期刊
MOLECULAR AND BIOCHEMICAL PARASITOLOGY
卷 210, 期 1-2, 页码 37-49出版社
ELSEVIER
DOI: 10.1016/j.molbiopara.2016.08.004
关键词
miRNAs; Strobilation; Cestoda; sRNA-seq; Differential expression; Platyhelminthes
资金
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES, Brazil) [1278/2011, 230/013, 070/13]
MicroRNAs (miRNAs), a class of small non-coding RNAs, are key regulators of gene expression at post transcriptional level and play essential roles in fundamental biological processes such as metabolism and development. The particular developmental characteristics of cestode parasites highlight the importance of studying miRNA gene regulation in these organisms. Here, we performed a comprehensive analysis of miRNAs in two developmental stages of the model cestode Mesocestoides corti. Using a high-throughput sequencing approach, we found transcriptional evidence of 42 miRNA loci in tetrathyridia larvae and strobilated worms. Tetrathyridium and strobilated worm-specific miRNAs were found, as well as differentialy expressed miRNAs between these developmental stages, suggesting miRNA regulation of stage-specific features. Moreover, it was shown that uridylation is a differential mechanism of post-transcriptional modification of M. corti miRNAs. The whole set of M. cord miRNAs represent 33 unique miRNA families, and confirm the remarkable loss of conserved miRNA families within platyhelminth parasites, reflecting their relatively low morphological complexity and high adaptation to parasitism. Overall, the presented results provide a valuable platform to studies aiming to identify and characterize novel miRNA-based molecular mechanisms of post-transcriptional gene regulation in cestodes, necessary for the elucidation of developmental aspects of the complex biology of these parasites. (C) 2016 Elsevier B.V. All rights reserved.
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