[RNase III-prepared short interfering RNAs induce degradation of SARS-coronavirus mRNAs in human cells].
Identifieur interne : 002679 ( PubMed/Corpus ); précédent : 002678; suivant : 002680[RNase III-prepared short interfering RNAs induce degradation of SARS-coronavirus mRNAs in human cells].
Auteurs : Xu-Dong Zhu ; Ying Dang ; Yi Feng ; Tao Li ; Pei-Tang HuangSource :
- Sheng wu gong cheng xue bao = Chinese journal of biotechnology [ 1000-3061 ] ; 2004.
English descriptors
- KwdEn :
- MESH :
- chemical , genetics : RNA, Small Interfering.
- chemical , metabolism : RNA, Messenger, RNA, Viral.
- chemical , physiology : Ribonuclease III.
- genetics : SARS Virus.
- Cells, Cultured, Humans, Plasmids, RNA Interference.
Abstract
SARS-associated coronavirus has been identified for the cause of Severe Acute Respiratory Syndrome, for which there is no efficacious drugs or vaccines. RNA interference (RNAi) is a process in cell to degradation specific target mRNA by double-stranded RNA. In mammalian cells, RNAi can be triggered by short interfering RNA (siRNA). RNA interference of virus-specific genes has emerged as a potential antiviral mechanism. This work evaluated if RNase III-prepared short interfering RNAs can induce specific degradation of SARS-coronavirus mRNAs in human cells. Three of SARS genes, RNA dependent RNA polymerase (RdRp), spike and nucleocapsid, were amplified with T7 promoter-flanked primers. Long length double-stranded RNA of these genes were transcribed in vitro and then were cleaved to <30bp length short interfering RNA with E. coli RNase III. These siRNAs were termed esiRNA-R, esiRNA-S and esiRNA-N respectively. RdRp, spike and nucleocapsid DNA fragments were inserted into the plasmid pGL3-Control, obtained plasmids pGL-R, pGL-S and pGL-N can express hybrid mRNAs luciferase-RdRp, spike and -nucleocapsid in cells. Above plasmids and esiRNAs were co-transfected to HEK293F cells with reference plasmid pRL-TK. Firefly luciferase and Renilla luciferase activity were measured. Hybrid mRNAs' abundance was measured using reverse transcription real-time PCR. Firefly luciferase expression of pGL-R was reduced to 13% by esiRNA-R. Expression of pGLS was reduced to 11% by esiRNA-S. Expression of pGL-N was reduced to 40% by esiRNA-N. Control esiRNAs didn't affect luciferase expression; Hybrid mRNAs' abundance was dramatically reduced by corresponding esiRNAs. RNase III-prepared short interfering RNAs induce robust and specific degradation of SARS-coronavirus mRNAs in HEK293F cells. These siRNAs could be used to inhibit SARS-coronavirus in future research.
PubMed: 15968975
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pubmed:15968975Le document en format XML
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<author><name sortKey="Zhu, Xu Dong" sort="Zhu, Xu Dong" uniqKey="Zhu X" first="Xu-Dong" last="Zhu">Xu-Dong Zhu</name>
<affiliation><nlm:affiliation>Beijing Institute of Biotechnology, Beijing 100071, China. xd_zhu@263.net</nlm:affiliation>
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<author><name sortKey="Dang, Ying" sort="Dang, Ying" uniqKey="Dang Y" first="Ying" last="Dang">Ying Dang</name>
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<author><name sortKey="Feng, Yi" sort="Feng, Yi" uniqKey="Feng Y" first="Yi" last="Feng">Yi Feng</name>
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<author><name sortKey="Li, Tao" sort="Li, Tao" uniqKey="Li T" first="Tao" last="Li">Tao Li</name>
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<author><name sortKey="Huang, Pei Tang" sort="Huang, Pei Tang" uniqKey="Huang P" first="Pei-Tang" last="Huang">Pei-Tang Huang</name>
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<front><div type="abstract" xml:lang="en">SARS-associated coronavirus has been identified for the cause of Severe Acute Respiratory Syndrome, for which there is no efficacious drugs or vaccines. RNA interference (RNAi) is a process in cell to degradation specific target mRNA by double-stranded RNA. In mammalian cells, RNAi can be triggered by short interfering RNA (siRNA). RNA interference of virus-specific genes has emerged as a potential antiviral mechanism. This work evaluated if RNase III-prepared short interfering RNAs can induce specific degradation of SARS-coronavirus mRNAs in human cells. Three of SARS genes, RNA dependent RNA polymerase (RdRp), spike and nucleocapsid, were amplified with T7 promoter-flanked primers. Long length double-stranded RNA of these genes were transcribed in vitro and then were cleaved to <30bp length short interfering RNA with E. coli RNase III. These siRNAs were termed esiRNA-R, esiRNA-S and esiRNA-N respectively. RdRp, spike and nucleocapsid DNA fragments were inserted into the plasmid pGL3-Control, obtained plasmids pGL-R, pGL-S and pGL-N can express hybrid mRNAs luciferase-RdRp, spike and -nucleocapsid in cells. Above plasmids and esiRNAs were co-transfected to HEK293F cells with reference plasmid pRL-TK. Firefly luciferase and Renilla luciferase activity were measured. Hybrid mRNAs' abundance was measured using reverse transcription real-time PCR. Firefly luciferase expression of pGL-R was reduced to 13% by esiRNA-R. Expression of pGLS was reduced to 11% by esiRNA-S. Expression of pGL-N was reduced to 40% by esiRNA-N. Control esiRNAs didn't affect luciferase expression; Hybrid mRNAs' abundance was dramatically reduced by corresponding esiRNAs. RNase III-prepared short interfering RNAs induce robust and specific degradation of SARS-coronavirus mRNAs in HEK293F cells. These siRNAs could be used to inhibit SARS-coronavirus in future research.</div>
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<Abstract><AbstractText>SARS-associated coronavirus has been identified for the cause of Severe Acute Respiratory Syndrome, for which there is no efficacious drugs or vaccines. RNA interference (RNAi) is a process in cell to degradation specific target mRNA by double-stranded RNA. In mammalian cells, RNAi can be triggered by short interfering RNA (siRNA). RNA interference of virus-specific genes has emerged as a potential antiviral mechanism. This work evaluated if RNase III-prepared short interfering RNAs can induce specific degradation of SARS-coronavirus mRNAs in human cells. Three of SARS genes, RNA dependent RNA polymerase (RdRp), spike and nucleocapsid, were amplified with T7 promoter-flanked primers. Long length double-stranded RNA of these genes were transcribed in vitro and then were cleaved to <30bp length short interfering RNA with E. coli RNase III. These siRNAs were termed esiRNA-R, esiRNA-S and esiRNA-N respectively. RdRp, spike and nucleocapsid DNA fragments were inserted into the plasmid pGL3-Control, obtained plasmids pGL-R, pGL-S and pGL-N can express hybrid mRNAs luciferase-RdRp, spike and -nucleocapsid in cells. Above plasmids and esiRNAs were co-transfected to HEK293F cells with reference plasmid pRL-TK. Firefly luciferase and Renilla luciferase activity were measured. Hybrid mRNAs' abundance was measured using reverse transcription real-time PCR. Firefly luciferase expression of pGL-R was reduced to 13% by esiRNA-R. Expression of pGLS was reduced to 11% by esiRNA-S. Expression of pGL-N was reduced to 40% by esiRNA-N. Control esiRNAs didn't affect luciferase expression; Hybrid mRNAs' abundance was dramatically reduced by corresponding esiRNAs. RNase III-prepared short interfering RNAs induce robust and specific degradation of SARS-coronavirus mRNAs in HEK293F cells. These siRNAs could be used to inhibit SARS-coronavirus in future research.</AbstractText>
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