Functional characterization of 5' untranslated region (UTR) secondary RNA structures in the replication of tick-borne encephalitis virus in mammalian cells.

Tick-borne Encephalitis Virus (TBEV) is an emerging flavivirus that causes neurological disorders including viral encephalitis of varying severity. Whilst secondary RNA structures within the 5' untranslated regions (UTRs) of many flaviviruses determine both virus replication and pathogenic outc...
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Autor*in:	Laura Upstone [verfasserIn] Robin Colley [verfasserIn] Mark Harris [verfasserIn] Niluka Goonawardane [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2023

Übergeordnetes Werk:	In: PLoS Neglected Tropical Diseases - Public Library of Science (PLoS), 2008, 17(2023), 1, p e0011098
Übergeordnetes Werk:	volume:17 ; year:2023 ; number:1, p e0011098

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc Journal toc

DOI / URN:	10.1371/journal.pntd.0011098

Katalog-ID:	DOAJ088388948

Internformat


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520			\|a Tick-borne Encephalitis Virus (TBEV) is an emerging flavivirus that causes neurological disorders including viral encephalitis of varying severity. Whilst secondary RNA structures within the 5' untranslated regions (UTRs) of many flaviviruses determine both virus replication and pathogenic outcomes in humans, these elements have not been systematically investigated for TBEV. In this study, we investigated the role of predicted RNA secondary elements of the first 107 nucleotides (nts) of the viral genome forming the stem-loop A (SLA). Experiments were performed in replicons and infectious TBEV system. This region comprises three distinct structures: 5' stem 0 (S0), stem-loop 1 (SL1) and stem-loop 2 (SL2). S0 was found to be essential for virus infection as mutations in the lower stem of this region significantly reduced virus replication. Point mutations in SL1 that preserved the Y-shape confirmation delayed viral RNA replication but did not abolish virus infectivity. Deletion of SL2 did not abolish infectivity but had a negligible effect on virus propagation. No correlation was observed between in vitro translation efficiency and virus infectivity, suggesting that the 5'UTR functions independently to virus translation. Together, these findings reveal distinct RNA elements within the 5'UTR that are essential for the stability and replication of viral RNA. We further identify changes in RNA folding that lead to altered TBEV infectivity and pathogenesis.
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author_variant	l u lu r c rc m h mh n g ng
matchkey_str	article:19352735:2023----::ucinlhrceiainfutasaergoureodrratutrsnhrpiainfikon
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callnumber-subject-code	RC
publishDate	2023
allfields	10.1371/journal.pntd.0011098 doi (DE-627)DOAJ088388948 (DE-599)DOAJ5a1288844aed44c49cfbec6140863941 DE-627 ger DE-627 rakwb eng RC955-962 RA1-1270 Laura Upstone verfasserin aut Functional characterization of 5' untranslated region (UTR) secondary RNA structures in the replication of tick-borne encephalitis virus in mammalian cells. 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Tick-borne Encephalitis Virus (TBEV) is an emerging flavivirus that causes neurological disorders including viral encephalitis of varying severity. Whilst secondary RNA structures within the 5' untranslated regions (UTRs) of many flaviviruses determine both virus replication and pathogenic outcomes in humans, these elements have not been systematically investigated for TBEV. In this study, we investigated the role of predicted RNA secondary elements of the first 107 nucleotides (nts) of the viral genome forming the stem-loop A (SLA). Experiments were performed in replicons and infectious TBEV system. This region comprises three distinct structures: 5' stem 0 (S0), stem-loop 1 (SL1) and stem-loop 2 (SL2). S0 was found to be essential for virus infection as mutations in the lower stem of this region significantly reduced virus replication. Point mutations in SL1 that preserved the Y-shape confirmation delayed viral RNA replication but did not abolish virus infectivity. Deletion of SL2 did not abolish infectivity but had a negligible effect on virus propagation. No correlation was observed between in vitro translation efficiency and virus infectivity, suggesting that the 5'UTR functions independently to virus translation. Together, these findings reveal distinct RNA elements within the 5'UTR that are essential for the stability and replication of viral RNA. We further identify changes in RNA folding that lead to altered TBEV infectivity and pathogenesis. Arctic medicine. Tropical medicine Public aspects of medicine Robin Colley verfasserin aut Mark Harris verfasserin aut Niluka Goonawardane verfasserin aut In PLoS Neglected Tropical Diseases Public Library of Science (PLoS), 2008 17(2023), 1, p e0011098 (DE-627)568915356 (DE-600)2429704-5 19352735 nnns volume:17 year:2023 number:1, p e0011098 https://doi.org/10.1371/journal.pntd.0011098 kostenfrei https://doaj.org/article/5a1288844aed44c49cfbec6140863941 kostenfrei https://doi.org/10.1371/journal.pntd.0011098 kostenfrei https://doaj.org/toc/1935-2727 Journal toc kostenfrei https://doaj.org/toc/1935-2735 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2190 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 17 2023 1, p e0011098
spelling	10.1371/journal.pntd.0011098 doi (DE-627)DOAJ088388948 (DE-599)DOAJ5a1288844aed44c49cfbec6140863941 DE-627 ger DE-627 rakwb eng RC955-962 RA1-1270 Laura Upstone verfasserin aut Functional characterization of 5' untranslated region (UTR) secondary RNA structures in the replication of tick-borne encephalitis virus in mammalian cells. 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Tick-borne Encephalitis Virus (TBEV) is an emerging flavivirus that causes neurological disorders including viral encephalitis of varying severity. Whilst secondary RNA structures within the 5' untranslated regions (UTRs) of many flaviviruses determine both virus replication and pathogenic outcomes in humans, these elements have not been systematically investigated for TBEV. In this study, we investigated the role of predicted RNA secondary elements of the first 107 nucleotides (nts) of the viral genome forming the stem-loop A (SLA). Experiments were performed in replicons and infectious TBEV system. This region comprises three distinct structures: 5' stem 0 (S0), stem-loop 1 (SL1) and stem-loop 2 (SL2). S0 was found to be essential for virus infection as mutations in the lower stem of this region significantly reduced virus replication. Point mutations in SL1 that preserved the Y-shape confirmation delayed viral RNA replication but did not abolish virus infectivity. Deletion of SL2 did not abolish infectivity but had a negligible effect on virus propagation. No correlation was observed between in vitro translation efficiency and virus infectivity, suggesting that the 5'UTR functions independently to virus translation. Together, these findings reveal distinct RNA elements within the 5'UTR that are essential for the stability and replication of viral RNA. We further identify changes in RNA folding that lead to altered TBEV infectivity and pathogenesis. Arctic medicine. Tropical medicine Public aspects of medicine Robin Colley verfasserin aut Mark Harris verfasserin aut Niluka Goonawardane verfasserin aut In PLoS Neglected Tropical Diseases Public Library of Science (PLoS), 2008 17(2023), 1, p e0011098 (DE-627)568915356 (DE-600)2429704-5 19352735 nnns volume:17 year:2023 number:1, p e0011098 https://doi.org/10.1371/journal.pntd.0011098 kostenfrei https://doaj.org/article/5a1288844aed44c49cfbec6140863941 kostenfrei https://doi.org/10.1371/journal.pntd.0011098 kostenfrei https://doaj.org/toc/1935-2727 Journal toc kostenfrei https://doaj.org/toc/1935-2735 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2190 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 17 2023 1, p e0011098
allfields_unstemmed	10.1371/journal.pntd.0011098 doi (DE-627)DOAJ088388948 (DE-599)DOAJ5a1288844aed44c49cfbec6140863941 DE-627 ger DE-627 rakwb eng RC955-962 RA1-1270 Laura Upstone verfasserin aut Functional characterization of 5' untranslated region (UTR) secondary RNA structures in the replication of tick-borne encephalitis virus in mammalian cells. 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Tick-borne Encephalitis Virus (TBEV) is an emerging flavivirus that causes neurological disorders including viral encephalitis of varying severity. Whilst secondary RNA structures within the 5' untranslated regions (UTRs) of many flaviviruses determine both virus replication and pathogenic outcomes in humans, these elements have not been systematically investigated for TBEV. In this study, we investigated the role of predicted RNA secondary elements of the first 107 nucleotides (nts) of the viral genome forming the stem-loop A (SLA). Experiments were performed in replicons and infectious TBEV system. This region comprises three distinct structures: 5' stem 0 (S0), stem-loop 1 (SL1) and stem-loop 2 (SL2). S0 was found to be essential for virus infection as mutations in the lower stem of this region significantly reduced virus replication. Point mutations in SL1 that preserved the Y-shape confirmation delayed viral RNA replication but did not abolish virus infectivity. Deletion of SL2 did not abolish infectivity but had a negligible effect on virus propagation. No correlation was observed between in vitro translation efficiency and virus infectivity, suggesting that the 5'UTR functions independently to virus translation. Together, these findings reveal distinct RNA elements within the 5'UTR that are essential for the stability and replication of viral RNA. We further identify changes in RNA folding that lead to altered TBEV infectivity and pathogenesis. Arctic medicine. Tropical medicine Public aspects of medicine Robin Colley verfasserin aut Mark Harris verfasserin aut Niluka Goonawardane verfasserin aut In PLoS Neglected Tropical Diseases Public Library of Science (PLoS), 2008 17(2023), 1, p e0011098 (DE-627)568915356 (DE-600)2429704-5 19352735 nnns volume:17 year:2023 number:1, p e0011098 https://doi.org/10.1371/journal.pntd.0011098 kostenfrei https://doaj.org/article/5a1288844aed44c49cfbec6140863941 kostenfrei https://doi.org/10.1371/journal.pntd.0011098 kostenfrei https://doaj.org/toc/1935-2727 Journal toc kostenfrei https://doaj.org/toc/1935-2735 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2190 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 17 2023 1, p e0011098
allfieldsGer	10.1371/journal.pntd.0011098 doi (DE-627)DOAJ088388948 (DE-599)DOAJ5a1288844aed44c49cfbec6140863941 DE-627 ger DE-627 rakwb eng RC955-962 RA1-1270 Laura Upstone verfasserin aut Functional characterization of 5' untranslated region (UTR) secondary RNA structures in the replication of tick-borne encephalitis virus in mammalian cells. 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Tick-borne Encephalitis Virus (TBEV) is an emerging flavivirus that causes neurological disorders including viral encephalitis of varying severity. Whilst secondary RNA structures within the 5' untranslated regions (UTRs) of many flaviviruses determine both virus replication and pathogenic outcomes in humans, these elements have not been systematically investigated for TBEV. In this study, we investigated the role of predicted RNA secondary elements of the first 107 nucleotides (nts) of the viral genome forming the stem-loop A (SLA). Experiments were performed in replicons and infectious TBEV system. This region comprises three distinct structures: 5' stem 0 (S0), stem-loop 1 (SL1) and stem-loop 2 (SL2). S0 was found to be essential for virus infection as mutations in the lower stem of this region significantly reduced virus replication. Point mutations in SL1 that preserved the Y-shape confirmation delayed viral RNA replication but did not abolish virus infectivity. Deletion of SL2 did not abolish infectivity but had a negligible effect on virus propagation. No correlation was observed between in vitro translation efficiency and virus infectivity, suggesting that the 5'UTR functions independently to virus translation. Together, these findings reveal distinct RNA elements within the 5'UTR that are essential for the stability and replication of viral RNA. We further identify changes in RNA folding that lead to altered TBEV infectivity and pathogenesis. Arctic medicine. Tropical medicine Public aspects of medicine Robin Colley verfasserin aut Mark Harris verfasserin aut Niluka Goonawardane verfasserin aut In PLoS Neglected Tropical Diseases Public Library of Science (PLoS), 2008 17(2023), 1, p e0011098 (DE-627)568915356 (DE-600)2429704-5 19352735 nnns volume:17 year:2023 number:1, p e0011098 https://doi.org/10.1371/journal.pntd.0011098 kostenfrei https://doaj.org/article/5a1288844aed44c49cfbec6140863941 kostenfrei https://doi.org/10.1371/journal.pntd.0011098 kostenfrei https://doaj.org/toc/1935-2727 Journal toc kostenfrei https://doaj.org/toc/1935-2735 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2190 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 17 2023 1, p e0011098
allfieldsSound	10.1371/journal.pntd.0011098 doi (DE-627)DOAJ088388948 (DE-599)DOAJ5a1288844aed44c49cfbec6140863941 DE-627 ger DE-627 rakwb eng RC955-962 RA1-1270 Laura Upstone verfasserin aut Functional characterization of 5' untranslated region (UTR) secondary RNA structures in the replication of tick-borne encephalitis virus in mammalian cells. 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Tick-borne Encephalitis Virus (TBEV) is an emerging flavivirus that causes neurological disorders including viral encephalitis of varying severity. Whilst secondary RNA structures within the 5' untranslated regions (UTRs) of many flaviviruses determine both virus replication and pathogenic outcomes in humans, these elements have not been systematically investigated for TBEV. In this study, we investigated the role of predicted RNA secondary elements of the first 107 nucleotides (nts) of the viral genome forming the stem-loop A (SLA). Experiments were performed in replicons and infectious TBEV system. This region comprises three distinct structures: 5' stem 0 (S0), stem-loop 1 (SL1) and stem-loop 2 (SL2). S0 was found to be essential for virus infection as mutations in the lower stem of this region significantly reduced virus replication. Point mutations in SL1 that preserved the Y-shape confirmation delayed viral RNA replication but did not abolish virus infectivity. Deletion of SL2 did not abolish infectivity but had a negligible effect on virus propagation. No correlation was observed between in vitro translation efficiency and virus infectivity, suggesting that the 5'UTR functions independently to virus translation. Together, these findings reveal distinct RNA elements within the 5'UTR that are essential for the stability and replication of viral RNA. We further identify changes in RNA folding that lead to altered TBEV infectivity and pathogenesis. Arctic medicine. Tropical medicine Public aspects of medicine Robin Colley verfasserin aut Mark Harris verfasserin aut Niluka Goonawardane verfasserin aut In PLoS Neglected Tropical Diseases Public Library of Science (PLoS), 2008 17(2023), 1, p e0011098 (DE-627)568915356 (DE-600)2429704-5 19352735 nnns volume:17 year:2023 number:1, p e0011098 https://doi.org/10.1371/journal.pntd.0011098 kostenfrei https://doaj.org/article/5a1288844aed44c49cfbec6140863941 kostenfrei https://doi.org/10.1371/journal.pntd.0011098 kostenfrei https://doaj.org/toc/1935-2727 Journal toc kostenfrei https://doaj.org/toc/1935-2735 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2190 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 17 2023 1, p e0011098
language	English
source	In PLoS Neglected Tropical Diseases 17(2023), 1, p e0011098 volume:17 year:2023 number:1, p e0011098
sourceStr	In PLoS Neglected Tropical Diseases 17(2023), 1, p e0011098 volume:17 year:2023 number:1, p e0011098
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	Arctic medicine. Tropical medicine Public aspects of medicine
isfreeaccess_bool	true
container_title	PLoS Neglected Tropical Diseases
authorswithroles_txt_mv	Laura Upstone @@aut@@ Robin Colley @@aut@@ Mark Harris @@aut@@ Niluka Goonawardane @@aut@@
publishDateDaySort_date	2023-01-01T00:00:00Z
hierarchy_top_id	568915356
id	DOAJ088388948
language_de	englisch
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callnumber-first	R - Medicine
author	Laura Upstone
spellingShingle	Laura Upstone misc RC955-962 misc RA1-1270 misc Arctic medicine. Tropical medicine misc Public aspects of medicine Functional characterization of 5' untranslated region (UTR) secondary RNA structures in the replication of tick-borne encephalitis virus in mammalian cells.
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topic_title	RC955-962 RA1-1270 Functional characterization of 5' untranslated region (UTR) secondary RNA structures in the replication of tick-borne encephalitis virus in mammalian cells
topic	misc RC955-962 misc RA1-1270 misc Arctic medicine. Tropical medicine misc Public aspects of medicine
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title	Functional characterization of 5' untranslated region (UTR) secondary RNA structures in the replication of tick-borne encephalitis virus in mammalian cells.
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title_full	Functional characterization of 5' untranslated region (UTR) secondary RNA structures in the replication of tick-borne encephalitis virus in mammalian cells
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title_sort	functional characterization of 5' untranslated region (utr) secondary rna structures in the replication of tick-borne encephalitis virus in mammalian cells
callnumber	RC955-962
title_auth	Functional characterization of 5' untranslated region (UTR) secondary RNA structures in the replication of tick-borne encephalitis virus in mammalian cells.
abstract	Tick-borne Encephalitis Virus (TBEV) is an emerging flavivirus that causes neurological disorders including viral encephalitis of varying severity. Whilst secondary RNA structures within the 5' untranslated regions (UTRs) of many flaviviruses determine both virus replication and pathogenic outcomes in humans, these elements have not been systematically investigated for TBEV. In this study, we investigated the role of predicted RNA secondary elements of the first 107 nucleotides (nts) of the viral genome forming the stem-loop A (SLA). Experiments were performed in replicons and infectious TBEV system. This region comprises three distinct structures: 5' stem 0 (S0), stem-loop 1 (SL1) and stem-loop 2 (SL2). S0 was found to be essential for virus infection as mutations in the lower stem of this region significantly reduced virus replication. Point mutations in SL1 that preserved the Y-shape confirmation delayed viral RNA replication but did not abolish virus infectivity. Deletion of SL2 did not abolish infectivity but had a negligible effect on virus propagation. No correlation was observed between in vitro translation efficiency and virus infectivity, suggesting that the 5'UTR functions independently to virus translation. Together, these findings reveal distinct RNA elements within the 5'UTR that are essential for the stability and replication of viral RNA. We further identify changes in RNA folding that lead to altered TBEV infectivity and pathogenesis.
abstractGer	Tick-borne Encephalitis Virus (TBEV) is an emerging flavivirus that causes neurological disorders including viral encephalitis of varying severity. Whilst secondary RNA structures within the 5' untranslated regions (UTRs) of many flaviviruses determine both virus replication and pathogenic outcomes in humans, these elements have not been systematically investigated for TBEV. In this study, we investigated the role of predicted RNA secondary elements of the first 107 nucleotides (nts) of the viral genome forming the stem-loop A (SLA). Experiments were performed in replicons and infectious TBEV system. This region comprises three distinct structures: 5' stem 0 (S0), stem-loop 1 (SL1) and stem-loop 2 (SL2). S0 was found to be essential for virus infection as mutations in the lower stem of this region significantly reduced virus replication. Point mutations in SL1 that preserved the Y-shape confirmation delayed viral RNA replication but did not abolish virus infectivity. Deletion of SL2 did not abolish infectivity but had a negligible effect on virus propagation. No correlation was observed between in vitro translation efficiency and virus infectivity, suggesting that the 5'UTR functions independently to virus translation. Together, these findings reveal distinct RNA elements within the 5'UTR that are essential for the stability and replication of viral RNA. We further identify changes in RNA folding that lead to altered TBEV infectivity and pathogenesis.
abstract_unstemmed	Tick-borne Encephalitis Virus (TBEV) is an emerging flavivirus that causes neurological disorders including viral encephalitis of varying severity. Whilst secondary RNA structures within the 5' untranslated regions (UTRs) of many flaviviruses determine both virus replication and pathogenic outcomes in humans, these elements have not been systematically investigated for TBEV. In this study, we investigated the role of predicted RNA secondary elements of the first 107 nucleotides (nts) of the viral genome forming the stem-loop A (SLA). Experiments were performed in replicons and infectious TBEV system. This region comprises three distinct structures: 5' stem 0 (S0), stem-loop 1 (SL1) and stem-loop 2 (SL2). S0 was found to be essential for virus infection as mutations in the lower stem of this region significantly reduced virus replication. Point mutations in SL1 that preserved the Y-shape confirmation delayed viral RNA replication but did not abolish virus infectivity. Deletion of SL2 did not abolish infectivity but had a negligible effect on virus propagation. No correlation was observed between in vitro translation efficiency and virus infectivity, suggesting that the 5'UTR functions independently to virus translation. Together, these findings reveal distinct RNA elements within the 5'UTR that are essential for the stability and replication of viral RNA. We further identify changes in RNA folding that lead to altered TBEV infectivity and pathogenesis.
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container_issue	1, p e0011098
title_short	Functional characterization of 5' untranslated region (UTR) secondary RNA structures in the replication of tick-borne encephalitis virus in mammalian cells.
url	https://doi.org/10.1371/journal.pntd.0011098 https://doaj.org/article/5a1288844aed44c49cfbec6140863941 https://doaj.org/toc/1935-2727 https://doaj.org/toc/1935-2735
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doi_str	10.1371/journal.pntd.0011098
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up_date	2024-07-03T17:25:59.591Z
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Functional characterization of 5' untranslated region (UTR) secondary RNA structures in the replication of tick-borne encephalitis virus in mammalian cells.

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