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 accessAbstract
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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Cites
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Beyond oxidative stress: an immunologist's guide to reactive oxygen species
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Predicting Network Activity from High Throughput Metabolomics
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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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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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