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Podoplanin-Expressing Macrophages Promote Lymphangiogenesis and Lymphoinvasion in Breast Cancer

  • Paweł Bieniasz-Krzywiec
  • , Rosa Martín-Pérez
  • , Manuel Ehling
  • , Melissa García-Caballero
  • , Sotiria Pinioti
  • , Samantha Pretto
  • , Roel Kroes
  • , Chiara Aldeni
  • , Mario Di Matteo
  • , Hans Prenen
  • , María Virginia Tribulatti
  • , Oscar Campetella
  • , Ann Smeets
  • , Agnes Noel
  • , Giuseppe Floris
  • , Jo A Van Ginderachter
  • , Massimiliano Mazzone

Onderzoeksoutput: Articlepeer review

194 Citaten (Scopus)

Samenvatting

Among mammary tumor-infiltrating immune cells, the highest expression of podoplanin (PDPN) is found in a subset of tumor-associated macrophages (TAMs). We hereby demonstrate that PDPN is involved in the attachment of this TAM subset to lymphatic endothelial cells (LECs). Mechanistically, the binding of PDPN to LEC-derived galectin 8 (GAL8) in a glycosylation-dependent manner promotes the activation of pro-migratory integrin β1. When proximal to lymphatics, PDPN-expressing macrophages (PoEMs) stimulate local matrix remodeling and promote vessel growth and lymphoinvasion. Anti-integrin β1 blockade, macrophage-specific Pdpn knockout, or GAL8 inhibition impairs TAM adhesion to LECs, restraining lymphangiogenesis and reducing lymphatic cancer spread. In breast cancer patients, association of PoEMs with tumor lymphatic vessels correlates with incidences of lymph node and distant organ metastasis.

Originele taal-2English
Pagina's (van-tot)917-936
Aantal pagina's20
TijdschriftCell Metabolism
Volume30
Nummer van het tijdschrift5
DOI's
StatusPublished - 5 nov. 2019

Bibliografische nota

Copyright © 2019 Elsevier Inc. All rights reserved.

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