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Rejas-González R, Montero-Calle A, Valverde A, Salvador NP, Carballés MJC, Ausín-González E, Sánchez-Naves J, Campuzano S, Barderas R, Guzman-Aranguez A. Proteomics Analyses of Small Extracellular Vesicles of Aqueous Humor: Identification and Validation of GAS6 and SPP1 as Glaucoma Markers. Int J Mol Sci 2024; 25:6995. [PMID: 39000104 PMCID: PMC11241616 DOI: 10.3390/ijms25136995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2024] [Revised: 06/21/2024] [Accepted: 06/21/2024] [Indexed: 07/16/2024] Open
Abstract
Cataracts and glaucoma account for a high percentage of vision loss and blindness worldwide. Small extracellular vesicles (sEVs) are released into different body fluids, including the eye's aqueous humor. Information about their proteome content and characterization in ocular pathologies is not yet well established. In this study, aqueous humor sEVs from healthy individuals, cataracts, and glaucoma patients were studied, and their specific protein profiles were characterized. Moreover, the potential of identified proteins as diagnostic glaucoma biomarkers was evaluated. The protein content of sEVs from patients' aqueous humor with cataracts and glaucoma compared to healthy individuals was analyzed by quantitative proteomics. Validation was performed by western blot (WB) and ELISA. A total of 828 peptides and 192 proteins were identified and quantified. After data analysis with the R program, 8 significantly dysregulated proteins from aqueous humor sEVs in cataracts and 16 in glaucoma showed an expression ratio ≥ 1.5. By WB and ELISA using directly aqueous humor samples, the dysregulation of 9 proteins was mostly confirmed. Importantly, GAS6 and SPP1 showed high diagnostic ability of glaucoma, which in combination allowed for discriminating glaucoma patients from control individuals with an area under the curve of 76.1% and a sensitivity of 65.6% and a specificity of 87.7%.
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Affiliation(s)
- Raquel Rejas-González
- Chronic Disease Programme, UFIEC, Instituto de Salud Carlos III, 28220 Majadahonda, Madrid, Spain
- Biochemistry and Molecular Biology Department, Facultad de Óptica y Optometría, Universidad Complutense de Madrid, 28037 Madrid, Spain
| | - Ana Montero-Calle
- Chronic Disease Programme, UFIEC, Instituto de Salud Carlos III, 28220 Majadahonda, Madrid, Spain
| | - Alejandro Valverde
- Analytical Chemistry Department, Facultad de CC. Químicas, Universidad Complutense de Madrid, Pza. de las Ciencias 2, 28040 Madrid, Spain
| | | | | | - Emma Ausín-González
- Opthalmology Service, Hospital Universitario Infanta Leonor, 28031 Madrid, Spain
| | | | - Susana Campuzano
- Analytical Chemistry Department, Facultad de CC. Químicas, Universidad Complutense de Madrid, Pza. de las Ciencias 2, 28040 Madrid, Spain
| | - Rodrigo Barderas
- Chronic Disease Programme, UFIEC, Instituto de Salud Carlos III, 28220 Majadahonda, Madrid, Spain
- CIBER of Frailty and Healthy Aging (CIBERFES), 28029 Madrid, Spain
| | - Ana Guzman-Aranguez
- Biochemistry and Molecular Biology Department, Facultad de Óptica y Optometría, Universidad Complutense de Madrid, 28037 Madrid, Spain
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2
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Sun M, Chen Z. Unveiling the Complex Role of Exosomes in Alzheimer's Disease. J Inflamm Res 2024; 17:3921-3948. [PMID: 38911990 PMCID: PMC11193473 DOI: 10.2147/jir.s466821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Accepted: 06/11/2024] [Indexed: 06/25/2024] Open
Abstract
Alzheimer's disease (AD) is the most common neurodegenerative illness, characterized by memory loss and cognitive decline, accounting for 60-80% of dementia cases. AD is characterized by senile plaques made up of amyloid β (Aβ) protein, intracellular neurofibrillary tangles caused by hyperphosphorylation of tau protein linked with microtubules, and neuronal loss. Currently, therapeutic treatments and nanotechnological developments are effective in treating the symptoms of AD, but a cure for the illness has not yet been found. Recently, the increased study of extracellular vesicles (EVs) has led to a growing awareness of their significant involvement in neurodegenerative disorders, including AD. Exosomes are small extracellular vesicles that transport various components including messenger RNAs, non-coding RNAs, proteins, lipids, DNA, and other bioactive compounds from one cell to another, facilitating information transmission and material movement. There is growing evidence indicating that exosomes have complex functions in AD. Exosomes may have a dual role in Alzheimer's disease by contributing to neuronal death and also helping to alleviate the pathological progression of the disease. Therefore, the primary aim of this review is to outline the updated understandings on exosomes biogenesis and many functions of exosomes in the generation, conveyance, distribution, and elimination of hazardous proteins related to Alzheimer's disease. This review is intended to provide novel insights for understanding the development, specific treatment, and early detection of Alzheimer's disease.
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Affiliation(s)
- Mingyue Sun
- Department of Neurology, The Affiliated Changzhou No. 2 People’s Hospital of Nanjing Medical University, Changzhou, 213000, People’s Republic of China
| | - Zhuoyou Chen
- Department of Neurology, The Affiliated Changzhou No. 2 People’s Hospital of Nanjing Medical University, Changzhou, 213000, People’s Republic of China
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3
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Singh S, Paul D, Nath V, A R. Exosomes: current knowledge and future perspectives. Tissue Barriers 2024; 12:2232248. [PMID: 37439246 PMCID: PMC11042064 DOI: 10.1080/21688370.2023.2232248] [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: 05/08/2023] [Accepted: 06/27/2023] [Indexed: 07/14/2023] Open
Abstract
Exosomes are membrane-bound micro-vesicles that possess endless therapeutic potential for treatment of numerous pathologies including autoimmune, cardiovascular, ocular, and nervous disorders. Despite considerable knowledge about exosome biogenesis and secretion, still, there is a lack of information regarding exosome uptake by cell types and internal signaling pathways through which these exosomes process cellular response. Exosomes are key components of cell signaling and intercellular communication. In central nervous system (CNS), exosomes can penetrate BBB and maintain homeostasis by myelin sheath regulation and the waste products elimination. Therefore, the current review summarizes role of exosomes and their use as biomarkers in cardiovascular, nervous and ocular disorders. This aspect of exosomes provides positive hope to monitor disease development and enable early diagnosis and treatment optimization. In this review, we have summarized recent findings on physiological and therapeutic effects of exosomes and also attempt to provide insights about stress-preconditioned exosomes and stem cell-derived exosomes.
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Affiliation(s)
- Swati Singh
- College of Pharmacy, JSS Academy of Technical Sciences, Noida, Uttar Pradesh, India
| | - Deepraj Paul
- College of Pharmacy, JSS Academy of Technical Sciences, Noida, Uttar Pradesh, India
| | - Virendra Nath
- Department of Pharmacy, School of Chemical Sciences and Pharmacy, Central University of Rajasthan, Ajmer, India
| | - Rohini A
- College of Pharmacy, JSS Academy of Technical Sciences, Noida, Uttar Pradesh, India
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4
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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: 7] [Impact Index Per Article: 7.0] [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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5
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Peng C, Im D, Sirivolu S, Reiser B, Nagiel A, Neviani P, Xu L, Berry JL. Single vesicle analysis of aqueous humor in pediatric ocular diseases reveals eye specific CD63-dominant subpopulations. JOURNAL OF EXTRACELLULAR BIOLOGY 2022; 1:e36. [PMID: 36339649 PMCID: PMC9632627 DOI: 10.1002/jex2.36] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 03/05/2022] [Accepted: 03/14/2022] [Indexed: 06/16/2023]
Abstract
Aqueous humor (AH), the clear fluid in front of the eye, maintains the pressure and vitality of ocular tissues. This fluid is accessible via the clear cornea which enables use of AH as a liquid biopsy source of biomarkers for intraocular disease. Extracellular vesicles are detectable in the AH and small extracellular vesicles (sEVs) are present in the AH from adults. However, EVs in AH from pediatric eyes in vivo have never previously been explored. We know very little about the heterogeneity of AH EV populations in ocular disease. Twenty-seven processing-free AH samples from 19 patients across four different pediatric ocular diseases were subjected to Nanoparticle Tracking Analysis (NTA) and Single Particle-Interferometric Reflectance Imaging Sensor (SP-IRIS) analysis. NTA demonstrated the concentration of AH EV/EPs is 3.11 × 109-1.38 × 1010 particles/ml; the majority sized 76.8-103 nm. SP-IRIS revealed distinct patterns of tetraspanin expression of AH sEVs. An enriched mono-CD63+ sEV subpopulation identified in AH indicates this is a potential AH-specific biomarker. In the setting of retinoblastoma there was a more heterogeneous population of sEVs which normalized with treatment. This suggests a potential clinical application of direct measurement of sEV subpopulations in AH samples to monitor successful tumor response to therapy.
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Affiliation(s)
- Chen‐Ching Peng
- The Vision Center at Children's Hospital Los AngelesLos AngelesCaliforniaUSA
- USC Roski Eye InstituteKeck School of Medicine of the University of Southern CaliforniaLos AngelesCaliforniaUSA
| | - Deborah Im
- The Vision Center at Children's Hospital Los AngelesLos AngelesCaliforniaUSA
- USC Roski Eye InstituteKeck School of Medicine of the University of Southern CaliforniaLos AngelesCaliforniaUSA
| | - Shreya Sirivolu
- The Vision Center at Children's Hospital Los AngelesLos AngelesCaliforniaUSA
- USC Roski Eye InstituteKeck School of Medicine of the University of Southern CaliforniaLos AngelesCaliforniaUSA
| | - Bibiana Reiser
- The Vision Center at Children's Hospital Los AngelesLos AngelesCaliforniaUSA
- USC Roski Eye InstituteKeck School of Medicine of the University of Southern CaliforniaLos AngelesCaliforniaUSA
- The Saban Research InstituteChildren's Hospital Los AngelesLos AngelesCaliforniaUSA
| | - Aaron Nagiel
- The Vision Center at Children's Hospital Los AngelesLos AngelesCaliforniaUSA
- USC Roski Eye InstituteKeck School of Medicine of the University of Southern CaliforniaLos AngelesCaliforniaUSA
- The Saban Research InstituteChildren's Hospital Los AngelesLos AngelesCaliforniaUSA
| | - Paolo Neviani
- The Extracellular Vesicle Core at Children's Hospital Los AngelesLos AngelesCaliforniaUSA
| | - Liya Xu
- The Vision Center at Children's Hospital Los AngelesLos AngelesCaliforniaUSA
- USC Roski Eye InstituteKeck School of Medicine of the University of Southern CaliforniaLos AngelesCaliforniaUSA
| | - Jesse L. Berry
- The Vision Center at Children's Hospital Los AngelesLos AngelesCaliforniaUSA
- USC Roski Eye InstituteKeck School of Medicine of the University of Southern CaliforniaLos AngelesCaliforniaUSA
- The Saban Research InstituteChildren's Hospital Los AngelesLos AngelesCaliforniaUSA
- Norris Comprehensive Cancer CenterKeck School of MedicineUniversity of Southern CaliforniaLos AngelesCaliforniaUSA
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6
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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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7
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Soliman HM, Ghonaim GA, Gharib SM, Chopra H, Farag AK, Hassanin MH, Nagah A, Emad-Eldin M, Hashem NE, Yahya G, Emam SE, Hassan AEA, Attia MS. Exosomes in Alzheimer's Disease: From Being Pathological Players to Potential Diagnostics and Therapeutics. Int J Mol Sci 2021; 22:10794. [PMID: 34639135 PMCID: PMC8509246 DOI: 10.3390/ijms221910794] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 10/01/2021] [Accepted: 10/01/2021] [Indexed: 12/15/2022] Open
Abstract
Exosomes (EXOs) were given attention as an extracellular vesicle (EV) with a pivotal pathophysiological role in the development of certain neurodegenerative disorders (NDD), such as Parkinson's and Alzheimer's disease (AD). EXOs have shown the potential to carry pathological and therapeutic cargo; thus, researchers have harnessed EXOs in drug delivery applications. EXOs have shown low immunogenicity as natural drug delivery vehicles, thus ensuring efficient drug delivery without causing significant adverse reactions. Recently, EXOs provided potential drug delivery opportunities in AD and promising future clinical applications with the diagnosis of NDD and were studied for their usefulness in disease detection and prediction prior to the emergence of symptoms. In the future, the microfluidics technique will play an essential role in isolating and detecting EXOs to diagnose AD before the development of advanced symptoms. This review is not reiterative literature but will discuss why EXOs have strong potential in treating AD and how they can be used as a tool to predict and diagnose this disorder.
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Affiliation(s)
- Hagar M. Soliman
- Department of Pharmaceutics, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt; (H.M.S.); (G.A.G.); (S.M.G.); (A.K.F.); (M.H.H.); (A.N.); (N.E.H.); (S.E.E.)
| | - Ghada A. Ghonaim
- Department of Pharmaceutics, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt; (H.M.S.); (G.A.G.); (S.M.G.); (A.K.F.); (M.H.H.); (A.N.); (N.E.H.); (S.E.E.)
| | - Shaza M. Gharib
- Department of Pharmaceutics, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt; (H.M.S.); (G.A.G.); (S.M.G.); (A.K.F.); (M.H.H.); (A.N.); (N.E.H.); (S.E.E.)
| | - Hitesh Chopra
- Chitkara College of Pharmacy, Chitkara University, Punjab 140401, India;
| | - Aya K. Farag
- Department of Pharmaceutics, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt; (H.M.S.); (G.A.G.); (S.M.G.); (A.K.F.); (M.H.H.); (A.N.); (N.E.H.); (S.E.E.)
| | - Mohamed H. Hassanin
- Department of Pharmaceutics, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt; (H.M.S.); (G.A.G.); (S.M.G.); (A.K.F.); (M.H.H.); (A.N.); (N.E.H.); (S.E.E.)
| | - Abdalrazeq Nagah
- Department of Pharmaceutics, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt; (H.M.S.); (G.A.G.); (S.M.G.); (A.K.F.); (M.H.H.); (A.N.); (N.E.H.); (S.E.E.)
| | - Mahmoud Emad-Eldin
- Department of Clinical, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt;
| | - Nevertary E. Hashem
- Department of Pharmaceutics, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt; (H.M.S.); (G.A.G.); (S.M.G.); (A.K.F.); (M.H.H.); (A.N.); (N.E.H.); (S.E.E.)
| | - Galal Yahya
- Department of Microbiology and Immunology, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt;
| | - Sherif E. Emam
- Department of Pharmaceutics, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt; (H.M.S.); (G.A.G.); (S.M.G.); (A.K.F.); (M.H.H.); (A.N.); (N.E.H.); (S.E.E.)
| | - Abdalla E. A. Hassan
- Applied Nucleic Acids Research Center & Chemistry, Faculty of Science, Zagazig 44519, Egypt;
| | - Mohamed S. Attia
- Department of Pharmaceutics, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt; (H.M.S.); (G.A.G.); (S.M.G.); (A.K.F.); (M.H.H.); (A.N.); (N.E.H.); (S.E.E.)
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8
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Liu J, Jiang F, Jiang Y, Wang Y, Li Z, Shi X, Zhu Y, Wang H, Zhang Z. Roles of Exosomes in Ocular Diseases. Int J Nanomedicine 2020; 15:10519-10538. [PMID: 33402823 PMCID: PMC7778680 DOI: 10.2147/ijn.s277190] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2020] [Accepted: 11/30/2020] [Indexed: 12/11/2022] Open
Abstract
Exosomes, nanoscale vesicles with a diameter of 30 to 150 nm, are composed of a lipid bilayer, protein, and genetic material. Exosomes are secreted by virtually all types of cells in the human body. They have key functions in cell-to-cell communication, immune regulation, inflammatory response, and neovascularization. Mounting evidence indicates that exosomes play an important role in various diseases, such as cancer, cardiovascular diseases, and brain diseases; however, the role that exosomes play in eye diseases has not yet been rigorously studied. This review covers current exosome research as it relates to ocular diseases including diabetic retinopathy, age-related macular degeneration, autoimmune uveitis, glaucoma, traumatic optic neuropathies, corneal diseases, retinopathy of prematurity, and uveal melanoma. In addition, we discuss recent advances in the biological functions of exosomes, focusing on the toxicity of exosomes and the use of exosomes as biomarkers and drug delivery vesicles. Finally, we summarize the primary considerations and challenges to be taken into account for the effective applications of exosomes.
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Affiliation(s)
- Jia Liu
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai 264005, People's Republic of China
| | - Feng Jiang
- Department of Ophthalmology, Tianjin Medical University General Hospital, Tianjin 300052, People's Republic of China
| | - Yu Jiang
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai 264005, People's Republic of China
| | - Yicheng Wang
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai 264005, People's Republic of China
| | - Zelin Li
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai 264005, People's Republic of China
| | - Xuefeng Shi
- Department of Pediatric Ophthalmology and Strabismus, Tianjin Eye Hospital, Tianjin, 300020, People's Republic of China.,School of Medicine, Nankai University, Tianjin, 300071, People's Republic of China.,Clinical College of Ophthalmology, Tianjin Medical University, Tianjin 300020, People's Republic of China.,Tianjin Key Laboratory of Ophthalmology and Visual Science, Tianjin Eye Institute, Tianjin 300020, People's Republic of China
| | - Yanping Zhu
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai 264005, People's Republic of China
| | - Hongbo Wang
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai 264005, People's Republic of China
| | - Zhuhong Zhang
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai 264005, People's Republic of China
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9
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Wooff Y, Cioanca AV, Chu-Tan JA, Aggio-Bruce R, Schumann U, Natoli R. Small-Medium Extracellular Vesicles and Their miRNA Cargo in Retinal Health and Degeneration: Mediators of Homeostasis, and Vehicles for Targeted Gene Therapy. Front Cell Neurosci 2020; 14:160. [PMID: 32670023 PMCID: PMC7330137 DOI: 10.3389/fncel.2020.00160] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Accepted: 05/13/2020] [Indexed: 12/12/2022] Open
Abstract
Photoreceptor cell death and inflammation are known to occur progressively in retinal degenerative diseases such as age-related macular degeneration (AMD). However, the molecular mechanisms underlying these biological processes are largely unknown. Extracellular vesicles (EV) are essential mediators of cell-to-cell communication with emerging roles in the modulation of immune responses. EVs, including exosomes, encapsulate and transfer microRNA (miRNA) to recipient cells and in this way can modulate the environment of recipient cells. Dysregulation of EVs however is correlated to a loss of cellular homeostasis and increased inflammation. In this work we investigated the role of isolated retinal small-medium sized EV (s-mEV) which includes exosomes in both the healthy and degenerating retina. Isolated s-mEV from normal retinas were characterized using dynamic light scattering, transmission electron microscopy and western blotting, and quantified across 5 days of photo-oxidative damage-induced degeneration using nanotracking analysis. Small RNAseq was used to characterize the miRNA cargo of retinal s-mEV isolated from healthy and damaged retinas. Finally, the effect of exosome inhibition on cell-to-cell miRNA transfer and immune modulation was conducted using systemic daily administration of exosome inhibitor GW4869 and in situ hybridization of s-mEV-abundant miRNA, miR-124-3p. Electroretinography and immunohistochemistry was performed to assess functional and morphological changes to the retina as a result of GW4869-induced exosome depletion. Results demonstrated an inverse correlation between s-mEV concentration and photoreceptor survivability, with a decrease in s-mEV numbers following degeneration. Small RNAseq revealed that s-mEVs contained uniquely enriched miRNAs in comparison to in whole retinal tissue, however, there was no differential change in the s-mEV miRNAnome following photo-oxidative damage. Exosome inhibition via the use of GW4869 was also found to exacerbate retinal degeneration, with reduced retinal function and increased levels of inflammation and cell death demonstrated following photo-oxidative damage in exosome-inhibited mice. Further, GW4869-treated mice displayed impaired translocation of photoreceptor-derived miR-124-3p to the inner retina during damage. Taken together, we propose that retinal s-mEV and their miRNA cargo play an essential role in maintaining retinal homeostasis through immune-modulation, and have the potential to be used in targeted gene therapy for retinal degenerative diseases.
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Affiliation(s)
- Yvette Wooff
- The John Curtin School of Medical Research, The Australian National University, Canberra, ACT, Australia.,The ANU Medical School, The Australian National University, Canberra, ACT, Australia
| | - Adrian V Cioanca
- The John Curtin School of Medical Research, The Australian National University, Canberra, ACT, Australia
| | - Joshua A Chu-Tan
- The John Curtin School of Medical Research, The Australian National University, Canberra, ACT, Australia.,The ANU Medical School, The Australian National University, Canberra, ACT, Australia
| | - Riemke Aggio-Bruce
- The John Curtin School of Medical Research, The Australian National University, Canberra, ACT, Australia.,The ANU Medical School, The Australian National University, Canberra, ACT, Australia
| | - Ulrike Schumann
- The John Curtin School of Medical Research, The Australian National University, Canberra, ACT, Australia
| | - Riccardo Natoli
- The John Curtin School of Medical Research, The Australian National University, Canberra, ACT, Australia.,The ANU Medical School, The Australian National University, Canberra, ACT, Australia
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10
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Wang JY, Kwon JS, Hsu SM, Chuang HS. Sensitive tear screening of diabetic retinopathy with dual biomarkers enabled using a rapid electrokinetic patterning platform. LAB ON A CHIP 2020; 20:356-362. [PMID: 31848562 DOI: 10.1039/c9lc00975b] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Bead-based immunosensors have intrigued the scientific community over the past decades due to their rapid and multiplexed capabilities in the detection of various biological targets. Nevertheless, their use in the detection of low-abundance analytes remains a continuing challenge because of their limited number of active enrichment approaches. To this end, our research presents a delicate microbead enrichment technique using an optoelectrokinetic platform, followed by the detection of dual biomarkers for the sensitive screening of an eye disease termed diabetic retinopathy (DR). In this study, microbeads turned fluorescent as their surfaces formed sandwiched immunocomplexes in the presence of target antigens. The tiny fluorescent dots were then concentrated using the optoelectrokinetic platform for the enhancement of their signals. The signal rapidly escalated in 10 s, and the optimal limit of detection was nearly 100 pg mL-1. For practical DR screening, two biomarkers, lipocalin 1 (LCN1) and vascular endothelial growth factor (VEGF), were used. Approximately 20 μL of analytes were collected from the tear samples of the tested patients. The concentrations of both biomarkers showed escalating trends with the severity of DR. Two concentration thresholds of LCN1 and VEGF that indicate proliferative DR were determined out of 24 clinical samples based on the receiver operating characteristic curves. For verification, a single-blind test was conducted with additional clinical tear samples from five random subjects. The final outcome of this evaluation showed an accuracy of >80%. This non-invasive screening provides a potential means for the early diagnosis of DR and may increase the screening rate among the high-risk diabetic population in the future.
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Affiliation(s)
- Jen-Yi Wang
- Department of Biomedical Engineering, National Cheng Kung University, Taiwan
| | - Jae-Sung Kwon
- Division of Thermal and Fluids Science, Institute for Computational Science, Ton Duc Thang University, Ho Chi Minh City, Vietnam. and Faculty of Electrical and Electronics Engineering, Ton Duc Thang University, Ho Chi Minh City, Vietnam and Department of Mechanical Engineering, Incheon National University, Incheon, Republic of Korea.
| | - Sheng-Min Hsu
- Department of Ophthalmology, National Cheng Kung University Hospital, Taiwan
| | - Han-Sheng Chuang
- Department of Biomedical Engineering, National Cheng Kung University, Taiwan and Center for Micro/Nano Science and Technology, National Cheng Kung University, Taiwan.
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