Human IFNAR Antibody - Anifrolumab Biosimilar

Human IgG1 Fc silent - CAS #1326232-46-5

ABOUT

Anti-human IFNAR1 - Anifrolumab biosimilar - CAS #1326232-46-5

Anti-hIFNAR-hIgG1-FES is the biosimilar antibody of Anifrolumab, a human type I interferon (IFN) receptor subunit 1 (IFNAR1) antibody that inhibits type I IFN signaling. This monoclonal antibody (mAb) is FDA-approved for the treatment of systemic lupus erythematosus (SLE).

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Anti-hIFNAR-hIgG1-FES comprises the variable region of Anifrolumab and the effectorless IgG1 constant region of Anifrolumab harboring a triple mutation L234F/L235E/P331S (FES). 

This antibody can be used together with HEK-Blue™ IFN-α/β cells for screening and neutralization assays to inhibit IFN-α/β signaling induced by recombinant human IFN-α or IFN-β (see figure).

 

Key features

  • Each lot is functionally tested and validated
  • The complete sequence of the antibody construct has been verified
  • The absence of endotoxins is determined by the EndotoxDetect assay

 

If you are interested in the corresponding isotype control Anti-β-Gal-hIgG1-FES mAb, please contact us.

All products are for research use only, and not for human or veterinary use.

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SPECIFICATIONS

Specifications

Target

IFNAR1

Target species

Human

Species
Human
Isotype
hIgG1-FES
Clone
Anifrolumab
CAS number
1326232-46-5
Molecular weight
147.2 kDa
Tag
Tag-free
Source
CHO cells
Production details
Animal-free
Purification
Protein A
Formulation buffer

Sodium phosphate buffer with glycine, saccharose, and stabilizing agents

Preservative
Azide-free
Purity
≥ 95 %
Appearance (form)
Lyophilized
Reconstitution buffer
Sterile water (not provided)
Endotoxin

Negative (tested using EndotoxDetect™ assay)

Tested applications

Neutralization assay, ELISA, Fc effector function analysis

Quality control

Each lot is functionally tested and validated.

CONTENTS

Contents

  • Product: 
    Anti-hIFNAR-hIgG1-FES
  • Cat code: 
    hifnar-mab16
  • Quantity: 
    100 µg

Shipping & Storage

  • Shipping method:  Room temperature
  • Storage:

    • -20°C
    Stability: -20°C for up to 1 year

    Caution:

    • Avoid repeated freeze-thaw cycles

Details

Anifrolumab background

Anifrolumab is a fully human mAb designed to target the type I interferon (IFN) receptor subunit 1 (IFNAR1) and to block the type I IFN signaling. Anifrolumab features a triple mutation L234F/L235E/P331S in the heavy chain to reduce engagement with the cell surface Fc gamma receptor (FcγR) and potential Fc-mediated effector function, such as antibody-dependent cell-mediated cytotoxicity (ADCC) [1-2]. According to the FDA, it is a first-in-class medication highlighting its innovative and unique mechanism of action [3]. It has been approved as an add-on therapy for moderately to severely active systemic lupus erythematosus (SLE) [3].

 

References:

1. Plüß M, et al., 2022. Rapid Response of Refractory Systemic Lupus Erythematosus Skin Manifestations to Anifrolumab-A Case-Based Review of Clinical Trial Data Suggesting a Domain-Based Therapeutic Approach. J Clin Med. 11(12):3449.
2. Riggs JM, et al., 2018. Characterization of anifrolumab, a fully human anti-interferon receptor antagonist antibody for the treatment of systemic lupus erythematosus. Lupus Sci Med. 5(1):e000261.
3. U.S. Food and Drug Administration (FDA) (Report). 2022. Advancing Health Through Innovation: New Drug Therapy Approvals 2021.

DOCUMENTS

Documents

Anti-hIFNAR-hIgG1-FES

Technical Data Sheet

Validation Data Sheet

Safety Data Sheet

Certificate of analysis

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