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Immunization with an attenuated severe acute respiratory syndrome coronavirus deleted in E protein protects against lethal respiratory disease
- Source :
- Virology; Vol 399, Virology, Digital.CSIC. Repositorio Institucional del CSIC, instname
- Publication Year :
- 2010
- Publisher :
- Elsevier BV, 2010.
-
Abstract
- The severe acute respiratory syndrome coronavirus (SARS-CoV) caused substantial morbidity and mortality in 2002-2003. Deletion of the envelope (E) protein modestly diminished virus growth in tissue culture but abrogated virulence in animals. Here, we show that immunization with rSARS-CoV-ΔE or SARS-CoV-Δ[E,6-9b] (deleted in accessory proteins (6, 7a, 7b, 8a, 8b, 9b) in addition to E) nearly completely protected BALB/c mice from fatal respiratory disease caused by mouse-adapted SARS-CoV and partly protected hACE2 Tg mice from lethal disease. hACE2 Tg mice, which express the human SARS-CoV receptor, are extremely susceptible to infection. We also show that rSARS-CoV-ΔE and rSARS-CoV-Δ[E,6-9b] induced anti-virus T cell and antibody responses. Further, the E-deleted viruses were stable after 16 blind passages through tissue culture cells, with only a single mutation in the surface glycoprotein detected. The passaged virus remained avirulent in mice. These results suggest that rSARS-CoV-ΔE is an efficacious vaccine candidate that might be useful if SARS recurred. © 2009 Elsevier Inc. All rights reserved.<br />This work was supported by grants from the National Institutes of Health (US) (PO1 AI060699-01) (SP); RO1 AI079424-01A1 (SP and LE), the Ministry of Education and Science of Spain (BIO2007-60978) (LE), and the European Commission (EMPERIE PROJECT, Ref. No. 223498) (LE). J.N. was supported by an NIH training grant (T32 AI007533).
- Subjects :
- viruses
Respiratory virus
CD8-Positive T-Lymphocytes
Antibodies, Viral
Severe Acute Respiratory Syndrome
medicine.disease_cause
Viroporin Proteins
Mice
Tissue culture
Viral Envelope Proteins
Chlorocebus aethiops
Coronavirus
Immunity, Cellular
Mice, Inbred BALB C
0303 health sciences
biology
Respiratory disease
virus diseases
3. Good health
medicine.anatomical_structure
Severe acute respiratory syndrome-related coronavirus
Antibody
Rodent model
T cell
Enzyme-Linked Immunosorbent Assay
Vaccines, Attenuated
Article
Virus
03 medical and health sciences
Immunity
Virology
Severe Acute Respiratory syndrome
medicine
Animals
Humans
Vero Cells
030304 developmental biology
030306 microbiology
biochemical phenomena, metabolism, and nutrition
T cell response
medicine.disease
Immunity, Humoral
respiratory tract diseases
Disease Models, Animal
Mutation
biology.protein
Vaccine
Subjects
Details
- ISSN :
- 00426822
- Volume :
- 399
- Database :
- OpenAIRE
- Journal :
- Virology
- Accession number :
- edsair.doi.dedup.....2525474e6c58362e3e08461aa2ef7a4e