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Cited by 174

The DOI matches its Crossref record; 4 of the 4 references it cites were found in a registry or an index.

Single dose of anti–CTLA-4 enhances CD8 + T-cell memory formation, function, and maintenance

Open access
Pedicord, Virginia A., Montalvo, Welby, Leiner, Ingrid M., Allison, James P.·2011·Proceedings of the National Academy of Sciences

Abstract

CTLA-4, an Ig superfamily molecule with homology to CD28, is one of the most potent negative regulators of T-cell responses. In vivo blockade of CTLA-4 exacerbates autoimmunity, enhances tumor-specific T-cell responses, and may inhibit the induction of T-cell anergy. Clinical trials of CTLA-4–blocking antibodies to augment T-cell responses to malignant melanoma are at an advanced stage; however, little is known about the effects of CTLA-4 blockade on memory CD8 + T-cell responses and the formation and maintenance of long-term CD8 + T-cell memory. In our studies, we show that during in vivo memory CD8 + T-cell responses to Listeria monocytogenes infection, CTLA-4 blockade enhances bacterial clearance and increases memory CD8 + T-cell expansion. This is followed by an accumulation of memory cells that are capable of producing the effector cytokines IFN-γ and TNF-α. We also demonstrate that in a vaccination setting, blocking CTLA-4 during CD8 + T-cell priming leads to increased expansion and maintenance of antigen-specific memory CD8 + T cells without adversely affecting the overall T-cell repertoire. This leads to an increase in memory cell effector function and improved protective immunity against further bacterial challenges. These results indicate that transient blockade of CTLA-4 enhances memory CD8 + T-cell responses and support the possible use of CTLA-4–blocking antibodies during vaccination to augment memory formation and maintenance.

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Metadata

Authors
Pedicord, V. A., Montalvo, W., Leiner, I. M., & Allison, J. P.
Venue
Proceedings of the National Academy of Sciences
Published
2010-12-20
Volume
108
Issue
1
Pages
266-271
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W1967889234
Cited by
174
References
4
FWCI
4.33
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Single dose of anti–CTLA-4 enhances CD8 + T-cell memory formation, function, and maintenance. https://app.cochat.ai/papers/10.1073/pnas.1016791108
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Pedicord, V. A., Montalvo, W., Leiner, I. M., & Allison, J. P. (2011). Single dose of anti–CTLA-4 enhances CD8 + T-cell memory formation, function, and maintenance. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.1016791108

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