Rapid Generation of Monoclonal Antibodies from Single B Cells by Ecobody Technology
Open accessAbstract
Single B cell sampling following to direct gene amplification and transient expression in animal cells has been recognized as powerful monoclonal antibodies (mAbs) screening strategies. Here we report Ecobody technology which allows mAbs screening from single B cells in two days This technology uses Escherichia coli cell-free protein synthesis (CFPS) for mAb expression. In the CFPS step, we employed our original techniques: (1) ‘Zipbody’ as a modified Fab (fragment of antigen binding) format, in which the active Fab formation is facilitated by adhesive leucine zipper peptides fused at the C-termini of the light and heavy chains; and (2) an N-terminal SKIK peptide tag that can markedly increase protein production. By the Ecobody technology, we demonstrated rapid screening of antigen specific mAbs from immunized rabbits and Epstein-Barr Virus infected human B cells. We further obtained rabbit mAbs in E. coli expression system yielding to 8.5 mg of purified proteins from 1 L bacterial culture.
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The Ecobody technology enables efficient and cost-effective production of functional proteins including monoclonal antibodies and related fragments.
“The well-known and innovative Ecobody technology [179] enables an efficient and cost-effective production of functional proteins including monoclonal antibodies and related fragments [76,180,181,182].”
From Evolution of Escherichia coli Expression System in Producing Antibody Recombinant Fragments (2020) · cites this paper as [76]
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- Authors
- Ojima-Kato, T., Morishita, S., Uchida, Y., Nagai, S., Kojima, T., & Nakano, H.
- Affiliations
- iBody Inc., Furo-cho 1, Chikusa-ku, Nagoya 464-0814, Japan
- Nagoya University (JP)
- Venue
- Antibodies
- Publisher
- MDPI AG
- Published
- 2018-11-07
- Volume
- 7
- Issue
- 4
- Pages
- 38
- ISSN
- 2073-4468 (ISSN-L)
- PMC
- PMC6698955
- OpenAlex
- W2900377091
- Cited by
- 23
- References
- 20
- Citations by year
- 2026: 3 · 2025: 2 · 2024: 4 · 2023: 3 · 2022: 2 · 2021: 5 · 2020: 4
- FWCI
- 1.55
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- Antibodies (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Topics
- Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Monoclonal and Polyclonal Antibodies Research
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein purification and stability
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA and protein synthesis mechanisms
- Keywords
- monoclonal antibody production, cell-free protein synthesis, Escherichia coli expression, Fab fragment, rabbit antibodies
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