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Cited by 371

The DOI matches its Crossref record; 40 of the 40 references it cites were found in a registry or an index.

Antigen-presenting dendritic cells provide the reducing extracellular microenvironment required for T lymphocyte activation

Open access
Angelini, Giovanna, Gardella, Stefania, Ardy, Massimo, Ciriolo, Maria Rosa, Filomeni, Giuseppe, Di Trapani, Giovanna, Clarke, Frank, Sitia, Roberto, Rubartelli, Anna·2002·Proceedings of the National Academy of Sciences

Abstract

T lymphocytes are defective in cystine uptake and thus require exogenous thiols for activation and function. Here we show that monocyte-derived human dendritic cells (DCs) release cysteine in the extracellular space. Cysteine generation is increased by lipopolysaccharide and tumor necrosis factor α, and by contact with T cells specifically recognizing soluble or alloantigens. These stimuli also induce thioredoxin (TRX) accumulation in DCs. However, only the contact with antigen-specific T cells triggers TRX secretion by the antigen-presenting cells. Fewer extracellular thiols are recovered after DC–T cell interactions when cystine uptake or TRX activity are inhibited. In addition, glutamate (Glu) and anti-TRX-inactivating antibodies inhibit antigen-dependent T lymphocyte proliferation. These findings indicate that, during antigen presentation, DCs uptake cystine and release cysteine and TRX, thus providing a reducing microenvironment that facilitates immune response.

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Metadata

Authors
Angelini, G., Gardella, S., Ardy, M., Ciriolo, M. R., Filomeni, G., Di Trapani, G., Clarke, F., Sitia, R., & Rubartelli, A.
Venue
Proceedings of the National Academy of Sciences
Published
2002-01-15
Volume
99
Issue
3
Pages
1491-1496
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2104527627
Cited by
371
References
40
FWCI
4.97
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Antigen-presenting dendritic cells provide the reducing extracellular microenvironment required for T lymphocyte activation. https://app.cochat.ai/papers/10.1073/pnas.022630299
The paper
Angelini, G., Gardella, S., Ardy, M., Ciriolo, M. R., Filomeni, G., Di Trapani, G., Clarke, F., Sitia, R., & Rubartelli, A. (2002). Antigen-presenting dendritic cells provide the reducing extracellular microenvironment required for T lymphocyte activation. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.022630299

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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.