Cited by 62Immunotherapy and Immune ResponsesMonoclonal and Polyclonal Antibodies ResearchT-cell and B-cell Immunology

A recombinant bispecific single‐chain antibody induces targeted, supra‐agonistic CD28‐stimulation and tumor cell killing

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Grosse‐Hovest, Ludger, Hartlapp, Ingo, Marwan, Wolfgang, Brem, Gottfried, Rammensee, Hans‐Georg, Jung, Gundram·2003·European Journal of Immunology

Abstract

Endowing tumor cells with costimulatory signals for T cell activation has emerged as a promising strategy for tumor immunotherapy. Costimulatory molecules were either transfected into tumor cells to generate vaccines or were fused, e.g. to antibodies against tumor‐associated antigens, to achieve targeted T cell costimulation in vivo. Here we report the production and purification of rM28, a recombinant bispecific single‐chain antibody directed to a melanoma‐associated proteoglycan and to the costimulatory CD28 molecule on human T cells. We found that a dimer of the recombinant molecule, bound to tumor target cells, induced pronounced T cell activation in peripheral blood mononuclear cell preparations without additional TCR/CD3 stimulation being required. Thelytic activity generated after 3 days of stimulation effectively prevented tumor cell growth. However, it was unspecific and predominantly mediated by non T cells. Our findings demonstrate that presentation of a CD28 antibody within a suitable recombinant, bispecific format may result in a "targeted supra‐agonistic stimulation" of the CD28 molecule, which leads to effective tumor cell killing after induction of unspecifically lytic cells.

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  • rM28 spontaneously forms stable dimers and can induce T-cell activation and effective tumor-cell killing in vitro and in vivo without a signal through the TCR/CD3 complex.

    “This molecule spontaneously forms stable dimers, and was shown to be capable of inducing T-cell activation and effective tumor-cell killing in vitro and in vivo without a signal through the TCR/CD3 complex, a so called”

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Authors
Grosse‐Hovest, L., Hartlapp, I., Marwan, W., Brem, G., Rammensee, H., & Jung, G.
Affiliations
  • University of Tübingen (DE)
  • Max Planck Society (DE)
  • University of Veterinary Medicine Vienna (AT)
Corresponding author
Jung, Gundram
Venue
European Journal of Immunology
Publisher
Wiley
Published
2003-04-22
Volume
33
Issue
5
Pages
1334-1340
ISSN
  • 0014-2980 (ISSN-L)
  • 1521-4141
OpenAlex
W1973284926
Cited by
62
References
31
Citations by year
2026: 1 · 2025: 1 · 2022: 2 · 2021: 5 · 2019: 2 · 2018: 3 · 2017: 1 · 2016: 2 · 2015: 7 · 2014: 2 · 2013: 7 · 2012: 5
FWCI
0.65
Type
journal article
Language
en
Open access
Locations
  • European Journal of Immunology (publishedVersion)
  • PubMed (publishedVersion)
  • Max Planck Institute for Plasma Physics (submittedVersion)
Funders
Deutsche Forschungsgemeinschaft
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › Immunotherapy and Immune Responses
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Monoclonal and Polyclonal Antibodies Research
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
Keywords
bispecific single-chain antibody, CD28, T cell costimulation, cancer immunotherapy, T cell activation, tumor cell killing, recombinant antibodies, tumor antigens
MeSH terms
Cytotoxicity, Immunologic, Humans, Lymphocyte Activation, Melanoma, Proteoglycans, Recombinant Proteins, T-Lymphocytes, Tumor Cells, Cultured, Antibodies, Bispecific, CD28 Antigens

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