Neutrophils in the tumor microenvironment

DR Powell, A Huttenlocher - Trends in immunology, 2016 - cell.com
DR Powell, A Huttenlocher
Trends in immunology, 2016cell.com
Neutrophils are the first responders to sites of acute tissue damage and infection. Recent
studies suggest that in addition to neutrophil apoptosis, resolution of neutrophil inflammation
at wounds can be mediated by reverse migration from tissues and transmigration back into
the vasculature. In settings of chronic inflammation, neutrophils persist in tissues, and this
persistence has been associated with cancer progression. However, the role of neutrophils
in the tumor microenvironment remains controversial, with evidence for both pro-and anti …
Neutrophils are the first responders to sites of acute tissue damage and infection. Recent studies suggest that in addition to neutrophil apoptosis, resolution of neutrophil inflammation at wounds can be mediated by reverse migration from tissues and transmigration back into the vasculature. In settings of chronic inflammation, neutrophils persist in tissues, and this persistence has been associated with cancer progression. However, the role of neutrophils in the tumor microenvironment remains controversial, with evidence for both pro- and anti-tumor roles. Here we review the mechanisms that regulate neutrophil recruitment and resolution at sites of tissue damage, with a specific focus on the tumor microenvironment. We discuss the current understanding as to how neutrophils alter the tumor microenvironment to support or hinder cancer progression, and in this context outline gaps in understanding and important areas of inquiry.
cell.com