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Su G, Liu T, Han X, Sun H, Che W, Hu K, Xiao J, Li Y, Liu Y, Li W, Mei H. YTHDF2 is a Potential Biomarker and Associated with Immune Infiltration in Kidney Renal Clear Cell Carcinoma. Front Pharmacol 2021; 12:709548. [PMID: 34512342 PMCID: PMC8429956 DOI: 10.3389/fphar.2021.709548] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [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: 05/14/2021] [Accepted: 06/07/2021] [Indexed: 02/05/2023] Open
Abstract
Clear cell renal cell carcinoma (ccRCC or KIRC) has a high mortality rate globally. It is necessary to identify biomarkers and investigate the mechanisms those biomarkers are associated with, to improve the prognosis of patients with KIRC. N6-Methyladenosine (m6A) affects the fate of modified RNA molecules and is involved in tumor progression. Different webservers were used in our research to investigate the mRNA transcription and clinical significance of YTHDF2 in KIRC. Survival analysis revealed that patients with elevated YTHDF2 transcription had a slightly longer OS and DFS than those with low YTHDF2 expression. YTHDF2 expression was shown to be significantly associated with the abundance of immune cells such as B cells, CD8+ T cells, CD4+ T cells, macrophages, neutrophils, and dendritic cells. For a series of enrichment studies, we combined information on YTHDF2-binding molecules and expression-linked genes and identified the possible influence of "mRNA surveillance pathway," "RNA degradation," and "RNA transport" in the biology or pathogeny of KIRC. In addition, we identified multiple miRNA, kinase, and transcription factor targets of YTHDF2 in KIRC and constructed target networks. Overall, our findings show that YTHDF2 is a possible indicator of immune infiltration in the KIRC.
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Affiliation(s)
- Ganglin Su
- Department of Urology, the First Affiliated Hospital of Shenzhen University, Shenzhen Second People’s Hospital, Shenzhen, China
- Shantou University Medical College, Shantou, China
- Key Laboratory of Medical Reprogramming Technology, the First Affiliated Hospital of Shenzhen University, Shenzhen Second People’s Hospital, Shenzhen, China
- Guangdong Key Laboratory of Systems Biology and Synthetic Biology for Urogenital Tumors, the First Affiliated Hospital of Shenzhen University, Shenzhen Second People’s Hospital, Shenzhen, China
| | - Tianshu Liu
- Department of Urology, the First Affiliated Hospital of Shenzhen University, Shenzhen Second People’s Hospital, Shenzhen, China
| | - Xiaohong Han
- Department of Urology, the First Affiliated Hospital of Shenzhen University, Shenzhen Second People’s Hospital, Shenzhen, China
| | - Hao Sun
- Department of Urology, the First Affiliated Hospital of Shenzhen University, Shenzhen Second People’s Hospital, Shenzhen, China
- Key Laboratory of Medical Reprogramming Technology, the First Affiliated Hospital of Shenzhen University, Shenzhen Second People’s Hospital, Shenzhen, China
- Guangdong Key Laboratory of Systems Biology and Synthetic Biology for Urogenital Tumors, the First Affiliated Hospital of Shenzhen University, Shenzhen Second People’s Hospital, Shenzhen, China
| | - Wenan Che
- Hunan Key Laboratory of Economic Crops Genetic Improvement and Integrated Utilization, School of Life Sciences, Hunan University of Science and Technology, Xiangtan, China
| | - Kun Hu
- Department of Urology, the First Affiliated Hospital of Shenzhen University, Shenzhen Second People’s Hospital, Shenzhen, China
- Key Laboratory of Medical Reprogramming Technology, the First Affiliated Hospital of Shenzhen University, Shenzhen Second People’s Hospital, Shenzhen, China
- Guangdong Key Laboratory of Systems Biology and Synthetic Biology for Urogenital Tumors, the First Affiliated Hospital of Shenzhen University, Shenzhen Second People’s Hospital, Shenzhen, China
| | - Junwen Xiao
- Department of Urology, the First Affiliated Hospital of Shenzhen University, Shenzhen Second People’s Hospital, Shenzhen, China
- Key Laboratory of Medical Reprogramming Technology, the First Affiliated Hospital of Shenzhen University, Shenzhen Second People’s Hospital, Shenzhen, China
- Guangdong Key Laboratory of Systems Biology and Synthetic Biology for Urogenital Tumors, the First Affiliated Hospital of Shenzhen University, Shenzhen Second People’s Hospital, Shenzhen, China
| | - Yanfeng Li
- Department of Urology, the First Affiliated Hospital of Shenzhen University, Shenzhen Second People’s Hospital, Shenzhen, China
- Key Laboratory of Medical Reprogramming Technology, the First Affiliated Hospital of Shenzhen University, Shenzhen Second People’s Hospital, Shenzhen, China
- Guangdong Key Laboratory of Systems Biology and Synthetic Biology for Urogenital Tumors, the First Affiliated Hospital of Shenzhen University, Shenzhen Second People’s Hospital, Shenzhen, China
| | - Yuchen Liu
- Department of Urology, the First Affiliated Hospital of Shenzhen University, Shenzhen Second People’s Hospital, Shenzhen, China
- Key Laboratory of Medical Reprogramming Technology, the First Affiliated Hospital of Shenzhen University, Shenzhen Second People’s Hospital, Shenzhen, China
- Guangdong Key Laboratory of Systems Biology and Synthetic Biology for Urogenital Tumors, the First Affiliated Hospital of Shenzhen University, Shenzhen Second People’s Hospital, Shenzhen, China
- *Correspondence: Yuchen Liu, ; Wujiao Li, ; Hongbing Mei,
| | - Wujiao Li
- Key Laboratory of Medical Reprogramming Technology, the First Affiliated Hospital of Shenzhen University, Shenzhen Second People’s Hospital, Shenzhen, China
- Guangdong Key Laboratory of Systems Biology and Synthetic Biology for Urogenital Tumors, the First Affiliated Hospital of Shenzhen University, Shenzhen Second People’s Hospital, Shenzhen, China
- *Correspondence: Yuchen Liu, ; Wujiao Li, ; Hongbing Mei,
| | - Hongbing Mei
- Department of Urology, the First Affiliated Hospital of Shenzhen University, Shenzhen Second People’s Hospital, Shenzhen, China
- Key Laboratory of Medical Reprogramming Technology, the First Affiliated Hospital of Shenzhen University, Shenzhen Second People’s Hospital, Shenzhen, China
- Guangdong Key Laboratory of Systems Biology and Synthetic Biology for Urogenital Tumors, the First Affiliated Hospital of Shenzhen University, Shenzhen Second People’s Hospital, Shenzhen, China
- *Correspondence: Yuchen Liu, ; Wujiao Li, ; Hongbing Mei,
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Che W, Ye S, Cai A, Cui X, Sun Y. CRISPR-Cas13a Targeting the Enhancer RNA-SMAD7e Inhibits Bladder Cancer Development Both in vitro and in vivo. Front Mol Biosci 2020; 7:607740. [PMID: 33282916 PMCID: PMC7705062 DOI: 10.3389/fmolb.2020.607740] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [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: 09/18/2020] [Accepted: 10/22/2020] [Indexed: 12/26/2022] Open
Abstract
Enhancers are cis-acting elements that can promote the expression of target genes and respond to estrogen to induce the transcription of eRNAs, which are closely associated with cancer development. Further study on eRNAs may lead to a better understanding of the significance of transcriptional regulation and the progression of malignant tumors. SMAD7 enhancer RNA (SMAD7e) is an estrogen-responsive eRNA. However, the relationship between SMAD7e and bladder cancer remains unclear. SMAD7e was significantly upregulated in bladder cancer tissues and estrogen-stimulated cells. Knockdown of SMAD7e by CRISPR-Cas13a suppressed cell proliferation and migration, and induced cell apoptosis and inhibited cell invasion. Estrogen caused overexpression of SMAD7e and played a facilitating role in bladder cancer cells. Furthermore, knockdown of SMAD7e by CRISPR-Cas13a prevented the cancer-promoting effects of estrogen on bladder cancer both in vitro and in vivo. The present study suggested the crucial role of SMAD7e in bladder cancer. Estrogen might promote the development of bladder cancer by inducing SMAD7e production. These findings may provide a potential target for CRISPR-mediated gene therapy for bladder cancer in the future.
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Affiliation(s)
- Wenan Che
- Hunan Key Laboratory of Economic Crops Genetic Improvement and Integrated Utilization, School of Life Sciences, Hunan University of Science and Technology, Xiangtan, China
| | - Shanting Ye
- Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, China
| | - Aoxiang Cai
- Hunan Key Laboratory of Economic Crops Genetic Improvement and Integrated Utilization, School of Life Sciences, Hunan University of Science and Technology, Xiangtan, China
| | - Xiaojuan Cui
- Hunan Key Laboratory of Economic Crops Genetic Improvement and Integrated Utilization, School of Life Sciences, Hunan University of Science and Technology, Xiangtan, China
| | - Yuandong Sun
- Hunan Key Laboratory of Economic Crops Genetic Improvement and Integrated Utilization, School of Life Sciences, Hunan University of Science and Technology, Xiangtan, China
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Che W, Dong Y, Quan HB. RANKL inhibits cell proliferation by regulating MALAT1 expression in a human osteoblastic cell line hFOB 1.19. Cell Mol Biol (Noisy-le-grand) 2015; 61:7-14. [PMID: 25817340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Accepted: 01/15/2015] [Indexed: 06/04/2023]
Abstract
Receptor activator of NF—κB ligand (RANKL), a TNF—related protein, is a key factor regulating bone metabolism. It has been well known that RANKL—mediated signaling regulates the formation, activation and survival of osteoclast in normal bone modeling and remodeling, and also plays an important role in a variety of pathologic conditions. However, there is no direct evidence about the effect of RANKL on osteoblast. Herein, we investigated whether RANKL had effect on cell proliferation in a normal human fetal osteoblastic cell line hFOB 1.19. MTT assay showed that RANKL inhibited hFOB 1.19 cells growth in a dose—dependent and time—dependent manner. Importantly, we found that RANKL induced the expression of a lncRNA, MALAT1, for the first time. Knockdown of RANK by siRNA blocked the induction of MALAT1 by RANKL. By infection with MALAT1 siRNA, MALAT1 knockdown reversed RANKL—induced cells growth inhibition and cell cycle arrest. In addition, MALAT1 also regulated OPG expression in hFOB 1.19 cells. In conclusion, RANKL, binding to its receptor RANK, inhibited cell proliferation via MALAT1 upregulation in osteoblast cells in vitro.
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Affiliation(s)
- W Che
- Zhongshan Hospital, Fudan University Department of Orthopedics Surgery Shanghai China
| | - Y Dong
- Shanghai Medical College, Fudan University Department of Neurology and Institute of Neurology Shanghai China
| | - H-B Quan
- Zhongshan Hospital, Fudan University Department of Internal Medicine Shanghai China QUANHONGBO2004@hotmail.com
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McDonald M, Stockdale C, Che W, Castaneda A, Johnson K, Lagneaux A, McConnell L, Hardy-Fairbanks A. Vaginal misoprostol versus concentrated oxytocin for midtrimester labor induction: a retrospective chart review. Contraception 2014. [DOI: 10.1016/j.contraception.2014.05.056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Sui W, Cao C, Che W, Chen J, Xue W, Liu P, Guo L, Dai Y. Comparative analyses of histone H3K9 trimethylations in the heart and spleen of normal humans. Genet Mol Res 2014; 13:1697-706. [PMID: 24446338 DOI: 10.4238/2014.january.14.5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The global features of trimethylations of histone 3 at lysine 9 (H3K9me3) have been well studied in recent years; however, most of these studies were performed in mammalian cell lines. In this study, we generated genome-wide maps of H3K9me3 of the human heart and spleen using chromatin immunoprecipitation followed by high-throughput sequencing (ChIP-seq) technology. We examined the global patterns of H3K9me3 in both tissues and found that modifications were closely associated with tissue-specific expression, function, and development. In addition, we found that 169 genes displayed significant H3K9me3 differences between the heart and spleen. Among these genes, 64 were heart-H3K9me3-specific, 87 genes were spleen-H3K9me3-specific, and 18 were shared in both heart- and spleen-H3K9me3. In conclusion, we observed significant differences in H3K9me3 in the heart and spleen, which may help to explain epigenetic differences between these tissues. Such novel findings highlight the significance of H3K9me3 as a potential biomarker or promising target for epigenetic-based disease treatment.
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Affiliation(s)
- W Sui
- Nephrology Department of Guilin 181st Hospital, Guangxi Key Laboratory of Metabolic Diseases Research, Guilin, Guangxi, China
| | - C Cao
- Nephrology Department of Guilin 181st Hospital, Guangxi Key Laboratory of Metabolic Diseases Research, Guilin, Guangxi, China
| | - W Che
- Nephrology Department of Guilin 181st Hospital, Guangxi Key Laboratory of Metabolic Diseases Research, Guilin, Guangxi, China
| | - J Chen
- Nephrology Department of Guilin 181st Hospital, Guangxi Key Laboratory of Metabolic Diseases Research, Guilin, Guangxi, China
| | - W Xue
- Nephrology Department of Guilin 181st Hospital, Guangxi Key Laboratory of Metabolic Diseases Research, Guilin, Guangxi, China
| | - P Liu
- Nephrology Department of Guilin 181st Hospital, Guangxi Key Laboratory of Metabolic Diseases Research, Guilin, Guangxi, China
| | - L Guo
- College of Life Science, Guangxi Normal University, Guilin, Guangxi, China
| | - Y Dai
- Clinical Medical Research Center, The Second Clinical Medical College of Jinan University, Shenzhen People's Hospital, Shenzhen, Guangdong, China
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Manetsch M, Ramsay EE, King EM, Seidel P, Che W, Ge Q, Hibbs DE, Newton R, Ammit AJ. Corticosteroids and β₂-agonists upregulate mitogen-activated protein kinase phosphatase 1: in vitro mechanisms. Br J Pharmacol 2012; 166:2049-59. [PMID: 22372570 DOI: 10.1111/j.1476-5381.2012.01923.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND AND PURPOSE Airway remodelling is a consequence of long-term inflammation and MAPKs are key signalling molecules that drive pro-inflammatory pathways. The endogenous MAPK deactivator--MAPK phosphatase 1 (MKP-1)--is a critical negative regulator of the myriad pro-inflammatory pathways activated by MAPKs in the airway. EXPERIMENTAL APPROACH Herein we investigated the molecular mechanisms responsible for the upregulation of MKP-1 in airway smooth muscle (ASM) by the corticosteroid dexamethasone and the β₂-agonist formoterol, added alone and in combination. KEY RESULTS MKP-1 is a corticosteroid-inducible gene whose expression is enhanced by long-acting β₂-agonists in an additive manner. Formoterol induced MKP-1 expression via the β₂-adrenoceptor and we provide the first direct evidence (utilizing overexpression of PKIα, a highly selective PKA inhibitor) to show that PKA mediates β₂-agonist-induced MKP-1 upregulation. Dexamethasone activated MKP-1 transcription in ASM cells via a cis-acting corticosteroid-responsive region located between -1380 and -1266 bp of the MKP-1 promoter. While the 3'-untranslated region of MKP-1 contains adenylate + uridylate elements responsible for regulation at the post-transcriptional level, actinomycin D chase experiments revealed that there was no increase in MKP-1 mRNA stability in the presence of dexamethasone, formoterol, alone or in combination. Rather, there was an additive effect of the asthma therapeutics on MKP-1 transcription. CONCLUSIONS AND IMPLICATIONS Taken together, these studies allow us a greater understanding of the molecular basis of MKP-1 regulation by corticosteroids and β₂-agonists and this new knowledge may lead to elucidation of optimized corticosteroid-sparing therapies in the future.
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Affiliation(s)
- M Manetsch
- Respiratory Research Group, Faculty of Pharmacy, University of Sydney, Sydney, NSW, Australia
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Che W, Liu W, Wei Y, Xu Y, Hou L, Matsumori A, Hu D. Increased serum N-terminal pro-B-type natriuretic peptide and left ventricle diastolic dysfunction in patients with hepatitis C virus infection. J Viral Hepat 2012; 19:327-31. [PMID: 22497811 DOI: 10.1111/j.1365-2893.2011.01551.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Abstract
Prior studies demonstrated that patients with hepatitis C virus (HCV) infection had higher plasma N-terminal pro-B-type natriuretic peptide (NT-proBNP) levels, which may indicate the presence of a subclinical cardiac dysfunction. However, there are few data regarding the echocardiographic assessment in HCV-infected patients. The objectives of this study were to investigate changes in the left ventricle (LV) with echocardiography and to identify echocardiographic correlates of serum NT-proBNP levels in HCV-infected patients. Ninety HCV-infected patients and 90 age and gender-matched healthy controls were included. The level of serum NT-proBNP was higher in the patient group (P < 0.001). The proportion of patients whose serum NT-proBNP levels were higher than 125 pg/mL was greater than that of controls (15.56%vs 3.33%, P = 0.011). Echocardiography did not show any significant difference of cardiac structural abnormalities between groups. In the patient group, E, E' and E/A were lower, and E/E' was higher. The proportion of patients (13, 14.44%) with impaired diastolic filling (E/A ≤ 0.75; 0.75 < E/A < 1.5 and E/E' ≥ 10) was greater than that of the control group (3, 3.33%; P = 0.018). Simple regression analysis demonstrated a statistically significant linear correlation between NT-proBNP levels and left ventricular diastolic diameter (LVDd) (r = 0.178, P = 0.013), left ventricular posterior wall diastolic thickness (LVPWd) (r = 0.147, P = 0.023) and mitral E/E' (r = 0.414, P = 0.027). Independent correlates of NT-proBNP levels (R(2) = 0.34) were older age (β' = 0.034, P = 0.011) and E/E' ratio (β' = 0.026, P = 0.018). In conclusion, the combined analysis of NT-proBNP and echocardiography showed a possible subclinical left ventricular diastolic dysfunction as evidence of a pathogenic link between HCV and CVD.
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Affiliation(s)
- W Che
- Department of Cardiology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
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Zhang W, Che W, Liu DK, Gan YP, Lv FF. Characterization of runoff from various urban catchments at different spatial scales in Beijing, China. Water Sci Technol 2012; 66:21-27. [PMID: 22678196 DOI: 10.2166/wst.2012.156] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
In order to investigate the characterization of runoff in storm sewer from various urban catchments, three monitoring systems at different spatial scales have been installed separately. They have been held since July 2010 in urban area of Beijing (China). The monitoring data revealed that chemical oxygen demand (COD), total suspended solids (TSS), total nitrogen (TN), total phosphorus (TP), and NH(3)-N values significantly exceed the Class V surface water quality standard developed by Ministry of Environmental Protection of the People's Republic of China (MEP). A surface solids buildup and wash off model for small watershed was adopted to analyze and discuss the process of a runoff pollutant discharge. More than a half of pollutant parameters presented a good fit to the model. However, a slightly worse-fit to the wash off model appeared in less than half of the data. Due to the influence of sewer sediments, sewer system characteristics, catchment characteristics, and other reasons, first flush was seldom observed in storm sewer runoff from these three survey areas. Meanwhile, the correlation between TSS and any other pollutant was analyzed according to cumulative load of pollutants in runoff events. An event mean concentrations (EMCs) approach was adopted to quantify the pollution of runoff. EMCs of various pollutants in storm sewer runoff between different rainfall events were slightly higher than the typical values observed in similar areas at home and abroad, according to other studies reported in literature. Based on quantitative analysis, it can be concluded that urban non-point source pollution is recognized as the major causes of quality deterioration in the receiving water bodies. This is after the point source pollution has been controlled substantially in Beijing. An integrated strategy, which combines centralized and decentralized control, along with the conditions of meteorology, hydrology, urban planning, existing drainage system, etc., will be an effective and economic approach to urban runoff pollution control.
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Affiliation(s)
- W Zhang
- Beijing University of Civil Engineering and Architecture, Beijing, China
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Che W, Liu W, Wei Y, Xu Y, Chen Y, Huang Y, Li L, Xiao J, Matsumori A, Hu D. e0677 Increased plasma NTerminal proBType natriuretic peptide in patients with hepatitis C virus infection. Heart 2010. [DOI: 10.1136/hrt.2010.208967.677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Alexis J, Che W, Ding B, Ito S, Wang N, McClain C, Korshunov V, Berk B, Yan C, Abe J. Bcr Serine/Threonine Kinase Enhances Angiotensin Ii–Mediated Nuclear Factor Kb Transcriptional Activation in Vascular Smooth Muscle Cells via Inhibition of Peroxisome Proliferator–Activated Receptor Γ. J Investig Med 2007. [DOI: 10.1177/108155890705500219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- J. Alexis
- University of Rochester, Rochester, NY
| | - W. Che
- University of Rochester, Rochester, NY
| | - B. Ding
- University of Rochester, Rochester, NY
| | - S. Ito
- University of Rochester, Rochester, NY
| | - N. Wang
- University of Rochester, Rochester, NY
| | | | | | - B.C. Berk
- University of Rochester, Rochester, NY
| | - C. Yan
- University of Rochester, Rochester, NY
| | - J. Abe
- University of Rochester, Rochester, NY
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Alexis J, Che W, Ding B, Ito S, Wang N, McClain C, Korshunov V, Berk BC, Yan C, Abe J. 19 BCR SERINE/THREONINE KINASE ENHANCES ANGIOTENSIN II-MEDIATED NUCLEAR FACTOR κB TRANSCRIPTIONAL ACTIVATION IN VASCULAR SMOOTH MUSCLE CELLS VIA INHIBITION OF PEROXISOME PROLIFERATOR-ACTIVATED RECEPTOR γ. J Investig Med 2007. [DOI: 10.1136/jim-55-02-19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Tan SB, Goh C, Thumboo J, Che W, Chowbay B, Cheung YB. Risk perception is affected by modes of risk presentation among Singaporeans. Ann Acad Med Singap 2005; 34:184-7. [PMID: 15827666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
INTRODUCTION Not much is known about how Singaporeans perceive and react to risk presentation. There is no consensus on whether the European Union guidelines for describing the risk of side effects are valid. This study investigated the effect of different modes of risk presentation on how Singaporeans perceive and react to medical risk. Furthermore, we investigated the practical usage of qualitative phrases, the European Union's adjectives in particular, in describing levels of risk. MATERIALS AND METHODS A hypothetical situation about the risk of side effects of an influenza vaccine was presented in either a probability format (i.e., 5%; n = 42) or a frequency format (i.e., 1 out of 20; n = 43). The 2 versions of questionnaire were handed out in an alternate order to a convenience sample of 47 healthcare professionals and 38 university students. RESULTS Respondents presented with a "5% risk" were more likely to describe the risk as "uncommon" or "rare", as compared to respondents presented with a risk of "one out of twenty" (P <0.01). Furthermore, the former showed more willingness to accept the influenza vaccine described in the hypothetical situation than in the latter, but this was not statistically different (67% versus 54%; P >0.1). CONCLUSIONS Modes of risk presentation affect how people perceive risk, even among people who are highly educated.
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Affiliation(s)
- S B Tan
- Division of Clinical Trials and Epidemiological Sciences, Hong Kong Baptist University
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Liu Y, Che W, Li J. Monitor-based evaluation of pollutant load from urban stormwater runoff in Beijing. Water Sci Technol 2005; 52:191-7. [PMID: 16445188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
As a major pollutant source to urban receiving waters, the non-point source pollution from urban runoff needs to be well studied and effectively controlled. Based on monitoring data from urban runoff pollutant sources, this article describes a systematic estimation of total pollutant loads from the urban areas of Beijing. A numerical model was developed to quantify main pollutant loads of urban runoff in Beijing. A sub-procedure is involved in this method, in which the flush process influences both the quantity and quality of stormwater runoff. A statistics-based method was applied in computing the annual pollutant load as an output of the runoff. The proportions of pollutant from point-source and non-point sources were compared. This provides a scientific basis for proper environmental input assessment of urban stormwater pollution to receiving waters, improvement of infrastructure performance, implementation of urban stormwater management, and utilization of stormwater.
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Affiliation(s)
- Y Liu
- Institute of Environmental Science and Engineering, Tongji University, Shanghai 200092, P.R. China.
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Cheng Y, Zhang Y, Lin C, Zhan Z, Yu X, Lin J, Cai M, Che W. [Taxonomic studies on Echinochasmus fujienensis and its related species by random amplified polymorphic DNA analysis and experimental infection]. Zhongguo Ji Sheng Chong Xue Yu Ji Sheng Chong Bing Za Zhi 2003; 17:135-9. [PMID: 12563828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
AIM To explore the identification and differentiation of Echinochasmus fujianensis, Echinochasmus japonicus(Jiangxi strain and Fujian strain), Echinochasmus liliputanus Anhui and Echinochasmus per foliatus Hubei. METHODS Random amplified polymorphic DNA analysis (RAPD) and experimental animal infection were performed. RESULTS 469 polymorphic DNA fragments were obtained by 28 primers from 4 Echinochasmus species and strains in Fujian, Anhui and Jiangxi. 20.8% and 97.6% of the fragments in Echinochasmus fujianensis were the same as those in Echinochasmus japonicus Fujian strain and in Echinochasmus liliputanus Anhui, respectively, 99.7% of the fragments were the same between Echinochasmus japonicus Jiangxi strain and Fujian strain. CONCLUSION Echinochasmus fujianensis and Echinochasmus liliputanus Anhui are the same species. Echinochasmus fujienensis is an independent species different from Echinochasmus japonicus. Polyinfection of Echinochasmus fujianensis, Echinochasmus japonicus and Echinochasmus perfoliatus exist in all the 3 provinces, Hubei, Anbui and Fujian, of which Echinochasmus fujienensis is a dominant species.
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Affiliation(s)
- Y Cheng
- Fujian Provincial Institute of Parasitic Discases, Fuzhou 350001
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Abe JI, Che W, Yoshizumi M, Huang Q, Glassman M, Ohta S, Wu Y, Arlinghaus R, Berk BC. Bcr in vascular smooth muscle cells involvement of Ras and Raf-1 activation by Bcr. Ann N Y Acad Sci 2001; 947:341-3. [PMID: 11795286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
Bcr gene was originally identified by its presence in the chimeric Bcr/Abl oncogene. In vascular smooth muscle cells, platelet-derived growth factor-BB (PDGF) stimulated Bcr kinase activity. The mutant PDGF receptor for PI3-K, but not for PLC-gamma binding sites, showed significantly reduced Bcr kinase activity. Bcr wild-type enhanced, whereas Bcr kinase negative form inhibited PDGF-stimulated ERK1/2 activity. A dominant negative Ras did not inhibit Bcr kinase activation, and overexpression of Bcr increased Ras/Raf-1 activity and DNA synthesis. These results demonstrated the importance of Bcr in PDGF-mediated events such as activation of Ras, Raf-1, and ERK1/2 and stimulation of DNA synthesis.
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Affiliation(s)
- J I Abe
- Center for Cardiovascular Research, University of Rochester, New York 14642, USA.
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16
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Takeishi Y, Huang Q, Wang T, Glassman M, Yoshizumi M, Baines CP, Lee JD, Kawakatsu H, Che W, Lerner-Marmarosh N, Zhang C, Yan C, Ohta S, Walsh RA, Berk BC, Abe J. Src family kinase and adenosine differentially regulate multiple MAP kinases in ischemic myocardium: modulation of MAP kinases activation by ischemic preconditioning. J Mol Cell Cardiol 2001; 33:1989-2005. [PMID: 11708843 DOI: 10.1006/jmcc.2001.1463] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Recent studies suggest that ischemia activates Src and members of the mitogen-activated protein (MAP) kinase superfamily and their downstream effectors, including big MAP kinase 1 (BMK1) and p90 ribosomal S6 kinase (p90RSK). It has also been reported that adenosine is released during ischemia and involved in triggering the protective mechanism of ischemic preconditioning. To assess the roles of Src and adenosine in ischemia-induced MAP kinases activation, we utilized the Src inhibitor PP2 (4-Amino-5-(4-chlorophenyl)-7-(t-butyl)pyrazolo[3,4-d]pyrimidine) and the adenosine receptor antagonist 8-(p-sulfophenyl) theophylline (SPT) in perfused guinea pig hearts. PP2 (1 microm) inhibited ischemia-induced Src, BMK1 and JNK activation but not JAK2 and p38 activation. SPT inhibited ischemia-mediated p38 and JNK activation. These results demonstrate that Src family kinase and adenosine regulate MAP kinases by parallel pathways. Preconditioning significantly improved both recovery of developed pressure and dp/dt in isolated guinea pig hearts. Since the protective effect of preconditioning was blocked by PP2 (1 microm) and SPT (50 microm), we next investigated the regulation of Src, MAP kinases and p90RSK during preconditioning. The activity and time course of ERK1/2 was not changed, but p90RSK activation by reperfusion was completely inhibited by preconditioning. In contrast, the activation by ischemia of Src, BMK1, p38 and JNK was significantly faster in preconditioned hearts. Maximal BMK1 activation by ischemia was also significantly enhanced by preconditioning. These data suggest important roles for Src family kinases and adenosine in mediating preconditioning, and suggest specific roles for individual MAP kinases in preconditioning.
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Affiliation(s)
- Y Takeishi
- Department of Medicine, Case Western Reserve University, Cleveland, OH 44106-5029, USA
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17
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Che W, Abe J, Yoshizumi M, Huang Q, Glassman M, Ohta S, Melaragno MG, Poppa V, Yan C, Lerner-Marmarosh N, Zhang C, Wu Y, Arlinghaus R, Berk BC. p160 Bcr mediates platelet-derived growth factor activation of extracellular signal-regulated kinase in vascular smooth muscle cells. Circulation 2001; 104:1399-406. [PMID: 11560856 DOI: 10.1161/hc3701.095581] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND The human Bcr gene was originally identified by its presence in the chimeric Bcr/Abl oncogene, which is causative for chronic myeloblastic leukemia. Because Bcr encodes a serine/threonine protein kinase, we studied its kinase activity and determined the role of Bcr in the PDGF signaling pathway to ERK1/2 activation and DNA synthesis in rat aortic smooth muscle cells (RASMCs). METHODS AND RESULTS In RASMCs, platelet-derived growth factor-BB (PDGF) stimulated Bcr kinase activity, with a maximum at 1 minute. Because phosphatidylinositol 3'-kinase (PI3-K) is essential for Bcr/Abl leukemogenesis, we evaluated the role of mouse PDGF-beta-receptor binding sites for PI3-K (Y708, Y719) and for phospholipase C-gamma (Y977, Y989) in PDGF-mediated Bcr kinase activation. The mutant PDGF receptor Y708F/Y719F but not Y977F/Y989F showed significantly reduced Bcr kinase activity. To determine the role of Bcr in PDGF-mediated signal transduction events leading to ERK1/2 and its downstream Elk1 transcription activation, wild-type (WT) and kinase-negative (KN) Bcr were transiently expressed in RASMCs. Bcr WT enhanced, whereas Bcr KN inhibited, PDGF-stimulated ERK1/2 and Elk1 transcriptional activity. Overexpression of Bcr also enhanced PDGF-induced Ras/Raf-1 activity and DNA synthesis, but this regulation is independent of the kinase activity of Bcr. Finally, we found that Bcr expression was increased in the neointimal layer after balloon injury of rat carotid artery. CONCLUSIONS These results demonstrated the importance of Bcr in PDGF-mediated events, such as activation of Ras, Raf-1, ERK1/2, and Elk1, and stimulation of DNA synthesis.
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MESH Headings
- Animals
- Aorta
- CHO Cells
- Carotid Arteries/metabolism
- Cells, Cultured
- Cricetinae
- DNA/biosynthesis
- Enzyme Activation/drug effects
- Gene Expression
- Humans
- Mitogen-Activated Protein Kinase Kinases/metabolism
- Mitogen-Activated Protein Kinases/metabolism
- Muscle, Smooth, Vascular/cytology
- Muscle, Smooth, Vascular/drug effects
- Muscle, Smooth, Vascular/metabolism
- Oncogene Proteins/genetics
- Oncogene Proteins/metabolism
- Platelet-Derived Growth Factor/pharmacology
- Protein Structure, Tertiary/physiology
- Protein-Tyrosine Kinases
- Proto-Oncogene Proteins
- Proto-Oncogene Proteins c-bcr
- Proto-Oncogene Proteins c-raf/metabolism
- Rats
- Receptors, Platelet-Derived Growth Factor/genetics
- Receptors, Platelet-Derived Growth Factor/metabolism
- Signal Transduction/drug effects
- Signal Transduction/physiology
- Transfection
- Tunica Intima/metabolism
- ras Proteins/metabolism
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Affiliation(s)
- W Che
- Center for Cardiovascular Research, University of Rochester, Rochester, NY, USA
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Takeishi Y, Huang Q, Abe J, Glassman M, Che W, Lee JD, Kawakatsu H, Lawrence EG, Hoit BD, Berk BC, Walsh RA. Src and multiple MAP kinase activation in cardiac hypertrophy and congestive heart failure under chronic pressure-overload: comparison with acute mechanical stretch. J Mol Cell Cardiol 2001; 33:1637-48. [PMID: 11549343 DOI: 10.1006/jmcc.2001.1427] [Citation(s) in RCA: 112] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Activation of members of the mitogen-activated protein (MAP) kinase family and their downstream effectors has been proposed to play a key role in the pathogenesis of cell survival, ischaemic preconditioning, cardiac hypertrophy and heart failure. This study investigated the responses of Src kinase and multiple MAP kinases during the transition from compensated pressure-overload hypertrophy to decompensated congestive heart failure. Extracellular signal-regulated protein kinase (ERK) 1/2, p38, and Src were activated by chronic pressure-overload and their activity was sustained for 8 weeks after aortic banding. In contrast, while p90 ribosomal S6 kinase (90RSK) and big MAP kinase 1 (BMK1) were activated in compensated hypertrophy, their activities were significantly decreased in hearts with heart failure. No changes were found in C-Jun NH2 terminal kinase (JNK) activity after aortic banding. These data suggest that differential activation of MAP kinase family members may contribute to the transition from compensated to decompensated hypertrophy. We also examined acute effects of mechanical stretch on the activation of these kinases in normal and hypertrophied hearts. In the isolated coronary-perfused heart, a balloon in the left ventricle was inflated to achieve minimum end-diastolic pressure of 25 mmHg for 10-20 min. In normal guinea pig hearts, stretch activated ERK1/2, p90RSK, p38, Src, and BMK1 but not JNK. However in hypertrophied hearts, further activation of these kinases was not observed by acute mechanical stretch. Mechanical stretch-induced activation of ERK1/2 and p38 kinase in normal hearts was attenuated significantly by a protein kinase C inhibitor, chelerythrine. We demonstrate that ERK1/2, p90RSK, p38, Src, and BMK1 are activated by chronic pressure-overload and by acute mechanical stretch. These data suggest that Src, BMK1 and p90RSK play a role as novel signal transduction pathways leading to cardiac hypertrophy. In addition, the differential inhibition of p90RSK and BMK1 in hearts with congestive heart failure suggests the specific role of these two kinases to maintain cardiac function under chronic pressure-overload.
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Koh YH, Che W, Higashiyama S, Takahashi M, Miyamoto Y, Suzuki K, Taniguchi N. Osmotic stress induces HB-EGF gene expression via Ca(2+)/Pyk2/JNK signal cascades in rat aortic smooth muscle cells. J Biochem 2001; 130:351-8. [PMID: 11530010 DOI: 10.1093/oxfordjournals.jbchem.a002993] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The present study was undertaken in an attempt to clarify the pathway by which hyperosmotic stress induces HB-EGF gene expression in rat aortic smooth muscle cells (RASMC). Hyperosmotic stress induced by a high concentration of glucose or mannitol resulted in an increase in HB-EGF mRNA level in a dose- and time-dependent manner. HB-EGF induction was blocked by curcumin, a c-jun/fos antisense oligonucleotide and a dominant-negative mutant of JNK1. Electrophoretic mobility shift assay also showed the involvement of AP-1 in HB-EGF gene expression by glucose. In addition, hyperosmotic stress induced rapid phosphorylation of Pyk2 in RASMC. TPA and calcium chelating agents (BAPTA-AM and EGTA) blocked Pyk2 phosphorylation and HB-EGF gene expression. Furthermore, HB-EGF gene expression and JNK activation by hyperosmotic stress were sensitive to PP2, an Src kinase-specific inhibitor. These findings indicate that hyperosmotic stress activates JNK via calcium-Pyk2 signaling cascades, which in turn induce HB-EGF gene expression.
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Affiliation(s)
- Y H Koh
- Department of Biochemistry, Osaka University Medical School, Yamadaoka, Suita, Osaka 565-0871, Japan
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20
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Koh YH, Suzuki K, Che W, Park YS, Miyamoto Y, Higashiyama S, Taniguchi N. Inactivation of glutathione peroxidase by NO leads to the accumulation of H2O2 and the induction of HB-EGF via c-Jun NH2-terminal kinase in rat aortic smooth muscle cells. FASEB J 2001; 15:1472-4. [PMID: 11387261 DOI: 10.1096/fj.00-0572fje] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Y H Koh
- Department of Biochemistry, Osaka University Medical School, Osaka 565-0871, Japan
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21
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Hatanaka Y, Fujii J, Fukutomi T, Watanabe T, Che W, Sanada Y, Igarashi Y, Taniguchi N. Reactive oxygen species enhances the induction of inducible nitric oxide synthase by sphingomyelinase in RAW264.7 cells. Biochim Biophys Acta 1998; 1393:203-10. [PMID: 9714807 DOI: 10.1016/s0005-2760(98)00066-6] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The sphingomyelin pathway, activated by stimuli, such as inflammatory cytokines, results in the formation of ceramide, a second messenger molecule. The purpose of the present study was to examine the mechanism by which macrophage-type nitric oxide synthase (NOS II) is induced by stimulation of the sphingomyelin pathway. When RAW264.7 cells were incubated with sphingomyelinase (SMase), nitrite production, NOS II activity, and NOS II mRNA were increased in a dose-dependent manner. Sphingosine, dihydrosphingosine, N-acetylsphingosine (C2-ceramide), and N-acylsphingosine (natural ceramide) had no effect on nitrite production, suggesting that signal molecules other than these were concomitantly produced by SMase treatment and required for NOS II induction. We then investigated the possible involvement of intracellular reactive oxygen species (ROS) in gene induction. SMase treatment increased the level of intracellular ROS, as assessed by flow cytometric analysis using a ROS-sensitive dye, dichlorofluorescin diacetate. Antioxidants, such as N-acetyl-l-cysteine and alpha-tocopherol, inhibited gene induction as well as nitrite production by SMase. These results suggest that activation of the sphingomyelin pathway induces gene expression and that the elevated ROS were somehow involved in this process.
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Affiliation(s)
- Y Hatanaka
- Department of Biochemistry, Osaka University Medical School, 2-2 Yamadaoka, Suita, Osaka 565-0871, Japan
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22
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Kayanoki Y, Che W, Kawata S, Matsuzawa Y, Higashiyama S, Taniguchi N. The effect of cilostazol, a cyclic nucleotide phosphodiesterase III inhibitor, on heparin-binding EGF-like growth factor expression in macrophages and vascular smooth muscle cells. Biochem Biophys Res Commun 1997; 238:478-81. [PMID: 9299535 DOI: 10.1006/bbrc.1997.7323] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Heparin-binding EGF-like growth factor (HB-EGF) is a mitogen for smooth muscle cells (SMC) and is detected in SMC and macrophages in atherosclerotic plaques, suggesting that HB-EGF may be associated with the pathogenesis of atherosclerosis. The present study indicates that cilostazol, a phosphodiesterase III inhibitor, suppresses the expression of HB-EGF in rat aortic SMC and in U-937 cells, a macrophage-like cell line, stimulated by lipopolysaccharide. Further, cilostazol diminished the induction of HB-EGF mRNA by methylglyoxsal, which is a reactive dicarbonyl metabolite produced as the result of a glycation reaction and which might be associated with macroangiopathy caused by hyperglycemia. Cilostazol suppressed the production of HB-EGF protein in the conditioned medium of SMC. These data suggest that cilostazol might act by suppressing the progression of atherogenesis by means of suppressing the expression of HB-EGF in SMC and macrophages.
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Affiliation(s)
- Y Kayanoki
- Department of Biochemistry, Osaka University Medical School, Osaka, Suita, 565, Japan
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23
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Che W, Asahi M, Takahashi M, Kaneto H, Okado A, Higashiyama S, Taniguchi N. Selective induction of heparin-binding epidermal growth factor-like growth factor by methylglyoxal and 3-deoxyglucosone in rat aortic smooth muscle cells. The involvement of reactive oxygen species formation and a possible implication for atherogenesis in diabetes. J Biol Chem 1997; 272:18453-9. [PMID: 9218489 DOI: 10.1074/jbc.272.29.18453] [Citation(s) in RCA: 92] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Methylglyoxal (MG) and 3-deoxyglucosone (3-DG), reactive dicarbonyl metabolites in the glyoxalase system and glycation reaction, respectively, selectively induced heparin-binding epidermal growth factor (HB-EGF)-like growth factor mRNA in a dose- and time-dependent manner in rat aortic smooth muscle cells (RASMC). A nuclear run-on assay revealed that the dicarbonyl may regulate expression of HB-EGF at the transcription level. The dicarbonyl also increased the secretion of HB-EGF from RASMC. However, platelet-derived growth factor, another known growth factor of smooth muscle cells (SMC), was not induced by both dicarbonyls. The dicarbonyl augmented intracellular peroxides prior to the induction of HB-EGF mRNA as judged by flow cytometric analysis using 2',7'-dichlorofluorescin diacetate. N-Acetyl-L-cysteine and aminoguanidine suppressed both dicarbonyl-increased HB-EGF mRNA and intracellular peroxide levels in RASMC. DL-Buthionine-(S, R)-sulfoximine increased the levels of 3-DG-induced HB-EGF mRNA. Furthermore, hydrogen peroxide alone also induced HB-EGF mRNA in RASMC. These results indicate that MG and 3-DG induce HB-EGF by increasing the intracellular peroxide levels. In addition, the pretreatment with 12-O-tetra-decanoylphorbol-13-acetate failed to alter dicarbonyl-induced HB-EGF mRNA expression in RASMC, suggesting that the signal transducing mechanism is not mediated by protein kinase C. Since HB-EGF is known as a potent mitogen for smooth muscle cells and is abundant in atherosclerotic plaques, the induction of HB-EGF by MG and 3-DG, as well as the concomitant increment of intracellular peroxides, may trigger atherogenesis during diabetes.
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MESH Headings
- Acetylcysteine/pharmacology
- Animals
- Aorta, Thoracic/drug effects
- Aorta, Thoracic/metabolism
- Arteriosclerosis
- Cell Nucleus/metabolism
- Cells, Cultured
- Cycloheximide/pharmacology
- Dactinomycin/pharmacology
- Deoxyglucose/analogs & derivatives
- Deoxyglucose/pharmacology
- Diabetic Angiopathies
- Epidermal Growth Factor/biosynthesis
- Gene Expression/drug effects
- Guanidines/pharmacology
- Heparin/metabolism
- Heparin-binding EGF-like Growth Factor
- Intercellular Signaling Peptides and Proteins
- Kinetics
- Muscle, Smooth, Vascular/drug effects
- Muscle, Smooth, Vascular/metabolism
- Peroxides/metabolism
- Pyruvaldehyde/pharmacology
- RNA, Messenger/biosynthesis
- Rats
- Rats, Wistar
- Reactive Oxygen Species/metabolism
- Transcription, Genetic/drug effects
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Affiliation(s)
- W Che
- Department of Biochemistry, Osaka University Medical School, 2-2 Yamadaoka, Suita, Osaka 565, Japan
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Marten GG, Che W, Bordes ES. Compatibility of cyclopoid copepods with mosquito insecticides. J Am Mosq Control Assoc 1993; 9:150-154. [PMID: 8350070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Larvivorous copepods (Macrocyclops, Mesocyclops and Acanthocyclops) were tested for their sensitivities to commonly used mosquito larvicides and adulticides. The cyclopoids were not harmed by Bacillus thuringiensis (H-14) (B.t.i.) or larviciding oil. Control of mosquito larvae in field trials was accelerated by applying B.t.i. at the same time cyclopoids were introduced to a breeding site. Among adulticides tested, the cyclopoids were least sensitive to permethrin. Field trials demonstrated that permethrin does not harm cyclopoids when applied at label specifications.
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Affiliation(s)
- G G Marten
- New Orleans Mosquito Control Board, LA 70126
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