Prune-1 drives polarization of tumor-associated macrophages (TAMs) within the lung metastatic niche in triple-negative breast cancer

Veronica Ferrucci, Fatemeh Asadzadeh, Francesca Collina, Roberto Siciliano, Angelo Boccia, Laura Marrone, Daniela Spano, Marianeve Carotenuto, Cristina Maria Chiarolla, Daniela De Martino, Gennaro De Vita, Alessandra Macrì, Luisa Dassi, Jonathan Vandenbussche, Natascia Marino, Monica Cantile, Giovanni Paolella, Francesco D'Andrea, Maurizio di Bonito, Kris GevaertMassimo Zollo

Research output: Contribution to journalArticlepeer-review

Abstract

M2-tumor-associated macrophages (M2-TAMs) in the tumor microenvironment represent a prognostic indicator for poor outcome in triple-negative breast cancer (TNBC). Here we show that Prune-1 overexpression in human TNBC patients has positive correlation to lung metastasis and infiltrating M2-TAMs. Thus, we demonstrate that Prune-1 promotes lung metastasis in a genetically engineered mouse model of metastatic TNBC augmenting M2-polarization of TAMs within the tumor microenvironment. Thus, this occurs through TGF-β enhancement, IL-17F secretion, and extracellular vesicle protein content modulation. We also find murine inactivating gene variants in human TNBC patient cohorts that are involved in activation of the innate immune response, cell adhesion, apoptotic pathways, and DNA repair. Altogether, we indicate that the overexpression of Prune-1, IL-10, COL4A1, ILR1, and PDGFB, together with inactivating mutations of PDE9A, CD244, Sirpb1b, SV140, Iqca1, and PIP5K1B genes, might represent a route of metastatic lung dissemination that need future prognostic validations.

Original languageEnglish
Article number101938
JournaliScience
Volume24
Issue number1
DOIs
Publication statusPublished - Jan 22 2021

Keywords

  • Cancer
  • Immunology
  • Molecular Biology

ASJC Scopus subject areas

  • General

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