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. 2022 Apr 16;13(4):355. doi: 10.1038/s41419-022-04775-z

Fig. 5. Iron overload induces M1 polarization.

Fig. 5

Iron accumulation in macrophages promotes M1 polarization in three main ways. M1 markers such as IL-6, TNF-α and IL-1β increase and M2 markers like TGM2 decrease. Iron overload can enhance glycolysis and cause M1 type. Besides, the rise of ROS level and p53 acetylation can also lead to M1 macrophages.