iron-dependent cell death

CIL56 (CA3) is a small molecule that induces cellular ferroptosis through the production of iron-dependent reactive oxygen species (ROS). It also induces accumulation of long-chain saturated, monounsaturated, and polyunsaturated fatty acids in HT-1080 cells in vitro.HT-1080 cells lacking acetyl-CoA carboxylase 1 (ACC1), the rate-limiting enzyme in fatty acid synthesis, exhibit 5-fold resistance to CIL56 treatment, indicating ACC1 activity sensitizes cells to CIL56-induced cell death.

Piperazine erastin, an analog of erastin, induces ferroptosis, an iron-dependent form of non-apoptotic cell death.

Cetzole (Compound 1) acts as an inducer of ferroptosis (iron-dependent cell death) through the accumulation of ROS, leading to cell death. The compound exhibits varying half-maximal cytotoxic concentrations (CC50) against several cell lines: 2.56 μM in NCI-H522, 10.31 μM in NCI-H522 GFP-SCL7A11 #8, 2.71 μM in NCI-H522 RV-GFP, 3.07 μM in HT-1080, 14.9 μM in NARF2, and 6.28 μM in MDA-MB-231. This highlights Cetzole's potential for research in cancer therapeutics.

BG11 promotes the accumulation of Fe2+ and intracellular lipid peroxides, leading to ferroptosis (iron-dependent cell death). It regulates the expression of Bax and Bcl-2 proteins, inducing apoptosis (programmed cell death) in MDA-MB-231 cells. BG11 also causes cell cycle arrest at the G0 G1 and S phases, inhibiting the proliferation of TNBC cancer cells, with IC50 values of 0.49 μM for MDA-MB-231 and 0.52 μM for BT549. Additionally, it reduces cell migration and invasion and demonstrates antitumor effects in mouse models.

DEL-I25 is an effective activator of GPX4 that protects cells from ferroptosis (iron-dependent cell death).

QD-394 is an inducer of reactive oxygen species (ROS) production.1It induces lipid peroxidation, increases in intracellular accumulation of reactive oxygen species (ROS), and decreases in the reduced glutathione (GSH) to oxidized GSH (GSSG) ratio in MIA PaCa-2 pancreatic cancer cells when used at concentrations ranging from 0.5 to 10 μM. QD-394 is cytotoxic to MIA PaCa-2, PANC-1, and BxPC-3 cancer cells (IC50s = 0.64, 0.34, and 0.9 μM, respectively). QD-394 acts synergistically with napabucasin to reduce colony formation in MIA PaCa-2 cells. 1.Hu, S., Sechi, M., Singh, P.K., et al.A novel redox modulator induces a GPX4-mediated cell death that is dependent on iron and reactive oxygen speciesJ. Med. Chem.63(17)9838-9855(2020)

Ferroptosis apoptosis inducer-1 (compound 4d) acts as a dual inducer of both cell apoptosis (apoptosis) and iron-dependent cell death (ferroptosis). It promotes these processes by decreasing mitochondrial membrane potential and downregulating GPX4. Effective in vitro and in vivo, Ferroptosis apoptosis inducer-1 significantly inhibits the proliferation and metastasis of triple-negative breast cancer (TNBC), playing a crucial role in cancer research.

Agrimonolide, a compound derived from isocoumarins and found mainly in the herb Agrimonia pilosa Ledeb, has significant biological activity. agrimonolide exerts anti-inflammatory effects by inhibiting lipopolysaccharide (LPS)-induced activation of JAK-STATs and p38 MAPKs signaling pathways. Agrimonolide and its derivative, desmethyl agonolide, have been shown to be effective in increasing insulin-mediated glycogen levels in hepatocytes and may play a key role in regulating insulin-resistant HepG2 cells. agrimonolide exhibits inhibitory effects on cancer progression and induction of cell death and apoptosis by targeting SCD1 in ovarian cancer cells. In particular, Agrimonolide exhibited a dose-dependent inhibition of proliferation, migration and invasion of A2780 and SKOV-3 cells, while promoting apoptosis. The compound was also found to induce iron-mediated cell death while increasing reactive oxygen species (ROS) and total iron levels.Agrimonolide readily crosses the blood-brain barrier, suggesting its potential for therapeutic applications in neurological disorders.