Invivogen
Menu

Wuhan-Hu-1 Spike (D614G) Pseudotyping Vector

pLV-SpikeV1 Unit size Cat. code Docs Qty Price
Spike (G614-variant) pseudotyping plasmid (previously called 'pLV-SARS2-S-d19 D614G')
20 µg
plv-spike-v1
+-
$409.00

You may also need : Human ACE2 & TMPRSS2 expressing A549 Cells | View more associated products

For lentiviral particle pseudotyping with the SARS-CoV-2 Spike (G614-variant) 

pLV-SpikeV1 has been specifically designed for the pseudotyping of lentiviral particles with the SARS-CoV-2 Spike (S) protein when co-transfected with plasmids encoding a reporter and accessory proteins (not provided). pLV-SpikeV1 encodes the full-length Spike sequence from the Wuhan-Hu-1 isolate with the D614G mutation, and for optimal expression, it is codon-optimized and the C‑terminal ER-retention signal has been removed [1, 2].

 More details

 

Spike G614-variant pseudotyping vector
Spike G614-variant pseudotyping vector

Gene Description

This plasmid encodes the Spike protein from the SARS-CoV-2 Wuhan-Hu-1 isolate with the D614G mutation. Since April 2020, this signature mutation has globally replaced the original sequence and is present in all subsequent variants of SARS-CoV-2 from Clade 20/Lineage B (Nextstrain/Pango lineage classification) [3].

  • S1 domain: D614G

Learn more about the emerging SARS-CoV-2 variants around the world

 

General Plasmid Description

This plasmid features a potent mammalian expression cassette composed of the ubiquitous human-(h)CMV composite promoter, a rabbit β-globin intron directly upstream of the spike gene, and a rabbit β-globin polyadenylation (pAn) signal. The spike coding sequence includes the SARS-CoV-2 signal sequence and the S1/S2 furin cleavage site [4]. These plasmids are selectable with ampicillin in E. coli.

 

Applications

  • Generation of Spike pseudotyped lentiviral particles upon co-transfection with reporter and accessory protein plasmids (not provided).
  • Screening of SARS-CoV-2 inhibitors including small molecules, monoclonal antibodies, or convalescent plasma.

 

References:

1. Johnson, M.C. et al. 2020. Optimized Pseudotyping Conditions for the SARS-COV-2 Spike Glycoprotein. J Virol 94.
2. Ou, X. et al. 2020. Characterization of spike glycoprotein of SARS-CoV-2 on virus entry and its immune cross-reactivity with SARS-CoV. Nat Commun 11, 1620.
3. Korber B.et al. 2020. Tracking changes in SARS-CoV-2 Spike: evidence that D614G increases infectivity of the COVID‑19 virus. Cell. 182:1-16.
4. Coutard, B. et al. 2020. The spike glycoprotein of the new coronavirus 2019-nCoV contains a furin-like cleavage site absent in CoV of the same clade. Antiviral Res 176, 104742.

Back to the top

Specifications

  • Origin: Wuhan-Hu-1 isolate
  • Sequence Reference: NC_045512.2 (with D614G mutation)
  • Codon Optimized
  • ORF size: 3765 bp
  • Sequencing primers:
    - Forward rbt β-globin intron: TGGTTACAATGATATACACTG
    - Reverse rbt β-globin pAn: CTCAAGGGGCTTCATGATGTC
  • Quality Control:
    - Plasmid construct is confirmed by restriction analysis and full‑length open reading frame (ORF) sequencing.
    - After purification by ion-exchange chromatography, predominant supercoiled conformation is verified by electrophoresis.
Back to the top

Contents

pLV-SpikeV1 is provided as follows:

  • 20 μg of lyophilized DNA

 

room temperature The product is shipped at room temperature.

store Lyophilized DNA should be stored at -20 °C.

stability Resuspended DNA should be stored at -20 °C and is stable up to 1 year.

 

Back to the top

Details

Spike-pseudotyping of lentiviral particles

InvivoGen's pLV-Spike plasmid collection has been designed for pseudotyping lentiviral particles with the SARS-CoV-2 Spike (S) protein. The S protein a structural glycoprotein expressed on the surface of SARS‑CoV-2. It mediates membrane fusion and viral entry into target cells upon binding to the host receptor ACE2 and its cleavage by cellular proteases such as TMPRSS2 [1]. Notably, the C‑terminal cytoplasmic tail of the S protein encodes a presumptive endoplasmic reticulum (ER)‑retention motif (KxHxx), which has previously been shown to enable the accumulation of SARS‑CoV S proteins at the ER‑Golgi intermediate compartment (ERGIC) and facilitate their incorporation into new virions [2]. The removal of this motif (d19) has been shown to increase the expression of the spike protein in pseudovirions [3,4].

Pseudotyped particle production involves the co-transfection of 293T cells with a reporter protein vector (e.g. GFP), one or several plasmids encoding the necessary lentiviral proteins, and the pseudotyping pLV-Spike plasmids. The transfected cells produce SARS‑CoV‑2 Spike (S)‑pseudotyped lentiviral particles, which can then be used to infect permissive cells, such as ACE2‑expressing HEK293-derived cells and ACE2‑TMPRSS2‑expressing A549-derived cells.

 

References

1. Hoffmann M. et al. 2020. SARS-CoV-2 cell entry depends on ACE2 and TMPRSS2 and is blocked by a clinically proven protease inhibitor. Cell. 181:1-16.
2. Ujike, M. et al. 2016. The contribution of the cytoplasmic retrieval signal of severe acute respiratory syndrome coronavirus to intracellular accumulation of S proteins and incorporation of S protein into virus-like particles. J Gen Virol 97, 1853-1864.
3. Johnson, M.C. et al. 2020. Optimized pseudotyping conditions for the SARS-COV2 Spike glycoprotein. J Virol. 94(21):e01062-20
4. Ou, X. et al. 2020. Characterization of spike glycoprotein of SARS-CoV-2 on virus entry and its immune cross-reactivity with SARS-CoV. Nat Commun 11, 1620.

Back to the top
Customer Service
& Technical Support
Shopping cart is empty