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Wang M, Chen X, Fu G, Ge M. Glutathione peroxidase 2 overexpression promotes malignant progression and cisplatin resistance of KRAS‑mutated lung cancer cells. Oncol Rep 2022; 48:207. [PMID: 36222298 PMCID: PMC9579749 DOI: 10.3892/or.2022.8422] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Accepted: 08/02/2022] [Indexed: 11/29/2022] Open
Abstract
Kirsten rat sarcoma viral oncogene homolog (KRAS) aberrations frequently occur in patients with lung cancer. Oncogenic KRAS is characterized by excessive reactive oxygen species (ROS) accumulation, thus, ROS detoxification may contribute to KRAS‑driven lung tumorigenesis. In the present study, the influence of glutathione peroxidase 2 (GPX2) on malignant progression and cisplatin resistance of KRAS‑driven lung cancer was explored. The RNA sequencing data from TCGA lung cancer samples and GEO database were downloaded and analyzed. The effects of GPX2 on KRAS‑driven lung tumorigenesis were evaluated by western blotting, cell viability assay, soft agar assay, Transwell assay, tumor xenograft model, flow cytometry, BrdU incorporation assay, transcriptome RNA sequencing, luciferase reporter assay and RNA immunoprecipitation. In the present study, GPX2 was upregulated in patients with non‑small cell lung carcinoma (NSCLC), and positively correlated with poor overall survival. Ectopic GPX2 expression facilitated malignant progression of KRASG12C‑transformed BEAS‑2B cells. Moreover, GPX2 overexpression promoted growth, migration, invasion, tumor xenograft growth and cisplatin resistance of KRAS‑mutated NSCLC cells, while GPX2 knockdown exhibited the opposite effects. GPX2 overexpression reduced ROS accumulation and increased matrix metalloproteinase‑1 (MMP1) expression in KRAS‑mutated NSCLC cells. In addition, GPX2 was directly targeted by miR‑325‑3p, while MMP1 knockdown or miR‑325‑3p overexpression partially abrogated the effects of GPX2 in NSCLC cells. In conclusion, the results indicated that GPX2 facilitated malignant progression and cisplatin resistance of KRAS‑driven lung cancer, and inhibition of GPX2 may be a feasible strategy for lung cancer treatment, particularly in patients with active KRAS mutations.
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Affiliation(s)
- Mei Wang
- Department of Laboratory Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, P.R. China
| | - Xu Chen
- Department of Cardiothoracic Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, P.R. China
| | - Guang Fu
- Department of Cardiothoracic Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, P.R. China
| | - Mingjian Ge
- Department of Cardiothoracic Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, P.R. China
- Correspondence to: Dr Mingjian Ge, Department of Cardiothoracic Surgery, The First Affiliated Hospital of Chongqing Medical University, 1 Youyi Road, Yuzhong, Chongqing 400016, P.R. China, E-mail:
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Ren Z, Liang H, Galbo PM Jr, Dharmaratne M, Kulkarni AS, Fard AT, Aoun ML, Martinez-Lopez N, Suyama K, Benard O, Zheng W, Liu Y, Albanese J, Zheng D, Mar JC, Singh R, Prystowsky MB, Norton L, Hazan RB. Redox signaling by glutathione peroxidase 2 links vascular modulation to metabolic plasticity of breast cancer. Proc Natl Acad Sci U S A 2022; 119:e2107266119. [PMID: 35193955 DOI: 10.1073/pnas.2107266119] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/23/2021] [Indexed: 02/07/2023] Open
Abstract
Redox regulation of breast cancer underlies malignant progression. Loss of the antioxidant glutathione peroxidase 2 in breast cancer cells increases reactive oxygen species, thereby activating hypoxia inducible factor-α (HIF1α) signaling. This in turn causes vascular malfunction, resulting in hypoxia and metabolic heterogeneity. HIF1α suppresses oxidative phosphorylation and stimulates glycolysis (the Warburg effect) in most of the tumor, except for one cancer subpopulation, which was capable of using both metabolic modalities. Hence, adopting a hybrid metabolic state may allow tumor cells to survive under aerobic or hypoxic conditions, a vulnerability that may be exploited for therapeutic targeting by either metabolic or redox-based strategies. In search of redox mechanisms in breast cancer, we uncovered a striking role for glutathione peroxidase 2 (GPx2) in oncogenic signaling and patient survival. GPx2 loss stimulates malignant progression due to reactive oxygen species/hypoxia inducible factor-α (HIF1α)/VEGFA (vascular endothelial growth factor A) signaling, causing poor perfusion and hypoxia, which were reversed by GPx2 reexpression or HIF1α inhibition. Ingenuity Pathway Analysis revealed a link between GPx2 loss, tumor angiogenesis, metabolic modulation, and HIF1α signaling. Single-cell RNA analysis and bioenergetic profiling revealed that GPx2 loss stimulated the Warburg effect in most tumor cell subpopulations, except for one cluster, which was capable of oxidative phosphorylation and glycolysis, as confirmed by coexpression of phosphorylated-AMPK and GLUT1. These findings underscore a unique role for redox signaling by GPx2 dysregulation in breast cancer, underlying tumor heterogeneity, leading to metabolic plasticity and malignant progression.
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Lennicke C, Rahn J, Wickenhauser C, Lichtenfels R, Müller AS, Wessjohann LA, Kipp AP, Seliger B. Loss of epithelium-specific GPx2 results in aberrant cell fate decisions during intestinal differentiation. Oncotarget 2017; 9:539-552. [PMID: 29416634 PMCID: PMC5787487 DOI: 10.18632/oncotarget.22640] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Accepted: 10/27/2017] [Indexed: 01/07/2023] Open
Abstract
The selenoprotein glutathione peroxidase 2 (GPx2) is expressed in the epithelium of the gastrointestinal tract, where it is thought to be involved in maintaining mucosal homeostasis. To gain novel insights into the role of GPx2, proteomic profiles of colonic tissues either derived from wild type (WT) or GPx2 knockout (KO) mice, maintained under selenium (Se) deficiency or adequate Se supplementation conditions were established and analyzed. Amongst the panel of differentially expressed proteins, the calcium-activated chloride channel regulator 1 (CLCA1) was significantly down-regulated in GPx2 KO versus WT mice regardless of the given Se status. Moreover, transcript levels of the isoforms CLCA2 and CLCA3 showed a similar expression pattern. In the intestine, CLCA1 is usually restricted to mucin-producing goblet cells. However, although -SeKO mice had the highest numbers of goblet cells as confirmed by significantly enhanced mRNA expression levels of the goblet cell marker mucin-2, the observed expression pattern suggests that GPx2 KO goblet cells might be limited in synthesizing CLCA1. Furthermore, transcript levels of differentiation markers such as chromogranin-1 (Chga) for enteroendocrine cells and leucine-rich repeat-containing G-protein coupled receptor 5 (Lgr5) for stem cells were also downregulated in GPx2 KO mice. Moreover, this was accompanied by a downregulation of the mRNA expression levels of the intestinal hormones glucagon-like peptide 1 (Glp1), ghrelin (Ghrl) and somatostatin (Sst). Thus, it seems that GPx2 might be important for the modulation of cell fate decisions in the murine intestinal epithelium.
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Affiliation(s)
- Claudia Lennicke
- Institute of Medical Immunology, Martin Luther University Halle-Wittenberg, 06112 Halle (Saale), Germany
| | - Jette Rahn
- Institute of Medical Immunology, Martin Luther University Halle-Wittenberg, 06112 Halle (Saale), Germany
| | - Claudia Wickenhauser
- Institute of Pathology, Martin Luther University Halle-Wittenberg, 06112 Halle (Saale), Germany
| | - Rudolf Lichtenfels
- Institute of Medical Immunology, Martin Luther University Halle-Wittenberg, 06112 Halle (Saale), Germany
| | | | - Ludger A Wessjohann
- Department of Bioorganic Chemistry, Leibniz-Institute of Plant Biochemistry, 06120 Halle (Saale), Germany
| | - Anna P Kipp
- Institute of Nutrition, Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Barbara Seliger
- Institute of Medical Immunology, Martin Luther University Halle-Wittenberg, 06112 Halle (Saale), Germany
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Liu T, Kan XF, Ma C, Chen LL, Cheng TT, Zou ZW, Li Y, Cao FJ, Zhang WJ, Yao J, Li PD. GPX2 overexpression indicates poor prognosis in patients with hepatocellular carcinoma. Tumour Biol 2017. [PMID: 28635398 DOI: 10.1177/1010428317700410] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Glutathione peroxidase 2 has important role of tumor progression in lots of carcinomas, yet little is known about the prognosis of glutathione peroxidase 2 in hepatocellular carcinoma. Glutathione peroxidase 2 expression was assessed by immunohistochemistry in hepatocellular carcinoma tissues. The association between glutathione peroxidase 2 expression with clinicopathological/prognostic value was examined. Glutathione peroxidase 2 overexpression was correlated with alpha-fetoprotein level, larger tumor, BCLC stage, and tumor recurrence. Kaplan-Meier analysis showed that glutathione peroxidase 2 was an independent predictor for overall survival and time to recurrence. glutathione peroxidase 2 overexpression was correlated with poor prognosis in patient subgroups stratified by tumor size, differentiation, tumor-node-metastasis, and BCLC stage. Moreover, stratified analysis showed that tumor-node-metastasis stage-I patients with high glutathione peroxidase 2 expression had poor prognosis than those with low glutathione peroxidase 2 expression. Additionally, combination of glutathione peroxidase 2 and serum alpha-fetoprotein was correlated with prognosis in hepatocellular carcinoma. In conclusion, glutathione peroxidase 2 overexpression contributes to poor prognosis of hepatocellular carcinoma patients and helps to identify the high-risk hepatocellular carcinoma patients.
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Affiliation(s)
- Ting Liu
- 1 Department of Infectious Diseases, Institute of Infection and Immunology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xue-Feng Kan
- 2 Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Charlie Ma
- 3 The Department of Radiation Oncology, Fox Chase Cancer Center, Philadelphia, PA, USA
| | - Li-Li Chen
- 3 The Department of Radiation Oncology, Fox Chase Cancer Center, Philadelphia, PA, USA
| | - Tian-Tian Cheng
- 4 Affiliated Cancer Hospital and Institute of Guangzhou Medical University, Guangzhou, China
| | - Zhen-Wei Zou
- 5 Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yong Li
- 6 Cancer Center, Renmin Hospital, Hubei University of Medicine, Shiyan, China
| | - Feng-Jun Cao
- 6 Cancer Center, Renmin Hospital, Hubei University of Medicine, Shiyan, China
| | - Wen-Jie Zhang
- 7 Department of Pathology, Shihezi University School of Medicine, Shihezi, China
| | - Jing Yao
- 5 Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Pin-Dong Li
- 5 Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Fujii Y, Segawa R, Kimura M, Wang L, Ishii Y, Yamamoto R, Morita R, Mitsumori K, Shibutani M. Inhibitory effect of α-lipoic acid on thioacetamide-induced tumor promotion through suppression of inflammatory cell responses in a two-stage hepatocarcinogenesis model in rats. Chem Biol Interact 2013; 205:108-18. [PMID: 23830814 DOI: 10.1016/j.cbi.2013.06.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [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: 11/29/2012] [Revised: 03/31/2013] [Accepted: 06/17/2013] [Indexed: 11/25/2022]
Abstract
To investigate the protective effect of α-lipoic acid (a-LA) on the hepatocarcinogenic process promoted by thioacetamide (TAA), we used a two-stage liver carcinogenesis model in N-diethylnitrosamine (DEN)-initiated and TAA-promoted rats. We examined the modifying effect of co-administered a-LA on the liver tissue environment surrounding preneoplastic hepatocellular lesions, with particular focus on hepatic macrophages and the mechanism behind the decrease in apoptosis of cells surrounding preneoplastic hepatocellular lesions during the early stages of hepatocellular tumor promotion. TAA increased the number and area of glutathione S-transferase placental form (GST-P)(+) liver cell foci and the numbers of proliferating and apoptotic cells in the liver. Co-administration with a-LA suppressed these effects. TAA also increased the numbers of ED2(+), cyclooxygenase-2(+), and heme oxygenase-1(+) hepatic macrophages as well as the number of CD3(+) lymphocytes. These effects were also suppressed by a-LA. Transcript levels of some inflammation-related genes were upregulated by TAA and downregulated by a-LA in real-time RT-PCR analysis. Outside the GST-P(+) foci, a-LA reduced the numbers of apoptotic cells, active caspase-8(+) cells and death receptor (DR)-5(+) cells. These results suggest that hepatic macrophages producing proinflammatory factors may be activated in TAA-induced tumor promotion. a-LA may suppress tumor-promoting activity by suppressing the activation of these macrophages and the subsequent inflammatory responses. Furthermore, a-LA may suppress tumor-promoting activity by suppressing the DR5-mediated extrinsic pathway of apoptosis and the subsequent regeneration of liver cells outside GST-P(+) foci.
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Key Words
- 8-OHdG
- 8-hydroxydeoxyguanosine
- Aldh1a1
- Apoptosis
- B-cell CLL/lymphoma 2
- BNF
- Bax
- Bcl2
- Bcl2-associated X protein
- Bcl2-like 1
- Bcl2l1
- CMD
- Casp
- Cd4
- Cd4 molecule
- Cd8a
- Cd8a molecule
- Col1a1
- Cox-2
- Cu
- Cx3cl1
- Cxcl10
- DAB
- DEN
- DR5
- Death receptor 5 (DR5)
- EMIQ
- Fadd
- Fas (TNFRSF6)-associated via death domain
- Fe
- GST-P
- Gpx2
- Gstm1
- HO-1
- Hprt
- Il1b
- Il4
- Inflammation
- Liver tumor promotion
- Mapk
- Mmp
- N-diethylnitrosamine
- NAD(P)H dehydrogenase, quinone 1
- Nfe2l2
- Nqo1
- PBS
- PCNA
- Ptgs2
- ROS
- Serpine1
- TAA
- TBARS
- TRAIL
- TUNEL
- Tgfb2
- Thioacetamide (TAA)
- Tnf
- Tnfrsf10b
- Tnfsf10
- Txn1
- a-LA
- aldehyde dehydrogenase family 1 member A1
- caspase
- chemokine (C-X-C motif) ligand 10
- chemokine (C-X3-C motif) ligand 1
- choline-methionine-deficient diet
- collagen, type I, alpha 1
- copper
- cyclooxygenase 2
- death receptor 5
- diaminobenzidine
- enzymatically modified isoquercitrin
- glutathione S-transferase mu 1
- glutathione S-transferase placental form
- glutathione peroxidase 2
- heme oxygenase-1
- hypoxanthine guanine phosphoribosyl transferase
- interleukin 1 beta
- interleukin 4
- iron
- matrix metalloproteinase
- mitogen activated protein kinase
- nuclear factor, erythroid derived 2, like 2
- phosphate buffered solution
- proliferating cell nuclear antigen
- prostaglandin-endoperoxide synthase 2
- reactive oxygen species
- serine (or cysteine) peptidase inhibitor, clade E, member 1
- terminal deoxynucleotidyl transferase-mediated nick end labeling
- thioacetamide
- thiobarbituric acid-reactive substances
- thioredoxin 1
- transforming growth factor, beta 2
- tumor necrosis factor
- tumor necrosis factor (ligand) superfamily, member 10
- tumor necrosis factor receptor superfamily, member 10b
- tumor necrosis factor-related apoptosis-inducing ligand
- α-Lipoic acid (a-LA)
- α-lipoic acid
- β-naphthoflavone
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Affiliation(s)
- Yuta Fujii
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan
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