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Cited by 435

The DOI matches its Crossref record; 12 of the 12 references it cites were found in a registry or an index.

Different responses are elicited in cytotoxic T lymphocytes by different levels of T cell receptor occupancy.

Open access
Valitutti, S, Müller, S, Dessing, M, Lanzavecchia, A·1996·The Journal of experimental medicine

Abstract

We have investigated the level of TCR occupancy required to elicit different biological responses in human CTL clones specific for an influenza matrix peptide. Specific cytotoxicity could be detected at extremely low peptide concentrations (10(-12) to 10(-15) M). However, IFN-gamma production, responsiveness to IL-2 and Ca++ fluxes were observed only at peptide concentrations > 10(-9) M, while autonomous proliferation required even higher peptide concentrations. In parallel experiments we measured TCR downregulation to estimate the number of TCRs triggered. We observed that at low peptide concentrations, where only cytotoxicity is triggered, TCR downregulation was hardly detectable. Conversely, induction of IFN-gamma production and proliferation required triggering of at least 20-50% of TCRs. Taken together these results indicate that a single CTL can graduate different biological responses as a function of antigen concentration and that killing of the specific target does not necessarily result in full activation.

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Metadata

Authors
Valitutti, S., Müller, S., Dessing, M., & Lanzavecchia, A.
Venue
The Journal of experimental medicine
Published
1996-04-01
Volume
183
Issue
4
Pages
1917-1921
ISSN
  • 0022-1007 (ISSN-L)
  • 1540-9538
OpenAlex
W2132156332
Cited by
435
References
12
FWCI
11.81
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Different responses are elicited in cytotoxic T lymphocytes by different levels of T cell receptor occupancy. https://app.cochat.ai/papers/10.1084/jem.183.4.1917
The paper
Valitutti, S., Müller, S., Dessing, M., & Lanzavecchia, A. (1996). Different responses are elicited in cytotoxic T lymphocytes by different levels of T cell receptor occupancy. The Journal of experimental medicine. https://doi.org/10.1084/jem.183.4.1917

Data sources

Bibliographic data: Semantic Scholar, OpenAlex, Crossref.

Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.