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Updated: Jun 16, 2026
Revealing the Ferroptotic Phenotype of Medulloblastoma
Published on: March 15, 2024
Discovery and Optimization of Novel Carbazole-Based Ferroptosis Inhibitors
Chuantong Zhou1, Meiting Yao1, Jiefu Zheng2
1Guangdong Pharmaceutical University, Guangzhou, People's Republic of China.
Abstract:
Ferroptosis is an iron-dependent form of regulated cell death that plays a critical role in the pathogenesis of multiple human diseases, making it an attractive target for therapeutic strategy. In this study, the FerrBERT model was employed to screen a small-molecule library, leading to the identification of 3-amino-9-ethylcarbazole as a potent inhibitor of RSL3-induced ferroptosis in HT22 mouse hippocampal neuronal cells (EC50 = 65.2 nM). Using this scaffold as a starting point, 50 derivatives were designed, synthesized, and systematically evaluated for their structure-activity relationships (SARs). Among them, compound C4 exhibited a remarkable enhancement in inhibitory potency, showing an approximately 8.4-fold improvement over the lead compound while maintaining low cytotoxicity (EC50 = 7.77 nM; CC50 = 5.97 µM; SI = 768). Mechanistic studies further revealed that C4 selectively suppresses ferroptosis through an antioxidant-mediated pathway. Collectively, these findings identified C4 as a highly potent ferroptosis inhibitor with significant potential for the development of therapeutics targeting ferroptosis-related neurological disorders.
Insights
Researchers identified a potent ferroptosis inhibitor, C4, by screening a small-molecule library. This compound shows promise for treating neurological disorders linked to ferroptosis.
Area of Science:
- Biochemistry
- Neuroscience
- Pharmacology
Background:
- Ferroptosis, an iron-dependent cell death, is implicated in various human diseases.
- Targeting ferroptosis presents a promising therapeutic avenue for disease treatment.
Purpose of the Study:
- To identify novel ferroptosis inhibitors using computational screening.
- To design, synthesize, and evaluate derivatives of a lead compound for enhanced potency and safety.
Main Methods:
- Utilized the FerrBERT model for small-molecule library screening.
- Synthesized 50 derivatives and evaluated their structure-activity relationships (SARs).
- Conducted mechanistic studies to elucidate the compound's mode of action.
Main Results:
- Identified 3-amino-9-ethylcarbazole as a lead ferroptosis inhibitor (EC50 = 65.2 nM).
- Compound C4 demonstrated significantly enhanced potency (EC50 = 7.77 nM) with low cytotoxicity (CC50 = 5.97 µM).
- C4 selectively inhibits ferroptosis via an antioxidant-mediated pathway.
Conclusions:
- Compound C4 is a highly potent ferroptosis inhibitor.
- C4 shows potential for developing therapeutics for ferroptosis-related neurological disorders.
