Cysteine assay On day 12, cultured erythroblasts were harvested, washed with PBS buffer once, and resuspended in distilled water
Structurally, DSIP is remarkably simple
Contains glutathione and vitamin b3
A double-blind study in chronic insomniac patients did not produce a clean confirmation of benefit (PMID 1299794), and other human work has treated the endogenous compound as a marker rather than a confirmed sleep agent
Human efficacy is unproven
Subsequently, Yagoda and Yangs groups demonstrated that iron chelators could inhibit this type of cell death, discovered that Ras-selective lethal 3 (RSL3) mimicked Erastins effects in RAS-mutant cells, and found that elevated levels of ROS and iron were closely associated with RAS signaling (Yagoda et al., 2007