CD4+ T Cells Regulate Pulmonary Metastasis of Mammary Carcinomas by Enhancing Protumor Properties of Macrophages

David G. DeNardo, Jairo B. Barreto, Pauline Andreu, Lesley Vasquez, David Tawfik, Nikita Kolhatkar, Lisa M. Coussens

Research output: Contribution to journalArticle

772 Scopus citations

Abstract

During breast cancer development, increased presence of leukocytes in neoplastic stroma parallels disease progression; however, the functional significance of leukocytes in regulating protumor versus antitumor immunity in the breast remains poorly understood. Utilizing the MMTV-PyMT model of mammary carcinogenesis, we demonstrate that IL-4-expressing CD4+ T lymphocytes indirectly promote invasion and subsequent metastasis of mammary adenocarcinomas by directly regulating the phenotype and effector function of tumor-associated CD11b+Gr1-F4/80+ macrophages that in turn enhance metastasis through activation of epidermal growth factor receptor signaling in malignant mammary epithelial cells. Together, these data indicate that antitumor acquired immune programs can be usurped in protumor microenvironments and instead promote malignancy by engaging cellular components of the innate immune system functionally involved in regulating epithelial cell behavior.

Original languageEnglish
Pages (from-to)91-102
Number of pages12
JournalCancer Cell
Volume16
Issue number2
DOIs
StatePublished - Aug 4 2009
Externally publishedYes

Keywords

  • CELLCYCLE
  • CELLIMMUNO

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