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Fu Z, Deng M, Zhou Q, Li S, Liu W, Cao S, Zhang L, Deng Y, Xi S. Arsenic activated GLUT1-mTORC1/HIF-1α-PKM2 positive feedback networks promote proliferation and migration of bladder epithelial cells. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 947:174538. [PMID: 38977090 DOI: 10.1016/j.scitotenv.2024.174538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Revised: 07/03/2024] [Accepted: 07/04/2024] [Indexed: 07/10/2024]
Abstract
Arsenic (As) is recognized as a potent environmental contaminant associated with bladder carcinogenesis. However, its molecular mechanism remains unclear. Metabolic reprogramming is one of the hallmarks of cancer and is as a central feature of malignancy. Here, we performed the study of cross-talk between the mammalian target of rapamycin complex 1 (mTORC1)/ Hypoxia-inducible factor 1 alpha (HIF-1α) pathway and aerobic glycolysis in promoting the proliferation and migration of bladder epithelial cells treated by arsenic in vivo and in vitro. We demonstrated that arsenite promoted N-methyl-N-nitrosourea (MNU)-induced tumor formation in the bladder of rats and the malignant behavior of human ureteral epithelial (SV-HUC-1) cell. We found that arsenite positively regulated the mTORC1/HIF-1α pathway through glucose transporter protein 1 (GLUT1), which involved in the malignant progression of bladder epithelial cells relying on glycolysis. In addition, pyruvate kinase M2 (PKM2) increased by arsenite reduced the protein expressions of succinate dehydrogenase (SDH) and fumarate hydratase (FH), leading to the accumulation of tumor metabolites of succinate and fumarate. Moreover, heat shock protein (HSP)90, functioning as a chaperone protein, stabilized PKM2 and thereby regulated the proliferation and aerobic glycolysis in arsenite treated SV-HUC-1 cells. Taken together, these results provide new insights into mTORC1/HIF-1α and PKM2 networks as critical molecular targets that contribute to the arsenic-induced malignant progression of bladder epithelial cells.
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Affiliation(s)
- Zhushan Fu
- Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention (China Medical University), Ministry of Education, Shenyang, Liaoning 110122, China; The Key Laboratory of Liaoning Province on Toxic and Biological Effects of Arsenic, Shenyang, Liaoning 110122, China; Department of Environmental Health, School of Public Health, China Medical University, Shenyang 110122, China
| | - Meiqi Deng
- Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention (China Medical University), Ministry of Education, Shenyang, Liaoning 110122, China; Department of Neurosurgery, Shengjing Hospital of China Medical University, Shenyang, China
| | - Qing Zhou
- Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention (China Medical University), Ministry of Education, Shenyang, Liaoning 110122, China; The Key Laboratory of Liaoning Province on Toxic and Biological Effects of Arsenic, Shenyang, Liaoning 110122, China; Department of Environmental Health, School of Public Health, China Medical University, Shenyang 110122, China
| | - Sihao Li
- Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention (China Medical University), Ministry of Education, Shenyang, Liaoning 110122, China; The Key Laboratory of Liaoning Province on Toxic and Biological Effects of Arsenic, Shenyang, Liaoning 110122, China; Department of Environmental Health, School of Public Health, China Medical University, Shenyang 110122, China
| | - Weijue Liu
- Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention (China Medical University), Ministry of Education, Shenyang, Liaoning 110122, China; The Key Laboratory of Liaoning Province on Toxic and Biological Effects of Arsenic, Shenyang, Liaoning 110122, China; Department of Environmental Health, School of Public Health, China Medical University, Shenyang 110122, China
| | - Siyan Cao
- Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention (China Medical University), Ministry of Education, Shenyang, Liaoning 110122, China; The Key Laboratory of Liaoning Province on Toxic and Biological Effects of Arsenic, Shenyang, Liaoning 110122, China; Department of Environmental Health, School of Public Health, China Medical University, Shenyang 110122, China
| | - Lei Zhang
- Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention (China Medical University), Ministry of Education, Shenyang, Liaoning 110122, China; The Key Laboratory of Liaoning Province on Toxic and Biological Effects of Arsenic, Shenyang, Liaoning 110122, China; Department of Environmental Health, School of Public Health, China Medical University, Shenyang 110122, China
| | - Yu Deng
- Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention (China Medical University), Ministry of Education, Shenyang, Liaoning 110122, China; The Key Laboratory of Liaoning Province on Toxic and Biological Effects of Arsenic, Shenyang, Liaoning 110122, China; Department of Environmental Health, School of Public Health, China Medical University, Shenyang 110122, China.
| | - Shuhua Xi
- Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention (China Medical University), Ministry of Education, Shenyang, Liaoning 110122, China; The Key Laboratory of Liaoning Province on Toxic and Biological Effects of Arsenic, Shenyang, Liaoning 110122, China; Department of Environmental Health, School of Public Health, China Medical University, Shenyang 110122, China.
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Yang D, Xia X, Xi S. Salvianolic acid A attenuates arsenic-induced ferroptosis and kidney injury via HIF-2α/DUOX1/GPX4 and iron homeostasis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 907:168073. [PMID: 37879473 DOI: 10.1016/j.scitotenv.2023.168073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Revised: 10/19/2023] [Accepted: 10/21/2023] [Indexed: 10/27/2023]
Abstract
Arsenic (As) is a prevalent pollutant in the environment and causes a high frequency of kidney disease in areas of high arsenic contamination, but its pathogenic mechanisms have yet to be completely clarified. Ferroptosis is a new form of cell death mainly dependent on lipid peroxidation and iron accumulation. Several reports have suggested that ferroptosis is operative in a spectrum of diseases caused by arsenic exposure, including in the lungs, pancreas, and testis. However, the mechanism and exact role of ferroptosis in arsenic-induced kidney injury is not known. Firstly, by constructing in vivo and in vitro arsenic exposure models, we confirmed the occurrence of ferroptosis based on the identification of the ability of NaASO2 to cause kidney injury. In addition, we found that arsenic exposure could upregulate DUOX1 expression in kidney and HK-2 cells, and after knocking down DUOX1 using siRNA was able to significantly upregulate GPX4 expression and attenuate ferroptosis. Subsequently using bioinformatics, we identified and proved the involvement of HIF-2α in the course of ferroptosis, and further confirmed by dual luciferase assay that HIF-2α promotes DUOX1 transcription to increase its expression. Finally, intervention with the natural ingredient SAA significantly attenuated arsenic-induced ferroptosis and kidney injury. These results showed that arsenic could cause ferroptosis and kidney injury by affecting HIF-2α/DUOX1/GPX4 and iron homeostasis and that SAA was an effective intervention component. This study not only discovered the molecular mechanism of sodium arsenite-induced kidney injury but also explored an active ingredient with intervention potential, providing a scientific basis for the prevention and treatment of sodium arsenite-induced kidney injury.
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Affiliation(s)
- Desheng Yang
- Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention (China Medical University), Ministry of Education, Shenyang, Liaoning 110122, China; The Key Laboratory of Liaoning Province on Toxic and Biological Effects of Arsenicy, Shenyang, Liaoning 110122, China; Department of Environmental Health, School of Public Health, China Medical University, Shenyang, Liaoning 110122, China
| | - Xinyu Xia
- Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention (China Medical University), Ministry of Education, Shenyang, Liaoning 110122, China; The Key Laboratory of Liaoning Province on Toxic and Biological Effects of Arsenicy, Shenyang, Liaoning 110122, China; Department of Environmental Health, School of Public Health, China Medical University, Shenyang, Liaoning 110122, China
| | - Shuhua Xi
- Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention (China Medical University), Ministry of Education, Shenyang, Liaoning 110122, China; The Key Laboratory of Liaoning Province on Toxic and Biological Effects of Arsenicy, Shenyang, Liaoning 110122, China; Department of Environmental Health, School of Public Health, China Medical University, Shenyang, Liaoning 110122, China.
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Jin P, Zhou Q, Xi S. Low-dose arsenite causes overexpression of EGF, TGFα, and HSP90 through Trx1-TXNIP-NLRP3 axis mediated signaling pathways in the human bladder epithelial cells. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 247:114263. [PMID: 36343453 DOI: 10.1016/j.ecoenv.2022.114263] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 10/29/2022] [Accepted: 10/30/2022] [Indexed: 06/16/2023]
Abstract
Epidemiological studies have demonstrated an increased incidence of bladder cancer in arseniasis- endemic areas; however, the precise molecular mechanisms remain unknown. Our previous results have shown that the protein levels of EGF, TGFα, and HSP90 in arsenite-treated bladder uroepithelial cells increased markedly and contributed to hyperactivation of EGF receptors. The aim of this study was to further explore the regulatory ways underlying overexpression of EGF, TGFα, and HSP90 in these cells. The present results showed that both Trx and GSH systems were stimulated in arsenite-treated cells, and ROS levels in 2 μM arsenite-treated cells did not changed obviously; however, ROS levels in 4 μM arsenite-treated cells increased significantly. By using the antioxidant and specific inhibitors, we found that in 2 μM arsenite-treated cells, JNK/NF-κB signaling pathway was involved in overexpression of EGF and TGFα, and ERK/NF-κB signaling pathway contributed to HSP90 overexpression, however in 4 μM arsenite-treated cells, both ERK/ and JNK/NF-κB signaling pathways were involved in overexpression of EGF, TGFα, and HSP90, and PI3K/AKT/NF-κB signaling pathway contributed to overexpression of EGF and TGFα. Furthermore, our results also showed that the Trx1-TXNIP-NLRP3 axis was activated in arsenite-treated cells, and played a pivotal role in activation of the signaling pathways involved in overexpression of EGF, TGFα, and HSP90. In conclusion, the Trx1-TXNIP-NLRP3 axis might be activated by arsenite-induced redox imbalance in bladder uroepithelial cells, and mediate the activation of signaling pathways involved in overexpression of EGF, TGFα, and HSP90.
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Affiliation(s)
- Peiyu Jin
- Department of Nutrition and Food Hygiene, School of Public Health, China Medical University, No 77 Puhe Road, Shenyang North New Area, Shenyang, Liaoning 110122, PR China
| | - Qing Zhou
- Department of Occupational and Environmental Health, School of Public Health, China Medical University, PR China
| | - Shuhua Xi
- Department of Occupational and Environmental Health, School of Public Health, China Medical University, PR China.
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Zou SS, Qiao Y, Zhu S, Gao B, Yang N, Liu YJ, Chen J. Intrinsic strategies for the evasion of cGAS-STING signaling-mediated immune surveillance in human cancer: How therapy can overcome them. Pharmacol Res 2021; 166:105514. [PMID: 33631336 DOI: 10.1016/j.phrs.2021.105514] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 02/13/2021] [Accepted: 02/19/2021] [Indexed: 12/19/2022]
Abstract
Cyclic GMP-AMP synthase (cGAS) recognizes cytosolic DNA and catalyzes the formation of cyclic GMP-AMP, which upon activation triggers the induction of stimulator of interferon genes (STING), leading to type I interferons production; these events then promote the cross-priming of dendritic cells and the initiation of a tumor-specific CD8+ T cell response. However, cancer cells in the tumor microenvironment cannot trigger intrinsic cGAS-STING signaling, regardless of the expression of cGAS and STING. This dysfunctional cGAS-STING signaling enables cancer cells to evade immune surveillance, thereby promoting tumorigenesis. Here, we review recent advances in the current understanding of the activation of cGAS-STING signaling and immunotherapies based on this pathway and focus on the mechanisms for the inactivation of this pathway in tumor cells to promote the development of cancer immunotherapy. The discovery of inherent resistance and the selection of appropriate combination therapies are of great significance for tumor treatment development.
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Affiliation(s)
- Shan-Shan Zou
- Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, China
| | - Yuan Qiao
- Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, China
| | - Shan Zhu
- Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, China
| | - Bao Gao
- Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, China
| | - Ning Yang
- Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, China
| | - Yong-Jun Liu
- Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, China.
| | - Jingtao Chen
- Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, China.
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