Spike (SARS-CoV-1) Pseudotyped Lentivirus (eGFP Reporter)
Severe acute respiratory syndrome (SARS) was the first new infectious disease identified in the twenty-first century. It is a viral respiratory disease caused by severe acute respiratory syndrome coronavirus (SARS-CoV-1). The first known cases occurred in November 2002, and these viral infections led to the 2002–2004 SARS outbreak. Since 2004, no cases of SARS-CoV-1 have been reported worldwide. A virus very similar to SARS-CoV-1 was discovered in late 2019. This virus, named severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), is the causative pathogen of COVID-19, the spread of which started the COVID-19 pandemic.
SARS-CoV-1 attaches to the host cell surface before entering the cell. The Spike protein on the virus recognizes and binds to the Angiotensin-Converting Enzyme 2 (ACE2) receptor found on the surface of human airway epithelia as well as lung parenchyma. Drugs targeting the interaction between the Spike protein of SARS-CoV-1 and ACE2 may offer protection against the viral infection.
The Spike (SARS-CoV-1) Pseudotyped Lentiviruses were produced with SARS-CoV-1 Spike (Genbank Accession #YP_009825051.1) as the envelope glycoproteins instead of the commonly used VSV-G. These pseudovirions contain the eGFP gene driven by a CMV promoter (Figure 1), therefore, the spike-mediated cell entry can be determined via eGFP fluorescence. The Spike (SARS-CoV-1) pseudotyped lentivirus can be used to measure the activity of a neutralizing antibody against SARS-CoV-1 in a cellular context, using a Biosafety Level 2 facility.
As shown in Figure 2, the Spike (SARS-CoV-1) pseudovirus has been validated for use with ACE2-HEK293 target cells (which overexpress ACE2; BPS Bioscience #79951).
Figure 1. Schematic of the eGFP Reporter in Spike (SARS-CoV-1) Pseudotyped Lentivirus
| Name | Ordering Information |
| Thaw Medium 1 | BPS Bioscience #60187 |
| ACE2- HEK293 Recombinant Cell Line | BPS Bioscience #79951 |
| 96-well white clear-bottom assay plate | Corning #3610 |
The lentiviruses were produced from HEK293T cells. Supplied in medium containing 90% DMEM + 10% FBS.
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