Erastin2 (Synonyms: 35MEW28)

Erastin2 is a potent system xc- inhibitor and ferroptosis-inducing agent ^[1].

Erastin2 (5µM, 24h) significantly inhibited the activity of human HAP1 haploid cells, and that erastin2-induced cell death was inhibited by co-treatment with the lipophilic radical-trapping antioxidant ferrostatin-1 or the iron chelator deferoxamine (DFO), but not the pan-caspase inhibitor Q-VD-OPh ^[1]. Erastin2 induced ferroptosis in HT-1080(1 µM), T98G glioblastoma (1 µM), and A549 non-small-cell lung carcinoma cells (2 µM), and non-transformed IMR-90 diploid fibroblasts (125nM) ^[2]. Erastin2 (1 µM) inhibited system xc- function, depleted total glutathione (GSH + GSSG), and upregulated CHAC1 expression ^[2]. Erastin2 (1-10µM) increased FSP1KO cells sensitivity ^[3]. In the context of erastin2-induced ferroptosis, the onset of cell death correlates with the oxidation of the lipid peroxide-sensitive probe C11 BODIPY 581/591 (C11) (Cat.No. GC40165) specifically at the plasma membrane, linking the onset of cell death to a key terminal marker of the ferroptotic process ^[1].

References:
[1]. Cao JY, Poddar A, Magtanong L, Lumb JH, Mileur TR, Reid MA, Dovey CM, Wang J, Locasale JW, Stone E, Cole SP. A genome-wide haploid genetic screen identifies regulators of glutathione abundance and ferroptosis sensitivity. Cell reports. 2019 Feb 5;26(6):1544-56.
[2]. Magtanong L, Ko PJ, To M, Cao JY, Forcina GC, Tarangelo A, Ward CC, Cho K, Patti GJ, Nomura DK, Olzmann JA. Exogenous monounsaturated fatty acids promote a ferroptosis-resistant cell state. Cell chemical biology. 2019 Mar 21;26(3):420-32.
[3]. Bersuker K, Hendricks JM, Li Z, Magtanong L, Ford B, Tang PH, Roberts MA, Tong B, Maimone TJ, Zoncu R, Bassik MC. The CoQ oxidoreductase FSP1 acts parallel to GPX4 to inhibit ferroptosis. Nature. 2019 Nov 28;575(7784):688-92.