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Dong W, Li X, Cheng L, Yang J, Zhao Z, Qiang X, Li P, Wu J, Guo L. RAE1 promotes gastric carcinogenesis and epithelial-mesenchymal transition. Arch Biochem Biophys 2024; 754:109896. [PMID: 38417691 DOI: 10.1016/j.abb.2024.109896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 10/22/2023] [Revised: 01/16/2024] [Accepted: 01/18/2024] [Indexed: 03/01/2024]
Abstract
AIMS The purpose of this study was to explore the role of RAE1 in the invasion and metastasis of gastric cancer (GC) cells. MATERIALS AND METHODS RAE1 expression in GC cells was determined by reverse-transcription polymerase chain reaction (qRT-PCR) and Western blotting (WB). Cell models featuring RAE1 gene silencing and overexpression were constructed by lentiviral transfection; The proliferation, migration, and invasion ability of cells were detected by cell counting, colony formation assay, would healing assay, and transwell invasion and migration test. WB analysis of ERK/MAPK signaling pathway (ERK1/2, p-ERK1/2, c-Myc) and EMT-related molecules (ZEB1, E-cadherin, N-cadherin, and Vimentin). RESULTS The expression level of RAE1 in GC was notably higher than in adjacent tissues. Elevated RAE1 expression correlated with an unfavorable prognosis for GC patients. Knockdown of RAE1, as compared to the control group, resulted in a significant inhibition of proliferation, migration, and invasion abilities in GC cell lines. Furthermore, RAE1 knockdown led to a substantial decrease in the expression of N-cadherin, vimentin, ZEB1, p-ERK1/2, and c-Myc proteins, coupled with a marked increase in E-cadherin expression. The biological effects of RAE1 in GC cells were effectively reversed by the inhibition of the ERK/MAPK signaling pathway using SCH772984. Additionally, RAE1 knockdown demonstrated a suppressive effect on GC tumor size in vivo. Immunohistochemistry (IHC) results revealed significantly lower expression of Ki-67 in RAE1 knockout mice compared to the control group. CONCLUSIONS RAE1 promotes GC cell migration and invasion through the ERK/MAPK pathway and is a potential therapeutic target for GC therapy.
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Affiliation(s)
- Wenhui Dong
- Department of Gastroenterology, First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Xiaofei Li
- Department of Gastroenterology, First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Lulu Cheng
- Department of Gastroenterology, First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Jing Yang
- Department of Pathology, First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Ziyan Zhao
- Department of Hematology, First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Xihui Qiang
- Department of Gastroenterology, First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Pengmei Li
- Department of Gastroenterology, First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Ju Wu
- Department of General Surgery, Affiliated Zhongshan Hospital of Dalian University, Dalian, China.
| | - Lianyi Guo
- Department of Gastroenterology, First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China.
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Jia Z, Liu Q, Xie Y, Wei J, Sun X, Meng F, Zhao B, Yu Z, Zhao L, Xing Z. Klotho/FGF23 Axis Regulates Cardiomyocyte Apoptosis and Cytokine Release through ERK/MAPK Pathway. Cardiovasc Toxicol 2023; 23:317-328. [PMID: 37704925 DOI: 10.1007/s12012-023-09805-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Accepted: 08/24/2023] [Indexed: 09/15/2023]
Abstract
Coronary artery disease (CAD) as a major cardiovascular disease is the leading global cause of mortality, Klotho/FGF23 axis involved in development of cardiovascular disease, while the function and underlying mechanism of Klotho/FGF23 axis in CAD is unclear. Blood samples from 67 CAD patients with coronary artery bypass graft (CABG) surgery were collected, and the level of Klotho and FGF23 of those patients was measured by using an ELISA kit. Cardiomyocyte was isolated from 0 to 3 days Sprague Dawley (SD) rats. Expression of Klotho, FGF23 and the cardiomyocyte marker α-sarcomeric actin (α-SA), myosin heavy chain (MHC) and cardiac troponin I (cTnI) was assessed by immunofluorescence staining. Expression of Klotho and FGF23 mRNA was detected by qRT-PCR. Apoptosis and cell cycle were measured by flow cytometry. Cell viability was detected by using CCK-8. The protein expression of ERK/MAPK pathway related protein and cytokines production was measured by western blotting. The levels of Klotho in CAD patients increased after CABG surgery, while FGF23 decreased. Isolated cardiomyocyte morphology and structure were completed, and with stabilized beating within culture for 15 days, besides, α-SA, MHC, and cTnI proved positive. After transfected Lenti-Klotho and Lenti-FGF23 into isolated cardiomyocyte, fluorescence staining showed that the transfection was successful, and qRT-PCR results showed that the expression levels of Klotho and FGF23 mRNA significant increased compared with NEG (empty vector) group. Immunofluorescence staining results showed that compared with NEG group, there was a higher Klotho positive rate and lower FGF23 positive rate in Klotho overexpression (Klotho) group, while, there was a higher FGF23 positive rate and lower Klotho positive rate in FGF23 overexpression (FGF23) group. In addition, the expression of p-ERK1/2 and p-P38 increased in Klotho group but decreased in FGF23 group. Furthermore, overexpression of Klotho inhibited cardiomyocyte apoptosis, increased S phase fraction, promoted proliferation and elevated expression of transforming growth factor β1 (TGF-β1), nuclear factor-kappa B (NF-κB), angiotensin-II (AT-II), and activator protein-1 (AP-1), overexpression of FGF23 showed the opposite effect, however, ERK agonist (TPA) and inhibitor (U0126) reversed the effect caused by overexpression of Klotho and FGF23 separately. Klotho/FGF23 axis play a critical role in CAD progression through regulating ERK/MAPK pathway in Cardiomyocyte.
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Affiliation(s)
- Zheng Jia
- Department of Cardiovascular Surgery, Yan'an Hospital Affiliated to Kunming Medical University, NO. 245 Renmin East Road, Panlong District, Kunming, 650051, Yunnan, China
| | - Qian Liu
- Department of Geriatric Cardiovascular, Yan'an Hospital Affiliated to Kunming Medical University, Kunming, China
| | - Ying Xie
- Department of Cardiovascular Surgery, Yan'an Hospital Affiliated to Kunming Medical University, NO. 245 Renmin East Road, Panlong District, Kunming, 650051, Yunnan, China
| | - Jie Wei
- Department of Cardiovascular Surgery, Yan'an Hospital Affiliated to Kunming Medical University, NO. 245 Renmin East Road, Panlong District, Kunming, 650051, Yunnan, China
| | - Xiaolin Sun
- Department of Cardiovascular Surgery, Yan'an Hospital Affiliated to Kunming Medical University, NO. 245 Renmin East Road, Panlong District, Kunming, 650051, Yunnan, China
| | - Fandi Meng
- Department of Cardiovascular Surgery, Yan'an Hospital Affiliated to Kunming Medical University, NO. 245 Renmin East Road, Panlong District, Kunming, 650051, Yunnan, China
| | - Bin Zhao
- Department of Cardiovascular Surgery, Yan'an Hospital Affiliated to Kunming Medical University, NO. 245 Renmin East Road, Panlong District, Kunming, 650051, Yunnan, China
| | - Zhenkun Yu
- Department of Cardiovascular Surgery, Yan'an Hospital Affiliated to Kunming Medical University, NO. 245 Renmin East Road, Panlong District, Kunming, 650051, Yunnan, China
| | - Li Zhao
- Department of Cardiovascular Ultrasound, Yan'an Hospital Affiliated to Kunming Medical University, NO. 245 Renmin East Road, Panlong District, Kunming, 650051, Yunnan, China.
| | - Zhengjiang Xing
- Department of Cardiovascular Surgery, Yan'an Hospital Affiliated to Kunming Medical University, NO. 245 Renmin East Road, Panlong District, Kunming, 650051, Yunnan, China.
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Tang B, Liang W, Liao Y, Li Z, Wang Y, Yan C. [Retracted] PEA15 promotes liver metastasis of colorectal cancer by upregulating the ERK/MAPK signaling pathway. Oncol Rep 2023; 50:137. [PMID: 37232371 DOI: 10.3892/or.2023.8574] [Citation(s) in RCA: 0] [Impact Index Per Article: 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: 03/30/2018] [Accepted: 09/24/2018] [Indexed: 05/27/2023] Open
Abstract
Following the publication of this paper, it was drawn to the Editors' attention by a concerned reader that certain of the tumor images shown in Fig. 4G and H were strikingly similar to tumor images (albeit oriented differently) which had previously appeared in Fig. 8A in another article published in the journal International Journal of Oncology [Tang B, Li Y, Yuan S, Tomlinson S and He S: Upregulation of the δ opioid receptor in liver cancer promotes liver cancer progression both in vitro and in vivo. Int J Oncol 43: 1281‑1290, 2013], indicating that results which were purported to have been obtained under different experimental conditions had been derived from the same original source. In view of the fact that these data had already appeared in another publication prior to its submission to Oncology Reports, the Editor has decided that this paper should be retracted from the Journal. The authors were asked for an explanation to account for these concerns, but the Editorial Office did not receive a satisfactory reply. The Editor apologizes to the readership for any inconvenience caused. [Oncology Reports 41: 43‑56, 2019; DOI: 10.3892/or.2018.6825].
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Affiliation(s)
- Bo Tang
- School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, P.R. China
| | - Wenjin Liang
- Department of Hepatobiliary Surgery, Guilin Medical University, Affiliated Hospital, Guilin, Guangxi 541004, P.R. China
| | - Yong Liao
- Department of Hepatobiliary Surgery, Guilin Medical University, Affiliated Hospital, Guilin, Guangxi 541004, P.R. China
| | - Zeming Li
- Department of Hepatobiliary Surgery, Guilin Medical University, Affiliated Hospital, Guilin, Guangxi 541004, P.R. China
| | - Yan Wang
- School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, P.R. China
| | - Chao Yan
- School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, P.R. China
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Bai Z, Zhang M, Li J, Xi J, Ma R, Xi L, Zhang B, Tian J. (2E)-1-(2,4,6-trimethoxyphenyl)-3-(3-chlorophenyl)-2-propen-1-one, a Chalcone Derivative, Promotes Apoptosis by Suppressing RAS-ERK and AKT/FOXO3a Pathways in Hepatocellular Carcinoma Cells. Chem Biodivers 2023:e202300050. [PMID: 37314937 DOI: 10.1002/cbdv.202300050] [Citation(s) in RCA: 0] [Impact Index Per Article: 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: 01/11/2023] [Revised: 06/08/2023] [Accepted: 06/13/2023] [Indexed: 06/16/2023]
Abstract
BACKGROUND Liver cancer is an extremely common cancer with the highest mortality rate and poor prognosis. Owing to their low systemic toxicity and few side effects, natural compounds may provide better therapeutic effects for patients. (2E)-1-(2,4,6-trimethoxyphenyl)-3-(3-chlorophenyl)-2-propen-1-one (TMOCC), a chalcone derivative, exhibits cytotoxicity towards many tumor cells. However, the anticancer mechanism of TMOCC has not been elucidated in human hepatocellular carcinoma (HCC). METHODS Cell Counting Kit-8 and colony formation assays were used to evaluate the effects of TMOCC on viability and proliferation. Mitochondrial transmembrane potential and flow cytometry assays were used to detect apoptosis. The expression levels of proteins related to apoptosis, the RAS-ERK and AKT/FOXO3a signaling pathways were assessed using western blot. Potential targets of TMOCC were detected using molecular docking analysis. RESULTS TMOCC inhibited viability and proliferation, and induced the loss of mitochondrial transmembrane potential, apoptosis and DNA double-strand breaks in both HCC cells. The RAS-ERK and AKT/FOXO3a signaling pathways were suppressed by TMOCC. Finally, ERK1, PARP-1, and BAX were identified as potential targets of TMOCC. CONCLUSION Taken together, our results show that TMOCC promotes apoptosis by suppressing the RAS-ERK and AKT/FOXO3a signaling pathways. TMOCC may be a potential multi-target compound that is effective against liver cancer.
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Affiliation(s)
- Zhongtian Bai
- Lanzhou University First Affiliated Hospital, General Surgery, Donggang West Road N0.1, 730000, Lanzhou, CHINA
| | - Meigui Zhang
- Lanzhou University First Affiliated Hospital, General Surgery, Donggang West Road No.1, Lanzhou, CHINA
| | - Jing Li
- Lanzhou University First Affiliated Hospital, General Surgery, Donggang West Road No.1, Lanzhou, CHINA
| | - Jiahui Xi
- Lanzhou University First Affiliated Hospital, General Surgery, Donggang West Road No.1, Lanzhou, CHINA
| | - Ruixia Ma
- Lanzhou University First Affiliated Hospital, General Surgery, Donggang West Road No.1, Lanzhou, CHINA
| | - Lili Xi
- Lanzhou University First Affiliated Hospital, Office of Institution of Drug Clinical Trail, Donggang West Road No.1, Lanzhou, CHINA
| | - Baoxin Zhang
- Lanzhou University, State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Donggang West Road No.1, Lanzhou, CHINA
| | - Jing Tian
- Lanzhou University Second Hospital, Ophthalmology Department, Donggang West Road No.1, Lanzhou, CHINA
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Wang C, Wen M, Xu J, Gao P, Liu S, Liu J, Chen Y, Zhou L. GTSE1 promotes the growth of NSCLC by regulating microtubule-associated proteins through the ERK/MAPK pathway. Thorac Cancer 2023. [PMID: 37079439 DOI: 10.1111/1759-7714.14908] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 04/04/2023] [Accepted: 04/05/2023] [Indexed: 04/21/2023] Open
Abstract
The role of G2 and S phase-expressed-1 (GTSE1), a microtubule-localized protein, in non-small-cell lung cancer (NSCLC) remains unknown. We explored its role in NSCLC growth. GTSE1 was detected in NSCLC tissues and cell lines using quantitative real-time polymerase chain reaction. The clinical significance of GTSE1 levels was evaluated. Biological and apoptotic effects of GTSE1 were evaluated using transwell, cell-scratch, and MTT assays, and flow cytometry and western blotting, respectively. Its association with cellular microtubules was shown by western blotting and immunofluorescence. GTSE1 expression was upregulated in NSCLC tissues and cell lines. GTSE1 levels correlated with lymph node metastasis. Higher GTSE1 mRNA expression correlated with shorter progression-free survival. GTSE1-knockdown decreased proliferation, colony formation, invasion, and migration of NSCLC cells, and inhibited tau and stathmin-1 microtubule-associated protein expression, via the extracellular-regulated protein kinase/mitogen-activated protein kinase (ERK/MAPK) signaling pathway, and microtubule disruption. GTSE1 may promote NSCLC growth by regulating tau and stathmin-1 through the ERK/MAPK signaling pathway.
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Affiliation(s)
- Chuanlin Wang
- Department of Clinical Nutrition, Yunnan Cancer Hospital/The Third Affiliated Hospital of Kunming Medical University, Kunming, China
- Department of Clinical Nutrition, Yunnan Cancer Center, Kunming, China
| | - Meiyan Wen
- Department of Clinical Nutrition, Yunnan Cancer Hospital/The Third Affiliated Hospital of Kunming Medical University, Kunming, China
- Department of Clinical Nutrition, Yunnan Cancer Center, Kunming, China
| | - Jiali Xu
- Department of Clinical Nutrition, Yunnan Cancer Hospital/The Third Affiliated Hospital of Kunming Medical University, Kunming, China
- Department of Clinical Nutrition, Yunnan Cancer Center, Kunming, China
| | - Pengning Gao
- Department of Clinical Nutrition, Yunnan Cancer Hospital/The Third Affiliated Hospital of Kunming Medical University, Kunming, China
- Department of Clinical Nutrition, Yunnan Cancer Center, Kunming, China
| | - Shanling Liu
- Department of Clinical Nutrition, Yunnan Cancer Hospital/The Third Affiliated Hospital of Kunming Medical University, Kunming, China
- Department of Clinical Nutrition, Yunnan Cancer Center, Kunming, China
| | - Jiayu Liu
- Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, Department of Toxicology, School of Public Health, Anhui Medical University, Hefei, China
| | - Ying Chen
- Department of Clinical Nutrition, Yunnan Cancer Center, Kunming, China
- Department of Thoracic Surgery, Yunnan Cancer Hospital/The Third Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Lan Zhou
- Department of Clinical Nutrition, Yunnan Cancer Hospital/The Third Affiliated Hospital of Kunming Medical University, Kunming, China
- Department of Clinical Nutrition, Yunnan Cancer Center, Kunming, China
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Si H, Zhang N, Shi C, Luo Z, Hou S. Tumor-suppressive miR-29c binds to MAPK1 inhibiting the ERK/MAPK pathway in pancreatic cancer. Clin Transl Oncol 2023; 25:803-816. [PMID: 36510038 DOI: 10.1007/s12094-022-02991-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 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: 07/19/2022] [Accepted: 10/23/2022] [Indexed: 12/14/2022]
Abstract
INTRODUCTION GEO- and TCGA-based data analysis suggested the differential expression of miR-29c in pancreatic cancer. However, limited data are available on the downstream mechanistic actions of miR-29c, which may fuel the in vitro and in vivo studies of pancreatic cancer. METHODS The downstream target gene of miR-29c and the downstream ERK/MAPK pathway involved in pancreatic cancer were predicted by bioinformatics tools. Next, the expression of miR-29c and MAPK1 was determined in pancreatic cancer tissues and cells. After ectopic expression and depletion experiments in pancreatic cancer cells, oncogenic phenotypes of pancreatic cancer cells were tested by MTS assay, Transwell assay, and flow cytometry. Effects of miR-29c/MAPK1 on tumorigenic ability in vivo were evaluated in pancreatic cancer xenografts in nude mice. RESULTS Through differential analysis, five pancreatic cancer-related miRNAs (hsa-miR-29c, hsa-miR-107, hsa-miR-324-3p, hsa-miR-375, and hsa-miR-210) were screened out, among which miR-29c was selected as the key miRNA related to prognosis of pancreatic cancer patients. miR-29c could target and inhibit MAPK1 to suppress the activation of ERK/MAPK pathway. miR-29c was downregulated in pancreatic cancer, and its high expression was related to the good prognosis of pancreatic cancer patients. Both in vitro and in vivo experiments demonstrated that restoration of miR-29c inhibited oncogenic phenotypes of pancreatic cancer cells, as well as repressed tumorigenic ability of pancreatic cancer cells in nude mice. CONCLUSIONS Taken together, we unveil a novel miR-29c/MAPK1/ERK/MAPK axis that suppresses pancreatic cancer both in vitro and in vivo.
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Affiliation(s)
- Hongtao Si
- Department of Oncology, The Second Hospital of Hebei Medical University, Shijiazhuang, 050000, People's Republic of China
| | - Ning Zhang
- Department of Oncology, The Second Hospital of Hebei Medical University, Shijiazhuang, 050000, People's Republic of China
| | - Chang Shi
- Department of Oncology, The Second Hospital of Hebei Medical University, Shijiazhuang, 050000, People's Republic of China
| | - Zhanjiang Luo
- The Seventh Hospital of Handan, Handan, 056005, People's Republic of China
| | - Senlin Hou
- Ninth Department of General Surgery, The Second Hospital of Hebei Medical University, No. 215, Heping West Road, Shijiazhuang, 050000, People's Republic of China.
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Yang X, Zeng T, Liu Z, He W, Hu M, Tang T, Chen L, Xing L. Long noncoding RNA GK-IT1 promotes esophageal squamous cell carcinoma by regulating MAPK1 phosphorylation. Cancer Med 2022; 11:4555-4574. [PMID: 35608100 PMCID: PMC9741976 DOI: 10.1002/cam4.4795] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 02/13/2022] [Accepted: 03/30/2022] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Long noncoding RNAs (lncRNAs) are implicated in the oncogenesis and metastasis of multiple human cancers. Nonetheless, the precise molecular mechanisms underlying the oncogenic role of lncRNA in esophageal squamous cell carcinoma (ESCC) remains to be clarified. METHODS The expression of GK intronic transcript 1 (GK-IT1) was analyzed using ESCC RNA-seq data from The Cancer Genome Atlas database. Quantitative real-time PCR was used to measure the expression of GK-IT1 in ESCC clinical samples and cells. The correlation between GK-IT1 expression and clinicopathological variables was examined using chi-squared tests. Kaplan-Meier survival and Cox regression analyses were employed to generate the survival curve and assess the prognostic value of GK-IT1. Functional experiments were utilized to explore the role of GK-IT1 in promoting cell migration, invasion, proliferation, and suppressing apoptosis and autophagy in ESCC. To understand the mechanism, an RNA pulldown assay, RNA immunoprecipitation, agarose gel electrophoresis, immunofluorescence, and co-immunoprecipitation assays were used. RESULTS In this study we identified an unreported lncRNA, termed GK-IT1 that was aberrantly overexpressed in ESCC tissues and cells. GK-IT1 was closely associated with advanced clinical stage, and it was an independent prognostic indicator of ESCC. Functional assays verified that GK-IT1 significantly promoted ESCC proliferation, invasion, and migration, and suppressed ESCC apoptosis and autophagy. Furthermore, tumorigenesis experiments in nude mice indicated that GK-IT1 promoted ESCC tumor growth and metastasis. Mechanistically, GK-IT1 competitively bound to mitogen-activated protein kinase 1 (MAPK1) to prevent the interaction between dual specificity phosphatase 6 (DUSP6) and MAPK1, thereby controlling the phosphorylation of MAPK1 and promoting ESCC progression. CONCLUSION Our study revealed that GK-IT1 competed with DUSP6 to attenuate the interaction between DUSP6 and MAPK1, leading to activation of the ERK/MAPK pathway, thereby promoting progression of ESCC. Our research indicated that GK-IT1 served as a novel potential target for the diagnosis and treatment of ESCC.
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Affiliation(s)
- Xin Yang
- Department of Thoracic SurgeryThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina
| | - Tianyang Zeng
- Department of Thoracic SurgeryThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina
| | - Ziyang Liu
- Department of Thoracic SurgeryThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina
| | - Wanlun He
- The Frist People's HospitalChongqing Liang Jiang New AreaChongqingChina
| | - Mengting Hu
- Department of Cell Biology and GeneticsChongqing Medical UniversityChongqingChina
| | - Ti Tang
- Department of Thoracic SurgeryThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina
| | - Li Chen
- Department of Thoracic SurgeryThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina
| | - Lei Xing
- Department of Endocrine and Breast SurgeryThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina
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Zhang N, Liao Y, Lv W, Zhu S, Qiu Y, Chen N, Xiao M, Zhang H. FBXO32 targets PHPT1 for ubiquitination to regulate the growth of EGFR mutant lung cancer. Cell Oncol (Dordr) 2022. [PMID: 35411430 DOI: 10.1007/s13402-022-00669-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/16/2022] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Phosphohistidine phosphatase 1 (PHPT1) is an oncogene that has been reported to participate in multiple tumorigenic processes. As yet, however, the role of PHPT1 in lung cancer development remains uncharacterized. METHODS RNA sequencing assay and 18 pairs of tumor and normal tissues from patients were analyzed to reveal the upregulation of PHPT1 in lung cancer, followed by confirming the biological function in vitro and in vivo. Next, Gene Set Enrichment Analysis, lung cancer samples, apoptosis assay, mass spectrometry experiments and western blotting were used to investigate the molecular mechanism underlying PHPT1 driven progression in epidermal growth factor receptor (EGFR)-mutant lung cancer. Finally, we performed cellular and animal experiments to explore the tumor suppressive function of F-box protein 32 (FBXO32). RESULTS We found that PHPT1 is overexpressed in lung cancer patients and correlates with a poor overall survival. In addition, we found that the expression of PHPT1 is elevated in EGFR-mutant lung cancer cells and primary patient samples. Inhibition of PHPT1 expression in EGFR mutant lung cancer cells significantly decreased their proliferation and clonogenicity, and suppressed their in vitro tumor growth. Mechanistic studies revealed that activation of the ERK/MAPK pathway is driven by PHPT1. PHPT1 is required for maintaining drug resistance to erlotinib in EGFR mutant lung cancer cells. We found that FBXO32 acts as an E3 ubiquitin ligase for PHPT1, and that knockdown of FBXO32 leads to PHPT1 accumulation, activation of the ERK/MAPK pathway and promotion of the proliferation, clonogenicity and growth of lung cancer cells. CONCLUSIONS Our findings indicate that PHPT1 may serve as a biomarker and therapeutic target for acquired erlotinib resistance in lung cancer patients carrying EGFR mutations.
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Abstract
Breast cancer, with high morbidity worldwide, is a threat to the life of women. MiR-543 was identified as playing an active part in the development of breast cancer involving multiple molecules. The goal of this study was to explore the molecular mechanisms of the involvement of miR-543 in the development of breast cancer. Quantitative real-time PCR (qRT-PCR) or Western blotting was used to detect mRNA or protein expression. Cell counting kit-8 (CCK-8), and the 5-bromo-2ʹ-deoxyuridine (BrdU), wound healing, and Transwell assays were the main experimental procedures. Furthermore, subcutaneous tumor formation experiments were conducted to detect the function of miR-543 in breast cancer development in vivo. The match of miR-543 and ubiquitin-conjugating enzyme E2T (UBE2T) was detected through a dual-luciferase reporter experiment and RNA pull-down assay. Based on these results, miR-543 exhibited reduced expression in breast cancer tissues and cell lines, whereas UBE2T exhibited high levels. Furthermore, miR-543 directly targeted UBE2T, and a negative correlation between miR-543 and UBE2T was also observed in breast cancer tissues. Moreover, miR-543 overexpression led to inhibition of viability, proliferation, migration, and invasion of breast cancer. Furthermore, miR-543 overexpression undermined the UBE2T promotional effect by inhibiting ERK/MAPK pathway activity in breast cancer cells. Our study revealed that miR-543 impaired breast cancer progression by targeting UBE2T and downregulating UBE2T expression through the ERK/MAPK pathway, which suggested that miR-543 and UBE2T might serve as promising therapeutic gene targets for breast cancer in clinical application.
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Affiliation(s)
- Li Li
- Department of Thyroid and Breast Surgery, The Affiliated Hospital of Jianghan University, Wuhan 430015, Hubei, China
| | - Qing Li
- Department of Oncology, The Affiliated Hospital of Jianghan University, Wuhan 430015, Hubei, China
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Georgescu MM. Multi-Platform Classification of IDH-Wild-Type Glioblastoma Based on ERK/MAPK Pathway: Diagnostic, Prognostic and Therapeutic Implications. Cancers (Basel) 2021; 13:4532. [PMID: 34572759 PMCID: PMC8470497 DOI: 10.3390/cancers13184532] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 08/27/2021] [Accepted: 09/07/2021] [Indexed: 12/30/2022] Open
Abstract
Glioblastoma is the most aggressive and frequent glioma in the adult population. Because current therapy regimens confer only minimal survival benefit, molecular subgrouping to stratify patient prognosis and therapy design is warranted. This study presents a multi-platform classification of glioblastoma by analyzing a large, ethnicity-inclusive 101-adult-patient cohort. It defines seven non-redundant IDH-wild-type glioblastoma molecular subgroups, G1-G7, corresponding to the upstream receptor tyrosine kinase (RTK) and RAS-RAF segment of the ERK/MAPK signal transduction pathway. These glioblastoma molecular subgroups are classified as G1/EGFR, G2/FGFR3, G3/NF1, G4/RAF, G5/PDGFRA, G6/Multi-RTK, and G7/Other. The comprehensive genomic analysis was refined by expression landscaping of all RTK genes, as well as of the major associated growth pathway mediators, and used to hierarchically cluster the subgroups. Parallel demographic, clinical, and histologic pattern analyses were merged with the molecular subgrouping to yield the first inclusive multi-platform classification for IDH-wild-type glioblastoma. This straightforward classification with diagnostic and prognostic significance may be readily used in neuro-oncological practice and lays the foundation for personalized targeted therapy approaches.
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Jia T, Ren Y, Wang F, Zhao R, Qiao B, Xing L, Ou L, Guo B. MiR-148a inhibits oral squamous cell carcinoma progression through ERK/MAPK pathway via targeting IGF-IR. Biosci Rep 2020; 40:BSR20182458. [PMID: 32202300 DOI: 10.1042/BSR20182458] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [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] [Received: 01/03/2019] [Revised: 02/04/2020] [Accepted: 03/19/2020] [Indexed: 02/07/2023] Open
Abstract
OBJECTIVE The current study aimed to investigate the functional roles and clinical significance of microRNA-148a (miR-148a) in the progression of oral squamous cell carcinoma (OSCC). METHODS Relative expression of miR-148a in OSCC cells and tissues were detected using quantitative real-time polymerase chain reaction (qRT-PCR). Chi-square test was performed to estimate the relationship between miR-148a expression and clinical characteristics of OSCC patients. Cell transfection was carried out using Lipofectamine® 2000. Biological behaviors of tumor cells were detected using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) and transwell assays. Bioinformatics analysis and luciferase reporter assay were used to identify the target genes of miR-148a. Protein expression was detected through Western blot analysis. RESULTS MiR-148a expression was obviously decreased in OSCC tissues and cells, and such down-regulation was closely correlated with lymph node metastasis (P=0.027) and tumor node metastasis (TNM) stage (P=0.001) of OSCC patients. miR-148a overexpression could significantly impair OSCC cell proliferation, migration and invasion in vitro (P<0.05 for all). Insulin-like growth factor-I receptor (IGF-IR) was a potential target of miR-148a. MiR-148a could inhibit ERK/MAPK signaling pathway through targeting IGF-IR. CONCLUSION MiR-148a plays an anti-tumor role in OSCC and inhibits OSCC progression through suppressing ERK/MAPK pathway via targeting IGF-IR.
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Wen L, Miao Y, Fan Z, Zhang J, Guo Y, Dai D, Huang J, Liu Z, Chen R, Hu Z. Establishment of an Efficient Primary Culture System for Human Hair Follicle Stem Cells Using the Rho-Associated Protein Kinase Inhibitor Y-27632. Front Cell Dev Biol 2021; 9:632882. [PMID: 33748117 PMCID: PMC7973216 DOI: 10.3389/fcell.2021.632882] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [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: 11/24/2020] [Accepted: 02/15/2021] [Indexed: 12/11/2022] Open
Abstract
Background Hair follicle tissue engineering is a promising strategy for treating hair loss. Human hair follicle stem cells (hHFSCs), which play a key role in the hair cycle, have potential applications in regenerative medicine. However, previous studies did not achieve efficient hHFSC expansion in vitro using feeder cells. Therefore, there is a need to develop an efficient primary culture system for the expansion and maintenance of hHFSCs. Methods The hHFSCs were obtained by two-step proteolytic digestion combined with microscopy. The cell culture dishes were coated with human fibronectin and inoculated with hHFSCs. The hHFSCs were harvested using a differential enrichment procedure. The effect of Rho-associated protein kinase (ROCK) inhibitor Y-27632, supplemented in keratinocyte serum-free medium (K-SFM), on adhesion, proliferation, and stemness of hHFSCs and the underlying molecular mechanisms were evaluated. Results The hHFSCs cultured in K-SFM, supplemented with Y-27632, exhibited enhanced adhesion and proliferation. Additionally, Y-27632 treatment maintained the stemness of hHFSCs and promoted the ability of hHFSCs to regenerate hair follicles in vivo. However, Y-27632-induced proliferation and stemness in hHFSCs were conditional and reversible. Furthermore, Y-27632 maintained propagation and stemness of hHFSCs through the ERK/MAPK pathway. Conclusion An efficient short-term culture system for primary hHFSCs was successfully established using human fibronectin and the ROCK inhibitor Y-27632, which promoted the proliferation, maintained the stemness of hHFSCs and promoted the ability to regenerate hair follicles in vivo. The xenofree culturing method used in this study provided a large number of high-quality seed cells, which have applications in hair follicle tissue engineering and stem cell therapy.
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Affiliation(s)
- Lihong Wen
- Department of Plastic and Aesthetic Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yong Miao
- Department of Plastic and Aesthetic Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Zhexiang Fan
- Department of Plastic and Aesthetic Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Jiarui Zhang
- Department of Plastic and Aesthetic Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yixuan Guo
- Department of Plastic and Burn Surgery, Shenzhen Hospital, Southern Medical University, Shenzhen, China
| | - Damao Dai
- Department of Plastic and Aesthetic Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Junfei Huang
- Department of Plastic and Aesthetic Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Zhen Liu
- Department of Plastic and Aesthetic Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Ruosi Chen
- Department of Plastic and Aesthetic Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Zhiqi Hu
- Department of Plastic and Aesthetic Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
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Machado RAC, Stojevski D, De Landtsheer S, Lucarelli P, Baron A, Sauter T, Schaffner-Reckinger E. L-plastin Ser5 phosphorylation is modulated by the PI3K/SGK pathway and promotes breast cancer cell invasiveness. Cell Commun Signal 2021; 19:22. [PMID: 33618712 DOI: 10.1186/s12964-021-00710-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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] [Received: 10/13/2020] [Accepted: 01/18/2021] [Indexed: 01/15/2023] Open
Abstract
Background Metastasis is the predominant cause for cancer morbidity and mortality accounting for approximatively 90% of cancer deaths. The actin-bundling protein L-plastin has been proposed as a metastatic marker and phosphorylation on its residue Ser5 is known to increase its actin-bundling activity. We recently showed that activation of the ERK/MAPK signalling pathway leads to L-plastin Ser5 phosphorylation and that the downstream kinases RSK1 and RSK2 are able to directly phosphorylate Ser5. Here we investigate the involvement of the PI3K pathway in L-plastin Ser5 phosphorylation and the functional effect of this phosphorylation event in breast cancer cells. Methods To unravel the signal transduction network upstream of L-plastin Ser5 phosphorylation, we performed computational modelling based on immunoblot analysis data, followed by experimental validation through inhibition/overexpression studies and in vitro kinase assays. To assess the functional impact of L-plastin expression/Ser5 phosphorylation in breast cancer cells, we either silenced L-plastin in cell lines initially expressing endogenous L-plastin or neoexpressed L-plastin wild type and phosphovariants in cell lines devoid of endogenous L-plastin. The established cell lines were used for cell biology experiments and confocal microscopy analysis. Results Our modelling approach revealed that, in addition to the ERK/MAPK pathway and depending on the cellular context, the PI3K pathway contributes to L-plastin Ser5 phosphorylation through its downstream kinase SGK3. The results of the transwell invasion/migration assays showed that shRNA-mediated knockdown of L-plastin in BT-20 or HCC38 cells significantly reduced cell invasion, whereas stable expression of the phosphomimetic L-plastin Ser5Glu variant led to increased migration and invasion of BT-549 and MDA-MB-231 cells. Finally, confocal image analysis combined with zymography experiments and gelatin degradation assays provided evidence that L-plastin Ser5 phosphorylation promotes L-plastin recruitment to invadopodia, MMP-9 activity and concomitant extracellular matrix degradation. Conclusion Altogether, our results demonstrate that L-plastin Ser5 phosphorylation increases breast cancer cell invasiveness. Being a downstream molecule of both ERK/MAPK and PI3K/SGK pathways, L-plastin is proposed here as a potential target for therapeutic approaches that are aimed at blocking dysregulated signalling outcome of both pathways and, thus, at impairing cancer cell invasion and metastasis formation. Video abstract
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Zhang S, Liu J, Yuan T, Liu H, Wan C, Le Y. Circular RNA 0001313 Knockdown Suppresses Non-Small Cell Lung Cancer Cell Proliferation and Invasion via the microRNA-452/HMGB3/ERK/MAPK Axis. Int J Gen Med 2020; 13:1495-1507. [PMID: 33328759 PMCID: PMC7735797 DOI: 10.2147/ijgm.s272996] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [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: 07/20/2020] [Accepted: 11/10/2020] [Indexed: 12/19/2022] Open
Abstract
Background Non-small cell lung cancer (NSCLC) seriously endangers human health. Circular RNAs (circRNAs) regulate diverse types of cancers, including NSCLC. This study investigated the possible mechanism of circ0001313 in NSCLC. Materials and Methods Circ0001313 expression in NSCLC tissues was measured, and its correlation with clinicopathological features was analyzed. The binding relationships among circ0001313, microRNA (miR)-452 and HMGB3 were tested. The gain and loss of functions were performed to examine NSCLC cell malignant behaviors. After HMGB3 overexpression, ERK/MAPK pathway-related protein levels were detected. Subsequently, the rescue experiment was further performed using an ERK/MAPK pathway inhibitor PD98059. Results Abnormally elevated circ0001313 and decreased miR-452 in NSCLC cells were observed. Circ0001313 silencing or miR-452 overexpression significantly reduced NSCLC cell proliferation and invasion. Circ0001313 competitively bound to miR-452 to upregulate HMGB3, thus promoting NSCLC cell growth. HMGB3 overexpression activated the ERK/MAPK pathway to contribute to NSCLC development. Conclusion We highlighted that silencing of circ0001313 blunted the ERK/MAPK pathway via the miR-452/HMGB3 axis, thereby inhibiting NSCLC cell proliferation and invasion.
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Affiliation(s)
- Shihao Zhang
- Department of Respiratory and Critical Care Medicine, Ganzhou People's Hospital, Ganzhou 341000, Jiangxi, People's Republic of China
| | - Jiansheng Liu
- Department of Respiratory and Critical Care Medicine, Ganzhou People's Hospital, Ganzhou 341000, Jiangxi, People's Republic of China
| | - Taiwen Yuan
- Department of Respiratory and Critical Care Medicine, Ganzhou People's Hospital, Ganzhou 341000, Jiangxi, People's Republic of China
| | - Huiyu Liu
- Department of Respiratory and Critical Care Medicine, Ganzhou People's Hospital, Ganzhou 341000, Jiangxi, People's Republic of China
| | - Chengwei Wan
- Department of Respiratory and Critical Care Medicine, Ganzhou People's Hospital, Ganzhou 341000, Jiangxi, People's Republic of China
| | - Yonghong Le
- Department of Respiratory and Critical Care Medicine, Ganzhou People's Hospital, Ganzhou 341000, Jiangxi, People's Republic of China
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Zhang XJ, Qi GT, Zhang XM, Wang L, Li FF. lncRNA RHPN1-AS1 promotes the progression of endometrial cancer through the activation of ERK/MAPK pathway. J Obstet Gynaecol Res 2020; 47:533-543. [PMID: 33169491 DOI: 10.1111/jog.14548] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [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: 06/02/2020] [Revised: 09/22/2020] [Accepted: 10/16/2020] [Indexed: 01/21/2023]
Abstract
AIM This study aimed to investigate the function of long noncoding RNA RHPN1 antisense RNA 1 (lncRNA RHPN1-AS1) in the progression of endometrial cancer (EC) and its underlying molecular mechanisms. METHODS The RHPN1-AS1 expression was measured by quantitative reverse transcriptase-polymerase chain reaction (qRT-PCR) in EC tissues and cells. The cell clones, proliferation, cell cycle, apoptosis, migration and invasion in Ishikawa and HEC-1A cells were respectively measured by colony formation assay, cell counting kit-8 assay (CCK-8) assay, flow cytometry, wound healing assay and transwell assay. In addition, the protein expressions in Ishikawa and HEC-1A cells were measured using western blot and Immunofluorescence assay. RESULTS Our data showed the RHPN1-AS1 expression was significantly upregulated in both EC tissues and cells. The expression of RHPN1-AS1 was significantly correlated with FIGO stage, histological grade, and lymph node metastasis. Additionally, silencing RHPN1-AS1 could inhibit proliferation, cell cycle progression, migration and invasion, and also promote apoptosis in Ishikawa and HEC-1A cells. Moreover, silencing RHPN1-AS1 could markedly elevate the expressions of caspase-3 and Bax, but reduce the Bcl-2 expression in Ishikawa and HEC-1A cells. We also found that silencing RHPN1-AS1 could significantly inhibit the phosphorylation of MEK and ERK in Ishikawa and HEC-1A cells. After U0126 pretreatment, the inhibition effect of silencing RHPN1-AS1 on the phosphorylation of MEK and ERK was strengthened. CONCLUSION Our study demonstrated that RHPN1-AS1 could facilitate cell proliferation, migration and invasion, as well as inhibit apoptosis via activating ERK/MAPK pathway in EC.
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Affiliation(s)
- Xian-Juan Zhang
- Binzhou Medical University Hospital, Binzhou, Shandong, China
| | - Guang-Tao Qi
- Binzhou Medical University Hospital, Binzhou, Shandong, China
| | - Xiao-Min Zhang
- Binzhou Medical University Hospital, Binzhou, Shandong, China
| | - Li Wang
- Binzhou Medical University Hospital, Binzhou, Shandong, China
| | - Fang-Fang Li
- Binzhou Medical University Hospital, Binzhou, Shandong, China
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Wang Y, Wang M, Yu P, Zuo L, Zhou Q, Zhou X, Zhu H. MicroRNA-126 Modulates Palmitate-Induced Migration in HUVECs by Downregulating Myosin Light Chain Kinase via the ERK/MAPK Pathway. Front Bioeng Biotechnol 2020; 8:913. [PMID: 32850751 PMCID: PMC7411007 DOI: 10.3389/fbioe.2020.00913] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 05/29/2020] [Accepted: 07/15/2020] [Indexed: 12/23/2022] Open
Abstract
MicroRNA-126 (miR-126) is an endothelial-specific microRNA that has shown beneficial effects on endothelial dysfunction. However, the underlying molecular mechanism is unclear. The present study evaluated the effects of miR-126 on the cell migration and underlying mechanism in HUVECs treated with palmitate. The present results demonstrated that overexpression of miR-126 was found to decrease cell migration in palmitate-treated HUVECs, with decreased MLCK expression and subsequent decreased phosphorylated MLC level. miR-126 also decreased the phosphorylation of MYPT1 in palmitate-treated HUVECs. In addition, it was demonstrated that miR-126 decreases expression of the NADPH oxidase subunits, p67 and Rac family small GTPase 1 with a subsequent decrease in cell apoptosis. Moreover, the phosphorylation of ERK was reduced by miR-126 in palmitate-induced HUVECs. Taken together, the present study showed that the effect of miR-126 on cell migration and cell apoptosis is mediated through downregulation of MLCK via the ERK/MAPK pathway.
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Affiliation(s)
- Yi Wang
- Department of Biological Engineering, School of Life Sciences, Anhui Medical University, Hefei, China.,Laboratory of Molecular Biology and Department of Biochemistry, Anhui Medical University, Hefei, China
| | - Mei Wang
- General Department of Hyperbaric Oxygen, Hefei Hospital Affiliated to Anhui Medical University, Hefei, China
| | - Pei Yu
- Laboratory of Molecular Biology and Department of Biochemistry, Anhui Medical University, Hefei, China
| | - Li Zuo
- Laboratory of Molecular Biology and Department of Biochemistry, Anhui Medical University, Hefei, China
| | - Qing Zhou
- Laboratory of Molecular Biology and Department of Biochemistry, Anhui Medical University, Hefei, China
| | - Xiaomei Zhou
- General Department of Hyperbaric Oxygen, Hefei Hospital Affiliated to Anhui Medical University, Hefei, China
| | - Huaqing Zhu
- Laboratory of Molecular Biology and Department of Biochemistry, Anhui Medical University, Hefei, China
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Wu J, Meng X, Jia Y, Chai J, Wang J, Xue X, Dang T. Long non-coding RNA HNF1A-AS1 upregulates OTX1 to enhance angiogenesis in colon cancer via the binding of transcription factor PBX3. Exp Cell Res 2020; 393:112025. [PMID: 32325080 DOI: 10.1016/j.yexcr.2020.112025] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [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: 09/12/2019] [Revised: 03/25/2020] [Accepted: 04/17/2020] [Indexed: 12/21/2022]
Abstract
Colon cancer shows characteristics of metastasis, which is associated with angiogenesis. Increasing evidence highlights long non-coding RNAs (lncRNAs) as important participants in angiogenesis of cancers, including colon cancer. Hence, this study investigated the role of HNF1A-AS1 in angiogenesis of colon cancer. RT-qPCR and Western blot analysis were applied to detect HNF1A-AS1 and OTX1 expression in colon cancer tissues and cell lines. Then the interactions among HNF1A-AS1, PBX3, OTX1 and ERK/MAPK pathway were evaluated with RNA pull-down, RIP, ChIP and dual-luciferase reporter gene assays. Next, HCT116 and SW620 cells were treated with si-HNF1A-AS1 and/or oe-OTX1 plasmids to assess the effects of HNF1A-AS1 and OTX1 on angiogenesis, which was further evaluated in nude mice injected with SW620 cells transfected with sh-HNF1A-AS1 or sh-OTX1 lentivirus. HNF1A-AS1 and OTX1 were highly expressed in colon cancer. Silencing of HNF1A-AS1 inhibited angiogenesis of colon cancer in vivo and in vitro. HNF1A-AS1 increased the OTX1 expression by binding to transcription factor PBX3 to promote angiogenesis in colon cancer. Further, HNF1A-AS1 upregulated OTX1 to activate the ERK/MAPK pathway. Altogether, our findings identified HNF1A-AS1 as a tumor-promoting RNA in colon cancer, which could serve as a potential therapeutic target for colon cancer treatment.
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Affiliation(s)
- Jinbao Wu
- Inner Mongolia Institute of Digestive Diseases, The Second Affiliated Hospital of Baotou Medical College, Inner Mongolia University of Science and Technology, Baotou, 014030, PR China.
| | - Xianmei Meng
- Inner Mongolia Institute of Digestive Diseases, The Second Affiliated Hospital of Baotou Medical College, Inner Mongolia University of Science and Technology, Baotou, 014030, PR China.
| | - Yanbin Jia
- Inner Mongolia Institute of Digestive Diseases, The Second Affiliated Hospital of Baotou Medical College, Inner Mongolia University of Science and Technology, Baotou, 014030, PR China; Nursing College of Baotou Medical College, Inner Mongolia University of Science and Technology, Baotou, 014030, PR China.
| | - Jianyuan Chai
- Inner Mongolia Institute of Digestive Diseases, The Second Affiliated Hospital of Baotou Medical College, Inner Mongolia University of Science and Technology, Baotou, 014030, PR China.
| | - Jing Wang
- Inner Mongolia Institute of Digestive Diseases, The Second Affiliated Hospital of Baotou Medical College, Inner Mongolia University of Science and Technology, Baotou, 014030, PR China.
| | - Xiaohui Xue
- Inner Mongolia Institute of Digestive Diseases, The Second Affiliated Hospital of Baotou Medical College, Inner Mongolia University of Science and Technology, Baotou, 014030, PR China.
| | - Tong Dang
- Inner Mongolia Institute of Digestive Diseases, The Second Affiliated Hospital of Baotou Medical College, Inner Mongolia University of Science and Technology, Baotou, 014030, PR China.
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Sheng W, Shi X, Lin Y, Tang J, Jia C, Cao R, Sun J, Wang G, Zhou L, Dong M. Musashi2 promotes EGF-induced EMT in pancreatic cancer via ZEB1-ERK/MAPK signaling. J Exp Clin Cancer Res 2020; 39:16. [PMID: 31952541 PMCID: PMC6967093 DOI: 10.1186/s13046-020-1521-4] [Citation(s) in RCA: 71] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Accepted: 01/06/2020] [Indexed: 12/19/2022]
Abstract
Background Our previous study showed Musashi2 (MSI2) promoted chemotherapy resistance and pernicious biology of pancreatic cancer (PC) by down-regulating Numb and p53. We further explored the novel molecular mechanism involving its oncogenic role in PC development. Methods We investigated the potential role and mechanism of MSI2 in EGF-induced EMT in PC in vitro and vivo. Results EGF enhanced EGFR (epidermal growth factor receptor) phosphorylation, induced EMT and activated ZEB1-ERK/MAPK signaling in 2 PC cells. However, MSI2 silencing reversed EGF stimulated function, including inhibiting EGF-promoted EMT-like cell morphology and EGF-enhanced cell invasion and migration. Meanwhile, MSI2 silencing inhibited EGF-enhanced EGFR phosphorylation at tyrosine 1068 and reversed EGF-induced change of the key proteins in EMT and ZEB1-ERK/MAPK signaling (ZEB1, E-cad, ZO-1, β-catenin, pERK and c-Myc). Additionally, MSI2 was co-stained and co-immunoprecipitated with ZEB1, pERK and c-Myc in PC cells by IF and co-IP, implying a close interaction between them. In vivo, MSI2 silencing inhibited pancreatic tumor size in situ and distant liver metastases. A close relationship of MSI2 with EMT and ZEB1-ERK/MAPK signaling were also observed in vivo and human PC samples, which coordinately promoted the poor prognosis of PC patients. Conclusions MSI2 promotes EGF-induced EMT in PC via ZEB1-ERK/MAPK signaling.
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Affiliation(s)
- Weiwei Sheng
- Department of Gastrointestinal Surgery, the First Hospital, China Medical University, Shenyang, 110001, China
| | - Xiaoyang Shi
- Department of Gastrointestinal Surgery, the First Hospital, China Medical University, Shenyang, 110001, China
| | - Yiheng Lin
- Department of Gastrointestinal Surgery, the First Hospital, China Medical University, Shenyang, 110001, China
| | - Jingtong Tang
- Department of Gastrointestinal Surgery, the First Hospital, China Medical University, Shenyang, 110001, China
| | - Chao Jia
- Department of Gastrointestinal Surgery, the First Hospital, China Medical University, Shenyang, 110001, China
| | - Rongxian Cao
- Department of General Surgery, the People's Hospital of Liaoning province, Shenyang, 110034, China
| | - Jian Sun
- Department of Gastrointestinal Surgery, the First Hospital, China Medical University, Shenyang, 110001, China
| | - Guosen Wang
- Department of General Surgery, the First Hospital of Nanchang University, NanChang, 330006, China
| | - Lei Zhou
- Department of General Surgery, the Central Hospital of JingZhou City, JingZhou, 434020, China
| | - Ming Dong
- Department of Gastrointestinal Surgery, the First Hospital, China Medical University, Shenyang, 110001, China.
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Pandian J, Panneerpandian P, Devanandan HJ, Sekar BT, Balakrishnan K, Selvarasu K, Muthupandi K, Ganesan K. Identification of the targeted therapeutic potential of doxycycline for a subset of gastric cancer patients. Ann N Y Acad Sci 2020; 1467:94-111. [PMID: 31944316 DOI: 10.1111/nyas.14288] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [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: 02/22/2019] [Revised: 11/11/2019] [Accepted: 11/20/2019] [Indexed: 12/26/2022]
Abstract
The identification of new drugs for the targeted therapy of gastric cancer remains an important need. The RAS/RAF/MEK/ERK/ELK1 signaling cascade is activated in many cancers, including gastric cancer. To identify the targetable inhibitors of the ERK/MAPK pathway, we performed a repurposing screening of a panel of antimicrobial agents in gastric cancer cells using an ERK/MAPK-driven firefly luciferase reporter assay. Multiple antibiotics were identified to inhibit ERK-mediated transcriptional activity. Among them, doxycycline showed high inhibition of ERK/MAPK-regulated transcriptional activity and the levels of ERK proteins. Doxycycline was further identified to inhibit the proliferation and the colony- and spheroid-forming potential of gastric cancer cells. By in vitro signaling pathway and genome-wide expression profiling analyses, doxycycline was identified to inhibit signaling pathways and transcriptional activities regulated by ER, Myc, E2F1, Wnt, SMAD2/3/4, Notch, and OCT4. Doxycycline was also found to activate p53-, ATF6-, NRF1/2-, and MTF1-mediated transcription and inhibit the transcription of histones, proteasomal genes, fibroblast growth factor, and other oncogenic factors. These observations show the multitargeting and targeted therapeutic features of doxycycline for a subset of gastric tumors.
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Affiliation(s)
- Jaishree Pandian
- Unit of Excellence in Cancer Genetics, Department of Genetics, Centre for Excellence in Genomic Sciences, School of Biological Sciences, Madurai Kamaraj University, Madurai, India
| | - Ponmathi Panneerpandian
- Unit of Excellence in Cancer Genetics, Department of Genetics, Centre for Excellence in Genomic Sciences, School of Biological Sciences, Madurai Kamaraj University, Madurai, India
| | - Helen Jemimah Devanandan
- Unit of Excellence in Cancer Genetics, Department of Genetics, Centre for Excellence in Genomic Sciences, School of Biological Sciences, Madurai Kamaraj University, Madurai, India
| | - Balaji T Sekar
- Unit of Excellence in Cancer Genetics, Department of Genetics, Centre for Excellence in Genomic Sciences, School of Biological Sciences, Madurai Kamaraj University, Madurai, India
| | - Karthik Balakrishnan
- Unit of Excellence in Cancer Genetics, Department of Genetics, Centre for Excellence in Genomic Sciences, School of Biological Sciences, Madurai Kamaraj University, Madurai, India
| | - Karthikeyan Selvarasu
- Unit of Excellence in Cancer Genetics, Department of Genetics, Centre for Excellence in Genomic Sciences, School of Biological Sciences, Madurai Kamaraj University, Madurai, India
| | - Karthikeyan Muthupandi
- Unit of Excellence in Cancer Genetics, Department of Genetics, Centre for Excellence in Genomic Sciences, School of Biological Sciences, Madurai Kamaraj University, Madurai, India
| | - Kumaresan Ganesan
- Unit of Excellence in Cancer Genetics, Department of Genetics, Centre for Excellence in Genomic Sciences, School of Biological Sciences, Madurai Kamaraj University, Madurai, India
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Yu Y, Zhang Y, Wang S, Liu W, Hao C, Wang W. Inhibition effects of patchouli alcohol against influenza a virus through targeting cellular PI3K/Akt and ERK/MAPK signaling pathways. Virol J 2019; 16:163. [PMID: 31870450 PMCID: PMC6929483 DOI: 10.1186/s12985-019-1266-x] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [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: 07/17/2019] [Accepted: 12/05/2019] [Indexed: 01/30/2023] Open
Abstract
Background Patchouli alcohol (PA) is a tricyclic sesquiterpene extracted from Pogostemonis Herba, which is a traditional Chinese medicine used for therapy of inflammatory diseases. Recent studies have shown that PA has various pharmacological activities, including anti-bacterial and anti-viral effects. Methods In this study, the anti-influenza virus (IAV) activities and mechanisms were investigated both in vitro and in vivo. The inhibitory effects of PA against IAV in vitro were evaluated by plaque assay and immunofluorescence assay. The neuraminidase inhibition assay, hemagglutination inhibition (HI) assay, and western blot assay were used to explore the anti-viral mechanisms. The anti-IAV activities in vivo were determined by mice pneumonia model and HE staining. Results The results showed that PA significantly inhibited different IAV strains multiplication in vitro, and may block IAV infection through inactivating virus particles directly and interfering with some early stages after virus adsorption. Cellular PI3K/Akt and ERK/MAPK signaling pathways may be involved in the anti-IAV actions of PA. Intranasal administration of PA markedly improved mice survival and attenuated pneumonia symptoms in IAV infected mice, comparable to the effects of Oseltamivir. Conclusions Therefore, Patchouli alcohol has the potential to be developed into a novel anti-IAV agent in the future.
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Affiliation(s)
- Yunjia Yu
- Key Laboratory of Marine Drugs, Ministry of Education, Ocean University of China, Qingdao, 266003, People's Republic of China
| | - Yang Zhang
- Key Laboratory of Marine Drugs, Ministry of Education, Ocean University of China, Qingdao, 266003, People's Republic of China
| | - Shuyao Wang
- Key Laboratory of Marine Drugs, Ministry of Education, Ocean University of China, Qingdao, 266003, People's Republic of China
| | - Wei Liu
- Key Laboratory of Marine Drugs, Ministry of Education, Ocean University of China, Qingdao, 266003, People's Republic of China
| | - Cui Hao
- Systems Biology & Medicine Center for Complex Diseases, Affiliated Hospital of Qingdao University, Qingdao, 266003, People's Republic of China.
| | - Wei Wang
- Key Laboratory of Marine Drugs, Ministry of Education, Ocean University of China, Qingdao, 266003, People's Republic of China. .,Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237, People's Republic of China.
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He C, Bai X, Li Y, Sun H, Kong X, Fu B, Chen L, Zhu K, Li P, Xu S. Runt-related transcription factor 1 contributes to lung cancer development by binding to tartrate-resistant acid phosphatase 5. Cell Cycle 2019; 18:3404-3419. [PMID: 31650885 DOI: 10.1080/15384101.2019.1678966] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [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: 12/12/2022] Open
Abstract
Lung cancer (LC) is one of the malignant tumors with growing morbidity and mortality. The involvement of runt-related transcription factor 1 (RUNX1) in LC patients has been elucidated. We intended to research mechanisms of RUNX1 and tartrate-resistant acid phosphatase 5 (ACP5) in LC. Firstly, ACP5 levels in LC tissues, paracancerous tissues, LC cells and tracheal epithelial cells were detected. RUNX1 overexpression plasmid and interference plasmid were constructed and transfected into 95C cells and A549 cells, respectively. The binding of RUNX1 to ACP5 promoter was tested. Additionally, the gain- and loss-of-function were performed to explore the effects of ACP5 and RUNX1 on LC biological process. The xenograft tumor in nude mice was constructed in vivo to verify in vitro results. Functional rescue experiment was performed by adding MAPK-specific activator P79350 to A549 cells with si-ACP5 to measure the effects of ERK/MAPK axis on LC progression. Consequently, we found ACP5 expression was higher in LC tissues and cells, and ACP5 silencing suppressed LC cell growth. Overexpression of ACP5 promoted malignant biological behavior of LC cells. RUNX1 could bind to ACP5 promoter, and overexpressed RUNX1 promoted ACP5 expression and LC cell growth. Moreover, ACP5 upregulated the ERK/MAPK axis and thus promoted LC progression. The results of xenograft tumor in nude mice showed that silencing ACP5 could inhibit the growth of LC cells in vivo. To conclude, silenced RUNX1 inhibits LC progression through the ERK/MAPK axis by binding to ACP5. This study may provide new approaches for LC treatment.
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Affiliation(s)
- Changjun He
- Department of Thoracic Surgery, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang, P.R. China
| | - Xue Bai
- Department of Thoracic Surgery, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang, P.R. China
| | - Yingbin Li
- Department of Surgery, First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, P.R.China
| | - Haobo Sun
- Department of Thoracic Surgery, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang, P.R. China
| | - Xianglong Kong
- Department of Thoracic Surgery, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang, P.R. China
| | - Bicheng Fu
- Department of Thoracic Surgery, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang, P.R. China
| | - Lantao Chen
- Department of Thoracic Surgery, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang, P.R. China
| | - Kaibin Zhu
- Department of Thoracic Surgery, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang, P.R. China
| | - Pengju Li
- Department of Thoracic Surgery, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang, P.R. China
| | - Shidong Xu
- Department of Thoracic Surgery, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang, P.R. China
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22
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Chew CL, Conos SA, Unal B, Tergaonkar V. Noncoding RNAs: Master Regulators of Inflammatory Signaling. Trends Mol Med 2017; 24:66-84. [PMID: 29246760 DOI: 10.1016/j.molmed.2017.11.003] [Citation(s) in RCA: 130] [Impact Index Per Article: 18.6] [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: 10/03/2017] [Revised: 11/13/2017] [Accepted: 11/14/2017] [Indexed: 12/15/2022]
Abstract
Inflammatory signaling underlies many diseases, from arthritis to cancer. Our understanding of inflammation has thus far been limited to the world of proteins, because we are only just beginning to understand the role that noncoding RNAs (ncRNA) might play. It is now clear that ncRNA do not constitute transcriptional 'noise' but instead harbor physiological functions in controlling signaling pathways. In this review, we cover the newly discovered mechanisms and functions of ncRNAs in the regulation of inflammatory signaling. We also describe advances in experimental techniques allowing this field of research to take root. These findings have opened new avenues for putative therapeutic intervention in inflammatory diseases, which may be seen translated into clinical outcomes in the future.
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Affiliation(s)
- Chen Li Chew
- Institute of Molecular and Cell Biology (IMCB), A*STAR (Agency for Science, Technology and Research), Singapore 138673, Singapore; These authors contributed equally
| | - Stephanie Ana Conos
- Institute of Molecular and Cell Biology (IMCB), A*STAR (Agency for Science, Technology and Research), Singapore 138673, Singapore; These authors contributed equally
| | - Bilal Unal
- Institute of Molecular and Cell Biology (IMCB), A*STAR (Agency for Science, Technology and Research), Singapore 138673, Singapore; Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore (NUS), Singapore 117597, Singapore
| | - Vinay Tergaonkar
- Institute of Molecular and Cell Biology (IMCB), A*STAR (Agency for Science, Technology and Research), Singapore 138673, Singapore; Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore (NUS), Singapore 117597, Singapore; Cancer Science Institute of Singapore, Singapore 117599, Singapore; Centre for Cancer Biology (University of South Australia and SA Pathology), Adelaide, SA 5000, Australia.
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23
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Buchegger K, Silva R, López J, Ili C, Araya JC, Leal P, Brebi P, Riquelme I, Roa JC. The ERK/MAPK pathway is overexpressed and activated in gallbladder cancer. Pathol Res Pract 2017; 213:476-82. [PMID: 28285962 DOI: 10.1016/j.prp.2017.01.025] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Revised: 01/27/2017] [Accepted: 01/30/2017] [Indexed: 12/13/2022]
Abstract
Gallbladder cancer (GBC) is a highly fatal disease with poor prognosis and few therapeutic alternatives. Molecular profiling has revealed that the deregulation in the ERK/MAPK signaling pathway plays a crucial role in many disease and malignancies, including GBC. The aim of this study was to measure the expression of ERK1/2 and p-ERK1/2 in a population with high GBC-related mortality, such as the Chilean population, and characterize the protein expression of this ERK/MAPK pathway in seven GBC cell lines. Immunohistochemistry (IHC) for ERK1/2 and p-ERK1/2 was performed in 123 GBC tissues and 37 chronic cholecystitis (CC) tissues. In addition, protein expression analysis by western blot for ERK1/2, p-ERK1/2, EGFR, ERBB2 and ERBB3 were performed in seven GBC cell lines (GB-d1, G415, NOZ, OCUG-1, TGBC-1, TGBC-2 and TGBC-24). A higher ERK1/2 and p-ERK1/2 expression was found in GBC tissues compared to chronic cholecystitis (CC) tissues (P<0.001). However, neither significant differences in overall survival nor significant associations with any of the clinicopathological features were found by comparing low and high expression of both ERK1/2 and p-ERK1/2. Western blot analysis of seven GBC cell lines showed that, in general, GB-d1, G415 and NOZ cells evidenced a strong expression of ERK1/2, p-ERK1/2, EGFR, ERBB2 and ERBB3. Therefore, ERK1/2 and p-ERK1/2 seem to be important in the development of GBC and GB-d1, G415 and NOZ cell lines may be used as experimental models for further in vitro and in vivo studies that help to decipher the role of MAPK/ERK pathway in gallbladder carcinogenesis.
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24
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Dai M, Feng M, Liao M, Cao W. Inhibition of ERK/MAPK suppresses avian leukosis virus subgroup A and B replication. Microb Pathog 2016; 102:29-35. [PMID: 27890652 DOI: 10.1016/j.micpath.2016.11.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [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: 07/12/2016] [Revised: 11/10/2016] [Accepted: 11/10/2016] [Indexed: 10/20/2022]
Abstract
We have previously shown that the extracellular signal-regulated kinase/mitogen-activated protein kinase (ERK/MAPK) pathway contributes to subgroup J avian leukosis virus (ALV-J) replication and tumorigenicity. However, a role for ERK/MAPK signaling in ALV-A and ALV-B replication is unknown. In this study we successfully constructed and recovered a recombinant form of ALV-A strain GD13-1 which showed similarities in growth to the parental wild type virus in vitro. ALV subgroups J, A or B all triggered ERK2 activation in primary CEF cells. ERK/MAPK inhibition markedly suppressed ALV-A and ALV-B replication as shown by extremely low levels of viral transcription and virus protein production. This finding provides evidence that ERK/MAPK signaling responses play important roles in ALV replication and may represent novel drug targets for therapeutic intervention strategies.
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Affiliation(s)
- Manman Dai
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, People's Republic of China; National and Regional Joint Engineering Laboratory for Medicament of Zoonosis Prevention and Control, People's Republic of China; Key Laboratory of Veterinary Vaccine Innovation of the Ministry of Agriculture, People's Republic of China; Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, People's Republic of China.
| | - Min Feng
- College of Animal Science, South China Agricultural University, Guangzhou, 510642, People's Republic of China.
| | - Ming Liao
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, People's Republic of China; National and Regional Joint Engineering Laboratory for Medicament of Zoonosis Prevention and Control, People's Republic of China; Key Laboratory of Veterinary Vaccine Innovation of the Ministry of Agriculture, People's Republic of China; Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, People's Republic of China.
| | - Weisheng Cao
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, People's Republic of China; National and Regional Joint Engineering Laboratory for Medicament of Zoonosis Prevention and Control, People's Republic of China; Key Laboratory of Veterinary Vaccine Innovation of the Ministry of Agriculture, People's Republic of China; Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, People's Republic of China.
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Abstract
Preeclampsia (PE) is a pregnancy-specific condition characterized by new-onset hypertension. There is evidence suggesting that imbalances of angiogenic factors, oxidative stress, and inflammation may be central to the pathogenesis of PE. We sought to investigate whether simvastatin would reduce mean arterial pressure, restore the angiogenic balance, and ameliorate inflammation and oxidative stress in a nitric oxide synthase inhibitor NG-nitro-l-arginine methyl ester (l-NAME)-induced rat model of PE. We found that blood pressure was significantly increased in the l-NAME group compared to normal pregnant dams ( P < .01), and simvastatin reduced this difference. In addition, dams from the l-NAME group showed lower vascular endothelial growth factor (VEGF) and interleukin (IL) 10 levels and higher plasma-soluble FMS-like tyrosine kinase 1 (sFlt-1), tumor necrosis factor α (TNF-α), and oxidative stress marker malondialdehyde (MDA) levels as compared to control dams ( P < .01, for all). Interestingly, simvastatin treatment significantly increased VEGF and IL-10 levels while decreased sFlt-1, TNF-α, and MDA levels compared to the untreated l-NAME group. Moreover, simvastatin treatment significantly upregulated protein expression of placental p-extracellular signal-regulated kinase (ERK1), p-p38 mitogen-activated protein kinase (MAPK), p-c-Jun N-terminal kinase, and p-protein kinase B compared to untreated l-NAME control. These results suggest that simvastatin treatment restores angiogenic balance and ameliorates inflammation and oxidative stress in a rat model of PE involving ERK/MAPK pathway.
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Affiliation(s)
- Xiujuan Dong
- 1 Department of Obstetrics, Cangzhou City Central Hospital, Cangzhou, China
| | - Dandan Shi
- 1 Department of Obstetrics, Cangzhou City Central Hospital, Cangzhou, China
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Wang J, Li J. Activated protein C: a potential cardioprotective factor against ischemic injury during ischemia/reperfusion. Am J Transl Res 2009; 1:381-392. [PMID: 19956450 PMCID: PMC2780036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2009] [Accepted: 07/05/2009] [Indexed: 05/28/2023]
Abstract
Activated protein C (APC) is a vitamin-K dependent natural anticoagulant protein. With its function in blood clotting reaction, APC can reduce the risk of venous thrombosis to prevent ischemic disease. A number of in vivo and in vitro studies over the past few decades have revealed that APC also exerted cytoprotective effects to decrease the mortality caused by endotoxin, sepsis, and brain ischemic stroke. The direct cytoprotective role requires APC binding to the endothelial protein C receptor (EPCR) and activating protease activated receptor-1 (PAR-1). It is now believed that the beneficial characters of APC are partially independent from its anticoagulant activity, though more studies need to be done to demonstrate the exact molecular mechanism. In this review, we have linked the cytoprotective effects of APC including the anti-inflammatory and anti-apoptosis activities to myocardial ischemic injury caused by cardiac ischemia reperfusion. Specifically, we have tried to combine the potential signaling pathways initiated by APC with the well-known adaptive signaling such as AMP-activated protein kinase (AMPK), PI3K/Akt and ERK/MAPK pathways that contribute to the cardioprotection against myocardial ischemia injury. We speculate that APC protects against cardiac ischemia injury via triggering crucial cardioprotective signaling pathways, and these effects are mostly associated with its cytoprotective activity but independent on its anticoagulant activity.
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Affiliation(s)
- Jingying Wang
- Department of Pharmacology and Toxicology, University at Buffalo, State University of New York Buffalo, NY
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