American Association for Cancer Research
Browse

Supplementary Figures 1-7 from A Population of Tumor-Infiltrating CD4+ T Cells Co-Expressing CD38 and CD39 Is Associated with Checkpoint Inhibitor Resistance

Download (3.3 MB)
journal contribution
posted on 2023-10-13, 07:40 authored by Ankita Mitra, Brian Thompson, Ann Strange, Carol M. Amato, Melinda Vassallo, Igor Dolgalev, Jonathan Hester-McCullough, Tomoaki Muramatsu, Diana Kimono, Amrutesh S. Puranik, Jeffrey S. Weber, David Woods

Supplementary Figures 1 - 7

Funding

National Cancer Institute (NCI)

United States Department of Health and Human Services

Find out more...

History

ARTICLE ABSTRACT

We previously showed that elevated frequencies of peripheral blood CD3+CD4+CD127−GARP−CD38+CD39+ T cells were associated with checkpoint immunotherapy resistance in patients with metastatic melanoma. In the present study, we sought to further investigate this population of ectoenzyme-expressing T cells (Teee). Teee derived from the peripheral blood of patients with metastatic melanoma were evaluated by bulk RNA-sequencing (RNA-seq) and flow cytometry. The presence of Teee in the tumor microenvironment was assessed using publically available single-cell RNA-seq datasets of melanoma, lung, and bladder cancers along with multispectral immunofluorescent imaging of melanoma patient formalin-fixed, paraffin-embedded specimens. Suppressive function of Teee was determined by an in vitro autologous suppression assay. Teee had phenotypes associated with proliferation, apoptosis, exhaustion, and high expression of inhibitory molecules. Cells with a Teee gene signature were present in tumors of patients with melanoma, lung, and bladder cancers. CD4+ T cells co-expressing CD38 and CD39 in the tumor microenvironment were preferentially associated with Ki67− CD8+ T cells. Co-culture of patient Teee with autologous T cells resulted in decreased proliferation of target T cells. High baseline intratumoral frequencies of Teee were associated with checkpoint immunotherapy resistance and poor overall survival in patients with metastatic melanoma. These results demonstrate that a novel population of CD4+ T cells co-expressing CD38 and CD39 is found both in the peripheral blood and tumor of patients with melanoma and is associated with checkpoint immunotherapy resistance.

Usage metrics

    Clinical Cancer Research

    Categories

    Keywords

    Licence

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC