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Updated: Oct 10, 2025

In Vitro Assay to Study Tumor-macrophage Interaction
Published on: August 1, 2019
Tumor Properties Mediate the Relationship between Peripheral Blood Monocytes and Tumor-Associated Macrophages in
Marina Stakheyeva1,2, Marina Patysheva1,2, Evgenia Kaigorodova3
1Laboratory Molecular Oncology and Immunology, Cancer Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk, Russia.
Abstract:
In cancer patients, circulating monocytes show functional alterations. Since monocytes are precursors of tumor-associated macrophages (TAMs), TAMs ensuring tumor viability are potentially replenished through the recruitment of monocytes with specific properties. We demonstrated that locoregional metastasis and circulating factors, such as CD45-EpCAM + CD44 + CD24-/low circulating tumor cells, and serum MCP-1 and HMGB1 were statistically associated with modulation of the monocyte features in breast cancer patients. The count of circulating CD45-EpCAM + cells correlated with CD68+, CD163 + monocyte in blood, and with density of CD68 + TAM in breast cancer tumors. Overall, the relationship between monocytes and TAMs is mediated by the tumor in breast cancer patients.
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