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Pollalis D, Nair GKG, Leung J, Bloemhof CM, Bailey JK, Pennington BO, Kelly KR, Khan AI, Yeh AK, Sundaram KS, Clegg DO, Peng CC, Xu L, Georgescu C, Wren JD, Lee SY. Dynamics of microRNA secreted via extracellular vesicles during the maturation of embryonic stem cell-derived retinal pigment epithelium. JOURNAL OF EXTRACELLULAR BIOLOGY 2024; 3:e70001. [PMID: 39281021 PMCID: PMC11393772 DOI: 10.1002/jex2.70001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 07/31/2024] [Accepted: 08/04/2024] [Indexed: 09/18/2024]
Abstract
Retinal pigment epithelial (RPE) cells are exclusive to the retina, critically multifunctional in maintaining the visual functions and health of photoreceptors and the retina. Despite their vital functions throughout lifetime, RPE cells lack regenerative capacity, rendering them vulnerable which can lead to degenerative retinal diseases. With advancements in stem cell technology enabling the differentiation of functional cells from pluripotent stem cells and leveraging the robust autocrine and paracrine functions of RPE cells, extracellular vesicles (EVs) secreted by RPE cells hold significant therapeutic potential in supplementing RPE cell activity. While previous research has primarily focused on the trophic factors secreted by RPE cells, there is a lack of studies investigating miRNA, which serves as a master regulator of gene expression. Profiling and defining the functional role of miRNA contained within RPE-secreted EVs is critical as it constitutes a necessary step in identifying the optimal phenotype of the EV-secreting cell and understanding the biological cargo of EVs to develop EV-based therapeutics. In this study, we present a comprehensive profile of miRNA in small extracellular vesicles (sEVs) secreted during RPE maturation following differentiation from human embryonic stem cells (hESCs); early-stage hESC-RPE (20-21 days in culture), mid-stage hESC-RPE (30-31 days in culture) and late-stage hESC-RPE (60-61 days in culture). This exploration is essential for ongoing efforts to develop and optimize EV-based intraocular therapeutics utilizing RPE-secreted EVs, which may significantly impact the function of dysfunctional RPE cells in retinal diseases.
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Affiliation(s)
- Dimitrios Pollalis
- USC Roski Eye Institute, Keck School of Medicine University of Southern California Los Angeles California USA
- USC Ginsburg Institute for Biomedical Therapeutics University of Southern California Los Angeles California USA
| | - Gopa Kumar Gopinadhan Nair
- USC Roski Eye Institute, Keck School of Medicine University of Southern California Los Angeles California USA
- USC Ginsburg Institute for Biomedical Therapeutics University of Southern California Los Angeles California USA
| | - Justin Leung
- USC Roski Eye Institute, Keck School of Medicine University of Southern California Los Angeles California USA
- USC Dornsife College of Letters, Arts and Sciences Los Angeles California USA
| | - Clarisa Marie Bloemhof
- USC Roski Eye Institute, Keck School of Medicine University of Southern California Los Angeles California USA
- University of Southern California Los Angeles California USA
- School of Medicine California University of Science and Medicine Colton California USA
| | - Jeffrey K Bailey
- Center for Stem Cell Biology and Engineering, Neuroscience Research Institute University of California Santa Barbara California USA
- Department of Molecular Cellular and Developmental Biology University of California Santa Barbara California USA
| | - Britney O Pennington
- Center for Stem Cell Biology and Engineering, Neuroscience Research Institute University of California Santa Barbara California USA
- Department of Molecular Cellular and Developmental Biology University of California Santa Barbara California USA
| | - Kaitlin R Kelly
- Center for Stem Cell Biology and Engineering, Neuroscience Research Institute University of California Santa Barbara California USA
- Department of Molecular Cellular and Developmental Biology University of California Santa Barbara California USA
| | - Amir I Khan
- Center for Stem Cell Biology and Engineering, Neuroscience Research Institute University of California Santa Barbara California USA
- Department of Molecular Cellular and Developmental Biology University of California Santa Barbara California USA
| | - Ashley K Yeh
- Department of Molecular Cellular and Developmental Biology University of California Santa Barbara California USA
- College of Creative Studies, Biology University of California Santa Barbara California USA
| | - Kartik S Sundaram
- Center for Stem Cell Biology and Engineering, Neuroscience Research Institute University of California Santa Barbara California USA
- Biomolecular Science and Engineering University of California Santa Barbara California USA
| | - Dennis O Clegg
- Center for Stem Cell Biology and Engineering, Neuroscience Research Institute University of California Santa Barbara California USA
- Department of Molecular Cellular and Developmental Biology University of California Santa Barbara California USA
- Biomolecular Science and Engineering University of California Santa Barbara California USA
| | - Chen-Ching Peng
- USC Roski Eye Institute, Keck School of Medicine University of Southern California Los Angeles California USA
- Children's Hospital Los Angeles Vision Center Los Angeles California USA
| | - Liya Xu
- USC Roski Eye Institute, Keck School of Medicine University of Southern California Los Angeles California USA
- Children's Hospital Los Angeles Vision Center Los Angeles California USA
| | - Constantin Georgescu
- Genes & Human Diseases Research Program Oklahoma Medical Research Foundation Oklahoma City Oklahoma USA
| | - Jonathan D Wren
- Genes & Human Diseases Research Program Oklahoma Medical Research Foundation Oklahoma City Oklahoma USA
| | - Sun Young Lee
- USC Roski Eye Institute, Keck School of Medicine University of Southern California Los Angeles California USA
- USC Ginsburg Institute for Biomedical Therapeutics University of Southern California Los Angeles California USA
- Department of Physiology and Neuroscience, Keck School of Medicine University of Southern California Los Angeles California USA
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Ortiz C, Tahiri H, Yang C, Gilbert C, Fortin C, Hardy P. The microRNA Let-7f Induces Senescence and Exacerbates Oxidative Stress in Retinal Pigment Epithelial Cells. Antioxidants (Basel) 2024; 13:646. [PMID: 38929085 PMCID: PMC11200580 DOI: 10.3390/antiox13060646] [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: 04/28/2024] [Revised: 05/18/2024] [Accepted: 05/23/2024] [Indexed: 06/28/2024] Open
Abstract
This study aims to investigate the role of microRNA let-7f in the dysfunction and degeneration of retinal pigment epithelium (RPE) cells through the induction of senescence and oxidative stress. Furthermore, we explore whether let-7f inhibition can protect these cells against sodium iodate (SI)-induced oxidative stress. Oxidative stress and let-7f expression are reciprocally regulated in retinal pigment epithelial cells. Overexpression of let-7f in ARPE-19 cells induced oxidative stress as demonstrated by increased reactive oxygen species (ROS) production as well as senescence. Inhibition of let-7f successfully protected RPE cells from the detrimental effects induced by SI. In addition, let-7f overexpression induced RPE cellular dysfunction by diminishing their migratory capabilities and reducing the phagocytosis of porcine photoreceptor outer segments (POS). Results were further confirmed in vivo by intravitreal injections of SI and let-7f antagomir in C57BL/6 mice. Our results provide strong evidence that let-7f is implicated in the dysfunction of RPE cells through the induction of senescence and oxidative injury. These findings may help to uncover novel and relevant processes in the pathogenesis of dry AMD.
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Affiliation(s)
- Christina Ortiz
- Departments of Pharmacology and Physiology, Faculty of Medicine, Université de Montréal, Montréal, QC H3T 1J4, Canada;
| | - Houda Tahiri
- CHU Sainte-Justine Research Center, Université de Montréal, Montréal, QC H3T 1C5, Canada; (H.T.); (C.Y.); (C.G.); (C.F.)
| | - Chun Yang
- CHU Sainte-Justine Research Center, Université de Montréal, Montréal, QC H3T 1C5, Canada; (H.T.); (C.Y.); (C.G.); (C.F.)
| | - Claudia Gilbert
- CHU Sainte-Justine Research Center, Université de Montréal, Montréal, QC H3T 1C5, Canada; (H.T.); (C.Y.); (C.G.); (C.F.)
| | - Carl Fortin
- CHU Sainte-Justine Research Center, Université de Montréal, Montréal, QC H3T 1C5, Canada; (H.T.); (C.Y.); (C.G.); (C.F.)
| | - Pierre Hardy
- Departments of Pharmacology and Physiology, Faculty of Medicine, Université de Montréal, Montréal, QC H3T 1J4, Canada;
- CHU Sainte-Justine Research Center, Université de Montréal, Montréal, QC H3T 1C5, Canada; (H.T.); (C.Y.); (C.G.); (C.F.)
- Department of Pediatrics, Faculty of Medicine, Université de Montréal, Montréal, QC H3T 1J4, Canada
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3
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Martins B, Pires M, Ambrósio AF, Girão H, Fernandes R. Contribution of extracellular vesicles for the pathogenesis of retinal diseases: shedding light on blood-retinal barrier dysfunction. J Biomed Sci 2024; 31:48. [PMID: 38730462 PMCID: PMC11088087 DOI: 10.1186/s12929-024-01036-3] [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: 12/22/2023] [Accepted: 04/30/2024] [Indexed: 05/12/2024] Open
Abstract
Retinal degenerative diseases, including diabetic retinopathy (DR) and age-related macular degeneration (AMD), loom as threats to vision, causing detrimental effects on the structure and function of the retina. Central to understanding these diseases, is the compromised state of the blood-retinal barrier (BRB), an effective barrier that regulates the influx of immune and inflammatory components. Whether BRB breakdown initiates retinal distress, or is a consequence of disease progression, remains enigmatic. Nevertheless, it is an indication of retinal dysfunction and potential vision loss.The intricate intercellular dialogues among retinal cell populations remain unintelligible in the complex retinal milieu, under conditions of inflammation and oxidative stress. The retina, a specialized neural tissue, sustains a ceaseless demand for oxygen and nutrients from two vascular networks. The BRB orchestrates the exchange of molecules and fluids within this specialized region, comprising the inner BRB (iBRB) and the outer BRB (oBRB). Extracellular vesicles (EVs) are small membranous structures, and act as messengers facilitating intercellular communication in this milieu.EVs, both from retinal and peripheral immune cells, increase complexity to BRB dysfunction in DR and AMD. Laden with bioactive cargoes, these EVs can modulate the retinal microenvironment, influencing disease progression. Our review delves into the multifaceted role of EVs in retinal degenerative diseases, elucidating the molecular crosstalk they orchestrate, and their microRNA (miRNA) content. By shedding light on these nanoscale messengers, from their biogenesis, release, to interaction and uptake by target cells, we aim to deepen the comprehension of BRB dysfunction and explore their therapeutic potential, therefore increasing our understanding of DR and AMD pathophysiology.
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Affiliation(s)
- Beatriz Martins
- University Coimbra, Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine, Coimbra, 3000- 548, Portugal
- University of Coimbra, Institute of Pharmacology and Experimental Therapeutics, Faculty of Medicine, Coimbra, 3000-548, Portugal
- University of Coimbra, Center for Innovative Biomedicine and Biotechnology (CIBB), Coimbra, 3004-531, Portugal
| | - Maria Pires
- University Coimbra, Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine, Coimbra, 3000- 548, Portugal
- University of Coimbra, Institute of Pharmacology and Experimental Therapeutics, Faculty of Medicine, Coimbra, 3000-548, Portugal
- University of Coimbra, Center for Innovative Biomedicine and Biotechnology (CIBB), Coimbra, 3004-531, Portugal
| | - António Francisco Ambrósio
- University Coimbra, Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine, Coimbra, 3000- 548, Portugal
- University of Coimbra, Center for Innovative Biomedicine and Biotechnology (CIBB), Coimbra, 3004-531, Portugal
- Clinical Academic Center of Coimbra (CACC), Coimbra, 3004-561, Portugal
- Association for Innovation and Biomedical Research on Light and Image (AIBILI), Coimbra, 3000-548, Portugal
| | - Henrique Girão
- University Coimbra, Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine, Coimbra, 3000- 548, Portugal
- University of Coimbra, Center for Innovative Biomedicine and Biotechnology (CIBB), Coimbra, 3004-531, Portugal
- Clinical Academic Center of Coimbra (CACC), Coimbra, 3004-561, Portugal
| | - Rosa Fernandes
- University Coimbra, Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine, Coimbra, 3000- 548, Portugal.
- University of Coimbra, Institute of Pharmacology and Experimental Therapeutics, Faculty of Medicine, Coimbra, 3000-548, Portugal.
- University of Coimbra, Center for Innovative Biomedicine and Biotechnology (CIBB), Coimbra, 3004-531, Portugal.
- Clinical Academic Center of Coimbra (CACC), Coimbra, 3004-561, Portugal.
- Association for Innovation and Biomedical Research on Light and Image (AIBILI), Coimbra, 3000-548, Portugal.
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Zhu J, Huang J, Sun Y, Xu W, Qian H. Emerging role of extracellular vesicles in diabetic retinopathy. Theranostics 2024; 14:1631-1646. [PMID: 38389842 PMCID: PMC10879872 DOI: 10.7150/thno.92463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Accepted: 01/26/2024] [Indexed: 02/24/2024] Open
Abstract
Diabetic retinopathy (DR), a complex complication of diabetes mellitus (DM), is a leading cause of adult blindness. Hyperglycemia triggers DR, resulting in microvascular damage, glial apoptosis, and neuronal degeneration. Inflammation and oxidative stress play crucial roles during this process. Current clinical treatments for DR primarily target the advanced retinal disorder but offer limited benefits with inevitable side effects. Extracellular vesicles (EVs) exhibit unique morphological features, contents, and biological properties and can be found in cell culture supernatants, various body fluids, and tissues. In DR, EVs with specific cargo composition would induce the reaction of receptor cell once internalized, mediating cellular communication and disease progression. Increasing evidence indicates that monitoring changes in EV quantity and content in DR can aid in disease diagnosis and prognosis. Furthermore, extensive research is investigating the potential of these nanoparticles as effective therapeutic agents in preclinical models of DR. This review explores the current understanding of the pathological effects of EVs in DR development, discusses their potential as biomarkers and therapeutic strategies, and paves the way for further research and therapeutic advancements.
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Affiliation(s)
- Junyan Zhu
- Department of Gynecology and obstetrics, The Affiliated Yixing Hospital of Jiangsu University, 214200, China
- Jiangsu Province Key Laboratory of Medical Science and Laboratory Medicine, Department of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Jin Huang
- Department of Gynecology and obstetrics, The Affiliated Yixing Hospital of Jiangsu University, 214200, China
| | - Yaoxiang Sun
- Department of clinical laboratory, The Affiliated Yixing Hospital of Jiangsu University, Yixing, 214200, China
| | - Wenrong Xu
- Department of Gynecology and obstetrics, The Affiliated Yixing Hospital of Jiangsu University, 214200, China
- Jiangsu Province Key Laboratory of Medical Science and Laboratory Medicine, Department of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Hui Qian
- Jiangsu Province Key Laboratory of Medical Science and Laboratory Medicine, Department of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, China
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Romero FJ, Diaz-Llopis M, Romero-Gomez MI, Miranda M, Romero-Wenz R, Sancho-Pelluz J, Romero B, Muriach M, Barcia JM. Small Extracellular Vesicles and Oxidative Pathophysiological Mechanisms in Retinal Degenerative Diseases. Int J Mol Sci 2024; 25:1618. [PMID: 38338894 PMCID: PMC10855665 DOI: 10.3390/ijms25031618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 01/20/2024] [Accepted: 01/26/2024] [Indexed: 02/12/2024] Open
Abstract
This review focuses on the role of small extracellular vesicles in the pathophysiological mechanisms of retinal degenerative diseases. Many of these mechanisms are related to or modulated by the oxidative burden of retinal cells. It has been recently demonstrated that cellular communication in the retina involves extracellular vesicles and that their rate of release and cargo features might be affected by the cellular environment, and in some instances, they might also be mediated by autophagy. The fate of these vesicles is diverse: they could end up in circulation being used as markers, or target neighbor cells modulating gene and protein expression, or eventually, in angiogenesis. Neovascularization in the retina promotes vision loss in diseases such as diabetic retinopathy and age-related macular degeneration. The importance of micro RNAs, either as small extracellular vesicles' cargo or free circulating, in the regulation of retinal angiogenesis is also discussed.
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Affiliation(s)
- Francisco J. Romero
- Hospital General de Requena, Conselleria de Sanitat, Generalitat Valenciana, 46340 Requena, Spain;
| | - Manuel Diaz-Llopis
- Facultad de Medicina y Odontología, Universitat de València, 46010 Valencia, Spain;
| | | | - Maria Miranda
- Facultad de Ciencias de la Salud, Universidad CEU-Cardenal Herrera, 46115 Alfara del Patriarca, Spain;
| | - Rebeca Romero-Wenz
- Hospital General de Requena, Conselleria de Sanitat, Generalitat Valenciana, 46340 Requena, Spain;
| | - Javier Sancho-Pelluz
- Facultad de Medicina y Ciencias de la Salud, Universidad Católica de Valencia, 46001 Valencia, Spain; (J.S.-P.); (B.R.); (J.M.B.)
| | - Belén Romero
- Facultad de Medicina y Ciencias de la Salud, Universidad Católica de Valencia, 46001 Valencia, Spain; (J.S.-P.); (B.R.); (J.M.B.)
- Unidad de Cuidados intensivos, Hospital de Manises, 46940 Manises, Spain
| | - Maria Muriach
- Facultad de Ciencias de la Salud, Universitat Jaume I, 12006 Castelló de la Plana, Spain;
| | - Jorge M. Barcia
- Facultad de Medicina y Ciencias de la Salud, Universidad Católica de Valencia, 46001 Valencia, Spain; (J.S.-P.); (B.R.); (J.M.B.)
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Manai F, Smedowski A, Kaarniranta K, Comincini S, Amadio M. Extracellular vesicles in degenerative retinal diseases: A new therapeutic paradigm. J Control Release 2024; 365:448-468. [PMID: 38013069 DOI: 10.1016/j.jconrel.2023.11.035] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 11/03/2023] [Accepted: 11/18/2023] [Indexed: 11/29/2023]
Abstract
Nanoscale extracellular vesicles (EVs), consisting of exomers, exosomes and microvesicles/ectosomes, have been extensively investigated in the last 20 years, although their biological role is still something of a mystery. EVs are involved in the transfer of lipids, nucleic acids and proteins from donor to recipient cells or distant organs as well as regulating cell-cell communication and signaling. Thus, EVs are important in intercellular communication and this is not limited to sister cells, but may also mediate the crosstalk between different cell types even over long distances. EVs play crucial functions in both cellular homeostasis and the pathogenesis of diseases, and since their contents reflect the status of the donor cell, they represent an additional valuable source of information for characterizing complex biological processes. Recent advances in isolation and analytical methods have led to substantial improvements in both characterizing and engineering EVs, leading to their use either as novel biomarkers for disease diagnosis/prognosis or even as novel therapies. Due to their capacity to carry biomolecules, various EV-based therapeutic applications have been devised for several pathological conditions, including eye diseases. In the eye, EVs have been detected in the retina, aqueous humor, vitreous body and also in tears. Experiences with other forms of intraocular drug applications have opened new ways to use EVs in the treatment of retinal diseases. We here provide a comprehensive summary of the main in vitro, in vivo, and ex vivo literature-based studies on EVs' role in ocular physiological and pathological conditions. We have focused on age-related macular degeneration, diabetic retinopathy, glaucoma, which are common eye diseases leading to permanent blindness, if not treated properly. In addition, the putative use of EVs in retinitis pigmentosa and other retinopathies is discussed. Finally, we have reviewed the potential of EVs as therapeutic tools and/or biomarkers in the above-mentioned retinal disorders. Evidence emerging from experimental disease models and human material strongly suggests future diagnostic and/or therapeutic exploitation of these biological agents in various ocular disorders with a good possibility to improve the patient's quality of life.
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Affiliation(s)
- Federico Manai
- Department of Biology and Biotechnology "L. Spallanzani", University of Pavia, Pavia, Italy
| | - Adrian Smedowski
- Department of Ophthalmology, Faculty of Medical Sciences in Katowice, Medical University of Silesia in Katowice, Katowice, Poland; GlaucoTech Co., Katowice, Poland
| | - Kai Kaarniranta
- Department of Ophthalmology, University of Eastern Finland, Kuopio, Finland; Department of Ophthalmology, Kuopio University Hospital, Kuopio, Finland; Department of Molecular Genetics, University of Lodz, Lodz, Poland
| | - Sergio Comincini
- Department of Biology and Biotechnology "L. Spallanzani", University of Pavia, Pavia, Italy
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Cioanca AV, Wooff Y, Aggio‐Bruce R, Sekar R, Dietrich C, Natoli R. Multiomic integration reveals neuronal-extracellular vesicle coordination of gliotic responses in degeneration. J Extracell Vesicles 2023; 12:e12393. [PMID: 38082562 PMCID: PMC10714032 DOI: 10.1002/jev2.12393] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 09/20/2023] [Accepted: 11/14/2023] [Indexed: 12/18/2023] Open
Abstract
In the central nervous system (CNS), including in the retina, neuronal-to-glial communication is critical for maintaining tissue homeostasis including signal transmission, transfer of trophic factors, and in the modulation of inflammation. Extracellular vesicle (EV)-mediated transport of molecular messages to regulate these processes has been suggested as a mechanism by which bidirectional communication between neuronal and glial cells can occur. In this work we employed multiomics integration to investigate the role of EV communication pathways from neurons to glial cells within the CNS, using the mouse retina as a readily accessible representative CNS tissue. Further, using a well-established model of degeneration, we aimed to uncover how dysregulation of homeostatic messaging between neurons and glia via EV can result in retinal and neurodegenerative diseases. EV proteomics, glia microRNA (miRNA) Open Array and small RNA sequencing, and retinal single cell sequencing were performed, with datasets integrated and analysed computationally. Results demonstrated that exogenous transfer of neuronal miRNA to glial cells was mediated by EV and occurred as a targeted response during degeneration to modulate gliotic inflammation. Taken together, our results support a model of neuronal-to-glial communication via EV, which could be harnessed for therapeutic targeting to slow the progression of retinal-, and neuro-degenerations of the CNS.
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Affiliation(s)
- Adrian V. Cioanca
- Clear Vision Research Group, Eccles Institute of Neuroscience, John Curtin School of Medical Research, College of Health and MedicineThe Australian National UniversityCanberraAustralia
- School of Medicine and Psychology, College of Health and MedicineThe Australian National UniversityCanberraAustralia
| | - Yvette Wooff
- Clear Vision Research Group, Eccles Institute of Neuroscience, John Curtin School of Medical Research, College of Health and MedicineThe Australian National UniversityCanberraAustralia
- School of Medicine and Psychology, College of Health and MedicineThe Australian National UniversityCanberraAustralia
| | - Riemke Aggio‐Bruce
- Clear Vision Research Group, Eccles Institute of Neuroscience, John Curtin School of Medical Research, College of Health and MedicineThe Australian National UniversityCanberraAustralia
- School of Medicine and Psychology, College of Health and MedicineThe Australian National UniversityCanberraAustralia
| | - Rakshanya Sekar
- Clear Vision Research Group, Eccles Institute of Neuroscience, John Curtin School of Medical Research, College of Health and MedicineThe Australian National UniversityCanberraAustralia
- School of Medicine and Psychology, College of Health and MedicineThe Australian National UniversityCanberraAustralia
| | - Catherine Dietrich
- Clear Vision Research Group, Eccles Institute of Neuroscience, John Curtin School of Medical Research, College of Health and MedicineThe Australian National UniversityCanberraAustralia
- Peter MacCallum Cancer CentreMelbourneVictoriaAustralia
| | - Riccardo Natoli
- Clear Vision Research Group, Eccles Institute of Neuroscience, John Curtin School of Medical Research, College of Health and MedicineThe Australian National UniversityCanberraAustralia
- School of Medicine and Psychology, College of Health and MedicineThe Australian National UniversityCanberraAustralia
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8
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Gu F, Jiang J, Sun P. Recent advances of exosomes in age-related macular degeneration. Front Pharmacol 2023; 14:1204351. [PMID: 37332352 PMCID: PMC10272348 DOI: 10.3389/fphar.2023.1204351] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 05/25/2023] [Indexed: 06/20/2023] Open
Abstract
Exosomes are 30-150 nm extracellular vesicles that are secreted by almost all types of cells. Exosomes contain a variety of biologically active substances, such as proteins, nucleic acids, and lipids, and are important in the intercellular communication of biological mediators involved in nerve injury and repair, vascular regeneration, immune response, fibrosis formation, and many other pathophysiological processes. Although it has been extensively studied in the field of cancer, the exploration of ocular diseases has only just begun. Here, we discuss the latest developments in exosomes for age-related macular degeneration (AMD), including the pathogenesis of exosomes in age-related macular degeneration, their potential as diagnostic markers, and therapeutic vectors of the disease. Finally, the study of exosomes in age-related macular degeneration is still relatively few, and more detailed basic research and clinical trials are needed to verify its application in treatment and diagnosis, so as to adopt more personalized diagnosis and treatment strategies to stop the progression of age-related macular degeneration.
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Chatterjee A, Singh R. Extracellular vesicles: an emerging player in retinal homeostasis. Front Cell Dev Biol 2023; 11:1059141. [PMID: 37181750 PMCID: PMC10166895 DOI: 10.3389/fcell.2023.1059141] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 04/10/2023] [Indexed: 05/16/2023] Open
Abstract
Extracellular vesicles (EVs) encompass secreted membrane vesicles of varied sizes, including exosomes (-30-200 nm) and microvesicles (MVs) that are ∼100-1,000 nm in size. EVs play an important role in autocrine, paracrine, and endocrine signaling and are implicated in myriad human disorders including prominent retinal degenerative diseases, like age related macular degeneration (AMD) and diabetic retinopathy (DR). Studies of EVs in vitro using transformed cell lines, primary cultures, and more recently, induced pluripotent stem cell derived retinal cell type(s) (e.g., retinal pigment epithelium) have provided insights into the composition and function of EVs in the retina. Furthermore, consistent with a causal role of EVs in retinal degenerative diseases, altering EV composition has promoted pro-retinopathy cellular and molecular events in both in vitro and in vivo models. In this review, we summarize the current understanding of the role of EVs in retinal (patho)physiology. Specifically, we will focus on disease-associated EV alterations in specific retinal diseases. Furthermore, we discuss the potential utility of EVs in diagnostic and therapeutic strategies for targeting retinal diseases.
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Affiliation(s)
- Amit Chatterjee
- Department of Ophthalmology, University of Rochester, Rochester, NY, United States
- Department of Biomedical Genetics, University of Rochester, Rochester, NY, United States
- Center for Visual Science, University of Rochester, Rochester, NY, United States
| | - Ruchira Singh
- Department of Ophthalmology, University of Rochester, Rochester, NY, United States
- Department of Biomedical Genetics, University of Rochester, Rochester, NY, United States
- Center for Visual Science, University of Rochester, Rochester, NY, United States
- UR Stem Cell and Regenerative Medicine Center, University of Rochester, Rochester, NY, United States
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10
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Liu A, Hefley B, Escandon P, Nicholas SE, Karamichos D. Salivary Exosomes in Health and Disease: Future Prospects in the Eye. Int J Mol Sci 2023; 24:ijms24076363. [PMID: 37047335 PMCID: PMC10094317 DOI: 10.3390/ijms24076363] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 03/21/2023] [Accepted: 03/24/2023] [Indexed: 03/30/2023] Open
Abstract
Exosomes are a group of vesicles that package and transport DNA, RNA, proteins, and lipids to recipient cells. They can be derived from blood, saliva, urine, and/or other biological tissues. Their impact on several diseases, such as neurodegenerative, autoimmune, and ocular diseases, have been reported, but not fully unraveled. The exosomes that are derived from saliva are less studied, but offer significant advantages over exosomes from other sources, due to their accessibility and ease of collection. Thus, their role in the pathophysiology of diseases is largely unknown. In the context of ocular diseases, salivary exosomes have been under-utilized, thus creating an enormous gap in the literature. The current review discusses the state of exosomes research on systemic and ocular diseases and highlights the role and potential of salivary exosomes as future ocular therapeutic vehicles.
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Affiliation(s)
- Angela Liu
- Texas College of Osteopathic Medicine, University of North Texas Health Science Center, 3500 Camp Bowie Blvd., Fort Worth, TX 76107, USA
- North Texas Eye Research Institute, University of North Texas Health Science Center, 3430 Camp Bowie Blvd., Fort Worth, TX 76107, USA
| | - Brenna Hefley
- North Texas Eye Research Institute, University of North Texas Health Science Center, 3430 Camp Bowie Blvd., Fort Worth, TX 76107, USA
- Department of Pharmaceutical Sciences, University of North Texas Health Science Center, 3500 Camp Bowie Blvd., Fort Worth, TX 76107, USA
| | - Paulina Escandon
- North Texas Eye Research Institute, University of North Texas Health Science Center, 3430 Camp Bowie Blvd., Fort Worth, TX 76107, USA
- Department of Pharmaceutical Sciences, University of North Texas Health Science Center, 3500 Camp Bowie Blvd., Fort Worth, TX 76107, USA
| | - Sarah E. Nicholas
- North Texas Eye Research Institute, University of North Texas Health Science Center, 3430 Camp Bowie Blvd., Fort Worth, TX 76107, USA
- Department of Pharmaceutical Sciences, University of North Texas Health Science Center, 3500 Camp Bowie Blvd., Fort Worth, TX 76107, USA
| | - Dimitrios Karamichos
- North Texas Eye Research Institute, University of North Texas Health Science Center, 3430 Camp Bowie Blvd., Fort Worth, TX 76107, USA
- Department of Pharmaceutical Sciences, University of North Texas Health Science Center, 3500 Camp Bowie Blvd., Fort Worth, TX 76107, USA
- Department of Pharmacology and Neuroscience, University of North Texas Health Science Center, 3500 Camp Bowie Blvd., Fort Worth, TX 76107, USA
- Correspondence: ; Tel.: +1-817-735-2101
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11
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Shekari F, Abyadeh M, Meyfour A, Mirzaei M, Chitranshi N, Gupta V, Graham SL, Salekdeh GH. Extracellular Vesicles as reconfigurable therapeutics for eye diseases: Promises and hurdles. Prog Neurobiol 2023; 225:102437. [PMID: 36931589 DOI: 10.1016/j.pneurobio.2023.102437] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Accepted: 03/14/2023] [Indexed: 03/17/2023]
Abstract
A large number of people worldwide suffer from visual impairment. However, most available therapies rely on impeding the development of a particular eye disorder. Therefore, there is an increasing demand for effective alternative treatments, specifically regenerative therapies. Extracellular vesicles, including exosomes, ectosomes, or microvesicles, are released by cells and play a potential role in regeneration. Following an introduction to EV biogenesis and isolation methods, this integrative review provides an overview of our current knowledge about EVs as a communication paradigm in the eye. Then, we focused on the therapeutic applications of EVs derived from conditioned medium, biological fluid, or tissue and highlighted some recent developments in strategies to boost the innate therapeutic potential of EVs by loading various kinds of drugs or being engineered at the level of producing cells or EVs. Challenges faced in the development of safe and effective translation of EV-based therapy into clinical settings for eye diseases are also discussed to pave the road toward reaching feasible regenerative therapies required for eye-related complications.
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Affiliation(s)
- Faezeh Shekari
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran; Advanced Therapy Medicinal Product Technology Development Center (ATMP-TDC), Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran.
| | | | - Anna Meyfour
- Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mehdi Mirzaei
- Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, North Ryde, Sydney, NSW, Australia
| | - Nitin Chitranshi
- Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, North Ryde, Sydney, NSW, Australia
| | - Vivek Gupta
- Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, North Ryde, Sydney, NSW, Australia
| | - Stuart L Graham
- Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, North Ryde, Sydney, NSW, Australia
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12
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Medina-Castellanos E, Salgado-Bautista DA, Martínez-Andrade JM, Cadena-Nava RD, Riquelme M. Nanosized extracellular vesicles released by Neurospora crassa hyphae. Fungal Genet Biol 2023; 165:103778. [PMID: 36690295 DOI: 10.1016/j.fgb.2023.103778] [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: 11/01/2022] [Revised: 01/13/2023] [Accepted: 01/17/2023] [Indexed: 01/22/2023]
Abstract
Extracellular vesicles (EVs) are nanosized structures containing proteins, lipids, and nucleic acids, released by living cells to the surrounding medium. EVs participate in diverse processes, such as intercellular communication, virulence, and disease. In pathogenic fungi, EVs carry enzymes that allow them to invade the host or undergo environmental adaptation successfully. In Neurospora crassa, a non-pathogenic filamentous fungus widely used as a model organism, the vesicle-dependent secretory mechanisms that lead to polarized growth are well studied. In contrast, biosynthesis of EVs in this fungus has been practically unexplored. In the present work, we analyzed N. crassa culture's supernatant for the presence of EVs by dynamic light scattering (DLS), transmission electron microscopy (TEM) and proteomic analysis. We identified spherical membranous structures, with a predominant subpopulation averaging a hydrodynamic diameter (dh) of 68 nm and a particle diameter (dp) of 38 nm. EV samples stained with osmium tetroxide vapors were better resolved than those stained with uranyl acetate. Mass spectrometry analysis identified 252 proteins, including enzymes involved in carbohydrate metabolic processes, oxidative stress response, cell wall organization/remodeling, and circadian clock-regulated proteins. Some of these proteins have been previously reported in exosomes from human cells or in EVs of other fungi. In view of the results, it is suggested a putative role for EVs in cell wall biosynthesis and vegetative development in N. crassa.
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Affiliation(s)
- Elizabeth Medina-Castellanos
- Department of Microbiology, Centro de Investigación Científica y Educación Superior de Ensenada (CICESE), Ensenada, Mexico
| | - Daniel A Salgado-Bautista
- Department of Microbiology, Centro de Investigación Científica y Educación Superior de Ensenada (CICESE), Ensenada, Mexico
| | - Juan M Martínez-Andrade
- Department of Microbiology, Centro de Investigación Científica y Educación Superior de Ensenada (CICESE), Ensenada, Mexico
| | - Ruben Dario Cadena-Nava
- Department of Bionanotechnology, Centro de Nanociencias y Nanotecnología, Universidad Nacional Autónoma de México, Ensenada, Mexico
| | - Meritxell Riquelme
- Department of Microbiology, Centro de Investigación Científica y Educación Superior de Ensenada (CICESE), Ensenada, Mexico.
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13
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Nie F, Hao S, Ji Y, Zhang Y, Sun H, Will M, Han W, Ding Y. Biphasic dose response in the anti-inflammation experiment of PBM. Lasers Med Sci 2023; 38:66. [PMID: 36749428 DOI: 10.1007/s10103-022-03664-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 10/22/2022] [Indexed: 02/08/2023]
Abstract
Non-invasive laser irradiation can induce photobiomodulation (PBM) effects in cells and tissues, which can help reduce inflammation and pain in several clinical scenarios. The purpose of this study is to review the current literature to verify whether PBM can produce dose effects in anti-inflammatory experiments by summarizing the clinical and experimental effects of different laser parameters of several diseases. The so-called Arndt-Schulz curve is often used to describe two-phase dose reactions, assuming small doses of therapeutic stimulation, medium doses of inhibition, and large doses of killing. In the past decade, more and more attention has been paid to the clinical application of PBM, especially in the field of anti-inflammation, because it represents a non-invasive strategy with few contraindications. Although there are different types of lasers available, their use is adjusted by different parameters. In general, the parameters involved are wavelength, energy density, power output, and radiation time. However, due to the biphasic effect, the scientific and medical communities remain puzzled by the ways in which the application of PBM must be modified depending on its clinical application. This article will discuss these parameter adjustments and will then also briefly introduce two controversial theories of the molecular and cellular mechanisms of PBM. A better understanding of the extent of dualistic dose response in low-intensity laser therapy is necessary to optimize clinical treatment. It also allows us to explore the most dependable mechanism for PBM use and, ultimately, standardize treatment for patients with various diseases.
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Affiliation(s)
- Fang Nie
- Central Laboratory, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Shaolong Hao
- Central Laboratory, Beijing Luhe Hospital, Capital Medical University, Beijing, China
- Department of General Surgery, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Yu Ji
- Central Laboratory, Beijing Luhe Hospital, Capital Medical University, Beijing, China
- Department of General Surgery, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Yan Zhang
- Central Laboratory, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Hao Sun
- Central Laboratory, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Melissa Will
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, USA
| | - Wei Han
- Central Laboratory, Beijing Luhe Hospital, Capital Medical University, Beijing, China.
- Department of General Surgery, Beijing Luhe Hospital, Capital Medical University, Beijing, China.
| | - YuChuan Ding
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, USA.
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14
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Meng G, Tang W, Huang E, Li Z, Feng H. A comprehensive assessment of cell type-specific differential expression methods in bulk data. Brief Bioinform 2023; 24:bbac516. [PMID: 36472568 PMCID: PMC9851321 DOI: 10.1093/bib/bbac516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 10/08/2022] [Accepted: 10/29/2022] [Indexed: 12/12/2022] Open
Abstract
Accounting for cell type compositions has been very successful at analyzing high-throughput data from heterogeneous tissues. Differential gene expression analysis at cell type level is becoming increasingly popular, yielding biomarker discovery in a finer granularity within a particular cell type. Although several computational methods have been developed to identify cell type-specific differentially expressed genes (csDEG) from RNA-seq data, a systematic evaluation is yet to be performed. Here, we thoroughly benchmark six recently published methods: CellDMC, CARseq, TOAST, LRCDE, CeDAR and TCA, together with two classical methods, csSAM and DESeq2, for a comprehensive comparison. We aim to systematically evaluate the performance of popular csDEG detection methods and provide guidance to researchers. In simulation studies, we benchmark available methods under various scenarios of baseline expression levels, sample sizes, cell type compositions, expression level alterations, technical noises and biological dispersions. Real data analyses of three large datasets on inflammatory bowel disease, lung cancer and autism provide evaluation in both the gene level and the pathway level. We find that csDEG calling is strongly affected by effect size, baseline expression level and cell type compositions. Results imply that csDEG discovery is a challenging task itself, with room to improvements on handling low signal-to-noise ratio and low expression genes.
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Affiliation(s)
- Guanqun Meng
- Department of Population and Quantitative Health Sciences, Case Western Reserve University, Cleveland, 44106, Ohio, USA
| | - Wen Tang
- Department of Population and Quantitative Health Sciences, Case Western Reserve University, Cleveland, 44106, Ohio, USA
| | - Emina Huang
- Department of Surgery, The University of Texas Southwestern Medical Center, Dallas, 75390, Texas, USA
| | - Ziyi Li
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, 77030, Texas, USA
| | - Hao Feng
- Department of Population and Quantitative Health Sciences, Case Western Reserve University, Cleveland, 44106, Ohio, USA
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15
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Microglia in Cultured Porcine Retina: Qualitative Immunohistochemical Analyses of Reactive Microglia in the Outer Retina. Int J Mol Sci 2023; 24:ijms24010871. [PMID: 36614320 PMCID: PMC9820911 DOI: 10.3390/ijms24010871] [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] [Revised: 12/26/2022] [Accepted: 12/29/2022] [Indexed: 01/05/2023] Open
Abstract
A late stage of several retinal disorders is retinal detachment, a complication that results in rapid photoreceptor degeneration and synaptic damages. Experimental retinal detachment in vivo is an invasive and complicated method performed on anesthetized animals. As retinal detachment may result in visual impairment and blindness, research is of fundamental importance for understanding degenerative processes. Both morphological and ethical issues make the porcine retina a favorable organotypic model for studies of the degenerative processes that follow retinal detachment. In the cultured retina, photoreceptor degeneration and synaptic injuries develop rapidly and correlate with resident microglial cells' transition into a reactive phenotype. In this immunohistochemical study, we have begun to analyze the transition of subsets of reactive microglia which are known to localize close to the outer plexiform layer (OPL) in degenerating in vivo and in vitro retina. Biomarkers for reactive microglia included P2Ry12, CD63 and CD68 and the general microglial markers were CD11b, Iba1 and isolectin B4 (IB4). The reactive microglia markers labeled microglia subpopulations, suggesting that protective or harmful reactive microglia may be present simultaneously in the injured retina. Our findings support the usage of porcine retina cultures for studies of photoreceptor injuries related to retinal detachment.
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16
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Louie HH, Mugisho OO, Chamley LW, Rupenthal ID. Extracellular Vesicles as Biomarkers and Therapeutics for Inflammatory Eye Diseases. Mol Pharm 2023; 20:23-40. [PMID: 36332193 DOI: 10.1021/acs.molpharmaceut.2c00414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Extracellular vesicles (EVs) are a group of cell-derived membrane vesicles of varying sizes that can be secreted by most cells. Depending on the type of cell they are derived from, EVs may contain a variety of cargo including proteins, lipids, miRNA, and DNA. Functionally, EVs play important roles in physiological and pathological processes through intercellular communication. While there has already been significant literature on the involvement of EVs in neurological and cardiovascular disease as well as cancer, recent evidence suggests that EVs may also play a role in mediating inflammatory eye diseases. This paper summarizes current advancements in ocular EV research as well as new ways by which EVs may be utilized as novel biomarkers of or therapeutics for inflammatory eye diseases.
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Affiliation(s)
- Henry H Louie
- Buchanan Ocular Therapeutics Unit, Department of Ophthalmology, New Zealand National Eye Centre, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand.,Hub for Extracellular Vesicle Investigations, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Odunayo O Mugisho
- Buchanan Ocular Therapeutics Unit, Department of Ophthalmology, New Zealand National Eye Centre, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Lawrence W Chamley
- Hub for Extracellular Vesicle Investigations, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand.,Department of Obstetrics & Gynaecology, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Ilva D Rupenthal
- Buchanan Ocular Therapeutics Unit, Department of Ophthalmology, New Zealand National Eye Centre, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
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17
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Cioanca AV, Natoli R, Wooff Y. Proteomics of Retinal Extracellular Vesicles: A Review into an Unexplored Mechanism in Retinal Health and AMD Pathogenesis. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2023; 1415:87-94. [PMID: 37440019 DOI: 10.1007/978-3-031-27681-1_14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/14/2023]
Abstract
Extracellular vesicles (EV) are nanosized delivery vehicles that participate in cell-to-cell communication through the selective transfer of molecular materials including RNA, DNA, lipids, and proteins. In the retina, the role of EV proteins is largely unclear, in part due to the lack of studies and the depth of proteomic analyses of EV cargo. This review summarizes the existing knowledge on retinal EV proteins and provides a comparative reanalysis of existing retinal EV proteomic datasets. Collective findings highlight that in homeostasis, the protein components of neural retinal and RPE-derived EV largely reflect the function of the host cells, while in disease RPE-EV protein composition becomes altered, favoring inflammatory modulation and potentially contributing to drusen formation. While these studies shed light on the potential roles of EV proteins in the neural retina and RPE, it is clear that comprehensive proteomic and molecular studies are required, in particular using in vivo models of retinal degenerations.
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Affiliation(s)
- Adrian V Cioanca
- John Curtin School of Medical Research, The Australian National University, Canberra, ACT, Australia
- The School of Medicine and Psychology, The Australian National University, Canberra, ACT, Australia
| | - Riccardo Natoli
- John Curtin School of Medical Research, The Australian National University, Canberra, ACT, Australia
- The School of Medicine and Psychology, The Australian National University, Canberra, ACT, Australia
| | - Yvette Wooff
- John Curtin School of Medical Research, The Australian National University, Canberra, ACT, Australia.
- The School of Medicine and Psychology, The Australian National University, Canberra, ACT, Australia.
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18
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Aggio-Bruce R, Schumann U, Cioanca AV, Chen FK, McLenachan S, Heath Jeffery RC, Das S, Natoli R. Serum miRNA modulations indicate changes in retinal morphology. Front Mol Neurosci 2023; 16:1130249. [PMID: 36937046 PMCID: PMC10020626 DOI: 10.3389/fnmol.2023.1130249] [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: 12/23/2022] [Accepted: 02/13/2023] [Indexed: 03/06/2023] Open
Abstract
Background Age-related macular degeneration (AMD) is the leading cause of vision loss in the developed world and the detection of its onset and progression are based on retinal morphological assessments. MicroRNA (miRNA) have been explored extensively as biomarkers for a range of neurological diseases including AMD, however differences in experimental design and the complexity of human biology have resulted in little overlap between studies. Using preclinical animal models and clinical samples, this study employs a novel approach to determine a serum signature of AMD progression. Methods Serum miRNAs were extracted from mice exposed to photo-oxidative damage (PD; 0, 1, 3 and 5 days), and clinical samples from patients diagnosed with reticular pseudodrusen or atrophic AMD. The expression of ~800 miRNAs was measured using OpenArray™, and differential abundance from controls was determined using the HTqPCR R package followed by pathway analysis with DAVID. MiRNA expression changes were compared against quantifiable retinal histological indicators. Finally, the overlap of miRNA changes observed in the mouse model and human patient samples was investigated. Results Differential miRNA abundance was identified at all PD time-points and in clinical samples. Importantly, these were associated with inflammatory pathways and histological changes in the retina. Further, we were able to align findings in the mouse serum to those of clinical patients. Conclusion In conclusion, serum miRNAs are a valid tool as diagnostics for the early detection of retinal degeneration, as they reflect key changes in retinal health. The combination of pre-clinical animal models and human patient samples led to the identification of a preliminary serum miRNA signature for AMD. This study is an important platform for the future development of a diagnostic serum miRNA panel for the early detection of retinal degeneration.
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Affiliation(s)
- Riemke Aggio-Bruce
- The John Curtin School of Medical Research, The Australian National University, Acton, ACT, Australia
- The School of Medicine and Psychology, Acton, ACT, Australia
| | - Ulrike Schumann
- The John Curtin School of Medical Research, The Australian National University, Acton, ACT, Australia
- The Save Sight Institute, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, Australia
| | - Adrian V. Cioanca
- The John Curtin School of Medical Research, The Australian National University, Acton, ACT, Australia
| | - Fred K. Chen
- Centre of Ophthalmology and Visual Science, The University of Western Australia, Perth, WA, Australia
- Lions Eye Institute, Perth, WA, Australia
- Ophthalmology, Department of Surgery, University of Melbourne, East Melbourne, VIC, Australia
- Centre for Eye Research Australia, Royal Victorian Eye and Ear Hospital, East Melbourne, VIC, Australia
| | - Samuel McLenachan
- Centre of Ophthalmology and Visual Science, The University of Western Australia, Perth, WA, Australia
- Lions Eye Institute, Perth, WA, Australia
| | - Rachael C. Heath Jeffery
- Centre of Ophthalmology and Visual Science, The University of Western Australia, Perth, WA, Australia
- Lions Eye Institute, Perth, WA, Australia
- Centre for Eye Research Australia, Royal Victorian Eye and Ear Hospital, East Melbourne, VIC, Australia
| | - Shannon Das
- The John Curtin School of Medical Research, The Australian National University, Acton, ACT, Australia
| | - Riccardo Natoli
- The John Curtin School of Medical Research, The Australian National University, Acton, ACT, Australia
- The School of Medicine and Psychology, Acton, ACT, Australia
- *Correspondence: Riccardo Natoli,
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19
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Recent Advances in Proteomics-Based Approaches to Studying Age-Related Macular Degeneration: A Systematic Review. Int J Mol Sci 2022; 23:ijms232314759. [PMID: 36499086 PMCID: PMC9735888 DOI: 10.3390/ijms232314759] [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: 10/06/2022] [Revised: 11/17/2022] [Accepted: 11/22/2022] [Indexed: 11/29/2022] Open
Abstract
Age-related macular degeneration (AMD) is a common ocular disease characterized by degeneration of the central area of the retina in the elderly population. Progression and response to treatment are influenced by genetic and non-genetic factors. Proteomics is a powerful tool to study, at the molecular level, the mechanisms underlying the progression of the disease, to identify new therapeutic targets and to establish biomarkers to monitor progression and treatment effectiveness. In this work, we systematically review the use of proteomics-based approaches for the study of the molecular mechanisms underlying the development of AMD, as well as the progression of the disease and on-treatment patient monitoring. The Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) reporting guidelines were followed. Proteomic approaches have identified key players in the onset of the disease, such as complement components and proteins involved in lipid metabolism and oxidative stress, but also in the progression to advanced stages, including factors related to extracellular matrix integrity and angiogenesis. Although anti-vascular endothelial growth factor (anti-VEGF)-based therapy has been crucial in the treatment of neovascular AMD, it is necessary to deepen our understanding of the underlying disease mechanisms to move forward to next-generation therapies for later-stage forms of this multifactorial disease.
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20
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Demais V, Pohl A, Wunderlich KA, Pfaller AM, Kaplan L, Barthélémy A, Dittrich R, Puig B, Giebel B, Hauck SM, Pfrieger FW, Grosche A. Release of VAMP5-positive extracellular vesicles by retinal Müller glia in vivo. J Extracell Vesicles 2022; 11:e12254. [PMID: 36043482 PMCID: PMC9428896 DOI: 10.1002/jev2.12254] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 06/25/2022] [Accepted: 07/18/2022] [Indexed: 11/11/2022] Open
Abstract
Cell-cell interactions in the central nervous system are based on the release of molecules mediating signal exchange and providing structural and trophic support through vesicular exocytosis and the formation of extracellular vesicles. The specific mechanisms employed by each cell type in the brain are incompletely understood. Here, we explored the means of communication used by Müller cells, a type of radial glial cells in the retina, which forms part of the central nervous system. Using immunohistochemical, electron microscopic, and molecular analyses, we provide evidence for the release of distinct extracellular vesicles from endfeet and microvilli of retinal Müller cells in adult mice in vivo. We identify VAMP5 as a Müller cell-specific SNARE component that is part of extracellular vesicles and responsive to ischemia, and we reveal differences between the secretomes of immunoaffinity-purified Müller cells and neurons in vitro. Our findings suggest extracellular vesicle-based communication as an important mediator of cellular interactions in the retina.
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Affiliation(s)
- Valerie Demais
- Plateforme Imagerie In Vitro, CNRS UAR 3156, NeuropôleUniversity of StrasbourgStrasbourgFrance
| | - Anne Pohl
- Department of Physiological GenomicsBioMedical Center BMCLudwig‐Maximilian UniversityPlanegg‐MartinsriedGermany
- Institute of Human GeneticsUniversity of RegensburgRegensburgGermany
| | - Kirsten A. Wunderlich
- Department of Physiological GenomicsBioMedical Center BMCLudwig‐Maximilian UniversityPlanegg‐MartinsriedGermany
| | - Anna M. Pfaller
- Department of Physiological GenomicsBioMedical Center BMCLudwig‐Maximilian UniversityPlanegg‐MartinsriedGermany
| | - Lew Kaplan
- Department of Physiological GenomicsBioMedical Center BMCLudwig‐Maximilian UniversityPlanegg‐MartinsriedGermany
| | - Amelie Barthélémy
- Centre National de la Recherche ScientifiqueUniversité de StrasbourgInstitut des Neurosciences Cellulaires et IntégrativesStrasbourgFrance
| | - Robin Dittrich
- Institute for Transfusion MedicineUniversity Hospital EssenUniversity of Duisburg‐EssenEssenGermany
| | - Berta Puig
- Neurology DepartmentExperimental Research in Stroke and Inflammation (ERSI)University Medical Center Hamburg‐EppendorfHamburgGermany
| | - Bernd Giebel
- Institute for Transfusion MedicineUniversity Hospital EssenUniversity of Duisburg‐EssenEssenGermany
| | - Stefanie M. Hauck
- Metabolomics and Proteomics Core and Research Unit Protein ScienceHelmholtz‐Zentrum MünchenMünchenGermany
| | - Frank W. Pfrieger
- Plateforme Imagerie In Vitro, CNRS UAR 3156, NeuropôleUniversity of StrasbourgStrasbourgFrance
- Centre National de la Recherche ScientifiqueUniversité de StrasbourgInstitut des Neurosciences Cellulaires et IntégrativesStrasbourgFrance
| | - Antje Grosche
- Department of Physiological GenomicsBioMedical Center BMCLudwig‐Maximilian UniversityPlanegg‐MartinsriedGermany
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21
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Zhang J, Li P, Zhao G, He S, Xu D, Jiang W, Peng Q, Li Z, Xie Z, Zhang H, Xu Y, Qi L. Mesenchymal stem cell-derived extracellular vesicles protect retina in a mouse model of retinitis pigmentosa by anti-inflammation through miR-146a-Nr4a3 axis. Stem Cell Res Ther 2022; 13:394. [PMID: 35922863 PMCID: PMC9351183 DOI: 10.1186/s13287-022-03100-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Accepted: 07/27/2022] [Indexed: 11/10/2022] Open
Abstract
Background Retinitis pigmentosa is a rod-cone degenerative disease that induces irreversible vision loss. This study probed the protective capacity of mesenchymal stem cell-derived small EVs (MSC-EVs) on the retinas of rd10 mice and the underlying mechanism.
Methods MSC-EVs were injected into the vitreous of rd10 mice at postnatal day 14 and P21; morphology and function were examined at P28. The mechanism of action was explored by using co-culture of photoreceptor cell line 661 W and microglia cell line BV2.
Results Treatment with MSC-EVs increased the survival of photoreceptors and preserved their structure. Visual function, as reflected by optomotor and electroretinogram responses, was significantly enhanced in MSC-EVs-treated rd10 mice. Mechanistically, staining for Iba1, GFAP, F4/80, CD68 and CD206 showed that MSC-EVs suppressed the activation of microglial, Müller glial and macrophages. Furthermore, western blotting showed that the treatment inhibited the NF-κB pathway. RNA-seq and qPCR showed that MSC-EVs upregulated anti-inflammatory cytokines while downregulating pro-inflammatory cytokines. MSC-EVs application in vitro decreased the number of TUNEL-positive 661 W cells co-cultured with LPS-stimulated BV2, with similar impact on the cytokine expression as in vivo study. Genetic screening predicted miR-146a to be the downstream target of MSC-EVs, which was detected in MSC-EVs and upregulated in co-cultured 661 W cells and BV2 cells after MSC-EVs treatment. Upregulation of miR-146a by using its mimic decreased the expression of the transcription factor Nr4a3, and its downregulation inhibition promoted Nr4a3 expression in both 661 W and BV2 cells. Nr4a3 was further identified as the target gene of miR-146a by dual-luciferase assay. Furthermore, overexpressing miR-146a significantly decreased the expression of LPS-induced pro-inflammatory cytokines in BV2 cells. Conclusions MSC-EVs delays retinal degeneration in rd10 mice mainly by its anti-inflammatory effect via the miR-146a-Nr4a3axis. Hence, MSC-EVs may be used in the treatment of neurodegenerative diseases. Supplementary Information The online version contains supplementary material available at 10.1186/s13287-022-03100-x.
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Affiliation(s)
- Jia Zhang
- The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People's Hospital, B24 Yinquan South Road, Qingyuan, 511518, Guangdong, China
| | - Pengdong Li
- The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People's Hospital, B24 Yinquan South Road, Qingyuan, 511518, Guangdong, China.,The Key Laboratory of Pathobiology, Department of Pathology, College of Basic Medical Sciences, Jilin University, Ministry of Education, Changchun, 130021, China
| | - Guifang Zhao
- The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People's Hospital, B24 Yinquan South Road, Qingyuan, 511518, Guangdong, China
| | - Siqi He
- The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People's Hospital, B24 Yinquan South Road, Qingyuan, 511518, Guangdong, China.,College of Basic Medicine, Beihua University, Jilin City, 132013, Jilin, China
| | - Di Xu
- Guangdong-Hong Kong-Macau Institute of Central Nervous System Regeneration, Key Laboratory of Central Nervous System Regeneration, Ministry of Education, Jinan University, Guangzhou, 510632, China
| | - Weijie Jiang
- The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People's Hospital, B24 Yinquan South Road, Qingyuan, 511518, Guangdong, China.,School of Basic Medicine, Gannan Medical University, Ganzhou, 341000, China
| | - Qian Peng
- The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People's Hospital, B24 Yinquan South Road, Qingyuan, 511518, Guangdong, China
| | - Zhaohui Li
- The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People's Hospital, B24 Yinquan South Road, Qingyuan, 511518, Guangdong, China
| | - Zhongjian Xie
- Institute of Pediatrics, Shenzhen Children's Hospital, Shenzhen, 518038, China
| | - Han Zhang
- The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People's Hospital, B24 Yinquan South Road, Qingyuan, 511518, Guangdong, China.,Shenzhen Engineering Laboratory of Phosphorene and Optoelectronics, International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, Shenzhen University, Shenzhen, 518060, China
| | - Ying Xu
- Guangdong-Hong Kong-Macau Institute of Central Nervous System Regeneration, Key Laboratory of Central Nervous System Regeneration, Ministry of Education, Jinan University, Guangzhou, 510632, China.
| | - Ling Qi
- The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People's Hospital, B24 Yinquan South Road, Qingyuan, 511518, Guangdong, China.
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22
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Hadady H, Karamali F, Ejeian F, Soroushzadeh S, Nasr-Esfahani MH. Potential neuroprotective effect of stem cells from apical papilla derived extracellular vesicles enriched by lab-on-chip approach during retinal degeneration. Cell Mol Life Sci 2022; 79:350. [PMID: 35672609 PMCID: PMC11071776 DOI: 10.1007/s00018-022-04375-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 04/24/2022] [Accepted: 05/12/2022] [Indexed: 11/03/2022]
Abstract
Retinal degeneration (RD) is recognized as a frequent cause of visual impairments, including inherited (Retinitis pigmentosa) and degenerative (age-related macular) eye diseases. Dental stem cells (DSCs) have recently demonstrated a promising neuroprotection potential for ocular diseases through a paracrine manner carried out by extracellular vesicles (EVs). However, effective isolation of EVs is still challenging, and isolation methods determine the composition of enriched EVs and the subsequent biological and functional effects. In the present study, we assessed two enrichment methods (micro-electromechanical systems and ultrafiltration) to isolate the EVs from stem cells from apical papilla (SCAP). The size distribution of the corresponding isolates exhibited the capability of each method to enrich different subsets of EVs, which significantly impacts their biological and functional effects. We confirmed the neuroprotection and anti-inflammatory capacity of the SCAP-EVs in vitro. Further experiments revealed the possible therapeutic effects of subretinal injection of SCAP-EVs in the Royal College of Surgeons (RCS) rat model. We found that EVs enriched by the micro-electromechanical-based device (MEMS-EVs) preserved visual function, reduced retinal cell apoptosis, and prevented thinning of the outer nuclear layer (ONL). Interestingly, the effect of MEMS-EVs was extended to the retinal ganglion cell/retinal nerve fiber layer (GCL/RNFL). This study supports the use of the microfluidics approach to enrich valuable subsets of EVs, together with the choice of SCAP as a source to derive EVs for cell-free therapy of RD.
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Affiliation(s)
- Hanieh Hadady
- Department of Animal Biotechnology, Cell Science Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran
| | - Fereshteh Karamali
- Department of Animal Biotechnology, Cell Science Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran.
| | - Fatemeh Ejeian
- Department of Animal Biotechnology, Cell Science Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran
| | - Sareh Soroushzadeh
- Department of Animal Biotechnology, Cell Science Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran
| | - Mohammad Hossein Nasr-Esfahani
- Department of Animal Biotechnology, Cell Science Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran.
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23
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Li H, Su Y, Wang F, Tao F. Exosomes: a new way of protecting and regenerating optic nerve after injury. Hum Cell 2022; 35:771-778. [PMID: 35258808 DOI: 10.1007/s13577-022-00688-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 02/22/2022] [Indexed: 12/29/2022]
Abstract
As an important part of the central nervous system (CNS), the optic nerve usually cannot regenerate directly after injury. Therefore, treating the injury and restoring the function of the optic nerve are a historical problem in the medical field. Due to the special anatomical position of the optic nerve, the microenvironment needed for protection and regeneration after injury is lacking. Therefore, preventing the continued loss of neurons, protecting the functional nerves, and promoting the effective protection of nerves are the main ways to solve the problem. Exosomes are nano-sized vesicles with a diameter of 30-150 nm, composed of lipid bilayers, proteins, and genetic material. They have key functions in cell-to-cell communication, immune regulation, inflammation, and regeneration. More and more shreds of evidence show that exosomes not only play an important role in systemic diseases such as cancer, cardiovascular diseases, and brain diseases; they also play a key role in ophthalmological diseases. This article reviews the role of exosomes in the protection and regeneration of the optic nerve after optic nerve injury in related experimental studies and clinical treatment methods. GRAPHICAL ABSTARCT: .
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Affiliation(s)
- Huazhang Li
- Department of Ophthalmology, The Fourth Affiliated Hospital, Harbin Medical University, Harbin, 150001, China
| | - Ying Su
- Department of Ophthalmology, The First Affiliated Hospital, Harbin Medical University, Harbin, 150001, China.
| | - Feng Wang
- Department of Ophthalmology, The Fourth Affiliated Hospital, Harbin Medical University, Harbin, 150001, China.
| | - Feng Tao
- Department of Neurology, The Hospital of Heilongjiang Province, Harbin, 150001, China.
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24
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Liu Y, Yang Q, Fu H, Wang J, Yuan S, Li X, Xie P, Hu Z, Liu Q. Müller glia-derived exosomal miR-9-3p promotes angiogenesis by restricting sphingosine-1-phosphate receptor S1P 1 in diabetic retinopathy. MOLECULAR THERAPY. NUCLEIC ACIDS 2022; 27:491-504. [PMID: 35036060 PMCID: PMC8728524 DOI: 10.1016/j.omtn.2021.12.019] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Accepted: 12/15/2021] [Indexed: 02/08/2023]
Abstract
Diabetic retinopathy is a heterogeneous retinal degenerative disease with the microvascular dysfunction being recognized as a hallmark of the advanced stage. In this study, we demonstrated that exosomes collected from the vitreous humor of proliferative diabetic retinopathy patients promoted proliferation, migration and tube formation ability of primary human retinal endothelial cells via its elevated miR-9-3p expression level. Müller glia cells were further recognized as the sole source of the aberrantly expressed miR-9-3p, and both in vitro and in vivo experiments validated that Müller glia-derived exosomes aggravate vascular dysfunction under high glucose. Mechanistically, exosomal miRNA-9-3p was transferred to retinal endothelial cells and bound to the sphingosine-1-phosphate receptor S1P1 coding sequence, which subsequently activated VEGFR2 phosphorylation and internalization in the presence or absence of exogenous VEGF-A. We successfully orchestrated the dynamic crosstalk between retinal Müller glia cells and endothelial cells in pathological condition, which may provide a novel biomarker or promising therapeutic agents for the treatment of diabetic retinopathy.
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Affiliation(s)
- Yu Liu
- Department of Ophthalmology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Qin Yang
- Department of Ophthalmology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Haixin Fu
- Department of Ophthalmology, The Huai'an Hospital of Huai'an City, Huai'an 223200, China
| | - Jingfan Wang
- Department of Ophthalmology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Songtao Yuan
- Department of Ophthalmology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Xinsheng Li
- Department of Ophthalmology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Ping Xie
- Department of Ophthalmology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Zizhong Hu
- Department of Ophthalmology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Qinghuai Liu
- Department of Ophthalmology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
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25
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Bartley SC, Proctor MT, Xia H, Ho E, Kang DS, Schuster K, Bicca MA, Seckler HS, Viola KL, Patrie SM, Kelleher NL, De Mello FG, Klein WL. An Essential Role for Alzheimer’s-Linked Amyloid Beta Oligomers in Neurodevelopment: Transient Expression of Multiple Proteoforms during Retina Histogenesis. Int J Mol Sci 2022; 23:ijms23042208. [PMID: 35216328 PMCID: PMC8875314 DOI: 10.3390/ijms23042208] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 02/11/2022] [Accepted: 02/14/2022] [Indexed: 12/04/2022] Open
Abstract
Human amyloid beta peptide (Aβ) is a brain catabolite that at nanomolar concentrations can form neurotoxic oligomers (AβOs), which are known to accumulate in Alzheimer’s disease. Because a predisposition to form neurotoxins seems surprising, we have investigated whether circumstances might exist where AβO accumulation may in fact be beneficial. Our investigation focused on the embryonic chick retina, which expresses the same Aβ as humans. Using conformation-selective antibodies, immunoblots, mass spectrometry, and fluorescence microscopy, we discovered that AβOs are indeed present in the developing retina, where multiple proteoforms are expressed in a highly regulated cell-specific manner. The expression of the AβO proteoforms was selectively associated with transiently expressed phosphorylated Tau (pTau) proteoforms that, like AβOs, are linked to Alzheimer’s disease (AD). To test whether the AβOs were functional in development, embryos were cultured ex ovo and then injected intravitreally with either a beta-site APP-cleaving enzyme 1 (BACE-1) inhibitor or an AβO-selective antibody to prematurely lower the levels of AβOs. The consequence was disrupted histogenesis resulting in dysplasia resembling that seen in various retina pathologies. We suggest the hypothesis that embryonic AβOs are a new type of short-lived peptidergic hormone with a role in neural development. Such a role could help explain why a peptide that manifests deleterious gain-of-function activity when it oligomerizes in the aging brain has been evolutionarily conserved.
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Affiliation(s)
- Samuel C. Bartley
- Department of Neurobiology, Northwestern University, Evanston, IL 60208, USA; (S.C.B.); (M.T.P.); (H.X.); (E.H.); (D.S.K.); (K.S.); (M.A.B.); (K.L.V.)
| | - Madison T. Proctor
- Department of Neurobiology, Northwestern University, Evanston, IL 60208, USA; (S.C.B.); (M.T.P.); (H.X.); (E.H.); (D.S.K.); (K.S.); (M.A.B.); (K.L.V.)
| | - Hongjie Xia
- Department of Neurobiology, Northwestern University, Evanston, IL 60208, USA; (S.C.B.); (M.T.P.); (H.X.); (E.H.); (D.S.K.); (K.S.); (M.A.B.); (K.L.V.)
| | - Evelyn Ho
- Department of Neurobiology, Northwestern University, Evanston, IL 60208, USA; (S.C.B.); (M.T.P.); (H.X.); (E.H.); (D.S.K.); (K.S.); (M.A.B.); (K.L.V.)
| | - Dong S. Kang
- Department of Neurobiology, Northwestern University, Evanston, IL 60208, USA; (S.C.B.); (M.T.P.); (H.X.); (E.H.); (D.S.K.); (K.S.); (M.A.B.); (K.L.V.)
| | - Kristen Schuster
- Department of Neurobiology, Northwestern University, Evanston, IL 60208, USA; (S.C.B.); (M.T.P.); (H.X.); (E.H.); (D.S.K.); (K.S.); (M.A.B.); (K.L.V.)
| | - Maíra A. Bicca
- Department of Neurobiology, Northwestern University, Evanston, IL 60208, USA; (S.C.B.); (M.T.P.); (H.X.); (E.H.); (D.S.K.); (K.S.); (M.A.B.); (K.L.V.)
| | - Henrique S. Seckler
- Department of Chemistry, Northwestern University, Evanston, IL 60208, USA; (H.S.S.); (S.M.P.)
| | - Kirsten L. Viola
- Department of Neurobiology, Northwestern University, Evanston, IL 60208, USA; (S.C.B.); (M.T.P.); (H.X.); (E.H.); (D.S.K.); (K.S.); (M.A.B.); (K.L.V.)
| | - Steven M. Patrie
- Department of Chemistry, Northwestern University, Evanston, IL 60208, USA; (H.S.S.); (S.M.P.)
| | - Neil L. Kelleher
- Department of Molecular Biosciences, Northwestern University, Evanston, IL 60208, USA;
| | - Fernando G. De Mello
- Instituto de Biofísica Carlos Chagas Filho (IBCCF), Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, Brazil;
| | - William L. Klein
- Department of Neurobiology, Northwestern University, Evanston, IL 60208, USA; (S.C.B.); (M.T.P.); (H.X.); (E.H.); (D.S.K.); (K.S.); (M.A.B.); (K.L.V.)
- Mesulam Center for Cognitive Neurology and Alzheimer’s Disease, Northwestern University, Chicago, IL 60611, USA
- Correspondence: ; Tel.: +1-847-591-5510
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26
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Wohl SG. View on microRNAs as a potential tool to fight blindness: focus on Müller glia and gliosis. Neural Regen Res 2021; 17:1501-1502. [PMID: 34916433 PMCID: PMC8771108 DOI: 10.4103/1673-5374.330610] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Affiliation(s)
- Stefanie Gabriele Wohl
- The State University of New York, College of Optometry, Department of Biological and Vision Sciences, New York, NY, USA
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27
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Liu S, Miyaji M, Hosoya O, Matsuo T. Effect of NK-5962 on Gene Expression Profiling of Retina in a Rat Model of Retinitis Pigmentosa. Int J Mol Sci 2021; 22:ijms222413276. [PMID: 34948073 PMCID: PMC8703378 DOI: 10.3390/ijms222413276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 12/03/2021] [Accepted: 12/06/2021] [Indexed: 11/18/2022] Open
Abstract
Purpose: NK-5962 is a key component of photoelectric dye-coupled polyethylene film, designated Okayama University type-retinal prosthesis (OUReP™). Previously, we found that NK-5962 solution could reduce the number of apoptotic photoreceptors in the eyes of the Royal College of Surgeons (RCS) rats by intravitreal injection under a 12 h light/dark cycle. This study aimed to explore possible molecular mechanisms underlying the anti-apoptotic effect of NK-5962 in the retina of RCS rats. Methods: RCS rats received intravitreal injections of NK-5962 solution in the left eye at the age of 3 and 4 weeks, before the age of 5 weeks when the speed in the apoptotic degeneration of photoreceptors reaches its peak. The vehicle-treated right eyes served as controls. All rats were housed under a 12 h light/dark cycle, and the retinas were dissected out at the age of 5 weeks for RNA sequence (RNA-seq) analysis. For the functional annotation of differentially expressed genes (DEGs), the Metascape and DAVID databases were used. Results: In total, 55 up-regulated DEGs, and one down-regulated gene (LYVE1) were found to be common among samples treated with NK-5962. These DEGs were analyzed using Gene Ontology (GO) term enrichment, Kyoto Encyclopedia of Genes and Genomes (KEGG), and Reactome pathway analyses. We focused on the up-regulated DEGs that were enriched in extracellular matrix organization, extracellular exosome, and PI3K–Akt signaling pathways. These terms and pathways may relate to mechanisms to protect photoreceptor cells. Moreover, our analyses suggest that SERPINF1, which encodes pigment epithelium-derived factor (PEDF), is one of the key regulatory genes involved in the anti-apoptotic effect of NK-5962 in RCS rat retinas. Conclusions: Our findings suggest that photoelectric dye NK-5962 may delay apoptotic death of photoreceptor cells in RCS rats by up-regulating genes related to extracellular matrix organization, extracellular exosome, and PI3K–Akt signaling pathways. Overall, our RNA-seq and bioinformatics analyses provide insights in the transcriptome responses in the dystrophic RCS rat retinas that were induced by NK-5962 intravitreal injection and offer potential target genes for developing new therapeutic strategies for patients with retinitis pigmentosa.
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Affiliation(s)
- Shihui Liu
- Department of Ophthalmology, Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University, Okayama City 700-8558, Japan;
| | - Mary Miyaji
- Department of Medical Neurobiology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama City 700-8558, Japan; (M.M.); (O.H.)
| | - Osamu Hosoya
- Department of Medical Neurobiology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama City 700-8558, Japan; (M.M.); (O.H.)
| | - Toshihiko Matsuo
- Department of Ophthalmology, Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University, Okayama City 700-8558, Japan;
- Correspondence:
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28
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Chu-Tan JA, Kirkby M, Natoli R. Running to save sight: The effects of exercise on retinal health and function. Clin Exp Ophthalmol 2021; 50:74-90. [PMID: 34741489 DOI: 10.1111/ceo.14023] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 11/02/2021] [Accepted: 11/02/2021] [Indexed: 12/29/2022]
Abstract
The benefits of exercise to human health have long been recognised. However, only in the past decade have researchers started to discover the molecular benefits that exercise confers, especially to the central nervous system (CNS). These discoveries include the magnitude of molecular messages that are communicated from skeletal muscle to the CNS. Despite these advances in understanding, very limited studies have been conducted to decipher the molecular benefits of exercise in retinal health and disease. Here, we review the latest work on the effects of exercise on the retina and discuss its effects on the wider CNS, with a focus on demonstrating the potential applicability and comparative molecular mechanisms that may be occurring in the retina. This review covers the key molecular pathways where exercise exerts its effects: oxidative stress and mitochondrial health; inflammation; protein aggregation; neuronal health; and tissue crosstalk via extracellular vesicles. Further research on the benefits of exercise to the retina and its molecular messages within extracellular vesicles is highly topical in this field.
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Affiliation(s)
- Joshua A Chu-Tan
- The John Curtin School of Medical Research, The Australian National University, Acton, Australia.,The Australian National University Medical School, The Australian National University, Acton, Australia
| | - Max Kirkby
- The John Curtin School of Medical Research, The Australian National University, Acton, Australia
| | - Riccardo Natoli
- The John Curtin School of Medical Research, The Australian National University, Acton, Australia.,The Australian National University Medical School, The Australian National University, Acton, Australia
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29
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Chu-Tan JA, Cioanca AV, Feng ZP, Wooff Y, Schumann U, Aggio-Bruce R, Patel H, Rutar M, Hannan K, Panov K, Provis J, Natoli R. Functional microRNA targetome undergoes degeneration-induced shift in the retina. Mol Neurodegener 2021; 16:60. [PMID: 34465369 PMCID: PMC8406976 DOI: 10.1186/s13024-021-00478-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Accepted: 08/03/2021] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND MicroRNA (miRNA) play a significant role in the pathogenesis of complex neurodegenerative diseases including age-related macular degeneration (AMD), acting as post-transcriptional gene suppressors through their association with argonaute 2 (AGO2) - a key member of the RNA Induced Silencing Complex (RISC). Identifying the retinal miRNA/mRNA interactions in health and disease will provide important insight into the key pathways miRNA regulate in disease pathogenesis and may lead to potential therapeutic targets to mediate retinal degeneration. METHODS To identify the active miRnome targetome interactions in the healthy and degenerating retina, AGO2 HITS-CLIP was performed using a rodent model of photoreceptor degeneration. Analysis of publicly available single-cell RNA sequencing (scRNAseq) data was performed to identify the cellular location of AGO2 and key members of the microRNA targetome in the retina. AGO2 findings were verified by in situ hybridization (RNA) and immunohistochemistry (protein). RESULTS Analysis revealed a similar miRnome between healthy and damaged retinas, however, a shift in the active targetome was observed with an enrichment of miRNA involvement in inflammatory pathways. This shift was further demonstrated by a change in the seed binding regions of miR-124-3p, the most abundant retinal AGO2-bound miRNA, and has known roles in regulating retinal inflammation. Additionally, photoreceptor cluster miR-183/96/182 were all among the most highly abundant miRNA bound to AGO2. Following damage, AGO2 expression was localized to the inner retinal layers and more in the OLM than in healthy retinas, indicating a locational miRNA response to retinal damage. CONCLUSIONS This study provides important insight into the alteration of miRNA regulatory activity that occurs as a response to retinal degeneration and explores the miRNA-mRNA targetome as a consequence of retinal degenerations. Further characterisation of these miRNA/mRNA interactions in the context of the degenerating retina may provide an important insight into the active role these miRNA may play in diseases such as AMD.
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Affiliation(s)
- Joshua A. Chu-Tan
- Eccles Institute of Neuroscience, The John Curtin School of Medical Research, College of Health and Medicine, The Australian National University, Acton, Canberra, ACT 2601 Australia
- The Australian National University Medical School, College of Health and Medicine, Canberra, ACT 2601 Australia
| | - Adrian V. Cioanca
- Eccles Institute of Neuroscience, The John Curtin School of Medical Research, College of Health and Medicine, The Australian National University, Acton, Canberra, ACT 2601 Australia
| | - Zhi-Ping Feng
- The ANU Bioinformatics Consultancy, The John Curtin School of Medical Research, College of Health and Medicine, The Australian National University, Acton, Canberra, ACT 2601 Australia
| | - Yvette Wooff
- Eccles Institute of Neuroscience, The John Curtin School of Medical Research, College of Health and Medicine, The Australian National University, Acton, Canberra, ACT 2601 Australia
- The Australian National University Medical School, College of Health and Medicine, Canberra, ACT 2601 Australia
| | - Ulrike Schumann
- Eccles Institute of Neuroscience, The John Curtin School of Medical Research, College of Health and Medicine, The Australian National University, Acton, Canberra, ACT 2601 Australia
| | - Riemke Aggio-Bruce
- Eccles Institute of Neuroscience, The John Curtin School of Medical Research, College of Health and Medicine, The Australian National University, Acton, Canberra, ACT 2601 Australia
- The Australian National University Medical School, College of Health and Medicine, Canberra, ACT 2601 Australia
| | - Hardip Patel
- The ANU Bioinformatics Consultancy, The John Curtin School of Medical Research, College of Health and Medicine, The Australian National University, Acton, Canberra, ACT 2601 Australia
| | - Matt Rutar
- School of Biomedical Sciences, The University of Melbourne, Parkville, Victoria 3010 Australia
- Faculty of Science and Technology, University of Canberra, Bruce, ACT 2617 Australia
| | - Katherine Hannan
- ACRF Department of Cancer Biology and Therapeutics, The John Curtin School of Medical Research, College of Health and Medicine, The Australian National University, Acton, Canberra, ACT 2601 Australia
| | - Konstantin Panov
- School of Biological Sciences Queen’s University Belfast, Belfast, BT9 5DL Northern Ireland
| | - Jan Provis
- Eccles Institute of Neuroscience, The John Curtin School of Medical Research, College of Health and Medicine, The Australian National University, Acton, Canberra, ACT 2601 Australia
- The Australian National University Medical School, College of Health and Medicine, Canberra, ACT 2601 Australia
| | - Riccardo Natoli
- Eccles Institute of Neuroscience, The John Curtin School of Medical Research, College of Health and Medicine, The Australian National University, Acton, Canberra, ACT 2601 Australia
- The Australian National University Medical School, College of Health and Medicine, Canberra, ACT 2601 Australia
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30
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Zhang Z, Mugisha A, Fransisca S, Liu Q, Xie P, Hu Z. Emerging Role of Exosomes in Retinal Diseases. Front Cell Dev Biol 2021; 9:643680. [PMID: 33869195 PMCID: PMC8049503 DOI: 10.3389/fcell.2021.643680] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 03/05/2021] [Indexed: 12/12/2022] Open
Abstract
Retinal diseases, the leading causes of vison loss and blindness, are associated with complicated pathogeneses such as angiogenesis, inflammation, immune regulation, fibrous proliferation, and neurodegeneration. The retina is a complex tissue, where the various resident cell types communicate between themselves and with cells from the blood and immune systems. Exosomes, which are bilayer membrane vesicles with diameters of 30–150 nm, carry a variety of proteins, lipids, and nucleic acids, and participate in cell-to-cell communication. Recently, the roles of exosomes in pathophysiological process and their therapeutic potential have been emerging. Here, we critically review the roles of exosomes as possible intracellular mediators and discuss the possibility of using exosomes as therapeutic agents in retinal diseases.
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Affiliation(s)
- Zhengyu Zhang
- Department of Ophthalmology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Aime Mugisha
- Department of Ophthalmology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Silvia Fransisca
- Department of Ophthalmology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Qinghuai Liu
- Department of Ophthalmology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Ping Xie
- Department of Ophthalmology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Zizhong Hu
- Department of Ophthalmology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
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31
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Cioanca AV, Wu C(S, Natoli R, Conway RM, McCluskey PJ, Jager MJ, Sitiwin EI, Eamegdool SS, Madigan MC. The role of melanocytes in the human choroidal microenvironment and inflammation: Insights from the transcriptome. Pigment Cell Melanoma Res 2021; 34:928-945. [DOI: 10.1111/pcmr.12972] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 02/22/2021] [Accepted: 03/13/2021] [Indexed: 12/23/2022]
Affiliation(s)
- Adrian V. Cioanca
- John Curtin School of Medical Research The Australian National University Canberra ACT Australia
| | - Chieh‐Lin (Stanley) Wu
- School of Optometry and Vision Science University of NSW Sydney NSW Australia
- Save Sight Institute University of Sydney Sydney NSW Australia
| | - Riccardo Natoli
- John Curtin School of Medical Research The Australian National University Canberra ACT Australia
| | - R. Max Conway
- Save Sight Institute University of Sydney Sydney NSW Australia
| | | | - Martine J Jager
- Department of Ophthalmology Leiden University Medical Center Leiden The Netherlands
| | | | - Steven S. Eamegdool
- Save Sight Institute University of Sydney Sydney NSW Australia
- Eye Genetics Research Unit Children’s Medical Research Institute Westmead Hospital Westmead NSW Australia
| | - Michele C. Madigan
- School of Optometry and Vision Science University of NSW Sydney NSW Australia
- Save Sight Institute University of Sydney Sydney NSW Australia
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Tallon C, Hollinger KR, Pal A, Bell BJ, Rais R, Tsukamoto T, Witwer KW, Haughey NJ, Slusher BS. Nipping disease in the bud: nSMase2 inhibitors as therapeutics in extracellular vesicle-mediated diseases. Drug Discov Today 2021; 26:1656-1668. [PMID: 33798648 DOI: 10.1016/j.drudis.2021.03.025] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Revised: 03/04/2021] [Accepted: 03/24/2021] [Indexed: 12/11/2022]
Abstract
Extracellular vesicles (EVs) are indispensable mediators of intercellular communication, but they can also assume a nefarious role by ferrying pathological cargo that contributes to neurological, oncological, inflammatory, and infectious diseases. The canonical pathway for generating EVs involves the endosomal sorting complexes required for transport (ESCRT) machinery, but an alternative pathway is induced by the enrichment of lipid membrane ceramides generated by neutral sphingomyelinase 2 (nSMase2). Inhibition of nSMase2 has become an attractive therapeutic strategy for inhibiting EV biogenesis, and a growing number of small-molecule nSMase2 inhibitors have shown promising therapeutic activity in preclinical disease models. This review outlines the function of EVs, their potential role in disease, the discovery and efficacy of nSMase2 inhibitors, and the path to translate these findings into therapeutics.
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Affiliation(s)
- Carolyn Tallon
- Johns Hopkins Drug Discovery, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Kristen R Hollinger
- Johns Hopkins Drug Discovery, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Arindom Pal
- Johns Hopkins Drug Discovery, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Benjamin J Bell
- Johns Hopkins Drug Discovery, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Rana Rais
- Johns Hopkins Drug Discovery, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Takashi Tsukamoto
- Johns Hopkins Drug Discovery, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Kenneth W Witwer
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Department of Molecular and Comparative Pathobiology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Norman J Haughey
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Department of Psychiatry and Behavioral Science, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Barbara S Slusher
- Johns Hopkins Drug Discovery, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Department of Psychiatry and Behavioral Science, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Department of Pharmacology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.
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Berlanga-Acosta J, Fernández-Mayola M, Mendoza-Marí Y, García-Ojalvo A, Playford RJ, Guillen-Nieto G. Intralesional Infiltrations of Cell-Free Filtrates Derived from Human Diabetic Tissues Delay the Healing Process and Recreate Diabetes Histopathological Changes in Healthy Rats. FRONTIERS IN CLINICAL DIABETES AND HEALTHCARE 2021; 2:617741. [PMID: 36994347 PMCID: PMC10012095 DOI: 10.3389/fcdhc.2021.617741] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Accepted: 03/03/2021] [Indexed: 12/22/2022]
Abstract
Lower limb ulcers in type-2 diabetic patients are a frequent complication that tributes to amputation and reduces survival. We hypothesized that diabetic healing impairment and other histopathologic hallmarks are mediated by a T2DM-induced tissue priming/metabolic memory that can be transferred from humans to healthy recipient animals and consequently reproduce diabetic donor’s phenotypes. We examined the effect of human T2DM tissue homogenates injected into non-diabetic rat excisional wounds. Fresh granulation tissue, popliteal artery, and peroneal nerve of patients with T2DM were obtained following amputation. Post-mammoplasty granulation and post-traumatic amputation-tissue of normal subjects acted as controls. The homogenates were intralesionally injected for 6–7 days into rats’ excisional thickness wounds. Infiltration with the different homogenates caused impaired wound closure, inflammation, nerve degeneration, and arterial thickening (all P < 0.01 vs relevant control) resembling histopathology of diabetic donor tissues. Control materials caused marginal inflammation only. Infiltration with glycated bovine albumin provoked inflammation and wound healing delay but did not induce arterial thickening. The reproduction of human diabetic traits in healthy recipient animals through a tissue homogenate support the notion on the existence of tissue metabolic memory-associated and transmissible factors, involved in the pathogenesis of diabetic complications. These may have futuristic clinical implications for medical interventions.
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Affiliation(s)
- Jorge Berlanga-Acosta
- Tissue Repair, Wound Healing and Cytoprotection Research Group, Biomedical Research Direction, Center for Genetic Engineering and Biotechnology, Playa, Cuba
- *Correspondence: Jorge Berlanga-Acosta,
| | - Maday Fernández-Mayola
- Tissue Repair, Wound Healing and Cytoprotection Research Group, Biomedical Research Direction, Center for Genetic Engineering and Biotechnology, Playa, Cuba
| | - Yssel Mendoza-Marí
- Tissue Repair, Wound Healing and Cytoprotection Research Group, Biomedical Research Direction, Center for Genetic Engineering and Biotechnology, Playa, Cuba
| | - Ariana García-Ojalvo
- Tissue Repair, Wound Healing and Cytoprotection Research Group, Biomedical Research Direction, Center for Genetic Engineering and Biotechnology, Playa, Cuba
| | - Raymond J. Playford
- Centre for Immunobiology, Blizard Institute, Barts and The London School of Medicine, Queen Mary University of London, London, United Kingdom
| | - Gerardo Guillen-Nieto
- Tissue Repair, Wound Healing and Cytoprotection Research Group, Biomedical Research Direction, Center for Genetic Engineering and Biotechnology, Playa, Cuba
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Zhao S, Sheng S, Wang Y, Ding L, Xu X, Xia X, Zheng JC. Astrocyte-derived extracellular vesicles: A double-edged sword in central nervous system disorders. Neurosci Biobehav Rev 2021; 125:148-159. [PMID: 33626395 DOI: 10.1016/j.neubiorev.2021.02.027] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 12/28/2020] [Accepted: 02/16/2021] [Indexed: 12/14/2022]
Abstract
Recent studies suggest that astrocytes released a great quantity of extracellular vesicles (AEVs) to communicate with other brain cells. Under pathological conditions, AEVs are widely associated with the pathogenesis of neurobiological diseases by horizontally transferring pathogenic factors to neighboring cells or peripheral immune cells. Their beneficial role is also evident by the fact that they are involved in neuroprotection and neuroregeneration through alleviating apoptosis, maintaining neuronal function, and repairing neural injuries. The strong association of AEVswith neurological disorders makes AEVs a promising target for disease diagnosis, treatment, and prevention. The identification of disease-specific cargos in AEVs isolated from the patients' biofluids suggests AEVs as an attractive platform for biomarker development. Furthermore, the inhibition of inflammatory/toxic AEV release and the preservation of neuroprotective AEV release have been considered as potential therapeutic strategies in CNS disorder treatment and prevention, respectively. Here, we summarize the biological roles of AEVs as pathological contributors, protective/regenerative factors, and potential diagnostic biomarkers and therapeutic targets for neurological disorders, with a focus on recent progresses and emerging concepts.
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Affiliation(s)
- Shu Zhao
- Center for Translational Neurodegeneration and Regenerative Therapy, Shanghai Tenth People's Hospital affiliated to Tongji University School of Medicine, Shanghai 200072, China
| | - Shiyang Sheng
- Center for Translational Neurodegeneration and Regenerative Therapy, Shanghai Tenth People's Hospital affiliated to Tongji University School of Medicine, Shanghai 200072, China
| | - Yi Wang
- Center for Translational Neurodegeneration and Regenerative Therapy, Shanghai Tenth People's Hospital affiliated to Tongji University School of Medicine, Shanghai 200072, China
| | - Lu Ding
- Center for Translational Neurodegeneration and Regenerative Therapy, Shanghai Tenth People's Hospital affiliated to Tongji University School of Medicine, Shanghai 200072, China
| | - Xiaonan Xu
- Center for Translational Neurodegeneration and Regenerative Therapy, Shanghai Tenth People's Hospital affiliated to Tongji University School of Medicine, Shanghai 200072, China
| | - Xiaohuan Xia
- Center for Translational Neurodegeneration and Regenerative Therapy, Shanghai Tenth People's Hospital affiliated to Tongji University School of Medicine, Shanghai 200072, China; Translational Research Institute of Brain and Brain-Like Intelligence, Shanghai Fourth People's Hospital affiliated to Tongji University School of Medicine, Shanghai 200434, China.
| | - Jialin C Zheng
- Center for Translational Neurodegeneration and Regenerative Therapy, Shanghai Tenth People's Hospital affiliated to Tongji University School of Medicine, Shanghai 200072, China; Translational Research Institute of Brain and Brain-Like Intelligence, Shanghai Fourth People's Hospital affiliated to Tongji University School of Medicine, Shanghai 200434, China; Collaborative Innovation Center for Brain Science, Tongji University, Shanghai 200092, China; Departments of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68198-5930, USA.
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Pishavar E, Luo H, Bolander J, Atala A, Ramakrishna S. Nanocarriers, Progenitor Cells, Combinational Approaches, and New Insights on the Retinal Therapy. Int J Mol Sci 2021; 22:1776. [PMID: 33579019 PMCID: PMC7916765 DOI: 10.3390/ijms22041776] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 02/04/2021] [Accepted: 02/08/2021] [Indexed: 12/19/2022] Open
Abstract
Progenitor cells derived from the retinal pigment epithelium (RPECs) have shown promise as therapeutic approaches to degenerative retinal disorders including diabetic retinopathy, age-related macular degeneration and Stargardt disease. However, the degeneration of Bruch's membrane (BM), the natural substrate for the RPE, has been identified as one of the major limitations for utilizing RPECs. This degeneration leads to decreased support, survival and integration of the transplanted RPECs. It has been proposed that the generation of organized structures of nanofibers, in an attempt to mimic the natural retinal extracellular matrix (ECM) and its unique characteristics, could be utilized to overcome these limitations. Furthermore, nanoparticles could be incorporated to provide a platform for improved drug delivery and sustained release of molecules over several months to years. In addition, the incorporation of tissue-specific genes and stem cells into the nanostructures increased the stability and enhanced transfection efficiency of gene/drug to the posterior segment of the eye. This review discusses available drug delivery systems and combination therapies together with challenges associated with each approach. As the last step, we discuss the application of nanofibrous scaffolds for the implantation of RPE progenitor cells with the aim to enhance cell adhesion and support a functionally polarized RPE monolayer.
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Affiliation(s)
- Elham Pishavar
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad 91735, Iran;
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC 27157, USA;
| | - Hongrong Luo
- Engineering Research Center in Biomaterials, Sichuan University, Chengdu 610064, China;
| | - Johanna Bolander
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC 27157, USA;
| | - Antony Atala
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC 27157, USA;
| | - Seeram Ramakrishna
- Center for Nanofibers and Nanotechnology, National University of Singapore, Singapore 117581, Singapore
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Kang S, Larbi D, Andrade M, Reardon S, Reh TA, Wohl SG. A Comparative Analysis of Reactive Müller Glia Gene Expression After Light Damage and microRNA-Depleted Müller Glia-Focus on microRNAs. Front Cell Dev Biol 2021; 8:620459. [PMID: 33614628 PMCID: PMC7891663 DOI: 10.3389/fcell.2020.620459] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Accepted: 12/18/2020] [Indexed: 12/12/2022] Open
Abstract
Müller glia (MG) are the predominant glia in the neural retina and become reactive after injury or in disease. microRNAs (miRNAs) are translational repressors that regulate a variety of processes during development and are required for MG function. However, no data is available about the MG miRNAs in reactive gliosis. Therefore, in this study, we aimed to profile miRNAs and mRNAs in reactive MG 7 days after light damage. Light damage was performed for 8 h at 10,000 lux; this leads to rapid neuronal loss and strong MG reactivity. miRNAs were profiled using the Nanostring platform, gene expression analysis was conducted via microarray. We compared the light damage dataset with the dataset of Dicer deleted MG in order to find similarities and differences. We found: (1) The vast majority of MG miRNAs declined in reactive MG 7 days after light damage. (2) Only four miRNAs increased after light damage, which included miR-124. (3) The top 10 genes found upregulated in reactive MG after light damage include Gfap, Serpina3n, Ednrb and Cxcl10. (4) The miRNA decrease in reactive MG 7 days after injury resembles the profile of Dicer-depleted MG after one month. (5) The comparison of both mRNA expression datasets (light damage and Dicer-cKO) showed 1,502 genes were expressed under both conditions, with Maff , Egr2, Gadd45b, and Atf3 as top upregulated candidates. (6) The DIANA-TarBase v.8 miRNA:RNA interaction tool showed that three miRNAs were found to be present in all networks, i.e., after light damage, and in the combined data set; these were miR-125b-5p, let-7b and let-7c. Taken together, results show there is an overlap of gene regulatory events that occur in reactive MG after light damage (direct damage of neurons) and miRNA-depleted MG (Dicer-cKO), two very different paradigms. This suggests that MG miRNAs play an important role in a ubiquitous MG stress response and manipulating these miRNAs could be a first step to attenuate gliosis.
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Affiliation(s)
- Seoyoung Kang
- Department of Biological and Vision Sciences, College of Optometry, The State University of New York, New York, NY, United States
| | - Daniel Larbi
- Department of Biological and Vision Sciences, College of Optometry, The State University of New York, New York, NY, United States
| | - Monica Andrade
- Department of Biological and Vision Sciences, College of Optometry, The State University of New York, New York, NY, United States
| | - Sara Reardon
- Department of Biological Structure, School of Medicine, University of Washington, Seattle, WA, United States
| | - Thomas A. Reh
- Department of Biological Structure, School of Medicine, University of Washington, Seattle, WA, United States
| | - Stefanie G. Wohl
- Department of Biological and Vision Sciences, College of Optometry, The State University of New York, New York, NY, United States
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Carrella S, Banfi S, Karali M. Sophisticated Gene Regulation for a Complex Physiological System: The Role of Non-coding RNAs in Photoreceptor Cells. Front Cell Dev Biol 2021; 8:629158. [PMID: 33537317 PMCID: PMC7848107 DOI: 10.3389/fcell.2020.629158] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Accepted: 12/18/2020] [Indexed: 12/26/2022] Open
Abstract
Photoreceptors (PRs) are specialized neuroepithelial cells of the retina responsible for sensory transduction of light stimuli. In the highly structured vertebrate retina, PRs have a highly polarized modular structure to accommodate the demanding processes of phototransduction and the visual cycle. Because of their function, PRs are exposed to continuous cellular stress. PRs are therefore under pressure to maintain their function in defiance of constant environmental perturbation, besides being part of a highly sophisticated developmental process. All this translates into the need for tightly regulated and responsive molecular mechanisms that can reinforce transcriptional programs. It is commonly accepted that regulatory non-coding RNAs (ncRNAs), and in particular microRNAs (miRNAs), are not only involved but indeed central in conferring robustness and accuracy to developmental and physiological processes. Here we integrate recent findings on the role of regulatory ncRNAs (e.g., miRNAs, lncRNAs, circular RNAs, and antisense RNAs), and of their contribution to PR pathophysiology. We also outline the therapeutic implications of translational studies that harness ncRNAs to prevent PR degeneration and promote their survival and function.
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Affiliation(s)
- Sabrina Carrella
- Telethon Institute of Genetics and Medicine (TIGEM), Pozzuoli, Italy.,Medical Genetics, Department of Precision Medicine, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Sandro Banfi
- Telethon Institute of Genetics and Medicine (TIGEM), Pozzuoli, Italy.,Medical Genetics, Department of Precision Medicine, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Marianthi Karali
- Telethon Institute of Genetics and Medicine (TIGEM), Pozzuoli, Italy.,Eye Clinic, Multidisciplinary Department of Medical, Surgical and Dental Sciences, University of Campania "Luigi Vanvitelli", Naples, Italy
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