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Regulating SLC7A11/GSH/GPX4 axis by glucose dyshomeostasis to simultaneously promote disulfidptosis, cuproptosis and
Mengsi Zhang1,2, Hao Zheng3, Hao Jin3
1Joint Laboratory of Opto-Functional Theranostics in Medicine and Chemistry, Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, 130021, PR China.
Abstract:
As one of the key targets of tumor metabolic therapy, glucose dyshomeostasis by disrupting glucose metabolism possesses the potential to reverse therapeutic resistance of a variety of regulated cell deaths (RCDs), but the functional pathways are not fully revealed and employed. Herein, we demonstrate that the intervention on SLC7A11/GSH/GPX4 antioxidant axis by glucose dyshomeostasis can simultaneously promote disulfidptosis, cuproptosis and ferroptosis, which is verified by employing glucose oxidase (GOx)-modified copper-apigenin (CuAp) network nanoshuttles (CuAp@GOx NSs) in ovarian tumor therapy. Ap and GOx can jointly induce glucose dyshomeostasis respectively by inhibiting glucose transporter 1-mediated glucose uptake upstream, and consuming massive glucose downstream. As a result of glucose dyshomeostasis, the NADPH supplement is downregulated, which further disrupts SLC7A11/GSH/GPX4 antioxidant axis. This simultaneously boosts disulfidptosis by facilitating cystine accumulation, cuproptosis by attenuating GSH-mediated Cu+ inactivation, and ferroptosis by downregulating GPX4 expression. Owing to the combination of disulfidptosis, cuproptosis and ferroptosis, CuAp@GOx NSs exhibit good efficacy in treating ovarian tumor model. This work proposes an alternative strategy for tumor therapy based on glucose dyshomeostasis, which mainly targets the RCDs relating to SLC7A11/GSH/GPX4 axis.
Insights
Disrupting glucose metabolism via glucose dyshomeostasis triggers multiple cell death types, including disulfidptosis, cuproptosis, and ferroptosis. This approach enhances ovarian tumor therapy by targeting the SLC7A11/GSH/GPX4 antioxidant axis.
Area of Science:
- Biomedical Engineering
- Oncology
- Metabolic Therapy
Background:
- Glucose dyshomeostasis is a key target in tumor metabolic therapy, potentially overcoming resistance to regulated cell deaths (RCDs).
- The precise pathways linking glucose metabolism disruption to RCDs and their therapeutic applications require further elucidation.
- The SLC7A11/GSH/GPX4 antioxidant axis is implicated in cellular responses to metabolic stress.
Purpose of the Study:
- To investigate how glucose dyshomeostasis impacts the SLC7A11/GSH/GPX4 antioxidant axis.
- To explore the potential of simultaneously inducing disulfidptosis, cuproptosis, and ferroptosis through glucose dyshomeostasis.
- To evaluate the therapeutic efficacy of a novel nanoshuttle system in ovarian tumor models.
Main Methods:
- Utilized glucose oxidase (GOx)-modified copper-apigenin (CuAp) network nanoshuttles (CuAp@GOx NSs) to induce glucose dyshomeostasis.
- Inhibited glucose transporter 1 (GLUT1) and consumed glucose to achieve dyshomeostasis.
- Assessed the impact on NADPH levels, the SLC7A11/GSH/GPX4 axis, and subsequent RCD induction.
Main Results:
- Glucose dyshomeostasis downregulated NADPH, disrupting the SLC7A11/GSH/GPX4 antioxidant axis.
- Simultaneous induction of disulfidptosis (via cystine accumulation), cuproptosis (via GSH-mediated copper inactivation), and ferroptosis (via GPX4 downregulation) was achieved.
- CuAp@GOx NSs demonstrated significant efficacy in an ovarian tumor model due to the combined RCD effects.
Conclusions:
- Glucose dyshomeostasis effectively targets the SLC7A11/GSH/GPX4 axis to induce multiple RCDs.
- CuAp@GOx NSs offer a promising therapeutic strategy for ovarian cancer by combining disulfidptosis, cuproptosis, and ferroptosis.
- This study presents a novel approach for tumor therapy centered on manipulating glucose metabolism and RCD pathways.
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