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Tumor-associated neutrophils stimulate T cell responses in early-stage human lung cancer
Evgeniy B. Eruslanov, … , Steven M. Albelda, Sunil Singhal
Evgeniy B. Eruslanov, … , Steven M. Albelda, Sunil Singhal
Published November 10, 2014
Citation Information: J Clin Invest. 2014;124(12):5466-5480. https://doi.org/10.1172/JCI77053.
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Research Article Oncology Article has an altmetric score of 34

Tumor-associated neutrophils stimulate T cell responses in early-stage human lung cancer

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Abstract

Infiltrating inflammatory cells are highly prevalent within the tumor microenvironment and mediate many processes associated with tumor progression; however, the contribution of specific populations remains unclear. For example, the nature and function of tumor-associated neutrophils (TANs) in the cancer microenvironment is largely unknown. The goal of this study was to provide a phenotypic and functional characterization of TANs in surgically resected lung cancer patients. We found that TANs constituted 5%–25% of cells isolated from the digested human lung tumors. Compared with blood neutrophils, TANs displayed an activated phenotype (CD62LloCD54hi) with a distinct repertoire of chemokine receptors that included CCR5, CCR7, CXCR3, and CXCR4. TANs produced substantial quantities of the proinflammatory factors MCP-1, IL-8, MIP-1α, and IL-6, as well as the antiinflammatory IL-1R antagonist. Functionally, both TANs and neutrophils isolated from distant nonmalignant lung tissue were able to stimulate T cell proliferation and IFN-γ release. Cross-talk between TANs and activated T cells led to substantial upregulation of CD54, CD86, OX40L, and 4-1BBL costimulatory molecules on the neutrophil surface, which bolstered T cell proliferation in a positive-feedback loop. Together our results demonstrate that in the earliest stages of lung cancer, TANs are not immunosuppressive, but rather stimulate T cell responses.

Authors

Evgeniy B. Eruslanov, Pratik S. Bhojnagarwala, Jon G. Quatromoni, Tom Li Stephen, Anjana Ranganathan, Charuhas Deshpande, Tatiana Akimova, Anil Vachani, Leslie Litzky, Wayne W. Hancock, José R. Conejo-Garcia, Michael Feldman, Steven M. Albelda, Sunil Singhal

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