Cited by 100T-cell and B-cell ImmunologyMonoclonal and Polyclonal Antibodies ResearchPsoriasis: Treatment and Pathogenesis

In vivo application of mAb directed against the γδ TCR does not deplete but generates “invisible” γδ T cells

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Koenecke, Christian, Chennupati, Vijaykumar, Schmitz, Susanne, Malissen, Bernard, Förster, Reinhold, Prinz, Immo·2009·European Journal of Immunology

Abstract

mAb targeting the γδ TCR have been used for γδ T‐cell depletion with varying success. Although the depletion‐capacity of the anti‐γδ TCR mAb clone GL3 has been disputed repeatedly, many groups continue to use γδ T‐cell depletion protocols involving the mAb clone UC7‐13D5 and find significant biological effects. We show here that treatment with both GL3 and UC7‐13D5 antibodies does not deplete γδ T cells in vivo, but rather leads to TCR internalization and thereby generates “invisible” γδ T cells. We addressed this issue using anti‐γδ TCR mAb injections into WT mice as well as into reporter TCR delta locus‐histone 2B enhanced GFP knock‐in mice, in which γδ T cells can be detected based on an intrinsic green fluorescence. Importantly, the use of TCR delta locus‐histone 2B enhanced GFP mice provided here for the first time direct evidence that the “depleted” γδ T cells were actually still present. Our results show further that GL3 and UC7‐13D5 mAb are in part cross‐competing for the same epitope. Assessed by activation markers, we observed in vitro and in vivo activation of γδ T cells through mAb. We conclude that γδ T‐cell depletion experiments must be evaluated with caution and discuss the implications for future studies on the physiological functions of γδ T cells.

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Authors
Koenecke, C., Chennupati, V., Schmitz, S., Malissen, B., Förster, R., & Prinz, I.
Affiliations
  • Medizinische Hochschule Hannover (DE)
  • Centre National de la Recherche Scientifique (FR)
Corresponding author
Prinz, Immo
Venue
European Journal of Immunology
Publisher
Wiley
Published
2009-01-29
Volume
39
Issue
2
Pages
372-379
ISSN
  • 0014-2980 (ISSN-L)
  • 1521-4141
OpenAlex
W2096637604
Cited by
100
References
25
Citations by year
2026: 5 · 2025: 4 · 2024: 9 · 2023: 5 · 2022: 7 · 2021: 6 · 2020: 11 · 2019: 4 · 2018: 8 · 2017: 5 · 2016: 4 · 2015: 5 · 2014: 6 · 2013: 2 · 2012: 4
FWCI
2.73
Type
journal article
Language
en
Open access
Locations
  • European Journal of Immunology (publishedVersion)
  • PubMed (publishedVersion)
  • HAL AMU (submittedVersion)
Funders
Deutsche Forschungsgemeinschaft
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Monoclonal and Polyclonal Antibodies Research
  • Life Sciences › Immunology and Microbiology › Immunology › Psoriasis: Treatment and Pathogenesis
Keywords
γδ T cells, T cell depletion, epitope cross-reactivity, T cell activation
MeSH terms
Animals, Antibodies, Monoclonal, Lymphocyte Depletion, Lymphocyte Activation, Mice, Inbred C57BL, Mice, Transgenic, T-Lymphocytes, Receptors, Antigen, T-Cell, gamma-delta, Green Fluorescent Proteins, Mice, Gene Knock-In Techniques

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