Severe acute respiratory syndrome coronavirus infection of mice transgenic for the human angiotensin-converting enzyme 2 virus receptor

Chien-Te Tseng, Cheng Huang, Patrick Newman, Nan Wang, Krishna Narayanan, Douglas M. Watts, Shinji Makino, Michelle M. Packard, Sherif R. Zaki, Teh Sheng Chan, Clarence J. Peters

Research output: Contribution to journalArticle

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Abstract

Animal models for severe acute respiratory syndrome (SARS) coronavirus infection of humans are needed to elucidate SARS pathogenesis and develop vaccines and antivirals. We developed transgenic mice expressing human angiotensin-cooverting enzyme 2, a functional receptor for the virus, under the regulation of a global promoter. A transgenic lineage, designated AC70, was among the best characterized against SARS coronavirus infection, showing weight loss and other clinical manifestations before reaching 100% mortality within 8 days after intranasal infection. High virus titers were detected in the lungs and brains of traasgene-positive (Tg+) mice on days 1 and 3 after infection. Inflammatory mediators were also detected in these tissues, coinciding with high levels of virus replication. Lower virus titers were also detected in other tissues, including blood. In contrast, infected transgene-negative (Tg-) mice survived without showing any clinical illness. Pathologic examination suggests that the extensive involvement of the central nervous system likely contributed to the death of Tg+ mice, even though viral pneumonia was present. Preliminary studies with mice of a second lineage, AC63, in which the transgene expression was considerably less abundant than that in the AC70 line, revealed that virus replication was largely restricted to the lungs but not the brain. Importantly, despite significant weight loss, infected Tg+ AC63 mice eventually recovered from the illness without any mortality. The severity of the disease that developed in these transgenic mice-AC70 in particular-makes these mouse models valuable not only for evaluating the efficacy of antivirals and vaccines, but also for studying SARS coronavirus pathogenesis.

Original languageEnglish (US)
Pages (from-to)1162-1173
Number of pages12
JournalJournal of Virology
Volume81
Issue number3
DOIs
StatePublished - Feb 2007

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Coronavirus Infections
Virus Receptors
Severe Acute Respiratory Syndrome
peptidyl-dipeptidase A
Transgenic Mice
genetically modified organisms
mice
infection
Virus Replication
Viral Load
Transgenes
Antiviral Agents
virus replication
viral load
Weight Loss
Vaccines
transgenes
Viral Pneumonia
viral pneumonia
weight loss

ASJC Scopus subject areas

  • Immunology

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Severe acute respiratory syndrome coronavirus infection of mice transgenic for the human angiotensin-converting enzyme 2 virus receptor. / Tseng, Chien-Te; Huang, Cheng; Newman, Patrick; Wang, Nan; Narayanan, Krishna; Watts, Douglas M.; Makino, Shinji; Packard, Michelle M.; Zaki, Sherif R.; Chan, Teh Sheng; Peters, Clarence J.

In: Journal of Virology, Vol. 81, No. 3, 02.2007, p. 1162-1173.

Research output: Contribution to journalArticle

Tseng, Chien-Te ; Huang, Cheng ; Newman, Patrick ; Wang, Nan ; Narayanan, Krishna ; Watts, Douglas M. ; Makino, Shinji ; Packard, Michelle M. ; Zaki, Sherif R. ; Chan, Teh Sheng ; Peters, Clarence J. / Severe acute respiratory syndrome coronavirus infection of mice transgenic for the human angiotensin-converting enzyme 2 virus receptor. In: Journal of Virology. 2007 ; Vol. 81, No. 3. pp. 1162-1173.
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