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dc.contributor.author Skalsky, RL
dc.contributor.author Vanlandingham, DL
dc.contributor.author Scholle, F
dc.contributor.author Higgs, S
dc.contributor.author Cullen, BR
dc.coverage.spatial England
dc.date.accessioned 2011-06-21T17:29:33Z
dc.date.issued 2010-02-18
dc.identifier http://www.ncbi.nlm.nih.gov/pubmed/20167119
dc.identifier 1471-2164-11-119
dc.identifier.citation BMC Genomics, 2010, 11 pp. 119 - ?
dc.identifier.uri http://hdl.handle.net/10161/4344
dc.description.abstract BACKGROUND: MicroRNAs (miRNAs) are small non-coding RNAs that post-transcriptionally regulate gene expression in a variety of organisms, including insects, vertebrates, and plants. miRNAs play important roles in cell development and differentiation as well as in the cellular response to stress and infection. To date, there are limited reports of miRNA identification in mosquitoes, insects that act as essential vectors for the transmission of many human pathogens, including flaviviruses. West Nile virus (WNV) and dengue virus, members of the Flaviviridae family, are primarily transmitted by Aedes and Culex mosquitoes. Using high-throughput deep sequencing, we examined the miRNA repertoire in Ae. albopictus cells and Cx. quinquefasciatus mosquitoes. RESULTS: We identified a total of 65 miRNAs in the Ae. albopictus C7/10 cell line and 77 miRNAs in Cx. quinquefasciatus mosquitoes, the majority of which are conserved in other insects such as Drosophila melanogaster and Anopheles gambiae. The most highly expressed miRNA in both mosquito species was miR-184, a miRNA conserved from insects to vertebrates. Several previously reported Anopheles miRNAs, including miR-1890 and miR-1891, were also found in Culex and Aedes, and appear to be restricted to mosquitoes. We identified seven novel miRNAs, arising from nine different precursors, in C7/10 cells and Cx. quinquefasciatus mosquitoes, two of which have predicted orthologs in An. gambiae. Several of these novel miRNAs reside within a ~350 nt long cluster present in both Aedes and Culex. miRNA expression was confirmed by primer extension analysis. To determine whether flavivirus infection affects miRNA expression, we infected female Culex mosquitoes with WNV. Two miRNAs, miR-92 and miR-989, showed significant changes in expression levels following WNV infection. CONCLUSIONS: Aedes and Culex mosquitoes are important flavivirus vectors. Recent advances in both mosquito genomics and high-throughput sequencing technologies enabled us to interrogate the miRNA profile in these two species. Here, we provide evidence for over 60 conserved and seven novel mosquito miRNAs, expanding upon our current understanding of insect miRNAs. Undoubtedly, some of the miRNAs identified will have roles not only in mosquito development, but also in mediating viral infection in the mosquito host.
dc.format.extent 119 - ?
dc.language ENG
dc.language.iso en_US en_US
dc.relation.ispartof BMC Genomics
dc.relation.isversionof 10.1186/1471-2164-11-119
dc.subject Aedes
dc.subject Animals
dc.subject Cell Line
dc.subject Computational Biology
dc.subject Culex
dc.subject Female
dc.subject Insect Vectors
dc.subject MicroRNAs
dc.subject Sequence Analysis, RNA
dc.subject West Nile virus
dc.title Identification of microRNAs expressed in two mosquito vectors, Aedes albopictus and Culex quinquefasciatus.
dc.title.alternative en_US
dc.type Journal Article
dc.description.version Version of Record en_US
duke.date.pubdate 2010-2-18 en_US
duke.description.endpage 119 en_US
duke.description.issue en_US
duke.description.startpage 119 en_US
duke.description.volume 11 en_US
dc.relation.journal Bmc Genomics en_US
pubs.author-url http://www.ncbi.nlm.nih.gov/pubmed/20167119
pubs.organisational-group /Duke
pubs.organisational-group /Duke/School of Medicine
pubs.organisational-group /Duke/School of Medicine/Basic Science Departments
pubs.organisational-group /Duke/School of Medicine/Basic Science Departments/Molecular Genetics and Microbiology
pubs.organisational-group /Duke/School of Medicine/Clinical Science Departments
pubs.organisational-group /Duke/School of Medicine/Clinical Science Departments/Medicine
pubs.organisational-group /Duke/School of Medicine/Clinical Science Departments/Medicine/Medicine, Rheumatology and Immunology
pubs.organisational-group /Duke/School of Medicine/Institutes and Centers
pubs.organisational-group /Duke/School of Medicine/Institutes and Centers/Duke Cancer Institute
pubs.publication-status Published online
pubs.volume 11
dc.identifier.eissn 1471-2164

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