Characterization of Epstein-Barr virus miRNAome in nasopharyngeal carcinoma by deep sequencing.
Virus-encoded microRNAs (miRNAs) have been shown to regulate a variety of biological processes involved in viral infection and viral-associated pathogenesis. Epstein-Barr virus (EBV) is a herpesvirus implicated in nasopharyngeal carcinoma (NPC) and other human malignancies. EBV-encoded miRNAs were a...
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2010-09-01
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| Series: | PLoS ONE |
| Online Access: | https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/20862214/?tool=EBI |
| _version_ | 1818554643810091008 |
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| author | Shu-Jen Chen Gian-Hung Chen Yi-Hsuan Chen Cheng-Yuan Liu Kai-Ping Chang Yu-Sun Chang Hua-Chien Chen |
| author_facet | Shu-Jen Chen Gian-Hung Chen Yi-Hsuan Chen Cheng-Yuan Liu Kai-Ping Chang Yu-Sun Chang Hua-Chien Chen |
| author_sort | Shu-Jen Chen |
| collection | DOAJ |
| description | Virus-encoded microRNAs (miRNAs) have been shown to regulate a variety of biological processes involved in viral infection and viral-associated pathogenesis. Epstein-Barr virus (EBV) is a herpesvirus implicated in nasopharyngeal carcinoma (NPC) and other human malignancies. EBV-encoded miRNAs were among the first group of viral miRNAs identified. To understand the roles of EBV miRNAs in the pathogenesis of NPC, we utilized deep sequencing technology to characterize the EBV miRNA transcriptome in clinical NPC tissues. We obtained more than 110,000 sequence reads in NPC samples and identified 44 EBV BART miRNAs, including four new mature miRNAs derived from previously identified BART miRNA precursor hairpins. Further analysis revealed extensive sequence variations (isomiRs) of EBV miRNAs, including terminal isomiRs at both the 5' and 3' ends and nucleotide variants. Analysis of EBV genomic sequences indicated that the majority of EBV miRNA nucleotide variants resulted from post-transcriptional modifications. Read counts of individual EBV miRNA in NPC tissue spanned from a few reads to approximately 18,000 reads, confirming the wide expression range of EBV miRNAs. Several EBV miRNAs were expressed at levels similar to highly abundant human miRNAs. Sequence analysis revealed that most of the highly abundant EBV miRNAs share their seed sequences (nucleotides 2-7) with human miRNAs, suggesting that seed sequence content may be an important factor underlying the differential accumulation of BART miRNAs. Interestingly, many of these human miRNAs have been found to be dysregulated in human malignancies, including NPC. These observations not only provide a potential linkage between EBV miRNAs and human malignancy but also suggest a highly coordinated mechanism through which EBV miRNAs may mimic or compete with human miRNAs to affect cellular functions. |
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| format | Article |
| id | doaj.art-8378acc250f3405bb005effa8ffa946f |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-12-12T09:42:41Z |
| publishDate | 2010-09-01 |
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| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-8378acc250f3405bb005effa8ffa946f2022-12-22T00:28:31ZengPublic Library of Science (PLoS)PLoS ONE1932-62032010-09-0159e1274510.1371/journal.pone.0012745Characterization of Epstein-Barr virus miRNAome in nasopharyngeal carcinoma by deep sequencing. Shu-Jen ChenGian-Hung ChenYi-Hsuan ChenCheng-Yuan LiuKai-Ping ChangYu-Sun ChangHua-Chien ChenVirus-encoded microRNAs (miRNAs) have been shown to regulate a variety of biological processes involved in viral infection and viral-associated pathogenesis. Epstein-Barr virus (EBV) is a herpesvirus implicated in nasopharyngeal carcinoma (NPC) and other human malignancies. EBV-encoded miRNAs were among the first group of viral miRNAs identified. To understand the roles of EBV miRNAs in the pathogenesis of NPC, we utilized deep sequencing technology to characterize the EBV miRNA transcriptome in clinical NPC tissues. We obtained more than 110,000 sequence reads in NPC samples and identified 44 EBV BART miRNAs, including four new mature miRNAs derived from previously identified BART miRNA precursor hairpins. Further analysis revealed extensive sequence variations (isomiRs) of EBV miRNAs, including terminal isomiRs at both the 5' and 3' ends and nucleotide variants. Analysis of EBV genomic sequences indicated that the majority of EBV miRNA nucleotide variants resulted from post-transcriptional modifications. Read counts of individual EBV miRNA in NPC tissue spanned from a few reads to approximately 18,000 reads, confirming the wide expression range of EBV miRNAs. Several EBV miRNAs were expressed at levels similar to highly abundant human miRNAs. Sequence analysis revealed that most of the highly abundant EBV miRNAs share their seed sequences (nucleotides 2-7) with human miRNAs, suggesting that seed sequence content may be an important factor underlying the differential accumulation of BART miRNAs. Interestingly, many of these human miRNAs have been found to be dysregulated in human malignancies, including NPC. These observations not only provide a potential linkage between EBV miRNAs and human malignancy but also suggest a highly coordinated mechanism through which EBV miRNAs may mimic or compete with human miRNAs to affect cellular functions.https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/20862214/?tool=EBI |
| spellingShingle | Shu-Jen Chen Gian-Hung Chen Yi-Hsuan Chen Cheng-Yuan Liu Kai-Ping Chang Yu-Sun Chang Hua-Chien Chen Characterization of Epstein-Barr virus miRNAome in nasopharyngeal carcinoma by deep sequencing. PLoS ONE |
| title | Characterization of Epstein-Barr virus miRNAome in nasopharyngeal carcinoma by deep sequencing. |
| title_full | Characterization of Epstein-Barr virus miRNAome in nasopharyngeal carcinoma by deep sequencing. |
| title_fullStr | Characterization of Epstein-Barr virus miRNAome in nasopharyngeal carcinoma by deep sequencing. |
| title_full_unstemmed | Characterization of Epstein-Barr virus miRNAome in nasopharyngeal carcinoma by deep sequencing. |
| title_short | Characterization of Epstein-Barr virus miRNAome in nasopharyngeal carcinoma by deep sequencing. |
| title_sort | characterization of epstein barr virus mirnaome in nasopharyngeal carcinoma by deep sequencing |
| url | https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/20862214/?tool=EBI |
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