Article ; Online: Anti-PD-1 therapy triggers Tfh cell-dependent IL-4 release to boost CD8 T cell responses in tumor-draining lymph nodes.
The Journal of experimental medicine
2024 Volume 221, Issue 4
Abstract: Anti-PD-1 therapy targets intratumoral CD8+ T cells to promote clinical responses in cancer patients. Recent evidence suggests an additional activity in the periphery, but the underlying mechanism is unclear. Here, we show that anti-PD-1 mAb enhances CD8+ ...
Abstract | Anti-PD-1 therapy targets intratumoral CD8+ T cells to promote clinical responses in cancer patients. Recent evidence suggests an additional activity in the periphery, but the underlying mechanism is unclear. Here, we show that anti-PD-1 mAb enhances CD8+ T cell responses in tumor-draining lymph nodes by stimulating cytokine production in follicular helper T cells (Tfh). In two different models, anti-PD-1 mAb increased the activation and proliferation of tumor-specific T cells in lymph nodes. Surprisingly, anti-PD-1 mAb did not primarily target CD8+ T cells but instead stimulated IL-4 production by Tfh cells, the major population bound by anti-PD-1 mAb. Blocking IL-4 or inhibiting the Tfh master transcription factor BCL6 abrogated anti-PD-1 mAb activity in lymph nodes while injection of IL-4 complexes was sufficient to recapitulate anti-PD-1 mAb activity. A similar mechanism was observed in a vaccine model. Finally, nivolumab also boosted human Tfh cells in humanized mice. We propose that Tfh cells and IL-4 play a key role in the peripheral activity of anti-PD-1 mAb. |
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MeSH term(s) | Humans ; Mice ; Animals ; T Follicular Helper Cells ; T-Lymphocytes, Helper-Inducer ; Interleukin-4/metabolism ; Lymph Nodes ; Neoplasms/pathology ; CD8-Positive T-Lymphocytes |
Chemical Substances | Interleukin-4 (207137-56-2) |
Language | English |
Publishing date | 2024-02-28 |
Publishing country | United States |
Document type | Journal Article |
ZDB-ID | 218343-2 |
ISSN | 1540-9538 ; 0022-1007 |
ISSN (online) | 1540-9538 |
ISSN | 0022-1007 |
DOI | 10.1084/jem.20232104 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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