SAT1 and cancer: N-acetylputrescine (NAP), a derivative of putrescine, has been found to help reduce intracellular oxidative stress, enhance the ability of immune cells to recognize and destroy cancer cells, and regulate the activity of key enzymes such as ODC and SSAT to inhibit tumor cell proliferation (Liu et al., 2017; Li et al., 2020), thereby exerting anti-cancer effects.