1
|
Chen Y, Zhao T, Han M, Chen Y. Gigantol protects retinal pigment epithelial cells against high glucose-induced apoptosis, oxidative stress and inflammation by inhibiting MTDH-mediated NF-kB signaling pathway. Immunopharmacol Immunotoxicol 2024; 46:33-39. [PMID: 37681978 DOI: 10.1080/08923973.2023.2247545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Accepted: 08/08/2023] [Indexed: 09/09/2023]
Abstract
OBJECTIVE As a frequent complication of diabetes mellitus (DM), diabetic retinopathy (DR) is now one of the major causes of blindness. Recent reports have shown that retinal pigment epithelial cell (RPEC) damage plays an essential part in DR development and progression. This work intended to explore the potential effects of Gigantol on high glucose (HG)-stimulated RPEC damage and identify potential mechanisms. METHODS Cell viability, cell damage, and cell apoptosis were evaluated by CCK-8, lactate dehydrogenase (LDH) and flow cytometry assays. The levels of oxidative stress biomarkers and pro-inflammatory cytokines were assessed using corresponding commercial kits and ELISA. Additionally, the levels of MTDH and NF-kB signaling pathway-related proteins were detected by western blotting. RESULTS Gigantol dose-dependently enhanced cell viability and decreased apoptosis in HG-challenged ARPE-19 cells. Also, Gigantol notably relieved oxidative stress and inflammatory responses in ARPE-19 cells under HG conditions. Gigantol dose-dependently suppressed MTDH expression. In addition, MTDH restoration partially counteracted the protective effects of Gigantol on ARPE-19 cells subject to HG treatment. Mechanically, Gigantol inactivated the NF-kB signaling pathway, which was partly restored after MTDH overexpression. CONCLUSION Our findings suggested that Gigantol protected against HG-induced RPEC damage by inactivating the NF-kB signaling via MTDH inhibition, offering a potent therapeutic drug for DR treatment.
Collapse
Affiliation(s)
- You Chen
- Department of Ophthalmology, China-Japan Friendship Hospital, Beijing, China
| | - Tong Zhao
- Department of Ophthalmology, China-Japan Friendship Hospital, Beijing, China
| | - Mengyu Han
- Department of Ophthalmology, China-Japan Friendship Hospital, Beijing, China
| | - Yi Chen
- Department of Ophthalmology, China-Japan Friendship Hospital, Beijing, China
| |
Collapse
|
2
|
Shiraya T, Araki F, Nakagawa S, Ueta T, Totsuka K, Abe H, Naito Y, Toyama T, Sugimoto K, Kato S. Differential gene expression analysis using RNA sequencing: retinal pigment epithelial cells after exposure to continuous-wave and subthreshold micropulse laser. Jpn J Ophthalmol 2022. [PMID: 35639223 DOI: 10.1007/s10384-022-00925-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Accepted: 04/21/2022] [Indexed: 10/18/2022]
Abstract
PURPOSE Subthreshold micropulse laser (SMPL) is more clinically efficient for the treatment of diabetic macular edema (DME) than the conventional continuous-wave (CW) laser. We aimed to characterize transcriptome changes after the application of these lasers and to compare the transcripts. METHODS Human pluripotent stem cell-derived retinal pigment epithelial cells were exposed to laser irradiation. Differentially expressed genes (DEGs), distribution of heat shock protein (Hsp) family, gene expression profile, and gene ontology (GO) enrichment analysis based on RNA sequencing data were investigated at 3 h and 24 h after irradiation. RESULTS CW laser induced more DEGs than SMPL (1771 vs. 520 genes). The expression of the Hsp family was confirmed in both groups: however, the induction patterns was different for different genes. GO enrichment analysis revealed that CW laser upregulated the expression of DEGs involved in vasculature development (GO: 0001944), related to apoptosis and repair after cell injury whereas SMPL upregulated the expression of DEGs involved in photoreceptor cell maintenance (GO: 0045494), photoreceptor cell development (GO: 0042461), and sensory perception of light stimuli (GO: 0050953). CONCLUSIONS The results provide insights into the genetic responses and may contribute to the understanding of the molecular mechanisms of laser-induced thermal effects.
Collapse
|
3
|
Li J, Liu X, Yang Q, Huang J, Zhou W, Tan Z, Li Z, Zhou D. The effect of docetaxel on retinal pigment epithelial cells. Toxicol Rep 2022; 9:670-678. [PMID: 35433274 PMCID: PMC9010520 DOI: 10.1016/j.toxrep.2022.03.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 03/10/2022] [Accepted: 03/17/2022] [Indexed: 10/26/2022] Open
|
4
|
Kim U, Kwon M, Jung G, Kim Y, Lee Y, Im S, Cense B, Lee H, Ohm WS, Joo C. Optical dosimeter for selective retinal therapy based on multi-port fiber-optic interferometry. Biomed Opt Express 2021; 12:4920-4933. [PMID: 34513233 PMCID: PMC8407823 DOI: 10.1364/boe.434812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 07/07/2021] [Indexed: 06/13/2023]
Abstract
Selective retinal therapy (SRT) employs a micro-second short-pulse lasers to induce localized destruction of the targeted retinal structures with a pulse duration and power aimed at minimal damage to other healthy retinal cells. SRT has demonstrated a great promise in the treatment of retinal diseases, but pulse energy thresholds for effective SRT procedures should be determined precisely and in real time, as the thresholds could vary with disease status and patients. In this study, we present the use of a multi-port fiber-based interferometer (MFI) for highly sensitive real-time SRT monitoring. We exploit distinct phase differences among the fiber ports in the MFI to quantitatively measure localized fluctuations of complex-valued information during the SRT procedure. We evaluate several metrics that can be computed from the full complex-valued information and demonstrate that the complex contour integration is highly sensitive and most correlative to pulse energies, acoustic outputs, and cell deaths. The validity of our method was demonstrated on excised porcine retinas, with a sensitivity and specificity of 0.92 and 0.88, respectively, as compared with the results from a cell viability assay.
Collapse
Affiliation(s)
- Uihan Kim
- Department of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
- These authors contributed equally to this work
| | - Minsung Kwon
- Department of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
- These authors contributed equally to this work
| | - Gyeongyeon Jung
- Department of Research, Lutronic Corporation, 219 Sowon-ro, Goyang, 10534, Republic of Korea
| | - Youngnam Kim
- Department of Research, Lutronic Corporation, 219 Sowon-ro, Goyang, 10534, Republic of Korea
| | - Yunam Lee
- Department of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Seonghun Im
- Department of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Barry Cense
- Department of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
- Optical and Biomedical Engineering Laboratory, Department of Electrical, Electronic & Computer Engineering, The University of Western Australia, Perth, WA 6009, Australia
| | - Hyungsuk Lee
- Department of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Won-Suk Ohm
- Department of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Chulmin Joo
- Department of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| |
Collapse
|
5
|
Choudhury R, Bayatti N, Scharff R, Szula E, Tilakaratna V, Udsen MS, McHarg S, Askari JA, Humphries MJ, Bishop PN, Clark SJ. FHL-1 interacts with human RPE cells through the α5β1 integrin and confers protection against oxidative stress. Sci Rep 2021; 11:14175. [PMID: 34239032 PMCID: PMC8266909 DOI: 10.1038/s41598-021-93708-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Accepted: 06/16/2021] [Indexed: 12/16/2022] Open
Abstract
Retinal pigment epithelial (RPE) cells that underlie the neurosensory retina are essential for the maintenance of photoreceptor cells and hence vision. Interactions between the RPE and their basement membrane, i.e. the inner layer of Bruch's membrane, are essential for RPE cell health and function, but the signals induced by Bruch's membrane engagement, and their contributions to RPE cell fate determination remain poorly defined. Here, we studied the functional role of the soluble complement regulator and component of Bruch's membrane, Factor H-like protein 1 (FHL-1). Human primary RPE cells adhered to FHL-1 in a manner that was eliminated by either mutagenesis of the integrin-binding RGD motif in FHL-1 or by using competing antibodies directed against the α5 and β1 integrin subunits. These short-term experiments reveal an immediate protein-integrin interaction that were obtained from primary RPE cells and replicated using the hTERT-RPE1 cell line. Separate, longer term experiments utilising RNAseq analysis of hTERT-RPE1 cells bound to FHL-1, showed an increased expression of the heat-shock protein genes HSPA6, CRYAB, HSPA1A and HSPA1B when compared to cells bound to fibronectin (FN) or laminin (LA). Pathway analysis implicated changes in EIF2 signalling, the unfolded protein response, and mineralocorticoid receptor signalling as putative pathways. Subsequent cell survival assays using H2O2 to induce oxidative stress-induced cell death suggest hTERT-RPE1 cells had significantly greater protection when bound to FHL-1 or LA compared to plastic or FN. These data show a non-canonical role of FHL-1 in protecting RPE cells against oxidative stress and identifies a novel interaction that has implications for ocular diseases such as age-related macular degeneration.
Collapse
Affiliation(s)
- Rawshan Choudhury
- Division of Evolution and Genomic Sciences, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Oxford, UK
| | - Nadhim Bayatti
- Division of Evolution and Genomic Sciences, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Oxford, UK
| | - Richard Scharff
- Division of Evolution and Genomic Sciences, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Oxford, UK
| | - Ewa Szula
- Division of Evolution and Genomic Sciences, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Oxford, UK
| | - Viranga Tilakaratna
- Division of Evolution and Genomic Sciences, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Oxford, UK
| | - Maja Søberg Udsen
- Panum Institute, Department of Immunology and Microbiology, University of Copenhagen, Copenhagen, Denmark
| | - Selina McHarg
- Division of Evolution and Genomic Sciences, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Oxford, UK
| | - Janet A Askari
- Wellcome Centre for Cell-Matrix Research, Division of Cell Matrix Biology & Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, Manchester Academic Health Sciences Centre, University of Manchester, Oxford, UK
| | - Martin J Humphries
- Wellcome Centre for Cell-Matrix Research, Division of Cell Matrix Biology & Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, Manchester Academic Health Sciences Centre, University of Manchester, Oxford, UK
| | - Paul N Bishop
- Division of Evolution and Genomic Sciences, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Oxford, UK
- Manchester Royal Eye Hospital, Manchester University NHS Foundation Trust, Manchester Academic Health Sciences Centre, Manchester, UK
| | - Simon J Clark
- Division of Evolution and Genomic Sciences, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Oxford, UK.
- Lydia Becker Institute of Immunology and Inflammation, Faculty of Biology, Medicine and Health, University of Manchester, Oxford, UK.
- Institute for Ophthalmic Research, Eberhard Karls University of Tübingen, Elfriede-Aulhorn-Straße 7, 72076, Tübingen, Germany.
- University Eye Clinic, Department for Ophthalmology, University of Tübingen, Tübingen, Germany.
| |
Collapse
|
6
|
Wood JPM, Tahmasebi M, Casson RJ, Plunkett M, Chidlow G. Physiological response of the retinal pigmented epithelium to 3-ns pulse laser application, in vitro and in vivo. Clin Exp Ophthalmol 2021; 49:454-469. [PMID: 33904222 DOI: 10.1111/ceo.13931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 03/30/2021] [Accepted: 04/17/2021] [Indexed: 11/26/2022]
Abstract
BACKGROUND To treat healthy retinal pigmented epithelium (RPE) with the 3-ns retinal rejuvenation therapy (2RT) laser and to investigate the subsequent wound-healing response of these cells. METHODS Primary rat RPE cells were treated with the 2RT laser at a range of energy settings. Treated cells were fixed up to 7 days post-irradiation and assessed for expression of proteins associated with wound-healing. For in vivo treatments, eyes of Dark Agouti rats were exposed to laser and tissues collected up to 7 days post-irradiation. Isolated wholemount RPE preparations were examined for structural and protein expression changes. RESULTS Cultured RPE cells were ablated by 2RT laser in an energy-dependent manner. In all cases, the RPE cell layer repopulated completely within 7 days. Replenishment of RPE cells was associated with expression of the heat shock protein, Hsp27, the intermediate filament proteins, vimentin and nestin, and the cell cycle-associated protein, cyclin D1. Cellular tight junctions were lost in lased regions but re-expressed when cell replenishment was complete. In vivo, 2RT treatment gave rise to both an energy-dependent localised denudation of the RPE and the subsequent repopulation of lesion sites. Cell replenishment was associated with the increased expression of cyclin D1, vimentin and the heat shock proteins Hsp27 and αB-crystallin. CONCLUSIONS The 2RT laser was able to target the RPE both in vitro and in vivo, causing debridement of the cells and the consequent stimulation of a wound-healing response leading to layer reformation.
Collapse
Affiliation(s)
- John P M Wood
- Central Adelaide Local Health Network, Adelaide, South Australia, Australia.,Discipline of Ophthalmology and Visual Sciences, University of Adelaide, Adelaide, South Australia, Australia
| | - Marzieh Tahmasebi
- Central Adelaide Local Health Network, Adelaide, South Australia, Australia.,Discipline of Ophthalmology and Visual Sciences, University of Adelaide, Adelaide, South Australia, Australia
| | - Robert J Casson
- Central Adelaide Local Health Network, Adelaide, South Australia, Australia.,Discipline of Ophthalmology and Visual Sciences, University of Adelaide, Adelaide, South Australia, Australia
| | - Malcolm Plunkett
- Discipline of Ophthalmology and Visual Sciences, University of Adelaide, Adelaide, South Australia, Australia
| | - Glyn Chidlow
- Central Adelaide Local Health Network, Adelaide, South Australia, Australia.,Discipline of Ophthalmology and Visual Sciences, University of Adelaide, Adelaide, South Australia, Australia
| |
Collapse
|
7
|
Madrakhimov SB, Yang JY, Park HY, Park TK. Essential Role of mTOR Signaling in Human Retinal Pigment Epithelial Cell Regeneration After Laser Photocoagulation. Lasers Med Sci 2019; 34:1019-29. [PMID: 30499005 DOI: 10.1007/s10103-018-2692-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Accepted: 11/19/2018] [Indexed: 12/13/2022]
Abstract
This study assessed the role of mechanistic target of rapamycin (mTOR) pathway in the human adult retinal pigment epithelial (ARPE) cell response after laser photocoagulation (LP). The effect of mTOR inhibition on ARPE-19 cell was investigated by rapamycin treatment after LP. Cell viability and proliferation were explored using MTT and EdU assays, respectively. The expression of mTOR-related proteins and epithelial-mesenchymal transition (EMT) markers was verified by Western blot. Rapamycin retarded the LP area recovery in a dose-dependent manner by the 120 h, while LP+DMSO vehicle-treated cells completely restored the lesion zone (P ≤ 0.01). ARPE-19 cell viability is significantly lower in LP + rapamycin 80 and 160 ng/ml treated cultures compared to LP control at 120 h (P ≤ 0.001). LP control group demonstrated significantly more proliferative cells compared to untreated cells at the 72 and 120 h, whereas EdU-positive cell numbers in cultures treated with rapamycin at concentrations of 80 and 160 ng/ml were similar to baseline values (P ≤ 0.01). mTOR pathway activation is essential for regulation of the RPE cell migration and proliferation after LP. mTOR inhibition with rapamycin effectively blocks the migration and proliferation of the RPE cells. Our results demonstrate that mTOR has an important role in ARPE-19 cell as a regulator of cell behavior under stress conditions, suggesting that mTOR could be a promising therapeutic target for numerous retinal diseases.
Collapse
|
8
|
Jang SY, Cho IH, Yang JY, Park HY, Woo SE, Madrakhimov SB, Chang HS, Lyu J, Park TK. The retinal pigment epithelial response after retinal laser photocoagulation in diabetic mice. Lasers Med Sci 2019; 34:179-90. [DOI: 10.1007/s10103-018-2680-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Accepted: 10/31/2018] [Indexed: 12/21/2022]
|
9
|
Cho IH, Park SJ, Lee SH, Nah SK, Park HY, Yang JY, Madrakhimov SB, Lyu J, Park TK. The role of Wnt/β-catenin signaling in the restoration of induced pluripotent stem cell-derived retinal pigment epithelium after laser photocoagulation. Lasers Med Sci 2018; 34:571-581. [PMID: 30244402 DOI: 10.1007/s10103-018-2631-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Accepted: 08/28/2018] [Indexed: 10/28/2022]
Abstract
To investigate the role of Wnt/β-catenin signaling pathway in the restoration of induced pluripotent stem cell-derived retinal pigment epithelium (hiPSC-RPE) after laser photocoagulation. After differentiation of RPE cells from hiPSCs, laser photocoagulation was performed. Activation of Wnt/β-catenin signaling at days 1 and 5 after laser photocoagulation was evaluated by expression of β-catenin. Cell proliferation and alteration in cell-to-cell contact at day 5 after laser photocoagulation with or without Dickkopf-1 (Dkk-1) treatment were studied using ethynyl-2'-deoxyuridine (EdU) assay and zonula occludens-1 (ZO-1) expression analysis, respectively. The mRNA levels of Wnt genes at day 5 after laser photocoagulation were evaluated by quantitative real-time polymerase chain reaction (qRT-PCR). Activation of Wnt/β-catenin signaling at days 1 and 5 after laser photocoagulation was confirmed by β-catenin accumulation in the cytoplasm and nucleus of hiPSC-RPE. Many EdU-positive cells also expressed β-catenin, and the number of EdU-positive cells was decreased at day 5 after laser photocoagulation after Dkk-1 treatment, indicating that Wnt/β-catenin signaling mediated hiPSC-RPE proliferation. ZO-1 expression was not decreased with Dkk-1 treatment at day 5 after laser photocoagulation, indicating that Wnt/β-catenin signaling mediated hiPSC-RPE restoration. At day 5, after laser photocoagulation, mRNA levels of Wnt2b, Wnt3, Wnt5a, Wnt7a, and Wnt10b were increased. Wnt/β-catenin signaling has a crucial role in restoration of hiPSC-RPE proliferation after laser photocoagulation. Manipulation of Wnt/β-catenin signaling while elucidating the underlying mechanisms of RPE restoration might have a therapeutic potential in retinal degenerative diseases.
Collapse
Affiliation(s)
- In Hwan Cho
- Department of Ophthalmology, Soonchunhyang University Hospital Cheonan, Cheonan, Republic of Korea
| | - Seong Jun Park
- College of Medicine, Soonchunhyang University, Cheonan, Republic of Korea
| | - Si Hyung Lee
- Department of Ophthalmology, Soonchunhyang University Hospital Bucheon, 170 Jomaru-ro, Wonmi-gu, Bucheon, 14584, Republic of Korea
| | - Seung Kwan Nah
- Department of Ophthalmology, Soonchunhyang University Hospital Bucheon, 170 Jomaru-ro, Wonmi-gu, Bucheon, 14584, Republic of Korea
| | - Ha Yan Park
- Department of Ophthalmology, Soonchunhyang University Hospital Bucheon, 170 Jomaru-ro, Wonmi-gu, Bucheon, 14584, Republic of Korea
| | - Jin Young Yang
- Department of Biomedical science, Graduate School, Soonchunhyang University, Bucheon, Republic of Korea
| | | | - Jungmook Lyu
- Department of Medical Science, Konyang University, 685 Gasoowon-dong, Seo-gu, Daejeon, 302-718, Republic of Korea.
| | - Tae Kwann Park
- College of Medicine, Soonchunhyang University, Cheonan, Republic of Korea. .,Department of Ophthalmology, Soonchunhyang University Hospital Bucheon, 170 Jomaru-ro, Wonmi-gu, Bucheon, 14584, Republic of Korea. .,Department of Biomedical science, Graduate School, Soonchunhyang University, Bucheon, Republic of Korea.
| |
Collapse
|
10
|
Zhang H, Xie X, Li J, Qin Y, Zhang W, Cheng Q, Yuan S, Liu Q, Paulus YM, Wang X, Yang X. Removal of choroidal vasculature using concurrently applied ultrasound bursts and nanosecond laser pulses. Sci Rep 2018; 8:12848. [PMID: 30150731 PMCID: PMC6110758 DOI: 10.1038/s41598-018-31045-w] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Accepted: 08/02/2018] [Indexed: 11/09/2022] Open
Abstract
Pathologic microvasculature plays a crucial role in innumerable diseases causing death and major organ impairment. A major clinical challenge is the development of selective therapies to remove these diseased microvessels without damaging surrounding tissue. This report describes our development of novel photo-mediated ultrasound therapy (PUT) technology for precisely removing choroidal blood vessels in the eye. PUT selectively removes microvessels by concurrently applying nanosecond laser pulses with ultrasound bursts. In PUT experiments on rabbit eyes in vivo, we applied 55-75 mJ/cm2 of light fluence at the retinochoroidal surface at 532-nm and 0.5 MPa of ultrasound pressure at 0.5 MHz. PUT resulted in significantly reduced blood perfusion in the choroidal layer which persisted to four weeks without causing collateral tissue damage, demonstrating that PUT is capable of removing choroidal microvasculature safely and effectively. With its unique advantages, PUT holds potential for the clinical management of eye diseases associated with microvessels and neovascularization.
Collapse
Affiliation(s)
- Haonan Zhang
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA.,Institute of Acoustics, School of Physics Science and Engineering, Tongji University, Shanghai, China
| | - Xinyi Xie
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA.,Department of Ophthalmology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, P.R. China
| | - Jia Li
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA.,Department of Ophthalmology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, P.R. China
| | - Yu Qin
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA.,Institute of Acoustics, School of Physics Science and Engineering, Tongji University, Shanghai, China
| | - Wei Zhang
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA
| | - Qian Cheng
- Institute of Acoustics, School of Physics Science and Engineering, Tongji University, Shanghai, China
| | - Songtao Yuan
- Department of Ophthalmology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, P.R. China
| | - Qinghuai Liu
- Department of Ophthalmology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, P.R. China
| | - Yannis M Paulus
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA. .,Department of Ophthalmology and Visual Sciences, University of Michigan, Ann Arbor, MI, USA.
| | - Xueding Wang
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA. .,Institute of Acoustics, School of Physics Science and Engineering, Tongji University, Shanghai, China.
| | - Xinmai Yang
- Institute for Bioengineering Research and Department of Mechanical Engineering, University of Kansas, Lawrence, KS, USA.
| |
Collapse
|
11
|
Han JW, Choi J, Kim YS, Kim J, Brinkmann R, Lyu J, Park TK. Comparison of the neuroinflammatory responses to selective retina therapy and continuous-wave laser photocoagulation in mouse eyes. Graefes Arch Clin Exp Ophthalmol 2018; 256:341-353. [PMID: 29322247 DOI: 10.1007/s00417-017-3883-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2017] [Revised: 11/02/2017] [Accepted: 12/20/2017] [Indexed: 01/12/2023] Open
Abstract
PURPOSE This study investigated microglia and inflammatory cell responses after selective retina therapy (SRT) with microsecond-pulsed laser in comparison to continuous-wave laser photocoagulation (cwPC). METHODS Healthy C57BL/6 J mice were treated with either a train of short pulses (SRT; 527-nm, Q-switched, 1.7-μs pulse) or a conventional thermal continuous-wave (532-nm, 100-ms pulse duration) laser. The mice were sacrificed and their eyes were enucleated 1, 3, 7, and 14 days after both laser treatments. Pattern of cell death on retinal section was evaluated by TUNEL assay, and the distribution of activated inflammatory cells and glial cells were observed under immunohistochemistry. Consecutive changes for the expression of cytokines such as IL-1β, TNF-α, and TGF-β were also examined using immunohistochemistry, and compared among each period after quantification by Western blotting. RESULTS The numbers of TUNEL-positive cells in the retinal pigment epithelium (RPE) layer did not differ in SRT and cwPC lesions, but TUNEL-positive cells in neural retinas were significantly less on SRT. Vague glial cell activation was observed in SRT-treated lesions. The population of inflammatory cells was also significantly decreased after SRT, and the cells were located in the RPE layer and subretinal space. Proinflammatory cytokines, including IL-1β and TNF-α, showed significantly lower levels after SRT; conversely, the level of TGF-β was similar to the cwPC-treated lesion. CONCLUSIONS SRT resulted in selective RPE damage without collateral thermal injury to the neural retina, and apparently produced negligible glial activation. In addition, SRT showed a markedly less inflammatory response than cwPC, which may have important therapeutic implications for several macular diseases.
Collapse
Affiliation(s)
- Jung Woo Han
- Department of Ophthalmology, College of Medicine, Soonchunhyang University, Bucheon, South Korea
| | - Juhye Choi
- Department of Medical Science, Konyang University, 158 Gwanjeodong-ro, Seo-gu, Daejeon, 320-832, Republic of Korea
| | - Young Shin Kim
- Department of Ophthalmology, College of Medicine, Soonchunhyang University, Bucheon, South Korea
| | - Jina Kim
- Department of Ophthalmology, College of Medicine, Soonchunhyang University, Bucheon, South Korea
| | - Ralf Brinkmann
- Institute of Biomedical Optics, University of Lübeck and Medizinisches Laserzentrum Lübeck GmbH, Lübeck, Germany
| | - Jungmook Lyu
- Department of Medical Science, Konyang University, 158 Gwanjeodong-ro, Seo-gu, Daejeon, 320-832, Republic of Korea.
| | - Tae Kwann Park
- Department of Ophthalmology, College of Medicine, Soonchunhyang University, Bucheon, South Korea. .,Laboratory for Translational Research on Retinal Macular Degeneration, College of Medicine, Soonchunhyang University, Bucheon, South Korea. .,Department of Ophthalmology, Soonchunhyang University College of Medicine, Soonchunhyang University Bucheon Hospital, #170 Jomaruro, Wonmi-gu, Bucheon-si, Gyeonggi-do, 420-767, South Korea.
| |
Collapse
|
12
|
Saxena S, Mishra N, Ruia S, Akduman L. In vivo early retinal structural alterations following laser photocoagulation using three-dimensional spectral domain optical coherence tomography. BMJ Case Rep 2016; 2016:bcr2016215743. [PMID: 27402655 PMCID: PMC4956966 DOI: 10.1136/bcr-2016-215743] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/27/2016] [Indexed: 01/05/2023] Open
Abstract
To study the retinal structural alterations and surface topography of retinal pigment epithelium (RPE) immediately following laser photocoagulation up to day 7. Cross-sectional retinal imaging and RPE segmentation maps on spectral domain optical coherence tomography were obtained immediately at hour 1, day 1, day 4 and day 7 following 532 nm neodymium:YAG laser photocoagulation in a 56-year-old male patient for branch retinal vein occlusion. Immediately postlaser, loss of reflectivity of all the retinal layers was observed. At hour 1, hyper-reflectivity of outer retinal layers was observed with increase in hyporeflective spaces by day 1. Immediately postlaser, pitting of the RPE was observed on surface topography which regressed at day 1. On day 4, smooth RPE surface topography was observed with the occurrence of small elevated areas on day 7. The present report provides an insight into the in vivo changes in the retinal structure and RPE surface topography after laser photocoagulation.
Collapse
Affiliation(s)
- Sandeep Saxena
- Department of Ophthalmology, King George's Medical University, Lucknow, Uttar Pradesh, India
| | - Nibha Mishra
- Department of Ophthalmology, King George's Medical University, Lucknow, Uttar Pradesh, India
| | - Surabhi Ruia
- Department of Ophthalmology, King George's Medical University, Lucknow, Uttar Pradesh, India
| | - Levent Akduman
- Department of Ophthalmology, Saint Louis University Eye Institute, St. Louis, Missouri, USA
| |
Collapse
|
13
|
Zhang Y, Lin J, Wei F. The Function and Roles of ADAMTS-7 in Inflammatory Diseases. Mediators Inflamm 2015; 2015:801546. [PMID: 26696755 DOI: 10.1155/2015/801546] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Revised: 10/19/2015] [Accepted: 11/18/2015] [Indexed: 12/11/2022] Open
Abstract
The ADAMTS proteinases are a group of multidomain and secreted metalloproteinases containing the thrombospondin motifs. ADAMTS-7 is a member of ADAMTS family and plays a crucial role in the pathogenesis of arthritis. Overexpression of ADAMTS-7 gene promotes the breakdown of cartilage oligomeric matrix protein (COMP) matrix and accelerates the progression of both surgically induced osteoarthritis and collagen-induced arthritis. Moreover, ADAMTS-7 and tumor necrosis factor-α (TNF-α) form a positive feedback loop in osteoarthritis. More significantly, granulin-epithelin precursor, a growth factor has important roles in bone development and bone-associated diseases, disturbs the interaction between ADAMTS-7 and COMP, and prevents COMP degradation. This review is based on our results and provides an overview of current knowledge of ADAMTS-7, including its structure, function, gene regulation, and inflammatory diseases involvement.
Collapse
|
14
|
Inagaki K, Shuo T, Katakura K, Ebihara N, Murakami A, Ohkoshi K. Sublethal Photothermal Stimulation with a Micropulse Laser Induces Heat Shock Protein Expression in ARPE-19 Cells. J Ophthalmol 2015; 2015:729792. [PMID: 26697211 DOI: 10.1155/2015/729792] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Revised: 11/09/2015] [Accepted: 11/15/2015] [Indexed: 01/04/2023] Open
Abstract
Purpose/Aim of the Study. Subthreshold micropulse diode laser photocoagulation is an effective treatment for macular edema. The molecular mechanisms underlying treatment success are poorly understood. Therefore, we investigated the effects of sublethal laser energy doses on a single layer of densely cultured ARPE-19 cells as a model of the human retinal pigment epithelium (RPE). Materials and Methods. A single layer of densely cultured human ARPE-19 cells was perpendicularly irradiated with a micropulse diode laser. Nonirradiated cells served as controls. Sublethal laser energy was applied to form a photocoagulation-like area in the cultured cell layers. Hsp70 expression was evaluated using quantitative polymerase chain reaction and immunocytochemistry. Results. Photocoagulation-like areas were successfully created in cultured ARPE-19 cell layers using sublethal laser energy with our laser irradiation system. Hsp70 mRNA expression in cell layers was induced within 30 min of laser irradiation, peaking at 3 h after irradiation. This increase was dependent on the number of laser pulses. Hsp70 upregulation was not observed in untreated cell layers. Immunostaining indicated that Hsp70 expression occurred concentrically around laser irradiation sites and persisted for 24 h following irradiation. Conclusion. Sublethal photothermal stimulation with a micropulse laser may facilitate Hsp70 expression in the RPE without inducing cellular damage.
Collapse
|
15
|
Tababat-Khani P, de la Torre C, Canals F, Bennet H, Simo R, Hernandez C, Fex M, Agardh CD, Hansson O, Agardh E. Photocoagulation of human retinal pigment epithelium in vitro: unravelling the effects on ARPE-19 by transcriptomics and proteomics. Acta Ophthalmol 2015; 93:348-54. [PMID: 25604382 DOI: 10.1111/aos.12649] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Accepted: 11/24/2014] [Indexed: 02/06/2023]
Abstract
PURPOSE Despite the extensive use of retinal photocoagulation for ischaemia and vascular leakage in retinal vascular disease, the molecular mechanisms behind its clinical beneficial effects are still poorly understood. One important target of laser irradiation is the retinal pigment epithelium (RPE). In this study, we aimed at identifying the isolated effects of photocoagulation of RPE at both the mRNA and protein expression levels. METHODS Human ARPE-19 cells were exposed to photocoagulation. Gene expression and protein expression were compared to untreated cells using microarray and liquid chromatography-mass spectrometry analysis. Genes and proteins queried by microarray and mass spectrometry were subjected to the Kyoto Encyclopedia of Genes and Genomes (KEGG) database pathway analyses. RESULTS Laser irradiation resulted in an induction of the cytoprotective heat-shock protein subfamily Hsp70 as well as in a suppression of the vascular permeability factor carbonic anhydrase 9 (CA9). These expression patterns were evident at both the mRNA and protein levels. KEGG pathway analyses revealed genes and proteins involved in cellular turnover, repair and inflammation. CONCLUSIONS By characterizing the transcriptional and translational effects of laser coagulation on the RPE cells in culture, we have revealed responses, which might contribute to some of the beneficial effects obtained by photocoagulation for ischaemia and vascular leakage in retinal vascular disease.
Collapse
Affiliation(s)
- Poya Tababat-Khani
- Unit on Vascular Diabetic Complications; Department of Clinical Sciences; Lund University Diabetes Center; Malmö Sweden
| | - Carolina de la Torre
- Proteomics Laboratory; Vall d'Hebron Institute of Oncology (VHIO); Vall d'Hebron University Hospital; Universitat Autònoma de Barcelona; Barcelona Spain
| | - Francesc Canals
- Proteomics Laboratory; Vall d'Hebron Institute of Oncology (VHIO); Vall d'Hebron University Hospital; Universitat Autònoma de Barcelona; Barcelona Spain
| | - Hedvig Bennet
- Unit on Diabetes and Celiac Disease; Department of Clinical Sciences; Lund University Diabetes Center; Malmö Sweden
| | - Rafael Simo
- Diabetes and Metabolism Research Unit and CIBERDEM; Vall d'Hebron Research Institute; Universitat Autònoma de Barcelona; Barcelona Spain
| | - Cristina Hernandez
- Diabetes and Metabolism Research Unit and CIBERDEM; Vall d'Hebron Research Institute; Universitat Autònoma de Barcelona; Barcelona Spain
| | - Malin Fex
- Unit on Diabetes and Celiac Disease; Department of Clinical Sciences; Lund University Diabetes Center; Malmö Sweden
| | - Carl-David Agardh
- Unit on Vascular Diabetic Complications; Department of Clinical Sciences; Lund University Diabetes Center; Malmö Sweden
| | - Ola Hansson
- Unit on Diabetes & Endocrinology; Department of Clinical Sciences; Lund University Diabetes Center; Malmö Sweden
| | - Elisabet Agardh
- Unit on Vascular Diabetic Complications; Department of Clinical Sciences; Lund University Diabetes Center; Malmö Sweden
| |
Collapse
|
16
|
Quezada C, Pieramici DJ, Matsui R, Rabena M, Graue F. Demarcation laser photocoagulation induced retinal necrosis and rupture resulting in large retinal tear formation. Photodiagnosis Photodyn Ther 2015; 12:314-6. [PMID: 25770055 DOI: 10.1016/j.pdpdt.2015.02.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2014] [Revised: 02/23/2015] [Accepted: 02/24/2015] [Indexed: 10/23/2022]
Abstract
Retinal tears after laser photocoagulation are a rare complication that occurs after intense laser. It is talked about among retina specialist occurring particularly at the end of a surgical case while applying endophotocoagulation; to the best our knowledge, there are no reports in the literature of a large retinal tear induced after attempted in-office demarcation laser photocoagulation (DLP) that simulated a giant retinal tear. DLP has been employed in the management of selected cases of macula sparring rhegmatogenous retinal detachment (RRD). Even though extension of the retinal detachment through the "laser barrier" is considered a failure of treatment, few complications have been described with the use of this less invasive retinal detachment repair technique. We describe a case of a high myopic woman who initially was treated with demarcation laser photocoagulation for an asymptomatic retinal detachment associated with a single horseshoe tear and a full thickness large retinal tear was created where the laser was placed. Intense laser photocoagulation resulted in abrupt laser induced retinal necrosis and rupture creating this large retinal break. Proper laser technique should reduce the risks associated with this procedure.
Collapse
Affiliation(s)
- Carlos Quezada
- California Retina Consultants and Research Foundation, Santa Barbara, CA, United States; Instituto de Oftalmología "Fundación Conde de Valenciana", Mexico City, Mexico.
| | - Dante J Pieramici
- California Retina Consultants and Research Foundation, Santa Barbara, CA, United States
| | - Rodrigo Matsui
- Instituto de Oftalmología "Fundación Conde de Valenciana", Mexico City, Mexico
| | - Melvin Rabena
- California Retina Consultants and Research Foundation, Santa Barbara, CA, United States
| | - Federico Graue
- Instituto de Oftalmología "Fundación Conde de Valenciana", Mexico City, Mexico
| |
Collapse
|
17
|
Cheung N, Wong D. Graefe's archive for clinical and experimental ophthalmology-instant glue for retinal detachment surgery? Graefes Arch Clin Exp Ophthalmol 2014; 252:1695-6. [PMID: 25283771 DOI: 10.1007/s00417-014-2788-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2014] [Accepted: 08/22/2014] [Indexed: 11/25/2022] Open
Affiliation(s)
- Ning Cheung
- The Eye Institute, Department of Ophthalmology, University of Hong Kong, Pokfulam, Hong Kong, China
| | | |
Collapse
|