miR-122, small RNA annealing and sequence mutations alter the predicted structure of the Hepatitis C virus 5' UTR RNA to stabilize and promote viral RNA accumulation.
miR-122, small RNA annealing and sequence mutations alter the predicted structure of the Hepatitis C virus 5' UTR RNA to stabilize and promote viral RNA accumulation.
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DOI:
10.1093/nar/gky662
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发表时间:
2018-10-12
影响因子:
14.9
通讯作者:
Wilson JA
中科院分区:
文献类型:
--
作者:
Amador-Cañizares Y;Panigrahi M;Huys A;Kunden RD;Adams HM;Schinold MJ;Wilson JA
Annealing of the liver-specific microRNA, miR-122, to the Hepatitis C virus (HCV) 5′ UTR is required for efficient virus replication. By using siRNAs to pressure escape mutations, 30 replication-competent HCV genomes having nucleotide changes in the conserved 5′ untranslated region (UTR) were identified. In silico analysis predicted that miR-122 annealing induces canonical HCV genomic 5′ UTR RNA folding, and mutant 5′ UTR sequences that promoted miR-122-independent HCV replication favored the formation of the canonical RNA structure, even in the absence of miR-122. Additionally, some mutant viruses adapted to use the siRNA as a miR-122-mimic. We further demonstrate that small RNAs that anneal with perfect complementarity to the 5′ UTR stabilize and promote HCV genome accumulation. Thus, HCV genome stabilization and life-cycle promotion does not require the specific annealing pattern demonstrated for miR-122 nor 5′ end annealing or 3′ overhanging nucleotides. Replication promotion by perfect-match siRNAs was observed in Ago2 knockout cells revealing that other Ago isoforms can support HCV replication. At last, we present a model for miR-122 promotion of the HCV life cycle in which miRNA annealing to the 5′ UTR, in conjunction with any Ago isoform, modifies the 5′ UTR structure to stabilize the viral genome and promote HCV RNA accumulation.
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影响因子:
14.9
作者:
Du, Q;Thonberg, H;Wang, J;Wahlestedt, C;Liang, ZC
通讯作者:
Liang, ZC
DOI:
10.1093/bioinformatics/btp250
发表时间:
2009-08-01
期刊:
Bioinformatics (Oxford, England)
影响因子:
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DOI:
10.1073/pnas.1012464108
发表时间:
2011-02-22
影响因子:
11.1
作者:
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通讯作者:
Sagan, Selena M.
影响因子:
14.9
作者:
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通讯作者:
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