Spike (BA.1.1, Omicron Variant R346K) (SARS-CoV-2) Pseudotyped Lentivirus (eGFP Reporter)

• 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 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 ACE2 may offer protection against the viral infection. The Omicron Variant was identified in South Africa in November of 2021. This variant has a large number of mutations that allow the virus to spread more easily and quickly than other variants. As of February 2022, Omicron variants have been divided into four distinct sub-lineages: BA.1 (B.1.1.529), BA.1.1, BA.2, and BA.3. Compared with BA.1 (B.1.1.529), BA.1.1 has an additional R346K substitution in the spike protein.The Spike (BA.1.1, Omicron Variant R346K) (SARS-CoV-2) Pseudotyped Lentiviruses were produced with SARS-CoV-2 BA.1.1 Variant Spike (Genbank Accession #QHD43416.1 containing all the BA.1.1 mutations; see below for details) 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 (BA.1.1, Omicron Variant R346K) (SARS-CoV-2) pseudotyped lentivirus can be used to measure the activity of neutralizing antibody against SARS-CoV-2 BA.1.1 variant in a Biosafety Level 2 facility.As shown in Figures 2, the Spike Omicron pseudovirus has been validated for use with target cells ACE2-HEK293 (which overexpress ACE2; BPS Bioscience #79951) .Spike Mutations in BA.1.1 Omicron Variant R346K:A67V, Δ69-70, T95I, G142D, Δ143-145, Δ211, L212I, ins214EPE, G339D, R346K, S371L, S373P, S375F, K417N, N440K, G446S, S477N, T478K, E484A, Q493R, G496S, Q498R, N501Y, Y505H, T547K, D614G, H655Y, N679K, P681H, N764K, D796Y, N856K, Q954H, N969K, L981F

• Applications:

  Screening for neutralizing antibodies for the SARS-CoV-2 BA.1.1 variant in ACE2-HEK293 cells.

• Shipping Conditions:

  -80°C

• Storage Conditions:

  Lentiviruses are shipped with dry ice. For long term storage, it is recommended to store the virus at -80°C.

• Notes:

  BiosafetyNone 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.License DisclosureVisitbpsbioscience.com/licensefor the label license and other key information about this product.Troubleshooting GuideVisitbpsbioscience.com/lentivirus-faqfor detailed troubleshooting instructions. For all further questions, please email[email protected].

• Formulation:

  The lentiviruses were produced from HEK293T cells. Supplied in medium containing 90% DMEM + 10% FBS.