Journal
NATURE REVIEWS CANCER
Volume 20, Issue 10, Pages 594-607Publisher
NATURE PORTFOLIO
DOI: 10.1038/s41568-020-0283-9
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Funding
- US-Israel Bi-national Science Foundation [2011244]
- Israel Science Foundation [886/15]
- Israel Cancer Research Foundation
- Cancer Biology Research Center, Tel Aviv University
- Emerson Collective
- Division of Intramural Research, National Institute of Allergy and Infectious Diseases (NIAID), NIH
- NATIONAL INSTITUTE OF ALLERGY AND INFECTIOUS DISEASES [ZIAAI001130] Funding Source: NIH RePORTER
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This Review outlines how eosinophils influence the tumour microenvironment and examines the diverse pro-tumorigenic and antitumorigenic functions of these cells. It also discusses the use of eosinophils as predictive biomarkers and effector cells in immunotherapy. Eosinophils are evolutionarily conserved, pleotropic cells that display key effector functions in allergic diseases, such as asthma. Nonetheless, eosinophils infiltrate multiple tumours and are equipped to regulate tumour progression either directly by interacting with tumour cells or indirectly by shaping the tumour microenvironment (TME). Eosinophils can readily respond to diverse stimuli and are capable of synthesizing and secreting a large range of molecules, including unique granule proteins that can potentially kill tumour cells. Alternatively, they can secrete pro-angiogenic and matrix-remodelling soluble mediators that could promote tumour growth. Herein, we aim to comprehensively outline basic eosinophil biology that is directly related to their activity in the TME. We discuss the mechanisms of eosinophil homing to the TME and examine their diverse pro-tumorigenic and antitumorigenic functions. Finally, we present emerging data regarding eosinophils as predictive biomarkers and effector cells in immunotherapy, especially in response to immune checkpoint blockade therapy, and highlight outstanding questions for future basic and clinical cancer research.
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