Identification of the hyper-variable genomic hotspot for the novel coronavirus SARS-CoV-2
Identifieur interne : 000A99 ( Pmc/Corpus ); précédent : 000A98; suivant : 000B00Identification of the hyper-variable genomic hotspot for the novel coronavirus SARS-CoV-2
Auteurs : Feng Wen ; Hai Yu ; Jinyue Guo ; Yong Li ; Kaijian Luo ; Shujian HuangSource :
- The Journal of Infection [ 0163-4453 ] ; 2020.
Url:
DOI: 10.1016/j.jinf.2020.02.027
PubMed: 32145215
PubMed Central: 7126159
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Identification of the hyper-variable genomic hotspot for the novel coronavirus SARS-CoV-2</title><author><name sortKey="Wen, Feng" sort="Wen, Feng" uniqKey="Wen F" first="Feng" last="Wen">Feng Wen</name><affiliation><nlm:aff id="aff0001">College of Life Science and Engineering, Foshan University, Foshan, 528231 Guangdong, China</nlm:aff></affiliation></author><author><name sortKey="Yu, Hai" sort="Yu, Hai" uniqKey="Yu H" first="Hai" last="Yu">Hai Yu</name><affiliation><nlm:aff id="aff0002">Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China</nlm:aff></affiliation><affiliation><nlm:aff id="aff0005">Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou 225009, China</nlm:aff></affiliation></author><author><name sortKey="Guo, Jinyue" sort="Guo, Jinyue" uniqKey="Guo J" first="Jinyue" last="Guo">Jinyue Guo</name><affiliation><nlm:aff id="aff0001">College of Life Science and Engineering, Foshan University, Foshan, 528231 Guangdong, China</nlm:aff></affiliation></author><author><name sortKey="Li, Yong" sort="Li, Yong" uniqKey="Li Y" first="Yong" last="Li">Yong Li</name><affiliation><nlm:aff id="aff0003">College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang 330045 Jiangxi, China</nlm:aff></affiliation></author><author><name sortKey="Luo, Kaijian" sort="Luo, Kaijian" uniqKey="Luo K" first="Kaijian" last="Luo">Kaijian Luo</name><affiliation><nlm:aff id="aff0004">College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642 Guangdong, China</nlm:aff></affiliation></author><author><name sortKey="Huang, Shujian" sort="Huang, Shujian" uniqKey="Huang S" first="Shujian" last="Huang">Shujian Huang</name><affiliation><nlm:aff id="aff0001">College of Life Science and Engineering, Foshan University, Foshan, 528231 Guangdong, China</nlm:aff></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">32145215</idno><idno type="pmc">7126159</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7126159</idno><idno type="RBID">PMC:7126159</idno><idno type="doi">10.1016/j.jinf.2020.02.027</idno><date when="2020">2020</date><idno type="wicri:Area/Pmc/Corpus">000A99</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Corpus" wicri:corpus="PMC">000A99</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Identification of the hyper-variable genomic hotspot for the novel coronavirus SARS-CoV-2</title><author><name sortKey="Wen, Feng" sort="Wen, Feng" uniqKey="Wen F" first="Feng" last="Wen">Feng Wen</name><affiliation><nlm:aff id="aff0001">College of Life Science and Engineering, Foshan University, Foshan, 528231 Guangdong, China</nlm:aff></affiliation></author><author><name sortKey="Yu, Hai" sort="Yu, Hai" uniqKey="Yu H" first="Hai" last="Yu">Hai Yu</name><affiliation><nlm:aff id="aff0002">Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China</nlm:aff></affiliation><affiliation><nlm:aff id="aff0005">Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou 225009, China</nlm:aff></affiliation></author><author><name sortKey="Guo, Jinyue" sort="Guo, Jinyue" uniqKey="Guo J" first="Jinyue" last="Guo">Jinyue Guo</name><affiliation><nlm:aff id="aff0001">College of Life Science and Engineering, Foshan University, Foshan, 528231 Guangdong, China</nlm:aff></affiliation></author><author><name sortKey="Li, Yong" sort="Li, Yong" uniqKey="Li Y" first="Yong" last="Li">Yong Li</name><affiliation><nlm:aff id="aff0003">College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang 330045 Jiangxi, China</nlm:aff></affiliation></author><author><name sortKey="Luo, Kaijian" sort="Luo, Kaijian" uniqKey="Luo K" first="Kaijian" last="Luo">Kaijian Luo</name><affiliation><nlm:aff id="aff0004">College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642 Guangdong, China</nlm:aff></affiliation></author><author><name sortKey="Huang, Shujian" sort="Huang, Shujian" uniqKey="Huang S" first="Shujian" last="Huang">Shujian Huang</name><affiliation><nlm:aff id="aff0001">College of Life Science and Engineering, Foshan University, Foshan, 528231 Guangdong, China</nlm:aff></affiliation></author></analytic><series><title level="j">The Journal of Infection</title><idno type="ISSN">0163-4453</idno><idno type="eISSN">1532-2742</idno><imprint><date when="2020">2020</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Zhang, J" uniqKey="Zhang J">J. 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<front><journal-meta><journal-id journal-id-type="nlm-ta">J Infect</journal-id><journal-id journal-id-type="iso-abbrev">J. Infect</journal-id><journal-title-group><journal-title>The Journal of Infection</journal-title></journal-title-group><issn pub-type="ppub">0163-4453</issn><issn pub-type="epub">1532-2742</issn><publisher><publisher-name>The British Infection Association. Published by Elsevier Ltd.</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="pmid">32145215</article-id><article-id pub-id-type="pmc">7126159</article-id><article-id pub-id-type="publisher-id">S0163-4453(20)30108-0</article-id><article-id pub-id-type="doi">10.1016/j.jinf.2020.02.027</article-id><article-categories><subj-group subj-group-type="heading"><subject>Article</subject></subj-group></article-categories><title-group><article-title>Identification of the hyper-variable genomic hotspot for the novel coronavirus SARS-CoV-2</article-title></title-group><contrib-group><contrib contrib-type="author" id="au0001"><name><surname>Wen</surname><given-names>Feng</given-names></name><email>wenfengjlu@163.com</email><xref rid="aff0001" ref-type="aff">a</xref><xref rid="cor0001" ref-type="corresp">⁎</xref><xref rid="fn1" ref-type="fn">1</xref></contrib><contrib contrib-type="author" id="au0002"><name><surname>Yu</surname><given-names>Hai</given-names></name><xref rid="aff0002" ref-type="aff">b</xref><xref rid="aff0005" ref-type="aff">e</xref><xref rid="fn1" ref-type="fn">1</xref></contrib><contrib contrib-type="author" id="au0003"><name><surname>Guo</surname><given-names>Jinyue</given-names></name><xref rid="aff0001" ref-type="aff">a</xref></contrib><contrib contrib-type="author" id="au0004"><name><surname>Li</surname><given-names>Yong</given-names></name><xref rid="aff0003" ref-type="aff">c</xref></contrib><contrib contrib-type="author" id="au0005"><name><surname>Luo</surname><given-names>Kaijian</given-names></name><xref rid="aff0004" ref-type="aff">d</xref></contrib><contrib contrib-type="author" id="au0006"><name><surname>Huang</surname><given-names>Shujian</given-names></name><email>617955368@qq.com</email><xref rid="aff0001" ref-type="aff">a</xref><xref rid="cor0001" ref-type="corresp">⁎</xref></contrib></contrib-group><aff id="aff0001"><label>a</label>College of Life Science and Engineering, Foshan University, Foshan, 528231 Guangdong, China</aff><aff id="aff0002"><label>b</label>Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China</aff><aff id="aff0003"><label>c</label>College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang 330045 Jiangxi, China</aff><aff id="aff0004"><label>d</label>College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642 Guangdong, China</aff><aff id="aff0005"><label>e</label>Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou 225009, China</aff><author-notes><corresp id="cor0001"><label>⁎</label>Corresponding authors. <email>wenfengjlu@163.com</email><email>617955368@qq.com</email></corresp><fn id="fn1"><label>1</label><p id="notep0001">These authors contribute equally to this work.</p></fn></author-notes><pub-date pub-type="pmc-release"><day>5</day><month>3</month><year>2020</year></pub-date><pmc-comment> PMC Release delay is 0 months and 0 days and was based on .</pmc-comment>
<pub-date pub-type="epub"><day>5</day><month>3</month><year>2020</year></pub-date><history><date date-type="accepted"><day>29</day><month>2</month><year>2020</year></date></history><permissions><copyright-statement>© 2020 The British Infection Association. Published by Elsevier Ltd. All rights reserved.</copyright-statement><copyright-year>2020</copyright-year><copyright-holder></copyright-holder><license><license-p>Since January 2020 Elsevier has created a COVID-19 resource centre with free information in English and Mandarin on the novel coronavirus COVID-19. The COVID-19 resource centre is hosted on Elsevier Connect, the company's public news and information website. Elsevier hereby grants permission to make all its COVID-19-related research that is available on the COVID-19 resource centre - including this research content - immediately available in PubMed Central and other publicly funded repositories, such as the WHO COVID database with rights for unrestricted research re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for free by Elsevier for as long as the COVID-19 resource centre remains active.</license-p></license></permissions></article-meta></front><body><sec id="sec0001"><title>Dear editor</title><p id="para0002">A recent study in this journal studied the genomes of the novel SARS-like coronavirus (SARS-CoV-2) in China and suggested that the SARS-CoV-2 had undergone genetic recombination with SARS-related CoV<xref rid="bib0001" ref-type="bibr"><sup>1</sup></xref>. By February 14, 2020, a total of 66,576 confirmed cases of COVID-19, people infected with SARS-CoV-2, were reported in China, leading to 1524 deaths, per the Chinese CDC (<ext-link ext-link-type="uri" xlink:href="http://2019ncov.chinacdc.cn/2019-nCoV/" id="interref0001">http://2019ncov.chinacdc.cn/2019-nCoV/</ext-link>). Several full genomic sequences of this virus have been released for the study of its evolutionary origin and molecular characteristics<xref rid="bib0002" ref-type="bibr">2</xref>, <xref rid="bib0003" ref-type="bibr">3</xref>, <xref rid="bib0004" ref-type="bibr">4</xref>. Here, we analyzed the potential mutations that may have evolved after the virus became epidemic among humans and also the mutations resulting in the human adaptation.</p><p id="para0003">The sequences of BetaCoV were downloaded on February 3, 2020 from the GISAID platform<xref rid="bib0005" ref-type="bibr"><sup>5</sup></xref>. A total of 58 accessions were available, among which BetaCoV/bat/Yunnan/RaTG13/2013 is a known close relative of SARS-CoV-2. Four accessions, namely, BetaCov/Italy/INM1/2020, BetaCov/Italy/INM2/2020, BetaCoV/Kanagawa/1/2020, and BetaCoV/USA/IL1/2020, were excluded because of the short-truncated sequences or multiple ambiguous nucleotides. A total of 54 accessions (Supplementary Table 1) isolated from humans were utilized in the following analysis. The sequences NC_004718.3 of SARS coronavirus<xref rid="bib0006" ref-type="bibr"><sup>6</sup></xref> genes were utilized to define the protein products of SARS-CoV-2. The protein sequences of ORF1ab, S, E, M, and N genes were translated, and all of the loci without experimental evidences were excluded. First, the protein sequences of SARS-CoV-2 were compared with RaTG13, human SARS (NC_004718.3), bat SARS (DQ022305.2), and human MERS (NC_019843.3) by calculating the similarity in a given sliding window (<xref rid="fig0001" ref-type="fig">Fig. 1</xref>A). The sliding window was set to 500 for ORF1ab and S, and to 50 for proteins E, M, and N considering their short length. SARS-CoV-2 were highly similar to RaTG13 isolated from bats, showing 96% identity based on the whole-nucleotide sequences and 83% based on the protein sequences, suggesting a bat zoonotic origin of SARS-CoV-2. ORF1a, and the head of S seemed to have diverged from other beta coronaviruses.<fig id="fig0001"><label>Fig. 1</label><caption><p>(A) The similarity between SARS-CoV-2 and other beta coronaviruses using the sliding window showed that SARS-CoV-2 was similar to bat virus RaTG13. (B) The molecular phylogenetic tree based on protein sequences established the high similarity among SARS-CoV-2 and its near relatives. (C) The mutations that developed after it came to circulate among humans did not include any mutation with high occurrence. (D) The graphs show all of the differences between SARS-CoV-2 and its close relative strains isolated from bats.</p></caption><alt-text id="alt0001">Fig 1</alt-text><graphic xlink:href="gr1_lrg"></graphic></fig></p><p id="para0004">The molecular phylogenetic tree (<xref rid="fig0001" ref-type="fig">Fig. 1</xref>B) was built by using the maximum likelihood method based on the JTT matrix-based model<xref rid="bib0007" ref-type="bibr"><sup>7</sup></xref>. It hinted that the protein sequences of SARS-CoV-2 had over 99% similarity. Twenty-eight viruses had shared the same protein sequences, and could be the original strain circulated in the humans. The other viruses had only a few mutations from it. This indicates that the virus could have evolved for only a very short time after gaining the efficient human to human transmissibility, as expected. Next, we analyzed the mutations that occurred after infecting humans (<xref rid="fig0001" ref-type="fig">Fig. 1</xref>C) in order to identify mutations associated with more severe infection. Here, two accessions (BetaCoV/Shenzhen/SZTH-001/2020 and BetaCoV/Shenzhen/SZTH-004/2020) from Shenzhen, which had 5 and 16 mutations, respectively, were excluded, considering the possible experimental issues. All of the mutations only occurred once, so it is possible that all of these mutations occur naturally and are associated with viral survival and infection. Several mutations were clustered in peptides nsp3 and nsp4 of ORF1ab and in the header of S. These results suggested that there had probably been no hyper-variable genomic hotspot in the SARS-CoV-2 population until now.</p><p id="para0005">We compared these results with those of the work of Ceraolo and Giorgi<xref rid="bib0008" ref-type="bibr"><sup>8</sup></xref>, who reported at least two hyper-variable genomic hotspots based on the Shannon entropy of nucleotide sequences. They utilized all of the sequences, while we merged all of the fully identical sequences into one during our Shannon entropy calculation. As shown in <xref rid="fig0001" ref-type="fig">Fig. 1</xref>B, 28 sequences were merged into one in present study because they had been collected in such a short time, so collection time and location could not have produced any large bias. If those identical sequences were calculated individually, any mutations on these 28 sequences would have sharply increased Shannon entropy. The protein sequences were used to exclude any unimportant silent mutations. Finally, the sequences of earliest SARS-CoV-2 were compared with RaTG13 from bats (<xref rid="fig0001" ref-type="fig">Fig. 1</xref>D). Fisher's exact test with post hoc test suggested that nsp1, nsp3, and nsp15 of ORF1ab and gene S had significantly more mutations than other genes, which might facilitate human adaptation and infection.</p><p id="para0006">S gene encodes spike glycoprotein, which binds host ACE2 receptors and is required for initiation of the infection<xref rid="bib0009" ref-type="bibr"><sup>9</sup></xref>. They reported that a 193-amino acid fragment was able to bind ACE2 more efficiently than its unmutated counterpart. This region in which spike glycoprotein binds to ACE2 had 21 mutations not found in RaTG13, suggesting their role in the adaptation to human hosts. Peptide nsp1 facilitated viral gene expression and evasion from the host immune response<xref rid="bib0010" ref-type="bibr"><sup>10</sup></xref>. Peptide nsp3, named papain-like proteinase, was found to be associated with the cleavages, viral replication, and antagonization of innate immune. These two peptides are probably associated with the latent period after infection in humans. Peptide nsp15 acted as uridylate-specific endoribonuclease. These results collectively suggest that peptides nsp1, nsp3, and nsp15 might have unclear but critical roles in this outbreak of SARS-CoV-2.</p><p id="para0007">To summarize, this study confirmed the relationship of SARS-CoV-2 with other beta coronaviruses on the amino acid level. The hyper-variable genomic hotspot has been established in the SARS-CoV-2 population at the nucleotide but not the amino acid level, suggesting that there have been no beneficial mutations. The mutations in nsp1, nsp3, nsp15, and gene S that identified in this study would be associated with the SARS-CoV-2 epidemic and was worthy of further study.</p></sec><sec sec-type="COI-statement"><title>Declaration of Competing Interest</title><p id="para0009">None.</p></sec></body><back><ref-list id="cebibl1"><title>References</title><ref id="bib0001"><label>1</label><element-citation publication-type="journal" id="sbref0001"><person-group person-group-type="author"><name><surname>Zhang</surname><given-names>J.</given-names></name><name><surname>Ma</surname><given-names>K.</given-names></name><name><surname>Li</surname><given-names>H.</given-names></name><name><surname>Liao</surname><given-names>M.</given-names></name><name><surname>Qi</surname><given-names>W.</given-names></name></person-group><article-title>The continuous evolution and dissemination of 2019 novel human coronavirus</article-title><source>J. 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Virol.</source><volume>86</volume><issue>24</issue><year>2012</year><fpage>13598</fpage><lpage>13608</lpage><pub-id pub-id-type="pmid">23035226</pub-id></element-citation></ref></ref-list><sec id="sec0005" sec-type="supplementary-material"><label>Appendix</label><title>Supplementary materials</title><p id="para0008a"><supplementary-material content-type="local-data" id="ecom0001"><media xlink:href="mmc1.docx"><alt-text>Image, application 1</alt-text></media></supplementary-material></p></sec><ack id="ack0001"><sec id="sec0002"><title>Funding</title><p id="para0010">This study was supported by <funding-source id="gs0001">Key Laboratory for Preventive Research of Emerging Animal Diseases in Foshan University</funding-source> (KLPREAD201801-06), (KLPREAD201801-10), <funding-source id="gs0002">Youth Innovative Talents Project of Guangdong Province</funding-source> (2018KQNCX280), and <funding-source id="gs0003">National Key Research and Development Project</funding-source> (grant No.2017YFD0500800).</p></sec><sec id="sec0003"><title>Acknowledgement</title><p id="para0011">We thank the researchers who deposited the SARS-CoV-2 sequences in the GISAID. We thank LetPub for its linguistic assistance during the preparation of this manuscript.</p></sec></ack><fn-group><fn id="sec0004" fn-type="supplementary-material"><p id="para0002a">Supplementary material associated with this article can be found, in the online version, at doi:<ext-link ext-link-type="uri" xlink:href="https://doi.org/10.1016/j.jinf.2020.02.027" id="interref0002">10.1016/j.jinf.2020.02.027</ext-link>.</p></fn></fn-group></back></pmc></record>Pour manipuler ce document sous Unix (Dilib)
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