Journal
CELL REPORTS
Volume 26, Issue 8, Pages 2178-+Publisher
CELL PRESS
DOI: 10.1016/j.celrep.2019.01.085
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Funding
- NIH [P50 CA97274]
- Leukemia & Lymphoma Society [6544-18-01]
- Predolin Foundation [91314099]
- Landow Foundation [91314990]
- Jaime Erin Follicular Lymphoma Research Consortium [91314125]
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Follicular lymphoma (FL) is an indolent B cell malignancy characterized by an extensive but poorly functional T cell infiltrate in the tumor microenvironment. Using mass cytometry, we identified at least 12 subsets of intratumoral CD4(+) T cells, 3 of which were unique to FL biopsies versus control tissues. Of these subsets, the frequency of naive T cells correlated with improved patient survival. Although total PD-1(+) T cell numbers were not associated with patient outcome, specific PD-1(+) T cell subpopulations were associated with poor survival. Intratumoral T cells lacking CD27 and CD28 co-stimulatory receptor expression were enriched in FL and correlated with inferior patient outcomes. In vitro models revealed that CD70(+) lymphoma cells played an important role in expanding this population. Taken together, our mass cytometry results identified CD4(+) memory T cell populations that are poorly functional due to loss of co-stimulatory receptor expression and are associated with an inferior survival in FL.
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