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Application: 1. Study the mechanism of viral transduction.
2. Screening for neutralizing antibodies for SARS-CoV-2 Spike and ACE2
Description: The pandemic coronavirus disease 2019 (COVID-19) is caused by Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2). As the first step of 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 ACE2 may offer protection against the viral infection.
The SARS-CoV-2 Spike Pseudotyped Lentivirus (Luc-eGFP dual reporter) were produced by replacing the VSV-G fusion glycoprotein with SARS-CoV-2 Spike protein (Genbank Accession #QHD43416.1) as a surrogate viral envelope protein. These pseudovirions also contain a firefly luciferase and eGFP cassette (Luc-P2A-eGFP) driven by a CMV promoter. The luciferase and eGFP are coexpressed under the CMV promoter in the transduced cells. Therefore, the Spike-mediated entry into the target cell can be conveniently measured via luciferase reporter activity or eGFP expression. The SARS-CoV-2 Spike pseudotyped lentivirus can be used in a cellular assay to measure the activity of neutralizing antibody against SARS-CoV-2.
Format: The functional titer of SARS-CoV-2 Spike Pseudotyped Lentivirus (~1-2 x 10^5 TU/ml) is significantly lower than VSV-G pseudotyped lentivirus (>10^7 TU/ml), although the amount of lenti particles are similar (>109 LP/ml). The exact titer is provided with each shipment.
Formulation: The lentiviruses were produced from HEK293T cells in medium containing 90% DMEM + 10% FBS.
Storage Stability: Lentiviruses are shipped with dry ice. For long term storage, it is recommended to store the virus at -80°C. Avoid repeated freeze-thaw cycles. Titers can drop significantly with each freeze-thaw cycle.
Supplied As: The functional titer of SARS-CoV-2 Spike Pseudotyped Lentivirus (~1-2 x 105 TU/ml) is significantly lower than VSV-G pseudotyped lentivirus (>107 TU/ml), although the amount of lenti particles are similar (>109 LP/ml). The exact titer is provided with each shipment.
Warnings: Biosafety: of the HIV genes (gag, pol, rev) will be expressed in the transduced cells, as they are expressed from packaging plasmids lacking the packing signal. Although the pseudotyped lentiviruses are replication-incompetent, they require the use of a Biosafety Level 2 facility. BPS recommends following all local federal, state, and institutional regulations and using all appropriate safety precautions.
Biosafety Level: BSL-2
SIN Vector?: No
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