1
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Wu S, Schekman RW. Intercellular transmission of alpha-synuclein. Front Mol Neurosci 2024; 17:1470171. [PMID: 39324117 PMCID: PMC11422390 DOI: 10.3389/fnmol.2024.1470171] [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: 07/25/2024] [Accepted: 08/28/2024] [Indexed: 09/27/2024] Open
Abstract
An emerging theme in Parkinson's disease (PD) is the propagation of α-synuclein pathology as the disease progresses. Research involving the injection of preformed α-synuclein fibrils (PFFs) in animal models has recapitulated the pathological spread observed in PD patients. At the cellular and molecular levels, this intercellular spread requires the translocation of α-synuclein across various membrane barriers. Recent studies have identified subcellular organelles and protein machineries that facilitate these processes. In this review, we discuss the proposed pathways for α-synuclein intercellular transmission, including unconventional secretion, receptor-mediated uptake, endosome escape and nanotube-mediated transfer. In addition, we advocate for a rigorous examination of the evidence for the localization of α-synuclein in extracellular vesicles.
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Affiliation(s)
| | - Randy W. Schekman
- Department of Molecular and Cell Biology, Howard Hughes Medical Institute, University of California, Berkeley, Berkeley, CA, United States
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2
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Sakai A, Yamada T, Maruyama M, Ueda K, Miyasaka T, Yoshida H, Suzuki H. Exploration for Blood Biomarkers of Human Long Non-coding RNAs Predicting Oxaliplatin-Induced Chronic Neuropathy Through iPS Cell-Derived Sensory Neuron Analysis. Mol Neurobiol 2024; 61:7168-7180. [PMID: 38374315 DOI: 10.1007/s12035-024-04017-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 02/02/2024] [Indexed: 02/21/2024]
Abstract
Oxaliplatin, a platinum-based chemotherapeutic agent, frequently causes acute and chronic peripheral sensory neuropathy, for which no effective treatment has been established. In particular, chronic neuropathy can persist for years even after treatment completion, thus worsening patients' quality of life. To avoid the development of intractable adverse effects, a predictive biomarker early in treatment is awaited. In this study, we explored extracellular long non-coding RNAs (lncRNAs) released from primary sensory neurons as biomarker candidates for oxaliplatin-induced peripheral neuropathy. Because many human-specific lncRNA genes exist, we induced peripheral sensory neurons from human induced pluripotent stem cells. Oxaliplatin treatment changed the levels of many lncRNAs in extracellular vesicles (EVs) released from cultured primary sensory neurons. Among them, the levels of release of lncRNAs that were considered to be selectively expressed in dorsal root ganglia were correlated with those of lncRNAs in plasma EV obtained from healthy individuals. Several lncRNAs in plasma EVs early after the initiation of treatment showed greater changes in patients who did not develop chronic neuropathy that persisted for more than 1 year than in those who did. Therefore, these extracellular lncRNAs in plasma EVs may represent predictive biomarkers for the development of chronic peripheral neuropathy induced by oxaliplatin.
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Affiliation(s)
- Atsushi Sakai
- Department of Pharmacology, Nippon Medical School, 1-1-5 Sendagi, Bunkyo-Ku, Tokyo, 113-8602, Japan.
| | - Takeshi Yamada
- Department of Gastrointestinal and Hepato-Biliary-Pancreatic Surgery, Nippon Medical School, 1-1-5 Sendagi, Bunkyo-Ku, Tokyo, 113-8602, Japan
| | - Motoyo Maruyama
- Department of Pharmacology, Nippon Medical School, 1-1-5 Sendagi, Bunkyo-Ku, Tokyo, 113-8602, Japan
- Division of Laboratory Animal Science, Nippon Medical School, Bunkyo-Ku, Tokyo, 113-8602, Japan
| | - Koji Ueda
- Department of Gastrointestinal and Hepato-Biliary-Pancreatic Surgery, Nippon Medical School, 1-1-5 Sendagi, Bunkyo-Ku, Tokyo, 113-8602, Japan
| | - Toshimitsu Miyasaka
- Department of Gastrointestinal and Hepato-Biliary-Pancreatic Surgery, Nippon Medical School, 1-1-5 Sendagi, Bunkyo-Ku, Tokyo, 113-8602, Japan
| | - Hiroshi Yoshida
- Department of Gastrointestinal and Hepato-Biliary-Pancreatic Surgery, Nippon Medical School, 1-1-5 Sendagi, Bunkyo-Ku, Tokyo, 113-8602, Japan
| | - Hidenori Suzuki
- Department of Pharmacology, Nippon Medical School, 1-1-5 Sendagi, Bunkyo-Ku, Tokyo, 113-8602, Japan
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3
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Fazzio A, Caponnetto A, Ferrara C, Purrello M, Di Pietro C, Battaglia R. From Germ Cells to Implantation: The Role of Extracellular Vesicles. J Dev Biol 2024; 12:22. [PMID: 39311117 PMCID: PMC11417829 DOI: 10.3390/jdb12030022] [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: 07/02/2024] [Revised: 08/09/2024] [Accepted: 08/22/2024] [Indexed: 09/26/2024] Open
Abstract
Extracellular vesicles represent a large heterogeneous class of near and long-distance intercellular communication mediators, released by both prokaryotic and eukaryotic cells. Specifically, the scientific community has shown growing interest in exosomes, which are nano-sized vesicles with an endosomal origin. Not so long ago, the physiological goal of exosome generation was largely unknown and required more investigation; at first, it was hypothesized that exosomes are able to remove excess, reject and unnecessary constituents from cells to preserve cellular homeostasis. However, thanks to recent studies, the central role of exosomes in regulating cellular communication has emerged. Exosomes act as vectors in cell-cell signaling by their cargo, proteins, lipids, and nucleic acids, and influence physiological and pathological processes. The findings on exosomes are widespread in a large spectrum of biomedical applications from diagnosis and prognosis to therapies. In this review, we describe exosome biogenesis and the current methods for their isolation and characterization, emphasizing the role of their cargo in female reproductive processes, from gametogenesis to implantation, and the potential involvement in human female disorders.
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Affiliation(s)
- Anna Fazzio
- Department of Biomedical and Biotechnological Sciences, Section of Biology and Genetics “G. Sichel”, University of Catania, 95123 Catania, Italy; (A.F.); (A.C.); (C.F.); (M.P.); (R.B.)
- Department of Physics and Astronomy “Ettore Majorana”, University of Catania, 95123 Catania, Italy
| | - Angela Caponnetto
- Department of Biomedical and Biotechnological Sciences, Section of Biology and Genetics “G. Sichel”, University of Catania, 95123 Catania, Italy; (A.F.); (A.C.); (C.F.); (M.P.); (R.B.)
| | - Carmen Ferrara
- Department of Biomedical and Biotechnological Sciences, Section of Biology and Genetics “G. Sichel”, University of Catania, 95123 Catania, Italy; (A.F.); (A.C.); (C.F.); (M.P.); (R.B.)
| | - Michele Purrello
- Department of Biomedical and Biotechnological Sciences, Section of Biology and Genetics “G. Sichel”, University of Catania, 95123 Catania, Italy; (A.F.); (A.C.); (C.F.); (M.P.); (R.B.)
| | - Cinzia Di Pietro
- Department of Biomedical and Biotechnological Sciences, Section of Biology and Genetics “G. Sichel”, University of Catania, 95123 Catania, Italy; (A.F.); (A.C.); (C.F.); (M.P.); (R.B.)
| | - Rosalia Battaglia
- Department of Biomedical and Biotechnological Sciences, Section of Biology and Genetics “G. Sichel”, University of Catania, 95123 Catania, Italy; (A.F.); (A.C.); (C.F.); (M.P.); (R.B.)
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4
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Wang Y, Ma H, Zhang X, Xiao X, Yang Z. The Increasing Diagnostic Role of Exosomes in Inflammatory Diseases to Leverage the Therapeutic Biomarkers. J Inflamm Res 2024; 17:5005-5024. [PMID: 39081872 PMCID: PMC11287202 DOI: 10.2147/jir.s475102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2024] [Accepted: 07/11/2024] [Indexed: 08/02/2024] Open
Abstract
Inflammatory diseases provide substantial worldwide concerns, affecting millions of people and healthcare systems by causing ongoing discomfort, diminished quality of life, and increased expenses. In light of the progress made in treatments, the limited effectiveness and negative side effects of present pharmaceuticals need a more comprehensive comprehension of the underlying processes in order to develop more precise remedies. Exosomes, which are tiny vesicles that play a vital role in cell communication, have been identified as prospective vehicles for effective delivery of anti-inflammatory medicines, immunomodulators, and gene treatments. Vesicles, which are secreted by different cells, have a crucial function in communicating between cells. This makes them valuable in the fields of diagnostics and therapies, particularly for inflammatory conditions. Exosomes have a role in regulating the immune system, transporting cytokines, and influencing cell signaling pathways associated with inflammation. They consist of proteins, lipids, and genetic information that have an impact on immune responses and inflammation. Scientists are now investigating exosomes as biomarkers for inflammatory disease. This review article aims to develop non-invasive diagnostic techniques with improved sensitivity and specificity. Purpose of this review is a thorough examination of exosomes in pharmacology, specifically emphasizing their origin, contents, and functions, with the objective of enhancing diagnostic and therapeutic strategies for inflammatory conditions. Gaining a comprehensive understanding of the intricate mechanisms involved in exosome-mediated interactions and their impact on immune responses is of utmost importance in order to devise novel approaches for tackling inflammatory disease and enhancing patient care.
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Affiliation(s)
- Yan Wang
- Department of Clinical Laboratory, The Second Hospital of Jilin University, Changchun, 130000, People’s Republic of China
| | - Hui Ma
- Department of Clinical Laboratory, The Second Hospital of Jilin University, Changchun, 130000, People’s Republic of China
| | - Xiaohua Zhang
- Department of Clinical Laboratory, The Second Hospital of Jilin University, Changchun, 130000, People’s Republic of China
| | - Xia Xiao
- Department of Clinical Laboratory, The Second Hospital of Jilin University, Changchun, 130000, People’s Republic of China
| | - Zecheng Yang
- Department of Gastrointestinal Surgery, The Second Hospital of Jilin University, Changchun, 130000, People’s Republic of China
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5
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Fekry B, Ugartemendia L, Esnaola NF, Goetzl L. Extracellular Vesicles, Circadian Rhythms, and Cancer: A Comprehensive Review with Emphasis on Hepatocellular Carcinoma. Cancers (Basel) 2024; 16:2552. [PMID: 39061191 PMCID: PMC11274441 DOI: 10.3390/cancers16142552] [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: 06/20/2024] [Revised: 07/12/2024] [Accepted: 07/14/2024] [Indexed: 07/28/2024] Open
Abstract
This review comprehensively explores the complex interplay between extracellular vesicles (ECVs)/exosomes and circadian rhythms, with a focus on the role of this interaction in hepatocellular carcinoma (HCC). Exosomes are nanovesicles derived from cells that facilitate intercellular communication by transporting bioactive molecules such as proteins, lipids, and RNA/DNA species. ECVs are implicated in a range of diseases, where they play crucial roles in signaling between cells and their surrounding environment. In the setting of cancer, ECVs are known to influence cancer initiation and progression. The scope of this review extends to all cancer types, synthesizing existing knowledge on the various roles of ECVs. A unique aspect of this review is the emphasis on the circadian-controlled release and composition of exosomes, highlighting their potential as biomarkers for early cancer detection and monitoring metastasis. We also discuss how circadian rhythms affect multiple cancer-related pathways, proposing that disruptions in the circadian clock can alter tumor development and treatment response. Additionally, this review delves into the influence of circadian clock components on ECV biogenesis and their impact on reshaping the tumor microenvironment, a key component driving HCC progression. Finally, we address the potential clinical applications of ECVs, particularly their use as diagnostic tools and drug delivery vehicles, while considering the challenges associated with clinical implementation.
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Affiliation(s)
- Baharan Fekry
- McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX 77030, USA; (L.U.); (L.G.)
| | - Lierni Ugartemendia
- McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX 77030, USA; (L.U.); (L.G.)
| | - Nestor F. Esnaola
- Division of Surgical Oncology and Gastrointestinal Surgery, Department of Surgery, Houston Methodist Hospital, Houston, TX 77030, USA;
| | - Laura Goetzl
- McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX 77030, USA; (L.U.); (L.G.)
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6
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Kumar RMR. Exosomal microRNAs: impact on cancer detection, treatment, and monitoring. Clin Transl Oncol 2024:10.1007/s12094-024-03590-6. [PMID: 38971914 DOI: 10.1007/s12094-024-03590-6] [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: 04/11/2024] [Accepted: 06/30/2024] [Indexed: 07/08/2024]
Abstract
Exosomes, measuring between 30 and 150 nm in diameter, are small vesicles enclosed by a lipid bilayer membrane. They are released by various cells in the body and carry a diverse payload of molecules, including proteins, lipids, mRNA, and different RNA species such as long non-coding RNA, circular RNA, and microRNA (miRNA). With lengths of approximately 19-22 nucleotides, miRNAs constitute the predominant cargo in exosomes and serve as crucial regulators of protein biosynthesis. In cancer detection, exosomal miRNAs show promise as non-invasive biomarkers due to their stability and presence in various bodily fluids, aiding in early detection and precise diagnosis with specific miRNA signatures linked to different cancer types. Moreover, exosomal miRNAs influence treatment outcomes by affecting cellular processes like cell growth, cell death, and drug resistance, thereby impacting response to therapy. Additionally, they serve as indicators of disease progression and treatment response, providing insights that can guide treatment decisions and improve patient care. Through longitudinal studies, changes in exosomal miRNA profiles have been observed to correlate with disease progression, metastasis, and response to therapy, highlighting their potential for real-time monitoring of tumor dynamics and treatment efficacy. Understanding the intricate roles of exosomal miRNAs in cancer biology offers opportunities for developing innovative diagnostic tools and therapeutic strategies tailored to individual patients, ultimately advancing precision medicine approaches and improving outcomes for cancer patients. This review aims to provide an understanding of the role of exosomal miRNAs in cancer detection, treatment, and monitoring, shedding light on their potential for revolutionising oncology practices and patient care.
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Affiliation(s)
- Ram Mohan Ram Kumar
- Department of Pharmaceutical Biotechnology, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Mysuru, Karnataka, India.
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7
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Wang Z, Zhang Y, Li X. Mitigation of Oxidative Stress in Idiopathic Pulmonary Fibrosis Through Exosome-Mediated Therapies. Int J Nanomedicine 2024; 19:6161-6176. [PMID: 38911503 PMCID: PMC11193999 DOI: 10.2147/ijn.s453739] [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: 12/07/2023] [Accepted: 05/01/2024] [Indexed: 06/25/2024] Open
Abstract
Idiopathic pulmonary fibrosis (IPF) poses a formidable clinical challenge, characterized by the thickening of alveolar septa and the onset of pulmonary fibrosis. The pronounced activation of oxidative stress emerges as a pivotal hallmark of inflammation. Traditional application of exogenous antioxidants proves inadequate in addressing oxidative stress, necessitating exploration into strategies to augment their antioxidant efficacy. Exosomes, nano-sized extracellular vesicles harboring a diverse array of bioactive factors, present as promising carriers with the potential to meet this challenge. Recent attention has been directed towards the clinical applications of exosomes in IPF, fueling the impetus for this comprehensive review. We have compiled fresh insights into the role of exosomes in modulating oxidative stress in IPF and delved into their potential as carriers for regulating endogenous reactive oxygen species generation. This review endeavors to bridge the divide between exosome research and IPF, traversing from bedside to bench. Through the synthesis of recent findings, we propose exosomes as a novel and promising strategy for improving the outcomes of IPF therapy.
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Affiliation(s)
- Zaiyan Wang
- Department of Pulmonary and Critical Care Medicine, Shanghai University of Medicine & Health Sciences Affiliated Zhoupu Hospital, Shanghai, 201318, People’s Republic of China
| | - Yuan Zhang
- Department of Pulmonary and Critical Care Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, 200433, People’s Republic of China
| | - Xiaoning Li
- Department of Geriatric Medicine, Shanghai University of Medicine & Health Sciences Affiliated Zhoupu Hospital, Shanghai, 201318, People’s Republic of China
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8
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Hayek H, Rehbini O, Kosmider B, Brandt T, Chatila W, Marchetti N, Criner GJ, Bolla S, Kishore R, Bowler RP, Bahmed K. The Regulation of Fatty Acid Synthase by Exosomal miR-143-5p and miR-342-5p in Idiopathic Pulmonary Fibrosis. Am J Respir Cell Mol Biol 2024; 70:259-282. [PMID: 38117249 DOI: 10.1165/rcmb.2023-0232oc] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Accepted: 12/19/2023] [Indexed: 12/21/2023] Open
Abstract
Idiopathic pulmonary fibrosis (IPF) is a chronic and progressive disease caused by an aberrant repair of injured alveolar epithelial cells. The maintenance of the alveolar epithelium and its regeneration after the damage is fueled by alveolar type II (ATII) cells. Injured cells release exosomes containing microRNAs (miRNAs), which can alter the recipient cells' function. Lung tissue, ATII cells, fibroblasts, plasma, and exosomes were obtained from naive patients with IPF, patients with IPF taking pirfenidone or nintedanib, and control organ donors. miRNA expression was analyzed to study their impact on exosome-mediated effects in IPF. High miR-143-5p and miR-342-5p levels were detected in ATII cells, lung tissue, plasma, and exosomes in naive patients with IPF. Decreased FASN (fatty acid synthase) and ACSL-4 (acyl-CoA-synthetase long-chain family member 4) expression was found in ATII cells. miR-143-5p and miR-342-5p overexpression or ATII cell treatment with IPF-derived exosomes containing these miRNAs lowered FASN and ACSL-4 levels. Also, this contributed to ATII cell injury and senescence. However, exosomes isolated from patients with IPF taking nintedanib or pirfenidone increased FASN expression in ATII cells compared with naive patients with IPF. Furthermore, fibroblast treatment with exosomes obtained from naive patients with IPF increased SMAD3, CTGF, COL3A1, and TGFβ1 expression. Our results suggest that IPF-derived exosomes containing miR-143-5p and miR-342-5p inhibited the de novo fatty acid synthesis pathway in ATII cells. They also induced the profibrotic response in fibroblasts. Pirfenidone and nintedanib improved ATII cell function and inhibited fibrogenesis. This study highlights the importance of exosomes in IPF pathophysiology.
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Affiliation(s)
- Hassan Hayek
- Department of Microbiology, Immunology, and Inflammation
- Center for Inflammation and Lung Research
| | | | - Beata Kosmider
- Department of Microbiology, Immunology, and Inflammation
- Center for Inflammation and Lung Research
- Department of Thoracic Medicine and Surgery
| | | | | | | | | | | | - Raj Kishore
- Center for Translational Medicine, and
- Department of Cardiovascular Sciences, Temple University, Philadelphia, Pennsylvania; and
| | - Russell P Bowler
- Department of Medicine, National Jewish Health, Denver, Colorado
| | - Karim Bahmed
- Department of Microbiology, Immunology, and Inflammation
- Center for Inflammation and Lung Research
- Department of Thoracic Medicine and Surgery
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9
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Mattera V, Occhiuzzi F, Correale J, Pasquini JM. Remyelinating effect driven by transferrin-loaded extracellular vesicles. Glia 2024; 72:338-361. [PMID: 37860913 DOI: 10.1002/glia.24478] [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: 02/11/2023] [Revised: 09/21/2023] [Accepted: 09/29/2023] [Indexed: 10/21/2023]
Abstract
Extracellular vesicles (EVs) are involved in diverse cellular functions, playing a significant role in cell-to-cell communication in both physiological conditions and pathological scenarios. Therefore, EVs represent a promising therapeutic strategy. Oligodendrocytes (OLs) are myelinating glial cells developed from oligodendrocyte progenitor cells (OPCs) and damaged in chronic demyelinating diseases such as multiple sclerosis (MS). Glycoprotein transferrin (Tf) plays a critical role in iron homeostasis and has pro-differentiating effects on OLs in vivo and in vitro. In the current work, we evaluated the use of EVs as transporters of Tf to the central nervous system (CNS) through the intranasal (IN) route. For the in vitro mechanistic studies, we used rat plasma EVs. Our results show that EVTf enter OPCs through clathrin-caveolae and cholesterol-rich lipid raft endocytic pathways, releasing the cargo and exerting a pro-maturation effect on OPCs. These effects were also observed in vivo using the animal model of demyelination induced by cuprizone (CPZ). In this model, IN administered Tf-loaded EVs isolated from mouse plasma reached the brain parenchyma, internalizing into OPCs, promoting their differentiation, and accelerating remyelination. Furthermore, in vivo experiments demonstrated that EVs protected the Tf cargo and significantly reduced the amount of Tf required to induce remyelination as compared to soluble Tf. Collectively, these findings unveil EVs as functional nanocarriers of Tf to induce remyelination.
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Affiliation(s)
- Vanesa Mattera
- Departamento de Química Biológica, Instituto de Química y Fisicoquímica Biológica (IQUIFIB), Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, CONICET, Buenos Aires, Argentina
| | - Federico Occhiuzzi
- Departamento de Química Biológica, Instituto de Química y Fisicoquímica Biológica (IQUIFIB), Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, CONICET, Buenos Aires, Argentina
| | - Jorge Correale
- Departamento de Química Biológica, Instituto de Química y Fisicoquímica Biológica (IQUIFIB), Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, CONICET, Buenos Aires, Argentina
- Departamento de Neurología, Fleni, Buenos Aires, Argentina
| | - Juana M Pasquini
- Departamento de Química Biológica, Instituto de Química y Fisicoquímica Biológica (IQUIFIB), Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, CONICET, Buenos Aires, Argentina
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10
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Cho YE, Chen S, Crouch K, Yun J, Klingelhutz A. Impact of Aging and a High-Fat Diet on Adipose-Tissue-Derived Extracellular Vesicle miRNA Profiles in Mice. Biomedicines 2024; 12:100. [PMID: 38255206 PMCID: PMC10813715 DOI: 10.3390/biomedicines12010100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Revised: 12/23/2023] [Accepted: 12/27/2023] [Indexed: 01/24/2024] Open
Abstract
BACKGROUND Middle-aged adults have the highest obesity rates, leading to significant health complications in later years. Obesity triggers the release of altered molecules, including extracellular vesicles (EVs) from excess adipose tissue (AT), contributing to various health complications. In this study, we assessed the effects of age and a high-fat diet on AT-derived EV miRNA profiles to understand their potential roles in aging and obesity. METHOD C57BL/6 male mice were subjected to a normal chow diet (NCD) or a high-fat diet (HFD) for either 10-12 weeks (young mice, n = 10) or 50-61 weeks (middle-aged mice, n = 12). After evaluating metabolic characteristics, peri-gonadal white AT was isolated and cultured to obtain EVs. AT-derived EV miRNAs were profiled using a NanoString miRNA panel (n = 599). RESULTS Middle-aged mice exhibited obesity regardless of diet. Young mice fed an HFD showed similar metabolic traits to middle-aged mice. In the NCD group, 131 differentially expressed miRNAs (DE-miRNAs) emerged in middle-aged mice compared to young mice, including miR-21, miR-148a, and miR-29a, associated with cancer, neuro/psychological disorders, and reproductive diseases. In the HFD group, 55 DE-miRNAs were revealed in middle-aged mice compared to young mice. These miRNAs were associated with significantly suppressed IGF1R activity. CONCLUSION This study demonstrates the potential significant impact of miRNAs of AT EVs on aging- and obesity-related diseases.
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Affiliation(s)
- Young-Eun Cho
- College of Nursing, The University of Iowa, 50 Newton Road, Iowa City, IA 52242, USA
| | - Shaoshuai Chen
- College of Nursing, The University of Iowa, 50 Newton Road, Iowa City, IA 52242, USA
| | - Keith Crouch
- College of Nursing, The University of Iowa, 50 Newton Road, Iowa City, IA 52242, USA
| | - Joseph Yun
- Predictiv Care, Inc., 800 West El Camino Real, Mountain View, CA 94040, USA
| | - Aloysius Klingelhutz
- Department of Microbiology and Immunology, College of Medicine, The University of Iowa, 51 Newton Road, Iowa City, IA 52242, USA
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11
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Lin YH. The effects of intracellular and exosomal ncRNAs on cancer progression. Cancer Gene Ther 2023; 30:1587-1597. [PMID: 37884579 DOI: 10.1038/s41417-023-00679-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Revised: 10/03/2023] [Accepted: 10/17/2023] [Indexed: 10/28/2023]
Abstract
Altered gene expression as well as mislocalization of a gene's encoded product (proteins or noncoding RNAs (ncRNAs)) can lead to disease and cancer formation. Multiple studies have indicated that exosomes and their contents act as cell-to-cell communicators and play a key role in cancer progression. Moreover, exosomes contain several functional molecules, including ncRNAs. NcRNAs function as master regulators to coordinate cell growth, cell motility and drug resistance. However, intracellular ncRNAs, which can be transferred to recipient cells via exosomes (exosomal ncRNAs), mediate common/distinct downstream molecules, signaling pathways and functions that are less emphasized concepts in cancer development research. In this study, by using exosomes as a model, we comprehensively discuss the current knowledge regarding (1) the functional role of ncRNAs, both their intracellular and exosomal forms, in cancer progression, (2) the possible mechanism of ncRNA incorporation into exosomes and (3) the therapeutic applications and limitations of exosomes based on current knowledge.
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Affiliation(s)
- Yang-Hsiang Lin
- Liver Research Center, Chang Gung Memorial Hospital, Linkou, Taoyuan, Taiwan.
- Department of Biochemistry, College of Medicine, Chang Gung University, Taoyuan, Taiwan.
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12
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Si Q, Wu L, Pang D, Jiang P. Exosomes in brain diseases: Pathogenesis and therapeutic targets. MedComm (Beijing) 2023; 4:e287. [PMID: 37313330 PMCID: PMC10258444 DOI: 10.1002/mco2.287] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 04/28/2023] [Accepted: 05/08/2023] [Indexed: 06/15/2023] Open
Abstract
Exosomes are extracellular vesicles with diameters of about 100 nm that are naturally secreted by cells into body fluids. They are derived from endosomes and are wrapped in lipid membranes. Exosomes are involved in intracellular metabolism and intercellular communication. They contain nucleic acids, proteins, lipids, and metabolites from the cell microenvironment and cytoplasm. The contents of exosomes can reflect their cells' origin and allow the observation of tissue changes and cell states under disease conditions. Naturally derived exosomes have specific biomolecules that act as the "fingerprint" of the parent cells, and the contents changed under pathological conditions can be used as biomarkers for disease diagnosis. Exosomes have low immunogenicity, are small in size, and can cross the blood-brain barrier. These characteristics make exosomes unique as engineering carriers. They can incorporate therapeutic drugs and achieve targeted drug delivery. Exosomes as carriers for targeted disease therapy are still in their infancy, but exosome engineering provides a new perspective for cell-free disease therapy. This review discussed exosomes and their relationship with the occurrence and treatment of some neuropsychiatric diseases. In addition, future applications of exosomes in the diagnosis and treatment of neuropsychiatric disorders were evaluated in this review.
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Affiliation(s)
- Qingying Si
- Department of EndocrinologyTengzhou Central People's HospitalTengzhouChina
| | - Linlin Wu
- Department of OncologyTengzhou Central People's HospitalTengzhouChina
| | - Deshui Pang
- Department of EndocrinologyTengzhou Central People's HospitalTengzhouChina
| | - Pei Jiang
- Translational Pharmaceutical LaboratoryJining First People's HospitalShandong First Medical UniversityJiningChina
- Institute of Translational PharmacyJining Medical Research AcademyJiningChina
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13
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Pan Y, Liu Y, Wei W, Yang X, Wang Z, Xin W. Extracellular Vesicles as Delivery Shippers for Noncoding RNA-Based Modulation of Angiogenesis: Insights from Ischemic Stroke and Cancer. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2205739. [PMID: 36592424 DOI: 10.1002/smll.202205739] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Revised: 12/02/2022] [Indexed: 06/17/2023]
Abstract
Ischemic stroke and systemic cancer are two of the leading causes of mortality. Hypoxia is a central pathophysiological component in ischemic stroke and cancer, representing a joint medical function. This function includes angiogenesis regulation. Vascular remodeling coupled with axonal outgrowth following cerebral ischemia is critical in improving poststroke neurological functional recovery. Antiangiogenic strategies can inhibit cancer vascularization and play a vital role in impeding cancer growth, invasion, and metastasis. Although there are significant differences in the cause of angiogenesis across both pathophysiological conditions, emerging evidence states that common signaling structures, such as extracellular vesicles (EVs) and noncoding RNAs (ncRNAs), are involved in this context. EVs, heterogeneous membrane vesicles encapsulating proteomic genetic information from parental cells, act as multifunctional regulators of intercellular communication. Among the multifaceted roles in modulating biological responses, exhaustive evidence shows that ncRNAs are selectively sorted into EVs, modulating common specific aspects of cancer development and stroke prognosis, namely, angiogenesis. This review will discuss recent advancements in the EV-facilitated/inhibited progression of specific elements of angiogenesis with a particular concern about ncRNAs within these vesicles. The review is concluded by underlining the clinical opportunities of EV-derived ncRNAs as diagnostic, prognostic, and therapeutic agents.
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Affiliation(s)
- Yongli Pan
- Department of Neurology, University Medical Center of Göttingen, Georg-August-University of Göttingen, 37075, Göttingen, Lower Saxony, Germany
- Department of Neurology, Weifang Medical University, Weifang, Shandong, 261053, China
| | - Yuheng Liu
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, 300052, China
- Tianjin Neurological Institute, Tianjin, 300052, China
| | - Wei Wei
- Department of Neurology, University Medical Center of Göttingen, Georg-August-University of Göttingen, 37075, Göttingen, Lower Saxony, Germany
- Department of Neurology, Mianyang Central Hospital, Mianyang, Sichuan, 621000, China
| | - Xinyu Yang
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, 300052, China
- Tianjin Neurological Institute, Tianjin, 300052, China
| | - Zengguang Wang
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, 300052, China
- Tianjin Neurological Institute, Tianjin, 300052, China
| | - Wenqiang Xin
- Department of Neurology, University Medical Center of Göttingen, Georg-August-University of Göttingen, 37075, Göttingen, Lower Saxony, Germany
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, 300052, China
- Tianjin Neurological Institute, Tianjin, 300052, China
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14
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Stejskal P, Goodarzi H, Srovnal J, Hajdúch M, van ’t Veer LJ, Magbanua MJM. Circulating tumor nucleic acids: biology, release mechanisms, and clinical relevance. Mol Cancer 2023; 22:15. [PMID: 36681803 PMCID: PMC9862574 DOI: 10.1186/s12943-022-01710-w] [Citation(s) in RCA: 64] [Impact Index Per Article: 64.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Accepted: 12/29/2022] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND Despite advances in early detection and therapies, cancer is still one of the most common causes of death worldwide. Since each tumor is unique, there is a need to implement personalized care and develop robust tools for monitoring treatment response to assess drug efficacy and prevent disease relapse. MAIN BODY Recent developments in liquid biopsies have enabled real-time noninvasive monitoring of tumor burden through the detection of molecules shed by tumors in the blood. These molecules include circulating tumor nucleic acids (ctNAs), comprising cell-free DNA or RNA molecules passively and/or actively released from tumor cells. Often highlighted for their diagnostic, predictive, and prognostic potential, these biomarkers possess valuable information about tumor characteristics and evolution. While circulating tumor DNA (ctDNA) has been in the spotlight for the last decade, less is known about circulating tumor RNA (ctRNA). There are unanswered questions about why some tumors shed high amounts of ctNAs while others have undetectable levels. Also, there are gaps in our understanding of associations between tumor evolution and ctNA characteristics and shedding kinetics. In this review, we summarize current knowledge about ctNA biology and release mechanisms and put this information into the context of tumor evolution and clinical utility. CONCLUSIONS A deeper understanding of the biology of ctDNA and ctRNA may inform the use of liquid biopsies in personalized medicine to improve cancer patient outcomes.
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Affiliation(s)
- Pavel Stejskal
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacký University and University Hospital in Olomouc, Olomouc, 779 00 Czech Republic
- Department of Biochemistry and Biophysics, University of California San Francisco, San Francisco, CA 94158 USA
| | - Hani Goodarzi
- Department of Biochemistry and Biophysics, University of California San Francisco, San Francisco, CA 94158 USA
- Department of Urology, University of California San Francisco, San Francisco, CA 94158 USA
| | - Josef Srovnal
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacký University and University Hospital in Olomouc, Olomouc, 779 00 Czech Republic
| | - Marián Hajdúch
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacký University and University Hospital in Olomouc, Olomouc, 779 00 Czech Republic
| | - Laura J. van ’t Veer
- Department of Laboratory Medicine, University of California San Francisco, 2340 Sutter Street, San Francisco, CA USA
| | - Mark Jesus M. Magbanua
- Department of Laboratory Medicine, University of California San Francisco, 2340 Sutter Street, San Francisco, CA USA
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15
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Ikuma Y, Sakai A, Sakamoto A, Suzuki H. Increased extracellular release of microRNAs from dorsal root ganglion cells in a rat model of neuropathic pain caused by peripheral nerve injury. PLoS One 2023; 18:e0280425. [PMID: 36662897 PMCID: PMC9858844 DOI: 10.1371/journal.pone.0280425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 01/02/2023] [Indexed: 01/21/2023] Open
Abstract
microRNAs (miRNAs) are extracellularly released by cells for intercellular communication, while intracellularly, they inhibit the expression of specific genes. An increasing number of studies suggest that extracellular miRNAs have great potential as both therapeutic targets and disease-specific biomarkers in a variety of diseases, including pain disorders. However, little is known about miRNA release from dorsal root ganglion (DRG) neurons in neuropathic pain caused by peripheral nerve injury. In this study, we investigated the changes in the extracellular release of miRNAs from DRG neurons in a rat model of neuropathic pain induced by chronic constriction injury of the sciatic nerve. We found increased release of six miRNAs (let-7d, miR-21, miR-142-3p, miR-146b, miR-203-3p and miR-221) from primary cultured DRG neurons prepared from rats 7 days after nerve injury. Among these, miR-221 was also increased in serum from days 7 to 28 after nerve injury. In contrast, serum miR-221 levels and its release from DRG neurons were unchanged in an inflammatory pain model produced by intraplantar injection of complete Freund's adjuvant. These results suggest that the increased release of specific miRNAs by DRG neurons may be involved in the pathophysiology of neuropathic pain through extracellular as well as intracellular mechanisms. Furthermore, serum miR-221 may be useful as a biomarker of neuropathic pain caused by peripheral nerve injury.
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Affiliation(s)
- Yuko Ikuma
- Department of Anesthesiology, Nippon Medical School, Bunkyo-ku, Tokyo, Japan
- Department of Pharmacology, Nippon Medical School, Bunkyo-ku, Tokyo, Japan
| | - Atsushi Sakai
- Department of Pharmacology, Nippon Medical School, Bunkyo-ku, Tokyo, Japan
| | - Atsuhiro Sakamoto
- Department of Anesthesiology, Nippon Medical School, Bunkyo-ku, Tokyo, Japan
| | - Hidenori Suzuki
- Department of Pharmacology, Nippon Medical School, Bunkyo-ku, Tokyo, Japan
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16
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Marangon D, Castro e Silva JH, Lecca D. Neuronal and Glial Communication via Non-Coding RNAs: Messages in Extracellular Vesicles. Int J Mol Sci 2022; 24:ijms24010470. [PMID: 36613914 PMCID: PMC9820657 DOI: 10.3390/ijms24010470] [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: 11/24/2022] [Revised: 12/22/2022] [Accepted: 12/23/2022] [Indexed: 12/29/2022] Open
Abstract
Extracellular vesicles (EVs) have been increasingly recognized as essential players in cell communication in many organs and systems, including the central nervous system (CNS). A proper interaction between neural cells is fundamental in the regulation of neurophysiological processes and its alteration could induce several pathological phenomena, such as neurodegeneration, neuroinflammation, and demyelination. EVs contain and transfer complex molecular cargoes typical of their cells of origin, such as proteins, lipids, carbohydrates, and metabolites to recipient cells. EVs are also enriched in non-coding RNAs (e.g., microRNAs, lncRNAs, and circRNA), which were formerly considered as cell-intrinsic regulators of CNS functions and pathologies, thus representing a new layer of regulation in the cell-to-cell communication. In this review, we summarize the most recent and advanced studies on the role of EV-derived ncRNAs in the CNS. First, we report the potential of neural stem cell-derived ncRNAs as new therapeutic tools for neurorepair. Then, we discuss the role of neuronal ncRNAs in regulating glia activation, and how alteration in glial ncRNAs influences neuronal survival and synaptic functions. We conclude that EV-derived ncRNAs can act as intercellular signals in the CNS to either propagate neuroinflammatory waves or promote reparative functions.
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17
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Molecular Docking and Intracellular Translocation of Extracellular Vesicles for Efficient Drug Delivery. Int J Mol Sci 2022; 23:ijms232112971. [PMID: 36361760 PMCID: PMC9659046 DOI: 10.3390/ijms232112971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 10/07/2022] [Accepted: 10/21/2022] [Indexed: 12/12/2022] Open
Abstract
Extracellular vesicles (EVs), including exosomes, mediate intercellular communication by delivering their contents, such as nucleic acids, proteins, and lipids, to distant target cells. EVs play a role in the progression of several diseases. In particular, programmed death-ligand 1 (PD-L1) levels in exosomes are associated with cancer progression. Furthermore, exosomes are being used for new drug-delivery systems by modifying their membrane peptides to promote their intracellular transduction via micropinocytosis. In this review, we aim to show that an efficient drug-delivery system and a useful therapeutic strategy can be established by controlling the molecular docking and intracellular translocation of exosomes. We summarise the mechanisms of molecular docking of exosomes, the biological effects of exosomes transmitted into target cells, and the current state of exosomes as drug delivery systems.
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18
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Bourgery M, Ekholm E, Hiltunen A, Heino TJ, Pursiheimo JP, Bendre A, Yatkin E, Laitala T, Määttä J, Säämänen AM. Signature of circulating small non-coding RNAs during early fracture healing in mice. Bone Rep 2022; 17:101627. [PMID: 36304905 PMCID: PMC9593857 DOI: 10.1016/j.bonr.2022.101627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Revised: 10/04/2022] [Accepted: 10/15/2022] [Indexed: 11/06/2022] Open
Abstract
Fracture healing is a complex process with multiple overlapping metabolic and differentiation phases. Small non-coding RNAs are involved in the regulation of fracture healing and their presence in circulation is under current interest due to their obvious value as potential biomarkers. Circulating microRNAs (miRNAs) have been characterized to some extent but the current knowledge on tRNA-derived small RNA fragments (tsRNAs) is relatively scarce, especially in circulation. In this study, the spectrum of circulating miRNAs and tsRNAs was analysed by next generation sequencing to show their differential expression during fracture healing in vivo. Analysed tsRNA fragments included stress-induced translation interfering tRNA fragments (tiRNAs or tRNA halves) and internal tRNA fragments (i-tRF), within the size range of 28–36 bp. To unveil the expression of these non-coding RNAs, genome-wide analysis was performed on two months old C57BL/6 mice on days 1, 5, 7, 10, and 14 (D1, D5, D7, D10, and D14) after a closed tibial fracture. Valine isoacceptor tRNA-derived Val-AAC 5′end and Val-CAC 5′end fragments were the major types of 5′end tiRNAs in circulation, comprising about 65 % of the total counts. Their expression was not affected by fracture. After a fracture, the levels of two 5′end tiRNAs Lys-TTT 5′ and Lys-CTT 5′ were decreased and His-GTG 5′ was increased through D1-D14. The level of miR-451a was decreased on the first post-fracture day (D1), whereas miR-328-3p, miR-133a-3p, miR-375-3p, miR-423-5p, and miR-150-5p were increased post-fracture. These data provide evidence on how fracture healing could provoke systemic metabolic effects and further pinpoint the potential of small non-coding RNAs as biomarkers for tissue regeneration.
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Affiliation(s)
- Matthieu Bourgery
- Integrative Physiology and Pharmacology Unit, Institute of Biomedicine, University of Turku, Finland
| | - Erika Ekholm
- Integrative Physiology and Pharmacology Unit, Institute of Biomedicine, University of Turku, Finland
| | | | - Terhi J. Heino
- Integrative Physiology and Pharmacology Unit, Institute of Biomedicine, University of Turku, Finland
| | - Juha-Pekka Pursiheimo
- Integrative Physiology and Pharmacology Unit, Institute of Biomedicine, University of Turku, Finland,Genomill Health, Turku, Finland
| | - Ameya Bendre
- Integrative Physiology and Pharmacology Unit, Institute of Biomedicine, University of Turku, Finland,Division of Pediatric Endocrinology and Center for Molecular Medicine, Department of Women's and Children's Health, Karolinska Institutet and University Hospital, Stockholm, Sweden
| | - Emrah Yatkin
- Central Animal Laboratory, University of Turku, Turku, Finland
| | - Tiina Laitala
- Integrative Physiology and Pharmacology Unit, Institute of Biomedicine, University of Turku, Finland
| | - Jorma Määttä
- Integrative Physiology and Pharmacology Unit, Institute of Biomedicine, University of Turku, Finland,Turku Center for Disease Modeling (TCDM), Turku, Finland
| | - Anna-Marja Säämänen
- Integrative Physiology and Pharmacology Unit, Institute of Biomedicine, University of Turku, Finland,Corresponding author at: Institute of Biomedicine, University of Turku, Finland.
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19
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Lee N, Canagasingham A, Bajaj M, Shanmugasundaram R, Hutton A, Bucci J, Graham P, Thompson J, Ni J. Urine exosomes as biomarkers in bladder cancer diagnosis and prognosis: From functional roles to clinical significance. Front Oncol 2022; 12:1019391. [PMID: 36203422 PMCID: PMC9530625 DOI: 10.3389/fonc.2022.1019391] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Accepted: 09/01/2022] [Indexed: 11/25/2022] Open
Abstract
Bladder cancer is one of the top ten most common cancers and top ten causes of cancer death globally. 5-year survival rates have decreased in Australia from 66% to 55% in the past three decades. The current gold standard for diagnosis is cystoscopy. However, cystoscopies are an invasive and health-resource intensive procedure which has sub-optimal sensitivity for flat lesions such as CIS (carcinoma in situ) and low specificity for differentiating inflammation from cancer - hence requiring biopsies under anesthesia. Frequent and life-long surveillance cystoscopy is required for most patients since there are high rates of progression and local recurrence in high-risk non-muscle invasive cancer (NMIBC) as well as poor outcomes associated with delayed detection of muscle-invasive bladder cancer (MIBC). There is an unmet need for a non-invasive test to provide better discrimination and risk-stratification of bladder cancer which could aid clinicians by improving patient selection for cystoscopy; enhanced risk stratification methods may guide the frequency of surveillance cystoscopies and inform treatment choices. Exosomes, which are nano-sized extracellular vesicles containing genetic material and proteins, have been shown to have functional roles in the development and progression of bladder cancer. Exosomes have also been demonstrated to be a robust source of potential biomarkers for bladder cancer diagnosis and prognosis and may also have roles as therapeutic agents. In this review, we summarize the latest evidence of biological roles of exosomes in bladder cancer and highlight their clinical significance in bladder cancer diagnosis, surveillance and treatment.
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Affiliation(s)
- Nicholas Lee
- St George and Sutherland Clinical Campuses, School of Clinical Medicine, Faculty of Medicine & Health, UNSW Sydney, Kensington, NSW, Australia
| | | | - Mohit Bajaj
- Department of Urology, St George Hospital, Kogarah, NSW, Australia
| | | | - Anthony Hutton
- St George and Sutherland Clinical Campuses, School of Clinical Medicine, Faculty of Medicine & Health, UNSW Sydney, Kensington, NSW, Australia
- Department of Urology, St George Hospital, Kogarah, NSW, Australia
| | - Joseph Bucci
- St George and Sutherland Clinical Campuses, School of Clinical Medicine, Faculty of Medicine & Health, UNSW Sydney, Kensington, NSW, Australia
- Cancer Care Centre, St George Hospital, Kogarah, NSW, Australia
| | - Peter Graham
- St George and Sutherland Clinical Campuses, School of Clinical Medicine, Faculty of Medicine & Health, UNSW Sydney, Kensington, NSW, Australia
- Cancer Care Centre, St George Hospital, Kogarah, NSW, Australia
| | - James Thompson
- St George and Sutherland Clinical Campuses, School of Clinical Medicine, Faculty of Medicine & Health, UNSW Sydney, Kensington, NSW, Australia
- Department of Urology, St George Hospital, Kogarah, NSW, Australia
- *Correspondence: James Thompson, ; Jie Ni,
| | - Jie Ni
- St George and Sutherland Clinical Campuses, School of Clinical Medicine, Faculty of Medicine & Health, UNSW Sydney, Kensington, NSW, Australia
- Cancer Care Centre, St George Hospital, Kogarah, NSW, Australia
- *Correspondence: James Thompson, ; Jie Ni,
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20
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Surmiak M, Wawrzycka-Adamczyk K, Kosałka-Węgiel J, Polański S, Sanak M. Profile of circulating extracellular vesicles microRNA correlates with the disease activity in granulomatosis with polyangiitis. Clin Exp Immunol 2022; 208:103-113. [PMID: 35380163 PMCID: PMC9113355 DOI: 10.1093/cei/uxac022] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 02/03/2022] [Accepted: 03/02/2022] [Indexed: 01/12/2023] Open
Abstract
Granulomatosis with polyangiitis is a chronic systemic inflammation of small vessels characterized by circulating anti-proteinase 3 antibodies. MicroRNAs are short transcripts specifically inhibiting protein translation. Neutrophils can release extracellular vesicles (EVs). In this study, we characterized profile of microRNA trafficked by EVs in GPA. Fifty patients with GPA were enrolled in the study, 25 at acute phase and 25 in remission. EVs were isolated from the blood serum, characterized by their number, size distribution. Following unbiased screening for microRNA expression, differentially expressed candidates were measured by quantitative real-time PCR. Circulating DNA-myeloperoxidase complexes and apoptosis-related transcripts in peripheral blood neutrophils were quantified. We identified four differentially expressed microRNAs from EVs in granulomatosis with polyangiitis (GPA). MirRs-223-3p, 664a-3p, and 200b-3p were overexpressed and miR-769-5p suppressed in the disease. A distinction between GPA and healthy controls was the best for miR-223-3p, whereas miR-664a-3p discriminated between active vs. remission of GPA. Correct classification of the disease based on multivariate discriminant analysis was between 92% for acute phase and 85% for all study participants. Bioinformatics tools identified genes transcripts potentially targeted by the microRNAs belonging to pathways of focal adhesion, mTOR signaling and neutrophil extracellular traps formation. Two microRNAs positively correlating with the disease activity were involved in neutrophil extracellular traps formation and apoptosis inhibition. A comprehensive characteristics of microRNAs trafficked in bloodstream inside EVs correlates well with our understanding of the mechanisms of GPA and suggests the importance of EVs in progression of the disease.
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Affiliation(s)
- Marcin Surmiak
- Department of Internal Medicine, Jagiellonian University Medical College, 8 Skawinska Str., 31-066 Kraków, Poland
| | | | - Joanna Kosałka-Węgiel
- Department of Internal Medicine, Jagiellonian University Medical College, 8 Skawinska Str., 31-066 Kraków, Poland
| | - Stanisław Polański
- Division of Biochemical and Molecular Diagnostics, University Hospital, 8 Skawinska Str., 31-066 Kraków, Poland
| | - Marek Sanak
- Department of Internal Medicine, Jagiellonian University Medical College, 8 Skawinska Str., 31-066 Kraków, Poland
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21
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Riffo-Campos AL, Perez-Hernandez J, Martinez-Arroyo O, Ortega A, Flores-Chova A, Redon J, Cortes R. Biofluid Specificity of Long Non-Coding RNA Profile in Hypertension: Relevance of Exosomal Fraction. Int J Mol Sci 2022; 23:ijms23095199. [PMID: 35563588 PMCID: PMC9101961 DOI: 10.3390/ijms23095199] [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: 03/08/2022] [Revised: 05/03/2022] [Accepted: 05/04/2022] [Indexed: 11/16/2022] Open
Abstract
Non-coding RNA (ncRNA)-mediated targeting of various genes regulates the molecular mechanisms of the pathogenesis of hypertension (HTN). However, very few circulating long ncRNAs (lncRNAs) have been reported to be altered in essential HTN. The aim of our study was to identify a lncRNA profile in plasma and plasma exosomes associated with urinary albumin excretion in HTN by next-generation sequencing and to assess biological functions enriched in response to albuminuria using GO and KEGG analysis. Plasma exosomes showed higher diversity and fold change of lncRNAs than plasma, and low transcript overlapping was found between the two biofluids. Enrichment analysis identified different biological pathways regulated in plasma or exosome fraction, which were implicated in fatty acid metabolism, extracellular matrix, and mechanisms of sorting ncRNAs into exosomes, while plasma pathways were implicated in genome reorganization, interference with RNA polymerase, and as scaffolds for assembling transcriptional regulators. Our study found a biofluid specific lncRNA profile associated with albuminuria, with higher diversity in exosomal fraction, which identifies several potential targets that may be utilized to study mechanisms of albuminuria and cardiovascular damage.
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Affiliation(s)
- Angela L. Riffo-Campos
- Millennium Nucleus on Sociomedicine (SocioMed) and Vicerrectoría Académica, Universidad de La Frontera, Temuco 4780000, Chile;
- Department of Computer Science, ETSE, University of Valencia, 46010 Valencia, Spain
| | - Javier Perez-Hernandez
- Cardiometabolic and Renal Risk Research Group, INCLIVA Biomedical Research Institute, 46010 Valencia, Spain; (J.P.-H.); (O.M.-A.); (A.F.-C.); (J.R.)
- Department of Nutrition and Health, Valencian International University (VIU), 46002 Valencia, Spain
- T-Cell Tolerance, Biomarkers and Therapies in Type 1 Diabetes Team, Institut Cochin CNRS, INSERM, Université de Paris Cité, F-75014 Paris, France
| | - Olga Martinez-Arroyo
- Cardiometabolic and Renal Risk Research Group, INCLIVA Biomedical Research Institute, 46010 Valencia, Spain; (J.P.-H.); (O.M.-A.); (A.F.-C.); (J.R.)
| | - Ana Ortega
- Cardiometabolic and Renal Risk Research Group, INCLIVA Biomedical Research Institute, 46010 Valencia, Spain; (J.P.-H.); (O.M.-A.); (A.F.-C.); (J.R.)
- Correspondence: (A.O.); (R.C.); Tel.: +34-961973517 (R.C.)
| | - Ana Flores-Chova
- Cardiometabolic and Renal Risk Research Group, INCLIVA Biomedical Research Institute, 46010 Valencia, Spain; (J.P.-H.); (O.M.-A.); (A.F.-C.); (J.R.)
| | - Josep Redon
- Cardiometabolic and Renal Risk Research Group, INCLIVA Biomedical Research Institute, 46010 Valencia, Spain; (J.P.-H.); (O.M.-A.); (A.F.-C.); (J.R.)
- Internal Medicine Unit, Hospital Clinico Universitario, 46010 Valencia, Spain
- CIBER of Physiopathology of Obesity and Nutrition (CIBEROBN), Institute of Health Carlos III, Minister of Health, 28029 Madrid, Spain
| | - Raquel Cortes
- Cardiometabolic and Renal Risk Research Group, INCLIVA Biomedical Research Institute, 46010 Valencia, Spain; (J.P.-H.); (O.M.-A.); (A.F.-C.); (J.R.)
- Correspondence: (A.O.); (R.C.); Tel.: +34-961973517 (R.C.)
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22
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Zhang P, Rasheed M, Liang J, Wang C, Feng L, Chen Z. Emerging Potential of Exosomal Non-coding RNA in Parkinson’s Disease: A Review. Front Aging Neurosci 2022; 14:819836. [PMID: 35360206 PMCID: PMC8960858 DOI: 10.3389/fnagi.2022.819836] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Accepted: 02/07/2022] [Indexed: 12/13/2022] Open
Abstract
Exosomes are extracellular vesicles that are released by cells and circulate freely in body fluids. Under physiological and pathological conditions, they serve as cargo for various biological substances such as nucleotides (DNA, RNA, ncRNA), lipids, and proteins. Recently, exosomes have been revealed to have an important role in the pathophysiology of several neurodegenerative illnesses, including Parkinson’s disease (PD). When secreted from damaged neurons, these exosomes are enriched in non-coding RNAs (e.g., miRNAs, lncRNAs, and circRNAs) and display wide distribution characteristics in the brain and periphery, bridging the gap between normal neuronal function and disease pathology. However, the current status of ncRNAs carried in exosomes regulating neuroprotection and PD pathogenesis lacks a systematic summary. Therefore, this review discussed the significance of ncRNAs exosomes in maintaining the normal neuron function and their pathogenic role in PD progression. Additionally, we have emphasized the importance of ncRNAs exosomes as potential non-invasive diagnostic and screening agents for the early detection of PD. Moreover, bioengineered exosomes are proposed to be used as drug carriers for targeted delivery of RNA interference molecules across the blood-brain barrier without immune system interference. Overall, this review highlighted the diverse characteristics of ncRNA exosomes, which may aid researchers in characterizing future exosome-based biomarkers for early PD diagnosis and tailored PD medicines.
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Affiliation(s)
- Peng Zhang
- School of Mechanical Engineering and Automation, Beihang University, Beijing, China
| | - Madiha Rasheed
- School of Life Sciences, Beijing Institute of Technology, Beijing, China
| | - Junhan Liang
- School of Life Sciences, Beijing Institute of Technology, Beijing, China
| | - Chaolei Wang
- School of Life Sciences, Beijing Institute of Technology, Beijing, China
| | - Lin Feng
- School of Mechanical Engineering and Automation, Beihang University, Beijing, China
- Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing, China
- *Correspondence: Lin Feng,
| | - Zixuan Chen
- School of Life Sciences, Beijing Institute of Technology, Beijing, China
- Zixuan Chen,
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23
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Yang T, Wang J, Zhao J, Liu Y. Current and prospective applications of exosomal microRNAs in pulmonary fibrosis (Review). Int J Mol Med 2022; 49:37. [PMID: 35088880 PMCID: PMC8815412 DOI: 10.3892/ijmm.2022.5092] [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: 11/03/2021] [Accepted: 01/07/2022] [Indexed: 12/12/2022] Open
Abstract
Pulmonary fibrosis (PF) is a chronic, progressive, irreversible and life‑threatening lung disease. However, the pathogenesis and molecular mechanisms of this condition remain unclear. Extracellular vesicles (EVs) are structures derived from the plasma membrane, with a diameter ranging from 30 nm to 5 µm, that play an important role in cell‑to‑cell communications in lung disease, particularly between epithelial cells and the pulmonary microenvironment. In particular, exosomes are a type of EV that can deliver cargo molecules, including endogenous proteins, lipids and nucleic acids, such as microRNAs (miRNAs/miRs). These cargo molecules are encapsulated in lipid bilayers through target cell internalization, receptor‑ligand interactions or lipid membrane fusion. miRNAs are single‑stranded RNA molecules that regulate cell differentiation, proliferation and apoptosis by degrading target mRNAs or inhibiting translation to modulate gene expression. The aim of the present review was to discuss the current knowledge available on exosome biogenesis, composition and isolation methods. The role of miRNAs in the pathogenesis of PF was also reviewed. In addition, emerging diagnostic and therapeutic properties of exosomes and exosomal miRNAs in PF were described, in order to highlight the potential applications of exosomal miRNAs in PF.
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Affiliation(s)
- Tao Yang
- Department of Respiratory and Critical Care Medicine, Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu 212001, P.R. China
- The First Clinical Medical School of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Jian Wang
- Department of Respiratory and Critical Care Medicine, Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu 212001, P.R. China
| | - Jiaying Zhao
- School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212001, P.R. China
| | - Yang Liu
- Department of Respiratory and Critical Care Medicine, Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu 212001, P.R. China
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Powrózek T, Ochieng Otieno M. Blood Circulating Non-Coding RNAs for the Clinical Management of Triple-Negative Breast Cancer. Cancers (Basel) 2022; 14:803. [PMID: 35159070 PMCID: PMC8833777 DOI: 10.3390/cancers14030803] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 02/02/2022] [Accepted: 02/03/2022] [Indexed: 02/06/2023] Open
Abstract
Triple negative breast cancer (TNBC) represents the most aggressive subtype of breast cancer, and is related to unfavorable prognosis and limited treatment strategies. Currently, there is a lack of reliable biomarkers allowing for the clinical management of TNBC. This is probably caused by a complex molecular background, leading to the development and establishment of a unique tumor phenotype. Recent studies have reported non-coding RNAs (ncRNAs) not only as the most promising class of molecular agents with a high applicability to manage human cancers, including TNBC, but also as robust and non-invasive biomarkers that are able to be monitored in blood circulation, with the application of liquid biopsy. There is a lack of papers discussing the role of blood-circulating ncRNAs as diagnostic, predictive, and prognostic biomarkers for TNBC. In this paper, we summarized the available literature reports on the utility of blood-circulating ncRNAs for TNBC management. Additionally, we supplemented this review by bioinformatics analysis, for better understanding of the role of ncRNAs' machinery in the development of a unique TNBC phenotype.
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Affiliation(s)
- Tomasz Powrózek
- Department of Human Physiology, Medical University of Lublin, 20-080 Lublin, Poland
| | - Michael Ochieng Otieno
- Haematological Malignancies H12O Clinical Research Unit, Spanish National Cancer Research Centre, 28029 Madrid, Spain;
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25
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Cammarata G, de Miguel-Perez D, Russo A, Peleg A, Dolo V, Rolfo C, Taverna S. Emerging noncoding RNAs contained in extracellular vesicles: rising stars as biomarkers in lung cancer liquid biopsy. Ther Adv Med Oncol 2022; 14:17588359221131229. [PMID: 36353504 PMCID: PMC9638531 DOI: 10.1177/17588359221131229] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Accepted: 09/12/2022] [Indexed: 11/06/2022] Open
Abstract
Lung cancer has a high morbidity and mortality rate, and affected patients have a
poor prognosis and low survival. The therapeutic approaches for lung cancer
treatment, including surgery, radiotherapy, and chemotherapy, are not completely
effective, due to late diagnosis. Although the identification of genetic drivers
has contributed to the improvement of lung cancer clinical management, the
discovery of new diagnostic and prognostic tools remains a critical issue.
Liquid biopsy (LB) represents a minimally invasive approach and practical
alternative source to investigate tumor-derived alterations and to facilitate
the selection of targeted therapies. LB allows for the testing of different
analytes such as circulating tumor cells, extracellular vesicles (EVs),
tumor-educated platelets, and cell-free nucleic acids including DNAs, RNAs, and
noncoding RNAs (ncRNAs). Several regulatory factors control the key cellular
oncogenic pathways involved in cancers. ncRNAs have a wide range of regulatory
effects in lung cancers. This review focuses on emerging regulatory ncRNAs,
freely circulating in body fluids or shuttled by EVs, such as circular-RNAs,
small nucleolar-RNAs, small nuclear-RNAs, and piwi-RNAs, as new biomarkers for
early detection, prognosis, and monitoring of therapeutic strategy of lung
cancer treatment.
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Affiliation(s)
- Giuseppe Cammarata
- Institute of Translational Pharmacology (IFT), National Research Council (CNR) of Italy, Palermo, Italy
| | - Diego de Miguel-Perez
- Center for Thoracic Oncology, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Alessandro Russo
- Medical Oncology Unit, A.O. Papardo & Department of Human Pathology, University of Messina, Messina, Italy
| | - Ariel Peleg
- Center for Thoracic Oncology, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Vincenza Dolo
- Department of Life, Health and Environmental Sciences, University of L’Aquila, L’Aquila, Italy
| | - Christian Rolfo
- Center for Thoracic Oncology, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, One Gustave Levy Place, Box 1079, New York, NY 10029-6574, USA
| | - Simona Taverna
- Institute of Translational Pharmacology (IFT), National Research Council (CNR) of Italy, Via Ugo La Malfa, 153, Palermo 90146, Italy
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26
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Zubkova E, Evtushenko E, Beloglazova I, Osmak G, Koshkin P, Moschenko A, Menshikov M, Parfyonova Y. Analysis of MicroRNA Profile Alterations in Extracellular Vesicles From Mesenchymal Stromal Cells Overexpressing Stem Cell Factor. Front Cell Dev Biol 2021; 9:754025. [PMID: 34869342 PMCID: PMC8634878 DOI: 10.3389/fcell.2021.754025] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 09/29/2021] [Indexed: 11/13/2022] Open
Abstract
Mesenchymal stem/stromal cells (MSCs) represent a promising tool to treat cardiovascular diseases. One mode of action through which MSCs exert their protective effects is secretion of extracellular vesicles (EVs). Recently, we demonstrated that rat adipose-derived MSC-overexpressing stem cell factor (SCF) can induce endogenous regenerative processes and improve cardiac function. In the present work, we isolated EVs from intact, GFP- or SCF-overexpressing rat MSC and analyzed microarray datasets of their miRNA cargo. We uncovered a total of 95 differentially expressed miRNAs. We did not observe significant differences between EVs from GFP-MSC and SCF-MSC that may indicate intrinsic changes in MSC after viral transduction. About 80 miRNAs were downregulated in EVs from both SCF- or GFP-MSC. We assembled the miRNA-based network and found several nodes of target genes among which Vim Sept3 and Vsnl1 are involved in regulation of cellular migration that is consistent with our previous EVs data. Topological analyses of the network also revealed that among the downregulated miRNA-rno-miRNA-128-3p that regulates plenty of targets is presumably associated with chemokine signaling pathways. Overall, our data suggest that genetic modification of MSC has a great impact on their miRNA composition and provide novel insights into the regulatory networks underlying EV effects.
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Affiliation(s)
- Ekaterina Zubkova
- Federal State Budgetary Institution (FSBI), "National Medical Research Center of Cardiology," Ministry of Health of the Russian Federation, Moscow, Russia
| | | | - Irina Beloglazova
- Federal State Budgetary Institution (FSBI), "National Medical Research Center of Cardiology," Ministry of Health of the Russian Federation, Moscow, Russia
| | - German Osmak
- Federal State Budgetary Institution (FSBI), "National Medical Research Center of Cardiology," Ministry of Health of the Russian Federation, Moscow, Russia
| | | | - Alexander Moschenko
- Federal Center of Brain Research and Neurotechnologies, Federal Medical Biological Agency, Moscow, Russia
| | - Mikhail Menshikov
- Federal State Budgetary Institution (FSBI), "National Medical Research Center of Cardiology," Ministry of Health of the Russian Federation, Moscow, Russia
| | - Yelena Parfyonova
- Federal State Budgetary Institution (FSBI), "National Medical Research Center of Cardiology," Ministry of Health of the Russian Federation, Moscow, Russia
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Role of Exosomal MicroRNAs and Their Crosstalk with Oxidative Stress in the Pathogenesis of Osteoporosis. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:6301433. [PMID: 34336108 PMCID: PMC8315851 DOI: 10.1155/2021/6301433] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/23/2021] [Revised: 06/24/2021] [Accepted: 07/02/2021] [Indexed: 12/12/2022]
Abstract
Osteoporosis (OP) is an aging-related disease involving permanent bone tissue atrophy. Most patients with OP show high levels of oxidative stress (OS), which destroys the microstructure of bone tissue and promotes disease progression. Exosomes (exos) help in the delivery of microRNAs (miRNAs) and allow intercellular communication. In OP, exosomal miRNAs modulate several physiological processes, including the OS response. In the present review, we aim to describe how exosomal miRNAs and OS contribute to OP. We first summarize the relationship of OS with OP and then detail the features of exos along with the functions of exo-related miRNAs. Further, we explore the interplay between exosomal miRNAs and OS in OP and summarize the functional role of exos in OP. Finally, we identify the advantages of exo-based miRNA delivery in treatment strategies for OP. Our review seeks to improve the current understanding of the mechanism underlying OP pathogenesis and lay the foundation for the development of novel theranostic approaches for OP.
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28
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Koscianska E, Kozlowska E, Fiszer A. Regulatory Potential of Competing Endogenous RNAs in Myotonic Dystrophies. Int J Mol Sci 2021; 22:6089. [PMID: 34200099 PMCID: PMC8201210 DOI: 10.3390/ijms22116089] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Revised: 05/28/2021] [Accepted: 06/02/2021] [Indexed: 02/06/2023] Open
Abstract
Non-coding RNAs (ncRNAs) have been reported to be implicated in cell fate determination and various human diseases. All ncRNA molecules are emerging as key regulators of diverse cellular processes; however, little is known about the regulatory interaction among these various classes of RNAs. It has been proposed that the large-scale regulatory network across the whole transcriptome is mediated by competing endogenous RNA (ceRNA) activity attributed to both protein-coding and ncRNAs. ceRNAs are considered to be natural sponges of miRNAs that can influence the expression and availability of multiple miRNAs and, consequently, the global mRNA and protein levels. In this review, we summarize the current understanding of the role of ncRNAs in two neuromuscular diseases, myotonic dystrophy type 1 and 2 (DM1 and DM2), and the involvement of expanded CUG and CCUG repeat-containing transcripts in miRNA-mediated RNA crosstalk. More specifically, we discuss the possibility that long repeat tracts present in mutant transcripts can be potent miRNA sponges and may affect ceRNA crosstalk in these diseases. Moreover, we highlight practical information related to innovative disease modelling and studying RNA regulatory networks in cells. Extending knowledge of gene regulation by ncRNAs, and of complex regulatory ceRNA networks in DM1 and DM2, will help to address many questions pertinent to pathogenesis and treatment of these disorders; it may also help to better understand general rules of gene expression and to discover new rules of gene control.
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Affiliation(s)
- Edyta Koscianska
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, 61-704 Poznan, Poland; (E.K.); (A.F.)
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