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Dlamini MB, Bao S, Gao Z, Mei J, Ge H, Jiang L, Geng C, Li Q, Shi X, Liu Y, Cao J. Curcumin attenuates Cr (VI)-induced cell growth and migration by targeting autophagy-dependent reprogrammed metabolism. J Biochem Mol Toxicol 2022; 36:e23193. [PMID: 35924427 DOI: 10.1002/jbt.23193] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Revised: 05/16/2022] [Accepted: 07/25/2022] [Indexed: 11/06/2022]
Abstract
Hexavalent chromium [Cr (VI)] is a well-established carcinogen. Cr (VI)-treated cells are phenotypically characterized by aberrant levels of growth and migration. Curcumin, a polyphenolic compound from the plant turmeric, has been found to possess antiproliferation, anti-inflammation, and antioxidant properties. In this study, the effect of curcumin on Cr (VI)-induced cell survival and migration and the underlying mechanism were investigated. Cell viability assay on A549 and human embryonic lung fibroblast cells showed that curcumin at the concentration of 10 µM could significantly attenuate Cr (VI)-induced viability in both cell lines. Following Western blot assay and metabolomics assays, cotreatment with curcumin and Cr (VI) resulted in the suppression of Cr (VI)-induced glycolysis-, autophagy-, and migration-related proteins. Meanwhile, curcumin increased Cr (VI)-reduced oxidative phosphorylation (OXPHOS)-related proteins, COXIV and ND1. Moreover, curcumin suppressed Cr (VI)-induced mitochondrial dysfunction, mitochondrial mass decrease, and mitochondrial membrane potential loss. Treatment with curcumin for 24 h significantly attenuated pcATG4B-induced autophagy and the subsequent expression of glucose transporter 1, hexokinase II, and pyruvate kinase M2. Wound healing and transwell assay demonstrated that curcumin reduced Cr (VI)-induced cell migration. Taken together, these results showed that curcumin was able to attenuate Cr (VI)-induced cell viability and migration by targeting autophagy-dependent reprogrammed metabolism from OXPHOS to glycolysis.
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Affiliation(s)
- Mongameli B Dlamini
- Department of Occupational and Environmental Health, Dalian Medical University, Dalian, China
| | - Shibo Bao
- Department of Occupational and Environmental Health, Dalian Medical University, Dalian, China
| | - Zeyun Gao
- Department of Occupational and Environmental Health, Dalian Medical University, Dalian, China
| | - Junjie Mei
- Department of Occupational and Environmental Health, Dalian Medical University, Dalian, China
| | - Hong Ge
- Department of Occupational and Environmental Health, Dalian Medical University, Dalian, China
| | - Liping Jiang
- Department of Occupational and Environmental Health, Dalian Medical University, Dalian, China
| | - Chengyan Geng
- Department of Occupational and Environmental Health, Dalian Medical University, Dalian, China
| | - Qiujuan Li
- Department of Occupational and Environmental Health, Dalian Medical University, Dalian, China
| | - Xiaoxia Shi
- Department of Occupational and Environmental Health, Dalian Medical University, Dalian, China
| | - Yong Liu
- Lab of Pharmacology & Toxicology, School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin, China
| | - Jun Cao
- Department of Occupational and Environmental Health, Dalian Medical University, Dalian, China
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Mei J, Dlamini MB, Gao Z, Jiang L, Li Q, Geng C, Shi X, Liu Y, Kong Y, Cao J. A requirement for autophagy in HMGA2-induced metabolic reprogramming to support Cd-induced migration. Toxicology 2021; 462:152928. [PMID: 34481905 DOI: 10.1016/j.tox.2021.152928] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 08/13/2021] [Accepted: 09/01/2021] [Indexed: 02/04/2023]
Abstract
High mobility group A2 (HMGA2) is closely related to the occurrence, development and prognosis of tumors. But the mechanism is unclear. Metabolic reprogramming is a dominant way to meet anabolic and energy requirements of tumor cells for their survival, growth and proliferation. Here, we investigated the role of metabolic reprogramming from oxidative phosphorylation (OXPHOS) to glycolysis mediated by HMGA2/autophagy axis in cadmium (Cd, CdCl2)-induced migration. First, we found that Cd induced glycolysis and reduced OXPHOS in vivo (0.5 and 1 mg/kg, i.p. or 0.8 and 1.6 μM, i.t.) and in vitro (2 μM in A549 cells and 0.05 μM in HELF cells). Then, genetic knockdown of HMGA2 restored Cd-reduced mitochondrial mass and OXPHOS and inhibited Cd-increased glycolysis, indicating that HMGA2 was involved in Cd-induced metabolic reprogramming. 2-Deoxy-d-glucose (2DG, 5 mM), the inhibitor of glycolysis decreased Cd/HMGA2-induced cell migration and restored Cd/HMGA2-decreased OXPHOS and mitochondrial mass. Inhibition of autophagy by 3-Methyladenine (3MA, 3 mM) elucidated an essential role of autophagy in HMGA2-induced glycolysis, migration, and HMGA2-reduced OXPHOS. Overall, our study demonstrated that autophagy was required for HMGA2-mediated metabolic reprogramming, which was critical for Cd-induced migration. Targeting HMGA2 and autophagy-dependent reprogrammed metabolism may be an effective way to inhibit Cd-induced cell migration.
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Affiliation(s)
- Junjie Mei
- Department of Occupational and Environmental Health, Dalian Medical University, No. 9 W. Lvshun South Road, Dalian 116044, China
| | - Mongameli B Dlamini
- Department of Occupational and Environmental Health, Dalian Medical University, No. 9 W. Lvshun South Road, Dalian 116044, China
| | - Zeyun Gao
- Department of Occupational and Environmental Health, Dalian Medical University, No. 9 W. Lvshun South Road, Dalian 116044, China
| | - Liping Jiang
- Department of Occupational and Environmental Health, Dalian Medical University, No. 9 W. Lvshun South Road, Dalian 116044, China
| | - Qiujuan Li
- Department of Occupational and Environmental Health, Dalian Medical University, No. 9 W. Lvshun South Road, Dalian 116044, China
| | - Chengyan Geng
- Department of Occupational and Environmental Health, Dalian Medical University, No. 9 W. Lvshun South Road, Dalian 116044, China
| | - Xiaoxia Shi
- Department of Occupational and Environmental Health, Dalian Medical University, No. 9 W. Lvshun South Road, Dalian 116044, China
| | - Yong Liu
- School of Life Science and Medicine, Dalian University of Technology, Panjin 124221, China
| | - Ying Kong
- Department of Biochemistry and Molecular Biology, Dalian Medical University, Dalian 116044, China.
| | - Jun Cao
- Department of Occupational and Environmental Health, Dalian Medical University, No. 9 W. Lvshun South Road, Dalian 116044, China.
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Dlamini MB, Gao Z, Jiang L, Geng C, Li Q, Shi X, Liu Y, Cao J. The crosstalk between mitochondrial dysfunction and endoplasmic reticulum stress promoted ATF4-mediated mitophagy induced by hexavalent chromium. Environ Toxicol 2021; 36:1162-1172. [PMID: 33650752 DOI: 10.1002/tox.23115] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 02/18/2021] [Indexed: 06/12/2023]
Abstract
Chromium (Cr) compounds are markedly toxic and carcinogenic. Previously, we found that Cr (VI) induced autophagy in A549 cells. Here, the effect of mitochondrial dysfunction and endoplasmic reticulum (ER) stress on inducing mitophagy was investigated in both A549 and H1299 cells. Exposure to Cr (VI) for 6 h significantly enhanced reactive oxygen species (ROS) production and reduced mitochondrial membrane potential (MMP). Transmission electron microscopy showed that Cr (VI) induced mitochondrial morphological changes, such as, mitochondrial swelling and vacuolization. The elevated expression of GRP78 and p-PERK suggested that Cr (VI) resulted in ER stress. Both mitochondrial dysfunction and ER stress played an important role in Cr (VI)-induced mitophagy, as the mitochondrial function inhibitor, carbonyl cyanide 3-chlorophenylhydrazone (CCCP) induced PINK1 and PARK2 and increased the expression of GRP78 and p-PERK while the levels of Cr (VI)-induced PINK1, PARK2, LC3-II were reduced after ER stress inhibitor, phenylbutyric acid (4PBA) pretreatment. When A549 cells were treated with CCCP and 4-PBA simultaneously, CCCP-induced expressions of PINK1, PARK2 and LC3-II decreased significantly compared with that of only CCCP-treated cells, indicating that there was a crosstalk between mitochondria and ER in inducing mitophagy. Additionally, the crosstalk between mitochondrial dysfunction and ER stress modulated the expression of Cr (VI)-induced ATF4, which resulted in mitophagy. Collectively, our data demonstrated that Cr (VI)-induced mitophagy mediated by ATF4 via the crosstalk between ER stress and mitochondrial dysfunction.
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Affiliation(s)
- Mongameli B Dlamini
- Department of Occupational and Environmental Health, Dalian Medical University, Dalian, China
| | - Zeyun Gao
- Department of Occupational and Environmental Health, Dalian Medical University, Dalian, China
| | - Liping Jiang
- Department of Occupational and Environmental Health, Dalian Medical University, Dalian, China
| | - Chengyan Geng
- Department of Occupational and Environmental Health, Dalian Medical University, Dalian, China
| | - Qiujuan Li
- Department of Occupational and Environmental Health, Dalian Medical University, Dalian, China
| | - Xiaoxia Shi
- Department of Occupational and Environmental Health, Dalian Medical University, Dalian, China
| | - Yong Liu
- School of Life Science and Medicine, Dalian University of Technology, Panjin, China
| | - Jun Cao
- Department of Occupational and Environmental Health, Dalian Medical University, Dalian, China
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