetes and diabetic complications are increasing in recent years. This review incorporates recent findings, demonstrates the diverse functions and regulating mechanisms of Sestrin2, and discusses the potential roles of Sestrin2 in the pathogenesis of diabetes and diabetic complications, hoping to highlight a promising therapeutic direction.
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Affiliation(s)
- Xiaodan Zhang
- Department of Endocrinology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Zirui Luo
- The Second Clinical Medicine School, Guangzhou Medical University, Guangzhou, China
| | - Jiahong Li
- The Second Clinical Medicine School, Guangzhou Medical University, Guangzhou, China
| | - Yaxuan Lin
- The Second Clinical Medicine School, Guangzhou Medical University, Guangzhou, China
| | - Yu Li
- Department of Endocrinology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Wangen Li
- Department of Endocrinology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
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Piekarska K, Bonowicz K, Grzanka A, Jaworski ŁM, Reiter RJ, Slominski AT, Steinbrink K, Kleszczyński K, Gagat M. Melatonin and TGF-β-Mediated Release of Extracellular Vesicles. Metabolites 2023; 13:metabo13040575. [PMID: 37110233 PMCID: PMC10142249 DOI: 10.3390/metabo13040575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 04/12/2023] [Accepted: 04/17/2023] [Indexed: 04/29/2023] Open
Abstract
The immune system, unlike other systems, must be flexible and able to "adapt" to fully cope with lurking dangers. The transition from intracorporeal balance to homeostasis disruption is associated with activation of inflammatory signaling pathways, which causes modulation of the immunology response. Chemotactic cytokines, signaling molecules, and extracellular vesicles act as critical mediators of inflammation and participate in intercellular communication, conditioning the immune system's proper response. Among the well-known cytokines allowing for the development and proper functioning of the immune system by mediating cell survival and cell-death-inducing signaling, the tumor necrosis factor α (TNF-α) and transforming growth factor β (TGF-β) are noteworthy. The high bloodstream concentration of those pleiotropic cytokines can be characterized by anti- and pro-inflammatory activity, considering the powerful anti-inflammatory and anti-oxidative stress capabilities of TGF-β known from the literature. Together with the chemokines, the immune system response is also influenced by biologically active chemicals, such as melatonin. The enhanced cellular communication shows the relationship between the TGF-β signaling pathway and the extracellular vesicles (EVs) secreted under the influence of melatonin. This review outlines the findings on melatonin activity on TGF-β-dependent inflammatory response regulation in cell-to-cell communication leading to secretion of the different EV populations.
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Affiliation(s)
- Klaudia Piekarska
- Department of Histology and Embryology, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Torun, 85-092 Bydgoszcz, Poland
| | - Klaudia Bonowicz
- Department of Histology and Embryology, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Torun, 85-092 Bydgoszcz, Poland
| | - Alina Grzanka
- Department of Histology and Embryology, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Torun, 85-092 Bydgoszcz, Poland
| | - Łukasz M Jaworski
- Department of Histology and Embryology, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Torun, 85-092 Bydgoszcz, Poland
| | - Russel J Reiter
- Department of Cell Systems and Anatomy, UT Health, Long School of Medicine, San Antonio, TX 78229, USA
| | - Andrzej T Slominski
- Department of Dermatology, Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, AL 35294, USA
- Pathology and Laboratory Medicine Service, VA Medical Center, Birmingham, AL 35294, USA
| | - Kerstin Steinbrink
- Department of Dermatology, University of Münster, Von-Esmarch-Str. 58, 48149 Münster, Germany
| | - Konrad Kleszczyński
- Department of Dermatology, University of Münster, Von-Esmarch-Str. 58, 48149 Münster, Germany
| | - Maciej Gagat
- Department of Histology and Embryology, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Torun, 85-092 Bydgoszcz, Poland
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Bushra S, Al-Sadeq DW, Bari R, Sahara A, Fadel A, Rizk N. Adiponectin Ameliorates Hyperglycemia-Induced Retinal Endothelial Dysfunction, Highlighting Pathways, Regulators, and Networks. J Inflamm Res 2022; 15:3135-3166. [PMID: 35662872 PMCID: PMC9156523 DOI: 10.2147/jir.s358594] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Accepted: 05/04/2022] [Indexed: 12/25/2022] Open
Abstract
Background The pathophysiology of diabetic retinopathy (DR) is multifaced. A low level of circulating adiponectin (APN) in type 2 diabetes is associated with microvasculature complications, and its role in the evolution of DR is complex. Aim This study is designed to explore the potential impact of APN in the pathogenesis of DR, linking the changes in cellular and biological processes with the pathways, networks, and regulators involved in its actions. Methods Human microvascular retinal endothelial cells (HMRECs) were exposed to 30mM glucose (HG) and treated with globular adiponectin (30μg/mL) for 24 hours. The cells were evaluated for reactive oxidative stress (ROS) and apoptosis. RT-PCR profile arrays were utilized to evaluate the profile of genes involved in endothelial functions, angiogenesis, extracellular matrix, and adhesion molecules for hyperglycemic HMRECs treated with adiponectin. In addition, the barrier function, leukocyte migration, and angiogenesis were evaluated. The differential expressed genes (DEGs) were outlined, and bioinformatic analysis was applied. Results Adiponectin suppresses ROS production and apoptosis in HMRECs under HG conditions. Adiponectin improved migration and barrier functions in hyperglycemic cells. The bioinformatic analysis highlighted that the signaling pathways of integrin, HMGB1, and p38 AMPK, are mainly involved in the actions of APN on HMRECs. APN significantly affects molecular functions, including the adhesion of cells, chemotaxis, migration of WBCs, and angiogenesis. STAT3, NFKB, IKBKB, and mir-8 are the top upstream regulators, which affect the expressions of the genes of the data set, while TNF and TGFB1 are the top regulators. Conclusion Adiponectin significantly counteracts hyperglycemia at various cellular and molecular levels, reducing its impact on the pathophysiological progression towards DR in vitro using HMRECs. Adiponectin ameliorates inflammatory response, oxidative stress, and endothelial barrier dysfunction using a causal network of NFBk complex, TNF, and HMGB1 and integrin pathways.
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Affiliation(s)
- Sumbul Bushra
- Department of Biomedical Sciences, College of Health Sciences, QU-Health, Qatar University, Doha, Qatar
| | - Duaa W Al-Sadeq
- Department of Biomedical Sciences, College of Health Sciences, QU-Health, Qatar University, Doha, Qatar
| | - Redwana Bari
- Department of Biomedical Sciences, College of Health Sciences, QU-Health, Qatar University, Doha, Qatar
| | - Afifah Sahara
- Department of Biomedical Sciences, College of Health Sciences, QU-Health, Qatar University, Doha, Qatar
| | - Amina Fadel
- Department of Biomedical Sciences, College of Health Sciences, QU-Health, Qatar University, Doha, Qatar
| | - Nasser Rizk
- Department of Biomedical Sciences, College of Health Sciences, QU-Health, Qatar University, Doha, Qatar
- Biomedical Research Center (BRC), Qatar University, Doha, Qatar
- Correspondence: Nasser Rizk, Department of Biomedical Sciences, College of Health Sciences, QU-Health, Qatar University, P.O. Box 2713, Doha, Qatar, Tel +974-4403-4786, Email
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Lokman Hakim NYDB, Noble S, Thomas NV, Geegana Gamage BS, Maxwell GK, Govindasamy V, Then KY, Das AK, Cheong SK. Genetic Modification as a New Approach to Ameliorate the Therapeutic Efficacy of Stem Cells in Diabetic Retinopathy. Eur J Ophthalmol 2022; 32:11206721211073430. [PMID: 35037488 DOI: 10.1177/11206721211073430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Over the last decades, the strategy of using stem cells has gained a lot of attention in treating many diseases. Recently, DR was identified as one of the common complications experienced by diabetic patients around the world. The current treatment strategy needs to be addressed since the active progression of DR may lead to permanent blindness. Interestingly, varieties of stem cells have emerged to optimize the therapeutic effects. It is also known that stem cells possess multilineage properties and are capable of differentiating, expanding in vitro and undergoing genetic modification. Moreover, modified stem cells have shown to be an ideal resource to prevent the degenerative disease and exhibit promising effects in conferring the migratory, anti-apoptotic, anti-inflammatory and provide better homing for cells into the damaged tissue or organ as well promoting healing properties. Therefore, the understanding of the functional properties of the stem cells may provide the comprehensive guidance to understand the manipulation of stem cells making them useful for long-term therapeutic applications. Hence in this review the potential use and current challenges of genetically modified stem cells to treat DR will be discussed along with its future perspectives.
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Affiliation(s)
| | - Steven Noble
- CryoCord Sdn Bhd, Bio-X Centre, Cyberjaya, Selangor, Malaysia
| | | | | | | | | | - Kong-Yong Then
- CryoCord Sdn Bhd, Bio-X Centre, Cyberjaya, Selangor, Malaysia
- Brighton Healthcare (Bio-X Healthcare Sdn Bhd), Bio-X Centre, Cyberjaya, Selangor, Malaysia
| | - Anjan Kumar Das
- Department of Surgery, 483702IQ City Medical College, Durgapur, West Bengal, India
| | - Soon-Keng Cheong
- Faculty of Medicine & Health Sciences, 65287Universiti Tunku Abdul Rahman (UTAR), Kajang, Selangor, Malaysia
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Abstract
Epidemiological data predict a dramatic increase in the prevalence of diabetes and of diabetic retinopathy (DR) - the most common complication of diabetes-for which however we do not have so far effective tools for prevention and treatment. Since hypovitaminosis D is very frequent in patients with diabetes and vitamin D (VD) has vascular protective properties, several studies have addressed the association of VD deficiency with DR and its severity and progression, whereas the effects of VD supplementation on its natural history are largely unknown. Here we review the available evidence that supports the possible protective role of VD in DR and suggests to determine the VD levels in DR patients calling for a definitive randomized clinical trial to ascertain whether VD supplementation could protect against DR.
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Affiliation(s)
- Francesco Tecilazich
- Institute of Endocrine and Metabolic Sciences, San Raffaele Vita Salute University and IRCCS San Raffaele Hospital, Milan, Italy
| | - Anna Maria Formenti
- Institute of Endocrine and Metabolic Sciences, San Raffaele Vita Salute University and IRCCS San Raffaele Hospital, Milan, Italy
| | - Andrea Giustina
- Institute of Endocrine and Metabolic Sciences, San Raffaele Vita Salute University and IRCCS San Raffaele Hospital, Milan, Italy.
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Ocular TGF- β, Matrix Metalloproteinases, and TIMP-1 Increase with the Development and Progression of Diabetic Retinopathy in Type 2 Diabetes Mellitus. Mediators Inflamm 2021; 2021:9811361. [PMID: 34257518 PMCID: PMC8257377 DOI: 10.1155/2021/9811361] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 06/04/2021] [Indexed: 01/20/2023] Open
Abstract
Diabetic retinopathy (DR) is a sight-threatening late complication of diabetes mellitus (DM). Even though its pathophysiology has not been fully elucidated, several studies suggested a role for transforming growth factor- (TGF-) β, matrix metalloproteinases (MMPs), and tissue inhibitors of matrix metalloproteinase (TIMP) in the onset and progression of the disease. Consequently, the aim of this study was to analyze the concentrations of TGF-β1, TGF-β2, TGF-β3, MMP-3, MMP-9, and TIMP-1 in patients with different stages of DR in order to identify stage-specific changes in their concentrations during the progression of the disease. Serum and aqueous humor (AH) samples were collected during intraocular surgery, and eyes were classified into the following groups: healthy controls (n = 17), diabetic patients with non-apparent DR (n = 23), mild/moderate nonproliferative DR (NPDR) (n = 13), and advanced NPDR/proliferative DR (PDR) without vitreal hemorrhage (n = 14). None of the patients had been under anti-VEGF or laser treatment within six months prior to surgery. In the AH, TGF-β1 levels increased in advanced NPDR/PDR by a factor of 5.5 compared to the control group. Similarly, an increase in MMP-3 and TIMP-1 levels in the AH was evident in the later stages of DR, corresponding to a 7.7- and 2.4-fold increase compared to the control group, respectively, whereas serum levels of the studied proteins remained similar. In conclusion, increased concentrations of TGF-β1, MMP-3, and TIMP-1 in the AH, but not in the serum, in advanced NPDR/PDR indicate that the intraocular regulation for these cytokines is independent of the systemic one and suggest their involvement in the progression of DR.
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Bonfiglio V, Platania CBM, Lazzara F, Conti F, Pizzo C, Reibaldi M, Russo A, Fallico M, Ortisi E, Pignatelli F, Longo A, Avitabile T, Drago F, Bucolo C. TGF-β Serum Levels in Diabetic Retinopathy Patients and the Role of Anti-VEGF Therapy. Int J Mol Sci 2020; 21:ijms21249558. [PMID: 33334029 PMCID: PMC7765505 DOI: 10.3390/ijms21249558] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 12/04/2020] [Accepted: 12/12/2020] [Indexed: 12/16/2022] Open
Abstract
Transforming growth factor β1 (TGFβ1) is a proinflammatory cytokine that has been implicated in the pathogenesis of diabetic retinopathy (DR), particularly in the late phase of disease. The aim of the present study was to validate serum TGFβ1 as a diagnostic and prognostic biomarker of DR stages. Thirty-eight subjects were enrolled and, after diagnosis and evaluation of inclusion and exclusion criteria, were assigned to six groups: (1) healthy age-matched control, (2) diabetic without DR, (3) non-proliferative diabetic retinopathy (NPDR) naïve to treatment, (4) NPDR treated with intravitreal (IVT) aflibercept, (5) proliferative diabetic retinopathy (PDR) naïve to treatment and (6) PDR treated with IVT aflibercept. Serum levels of vascular endothelial growth factor A (VEGF-A), placental growth factor (PlGF) and TGFβ1 were measured by means of enzyme-linked immunosorbent assay (ELISA). Foveal macular thickness (FMT) in enrolled subjects was evaluated by means of structural-optical coherence tomography (S-OCT). VEGF-A serum levels decreased in NPDR and PDR patients treated with aflibercept, compared to naïve DR patients. PlGF serum levels were modulated only in aflibercept-treated NPDR patients. Particularly, TGFβ1 serum levels were predictive of disease progression from NPDR to PDR. A Multivariate ANOVA analysis (M-ANOVA) was also carried out to assess the effects of fixed factors on glycated hemoglobin (HbA1c) levels, TGFβ1, and diabetes duration. In conclusion, our data have strengthened the hypothesis that TGFβ1 would be a biomarker and pharmacological target of diabetic retinopathy.
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Affiliation(s)
- Vincenza Bonfiglio
- Department of Experimental Biomedicine and Clinical Neuroscience, Ophthalmology Section, University of Palermo, 90133 Palermo, Italy;
| | - Chiara Bianca Maria Platania
- Department of Biomedical and Biotechnological Sciences, School of Medicine, University of Catania, 95123 Catania, Italy; (C.B.M.P.); (F.L.); (F.C.); (F.D.)
| | - Francesca Lazzara
- Department of Biomedical and Biotechnological Sciences, School of Medicine, University of Catania, 95123 Catania, Italy; (C.B.M.P.); (F.L.); (F.C.); (F.D.)
| | - Federica Conti
- Department of Biomedical and Biotechnological Sciences, School of Medicine, University of Catania, 95123 Catania, Italy; (C.B.M.P.); (F.L.); (F.C.); (F.D.)
| | - Corrado Pizzo
- Department of Ophthalmology, University of Catania, 95123 Catania, Italy; (C.P.); (A.R.); (M.F.); (E.O.); (A.L.); (T.A.)
| | - Michele Reibaldi
- Department of Surgical Science, Eye Clinic, University of Torino, 10124 Torino, Italy;
| | - Andrea Russo
- Department of Ophthalmology, University of Catania, 95123 Catania, Italy; (C.P.); (A.R.); (M.F.); (E.O.); (A.L.); (T.A.)
| | - Matteo Fallico
- Department of Ophthalmology, University of Catania, 95123 Catania, Italy; (C.P.); (A.R.); (M.F.); (E.O.); (A.L.); (T.A.)
| | - Elina Ortisi
- Department of Ophthalmology, University of Catania, 95123 Catania, Italy; (C.P.); (A.R.); (M.F.); (E.O.); (A.L.); (T.A.)
| | | | - Antonio Longo
- Department of Ophthalmology, University of Catania, 95123 Catania, Italy; (C.P.); (A.R.); (M.F.); (E.O.); (A.L.); (T.A.)
| | - Teresio Avitabile
- Department of Ophthalmology, University of Catania, 95123 Catania, Italy; (C.P.); (A.R.); (M.F.); (E.O.); (A.L.); (T.A.)
| | - Filippo Drago
- Department of Biomedical and Biotechnological Sciences, School of Medicine, University of Catania, 95123 Catania, Italy; (C.B.M.P.); (F.L.); (F.C.); (F.D.)
- Center for Research in Ocular Pharmacology-CERFO, University of Catania, 95123 Catania, Italy
| | - Claudio Bucolo
- Department of Biomedical and Biotechnological Sciences, School of Medicine, University of Catania, 95123 Catania, Italy; (C.B.M.P.); (F.L.); (F.C.); (F.D.)
- Center for Research in Ocular Pharmacology-CERFO, University of Catania, 95123 Catania, Italy
- Correspondence:
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12
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Tecilazich F, Phan TA, Simeoni F, Scotti GM, Dagher Z, Lorenzi M. Patrolling Monocytes Are Recruited and Activated by Diabetes to Protect Retinal Microvessels. Diabetes 2020; 69:2709-2719. [PMID: 32907815 PMCID: PMC7679768 DOI: 10.2337/db19-1043] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Accepted: 08/28/2020] [Indexed: 11/13/2022]
Abstract
In diabetes there is a long latency between the onset of hyperglycemia and the appearance of structural microangiopathy. Because Ly6Clow patrolling monocytes (PMo) behave as housekeepers of the vasculature, we tested whether PMo protect microvessels against diabetes. We found that in wild-type mice, diabetes reduced PMo in the general circulation but increased by fourfold the absolute number of PMo adherent to retinal vessels (leukostasis). Conversely, in diabetic NR4A1-/- mice, a model of absence of PMo, there was no increase in leukostasis, and at 6 months of diabetes, the number of retinal acellular capillaries almost doubled compared with diabetic wild-type mice. Circulating PMo showed gene expression changes indicative of enhanced migratory, vasculoprotective, and housekeeping activities, as well as profound suppression of genes related to inflammation and apoptosis. Promigratory CXCR4 was no longer upregulated at longer duration when retinal acellular capillaries begin to increase. Thus, after a short diabetes duration, PMo are the cells preferentially recruited to the retinal vessels and protect vessels from diabetic damage. These observations support the need for reinterpretation of the functional meaning of leukostasis in diabetes and document within the natural history of diabetic retinopathy processes of protection and repair that can provide novel paradigms for prevention.
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Affiliation(s)
- Francesco Tecilazich
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Boston, MA
- Department of Ophthalmology, Harvard Medical School, Boston, MA
- Istituto di Ricovero e Cura a Carattere Scientifico Burlo Garofalo, University of Trieste, Trieste, Italy
| | - Toan A Phan
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Boston, MA
| | - Fabio Simeoni
- Center for Translational Genomics and Bioinformatics, Istituto di Ricovero e Cura a Carattere Scientifico San Raffaele, Milan, Italy
| | - Giulia Maria Scotti
- Center for Translational Genomics and Bioinformatics, Istituto di Ricovero e Cura a Carattere Scientifico San Raffaele, Milan, Italy
| | - Zeina Dagher
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Boston, MA
- Department of Ophthalmology, Harvard Medical School, Boston, MA
| | - Mara Lorenzi
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Boston, MA
- Department of Ophthalmology, Harvard Medical School, Boston, MA
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13
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Pericyte-Endothelial Interactions in the Retinal Microvasculature. Int J Mol Sci 2020; 21:ijms21197413. [PMID: 33049983 PMCID: PMC7582747 DOI: 10.3390/ijms21197413] [Citation(s) in RCA: 96] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 09/25/2020] [Accepted: 09/30/2020] [Indexed: 12/12/2022] Open
Abstract
Retinal microvasculature is crucial for the visual function of the neural retina. Pericytes and endothelial cells (ECs) are the two main cellular constituents in the retinal microvessels. Formation, maturation, and stabilization of the micro-vasculatures require pericyte-endothelial interactions, which are perturbed in many retinal vascular disorders, such as retinopathy of prematurity, retinal vein occlusion, and diabetic retinopathy. Understanding the cellular and molecular mechanisms of pericyte-endothelial interaction and perturbation can facilitate the design of therapeutic intervention for the prevention and treatment of retinal vascular disorders. Pericyte-endothelial interactions are indispensable for the integrity and functionality of retinal neurovascular unit (NVU), including vascular cells, retinal neurons, and glial cells. The essential autocrine and paracrine signaling pathways, such as Vascular endothelial growth factor (VEGF), Platelet-derived growth factor subunit B (PDGFB), Notch, Angipointein, Norrin, and Transforming growth factor-beta (TGF-β), have been well characterized for the regulation of pericyte-endothelial interactions in the neo-vessel formation processes (vasculogenesis and angiogenesis) during embryonic development. They also play a vital role in stabilizing and remodeling mature vasculature under pathological conditions. Awry signals, aberrant metabolisms, and pathological conditions, such as oxidative stress and inflammation, can disrupt the communication between pericytes and endothelial cells, thereby resulting in the breakdown of the blood-retinal barrier (BRB) and other microangiopathies. The emerging evidence supports extracellular exosomes' roles in the (mis)communications between the two cell types. This review summarizes the essential knowledge and updates about new advancements in pericyte-EC interaction and communication, emphasizing the retinal microvasculature.
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Antioxidant Effects and Mechanisms of Medicinal Plants and Their Bioactive Compounds for the Prevention and Treatment of Type 2 Diabetes: An Updated Review. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:1356893. [PMID: 32148647 PMCID: PMC7042557 DOI: 10.1155/2020/1356893] [Citation(s) in RCA: 96] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 12/31/2019] [Accepted: 01/16/2020] [Indexed: 12/14/2022]
Abstract
Diabetes mellitus is a metabolic disorder that majorly affects the endocrine gland, and it is symbolized by hyperglycemia and glucose intolerance owing to deficient insulin secretory responses and beta cell dysfunction. This ailment affects as many as 451 million people worldwide, and it is also one of the leading causes of death. In spite of the immense advances made in the development of orthodox antidiabetic drugs, these drugs are often considered not successful for the management and treatment of T2DM due to the myriad side effects associated with them. Thus, the exploration of medicinal herbs and natural products as therapeutic sources for the treatment of T2DM is promoted because they have little or no side effects. Bioactive molecules isolated from natural sources have been proven to lower blood glucose levels via regulating one or more of the following mechanisms: improvement of beta cell function, insulin resistance, glucose (re)absorption, and glucagon-like peptide-1 homeostasis. In recent times, the mechanisms of action of different bioactive molecules with antidiabetic properties and phytochemistry are gaining a lot of attention in the area of drug discovery. This review article presents an update of the findings from clinical research into medicinal plant therapy for T2DM.
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15
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Santos-Bezerra DP, Santos AS, Guimarães GC, Admoni SN, Perez RV, Machado CG, Pelaes TS, Passarelli M, Machado UF, Queiroz MS, da Silva MER, Correa-Giannella ML. Micro-RNAs 518d-3p and 618 Are Upregulated in Individuals With Type 1 Diabetes With Multiple Microvascular Complications. Front Endocrinol (Lausanne) 2019; 10:385. [PMID: 31249556 PMCID: PMC6582662 DOI: 10.3389/fendo.2019.00385] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Accepted: 05/29/2019] [Indexed: 01/21/2023] Open
Abstract
Objective: To compare the serum micro-RNAs (miRNAs) profile of individuals with type 1 diabetes without microvascular complications vs. those with multiple severe microvascular complications, in order to identify epigenetically modulated pathways in these two groups of individuals. Research Design and Methods: A total of 10 subjects were selected among individuals followed in the Diabetes Outpatient Clinic and sorted according to the absence or presence of all microvascular complications. Samples from these participants were used for evaluation of serum miRNA expression profile employing a qRT-PCR assay with hydrolysis probes based on the Taqman Low Density Arrays (TLDA) system. The top six most differentially expressed miRNAs between the aforementioned groups were validated by qRT-PCR in additional 47 type 1 diabetes individuals sorted according to the absence or presence of all microvascular complications and matched for age, sex, degree of metabolic control, diabetes duration, and age at diagnosis. Results: Twenty one out of three hundred and seventy seven miRNAs were upregulated in the group of individuals with all microvascular complications vs. the group without complications. The following miRs were validated: 518-3p, 34a-5p, 126-5p, 425-5p, 618, and 139-5p and logistic regression analyses showed that miRNA-518-3p and miRNA-618 were positively associated with multiple microvascular complications after adjustment for age, sex, diabetes duration, HbA1c and use of statin, angiotensin-converting enzyme inhibitors and amlodipine. Conclusions: In this cohort of type 1 diabetes individuals, serum miR-518d-3p and miR-618 were upregulated in those with diabetes kidney disease, diabetes retinopathy, peripheral neuropathy, and cardiovascular autonomic neuropathy in comparison to individuals with no microvascular complications.
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Affiliation(s)
- Daniele P. Santos-Bezerra
- Laboratório de Carboidratos e Radioimunoensaio, LIM-18, Hospital das Clinicas HCFMUSP, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Aritania S. Santos
- Laboratório de Carboidratos e Radioimunoensaio, LIM-18, Hospital das Clinicas HCFMUSP, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Gabriel C. Guimarães
- Laboratório de Carboidratos e Radioimunoensaio, LIM-18, Hospital das Clinicas HCFMUSP, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Sharon N. Admoni
- Laboratório de Carboidratos e Radioimunoensaio, LIM-18, Hospital das Clinicas HCFMUSP, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Ricardo V. Perez
- Laboratório de Carboidratos e Radioimunoensaio, LIM-18, Hospital das Clinicas HCFMUSP, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Cleide G. Machado
- Divisão de Oftalmologia do Hospital das Clinicas, HCFMUSP, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Tatiana S. Pelaes
- Laboratório de Carboidratos e Radioimunoensaio, LIM-18, Hospital das Clinicas HCFMUSP, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Marisa Passarelli
- Laboratório de Lipides, LIM-10, Hospital das Clinicas HCFMUSP, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
- Programa de Pós-Graduação em Medicina, Universidade Nove de Julho (UNINOVE), São Paulo, Brazil
| | - Ubiratan F. Machado
- Departamento de Fisiologia e Biofisica, Instituto de Ciencias Biomedicas, Universidade de São Paulo, São Paulo, Brazil
| | - Marcia S. Queiroz
- Divisão de Endocrinologia do Hospital das Clinicas, HCFMUSP, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Maria Elizabeth R. da Silva
- Laboratório de Carboidratos e Radioimunoensaio, LIM-18, Hospital das Clinicas HCFMUSP, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Maria Lucia Correa-Giannella
- Laboratório de Carboidratos e Radioimunoensaio, LIM-18, Hospital das Clinicas HCFMUSP, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
- Programa de Pós-Graduação em Medicina, Universidade Nove de Julho (UNINOVE), São Paulo, Brazil
- *Correspondence: Maria Lucia Correa-Giannella
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Tosi GM, Neri G, Caldi E, Fusco F, Bacci T, Tarantello A, Nuti E, Marigliani D, Baiocchi S, Traversi C, Barbarino M, Eandi CM, Parolini B, Mundo L, Santucci A, Orlandini M, Galvagni F. TGF-β concentrations and activity are down-regulated in the aqueous humor of patients with neovascular age-related macular degeneration. Sci Rep 2018; 8:8053. [PMID: 29795291 PMCID: PMC5966430 DOI: 10.1038/s41598-018-26442-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Accepted: 05/11/2018] [Indexed: 01/21/2023] Open
Abstract
Controversy still exists regarding the role of the TGF-β in neovascular age-related macular degeneration (nAMD), a major cause of severe visual loss in the elderly in developed countries. Here, we measured the concentrations of active TGF-β1, TGF-β2, and TGF-β3 by ELISA in the aqueous humor of 20 patients affected by nAMD, who received 3 consecutive monthly intravitreal injections of anti-VEGF-A antibody. Samples were collected at baseline (before the first injection), month 1 (before the second injection), and month 2 (before the third injection). The same samples were used in a luciferase-based reporter assay to test the TGF-β pathway activation. Active TGF-β1 concentrations in the aqueous humor were below the minimum detectable dose. Active TGF-β2 concentrations were significantly lower at baseline and at month 1, compared to controls. No significant differences in active TGF-β3 concentration were found among the sample groups. Moreover, TGF-β pathway activation was significantly lower at baseline compared to controls. Our data corroborate an anti-angiogenic role for TGF-β2 in nAMD. This should be considered from the perspective of a therapy using TGF-β inhibitors.
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Affiliation(s)
- Gian Marco Tosi
- University of Siena, Ophthalmology Unit of the Department of Medicine, Surgery and Neuroscience, Siena, 53100, Italy
| | - Giovanni Neri
- University of Siena, Ophthalmology Unit of the Department of Medicine, Surgery and Neuroscience, Siena, 53100, Italy
| | - Elena Caldi
- University of Siena, Department of Biotechnology, Chemistry and Pharmacy, Siena, 53100, Italy
| | - Fiorella Fusco
- University of Siena, Ophthalmology Unit of the Department of Medicine, Surgery and Neuroscience, Siena, 53100, Italy
| | - Tommaso Bacci
- University of Siena, Ophthalmology Unit of the Department of Medicine, Surgery and Neuroscience, Siena, 53100, Italy
| | - Antonio Tarantello
- University of Siena, Ophthalmology Unit of the Department of Medicine, Surgery and Neuroscience, Siena, 53100, Italy
| | - Elisabetta Nuti
- University of Siena, Ophthalmology Unit of the Department of Medicine, Surgery and Neuroscience, Siena, 53100, Italy
| | - Davide Marigliani
- University of Siena, Ophthalmology Unit of the Department of Medicine, Surgery and Neuroscience, Siena, 53100, Italy
| | - Stefano Baiocchi
- University of Siena, Ophthalmology Unit of the Department of Medicine, Surgery and Neuroscience, Siena, 53100, Italy
| | - Claudio Traversi
- University of Siena, Ophthalmology Unit of the Department of Medicine, Surgery and Neuroscience, Siena, 53100, Italy
| | - Marcella Barbarino
- University of Siena, Department of Medicine, Surgery and Neuroscience, Siena, 53100, Italy
| | - Chiara M Eandi
- University of Turin, Department of Surgical Science, Turin, 10124, Italy
| | | | - Lucia Mundo
- University of Siena, Department of Medical Biotechnology, Siena, 53100, Italy
| | - Annalisa Santucci
- University of Siena, Department of Biotechnology, Chemistry and Pharmacy, Siena, 53100, Italy
| | - Maurizio Orlandini
- University of Siena, Department of Biotechnology, Chemistry and Pharmacy, Siena, 53100, Italy.
| | - Federico Galvagni
- University of Siena, Department of Biotechnology, Chemistry and Pharmacy, Siena, 53100, Italy.
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Biswas S, Thomas AA, Chakrabarti S. LncRNAs: Proverbial Genomic "Junk" or Key Epigenetic Regulators During Cardiac Fibrosis in Diabetes? Front Cardiovasc Med 2018; 5:28. [PMID: 29670886 PMCID: PMC5893820 DOI: 10.3389/fcvm.2018.00028] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Accepted: 03/15/2018] [Indexed: 12/24/2022] Open
Abstract
Long non-coding RNAs (lncRNAs) are critical regulators in a multitude of biological processes. Recent evidences demonstrate potential pathogenetic implications of lncRNAs in diabetic cardiomyopathy (DCM); however, the majority of lncRNAs have not been comprehensively characterized. While the precise molecular mechanisms underlying the functions of lncRNAs remain to be deciphered in DCM, emerging data in other pathophysiological conditions suggests that lncRNAs can have versatile features such as genomic imprinting, acting as guides for certain histone-modifying complexes, serving as scaffolds for specific molecules, or acting as molecular sponges. In an effort to better understand these features of lncRNAs in the context of DCM, our review will first summarize some of the key molecular alterations that occur during fibrosis in the diabetic heart (extracellular proteins and endothelial-to-mesenchymal transitioning), followed by a review of the current knowledge on the crosstalk between lncRNAs and major epigenetic mechanisms (histone methylation, histone acetylation, DNA methylation, and microRNAs) within this fibrotic process.
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Affiliation(s)
- Saumik Biswas
- Department of Pathology and Laboratory Medicine, Western University, London, ON, Canada
| | - Anu Alice Thomas
- Department of Pathology and Laboratory Medicine, Western University, London, ON, Canada
| | - Subrata Chakrabarti
- Department of Pathology and Laboratory Medicine, Western University, London, ON, Canada
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Malek G, Busik J, Grant MB, Choudhary M. Models of retinal diseases and their applicability in drug discovery. Expert Opin Drug Discov 2018; 13:359-377. [PMID: 29382242 DOI: 10.1080/17460441.2018.1430136] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
INTRODUCTION The impact of vision debilitating diseases is a global public health concern, which will continue until effective preventative and management protocols are developed. Two retinal diseases responsible for the majority of vision loss in the working age adults and elderly populations are diabetic retinopathy (DR) and age-related macular degeneration (AMD), respectively. Model systems, which recapitulate aspects of human pathology, are valid experimental modalities that have contributed to the identification of signaling pathways involved in disease development and consequently potential therapies. Areas covered: The pathology of DR and AMD, which serve as the basis for designing appropriate models of disease, is discussed. The authors also review in vitro and in vivo models of DR and AMD and evaluate the utility of these models in exploratory and pre-clinical studies. Expert opinion: The complex nature of non-Mendelian diseases such as DR and AMD has made identification of effective therapeutic treatments challenging. However, the authors believe that while in vivo models are often criticized for not being a 'perfect' recapitulation of disease, they have been valuable experimentally when used with consideration of the strengths and limitations of the experimental model selected and have a place in the drug discovery process.
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Affiliation(s)
- Goldis Malek
- a Department of Ophthalmology , Duke University School of Medicine , Durham , NC , USA.,b Department of Pathology , Duke University School of Medicine , Durham , NC , USA
| | - Julia Busik
- c Department of Physiology , Michigan State University , East Lansing , MI , USA
| | - Maria B Grant
- d Department of Ophthalmology , University of Alabama at Birmingham , Birmingham , Al , USA
| | - Mayur Choudhary
- a Department of Ophthalmology , Duke University School of Medicine , Durham , NC , USA
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Yue Y, Meng K, Pu Y, Zhang X. Transforming growth factor beta (TGF-β) mediates cardiac fibrosis and induces diabetic cardiomyopathy. Diabetes Res Clin Pract 2017; 133:124-130. [PMID: 28934669 DOI: 10.1016/j.diabres.2017.08.018] [Citation(s) in RCA: 144] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Revised: 08/03/2017] [Accepted: 08/22/2017] [Indexed: 02/07/2023]
Abstract
Cardiovascular diseases account for the major cause of morbidity and mortality among individuals with diabetes. The diabetic cardiomyopathy (DCM) is a type of diabetic cardiovascular disease, which further directs to the heart failure. The researchers found that diabetes induced cardiac fibrosis plays a vital role in several of the pathological changes that associated with DCM, causing left ventricular hypertrophy (LVH), diastolic dysfunction and systolic dysfunction. However, the mechanisms involved in the pathogenesis of DCM are still elusive. Many studies have demonstrated that the transforming growth factor beta (TGF-β) is one of the molecular mediators implicated in the progression of fibrogenesis. In diabetes, hyperglycemia causes the expression changes of microRNAs (miRNAs), long non-coding RNAs (lncRNAs), TGF-β genes, TGF-β proteins and their receptors. Activated TGF-β further leads to cardiac fibrosis, which in turn inducing DCM through the SMAD-dependent and independent pathways. Here, we reviewed the the molecular pathways that activate TGF-β then leading to cardiac fibrosis, which induced the pathological changes of DCM. Illustrating the pathways of TGF-ß would propose an efficient way for the management of diabetic cardiomyopathy (see Fig. 1).
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Affiliation(s)
- Yiyang Yue
- College of Agriculture & Biotechnology, Zhejiang University, China
| | - Ke Meng
- School of Medicine, Zhejiang University, Hangzhou 310058, China
| | - Yuejie Pu
- School of Medicine, Zhejiang University, Hangzhou 310058, China
| | - Xiaoming Zhang
- School of Medicine, Zhejiang University, Hangzhou 310058, China.
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20
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Re RN. A Pathogenic Mechanism Potentially Operative in Multiple Progressive Diseases and Its Therapeutic Implications. J Clin Pharmacol 2017; 57:1507-1518. [DOI: 10.1002/jcph.997] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Accepted: 07/17/2017] [Indexed: 01/07/2023]
Affiliation(s)
- Richard N. Re
- Division of Academics-Research; Ochsner Clinic Foundation; New Orleans LA USA
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