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Ouyang J, Feng Y, Zhang Y, Liu Y, Li S, Wang J, Tan L, Zou L. Integration of metabolomics and transcriptomics reveals metformin suppresses thyroid cancer progression via inhibiting glycolysis and restraining DNA replication. Biomed Pharmacother 2023; 168:115659. [PMID: 37864896 DOI: 10.1016/j.biopha.2023.115659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 09/26/2023] [Accepted: 10/04/2023] [Indexed: 10/23/2023] Open
Abstract
The anti-tumoral effects of metformin have been widely studied in several types of cancer, including thyroid cancer; however, the underlying molecular mechanisms remain poorly understood. As an oral hypoglycemic drug, metformin facilitates glucose catabolism and disrupts metabolic homeostasis. Metabolic reprogramming, particularly cellular glucose metabolism, is an important characteristic of malignant tumors. This study aimed to explore the therapeutic effects of metformin in thyroid cancer and the underlying metabolic mechanism. In the present study, it was shown that metformin reduced cell viability, invasion, migration, and EMT, and induced apoptosis and cell cycle G1 phase arrest in thyroid cancer. Transcriptome analysis demonstrated that the differentially expressed genes induced by metformin were involved in several signaling pathways including apoptosis singling pathways, TGF-β signaling, and cell cycle regulation in human thyroid cancer cell lines. In addition, the helicase activity of the CDC45-MCM2-7-GINS complex and DNA replication related genes such as RPA2, RAD51, and PCNA were downregulated in metformin-treated thyroid cancer cells. Moreover, metabolomics analysis showed that metformin-induced significant alterations in metabolic pathways such as glutathione metabolism and polyamine synthesis. Integrative analysis of transcriptomes and metabolomics revealed that metformin suppressed glycolysis by downregulating the key glycolytic enzymes LDHA and PKM2 and upregulating IDH1 expression in thyroid cancer. Furthermore, the anti-tumor role of metformin in thyroid cancer in vivo was shown. Together these results show that metformin plays an anti-tumor role by inhibiting glycolysis and restraining DNA replication in thyroid cancer.
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Affiliation(s)
- Jielin Ouyang
- The First Affiliated Hospital of Hunan Normal University (Hunan Provincial People's Hospital), Changsha, Hunan 410005, PR China; Central Laboratory of Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, Hunan 410005, PR China; Key Laboratory of Molecular Epidemiology of Hunan Province, Hunan Normal University, Changsha, Hunan 410013, PR China
| | - Yang Feng
- The First Affiliated Hospital of Hunan Normal University (Hunan Provincial People's Hospital), Changsha, Hunan 410005, PR China; Central Laboratory of Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, Hunan 410005, PR China; Key Laboratory of Molecular Epidemiology of Hunan Province, Hunan Normal University, Changsha, Hunan 410013, PR China
| | - Yiyuan Zhang
- Central Laboratory of Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, Hunan 410005, PR China
| | - Yarong Liu
- The First Affiliated Hospital of Hunan Normal University (Hunan Provincial People's Hospital), Changsha, Hunan 410005, PR China; Central Laboratory of Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, Hunan 410005, PR China; Key Laboratory of Molecular Epidemiology of Hunan Province, Hunan Normal University, Changsha, Hunan 410013, PR China
| | - Shutong Li
- The First Affiliated Hospital of Hunan Normal University (Hunan Provincial People's Hospital), Changsha, Hunan 410005, PR China; Central Laboratory of Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, Hunan 410005, PR China; Key Laboratory of Molecular Epidemiology of Hunan Province, Hunan Normal University, Changsha, Hunan 410013, PR China
| | - Jingjing Wang
- The First Affiliated Hospital of Hunan Normal University (Hunan Provincial People's Hospital), Changsha, Hunan 410005, PR China; Central Laboratory of Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, Hunan 410005, PR China
| | - Lihong Tan
- The First Affiliated Hospital of Hunan Normal University (Hunan Provincial People's Hospital), Changsha, Hunan 410005, PR China; Central Laboratory of Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, Hunan 410005, PR China.
| | - Lianhong Zou
- The First Affiliated Hospital of Hunan Normal University (Hunan Provincial People's Hospital), Changsha, Hunan 410005, PR China; Central Laboratory of Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, Hunan 410005, PR China.
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Fang Y, Zhao T, Ni H, Li Y, Zhu Y, Gao R, Zhang L, Jia Z, Chen G. USP11 exacerbates neuronal apoptosis after traumatic brain injury via PKM2-mediated PI3K/AKT signaling pathway. Brain Res 2023; 1807:148321. [PMID: 36898475 DOI: 10.1016/j.brainres.2023.148321] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 03/05/2023] [Accepted: 03/06/2023] [Indexed: 03/12/2023]
Abstract
Ubiquitin-specific protease 11 (USP11) is a ubiquitin-specific protease involved in the regulation of protein ubiquitination. However, its role in traumatic brain injury (TBI) remains unclear. This experiment suggests that USP11 is possibly involved in regulating neuronal apoptosis in TBI. Therefore, we use precision impactor device to established a TBI rat model and assayed the role of USP11 by overexpressing and inhibiting USP11. We found that Usp11 expression increased after TBI. In addition, we hypothesized that pyruvate kinase M2 (PKM2) is a potential USP11 target and experimentally confirmed that upregulation of Usp11 increased Pkm2 expression. Furthermore, elevated USP11 levels exacerbate blood-brain barrier damage, brain edema, and neurobehavioral impairment and cause apoptosis induction through Pkm2 upregulation. Moreover, we hypothesize that PKM2-induced neuronal apoptosis is mediated by the phosphoinositide 3-kinase (PI3K)/protein kinase B (AKT) signaling pathway. Our findings were confirmed by changes in Pi3k and Akt expression with Usp11 upregulation and downregulation and PKM2 inhibition. In conclusion, our findings show that USP11 exacerbates injury in TBI through PKM2 and causes neurological impairment and neuronal apoptosis through the PI3K/AKT signaling pathway.
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Affiliation(s)
- Yiling Fang
- Department of General Practice, The Affiliated Zhangjiagang Hospital of Soochow University, Suzhou, China
| | - Tianheng Zhao
- Department of Neurosurgery and Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Haibo Ni
- Department of Neurosurgery, The Affiliated Zhangjiagang Hospital of Soochow University, Suzhou, China
| | - Yajun Li
- Department of Orthopedics, Zhangjiagang TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Suzhou, China
| | - Yongkui Zhu
- Department of Intensive Care Unit, The Affiliated Zhangjiagang Hospital of Soochow University, Suzhou, China
| | - Rong Gao
- Department of Neurosurgery, The Affiliated Zhangjiagang Hospital of Soochow University, Suzhou, China
| | - Li Zhang
- Department of Neurosurgery, The Affiliated Zhangjiagang Hospital of Soochow University, Suzhou, China.
| | - Zhenyu Jia
- Department of General Practice, The Affiliated Zhangjiagang Hospital of Soochow University, Suzhou, China.
| | - Gang Chen
- Department of Neurosurgery and Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, China
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Zhao H, Song L. TKP, a Serine Protease from Trichosanthes kirilowii, Inhibits Cell Proliferation by Blocking Aerobic Glycolysis in Hepatocellular Carcinoma Cells. Nutr Cancer 2021; 74:333-345. [PMID: 33544002 DOI: 10.1080/01635581.2021.1882508] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
AIM Hepatocellular carcinoma (HCC) is one of the most common malignant tumors. TKP is a serine protease extracted from the fruit of Trichosanthes kirilowii. We investigated the impact of TKP on the proliferation of HCC cells and its underlying mechanisms. METHODS Bel-7402 and HepG2 cell viability and colony formation capacity were evaluated using MTT and colony formation assays, respectively. Glucose uptake and lactate production were determined using glucose and lactate assay kits. The mRNA expressions of GLUT1, PDK, LDHA, PKM2, β-catenin, c-Myc, and HnRNPA1 were assessed using real-time PCR analysis. Protein expression and the distribution of PKM2 were examined by western blot assay. RESULTS TKP significantly inhibited Bel-7402 and HepG2 cell survival and colony formation capacity. The IC50 values of TKP against Bel-7402 and HepG2 cells were 31.37 ± 1.33 and 27.41 ± 0.81 μg/mL, respectively. TKP restrained aerobic glycolysis. TKP decreased the expression level, nuclear protein level and pyruvate kinase activity of PKM2, whereas overexpression PKM2 reversed the suppression of TKP on glycolysis. TKP inhibited the β-catenin/c-Myc/HnRNPA1 pathway. LiCl treatment partly rescued the inhibitory effects of TKP on PKM2, aerobic glycolysis, and cell viability. CONCLUSION TKP suppresses HCC cell proliferation via blocking PKM2-dependent glycolysis, which is regulated by inhibiting the β-catenin/c-Myc/HnRNPA1 pathway.
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Affiliation(s)
- Hong Zhao
- Institute of Biotechnology, Key Laboratory of Chemical Biology and Molecular Engineering of National Ministry of Education, Shanxi University, Taiyuan, China
| | - Li Song
- Institute of Biotechnology, Key Laboratory of Chemical Biology and Molecular Engineering of National Ministry of Education, Shanxi University, Taiyuan, China
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Shenmai Injection Supresses Glycolysis and Enhances Cisplatin Cytotoxicity in Cisplatin-Resistant A549/DDP Cells via the AKT-mTOR-c-Myc Signaling Pathway. BIOMED RESEARCH INTERNATIONAL 2020; 2020:9243681. [PMID: 32685545 PMCID: PMC7327568 DOI: 10.1155/2020/9243681] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 06/03/2020] [Accepted: 06/09/2020] [Indexed: 02/07/2023]
Abstract
Tumor cells, especially drug-resistant cells, predominately support growth by glycolysis even under the condition of adequate oxygen, which is known as the Warburg effect. Glucose metabolism reprogramming is one of the main factors causing tumor resistance. Previous studies on Shenmai injection (SMI), a Chinese herbal medicine, have shown enhanced efficacy in the treatment of tumors in combination with chemotherapy drugs, but the mechanism is not clear. In this study, we investigated the effect of SMI combined with cisplatin on cisplatin-resistant lung adenocarcinoma A549/DDP cells. Our results showed that cisplatin-resistant A549/DDP cells exhibited increased glucose consumption, lactate production, and expression levels of key glycolytic enzymes, including hexokinase 2 (HK2), pyruvate kinase M1/2 (PKM1/2), pyruvate kinase M2 (PKM2), glucose transporter 1 (GLUT1), and lactate dehydrogenase A (LDHA), compared with cisplatin-sensitive A549 cells. SMI combined with cisplatin in A549/DDP cells, led to significantly lower expression levels of key glycolytic enzymes, such as HK2, PKM1/2, GLUT1, and pyruvate dehydrogenase (PDH). In addition, we found that the combination of SMI and cisplatin could inhibit cell proliferation and promote apoptosis by reducing the expression levels of p-Akt, p-mTOR, and c-Myc, and then, it reduced the glycolysis level. These results suggest that SMI enhances the antitumor effect of cisplatin via glucose metabolism reprogramming. Therefore, the combination of SMI and cisplatin may be a potential therapeutic strategy to treat cisplatin-resistant nonsmall cell lung cancer.
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The molecular mechanisms of LncRNA-correlated PKM2 in cancer metabolism. Biosci Rep 2019; 39:220807. [PMID: 31654067 PMCID: PMC6851521 DOI: 10.1042/bsr20192453] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 09/27/2019] [Accepted: 10/01/2019] [Indexed: 12/17/2022] Open
Abstract
Reprogrammed metabolism is an important hallmark of cancer cells. Pyruvate kinase (PK) is one of the major rate-limiting enzymes in glucose metabolism. The M2 isoform of PK (PKM2), is considered to be an important marker of metabolic reprogramming and one of the key enzymes. Recently, through the continuous development of genome-wide analysis and functional studies, accumulating evidence has demonstrated that long non-coding RNAs (LncRNAs) play vital regulatory roles in cancer progression by acting as either potential oncogenes or tumor suppressors. Furthermore, several studies have shown that up-regulation of PKM2 in cancer tissues is associated with LncRNAs expression and patient survival. Thus, scientists have begun to unveil the mechanism of LncRNA-associated PKM2 in cancer metabolic progression. Based on these novel findings, in this mini-review, we summarize the detailed molecular mechanisms of LncRNA related to PKM2 in cancer metabolism. We expect that this work will promote a better understanding of the molecular mechanisms of PKM2, and provide a profound potential for targeting PKM2 to treat tumors.
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Gómez-Escudero J, Clemente C, García-Weber D, Acín-Pérez R, Millán J, Enríquez JA, Bentley K, Carmeliet P, Arroyo AG. PKM2 regulates endothelial cell junction dynamics and angiogenesis via ATP production. Sci Rep 2019; 9:15022. [PMID: 31636306 PMCID: PMC6803685 DOI: 10.1038/s41598-019-50866-x] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 09/19/2019] [Indexed: 12/17/2022] Open
Abstract
Angiogenesis, the formation of new blood vessels from pre-existing ones, occurs in pathophysiological contexts such as wound healing, cancer, and chronic inflammatory disease. During sprouting angiogenesis, endothelial tip and stalk cells coordinately remodel their cell-cell junctions to allow collective migration and extension of the sprout while maintaining barrier integrity. All these processes require energy, and the predominant ATP generation route in endothelial cells is glycolysis. However, it remains unclear how ATP reaches the plasma membrane and intercellular junctions. In this study, we demonstrate that the glycolytic enzyme pyruvate kinase 2 (PKM2) is required for sprouting angiogenesis in vitro and in vivo through the regulation of endothelial cell-junction dynamics and collective migration. We show that PKM2-silencing decreases ATP required for proper VE-cadherin internalization/traffic at endothelial cell-cell junctions. Our study provides fresh insight into the role of ATP subcellular compartmentalization in endothelial cells during angiogenesis. Since manipulation of EC glycolysis constitutes a potential therapeutic intervention route, particularly in tumors and chronic inflammatory disease, these findings may help to refine the targeting of endothelial glycolytic activity in disease.
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Affiliation(s)
- Jesús Gómez-Escudero
- Vascular Pathophysiology, Centro Nacional de Investigaciones Cardiovasculares (CNIC). Melchor Fernández Almagro 3, 28029, Madrid, Spain
- Tumour Biology Department, Barts Cancer Institute, John´s Vane Centre, Queen Mary´s University of London. Charterhouse Sq, EC1M 6BQ, London, UK
| | - Cristina Clemente
- Vascular Pathophysiology, Centro Nacional de Investigaciones Cardiovasculares (CNIC). Melchor Fernández Almagro 3, 28029, Madrid, Spain
- Centro de Investigaciones Biológicas (CIB-CSIC). Ramiro de Maeztu 9, 28040, Madrid, Spain
| | - Diego García-Weber
- Centro de Biología Molecular Severo Ochoa, Consejo Superior de Investigaciones Científicas (CSIC), Universidad Autónoma de Madrid, 28049, Madrid, Spain
| | - Rebeca Acín-Pérez
- Myocardial Pathology Areas, Centro Nacional de Investigaciones Cardiovasculares (CNIC). Melchor Fernández Almagro 3, 28029, Madrid, Spain
| | - Jaime Millán
- Centro de Biología Molecular Severo Ochoa, Consejo Superior de Investigaciones Científicas (CSIC), Universidad Autónoma de Madrid, 28049, Madrid, Spain
| | - José A Enríquez
- Myocardial Pathology Areas, Centro Nacional de Investigaciones Cardiovasculares (CNIC). Melchor Fernández Almagro 3, 28029, Madrid, Spain
| | - Katie Bentley
- Computational Biology Laboratory, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
- Cellular Adaptive Behaviour Laboratory, Rudbeck Laboratories, Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Peter Carmeliet
- Laboratory of Angiogenesis and Vascular Metabolism, Center for Cancer Biology, Vlaams Instituut voor Biotechnologie (VIB), B-3000, Leuven, Belgium
- Laboratory of Angiogenesis and Vascular Metabolism, Center for Cancer Biology, Department of Oncology, University of Leuven, B-3000, Leuven, Belgium
- State Key Laboratory of Ophthalmology, Zhongsan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, China
| | - Alicia G Arroyo
- Vascular Pathophysiology, Centro Nacional de Investigaciones Cardiovasculares (CNIC). Melchor Fernández Almagro 3, 28029, Madrid, Spain.
- Centro de Investigaciones Biológicas (CIB-CSIC). Ramiro de Maeztu 9, 28040, Madrid, Spain.
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Liang W, Zhang Y, Song L, Li Z. 2,3'4,4',5-Pentachlorobiphenyl induces hepatocellular carcinoma cell proliferation through pyruvate kinase M2-dependent glycolysis. Toxicol Lett 2019; 313:108-119. [PMID: 31251971 DOI: 10.1016/j.toxlet.2019.06.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Revised: 05/24/2019] [Accepted: 06/21/2019] [Indexed: 02/06/2023]
Abstract
Polychlorinated biphenyls (PCBs) are classic persistent organic pollutants (POPs) and are associated with the progression of many cancers, including liver cancer. The present study investigated the effect of 2,3'4,4',5-pentachlorobiphenyl (PCB118) on hepatocellular carcinoma cell proliferation and its underlying mechanisms. The results indicated that PCB118 exposure promotes the proliferation and glycolysis of hepatocellular carcinoma SMMC-7721 cells. Moreover, PCB118 exposure increased the expression level of pyruvate kinase M2 (PKM2) and its nuclear translocation, whereas treatment with PKM2 shRNA suppressed the induction of cell proliferation and glycolysis by PCB118. PCB118 stimulated reactive oxygen species (ROS) production by activating nicotinamide adenine dinucleotide phosphate (NADPH) oxidase. Treatment with the antioxidants N-acetyl-L-cysteine (NAC) and superoxide dismutase (SOD) prevented PCB118-induced effects on PKM2, cell proliferation and glycolysis. Furthermore, we found that PCB118 activated NADPH oxidase through the aryl hydrocarbon receptor (AhR) in SMMC-7721 cells. Consistently, treatment with AhR shRNA suppressed PCB118-induced effects on PKM2, cell proliferation and glycolysis. Overall, these results indicated that PCB118 promotes HCC cell proliferation via PKM2-dependent upregulation of glycolysis, which is mediated by AhR/NADPH oxidase-induced ROS production.
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Affiliation(s)
- Wenli Liang
- Institute of Biotechnology, Key Laboratory of Chemical Biology and Molecular Engineering of National Ministry of Education, Shanxi University, Taiyuan 030006, China
| | - Yuting Zhang
- Institute of Biotechnology, Key Laboratory of Chemical Biology and Molecular Engineering of National Ministry of Education, Shanxi University, Taiyuan 030006, China
| | - Li Song
- Institute of Biotechnology, Key Laboratory of Chemical Biology and Molecular Engineering of National Ministry of Education, Shanxi University, Taiyuan 030006, China.
| | - Zhuoyu Li
- Institute of Biotechnology, Key Laboratory of Chemical Biology and Molecular Engineering of National Ministry of Education, Shanxi University, Taiyuan 030006, China
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Akbarzadeh Khiavi M, Safary A, Aghanejad A, Barar J, Rasta SH, Golchin A, Omidi Y, Somi MH. Enzyme-conjugated gold nanoparticles for combined enzyme and photothermal therapy of colon cancer cells. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.04.019] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Liu Y, Wu H, Mei Y, Ding X, Yang X, Li C, Deng M, Gong J. Clinicopathological and prognostic significance of PKM2 protein expression in cirrhotic hepatocellular carcinoma and non-cirrhotic hepatocellular carcinoma. Sci Rep 2017; 7:15294. [PMID: 29127353 PMCID: PMC5681582 DOI: 10.1038/s41598-017-14813-y] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Accepted: 10/16/2017] [Indexed: 12/15/2022] Open
Abstract
Pyruvate kinase M2 (PKM2), a key protein in glucose and lipid metabolism, has been reported to be related to carcinogenesis in various malignancies. However, its roles in hepatocellular carcinoma with cirrhotic liver (CL) and hepatocellular carcinoma with non-cirrhoticliver (NCL) haves not been investigated. In our study western bloting, qRT-PCR and immunohistochemistry were performed to evaluate the clinical significance of PKM2 protein expression in CL and NCL. The results revealed that PKM2 protein expression was significantly higher in HCC tissues than in their adjacent non-tumour tissues. The high expression rates of PKM2 were more frequently noted in CL (45. 6%) than in NCL (31. 9%) tissues. High PKM2 expression in CL and NCL tissues was significantly associated with vascular invasion (P = 0.002 and P = 0.004, respectively) and intrahepatic metastasis (P < 0.001 and P = 0.019, respectively). Importantly, Kaplan-Meier survival analysis showed that the disease-specific survival (DSS) and recurrence-free survival (RFS) were lower in CL with high PKM2 expression than in NCL with high PKM2 expression (P = 0.003 and P = 0.003, respectively). Overall, high PKM2 expression was more frequently found in CL than in NCL, and PKM2 overexpression was associated with poor survival rates in patients with CL and NCL.
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Affiliation(s)
- Yan Liu
- Department of Geriatric gastroenterology, the Fifth People's Hospital of Chengdu, Sichuan, 611130, China
| | - Hao Wu
- Department of Hepatobiliary Surgery, the Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Ying Mei
- Department of Hepatobiliary Surgery, the Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Xiong Ding
- Department of Hepatobiliary Surgery, the Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Xiaoli Yang
- Department of Hepatobiliary Surgery, the Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Changping Li
- Department of gastroenterology, the Affiliated Hospital of Southwest Medical University, Luzhou, 646000, China.
| | - Mingming Deng
- Department of gastroenterology, the Affiliated Hospital of Southwest Medical University, Luzhou, 646000, China.
| | - Jianping Gong
- Department of Hepatobiliary Surgery, the Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China.
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Shao BZ, Ke P, Xu ZQ, Wei W, Cheng MH, Han BZ, Chen XW, Su DF, Liu C. Autophagy Plays an Important Role in Anti-inflammatory Mechanisms Stimulated by Alpha7 Nicotinic Acetylcholine Receptor. Front Immunol 2017; 8:553. [PMID: 28559895 PMCID: PMC5432615 DOI: 10.3389/fimmu.2017.00553] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Accepted: 04/25/2017] [Indexed: 12/14/2022] Open
Abstract
Alpha7 nicotinic acetylcholine receptor (α7nAChR) has been reported to alleviate neuroinflammation. Here, we aimed to determine the role of autophagy in α7nAChR-mediated inhibition of neuroinflammation and its underlying mechanism. Experimental autoimmune encephalomyelitis (EAE) mice and lipopolysaccharide-stimulated BV2 microglia were used as in vivo and in vitro models of neuroinflammation, respectively. The severity of EAE was evaluated with neurological scoring. Autophagy-related proteins (Beclin 1, LC3-II/I, p62/SQSTM1) were detected by immunoblot. Autophagosomes were observed using transmission electron microscopy and tandem fluorescent mRFP-GFP-LC3 plasmid was applied to test autophagy flux. The mRNA levels of interleukin-6 (IL-6), IL-1β, IL-18, and tumor necrosis factor-α (TNF-α) were detected by real-time PCR. We used 3-methyladenine (3-MA) and autophagy-related gene 5 small interfering RNA (Atg5 siRNA) to block autophagy in vivo and in vitro, respectively. Activating α7nAChR with PNU282987 ameliorates EAE severity and spinal inflammatory infiltration in EAE mice. PNU282987 treatment also enhanced monocyte/microglia autophagy (Beclin 1, LC3-II/I ratio, p62/SQSTM1, colocalization of CD45- or CD68-positive cells with LC3) both in spinal cord and spleen from EAE mice. The beneficial effects of PNU282987 on EAE mice were partly abolished by 3-MA, an autophagy inhibitor. In vitro, PNU282987 treatment increased autophagy and promoted autophagy flux. Blockade of autophagy by Atg5 siRNA or bafilomycin A1 attenuated the inhibitory effect of PNU282987 on IL-6, IL-1β, IL-18, and TNF-α mRNA. Our results demonstrate for the first time that activating α7nAChR enhances monocyte/microglia autophagy, which suppresses neuroinflammation and thus plays an alleviative role in EAE.
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Affiliation(s)
- Bo-Zong Shao
- Department of Pharmacology, Second Military Medical University, Shanghai, China
| | - Ping Ke
- Department of Pharmacology, Second Military Medical University, Shanghai, China
| | - Zhe-Qi Xu
- Department of Pharmacology, Second Military Medical University, Shanghai, China
| | - Wei Wei
- Institute of Quality and Standard for Agro-Products, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Ming-He Cheng
- Department of Pharmacology, Second Military Medical University, Shanghai, China
| | - Bin-Ze Han
- Department of Pharmacology, Second Military Medical University, Shanghai, China
| | - Xiong-Wen Chen
- Cardiovascular Research Center, Temple University School of Medicine, Philadelphia, PA, USA
| | - Ding-Feng Su
- Department of Pharmacology, Second Military Medical University, Shanghai, China
| | - Chong Liu
- Department of Pharmacology, Second Military Medical University, Shanghai, China
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11
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Song L, Guo L, Li Z. Molecular mechanisms of 3,3'4,4',5-pentachlorobiphenyl-induced epithelial-mesenchymal transition in human hepatocellular carcinoma cells. Toxicol Appl Pharmacol 2017; 322:75-88. [PMID: 28284859 DOI: 10.1016/j.taap.2017.03.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Revised: 02/28/2017] [Accepted: 03/04/2017] [Indexed: 02/07/2023]
Abstract
Polychlorinated biphenyls (PCBs) are classic persistent organic pollutants (POPs). Many studies have found a positive association between the progression of hepatocellular carcinoma (HCC) and PCBs exposure. However, the influence of PCBs on epithelial-mesenchymal transition (EMT) of HCC remains to be unclear. In this study, we explored the effect of PCB126 on EMT in HCC cells and its underlying mechanisms. The data showed that PCB126, exposing both Bel-7402 and SMMC-7721 cells for 48h, promoted EMT that was demonstrated by E-cadherin repression, up-regulation of N-cadherin and vimentin, and morphological alteration. We found that signal transducer and activator of transcription 3 (STAT3)/Snail1 signaling was activated after PCB126 exposure, and the addition of STAT3 inhibitor WP1066 blocked PCB126-induced down-regulation of E-cadherin as well as up-regulation of N-cadherin and vimentin. Moreover, PCB126 exposure increased pyruvate kinase M2 (PKM2) expression and its nuclear translocation, whereas treatment with PKM2 shRNA suppressed the activation of STAT3/Snail1 signaling and the alternation of EMT-related molecules (E-cadherin, N-cadherin and vimentin). Furthermore, this study indicated estrogen receptor (ER) and aryl hydrocarbon receptor (AhR) were involved in PCB126-induced effects on PKM2, STAT3/Snail1 signaling and EMT by according treatment using ER inhibitor ICI and AhR shRNA. Notably, PCB126-increased reactive oxygen species (ROS) production via AhR is associated with activation of PKM2/STAT3/Snail1 cascades and contributes to EMT. Taken together, these results indicated that PCB126 promotes EMT process of HCC cells via PKM2/STAT3/Snail1 signaling which is mediated by ER and AhR.
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Affiliation(s)
- Li Song
- Institute of Biotechnology, Key Laboratory of Chemical Biology and Molecular Engineering of National Ministry of Education, Shanxi University, Taiyuan 030006, China
| | - Linlin Guo
- Institute of Biotechnology, Key Laboratory of Chemical Biology and Molecular Engineering of National Ministry of Education, Shanxi University, Taiyuan 030006, China
| | - Zhuoyu Li
- Institute of Biotechnology, Key Laboratory of Chemical Biology and Molecular Engineering of National Ministry of Education, Shanxi University, Taiyuan 030006, China; College of Life Science, Zhejiang Chinese Medical University, Hangzhou 310053, China.
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Gjorgjieva M, Oosterveer MH, Mithieux G, Rajas F. Mechanisms by Which Metabolic Reprogramming in GSD1 Liver Generates a Favorable Tumorigenic Environment. JOURNAL OF INBORN ERRORS OF METABOLISM AND SCREENING 2016. [DOI: 10.1177/2326409816679429] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Affiliation(s)
- Monika Gjorgjieva
- Institut National de la Santé et de la Recherche Médicale, U1213 “Nutrition, Diabetes and the Brain”, Lyon, France
- Université de Lyon, Lyon, France
- Université Lyon 1, Villeurbanne, France
| | - Maaike H. Oosterveer
- Department of Pediatrics, Center for Liver, Digestive, and Metabolic Diseases, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Gilles Mithieux
- Institut National de la Santé et de la Recherche Médicale, U1213 “Nutrition, Diabetes and the Brain”, Lyon, France
- Université de Lyon, Lyon, France
- Université Lyon 1, Villeurbanne, France
| | - Fabienne Rajas
- Institut National de la Santé et de la Recherche Médicale, U1213 “Nutrition, Diabetes and the Brain”, Lyon, France
- Université de Lyon, Lyon, France
- Université Lyon 1, Villeurbanne, France
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Wang Y, Gao C, Zhang Y, Gao J, Teng F, Tian W, Yang W, Yan Y, Xue F. Visfatin stimulates endometrial cancer cell proliferation via activation of PI3K/Akt and MAPK/ERK1/2 signalling pathways. Gynecol Oncol 2016; 143:168-178. [PMID: 27473926 DOI: 10.1016/j.ygyno.2016.07.109] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Revised: 07/18/2016] [Accepted: 07/21/2016] [Indexed: 01/24/2023]
Abstract
OBJECTIVE Endometrial carcinoma is one of the most common malignancies of the female reproductive system, but the aetiology and pathogenesis are not well understood, although adipokines such as visfatin may be involved. Our study provides insight into the mechanism underlying the tumorigenic effects of visfatin in endometrial carcinoma. METHODS We investigated the effect of visfatin on endometrial carcinoma cell proliferation, cell cycle, and apoptosis using well-differentiated Ishikawa cells and poorly differentiated KLE cells. We also assessed the effect of visfatin on tumour growth in vivo. RESULTS Visfatin stimulated the proliferation of both Ishikawa and KLE cells, and visfatin treatment promoted G1/S phase progression and inhibited endometrial carcinoma cell apoptosis. Visfatin promoted endometrial carcinoma tumour growth in BALB/c-nu mice. Transplanted tumour tissues from an endometrial carcinoma mouse model were analysed using immunohistochemical staining, which revealed much stronger positive signals for Ki-67 with over-abundant visfatin. Western blot analysis revealed that insulin receptor (IR), insulin receptor substrate (IRS)1/2 and key components of the phosphoinositide 3-kinase (PI3K)/AKT and mitogen-activated protein kinase (MAPK)/extracellular signal-regulated kinase (ERK)1/2 signalling pathways were highly expressed in endometrial carcinoma cells exposed to visfatin. Treated cells showed increased C-MYC and cyclin D1 and reduced caspase-3 expression. The effects of visfatin on proliferation and apoptosis were abrogated by treatment with the PI3K inhibitor LY294002 and MEK inhibitor U0126. CONCLUSIONS Visfatin promotes the malignant progression of endometrial carcinoma via activation of IR and PI3K/Akt and MAPK/ERK signalling. Visfatin may serve as a therapeutic target in the treatment of endometrial carcinoma.
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Affiliation(s)
- Yingmei Wang
- Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin, China
| | - Chao Gao
- Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin, China
| | - Yanfang Zhang
- Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin, China
| | - Jinping Gao
- Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin, China
| | - Fei Teng
- Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin, China
| | - Wenyan Tian
- Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin, China
| | - Wen Yang
- Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin, China
| | - Ye Yan
- Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin, China
| | - Fengxia Xue
- Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin, China.
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Yan X, Song X, Wang Z. Construction of specific magnetic resonance imaging/optical dual-modality molecular probe used for imaging angiogenesis of gastric cancer. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2016; 45:399-403. [PMID: 27074993 DOI: 10.3109/21691401.2016.1167701] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The purpose of the study was to construct specific magnetic resonance imaging (MRI)/optical dual-modality molecular probe. Tumor-bearing animal models were established. MRI/optical dual-modality molecular probe was construed by coupling polyethylene glycol (PEG)-modified nano-Fe3O4 with specific targeted cyclopeptide GX1 and near-infrared fluorescent dyes Cy5.5. MRI/optical imaging effects of the probe were observed and the feasibility of in vivo double-modality imaging was discussed. It was found that, the double-modality probe was of high stability; tumor signal of the experimental group tended to be weak after injection of the probe, but rose to a level which was close to the previous level after 18 h (p > 0.05). We successively completed the construction of an ideal MRI/optical dual-modality molecular probe. MRI/optical dual-modality molecular probe which can selectively gather in gastric cancer is expected to be a novel probe used for diagnosing gastric cancer in the early stage.
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Affiliation(s)
- Xuejie Yan
- a Department of Spleen and Stomach Diseases , Hospital of Traditional Chinese Medicine , Yantai , Shandong , China
| | - Xiaoyan Song
- b Emergency Department , Hospital of Traditional Chinese Medicine , Yantai , Shandong , China
| | - Zhenbo Wang
- a Department of Spleen and Stomach Diseases , Hospital of Traditional Chinese Medicine , Yantai , Shandong , China
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