Distinct follicular T cell subsets regulate lymphoma progression and outcomes
Yoshiaki Abe1, Junko Zenkoh2, Akinori Kanai2
1Department of Hematology, Institute of Medicine, University of Tsukuba, Tsukuba, Japan; Department of Hematology, University of Tsukuba Hospital, Tsukuba, Japan.
Cancer Cell
|July 4, 2025
Summary
Researchers discovered new types of T cells in follicular lymphoma (FL) that fight tumors and predict patient outcomes. These findings offer novel insights into lymphoma immunity and patient management.
Area of Science:
- Immunology
- Oncology
- Genomics
Background:
- Follicular lymphoma (FL) involves neoplastic B cells and T cell immunity.
- The role of follicular T cells beyond T follicular helper (TFH) cells in FL is not well understood.
Purpose of the Study:
- To investigate the heterogeneity and function of follicular T cells in FL.
- To identify novel T cell subsets and their clinical relevance in FL.
Main Methods:
- Multi-omics analyses including single-cell mapping and transcriptomics.
- Spatially resolved single-cell transcriptomics and multiplex protein profiling.
- Functional characterization and replication under specific cytokine conditions.
Main Results:
- Identification of transcriptionally and spatially distinct non-TFH follicular T cell subsets expanding in FL.
- These subsets display enhanced anti-tumorigenic properties and form unique spatial niches.
- A distinct self-regulatory ecosystem involving interleukin-21 generates these subsets.
- These subsets significantly stratify FL prognoses, independent of current markers.
Conclusions:
- Unrecognized follicular T cell subsets play a crucial role in FL immunity.
- These subsets possess anti-tumorigenic functions and prognostic value.
- Understanding these cellular ecosystems may improve FL patient management and therapeutic strategies.
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