REGN-CoV-derived Anti-SARS-CoV-2 RBD monoclonal antibodies
Product | Unit size | Cat. code | Docs. | Qty. | Price | |
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Anti-CoV2RBD-imd-mIgG2a Recombinant monoclonal mouse IgG2a (Imdevimab-derived) |
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3 x 100 µg |
srbdc4-mab10-3
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Anti-CoV2RBD-imd-hIgG1 Recombinant monoclonal human IgG1 (Imdevimab-derived) |
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3 x 100 µg |
srbdc4-mab1-3
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Anti-CoV2RBD-cas-mIgG2a Recombinant monoclonal mouse IgG2a (Casirivimab-derived) |
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3 x 100 µg |
srbdc3-mab10-3
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Anti-CoV2RBD-cas-hIgG1 Recombinant monoclonal human IgG1 (Casirivimab-derived) |
Show product |
3 x 100 µg |
srbdc3-mab1-3
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SARS-CoV-2 specific neutralization by Casirivimab & Imdevimab
Specific SARS-CoV-2 Spike-RBD recombinant human IgG1 & mouse IgG2a antibodies
Antibody description
InvivoGen provides a set of recombinant monoclonal antibodies (mAbs) featuring either a human IgG1 or a mouse IgG2a constant region, and the variable region of 'Casirivimab (REGN10933)' or 'Imdevimab (REGN10987'), two clones originally described as potent SARS-CoV-2 neutralizing mAbs [1]:
— Anti-CoV2RBD-cas-hIgG1 and Anti-CoV2RBD-cas-mIgG2a (derived from Casirivimab)
— Anti-CoV2RBD-imd-hIgG1 and Anti-CoV2RBD-imd-mIgG2a (derived from Imdevimab)
➔ These antibodies have been functionally validated by ELISA and FACS on SARS-CoV2 Spike variants.
InvivoGen's Anti-CoV2RBD-cas and Anti-CoV2RBD-imd mAbs have been generated by recombinant DNA technology, produced in CHO cells, and purified by affinity chromatography, ensuring lot-to-lot reproducibility. Furthermore, these mAbs have been functionally validated by ELISA (see data below). The absence of bacterial contamination has been confirmed by cellular assays.
Background
Casirivimab and Imdevimab were generated using both humanized mice and convalescent patients [1]. These mAbs specifically target two distinct and non-overlapping regions of the SARS-CoV-2 S-RBD and potently block its binding to the ACE2 receptor on target cells [1].
More details on Casirivimab and Imdevimab
Applications
- Detecting the presence of SARS-CoV-2 in culture supernatant and/or in serum (ELISA)
- Flow cytometry binding assays
- Developing neutralizing antibody cocktails against SARS-CoV-2
- Monitoring SARS-CoV-2 variant escape
Quality control
- Functionally validated by ELISA using Spike-RBD proteins derived from SARS-CoV-2 variants and either HRP or Luciferase detection
References
1. Hansen J. et al., 2020. Studies in humanized mice and convalescent humans yield a SARS-CoV-2 antibody cocktail. Science 369:1010-1014.
Back to the topSpecifications
Specificity: SARS-CoV-2 Spike RBD
Clonality: Monoclonal
Isotypes: hIgG1 or mIgG2a
Source: CHO cells
Formulation: 0.2 μm filtered solution in a sodium phosphate buffer with glycine, saccharose, and stabilizing agents.
Purification: purified by affinity chromatography with protein G (hIgG1) or protein A (mIgG2a)
Quality control:
- The complete sequence of each antibody construct has been verified.
- Antibody binding has been validated by ELISA using Spike-RBD proteins derived from SARS-CoV-2 variants and either HRP or Luciferase detection.
- The absence of bacterial contamination (e.g. lipoproteins and endotoxins) has been confirmed using HEK-Blue™ TLR2 and HEK-Blue™ TLR4 cellular assays.
Contents
Note: Each antibody is sold separately.
- 3 x 100 µg purified antibody, azide-free, and lyophilized
The product is shipped at room temperature.
Upon receipt, store at -20 °C.
Details
Casirivimab and Imdevimab were generated using both humanized mice and convalescent patients [1]. These mAbs specifically target two distinct and non-overlapping regions of the SARS-CoV-2 S-RBD and potently block its binding to the ACE2 receptor on target cells [1]. Treatment using a combination of these mAbs (known as REGEN-COV™ or REGN-COV2) has been authorized under emergency use for COVID-19 outpatients [2-4]. Prophylactic and therapeutic administration of this mAb cocktail almost completely blocks the establishment of virus infection in non-human primates [5] and enhances clearance of the virus in patients whose endogenous immune response has not yet been initiated [2].
Learn more about the SARS-CoV-2 Spike protein.
References
1. Hansen J. et al., 2020. Studies in humanized mice and convalescent humans yield a SARS-CoV-2 antibody cocktail. Science 369:1010-1014.
2. Weinreich D.M. et al., 2021. REGN-COV2, a Neutralizing Antibody Cocktail, in Outpatients with Covid-19. N Engl J Med. 384(3):238-251.
3. https://www.fda.gov/media/145610/download.
4. https://www.ema.europa.eu/en/news/ema-issues-advice-use-regn-cov2-antibody-combination-casirivimab-imdevimab.
5. Baum A. et al., 2020. REGN-COV2 antibodies prevent and treat SARS-CoV-2 infection in rhesus macaques and hamsters. Science 370:1110-1115.