• Medientyp: E-Artikel
  • Titel: Breast cancer associated CD169+ macrophages possess broad immunosuppressive functions but enhance antibody secretion by activated B cells
  • Beteiligte: Gunnarsdottir, Frida Björk; Briem, Oscar; Lindgren, Aida Yifter; Källberg, Eva; Andersen, Cajsa; Grenthe, Robert; Rosenqvist, Cassandra; Millrud, Camilla Rydberg; Wallgren, Mika; Viklund, Hannah; Bexell, Daniel; Johansson, Martin E.; Hedenfalk, Ingrid; Hagerling, Catharina; Leandersson, Karin
  • Erschienen: Frontiers Media SA, 2023
  • Erschienen in: Frontiers in Immunology, 14 (2023)
  • Sprache: Nicht zu entscheiden
  • DOI: 10.3389/fimmu.2023.1180209
  • ISSN: 1664-3224
  • Entstehung:
  • Anmerkungen:
  • Beschreibung: CD169+ resident macrophages in lymph nodes of breast cancer patients are for unknown reasons associated with a beneficial prognosis. This contrasts CD169+ macrophages present in primary breast tumors (CD169+ TAMs), that correlate with a worse prognosis. We recently showed that these CD169+ TAMs were associated with tertiary lymphoid structures (TLSs) and Tregs in breast cancer. Here, we show that CD169+ TAMs can be monocyte-derived and express a unique mediator profile characterized by type I IFNs, CXCL10, PGE2 and inhibitory co-receptor expression pattern. The CD169+ monocyte-derived macrophages (CD169+ Mo-M) possessed an immunosuppressive function in vitro inhibiting NK, T and B cell proliferation, but enhanced antibody and IL6 secretion in activated B cells. Our findings indicate that CD169+ Mo-M in the primary breast tumor microenvironment are linked to both immunosuppression and TLS functions, with implications for future targeted Mo-M therapy.
  • Zugangsstatus: Freier Zugang