Monitoring and Regulating Intracellular GPX4 MRNA Using Gold Nanoflare Probes and Enhancing Erastin-Induced Ferroptosis

Overview

Journal Biosensors (Basel)

Specialty Biotechnology

Date 2022 Dec 23

PMID 36551145

Authors

Xiaoyan Liu

Qiangqiang Yang

Yanan Sui

Qiaoli Yue

Shuqing Yan

Chuan Li

Min Hong

Affiliations

Soon will be listed here.

Abstract

Glutathione peroxidase 4 (GPX4) plays an important effect on ferroptosis. Down-regulating the expression of GPX4 mRNA can decrease the content of GPX4. In this work, a gold nanoflare (AuNF) probe loaded with anti-sense sequences targeting for GPX4 mRNA was designed to monitor and down-regulate intracellular GPX4 mRNA using fluorescence imaging in situ and using anti-sense technology. The results revealed that there was a marked difference for the expression of GPX4 mRNA in different cell lines, and the survival rate of cancer cells was not significantly effected when the relative mRNA and protein expression levels of GPX4 was down-regulated by AuNF probes. However, when co-treated with AuNF probes, the low expression of GPX4 strengthened erastin-induced ferroptosis, and this synergy showed a better effect on inhibiting the proliferation of cancer cells.

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