MCP-1 (Monocyte Chemoattractant Protein-1, also known as CCL2)
MCP-1/CCL2 is a chemokine involved in recruiting monocytes, memory T cells, and dendritic cells to sites of inflammation.
– It plays a key role in mediating immune cell trafficking, inflammation, and tissue remodeling.
MCP-1 is pivotal in inflammatory responses and can modulate immune cell infiltration into tissues.
– It also influences the polarization of macrophages, which may adopt pro-inflammatory (M1) or anti-inflammatory/pro-tumoral (M2) roles.
Many cancers (such as breast, prostate, ovarian, lung, and colon cancers) exhibit increased levels of MCP-1.
– Both tumor cells and associated stromal cells (e.g., cancer-associated fibroblasts, infiltrating immune cells) can produce MCP-1, contributing to an inflammatory milieu.
• Inducers of MCP-1:
– Hypoxia, oncogenic pathways, and cytokine-rich environments (e.g., IL-1β, TNF-α) can drive increased MCP-1 expression.
– This upregulation often correlates with an ongoing inflammatory response in the tumor microenvironment.
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