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Dzakah EE, Waqas A, Wei S, Yu B, Wang X, Fu T, Liu L, Shan G. Loss of miR-83 extends lifespan and affects target gene expression in an age-dependent manner in Caenorhabditis elegans. J Genet Genomics 2018; 45:651-662. [PMID: 30595472 DOI: 10.1016/j.jgg.2018.11.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Revised: 10/11/2018] [Accepted: 11/06/2018] [Indexed: 02/06/2023]
Abstract
MicroRNAs (miRNAs) are short non-coding RNAs that are involved in the post-transcriptional regulation of protein-coding genes. miRNAs modulate lifespan and the aging process in a variety of organisms. In this study, we identified a role of miR-83 in regulating lifespan of Caenorhabditis elegans. mir-83 mutants exhibited extended lifespan, and the overexpression of miR-83 was sufficient to decrease the prolonged lifespan of the mutants. We observed upregulation of the expression levels of a set of miR-83 target genes in young mir-83 mutant adults; while different sets of genes were upregulated in older mir-83 mutant adults. In vivo assays showed that miR-83 regulated expression of target genes including din-1, spp-9 and col-178, and we demonstrated that daf-16 and din-1 were required for the extension of lifespan in the mir-83 mutants. The regulation of din-1 by miR-83 during aging resulted in the differential expression of din-1 targets such as gst-4 and gst-10. In daf-2 mutants, the expression level of miR-83 was significantly reduced compared to wild-type animals. We identified a role for miR-83 in modulating lifespan in C. elegans and provided molecular insights into its functional mechanism.
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Affiliation(s)
- Emmanuel Enoch Dzakah
- Division of Molecular Medicine, Hefei National Laboratory for Physical Sciences at Microscale, the CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Life Sciences, University of Science and Technology of China, Hefei 230027, China; Department of Molecular Biology and Biotechnology, School of Biological Sciences, College of Agriculture and Natural Sciences, University of Cape Coast, Cape Coast 03321, Ghana
| | - Ahmed Waqas
- Division of Molecular Medicine, Hefei National Laboratory for Physical Sciences at Microscale, the CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Life Sciences, University of Science and Technology of China, Hefei 230027, China
| | - Shuai Wei
- Division of Molecular Medicine, Hefei National Laboratory for Physical Sciences at Microscale, the CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Life Sciences, University of Science and Technology of China, Hefei 230027, China
| | - Bin Yu
- Division of Molecular Medicine, Hefei National Laboratory for Physical Sciences at Microscale, the CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Life Sciences, University of Science and Technology of China, Hefei 230027, China
| | - Xiaolin Wang
- Division of Molecular Medicine, Hefei National Laboratory for Physical Sciences at Microscale, the CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Life Sciences, University of Science and Technology of China, Hefei 230027, China
| | - Tao Fu
- Division of Molecular Medicine, Hefei National Laboratory for Physical Sciences at Microscale, the CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Life Sciences, University of Science and Technology of China, Hefei 230027, China
| | - Lei Liu
- Division of Molecular Medicine, Hefei National Laboratory for Physical Sciences at Microscale, the CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Life Sciences, University of Science and Technology of China, Hefei 230027, China
| | - Ge Shan
- Division of Molecular Medicine, Hefei National Laboratory for Physical Sciences at Microscale, the CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Life Sciences, University of Science and Technology of China, Hefei 230027, China; CAS Centre for Excellence in Molecular Cell Science, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China.
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2
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Awan HM, Shah A, Rashid F, Wei S, Chen L, Shan G. Comparing two approaches of miR-34a target identification, biotinylated-miRNA pulldown vs miRNA overexpression. RNA Biol 2018; 15:55-61. [PMID: 29028450 PMCID: PMC5786020 DOI: 10.1080/15476286.2017.1391441] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Revised: 10/06/2017] [Accepted: 10/08/2017] [Indexed: 10/18/2022] Open
Abstract
microRNAs (miRNAs) are critical regulators of gene expression. For elucidating functional roles of miRNAs, it is critical to identify their direct targets. There are debates about whether pulldown of biotinylated miRNA mimics can be used to identify miRNA targets or not. Here we show that biotin-labelled miR-34a can be loaded to AGO2, and AGO2 immunoprecipitation can pulldown biotinylated miR-34a (Bio-miR pulldown). RNA-sequencing (RNA-seq) of the Bio-miR pulldown RNAs efficiently identified miR-34a mRNA targets, which could be verified with luciferase assays. In contrast to the approach of Bio-miR pulldown, RNA-seq of miR-34a overexpression samples had limited value in identifying direct targets of miR-34a. It seems that pulldown of 3'-Biotin-tagged miRNA can identify bona fide microRNA targets at least for miR-34a.
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Affiliation(s)
- Hassaan Mehboob Awan
- CAS Key Laboratory of Innate Immunity and Chronic Disease, CAS Center for Excellence in Molecular Cell Science, School of Life Sciences, University of Science and Technology of China, Hefei, China
| | - Abdullah Shah
- CAS Key Laboratory of Innate Immunity and Chronic Disease, CAS Center for Excellence in Molecular Cell Science, School of Life Sciences, University of Science and Technology of China, Hefei, China
| | - Farooq Rashid
- CAS Key Laboratory of Innate Immunity and Chronic Disease, CAS Center for Excellence in Molecular Cell Science, School of Life Sciences, University of Science and Technology of China, Hefei, China
| | - Shuai Wei
- CAS Key Laboratory of Innate Immunity and Chronic Disease, CAS Center for Excellence in Molecular Cell Science, School of Life Sciences, University of Science and Technology of China, Hefei, China
| | - Liang Chen
- CAS Key Laboratory of Innate Immunity and Chronic Disease, CAS Center for Excellence in Molecular Cell Science, School of Life Sciences, University of Science and Technology of China, Hefei, China
| | - Ge Shan
- CAS Key Laboratory of Innate Immunity and Chronic Disease, CAS Center for Excellence in Molecular Cell Science, School of Life Sciences, University of Science and Technology of China, Hefei, China
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3
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Dumache R, Rogobete AF, Sandesc D, Bedreag OH, Ciocan V, Muresan C, Stan AT, Sandesc M, Dinu A, Popovici SE, Enache A. Use of Circulating and Cellular miRNAs Expression in Forensic Sciences. JOURNAL OF INTERDISCIPLINARY MEDICINE 2017. [DOI: 10.1515/jim-2017-0074] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
The current practice in the field of forensic medicine imposes the use of modern investigation techniques. The complexity of laboratory investigation methods needed for a final result of the investigation in forensic medicine needed new biomarkers of higher specificity and selectivity. Such biomarkers are the microRNAs (miRNAs), short, non-coding RNAs composed of 19–24 nucleotides. Their characteristics, such as high stability, selectivity, and specificity for biological fluids, differ from tissue to tissue and for certain pathologies, turning them into the ideal candidate for laboratory techniques used in forensic medicine. In this paper, we wish to highlight the biochemical properties and the usefulness of miRNAs in forensic medicine.
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Affiliation(s)
- Raluca Dumache
- Department of Forensic Medicine , “Victor Babeș” University of Medicine and Pharmacy , Timișoara , Romania
| | - Alexandru Florin Rogobete
- Faculty of Medicine , “Victor Babeș” University of Medicine and Pharmacy , Timișoara , Romania
- Clinic of Anesthesia and Intensive Care , “Pius Brinzeu” Emergency County Hospital , Timișoara , Romania
| | - Dorel Sandesc
- Faculty of Medicine , “Victor Babeș” University of Medicine and Pharmacy , Timișoara , Romania
- Clinic of Anesthesia and Intensive Care , “Pius Brinzeu” Emergency County Hospital , Timișoara , Romania
| | - Ovidiu Horea Bedreag
- Faculty of Medicine , “Victor Babeș” University of Medicine and Pharmacy , Timișoara , Romania
- Clinic of Anesthesia and Intensive Care , “Pius Brinzeu” Emergency County Hospital , Timișoara , Romania
| | - Veronica Ciocan
- Department of Forensic Medicine , “Victor Babeș” University of Medicine and Pharmacy , Timișoara , Romania
| | - Camelia Muresan
- Department of Forensic Medicine , “Victor Babeș” University of Medicine and Pharmacy , Timișoara , Romania
| | - Adrian Tudor Stan
- Department of Forensic Medicine , “Victor Babeș” University of Medicine and Pharmacy , Timișoara , Romania
| | - Mihai Sandesc
- Department of Forensic Medicine , “Victor Babeș” University of Medicine and Pharmacy , Timișoara , Romania
| | - Anca Dinu
- Department of Forensic Medicine , “Victor Babeș” University of Medicine and Pharmacy , Timișoara , Romania
| | - Sonia Elena Popovici
- Department of Forensic Medicine , “Victor Babeș” University of Medicine and Pharmacy , Timișoara , Romania
| | - Alexandra Enache
- Department of Forensic Medicine , “Victor Babeș” University of Medicine and Pharmacy , Timișoara , Romania
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Primate-specific Long Non-coding RNAs and MicroRNAs. GENOMICS PROTEOMICS & BIOINFORMATICS 2017; 15:187-195. [PMID: 28602844 PMCID: PMC5487532 DOI: 10.1016/j.gpb.2017.04.002] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Revised: 03/25/2017] [Accepted: 04/05/2017] [Indexed: 12/21/2022]
Abstract
Non-coding RNAs (ncRNAs) are critical regulators of gene expression in essentially all life forms. Long ncRNAs (lncRNAs) and microRNAs (miRNAs) are two important RNA classes possessing regulatory functions. Up to date, many primate-specific ncRNAs have been identified and investigated. Their expression specificity to primate lineage suggests primate-specific roles. It is thus critical to elucidate the biological significance of primate or even human-specific ncRNAs, and to develop potential ncRNA-based therapeutics. Here, we have summarized the studies regarding regulatory roles of some key primate-specific lncRNAs and miRNAs.
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Borbolis F, Flessa CM, Roumelioti F, Diallinas G, Stravopodis DJ, Syntichaki P. Neuronal function of the mRNA decapping complex determines survival of Caenorhabditis elegans at high temperature through temporal regulation of heterochronic gene expression. Open Biol 2017; 7:160313. [PMID: 28250105 PMCID: PMC5376704 DOI: 10.1098/rsob.160313] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Accepted: 02/04/2017] [Indexed: 12/18/2022] Open
Abstract
In response to adverse environmental cues, Caenorhabditis elegans larvae can temporarily arrest development at the second moult and form dauers, a diapause stage that allows for long-term survival. This process is largely regulated by certain evolutionarily conserved signal transduction pathways, but it is also affected by miRNA-mediated post-transcriptional control of gene expression. The 5'-3' mRNA decay mechanism contributes to miRNA-mediated silencing of target mRNAs in many organisms but how it affects developmental decisions during normal or stress conditions is largely unknown. Here, we show that loss of the mRNA decapping complex activity acting in the 5'-3' mRNA decay pathway inhibits dauer formation at the stressful high temperature of 27.5°C, and instead promotes early developmental arrest. Our genetic data suggest that this arrest phenotype correlates with dysregulation of heterochronic gene expression and an aberrant stabilization of lin-14 mRNA at early larval stages. Restoration of neuronal dcap-1 activity was sufficient to rescue growth phenotypes of dcap-1 mutants at both high and normal temperatures, implying the involvement of common developmental timing mechanisms. Our work unveils the crucial role of 5'-3' mRNA degradation in proper regulation of heterochronic gene expression programmes, which proved to be essential for survival under stressful conditions.
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Affiliation(s)
- Fivos Borbolis
- Biomedical Research Foundation of the Academy of Athens, Center of Basic Research, Athens 11527, Greece
- Faculty of Biology, School of Science, University of Athens, Athens, Greece
| | - Christina-Maria Flessa
- Biomedical Research Foundation of the Academy of Athens, Center of Basic Research, Athens 11527, Greece
- Faculty of Biology, School of Science, University of Athens, Athens, Greece
| | - Fani Roumelioti
- Biomedical Research Foundation of the Academy of Athens, Center of Basic Research, Athens 11527, Greece
- School of Medicine, University of Athens, Athens, Greece
| | - George Diallinas
- Faculty of Biology, School of Science, University of Athens, Athens, Greece
| | | | - Popi Syntichaki
- Biomedical Research Foundation of the Academy of Athens, Center of Basic Research, Athens 11527, Greece
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Bedreag OH, Rogobete AF, Dumache R, Sarandan M, Cradigati AC, Papurica M, Craciunescu MC, Popa DM, Luca L, Nartita R, Sandesc D. Use of circulating microRNAs as biomarkers in critically ill polytrauma patients. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.bgm.2015.11.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Dumache R, Rogobete AF, Bedreag OH, Sarandan M, Cradigati AC, Papurica M, Dumbuleu CM, Nartita R, Sandesc D. Use of miRNAs as biomarkers in sepsis. Anal Cell Pathol (Amst) 2015; 2015:186716. [PMID: 26221578 PMCID: PMC4499375 DOI: 10.1155/2015/186716] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Revised: 06/15/2015] [Accepted: 06/21/2015] [Indexed: 12/19/2022] Open
Abstract
Sepsis is one of the most common causes of death in critical patients. Severe generalized inflammation, infections, and severe physiological imbalances significantly decrease the survival rate with more than 50%. Moreover, monitoring, evaluation, and therapy management often become extremely difficult for the clinician in this type of patients. Current methods of diagnosing sepsis vary based especially on the determination of biochemical-humoral markers, such as cytokines, components of the complement, and proinflammatory and anti-inflammatory compounds. Recent studies highlight the use of new biomarkers for sepsis, namely, miRNAs. miRNAs belong to a class of small, noncoding RNAs with an approximate content of 19-23 nucleotides. Following biochemical and physiological imbalances, the expression of miRNAs in blood or other body fluids changes significantly. Moreover, its stability, specificity, and selectivity make miRNAs ideal candidates for sepsis biomarkers. In conclusion, we can affirm that stable species of circulating miRNAs represent potential biomarkers for monitoring the evolution of sepsis.
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Affiliation(s)
- Raluca Dumache
- Department of Forensic Medicine, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - Alexandru Florin Rogobete
- Clinic of Anaesthesia and Intensive Care, Emergency County Hospital “Pius Brinzeu”, 300736 Timisoara, Romania
- Faculty of Medicine, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania
- Faculty of Chemistry, Biology, and Geography, West University of Timisoara, 300115 Timisoara, Romania
| | - Ovidiu Horea Bedreag
- Clinic of Anaesthesia and Intensive Care, Emergency County Hospital “Pius Brinzeu”, 300736 Timisoara, Romania
- Faculty of Medicine, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - Mirela Sarandan
- Clinic of Anaesthesia and Intensive Care “Casa Austria”, Emergency County Hospital “Pius Brinzeu”, 300736 Timisoara, Romania
| | - Alina Carmen Cradigati
- Clinic of Anaesthesia and Intensive Care “Casa Austria”, Emergency County Hospital “Pius Brinzeu”, 300736 Timisoara, Romania
| | - Marius Papurica
- Clinic of Anaesthesia and Intensive Care, Emergency County Hospital “Pius Brinzeu”, 300736 Timisoara, Romania
- Faculty of Medicine, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - Corina Maria Dumbuleu
- Clinic of Anaesthesia and Intensive Care, Emergency County Hospital “Pius Brinzeu”, 300736 Timisoara, Romania
| | - Radu Nartita
- Faculty of Chemistry, Biology, and Geography, West University of Timisoara, 300115 Timisoara, Romania
| | - Dorel Sandesc
- Clinic of Anaesthesia and Intensive Care, Emergency County Hospital “Pius Brinzeu”, 300736 Timisoara, Romania
- Faculty of Medicine, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania
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Dai L, Huang C, Chen L, Shan G, Li Z. Altered expression of microRNAs in the response to ER stress. Sci Bull (Beijing) 2015. [DOI: 10.1007/s11434-014-0657-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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9
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Saul N, Chakrabarti S, Stürzenbaum SR, Menzel R, Steinberg CEW. Neurotoxic action of microcystin-LR is reflected in the transcriptional stress response of Caenorhabditis elegans. Chem Biol Interact 2014; 223:51-7. [PMID: 25257166 DOI: 10.1016/j.cbi.2014.09.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2014] [Revised: 08/27/2014] [Accepted: 09/10/2014] [Indexed: 10/24/2022]
Abstract
Cyanobacterial blooms in aquatic environments are frequently characterized by elevated levels of microcystins, a potent hepatotoxin. Here we exposed the nematode Caenorhabditis elegans with environmentally realistic concentrations of MC-LR to explore its non-hepatic toxicity. Lifespan, reproduction and growth assays confirmed the toxic potential of 100μg/L MC-LR even in this liver-lacking invertebrate. Whole-genome microarray analysis revealed that a neuromodulating action was the dominant response in nematodes challenged with 100μg/L MC-LR. Indeed, most of the 201 differentially expressed genes were associated with neurobehavior, neurogenesis, and signaling associated pathways. In addition, a whole-genome miRNA-microarray highlighted that, in particular, members of the let-7 family were differentially regulated. These miRNAs are involved in the developmental timing of cell fates, including neurons, and are probably also part of the stress response system. To conclude, neurological modulation is the main transcriptional stress response in C. elegans exposed to MC-LR.
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Affiliation(s)
- Nadine Saul
- Department of Biology, Freshwater and Stress Ecology, Humboldt-Universität zu Berlin, Späthstr. 80/81, 12437 Berlin, Germany.
| | - Shumon Chakrabarti
- Department of Biology, Freshwater and Stress Ecology, Humboldt-Universität zu Berlin, Späthstr. 80/81, 12437 Berlin, Germany
| | - Stephen R Stürzenbaum
- School of Biomedical Sciences, Analytical and Environmental Sciences Division, King's College London, 150 Stamford Street, London SE1 9NH, UK
| | - Ralph Menzel
- Department of Biology, Freshwater and Stress Ecology, Humboldt-Universität zu Berlin, Späthstr. 80/81, 12437 Berlin, Germany
| | - Christian E W Steinberg
- Department of Biology, Freshwater and Stress Ecology, Humboldt-Universität zu Berlin, Späthstr. 80/81, 12437 Berlin, Germany
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