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Elkhawaga SY, Ismail A, Elsakka EGE, Doghish AS, Elkady MA, El-Mahdy HA. miRNAs as cornerstones in adipogenesis and obesity. Life Sci 2023; 315:121382. [PMID: 36639051 DOI: 10.1016/j.lfs.2023.121382] [Citation(s) in RCA: 59] [Impact Index Per Article: 59.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 01/06/2023] [Accepted: 01/07/2023] [Indexed: 01/12/2023]
Abstract
In recent decades, obesity has extensively emerged to the level of pandemics. It's significantly associated with serious co-morbidities that could decrease life quality and even life expectancy. Obesity has several determinants, such as age, sex, endocrine, and genetic factors. The miRNAs have emerged as genetic factors affecting obesity. The miRNAs are small noncoding nucleic acids that can modify gene expression and hence, control biological processes. The miRNAs can greatly affect many biological processes in obesity, such as adipogenesis, lipid metabolism, and homeostasis. As a result, the entry of miRNAs in obesity therapeutic approaches has been strongly advised as miRNAs mimics, inhibitors, and stimulators. Hence, this review aims to point out a summarized and updated overview of miRNAs and their roles in obesity and its included processes, such as adipogenesis and lipid metabolism. Besides, we also review recent applications of miRNAs as a treatment approach for obesity.
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Affiliation(s)
- Samy Y Elkhawaga
- Biochemistry and Molecular Biology Department, Faculty of Pharmacy (Boys), Al-Azhar University, Nasr City 11231, Cairo, Egypt
| | - Ahmed Ismail
- Biochemistry and Molecular Biology Department, Faculty of Pharmacy (Boys), Al-Azhar University, Nasr City 11231, Cairo, Egypt
| | - Elsayed G E Elsakka
- Biochemistry and Molecular Biology Department, Faculty of Pharmacy (Boys), Al-Azhar University, Nasr City 11231, Cairo, Egypt.
| | - Ahmed S Doghish
- Department of Biochemistry, Faculty of Pharmacy, Badr University in Cairo (BUC), Badr City, Cairo 11829, Egypt.
| | - Mohamed A Elkady
- Biochemistry and Molecular Biology Department, Faculty of Pharmacy (Boys), Al-Azhar University, Nasr City 11231, Cairo, Egypt
| | - Hesham A El-Mahdy
- Biochemistry and Molecular Biology Department, Faculty of Pharmacy (Boys), Al-Azhar University, Nasr City 11231, Cairo, Egypt
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2
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Kmiołek T, Paradowska-Gorycka A. miRNAs as Biomarkers and Possible Therapeutic Strategies in Rheumatoid Arthritis. Cells 2022; 11:cells11030452. [PMID: 35159262 PMCID: PMC8834522 DOI: 10.3390/cells11030452] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 01/10/2022] [Accepted: 01/26/2022] [Indexed: 02/07/2023] Open
Abstract
Within the past years, more and more attention has been devoted to the epigenetic dysregulation that provides an additional window for understanding the possible mechanisms involved in the pathogenesis of autoimmune rheumatic diseases. Rheumatoid arthritis (RA) is a heterogeneous disease where a specific immunologic and genetic/epigenetic background is responsible for disease manifestations and course. In this field, microRNAs (miRNA; miR) are being identified as key regulators of immune cell development and function. The identification of disease-associated miRNAs will introduce us to the post-genomic era, providing the real probability of manipulating the genetic impact of autoimmune diseases. Thereby, different miRNAs may be good candidates for biomarkers in disease diagnosis, prognosis, treatment and other clinical applications. Here, we outline not only the role of miRNAs in immune and inflammatory responses in RA, but also present miRNAs as diagnostic/prognostic biomarkers. Research into miRNAs is still in its infancy; however, investigation into these novel biomarkers could progress the use of personalized medicine in RA treatment. Finally, we discussed the possibility of miRNA-based therapy in RA patients, which holds promise, given major advances in the therapy of patients with inflammatory arthritis.
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3
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Borum RM, Jokerst JV. Hybridizing clinical translatability with enzyme-free DNA signal amplifiers: recent advances in nucleic acid detection and imaging. Biomater Sci 2021; 9:347-366. [PMID: 32734995 PMCID: PMC7855509 DOI: 10.1039/d0bm00931h] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Nucleic acids have become viable prognostic and diagnostic biomarkers for a diverse class of diseases, particularly cancer. However, the low femtomolar to attomolar concentration of nucleic acids in human samples require sensors with excellent detection capabilities; many past and current platforms fall short or are economically difficult. Strand-mediated signal amplifiers such as hybridization chain reaction (HCR) and catalytic hairpin assembly (CHA) are superior methods for detecting trace amounts of biomolecules because one target molecule triggers the continuous production of synthetic double-helical DNA. This cascade event is highly discriminatory to the target via sequence specificity, and it can be coupled with fluorescence, electrochemistry, magnetic moment, and electrochemiluminescence for signal reporting. Here, we review recent advances in enhancing the sensing abilities in HCR and CHA for improved live-cell imaging efficiency, lowered limit of detection, and optimized multiplexity. We further outline the potential for clinical translatability of HCR and CHA by summarizing progress in employing these two tools for in vivo imaging, human sample testing, and sensing-treating dualities. We finally discuss their future prospects and suggest clinically-relevant experiments to supplement further related research.
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Affiliation(s)
- Raina M Borum
- Department of NanoEngineering, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093, USA.
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4
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miRNA as promising theragnostic biomarkers for predicting radioresistance in cancer: A systematic review and meta-analysis. Crit Rev Oncol Hematol 2020; 157:103183. [PMID: 33310279 DOI: 10.1016/j.critrevonc.2020.103183] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Revised: 11/17/2020] [Accepted: 11/23/2020] [Indexed: 02/08/2023] Open
Abstract
Radioresistance remains as an obstacle in cancer treatment. This systematic review and meta-analysis aimed to evaluate the association between the expression of miRNAs and responses to radiotherapy and the prognosis of different tumors. In total, 77 miRNAs in 19 cancer types were studied, in which 24 miRNAs were upregulated and 58 miRNAs were downregulated in cancer patients. Five miRNAs were differentially expressed. Moreover, 75 miRNAs were found to be related to radioresistance, while 5 were observed to be related to radiosensitivity. The pooled HR and 95 % confidence interval for the combined studies was 1.135 (0.819-1.574; P-value = 0.4). The HR values of the subgroup analysis for miR-21 (HR = 2.344; 95 % CI: 1.927-2.850; P-value = 0.000), nasopharyngeal carcinoma (HR = 0.448; 95 % CI: 0.265-0.760; P = 0.003) and breast cancer (HR = 1.131; 95 % CI: 0.311-4.109; P = .85) were obtained. Our results highlighted that across the published literature, miRNAs can modulate tumor radioresistance or sensitivity by affecting radiation-related signaling pathways. It seems that miRNAs could be considered as a theragnostic biomarker to predict and monitor clinical response to radiotherapy. Thus, the prediction of radioresistance in malignant patients will improve radiotherapy outcomes and radiotherapeutic resistance.
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5
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Quero L, Tiaden AN, Hanser E, Roux J, Laski A, Hall J, Kyburz D. miR-221-3p Drives the Shift of M2-Macrophages to a Pro-Inflammatory Function by Suppressing JAK3/STAT3 Activation. Front Immunol 2020; 10:3087. [PMID: 32047494 PMCID: PMC6996464 DOI: 10.3389/fimmu.2019.03087] [Citation(s) in RCA: 77] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Accepted: 12/17/2019] [Indexed: 12/13/2022] Open
Abstract
Objectives: Macrophages are conventionally classified as pro-inflammatory (M1) and anti-inflammatory (M2) functional types. There is evidence for a predominance of macrophages with an inflammatory phenotype (M1) in the rheumatoid arthritis (RA) synovium. MicroRNAs (miRs) play a pivotal role in regulating the inflammatory response in innate immune cells and are found at dysregulated levels in RA patients. Here we explored miRs that tune the inflammatory function of M2-macrophages. Methods: Expression profiles of miR-221-3p and miR-155-5p were analyzed in clinical samples from RA, other inflammatory arthritis (OIA), osteoarthritis (OA), and healthy donors (HD) by qPCR. In vitro generated macrophages were transfected with miR-mimics and inhibitors. Transcriptome profiling through RNA-sequencing was performed on M2-macrophages overexpressing miR-221-3p mimic with or without LPS treatment. Secretion of IL-6, IL-10, IL-12, IL-8, and CXCL13 was measured in M1- and M2-macrophages upon TLR2/TLR3/TLR4-stimulation using ELISA. Inflammatory pathways including NF-κB, IRF3, MAPKs, and JAK3/STAT3 were evaluated by immunoblotting. Direct target interaction of miR-221-3p and predicted target sites in 3'UTR of JAK3 were examined by luciferase reporter gene assay. Results: miR-221-3p in synovial tissue and fluid was increased in RA vs. OA or OIA. Endogenous expression levels of miR-221-3p and miR-155-5p were higher in M1- than M2-macrophages derived from RA patients or HD. TLR4-stimulation of M1- and M2-macrophages resulted in downregulation of miR-221-3p, but upregulation of miR-155-5p. M2-macrophages transfected with miR-221-3p mimics secreted less IL-10 and CXCL13 but more IL-6 and IL-8, exhibited downregulation of JAK3 protein and decreased pSTAT3 activation. JAK3 was identified as new direct target of miR-221-3p in macrophages. Co-transfection of miR-221-3p/miR-155-5p mimics in M2-macrophages increased M1-specific IL-12 secretion. Conclusions: miR-221-3p acts as a regulator of TLR4-induced inflammatory M2-macrophage function by directly targeting JAK3. Dysregulated miR-221-3p expression, as seen in synovium of RA patients, leads to a diminished anti-inflammatory response and drives M2-macrophages to exhibit a M1-cytokine profile.
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Affiliation(s)
- Lilian Quero
- Experimental Rheumatology, University Hospital Basel, Basel, Switzerland.,Department of Biomedicine, University of Basel, Basel, Switzerland
| | - André N Tiaden
- Experimental Rheumatology, University Hospital Basel, Basel, Switzerland.,Department of Biomedicine, University of Basel, Basel, Switzerland
| | - Edveena Hanser
- Experimental Rheumatology, University Hospital Basel, Basel, Switzerland.,Department of Biomedicine, University of Basel, Basel, Switzerland
| | - Julien Roux
- Bioinformatics Core Facility, Department of Biomedicine, University of Basel, Basel, Switzerland.,Bioinformatic Core Facility, Swiss Institute of Bioinformatics, Lausanne, Switzerland
| | - Artur Laski
- Department of Chemistry and Applied Biosciences, Institute of Pharmaceutical Sciences, ETH Zurich, Zurich, Switzerland
| | - Jonathan Hall
- Department of Chemistry and Applied Biosciences, Institute of Pharmaceutical Sciences, ETH Zurich, Zurich, Switzerland
| | - Diego Kyburz
- Experimental Rheumatology, University Hospital Basel, Basel, Switzerland.,Department of Biomedicine, University of Basel, Basel, Switzerland
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6
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Bartoszewski R, Sikorski AF. Editorial focus: understanding off-target effects as the key to successful RNAi therapy. Cell Mol Biol Lett 2019; 24:69. [PMID: 31867046 PMCID: PMC6902517 DOI: 10.1186/s11658-019-0196-3] [Citation(s) in RCA: 81] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Accepted: 12/03/2019] [Indexed: 12/21/2022] Open
Abstract
With the first RNA interference (RNAi) drug (ONPATTRO (patisiran)) on the market, we witness the RNAi therapy field reaching a critical turning point, when further improvements in drug candidate design and delivery pipelines should enable fast delivery of novel life changing treatments to patients. Nevertheless, ignoring parallel development of RNAi dedicated in vitro pharmacological profiling aiming to identify undesirable off-target activity may slow down or halt progress in the RNAi field. Since academic research is currently fueling the RNAi development pipeline with new therapeutic options, the objective of this article is to briefly summarize the basics of RNAi therapy, as well as to discuss how to translate basic research into better understanding of related drug candidate safety profiles early in the process.
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Affiliation(s)
- Rafal Bartoszewski
- Department of Biology and Pharmaceutical Botany, Medical University of Gdansk, Gdansk, Poland
| | - Aleksander F. Sikorski
- Department of Cytobiochemistry, Faculty of Biotechnology, University of Wroclaw, Wroclaw, Poland
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7
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Abstract
Obesity is a complex condition that is characterized by excessive fat accumulation, which can lead to the development of metabolic disorders, such as type 2 diabetes mellitus, nonalcoholic fatty liver disease and cardiovascular diseases. Evidence is accumulating that circulating microRNAs (miRNAs) act as a new class of endocrine factor. These miRNAs are released by many types of tissue, including adipose tissues. miRNAs might serve as endocrine and paracrine messengers that facilitate communication between donor cells and tissues with receptor cells or target tissues, thereby potentially having important roles in metabolic organ crosstalk. Moreover, many miRNAs are closely associated with the differentiation of adipocytes and are dysregulated in obesity. As such, circulating miRNAs are attractive potential biomarkers and hold promise for the development of miRNA-based therapeutics (such as miRNA mimetics, anti-miRNA oligonucleotides and exosomes loaded with miRNA) for obesity and related disorders. Here we review the latest research progress on the roles of circulating miRNAs in metabolic organ crosstalk. In addition, we discuss the clinical potential of circulating miRNAs as feasible biomarkers for the assessment of future risk of metabolic disorders and as therapeutic targets in obesity and related diseases.
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Affiliation(s)
- Chenbo Ji
- Maternity and Child Health Care Institute, Women's Hospital of Nanjing Medical University (Nanjing Maternity and Child Health Care Hospital), Nanjing, China.
| | - Xirong Guo
- Maternity and Child Health Care Institute, Women's Hospital of Nanjing Medical University (Nanjing Maternity and Child Health Care Hospital), Nanjing, China.
- Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
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8
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Marshall EA, Stewart GL, Sage AP, Lam WL, Brown CJ. Beyond sequence homology: Cellular biology limits the potential of XIST to act as a miRNA sponge. PLoS One 2019; 14:e0221371. [PMID: 31419261 PMCID: PMC6697314 DOI: 10.1371/journal.pone.0221371] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Accepted: 08/05/2019] [Indexed: 01/13/2023] Open
Abstract
Introduction The sponging of microRNAs by a long non-coding RNA (lncRNA) away from their coding gene targets is a conceptually-simple, yet biologically-complex method of lncRNA-mediated gene regulation. Currently, predictions of genes that participate in sponge-based regulation are largely based on sequence homology alone, which may not adequately reflect the cellular environment in which lncRNA:miRNA pairs interact. The vast number of potential interactions generated by these predictions impedes the identification of functional gene regulatory relationships, which necessitates an approach that considers biological context. XIST, the female-specific lncRNA canonically involved in silencing the X chromosome, has been suggested by many studies to act as a miRNA sponge. The sex-specificity of XIST provides the opportunity to study the biological feasibility of proposed XIST-miRNA interactions. Here we take a comprehensive approach by considering factors that affect possible regulation through XIST-miRNA sponging. Results To identify the most feasible candidates in a particular tissue (lung adenocarcinomas), we considered protein-coding genes that (1) were positively correlated with XIST expression within sexes, (2) were targeted by miRNAs shared with XIST, and (3) expressed in lung adenocarcinoma. This revealed a robust set of 124 genes potentially positively regulated by XIST through the sequestration of 804 shared miRNAs. We then used the basic sex-specific nature of XIST to compare the changes in miRNA-target gene relationships in endogenously high-XIST and low-XIST systems to discover a high-confidence set of only 13 miRNA-gene pairs. As XIST is expressed exclusively in the nucleus, we validated the nuclear presence of several of these high-confidence miRNAs using RT-qPCR, confirming the co-localization required for XIST to interact with these species. Conclusions We use a biology-driven approach to identify genes defended from miRNA-based inhibition by the lncRNA XIST. Importantly, we identify that only a small subset of miRNAs predicted by sequence homology alone have the capacity to mediate the XIST-target gene axis, as they are enriched in the nucleus and able to co-localize with XIST for sponging. Our results reinforce the necessary consideration of biological features in future studies of lncRNA:miRNA interactions.
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Affiliation(s)
- Erin A. Marshall
- Department of Integrative Oncology, BC Cancer Research Centre, Vancouver, Canada
- Interdisciplinary Oncology Program, University of British Columbia, Vancouver, Canada
- * E-mail:
| | - Greg L. Stewart
- Department of Integrative Oncology, BC Cancer Research Centre, Vancouver, Canada
- Interdisciplinary Oncology Program, University of British Columbia, Vancouver, Canada
| | - Adam P. Sage
- Department of Integrative Oncology, BC Cancer Research Centre, Vancouver, Canada
- Interdisciplinary Oncology Program, University of British Columbia, Vancouver, Canada
| | - Wan L. Lam
- Department of Integrative Oncology, BC Cancer Research Centre, Vancouver, Canada
- Interdisciplinary Oncology Program, University of British Columbia, Vancouver, Canada
| | - Carolyn J. Brown
- Department of Integrative Oncology, BC Cancer Research Centre, Vancouver, Canada
- Department of Medical Genetics, University of British Columbia, Vancouver, Canada
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9
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Micro-RNAs in inflammatory arthritis: From physiopathology to diagnosis, prognosis and therapeutic opportunities. Biochem Pharmacol 2019; 165:134-144. [PMID: 30825433 DOI: 10.1016/j.bcp.2019.02.031] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Accepted: 02/26/2019] [Indexed: 12/12/2022]
Abstract
Micro-RNAs are an area of research exponentially expanding over the past years. These small sequences of 20-22 nucleotides have a strong role as post-transcriptional regulators of gene expression. Inflammatory arthritis pathophysiology involves various key players from innate to adaptive immunity, as well as various signalling pathways of inflammation. In this review, we discuss how micro-RNAs are involved in rheumatoid arthritis, psoriatic arthritis, ankylosing spondylitis and juvenile inflammatory arthritis, from pre-clinical phases to established diseases. We describe mi-RNAs key roles in fibroblast like synoviocytes migration, proliferation, apoptosis and cytokine production, in macrophages polarization, as well as in B cells and T cell proliferation and differentiation, with a special emphasis on Treg/Th17 imbalance. We finally discuss the application of these findings in pre-clinical models and highlight opportunities and limits of a therapeutic approach using mi-RNAs agonists or antagonists.
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10
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Pockar S, Globocnik Petrovic M, Peterlin B, Vidovic Valentincic N. MiRNA as biomarker for uveitis - A systematic review of the literature. Gene 2019; 696:162-175. [PMID: 30763668 DOI: 10.1016/j.gene.2019.02.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Revised: 01/13/2019] [Accepted: 02/01/2019] [Indexed: 12/20/2022]
Abstract
AIM A systematic review of miRNA profiling studies in uveitis. METHODS Literature search strategy - Pubmed central central database, using miRNA/microRNA and intraocular inflammation/uveitis as keywords. RESULTS We found twenty publications regarding the experimental and clinical use of miRNA in uveitis, published between 2011 and 2018. CONCLUSION The publications regarding the role of miRNA in uveitis are very scarce, but provide some valuable information about the potential new mechanisms in uveitis. Some of the identified miRNAs in different uveitis entities could serve as a biomarker of intraocular inflammation. Possible candidate miRNAs could be let-7e, miRNA-1, miR-9-3, miR-20a-5p, miR-23a, mir-29a-3p, miR-140-5p, miR-143, miR-146a and miR-146a-5p, miR-155, miR-182 and miR-182-5p, miR-196a2, miR-205, miR-223-3p, miR-301a. MiR-146a, miR-146a-5p, miR-155, miR-182, miR-223-3p, have been found to be possibly associated with uveitis disease in both, human and animal species.
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Affiliation(s)
- Sasa Pockar
- Eye Hospital, University Medical Centre Ljubljana, Ljubljana, Slovenia
| | - Mojca Globocnik Petrovic
- Eye Hospital, University Medical Centre Ljubljana, Ljubljana, Slovenia; Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Borut Peterlin
- Clinical Institute of Medical Genetics, University Medical Centre Ljubljana, Ljubljana, Slovenia
| | - Natasa Vidovic Valentincic
- Eye Hospital, University Medical Centre Ljubljana, Ljubljana, Slovenia; Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia.
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11
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Fathollahi A, Aslani S, Jamshidi A, Mahmoudi M. Epigenetics in osteoarthritis: Novel spotlight. J Cell Physiol 2019; 234:12309-12324. [DOI: 10.1002/jcp.28020] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Accepted: 11/30/2018] [Indexed: 12/24/2022]
Affiliation(s)
- Anwar Fathollahi
- Department of Immunology School of Medicine, Shahid Beheshti University of Medical Sciences Tehran Iran
- Rheumatology Research Center, Tehran University of Medical Sciences Tehran Iran
| | - Saeed Aslani
- Rheumatology Research Center, Tehran University of Medical Sciences Tehran Iran
| | - Ahmadreza Jamshidi
- Rheumatology Research Center, Tehran University of Medical Sciences Tehran Iran
| | - Mahdi Mahmoudi
- Rheumatology Research Center, Tehran University of Medical Sciences Tehran Iran
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12
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Sanctuary MR, Huang RH, Jones AA, Luck ME, Aherne CM, Jedlicka P, de Zoeten EF, Collins CB. miR-106a deficiency attenuates inflammation in murine IBD models. Mucosal Immunol 2019; 12:200-211. [PMID: 30327532 PMCID: PMC6301105 DOI: 10.1038/s41385-018-0091-7] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 08/14/2018] [Accepted: 09/06/2018] [Indexed: 02/07/2023]
Abstract
Pro-inflammatory cytokine TNFα antagonizes regulatory T cell (Treg) suppressive function with a measurable reduction of IL-10 protein secretion. Tregs are critical to suppress excessive immune activation, particularly within the intestine where high antigenic loads elicit chronic subclinical immune activation. Employing a TNFα-driven murine inflammatory bowel disease (IBD) model (TNFΔARE/+), which mirrors the Treg expansion and transmural ileitis seen in Crohn's disease, we demonstrate that the TNFα-mediated loss of Treg suppressive function coincides with induction of a specific miRNA, miR-106a in both humans and mice, via NFκB promoter binding to suppress post-transcriptional regulation of IL-10 release. Elevation of miR-106a and impaired Treg function in this model recapitulate clinical data from IBD patients. MiR-106a deficiency promotes Treg induction, suppressive function and IL-10 production in vitro. MiR-106a knockout attenuated chronic murine ileitis, whereas T cell restricted deficiency of miR-106a attenuated adoptive transfer colitis. In both models, attenuated inflammation coincided with suppression of both Th1 and Th17 cell subset expansion within the intestinal lamina propria. Collectively, our data demonstrate impaired Treg suppressive function in a murine IBD model consistent with human disease and support the potential for inhibition of miR-106a as a future therapeutic approach to treat chronic inflammatory conditions including IBD.
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Affiliation(s)
- Megan R. Sanctuary
- Department of Pediatrics, Division of Gastroenterology, Hepatology & Nutrition
| | - Rick H. Huang
- Department of Pediatrics, Division of Gastroenterology, Hepatology & Nutrition
| | - Ashleigh A. Jones
- Department of Pediatrics, Division of Gastroenterology, Hepatology & Nutrition
| | - Marisa E. Luck
- Department of Pediatrics, Division of Gastroenterology, Hepatology & Nutrition
| | | | - Paul Jedlicka
- Department of Pathology, University of Colorado, Anschutz Medical Campus, Aurora, CO 80045
| | - Edwin F. de Zoeten
- Department of Pediatrics, Division of Gastroenterology, Hepatology & Nutrition
| | - Colm B. Collins
- Department of Pediatrics, Division of Gastroenterology, Hepatology & Nutrition
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13
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Abdi J, Rashedi I, Keating A. Concise Review: TLR Pathway-miRNA Interplay in Mesenchymal Stromal Cells: Regulatory Roles and Therapeutic Directions. Stem Cells 2018; 36:1655-1662. [PMID: 30171669 DOI: 10.1002/stem.2902] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 07/13/2018] [Accepted: 08/08/2018] [Indexed: 12/12/2022]
Abstract
Mesenchymal stromal cells (MSCs) deploy Toll-like receptors (TLRs) to respond to exogenous and endogenous signals. Activation of TLR pathways in MSCs alters their inflammatory profile and immunomodulatory effects on cells from both the innate and adaptive immune systems. Micro-RNAs (miRNAs), whose expression is modulated by TLR activation, can regulate inflammatory responses by targeting components of the TLR signaling pathways either in MSCs or in the cells with which they interact. Here, we review how the miRNA-TLR pathway axis can regulate the immunomodulatory functions of MSCs, including their interactions with monocytes/macrophages and natural killer cells, and discuss the therapeutic implications for MSC-based therapies. Stem Cells 2018;36:1655-1662.
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Affiliation(s)
- Jahangir Abdi
- Cell Therapy Translational Research Laboratory, University Health Network (UHN), Toronto, Ontario, Canada.,Arthritis Program, Krembil Research Institute, UHN, Toronto, ON, Canada
| | - Iran Rashedi
- Cell Therapy Translational Research Laboratory, University Health Network (UHN), Toronto, Ontario, Canada.,Arthritis Program, Krembil Research Institute, UHN, Toronto, ON, Canada
| | - Armand Keating
- Cell Therapy Translational Research Laboratory, University Health Network (UHN), Toronto, Ontario, Canada.,Arthritis Program, Krembil Research Institute, UHN, Toronto, ON, Canada.,Princess Margaret Cancer Centre, UHN, Toronto, ON, Canada
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14
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Torres JL, Novo-Veleiro I, Manzanedo L, Alvela-Suárez L, Macías R, Laso FJ, Marcos M. Role of microRNAs in alcohol-induced liver disorders and non-alcoholic fatty liver disease. World J Gastroenterol 2018; 24:4104-4118. [PMID: 30271077 PMCID: PMC6158486 DOI: 10.3748/wjg.v24.i36.4104] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 06/25/2018] [Accepted: 06/27/2018] [Indexed: 02/06/2023] Open
Abstract
MicroRNAs (miRNAs) are small non-coding RNAs that regulate multiple physiological and pathological functions through the modulation of gene expression at the post-transcriptional level. Accumulating evidence has established a role for miRNAs in the development and pathogenesis of liver disease. Specifically, a large number of studies have assessed the role of miRNAs in alcoholic liver disease (ALD) and non-alcoholic fatty liver disease (NAFLD), two diseases that share common underlying mechanisms and pathological characteristics. The purpose of the current review is to summarize and update the body of literature investigating the role of miRNAs in liver disease. In addition, the potential use of miRNAs as biomarkers and/or therapeutic targets is discussed. Among all miRNAs analyzed, miR-34a, miR-122 and miR-155 are most involved in the pathogenesis of NAFLD. Of note, these three miRNAs have also been implicated in ALD, reinforcing a common disease mechanism between these two entities and the pleiotropic effects of specific miRNAs. Currently, no single miRNA or panel of miRNAs has been identified for the detection of, or staging of ALD or NAFLD. While promising results have been shown in murine models, no therapeutic based-miRNA agents have been developed for use in humans with liver disease.
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Affiliation(s)
- Jorge-Luis Torres
- Department of Internal Medicine, University Hospital of Salamanca, Institute of Biomedical Research of Salamanca-IBSAL, Salamanca 37007, Spain
- Spanish Working Group on Alcohol and Alcoholism, Spanish Society of Internal Medicine, Madrid 28016, Spain
| | - Ignacio Novo-Veleiro
- Department of Internal Medicine, University Hospital of Santiago de Compostela, A Coruña 15706, Spain
- Spanish Working Group on Alcohol and Alcoholism, Spanish Society of Internal Medicine, Madrid 28016, Spain
| | - Laura Manzanedo
- Department of Internal Medicine, University Hospital of Salamanca, Institute of Biomedical Research of Salamanca-IBSAL, Salamanca 37007, Spain
| | - Lucía Alvela-Suárez
- Department of Internal Medicine, HM Rosaleda Hospital, Santiago de Compostela, A Coruña 15701, Spain
| | - Ronald Macías
- Department of Internal Medicine, University Hospital of Salamanca, Institute of Biomedical Research of Salamanca-IBSAL, Salamanca 37007, Spain
| | - Francisco-Javier Laso
- Department of Internal Medicine, University Hospital of Salamanca, Institute of Biomedical Research of Salamanca-IBSAL, Salamanca 37007, Spain
- Department of Medicine, Faculty of Medicine, University of Salamanca, Salamanca 37007, Spain
- Spanish Working Group on Alcohol and Alcoholism, Spanish Society of Internal Medicine, Madrid 28016, Spain
| | - Miguel Marcos
- Department of Internal Medicine, University Hospital of Salamanca, Institute of Biomedical Research of Salamanca-IBSAL, Salamanca 37007, Spain
- Department of Medicine, Faculty of Medicine, University of Salamanca, Salamanca 37007, Spain
- Spanish Working Group on Alcohol and Alcoholism, Spanish Society of Internal Medicine, Madrid 28016, Spain
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15
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Bartoszewski R, Sikorski AF. Editorial focus: entering into the non-coding RNA era. Cell Mol Biol Lett 2018; 23:45. [PMID: 30250489 PMCID: PMC6145373 DOI: 10.1186/s11658-018-0111-3] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Accepted: 09/12/2018] [Indexed: 12/11/2022] Open
Abstract
Recent developments in high-throughput genotyping technologies have revealed the existence of several new classes of RNA that do not encode proteins but serve other cellular roles. To date, these non-coding RNAs (ncRNAs) have been shown to modulate both gene expression and genome remodeling, thus contributing to the control of both normal and disease-related cellular processes. The attraction of this research topic can be seen in the increasing number of submissions on ncRNAs to molecular biology journals, including Cellular Molecular Biology Letters (CMBL). As researchers attempt to deepen the understanding of the role of ncRNAs in cell biology, it is worth discussing the broader importance of this research.
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Affiliation(s)
- Rafal Bartoszewski
- 1Department of Biology and Pharmaceutical Botany, Medical University of Gdansk, Gdansk, Poland
| | - Aleksander F Sikorski
- 2Department of Cytobiochemistry, Faculty of Biotechnology, University of Wroclaw, Wroclaw, Poland
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16
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MicroRNAs and immunity in periodontal health and disease. Int J Oral Sci 2018; 10:24. [PMID: 30078842 PMCID: PMC6080405 DOI: 10.1038/s41368-018-0025-y] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Revised: 04/08/2018] [Accepted: 04/11/2018] [Indexed: 02/07/2023] Open
Abstract
MicroRNAs (miRNAs) are critical regulators of the host immune and inflammatory response against bacterial pathogens. In the present review, we discuss target genes, target gene functions, the potential regulatory role of miRNAs in periodontal tissues, and the potential role of miRNAs as biomarkers and therapeutics. In periodontal disease, miRNAs exert control over all aspects of innate and adaptive immunity, including the functions of neutrophils, macrophages, dendritic cells and T and B cells. Previous human studies have highlighted some key miRNAs that are dysregulated in periodontitis patients. In the present study, we mapped the major miRNAs that were altered in our reproducible periodontitis mouse model relative to control animals. The miRNAs that were upregulated as a result of periodontal disease in both human and mouse studies included miR-15a, miR-29b, miR-125a, miR-146a, miR-148/148a and miR-223, whereas miR-92 was downregulated. The association of individual miRNAs with unique aspects of periodontal disease and their stability in gingival crevicular fluid underscores their potential as markers for periodontal disease progression or healthy restitution. Moreover, miRNA therapeutics hold great promise for the future of periodontal therapy because of their ability to modulate the immune response to infection when applied in conjunction with synthetic antagomirs and/or relatively straightforward delivery strategies.
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17
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Eichenberger RM, Sotillo J, Loukas A. Immunobiology of parasitic worm extracellular vesicles. Immunol Cell Biol 2018; 96:704-713. [PMID: 29808496 DOI: 10.1111/imcb.12171] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 05/23/2018] [Accepted: 05/24/2018] [Indexed: 12/11/2022]
Abstract
Helminth parasites (worms) have evolved a vast array of strategies to manipulate their vertebrate hosts. Extracellular vesicles (EVs) are secreted by all helminth species investigated thus far, and their salient roles in parasite-host interactions are being revealed. Parasite EVs directly interact with various cell types from their hosts, including immune cells, and roles for their molecular cargo in both regulation and promotion of inflammation in the host have been reported. Despite the growing body of literature on helminth EVs, limited availability of genetic manipulation tools for helminth research has precluded detailed investigation of specific molecular interactions between parasite EVs and host target cells. Here, we review the current state of the field and discuss innovative strategies targeting helminth EVs for the discovery and development of new therapeutic strategies, placing particular emphasis on both anti-helminth vaccines and EV small RNAs for treating noninfectious inflammatory diseases.
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Affiliation(s)
- Ramon M Eichenberger
- Centre for Biodiscovery and Molecular Development of Therapeutics, Australian Institute of Tropical Health and Medicine, James Cook University, Cairns, QLD, 4878, Australia
| | - Javier Sotillo
- Centre for Biodiscovery and Molecular Development of Therapeutics, Australian Institute of Tropical Health and Medicine, James Cook University, Cairns, QLD, 4878, Australia
- ParaGen Bio Laboratories, Australian Institute of Tropical Health and Medicine, James Cook University, Cairns, QLD, 4878, Australia
| | - Alex Loukas
- Centre for Biodiscovery and Molecular Development of Therapeutics, Australian Institute of Tropical Health and Medicine, James Cook University, Cairns, QLD, 4878, Australia
- ParaGen Bio Laboratories, Australian Institute of Tropical Health and Medicine, James Cook University, Cairns, QLD, 4878, Australia
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18
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Park J, Jeong S, Park K, Yang K, Shin S. Expression profile of microRNAs following bone marrow-derived mesenchymal stem cell treatment in lipopolysaccharide-induced acute lung injury. Exp Ther Med 2018; 15:5495-5502. [PMID: 29904430 DOI: 10.3892/etm.2018.6118] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Accepted: 03/23/2018] [Indexed: 12/11/2022] Open
Abstract
Immunomodulatory or immunosuppressive properties of bone marrow-derived mesenchymal stem cells (BM-MSCs) facilitate the treatment of acute respiratory distress syndrome and acute lung injury (ALI). Dysregulated miRNA (miRNA or miR) expression associated with the effects of BM-MSCs was assessed in a rat model of lipopolysaccharide (LPS)-induced ALI. The present study performed biochemical tests to assess five analytes, including alanine aminotransferase (ALT), aspartate aminotransferase (AST), lactate, blood urea nitrogen (BUN), and creatinine (CREA). Total cell count was assessed and the percentage of bronchoalveolar lavage neutrophil content was also examined. The results Histopathological examination of rat upper lobe lung tissue was then used to estimate lung injury score (LIS). The levels of AST, lactate, BUN and creatinine (excluding ALT), released into the circulation upon injury, were significantly lower in ALI rats treated with BM-MSCs than in ALI rats alone (P<0.05). BM-MSC rats exhibited a significantly decreased bronchoalveolar lavage neutrophil percentage and LIS compared with that of LPS treated rats alone (P<0.05). In addition, the miRNA expression profile was determined following treatment with BM-MSCs via microarray analysis. A total of 95/690 miRNAs were differentially expressed following the treatment of BM-MSCs in rats with ALI. Among the 95 miRNAs, 66 were upregulated and 29 were downregulated; 9 miRNAs were significantly upregulated (miR-1843-3p, miR-323-3p, miR-183-5p, miR-182 and miR-196b-3p) or downregulated (miR-547-3p, miR-301b-5p, miR-503-3p and miR-142-3p). A total of 3 miRNAs were inversely expressed in ALI treated with BM-MSCs compared with untreated ALI. Of these 3 miRNAs, the expression of miR-142-3p and miR-503-3p was upregulated in the LPS groups and downregulated in the BM-MSC groups. miR-196b-3p was downregulated in the LPS group and upregulated in the BM-MSC groups. miRNAs have a role in cell proliferation, immune response, inflammation and apoptosis, which may be associated with the therapeutic effects of BM-MSCs in ALI. In summary, BM-MSCs improved multi-organ damage and attenuated lung injury. Different miRNA profiles were expressed following BM-MSC treatment of ALI. These dysregulated miRNAs participated in BM-MSC-mediated immunomodulation of ALI.
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Affiliation(s)
- Joonhong Park
- Department of Laboratory Medicine, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
| | - Sikyoung Jeong
- Department of Emergency Medicine, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
| | - Kicheol Park
- Clinical Research Institute, Daejeon St. Mary's Hospital, The Catholic University of Korea, Daejeon 34943, Republic of Korea
| | - Keumjin Yang
- Clinical Research Institute, Daejeon St. Mary's Hospital, The Catholic University of Korea, Daejeon 34943, Republic of Korea
| | - Soyoung Shin
- Department of Laboratory Medicine, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
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19
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Hippen KL, Loschi M, Nicholls J, MacDonald KPA, Blazar BR. Effects of MicroRNA on Regulatory T Cells and Implications for Adoptive Cellular Therapy to Ameliorate Graft-versus-Host Disease. Front Immunol 2018; 9:57. [PMID: 29445371 PMCID: PMC5797736 DOI: 10.3389/fimmu.2018.00057] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Accepted: 01/09/2018] [Indexed: 01/15/2023] Open
Abstract
Regulatory T cells (Tregs) are key mediators of the immune system. MicroRNAs (miRNAs) are a family of ~22 nucleotide non-coding RNAs that are processed from longer precursors by the RNases Drosha and Dicer. miRNA regulates protein expression posttranscriptionally through mRNA destabilization or translational silencing. A critical role for miRNA in Treg function was initially discovered when both Dicer and Drosha knockout (KO) mice were found to develop a fatal autoimmune disease phenotypically similar to Foxp3 KO mice.
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Affiliation(s)
- Keli L Hippen
- Department of Pediatrics, Division of Blood and Marrow Transplantation, University of Minnesota Cancer Center, Minneapolis, MN, United States
| | - Michael Loschi
- Department of Pediatrics, Division of Blood and Marrow Transplantation, University of Minnesota Cancer Center, Minneapolis, MN, United States
| | - Jemma Nicholls
- Department of Pediatrics, Division of Blood and Marrow Transplantation, University of Minnesota Cancer Center, Minneapolis, MN, United States
| | - Kelli P A MacDonald
- The Antigen Presentation and Immunoregulation Laboratory and Bone Marrow Transplantation Laboratory, QIMR Berghofer Medical Research Institute, University of Minnesota Cancer Center, Brisbane, QLD, Australia
| | - Bruce R Blazar
- Department of Pediatrics, Division of Blood and Marrow Transplantation, University of Minnesota Cancer Center, Minneapolis, MN, United States
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20
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Abstract
The rising toll of chronic and debilitating diseases brought about by the exposure to an ever expanding number of environmental pollutants and socio-economic factors is calling for action. The understanding of the molecular mechanisms behind the effects of environmental exposures can lead to the development of biomarkers that can support the public health fields of both early diagnosis and intervention to limit the burden of environmental diseases. The study of mitochondrial epigenetics carries high hopes to provide important biomarkers of exposure and disease. Mitochondria are in fact on the frontline of the cellular response to the environment. Modifications of the epigenetic factors regulating the mitochondrial activity are emerging as informative tools that can effectively report on the effects of the environment on the phenotype. Here, we will discuss the emerging field of mitochondrial epigenetics. This review describes the main epigenetic phenomena that modify the activity of the mitochondrial DNA including DNA methylation, long and short non-coding RNAs. We will discuss the unique pattern of mitochondrial DNA methylation, describe the challenges of correctly measuring it, and report on the existing studies that have analysed the correlation between environmental exposures and mitochondrial DNA methylation. Finally, we provide a brief account of the therapeutic approaches targeting mitochondria currently under consideration.
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Affiliation(s)
- Luca Lambertini
- Department of Preventive Medicine, Icahn School of Medicine at Mount Sinai, One Gustave L. Levi Place, Box 1057, New York, NY, 10029, USA. .,Department of Obstetrics, Gynecology and Reproductive Science, Icahn School of Medicine at Mount Sinai, One Gustave L. Levi Place, Box 1057, New York, NY, 10029, USA.
| | - Hyang-Min Byun
- Human Nutrition Research Centre, Institute of Cellular Medicine, Newcastle University, Biomedical Research Building, Campus for Ageing and Vitality, Newcastle upon Tyne, UK.,Ageing Research Laboratory, Newcastle University, Campus for Ageing and Vitality, Edwardson Building, Newcastle upon Tyne, NE4 5PL, UK
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21
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Jasinski-Bergner S, Reches A, Stoehr C, Massa C, Gonschorek E, Huettelmaier S, Braun J, Wach S, Wullich B, Spath V, Wang E, Marincola FM, Mandelboim O, Hartmann A, Seliger B. Identification of novel microRNAs regulating HLA-G expression and investigating their clinical relevance in renal cell carcinoma. Oncotarget 2018; 7:26866-78. [PMID: 27057628 PMCID: PMC5042021 DOI: 10.18632/oncotarget.8567] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Accepted: 03/11/2016] [Indexed: 12/18/2022] Open
Abstract
The non-classical human leukocyte antigen G (HLA-G) is expressed at a high frequency in renal cell carcinoma (RCC) and is associated with a higher tumor grade and a poor clinical outcome. This might be caused by the HLA-G-mediated inhibition of the cytotoxicity of T and NK cells. Therefore a selective targeting of HLA-G might represent a powerful strategy to enhance the immunogenicity of RCC lesions. Recent studies identified a number of HLA-G-regulating microRNAs (miRs) and demonstrated an inverse expression of some of these miRs with HLA-G in RCC in vitro and in vivo. However, it was postulated that further miRs might exist contributing to the tightly controlled selective HLA-G expression.By application of a miR enrichment assay (miTRAP) in combination with in silico profiling two novel HLA-G-regulatory miRs, miR-548q and miR-628-5p, were identified. Direct interactions of both miRs with the 3' untranslated region of HLA-G were confirmed with luciferase reporter gene assays. In addition, qPCR analyses and immunohistochemical staining revealed an inverse, expression of miR-628-5p, but not of miR-548q to the HLA-G protein in primary RCC lesions and cell lines. Stable overexpression of miR-548q and miR-628-5p caused a downregulation of HLA-G mRNA and protein. This leads in case of miR-548q to an enhanced NK cell-mediated HLA-G-dependent cytotoxicity, which could be reverted by ILT2 blockade suggesting a control of the immune effector cell activity at least by this miR. The identification of two novel HLA-G-regulatory miRs extends the number of HLA-G-relevant miRs tuning the HLA-G expression and might serve as future therapeutic targets.
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Affiliation(s)
- Simon Jasinski-Bergner
- Institute of Medical Immunology, Martin Luther University Halle-Wittenberg, Halle, Germany
| | - Adi Reches
- Faculty of Medicine, The Hebrew University of Jerusalem, Ein Kerem, Jerusalem, Israel
| | - Christine Stoehr
- Institute of Pathology, Friedrich Alexander University Erlangen-Nuremberg, Erlangen, Germany
| | - Chiara Massa
- Institute of Medical Immunology, Martin Luther University Halle-Wittenberg, Halle, Germany
| | - Evamaria Gonschorek
- Institute of Medical Immunology, Martin Luther University Halle-Wittenberg, Halle, Germany
| | - Stefan Huettelmaier
- Institute of Molecular Medicine, Martin Luther University Halle-Wittenberg, Halle, Germany
| | - Juliane Braun
- Institute of Molecular Medicine, Martin Luther University Halle-Wittenberg, Halle, Germany
| | - Sven Wach
- Clinic of Urology, Friedrich Alexander University Erlangen-Nuremberg, Erlangen, Germany
| | - Bernd Wullich
- Clinic of Urology, Friedrich Alexander University Erlangen-Nuremberg, Erlangen, Germany
| | - Verena Spath
- Faculty of Medicine, The Hebrew University of Jerusalem, Ein Kerem, Jerusalem, Israel
| | - Ena Wang
- Sidra Medical and Research Center, Qatar Foundation, Doha, Qatar
| | | | - Ofer Mandelboim
- Faculty of Medicine, The Hebrew University of Jerusalem, Ein Kerem, Jerusalem, Israel
| | - Arndt Hartmann
- Institute of Pathology, Friedrich Alexander University Erlangen-Nuremberg, Erlangen, Germany
| | - Barbara Seliger
- Institute of Medical Immunology, Martin Luther University Halle-Wittenberg, Halle, Germany
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22
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Kusaoi M, Yamaji K, Ishibe Y, Murayama G, Nemoto T, Sekiya F, Kon T, Ogasawara M, Kempe K, Tamura N, Takasaki Y. Separation of Circulating MicroRNAs Using Apheresis in Patients With Systemic Lupus Erythematosus. Ther Apher Dial 2017; 20:348-53. [PMID: 27523074 DOI: 10.1111/1744-9987.12471] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Indexed: 01/03/2023]
Abstract
MicroRNAs (miRNAs), which are important inhibitors of mRNA translation, participate in differentiation, migration, cell proliferation, and cell death. The pathology of miRNAs results in alterations in protein expression. Recently, miRNAs circulating in peripheral blood have been shown to control the synthesis and translation of proteins at distal sites after intake into local cells. A number of studies are currently being conducted to investigate how to use miRNAs in disease treatment, but no studies have attempted to alleviate disease by directly eliminating miRNAs from blood. Therefore, we examined whether the removal or reduction of circulating miRNAs with apheresis improved pathologies caused by miRNAs. After approval of the study by our medical school's ethics committee, we collected blood and separated plasma samples from three patients with systemic lupus erythematosus who were undergoing plasmapheresis at our hospital. Peripheral blood was collected before and after it was passed through a primary membrane, centrifuged, and used to extract circulating miRNAs. A comprehensive expression analysis was then performed with a miRNA array chip. The levels of expression of a large number of circulating miRNAs were measured in the plasma samples separated by the primary membranes from all 3 patients with systemic lupus erythematosus. We present the first report that circulating miRNAs in peripheral blood can be separated and possibly directly removed using membrane separation apheresis.
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Affiliation(s)
- Makio Kusaoi
- Department of Internal Medicine and Rheumatology, Juntendo University School of Medicine, Tokyo, Japan
| | - Ken Yamaji
- Department of Internal Medicine and Rheumatology, Juntendo University School of Medicine, Tokyo, Japan
| | - Yusuke Ishibe
- Department of Internal Medicine and Rheumatology, Juntendo University School of Medicine, Tokyo, Japan
| | - Go Murayama
- Department of Internal Medicine and Rheumatology, Juntendo University School of Medicine, Tokyo, Japan
| | - Takuya Nemoto
- Department of Internal Medicine and Rheumatology, Juntendo University School of Medicine, Tokyo, Japan
| | - Fumio Sekiya
- Department of Internal Medicine and Rheumatology, Juntendo University School of Medicine, Tokyo, Japan
| | - Takayuki Kon
- Department of Internal Medicine and Rheumatology, Juntendo University School of Medicine, Tokyo, Japan
| | - Michihiro Ogasawara
- Department of Internal Medicine and Rheumatology, Juntendo University School of Medicine, Tokyo, Japan
| | - Kazuo Kempe
- Department of Internal Medicine and Rheumatology, Juntendo University School of Medicine, Tokyo, Japan
| | - Naoto Tamura
- Department of Internal Medicine and Rheumatology, Juntendo University School of Medicine, Tokyo, Japan
| | - Yoshinari Takasaki
- Department of Internal Medicine and Rheumatology, Juntendo University School of Medicine, Tokyo, Japan
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23
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Willinger CM, Rong J, Tanriverdi K, Courchesne PL, Huan T, Wasserman GA, Lin H, Dupuis J, Joehanes R, Jones MR, Chen G, Benjamin EJ, O’Connor GT, Mizgerd JP, Freedman JE, Larson MG, Levy D. MicroRNA Signature of Cigarette Smoking and Evidence for a Putative Causal Role of MicroRNAs in Smoking-Related Inflammation and Target Organ Damage. CIRCULATION. CARDIOVASCULAR GENETICS 2017; 10:e001678. [PMID: 29030400 PMCID: PMC5683429 DOI: 10.1161/circgenetics.116.001678] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Accepted: 07/13/2017] [Indexed: 12/21/2022]
Abstract
BACKGROUND Cigarette smoking increases risk for multiple diseases. MicroRNAs regulate gene expression and may play a role in smoking-induced target organ damage. We sought to describe a microRNA signature of cigarette smoking and relate it to smoking-associated clinical phenotypes, gene expression, and lung inflammatory signaling. METHODS AND RESULTS Expression profiling of 283 microRNAs was conducted on whole blood-derived RNA from 5023 Framingham Heart Study participants (54.0% women; mean age, 55±13 years) using TaqMan assays and high-throughput reverse transcription quantitative polymerase chain reaction. Associations of microRNA expression with smoking status and associations of smoking-related microRNAs with inflammatory biomarkers and pulmonary function were tested with linear mixed effects models. We identified a 6-microRNA signature of smoking. Five of the 6 smoking-related microRNAs were associated with serum levels of C-reactive protein or interleukin-6; miR-1180 was associated with pulmonary function measures at a marginally significant level. Bioinformatic evaluation of smoking-associated genes coexpressed with the microRNA signature of cigarette smoking revealed enrichment for immune-related pathways. Smoking-associated microRNAs altered expression of selected inflammatory mediators in cell culture gain-of-function assays. CONCLUSIONS We characterized a novel microRNA signature of cigarette smoking. The top microRNAs were associated with systemic inflammatory markers and reduced pulmonary function, correlated with expression of genes involved in immune function, and were sufficient to modulate inflammatory signaling. Our results highlight smoking-associated microRNAs and are consistent with the hypothesis that smoking-associated microRNAs serve as mediators of smoking-induced inflammation and target organ damage. These findings call for further mechanistic studies to explore the diagnostic and therapeutic use of smoking-related microRNAs.
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Affiliation(s)
- Christine M. Willinger
- Framingham Heart Study, Framingham, MA
- Division of Intramural Research and Population Sciences Branch, National Heart, Lung, and Blood Institute, Bethesda, MD
| | - Jian Rong
- Framingham Heart Study, Framingham, MA
- Boston University School of Public Health, Boston
| | - Kahraman Tanriverdi
- Department of Medicine and UMass Memorial Heart & Vascular Center, University of Massachusetts Medical School, Worcester
| | - Paul L. Courchesne
- Framingham Heart Study, Framingham, MA
- Division of Intramural Research and Population Sciences Branch, National Heart, Lung, and Blood Institute, Bethesda, MD
| | - Tianxiao Huan
- Framingham Heart Study, Framingham, MA
- Division of Intramural Research and Population Sciences Branch, National Heart, Lung, and Blood Institute, Bethesda, MD
| | | | - Honghuang Lin
- Framingham Heart Study, Framingham, MA
- Boston University School of Medicine
| | - Josée Dupuis
- Framingham Heart Study, Framingham, MA
- Boston University School of Public Health, Boston
| | - Roby Joehanes
- Framingham Heart Study, Framingham, MA
- Division of Intramural Research and Population Sciences Branch, National Heart, Lung, and Blood Institute, Bethesda, MD
- Department of Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA
| | | | - George Chen
- Framingham Heart Study, Framingham, MA
- Division of Intramural Research and Population Sciences Branch, National Heart, Lung, and Blood Institute, Bethesda, MD
| | - Emelia J. Benjamin
- Framingham Heart Study, Framingham, MA
- Boston University School of Public Health, Boston
- Boston University School of Medicine
| | | | | | - Jane E. Freedman
- Department of Medicine and UMass Memorial Heart & Vascular Center, University of Massachusetts Medical School, Worcester
| | - Martin G. Larson
- Framingham Heart Study, Framingham, MA
- Boston University School of Public Health, Boston
| | - Daniel Levy
- Framingham Heart Study, Framingham, MA
- Division of Intramural Research and Population Sciences Branch, National Heart, Lung, and Blood Institute, Bethesda, MD
- Boston University School of Medicine
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24
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Gurol T, Zhou W, Deng Q. MicroRNAs in neutrophils: potential next generation therapeutics for inflammatory ailments. Immunol Rev 2017; 273:29-47. [PMID: 27558326 DOI: 10.1111/imr.12450] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Neutrophils play fundamental roles in both acute and chronic inflammatory conditions, and directly contribute to the immune pathologies in both infectious and autoimmune ailments. MicroRNAs (miRs) regulate homeostasis in health and disease by fine tuning the expression of a network of genes through post-transcriptional regulation. Many miRs are expressed in restricted tissues, regulated by stress and disease, and are emerging as mediators for intercellular communication. MiR profiles have been recently utilized as biomarkers for diagnosis and prognostic purposes. In addition, several miRs are in clinical development for various diseases. A short list of miRs that regulate hematopoiesis and neutrophil development is identified. Unfortunately, very limited information is available regarding how miRs regulate neutrophil migration and activation in vivo. Extensive future work is required, especially in animal models such as mice, to illustrate the pivotal and complex miR-mediated regulatory network. In addition, zebrafish, a vertebrate model organism with conserved innate immunity, potentiated by the availability of imaging and genetic tools, will provide a platform for rapid discovery and characterization of miRs that are relevant to neutrophilic inflammation. Advances in this field are expected to provide the foundation for highly selective miR-based therapy to manipulate neutrophils in infection and inflammatory disorders.
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Affiliation(s)
- Theodore Gurol
- Department of Biological Sciences, Purdue University, West Lafayette, IN, USA
| | - Wenqing Zhou
- Department of Biological Sciences, Purdue University, West Lafayette, IN, USA
| | - Qing Deng
- Department of Biological Sciences, Purdue University, West Lafayette, IN, USA
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25
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Yue J, Wang P, Hong Q, Liao Q, Yan L, Xu W, Chen X, Zheng Q, Zhang L, Huang D. MicroRNA-335-5p Plays Dual Roles in Periapical Lesions by Complex Regulation Pathways. J Endod 2017; 43:1323-1328. [PMID: 28578884 DOI: 10.1016/j.joen.2017.03.018] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Revised: 02/02/2017] [Accepted: 03/12/2017] [Indexed: 02/05/2023]
Abstract
INTRODUCTION MicroRNA-335-5p has been reported to regulate osteogenic and chondrogenic differentiations of mesenchymal stem cells. The aim of this study was to explore the function and regulation mechanism of miR-335-5p in apical periodontitis (AP). METHODS Total RNAs were extracted from human periodontal ligament fibroblasts (HPDLFs), 10 AP tissues, and 6 healthy periodontal ligament tissues using lysis buffer. Gene expression was detected using real-time polymerase chain reaction. The Dual Luciferase Assay (Promega, Madison, WI) was used to test miR-335-5p directly targeted urokinase-type plasminogen activator receptor (uPAR) and the receptor activator of nuclear factor kappa-B ligand (RANKL). Western Blot was used to detect protein expressions of RANKL, uPAR, and the fragile X-related 1 gene (FXR1). The enzyme-linked immunosorbent assay was used to detect the secretions of interleukin 6, tumor necrosis factor alpha, and RANKL. Data were analyzed using the Student t test. RESULTS miR-335-5p acted as a positive mediator in HPDLF inflammation (P < .05). Two targets of miR-335-5p, uPAR and RANKL, were identified. Interestingly, uPAR was repressed by miR-335-5p at the basal level, but it can be relieved from miR-335-5p-mediated repression, which is called derepression, when HPDLFs were subjected to lipopolysaccharide stimulation. miR-335-5p promoted RANKL in HPDLFs regardless of whether or not it was under inflammatory conditions (P < .05). We proved FXR1 was responsible for the derepression of uPAR from miR-335-5p (P < .01). Both FXR1 and uPAR were positive mediators in HPDLF inflammation (P < .05). miR-335-5p, uPAR, RANKL, and FXR1 had the same expression profiles in HPDLF inflammation and AP tissues (P < .05). CONCLUSIONS Our data showed that miR-335-5p may play dual roles in AP, and it might be considered as a target for therapeutic potency in clinical applications.
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Affiliation(s)
- Junli Yue
- State Key Laboratory of Oral Diseases, Department of Endodontics, West China Hospital of Stomatology, Sichuan University, Sichuan, China
| | - Puyu Wang
- State Key Laboratory of Oral Diseases, Department of Endodontics, West China Hospital of Stomatology, Sichuan University, Sichuan, China
| | - Qingchun Hong
- State Key Laboratory of Oral Diseases, Department of Endodontics, West China Hospital of Stomatology, Sichuan University, Sichuan, China
| | - Qian Liao
- State Key Laboratory of Oral Diseases, Department of Endodontics, West China Hospital of Stomatology, Sichuan University, Sichuan, China
| | - Li Yan
- State Key Laboratory of Oral Diseases, Department of Endodontics, West China Hospital of Stomatology, Sichuan University, Sichuan, China
| | - Weizhe Xu
- State Key Laboratory of Oral Diseases, Department of Endodontics, West China Hospital of Stomatology, Sichuan University, Sichuan, China
| | - Xi Chen
- State Key Laboratory of Oral Diseases, Department of Endodontics, West China Hospital of Stomatology, Sichuan University, Sichuan, China
| | - Qinghua Zheng
- State Key Laboratory of Oral Diseases, Department of Endodontics, West China Hospital of Stomatology, Sichuan University, Sichuan, China
| | - Lan Zhang
- State Key Laboratory of Oral Diseases, Department of Endodontics, West China Hospital of Stomatology, Sichuan University, Sichuan, China.
| | - Dingming Huang
- State Key Laboratory of Oral Diseases, Department of Endodontics, West China Hospital of Stomatology, Sichuan University, Sichuan, China.
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26
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Epigenetic aspects of rheumatoid arthritis: contribution of non-coding RNAs. Semin Arthritis Rheum 2017; 46:724-731. [DOI: 10.1016/j.semarthrit.2017.01.003] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Revised: 11/20/2016] [Accepted: 01/13/2017] [Indexed: 01/07/2023]
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27
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Christenson SA, Steiling K. Shifting from Correlation to Causation: Challenges for the Future of Unbiased Molecular Studies in Inflammatory Lung Disease. Am J Respir Crit Care Med 2017; 195:5-7. [PMID: 28035851 DOI: 10.1164/rccm.201608-1751ed] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
| | - Katrina Steiling
- 2 Department of Medicine Boston University School of Medicine Boston, Massachusetts and.,3 Bioinformatics Program Boston University Boston, Massachusetts
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28
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miRNAsong: a web-based tool for generation and testing of miRNA sponge constructs in silico. Sci Rep 2016; 6:36625. [PMID: 27857164 PMCID: PMC5114684 DOI: 10.1038/srep36625] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Accepted: 10/13/2016] [Indexed: 12/13/2022] Open
Abstract
MicroRNA (miRNA) sponges are RNA transcripts containing multiple high-affinity binding sites that associate with and sequester specific miRNAs to prevent them from interacting with their target messenger (m)RNAs. Due to the high specificity of miRNA sponges and strong inhibition of target miRNAs, these molecules have become increasingly applied in miRNA loss-of-function studies. However, improperly designed sponge constructs may sequester off-target miRNAs; thus, it has become increasingly important to develop a tool for miRNA sponge construct design and testing. In this study, we introduce microRNA sponge generator and tester (miRNAsong), a freely available web-based tool for generation and in silico testing of miRNA sponges. This tool generates miRNA sponge constructs for specific miRNAs and miRNA families/clusters and tests them for potential binding to miRNAs in selected organisms. Currently, miRNAsong allows for testing of sponge constructs in 219 species covering 35,828 miRNA sequences. Furthermore, we also provide an example, supplemented with experimental data, of how to use this tool. Using miRNAsong, we designed and tested a sponge for miR-145 inhibition, and cloned the sequence into an inducible lentiviral vector. We found that established cell lines expressing miR-145 sponge strongly inhibited miR-145, thus demonstrating the usability of miRNAsong tool for sponge generation. URL: http://www.med.muni.cz/histology/miRNAsong/.
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29
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Raghuraman S, Donkin I, Versteyhe S, Barrès R, Simar D. The Emerging Role of Epigenetics in Inflammation and Immunometabolism. Trends Endocrinol Metab 2016; 27:782-795. [PMID: 27444065 DOI: 10.1016/j.tem.2016.06.008] [Citation(s) in RCA: 82] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Revised: 06/15/2016] [Accepted: 06/20/2016] [Indexed: 12/12/2022]
Abstract
Recent research developments have shed light on the risk factors contributing to metabolic complications, implicating both genetic and environmental factors, potentially integrated by epigenetic mechanisms. Distinct epigenetic changes in immune cells are frequently observed in obesity and type 2 diabetes mellitus, and these are associated with alterations in the phenotype, function, and trafficking patterns of these cells. The first step in the development of effective therapeutic strategies is the identification of distinct epigenetic signatures associated with metabolic disorders. In this review we provide an overview of the epigenetic mechanisms influencing immune cell phenotype and function, summarize current knowledge about epigenetic changes affecting immune functions in the context of metabolic diseases, and discuss the therapeutic options currently available to counteract epigenetically driven metabolic complications.
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Affiliation(s)
- Sukanya Raghuraman
- Inflammation and Infection Research, School of Medical Sciences, University of New South Wales, Sydney, Australia
| | - Ida Donkin
- The Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Soetkin Versteyhe
- The Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Romain Barrès
- Inflammation and Infection Research, School of Medical Sciences, University of New South Wales, Sydney, Australia; The Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - David Simar
- Inflammation and Infection Research, School of Medical Sciences, University of New South Wales, Sydney, Australia; The Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
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30
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Zhao J, Chen C, Guo M, Tao Y, Cui P, Zhou Y, Qin N, Zheng J, Zhang J, Xu L. MicroRNA-7 Deficiency Ameliorates the Pathologies of Acute Lung Injury through Elevating KLF4. Front Immunol 2016; 7:389. [PMID: 27774091 PMCID: PMC5054040 DOI: 10.3389/fimmu.2016.00389] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Accepted: 09/15/2016] [Indexed: 01/13/2023] Open
Abstract
Recent evidence showed that microRNA-7 (miR-7) played an important role in the pathologies of lung-related diseases. However, the potential role of miR-7 in acute lung injury (ALI) still remains poorly understood. Here, we assessed the effect of miR-7 deficiency on the pathology of ALI. We, first, found that the expression of miR-7 was upregulated in lung tissue in murine LPS-induced ALI model. Notably, we generated miR-7 knock down mice by using miRNA-Sponge technique and found that miR-7 deficiency could ameliorate the pathologies of lung as evidenced by accelerated body weight recovery, reduced level of bronchoalveolar lavage (BAL) proinflammatory cytokines and decreased number of BAL cells in ALI mice. Moreover, the proportion and number of various immune cells in BAL, including innate immune cell F4/80+ macrophages, γδT cells, NK1.1+ T cells, and CD11c+DCs, as well as adaptive immune cell CD4+ T cells and CD8+ T cells, also significantly changed, respectively. Mechanistic evidence showed that KLF4, a target molecule of miR-7, was upregulated in lung tissues in ALI model, accompanied by altered transduction of NF-κB, AKT, and ERK pathway. These data provided a previously unknown role of miR-7 in pathology of ALI, which could ultimately aid the understanding of development of ALI and the development of new therapeutic strategies against clinical inflammatory lung diseases.
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Affiliation(s)
- Juanjuan Zhao
- Department of Immunology, Zunyi Medical College , Guizhou , China
| | - Chao Chen
- Department of Immunology, Zunyi Medical College , Guizhou , China
| | - Mengmeng Guo
- Department of Immunology, Zunyi Medical College , Guizhou , China
| | - Yijin Tao
- Department of Immunology, Zunyi Medical College , Guizhou , China
| | - PanPan Cui
- Department of Immunology, Zunyi Medical College , Guizhou , China
| | - Ya Zhou
- Department of Medical Physics, Zunyi Medical College , Guizhou , China
| | - Nalin Qin
- Department of Immunology, Zunyi Medical College , Guizhou , China
| | - Jing Zheng
- Department of Immunology, Zunyi Medical College , Guizhou , China
| | - Jidong Zhang
- Department of Immunology, Zunyi Medical College , Guizhou , China
| | - Lin Xu
- Department of Immunology, Zunyi Medical College , Guizhou , China
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31
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CXCL13 inhibits microRNA-23a through PI3K/AKT signaling pathway in adipose tissue derived-mesenchymal stem cells. Biomed Pharmacother 2016; 83:876-880. [DOI: 10.1016/j.biopha.2016.07.059] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Revised: 07/29/2016] [Accepted: 07/31/2016] [Indexed: 01/08/2023] Open
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32
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MiR-30a inhibits Th17 differentiation and demyelination of EAE mice by targeting the IL-21R. Brain Behav Immun 2016; 57:193-199. [PMID: 27006279 DOI: 10.1016/j.bbi.2016.03.016] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Revised: 03/08/2016] [Accepted: 03/19/2016] [Indexed: 12/29/2022] Open
Abstract
T helper cells 17 (Th17) are recognized as key participants in the pathogenesis of chronic autoimmune diseases such as multiple sclerosis (MS). Regulation of Th17 differentiation is a valuable strategy for diagnosis and treatment of these complicated immune disorders. Here, by genome-wide expression profiling of microRNAs (miRs), we screened miR-30a, whose level was greatly decreased during Th17 differentiation and the process of demyelination disease, both in MS patients and experimental autoimmune encephalomyelitis (EAE) mice. Enforced constitutive expression of miR-30a in naïve T cells inhibited their differentiation into Th17, and in vivo overexpression of miR-30a resulted in fewer Th17 and alleviative EAE. Moreover, target prediction analysis and dual luciferase report assay revealed that interleukin-21 receptor (IL-21R) was a direct target of miR-30a, a finding consistent with the results that miR-30a downregulated the expression of IL-21R, while overexpression of IL-21R alleviated the inhibitory effect of miR-30a on Th17 differentiation. Taken together, our findings imply that miR-30a inhibits Th17 differentiation and the pathogenesis of MS by targeting IL-21R.
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33
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Dengue Virus-Induced Inflammation of the Endothelium and the Potential Roles of Sphingosine Kinase-1 and MicroRNAs. Mediators Inflamm 2015; 2015:509306. [PMID: 26609198 PMCID: PMC4644833 DOI: 10.1155/2015/509306] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Revised: 10/02/2015] [Accepted: 10/08/2015] [Indexed: 01/24/2023] Open
Abstract
One of the main pathogenic effects of severe dengue virus (DENV) infection is a vascular leak syndrome. There are no available antivirals or specific DENV treatments and without hospital support severe DENV infection can be life-threatening. The cause of the vascular leakage is permeability changes in the endothelial cells lining the vasculature that are brought about by elevated vasoactive cytokine and chemokines induced following DENV infection. The source of these altered cytokine and chemokines is traditionally believed to be from DENV-infected cells such as monocyte/macrophages and dendritic cells. Herein we discuss the evidence for the endothelium as an additional contributor to inflammatory and innate responses during DENV infection which may affect endothelial cell function, in particular the ability to maintain vascular integrity. Furthermore, we hypothesise roles for two factors, sphingosine kinase-1 and microRNAs (miRNAs), with a focus on several candidate miRNAs, which are known to control normal vascular function and inflammatory responses. Both of these factors may be potential therapeutic targets to regulate inflammation of the endothelium during DENV infection.
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34
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Santulli G. microRNAs Distinctively Regulate Vascular Smooth Muscle and Endothelial Cells: Functional Implications in Angiogenesis, Atherosclerosis, and In-Stent Restenosis. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2015; 887:53-77. [PMID: 26662986 PMCID: PMC4871245 DOI: 10.1007/978-3-319-22380-3_4] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Endothelial cells (EC) and vascular smooth muscle cells (VSMC) are the main cell types within the vasculature. We describe here how microRNAs (miRs)--noncoding RNAs that can regulate gene expression via translational repression and/or post-transcriptional degradation--distinctively modulate EC and VSMC function in physiology and disease. In particular, the specific roles of miR-126 and miR-143/145, master regulators of EC and VSMC function, respectively, are deeply explored. We also describe the mechanistic role of miRs in the regulation of the pathophysiology of key cardiovascular processes including angiogenesis, atherosclerosis, and in-stent restenosis post-angioplasty. Drawbacks of currently available therapeutic options are discussed, pointing at the challenges and potential clinical opportunities provided by miR-based treatments.
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MESH Headings
- Angioplasty
- Animals
- Atherosclerosis/genetics
- Atherosclerosis/metabolism
- Endothelial Cells/cytology
- Endothelial Cells/metabolism
- Gene Expression Regulation
- Graft Occlusion, Vascular/genetics
- Graft Occlusion, Vascular/metabolism
- Humans
- MicroRNAs/genetics
- MicroRNAs/metabolism
- Muscle, Smooth, Vascular/cytology
- Muscle, Smooth, Vascular/physiology
- Myocytes, Smooth Muscle/cytology
- Myocytes, Smooth Muscle/metabolism
- Neovascularization, Pathologic/genetics
- Neovascularization, Pathologic/metabolism
- Neovascularization, Physiologic
- RNA, Untranslated/genetics
- RNA, Untranslated/metabolism
- Stents/adverse effects
- Vascular Remodeling
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