SARS CoV subunit vaccine: antibody-mediated neutralisation and enhancement.
1. A SARS vaccine was produced based on recombinant native full-length Spike-protein trimers (triSpike) and efficient establishment of a vaccination procedure in rodents. 2. Antibody-mediated enhancement of SARS-CoV infection with anti-SARS-CoV Spike immune-serum was observed in vitro. 3. Antibody-mediated infection of SARS-CoV triggers entry into human haematopoietic cells via an FcγR-dependent and ACE2-, pH-, cysteine-protease-independent pathways. 4. The antibody-mediated enhancement phenomenon is not a mandatory component of the humoral immune response elicited by SARS vaccines, as pure neutralising antibody only could be obtained. 5. Occurrence of immune-mediated enhancement of SARS-CoV infection raises safety concerns regarding the use of SARS-CoV vaccine in humans and enables new ways to investigate SARS pathogenesis (tropism and immune response deregulation).
Duke Scholars
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Related Subject Headings
- Virus Internalization
- Viral Envelope Proteins
- Vaccines
- Spike Glycoprotein, Coronavirus
- Severe acute respiratory syndrome-related coronavirus
- Severe Acute Respiratory Syndrome
- Receptors, Fc
- Peptidyl-Dipeptidase A
- Monocytes
- Mice, Inbred BALB C
Citation
Published In
ISSN
Publication Date
Volume
Start / End Page
Related Subject Headings
- Virus Internalization
- Viral Envelope Proteins
- Vaccines
- Spike Glycoprotein, Coronavirus
- Severe acute respiratory syndrome-related coronavirus
- Severe Acute Respiratory Syndrome
- Receptors, Fc
- Peptidyl-Dipeptidase A
- Monocytes
- Mice, Inbred BALB C