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Ansari WA, Khan MA, Hasan SMM, Siddiqui Z, Ahmad S, Khan MS, Khan MF. Computational screening of chemical constituents derived from berry fruits as allosteric caspace-3/-7 inhibitors. 3 Biotech 2024; 14:234. [PMID: 39297056 PMCID: PMC11405617 DOI: 10.1007/s13205-024-04067-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2024] [Accepted: 08/23/2024] [Indexed: 09/21/2024] Open
Abstract
With the aim of finding the plant-derived allosteric inhibitors of caspase-3/-7, we conducted computational investigations of bioactive compounds present in various berry fruits. In a molecular docking study, perulactone demonstrated excellent binding affinity scores of -12.1 kcal/mol and -9.1 kcal/mol for caspase 7 and 3, respectively, whereas FDA-approved allosteric inhibitors (DICA and FICA) were found to show lower docking scores (-5.6 and -6.1 kcal/mol) against caspase 7 while (-5.0 and -5.1 kcal/mol) for caspase 3, respectively. MD simulations were used to validate the binding stability of perulactone in the active sites of caspase-7/-3, and the results showed outstanding stability with lower ligand RMSDs of 1.270-3.088 Å and 2.426-9.850 Å against the targeted receptor. Furthermore, we performed MMGBSA free binding energy, where the perulactone values of ΔG Bind were determined to be -63.98 kcal/mol and -66.32 kcal/mol for both receptors (3IBF and 1NME), which are significantly better than the -45.16 kcal/mol and -39.51 kcal/mol for DICA as well as -26.37 kcal/mol and -15.50 kcal/mol for FICA, respectively. The drug resemblance of perulactone was effectively evaluated by ADMET. Thus, our findings indicated that perulactone could be an orally administered therapeutic candidate for regulating apoptosis in a variety of disorders. However, there may be an urgent need to study using in vitro and in vivo experiments. Supplementary Information The online version contains supplementary material available at 10.1007/s13205-024-04067-7.
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Affiliation(s)
- Waseem Ahmad Ansari
- Department of Biotechnology, Era’s Lucknow Medical College & Hospital, Era University, Sarfarazganj, Hardoi Road, Lucknow, 226003 India
| | - Mohsin Ali Khan
- Center for Disease Mapping and Therapeutic Research, Era’s Lucknow Medical College & Hospital, Era University, Sarfarazganj, Hardoi Road, Lucknow, 226003 India
| | - S. M. Mahfooz Hasan
- Center for Disease Mapping and Therapeutic Research, Era’s Lucknow Medical College & Hospital, Era University, Sarfarazganj, Hardoi Road, Lucknow, 226003 India
| | - Zainab Siddiqui
- Center for Disease Mapping and Therapeutic Research, Era’s Lucknow Medical College & Hospital, Era University, Sarfarazganj, Hardoi Road, Lucknow, 226003 India
| | - Saheem Ahmad
- Department of Medical Laboratory Science, College of Applied Medical Sciences, University of Hail, 2440 Hail, Saudi Arabia
| | - Mohd Shahnawaz Khan
- Department of Biochemistry, College of Sciences, King Saud University, 12371 Riyadh, Saudi Arabia
| | - Mohammad Faheem Khan
- Department of Biotechnology, Era’s Lucknow Medical College & Hospital, Era University, Sarfarazganj, Hardoi Road, Lucknow, 226003 India
- Department of Chemistry, Era University, Sarfarazganj, Hardoi Road, Lucknow, 226003 India
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Picard E, Youale J, Hyman MJ, Xie E, Achiedo S, Kaufmann GT, Moir J, Daruich A, Crisanti P, Torriglia A, Polak M, Behar-Cohen F, Skondra D, Berdugo M. Glyburide confers neuroprotection against age-related macular degeneration (AMD). Transl Res 2024; 272:81-94. [PMID: 38815899 DOI: 10.1016/j.trsl.2024.05.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2023] [Revised: 04/20/2024] [Accepted: 05/03/2024] [Indexed: 06/01/2024]
Abstract
Glyburide, a sulfonylurea drug used to treat type 2 diabetes, boasts neuroprotective effects by targeting the sulfonylurea receptor 1 (SUR1) and associated ion channels in various cell types, including those in the central nervous system and the retina. Previously, we demonstrated that glyburide therapy improved retinal function and structure in a rat model of diabetic retinopathy. In the present study, we explore the application of glyburide in non-neovascular ("dry") age-related macular degeneration (AMD), another progressive disease characterized by oxidative stress-induced damage and neuroinflammation that trigger cell death in the retina. We show that glyburide administration to a human cone cell line confers protection against oxidative stress, inflammasome activation, and apoptosis. To corroborate our in vitro results, we also conducted a case-control study, controlling for AMD risk factors and other diabetes medications. It showed that glyburide use in patients reduces the odds of new-onset dry AMD. A positive dose-response relationship is observed from this analysis, in which higher cumulative doses of glyburide further reduce the odds of new-onset dry AMD. In the quest for novel therapies for AMD, glyburide emerges as a promising repurposable drug given its known safety profile. The results from this study provide insights into the multifaceted actions of glyburide and its potential as a neuroprotective agent for retinal diseases; however, further preclinical and clinical studies are needed to validate its therapeutic potential in the context of degenerative retinal disorders such as AMD.
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Affiliation(s)
- Emilie Picard
- Inserm UMRS1138, Team 1: Physiopathology of ocular diseases-Therapeutic innovations, Centre de Recherche des Cordeliers, Paris, France; Sorbonne Université UMR_S 1138, Centre de Recherche des Cordeliers, Paris, France; Université Paris Cité, Faculté de Santé, Paris, France
| | - Jenny Youale
- Inserm UMRS1138, Team 1: Physiopathology of ocular diseases-Therapeutic innovations, Centre de Recherche des Cordeliers, Paris, France; Sorbonne Université UMR_S 1138, Centre de Recherche des Cordeliers, Paris, France; Université Paris Cité, Faculté de Santé, Paris, France
| | - Max J Hyman
- enter for Health and the Social Sciences, University of Chicago, Chicago, Illinois
| | - Edward Xie
- Stony Brook University Hospital, Stony Brook, NY
| | - Seiki Achiedo
- Inserm UMRS1138, Team 1: Physiopathology of ocular diseases-Therapeutic innovations, Centre de Recherche des Cordeliers, Paris, France; Sorbonne Université UMR_S 1138, Centre de Recherche des Cordeliers, Paris, France; Université Paris Cité, Faculté de Santé, Paris, France
| | | | - John Moir
- Pritzker School of Medicine, University of Chicago, Chicago, Illinois
| | - Alejandra Daruich
- Inserm UMRS1138, Team 1: Physiopathology of ocular diseases-Therapeutic innovations, Centre de Recherche des Cordeliers, Paris, France; Sorbonne Université UMR_S 1138, Centre de Recherche des Cordeliers, Paris, France; Université Paris Cité, Faculté de Santé, Paris, France; AP-HP, Service d'Ophtalmologie, Hôpital universitaire Necker-Enfants Malades, Paris, France
| | - Patricia Crisanti
- Inserm UMRS1138, Team 1: Physiopathology of ocular diseases-Therapeutic innovations, Centre de Recherche des Cordeliers, Paris, France; Sorbonne Université UMR_S 1138, Centre de Recherche des Cordeliers, Paris, France; Université Paris Cité, Faculté de Santé, Paris, France
| | - Alicia Torriglia
- Inserm UMRS1138, Team 1: Physiopathology of ocular diseases-Therapeutic innovations, Centre de Recherche des Cordeliers, Paris, France; Sorbonne Université UMR_S 1138, Centre de Recherche des Cordeliers, Paris, France; Université Paris Cité, Faculté de Santé, Paris, France
| | - Michel Polak
- AP-HP, Service d'endocrinologie, diabétologie et gynécologie pédiatriques, Hôpital universitaire Necker-Enfants Malades, Paris, France; Inserm U1016, Institut Cochin, Paris, France; Inserm UMR 1163, Institut Imagine, Université Paris Cité, Paris, France
| | - Francine Behar-Cohen
- Inserm UMRS1138, Team 1: Physiopathology of ocular diseases-Therapeutic innovations, Centre de Recherche des Cordeliers, Paris, France; Sorbonne Université UMR_S 1138, Centre de Recherche des Cordeliers, Paris, France; Université Paris Cité, Faculté de Santé, Paris, France; AP-HP, OphtalmoPôle, Hôpital Cochin, Department of Ophthalmology and Visual Science, Paris, France.
| | - Dimitra Skondra
- Department of Ophthalmology and Visual Science, University of Chicago, Chicago, Illinois
| | - Marianne Berdugo
- Inserm UMRS1138, Team 1: Physiopathology of ocular diseases-Therapeutic innovations, Centre de Recherche des Cordeliers, Paris, France; Sorbonne Université UMR_S 1138, Centre de Recherche des Cordeliers, Paris, France; Université Paris Cité, Faculté de Santé, Paris, France
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Kaur B, Miglioranza Scavuzzi B, Yang M, Yao J, Jia L, Abcouwer SF, Zacks DN. ER Stress and Mitochondrial Perturbations Regulate Cell Death in Retinal Detachment: Exploring the Role of HIF1α. Invest Ophthalmol Vis Sci 2024; 65:39. [PMID: 39325470 PMCID: PMC11437674 DOI: 10.1167/iovs.65.11.39] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/27/2024] Open
Abstract
Purpose Retinal detachment (RD) leads to photoreceptor (PR) hypoxia due to separation from the retinal pigment epithelium (RPE). Hypoxia stabilizes retinal hypoxia-inducible factor 1-alpha (HIF1α), crucial for PR survival during RD. This study explores the regulatory role of HIF1α in PR cell survival pathways during RD. Methods Experimental RD was created in C57BL/6J and HIF1αΔrod mice by injecting 1% hyaluronic acid into the subretinal space. The 661W photoreceptor cells were exposed to hypoxic conditions. Markers of endoplasmic reticulum stress (ERS), mitophagy, and accumulation of polyubiquinated proteins were evaluated using RT-PCR and western blot analyses. Cell death of PR cells was quantified using trypan blue exclusion assay and TUNEL staining. Retinal cell death was assessed using a DNA fragmentation assay. Results In C57BL/6J mice and 661W cells, there were increases in HIF1α protein levels: 2.2-fold after RD (P = 0.04) and threefold after hypoxia (P = 0.057). Both the in vivo and in vitro RD models showed increased protein expression of ERS markers (including BIP, CHOP, and IRE1α), mitophagy markers (Parkin, PINK, and FUNDC1), and polyubiquitinated proteins. In 661W cells, hypoxia resulted in a loss of mitochondrial membrane potential, an increase in mitochondrial reactive oxygen species, and a decrease in intracellular adenosine triphosphate levels. Lack of HIF1α in rods blocked the upregulation of mitophagy markers after RD. Conclusions RD results in the activation of ERS, mitophagy, mitochondrial dysfunction, and accumulation of polyubiquitinated proteins. Results suggest a role for HIF1α in activation of the mitophagy pathway after RD, which may serve to protect the PR cells.
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Affiliation(s)
- Bhavneet Kaur
- Kellogg Eye Center, Department of Ophthalmology and Visual Sciences, University of Michigan, Ann Arbor, Michigan, United States
| | - Bruna Miglioranza Scavuzzi
- Kellogg Eye Center, Department of Ophthalmology and Visual Sciences, University of Michigan, Ann Arbor, Michigan, United States
| | - Mengling Yang
- Kellogg Eye Center, Department of Ophthalmology and Visual Sciences, University of Michigan, Ann Arbor, Michigan, United States
| | - Jingyu Yao
- Kellogg Eye Center, Department of Ophthalmology and Visual Sciences, University of Michigan, Ann Arbor, Michigan, United States
| | - Lin Jia
- Kellogg Eye Center, Department of Ophthalmology and Visual Sciences, University of Michigan, Ann Arbor, Michigan, United States
| | - Steven F Abcouwer
- Kellogg Eye Center, Department of Ophthalmology and Visual Sciences, University of Michigan, Ann Arbor, Michigan, United States
| | - David N Zacks
- Kellogg Eye Center, Department of Ophthalmology and Visual Sciences, University of Michigan, Ann Arbor, Michigan, United States
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Yang M, Yao J, Jia L, Kocab AJ, Zacks DN. Preservation of retinal structure and function in two mouse models of inherited retinal degeneration by ONL1204, an inhibitor of the Fas receptor. Cell Death Dis 2024; 15:576. [PMID: 39117629 PMCID: PMC11310419 DOI: 10.1038/s41419-024-06970-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Revised: 07/30/2024] [Accepted: 08/01/2024] [Indexed: 08/10/2024]
Abstract
Due to the large number of genes and mutations that result in inherited retinal degenerations (IRD), there has been a paucity of therapeutic options for these patients. There is a large unmet need for therapeutic approaches targeting shared pathophysiologic pathways in a mutation-independent manner. The Fas receptor is a major activator and regulator of retinal cell death and inflammation in a variety of ocular diseases. We previously reported the activation of Fas-mediated photoreceptor (PR) cell death in two different IRD mouse models, rd10 and P23H, and demonstrated the protective effect of genetic Fas inhibition. The purpose of this study was to examine the effects of pharmacologic inhibition of Fas in these two models by intravitreal injection with a small peptide inhibitor of the Fas receptor, ONL1204. A single intravitreal injection of ONL1204 was given to one eye of rd10 mice at P14. Two intravitreal injections of ONL1204 were given to the P23H mice, once at P14 and again at 2-months of age. The fellow eyes were injected with vehicle alone. Fas activation, rate of PR cell death, retinal function, and the activation of immune cells in the retina were evaluated. In both rd10 and P23H mice, ONL1204 treatment resulted in decreased number of TUNEL (+) PRs, decreased caspase 8 activity, enhanced photoreceptor cell counts, and improved visual function compared with vehicle treated fellow eyes. Treatment with ONL1204 also reduced immune cell activation in the retinas of both rd10 and P23H mice. The protective effect of pharmacologic inhibition of Fas by ONL1204 in two distinct mouse models of retinal degeneration suggests that targeting this common pathophysiologic mechanism of cell death and inflammation represents a potential therapeutic approach to preserve the retina in patients with IRD, regardless of the genetic underpinning.
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Affiliation(s)
- Mengling Yang
- Department of Ophthalmology and Visual Sciences, University of Michigan, Kellogg Eye Center, Ann Arbor, MI, USA
- Eye Center of Xiangya Hospital, Xiangya School of medicine, Central South University, Changsha, Hunan, China
| | - Jingyu Yao
- Department of Ophthalmology and Visual Sciences, University of Michigan, Kellogg Eye Center, Ann Arbor, MI, USA
| | - Lin Jia
- Department of Ophthalmology and Visual Sciences, University of Michigan, Kellogg Eye Center, Ann Arbor, MI, USA
| | | | - David N Zacks
- Department of Ophthalmology and Visual Sciences, University of Michigan, Kellogg Eye Center, Ann Arbor, MI, USA.
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Xu L, Xu Y, Jiang Y, Jiang J, Chen S, Sun D, Li S, Wei F, Zhu H. IP3R2 regulates apoptosis by Ca2+ transfer through mitochondria-ER contacts in hypoxic photoreceptor injury. Exp Eye Res 2024; 245:109965. [PMID: 38851477 DOI: 10.1016/j.exer.2024.109965] [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: 12/22/2023] [Revised: 06/04/2024] [Accepted: 06/05/2024] [Indexed: 06/10/2024]
Abstract
Mitochondria-associated ER membranes (MAMs) are contact sites that enable bidirectional communication between the ER (endoplasmic reticulum) and mitochondria, including the transfer of Ca2+ signals. MAMs are essential for mitochondrial function and cellular energy metabolism. However, unrestrained Ca2+ transfer to the mitochondria can lead to mitochondria-dependent apoptosis. IP3R2 (Inositol 1,4,5-trisphosphate receptor 2) is an important intracellular Ca2+ channel. This study investigated the contribution of IP3R2-MAMs to hypoxia-induced apoptosis in photoreceptor cells. A photoreceptor hypoxia model was established by subretinal injection of hyaluronic acid (1%) in C57BL/6 mice and 1% O2 treatment in 661W cells. Transmission electron microscopy (TEM), ER-mitochondria colocalization, and the MAM reporter were utilized to evaluate MAM alterations. Cell apoptosis and mitochondrial homeostasis were evaluated using immunofluorescence (IF), flow cytometry, western blotting (WB), and ATP assays. SiRNA transfection was employed to silence IP3R2 in 661W cells. Upon hypoxia induction, MAMs were significantly increased in photoreceptors both in vivo and in vitro. This was accompanied by the activation of mitochondrial apoptosis and disruption of mitochondrial homeostasis. Elevated MAM-enriched IP3R2 protein levels induced by hypoxic injury led to mitochondrial calcium overload and subsequent photoreceptor apoptosis. Notably, IP3R2 knockdown not only improved mitochondrial morphology but also restored mitochondrial function in photoreceptors by limiting MAM formation and thereby attenuating mitochondrial calcium overload under hypoxia. Our results suggest that IP3R2-MAM-mediated mitochondrial calcium overload plays a critical role in mitochondrial dyshomeostasis, ultimately contributing to photoreceptor cell death. Targeting MAM constitutive proteins might provide an option for a therapeutic approach to mitigate photoreceptor death in retinal detachment.
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Affiliation(s)
- Li Xu
- Department of Ophthalmology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yihua Xu
- Department of Ophthalmology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yaoxu Jiang
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Jingjing Jiang
- Department of Ophthalmology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shimei Chen
- Department of Ophthalmology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Dandan Sun
- Department of Ophthalmology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shenping Li
- Department of Ophthalmology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Fang Wei
- Department of Ophthalmology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China; National Clinical Research Center for Eye Diseases, Shanghai Key Laboratory of Ocular Fundus Disease, Shanghai Engineering Center for Visual Science and Photomedicine, Shanghai Engineering Center for Precise Diagnosis and Treatment of Eye Diseases, Shanghai, China.
| | - Hong Zhu
- Department of Ophthalmology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China; National Clinical Research Center for Eye Diseases, Shanghai Key Laboratory of Ocular Fundus Disease, Shanghai Engineering Center for Visual Science and Photomedicine, Shanghai Engineering Center for Precise Diagnosis and Treatment of Eye Diseases, Shanghai, China.
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Tachibana T, Notomi S, Funatsu J, Fujiwara K, Nakatake S, Murakami Y, Nakao S, Kanamoto T, Ikeda Y, Ishibashi T, Sonoda KH, Hisatomi T. Intraocular kinetics of pathological ATP after photoreceptor damage in rhegmatogenous retinal detachment. Jpn J Ophthalmol 2024:10.1007/s10384-024-01087-x. [PMID: 39060674 DOI: 10.1007/s10384-024-01087-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 05/29/2024] [Indexed: 07/28/2024]
Abstract
PURPOSE Extracellular Adenosine triphosphate (ATP) released by dying cells may cause a secondary cell death in neighboring cells in retinal degeneration. We investigated intraocular ATP kinetics to gain mechanical insights into the pathology in rhegmatogenous retinal detachment (RRD). STUDY DESIGN Retrospective clinical study. METHODS Vitreous or subretinal fluids (SRF) were obtained from patients with RRD (n=75), macular hole (MH; n=20), and epiretinal membrane (ERM; n=35) during vitrectomy. ATP levels in those samples were measured by luciferase assay. RESULTS Mean ATP levels in the vitreous from RRD patients were significantly higher compared to those from MH and ERM patients (2.3 and 0.3 nM, respectively. P<0.01). Mean ATP levels in the SRF from RRD (11.7 nM) were higher than those in the vitreous from RRD (P<0.01). Mean ATP levels in the vitreous with short durations (1-8 days) of RRD were higher compared to those with long durations (>8 days) (3.2 and 1.4 nM, respectively. P<0.05). Similarly, ATP in SRF with short durations were higher than those with long durations (23.8 and 3.6 nM, respectively. P<0.05). Furthermore, the concentrations of ectonucleoside triphosphate diphosphohydrolase-1 (ENTPD1), a major ATP degradative enzyme, in the vitreous from RRD were higher than those from MH/ERM (1.2 and 0.2 ng/ml, respectively. P<0.01). ENTPD1 expression was localized in the cytoplasm of CD11b-positive infiltrating cells in the vitreous and retinal cells. CONCLUSION ATP increased in the vitreous and SRF in RRD and decreased over time with an upregulation of ENTPD1. The kinetics indicate the pathological mechanism of the excessive extracellular ATP after RRD.
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Affiliation(s)
- Takashi Tachibana
- Department of Ophthalmology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
- Ohshima Eye Hospital, Fukuoka, Japan
| | - Shoji Notomi
- Department of Ophthalmology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Jun Funatsu
- Department of Ophthalmology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Kohta Fujiwara
- Department of Ophthalmology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Shunji Nakatake
- Department of Ophthalmology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Yusuke Murakami
- Department of Ophthalmology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Shintaro Nakao
- Department of Ophthalmology, Graduate School of Medicine, Juntendo University, Tokyo, Japan
| | | | - Yasuhiro Ikeda
- Department of Ophthalmology, Faculty of Medicine, Miyazaki University, Miyazaki, Japan
| | - Tatsuro Ishibashi
- Department of Ophthalmology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Koh-Hei Sonoda
- Department of Ophthalmology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Toshio Hisatomi
- Department of Ophthalmology, Fukuoka University Chikushi Hospital, 1-1-1 Zokumyouin, Chikushino, Fukuoka, 818-8502, Japan.
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Wang XL, Gao YX, Yuan QZ, Zhang M. Protective effects of CY-09 and astaxanthin on NaIO 3-induced photoreceptor inflammation via the NLRP3/autophagy pathway. Int J Ophthalmol 2024; 17:1217-1231. [PMID: 39026909 PMCID: PMC11246927 DOI: 10.18240/ijo.2024.07.05] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Accepted: 04/11/2024] [Indexed: 07/20/2024] Open
Abstract
AIM To study the effect of the NLRP3/autophagy pathway on the photoreceptor inflammatory response and the protective mechanism of CY-09 and astaxanthin (AST). METHODS ICR mice were intraperitoneally injected NaIO3, CY-09, AST successively and divided into 5 groups, including the control, NaIO3, NaIO3+CY-09, NaIO3+AST, and NaIO3+CY-09+AST groups. Spectral domain optical coherence tomography and flash electroretinogram were examined and the retina tissues were harvested for immunohistochemistry, enzyme linked immunosorbent assay (ELISA), and Western blotting. Retinal pigment epithelium cell line (ARPE-19 cells) and mouse photoreceptor cells line (661W cells) were also treated with NaIO3, CY-09, and AST successively. Cell proliferation was assessed by cell counting kit-8 (CCK-8) assay. Apoptosis was analyzed by flow cytometry. Changes in autophagosome morphology were observed by transmission electron microscopy. Quantitative polymerase chain reaction (qPCR) was used to detect NLRP3 and caspase-1. NLRP3, caspase-1, cleaved caspase-1, p62, Beclin-1, and LC3 protein levels were measured by Western blotting. IL-1β and IL-18 were measured by ELISA. RESULTS Compared with the control group, the activity of NaIO3-treated 661W cells decreased within 24 and 48h, apoptosis increased, NLRP3, caspase-1, IL-1β and IL-18 levels increased, and autophagy-related protein levels increased (P<0.05). Compared with NaIO3 group, CY-09 and AST inhibited apoptosis (P<0.05), reduced NLRP3, caspase-1, IL-1β and IL-18 expression (P<0.05), and inhibited autophagy. Compared with the other groups, CY-09 combined with AST significantly decreased NLRP3 expression and inhibited the expression of the autophagy-related proteins p62, Beclin-1, and LC3 in vitro and in vivo (P<0.05). CONCLUSION CY-09 and AST inhibit NaIO3-induced inflammatory damage through the NLRP3/autophagy pathway in vitro and in vivo. CY-09 and AST may protect retina from inflammatory injury.
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Affiliation(s)
- Xiao-Li Wang
- Department of Ophthalmology, West China Hospital, Sichuan University, Chengdu 610041, Sichuan Province, China
| | - Yun-Xia Gao
- Department of Ophthalmology, West China Hospital, Sichuan University, Chengdu 610041, Sichuan Province, China
| | - Qiong-Zhen Yuan
- Department of Ophthalmology, West China Hospital, Sichuan University, Chengdu 610041, Sichuan Province, China
| | - Ming Zhang
- Department of Ophthalmology, West China Hospital, Sichuan University, Chengdu 610041, Sichuan Province, China
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8
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Zhang Y, Watson S, Ramaswamy Y, Singh G. Intravitreal therapeutic nanoparticles for age-related macular degeneration: Design principles, progress and opportunities. Adv Colloid Interface Sci 2024; 329:103200. [PMID: 38788306 DOI: 10.1016/j.cis.2024.103200] [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: 10/24/2023] [Revised: 05/11/2024] [Accepted: 05/19/2024] [Indexed: 05/26/2024]
Abstract
Age-related macular degeneration (AMD) is a leading cause of vision loss in the elderly. The current standard treatment for AMD involves frequent intravitreal administrations of therapeutic agents. While effective, this approach presents challenges, including patient discomfort, inconvenience, and the risk of adverse complications. Nanoparticle-based intravitreal drug delivery platforms offer a promising solution to overcome these limitations. These platforms are engineered to target the retina specifically and control drug release, which enhances drug retention, improves drug concentration and bioavailability at the retinal site, and reduces the frequency of injections. This review aims to uncover the design principles guiding the development of highly effective nanoparticle-based intravitreal drug delivery platforms for AMD treatment. By gaining a deeper understanding of the physiology of ocular barriers and the physicochemical properties of nanoparticles, we establish a basis for designing intravitreal nanoparticles to optimize drug delivery and drug retention in the retina. Furthermore, we review recent nanoparticle-based intravitreal therapeutic strategies to highlight their potential in improving AMD treatment efficiency. Lastly, we address the challenges and opportunities in this field, providing insights into the future of nanoparticle-based drug delivery to improve therapeutic outcomes for AMD patients.
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Affiliation(s)
- Yuhang Zhang
- The School of Biomedical Engineering, Faculty of IT and Engineering, Sydney Nano Institute, The University of Sydney, Camperdown, NSW 2008, Australia
| | - Stephanie Watson
- Faculty of Medicine and Health, Clinical Ophthalmology and Eye Health, Save Sight Institute, The University of Sydney, Camperdown, NSW 2008, Australia
| | - Yogambha Ramaswamy
- The School of Biomedical Engineering, Faculty of IT and Engineering, Sydney Nano Institute, The University of Sydney, Camperdown, NSW 2008, Australia
| | - Gurvinder Singh
- The School of Biomedical Engineering, Faculty of IT and Engineering, Sydney Nano Institute, The University of Sydney, Camperdown, NSW 2008, Australia.
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Kumar B, Mishra M, Talreja D, Cashman S, Kumar-Singh R. Cell-Penetrating Chaperone Nuc1 for Small- and Large-Molecule Delivery Into Retinal Cells and Tissues. Invest Ophthalmol Vis Sci 2024; 65:31. [PMID: 39028980 PMCID: PMC11262537 DOI: 10.1167/iovs.65.8.31] [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: 12/08/2023] [Accepted: 06/20/2024] [Indexed: 07/21/2024] Open
Abstract
Purpose There are currently no means available for the efficient delivery of recombinant proteins into retinal cells in vivo. Although cell-penetrating peptides have been somewhat effective in protein delivery to the retina, they generally require conjugation chemistry with the payload, negatively impacting function of the therapeutic protein. In this study, we developed a novel peptide (Nuc1) that acts as a chaperone for delivery of small and large molecules, including steroids, peptides, antibodies, recombinant proteins, and viruses (adeno-associated viruses [AAVs]) across biological membranes in vivo without the need for conjugation. Methods Nuc1 peptide was designed based on sequences known to bind heparan sulfate proteoglycans and nucleolin found on the surface of retinal cells. Nuc1 was injected into the vitreous of mice with a variety of molecules and retinas examined for uptake and function of these molecules. Results Nuc1 engages the process of macropynocytosis for cell entry. The delivery of functional recombinant X-linked inhibitor of apoptosis protein to photoreceptors via the intravitreal route of injection inhibited retinal apoptosis. Nuc1 was found to enhance the delivery of anti-VEGF antibodies delivered intravitreally or topically in models of age-related macular degeneration (AMD). Nuc1 enhanced delivery of decorin, facilitating significant inhibition of neovascularization and fibrosis in a model of AMD. Finally, Nuc1 was found to enhance penetration of retinal cells and tissues by AAV via both the subretinal and intravitreal routes of injection. Conclusions Nuc1 shows promise as a novel approach for the delivery of recombinant proteins into retinal cells in vivo.
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Affiliation(s)
- Binit Kumar
- Department of Developmental, Molecular and Chemical Biology, Tufts University School of Medicine, Boston, Massachusetts, United States
| | - Manish Mishra
- Department of Developmental, Molecular and Chemical Biology, Tufts University School of Medicine, Boston, Massachusetts, United States
| | - Deepa Talreja
- Department of Developmental, Molecular and Chemical Biology, Tufts University School of Medicine, Boston, Massachusetts, United States
| | - Siobhan Cashman
- Department of Developmental, Molecular and Chemical Biology, Tufts University School of Medicine, Boston, Massachusetts, United States
| | - Rajendra Kumar-Singh
- Department of Developmental, Molecular and Chemical Biology, Tufts University School of Medicine, Boston, Massachusetts, United States
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10
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Zhu C, Cheng Y, Tang Y, Wu H, Liu Z. Changes of aqueous humor cytokine profiles of patients with high intraocular pressure after PPV for retinal detachment. Sci Rep 2024; 14:13044. [PMID: 38844441 PMCID: PMC11156964 DOI: 10.1038/s41598-024-61913-7] [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: 08/23/2023] [Accepted: 05/10/2024] [Indexed: 06/09/2024] Open
Abstract
High intraocular pressure (IOP) is one of the early complications after pars plana vitrectomy (PPV), which may cause glaucoma and poor visual prognosis secondary to surgery. Proliferative vitreoretinopathy (PVR) is one of the complications of retinal detachment (RD) and is the main reason for the poor prognosis, which is related to different kinds of cytokines. It's essential for the basic mechanism to analyze the relative aqueous humor cytokine profiles with IOP after PPV for RD. In this study, we have collected the aqueous humor of 16 patients and qualified 27 cytokines using Luminex and compared biomarkers with the high IOP group and the normal group. As a result, the concentrations of VEGF, IL-6, FGF2, and G-CSF upregulated significantly (P < 0.05), while VEGFR2 downregulated significantly (P < 0.05) in the high IOP group. IL-6 was positively correlated with high IOP (r = 0.561, P = 0.041). Meanwhile, the concentrations of IL-6 (r = 0.543, P = 0.03), IL-5 (r = 0.576, P = 0.019), IL-15 (r = 0.614, P = 0.011), IL-4 (r = 0.517, P = 0.04), ICAM-1 (r = 0.611, P = 0.012), and G-CSF (r = 0.636, P = 0.008) were significantly associated with preoperative PVR classification, and the aqueous humor levels of IL-4 (r = 0.567, P = 0.022), HGF (r = 0.701, P = 0.005), and MCP-1 (r = 0.565, P = 0.035) are significant relative to laser points. Hence, cytokines might potentially be the therapeutic target of high IOP after PPV.
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Affiliation(s)
- Chenchen Zhu
- Eye Center of Second Hospital, Jilin University, 218 Ziqiang Street, Nanguan District, Changchun, 130041, China
| | - Yan Cheng
- Eye Center of Second Hospital, Jilin University, 218 Ziqiang Street, Nanguan District, Changchun, 130041, China
| | - Yi Tang
- Eye Center of Second Hospital, Jilin University, 218 Ziqiang Street, Nanguan District, Changchun, 130041, China
| | - Hong Wu
- Eye Center of Second Hospital, Jilin University, 218 Ziqiang Street, Nanguan District, Changchun, 130041, China.
| | - Zaoxia Liu
- Eye Center of Second Hospital, Jilin University, 218 Ziqiang Street, Nanguan District, Changchun, 130041, China.
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11
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Nguyen Y, Rudd Zhong Manis J, Ronczkowski NM, Bui T, Oxenrider A, Jadeja RN, Thounaojam MC. Unveiling the gut-eye axis: how microbial metabolites influence ocular health and disease. Front Med (Lausanne) 2024; 11:1377186. [PMID: 38799150 PMCID: PMC11122920 DOI: 10.3389/fmed.2024.1377186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Accepted: 04/19/2024] [Indexed: 05/29/2024] Open
Abstract
The intricate interplay between the gut microbiota and ocular health has surpassed conventional medical beliefs, fundamentally reshaping our understanding of organ interconnectivity. This review investigates into the intricate relationship between gut microbiota-derived metabolites and their consequential impact on ocular health and disease pathogenesis. By examining the role of specific metabolites, such as short-chain fatty acids (SCFAs) like butyrate and bile acids (BAs), herein we elucidate their significant contributions to ocular pathologies, thought-provoking the traditional belief of organ sterility, particularly in the field of ophthalmology. Highlighting the dynamic nature of the gut microbiota and its profound influence on ocular health, this review underlines the necessity of comprehending the complex workings of the gut-eye axis, an emerging field of science ready for further exploration and scrutiny. While acknowledging the therapeutic promise in manipulating the gut microbiome and its metabolites, the available literature advocates for a targeted, precise approach. Instead of broad interventions, it emphasizes the potential of exploiting specific microbiome-related metabolites as a focused strategy. This targeted approach compared to a precision tool rather than a broad-spectrum solution, aims to explore the therapeutic applications of microbiome-related metabolites in the context of various retinal diseases. By proposing a nuanced strategy targeted at specific microbial metabolites, this review suggests that addressing specific deficiencies or imbalances through microbiome-related metabolites might yield expedited and pronounced outcomes in systemic health, extending to the eye. This focused strategy holds the potential in bypassing the irregularity associated with manipulating microbes themselves, paving a more efficient pathway toward desired outcomes in optimizing gut health and its implications for retinal diseases.
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Affiliation(s)
- Yvonne Nguyen
- Mercer University School of Medicine, Macon, GA, United States
| | | | | | - Tommy Bui
- Departments of Cellular Biology and Anatomy, Augusta University, Augusta, GA, United States
| | - Allston Oxenrider
- Departments of Cellular Biology and Anatomy, Augusta University, Augusta, GA, United States
| | - Ravirajsinh N. Jadeja
- Biochemistry and Molecular Biology, Medical College of Georgia at Augusta University, Augusta, GA, United States
| | - Menaka C. Thounaojam
- Departments of Cellular Biology and Anatomy, Augusta University, Augusta, GA, United States
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12
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Esteban-Medina M, Loucera C, Rian K, Velasco S, Olivares-González L, Rodrigo R, Dopazo J, Peña-Chilet M. The mechanistic functional landscape of retinitis pigmentosa: a machine learning-driven approach to therapeutic target discovery. J Transl Med 2024; 22:139. [PMID: 38321543 PMCID: PMC10848380 DOI: 10.1186/s12967-024-04911-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Accepted: 01/20/2024] [Indexed: 02/08/2024] Open
Abstract
BACKGROUND Retinitis pigmentosa is the prevailing genetic cause of blindness in developed nations with no effective treatments. In the pursuit of unraveling the intricate dynamics underlying this complex disease, mechanistic models emerge as a tool of proven efficiency rooted in systems biology, to elucidate the interplay between RP genes and their mechanisms. The integration of mechanistic models and drug-target interactions under the umbrella of machine learning methodologies provides a multifaceted approach that can boost the discovery of novel therapeutic targets, facilitating further drug repurposing in RP. METHODS By mapping Retinitis Pigmentosa-related genes (obtained from Orphanet, OMIM and HPO databases) onto KEGG signaling pathways, a collection of signaling functional circuits encompassing Retinitis Pigmentosa molecular mechanisms was defined. Next, a mechanistic model of the so-defined disease map, where the effects of interventions can be simulated, was built. Then, an explainable multi-output random forest regressor was trained using normal tissue transcriptomic data to learn causal connections between targets of approved drugs from DrugBank and the functional circuits of the mechanistic disease map. Selected target genes involvement were validated on rd10 mice, a murine model of Retinitis Pigmentosa. RESULTS A mechanistic functional map of Retinitis Pigmentosa was constructed resulting in 226 functional circuits belonging to 40 KEGG signaling pathways. The method predicted 109 targets of approved drugs in use with a potential effect over circuits corresponding to nine hallmarks identified. Five of those targets were selected and experimentally validated in rd10 mice: Gabre, Gabra1 (GABARα1 protein), Slc12a5 (KCC2 protein), Grin1 (NR1 protein) and Glr2a. As a result, we provide a resource to evaluate the potential impact of drug target genes in Retinitis Pigmentosa. CONCLUSIONS The possibility of building actionable disease models in combination with machine learning algorithms to learn causal drug-disease interactions opens new avenues for boosting drug discovery. Such mechanistically-based hypotheses can guide and accelerate the experimental validations prioritizing drug target candidates. In this work, a mechanistic model describing the functional disease map of Retinitis Pigmentosa was developed, identifying five promising therapeutic candidates targeted by approved drug. Further experimental validation will demonstrate the efficiency of this approach for a systematic application to other rare diseases.
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Affiliation(s)
- Marina Esteban-Medina
- Andalusian Platform for Computational Medicine, Andalusian Public Foundation Progress and Health-FPS, Seville, Spain
- Systems and Computational Medicine Group, Institute of Biomedicine of Seville, IBiS, University Hospital Virgen del Rocío/CSIC/University of Seville, 41013, Seville, Spain
| | - Carlos Loucera
- Andalusian Platform for Computational Medicine, Andalusian Public Foundation Progress and Health-FPS, Seville, Spain
- Systems and Computational Medicine Group, Institute of Biomedicine of Seville, IBiS, University Hospital Virgen del Rocío/CSIC/University of Seville, 41013, Seville, Spain
| | - Kinza Rian
- Andalusian Platform for Computational Medicine, Andalusian Public Foundation Progress and Health-FPS, Seville, Spain
- Systems and Computational Medicine Group, Institute of Biomedicine of Seville, IBiS, University Hospital Virgen del Rocío/CSIC/University of Seville, 41013, Seville, Spain
| | - Sheyla Velasco
- Group of Pathophysiology and Therapies for Vision Disorders, Príncipe Felipe Research Center (CIPF), 46012, Valencia, Spain
| | - Lorena Olivares-González
- Group of Pathophysiology and Therapies for Vision Disorders, Príncipe Felipe Research Center (CIPF), 46012, Valencia, Spain
| | - Regina Rodrigo
- Group of Pathophysiology and Therapies for Vision Disorders, Príncipe Felipe Research Center (CIPF), 46012, Valencia, Spain
- Biomedical Research Networking Center in Rare Diseases (CIBERER), Health Institute Carlos III, 28029, Madrid, Spain
- Department of Physiology, University of Valencia (UV), 46100, Burjassot, Spain
- Department of Anatomy and Physiology, Catholic University of Valencia San Vicente Mártir, 46001, Valencia, Spain
- Joint Research Unit on Endocrinology, Nutrition and Clinical Dietetics UV-IIS La Fe, 46026, Valencia, Spain
| | - Joaquin Dopazo
- Andalusian Platform for Computational Medicine, Andalusian Public Foundation Progress and Health-FPS, Seville, Spain.
- Systems and Computational Medicine Group, Institute of Biomedicine of Seville, IBiS, University Hospital Virgen del Rocío/CSIC/University of Seville, 41013, Seville, Spain.
- Biomedical Research Networking Center in Rare Diseases (CIBERER), Health Institute Carlos III, 28029, Madrid, Spain.
| | - Maria Peña-Chilet
- Andalusian Platform for Computational Medicine, Andalusian Public Foundation Progress and Health-FPS, Seville, Spain.
- Systems and Computational Medicine Group, Institute of Biomedicine of Seville, IBiS, University Hospital Virgen del Rocío/CSIC/University of Seville, 41013, Seville, Spain.
- Biomedical Research Networking Center in Rare Diseases (CIBERER), Health Institute Carlos III, 28029, Madrid, Spain.
- BigData, AI, Biostatistics & Bioinformatics Platform, Health Research Institute La Fe (IISLaFe), 46026, Valencia, Spain.
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Maidana DE, Gonzalez-Buendia L, Pastor-Puente S, Naqvi A, Paschalis E, Kazlauskas A, Miller JW, Vavvas DG. Peripheral monocytes and neutrophils promote photoreceptor cell death in an experimental retinal detachment model. Cell Death Dis 2023; 14:834. [PMID: 38102109 PMCID: PMC10724298 DOI: 10.1038/s41419-023-06350-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 10/31/2023] [Accepted: 11/29/2023] [Indexed: 12/17/2023]
Abstract
Photoreceptor cell death and immune cell infiltration are two major events that contribute to retinal degeneration. However, the relationship between these two events has not been well delineated, primarily because of an inadequate understanding of the immunological processes involved in photoreceptor degeneration, especially that of peripheral leukocytes that infiltrate the subretinal space and retinal tissues. In this work, we characterized the role of leukocyte infiltration within the detached retina. We observed that CD45+ CD11b+ Ly6G+ neutrophils and CD45+ CD11b+ Ly6G- Ly6C+ monocytes are the predominant peripheral immune cell populations that infiltrate the retinal and subretinal space after detachment. Selective depletion of monocytes or neutrophils using cell-specific targeting is neuroprotective for photoreceptors. These results indicate that peripheral innate immune cells contribute to photoreceptor degeneration, and targeting these immune cell populations could be therapeutic during retinal detachment.
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Affiliation(s)
- Daniel E Maidana
- Retina Service, Angiogenesis Lab, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, MA, USA
- Department of Ophthalmology and Visual Sciences, Illinois Eye and Ear Infirmary, University of Illinois at Chicago, Chicago, IL, USA
- Department of Physiology and Biophysics, University of Illinois at Chicago, Chicago, IL, USA
| | - Lucia Gonzalez-Buendia
- Retina Service, Angiogenesis Lab, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, MA, USA
| | - Sara Pastor-Puente
- Department of Ophthalmology and Visual Sciences, Illinois Eye and Ear Infirmary, University of Illinois at Chicago, Chicago, IL, USA
| | - Afsar Naqvi
- Mucosal Immunology Lab, College of Dentistry, University of Illinois at Chicago, Chicago, IL, USA
| | - Eleftherios Paschalis
- Retina Service, Angiogenesis Lab, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, MA, USA
| | - Andrius Kazlauskas
- Department of Ophthalmology and Visual Sciences, Illinois Eye and Ear Infirmary, University of Illinois at Chicago, Chicago, IL, USA
- Department of Physiology and Biophysics, University of Illinois at Chicago, Chicago, IL, USA
| | - Joan W Miller
- Retina Service, Angiogenesis Lab, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, MA, USA
| | - Demetrios G Vavvas
- Retina Service, Angiogenesis Lab, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, MA, USA.
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14
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Iga Y, Hasegawa T, Ikeda HO, Hirota Y, Miyata M, Numa S, Otsuka Y, Tsujikawa A. Progression of retinitis pigmentosa on static perimetry, optical coherence tomography, and fundus autofluorescence. Sci Rep 2023; 13:22040. [PMID: 38086860 PMCID: PMC10716373 DOI: 10.1038/s41598-023-49338-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 12/07/2023] [Indexed: 12/18/2023] Open
Abstract
In retinitis pigmentosa (RP), photoreceptor degeneration leads to progressive visual field loss and visual impairment. Several therapeutic trials are ongoing aiming to establish effective treatments. Although functional evaluations are commonly used in clinical trials, residual ellipsoid zone (EZ) measurement on optical coherence tomography has been shown to be more sensitive to detect disease progression. Establishment of sensitive outcome measurement is essential to develop new therapeutic strategies. In the current study, we evaluated the progression rates of the disease in 76 eyes of 76 patients with RP, using the residual EZ length, ring-shaped macular hyperautofluorescent (AF), and visual field. Decrease rates measured by the residual EZ area and by the hyper-AF ring area were strongly positively correlated (P < 0.0001, r = 0.71). The reduction rates of the residual EZ length and hyper-AF ring radius were constant regardless of their baseline measurements. Faster annual reduction rates of the hyper-AF ring area or radius were significantly correlated with faster visual field progression (P = 0.03, r = 0.25 and P = 0.004, r = 0.33, respectively). These findings support the usage of morphological measurements such as EZ or hyper-AF ring measurements as outcome measurement for future clinical trials for RP.
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Affiliation(s)
- Yuhei Iga
- Department of Ophthalmology and Visual Sciences, Kyoto University Graduate School of Medicine, 54 Shougoin Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Tomoko Hasegawa
- Department of Ophthalmology and Visual Sciences, Kyoto University Graduate School of Medicine, 54 Shougoin Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan.
- Japan Society for the Promotion of Science, Tokyo, Japan.
| | - Hanako Ohashi Ikeda
- Department of Ophthalmology and Visual Sciences, Kyoto University Graduate School of Medicine, 54 Shougoin Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan.
| | - Yoshimichi Hirota
- Department of Ophthalmology and Visual Sciences, Kyoto University Graduate School of Medicine, 54 Shougoin Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Manabu Miyata
- Department of Ophthalmology and Visual Sciences, Kyoto University Graduate School of Medicine, 54 Shougoin Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Shogo Numa
- Department of Ophthalmology and Visual Sciences, Kyoto University Graduate School of Medicine, 54 Shougoin Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Yuki Otsuka
- Department of Ophthalmology and Visual Sciences, Kyoto University Graduate School of Medicine, 54 Shougoin Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Akitaka Tsujikawa
- Department of Ophthalmology and Visual Sciences, Kyoto University Graduate School of Medicine, 54 Shougoin Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan
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15
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Dentel A, Brazhnikova E, Norberg N, Jaillard C, Grieve K, Paques M, Sahel JA, Bertin S, Forster V, Picaud S. Adaptive Optics Flood Illumination Ophthalmoscopy in Nonhuman Primates: Findings in Normal and Short-term Induced Detached Retinae. OPHTHALMOLOGY SCIENCE 2023; 3:100316. [PMID: 37274010 PMCID: PMC10238594 DOI: 10.1016/j.xops.2023.100316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 03/18/2023] [Accepted: 04/13/2023] [Indexed: 06/06/2023]
Abstract
Objective To describe adaptive optics flood illumination ophthalmoscopy (AO-FIO) of the photoreceptor layer in normal nonhuman primates (NHPs) and in the case of a short-term induced retinal detachment (RD). Design Longitudinal fundamental research study. Subjects Four NHPs were used to image normal retinae with AO-FIO (in comparison with 4 healthy humans); 2 NHPs were used to assess the effects of RD. Intervention The photoreceptor layer (cone mosaic metrics, including cone density, cone spacing, and cone regularity) was followed with AO-FIO imaging (rtx1, Imagine Eyes) during a surgically induced RD in 2 NHPs using a vehicle solution containing dimethyl sulfoxide, classically used as a chemical solvent. We also performed functional testing of the retina (full-field and multifocal electroretinogram [ERG]). Main Outcome Measures Correlation of cone mosaic metrics (cone density, spacing, and regularity) between normal retinae of NHPs and humans, and cone metrics, power spectrum, and ERG wave amplitudes after RD. Results Imaging features were very similar in terms of cone reflectivity, cell density, regularity, and spacing values, showing strong positive correlations between NHPs and humans. After RD, AO-FIO revealed several alterations of the cone mosaic slowly recovering during the 3 months after the reattachment, which were not detected functionally by ERG. Conclusions These results demonstrate by in vivo AO-FIO imaging the transient structural changes of photoreceptors after an RD in the primate retina. They also provide an interesting illustration of the AO-FIO potential for investigating photoreceptor toxicity during preclinical studies in NHPs with a high translatability to human studies. Financial Disclosures Proprietary or commercial disclosure may be found after the references.
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Affiliation(s)
- Alexandre Dentel
- Institut de la Vision, INSERM, CNRS, Sorbonne Université, Paris, France
| | - Elena Brazhnikova
- Institut de la Vision, INSERM, CNRS, Sorbonne Université, Paris, France
| | | | - Céline Jaillard
- Institut de la Vision, INSERM, CNRS, Sorbonne Université, Paris, France
| | - Kate Grieve
- CHNO des Quinze-Vingts, INSERM-DGOS CIC 1423, Paris, France
| | - Michel Paques
- Institut de la Vision, INSERM, CNRS, Sorbonne Université, Paris, France
- CHNO des Quinze-Vingts, INSERM-DGOS CIC 1423, Paris, France
| | - José A. Sahel
- Institut de la Vision, INSERM, CNRS, Sorbonne Université, Paris, France
- CHNO des Quinze-Vingts, INSERM-DGOS CIC 1423, Paris, France
- Department of Ophthalmology, University of Pittsburgh School of Medicine and Medical Center, Pittsburgh, Pennsylvania
| | | | - Valérie Forster
- Institut de la Vision, INSERM, CNRS, Sorbonne Université, Paris, France
| | - Serge Picaud
- Institut de la Vision, INSERM, CNRS, Sorbonne Université, Paris, France
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16
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Liang J, Yao F, Fang D, Chen L, Zou Z, Feng L, Zhuang Y, Xie T, Wei P, Li P, Zhang S. Hyperoside alleviates photoreceptor degeneration by preventing cell senescence through AMPK-ULK1 signaling. FASEB J 2023; 37:e23250. [PMID: 37819682 DOI: 10.1096/fj.202301273rr] [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: 06/24/2023] [Revised: 09/13/2023] [Accepted: 09/27/2023] [Indexed: 10/13/2023]
Abstract
Vision loss and blindness are frequently caused by photoreceptor degeneration, for example in age-related macular degeneration and retinitis pigmentosa. However, there is no effective medicine to treat these photoreceptor degeneration-related diseases. Cell senescence is a common phenotype in many diseases; however, few studies have reported whether it occurs in photoreceptor degeneration diseases. Herein, we identified that cell senescence is associated with photoreceptor degeneration induced by N-methyl-N-nitrosourea (MNU, a commonly used photoreceptor degeneration model), presented as increased senescence-associated β-galactosidase activity, DNA damage, oxidative stress and inflammation-related cytokine Interleukin 6 (IL6), and upregulation of cyclin p21 or p16. These results suggested that visual function might be protected using anti-aging treatment. Furthermore, Hyperoside is reported to help prevent aging in various organs. In this study, we showed that Hyperoside, delivered intravitreally, alleviated photoreceptor cell senescence and ameliorated the functional and morphological degeneration of the retina in vivo and in vitro. Importantly, Hyperoside attenuated the MNU-induced injury and aging of photoreceptors via AMPK-ULK1 signaling inhibition. Taken together, our results demonstrated that Hyperoside can prevent MNU-induced photoreceptor degeneration by inhibiting cell senescence via the AMPK-ULK1 pathway.
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Affiliation(s)
- Jia Liang
- Shenzhen Eye Hospital, Shenzhen Eye Institute, Jinan University, Shenzhen, Guangdong, China
| | - Fei Yao
- Shenzhen Eye Hospital, Shenzhen Eye Institute, Jinan University, Shenzhen, Guangdong, China
| | - Dong Fang
- Shenzhen Eye Hospital, Shenzhen Eye Institute, Jinan University, Shenzhen, Guangdong, China
| | - Lu Chen
- Shenzhen Eye Hospital, Shenzhen Eye Institute, Jinan University, Shenzhen, Guangdong, China
| | - Zhenhua Zou
- Shenzhen Eye Hospital, Shenzhen Eye Institute, Jinan University, Shenzhen, Guangdong, China
| | - Lujia Feng
- Shenzhen Eye Hospital, Shenzhen Eye Institute, Jinan University, Shenzhen, Guangdong, China
| | - Yijing Zhuang
- Shenzhen Eye Hospital, Shenzhen Eye Institute, Jinan University, Shenzhen, Guangdong, China
| | - Ting Xie
- Shenzhen Eye Hospital, Shenzhen Eye Institute, Jinan University, Shenzhen, Guangdong, China
| | - Pengxue Wei
- Shenzhen Eye Hospital, Shenzhen Eye Institute, Jinan University, Shenzhen, Guangdong, China
| | - Pengfeng Li
- Shenzhen Eye Hospital, Shenzhen Eye Institute, Jinan University, Shenzhen, Guangdong, China
| | - Shaochong Zhang
- Shenzhen Eye Hospital, Shenzhen Eye Institute, Jinan University, Shenzhen, Guangdong, China
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17
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Jiménez-Loygorri JI, Benítez-Fernández R, Viedma-Poyatos Á, Zapata-Muñoz J, Villarejo-Zori B, Gómez-Sintes R, Boya P. Mitophagy in the retina: Viewing mitochondrial homeostasis through a new lens. Prog Retin Eye Res 2023; 96:101205. [PMID: 37454969 DOI: 10.1016/j.preteyeres.2023.101205] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 07/11/2023] [Accepted: 07/13/2023] [Indexed: 07/18/2023]
Abstract
Mitochondrial function is key to support metabolism and homeostasis in the retina, an organ that has one of the highest metabolic rates body-wide and is constantly exposed to photooxidative damage and external stressors. Mitophagy is the selective autophagic degradation of mitochondria within lysosomes, and can be triggered by distinct stimuli such as mitochondrial damage or hypoxia. Here, we review the importance of mitophagy in retinal physiology and pathology. In the developing retina, mitophagy is essential for metabolic reprogramming and differentiation of retina ganglion cells (RGCs). In basal conditions, mitophagy acts as a quality control mechanism, maintaining a healthy mitochondrial pool to meet cellular demands. We summarize the different autophagy- and mitophagy-deficient mouse models described in the literature, and discuss the potential role of mitophagy dysregulation in retinal diseases such as glaucoma, diabetic retinopathy, retinitis pigmentosa, and age-related macular degeneration. Finally, we provide an overview of methods used to monitor mitophagy in vitro, ex vivo, and in vivo. This review highlights the important role of mitophagy in sustaining visual function, and its potential as a putative therapeutic target for retinal and other diseases.
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Affiliation(s)
- Juan Ignacio Jiménez-Loygorri
- Autophagy Lab, Department of Cellular and Molecular Biology, Centro de Investigaciones Biológicas Margarita Salas, CSIC, Ramiro de Maeztu 9, 28040, Madrid, Spain.
| | - Rocío Benítez-Fernández
- Autophagy Lab, Department of Cellular and Molecular Biology, Centro de Investigaciones Biológicas Margarita Salas, CSIC, Ramiro de Maeztu 9, 28040, Madrid, Spain; Departament of Neuroscience and Movement Science, Faculty of Science and Medicine, University of Fribourg, 1700, Fribourg, Switzerland
| | - Álvaro Viedma-Poyatos
- Autophagy Lab, Department of Cellular and Molecular Biology, Centro de Investigaciones Biológicas Margarita Salas, CSIC, Ramiro de Maeztu 9, 28040, Madrid, Spain
| | - Juan Zapata-Muñoz
- Autophagy Lab, Department of Cellular and Molecular Biology, Centro de Investigaciones Biológicas Margarita Salas, CSIC, Ramiro de Maeztu 9, 28040, Madrid, Spain
| | - Beatriz Villarejo-Zori
- Autophagy Lab, Department of Cellular and Molecular Biology, Centro de Investigaciones Biológicas Margarita Salas, CSIC, Ramiro de Maeztu 9, 28040, Madrid, Spain
| | - Raquel Gómez-Sintes
- Autophagy Lab, Department of Cellular and Molecular Biology, Centro de Investigaciones Biológicas Margarita Salas, CSIC, Ramiro de Maeztu 9, 28040, Madrid, Spain
| | - Patricia Boya
- Autophagy Lab, Department of Cellular and Molecular Biology, Centro de Investigaciones Biológicas Margarita Salas, CSIC, Ramiro de Maeztu 9, 28040, Madrid, Spain; Departament of Neuroscience and Movement Science, Faculty of Science and Medicine, University of Fribourg, 1700, Fribourg, Switzerland.
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18
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Sajovic J, Meglič A, Corradi Z, Khan M, Maver A, Vidmar MJ, Hawlina M, Cremers FPM, Fakin A. ABCA4 Variant c.5714+5G>A in Trans With Null Alleles Results in Primary RPE Damage. Invest Ophthalmol Vis Sci 2023; 64:33. [PMID: 37728905 PMCID: PMC10516765 DOI: 10.1167/iovs.64.12.33] [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: 02/28/2023] [Accepted: 08/30/2023] [Indexed: 09/22/2023] Open
Abstract
Purpose To determine the disease pathogenesis associated with the frequent ABCA4 variant c.5714+5G>A (p.[=,Glu1863Leufs*33]). Methods Patient-derived photoreceptor precursor cells were generated to analyze the effect of c.5714+5G>A on splicing and perform a quantitative analysis of c.5714+5G>A products. Patients with c.5714+5G>A in trans with a null allele (i.e., c.5714+5G>A patients; n = 7) were compared with patients with two null alleles (i.e., double null patients; n = 11); with a special attention to the degree of RPE atrophy (area of definitely decreased autofluorescence and the degree of photoreceptor impairment (outer nuclear layer thickness and pattern electroretinography amplitude). Results RT-PCR of mRNA from patient-derived photoreceptor precursor cells showed exon 40 and exon 39/40 deletion products, as well as the normal transcript. Quantification of products showed 52.4% normal and 47.6% mutant ABCA4 mRNA. Clinically, c.5714+5G>A patients displayed significantly better structural and functional preservation of photoreceptors (thicker outer nuclear layer, presence of tubulations, higher pattern electroretinography amplitude) than double null patients with similar degrees of RPE loss, whereas double null patients exhibited signs of extensive photoreceptor ,damage even in the areas with preserved RPE. Conclusions The prototypical STGD1 sequence of events of primary RPE and secondary photoreceptor damage is congruous with c.5714+5G>A, but not the double null genotype, which implies different and genotype-dependent disease mechanisms. We hypothesize that the relative photoreceptor sparing in c.5714+5G>A patients results from the remaining function of the ABCA4 transporter originating from the normally spliced product, possibly by decreasing the direct bisretinoid toxicity on photoreceptor membranes.
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Affiliation(s)
- Jana Sajovic
- Eye Hospital, University Medical Centre Ljubljana, Ljubljana, Slovenia
- Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Andrej Meglič
- Eye Hospital, University Medical Centre Ljubljana, Ljubljana, Slovenia
| | - Zelia Corradi
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, the Netherlands
- Donders Institute for Brain, Cognition and Behaviour, Radboud University, Nijmegen, the Netherlands
| | - Mubeen Khan
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, the Netherlands
- Donders Institute for Brain, Cognition and Behaviour, Radboud University, Nijmegen, the Netherlands
- Max Planck Institute for Psycholinguistics, Nijmegen, the Netherlands
| | - Aleš Maver
- Clinical Institute of Genomic Medicine, University Medical Centre Ljubljana, Ljubljana, Slovenia
| | - Martina Jarc Vidmar
- Eye Hospital, University Medical Centre Ljubljana, Ljubljana, Slovenia
- Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Marko Hawlina
- Eye Hospital, University Medical Centre Ljubljana, Ljubljana, Slovenia
- Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Frans P. M. Cremers
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, the Netherlands
- Donders Institute for Brain, Cognition and Behaviour, Radboud University, Nijmegen, the Netherlands
| | - Ana Fakin
- Eye Hospital, University Medical Centre Ljubljana, Ljubljana, Slovenia
- Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
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19
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Wang NK, Liu PK, Kong Y, Tseng YJ, Jenny LA, Nolan ND, Chen N, Wang HH, Hsu CW, Huang WC, Sparrow JR, Lin CS, Tsang SH. Spatiotemporal control of genome engineering in cone photoreceptors. Cell Biosci 2023; 13:119. [PMID: 37381060 PMCID: PMC10304375 DOI: 10.1186/s13578-023-01033-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 04/15/2023] [Indexed: 06/30/2023] Open
Abstract
BACKGROUND Cones are essential for color recognition, high resolution, and central vision; therefore cone death causes blindness. Understanding the pathophysiology of each cell type in the retina is key to developing therapies for retinal diseases. However, studying the biology of cone cells in the rod-dominant mammalian retina is particularly challenging. In this study, we used a bacterial artificial chromosome (BAC) recombineering method to knock in the "CreERT2" sequence into the Gnat2 and Arr3 genes, respectively and generated three novel inducible CreERT2 mice with different cone cell specificities. RESULTS These models (Gnat2CreERT2, Arr3T2ACreERT2, and Arr3P2ACreERT2) express temporally controllable Cre recombinase that achieves conditional alleles in cone photoreceptors. Cre-LoxP recombination can be induced as early as postnatal day (PD) two upon tamoxifen injection at varying efficiencies, ranging from 10 to 15% in Gnat2CreERT2, 40% in Arr3T2ACreERT2, and 100% in Arr3P2ACreERT2. Notably, knocking in the P2A-CreERT2 cassette does not affect cone cell morphology and functionality. Most cone-phototransduction enzymes, including Opsins, CNGA3, etc. are not altered except for a reduction in the Arr3 transcript. CONCLUSIONS The Arr3P2ACreERT2 mouse, an inducible cone-specific Cre driver, is a valuable line in studying cone cell biology, function, as well as its relationship with rod and other retinal cells. Moreover, the Cre activity can be induced by delivering tamoxifen intragastrically as early as PD2, which will be useful for studying retinal development or in rapid degenerative mouse models.
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Affiliation(s)
- Nan-Kai Wang
- Edward S. Harkness Eye Institute, Department of Ophthalmology, Columbia University Irving Medical Center, New York, NY, 10032, USA.
- Vagelos College of Physicians and Surgeons, Columbia University, New York, USA.
| | - Pei-Kang Liu
- Edward S. Harkness Eye Institute, Department of Ophthalmology, Columbia University Irving Medical Center, New York, NY, 10032, USA
- Department of Ophthalmology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
- School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
- Institute of Biomedical Sciences, National Sun Yat-sen University, Kaohsiung, Taiwan
| | - Yang Kong
- Edward S. Harkness Eye Institute, Department of Ophthalmology, Columbia University Irving Medical Center, New York, NY, 10032, USA
| | - Yun-Ju Tseng
- Edward S. Harkness Eye Institute, Department of Ophthalmology, Columbia University Irving Medical Center, New York, NY, 10032, USA
| | - Laura A Jenny
- Edward S. Harkness Eye Institute, Department of Ophthalmology, Columbia University Irving Medical Center, New York, NY, 10032, USA
| | - Nicholas D Nolan
- Edward S. Harkness Eye Institute, Department of Ophthalmology, Columbia University Irving Medical Center, New York, NY, 10032, USA
- Department of Biomedical Engineering, The Fu Foundation School of Engineering and Applied Science, Columbia University, New York, NY, 10027, USA
| | - Nelson Chen
- Edward S. Harkness Eye Institute, Department of Ophthalmology, Columbia University Irving Medical Center, New York, NY, 10032, USA
- Faculty of Health Sciences, Queen's University, Kingston, ON, Canada
| | - Hung-Hsi Wang
- Edward S. Harkness Eye Institute, Department of Ophthalmology, Columbia University Irving Medical Center, New York, NY, 10032, USA
- College of Arts and Sciences, University of Miami, Coral Gables, FL, USA
| | - Chun Wei Hsu
- Edward S. Harkness Eye Institute, Department of Ophthalmology, Columbia University Irving Medical Center, New York, NY, 10032, USA
| | - Wan-Chun Huang
- Edward S. Harkness Eye Institute, Department of Ophthalmology, Columbia University Irving Medical Center, New York, NY, 10032, USA
| | - Janet R Sparrow
- Departments of Ophthalmology, Pathology and Cell Biology, Columbia University, New York, USA
| | - Chyuan-Sheng Lin
- Department of Pathology & Cell Biology, Columbia University Irving Medical Center, New York, NY, 10032, USA
- Herbert Irving Comprehensive Cancer Center, Columbia University Irving Medical Center, New York, NY, 10032, USA
| | - Stephen H Tsang
- Edward S. Harkness Eye Institute, Department of Ophthalmology, Columbia University Irving Medical Center, New York, NY, 10032, USA.
- Jonas Children's Vision Care, and Bernard and Shirlee Brown Glaucoma Laboratory, Columbia Stem Cell Initiative, Departments of Ophthalmology, Pathology and Cell Biology, Institute of Human Nutrition, Vagelos College of Physicians and Surgeons, Columbia University, New York, USA.
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20
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Maidana DE, Gonzalez-Buendia L, Miller JW, Vavvas DG. RIPK necrotic cell death pathway in both donor photoreceptor and host immune cells synergize to affect photoreceptor graft survival. FASEB J 2023; 37:e22847. [PMID: 36862516 PMCID: PMC10590064 DOI: 10.1096/fj.202201137r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Revised: 11/29/2022] [Accepted: 02/15/2023] [Indexed: 03/03/2023]
Abstract
Photoreceptor transplant has been put forward as a repair strategy to tackle degenerated retinas. Nonetheless, cell death and immune rejection seriously limit the success of this strategy, with only a small fraction of transplanted cells surviving. Improving the survival of transplanted cells is of critical importance. Recent evidence has identified receptor-interacting protein kinase 3 (RIPK3) as a molecular trigger controlling necroptotic cell death and inflammation. However, its role in photoreceptor transplantation and regenerative medicine has not been studied. We hypothesized that modulation of RIPK3 to address both cell death and immunity could have advantageous effects on photoreceptor survival. In a model of inherited retinal degeneration, deletion of RIPK3 in donor photoreceptor precursors significantly increases the survival of transplanted cells. Simultaneous RIPK3 deletion in donor photoreceptors and recipients maximizes graft survival. Lastly, to discern the role of RIPK3 in the host immune response, bone marrow transplant experiments demonstrated that peripheral immune cell RIPK3 deficiency is protective for both donor and host photoreceptor survival. Interestingly, this finding is independent of photoreceptor transplantation, as the peripheral protective effect is also observed in an additional retinal detachment photoreceptor degeneration model. Altogether, these results indicate that immunomodulatory and neuroprotective strategies targeting the RIPK3 pathway can aid regenerative therapies of photoreceptor transplantation.
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Affiliation(s)
- Daniel E. Maidana
- Retina Service, Angiogenesis Laboratory, Department of Ophthalmology, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, MA 02114, USA
- Department of Ophthalmology and Visual Sciences, University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Lucia Gonzalez-Buendia
- Retina Service, Angiogenesis Laboratory, Department of Ophthalmology, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, MA 02114, USA
| | - Joan W. Miller
- Retina Service, Angiogenesis Laboratory, Department of Ophthalmology, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, MA 02114, USA
| | - Demetrios G. Vavvas
- Retina Service, Angiogenesis Laboratory, Department of Ophthalmology, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, MA 02114, USA
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21
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Zhou W, Zhou Y, He J, Rao Y, Fei P, Li J. TREM2 deficiency in microglia accelerates photoreceptor cell death and immune cell infiltration following retinal detachment. Cell Death Dis 2023; 14:219. [PMID: 36977680 PMCID: PMC10050330 DOI: 10.1038/s41419-023-05735-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 03/03/2023] [Accepted: 03/13/2023] [Indexed: 03/30/2023]
Abstract
Retinal detachment (RD) occurs in several major retinal conditions and often causes irreversible vision loss due to photoreceptor cell death. Retinal residential microglial cells are activated following RD and participate in photoreceptor cell death via direct phagocytosis and the regulation of inflammatory responses. Triggering receptor expressed on myeloid cells 2 (TREM2) is an innate immune receptor exclusively expressed on microglial cells in the retina, and has been reported to affect microglial cell homeostasis, phagocytosis and inflammatory responses in the brain. In this study, increased expression of multiple cytokines and chemokines in the neural retina was observed starting at 3 h following RD. Trem2 knockout (Trem2-/-) mice exhibited significantly more photoreceptor cell death than wild-type controls at 3 days after RD, and the number of TUNEL positive photoreceptor cells progressively decreased from day 3 to day 7 post-RD. A significant thinning of the outer nuclear layer (ONL), with multiple folds was observed in the Trem2-/- mice at 3 days post-RD. Trem2 deficiency reduced microglial cell infiltration and phagocytosis of stressed photoreceptors. There were more neutrophils in Trem2-/- retina following RD than in controls. Using purified microglial cells, we found Trem2 knockout is associated with increased CXCL12 expression. The aggravated photoreceptor cell death was largely reversed by blocking the CXCL12-CXCR4 mediated chemotaxis in Trem2-/- mice after RD. Our findings suggested that retinal microglia are protective in preventing further photoreceptor cell death following RD by phagocytosing presumably stressed photoreceptor cells and by regulating inflammatory responses. TREM2 is largely responsible for such protective effect and CXCL12 plays an important role in regulating neutrophil infiltration after RD. Collectively, our study pinpointed TREM2 as a potential target of microglial cells to ameliorate RD-induced photoreceptor cell death.
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Affiliation(s)
- Wenchuan Zhou
- Department of Ophthalmology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China
| | - Yutong Zhou
- Department of Ophthalmology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China
| | - Jincan He
- Department of Ophthalmology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China
| | - Yuqing Rao
- Department of Ophthalmology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China
| | - Ping Fei
- Department of Ophthalmology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China.
| | - Jing Li
- Department of Ophthalmology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China.
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22
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Guo CJ, Cao XL, Zhang YF, Yue KY, Han J, Yan H, Han H, Zheng MH. Exosome-mediated inhibition of microRNA-449a promotes the amplification of mouse retinal progenitor cells and enhances their transplantation in retinal degeneration mouse models. MOLECULAR THERAPY. NUCLEIC ACIDS 2023; 31:763-778. [PMID: 36937621 PMCID: PMC10020531 DOI: 10.1016/j.omtn.2023.02.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 02/11/2023] [Indexed: 02/18/2023]
Abstract
Inherited and age-related retinal degenerations are the commonest causes of blindness without effective treatments. Retinal progenitor cells (RPCs), which have the multipotency to differentiate into various retinal cell types, are regarded as a promising source of cell transplantation therapy for retinal degenerative diseases. However, the self-limited expansion of RPCs causes difficulty in cell source supply and restrict its clinical treatment. In this work, we found that inhibition of microRNA-449a (miR-449a) in RPCs can promote proliferation and inhibit apoptosis of RPCs, partially through upregulating Notch signaling. Further optimization of transduction miR-449a inhibitor into RPCs by endothelial cell-derived exosomes can promote the survival of RPCs transplanted in vivo and reduce cell apoptosis in retinal degeneration mouse models. In summary, these studies have shown that exosome-miR-449a inhibitor can effectively promote the expansion of RPCs in vitro and enhance transplanted RPCs survival in vivo, which might provide a novel intervention strategy for retinal degenerations in the future.
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Affiliation(s)
- Chen Jun Guo
- Department of Ophthalmology, Tangdu Hospital, Fourth Military Medical University, Xi’an 710038, Shaanxi, China
- Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi’an 710032, Shaanxi, China
| | - Xiu Li Cao
- Department of Medical Genetics and Developmental Biology, Fourth Military Medical University, Xi’an 710032, Shaanxi, China
| | - Yu Fei Zhang
- Department of Medical Genetics and Developmental Biology, Fourth Military Medical University, Xi’an 710032, Shaanxi, China
| | - Kang Yi Yue
- Department of Medical Genetics and Developmental Biology, Fourth Military Medical University, Xi’an 710032, Shaanxi, China
| | - Jing Han
- Department of Ophthalmology, Tangdu Hospital, Fourth Military Medical University, Xi’an 710038, Shaanxi, China
| | - Hong Yan
- Shaanxi Eye Hospital, Xi’an People’s Hospital (Xi’an Fourth Hospital), Affiliated Guangren Hospital, School of Medicine, Xi’an Jiaotong University, Xi’an 710004, Shaanxi, China
| | - Hua Han
- Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi’an 710032, Shaanxi, China
- Corresponding author: Hua Han, Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Chang-Le Xi Street #169, Xi’an 710032, China.
| | - Min Hua Zheng
- Department of Medical Genetics and Developmental Biology, Fourth Military Medical University, Xi’an 710032, Shaanxi, China
- Corresponding author: Min-Hua Zheng, Department of Medical Genetics and Developmental Biology, Fourth Military Medical University, Xi’an 710032, China.
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23
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Iannetti L, Scarinci F, Alisi L, Armentano M, Sampalmieri L, La Cava M, Gharbiya M. Correlation between Morphological Characteristics of Macular Edema and Visual Acuity in Young Patients with Idiopathic Intermediate Uveitis. Medicina (B Aires) 2023; 59:medicina59030529. [PMID: 36984530 PMCID: PMC10054752 DOI: 10.3390/medicina59030529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Revised: 02/12/2023] [Accepted: 03/06/2023] [Indexed: 03/11/2023] Open
Abstract
Background and Objectives: Macular edema (ME) is a common complication of intermediate uveitis (IU). It is often responsible for a decrease in visual acuity (VA). Three distinct patterns of macular edema have been described in intermediate uveitis, namely, cystoid macular edema (CME), diffuse macular edema (DME), and serous retinal detachment (SRD). The current study aims to describe the characteristics of macular edema in young patients with idiopathic intermediate uveitis and to correlate its features with VA using spectral domain optical coherence tomography (SD-OCT). Materials and Methods: A total of 27 eyes from 18 patients with idiopathic IU complicated by ME were included in this retrospective study. All patients underwent SD-OCT; data were gathered at the onset of ME. Best-corrected VA (BCVA) was correlated with the morphological features of ME. Results: BCVA was negatively correlated with Ellipsoid Zone (EZ) disruption (p = 0.00021), cystoid pattern (p = 0.00021), central subfield thickness (CST) (p < 0.001), and serous retinal detachment (0.037). Conclusions: In ME secondary to idiopathic IU, VA negatively correlates with Ellipsoid Zone disruption and increases in CST. Moreover, vision is influenced by the presence of cysts in the inner nuclear and outer nuclear layers and by the neuroepithelium detachment.
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Affiliation(s)
- Ludovico Iannetti
- Ophthalmology Unit, Head and Neck Department, Policlinico Umberto I University Hospital, Sapienza University of Rome, 00161 Rome, Italy
- Correspondence: ; Tel.: +39-3388635417
| | | | - Ludovico Alisi
- Department of Sense Organs, Sapienza University of Rome, 00185 Rome, Italy
| | - Marta Armentano
- Department of Sense Organs, Sapienza University of Rome, 00185 Rome, Italy
| | | | - Maurizio La Cava
- Department of Sense Organs, Sapienza University of Rome, 00185 Rome, Italy
| | - Magda Gharbiya
- Department of Sense Organs, Sapienza University of Rome, 00185 Rome, Italy
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24
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Arndt C, Hubault B, Hayate F, Barbe C, Afriat M, Gillery P, Ramont L, Henry A, Boulagnon-Rombi C. Increased intravitreal glucose in rhegmatogenous retinal detachment. Eye (Lond) 2023; 37:638-643. [PMID: 35273350 PMCID: PMC9998851 DOI: 10.1038/s41433-022-01968-w] [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: 08/19/2021] [Revised: 01/22/2022] [Accepted: 02/02/2022] [Indexed: 11/09/2022] Open
Abstract
PURPOSE Altered glucose metabolism, along with low-grade inflammation, has been proposed to be involved in retinal detachment (RD)-induced cone loss. Here, we assessed intravitreal glucose and cytological profile in patients with macula-off RD. METHODS Glucose concentration was analysed in vitreous samples from 137 non-diabetic patients undergoing vitrectomy for either primary macula-off RD (n = 73) or epiretinal membrane (ERM; n = 64). Cellularity was assessed in vitreous cytospin preparations by a semi-quantitative immunostaining approach. RESULTS Intravitreal glucose concentration was higher in the RD group (2.28 mmol.L-1 n =73 vs 1.6 mmol.L-1 n = 64; p < 0.0001). Overall cellularity and density of macrophages were significantly higher in the vitreous of RD patients (respectively p = 0.003 and p < 0.0001). Among the RD patients, intravitreal glucose concentration correlated with macrophages density (p = 0.002): its levels remained significantly higher in eyes in which macrophages were innumerable compared to lower macrophages densities RD eyes (p = 0.0095). CONCLUSIONS We observed a strong relationship between intravitreal glucose concentration and vitreous macrophage density. Additional indicators for vitreous glycation and low-grade inflammation should be further studied.
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Affiliation(s)
- Carl Arndt
- Department of Ophthalmology, Hôpital Robert Debré, Reims, France.
| | - Béatrice Hubault
- Department of Ophthalmology, Hôpital Robert Debré, Reims, France
| | - Fabien Hayate
- Department of Ophthalmology, Hôpital Robert Debré, Reims, France
- Department of Pathology, Hôpital Robert Debré, Reims, France
| | - Coralie Barbe
- Department of Clinical Research, Hôpital Robert Debré, Reims, France
| | - Mickaël Afriat
- Department of Ophthalmology, Hôpital Robert Debré, Reims, France
| | - Philippe Gillery
- Department of Biochemistry, Hôpital Robert Debré, Reims, France
- Research Unit CNRS UMR n°7369 MEDyC, Université de Reims Champagne-Ardenne, Faculté de Médecine de Reims, Reims, France
| | - Laurent Ramont
- Department of Biochemistry, Hôpital Robert Debré, Reims, France
- Research Unit CNRS UMR n°7369 MEDyC, Université de Reims Champagne-Ardenne, Faculté de Médecine de Reims, Reims, France
| | - Adrien Henry
- Department of Ophthalmology, Hôpital Robert Debré, Reims, France
- Research Unit CNRS UMR n°7369 MEDyC, Université de Reims Champagne-Ardenne, Faculté de Médecine de Reims, Reims, France
| | - Camille Boulagnon-Rombi
- Department of Pathology, Hôpital Robert Debré, Reims, France
- Research Unit CNRS UMR n°7369 MEDyC, Université de Reims Champagne-Ardenne, Faculté de Médecine de Reims, Reims, France
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25
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Cao P, Cheng Y, Li Z, Cheng YJ, Chu X, Geng C, Yin X, Li Y. Intraocular delivery of ZIF-90-RhB-GW2580 nanoparticles prevents the progression of photoreceptor degeneration. J Nanobiotechnology 2023; 21:44. [PMID: 36747224 PMCID: PMC9901128 DOI: 10.1186/s12951-023-01794-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 01/24/2023] [Indexed: 02/08/2023] Open
Abstract
Photoreceptor degeneration is one of the major causes of progressive blindness which lacks of curative treatment. GW2580, a highly selective inhibitor of colony-stimulating factor 1 receptor, has the protective potential on neurons; however, little was known about the application of GW2580 on photoreceptor degeneration. In this study, BV-2 and 661W cells coculture system was constructed to investigate the interaction between microglia and photoreceptors. GW2580 was loaded into zeolitic imidazolate framework-90-rhodamine B (ZIF-90-RhB) to synthesize a novel kind of nanoparticles, namely, ZIF-90-RhB-GW2580, through a one-step self-assembly approach. A photoreceptor degeneration model was generated by intense light exposure in zebrafish and ZIF-90-RhB-GW2580 nanoparticles were delivered by the intraocular injection. The results showed that in vitro GW2580 treatment promoted phenotypic transformation in microglia and led to the blockade of photoreceptor apoptosis. Following the intraocular delivery of ZIF-90-RhB-GW2580 nanoparticles, the microglial proliferation and inflammatory response were significantly inhibited; moreover, the photoreceptors underwent alleviated injury with a recovery of retinal structure and visual function. In conclusion, the intraocular injection of ZIF-90-RhB-GW2580 at the early stage enables the precise delivery and sustained release of the GW2580, thus preventing the progression of photoreceptor degeneration.
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Affiliation(s)
- Peipei Cao
- grid.216938.70000 0000 9878 7032Medical International Collaborative Innovation Center, School of Medicine, Nankai University, Tianjin, 300071 China ,grid.24696.3f0000 0004 0369 153XBeijing Municipal Geriatric Medical Research Center, Xuanwu Hospital, National Neurological Disease Center, Capital Medical University, Beijing, 100053 China
| | - Yue Cheng
- grid.33763.320000 0004 1761 2484Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072 China
| | - Zhi Li
- grid.216938.70000 0000 9878 7032Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin, 300071 China
| | - Ya-Jia Cheng
- grid.216938.70000 0000 9878 7032Medical International Collaborative Innovation Center, School of Medicine, Nankai University, Tianjin, 300071 China
| | - Xiaoqi Chu
- grid.216938.70000 0000 9878 7032Medical International Collaborative Innovation Center, School of Medicine, Nankai University, Tianjin, 300071 China ,grid.24696.3f0000 0004 0369 153XBeijing Municipal Geriatric Medical Research Center, Xuanwu Hospital, National Neurological Disease Center, Capital Medical University, Beijing, 100053 China
| | - Chao Geng
- grid.216938.70000 0000 9878 7032Medical International Collaborative Innovation Center, School of Medicine, Nankai University, Tianjin, 300071 China ,grid.24696.3f0000 0004 0369 153XBeijing Municipal Geriatric Medical Research Center, Xuanwu Hospital, National Neurological Disease Center, Capital Medical University, Beijing, 100053 China
| | - Xuebo Yin
- grid.412542.40000 0004 1772 8196College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, 201620 China
| | - Yuhao Li
- Medical International Collaborative Innovation Center, School of Medicine, Nankai University, Tianjin, 300071, China. .,Beijing Municipal Geriatric Medical Research Center, Xuanwu Hospital, National Neurological Disease Center, Capital Medical University, Beijing, 100053, China.
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26
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Völkner M, Wagner F, Kurth T, Sykes AM, Del Toro Runzer C, Ebner LJA, Kavak C, Alexaki VI, Cimalla P, Mehner M, Koch E, Karl MO. Modeling inducible neuropathologies of the retina with differential phenotypes in organoids. Front Cell Neurosci 2023; 17:1106287. [PMID: 37213216 PMCID: PMC10196395 DOI: 10.3389/fncel.2023.1106287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Accepted: 04/06/2023] [Indexed: 05/23/2023] Open
Abstract
Neurodegenerative diseases remain incompletely understood and therapies are needed. Stem cell-derived organoid models facilitate fundamental and translational medicine research. However, to which extent differential neuronal and glial pathologic processes can be reproduced in current systems is still unclear. Here, we tested 16 different chemical, physical, and cell functional manipulations in mouse retina organoids to further explore this. Some of the treatments induce differential phenotypes, indicating that organoids are competent to reproduce distinct pathologic processes. Notably, mouse retina organoids even reproduce a complex pathology phenotype with combined photoreceptor neurodegeneration and glial pathologies upon combined (not single) application of HBEGF and TNF, two factors previously associated with neurodegenerative diseases. Pharmacological inhibitors for MAPK signaling completely prevent photoreceptor and glial pathologies, while inhibitors for Rho/ROCK, NFkB, and CDK4 differentially affect them. In conclusion, mouse retina organoids facilitate reproduction of distinct and complex pathologies, mechanistic access, insights for further organoid optimization, and modeling of differential phenotypes for future applications in fundamental and translational medicine research.
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Affiliation(s)
- Manuela Völkner
- Technische Universität Dresden, Center for Regenerative Therapies Dresden (CRTD), Dresden, Germany
- German Center for Neurodegenerative Diseases (DZNE), Dresden, Germany
| | - Felix Wagner
- Technische Universität Dresden, Center for Regenerative Therapies Dresden (CRTD), Dresden, Germany
- German Center for Neurodegenerative Diseases (DZNE), Dresden, Germany
| | - Thomas Kurth
- Technische Universität Dresden, Center for Molecular and Cellular Bioengineering (CMCB), Technology Platform Core Facility Electron Microscopy and Histology, Dresden, Germany
| | - Alex M. Sykes
- Max Planck Institute of Molecular Cell Biology and Genetics, Dresden, Germany
| | | | - Lynn J. A. Ebner
- German Center for Neurodegenerative Diseases (DZNE), Dresden, Germany
| | - Cagri Kavak
- German Center for Neurodegenerative Diseases (DZNE), Dresden, Germany
| | - Vasileia Ismini Alexaki
- Technische Universität Dresden, Institute of Clinical Chemistry and Laboratory Medicine, University Clinic Carl Gustav Carus, Dresden, Germany
| | - Peter Cimalla
- Technische Universität Dresden, Carl Gustav Carus Faculty of Medicine, Department of Anesthesiology and Intensive Care Medicine, Clinical Sensoring and Monitoring, Dresden, Germany
| | - Mirko Mehner
- Technische Universität Dresden, Carl Gustav Carus Faculty of Medicine, Department of Anesthesiology and Intensive Care Medicine, Clinical Sensoring and Monitoring, Dresden, Germany
| | - Edmund Koch
- Technische Universität Dresden, Carl Gustav Carus Faculty of Medicine, Department of Anesthesiology and Intensive Care Medicine, Clinical Sensoring and Monitoring, Dresden, Germany
| | - Mike O. Karl
- Technische Universität Dresden, Center for Regenerative Therapies Dresden (CRTD), Dresden, Germany
- German Center for Neurodegenerative Diseases (DZNE), Dresden, Germany
- *Correspondence: Mike O. Karl, ,
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Zhang Q, Hu XM, Zhao WJ, Ban XX, Li Y, Huang YX, Wan H, He Y, Liao LS, Shang L, Jiang B, Qing GP, Xiong K. Targeting Necroptosis: A Novel Therapeutic Option for Retinal Degenerative Diseases. Int J Biol Sci 2023; 19:658-674. [PMID: 36632450 PMCID: PMC9830514 DOI: 10.7150/ijbs.77994] [Citation(s) in RCA: 22] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Accepted: 12/15/2022] [Indexed: 01/04/2023] Open
Abstract
The discovery of the necroptosis, a form of regulated necrosis that is mediated by receptor-interacting protein kinase 1 (RIPK1), RIPK3, and mixed-lineage kinase domain-like pseudokinase (MLKL), represents a major breakthrough that has dramatically altered the conception of necrosis - traditionally thought of as uncontrolled cell death - in various human diseases. Retinal cell death is a leading cause of blindness and has been identified in most retinal diseases, e.g., age-related macular degeneration, glaucoma, retinal detachment, retinitis pigmentosa, etc. Increasing evidence demonstrates that retinal degenerative diseases also share a common mechanism in necroptosis. Exacerbated necroptotic cell death hinders the treatment for retinal degenerative diseases. In this review, we highlight recent advances in identifying retinal necroptosis, summarize the underlying mechanisms of necroptosis in retinal degenerative diseases, and discuss potential anti-necroptosis strategies, such as selective inhibitors and chemical agents, for treating retinal degenerative diseases.
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Affiliation(s)
- Qi Zhang
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha, China.,Key Laboratory of Emergency and Trauma, Ministry of Education, College of Emergency and Trauma, Hainan Medical University, Haikou, China
| | - Xi-min Hu
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Wen-juan Zhao
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Xiao-xia Ban
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Yan Li
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Yan-xia Huang
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Hao Wan
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Ye He
- Changsha Aier Eye Hospital, Changsha, China
| | - Lv-shuang Liao
- School of Physical Education, Hunan Institute of Science and Technology, Yueyang, China
| | - Lei Shang
- Affiliated Eye Hospital of Nanchang University, Jiangxi Research Institute of Ophthalmology and Visual Science, Jiangxi Clinical Research Center for Ophthalmic Disease, Nanchang, China
| | - Bin Jiang
- Department of Ophthalmology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Guo-ping Qing
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing, China.,Beijing Ophthalmology and Visual Sciences Key Laboratory, Beijing, China
| | - Kun Xiong
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha, China.,Key Laboratory of Emergency and Trauma, Ministry of Education, College of Emergency and Trauma, Hainan Medical University, Haikou, China.,Hunan Key Laboratory of Ophthalmology, Changsha, China.,✉ Corresponding author: E-mail:
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28
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İpekli Z, Pehlivanoğlu S, Artunay Ö. Efficacy of pneumatic retinopexy in young adults with rhegmatogenous retinal detachment. Ther Adv Ophthalmol 2023; 15:25158414231208279. [PMID: 37915881 PMCID: PMC10617287 DOI: 10.1177/25158414231208279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 09/29/2023] [Indexed: 11/03/2023] Open
Abstract
Background In young adults with rhegmatogenous retinal detachment, pneumatic retinopexy can be a cost-effective and minimally invasive highly effective method in suitable cases. Objectives To evaluate the role of pneumatic retinopexy in the treatment of young adults with rhegmatogenous retinal detachment (RRD) and the factors that may affect the success of pneumatic retinopexy. Design Retrospective study. Methods The study included 67 eyes of 67 patients aged between 21 and 40 who underwent pneumatic retinopexy (PR) between January 2015 and June 2021 for primary RRD. We retrospectively analyzed the prognostic factors that may affect the success of PR, such as preoperative age, best corrected visual acuity, tear site, lens condition, and axial length. Results PR was successful in 61.2% of the patients, whereas 38.8% required secondary surgery. Between the group that had a single surgery (Group 1) and the group that required secondary surgery (Group 2) the tear location, axial length, and volumes of gases used were statistically different (p = 0.04, p < 0.001, and p = 0.02, respectively). There was a significant difference in visual acuity before and after surgery in the group that was successful with a single surgery (Friedman χ2 = 40.051, p < 0.001). There was no significant difference between the two groups in terms of intraocular pressure (p > 0.05), and glaucoma was not observed in the postoperative period. Conclusion Since it is a minimally invasive and cost-effective method that provides rapid visual rehabilitation, it can be considered as first-line therapy in young adults who are suitable for PR.
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Affiliation(s)
- Zeynep İpekli
- University of Health Sciences, Beyoglu Eye Training and Research Hospital, Bereketzade camii sk, No:2, Beyoglu, Istanbul 34421, Turkey
| | - Seren Pehlivanoğlu
- University of Health Sciences, Beyoglu Eye Training and Research Hospital, Istanbul, Turkey
| | - Özgür Artunay
- University of Health Sciences, Beyoglu Eye Training and Research Hospital, Istanbul, Turkey
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29
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Dos Santos FM, Ciordia S, Mesquita J, de Sousa JPC, Paradela A, Tomaz CT, Passarinha LAP. Vitreous humor proteome: unraveling the molecular mechanisms underlying proliferative and neovascular vitreoretinal diseases. Cell Mol Life Sci 2022; 80:22. [PMID: 36585968 PMCID: PMC11072707 DOI: 10.1007/s00018-022-04670-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 11/09/2022] [Accepted: 12/12/2022] [Indexed: 01/01/2023]
Abstract
Proliferative diabetic retinopathy (PDR), proliferative vitreoretinopathy (PVR), and neovascular age-related macular degeneration (nAMD) are among the leading causes of blindness. Due to the multifactorial nature of these vitreoretinal diseases, omics approaches are essential for a deeper understanding of the pathophysiologic processes underlying the evolution to a proliferative or neovascular etiology, in which patients suffer from an abrupt loss of vision. For many years, it was thought that the function of the vitreous was merely structural, supporting and protecting the surrounding ocular tissues. Proteomics studies proved that vitreous is more complex and biologically active than initially thought, and its changes reflect the physiological and pathological state of the eye. The vitreous is the scenario of a complex interplay between inflammation, fibrosis, oxidative stress, neurodegeneration, and extracellular matrix remodeling. Vitreous proteome not only reflects the pathological events that occur in the retina, but the changes in the vitreous itself play a central role in the onset and progression of vitreoretinal diseases. Therefore, this review offers an overview of the studies on the vitreous proteome that could help to elucidate some of the pathological mechanisms underlying proliferative and/or neovascular vitreoretinal diseases and to find new potential pharmaceutical targets.
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Affiliation(s)
- Fátima Milhano Dos Santos
- Health Sciences Research Centre (CICS-UBI), Universidade da Beira Interior, 6201-001, Covilhã, Portugal.
- Functional Proteomics Laboratory, Centro Nacional de Biotecnología (CNB-CSIC), Unidad de Proteomica, Calle Darwin 3, Campus de Cantoblanco, 28049, Madrid, Spain.
| | - Sergio Ciordia
- Functional Proteomics Laboratory, Centro Nacional de Biotecnología (CNB-CSIC), Unidad de Proteomica, Calle Darwin 3, Campus de Cantoblanco, 28049, Madrid, Spain
| | - Joana Mesquita
- Health Sciences Research Centre (CICS-UBI), Universidade da Beira Interior, 6201-001, Covilhã, Portugal
| | - João Paulo Castro de Sousa
- Health Sciences Research Centre (CICS-UBI), Universidade da Beira Interior, 6201-001, Covilhã, Portugal
- Department of Ophthalmology, Centro Hospitalar de Leiria, 2410-197, Leiria, Portugal
| | - Alberto Paradela
- Functional Proteomics Laboratory, Centro Nacional de Biotecnología (CNB-CSIC), Unidad de Proteomica, Calle Darwin 3, Campus de Cantoblanco, 28049, Madrid, Spain
| | - Cândida Teixeira Tomaz
- Health Sciences Research Centre (CICS-UBI), Universidade da Beira Interior, 6201-001, Covilhã, Portugal
- C4-UBI, Cloud Computing Competence Centre, University of Beira Interior, 6200-501, Covilhã, Portugal
- Chemistry Department, Faculty of Sciences, Universidade da Beira Interior, 6201-001, Covilhã, Portugal
| | - Luís António Paulino Passarinha
- Health Sciences Research Centre (CICS-UBI), Universidade da Beira Interior, 6201-001, Covilhã, Portugal.
- Associate Laboratory i4HB, Faculdade de Ciências e Tecnologia, Institute for Health and Bioeconomy, Universidade NOVA, 2819-516, Caparica, Portugal.
- UCIBIO-Applied Molecular Biosciences Unit, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516, Caparica, Portugal.
- Pharmaco-Toxicology Laboratory, UBIMedical, Universidade da Beira Interior, 6200-000, Covilhã, Portugal.
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30
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Muni RH, Lee WW, Bansal A, Ramachandran A, Hillier RJ. A paradigm shift in retinal detachment repair: The concept of integrity. Prog Retin Eye Res 2022; 91:101079. [DOI: 10.1016/j.preteyeres.2022.101079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 05/15/2022] [Accepted: 05/17/2022] [Indexed: 11/09/2022]
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31
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Völkner M, Wagner F, Steinheuer LM, Carido M, Kurth T, Yazbeck A, Schor J, Wieneke S, Ebner LJA, Del Toro Runzer C, Taborsky D, Zoschke K, Vogt M, Canzler S, Hermann A, Khattak S, Hackermüller J, Karl MO. HBEGF-TNF induce a complex outer retinal pathology with photoreceptor cell extrusion in human organoids. Nat Commun 2022; 13:6183. [PMID: 36261438 PMCID: PMC9581928 DOI: 10.1038/s41467-022-33848-y] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 10/05/2022] [Indexed: 12/24/2022] Open
Abstract
Human organoids could facilitate research of complex and currently incurable neuropathologies, such as age-related macular degeneration (AMD) which causes blindness. Here, we establish a human retinal organoid system reproducing several parameters of the human retina, including some within the macula, to model a complex combination of photoreceptor and glial pathologies. We show that combined application of TNF and HBEGF, factors associated with neuropathologies, is sufficient to induce photoreceptor degeneration, glial pathologies, dyslamination, and scar formation: These develop simultaneously and progressively as one complex phenotype. Histologic, transcriptome, live-imaging, and mechanistic studies reveal a previously unknown pathomechanism: Photoreceptor neurodegeneration via cell extrusion. This could be relevant for aging, AMD, and some inherited diseases. Pharmacological inhibitors of the mechanosensor PIEZO1, MAPK, and actomyosin each avert pathogenesis; a PIEZO1 activator induces photoreceptor extrusion. Our model offers mechanistic insights, hypotheses for neuropathologies, and it could be used to develop therapies to prevent vision loss or to regenerate the retina in patients suffering from AMD and other diseases.
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Affiliation(s)
- Manuela Völkner
- Center for Regenerative Therapies Dresden (CRTD), Technische Universität Dresden, Dresden, Germany
- German Center for Neurodegenerative Diseases (DZNE) Dresden, Dresden, Germany
| | - Felix Wagner
- Center for Regenerative Therapies Dresden (CRTD), Technische Universität Dresden, Dresden, Germany
- German Center for Neurodegenerative Diseases (DZNE) Dresden, Dresden, Germany
| | - Lisa Maria Steinheuer
- Department Computational Biology, Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany
| | - Madalena Carido
- Center for Regenerative Therapies Dresden (CRTD), Technische Universität Dresden, Dresden, Germany
| | - Thomas Kurth
- Technische Universität Dresden, Center for Molecular and Cellular Bioengineering (CMCB), Technology Platform Core Facility Electron Microscopy and Histology, Dresden, Germany
| | - Ali Yazbeck
- Department Computational Biology, Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany
| | - Jana Schor
- Department Computational Biology, Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany
| | - Stephanie Wieneke
- German Center for Neurodegenerative Diseases (DZNE) Dresden, Dresden, Germany
| | - Lynn J A Ebner
- German Center for Neurodegenerative Diseases (DZNE) Dresden, Dresden, Germany
| | | | - David Taborsky
- German Center for Neurodegenerative Diseases (DZNE) Dresden, Dresden, Germany
| | - Katja Zoschke
- German Center for Neurodegenerative Diseases (DZNE) Dresden, Dresden, Germany
| | - Marlen Vogt
- Center for Regenerative Therapies Dresden (CRTD), Technische Universität Dresden, Dresden, Germany
| | - Sebastian Canzler
- Department Computational Biology, Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany
| | - Andreas Hermann
- Center for Regenerative Therapies Dresden (CRTD), Technische Universität Dresden, Dresden, Germany
- German Center for Neurodegenerative Diseases (DZNE) Dresden, Dresden, Germany
- Department of Neurology, Technische Universität Dresden, 01307, Dresden, Germany
| | - Shahryar Khattak
- Center for Regenerative Therapies Dresden (CRTD), Technische Universität Dresden, Dresden, Germany
- Technische Universität Dresden, Center for Molecular and Cellular Bioengineering (CMCB), Technology Platform Core Facility Electron Microscopy and Histology, Dresden, Germany
| | - Jörg Hackermüller
- Department Computational Biology, Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany
- Department of Computer Science, Leipzig University, Leipzig, Germany
| | - Mike O Karl
- Center for Regenerative Therapies Dresden (CRTD), Technische Universität Dresden, Dresden, Germany.
- German Center for Neurodegenerative Diseases (DZNE) Dresden, Dresden, Germany.
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32
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Effects of the Implementation of an Emergency Surgical Pattern in Patients with Rhegmatogenous Retinal Detachment: A Retrospective Observational Study. J Ophthalmol 2022; 2022:4240225. [PMID: 36276920 PMCID: PMC9586816 DOI: 10.1155/2022/4240225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 07/15/2022] [Accepted: 09/30/2022] [Indexed: 11/29/2022] Open
Abstract
Background To analyze the effects of the implementation of emergency surgical patterns in patients with rhegmatogenous retinal detachment (RRD) and provide evidence for promoting emergency surgical patterns for RRD. Methods We reviewed the electronic medical records of 346 patients (348 eyes) who underwent surgical repair of RRD at the Zhongshan Ophthalmic Center in Southern China. A total of 140 patients (140 eyes) in the routine inpatient surgery group were collected at the fundus disease department between January 2019 and December 2019, and 206 patients (208 eyes) in the emergency surgery group were collected at the ophthalmic emergency department between January 2021 and December 2021. Demographics, best-corrected visual acuity (BCVA) expressed as the logarithm of the minimum angle of resolution (logMAR), the status of the macula before surgery, time to presentation, treatment interval, and postoperative BCVA measured at least three months follow-up were compared. Results The preoperative BCVA (logMAR) of the emergency surgery group and the inpatient surgery group were 1.0 (0.4–1.7) and 1.4 (0.7–1.7), respectively, with significant differences between groups (P < 0.001). However, patients had a shorter time to presentation (7 days vs. 21 days, P < 0.001), shorter treatment interval (2 days vs. 12 days, P < 0.01), and significantly better postoperative BCVA (logMAR 0.5 vs. logMAR 1.0, P < 0.001) in the emergency surgery group than in the inpatient surgery group. There was no significant difference in primary anatomical success between the two groups (P=0.802). The median follow-up for the emergency surgery group and the inpatient surgery group were 6.08 months and 6.2 months, respectively, with no significant differences (P > 0.05). Conclusions Patients who underwent emergency surgical patterns of RRD had better visual outcomes after surgery than patients with routine inpatient surgery, which might be attributed to a shorter duration, shorter treatment interval, and the preoperative status of the macula in the emergency surgery pattern. Emergency surgical patterns for RRD should be considered to achieve better surgical outcomes in suitable patients.
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33
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Yao J, Wang T, Jia L, Qiu Y, Zacks DN. Loss of Fas Receptor Function Preserves Photoreceptor Structure and Function in Two Mouse Models of Inherited Retinal Degeneration. Invest Ophthalmol Vis Sci 2022; 63:5. [PMID: 36083588 PMCID: PMC9469031 DOI: 10.1167/iovs.63.10.5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Purpose The genetic heterogeneity of inherited retinal degeneration (IRD) has limited the development of mutation-specific therapies, necessitating the development of therapeutic approaches targeting broadly shared pathophysiologic pathways. The Fas receptor has been reported as a contributor to retinal cell death and inflammation in a wide variety of ocular diseases. The purpose of this study was to assess targeting the Fas pathway as a novel mutation-independent approach to improve photoreceptor survival in IRD. Methods We examined the effects of genetic inactivation of the Fas receptor on retinal degeneration in two distinct IRD mouse models, P23H and rd10. The Fas-lpr mouse, which contains a functionally inactive Fas receptor, was crossed with the P23H and rd10 mice to generate P23H/Fas-lpr and rd10/Fas-lpr mice. Fas activation, photoreceptor survival and retinal function were assessed. Results We detected elevated levels of Fas receptor and microglial activation in the retinas of both P23H and rd10 mice. Inactivation of Fas in these two IRD models (P23H/Fas-lpr and rd10/Fas-lpr mice) resulted in reduced cell death, increased photoreceptor survival, improved retinal function, and reduced microglial activation and inflammatory cytokine production. Conclusions The protective effect of a nonfunctional Fas receptor in two different mouse models of retinal degeneration suggests that whereas the individual IRD mutation may be specific, the retina's response to the different stressors appears to be shared and driven by Fas. Reducing Fas activity might represent a potential mutation-independent therapeutic approach to preserve retinal structure and function in patients with IRD.
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Affiliation(s)
- Jingyu Yao
- Department of Ophthalmology and Visual Sciences, University of Michigan Medical School, Kellogg Eye Center, Ann Arbor, Michigan, United States
| | - Tiantian Wang
- Department of Ophthalmology and Visual Sciences, University of Michigan Medical School, Kellogg Eye Center, Ann Arbor, Michigan, United States.,Department of Ophthalmology, Xiangya School of Medicine, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Lin Jia
- Department of Ophthalmology and Visual Sciences, University of Michigan Medical School, Kellogg Eye Center, Ann Arbor, Michigan, United States
| | - Yaoyan Qiu
- Department of Ophthalmology and Visual Sciences, University of Michigan Medical School, Kellogg Eye Center, Ann Arbor, Michigan, United States.,Department of Ophthalmology, Shanghai Tenth People's Hospital, Tongji University, Shanghai, China
| | - David N Zacks
- Department of Ophthalmology and Visual Sciences, University of Michigan Medical School, Kellogg Eye Center, Ann Arbor, Michigan, United States
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34
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Neuroprotection for Age-Related Macular Degeneration. OPHTHALMOLOGY SCIENCE 2022; 2:100192. [PMID: 36570623 PMCID: PMC9767822 DOI: 10.1016/j.xops.2022.100192] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 06/24/2022] [Accepted: 06/28/2022] [Indexed: 12/27/2022]
Abstract
Age-related macular degeneration (AMD) is a leading cause of blindness worldwide. Early to intermediate AMD is characterized by the accumulation of lipid- and protein-rich drusen. Late stages of the disease are characterized by the development of choroidal neovascularization, termed "exudative" or "neovascular AMD," or retinal pigment epithelium (RPE) cell and photoreceptor death, termed "geographic atrophy" (GA) in advanced nonexudative AMD. Although we have effective treatments for exudative AMD in the form of anti-VEGF agents, they have no role for patients with GA. Neuroprotection strategies have emerged as a possible way to slow photoreceptor degeneration and vision loss in patients with GA. These approaches include reduction of oxidative stress, modulation of the visual cycle, reduction of toxic molecules, inhibition of pathologic protein activity, prevention of cellular apoptosis or programmed necrosis (necroptosis), inhibition of inflammation, direct activation of neurotrophic factors, delivery of umbilical tissue-derived cells, and RPE replacement. Despite active investigation in this area and significant promise based on preclinical studies, many clinical studies have not yielded successful results. We discuss selected past and current neuroprotection trials for AMD, highlight the lessons learned from these past studies, and discuss our perspective regarding remaining questions that must be answered before neuroprotection can be successfully applied in the field of AMD research.
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Key Words
- AD, Alzheimer disease
- ALA, alpha lipoic acid
- AMD, age-related macular degeneration
- AREDS, Age-Related Eye Disease Study
- AREDS2, Age-Related Eye Disease Study 2
- Age-related macular degeneration
- CFH, complement factor H
- CNTF, ciliary neurotrophic factor
- GA, geographic atrophy
- HTRA1, high-temperature requirement A1
- IOP, intraocular pressure
- Neuroprotection
- RBP, retinol-binding protein
- RGC, retinal ganglion cell
- RIPK3, receptor-interacting serine/threonine-protein kinase 3
- ROS, reactive oxygen species
- RPE, retinal pigment epithelium
- Retinal degeneration
- VA, visual acuity
- iPSC, induced pluripotent stem cell
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35
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Yiew NKH, Finck BN. The mitochondrial pyruvate carrier at the crossroads of intermediary metabolism. Am J Physiol Endocrinol Metab 2022; 323:E33-E52. [PMID: 35635330 PMCID: PMC9273276 DOI: 10.1152/ajpendo.00074.2022] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 05/04/2022] [Accepted: 05/18/2022] [Indexed: 11/22/2022]
Abstract
Pyruvate metabolism, a central nexus of carbon homeostasis, is an evolutionarily conserved process and aberrant pyruvate metabolism is associated with and contributes to numerous human metabolic disorders including diabetes, cancer, and heart disease. As a product of glycolysis, pyruvate is primarily generated in the cytosol before being transported into the mitochondrion for further metabolism. Pyruvate entry into the mitochondrial matrix is a critical step for efficient generation of reducing equivalents and ATP and for the biosynthesis of glucose, fatty acids, and amino acids from pyruvate. However, for many years, the identity of the carrier protein(s) that transported pyruvate into the mitochondrial matrix remained a mystery. In 2012, the molecular-genetic identification of the mitochondrial pyruvate carrier (MPC), a heterodimeric complex composed of protein subunits MPC1 and MPC2, enabled studies that shed light on the many metabolic and physiological processes regulated by pyruvate metabolism. A better understanding of the mechanisms regulating pyruvate transport and the processes affected by pyruvate metabolism may enable novel therapeutics to modulate mitochondrial pyruvate flux to treat a variety of disorders. Herein, we review our current knowledge of the MPC, discuss recent advances in the understanding of mitochondrial pyruvate metabolism in various tissue and cell types, and address some of the outstanding questions relevant to this field.
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Affiliation(s)
- Nicole K H Yiew
- Center for Human Nutrition, Washington University School of Medicine, St. Louis, Missouri
| | - Brian N Finck
- Center for Human Nutrition, Washington University School of Medicine, St. Louis, Missouri
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36
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Luo S, Xu H, Gong X, Shen J, Chen X, Wu Z. The complement C3a‑C3aR and C5a‑C5aR pathways promote viability and inflammation of human retinal pigment epithelium cells by targeting NF‑κB signaling. Exp Ther Med 2022; 24:493. [PMID: 35837068 PMCID: PMC9257899 DOI: 10.3892/etm.2022.11420] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 04/08/2022] [Indexed: 11/05/2022] Open
Abstract
Retinal detachment (RD) and its special form of rhegmatogenous RD associated with choroidal detachment (RRDCD) feature similar pathological alterations, including enhanced retinal cell inflammation. Although the importance of the complement components C3a and C5a and their corresponding receptors in retinal maintenance has been demonstrated, the relevance of these molecules to the pathogenesis of RD or RRDCD remains to be investigated. The contents of C3a, C5a and inflammatory factors, such as TNF-α, IL-1β, IL-6 and prostaglandin (PG)E2, in related clinical samples were examined by ELISA. Subsequently, human retinal pigment epithelial (HRPE) cells were subjected to challenge with the C3a and C5a recombinant proteins with or without C3a and C5a antagonists and NF-κB inhibitor, and the cell viability and inflammatory cytokines were then determined by a Cell Counting Kit-8 assay and ELISA, respectively. In addition, reverse transcription-quantitative PCR and western blot analyses were utilized to examine the mRNA or/and protein levels of C3a and its receptor C3aR, as well as C5a and its receptor C5aR, and NF-κB. In addition, the correlation of C3a and C5a with the aforementioned inflammatory factors was analyzed. The inflammatory factor levels of C3a and C5a were considerably elevated in patients with RRDCD compared to those in the controls. Consistently, C3a and C5a treatment led to increased cell viability and aggravated inflammation in HRPE cells. Accordingly, C3a and C5a induced upregulation of their corresponding receptors C3aR and C5aR, which was in turn observed to be linked to the activation of the NF-κB signaling pathway. Furthermore, there was a positive correlation of the complements C3a and C5a with individual TNF-α, IL-1β, IL-6 and PGE2. Taken together, the C3a-C3aR and C5a-C5aR pathways were indicated to promote cell viability and inflammation of HRPE cells by targeting the NF-κB signaling pathway.
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Affiliation(s)
- Shasha Luo
- Department of Ophthalmology, Nanjing Medical University Affiliated Wuxi Second Hospital, Wuxi, Jiangsu 214002, P.R. China
| | - Huiyan Xu
- Department of Ophthalmology, Nanjing Medical University Affiliated Wuxi Second Hospital, Wuxi, Jiangsu 214002, P.R. China
| | - Xuechun Gong
- Department of Ophthalmology, Nanjing Medical University Affiliated Wuxi Second Hospital, Wuxi, Jiangsu 214002, P.R. China
| | - Jinyan Shen
- Department of Ophthalmology, Nanjing Medical University Affiliated Wuxi Second Hospital, Wuxi, Jiangsu 214002, P.R. China
| | - Xuan Chen
- Department of Ophthalmology, Nanjing Medical University Affiliated Wuxi Second Hospital, Wuxi, Jiangsu 214002, P.R. China
| | - Zhifeng Wu
- Department of Ophthalmology, Nanjing Medical University Affiliated Wuxi Second Hospital, Wuxi, Jiangsu 214002, P.R. China
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Liu W, Liu S, Li P, Yao K. Retinitis Pigmentosa: Progress in Molecular Pathology and Biotherapeutical Strategies. Int J Mol Sci 2022; 23:ijms23094883. [PMID: 35563274 PMCID: PMC9101511 DOI: 10.3390/ijms23094883] [Citation(s) in RCA: 49] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 04/25/2022] [Accepted: 04/26/2022] [Indexed: 12/13/2022] Open
Abstract
Retinitis pigmentosa (RP) is genetically heterogeneous retinopathy caused by photoreceptor cell death and retinal pigment epithelial atrophy that eventually results in blindness in bilateral eyes. Various photoreceptor cell death types and pathological phenotypic changes that have been disclosed in RP demand in-depth research of its pathogenic mechanism that may account for inter-patient heterogeneous responses to mainstream drug treatment. As the primary method for studying the genetic characteristics of RP, molecular biology has been widely used in disease diagnosis and clinical trials. Current technology iterations, such as gene therapy, stem cell therapy, and optogenetics, are advancing towards precise diagnosis and clinical applications. Specifically, technologies, such as effective delivery vectors, CRISPR/Cas9 technology, and iPSC-based cell transplantation, hasten the pace of personalized precision medicine in RP. The combination of conventional therapy and state-of-the-art medication is promising in revolutionizing RP treatment strategies. This article provides an overview of the latest research on the pathogenesis, diagnosis, and treatment of retinitis pigmentosa, aiming for a convenient reference of what has been achieved so far.
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Peters MC, Murray-Douglass A, Park J, Cheng SSH, Sharma AK, Sharma A, Vandeleur KW, Lee LR, Moloney TP. 360-Degree laser retinopexy in primary vitrectomy for rhegmatogenous retinal detachment: factors associated with its use and impact on surgical outcomes. Int J Retina Vitreous 2022; 8:28. [PMID: 35387685 PMCID: PMC8985359 DOI: 10.1186/s40942-022-00377-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 03/20/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND To determine patient and surgical factors associated with the use of 360-degree laser retinopexy during primary pars plana vitrectomy (PPV) ± scleral buckle (SB) for rhegmatogenous retinal detachment (RRD) and its impact on surgical outcomes. METHODS Patients who underwent PPV ± SB for repair of non-complex RRD at a single centre were included in this retrospective study. The primary outcome was single surgery anatomical success (SSAS). Secondary outcomes included visual acuity, epiretinal membrane formation, the presence of cystoid macular oedema, tonic pupil and corneal epithelial defects. Multiple logistic regression and multivariate regression was used. RESULTS The study included 192 cases, of which 130 received 360-degree laser. Worse preoperative logMAR visual acuity (P = 0.009), male sex (P = 0.060), higher PVR grades, supplemental SB (P = 0.0468) and silicone oil/C3F8 tamponade (P < 0.0001) were associated with 360-degree laser use. No significant associations between 360-degree laser and SSAS (P = 0.079), final logMAR visual acuity (P = 0.0623), ERM development (P = 0.8208), postoperative CMO (P = 0.5946), tonic pupil (P > 0.9999) or corneal epithelial defects (P = N/A) were found. CONCLUSIONS 360-degree laser retinopexy during primary PPV ± SB for RRD was associated with more complex cases and more extensive operations. Even when accounting for this, there was no difference in surgical outcomes or complication rates.
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Affiliation(s)
- Matthew C Peters
- Ophthalmology Department, Royal Brisbane and Women's Hospital, Level 8, Ned Hanlon Building, Butterfield Street, Herston, QLD, 4029, Australia
| | - Alexander Murray-Douglass
- Ophthalmology Department, Royal Brisbane and Women's Hospital, Level 8, Ned Hanlon Building, Butterfield Street, Herston, QLD, 4029, Australia
| | - Joseph Park
- Ophthalmology Department, Royal Brisbane and Women's Hospital, Level 8, Ned Hanlon Building, Butterfield Street, Herston, QLD, 4029, Australia
| | - Sean S H Cheng
- Ophthalmology Department, Royal Brisbane and Women's Hospital, Level 8, Ned Hanlon Building, Butterfield Street, Herston, QLD, 4029, Australia
| | - Anil K Sharma
- Ophthalmology Department, Royal Brisbane and Women's Hospital, Level 8, Ned Hanlon Building, Butterfield Street, Herston, QLD, 4029, Australia
| | - Abhishek Sharma
- Ophthalmology Department, Royal Brisbane and Women's Hospital, Level 8, Ned Hanlon Building, Butterfield Street, Herston, QLD, 4029, Australia
| | - Kevin W Vandeleur
- Ophthalmology Department, Royal Brisbane and Women's Hospital, Level 8, Ned Hanlon Building, Butterfield Street, Herston, QLD, 4029, Australia
| | - Lawrence R Lee
- Ophthalmology Department, Royal Brisbane and Women's Hospital, Level 8, Ned Hanlon Building, Butterfield Street, Herston, QLD, 4029, Australia
| | - Thomas P Moloney
- Ophthalmology Department, Royal Brisbane and Women's Hospital, Level 8, Ned Hanlon Building, Butterfield Street, Herston, QLD, 4029, Australia.
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Usategui-Martín R, Puertas-Neyra K, Galindo-Cabello N, Hernández-Rodríguez LA, González-Pérez F, Rodríguez-Cabello JC, González-Sarmiento R, Pastor JC, Fernandez-Bueno I. Retinal Neuroprotective Effect of Mesenchymal Stem Cells Secretome Through Modulation of Oxidative Stress, Autophagy, and Programmed Cell Death. Invest Ophthalmol Vis Sci 2022; 63:27. [PMID: 35486068 PMCID: PMC9055551 DOI: 10.1167/iovs.63.4.27] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/09/2022] Open
Abstract
Purpose Degenerative mechanisms of retinal neurodegenerative diseases (RND) share common cellular and molecular signalization pathways. Curative treatment does not exist and cell-based therapy, through the paracrine properties of mesenchymal stem cells (MSC), is a potential unspecific treatment for RND. This study aimed to evaluate the neuroprotective capability of human bone marrow (bm) MSC secretome and its potential to modulate retinal responses to neurodegeneration. Methods An in vitro model of spontaneous retinal neurodegeneration was used to compare three days of monocultured neuroretina (NR), NR cocultured with bmMSC, and NR cultured with bmMSC secretome. We evaluated retinal morphology markers (Lectin peanut agglutinin, rhodopsin, protein kinase C α isoform, neuronal-specific nuclear protein, glial fibrillary acidic protein, TdT-mediated dUTP nick-end labeling, and vimentin) and proteins involved in apoptosis (apoptosis-inductor factor, caspase-3), necroptosis (MLKL), and autophagy (p62). Besides, we analyzed the relative mRNA expression through qPCR of genes involved in apoptosis (BAX, BCL2, CASP3, CASP8, CASP9), necroptosis (MLKL, RIPK1, RIPK3), autophagy (ATG7, BCLIN1, LC3B, mTOR, SQSTM1), oxidative stress (COX2, CYBA, CYBB, GPX6, SOD1, TXN2, TXNRD1) and inflammation (IL1, IL6, IL10, TGFb1, TNFa). Results The bmMSC secretome preserves retinal morphology, limits pro-apoptotic- and pro-necroptotic-related gene and protein expression, modulates autophagy-related genes and proteins, and stimulates the activation of antioxidant-associated genes. Conclusions The neuroprotective ability of the bmMSC secretome is associated with activation of antioxidant machinery, modulation of autophagy, and inhibition of apoptosis and necroptosis during retinal degeneration. The neuroprotective effect of bmMSC secretomes in the presence/absence of MSC looks similar. Our current results reinforce the hypothesis that the human bmMSC secretome slows retinal neurodegeneration and may be a therapeutic option for treating RND.
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Affiliation(s)
- Ricardo Usategui-Martín
- Instituto Universitario de Oftalmobiología Aplicada, Retina Group, Universidad de Valladolid, Valladolid, Spain.,Centro en Red de Medicina Regenerativa y Terapia Celular de Castilla y León, Valladolid, Spain.,Red Temática de Investigación Cooperativa en Salud, Oftared, Instituto de Salud Carlos III, Valladolid, Spain.,RetiBrain (RED2018-102499-T), Ministerio de Ciencia, Innovación y Universidades, Valladolid, Spain
| | - Kevin Puertas-Neyra
- Instituto Universitario de Oftalmobiología Aplicada, Retina Group, Universidad de Valladolid, Valladolid, Spain
| | - Nadia Galindo-Cabello
- Instituto Universitario de Oftalmobiología Aplicada, Retina Group, Universidad de Valladolid, Valladolid, Spain.,Postgraduate Unit, Faculty of Biological Sciences, National University of San Marcos, Lima, Peru
| | | | - Fernando González-Pérez
- Group for Advanced Materials and Nanobiotechnology (GIR BIOFORGE), CIBER-BBN, Edificio LUCIA, Universidad de Valladolid, Paseo Belén 19, Valladolid, Spain
| | - José Carlos Rodríguez-Cabello
- Centro en Red de Medicina Regenerativa y Terapia Celular de Castilla y León, Valladolid, Spain.,Group for Advanced Materials and Nanobiotechnology (GIR BIOFORGE), CIBER-BBN, Edificio LUCIA, Universidad de Valladolid, Paseo Belén 19, Valladolid, Spain
| | - Rogelio González-Sarmiento
- Molecular Medicine Unit, Department of Medicine, University of Salamanca, Salamanca, Spain.,Institute of Biomedical Research of Salamanca, Salamanca, Spain.,Institute of Molecular and Cellular Biology of Cancer, University of Salamanca-CSIC, Salamanca, Spain
| | - José Carlos Pastor
- Instituto Universitario de Oftalmobiología Aplicada, Retina Group, Universidad de Valladolid, Valladolid, Spain.,Centro en Red de Medicina Regenerativa y Terapia Celular de Castilla y León, Valladolid, Spain.,Red Temática de Investigación Cooperativa en Salud, Oftared, Instituto de Salud Carlos III, Valladolid, Spain.,RetiBrain (RED2018-102499-T), Ministerio de Ciencia, Innovación y Universidades, Valladolid, Spain
| | - Ivan Fernandez-Bueno
- Instituto Universitario de Oftalmobiología Aplicada, Retina Group, Universidad de Valladolid, Valladolid, Spain.,Centro en Red de Medicina Regenerativa y Terapia Celular de Castilla y León, Valladolid, Spain.,Red Temática de Investigación Cooperativa en Salud, Oftared, Instituto de Salud Carlos III, Valladolid, Spain.,RetiBrain (RED2018-102499-T), Ministerio de Ciencia, Innovación y Universidades, Valladolid, Spain
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Gibbons L, Ozaki E, Greene C, Trappe A, Carty M, Coppinger JA, Bowie AG, Campbell M, Doyle SL. SARM1 Promotes Photoreceptor Degeneration in an Oxidative Stress Model of Retinal Degeneration. Front Neurosci 2022; 16:852114. [PMID: 35431772 PMCID: PMC9012108 DOI: 10.3389/fnins.2022.852114] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 03/04/2022] [Indexed: 11/13/2022] Open
Abstract
SARM1 (sterile alpha and armadillo motif-containing protein) is a highly conserved Toll/IL-1 Receptor (TIR) adaptor with important roles in mediating immune responses. Studies in the brain have shown that SARM1 plays a role in induction of neuronal axon degeneration in response to a variety of injuries. We recently demonstrated that SARM1 is pro-degenerative in a genetic model of inherited retinopathy. This current study aimed to characterise the effect of SARM1 deletion in an alternative model of retinal degeneration (RD) in which the retinal pigment epithelium (RPE) fragments following administration of oxidising agent, sodium iodate (NaIO3), leading to subsequent photoreceptor cell death. Following administration of NaIO3, we observed no apparent difference in rate of loss of RPE integrity in SARM1 deficient mice compared to WT counterparts. However, despite no differences in RPE degeneration, photoreceptor cell number and retinal thickness were increased in Sarm1–/– mice compared to WT counterparts. This apparent protection of the photoreceptors in SARM1 deficient mice is supported by an observed decrease in pro-apoptotic caspase-3 in the photoreceptor layer of Sarm1–/– mice compared to WT. Together these data indicate a pro-degenerative role for SARM1 in the photoreceptors, but not in the RPE, in an oxidative stress induced model of retinal degeneration consistent with its known degenerative role in neurons in a range of neurodegenerative settings.
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Affiliation(s)
- Luke Gibbons
- Trinity College Institute of Neuroscience, Trinity College Dublin, Dublin, Ireland
- Department of Clinical Medicine, School of Medicine, Trinity College Dublin, Dublin, Ireland
| | - Ema Ozaki
- Trinity College Institute of Neuroscience, Trinity College Dublin, Dublin, Ireland
- Department of Clinical Medicine, School of Medicine, Trinity College Dublin, Dublin, Ireland
| | - Chris Greene
- Smurfit Institute of Genetics, Trinity College Dublin, Dublin, Ireland
| | - Anne Trappe
- School of Pharmacy and Biomolecular Sciences, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Michael Carty
- School of Biochemistry and Immunology, Trinity College Dublin, Dublin, Ireland
- Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - Judith A. Coppinger
- School of Pharmacy and Biomolecular Sciences, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Andrew G. Bowie
- School of Biochemistry and Immunology, Trinity College Dublin, Dublin, Ireland
- Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - Matthew Campbell
- Smurfit Institute of Genetics, Trinity College Dublin, Dublin, Ireland
| | - Sarah L. Doyle
- Trinity College Institute of Neuroscience, Trinity College Dublin, Dublin, Ireland
- Department of Clinical Medicine, School of Medicine, Trinity College Dublin, Dublin, Ireland
- *Correspondence: Sarah L. Doyle,
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Ando Y, Keino H, Inoue M, Hirota K, Takahashi H, Sano K, Koto T, Sato T, Takeuchi M, Hirakata A. Circulating Vitreous microRNA as Possible Biomarker in High Myopic Eyes with Macular Hole. Int J Mol Sci 2022; 23:ijms23073647. [PMID: 35409006 PMCID: PMC8998168 DOI: 10.3390/ijms23073647] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 03/22/2022] [Accepted: 03/23/2022] [Indexed: 01/27/2023] Open
Abstract
High myopia is a major cause of irreversible visual impairment globally. In the present study, we investigated the microRNA (miRNA) profile in the vitreous of macular hole (MH) and high myopic MH. We performed miRNA analysis using TaqMan® Low Density Arrays (Thermo Fisher Scientific, Waltham, MA, USA) to investigate the circulating vitreous miRNA profile from patients with MH (axial length < 26.5 mm, n = 11) and high myopic MH (axial length ≥ 26.5 mm, n = 11) who underwent pars plana vitrectomy. The vitreous inflammatory cytokine signature was examined in high myopic MH eyes using a multiplex assay. A miRNA-Array analysis revealed that let-7c was significantly up-regulated and miR-200a was significantly down-regulated in high myopic MH eyes compared to those in MH eyes. The bioinformatics analysis for up-regulated miRNA targeted gene identified 23 pathways including mitogen-activated protein kinase (MAPK) and several inflammatory signaling pathways, whereas the bioinformatics analysis for down-regulated miRNA targeted genes showed 32 enriched pathways including phosphoinositide 3-kinase/protein kinase B (PI3K/AKT). The levels of inflammatory cytokines including IP-10, IFN-γ, and MCP-1 were significantly higher in the vitreous of high myopic MH eyes. These results suggest that specific miRNAs expressed in the vitreous may be associated with the pathological condition of high myopic MH and the above mentioned miRNAs may contribute to the development of inflammatory status in the vitreous of high myopic eyes.
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Affiliation(s)
- Yoshimasa Ando
- Department of Ophthalmology, Kyorin University School of Medicine, 6-20-2 Shinkawa, Mitaka, Tokyo 181-8611, Japan; (Y.A.); (M.I.); (K.H.); (H.T.); (K.S.); (T.K.); (A.H.)
| | - Hiroshi Keino
- Department of Ophthalmology, Kyorin University School of Medicine, 6-20-2 Shinkawa, Mitaka, Tokyo 181-8611, Japan; (Y.A.); (M.I.); (K.H.); (H.T.); (K.S.); (T.K.); (A.H.)
- Correspondence: ; Tel.: +81-422-47-5511
| | - Makoto Inoue
- Department of Ophthalmology, Kyorin University School of Medicine, 6-20-2 Shinkawa, Mitaka, Tokyo 181-8611, Japan; (Y.A.); (M.I.); (K.H.); (H.T.); (K.S.); (T.K.); (A.H.)
| | - Kazunari Hirota
- Department of Ophthalmology, Kyorin University School of Medicine, 6-20-2 Shinkawa, Mitaka, Tokyo 181-8611, Japan; (Y.A.); (M.I.); (K.H.); (H.T.); (K.S.); (T.K.); (A.H.)
| | - Hiroyuki Takahashi
- Department of Ophthalmology, Kyorin University School of Medicine, 6-20-2 Shinkawa, Mitaka, Tokyo 181-8611, Japan; (Y.A.); (M.I.); (K.H.); (H.T.); (K.S.); (T.K.); (A.H.)
- Department of Ophthalmology and Visual Science, Tokyo Medical and Dental University, 1-5-45, Yushima, Bunkyo-ku, Tokyo 113-8519, Japan
| | - Kimihiko Sano
- Department of Ophthalmology, Kyorin University School of Medicine, 6-20-2 Shinkawa, Mitaka, Tokyo 181-8611, Japan; (Y.A.); (M.I.); (K.H.); (H.T.); (K.S.); (T.K.); (A.H.)
| | - Takashi Koto
- Department of Ophthalmology, Kyorin University School of Medicine, 6-20-2 Shinkawa, Mitaka, Tokyo 181-8611, Japan; (Y.A.); (M.I.); (K.H.); (H.T.); (K.S.); (T.K.); (A.H.)
| | - Tomohito Sato
- Department of Ophthalmology, National Defense Medical College, 3-2, Namiki, Tokorozawa 359-8513, Japan; (T.S.); (M.T.)
| | - Masaru Takeuchi
- Department of Ophthalmology, National Defense Medical College, 3-2, Namiki, Tokorozawa 359-8513, Japan; (T.S.); (M.T.)
| | - Akito Hirakata
- Department of Ophthalmology, Kyorin University School of Medicine, 6-20-2 Shinkawa, Mitaka, Tokyo 181-8611, Japan; (Y.A.); (M.I.); (K.H.); (H.T.); (K.S.); (T.K.); (A.H.)
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Santos FM, Mesquita J, Castro-de-Sousa JP, Ciordia S, Paradela A, Tomaz CT. Vitreous Humor Proteome: Targeting Oxidative Stress, Inflammation, and Neurodegeneration in Vitreoretinal Diseases. Antioxidants (Basel) 2022; 11:505. [PMID: 35326156 PMCID: PMC8944522 DOI: 10.3390/antiox11030505] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Revised: 03/03/2022] [Accepted: 03/04/2022] [Indexed: 12/12/2022] Open
Abstract
Oxidative stress is defined as an unbalance between pro-oxidants and antioxidants, as evidenced by an increase in reactive oxygen and reactive nitrogen species production over time. It is important in the pathophysiology of retinal disorders such as diabetic retinopathy, age-related macular degeneration, retinal detachment, and proliferative vitreoretinopathy, which are the focus of this article. Although the human organism's defense mechanisms correct autoxidation caused by endogenous or exogenous factors, this may be insufficient, causing an imbalance in favor of excessive ROS production or a weakening of the endogenous antioxidant system, resulting in molecular and cellular damage. Furthermore, modern lifestyles and environmental factors contribute to increased chemical exposure and stress induction, resulting in oxidative stress. In this review, we discuss the current information about oxidative stress and the vitreous proteome with a special focus on vitreoretinal diseases. Additionally, we explore therapies using antioxidants in an attempt to rescue the body from oxidation, restore balance, and maximize healthy body function, as well as new investigational therapies that have shown significant therapeutic potential in preclinical studies and clinical trial outcomes, along with their goals and strategic approaches to combat oxidative stress.
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Affiliation(s)
- Fátima Milhano Santos
- CICS-UBI—Centro de Investigação em Ciências da Saúde, Universidade da Beira Interior, 6201-001 Covilhã, Portugal; or (J.P.C.-d.-S.)
- Unidad de Proteomica, Centro Nacional de Biotecnología, CSIC, Campus de Cantoblanco, 28049 Madrid, Spain; (S.C.); (A.P.)
- C4-UBI, Cloud Computing Competence Centre, University of Beira Interior, 6200-501 Covilhã, Portugal
| | - Joana Mesquita
- CICS-UBI—Centro de Investigação em Ciências da Saúde, Universidade da Beira Interior, 6201-001 Covilhã, Portugal; or (J.P.C.-d.-S.)
| | - João Paulo Castro-de-Sousa
- CICS-UBI—Centro de Investigação em Ciências da Saúde, Universidade da Beira Interior, 6201-001 Covilhã, Portugal; or (J.P.C.-d.-S.)
- Department of Ophthalmology, Centro Hospitalar de Leiria, 2410-197 Leiria, Portugal
| | - Sergio Ciordia
- Unidad de Proteomica, Centro Nacional de Biotecnología, CSIC, Campus de Cantoblanco, 28049 Madrid, Spain; (S.C.); (A.P.)
| | - Alberto Paradela
- Unidad de Proteomica, Centro Nacional de Biotecnología, CSIC, Campus de Cantoblanco, 28049 Madrid, Spain; (S.C.); (A.P.)
| | - Cândida Teixeira Tomaz
- CICS-UBI—Centro de Investigação em Ciências da Saúde, Universidade da Beira Interior, 6201-001 Covilhã, Portugal; or (J.P.C.-d.-S.)
- C4-UBI, Cloud Computing Competence Centre, University of Beira Interior, 6200-501 Covilhã, Portugal
- Chemistry Department, Faculty of Sciences, University of Beira Interior, 6201-001 Covilhã, Portugal
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Collin GB, Shi L, Yu M, Akturk N, Charette JR, Hyde LF, Weatherly SM, Pera MF, Naggert JK, Peachey NS, Nishina PM, Krebs MP. A Splicing Mutation in Slc4a5 Results in Retinal Detachment and Retinal Pigment Epithelium Dysfunction. Int J Mol Sci 2022; 23:2220. [PMID: 35216333 PMCID: PMC8875008 DOI: 10.3390/ijms23042220] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Revised: 02/13/2022] [Accepted: 02/14/2022] [Indexed: 12/29/2022] Open
Abstract
Fluid and solute transporters of the retinal pigment epithelium (RPE) are core components of the outer blood-retinal barrier. Characterizing these transporters and their role in retinal homeostasis may provide insights into ocular function and disease. Here, we describe RPE defects in tvrm77 mice, which exhibit hypopigmented patches in the central retina. Mapping and nucleotide sequencing of tvrm77 mice revealed a disrupted 5' splice donor sequence in Slc4a5, a sodium bicarbonate cotransporter gene. Slc4a5 expression was reduced 19.7-fold in tvrm77 RPE relative to controls, and alternative splice variants were detected. SLC4A5 was localized to the Golgi apparatus of cultured human RPE cells and in apical and basal membranes. Fundus imaging, optical coherence tomography, microscopy, and electroretinography (ERG) of tvrm77 mice revealed retinal detachment, hypopigmented patches corresponding to neovascular lesions, and retinal folds. Detachment worsened and outer nuclear layer thickness decreased with age. ERG a- and b-wave response amplitudes were initially normal but declined in older mice. The direct current ERG fast oscillation and light peak were reduced in amplitude at all ages, whereas other RPE-associated responses were unaffected. These results link a new Slc4a5 mutation to subretinal fluid accumulation and altered light-evoked RPE electrophysiological responses, suggesting that SLC4A5 functions at the outer blood-retinal barrier.
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Affiliation(s)
- Gayle B. Collin
- The Jackson Laboratory, 600 Main Street, Bar Harbor, ME 04609, USA; (G.B.C.); (L.S.); (N.A.); (J.R.C.); (L.F.H.); (S.M.W.); (M.F.P.); (J.K.N.)
| | - Lanying Shi
- The Jackson Laboratory, 600 Main Street, Bar Harbor, ME 04609, USA; (G.B.C.); (L.S.); (N.A.); (J.R.C.); (L.F.H.); (S.M.W.); (M.F.P.); (J.K.N.)
| | - Minzhong Yu
- Department of Ophthalmic Research, Cole Eye Institute, Cleveland Clinic Foundation, 9500 Euclid Avenue, Cleveland, OH 44195, USA; (M.Y.); (N.S.P.)
- Department of Ophthalmology, Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, 9500 Euclid Avenue, Cleveland, OH 44195, USA
| | - Nurten Akturk
- The Jackson Laboratory, 600 Main Street, Bar Harbor, ME 04609, USA; (G.B.C.); (L.S.); (N.A.); (J.R.C.); (L.F.H.); (S.M.W.); (M.F.P.); (J.K.N.)
| | - Jeremy R. Charette
- The Jackson Laboratory, 600 Main Street, Bar Harbor, ME 04609, USA; (G.B.C.); (L.S.); (N.A.); (J.R.C.); (L.F.H.); (S.M.W.); (M.F.P.); (J.K.N.)
| | - Lillian F. Hyde
- The Jackson Laboratory, 600 Main Street, Bar Harbor, ME 04609, USA; (G.B.C.); (L.S.); (N.A.); (J.R.C.); (L.F.H.); (S.M.W.); (M.F.P.); (J.K.N.)
| | - Sonia M. Weatherly
- The Jackson Laboratory, 600 Main Street, Bar Harbor, ME 04609, USA; (G.B.C.); (L.S.); (N.A.); (J.R.C.); (L.F.H.); (S.M.W.); (M.F.P.); (J.K.N.)
| | - Martin F. Pera
- The Jackson Laboratory, 600 Main Street, Bar Harbor, ME 04609, USA; (G.B.C.); (L.S.); (N.A.); (J.R.C.); (L.F.H.); (S.M.W.); (M.F.P.); (J.K.N.)
| | - Jürgen K. Naggert
- The Jackson Laboratory, 600 Main Street, Bar Harbor, ME 04609, USA; (G.B.C.); (L.S.); (N.A.); (J.R.C.); (L.F.H.); (S.M.W.); (M.F.P.); (J.K.N.)
| | - Neal S. Peachey
- Department of Ophthalmic Research, Cole Eye Institute, Cleveland Clinic Foundation, 9500 Euclid Avenue, Cleveland, OH 44195, USA; (M.Y.); (N.S.P.)
- Department of Ophthalmology, Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, 9500 Euclid Avenue, Cleveland, OH 44195, USA
- Research Service, Louis Stokes Cleveland VA Medical Center, 10701 East Boulevard, Cleveland, OH 44106, USA
| | - Patsy M. Nishina
- The Jackson Laboratory, 600 Main Street, Bar Harbor, ME 04609, USA; (G.B.C.); (L.S.); (N.A.); (J.R.C.); (L.F.H.); (S.M.W.); (M.F.P.); (J.K.N.)
| | - Mark P. Krebs
- The Jackson Laboratory, 600 Main Street, Bar Harbor, ME 04609, USA; (G.B.C.); (L.S.); (N.A.); (J.R.C.); (L.F.H.); (S.M.W.); (M.F.P.); (J.K.N.)
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Puertas-Neyra K, Galindo-Cabello N, Hernández-Rodríguez LA, González-Pérez F, Rodríguez-Cabello JC, González-Sarmiento R, Pastor JC, Usategui-Martín R, Fernandez-Bueno I. Programmed Cell Death and Autophagy in an in vitro Model of Spontaneous Neuroretinal Degeneration. Front Neuroanat 2022; 16:812487. [PMID: 35221932 PMCID: PMC8873173 DOI: 10.3389/fnana.2022.812487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Accepted: 01/18/2022] [Indexed: 11/15/2022] Open
Abstract
Retinal neurodegenerative diseases are the leading causes of visual impairment and irreversible blindness worldwide. Although the retinal response to injury remains closely similar between different retinal neurodegenerative diseases, available therapeutic alternatives are only palliative, too expensive, or very specific, such as gene therapy. In that sense, the development of broad-spectrum neuroprotective therapies seems to be an excellent option. In this regard, it is essential to identify molecular targets involved in retinal degeneration, such as cell death mechanisms. Apoptosis has been considered as the primary cell death mechanism during retinal degeneration; however, recent studies have demonstrated that the only use of anti-apoptotic drugs is not enough to confer good neuroprotection in terms of cell viability and preservation. For that reason, the interrelationship that exists between apoptosis and other cell death mechanisms needs to be characterized deeply to design future therapeutic options that simultaneously block the main cell death pathways. In that sense, the study aimed to characterize the programmed cell death (in terms of apoptosis and necroptosis) and autophagy response and modulation in retinal neurodegenerative diseases, using an in vitro model of spontaneous retinal neurodegeneration. For that purpose, we measured the mRNA relative expression through qPCR of a selected pool of genes involved in apoptosis (BAX, BCL2, CASP3, CASP8, and CASP9), necroptosis (MLKL, RIPK1, and RIPK3), and autophagy (ATG7, BCLIN1, LC3B, mTOR, and SQSTM1); besides, the immunoexpression of their encoding proteins (Casp3, MLKL, RIPK1, LC3B, and p62) were analyzed using immunohistochemistry. Our results showed an increase of pro-apoptotic and pro-necroptotic related genes and proteins during in vitro retinal neurodegeneration. Besides, we describe for the first time the modulation between programmed cell death mechanisms and autophagy in an in vitro retinal neurodegeneration model. This study reinforces the idea that cell death mechanisms are closely interconnected and provides new information about molecular signaling and autophagy along the retinal degeneration process.
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Affiliation(s)
- Kevin Puertas-Neyra
- Retina Group, Instituto Universitario de Oftalmobiología Aplicada (IOBA), Universidad de Valladolid, Valladolid, Spain
| | - Nadia Galindo-Cabello
- Retina Group, Instituto Universitario de Oftalmobiología Aplicada (IOBA), Universidad de Valladolid, Valladolid, Spain
- Postgraduate Unit, Faculty of Biological Sciences, National University of San Marcos, Lima, Peru
| | | | - Fernando González-Pérez
- Group for Advanced Materials and Nanobiotechnology (GIR BIOFORGE), CIBER-BBN, Edificio LUCIA, Universidad de Valladolid, Valladolid, Spain
| | - José Carlos Rodríguez-Cabello
- Group for Advanced Materials and Nanobiotechnology (GIR BIOFORGE), CIBER-BBN, Edificio LUCIA, Universidad de Valladolid, Valladolid, Spain
- Centro en Red de Medicina Regenerativa y Terapia Celular de Castilla y León, Valladolid, Spain
| | - Rogelio González-Sarmiento
- Molecular Medicine Unit, Department of Medicine, University of Salamanca, Salamanca, Spain
- Institute of Biomedical Research of Salamanca (IBSAL), Salamanca, Spain
- Institute of Molecular and Cellular Biology of Cancer (IBMCC), University of Salamanca-CSIC, Salamanca, Spain
| | - José Carlos Pastor
- Retina Group, Instituto Universitario de Oftalmobiología Aplicada (IOBA), Universidad de Valladolid, Valladolid, Spain
- Centro en Red de Medicina Regenerativa y Terapia Celular de Castilla y León, Valladolid, Spain
- Red Temática de Investigación Cooperativa en Salud (RETICS), Oftared, Instituto de Salud Carlos III, Valladolid, Spain
- RetiBrain (RED2018-102499-T), Ministerio de Ciencia, Innovación y Universidades, Valladolid, Spain
| | - Ricardo Usategui-Martín
- Retina Group, Instituto Universitario de Oftalmobiología Aplicada (IOBA), Universidad de Valladolid, Valladolid, Spain
- Centro en Red de Medicina Regenerativa y Terapia Celular de Castilla y León, Valladolid, Spain
- Red Temática de Investigación Cooperativa en Salud (RETICS), Oftared, Instituto de Salud Carlos III, Valladolid, Spain
- RetiBrain (RED2018-102499-T), Ministerio de Ciencia, Innovación y Universidades, Valladolid, Spain
- Ricardo Usategui-Martín,
| | - Ivan Fernandez-Bueno
- Retina Group, Instituto Universitario de Oftalmobiología Aplicada (IOBA), Universidad de Valladolid, Valladolid, Spain
- Centro en Red de Medicina Regenerativa y Terapia Celular de Castilla y León, Valladolid, Spain
- Red Temática de Investigación Cooperativa en Salud (RETICS), Oftared, Instituto de Salud Carlos III, Valladolid, Spain
- RetiBrain (RED2018-102499-T), Ministerio de Ciencia, Innovación y Universidades, Valladolid, Spain
- *Correspondence: Ivan Fernandez-Bueno,
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Advances in Ophthalmic Optogenetics: Approaches and Applications. Biomolecules 2022; 12:biom12020269. [PMID: 35204770 PMCID: PMC8961521 DOI: 10.3390/biom12020269] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Revised: 02/03/2022] [Accepted: 02/05/2022] [Indexed: 02/04/2023] Open
Abstract
Recent advances in optogenetics hold promise for vision restoration in degenerative eye diseases. Optogenetics refers to techniques that use light to control the cellular activity of targeted cells. Although optogenetics is a relatively new technology, multiple therapeutic options are already being explored in pre-clinical and phase I/II clinical trials with the aim of developing novel, safe, and effective treatments for major blinding eye diseases, such as glaucoma and retinitis pigmentosa. Optogenetic approaches to visual restoration are primarily aimed at replacing lost or dysfunctional photoreceptors by inserting light-sensitive proteins into downstream retinal neurons that have no intrinsic light sensitivity. Such approaches are attractive because they are agnostic to the genetic causes of retinal degeneration, which raises hopes that all forms of retinal dystrophic and degenerative diseases could become treatable. Optogenetic strategies can also have a far-reaching impact on translational research by serving as important tools to study the pathogenesis of retinal degeneration and to identify clinically relevant therapeutic targets. For example, the CRY-CIBN optogenetic system has been recently applied to animal models of glaucoma, suggesting a potential role of OCRL in the regulation of intraocular pressure in trabecular meshwork. As optogenetic strategies are being intensely investigated, it appears crucial to consider the opportunities and challenges such therapies may offer. Here, we review the more recent promising optogenetic molecules, vectors, and applications of optogenetics for the treatment of retinal degeneration and glaucoma. We also summarize the preliminary results of ongoing clinical trials for visual restoration.
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Zacks DN, Kocab AJ, Choi JJ, Gregory-Ksander MS, Cano M, Handa JT. Cell Death in AMD: The Rationale for Targeting Fas. J Clin Med 2022; 11:jcm11030592. [PMID: 35160044 PMCID: PMC8836408 DOI: 10.3390/jcm11030592] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 01/18/2022] [Accepted: 01/21/2022] [Indexed: 11/21/2022] Open
Abstract
Age-related macular degeneration (AMD) is a leading cause of irreversible blindness in the developed world. While great advances have been made in the treatment of the neovascular (“wet”) form of the disease, there is still a significant need for therapies that prevent the vision loss associated with the advanced forms of dry, atrophic AMD. In this atrophic form, retinal pigment epithelial (RPE) and photoreceptor cell death is the ultimate cause of vision loss. In this review, we summarize the cell death pathways and their relation to RPE and retinal cell death in AMD. We review the data that support targeting programmed cell death through inhibition of the Fas receptor as a novel approach to preserve these structures and that this effect results from inhibiting both canonical death pathway activation and reducing the associated inflammatory response. These data lay the groundwork for current clinical strategies targeting the Fas pathway in this devastating disease.
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Affiliation(s)
- David N. Zacks
- Department of Ophthalmology and Visual Sciences, Kellogg Eye Center, University of Michigan, Ann Arbor, MI 48105, USA;
- Correspondence: ; Tel.: +1-734-936-0871
| | | | - Joanne J. Choi
- Department of Ophthalmology and Visual Sciences, Kellogg Eye Center, University of Michigan, Ann Arbor, MI 48105, USA;
| | - Meredith S. Gregory-Ksander
- Department of Ophthalmology, Schepens Eye Research Institute, Massachusetts Eye and Ear, Harvard Medical School, Boston, MA 02114, USA;
| | - Marisol Cano
- Wilmer Eye Institute, Johns Hopkins University, Baltimore, MD 21287, USA; (M.C.); (J.T.H.)
| | - James T. Handa
- Wilmer Eye Institute, Johns Hopkins University, Baltimore, MD 21287, USA; (M.C.); (J.T.H.)
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Rasool S, Kaushik M, Chaudhary R, Blachford K, Berry M, Scott RAH, Logan A, Blanch RJ. Visual deterioration in patients with photoreceptor loss after retinal reattachment surgery. Graefes Arch Clin Exp Ophthalmol 2022; 260:2141-2147. [PMID: 35080648 PMCID: PMC9203401 DOI: 10.1007/s00417-021-05519-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 10/19/2021] [Accepted: 12/07/2021] [Indexed: 01/15/2023] Open
Abstract
PURPOSE Assess the relationship between photoreceptor degeneration and visual function after retinal reattachment surgery (RRS) in a prospective cohort. METHODS Patients with rhegmatogenous retinal detachment (RRD) were reviewed before and 6 months after vitreoretinal surgery. Optical coherence tomographical thickness of the outer nuclear layer (ONL), outer retinal segment (ORS), retinal pigmented epithelium to ellipsoid zone (RPE-EZ) and external limiting membrane to EZ (ELM-EZ) were recorded 6 months post-operatively. These were compared to best corrected visual acuity (BCVA) and retinal sensitivity (Humphrey visual field). RESULTS Thirteen macula-off and 8 macula-on RRD patients were included. The mean ONL thickness was higher after macula-on RRD compared to macula-off RRD (97.70 ± 3.62 μm vs. 73.10 ± 4.98 μm). In all RRD eyes, every 1 μm decrease in ONL thickness correlated with a 0.052 dB decrease and in retinal sensitivity and every 1 μm decrease in ORS thickness was associated with a 0.062 dB reduction in retinal sensitivity. ORS, ELM-EZ and RPE-EZ thickness did not correlate with BCVA post-RRS. CONCLUSION There was greater ONL and ORS thinning following macula-off compared to macula-on RRD. Correlations between ONL and ORS thinning with decreased retinal sensitivity may be explained by RRD-induced photoreceptor death.
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Affiliation(s)
- Sana Rasool
- Sandwell & West Birmingham NHS Trust, Birmingham, UK
| | - Megha Kaushik
- Department of Ophthalmology, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
| | - Rishika Chaudhary
- Department of Ophthalmology, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK ,Neuroscience & Ophthalmology, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK ,National Institute of Health Research Surgical Reconstruction and Microbiology Centre, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
| | | | | | - Robert A. H. Scott
- Neuroscience & Ophthalmology, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK
| | - Ann Logan
- Axolotl Consulting Ltd, Droitwich, WR9 0JS Worcestershire UK ,Division of Biomedical Sciences, Warwick Medical School, University of Warwick, CV4 7HL Coventry, UK
| | - Richard J. Blanch
- Department of Ophthalmology, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK ,Neuroscience & Ophthalmology, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK ,National Institute of Health Research Surgical Reconstruction and Microbiology Centre, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK ,Academic Department of Military Surgery & Trauma, Royal Centre for Defence Medicine, Birmingham, UK
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Loss of αA or αB-Crystallin Accelerates Photoreceptor Cell Death in a Mouse Model of P23H Autosomal Dominant Retinitis Pigmentosa. Int J Mol Sci 2021; 23:ijms23010070. [PMID: 35008496 PMCID: PMC8744961 DOI: 10.3390/ijms23010070] [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: 11/30/2021] [Revised: 12/17/2021] [Accepted: 12/20/2021] [Indexed: 02/08/2023] Open
Abstract
Inherited retinal degenerations (IRD) are a leading cause of visual impairment and can result from mutations in any one of a multitude of genes. Mutations in the light-sensing protein rhodopsin (RHO) is a leading cause of IRD with the most common of those being a missense mutation that results in substitution of proline-23 with histidine. This variant, also known as P23H-RHO, results in rhodopsin misfolding, initiation of endoplasmic reticulum stress, the unfolded protein response, and activation of cell death pathways. In this study, we investigate the effect of α-crystallins on photoreceptor survival in a mouse model of IRD secondary to P23H-RHO. We find that knockout of either αA- or αB-crystallin results in increased intraretinal inflammation, activation of apoptosis and necroptosis, and photoreceptor death. Our data suggest an important role for the ⍺-crystallins in regulating photoreceptor survival in the P23H-RHO mouse model of IRD.
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Zhang J, Gao F, Ma Y, Xue T, Shen Y. Identification of early-onset photoreceptor degeneration in transgenic mouse models of Alzheimer's disease. iScience 2021; 24:103327. [PMID: 34805789 PMCID: PMC8581578 DOI: 10.1016/j.isci.2021.103327] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 09/23/2021] [Accepted: 10/19/2021] [Indexed: 12/20/2022] Open
Abstract
Light sensitivity of the vertebrate retina relies on the integrity of photoreceptors, including rods and cones. Research in patients with Alzheimer's disease (AD) and in AD transgenic mice reports that accumulated amyloid-β (Aβ) plaques in the retina are toxic to retinal neurons. Moreover, Aβ plaques are deposited around the rods and cones, yet photoreceptor anomalies remain unclear in AD. Here, we identify the progressive degeneration of rods and cones characterized by impaired expression of phototransduction proteins, morphological alterations, functional deficits, and even cell loss. Furthermore, we demonstrate that cell senescence and necroptosis were involved in rod degeneration. Importantly, using in vivo scotopic electroretinogram, we detected rod degeneration in early-stage AD transgenic mice before Aβ plaques were observed in the brain. Moreover, we demonstrate that rod degeneration was among the earliest AD retinal manifestations compared with other types of retinal neurons. Overall, our study is the first to identify and detect in vivo, early-onset photoreceptor degeneration in AD. Progressive rod degeneration has been identified in AD transgenic mice Cell senescence and necroptosis were involved in rod degeneration Rod degeneration can be detected by in vivo scotopic electroretinogram Rod degeneration has earlier onset than amyloid-β plaques in the brain
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Affiliation(s)
- Jie Zhang
- Institute on Aging and Brain Disorders, The First Affiliated Hospital of USTC, Hefei National Laboratory for Physical Sciences at the Microscale, School of Life Science, Division of Life Science and Medicine, University of Science and Technology of China, Hefei 230026, China
- Neurodegenerative Disorder Research Center, CAS Key Laboratory of Brain Function and Disease, University of Science and Technology of China, Hefei 230026, China
| | - Feng Gao
- Institute on Aging and Brain Disorders, The First Affiliated Hospital of USTC, Hefei National Laboratory for Physical Sciences at the Microscale, School of Life Science, Division of Life Science and Medicine, University of Science and Technology of China, Hefei 230026, China
- Neurodegenerative Disorder Research Center, CAS Key Laboratory of Brain Function and Disease, University of Science and Technology of China, Hefei 230026, China
| | - Yuqian Ma
- Neurodegenerative Disorder Research Center, CAS Key Laboratory of Brain Function and Disease, University of Science and Technology of China, Hefei 230026, China
- Eye Center at The First Affiliated Hospital of USTC, Division of Life Science and Medicine, University of Science and Technology of China, Hefei 230026, China
| | - Tian Xue
- Institute on Aging and Brain Disorders, The First Affiliated Hospital of USTC, Hefei National Laboratory for Physical Sciences at the Microscale, School of Life Science, Division of Life Science and Medicine, University of Science and Technology of China, Hefei 230026, China
- Neurodegenerative Disorder Research Center, CAS Key Laboratory of Brain Function and Disease, University of Science and Technology of China, Hefei 230026, China
- Eye Center at The First Affiliated Hospital of USTC, Division of Life Science and Medicine, University of Science and Technology of China, Hefei 230026, China
- Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai 200031, China
| | - Yong Shen
- Institute on Aging and Brain Disorders, The First Affiliated Hospital of USTC, Hefei National Laboratory for Physical Sciences at the Microscale, School of Life Science, Division of Life Science and Medicine, University of Science and Technology of China, Hefei 230026, China
- Neurodegenerative Disorder Research Center, CAS Key Laboratory of Brain Function and Disease, University of Science and Technology of China, Hefei 230026, China
- Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai 200031, China
- Corresponding author
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Ortega JT, Jastrzebska B. Neuroinflammation as a Therapeutic Target in Retinitis Pigmentosa and Quercetin as Its Potential Modulator. Pharmaceutics 2021; 13:pharmaceutics13111935. [PMID: 34834350 PMCID: PMC8623264 DOI: 10.3390/pharmaceutics13111935] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 11/09/2021] [Accepted: 11/12/2021] [Indexed: 12/25/2022] Open
Abstract
The retina is a multilayer neuronal tissue located in the back of the eye that transduces the environmental light into a neural impulse. Many eye diseases caused by endogenous or exogenous harm lead to retina degeneration with neuroinflammation being a major hallmark of these pathologies. One of the most prevalent retinopathies is retinitis pigmentosa (RP), a clinically and genetically heterogeneous hereditary disorder that causes a decline in vision and eventually blindness. Most RP cases are related to mutations in the rod visual receptor, rhodopsin. The mutant protein triggers inflammatory reactions resulting in the activation of microglia to clear degenerating photoreceptor cells. However, sustained insult caused by the abnormal genetic background exacerbates the inflammatory response and increases oxidative stress in the retina, leading to a decline in rod photoreceptors followed by cone photoreceptors. Thus, inhibition of inflammation in RP has received attention and has been explored as a potential therapeutic strategy. However, pharmacological modulation of the retinal inflammatory response in combination with rhodopsin small molecule chaperones would likely be a more advantageous therapeutic approach to combat RP. Flavonoids, which exhibit antioxidant and anti-inflammatory properties, and modulate the stability and folding of rod opsin, could be a valid option in developing treatment strategies against RP.
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