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Cancer-associated hypersialylated MUC1 drives the differentiation of human monocytes into macrophages with a pathogenic phenotype

  • GSTT Guy's and St Thomas' NHS Foundation Trust
  • National Institute for Health Research (NIHR) Biomedical Research Centre at Guy's St Thomas' National Health Service (NHS) Foundation Trust and King's College London
  • KHP Tissue Bank
  • University of Copenhagen
  • Bielefeld University
  • Breast Cancer Biology

Research output: Contribution to journalArticlepeer-review

60 Citations (Scopus)
227 Downloads (Pure)

Abstract

The tumour microenvironment plays a crucial role in the growth and progression of cancer, and the presence of tumour-associated macrophages (TAMs) is associated with poor prognosis. Recent studies have demonstrated that TAMs display transcriptomic, phenotypic, functional and geographical diversity. Here we show that a sialylated tumour-associated glycoform of the mucin MUC1, MUC1-ST, through the engagement of Siglec-9 can specifically and independently induce the differentiation of monocytes into TAMs with a unique phenotype that to the best of our knowledge has not previously been described. These TAMs can recruit and prolong the lifespan of neutrophils, inhibit the function of T cells, degrade basement membrane allowing for invasion, are inefficient at phagocytosis, and can induce plasma clotting. This macrophage phenotype is enriched in the stroma at the edge of breast cancer nests and their presence is associated with poor prognosis in breast cancer patients.

Original languageEnglish
Article number644
JournalCommunications Biology
Volume3
Issue number1
DOIs
Publication statusPublished - 1 Dec 2020

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 3 - Good Health and Well-being
    SDG 3 Good Health and Well-being

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