Replication of MERS and SARS coronaviruses in bat cells offers insights to their ancestral origins
Previous findings of Middle East Respiratory Syndrome coronavirus (MERS-CoV)-related viruses in bats, and the ability of Tylonycteris-BatCoV HKU4 spike protein to utilize MERS-CoV receptor, human dipeptidyl peptidase 4 hDPP4, suggest a bat ancestral origin of MERS-CoV. We developed 12 primary bat cell lines from seven bat species, including Tylonycteris pachypus, Pipistrellus abramus and Rhinolophus sinicus (hosts of Tylonycteris-BatCoV HKU4, Pipistrellus-BatCoV HKU5, and SARS-related-CoV respectively), and tested their susceptibilities to MERS-CoVs, SARS-CoV, and human coronavirus 229E (HCoV-229E). Five cell lines, including P. abramus and R. sinicus but not T. pachypus cells, were susceptible to human MERS-CoV EMC/2012. However, three tested camel MERS-CoV strains showed different infectivities, with only two strains capable of infecting three and one cell lines respectively. SARS-CoV can only replicate in R. sinicus cells, while HCoV-229E cannot replicate in any bat cells. Bat dipeptidyl peptidase 4 (DPP4) sequences were closely related to those of human and non-human primates but distinct from dromedary DPP4 sequence. Critical residues for binding to MERS-CoV spike protein were mostly conserved in bat DPP4. DPP4 was expressed in the five bat cells susceptible to MERS-CoV, with significantly higher mRNA expression levels than those in non-susceptible cells (P = 0.0174), supporting that DPP4 expression is critical for MERS-CoV infection in bats. However, overexpression of T. pachypus DPP4 failed to confer MERS-CoV susceptibility in T. pachypus cells, suggesting other cellular factors in determining viral replication. The broad cellular tropism of MERS-CoV should prompt further exploration of host diversity of related viruses to identify its ancestral origin.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2018 |
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| Erschienen: |
2018 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:7 |
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| Enthalten in: |
Emerging microbes & infections - 7(2018), 1 vom: 10. Dez., Seite 209 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Lau, Susanna K P [VerfasserIn] |
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| Links: |
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| Themen: |
Dipeptidyl Peptidase 4 |
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| Anmerkungen: |
Date Completed 22.04.2019 Date Revised 07.12.2022 published: Electronic Citation Status MEDLINE |
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| doi: |
10.1038/s41426-018-0208-9 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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NLM291622054 |
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| 520 | |a Previous findings of Middle East Respiratory Syndrome coronavirus (MERS-CoV)-related viruses in bats, and the ability of Tylonycteris-BatCoV HKU4 spike protein to utilize MERS-CoV receptor, human dipeptidyl peptidase 4 hDPP4, suggest a bat ancestral origin of MERS-CoV. We developed 12 primary bat cell lines from seven bat species, including Tylonycteris pachypus, Pipistrellus abramus and Rhinolophus sinicus (hosts of Tylonycteris-BatCoV HKU4, Pipistrellus-BatCoV HKU5, and SARS-related-CoV respectively), and tested their susceptibilities to MERS-CoVs, SARS-CoV, and human coronavirus 229E (HCoV-229E). Five cell lines, including P. abramus and R. sinicus but not T. pachypus cells, were susceptible to human MERS-CoV EMC/2012. However, three tested camel MERS-CoV strains showed different infectivities, with only two strains capable of infecting three and one cell lines respectively. SARS-CoV can only replicate in R. sinicus cells, while HCoV-229E cannot replicate in any bat cells. Bat dipeptidyl peptidase 4 (DPP4) sequences were closely related to those of human and non-human primates but distinct from dromedary DPP4 sequence. Critical residues for binding to MERS-CoV spike protein were mostly conserved in bat DPP4. DPP4 was expressed in the five bat cells susceptible to MERS-CoV, with significantly higher mRNA expression levels than those in non-susceptible cells (P = 0.0174), supporting that DPP4 expression is critical for MERS-CoV infection in bats. However, overexpression of T. pachypus DPP4 failed to confer MERS-CoV susceptibility in T. pachypus cells, suggesting other cellular factors in determining viral replication. The broad cellular tropism of MERS-CoV should prompt further exploration of host diversity of related viruses to identify its ancestral origin | ||
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| 700 | 1 | |a Fung, Joshua |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Kenneth S M |e verfasserin |4 aut | |
| 700 | 1 | |a Wong, Emily Y M |e verfasserin |4 aut | |
| 700 | 1 | |a Ahmed, Syed Shakeel |e verfasserin |4 aut | |
| 700 | 1 | |a Chan, Jasper F W |e verfasserin |4 aut | |
| 700 | 1 | |a Kok, Raven K H |e verfasserin |4 aut | |
| 700 | 1 | |a Chan, Kwok-Hung |e verfasserin |4 aut | |
| 700 | 1 | |a Wernery, Ulrich |e verfasserin |4 aut | |
| 700 | 1 | |a Yuen, Kwok-Yung |e verfasserin |4 aut | |
| 700 | 1 | |a Woo, Patrick C Y |e verfasserin |4 aut | |
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