Journal of Drug Targeting (2021)
Update date:2022-08-16
Topics:
Cheng, Xu
Gao, Chuya
Gong, Chen
Li, Wenhua
Liu, Xiaoying
Peng, Haisheng
Tang, Shukun
Tao, Haiquan
Yang, Bo
Zhang, Wenyuan
Ferroptosis is a regulated cell death pathway which depends on iron. Ferroptosis can be induced by limiting intracellular glutathione (GSH) synthesis, or inhibiting the activity of GPX4, or increasing intracellular accumulation of PE-AA-OOH, all of which involve NADPH. Therefore, NADPH depletion, excessive PE-AA-OOH, and GPX4 deficiency are generally considered to be the main characteristics of ferroptosis. In this research, the novel self-assembly nanomicelles modified by maltose ligand (Malt-PEG-Abz@RSL3) with superior nano characteristics were designed and fabricated. Malt-PEG-Abz@RSL3 micelles achieved active targeted drug delivery due to the high expression of glucose transporter (GLUT) and high uptake by HepG2 cells. Maltose-polyethylene glycol broke to release RSL3 for inhibiting GPX4 activity when Malt-PEG-Abz@RSL3 micelles entered the cells. Meanwhile, key coenzyme NADPH that participated in synthesis of GSH and Trx(SH)2 was depleted by azobenzene moiety, resulting in decreasing GSH and Trx(SH)2, which dually induced ferroptosis in tumour cells and promoted cell apoptosis.
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