Cited by 351Monoclonal and Polyclonal Antibodies ResearchToxin Mechanisms and ImmunotoxinsProtein purification and stability

A small bispecific antibody construct expressed as a functional single-chain molecule with high tumor cell cytotoxicity.

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Mack, M, Riethmüller, G, Kufer, P·1995·Proceedings of the National Academy of Sciences

Abstract

Construction of a bispecific single-chain antibody derivative is described that consists of two different single-chain Fv fragments joined through a Gly-Ser linker. One specificity of the two Fv fragments is directed against the CD3 antigen of human T cells and the other is directed against the epithelial 17-1A antigen; the latter had been found in a clinical trial to be a suitable target for antibody therapy of minimal residual colorectal cancer. The construct could be expressed in CHO cells as a fully functional protein, while its periplasmic expression in Escherichia coli resulted in a nonfunctional protein only. The antigen-binding properties of the bispecific single-chain antibody are indistinguishable from those of the corresponding univalent single-chain Fv fragments. By redirecting human peripheral T lymphocytes against 17-1A-positive tumor cells, the bispecific antibody proved to be highly cytotoxic at nanomolar concentrations as demonstrated by 51Cr release assay on various cell lines. The described bispecific construct has a molecular mass of 60 kDa and can be easily purified by its C-terminal histidine tail on a Ni-NTA chromatography column. As bispecific antibodies have already been shown to be effective in vivo in experimental tumor systems as well as in phase-one clinical trials, the small CD3/17-1A-bispecific antibody may be more efficacious than intact antibodies against minimal residual cancer cells.

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  • This new kind of bispecific antibody proved highly cytotoxic at nanomolar concentrations against various cell lines, using unstimulated human PBMCs in the absence of co-signaling.

    “This new kind of bsAb proved to be highly cytotoxic at nanomolar concentrations against various cell lines, using unstimulated human PBMCs in the absence of co-signaling. 44”

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Research works printed but not linked: 6

  1. [9]Staerz, U. D. & Bevan, M. J. (1986) Proc. Natl. Acad. Sci. USA 83, 1453–1457.
  2. [13]Hollinger, P., Prospero, T. & Winter, G. (1993) Proc. Natl. Acad. Sci. USA 90, 6444–6448.
  3. [16]Huston, J. S., Levinson, D., Mudgett-Hunter, M., Tai, M.-S., Novotny, J., Margolies, M. N., Ridge, R. J., Bruccoleri, R. E., Haber, E., Crea, R. & Oppermann, H. (1988) Proc. Natl. Acad. Sci. USA 85, 5879–5883.
  4. [18]Orlandi, R., Güssow, D. H., Jones, P. T. & Winter, G. (1989) Proc. Natl. Acad. Sci. USA 86, 3833–3837.
  5. [25]Szala, S., Froehlich, M., Scollon, M., Kasai, Y., Steplewski, Z., Koprowsky, H. & Linnebach, A. J. (1990) Proc. Natl. Acad. Sci. USA 87, 3542–3564.
  6. [30]Brinkmann, U., Reiter, Y., Jung, S., Lee, B. & Pastan, I. (1993) Proc. Natl. Acad. Sci. USA 90, 7538–7542.

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Authors
Mack, M., Riethmüller, G., & Kufer, P.
Affiliations
Institut für Immunologie (DE)
ORCID
Mack, M
Venue
Proceedings of the National Academy of Sciences
Published
1995-07-18
Volume
92
Issue
15
Pages
7021-7025
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2086146164
Cited by
351
References
39
Citations by year
2026: 8 · 2025: 11 · 2024: 15 · 2023: 7 · 2022: 10 · 2021: 20 · 2020: 12 · 2019: 22 · 2018: 19 · 2017: 20 · 2016: 12 · 2015: 22 · 2014: 16 · 2013: 13 · 2012: 14
FWCI
12.32
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Monoclonal and Polyclonal Antibodies Research
  • Life Sciences › Immunology and Microbiology › Immunology › Toxin Mechanisms and Immunotoxins
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein purification and stability
Keywords
bispecific antibodies, single-chain antibody, single-chain Fv fragments, CD3 antigen, colorectal cancer, minimal residual disease, tumor cell killing, CHO cell expression, Ni-NTA affinity purification, antibody therapy
MeSH terms
Amino Acid Sequence, Antibody Specificity, Antineoplastic Agents, Base Sequence, Cloning, Molecular, Escherichia coli, Immunoglobulin Fragments, Immunoglobulin Variable Region, Molecular Sequence Data, Recombinant Proteins, Tumor Cells, Cultured, Blotting, Western

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