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NK Cells in the Tumor Microenvironment

Overview
Journal Crit Rev Oncog
Publisher Begell House
Specialty Oncology
Date 2014 Jun 19
PMID 24941376
Citations 71
Authors
Affiliations
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Abstract

The presence of natural killer (NK) cells in the tumor microenvironment correlates with outcome in a variety of cancers. However, the role of intratumoral NK cells is unclear. Preclinical studies have shown that, while NK cells efficiently kill circulating tumor cells of almost any origin, they seem to have very little effect against the same type of tumor cells when these have extravasated. The ability to kill extravasated tumor cells is, however, is dependent of the level of activation of the NK cells, as more recent published and unpublished studies, discussed below, have demonstrated that interleukin-2-activated NK cells are able to attack well-established solid tumors.

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