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Cited by 392

The DOI matches its Crossref record; 5 of the 5 references it cites were found in a registry or an index.

PD-1 Inhibits Antiviral Immunity at the Effector Phase in the Liver

Open access
Iwai, Yoshiko, Terawaki, Seigo, Ikegawa, Masaya, Okazaki, Taku, Honjo, Tasuku·2003·The Journal of Experimental Medicine

Abstract

Unlike naive T cells, effector T cells can be activated by either T cell receptor signal or costimulatory signal alone and therefore the absence of costimulatory molecules on tissue cells cannot explain the tolerance mechanism at the effector phase. Here we report that PD-L1, the ligand for the immunoinhibitory receptor PD-1, was expressed on vascular endothelium in peripheral tissues. Liver nonparenchymal cells including sinusoidal endothelial cells and Kupffer cells constitutively expressed PD-L1 and inhibited proliferation and cell division of activated T cells expressing PD-1. The absence of PD-1 induced proliferation of effector T cells in the adenovirus-infected liver and resulted in rapid clearance of the virus. These results indicate that PD-1 plays an important role in T cell tolerance at the effector phase and the blockade of the PD-1 pathway can augment antiviral immunity.

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Metadata

Authors
Iwai, Y., Terawaki, S., Ikegawa, M., Okazaki, T., & Honjo, T.
Venue
The Journal of Experimental Medicine
Published
2003-07-07
Volume
198
Issue
1
Pages
39-50
ISSN
  • 0022-1007 (ISSN-L)
  • 1540-9538
OpenAlex
W2121596012
Cited by
392
References
5
FWCI
5.51
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: PD-1 Inhibits Antiviral Immunity at the Effector Phase in the Liver. https://app.cochat.ai/papers/10.1084/jem.20022235
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Iwai, Y., Terawaki, S., Ikegawa, M., Okazaki, T., & Honjo, T. (2003). PD-1 Inhibits Antiviral Immunity at the Effector Phase in the Liver. The Journal of Experimental Medicine. https://doi.org/10.1084/jem.20022235

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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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