Immune cells in cancer

Macrophages are immune cells that can shift their behavior dramatically depending on the signals they receive, adopting states that either attack tumors or, paradoxically, help them grow and evade treatment. Within tumors, these cells—along with related myeloid populations such as monocytes and myeloid-derived suppressor cells—form a complex immune environment that shapes whether a cancer progresses or responds to therapy. Researchers are working to understand what drives macrophages toward protective versus tumor-supporting states, how their internal metabolism governs those switches, and whether manipulating this plasticity could make existing immunotherapies more effective. A central open question is how the heterogeneity among macrophage populations in different tissues translates into distinct functional outcomes, and how that variation might be targeted with enough precision to tip the balance against the tumor.

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Keywords

MacrophageActivationPolarizationTumor-associatedMonocytesMyeloid-derived suppressor cells