Abstract
Antibodies are widely used in therapeutic, diagnostic, and research applications, and antibody derivatives such as F(ab′)2 fragments are used when only a particular antibody region is required. F(ab′)2 can be produced through antibody engineering, but some applications require F(ab′)2 produced from an original formulated antibody or directly from a polyclonal antibody pool. The cysteine protease immunoglobulin-degrading enzyme (IdeS) from Streptococcus pyogenes digests immunoglobulin G (IgG) specifically and efficiently to produce F(ab′)2. Here we detail the production and purification of recombinant IdeS; its utilization to digest monoclonal or polyclonal antibodies to F(ab′)2 fragments; and F(ab′)2 purification through consecutive affinity chromatography steps. The resultant F(ab′)2 exhibit high purity, retain antigen-binding functionality, and are readily utilizable in various downstream applications.
Original language | English |
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Article number | e119 |
Journal | Current Protocols in Molecular Biology |
Volume | 131 |
Issue number | 1 |
DOIs | |
State | Published - 1 Jun 2020 |
Keywords
- IdeS
- mAbs
- monoclonal antibody
- polyclonal antibodies
All Science Journal Classification (ASJC) codes
- Molecular Biology