Volume 39 Issue 1
Jan.  2018
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Gary Wong, Wen-Guang Cao, Shi-Hua He, Zi-Rui Zhang, Wen-Jun Zhu, Estella Moffat, Hideki Ebihara, Carissa Embury-Hyatt, Xiang-Guo Qiu. Development and characterization of a guinea pig model for Marburg virus[J]. Zoological Research, 2018, 39(1): 32-41. doi: 10.24272/j.issn.2095-8137.2017.054
Citation: Gary Wong, Wen-Guang Cao, Shi-Hua He, Zi-Rui Zhang, Wen-Jun Zhu, Estella Moffat, Hideki Ebihara, Carissa Embury-Hyatt, Xiang-Guo Qiu. Development and characterization of a guinea pig model for Marburg virus[J]. Zoological Research, 2018, 39(1): 32-41. doi: 10.24272/j.issn.2095-8137.2017.054

Development and characterization of a guinea pig model for Marburg virus

doi: 10.24272/j.issn.2095-8137.2017.054
Funds:  This study was supported by the Public Health Agency of Canada (PHAC), partially supported by the NIH and CIHR grants to X. G. Qiu (U19 AI109762-1 and CIHR-IER-143487, respectively), and grants from the National Natural Science Foundation of China International Cooperation and Exchange Program (8161101193) and National Science and Technology Major Project (2016ZX10004222) to G. Wong
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  • Corresponding author: Xiang-Guo Qiu,E-mail:xiangguo.qiu@phac-aspc.gc.ca
  • Received Date: 2017-07-05
  • Rev Recd Date: 2017-09-22
  • Publish Date: 2018-01-18
  • The Angolan strain of Marburg virus (MARV/Ang) can cause lethal disease in humans with a case fatality rate of up to 90%, but infection of immunocompetent rodents do not result in any observable symptoms. Our previous work includes the development and characterization of a MARV/Ang variant that can cause lethal disease in mice (MARV/Ang-MA), with the aim of using this tool to screen for promising prophylactic and therapeutic candidates. An intermediate animal model is needed to confirm any findings from mice studies before testing in the gold-standard non-human primate (NHP) model. In this study, we serially passaged the clinical isolate of MARV/Ang in the livers and spleens of guinea pigs until a variant emerged that causes 100% lethality in guinea pigs (MARV/Ang-GA). Animals infected with MARV/Ang-GA showed signs of filovirus infection including lymphocytopenia, thrombocytopenia, and high viremia leading to spread to major organs, including the liver, spleen, lungs, and kidneys. The MARV/Ang-GA guinea pigs died between 7–9 days after infection, and the LD50 was calculated to be 1.1×10–1 TCID50 (median tissue culture infective dose). Mutations in MARV/Ang-GA were identified and compared to sequences of known rodent-adapted MARV/Ang variants, which may benefit future studies characterizing important host adaptation sites in the MARV/Ang viral genome.
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Development and characterization of a guinea pig model for Marburg virus

doi: 10.24272/j.issn.2095-8137.2017.054
Funds:  This study was supported by the Public Health Agency of Canada (PHAC), partially supported by the NIH and CIHR grants to X. G. Qiu (U19 AI109762-1 and CIHR-IER-143487, respectively), and grants from the National Natural Science Foundation of China International Cooperation and Exchange Program (8161101193) and National Science and Technology Major Project (2016ZX10004222) to G. Wong
    Corresponding author: Xiang-Guo Qiu,E-mail:xiangguo.qiu@phac-aspc.gc.ca

Abstract: The Angolan strain of Marburg virus (MARV/Ang) can cause lethal disease in humans with a case fatality rate of up to 90%, but infection of immunocompetent rodents do not result in any observable symptoms. Our previous work includes the development and characterization of a MARV/Ang variant that can cause lethal disease in mice (MARV/Ang-MA), with the aim of using this tool to screen for promising prophylactic and therapeutic candidates. An intermediate animal model is needed to confirm any findings from mice studies before testing in the gold-standard non-human primate (NHP) model. In this study, we serially passaged the clinical isolate of MARV/Ang in the livers and spleens of guinea pigs until a variant emerged that causes 100% lethality in guinea pigs (MARV/Ang-GA). Animals infected with MARV/Ang-GA showed signs of filovirus infection including lymphocytopenia, thrombocytopenia, and high viremia leading to spread to major organs, including the liver, spleen, lungs, and kidneys. The MARV/Ang-GA guinea pigs died between 7–9 days after infection, and the LD50 was calculated to be 1.1×10–1 TCID50 (median tissue culture infective dose). Mutations in MARV/Ang-GA were identified and compared to sequences of known rodent-adapted MARV/Ang variants, which may benefit future studies characterizing important host adaptation sites in the MARV/Ang viral genome.

Gary Wong, Wen-Guang Cao, Shi-Hua He, Zi-Rui Zhang, Wen-Jun Zhu, Estella Moffat, Hideki Ebihara, Carissa Embury-Hyatt, Xiang-Guo Qiu. Development and characterization of a guinea pig model for Marburg virus[J]. Zoological Research, 2018, 39(1): 32-41. doi: 10.24272/j.issn.2095-8137.2017.054
Citation: Gary Wong, Wen-Guang Cao, Shi-Hua He, Zi-Rui Zhang, Wen-Jun Zhu, Estella Moffat, Hideki Ebihara, Carissa Embury-Hyatt, Xiang-Guo Qiu. Development and characterization of a guinea pig model for Marburg virus[J]. Zoological Research, 2018, 39(1): 32-41. doi: 10.24272/j.issn.2095-8137.2017.054

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