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Lipocalin 2 Reduces MET Levels by Inhibiting MEK/ERK Signaling to Inhibit Nasopharyngeal Carcinoma Cell Migration. Cancers (Basel) 2022; 14:cancers14225707. [PMID: 36428800 PMCID: PMC9688489 DOI: 10.3390/cancers14225707] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 11/15/2022] [Accepted: 11/18/2022] [Indexed: 11/23/2022] Open
Abstract
Nasopharyngeal carcinoma (NPC) is the most common cancer that occurs in the nasopharynx, and it is difficult to detect early. The main cause of death of NPC patients is cancer metastasis. Lipocalin 2 (LCN2) has been shown to be involved in a variety of carcinogenesis processes. Here, we aimed to study the role of LCN2 in NPC cells and determine its underlying mechanism. We found that LCN2 was expressed differently in NPC cell lines, namely HONE-1, NPC-39, and NPC-BM. The down-regulation of LCN2 levels by siRNA targeting LCN2 (siLCN2) increased cell migration and invasion in HONE-1 cells, while the up-regulation of LCN2 levels by transfection with the LCN2 expression plasmid decreased cell migration and invasion in NPC-BM cells. Furthermore, LCN2 levels negatively regulated the phosphorylation of MEK/ERK pathways. The treatment of the specific MEK/ERK inhibitor, U0126, reduced cell migration in HONE-1 cells, whereas the treatment of tBHQ, an ERK activator, enhanced cell migration in NPC-BM cells. Based on the bioinformatics data, there was a moderately negative correlation between LCN2 and MET in metastatic NPC tissues (r = -0.5946, p = 0.0022). Indeed, the manipulation of LCN2 levels negatively regulated MET levels in these NPC cells. The treatment of U0126 reduced siLCN2-increased MET levels, while the treatment of tBHQ enhanced LCN2-enhanced MET levels. Interestingly, the down-regulation of MET levels by siMET further decreased siLCN2-enhanced MET levels and cell migration. Therefore, LCN2 inhibits NPC cell migration by reducing MET levels through MEK/ERK signaling.
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2
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Zhang FY, Li X, Huang TT, Xiang ML, Sun LL, Sun ZL. LINC00839 knockdown restrains the metastatic behavior of nasopharyngeal carcinoma by sponging miR-454-3p. Aging (Albany NY) 2021; 13:26022-26033. [PMID: 34965215 PMCID: PMC8751606 DOI: 10.18632/aging.203792] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Accepted: 11/22/2021] [Indexed: 11/25/2022]
Abstract
Long intergenic non-coding RNA 00839 (LINC00839) has been verified as a pro-metastasis factor in malignancies. However, the significance of LINC00839 in nasopharyngeal carcinoma (NPC) has yet to be illuminated, as well as its underlying mechanism. Here, we disclosed that LINC00839 is highly expressed in NPC. Deletion of LINC00839 suppresses NPC cells rapid growth, invasive capacity and EMT in vitro. Besides, LINC00839 is identified as a "sponge" for miR-454-3p, and upregulation of LINC00839 reverses miR-454-3p-mediated inhibition of aggressiveness in NPC cells. Furthermore, the expression of cellular-mesenchymal epithelial transition factor (c-Met), the downstream target of miR-454-3p, is downregulated by LINC00839 knockdown in NPC cells. In vivo, LINC00839 knockdown retards the tumor growth of NPC cells in the xenografted mice model. Collectively, attenuation of LINC00839 expression attenuates the aggressive properties of NPC cells via directly sponging the miR-454-3p and regulating c-Met expression.
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Affiliation(s)
- Feng Ying Zhang
- Department of Otorhinolaryngology, Weifang Hospital of Traditional Chinese Medicine, Weifang, Shandong, China
| | - Xia Li
- Department of Anesthesiology, Weifang Hospital of Traditional Chinese Medicine, Weifang, Shandong, China
| | - Ting Ting Huang
- Department of Otorhinolaryngology, Weifang Hospital of Traditional Chinese Medicine, Weifang, Shandong, China
| | - Mei Ling Xiang
- Department of Otorhinolaryngology, Weifang Hospital of Traditional Chinese Medicine, Weifang, Shandong, China
| | - Lin Lin Sun
- Department of Otorhinolaryngology, Weifang Hospital of Traditional Chinese Medicine, Weifang, Shandong, China
| | - Zhao Lan Sun
- The First Clinical Medical College of Shandong University of Traditional Chinese Medicine, Jinan, Shandong, China
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3
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Anti-neoplastic Effect of Ginkgolide C through Modulating c-Met Phosphorylation in Hepatocellular Carcinoma Cells. Int J Mol Sci 2020; 21:ijms21218303. [PMID: 33167504 PMCID: PMC7664003 DOI: 10.3390/ijms21218303] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 11/03/2020] [Accepted: 11/03/2020] [Indexed: 02/07/2023] Open
Abstract
Ginkgolide C (GGC) derived from Ginkgo biloba, has been reported to exhibit various biological functions. However, the anti-neoplastic effect of GGC and its mechanisms in liver cancer have not been studied previously. Hepatocyte growth factor (HGF)/c-mesenchymal-epithelial transition receptor (c-Met) pathway can regulate tumor growth and metastasis in hepatocellular carcinoma (HCC) cells. This study aimed to evaluate the anti-neoplastic effect of GGC against HCC cells and we observed that GGC inhibited HGF-induced c-Met and c-Met downstream oncogenic pathways, such as PI3K/Akt/mTOR and MEK/ERK. In addition, GGC also suppressed the proliferation of expression of diverse tumorigenic proteins (Bcl-2, Bcl-xL, Survivin, IAP-1, IAP-2, Cyclin D1, and COX-2) and induced apoptosis. Interestingly, the silencing of c-Met by small interfering RNA (siRNA) mitigated c-Met expression and enhanced GGC-induced apoptosis. Moreover, it was noted that GGC also significantly reduced the invasion and migration of HCC cells. Overall, the data clearly demonstrate that GGC exerts its anti-neoplastic activity through modulating c-Met phosphorylation and may be used as an effective therapy against HCC.
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4
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Lin FJ, Lin XD, Xu LY, Zhu SQ. Long Noncoding RNA HOXA11-AS Modulates the Resistance of Nasopharyngeal Carcinoma Cells to Cisplatin via miR-454-3p/c-Met. Mol Cells 2020; 43:856-869. [PMID: 33115978 PMCID: PMC7604026 DOI: 10.14348/molcells.2020.0133] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 09/02/2020] [Accepted: 09/21/2020] [Indexed: 02/07/2023] Open
Abstract
To elucidate the mechanism of action of HOXA11-AS in modulating the cisplatin resistance of nasopharyngeal carcinoma (NPC) cells. HOXA11-AS and miR-454-3p expression in NPC tissue and cisplatin-resistant NPC cells were measured via quantitative reverse transcriptase polymerase chain reaction. NPC parental cells (C666-1 and HNE1) and cisplatin-resistant cells (C666-1/DDP and HNE1/DDP) were transfected and divided into different groups, after which the MTT method was used to determine the inhibitory concentration 50 (IC50) of cells treated with different concentrations of cisplatin. Additionally, a clone formation assay, flow cytometry and Western blotting were used to detect DDP-induced changes. Thereafter, xenograft mouse models were constructed to verify the in vitro results. Obviously elevated HOXA11-AS and reduced miR-454-3p were found in NPC tissue and cisplatin-resistant NPC cells. Compared to the control cells, cells in the si-HOXA11-AS group showed sharp decreases in cell viability and IC50, and these results were reversed in the miR-454-3p inhibitor group. Furthermore, HOXA11-AS targeted miR-454-3p, which further targeted c-Met. In comparison with cells in the control group, HNE1/DDP and C666-1/DDP cells in the si-HOXA11-AS group demonstrated fewer colonies, with an increase in the apoptotic rate, while the expression levels of c-Met, p-Akt/Akt and p-mTOR/mTOR decreased. Moreover, the si-HOXA11-AS-induced enhancement in sensitivity to cisplatin was abolished by miR-454-3p inhibitor transfection. The in vivo experiment showed that DDP in combination with si-HOXA11-AS treatment could inhibit the growth of xenograft tumors. Silencing HOXA11-AS can inhibit the c-Met/AKT/mTOR pathway by specifically upregulating miR-454-3p, thus promoting cell apoptosis and enhancing the sensitivity of cisplatin-resistant NPC cells to cisplatin.
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Affiliation(s)
- Feng-Jie Lin
- Department of Head & Neck Radiation Oncology, Fujian Cancer Hospital & Fujian Medical University Cancer Hospital, Fuzhou 350014, China
| | - Xian-Dong Lin
- Laboratory of Radiation Oncology and Radiobiology, Fujian Cancer Hospital & Fujian Medical University Cancer Hospital, Fuzhou 350014, China
| | - Lu-Ying Xu
- Department of Head & Neck Radiation Oncology, Fujian Cancer Hospital & Fujian Medical University Cancer Hospital, Fuzhou 350014, China
| | - Shi-Quan Zhu
- Department of Pharmacy, Fujian Cancer Hospital & Fujian Medical University Cancer Hospital, Fuzhou 350014, China
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5
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Lei H, Hu G, Wang Y, Han P, Liu Z, Zhao Y, Gong P. Design, Synthesis, and Biological Evaluation of 4-Phenoxyquinoline Derivatives Containing Benzo[d]thiazole-2-yl Urea as c-Met Kinase Inhibitors. Arch Pharm (Weinheim) 2016; 349:651-61. [DOI: 10.1002/ardp.201600003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Revised: 05/11/2016] [Accepted: 05/20/2016] [Indexed: 12/15/2022]
Affiliation(s)
- Hongrui Lei
- Key Laboratory of Structure-Based Drug Design and Discovery, Ministry of Education; Shenyang Pharmaceutical University; Shenyang P. R. China
| | - Gang Hu
- Key Laboratory of Structure-Based Drug Design and Discovery, Ministry of Education; Shenyang Pharmaceutical University; Shenyang P. R. China
| | - Yu Wang
- Key Laboratory of Structure-Based Drug Design and Discovery, Ministry of Education; Shenyang Pharmaceutical University; Shenyang P. R. China
| | - Pei Han
- Key Laboratory of Structure-Based Drug Design and Discovery, Ministry of Education; Shenyang Pharmaceutical University; Shenyang P. R. China
| | - Zijian Liu
- Key Laboratory of Structure-Based Drug Design and Discovery, Ministry of Education; Shenyang Pharmaceutical University; Shenyang P. R. China
| | - Yanfang Zhao
- Key Laboratory of Structure-Based Drug Design and Discovery, Ministry of Education; Shenyang Pharmaceutical University; Shenyang P. R. China
| | - Ping Gong
- Key Laboratory of Structure-Based Drug Design and Discovery, Ministry of Education; Shenyang Pharmaceutical University; Shenyang P. R. China
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6
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Chen L, Xu L, Wang G. Regulation of MET-mediated proliferation of thyroid carcinoma cells by miR-449b. Tumour Biol 2015; 36:8653-60. [PMID: 26044563 DOI: 10.1007/s13277-015-3619-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2015] [Accepted: 05/26/2015] [Indexed: 10/23/2022] Open
Abstract
Thyroid carcinoma (TC) is a lethal cancer worldwide, whereas its carcinogenesis is not fully understood. Although growing evidence has demonstrated that dysregulation of microRNAs (miRNAs) contributes to the development of various cancers, the role of miRNAs in the pathogenesis of TC is poorly characterized. Here, we analyzed the levels of miR-449b in TC tissues and detected significantly lower miR-449b levels in TC tissues. Moreover, the low miR-449b levels were associated with poor survival. We then overexpressed miR-449b by miRNA mimic transfection and inhibited miR-449b by miRNA antisense transfection. Cell growth was analyzed by CCK-8 assay and MTT assay, and apoptosis and cell proliferation were analyzed by flow cytometry. Overexpression of miR-449b significantly inhibited cell growth, while depletion of miR-449b increased cell growth. Moreover, the effects of miR-449b on cell growth were through modulation of cell proliferation rather than through modulation of cell apoptosis. Targeted genes were predicted by a bioinformatics algorithm and confirmed by a dual luciferase reporter assay, showing that miR-449b binds to the 3'-UTR of MET (hepatocyte growth factor receptor) mRNA, to inhibit its expression in TC cells. MET levels were regulated by miR-449b in TT cells. Together, we show that reduced miR-449b levels in TT tissues may promote TC growth, through MET-mediated cell proliferation.
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Affiliation(s)
- Lei Chen
- Department of General Surgery, The Tenth People's Hospital, Tongji University, 301 Middle Yanchang Road, Shanghai, 200072, China
| | - Lei Xu
- Department of General Surgery, The Tenth People's Hospital, Tongji University, 301 Middle Yanchang Road, Shanghai, 200072, China
| | - Gang Wang
- Department of General Surgery, The Tenth People's Hospital, Tongji University, 301 Middle Yanchang Road, Shanghai, 200072, China.
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7
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Hung TH, Li YH, Tseng CP, Lan YW, Hsu SC, Chen YH, Huang TT, Lai HC, Chen CM, Choo KB, Chong KY. Knockdown of c-MET induced apoptosis in ABCB1-overexpressed multidrug-resistance cancer cell lines. Cancer Gene Ther 2015; 22:262-70. [PMID: 25908454 DOI: 10.1038/cgt.2015.15] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2014] [Revised: 02/10/2015] [Accepted: 02/10/2015] [Indexed: 12/22/2022]
Abstract
Inappropriate c-MET signaling in cancer can enhance tumor cell proliferation, survival, motility, and invasion. Inhibition of c-MET signaling induces apoptosis in a variety of cancers. It has also been recognized as a novel anticancer therapy approach. Furthermore, reports have also indicated that constitutive expression of P-glycoprotein (ABCB1) is involved in the HGF/c-MET-related pathway of multidrug resistance ABCB1-positive human hepatocellular carcinoma cell lines. We previously reported that elevated expression levels of PKCδ and AP-1 downstream genes, and HGF receptor (c-MET) and ABCB1, in the drug-resistant MES-SA/Dx5 cells. Moreover, leukemia cell lines overexpressing ABCB1 have also been shown to be more resistant to the tyrosine kinase inhibitor imatinib mesylate. These findings suggest that chemoresistant cancer cells may also develop a similar mechanism against chemotherapy agents. To circumvent clinical complications arising from drug resistance during cancer therapy, the present study was designed to investigate apoptosis induction in ABCB1-overexpressed cancer cells using c-MET-targeted RNA interference technology in vitro and in vivo. The results showed that cell viability decreased and apoptosis rate increased in c-MET shRNA-transfected HGF/c-MET pathway-positive MES-SA/Dx5 and MCF-7/ADR2 cell lines in a dose-dependent manner. In vivo reduction of tumor volume in mice harboring c-MET shRNA-knockdown MES-SA/Dx5 cells was clearly demonstrated. Our study demonstrated that downregulation of c-MET by shRNA-induced apoptosis in a multidrug resistance cell line.
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Affiliation(s)
- T-H Hung
- Graduate Institute of Biomedical Sciences, Division of Biotechnology, College of Medicine, Chang Gung University, Tao-Yuan, Republic of China
| | - Y-H Li
- Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Tao-Yuan, Republic of China
| | - C-P Tseng
- 1] Graduate Institute of Biomedical Sciences, Division of Biotechnology, College of Medicine, Chang Gung University, Tao-Yuan, Republic of China [2] Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Tao-Yuan, Republic of China [3] Molecular Medicine Research Center, College of Medicine, Chang Gung University, Tao-Yuan, Republic of China
| | - Y-W Lan
- Graduate Institute of Biomedical Sciences, Division of Biotechnology, College of Medicine, Chang Gung University, Tao-Yuan, Republic of China
| | - S-C Hsu
- 1] Cancer Molecular Diagnostic Laboratory, Chang-Gung Memorial Hospital, Lin-Kou Medical Center, Tao-Yuan, Republic of China [2] Department of Pathology, Chang-Gung Memorial Hospital, Lin-Kou Medical Center, Tao-Yuan, Republic of China
| | - Y-H Chen
- Graduate Institute of Pharmaceutical Sciences and Graduate Institute of Clinical Pharmacy, College of Medicine, National Taiwan University, Taipei, Republic of China
| | - T-T Huang
- Center for Molecular and Clinical Immunology, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan, Republic of China
| | - H-C Lai
- 1] Graduate Institute of Biomedical Sciences, Division of Biotechnology, College of Medicine, Chang Gung University, Tao-Yuan, Republic of China [2] Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Tao-Yuan, Republic of China
| | - C-M Chen
- 1] Department of Life Sciences, National Chung Hsing University, Taichung, Republic of China [2] Agricultural Biotechnology Center, National Chung Hsing University, Taichung, Republic of China [3] Rong-Hsing Translational Medicine Center, National Chung Hsing University, Taichung, Republic of China
| | - K-B Choo
- Department of Preclinical Sciences, Faculty of Medicine and Health Sciences and Centre for Stem Cell Research, Universiti Tunku Abdul Rahman, Selangor, Malaysia
| | - K-Y Chong
- 1] Graduate Institute of Biomedical Sciences, Division of Biotechnology, College of Medicine, Chang Gung University, Tao-Yuan, Republic of China [2] Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Tao-Yuan, Republic of China [3] Molecular Medicine Research Center, College of Medicine, Chang Gung University, Tao-Yuan, Republic of China
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8
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Li YQ, Ren XY, He QM, Xu YF, Tang XR, Sun Y, Zeng MS, Kang TB, Liu N, Ma J. MiR-34c suppresses tumor growth and metastasis in nasopharyngeal carcinoma by targeting MET. Cell Death Dis 2015; 6:e1618. [PMID: 25611392 PMCID: PMC4669777 DOI: 10.1038/cddis.2014.582] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2014] [Revised: 12/11/2014] [Accepted: 12/17/2014] [Indexed: 12/19/2022]
Abstract
Our previous microarray analysis indicated that miR-34c was downregulated in nasopharyngeal carcinoma (NPC). However, little is known about the function and molecular mechanism of miR-34c in NPC. In this study, miR-34c was found to be significantly downregulated in NPC cell lines and clinical tissues. Ectopic expression of miR-34c suppressed NPC cell viability, colony formation, anchorage-independent growth, cell migration and invasion in vitro, and inhibited xenograft tumor growth and lung metastasis in vivo. MET proto-oncogene (MET) was identified as a direct target of miR-34c using luciferase reporter assays, quantitative RT-PCR, western blotting and immunofluorescent staining. Overexpression of miR-34c markedly reduced MET expression at both the mRNA and protein levels. Knockdown of MET suppressed NPC cell proliferation, migration and invasion, whereas the restoration of MET rescued the suppressive effects of miR-34c. The demethylation agent 5-aza-2′-deoxycytidine (DAC) restored the expression of miR-34c in NPC cell lines. The promoter region of miR-34c was hypermethylated in NPC cells. In conclusion, miR-34c suppresses tumor growth and metastasis in NPC by targeting MET. The newly identified miR-34c/MET pathway provides further insights into the development and progression of NPC, and may represent a novel therapeutic target for NPC treatment.
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Affiliation(s)
- Y-Q Li
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangzhou, Guangdong, China
| | - X-Y Ren
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangzhou, Guangdong, China
| | - Q-M He
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangzhou, Guangdong, China
| | - Y-F Xu
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangzhou, Guangdong, China
| | - X-R Tang
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangzhou, Guangdong, China
| | - Y Sun
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangzhou, Guangdong, China
| | - M-S Zeng
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangzhou, Guangdong, China
| | - T-B Kang
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangzhou, Guangdong, China
| | - N Liu
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangzhou, Guangdong, China
| | - J Ma
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangzhou, Guangdong, China
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9
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Song S, Bi M. [Research progress of HGF/MET signaling pathway in EGFR-TKI resistance
in non-small cell lung cancer]. ZHONGGUO FEI AI ZA ZHI = CHINESE JOURNAL OF LUNG CANCER 2014; 17:755-9. [PMID: 25342043 PMCID: PMC6000405 DOI: 10.3779/j.issn.1009-3419.2014.10.08] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
肺癌是世界上最常见的恶性肿瘤之一,其中非小细胞肺癌约占80%。肝细胞生长因子(hepatocyte growth factor, HGF)/上皮间质转化因子(mesenchymal-epithelial transition factor, MET)信号通路在许多生物学进程中都发挥着多效性影响,然而,在多种类型的肿瘤中都观察到HGF/MET信号通路的异常激活,并且通过生长因子受体和其他致癌性基因受体通路促进细胞增殖和转移。近年来,HGF/MET信号通路的异常激活被认为是对表皮生长因子受体酪氨酸激酶抑制剂(epidermal growth factor receptor tyrosine kinase inhibitor, EGFR-TKI)产生耐药的一个重要原因。本文将重点阐述该通路异常激活与非小细胞肺癌患者EGFR-TKI耐药的联系。
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Affiliation(s)
- Shilong Song
- Department of Medical Oncology, the First Affiliated Hospital of Bengbu Medical University, Bengbu 233004, China
| | - Minghong Bi
- Department of Medical Oncology, the First Affiliated Hospital of Bengbu Medical University, Bengbu 233004, China
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10
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Met degradation by SAIT301, a Met monoclonal antibody, reduces the invasion and migration of nasopharyngeal cancer cells via inhibition of EGR-1 expression. Cell Death Dis 2014; 5:e1159. [PMID: 24722284 PMCID: PMC5424102 DOI: 10.1038/cddis.2014.119] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Revised: 02/20/2014] [Accepted: 02/21/2014] [Indexed: 11/09/2022]
Abstract
Nasopharyngeal carcinoma (NPC) is a common malignant tumor with high invasive and metastatic potential. The hepatocyte growth factor (HGF)-Met signaling pathway has a critical role in mediating the invasive growth of many different types of cancer, including head and neck squamous cell carcinoma. HGF also stimulates NPC cell growth and invasion in the cell line model. In this study, we determined the inhibitory effect of Met, using a Met-targeting monoclonal antibody (SAIT301), on the invasive and growth potential of NPC cell lines. Met inhibition by SAIT301 resulted in highly significant inhibition of cell migration and invasion in both the HONE1 and HNE1 cell lines. In addition, we also found that co-treatment of SAIT301 and HGF decreased the anchorage-independent growth induced by HGF in HNE1 cell lines. After SAIT301 treatment, Met, together with its downstream signaling proteins, showed downregulation of p-Met and p-ERK, but not p-AKT, in both HONE1 and HNE1 cell lines. Interestingly, we found that HGF treatment of NPC cell lines induced early growth response protein (EGR-1) expression, which is involved in cell migration and invasion. In addition, co-treatment with SAIT301 and HGF inhibited the HGF-induced expression of EGR-1. Next, knockdown of EGR-1 using small-interfering RNA inhibited HGF-induced cell invasion in NPC cell lines, suggesting that the expression level of EGR-1 is important in HGF-induced cell invasion of NPC cells. Therefore, the results support that SAIT301 inhibited Met activation as well as the downstream EGR-1 expression and could have therapeutic potential in NPC. Taken together, we suggest that Met is an anticancer therapeutic target for NPC that warrants further investigation and clinical trials and SAIT301 may be a promising tool for NPC therapy.
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11
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Meng F, Li H, Shi H, Yang Q, Zhang F, Yang Y, Kang L, Zhen T, Dai S, Dong Y, Han A. MACC1 down-regulation inhibits proliferation and tumourigenicity of nasopharyngeal carcinoma cells through Akt/β-catenin signaling pathway. PLoS One 2013; 8:e60821. [PMID: 23573286 PMCID: PMC3616016 DOI: 10.1371/journal.pone.0060821] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2012] [Accepted: 03/02/2013] [Indexed: 01/27/2023] Open
Abstract
The present study was aimed at investigating the expression of metastasis-associated in colon cancer 1 (MACC1) in nasopharyngeal carcinoma (NPC), its relationship with β-catenin, Met expression and the clinicopathological features of NPC, and its roles in carcinogenesis of NPC. Our results showed that MACC1 expression was higher in NPC cells and tissues than that in normal nasopharyngeal cells and chronic inflammation of the nasopharynx tissues, respectively. MACC1 expression was closely related to the clinical stage (p = 0.005) and the N classification (p<0.05) of NPC. Significant correlations between MACC1 expression and Met expression (p = 0.003), MACC1 expression and β-catenin abnormal expression (p = 0.033) were found in NPC tissues. MACC1 knockdown dramatically inhibited cellular proliferation, migration, invasion, and colony formation, but induced apoptosis in NPC cells compared with the control group. Furthermore, MACC1 down-regulation inhibited phosphorylated-Akt (Ser473) and β-catenin expression in NPC cells, but phosphorylated-Erk1/2 expression was not altered. Further study showed that phosphotidylinsitol-3-kinase inhibitor downregulated β-catenin and Met expression in NPC cells. There was a significant relationship between MACC1 expression and phosphorylated-Akt expression (p = 0.03), β-catenin abnormal expression and phosphorylated-Akt expression (p = 0.012) in NPC tissue, respectively. In addition, Epstein Barr virus-encoded oncogene latent membrane protein 1 upregulated MACC1 expression in NPC cells. Our results firstly suggest that MACC1 plays an important role in carcinogenesis of NPC through Akt/β-catenin signaling pathway. Targeting MACC1 may be a novel therapeutic strategy for NPC.
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Affiliation(s)
- Fengjiao Meng
- Department of Pathology, the First Affiliated Hospital and Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, China
| | - Hui Li
- Department of Pathology, the First Affiliated Hospital and Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, China
| | - Huijuan Shi
- Department of Pathology, the First Affiliated Hospital and Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, China
| | - Qingxu Yang
- Department of Pathology, Huizhou Municipal Central Hospital, Huizhou, China
| | - Fenfen Zhang
- Department of Pathology, the First Affiliated Hospital and Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, China
| | - Yang Yang
- Department of Pathology, the First Affiliated Hospital and Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, China
| | - Lili Kang
- Department of Pathology, the First Affiliated Hospital and Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, China
| | - Tiantian Zhen
- Department of Pathology, the First Affiliated Hospital and Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, China
| | - Sujuan Dai
- Department of Pathology, the First Affiliated Hospital and Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, China
| | - Yu Dong
- Department of Pathology, the First Affiliated Hospital and Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, China
| | - Anjia Han
- Department of Pathology, the First Affiliated Hospital and Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, China
- * E-mail:
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12
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KRC-408, a novel c-Met inhibitor, suppresses cell proliferation and angiogenesis of gastric cancer. Cancer Lett 2013; 332:74-82. [PMID: 23348694 DOI: 10.1016/j.canlet.2013.01.015] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2012] [Revised: 01/09/2013] [Accepted: 01/09/2013] [Indexed: 12/30/2022]
Abstract
Among many cancer therapeutic targets, c-Met receptor tyrosine kinase has recently given particular attention. This kinase and its ligand, hepatocyte growth factor (HGF), play a central role in cell proliferation and the survival of several human cancers. Thus, we developed KRC-408 as a novel c-Met inhibitor and investigated its anti-cancer effects on human gastric cancer. KRC-408 inhibited the phosphorylation of c-Met and its constitutive downstream effectors such as phosphatidylinositol 3-kinase (PI3K), Akt, Mek, and Erk. This compound was found to exert anti-cancer effects stronger than those of 5-fluorouracil (5-FU) on gastric cancer cells, especially cell lines that overexpressed c-Met. Interestingly, cytotoxicity of KRC-408 was lower than that of 5-FU in normal gastric cells. Apoptosis induced by KRC-408 was accompanied by increased levels of cleaved caspase-3 and PARP as well as DNA condensation and fragmentation. Flow cytometry analysis showed an accumulation of gastric cancer cells in the G2/M phase with concomitant loss of cells in the S phase following treatment with this drug. In the angiogenesis studies, KRC-408 inhibited tube formation and migration of human umbilical vein endothelial cells (HUVECs), and suppressed microvessel sprouting from rat aortic rings ex vivo along with blood vessel formation in a Matrigel plug assay in mice. Results of an in vivo mouse xenograft experiment showed that the administration of KRC-408 significantly delayed tumor growth in a dose-dependent manner, and suppressed Akt and Erk phosphorylation as well CD34 expression in tumor tissues. These findings indicate that KCR-408 may exert anti-tumor effects by directly affecting tumor cell growth or survival via the c-Met receptor tyrosine kinase pathway. We therefore suggest that KRC-408 is a novel therapeutic candidate effective against gastric cancers that overexpress c-Met.
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Zhang L, Yang L, Li JJ, Sun L. Potential use of nucleic acid-based agents in the sensitization of nasopharyngeal carcinoma to radiotherapy. Cancer Lett 2012; 323:1-10. [DOI: 10.1016/j.canlet.2012.03.030] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2012] [Revised: 03/26/2012] [Accepted: 03/26/2012] [Indexed: 11/27/2022]
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