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Virus-derived small RNAs in the penaeid shrimp Fenneropenaeus chinensis during acute infection of the DNA virus WSSV. 2016

Chengzhang Liu, and Fuhua Li, and Yumiao Sun, and Xiaojun Zhang, and Jianbo Yuan, and Hui Yang, and Jianhai Xiang
Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China.

Small interfering RNAs (siRNAs) and microRNAs (miRNAs) are two classes of small RNAs (sRNAs) that are critical for virus-host interplay via the RNA interference (RNAi) pathway. One virus-derived siRNA and numerous miRNAs has been reported for the double-stranded DNA virus white spot syndrome virus (WSSV), however, the expression profiles of these different types of sRNAs have not been assessed. Here, by sequencing the sRNAs and mRNAs of WSSV-infected Chinese shrimp (Fenneropenaeus chinensis), we found that the viral transcripts were universally targeted by WSSV-derived siRNAs, supporting a pivotal role for RNAi in the anti-viral immunity of shrimp. The genesis of WSSV-derived siRNAs was associated with long RNA structures. Moreover, by separating miRNAs from siRNAs, 12 WSSV miRNAs were identified. Investigation of conserved viral miRNA targets in different host species indicated the involvement of viral miRNAs in host immune responses. Collectively, our data provide new insights into the role of the RNAi pathway in the interplay between DNA viruses and crustaceans.

UI MeSH Term Description Entries
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D012367 RNA, Viral Ribonucleic acid that makes up the genetic material of viruses. Viral RNA
D014158 Transcription, Genetic The biosynthesis of RNA carried out on a template of DNA. The biosynthesis of DNA from an RNA template is called REVERSE TRANSCRIPTION. Genetic Transcription
D046848 White spot syndrome virus 1 A species of DNA virus, in the genus WHISPOVIRUS, infecting PENAEID SHRIMP. White Spot Syndrome Virus
D033561 Penaeidae A family of CRUSTACEA, order DECAPODA, comprising the penaeid shrimp. Species of the genus Penaeus are the most important commercial shrimp throughout the world. Metapenaeus,Penaeus,Shrimp, Penaeid,Penaeid Shrimp,Penaeid Shrimps,Shrimps, Penaeid
D034741 RNA, Small Interfering Small double-stranded, non-protein coding RNAs (21-31 nucleotides) involved in GENE SILENCING functions, especially RNA INTERFERENCE (RNAi). Endogenously, siRNAs are generated from dsRNAs (RNA, DOUBLE-STRANDED) by the same ribonuclease, Dicer, that generates miRNAs (MICRORNAS). The perfect match of the siRNAs' antisense strand to their target RNAs mediates RNAi by siRNA-guided RNA cleavage. siRNAs fall into different classes including trans-acting siRNA (tasiRNA), repeat-associated RNA (rasiRNA), small-scan RNA (scnRNA), and Piwi protein-interacting RNA (piRNA) and have different specific gene silencing functions. RNA, Scan,Repeat-Associated siRNA,Scan RNA,Small Scan RNA,Trans-Acting siRNA,siRNA,siRNA, Repeat-Associated,siRNA, Trans-Acting,Short Hairpin RNA,Short Interfering RNA,Small Hairpin RNA,Small Interfering RNA,scnRNA,shRNA,tasiRNA,Hairpin RNA, Short,Hairpin RNA, Small,Interfering RNA, Short,Interfering RNA, Small,RNA, Short Hairpin,RNA, Short Interfering,RNA, Small Hairpin,RNA, Small Scan,Repeat Associated siRNA,Scan RNA, Small,Trans Acting siRNA,siRNA, Repeat Associated,siRNA, Trans Acting

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