Development of a Mouse-Adapted MERS Coronavirus.
Methods Mol Biol
; 2099: 161-171, 2020.
Article
in English
| MEDLINE | ID: covidwho-1292551
ABSTRACT
First identified in 2012, Middle East respiratory syndrome coronavirus (MERS-CoV) is a novel virus that can cause acute respiratory distress syndrome (ARDS), multiorgan failure, and death, with a case fatality rate of ~35%. An animal model that supports MERS-CoV infection and causes severe lung disease is useful to study pathogenesis and evaluate therapies and vaccines. The murine dipeptidyl peptidase 4 (Dpp4) protein is not a functional receptor for MERS-CoV; thus, mice are resistant to MERS-CoV infection. We generated human DPP4 knock-in (hDPP4 KI) mice by replacing exons 10-12 at the mouse Dpp4 locus with exons 10-12 from the human DPP4 gene. The resultant human DPP4 KI mice are permissive to MERS-CoV (HCoV-EMC/2012 strain) infection but develop no disease. To generate a mouse model with associated morbidity and mortality from respiratory disease, we serially passaged HCoV-EMC/2012 strain in the lungs of young hDPP4 KI mice. After 30 in vivo passages, an adapted virus clone was isolated and designated MERSMA6.1.2. This virus clone produced significantly higher titers than the parental clone in the lungs of hDPP4 KI mice and caused diffuse lung injury and a fatal respiratory infection. In this chapter, we will describe in detail the procedures used to mouse adapt MERS-CoV by serial passage of the virus in lungs. We also describe the methods used to isolate virus clones and characterize virus infection.
Keywords
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Main subject:
Respiratory Distress Syndrome
/
Coronavirus Infections
/
Dipeptidyl Peptidase 4
/
Middle East Respiratory Syndrome Coronavirus
Type of study:
Experimental Studies
Topics:
Vaccines
Limits:
Animals
/
Humans
Language:
English
Journal:
Methods Mol Biol
Journal subject:
Molecular Biology
Year:
2020
Document Type:
Article
Affiliation country:
978-1-0716-0211-9_13
Similar
MEDLINE
...
LILACS
LIS