Early T Cell Signalling Changes in Tumor-Infiltrating Lymphocytes
Author Information
Author(s): Wang Shu-Fang, Fouquet Stéphane, Chapon Maxime, Salmon Hélène, Regnier Fabienne, Labroquère Karine, Badoual Cécile, Damotte Diane, Validire Pierre, Maubec Eve, Delongchamps Nicolas B., Cazes Aurélie, Gibault Laure, Garcette Marylène, Dieu-Nosjean Marie-Caroline, Zerbib Marc, Avril Marie-Françoise, Prévost-Blondel Armelle, Randriamampita Clotilde, Trautmann Alain, Bercovici Nadège
Primary Institution: Inserm, U1016, Institut Cochin, Paris, France
Hypothesis
The study investigates how early T cell receptor (TCR) signaling is altered in tumor-infiltrating lymphocytes (TIL) and the role of PD-1 in this process.
Conclusion
The study found that TIL exhibit significant alterations in early TCR signaling pathways, which can be partially reversed after tumor dissociation.
Supporting Evidence
- TIL showed a significant reduction in calcium response compared to peripheral blood T cells.
- Phosphorylation of Akt was severely affected in TIL, showing a 15-fold reduction compared to peripheral blood T cells.
- PD-1 was frequently expressed on TIL, indicating a chronic activation state.
- Recovery of TIL function was observed within hours after tumor dissociation.
Takeaway
T cells that are found in tumors don't work as well as they should because of changes in how they signal, but they can get better if the tumor environment is changed.
Methodology
The study analyzed the functional state of TIL from three types of tumors immediately after resection, focusing on calcium, Akt, and ERK signaling pathways.
Potential Biases
Potential bias in patient selection and tumor types analyzed.
Limitations
The study primarily focuses on TIL from specific tumor types and may not generalize to all cancers.
Participant Demographics
Patients with non-small cell lung carcinoma (NSCLC), melanoma, and renal cell carcinoma (RCC).
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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