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Published in: Cancer and Metastasis Reviews 4/2010

01-12-2010 | NON-THEMATIC REVIEW

Regulatory T cells and breast cancer: implications for immunopathogenesis

Authors: Maria Angelica Ehara Watanabe, Julie Massayo Maeda Oda, Marla Karine Amarante, Julio Cesar Voltarelli

Published in: Cancer and Metastasis Reviews | Issue 4/2010

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Abstract

Current understanding of the role of several cancer risk factors is more comprehensive, as reported for a number of sites, including the brain, colon, breasts, and ovaries. Despite such advances, the incidence of breast cancer continues to increase worldwide. Signals from the microenviroment have a profound influence on the maintenance or progression cancers. Although T cells present the most important immunological response in tumor growth in the early stages of cancer, they become suppressive CD4+ and CD8+ regulatory T cells (Tregs) after chronic stimulation and interactions with tumor cells, thus promoting rather than inhibiting cancer development and progression. Tregs have an important marker protein which is FoxP3, though it does not necessarily confer a Treg phenotype when expressed in CD4+ T lymphocytes. High Treg levels have been reported in peripheral blood, lymph nodes, and tumor specimens from patients with different types of cancer. The precise mechanisms by which Tregs suppress immune cell functions remain unclear, and there are reports of both direct inhibition through cell–cell contact and indirect inhibition through the secretion of anti-inflammatory mediators such as interleukin. In this review, we present the molecular and immunological aspects of Treg cells in the metastasis of breast cancer.
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Metadata
Title
Regulatory T cells and breast cancer: implications for immunopathogenesis
Authors
Maria Angelica Ehara Watanabe
Julie Massayo Maeda Oda
Marla Karine Amarante
Julio Cesar Voltarelli
Publication date
01-12-2010
Publisher
Springer US
Published in
Cancer and Metastasis Reviews / Issue 4/2010
Print ISSN: 0167-7659
Electronic ISSN: 1573-7233
DOI
https://doi.org/10.1007/s10555-010-9247-y

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