1
|
Yu X, Chen M, Wu J, Song R. Research progress of SIRTs activator resveratrol and its derivatives in autoimmune diseases. Front Immunol 2024; 15:1390907. [PMID: 38962006 PMCID: PMC11219927 DOI: 10.3389/fimmu.2024.1390907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2024] [Accepted: 06/06/2024] [Indexed: 07/05/2024] Open
Abstract
Autoimmune diseases (AID) have emerged as prominent contributors to disability and mortality worldwide, characterized by intricate pathogenic mechanisms involving genetic, environmental, and autoimmune factors. In response to this challenge, a growing body of research in recent years has delved into genetic modifications, yielding valuable insights into AID prevention and treatment. Sirtuins (SIRTs) constitute a class of NAD-dependent histone deacetylases that orchestrate deacetylation processes, wielding significant regulatory influence over cellular metabolism, oxidative stress, immune response, apoptosis, and aging through epigenetic modifications. Resveratrol, the pioneering activator of the SIRTs family, and its derivatives have captured global scholarly interest. In the context of AID, these compounds hold promise for therapeutic intervention by modulating the SIRTs pathway, impacting immune cell functionality, suppressing the release of inflammatory mediators, and mitigating tissue damage. This review endeavors to explore the potential of resveratrol and its derivatives in AID treatment, elucidating their mechanisms of action and providing a comprehensive analysis of current research advancements and obstacles. Through a thorough examination of existing literature, our objective is to advocate for the utilization of resveratrol and its derivatives in AID treatment while offering crucial insights for the formulation of innovative therapeutic approaches.
Collapse
Affiliation(s)
- Xiaolong Yu
- Jiangsu Key Laboratory of Immunity and Metabolism, Xuzhou Medical University, Xuzhou, Jiangsu, China
- Wujin Hospital Affiliated with Jiangsu University, Changzhou, Jiangsu, China
- The Wujin Clinical College of Xuzhou Medical University, Changzhou, Jiangsu, China
| | - Mingkai Chen
- Wujin Hospital Affiliated with Jiangsu University, Changzhou, Jiangsu, China
| | - Jiabiao Wu
- Wujin Hospital Affiliated with Jiangsu University, Changzhou, Jiangsu, China
| | - Ruixiao Song
- Wujin Hospital Affiliated with Jiangsu University, Changzhou, Jiangsu, China
- The Wujin Clinical College of Xuzhou Medical University, Changzhou, Jiangsu, China
| |
Collapse
|
2
|
Ashour SH, Mudalal M, Al-Aroomi OA, Al-Attab R, Li W, Yin L. The Effects of Injectable Platelet-Rich Fibrin and Advanced-Platelet Rich Fibrin on Gingival Fibroblast Cell Vitality, Proliferation, Differentiation. Tissue Eng Regen Med 2023; 20:1161-1172. [PMID: 37823991 PMCID: PMC10646031 DOI: 10.1007/s13770-023-00586-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 08/01/2023] [Accepted: 08/07/2023] [Indexed: 10/13/2023] Open
Abstract
BACKGROUND Injectable Platelet Rich Fibrin (I-PRF) and Advanced-Platelet Rich Fibrin (A-PRF) are autologous materials derived from patients' blood and employed in periodontal regenerative surgery. Although I-PRF and A-PRF have different characteristics, their biological effects on gingival tissue fibroblasts remain unclear. This research aims to compare the in vitro capacity in inducing gene expression and proliferation of human gingival fibroblasts between A-PRF and I-PRF. METHODS Human donors undergoing dental implant surgery were sampled for normal human gingival fibroblasts (NHGFCs), followed by preparing A-PRF and I-PRF membranes. Enzyme-linked immunosorbent assay (ELISA) kit was used to assess the release of platelet-derived growth factor-AA (PDGF-AA), transforming growth factor-beta1 (TGF- β1), and insulin growth factor-1 (IGF-1) at different periods. Cell viability and proliferation of A-PRF and I-PRF were compared using CCK-8 assay. The impacts of platelet concentration on human gingival fibroblast cells (HGFCs) were evaluated by quantifying the level or amount of phosphorylated extracellular signal-regulated protein kinase (p-ERK), and Matrix metalloproteinases (MMPs), MMP-1 and MMP-3. The effects of PRF on aged human gingival fibroblast cells were examined retrospectively. RESULTS Overall, A-PRF demonstrated a higher release of TGF-B1 and PDGF-AA, while I-PRF reflected higher levels of IGF-1. A significantly higher level of cell proliferation was induced by higher cell proliferation by A-PRF and I-PRF. Additionally, in comparison to I-PRF, the expression of ERK phosphorylation and MMP-1 &MMP-3 in HGFCs was demonstrated by I-PRF and A-PRF. The increase in A-PRF was time-dependent (p < 0.05). CONCLUSION Both I-PRF and A-PRF induced a stimulatory biological impact on the proliferation of human gingiva fibroblasts, with the latter demonstrating better capacity in facilitating the release of different growth factors. A-PRF also induced higher gene expression of p-ERK, MMP-1 &MMP-3, and the proliferation of fibroblasts.
Collapse
Affiliation(s)
- Sarraj H Ashour
- Department of Oral Implantology, School/Hospital of Stomatology, Lanzhou University, Lanzhou, Gansu, 730000, China
| | - Mahmoud Mudalal
- Department of Oral and Maxillofacial Surgery and Periodontology, Faculty of Dentistry, The Arab American University, Jenin, 240, Palestine
| | - Omar A Al-Aroomi
- Department of Oral Implantology, School/Hospital of Stomatology, Lanzhou University, Lanzhou, Gansu, 730000, China
- Department of Oral Implantology, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, Fujian, China
| | - Reem Al-Attab
- Department of Oral Implantology, School/Hospital of Stomatology, Lanzhou University, Lanzhou, Gansu, 730000, China
| | - Wanxin Li
- Department of Oral Implantology, School/Hospital of Stomatology, Lanzhou University, Lanzhou, Gansu, 730000, China
| | - Lihua Yin
- Department of Oral Implantology, School/Hospital of Stomatology, Lanzhou University, Lanzhou, Gansu, 730000, China.
| |
Collapse
|
3
|
Vajdi M, Sefidmooye Azar P, Mahmoodpoor A, Dashti F, Sanaie S, Kiani Chalmardi F, Karimi A. A comprehensive insight into the molecular and cellular mechanisms of action of resveratrol on complications of sepsis a systematic review. Phytother Res 2023; 37:3780-3808. [PMID: 37405908 DOI: 10.1002/ptr.7917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 02/08/2023] [Accepted: 05/27/2023] [Indexed: 07/07/2023]
Abstract
Sepsis and septic shock are still one of the most important medical challenges. Sepsis is an extreme and uncontrolled response of the innate immune system to invading pathogenesis. Resveratrol (3,5,4'-trihydroxytrans-stilbene), is a phenolic and non-flavonoid compound naturally produced by some plants and fruits. The object of the current study is to systematically review the impacts of resveratrol and its mechanisms of function in the management of sepsis and its related complications. The guidelines of the Preferred Reporting Items for Systematic Review and Meta-Analysis (PRISMA) statements were applied to perform the study (PROSPERO: CRD42021289357). We searched Embase, Web of Science, Google Scholar, Science Direct, PubMed, ProQuest, and Scopus databases up to January 2023 by using the relevant keywords. Study criteria were met by 72 out of 1415 articles screened. The results of this systematic review depict that resveratrol can reduces the complications of sepsis by affecting inflammatory pathways, oxidative stress, and modulating immune responses. Future human randomized clinical trials are necessary due to the promising therapeutic effects of resveratrol on sepsis complications and the lack of clinical trials in this regard.
Collapse
Affiliation(s)
- Mahdi Vajdi
- Department of Clinical Nutrition, School of Nutrition and Food Science, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Pouria Sefidmooye Azar
- Department of Nutrition and Hospitality Management, School of Applied Sciences, The University of Mississippi, Oxford, Mississippi, USA
| | - Ata Mahmoodpoor
- Department of Anesthesiology and Intensive Care, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Farzaneh Dashti
- Department of Anatomical Sciences, Faculty of Medicine, Birjand University of Medical Sciences, Birjand, Iran
| | - Sarvin Sanaie
- Research Center for Integrative Medicine in Aging, Aging Research Institute, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Arash Karimi
- Nutrition Research Center, Department of Clinical Nutrition, School of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| |
Collapse
|
4
|
Markitantova Y, Simirskii V. Endogenous and Exogenous Regulation of Redox Homeostasis in Retinal Pigment Epithelium Cells: An Updated Antioxidant Perspective. Int J Mol Sci 2023; 24:10776. [PMID: 37445953 DOI: 10.3390/ijms241310776] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 06/22/2023] [Accepted: 06/26/2023] [Indexed: 07/15/2023] Open
Abstract
The retinal pigment epithelium (RPE) performs a range of necessary functions within the neural layers of the retina and helps ensure vision. The regulation of pro-oxidative and antioxidant processes is the basis for maintaining RPE homeostasis and preventing retinal degenerative processes. Long-term stable changes in the redox balance under the influence of endogenous or exogenous factors can lead to oxidative stress (OS) and the development of a number of retinal pathologies associated with RPE dysfunction, and can eventually lead to vision loss. Reparative autophagy, ubiquitin-proteasome utilization, the repair of damaged proteins, and the maintenance of their conformational structure are important interrelated mechanisms of the endogenous defense system that protects against oxidative damage. Antioxidant protection of RPE cells is realized as a result of the activity of specific transcription factors, a large group of enzymes, chaperone proteins, etc., which form many signaling pathways in the RPE and the retina. Here, we discuss the role of the key components of the antioxidant defense system (ADS) in the cellular response of the RPE against OS. Understanding the role and interactions of OS mediators and the components of the ADS contributes to the formation of ideas about the subtle mechanisms in the regulation of RPE cellular functions and prospects for experimental approaches to restore RPE functions.
Collapse
Affiliation(s)
- Yuliya Markitantova
- Koltsov Institute of Developmental Biology, Russian Academy of Sciences, 119334 Moscow, Russia
| | - Vladimir Simirskii
- Koltsov Institute of Developmental Biology, Russian Academy of Sciences, 119334 Moscow, Russia
| |
Collapse
|
5
|
Tersi N, Kassumeh S, Ohlmann A, Strehle L, Priglinger SG, Hartmann D, Wolf A, Wertheimer CM. Pharmacological Therapy of Proliferative Vitreoretinopathy: Systematic In Vitro Comparison of 36 Pharmacological Agents. J Ocul Pharmacol Ther 2023; 39:148-158. [PMID: 36867160 DOI: 10.1089/jop.2022.0078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/04/2023] Open
Abstract
Purpose: Proliferative vitreoretinopathy (PVR) is currently treated surgically. Reliable pharmaceutical options would be desirable, and numerous drugs have been proposed. This in vitro study is intended to systematically compare and determine the most promising candidates for the treatment of PVR. Methods: A structured literature review was conducted in the "PubMed" database to identify previously published agents proposed for medical treatment of PVR -36 substances that met the inclusion criteria. Toxicity and antiproliferative effects were evaluated on primary human retinal pigment epithelial (hRPE) using colorimetric viability assays. The seven substances with the widest therapeutic range between toxicity and no longer detectable antiproliferative effect were then validated with a bromodeoxyuridine assay and a scratch wound healing assay using primary cells derived from surgically excised human PVR membranes (hPVR). Results: Among 36 substances, 12 showed no effect on hRPE at all. Seventeen substances had a significant (P < 0.05) toxic effect of which nine did not have an antiproliferative effect. Fifteen substances significantly reduced hRPE proliferation (P < 0.05). The seven most promising drugs with the highest difference between toxicity and antiproliferative effects on hRPE were dasatinib, methotrexate, resveratrol, retinoic acid, simvastatin, tacrolimus, and tranilast. Whereof resveratrol, simvastatin, and tranilast additionally showed antiproliferative and dasatinib, resveratrol, and tranilast antimigratory effects on hPVR (P < 0.05). Conclusion: This study presents a systematic comparison of drugs that have been proposed for PVR treatment in a human disease model. Dasatinib, resveratrol, simvastatin, and tranilast seem to be promising and are well-characterized in human use.
Collapse
Affiliation(s)
- Natalie Tersi
- Department of Ophthalmology and University Hospital, LMU Munich, Munich, Germany
| | - Stefan Kassumeh
- Department of Ophthalmology and University Hospital, LMU Munich, Munich, Germany
| | - Andreas Ohlmann
- Department of Ophthalmology and University Hospital, LMU Munich, Munich, Germany
| | - Laura Strehle
- Department of Ophthalmology, University Hospital, Ulm University, Ulm, Germany
| | | | - Daniela Hartmann
- Department of Dermatology and Allergology, University Hospital, LMU Munich, Munich, Germany
| | - Armin Wolf
- Department of Ophthalmology and University Hospital, LMU Munich, Munich, Germany
- Department of Ophthalmology, University Hospital, Ulm University, Ulm, Germany
| | - Christian M Wertheimer
- Department of Ophthalmology and University Hospital, LMU Munich, Munich, Germany
- Department of Ophthalmology, University Hospital, Ulm University, Ulm, Germany
| |
Collapse
|
6
|
Shukal DK, Malaviya PB, Sharma T. Role of the AMPK signalling pathway in the aetiopathogenesis of ocular diseases. Hum Exp Toxicol 2022; 41:9603271211063165. [PMID: 35196887 DOI: 10.1177/09603271211063165] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND AMP-activated protein kinase (AMPK) plays a precise role as a master regulator of cellular energy homeostasis. AMPK is activated in response to the signalling cues that exhaust cellular ATP levels such as hypoxia, ischaemia, glucose depletion and heat shock. As a central regulator of both lipid and glucose metabolism, AMPK is considered to be a potential therapeutic target for the treatment of various diseases, including eye disorders. OBJECTIVE To review all the shreds of evidence concerning the role of the AMPK signalling pathway in the pathogenesis of ocular diseases. METHOD Scientific data search and review of available information evaluating the influence of AMPK signalling on ocular diseases. RESULTS Review highlights the significance of AMPK signalling in the aetiopathogenesis of ocular diseases, including cataract, glaucoma, diabetic retinopathy, retinoblastoma, age-related macular degeneration, corneal diseases, etc. The review also provides the information on the AMPK-associated pathways with reference to ocular disease, which includes mitochondrial biogenesis, autophagy and regulation of inflammatory response. CONCLUSION The study concludes the role of AMPK in ocular diseases. There is growing interest in the therapeutic utilization of the AMPK pathway for ocular disease treatment. Furthermore, inhibition of AMPK signalling might represent more pertinent strategy than AMPK activation for ocular disease treatment. Such information will guide the development of more effective AMPK modulators for ocular diseases.[Formula: see text].
Collapse
Affiliation(s)
- Dhaval K Shukal
- 534329Iladevi Cataract and IOL Research Centre, Memnagar, Ahmedabad, Gujarat, India.,76793Manipal Academy of Higher Education, Mangalore, Karnataka, India
| | - Pooja B Malaviya
- 534329Iladevi Cataract and IOL Research Centre, Memnagar, Ahmedabad, Gujarat, India.,76793Manipal Academy of Higher Education, Mangalore, Karnataka, India
| | - Tusha Sharma
- 534329Iladevi Cataract and IOL Research Centre, Memnagar, Ahmedabad, Gujarat, India
| |
Collapse
|
7
|
Acetylated Resveratrol and Oxyresveratrol Suppress UVB-Induced MMP-1 Expression in Human Dermal Fibroblasts. Antioxidants (Basel) 2021; 10:antiox10081252. [PMID: 34439500 PMCID: PMC8389240 DOI: 10.3390/antiox10081252] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 07/30/2021] [Accepted: 07/30/2021] [Indexed: 12/24/2022] Open
Abstract
Resveratrol (RES) and oxyresveratrol (OXYRES) are considered and utilized as active ingredients of anti-aging skin cosmetics. However, these compounds are susceptible to oxidative discoloration and unpleasant odor in solutions, limiting their use in cosmetics. Accordingly, RES and OXYRES were chemically modified to acetylated derivatives with enhanced stability, and their anti-aging effect on the skin and detailed molecular mechanism of their acetylated derivatives were investigated. Acetylated RES and OXYRES lost their acetyl group and exerted an inhibitory effect on H2O2-induced ROS levels in human dermal fibroblast (HDF) cells. In addition, RES, OXYRES, and their acetylated derivatives suppressed UVB-induced matrix metalloproteinase (MMP)-1 expression via inhibition of mitogen-activated protein kinases (MAPKs) and Akt/mTOR signaling pathways. Furthermore, RES, OXYRES, and their acetylated derivatives suppressed type I collagen in TPA-treated HDF cells. Collectively, these results suggest the beneficial effects and underlying molecular mechanisms of RES, OXYRES, and their acetylated derivatives for anti- skin aging applications.
Collapse
|
8
|
Mudalal M, Wang Z, Mustafa S, Liu Y, Wang Y, Yu J, Wang S, Sun X, Zhou Y. Effect of Leukocyte-Platelet Rich Fibrin (L-PRF) on Tissue Regeneration and Proliferation of Human Gingival Fibroblast Cells Cultured Using a Modified Method. Tissue Eng Regen Med 2021; 18:895-904. [PMID: 34339025 DOI: 10.1007/s13770-021-00360-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Revised: 06/04/2021] [Accepted: 06/09/2021] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND An in vitro study on rapid culturing method of human gingival fibroblast cells (HGFCs) was established to investigate the potential use of the leukocyte-platelet rich fibrin (L-PRF) in tissue engineering technology, different medical fields, including periodontology and implantology. METHODS Eight biopsies were obtained from eight different donors and a modified culturing technique was developed to obtain HGFCs. The modified 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide MTT assay was used to compare the cell viability when the modified culturing method was used in comparison to the standard method. Blood samples were collected from the same patients and L-PRF was isolated using a standard protocol. The releases of platelet-derived growth factor-AA and transforming growth factor-beta1 at various time intervals were observed using enzyme-linked immunosorbent assay (ELISA) kit. The proliferative effect of L-PRF on HGFCs was assessed by the cell counting kit-8 assay. RESULTS A simple and rapid modified method for in vitro HGFC culture yielded a cellular monolayer within three to nine days after cell culture. L-PRF with three-dimensional polymer fibers released growth factors that peaked during the first three hours and continued to produce up to 10 days. The L-PRF presented a dose-dependent effect on HGFCs proliferation where HGFCs proliferation increased with an increase in L-PRF concentration. CONCLUSION The modified technique for the culture of HGFCs might be useful for the development of future experimental and clinical studies, besides L-PRF has great therapeutic potential in oral surgery fields.
Collapse
Affiliation(s)
- Mahmoud Mudalal
- Department of Oral Implantology, Hospital of Stomatology, Jilin University, Changchun, 130021, People's Republic of China.,Provincial Key Laboratory of Dental Development, Jaw Remodeling and Regeneration, Jilin University, Changchun, 130021, People's Republic of China.,Department of Oral and Maxillofacial Surgery and Periodontology, Faculty of Dentistry, The Arab American University, Jenin, 240, Palestine
| | - Zhanqi Wang
- Department of Oral Implantology, Hospital of Stomatology, Jilin University, Changchun, 130021, People's Republic of China.,Provincial Key Laboratory of Dental Development, Jaw Remodeling and Regeneration, Jilin University, Changchun, 130021, People's Republic of China
| | - Shockry Mustafa
- Department of Oral and Maxillofacial Surgery and Periodontology, Faculty of Dentistry, The Arab American University, Jenin, 240, Palestine
| | - Yiping Liu
- Department of Oral Implantology, Hospital of Stomatology, Jilin University, Changchun, 130021, People's Republic of China.,Provincial Key Laboratory of Dental Development, Jaw Remodeling and Regeneration, Jilin University, Changchun, 130021, People's Republic of China.,Department of Dental Implantology, School and Hospital of Stomatology, Jilin University, No. 1500 Qinghua Rd, Chaoyang district, Changchun City, 130021, Jilin Province, People's Republic of China
| | - Yao Wang
- Department of Oral Implantology, Hospital of Stomatology, Jilin University, Changchun, 130021, People's Republic of China.,Provincial Key Laboratory of Dental Development, Jaw Remodeling and Regeneration, Jilin University, Changchun, 130021, People's Republic of China.,Department of Dental Implantology, School and Hospital of Stomatology, Jilin University, No. 1500 Qinghua Rd, Chaoyang district, Changchun City, 130021, Jilin Province, People's Republic of China
| | - Jize Yu
- Department of Oral Implantology, Hospital of Stomatology, Jilin University, Changchun, 130021, People's Republic of China.,Provincial Key Laboratory of Dental Development, Jaw Remodeling and Regeneration, Jilin University, Changchun, 130021, People's Republic of China.,Department of Dental Implantology, School and Hospital of Stomatology, Jilin University, No. 1500 Qinghua Rd, Chaoyang district, Changchun City, 130021, Jilin Province, People's Republic of China
| | - Shengnan Wang
- Department of Dental Implantology, School and Hospital of Stomatology, Jilin University, No. 1500 Qinghua Rd, Chaoyang district, Changchun City, 130021, Jilin Province, People's Republic of China.,College of Clinical Medicine, Jilin University, Changchun, 130021, People's Republic of China
| | - Xiaolin Sun
- Department of Oral Implantology, Hospital of Stomatology, Jilin University, Changchun, 130021, People's Republic of China. .,Provincial Key Laboratory of Dental Development, Jaw Remodeling and Regeneration, Jilin University, Changchun, 130021, People's Republic of China. .,Department of Dental Implantology, School and Hospital of Stomatology, Jilin University, No. 1500 Qinghua Rd, Chaoyang district, Changchun City, 130021, Jilin Province, People's Republic of China.
| | - Yanmin Zhou
- Department of Oral Implantology, Hospital of Stomatology, Jilin University, Changchun, 130021, People's Republic of China. .,Provincial Key Laboratory of Dental Development, Jaw Remodeling and Regeneration, Jilin University, Changchun, 130021, People's Republic of China. .,Department of Dental Implantology, School and Hospital of Stomatology, Jilin University, No. 1500 Qinghua Rd, Chaoyang district, Changchun City, 130021, Jilin Province, People's Republic of China.
| |
Collapse
|
9
|
Wang P, Chin EK, Almeida D. Antioxidants for the Treatment of Retinal Disease: Summary of Recent Evidence. Clin Ophthalmol 2021; 15:1621-1628. [PMID: 33907376 PMCID: PMC8064715 DOI: 10.2147/opth.s307009] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Accepted: 03/24/2021] [Indexed: 12/12/2022] Open
Abstract
Retinal tissue is prone to oxidant burden and oxidative stress secondary to the generation of reactive oxygen species from high metabolic demand. The formation of reactive oxygen species occurs primarily from the mitochondrial respiratory chain as well as several enzymatic and oxidation reactions that occur in the neurosensory retina and retinal pigment epithelium. This oxidative stress has been implicated in the pathogenesis of several retinal diseases and the role of antioxidants as a therapeutic treatment shows promise in slowing the progression of certain diseases. The aim of this narrative review is to describe the mechanisms of retinal oxidative stress and summarize the current available evidence for antioxidants as a treatment for vitreoretinal disorders.
Collapse
Affiliation(s)
- Patrick Wang
- School of Medicine, Queen’s University, Kingston, Ontario, Canada
| | - Eric K Chin
- Retina Consultants of Southern California, Redlands, CA, USA
| | | |
Collapse
|
10
|
Zuo W, Liu N, Zeng Y, Xiao Z, Wu K, Yang F, Li B, Song Q, Xiao Y, Liu Q. Luteolin Ameliorates Experimental Pulmonary Arterial Hypertension via Suppressing Hippo-YAP/PI3K/AKT Signaling Pathway. Front Pharmacol 2021; 12:663551. [PMID: 33935785 PMCID: PMC8082250 DOI: 10.3389/fphar.2021.663551] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 03/23/2021] [Indexed: 12/17/2022] Open
Abstract
Luteolin is a flavonoid compound with a variety of pharmacological effects. In this study, we explored the effects of luteolin on monocrotaline (MCT) induced rat pulmonary arterial hypertension (PAH) and underlying mechanisms. A rat PAH model was generated through MCT injection. In this model, luteolin improved pulmonary vascular remodeling and right ventricular hypertrophy, meanwhile, luteolin could inhibit the proliferation and migration of pulmonary artery smooth muscle cells induced by platelet-derived growth factor-BB (PDGF-BB) in a dose-dependent manner. Moreover, our results showed that luteolin could downregulate the expression of LATS1 and YAP, decrease YAP nuclear localization, reduce the expression of PI3K, and thereby restrain the phosphorylation of AKT induced by PDGF-BB. In conclusion, luteolin ameliorated experimental PAH, which was at least partly mediated through suppressing HIPPO-YAP/PI3K/AKT signaling pathway. Therefore, luteolin might become a promising candidate for treatment of PAH.
Collapse
Affiliation(s)
- Wanyun Zuo
- Department of Cardiovascular Medicine, The Second Xiangya Hospital of Central South University, Hunan, China
| | - Na Liu
- Department of Cardiovascular Medicine, The Second Xiangya Hospital of Central South University, Hunan, China
| | - Yunhong Zeng
- Department of Cardiology, Hunan Children's Hospital, Hunan, China
| | - Zhenghui Xiao
- Department of Cardiology, Hunan Children's Hospital, Hunan, China
| | - Keke Wu
- Department of Cardiovascular Medicine, The Second Xiangya Hospital of Central South University, Hunan, China
| | - Fan Yang
- Department of Cardiovascular Medicine, The Second Xiangya Hospital of Central South University, Hunan, China
| | - Biao Li
- Department of Cardiovascular Medicine, The Second Xiangya Hospital of Central South University, Hunan, China
| | - Qingqing Song
- Department of Cardiovascular Medicine, The Second Xiangya Hospital of Central South University, Hunan, China
| | - Yunbin Xiao
- Department of Cardiology, Hunan Children's Hospital, Hunan, China
| | - Qiming Liu
- Department of Cardiovascular Medicine, The Second Xiangya Hospital of Central South University, Hunan, China
| |
Collapse
|
11
|
Delmas D, Cornebise C, Courtaut F, Xiao J, Aires V. New Highlights of Resveratrol: A Review of Properties against Ocular Diseases. Int J Mol Sci 2021; 22:1295. [PMID: 33525499 PMCID: PMC7865717 DOI: 10.3390/ijms22031295] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 01/22/2021] [Accepted: 01/24/2021] [Indexed: 02/06/2023] Open
Abstract
Eye diseases are currently a major public health concern due to the growing number of cases resulting from both an aging of populations and exogenous factors linked to our lifestyles. Thus, many treatments including surgical pharmacological approaches have emerged, and special attention has been paid to prevention, where diet plays a preponderant role. Recently, potential antioxidants such as resveratrol have received much attention as potential tools against various ocular diseases. In this review, we focus on the mechanisms of resveratrol against ocular diseases, in particular age-related macular degeneration, glaucoma, cataract, diabetic retinopathy, and vitreoretinopathy. We analyze, in relation to the different steps of each disease, the resveratrol properties at multiple levels, such as cellular and molecular signaling as well as physiological effects. We show and discuss the relationship to reactive oxygen species, the regulation of inflammatory process, and how resveratrol can prevent ocular diseases through a potential epigenetic action by the activation of sirtuin-1. Lastly, various new forms of resveratrol delivery are emerging at the same time as some clinical trials are raising more questions about the future of resveratrol as a potential tool for prevention or in therapeutic strategies against ocular diseases. More preclinical studies are required to provide further insights into RSV's potential adjuvant activity.
Collapse
Affiliation(s)
- Dominique Delmas
- Université de Bourgogne Franche-Comté, F-21000 Dijon, France; (C.C.); (F.C.); (V.A.)
- INSERM Research Center U1231, Cancer and Adaptive Immune Response Team, Bioactive Molecules and Health Research Group, F-21000 Dijon, France
- Centre Anticancéreux Georges François Leclerc, F-21000 Dijon, France
| | - Clarisse Cornebise
- Université de Bourgogne Franche-Comté, F-21000 Dijon, France; (C.C.); (F.C.); (V.A.)
- INSERM Research Center U1231, Cancer and Adaptive Immune Response Team, Bioactive Molecules and Health Research Group, F-21000 Dijon, France
| | - Flavie Courtaut
- Université de Bourgogne Franche-Comté, F-21000 Dijon, France; (C.C.); (F.C.); (V.A.)
- INSERM Research Center U1231, Cancer and Adaptive Immune Response Team, Bioactive Molecules and Health Research Group, F-21000 Dijon, France
| | - Jianbo Xiao
- Nutrition and Bromatology Group, Department of Analytical Chemistry and Food Science, Faculty of Food Science and Technology, University of Vigo-Ourense Campus, E-32004 Ourense, Spain;
- College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China
- International Research Center for Food Nutrition and Safety, Jiangsu University, Zhenjiang 212013, China
| | - Virginie Aires
- Université de Bourgogne Franche-Comté, F-21000 Dijon, France; (C.C.); (F.C.); (V.A.)
- INSERM Research Center U1231, Cancer and Adaptive Immune Response Team, Bioactive Molecules and Health Research Group, F-21000 Dijon, France
| |
Collapse
|
12
|
Orlowski P, Zmigrodzka M, Tomaszewska E, Ranoszek-Soliwoda K, Pajak B, Slonska A, Cymerys J, Celichowski G, Grobelny J, Krzyzowska M. Polyphenol-Conjugated Bimetallic Au@AgNPs for Improved Wound Healing. Int J Nanomedicine 2020; 15:4969-4990. [PMID: 32764930 PMCID: PMC7369312 DOI: 10.2147/ijn.s252027] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Accepted: 06/10/2020] [Indexed: 12/14/2022] Open
Abstract
Background Polyphenols possess antioxidant, anti-inflammatory and antimicrobial properties and have been used in the treatment of skin wounds and burns. We previously showed that tannic acid-modified AgNPs sized >26 nm promote wound healing, while tannic acid-modified AgNPs sized 13 nm can elicit strong local inflammatory response. In this study, we tested bimetallic Au@AgNPs sized 30 nm modified with selected flavonoid and non-flavonoid compounds for wound healing applications. Methods Bimetallic Au@AgNPs were obtained by growing an Ag layer on AuNPs and further modified with selected polyphenols. After toxicity tests and in vitro scratch assay in HaCaT cells, modified lymph node assay as well as the mouse splint wound model were further used to access the wound healing potential of selected non-toxic modifications. Results Tannic acid, gallic acid, polydatin, resveratrol, catechin, epicatechin, epigallocatechin, epicatechin gallate, epigallocatechin gallate and procyanidin B2 used to modify Au@AgNPs exhibited good toxicological profiles in HaCaT cells. Au@AgNPs modified with 15 μM tannic acid, 200 μM resveratrol, 200 μM epicatechin gallate, 1000 μM gallic acid and 200 μM procyanidin B2 induced wound healing in vivo and did not lead to the local irritation or inflammation. Tannic acid-modified Au@AgNPs induced epithelial-to-mesenchymal transition (EMT) - like re-epithelialization, while other polyphenol modifications of Au@AgNPs acted through proliferation and wound closure. Conclusion Bimetallic Au@AgNPs can be used as a basis for modification with selected polyphenols for topical uses. In addition, we have demonstrated that particular polyphenols used to modify bimetallic nanoparticles may show different effects upon different stages of wound healing.
Collapse
Affiliation(s)
- Piotr Orlowski
- Laboratory of Nanobiology and Biomaterials, Military Institute of Hygiene and Epidemiology, Warsaw, Poland
| | - Magdalena Zmigrodzka
- Department of Pathology and Veterinary Diagnostics, Institute of Veterinary Medicine, Warsaw University of Life Sciences (WULS-SGGW), Warsaw, Poland
| | - Emilia Tomaszewska
- Department of Materials Technology and Chemistry, Faculty of Chemistry, University of Lodz, Lodz, Poland
| | | | - Beata Pajak
- Laboratory of Genetics and Molecular Biology, Military Institute of Hygiene and Epidemiology, Warsaw, Poland
| | - Anna Slonska
- Division of Microbiology, Department of Preclinical Sciences, Institute of Veterinary Medicine, Warsaw University of Life Sciences, Warsaw 02-786, Poland
| | - Joanna Cymerys
- Division of Microbiology, Department of Preclinical Sciences, Institute of Veterinary Medicine, Warsaw University of Life Sciences, Warsaw 02-786, Poland
| | - Grzegorz Celichowski
- Department of Materials Technology and Chemistry, Faculty of Chemistry, University of Lodz, Lodz, Poland
| | - Jaroslaw Grobelny
- Department of Materials Technology and Chemistry, Faculty of Chemistry, University of Lodz, Lodz, Poland
| | - Malgorzata Krzyzowska
- Laboratory of Nanobiology and Biomaterials, Military Institute of Hygiene and Epidemiology, Warsaw, Poland
| |
Collapse
|
13
|
Wang L, Liu WX, Huang XG. MicroRNA-199a-3p inhibits angiogenesis by targeting the VEGF/PI3K/AKT signalling pathway in an in vitro model of diabetic retinopathy. Exp Mol Pathol 2020; 116:104488. [PMID: 32622012 DOI: 10.1016/j.yexmp.2020.104488] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 06/19/2020] [Accepted: 06/26/2020] [Indexed: 12/21/2022]
Abstract
BACKGROUND Diabetic retinopathy (DR) is a major inducer of blindness and visual impairment. As a critical cause for DR, hyperglycaemia is able to trigger multiple biochemical alterations. MiRNAs, which contain various functions, can effectively regulate blood glucose levels. This research aims to confirm the roles of miRNA-199a-3p in the progression of angiogenesis in an in vitro model of DR. METHODS Quantitative real-time polymerase chain reaction (qRT-PCR) was carried to determine the expression levels of miR-199a-3p and VEGF in both hRMECs and APRE-19 cells. The luciferase reporter assay was used to study the interaction between miR-199a-3p and VEGF. Western blot assay was conducted to examine the expression levels of VEGF and the PI3K/AKT signalling pathway. The cell proliferation capacity was detected via the CCK-8 test. The impact of miR-199a-3p on migration was determined using Transwell and wound healing assays. A Matrigel tube formation assay was employed to determine the vascular formation of hRMECs. Flow cytometry was used to determine cell apoptosis in the presence of LY294002 as a PI3K inhibitor. RESULTS Our results showed that high glucose (HG) decreased the relative expression level of miR-199a-3p but increased VEGF expression in hRMECs and APRE-19 cells. MiR-199a-3p inhibitor augmented cell growth, migration and angiogenesis of hRMECs. Moreover, upregulation of miR-199a-3p evidently alleviated the increases in cell proliferation, migration and angiogenesis caused by HG. In addition, the luciferase reporter assay indicated that miR-199a-3p directly targeted VEGF. The overexpression of miR-199a-3p obviously restrained the HG-stimulated PI3K/AKT signalling pathway and angiogenesis, which could be further inhibited by LY294002. Moreover, LY294002 could slightly ameliorate the miR-199a-3p inhibitor-stimulated PI3K/AKT signalling pathway and angiogenesis. CONCLUSION MiR-199a-3p upregulation ameliorated HG-stimulated angiogenesis of hRMECs by modulating the PI3K/AKT pathway through inhibiting VEGF. Although retinal neovascularization in vivo has not been studied, these in vitro findings provide more evidence for the role of miR-199a-3p upregulation against HG-induced angiogenesis.
Collapse
Affiliation(s)
- Ling Wang
- Department of Ophthalmology, the First Affiliated Hospital of Hainan Medical University, Haikou 570102, PR China
| | - Wei-Xian Liu
- Department of Ophthalmology, the First Affiliated Hospital of Hainan Medical University, Haikou 570102, PR China
| | - Xiong-Gao Huang
- Department of Ophthalmology, the First Affiliated Hospital of Hainan Medical University, Haikou 570102, PR China.
| |
Collapse
|
14
|
Zhang Y, Li M, Han X. Icariin affects cell cycle progression and proliferation of human retinal pigment epithelial cells via enhancing expression of H19. PeerJ 2020; 8:e8830. [PMID: 32219038 PMCID: PMC7087489 DOI: 10.7717/peerj.8830] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Accepted: 03/02/2020] [Indexed: 12/23/2022] Open
Abstract
Background Aberrant proliferation of retinal pigment epithelial (RPE) cells under pathologic condition results in the occurrence of proliferative vitreoretinopathy (PVR). Icariin (ICA)-a flavonol glucoside-has been shown to inhibit proliferation of many cell types, but the effect on RPE cells is unknown. This study aimed to clarify the inhibitory effects of ICA on RPE cells against platelet-derived growth factor (PDGF)-BB-induced cell proliferation, and discuss the regulatory function of H19 in RPE cells. Methods MTS assay was conducted to determine the effects of ICA on cell proliferation. Flow cytometry analysis was performed to detect cell cycle progression. Quantitative real-time PCR and western blot assay were used to measure the expression patterns of genes in RPE cells. Results ICA significantly suppressed PDGF-BB-stimulated RPE cell proliferation in a concentration-dependent manner. Moreover, since administration of ICA induced cell cycle G0/G1 phase arrest, the anti-proliferative activity of ICA may be due to G0/G1 phase arrest in RPE cells. At molecular levels, cell cycle regulators cyclin D1, CDK4, CDK6, p21 and p53 were modulated in response to treatment with ICA. Most importantly, H19 was positively regulated by ICA and H19 depletion could reverse the inhibitory effects of ICA on cell cycle progression and proliferation in PDGF-BB-stimulated RPE cells. Further mechanical explorations showed that H19 knockdown resulted in alternative expressions levels of cyclin D1, CDK4, CDK6, p21 and p53 under ICA treatment. Conclusions Our findings revealed that ICA was an effective inhibitor of PDGF-BB-induced RPE cell proliferation through affecting the expression levels of cell cycle-associated factors, and highlighted the potential application of ICA in PVR therapy. H19 was described as a target regulatory gene of ICA whose disruption may contribute to excessive proliferation of RPE cells, suggesting that modulation of H19 expression may be a novel therapeutic approach to treat PVR.
Collapse
Affiliation(s)
- Yibing Zhang
- Department of Ophthalmology, The First Hospital of Jilin University, Changchun, China
| | - Min Li
- Department of Pharmacology and Toxicology, Jilin University School of Pharmaceutical Sciences, Changchun, China
| | - Xue Han
- Department of Ophthalmology, The First Hospital of Jilin University, Changchun, China
| |
Collapse
|
15
|
Cytoprotective Effects of Natural Highly Bio-Available Vegetable Derivatives on Human-Derived Retinal Cells. Nutrients 2020; 12:nu12030879. [PMID: 32214021 PMCID: PMC7146218 DOI: 10.3390/nu12030879] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 03/19/2020] [Accepted: 03/21/2020] [Indexed: 01/02/2023] Open
Abstract
Retinal pigment epithelial cells are crucial for retina maintenance, making their cytoprotection an excellent way to prevent or slow down retinal degeneration. In addition, oxidative stress, inflammation, apoptosis, neovascularization, and/or autophagy are key pathways involved in degenerative mechanisms. Therefore, here we studied the effects of curcumin, lutein, and/or resveratrol on human retinal pigment epithelial cells (ARPE-19). Cells were incubated with individual or combined agent(s) before induction of (a) H2O2-induced oxidative stress, (b) staurosporin-induced apoptosis, (c) CoCl2-induced hypoxia, or (d) a LED-autophagy perturbator. Metabolic activity, cellular survival, caspase 3/7 activity (casp3/7), cell morphology, VEGF levels, and autophagy process were assessed. H2O2 provoked a reduction in cell survival, whereas curcumin reduced metabolic activity which was not associated with cell death. Cell death induced by H2O2 was significantly reduced after pre-treatment with curcumin and lutein, but not resveratrol. Staurosporin increased caspase-3/7 activity (689%) and decreased cell survival by 32%. Curcumin or lutein protected cells from death induced by staurosporin. Curcumin, lutein, and resveratrol were ineffective on the increase of caspase 3/7 induced by staurosporin. Pre-treatment with curcumin or lutein prevented LED-induced blockage of autophagy flux. Basal-VEGF release was significantly reduced by lutein. Therefore, lutein and curcumin showed beneficial protective effects on human-derived retinal cells against several insults.
Collapse
|
16
|
Wang Z, Mudalal M, Sun Y, Liu Y, Wang J, Wang Y, Sun X, Zhou Y. The Effects of Leukocyte-Platelet Rich Fibrin (L-PRF) on Suppression of the Expressions of the Pro-Inflammatory Cytokines, and Proliferation of Schwann Cell, and Neurotrophic Factors. Sci Rep 2020; 10:2421. [PMID: 32051476 PMCID: PMC7016122 DOI: 10.1038/s41598-020-59319-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Accepted: 01/27/2020] [Indexed: 11/21/2022] Open
Abstract
This study evaluates the use of L-PRF as an autologous scaffold in nerve regeneration, and Schwann cells (SCs) proliferation and secretion of neurotrophic factors and its anti-inflammatory effect on SC Porphyromonas Gingivalis-Lipopolysaccharide (PG-LPS)-induced inflammatory responses in vitro. SEM was done to investigate various features of L-PRF. L-PRF-extracts was used to investigate the release of growth factors and treatment of SCs line. ELISA was applied to examine the release of IGF-1. The proliferative effect of L-PRF on SCs was assessed with CCK-8 assay. The effect of L-PRF on the mRNA and protein expression of SC neurotrophic factors were analyzed by RT-qPCR and ELISA. CCK-8 assay and RT-qPCR were used to determine the required concentration and the action time of PG-LPS before the anti-inflammatory effect of L-PRF was determined by measuring the changes in IL-1β, IL-6, and TNF-a with RT-qPCR and ELISA. There are different features in L-PRF. Fourteen days was sufficient to release adequate GF. The mRNA expressions of the pro-inflammatory cytokines were notably raised by PG-LPS in 3-hours treatment. L-PRF can increase SC proliferation, neurotrophic factors secretion, and suppress SC PG-LPS-induced inflammatory responses in vitro. L-PRF has the potential as an autologous biological additive for peripheral nerve regeneration in the event of nerve inflammation and injuries.
Collapse
Affiliation(s)
- Zhanqi Wang
- Department of Oral Implantology, Hospital of Stomatology, Jilin University, Changchun, 130021, China
- Provincial Key Laboratory of Dental Development, Jaw Remodeling and Regeneration, Jilin University, Changchun, 130021, China
| | - Mahmoud Mudalal
- Department of Oral Implantology, Hospital of Stomatology, Jilin University, Changchun, 130021, China
- Provincial Key Laboratory of Dental Development, Jaw Remodeling and Regeneration, Jilin University, Changchun, 130021, China
- Department of Oral and Maxillofacial Surgery and Periodontology, Faculty of Dentistry, The Arab American University, Jenin, 240, Palestine
| | - Yue Sun
- Department of Oral Implantology, Hospital of Stomatology, Jilin University, Changchun, 130021, China
- Provincial Key Laboratory of Dental Development, Jaw Remodeling and Regeneration, Jilin University, Changchun, 130021, China
| | - Yiping Liu
- Department of Oral Implantology, Hospital of Stomatology, Jilin University, Changchun, 130021, China
- Provincial Key Laboratory of Dental Development, Jaw Remodeling and Regeneration, Jilin University, Changchun, 130021, China
| | - Jia Wang
- Department of Oral Implantology, Hospital of Stomatology, Jilin University, Changchun, 130021, China
- Provincial Key Laboratory of Dental Development, Jaw Remodeling and Regeneration, Jilin University, Changchun, 130021, China
| | - Yao Wang
- Department of Oral Implantology, Hospital of Stomatology, Jilin University, Changchun, 130021, China
- Provincial Key Laboratory of Dental Development, Jaw Remodeling and Regeneration, Jilin University, Changchun, 130021, China
| | - Xiaolin Sun
- Department of Oral Implantology, Hospital of Stomatology, Jilin University, Changchun, 130021, China.
- Provincial Key Laboratory of Dental Development, Jaw Remodeling and Regeneration, Jilin University, Changchun, 130021, China.
| | - Yanmin Zhou
- Department of Oral Implantology, Hospital of Stomatology, Jilin University, Changchun, 130021, China.
- Provincial Key Laboratory of Dental Development, Jaw Remodeling and Regeneration, Jilin University, Changchun, 130021, China.
| |
Collapse
|
17
|
Millán I, Desco MDC, Torres-Cuevas I, Pérez S, Pulido I, Mena-Mollá S, Mataix J, Asensi M, Ortega ÁL. Pterostilbene Prevents Early Diabetic Retinopathy Alterations in a Rabbit Experimental Model. Nutrients 2019; 12:nu12010082. [PMID: 31892189 PMCID: PMC7019414 DOI: 10.3390/nu12010082] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 12/05/2019] [Accepted: 12/23/2019] [Indexed: 12/13/2022] Open
Abstract
Oxidative stress generated by diabetes plays a key role in the development of diabetic retinopathy (DR), a common diabetic complication. DR remains asymptomatic until it reaches advanced stages, which complicate its treatment. Although it is known that good metabolic control is essential for preventing DR, knowledge of the disease is incomplete and an effective treatment with no side effects is lacking. Pterostilbene (Pter), a natural stilbene with good antioxidant activity, has proved to beneficially affect different pathologies, including diabetes. Therefore, our study aimed to analyse the protective and/or therapeutic capacity of Pter against oxidant damage by characterising early retinal alterations induced by hyperglycaemia, and its possible mechanism of action in a rabbit model of type 1 diabetes mellitus. Pter reduced lipid and protein oxidative damage, and recovered redox status and the main activities of antioxidant enzymes. Moreover, the redox regulation by Pter was associated with activation of the PI3K/AKT/GSK3β/NRF2 pathway. Our results show that Pter is a powerful protective agent that may delay early DR development.
Collapse
Affiliation(s)
- Iván Millán
- Health Research Institute La Fe, Neonatal Research Group, Av. Fernando Abril Martorell 106, 46026 Valencia, Spain; (I.M.); (I.T.-C.)
| | - María del Carmen Desco
- FISABIO Oftalmología Médica, Vitreo-retina unit, Bif. Pío Baroja General Avilés s/n, 46015 Valencia, Spain; (M.d.C.D.); (J.M.)
| | - Isabel Torres-Cuevas
- Health Research Institute La Fe, Neonatal Research Group, Av. Fernando Abril Martorell 106, 46026 Valencia, Spain; (I.M.); (I.T.-C.)
| | - Salvador Pérez
- Faculty of Pharmacy, Department of Physiology, University of Valencia, Vicente Andrés Estellés Av. s/n, 46100 Burjassot, Spain; (S.P.); (I.P.); (S.M.-M.); (M.A.)
| | - Inés Pulido
- Faculty of Pharmacy, Department of Physiology, University of Valencia, Vicente Andrés Estellés Av. s/n, 46100 Burjassot, Spain; (S.P.); (I.P.); (S.M.-M.); (M.A.)
| | - Salvador Mena-Mollá
- Faculty of Pharmacy, Department of Physiology, University of Valencia, Vicente Andrés Estellés Av. s/n, 46100 Burjassot, Spain; (S.P.); (I.P.); (S.M.-M.); (M.A.)
| | - Jorge Mataix
- FISABIO Oftalmología Médica, Vitreo-retina unit, Bif. Pío Baroja General Avilés s/n, 46015 Valencia, Spain; (M.d.C.D.); (J.M.)
| | - Miguel Asensi
- Faculty of Pharmacy, Department of Physiology, University of Valencia, Vicente Andrés Estellés Av. s/n, 46100 Burjassot, Spain; (S.P.); (I.P.); (S.M.-M.); (M.A.)
| | - Ángel Luis Ortega
- Faculty of Pharmacy, Department of Physiology, University of Valencia, Vicente Andrés Estellés Av. s/n, 46100 Burjassot, Spain; (S.P.); (I.P.); (S.M.-M.); (M.A.)
- Correspondence: ; Tel.: +34-9-6354-3817
| |
Collapse
|
18
|
The Inhibitory Effects of Gold Nanoparticles on VEGF-A-Induced Cell Migration in Choroid-Retina Endothelial Cells. Int J Mol Sci 2019; 21:ijms21010109. [PMID: 31877924 PMCID: PMC6982177 DOI: 10.3390/ijms21010109] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 12/13/2019] [Accepted: 12/20/2019] [Indexed: 12/24/2022] Open
Abstract
Background: Vascular endothelial growth factor (VEGF) is upregulated by hypoxia and is a crucial stimulator for choroidal neovascularization (CNV) in age-related macular degeneration and pathologic myopia, as well as retinal neovascularization in proliferative diabetic retinopathy. Retinal and choroidal endothelial cells play key roles in the development of retinal and CNV, and subsequent fibrosis. At present, the effects of gold nanoparticles (AuNPs) on the VEGF-induced choroid-retina endothelial (RF/6A) cells are still unknown. In our study, we investigated the effects of AuNPs on RF/6A cell viabilities and cell adhesion to fibronectin, a major ECM protein of fibrovascular membrane. Furthermore, the inhibitory effects of AuNPs on RF/6A cell migration induced by VEGF and its signaling were studied. Methods: The cell viability assay was used to determine the viability of cells treated with AuNPs. The migration of RF/6A cells was assessed by the Transwell migration assay. The cell adhesion to fibronectin was examined by an adhesion assay. The VEGF-induced signaling pathways were determined by western blotting. Results: The 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) viability assay revealed no cytotoxicity of AuNPs on RF/6A cells. AuNPs inhibited VEGF-induced RF/6A cell migration in a concentration-dependent manner but showed no significant effects on RF/6A cell adhesion to fibronectin. Inhibitory effects of AuNPs on VEGF-induced Akt/eNOS were found. Conclusions: These results suggest that AuNPs are an effective inhibitor of VEGF-induced RF/6A cell migration through the Akt/eNOS pathways, but they have no effects on their cell viabilities and cell adhesion to fibronectin.
Collapse
|
19
|
Liu B, Song J, Han H, Hu Z, Chen N, Cui J, Matsubara JA, Zhong J, Lei H. Blockade of MDM2 with inactive Cas9 prevents epithelial to mesenchymal transition in retinal pigment epithelial cells. J Transl Med 2019; 99:1874-1886. [PMID: 31439892 DOI: 10.1038/s41374-019-0307-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 07/08/2019] [Accepted: 07/10/2019] [Indexed: 01/10/2023] Open
Abstract
Epithelial to mesenchymal transition (EMT) plays an important role in the pathogenesis of proliferative vitreoretinopathy (PVR). We aimed to demonstrate the role of mouse double minute 2 (MDM2) in transforming growth factor-beta 2 (TGF-β2)-induced EMT in human retinal pigment epithelial cells (RPEs). Immunofluorescence was used to assess MDM2 expression in epiretinal membranes (ERMs) from patients with PVR. A single guide (sg)RNA targeting the second promoter of MDM2 was cloned into a mutant lentiviral Clustered Regularly Interspaced Short Palindromic Repeats (lentiCRISPR) v2 (D10A and H840A) vector for expressing nuclease dead Cas9 (dCas9)/MDM2-sgRNA in RPEs. In addition, MDM2-sgRNA was also cloned into a pLV-sgRNA-dCas9-Kruppel associated box (KRAB) vector for expressing dCas9 fused with a transcriptional repressor KRAB/MDM2-sgRNA. TGF-β2-induced expression of MDM2 and EMT biomarkers were assessed by quantitative polymerase chain reaction (q-PCR), western blot, or immunofluorescence. Wound-healing and proliferation assays were used to evaluate the role of MDM2 in TGF-β2-induced responses in RPEs. As a result, we found that MDM2 was expressed obviously in ERMs, and that TGF-β2-induced expression of MDM2 and EMT biomarkers Fibronectin, N-cadherin and Vimentin in RPEs. Importantly, we discovered that the dCas9/MDM2-sgRNA blocked TGF-β2-induced expression of MDM2 and the EMT biomarkers without affecting their basal expression, whereas the dCas9-KRAB/MDM2-sgRNA suppressed basal MDM2 expression in RPEs. These cells could not be maintained continuously because their viability was greatly reduced. Next, we found that Nutlin-3, a small molecule blocking the interaction of MDM2 with p53, inhibited TGF-β2-induced expression of Fibronectin and N-cadherin but not Vimentin in RPEs, indicating that MDM2 functions in both p53-dependent and -independent pathways. Finally, our experimental data demonstrated that dCas9/MDM2-sgRNA suppressed TGF-β2-dependent cell proliferation and migration without disturbing the unstimulated basal activity. In conclusion, the CRISPR/dCas9 capability for blocking TGF-β2-induced expression of MDM2 and EMT biomarkers can be exploited for a therapeutic approach to PVR.
Collapse
Affiliation(s)
- Bing Liu
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA, 02114, USA.,Department of Ophthalmology, The First Affiliated Hospital of Jinan University, 510632, Guangzhou, China
| | - Jingyuan Song
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA, 02114, USA.,Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, 100193, Beijing, China
| | - Haote Han
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA, 02114, USA.,Department of Biomedical Engineering, Zhejiang University, 310027, Hangzhou, China
| | - Zhengping Hu
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA, 02114, USA
| | - Na Chen
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA, 02114, USA.,Department of Ophthalmology, Renji Hospital School of Medicine, Shanghai Jiaotong University, 200127, Shanghai, China
| | - Jing Cui
- The University of British Columbia, Vancouver, BC, V5Z 3N9, Canada
| | | | - Jingxiang Zhong
- Department of Ophthalmology, The First Affiliated Hospital of Jinan University, 510632, Guangzhou, China
| | - Hetian Lei
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA, 02114, USA.
| |
Collapse
|
20
|
Tomasello L, Coppola A, Pitrone M, Failla V, Cillino S, Pizzolanti G, Giordano C. PFN1 and integrin-β1/mTOR axis involvement in cornea differentiation of fibroblast limbal stem cells. J Cell Mol Med 2019; 23:7210-7221. [PMID: 31513338 PMCID: PMC6815913 DOI: 10.1111/jcmm.14438] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 04/26/2019] [Accepted: 05/15/2019] [Indexed: 12/14/2022] Open
Abstract
Ex vivo limbal stem cell transplantation is the main therapeutic approach to address a complete and functional re-epithelialization in corneal blindness, the second most common eye disorder. Although important key points were defined, the molecular mechanisms involved in the epithelial phenotype determination are unclear. Our previous studies have demonstrated the pluripotency and immune-modulatory of fibroblast limbal stem cells (f-LSCs), isolated from the corneal limbus. We defined a proteomic profile especially enriched in wound healing and cytoskeleton-remodelling proteins, including Profilin-1 (PFN1). In this study we postulate that pfn-1 knock down promotes epithelial lineage by inhibiting the integrin-β1(CD29)/mTOR pathway and subsequent NANOG down-expression. We showed that it is possible modulate pfn1 expression levels by treating f-LSCs with Resveratrol (RSV), a natural compound: pfn1 decline is accompanied with up-regulation of the specific differentiation epithelial genes pax6 (paired-box 6), sox17 (sex determining region Y-box 17) and ΔNp63-α (p63 splice variant), consistent with drop-down of the principle stem gene levels. These results contribute to understand the molecular biology of corneal epithelium development and suggest that pfn1 is a potential molecular target for the treatment of corneal blindness based on epithelial cell dysfunction.
Collapse
Affiliation(s)
- Laura Tomasello
- Laboratory of Regenerative Medicine "Aldo Galluzzo", Section of Endocrinology, Diabetology and Metabolism, Department of Promozione della Salute, Materno-Infantile, di Medicina Interna e Specialistica di Eccellenza "G. D'Alessandro" (ProMISE), University of Palermo, Palermo, Italy
| | - Antonina Coppola
- Laboratory of Regenerative Medicine "Aldo Galluzzo", Section of Endocrinology, Diabetology and Metabolism, Department of Promozione della Salute, Materno-Infantile, di Medicina Interna e Specialistica di Eccellenza "G. D'Alessandro" (ProMISE), University of Palermo, Palermo, Italy
| | - Maria Pitrone
- Laboratory of Regenerative Medicine "Aldo Galluzzo", Section of Endocrinology, Diabetology and Metabolism, Department of Promozione della Salute, Materno-Infantile, di Medicina Interna e Specialistica di Eccellenza "G. D'Alessandro" (ProMISE), University of Palermo, Palermo, Italy
| | - Valentina Failla
- Department of Ophthalmology, University of Palermo, Palermo, Italy
| | | | - Giuseppe Pizzolanti
- Laboratory of Regenerative Medicine "Aldo Galluzzo", Section of Endocrinology, Diabetology and Metabolism, Department of Promozione della Salute, Materno-Infantile, di Medicina Interna e Specialistica di Eccellenza "G. D'Alessandro" (ProMISE), University of Palermo, Palermo, Italy
| | - Carla Giordano
- Laboratory of Regenerative Medicine "Aldo Galluzzo", Section of Endocrinology, Diabetology and Metabolism, Department of Promozione della Salute, Materno-Infantile, di Medicina Interna e Specialistica di Eccellenza "G. D'Alessandro" (ProMISE), University of Palermo, Palermo, Italy
| |
Collapse
|
21
|
Chen Z, Wu Q, Yan C, Du J. COL6A1 knockdown suppresses cell proliferation and migration in human aortic vascular smooth muscle cells. Exp Ther Med 2019; 18:1977-1984. [PMID: 31410158 PMCID: PMC6676143 DOI: 10.3892/etm.2019.7798] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Accepted: 05/31/2019] [Indexed: 12/17/2022] Open
Abstract
Vascular smooth muscle cell (VSMC) migration is an important pathophysiological signature of neointimal hyperplasia. The aim of the present study was to investigate the effects of collagen type VI α1 chain (COL6A1) on VSMC migration. COL6A1 expression was silenced in platelet-derived growth factor (PDGF-BB)-stimulated VSMCs. Cell counting kit-8, wound healing and Transwell assays were used to measure cell viability, migration and invasion, respectively. Reverse transcription-quantitative PCR and western blot analysis were performed to analyze the expression of factors associated with metastasis. COL6A1 silencing attenuated PDGF-BB-induced increases in cell viability and invasive abilities of VSMCs, in addition to partially reversing the increased expression of fibronectin (FN), matrix metalloproteinase (MMP)-2 and MMP-9 induced by PDGF-BB stimulation. The silencing of COL6A also overturned PDGF-BB-induced reduction in tissue inhibitor of metalloproteinase 2 expression in VSMCs. PDGF-BB activated the AKT/mTOR pathway, which was also inhibited by COL6A1 knockdown. Taken together, these findings suggest that COL6A1 silencing inhibited VSMC viability and migration by inhibiting AKT/mTOR activation.
Collapse
Affiliation(s)
- Zongxiang Chen
- Emergency Department, Jining 1 People's Hospital, Jining, Shandong 272011, P.R. China
| | - Qingjian Wu
- Emergency Department, Jining 1 People's Hospital, Jining, Shandong 272011, P.R. China
| | - Chengjun Yan
- Emergency Department, Jining 1 People's Hospital, Jining, Shandong 272011, P.R. China
| | - Juan Du
- Emergency Department, Jining 1 People's Hospital, Jining, Shandong 272011, P.R. China
| |
Collapse
|
22
|
Effect of Resveratrol on In Vitro and In Vivo Models of Diabetic Retinophathy: A Systematic Review. Int J Mol Sci 2019; 20:ijms20143503. [PMID: 31319465 PMCID: PMC6678653 DOI: 10.3390/ijms20143503] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2019] [Revised: 06/19/2019] [Accepted: 07/11/2019] [Indexed: 12/21/2022] Open
Abstract
A large number of preclinical studies suggest the involvement of resveratrol in the prevention and treatment of eye diseases induced by oxidative stress and inflammation. We tested the hypothesis that resveratrol influences many pathways of in vitro and in vivo models of diabetic retinopathy through a systematic literature review of original articles. The review was conducted in accordance with the PRISMA guidelines. A literature search of all original articles published until April 2019 was performed. The terms “resveratrol” in combination with “retina”, “retinal pathology”, “diabetic retinopathy” and “eye” were searched. Possible biases were identified with the adopted SYRCLE’s tool. Eighteen articles met inclusion/exclusion criteria for full-text review. Eleven of them included in vitro experiments, 11 studies reported in vivo data and 3 studies described both in vitro and in vivo experiments. Most of the in vivo studies did not include data that would allow exclusion of bias risks, according to SYRCLE’s risk of bias tool. Both in vitro and in vivo data suggest anti-apoptotic, anti-inflammatory and anti-oxidative actions of resveratrol in models of diabetic retinopathy. However, results on its anti-angiogenic effects are contradictory and need more rigorous studies.
Collapse
|
23
|
Cai H, Shi Q, Tang Y, Chen L, Chen Y, Tao Z, Yang H, Xie F, Wu X, Liu N, Yang Y, Wu H, Tian R, Lu X, Li L. Positron Emission Tomography Imaging of Platelet-Derived Growth Factor Receptor β in Colorectal Tumor Xenograft Using Zirconium-89 Labeled Dimeric Affibody Molecule. Mol Pharm 2019; 16:1950-1957. [PMID: 30986347 DOI: 10.1021/acs.molpharmaceut.8b01317] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Huawei Cai
- Laboratory of Clinical Nuclear Medicine, Department of Nuclear Medicine, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Qiuxiao Shi
- Key Lab of Transplant Engineering and Immunology, Regenerative Medical Research Center, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Yu Tang
- Key Lab of Radiation Physics and Technology, Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China
| | - Lihong Chen
- Department of Biochemistry & Molecular Biology, West China School of Basic Sciences & Forensic Medicine, Sichuan University, Chengdu 610041, China
| | - Yue Chen
- Departments of Nuclear Medicine, Affiliated Hospital of Southwest Medical University, Luzhou 646000, China
| | - Ze Tao
- Key Lab of Transplant Engineering and Immunology, Regenerative Medical Research Center, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Hao Yang
- Key Lab of Transplant Engineering and Immunology, Regenerative Medical Research Center, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Fang Xie
- PET Center, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Xiaoai Wu
- Laboratory of Clinical Nuclear Medicine, Department of Nuclear Medicine, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Nan Liu
- Departments of Nuclear Medicine, Affiliated Hospital of Southwest Medical University, Luzhou 646000, China
| | - Yuanyou Yang
- Department of Biochemistry & Molecular Biology, West China School of Basic Sciences & Forensic Medicine, Sichuan University, Chengdu 610041, China
| | - Haoxing Wu
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital and West China School of Medicine, Sichuan University, Chengdu 610041, China
| | - Rong Tian
- Laboratory of Clinical Nuclear Medicine, Department of Nuclear Medicine, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Xiaofeng Lu
- Key Lab of Transplant Engineering and Immunology, Regenerative Medical Research Center, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Lin Li
- Laboratory of Clinical Nuclear Medicine, Department of Nuclear Medicine, West China Hospital, Sichuan University, Chengdu 610041, China
| |
Collapse
|
24
|
miR-22/KAT6B axis is a chemotherapeutic determiner via regulation of PI3k-Akt-NF-kB pathway in tongue squamous cell carcinoma. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2018; 37:164. [PMID: 30041677 PMCID: PMC6056941 DOI: 10.1186/s13046-018-0834-z] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Accepted: 06/26/2018] [Indexed: 02/06/2023]
Abstract
BACKGROUND Tongue squamous cell carcinoma (TSCC) is the most common oral cancer. Neoadjuvant systemic treatment before or after surgery for advanced TSCC is considered one of the most crucial factors in reducing mortality. However, the therapeutic benefits of chemotherapy are usually attenuated due to intrinsic and/or acquired drug resistance, and a large proportion of TSCC are resistant to chemotherapy, which may result in more aggressive tumor behavior and an even worse clinical outcome. Recently, the potential application of using miRNAs to predict therapeutic response to cancer treatment holds high promise, but miRNAs with predictive value remain to be identified and underlying mechanisms remain to be understood in TSCC. METHODS The expression of miR-22 in tissues from patients diagnosed with TSCC was analyzed using real-time PCR. The effects of miR-22 on cell proliferation and tumorigenesis in TSCC cells were analyzed by MTS assay, and flow cytometry. The tumor growth in vivo was observed in xenograft model. Luciferase reporter assay, real-time PCR and western blot were performed to validate a potential target of miR-22 in TC. The correlation between miR-22 expression and KAT6B expression, as well as the mechanisms by which miR-22 regulates PI3k-Akt-NF-kB pathway in TSCC were also addressed. RESULTS We found a strong correlation between miR-22 expression and chemosensitivity to cisplatin (CDDP) in TSCC patients. Ectopic overexpression of miR-22 enhanced TSCC cells apoptosis in response to CDDP in experimental models performed in vitro and in vivo. Moreover, we found that KAT6B is a direct functional target of miR-22. Ectopic expression of KAT6B attenuated the efficiency of miR-22 in TSCC cells upon CDDP treatment. Mechanistically, miR-22 overexpression or KAT6B knockdown inhibited PI3K/Akt/NF-κB signaling in TSCC cells, possibly via downregulating the activators of PI3K/Akt/NF-κB signaling, such as S100A8, PDGF and VEGF. Furthermore, the activation of miR-22 depended on the intensity of the stresses in the presence of p53 activation. CONCLUSIONS Our findings define miR-22 as an intrinsic molecular switch that determines p53-dependent cellular fate through KAT6B/ PI3K-Akt/ NF-kB pathway.
Collapse
|
25
|
Popescu M, Bogdan C, Pintea A, Rugină D, Ionescu C. Antiangiogenic cytokines as potential new therapeutic targets for resveratrol in diabetic retinopathy. DRUG DESIGN DEVELOPMENT AND THERAPY 2018; 12:1985-1996. [PMID: 30013318 PMCID: PMC6037275 DOI: 10.2147/dddt.s156941] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Diabetes mellitus (DM) affects >350 million people worldwide. With many complications that can reduce the patient’s quality of life, vision loss is one of the most debilitating disorders it can cause. Active research in the field of diabetes includes microvascular complications in diabetic retinopathy (DR). Disturbances in the balance of pro-angiogenesis and anti-angiogenesis factors can lead to the progression of DR. The retinal pigment epithelium (RPE) is the outermost layer of the retina, and it is essential in maintaining the visual function. The RPE produces and secretes growth factors as well as protective agents which maintain structural integrity of the retina. Small natural molecules, such as resveratrol, may influence neurotrophic factors of the retina. The pigment epithelium-derived factor (PEDF) and thrombospondin-1 (TSP-1) are secreted by RPE cells. These two proteins inhibit angiogenesis and inflammation in RPE cells. An alteration of their production contributes to various eye diseases. There is a critical balance between two important factors secreted on opposite sides of the RPE: at the basal side, vascular endothelial growth factor (VEGF; acts on the choroidal endothelium) and, on the apical side, PEDF (acts on neurons and photoreceptors). Resveratrol inhibits VEGF expression in human adult RPE cells and limits the development of proliferative vitreoretinopathy, by attenuating transforming growth factor-β2-induced wound closure and cell migration. Possible new mechanisms could include PEDF and TSP-1 expression alterations under physiological and pathological conditions. Resveratrol is currently of interest due to its capacity to influence the cell’s secretory activity. Some limitations arise from its low bioavailability. Several drug delivery systems are currently tested, promising to improve tissue concentrations. This article reviews biological pathways involved in the pathogenesis of DR that could be influenced by resveratrol. A study of these pathways could identify new potential targets for the reduction of diabetic complications.
Collapse
Affiliation(s)
- Mihaela Popescu
- Department of Biochemistry, University of Medicine and Pharmacy "Iuliu Haţieganu", Cluj-Napoca, Romania
| | - Cătălina Bogdan
- Department of Dermopharmacy and Cosmetics, University of Medicine and Pharmacy "Iuliu Haţieganu", Cluj-Napoca, Romania,
| | - Adela Pintea
- Department of Biochemistry, University of Agriculture Sciences and Veterinary Medicine, Cluj-Napoca, Romania
| | - Dumitriţa Rugină
- Department of Biochemistry, University of Agriculture Sciences and Veterinary Medicine, Cluj-Napoca, Romania
| | - Corina Ionescu
- Department of Biochemistry, University of Medicine and Pharmacy "Iuliu Haţieganu", Cluj-Napoca, Romania
| |
Collapse
|
26
|
Li J, Hui L, Kang Q, Li R. Down-regulation of microRNA-27b promotes retinal pigment epithelial cell proliferation and migration by targeting Nox2. Pathol Res Pract 2018; 214:925-933. [DOI: 10.1016/j.prp.2018.05.025] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Revised: 05/21/2018] [Accepted: 05/22/2018] [Indexed: 12/11/2022]
|
27
|
Tan X, Chen C, Zhu Y, Deng J, Qiu X, Huang S, Shang F, Cheng B, Liu Y. Proteotoxic Stress Desensitizes TGF-beta Signaling Through Receptor Downregulation in Retinal Pigment Epithelial Cells. Curr Mol Med 2018. [PMID: 28625142 PMCID: PMC5688417 DOI: 10.2174/1566524017666170619113435] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Background: Proteotoxic stress and transforming growth factor (TGFβ)-induced epithelial-mesenchymal transition (EMT) are two main contributors of intraocular fibrotic disorders, including proliferative vitreoretinopathy (PVR) and proliferative diabetic retinopathy (PDR). However, how these two factors communicate with each other is not well-characterized. Objective: The aim was to investigate the regulatory role of proteotoxic stress on TGFβ signaling in retinal pigment epithelium. Methods: ARPE-19 cells and primary human retinal pigment epithelial (RPE) cells were treated with proteasome inhibitor MG132 and TGFβ. Cell proliferation was analyzed by CCK-8 assay. The levels of mesenchymal markers α-SMA, fibronectin, and vimentin were analyzed by real-time polymerase chain reaction (PCR), western blot, and immunofluorescence. Cell migration was analyzed by scratch wound assay. The levels of p-Smad2, total Smad2, p-extracellular signal-regulated kinase 1/2 (ERK1/2), total ERK1/2, p-focal adhesion kinase (FAK), and total FAK were analyzed by western blot. The mRNA and protein levels of TGFβ receptor-II (TGFβR-II) were measured by real-time PCR and western blot, respectively. Results: MG132-induced proteotoxic stress resulted in reduced cell proliferation. MG132 significantly suppressed TGFβ-induced upregulation of α-SMA, fibronectin, and vimentin, as well as TGFβ-induced cell migration. The phosphorylation levels of Smad2, ERK1/2, and FAK were also suppressed by MG132. Additionally, the mRNA level and protein level of TGFβR-II decreased upon MG132 treatment. Conclusion: Proteotoxic stress suppressed TGFβ-induced EMT through downregulation of TGFβR-II and subsequent blockade of Smad2, ERK1/2, and FAK activation.
Collapse
Affiliation(s)
- X Tan
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong. China
| | - C Chen
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong. China
| | - Y Zhu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong. China
| | - J Deng
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong. China
| | - X Qiu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong. China
| | - S Huang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong. China
| | - F Shang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong. China
| | - B Cheng
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, 54 South Xianlie Road, Guangzhou, 510060. China
| | - Y Liu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, 54 South Xianlie Road, Guangzhou, 510060. China
| |
Collapse
|
28
|
Jovancevic N, Khalfaoui S, Weinrich M, Weidinger D, Simon A, Kalbe B, Kernt M, Kampik A, Gisselmann G, Gelis L, Hatt H. Odorant Receptor 51E2 Agonist β-ionone Regulates RPE Cell Migration and Proliferation. Front Physiol 2017; 8:888. [PMID: 29249973 PMCID: PMC5714887 DOI: 10.3389/fphys.2017.00888] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Accepted: 10/19/2017] [Indexed: 01/09/2023] Open
Abstract
The odorant receptor 51E2 (OR51E2), which is well-characterized in prostate cancer cells and epidermal pigment cells, was identified for the first time as the most highly expressed OR in human fetal and adult retinal pigment epithelial (RPE) cells. Immunofluorescence staining and Western blot analysis revealed OR51E2 localization throughout the cytosol and in the plasma membrane. Additionally, immunohistochemical staining of diverse layers of the eye showed that the expression of OR51E2 is restricted to the pigment cells of the RPE and choroid. The results of Ca2+-imaging experiments demonstrate that activation of OR51E2 triggers a Ca2+ dependent signal pathway in RPE cells. Downstream signaling of OR51E2 involves the activation of adenylyl cyclase, ERK1/2 and AKT. The activity of these protein kinases likely accounts for the demonstrated increase in the migration and proliferation of RPE cells upon stimulation with the OR51E2 ligand β-ionone. These findings suggest that OR51E2 is involved in the regulation of RPE cell growth. Thus, OR51E2 represents a potential target for the treatment of proliferative disorders.
Collapse
Affiliation(s)
| | | | | | | | - Annika Simon
- Cell Physiology, Ruhr-University Bochum, Bochum, Germany
| | - Benjamin Kalbe
- Cell Physiology, Ruhr-University Bochum, Bochum, Germany
| | - Marcus Kernt
- Ophthalmology, Ludwig Maximilian University of Munich, Munich, Germany
| | - Anselm Kampik
- Ophthalmology, Ludwig Maximilian University of Munich, Munich, Germany
| | | | - Lian Gelis
- Cell Physiology, Ruhr-University Bochum, Bochum, Germany
| | - Hanns Hatt
- Cell Physiology, Ruhr-University Bochum, Bochum, Germany
| |
Collapse
|
29
|
Zhang X, Zhao F, Zhao JF, Fu HY, Huang XJ, Lv BD. PDGF-mediated PI3K/AKT/β-catenin signaling regulates gap junctions in corpus cavernosum smooth muscle cells. Exp Cell Res 2017; 362:252-259. [PMID: 29174980 DOI: 10.1016/j.yexcr.2017.11.025] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Revised: 11/17/2017] [Accepted: 11/18/2017] [Indexed: 02/06/2023]
Abstract
Erectile dysfunction (ED) is the most common sexual disorder that men report to healthcare providers. Gap junctions (GJs) are thought to be responsible for synchronous shrinkage of corpus cavernosum smooth muscle cells (CCSMCs), and play thus an important role in the maintenance of an erection. Hypoxia has been suggested as a pathological mechanism underlying ED. Here we demonstrate that hypoxia increased the expression of platelet-derived growth factor (PDGF) and the main GJ component connexin (Cx)43 in CCSMCs. Inhibiting PDGF receptor (PDGFR) activity decreased Cx43 expression. Treatment with different concentrations of PDGF increased the levels of phosphorylated protein kinase B (AKT), β-catenin, and Cx43, whereas inhibition of PDGFR or activation of phosphatidylinositol 3 kinase (PI3K)/AKT signaling altered β-catenin and Cx43 expression. Meanwhile, silencing β-catenin resulted in the downregulation of Cx43. These results demonstrate that PDGF secretion by CCSMCs and vascular endothelial cells is enhanced under hypoxic conditions, leading to increased Cx43 expression through PI3K/AKT/β-catenin signaling and ultimately affecting GJ function in ED. Thus, targeting this pathway is a potential therapeutic strategy for the treatment of ED.
Collapse
Affiliation(s)
- Xiang Zhang
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Fan Zhao
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Jian-Feng Zhao
- Department of Urology, The Second Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
| | - Hui-Ying Fu
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China; Andrology Laboratory on Integration of Chinese and Western Medicine, Zhejiang Provincial Key Laboratory of Traditional Chinese Medicine, Hangzhou, China
| | - Xiao-Jun Huang
- Department of Urology, The Second Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
| | - Bo-Dong Lv
- Department of Urology, The Second Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China; Andrology Laboratory on Integration of Chinese and Western Medicine, Zhejiang Provincial Key Laboratory of Traditional Chinese Medicine, Hangzhou, China.
| |
Collapse
|
30
|
Matoba R, Morizane Y, Shiode Y, Hirano M, Doi S, Toshima S, Araki R, Hosogi M, Yonezawa T, Shiraga F. Suppressive effect of AMP-activated protein kinase on the epithelial-mesenchymal transition in retinal pigment epithelial cells. PLoS One 2017; 12:e0181481. [PMID: 28719670 PMCID: PMC5515442 DOI: 10.1371/journal.pone.0181481] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2017] [Accepted: 06/30/2017] [Indexed: 01/28/2023] Open
Abstract
The epithelial-mesenchymal transition (EMT) in retinal pigment epithelial (RPE) cells plays a central role in the development of proliferative vitreoretinopathy (PVR). The purpose of this study was to investigate the effect of AMP-activated protein kinase (AMPK), a key regulator of energy homeostasis, on the EMT in RPE cells. In this study, EMT-associated formation of cellular aggregates was induced by co-stimulation of cultured ARPE-19 cells with tumor necrosis factor (TNF)-α (10 ng/ml) and transforming growth factor (TGF)-β2 (5 ng/ml). 5-Aminoimidazole-4-carboxamide-1-β-D-ribofuranoside (AICAR), a potent activator of AMPK, significantly suppressed TNF-α and TGF-β2-induced cellular aggregate formation (p < 0.01). Dipyridamole almost completely reversed the suppressive effect of AICAR, whereas 5’-amino-5’-deoxyadenosine restored aggregate formation by approximately 50%. AICAR suppressed the downregulation of E-cadherin and the upregulation of fibronectin and α-smooth muscle actin by TNF-α and TGF-β2. The levels of matrix metalloproteinase (MMP)-2, MMP-9, interleukin-6, and vascular endothelial growth factor were significantly decreased by AICAR. Activation of the mitogen-activated protein kinase and mammalian target of rapamycin pathways, but not the Smad pathway, was inhibited by AICAR. These findings indicate that AICAR suppresses the EMT in RPE cells at least partially via activation of AMPK. AMPK is a potential target molecule for the prevention and treatment of PVR, so AICAR may be a promising candidate for PVR therapy.
Collapse
Affiliation(s)
- Ryo Matoba
- Department of Ophthalmology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Yuki Morizane
- Department of Ophthalmology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
- * E-mail:
| | - Yusuke Shiode
- Department of Ophthalmology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Masayuki Hirano
- Department of Ophthalmology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Shinichiro Doi
- Department of Ophthalmology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Shinji Toshima
- Department of Ophthalmology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Ryoichi Araki
- Department of Ophthalmology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Mika Hosogi
- Department of Ophthalmology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Tomoko Yonezawa
- Department of Molecular Biology and Biochemistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Fumio Shiraga
- Department of Ophthalmology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| |
Collapse
|
31
|
Abstract
Retinal fibrosis, characterized by dysregulation of extracellular matrix (ECM) protein deposition by retinal endothelial cells, pigment epithelial cells, and other resident cell-types, is a unifying feature of several common retinal diseases. Fibronectin is an early constituent of newly deposited ECM and serves as a template for assembly of other ECM proteins, including collagens. Under physiologic conditions, fibronectin is found in all layers of Bruch's membrane. Proliferative vitreoretinopathy (PVR), a complication of retinal surgery, is characterized by ECM accumulation. Among the earliest histologic manifestations of diabetic retinopathy (DR) is capillary basement membrane thickening, which occurs due to perturbations in ECM homeostasis. Neovascularization, the hallmark of late stage DR as well as exudative age-related macular degeneration (AMD), involves ECM assembly as a scaffold for the aberrant new vessel architecture. Rodent models of retinal injury demonstrate a key role for fibronectin in complications characteristic of PVR, including retinal detachment. In mouse models of DR, reducing fibronectin gene expression has been shown to arrest the accumulation of ECM in the capillary basement membrane. Alterations in matrix metalloproteinase activity thought to be important in the pathogenesis of AMD impact the turnover of fibronectin matrix as well as collagens. Growth factors involved in PVR, AMD, and DR, such as PDGF and TGFβ, are known to stimulate fibronectin matrix assembly. A deeper understanding of how pathologic ECM deposition contributes to disease progression may help to identify novel targets for therapeutic intervention.
Collapse
Affiliation(s)
- Charles G Miller
- Department of Ophthalmology, Rutgers-Robert Wood Johnson Medical School, Piscataway, NJ 08854-5635, USA
| | - Greg Budoff
- Department of Ophthalmology, Rutgers-Robert Wood Johnson Medical School, Piscataway, NJ 08854-5635, USA
| | - Jonathan L Prenner
- Department of Ophthalmology, Rutgers-Robert Wood Johnson Medical School, Piscataway, NJ 08854-5635, USA
- NJ Retina, New Brunswick, NJ 08901-2066, USA
| | - Jean E Schwarzbauer
- Department of Molecular Biology, Princeton University, Princeton, NJ 08544-1014, USA
| |
Collapse
|
32
|
Kimsa M, Strzalka-Mrozik B, Kimsa-Dudek M, Kruszniewska-Rajs C, Gola J, Adamska J, Mazurek U. Transforming growth factor β-related genes in human retinal pigment epithelial cells after tacrolimus treatment. Pharmacol Rep 2016; 68:969-74. [DOI: 10.1016/j.pharep.2016.04.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Revised: 04/28/2016] [Accepted: 04/29/2016] [Indexed: 01/28/2023]
|
33
|
Jansson D, Scotter EL, Rustenhoven J, Coppieters N, Smyth LCD, Oldfield RL, Bergin PS, Mee EW, Graham ES, Faull RLM, Dragunow M. Interferon-γ blocks signalling through PDGFRβ in human brain pericytes. J Neuroinflammation 2016; 13:249. [PMID: 27654972 PMCID: PMC5031293 DOI: 10.1186/s12974-016-0722-4] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Accepted: 09/13/2016] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Neuroinflammation and blood-brain barrier (BBB) disruption are common features of many brain disorders, including Alzheimer's disease, epilepsy, and motor neuron disease. Inflammation is thought to be a driver of BBB breakdown, but the underlying mechanisms for this are unclear. Brain pericytes are critical cells for maintaining the BBB and are immunologically active. We sought to test the hypothesis that inflammation regulates the BBB by altering pericyte biology. METHODS We exposed primary adult human brain pericytes to chronic interferon-gamma (IFNγ) for 4 days and measured associated functional aspects of pericyte biology. Specifically, we examined the influence of inflammation on platelet-derived growth factor receptor-beta (PDGFRβ) expression and signalling, as well as pericyte proliferation and migration by qRT-PCR, immunocytochemistry, flow cytometry, and western blotting. RESULTS Chronic IFNγ treatment had marked effects on pericyte biology most notably through the PDGFRβ, by enhancing agonist (PDGF-BB)-induced receptor phosphorylation, internalization, and subsequent degradation. Functionally, chronic IFNγ prevented PDGF-BB-mediated pericyte proliferation and migration. CONCLUSIONS Because PDGFRβ is critical for pericyte function and its removal leads to BBB leakage, our results pinpoint a mechanism linking chronic brain inflammation to BBB dysfunction.
Collapse
Affiliation(s)
- Deidre Jansson
- Department of Pharmacology and Clinical Pharmacology, The University of Auckland, 1023, Auckland, New Zealand.,Gravida National Centre for Growth and Development, The University of Auckland, 1023, Auckland, New Zealand.,Centre for Brain Research, The University of Auckland, 1023, Auckland, New Zealand
| | - Emma L Scotter
- Department of Pharmacology and Clinical Pharmacology, The University of Auckland, 1023, Auckland, New Zealand.,Centre for Brain Research, The University of Auckland, 1023, Auckland, New Zealand
| | - Justin Rustenhoven
- Department of Pharmacology and Clinical Pharmacology, The University of Auckland, 1023, Auckland, New Zealand.,Centre for Brain Research, The University of Auckland, 1023, Auckland, New Zealand
| | - Natacha Coppieters
- Department of Anatomy and Medical Imaging, The University of Auckland, 1023, Auckland, New Zealand.,Centre for Brain Research, The University of Auckland, 1023, Auckland, New Zealand
| | - Leon C D Smyth
- Department of Pharmacology and Clinical Pharmacology, The University of Auckland, 1023, Auckland, New Zealand.,Centre for Brain Research, The University of Auckland, 1023, Auckland, New Zealand
| | | | - Peter S Bergin
- Centre for Brain Research, The University of Auckland, 1023, Auckland, New Zealand.,Auckland City Hospital, 1023, Auckland, New Zealand
| | - Edward W Mee
- Centre for Brain Research, The University of Auckland, 1023, Auckland, New Zealand.,Auckland City Hospital, 1023, Auckland, New Zealand
| | - E Scott Graham
- Department of Pharmacology and Clinical Pharmacology, The University of Auckland, 1023, Auckland, New Zealand.,Centre for Brain Research, The University of Auckland, 1023, Auckland, New Zealand
| | - Richard L M Faull
- Department of Anatomy and Medical Imaging, The University of Auckland, 1023, Auckland, New Zealand.,Centre for Brain Research, The University of Auckland, 1023, Auckland, New Zealand
| | - Mike Dragunow
- Department of Pharmacology and Clinical Pharmacology, The University of Auckland, 1023, Auckland, New Zealand. .,Gravida National Centre for Growth and Development, The University of Auckland, 1023, Auckland, New Zealand. .,Centre for Brain Research, The University of Auckland, 1023, Auckland, New Zealand. .,Department of Pharmacology and Clinical Pharmacology, The University of Auckland, Private Bag 92019, 1142, Auckland, New Zealand.
| |
Collapse
|
34
|
Farnoodian M, Halbach C, Slinger C, Pattnaik BR, Sorenson CM, Sheibani N. High glucose promotes the migration of retinal pigment epithelial cells through increased oxidative stress and PEDF expression. Am J Physiol Cell Physiol 2016; 311:C418-36. [PMID: 27440660 DOI: 10.1152/ajpcell.00001.2016] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Accepted: 07/18/2016] [Indexed: 12/11/2022]
Abstract
Defects in the outer blood-retinal barrier have significant impact on the pathogenesis of diabetic retinopathy and macular edema. However, the detailed mechanisms involved remain largely unknown. This is, in part, attributed to the lack of suitable animal and cell culture models, including those of mouse origin. We recently reported a method for the culture of retinal pigment epithelial (RPE) cells from wild-type and transgenic mice. The RPE cells are responsible for maintaining the integrity of the outer blood-retinal barrier whose dysfunction during diabetes has a significant impact on vision. Here we determined the impact of high glucose on the function of RPE cells. We showed that high glucose conditions resulted in enhanced migration and increased the level of oxidative stress in RPE cells, but minimally impacted their rate of proliferation and apoptosis. High glucose also minimally affected the cell-matrix and cell-cell interactions of RPE cells. However, the expression of integrins and extracellular matrix proteins including pigment epithelium-derived factor (PEDF) were altered under high glucose conditions. Incubation of RPE cells with the antioxidant N-acetylcysteine under high glucose conditions restored normal migration and PEDF expression. These cells also exhibited increased nuclear localization of the antioxidant transcription factor Nrf2 and ZO-1, reduced levels of β-catenin and phagocytic activity, and minimal effect on production of vascular endothelial growth factor, inflammatory cytokines, and Akt, MAPK, and Src signaling pathways. Thus high glucose conditions promote RPE cell migration through increased oxidative stress and expression of PEDF without a significant effect on the rate of proliferation and apoptosis.
Collapse
Affiliation(s)
- Mitra Farnoodian
- Department of Ophthalmology and Visual Sciences, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Caroline Halbach
- Department of Ophthalmology and Visual Sciences, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Cassidy Slinger
- Department of Ophthalmology and Visual Sciences, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Bikash R Pattnaik
- Department of Ophthalmology and Visual Sciences, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin; McPherson Eye Research Institute, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin; and
| | - Christine M Sorenson
- Department of Pediatrics, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin; McPherson Eye Research Institute, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin; and
| | - Nader Sheibani
- Department of Ophthalmology and Visual Sciences, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin; McPherson Eye Research Institute, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin; and Biomedical Engineering, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| |
Collapse
|
35
|
QIN JIE, WANG LIN, ZHENG LING, ZHOU XIAOYAN, ZHANG YIDI, YANG TINGTING, ZHOU YANMIN. Concentrated growth factor promotes Schwann cell migration partly through the integrin β1-mediated activation of the focal adhesion kinase pathway. Int J Mol Med 2016; 37:1363-70. [DOI: 10.3892/ijmm.2016.2520] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Accepted: 03/01/2016] [Indexed: 11/06/2022] Open
|
36
|
Nabavi SF, Barber AJ, Spagnuolo C, Russo GL, Daglia M, Nabavi SM, Sobarzo-Sánchez E. Nrf2 as molecular target for polyphenols: A novel therapeutic strategy in diabetic retinopathy. Crit Rev Clin Lab Sci 2016; 53:293-312. [PMID: 26926494 DOI: 10.3109/10408363.2015.1129530] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Diabetic retinopathy is a microvascular complication of diabetes that is considered one of the leading causes of blindness among adults. More than 4.4 million people suffer from this disorder throughout the world. Growing evidence suggests that oxidative stress plays a crucial role in the pathophysiology of diabetic retinopathy. Nuclear factor erythroid 2-related factor 2 (Nrf2), a redox sensitive transcription factor, plays an essential protective role in regulating the physiological response to oxidative and electrophilic stress via regulation of multiple genes encoding antioxidant proteins and phase II detoxifying enzymes. Many studies suggest that dozens of natural compounds, including polyphenols, can supress oxidative stress and inflammation through targeting Nrf2 and consequently activating the antioxidant response element-related cytoprotective genes. Therefore, Nrf2 may provide a new therapeutic target for treatment of diabetic retinopathy. In the present article, we will focus on the role of Nrf2 in diabetic retinopathy and the ability of polyphenols to target Nrf2 as a therapeutic strategy.
Collapse
Affiliation(s)
- Seyed Fazel Nabavi
- a Applied Biotechnology Research Center, Baqiyatallah University of Medical Sciences , Tehran , Iran
| | - Alistair J Barber
- b Department of Ophthalmology , Penn State Hershey Eye Center, Penn State Hershey College of Medicine , Hershey , PA , USA
| | - Carmela Spagnuolo
- c Institute of Food Sciences, National Research Council , Avellino , Italy
| | - Gian Luigi Russo
- c Institute of Food Sciences, National Research Council , Avellino , Italy
| | - Maria Daglia
- d Department of Drug Sciences , Medicinal Chemistry and Pharmaceutical Technology Section, University of Pavia , Pavia , Italy , and
| | - Seyed Mohammad Nabavi
- a Applied Biotechnology Research Center, Baqiyatallah University of Medical Sciences , Tehran , Iran
| | - Eduardo Sobarzo-Sánchez
- e Laboratory of Pharmaceutical Chemistry , Department of Organic Chemistry, Faculty of Pharmacy, University of Santiago De Compostela , Santiago De Compostela , Spain
| |
Collapse
|
37
|
Yang SD, Ma L, Yang DL, Ding WY. Combined effect of 17β-estradiol and resveratrol against apoptosis induced by interleukin-1β in rat nucleus pulposus cells via PI3K/Akt/caspase-3 pathway. PeerJ 2016; 4:e1640. [PMID: 26824000 PMCID: PMC4730868 DOI: 10.7717/peerj.1640] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2015] [Accepted: 01/08/2016] [Indexed: 12/27/2022] Open
Abstract
Background: In previous studies, both 17β-estradiol (E2) and resveratrol (RES) were reported to protect intervertebral disc cells against aberrant apoptosis. Given that E2 has a better anti-apoptotic effect with more cancer risk and RES has an anti-apoptotic effect with less cancer risk, the combined use of E2 with RES is promising in developing clinical therapies to treat apoptosis-related diseases such as intervertebral disc degeneration in the future. Objective: The purpose of this study was to explore the combined effect of E2 with RES on rat nucleus pulposus cells and the underlying mechanisms. Methods: TUNEL assay and FACS analysis were used to determine apoptotic incidence of nucleus pulposus cells. MTS assay was used to determine cell viability, and cellular binding assay was used to determine cell-ECM (extracellular matrix) ability. Real-time quantitative RT-PCR was to determine mRNA level of target genes. And Western blot was used to determine the protein level. Results: Both E2 and RES decreased apoptotic incidence when used singly; interestingly, they decreased apoptosis more efficiently when used combinedly. Meanwhile, E2 and RES combined together against the decrease of cell viability and binding ability resulting from IL-1β cytotoxicity. As well, activated caspase-3 was suppressed by the combined effect. Furthermore, IL-1β downregulated expression level of type II collagen and aggrecan (standing for anabolism), while upregulated MMP-3 and MMP-13 (standing for catabolism). However, the combined use of E2 with RES effectively abolished the above negative effects caused by IL-1β, better than either single use. Finally, it turned out to be that E2 and RES combined together against apoptosis via the activation of PI3K/Akt/caspase-3 pathway. Conclusion: This study presented that IL-1β induced aberrant apoptosis, which was efficiently resisted by the combined use of E2 with RES via PI3K/Akt/caspase-3 pathway.
Collapse
Affiliation(s)
- Si-Dong Yang
- Department of Spinal Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, People's Republic of China
| | - Lei Ma
- Department of Spinal Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, People's Republic of China
| | - Da-Long Yang
- Department of Spinal Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, People's Republic of China
| | - Wen-Yuan Ding
- Department of Spinal Surgery, The Third Hospital of Hebei Medical University; Hebei Provincial Key Laboratory of Orthopaedic Biomechanics, Shijiazhuang, Hebei, People's Republic of China
| |
Collapse
|
38
|
The mTOR Kinase Inhibitor INK128 Blunts Migration of Cultured Retinal Pigment Epithelial Cells. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2016; 854:709-15. [PMID: 26427479 DOI: 10.1007/978-3-319-17121-0_94] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Retinal pigment epithelium (RPE) cell migration in response to disease has been reported for age-related macular degeneration, proliferative vitreoretinopathy, and proliferative diabetic retinopathy. The complex molecular process of RPE cell migration is regulated in part by growth factors and cytokines, and activation of the PI3/AKT/mTOR signaling pathway. Rapamycin, an allosteric mTOR inhibitor, has been shown to block only one of the primary downstream mTOR effectors, p70 S6 kinase 1, in many cell types. INK128, a selective mTOR ATP binding site competitor, blocks both p70 S6 kinase 1 and a second primary downstream effector, 4E-BP1. We performed scratch assays using differentiated ARPE-19 and primary porcine RPE cells to assess the effect of mTOR inhibition on cell migration. We found that INK128-mediated blocking of both p70 S6 kinase 1 and 4E-BP1 was much more effective at preventing RPE cell migration than rapamycin-mediated inhibition of p70 S6 kinase 1 alone.
Collapse
|
39
|
Resveratrol inhibits epithelial-mesenchymal transition of retinal pigment epithelium and development of proliferative vitreoretinopathy. Sci Rep 2015; 5:16386. [PMID: 26552368 PMCID: PMC4639835 DOI: 10.1038/srep16386] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Accepted: 10/14/2015] [Indexed: 02/07/2023] Open
Abstract
Proliferative vitreoretinopathy (PVR) is a serious complication of retinal detachment and ocular trauma, and its recurrence may lead to irreversible vision loss. Epithelial to mesenchymal transition (EMT) of retinal pigment epithelial (RPE) cells is a critical step in the pathogenesis of PVR, which is characterized by fibrotic membrane formation and traction retinal detachment. In this study, we investigated the potential impact of resveratrol (RESV) on EMT and the fibrotic process in cultured RPE cells and further examined the preventive effect of RESV on PVR development using a rabbit model of PVR. We found that RESV induces mesenchymal to epithelial transition (MET) and inhibits transforming growth factor-β2(TGF-β2)-induced EMT of RPE cells by deacetylating SMAD4. The effect of RESV on MET was dependent on sirtuin1 activation. RESV suppressed proliferation, migration and fibronectin synthesis induced by platelet-derived growth factor-BB or TGF-β2. In vivo, RESV inhibited the progression of experimental PVR in rabbit eyes. Histological findings showed that RESV reduced fibrotic membrane formation and decreased α-SMA expression in the epiretinal membranes. These results suggest the potential use of RESV as a therapeutic agent to prevent the development of PVR by targeting EMT of RPE.
Collapse
|
40
|
Lai YT, Lo CM. Assessing in vitro cytotoxicity of cell micromotion by Hilbert-Huang transform. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2015; 2014:3200-3. [PMID: 25570671 DOI: 10.1109/embc.2014.6944303] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Electric cell-substrate impedance sensing (ECIS) is a powerful instrument for quantifying cell behavior in tissue culture. As cells attach and spread on the sensing electrode, they restrict the current flow and hence cause the increase of electrical impedance. Furthermore, cell motion may reveal itself as electrical fluctuations, which are always associated with living cells and continue even when the cells become fully confluent. The impedance fluctuation is attributed to incessant changes in the size of the cell-substrate space as cells persistently rearrange their cell-substrate adhesion sites. The magnitude of this sort of vertical motion detected by ECIS is of the order of nanometers and referred to as micromotion. In this study, Hilbert-Huang Transform was used as a micromotion analysis tool to distinguish the in vitro cytotoxicity of human umbilical vein endothelial cells (HUVECs) exposed to low levels of cytochalasin B. Hilbert-Huang Transform consists of two procedures: the empirical mode decomposition (EMD) and the Hilbert Transform. The measured impedance fluctuations due to cell micromotion were decomposed into several intrinsic mode functions (IMFs) by EMD, and then these IMFs were transferred to instantaneous frequencies by Hilbert Transform. Both amplitude and phase of instantaneous frequencies were expressed as a time-frequency spectrum, called Hilbert spectrum, which displayed different distribution pattern in response to different cytochalasin B concentration. The total instantaneous energy (IE) of each IMF was also calculated to quantify the spectral difference. In addition to the observation of a dose-dependent relationship, the IE value of the first IMF at 0.1 μM decreased to about 48% of the control value and significantly distinguished the cytotoxic effect of 0.1 μM of cytochalasin B (P<0.05).
Collapse
|
41
|
Gamal W, Borooah S, Smith S, Underwood I, Srsen V, Chandran S, Bagnaninchi PO, Dhillon B. Real-time quantitative monitoring of hiPSC-based model of macular degeneration on Electric Cell-substrate Impedance Sensing microelectrodes. Biosens Bioelectron 2015; 71:445-455. [PMID: 25950942 PMCID: PMC4456427 DOI: 10.1016/j.bios.2015.04.079] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Revised: 04/15/2015] [Accepted: 04/23/2015] [Indexed: 01/29/2023]
Abstract
Age-related macular degeneration (AMD) is the leading cause of blindness in the developed world. Humanized disease models are required to develop new therapies for currently incurable forms of AMD. In this work, a tissue-on-a-chip approach was developed through combining human induced pluripotent stem cells, Electric Cell-substrate Impedance Sensing (ECIS) and reproducible electrical wounding assays to model and quantitatively study AMD. Retinal Pigment Epithelium (RPE) cells generated from a patient with an inherited macular degeneration and from an unaffected sibling were used to test the model platform on which a reproducible electrical wounding assay was conducted to model RPE damage. First, a robust and reproducible real-time quantitative monitoring over a 25-day period demonstrated the establishment and maturation of RPE layers on the microelectrode arrays. A spatially controlled RPE layer damage that mimicked cell loss in AMD disease was then initiated. Post recovery, significant differences (P < 0.01) in migration rates were found between case (8.6 ± 0.46 μm/h) and control cell lines (10.69 ± 0.21 μm/h). Quantitative data analysis suggested this was achieved due to lower cell-substrate adhesion in the control cell line. The ECIS cell-substrate adhesion parameter (α) was found to be 7.8 ± 0.28 Ω(1/2)cm for the case cell line and 6.5 ± 0.15 Ω(1/2)cm for the control. These findings were confirmed using cell adhesion biochemical assays. The developed disease model-on-a-chip is a powerful platform for translational studies with considerable potential to investigate novel therapies by enabling real-time, quantitative and reproducible patient-specific RPE cell repair studies.
Collapse
Affiliation(s)
- W Gamal
- Institute for Bioengineering, School of Engineering, The University of Edinburgh, EH9 3DW, United Kingdom
| | - S Borooah
- MRC Centre for Regenerative Medicine, The University of Edinburgh, EH16 4UU, United Kingdom; Centre for Clinical Brain Sciences, The University of Edinburgh, EH16 4SB, United Kingdom; Euan MacDonald Centre for MND Research, The University of Edinburgh, EH16 4SB, United Kingdom; Centre for Neuroregeneration, The University of Edinburgh, EH16 4SB, United Kingdom; The Anne Rowling Regenerative Neurology Clinic, The University of Edinburgh, EH16 4SB, United Kingdom
| | - S Smith
- Institute for Bioengineering, School of Engineering, The University of Edinburgh, EH9 3DW, United Kingdom
| | - I Underwood
- Institute for Integrated Micro and Nano Systems, School of Engineering, The University of Edinburgh, EH9 3JF, United Kingdom
| | - V Srsen
- Institute for Bioengineering, School of Engineering, The University of Edinburgh, EH9 3DW, United Kingdom
| | - S Chandran
- MRC Centre for Regenerative Medicine, The University of Edinburgh, EH16 4UU, United Kingdom; Centre for Clinical Brain Sciences, The University of Edinburgh, EH16 4SB, United Kingdom; Euan MacDonald Centre for MND Research, The University of Edinburgh, EH16 4SB, United Kingdom; Centre for Neuroregeneration, The University of Edinburgh, EH16 4SB, United Kingdom; The Anne Rowling Regenerative Neurology Clinic, The University of Edinburgh, EH16 4SB, United Kingdom
| | - P O Bagnaninchi
- MRC Centre for Regenerative Medicine, The University of Edinburgh, EH16 4UU, United Kingdom.
| | - B Dhillon
- Centre for Clinical Brain Sciences, The University of Edinburgh, EH16 4SB, United Kingdom; The Anne Rowling Regenerative Neurology Clinic, The University of Edinburgh, EH16 4SB, United Kingdom; School of Clinical Sciences, The University of Edinburgh, EH16 4SB, United Kingdom
| |
Collapse
|
42
|
Su CM, Chiang YC, Huang CY, Hsu CJ, Fong YC, Tang CH. Osteopontin Promotes Oncostatin M Production in Human Osteoblasts: Implication of Rheumatoid Arthritis Therapy. THE JOURNAL OF IMMUNOLOGY 2015; 195:3355-64. [PMID: 26304992 DOI: 10.4049/jimmunol.1403191] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Accepted: 07/23/2015] [Indexed: 12/21/2022]
Abstract
Accumulating evidence indicates that subchondral bone might play an essential role in rheumatoid arthritis (RA). Osteopontin (OPN) induces the production of an important proinflammatory cytokine involved in the pathogenesis of RA. This study evaluated the activation of oncostatin M (OSM) by OPN in human primary osteoblasts to understand RA pathogenesis and characterized the intracellular signaling pathways involved in this activation. Quantitative PCR, ELISA, and Western blot results indicated that stimulation of human primary osteoblasts with OPN induces OSM expression through αvβ3 integrin/c-Src/platelet-derived growth factor receptor transactivation/MEK/ERK. Treatment of osteoblasts with OPN also increased c-Jun phosphorylation, AP-1 luciferase activity, and c-Jun binding to the AP-1 element on the OSM promoter, as demonstrated using chromatin immunoprecipitation assay. Moreover, inhibition of OPN expression using lentiviral-OPN short hairpin RNA resulted in the amelioration of articular swelling, cartilage erosion, and OSM expression in the ankle joint of mice with collagen-induced arthritis as shown using microcomputed tomography and immunohistochemistry staining. Our results imply that OSM expression in osteoblasts increases in response to OPN-induced inflammation in vitro. Finally, lentiviral-OPN short hairpin RNA ameliorates the inflammatory response and bone destruction in mice with collagen-induced arthritis. Therefore, OPN may be a potential therapeutic target for RA.
Collapse
Affiliation(s)
- Chen-Ming Su
- Department of Biomedical Sciences Laboratory, Affiliated Dongyang Hospital of Wenzhou Medical University, Dongyang, Zhejiang, China 322100; Graduate Institute of Basic Medical Science, China Medical University, Taichung, Taiwan 40466
| | - Yi-Chun Chiang
- Graduate Institute of Basic Medical Science, China Medical University, Taichung, Taiwan 40466
| | - Chun-Yin Huang
- Graduate Institute of Clinical Medical Science, China Medical University, Taichung, Taiwan 40466; Department of Orthopedic Surgery, China Medical University Beigang Hospital, Yun-Lin County, Taiwan 65142
| | - Chin-Jung Hsu
- School of Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung, Taiwan 40466; Department of Orthopedic Surgery, China Medical University Hospital, Taichung, Taiwan 40466
| | - Yi-Chin Fong
- School of Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung, Taiwan 40466; Department of Orthopedic Surgery, China Medical University Hospital, Taichung, Taiwan 40466
| | - Chih-Hsin Tang
- Graduate Institute of Basic Medical Science, China Medical University, Taichung, Taiwan 40466; Department of Pharmacology, School of Medicine, China Medical University, Taichung, Taiwan 40466; and Department of Biotechnology, College of Health Science, Asia University, Taichung, Taiwan 40466
| |
Collapse
|
43
|
Polyphenols as Modulators of Aquaporin Family in Health and Disease. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2015; 2015:196914. [PMID: 26346093 PMCID: PMC4539495 DOI: 10.1155/2015/196914] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Accepted: 07/21/2015] [Indexed: 11/24/2022]
Abstract
Polyphenols are bioactive molecules widely distributed in fruits, vegetables, cereals, and beverages. Polyphenols in food sources are extensively studied for their role in the maintenance of human health and in the protection against development of chronic/degenerative diseases. Polyphenols act mainly as antioxidant molecules, protecting cell constituents against oxidative damage. The enormous number of polyphenolic compounds leads to huge different mechanisms of action not fully understood. Recently, some evidence is emerging about the role of polyphenols, such as curcumin, pinocembrin, resveratrol, and quercetin, in modulating the activity of some aquaporin (AQP) isoforms. AQPs are integral, small hydrophobic water channel proteins, extensively expressed in many organs and tissues, whose major function is to facilitate the transport of water or glycerol over cell plasma membranes. Here we summarize AQP physiological functions and report emerging evidence on the implication of these proteins in a number of pathophysiological processes. In particular, this review offers an overview about the role of AQPs in brain, eye, skin diseases, and metabolic syndrome, focusing on the ability of polyphenols to modulate AQP expression. This original analysis can contribute to elucidating some peculiar effects exerted by polyphenols and can lead to the development of an innovative potential preventive/therapeutic strategy.
Collapse
|
44
|
Pastor JC, Rojas J, Pastor-Idoate S, Di Lauro S, Gonzalez-Buendia L, Delgado-Tirado S. Proliferative vitreoretinopathy: A new concept of disease pathogenesis and practical consequences. Prog Retin Eye Res 2015. [PMID: 26209346 DOI: 10.1016/j.preteyeres.2015.07.005] [Citation(s) in RCA: 199] [Impact Index Per Article: 22.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
During the last four decades, proliferative vitreoretinopathy (PVR) has defied the efforts of many researchers to prevent its occurrence or development. Thus, PVR is still the major complication following retinal detachment (RD) surgery and a bottle-neck for advances in cell therapy that require intraocular surgery. In this review we tried to combine basic and clinical knowledge, as an example of translational research, providing new and practical information for clinicians. PVR was defined as the proliferation of cells after RD. This idea was used for classifying PVR and also for designing experimental models used for testing many drugs, none of which were successful in humans. We summarize current information regarding the pathogenic events that follow any RD because this information may be the key for understanding and treating the earliest stages of PVR. A major focus is made on the intraretinal changes derived mainly from retinal glial cell reactivity. These responses can lead to intraretinal PVR, an entity that has not been clearly recognized. Inflammation is one of the major components of PVR, and we describe new genetic biomarkers that have the potential to predict its development. New treatment approaches are analyzed, especially those directed towards neuroprotection, which can also be useful for preventing visual loss after any RD. We also summarize the results of different surgical techniques and clinical information that is oriented toward the identification of high risk patients. Finally, we provide some recommendations for future classification of PVR and for designing comparable protocols for testing new drugs or techniques.
Collapse
Affiliation(s)
- J Carlos Pastor
- Retina Group, IOBA (Eye Institute), University of Valladolid, Valladolid, Spain; Department of Ophthalmology, Hospital Clinico Universitario de Valladolid, Valladolid, Spain.
| | - Jimena Rojas
- Retina Group, IOBA (Eye Institute), University of Valladolid, Valladolid, Spain; Department of Ophthalmology, Hospital Universitario Austral, Universidad Austral, Buenos Aires, Argentina
| | - Salvador Pastor-Idoate
- Retina Group, IOBA (Eye Institute), University of Valladolid, Valladolid, Spain; Manchester Royal Eye Hospital, Manchester Vision Regeneration (MVR) Lab at NIHR/Wellcome Trust, Manchester, United Kingdom
| | - Salvatore Di Lauro
- Retina Group, IOBA (Eye Institute), University of Valladolid, Valladolid, Spain; Department of Ophthalmology, Hospital Clinico Universitario de Valladolid, Valladolid, Spain
| | - Lucia Gonzalez-Buendia
- Retina Group, IOBA (Eye Institute), University of Valladolid, Valladolid, Spain; Department of Ophthalmology, Hospital Clinico Universitario de Valladolid, Valladolid, Spain
| | - Santiago Delgado-Tirado
- Retina Group, IOBA (Eye Institute), University of Valladolid, Valladolid, Spain; Department of Ophthalmology, Hospital Clinico Universitario de Valladolid, Valladolid, Spain
| |
Collapse
|
45
|
Polyphenol Stilbenes: Molecular Mechanisms of Defence against Oxidative Stress and Aging-Related Diseases. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2015; 2015:340520. [PMID: 26180583 PMCID: PMC4477219 DOI: 10.1155/2015/340520] [Citation(s) in RCA: 134] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2014] [Accepted: 01/21/2015] [Indexed: 12/13/2022]
Abstract
Numerous studies have highlighted the key roles of oxidative stress and inflammation in aging-related diseases such as obesity, type 2 diabetes, age-related macular degeneration (AMD), and Alzheimer's disease (AD). In aging cells, the natural antioxidant capacity decreases and the overall efficiency of reparative systems against cell damage becomes impaired. There is convincing data that stilbene compounds, a diverse group of natural defence phenolics, abundant in grapes, berries, and conifer bark waste, may confer a protective effect against aging-related diseases. This review highlights recent data helping to clarify the molecular mechanisms involved in the stilbene-mediated protection against oxidative stress. The impact of stilbenes on the nuclear factor-erythroid-2-related factor-2 (Nrf2) mediated cellular defence against oxidative stress as well as the potential roles of SQSTM1/p62 protein in Nrf2/Keap1 signaling and autophagy will be summarized. The therapeutic potential of stilbene compounds against the most common aging-related diseases is discussed.
Collapse
|
46
|
Anti-Restenotic Roles of Dihydroaustrasulfone Alcohol Involved in Inhibiting PDGF-BB-Stimulated Proliferation and Migration of Vascular Smooth Muscle Cells. Mar Drugs 2015; 13:3046-60. [PMID: 25988521 PMCID: PMC4446617 DOI: 10.3390/md13053046] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2015] [Revised: 05/03/2015] [Accepted: 05/05/2015] [Indexed: 01/23/2023] Open
Abstract
Dihydroaustrasulfone alcohol (DA), an active compound firstly isolated from marine corals, has been reported to reveal anti-cancer and anti-inflammation activities. These reported activities of DA raised a possible application in anti-restenosis. Abnormal proliferation and migration of vascular smooth muscle cells (VSMCs) and the stimulation of platelet-derived growth factor (PDGF)-BB play major pathological processes involved in the development of restenosis. Experimental results showed that DA markedly reduced balloon injury-induced neointima formation in the rat carotid artery model and significantly inhibited PDGF-BB-stimulated proliferation and migration of VSMCs. Our data further demonstrated that translational and active levels of several critical signaling cascades involved in VSMC proliferation, such as extracellular signal-regulated kinase/mitogen-activated protein kinases (ERK/MAPK), phosphatidylinositol 3-kinase (PI3K)/AKT, and signal transducer and activator of transcription (STAT), were obviously inhibited. In addition, DA also decreased the activation and expression levels of gelatinases (matrix metalloproteinase (MMP)-2 and MMP-9) involved in cell migration. In conclusion, our findings indicate that DA can reduce balloon injury-neointimal hyperplasia, the effect of which may be modulated through suppression of VSMC proliferation and migration. These results suggest that DA has potential application as an anti-restenotic agent for the prevention of restenosis.
Collapse
|
47
|
Chan CM, Huang CH, Li HJ, Hsiao CY, Su CC, Lee PL, Hung CF. Protective effects of resveratrol against UVA-induced damage in ARPE19 cells. Int J Mol Sci 2015; 16:5789-802. [PMID: 25775159 PMCID: PMC4394506 DOI: 10.3390/ijms16035789] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Revised: 02/25/2015] [Accepted: 03/04/2015] [Indexed: 02/03/2023] Open
Abstract
Ultraviolet radiation, especially UVA, can penetrate the lens, reach the retina, and induce oxidative stress to retinal pigment epithelial (RPE) cells. Even though it is weakly absorbed by protein and DNA, it may trigger the production of reactive oxygen species (ROS) and generate oxidative injury; oxidative injury to the retinal pigment epithelium has been implicated to play a contributory role in age-related macular degeneration (AMD). Studies showed that resveratrol, an abundant and active component of red grapes, can protect several cell types from oxidative stress. In this study, adult RPE cells being treated with different concentrations of resveratrol were used to evaluate the protective effect of resveratrol on RPE cells against UVA-induced damage. Cell viability assay showed that resveratrol reduced the UVA-induced decrease in RPE cell viability. Through flow cytometry analysis, we found that the generation of intracellular H2O2 induced by UVA irradiation in RPE cells could be suppressed by resveratrol in a concentration-dependent manner. Results of Western blot analysis demonstrated that resveratrol lowered the activation of UVA-induced extracellular signal-regulated kinase, c-jun-NH2 terminal kinase and p38 kinase in RPE cells. In addition, there was also a reduction in UVA-induced cyclooxygenase-2 (COX-2) expression in RPE cells pretreated with resveratrol. Our observations suggest that resveratrol is effective in preventing RPE cells from being damaged by UVA radiation, and is worth considering for further development as a chemoprotective agent for the prevention of early AMD.
Collapse
Affiliation(s)
- Chi-Ming Chan
- School of Medicine, Fu Jen Catholic University, New Taipei City 24205, Taiwan.
- Department of Ophthalmology, Cardinal Tien Hospital, Hsiendian, New Taipei City 23148, Taiwan.
| | - Cheng-Hua Huang
- School of Medicine, Fu Jen Catholic University, New Taipei City 24205, Taiwan.
- Department of Internal Medicine, Cathay General Hospital, Taipei 10630, Taiwan.
| | - Hsin-Ju Li
- Department of Chemstry, Fu Jen Catholic University, New Taipei City 24205, Taiwan.
| | - Chien-Yu Hsiao
- Department of Nutrition and Health Sciences, Chang Gung University of Science and Technology, Kweishan, Taoyuan 33303, Taiwan.
- Research center for Industry of Human Ecology, Chang Gung University of Science and Technology, Kweishan, Taoyuan 33303, Taiwan.
| | - Ching-Chieh Su
- School of Medicine, Fu Jen Catholic University, New Taipei City 24205, Taiwan.
- Graduate Institute of Applied Science and Engineering, Fu Jen Catholic University, New Taipei City 24205, Taiwan.
- Department of Internal Medicine, Cardinal Tien Hospital, Hsiendian, New Taipei City 23148, Taiwan.
| | - Pei-Lan Lee
- Slone Epidemiology Center, Boston University, Boston, MA 02215, USA.
| | - Chi-Feng Hung
- School of Medicine, Fu Jen Catholic University, New Taipei City 24205, Taiwan.
| |
Collapse
|
48
|
Wang S, Lu A, Chen X, Wei L, Ding J. RABEX-5 is upregulated and plays an oncogenic role in gastric cancer development by activating the VEGF signaling pathway. PLoS One 2014; 9:e113891. [PMID: 25427001 PMCID: PMC4245226 DOI: 10.1371/journal.pone.0113891] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Accepted: 10/31/2014] [Indexed: 12/22/2022] Open
Abstract
RABEX-5, a guanine-nucleotide exchange factor (GEF) for RAB-5, is implicated in tumorigenesis and in the development of certain human cancers. Here, we report that RABEX-5 promotes tumor growth and the metastatic ability of gastric cancer cells both in vitro and in vivo. Expression of RABEX-5 is significantly higher in gastric cancer tissues and is associated with tumor size and lymph node metastasis. In addition, targeted silencing of RABEX-5 reduced gastric cancer cell proliferation and colony formation in vitro via the induction of a G0/G1 phase arrest, and stimulated gastric cancer cell apoptosis. Knockdown of RABEX-5 also inhibited wound healing, migration and the invasive abilities of gastric cancer cells. The results of in vivo animal experiments were also consistent with these in vitro findings. Silencing of RABEX-5 led to decreased expression of VEGF. These results indicate that RABEX-5 is upregulated and plays an oncogenic role in gastric cancer development by activating the VEGF signaling pathway.
Collapse
Affiliation(s)
- Shuang Wang
- Department of Clinical Oncology, The Central Hospital of Taian, Taian, Shangdong, People's Republic of China
| | - Aixia Lu
- Department of Nursing, The Central Hospital of Taian, Taian, Shangdong, People's Republic of China
| | - Xiangming Chen
- Department of Clinical Oncology, The Central Hospital of Taian, Taian, Shangdong, People's Republic of China
| | - Lin Wei
- Department of Clinical Oncology, The Central Hospital of Taian, Taian, Shangdong, People's Republic of China
| | - Jiqiang Ding
- Department of Radiation Oncology, The Cancer Prevention and Control Hospital of Taian, Taian, Shangdong, People's Republic of China
| |
Collapse
|
49
|
Wang Y, Yuan Z, You C, Han J, Li H, Zhang Z, Yan H. Overexpression p21WAF1/CIP1 in suppressing retinal pigment epithelial cells and progression of proliferative vitreoretinopathy via inhibition CDK2 and cyclin E. BMC Ophthalmol 2014; 14:144. [PMID: 25421815 PMCID: PMC4255444 DOI: 10.1186/1471-2415-14-144] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2014] [Accepted: 11/14/2014] [Indexed: 02/09/2023] Open
Abstract
Background P21 is one kind of cyclin-dependent kinase inhibitor that can prevent cells from going through the G1/S phase checkpoint and inhibit cell proliferation. Proliferative vitreoretinopathy (PVR) is a proliferative response in the eye. The aim of this study was to determine whether p21Waf1/Cip1 (p21) suppresses the proliferation and migration of retinal pigment epithelial (RPE) cells in vitro and controls PVR development in vivo. Methods Cell cycle analyses and transwell assays were conducted to assess cell proliferation characteristics and the migration ability of RPE cells after transfection with p21. Western blot and reverse-transcription polymerase chain reaction technologies were used to detect the expression of p21, CDK2 and cyclinE in RPE cells and rabbit retinal tissues. The impact of increasing p21 expression on PVR development was conducted by implantation of an adenovirus vector containing rabbit p21 (rAd-p21) in a PVR rabbit model. The prevalence of PVR and retinal detachment was determined by indirect ophthalmoscopy on days 3, 7, 14, and 21 after the injection of rAd-p21 into the vitreous. B scans and hematoxylin-eosin staining were employed to check rabbit retinas on day 21. Results Cell cycle analyses and transwell assays showed that p21 inhibited the proliferation and migration of RPE cells. Increased expression of p21 was detected in cultured RPE cells and rabbit retinas after transfection with the p21 gene, whereas levels of CDK2 and cyclinE were decreased. The increase in p21 expression effectively suppressed the development of PVR in a rabbit model. Conclusions The increase in p21 expression in RPE cells not only inhibits the proliferation and migration of RPE cells in vitro, but also suppresses the development of PVR in vivo, which indicates its therapeutic potential in treating PVR.
Collapse
Affiliation(s)
| | | | | | | | | | | | - Hua Yan
- Department of Ophthalmology, Tianjin Medical University General Hospital, Tianjin 300052, China.
| |
Collapse
|
50
|
Su CC, Chan CM, Chen HM, Wu CC, Hsiao CY, Lee PL, Lin VCH, Hung CF. Lutein inhibits the migration of retinal pigment epithelial cells via cytosolic and mitochondrial Akt pathways (lutein inhibits RPE cells migration). Int J Mol Sci 2014; 15:13755-67. [PMID: 25110866 PMCID: PMC4159823 DOI: 10.3390/ijms150813755] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2014] [Revised: 07/16/2014] [Accepted: 07/25/2014] [Indexed: 11/17/2022] Open
Abstract
During the course of proliferative vitreoretinopathy (PVR), the retinal pigment epithelium (RPE) cells will de-differentiate, proliferate, and migrate onto the surfaces of the sensory retina. Several studies have shown that platelet-derived growth factor (PDGF) can induce migration of RPE cells via an Akt-related pathway. In this study, the effect of lutein on PDGF-BB-induced RPE cells migration was examined using transwell migration assays and Western blot analyses. We found that both phosphorylation of Akt and mitochondrial translocation of Akt in RPE cells induced by PDGF-BB stimulation were suppressed by lutein. Furthermore, the increased migration observed in RPE cells with overexpressed mitochondrial Akt could also be suppressed by lutein. Our results demonstrate that lutein can inhibit PDGF-BB induced RPE cells migration through the inhibition of both cytoplasmic and mitochondrial Akt activation.
Collapse
Affiliation(s)
- Ching-Chieh Su
- Graduate Institute of Applied Science and Engineering, Fu Jen Catholic University,New Taipei City 24205, Taiwan.
| | - Chi-Ming Chan
- School of Medicine, Fu Jen Catholic University, New Taipei City 24205, Taiwan.
| | - Han-Min Chen
- Graduate Institute of Applied Science and Engineering, Fu Jen Catholic University,New Taipei City 24205, Taiwan.
| | - Chia-Chun Wu
- Department of Life Sciences, Fu Jen Catholic University, New Taipei City 24205, Taiwan.
| | - Chien-Yu Hsiao
- Department of Nutrition and Health Science, Chang Guang University of Science and Technology,Taoyuan 33303, Taiwan.
| | - Pei-Lan Lee
- Slone Epidemiology Center, Boston University, Boston, Massachusetts, United States of America,Boston, MA 02215, USA.
| | - Victor Chia-Hsiang Lin
- Graduate Institute of Applied Science and Engineering, Fu Jen Catholic University,New Taipei City 24205, Taiwan.
| | - Chi-Feng Hung
- School of Medicine, Fu Jen Catholic University, New Taipei City 24205, Taiwan.
| |
Collapse
|