TGFB1 and neoplasm: Researches show that an increase of intratumoral H2O2 promotes the Fenton reaction, which leads to ferroptosis of tumor cells and releases tumor antigens.206,207 Inspired by this, Xie et al. created a biomimetic system (Pa-M/Ti-NC) that reduced T cell immunosuppression while triggering ferroptosis.208 TGF-β inhibitor (Ti) was loaded onto the N3-labeled leukocyte membranes.