Tissue-resident FOLR2+ macrophages associate with CD8+ T cell infiltration in human breast cancer.

Macrophage infiltration is a hallmark of solid cancers, and overall macrophage infiltration correlates with lower patient survival and resistance to therapy. Tumor-associated macrophages, however, are phenotypically and functionally heterogeneous. Specific subsets of tumor-associated macrophage might be endowed with distinct roles on cancer progression and antitumor immunity. Here, we identify a discrete population of FOLR2+ tissue-resident macrophages in healthy mammary gland and breast cancer primary tumors. FOLR2+ macrophages localize in perivascular areas in the tumor stroma, where they interact with CD8+ T cells. FOLR2+ macrophages efficiently prime effector CD8+ T cells ex vivo. The density of FOLR2+ macrophages in tumors positively correlates with better patient survival. This study highlights specific roles for tumor-associated macrophage subsets and paves the way for subset-targeted therapeutic interventions in macrophages-based cancer therapies. Copyright © 2022 Elsevier Inc. All rights reserved.

Citation

Rodrigo Nalio Ramos, Yoann Missolo-Koussou, Yohan Gerber-Ferder, Christian P Bromley, Mattia Bugatti, Nicolas Gonzalo Núñez, Jimena Tosello Boari, Wilfrid Richer, Laurie Menger, Jordan Denizeau, Christine Sedlik, Pamela Caudana, Fiorella Kotsias, Leticia L Niborski, Sophie Viel, Mylène Bohec, Sonia Lameiras, Sylvain Baulande, Laëtitia Lesage, André Nicolas, Didier Meseure, Anne Vincent-Salomon, Fabien Reyal, Charles-Antoine Dutertre, Florent Ginhoux, Lene Vimeux, Emmanuel Donnadieu, Bénédicte Buttard, Jérôme Galon, Santiago Zelenay, William Vermi, Pierre Guermonprez, Eliane Piaggio, Julie Helft. Tissue-resident FOLR2+ macrophages associate with CD8+ T cell infiltration in human breast cancer. Cell. 2022 Mar 31;185(7):1189-1207.e25

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PMID: 35325594

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