microRNAs of parasitic helminths - Identification, characterization and potential as drug targets.
microRNAs of parasitic helminths - Identification, characterization and potential as drug targets.
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DOI:
10.1016/j.ijpddr.2014.03.001
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发表时间:
2014-08
影响因子:
4
通讯作者:
Devaney, Eileen
中科院分区:
文献类型:
--
作者:
Britton, Collette;Winter, Alan D.;Gillan, Victoria;Devaney, Eileen
Importance of microRNAs in helminth post-transcriptional gene regulation is reviewed. Increasing helminth miRNA data are available from deep sequencing. Some miRNAs are helminth-specific, many are novel to each species. miRNAs may regulate parasite and host gene expression. Uptake of miRNA inhibitors and mimics is feasible for functional analysis. microRNAs (miRNAs) are small non-coding RNAs involved in post-transcriptional gene regulation. They were first identified in the free-living nematode Caenorhabditis elegans, where the miRNAs lin-4 and let-7 were shown to be essential for regulating correct developmental progression. The sequence of let-7 was subsequently found to be conserved in higher organisms and changes in expression of let-7, as well as other miRNAs, are associated with certain cancers, indicating important regulatory roles. Some miRNAs have been shown to have essential functions, but the roles of many are currently unknown. With the increasing availability of genome sequence data, miRNAs have now been identified from a number of parasitic helminths, by deep sequencing of small RNA libraries and bioinformatic approaches. While some miRNAs are widely conserved in a range of organisms, others are helminth-specific and many are novel to each species. Here we review the potential roles of miRNAs in regulating helminth development, in interacting with the host environment and in development of drug resistance. Use of fluorescently-labeled small RNAs demonstrates uptake by parasites, at least in vitro. Therefore delivery of miRNA inhibitors or mimics has potential to alter miRNA activity, providing a useful tool for probing the roles of miRNAs and suggesting novel routes to therapeutics for parasite control.
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