Spike (D614G) (SARS-CoV-2) Pseudotyped VSV Delta G (Luciferase Reporter)
The Spike (D614G) (SARS-CoV-2) Pseudotyped VSV Delta G (Luciferase Reporter) was produced with SARS-CoV-2 Spike (Genbank Accession #QHD43416.1; with D614G mutation) as the envelope glycoprotein instead of VSV-G. The pseudovirions contain the firefly luciferase gene; therefore, the spike-mediated cell entry can be measured via luciferase activity. The Spike (D614G) (SARS-CoV-2) Pseudotyped VSV Delta G (Luciferase Reporter) can be used to measure the activity of a neutralizing antibody against SARS-CoV-2 D614G variant in a Biosafety Level 2 facility.
As shown in Figures 1 and 2, the Spike (D614G) (SARS-CoV-2) Pseudotyped VSV Delta G (Luciferase Reporter) has been validated for use with target cells Vero-E6 and ACE2-HEK293 (BPS Bioscience #79951). Spike VSV Delta G is preferred over lentiviral-based spike pseudoviruses for use in cells such as Vero-E6 parental cells.
| Name | Ordering Information |
| Thaw Medium 1 | BPS Bioscience #60187 |
| Bald VSV Delta G (Luciferase reporter) | BPS Bioscience #78636 |
| Vero-E6 | ATCC #CRL-1586 |
| ACE2-HEK293 Recombinant Cell Line | BPS Bioscience #79951 |
| Spike Neutralizing Antibody (Clone G10xA1) (SARS-CoV-2) | BPS Bioscience #101326 |
| ONE-Step™ Luciferase Assay System | BPS Bioscience #60690 |
| 96-well tissue culture treated, white clear-bottom assay plate | Corning #3610 |
The pseudoviruses were produced from HEK293T cells. They are supplied in cell culture medium containing 90% DMEM + 10% FBS.
The pandemic coronavirus disease 2019 (COVID-19) is caused by Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2). As the first step of the viral replication, the virus attaches to the host cell surface before entering the cell. The viral Spike protein recognizes and attaches to the Angiotensin-Converting Enzyme 2 (ACE2) receptor found on the surface of type I and II pneumocytes, endothelial cells, and ciliated bronchial epithelial cells. Drugs targeting the interaction between the Spike protein of SARS-CoV-2 and human ACE2 may offer protection against viral infection.
Vesicular stomatitis virus (VSV) is an enveloped, negative-stranded RNA virus that infects a wide range of animals and less frequently humans, causing mild flu-like symptoms. Its simple structure and its ability to grow in most mammalian cell types has made VSV a valuable tool to study virus entry, replication, and assembly. The glycoprotein of VSV (VSV-G), which binds to the LDL-receptor (low-density lipoprotein receptor), is responsible for the attachment and entry of VSV into a susceptible host cell. Recombinant VSV in which the glycoprotein was deleted (VSV Delta G) can accept viral envelop proteins from a variety of other viruses, allowing to generate pseudotypes that represent robust models to screen for neutralizing antibodies and other inhibitors of virus entry. The pseudoviruses can be engineered to transduce a reporter gene such as Firefly Luciferase or a fluorescent protein, so that viral entry can be monitored using luminescence or fluorescence.
The Spike (D614G) (SARS-CoV-2) Pseudotyped VSV Delta G (Luciferase Reporter) virus contains D614G variant SARS-CoV-2 Spike instead of VSV-G, which allows the pseudovirus to bind to ACE2-expressing cells.
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