101
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Codarin E, Renzone G, Poz A, Avellini C, Baccarani U, Lupo F, di Maso V, Crocè SL, Tiribelli C, Arena S, Quadrifoglio F, Scaloni A, Tell G. Differential Proteomic Analysis of Subfractioned Human Hepatocellular Carcinoma Tissues. J Proteome Res 2009; 8:2273-84. [DOI: 10.1021/pr8009275] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Erika Codarin
- Department of Biomedical Sciences and Technologies, University of Udine, 33100 Udine, Italy, Proteomics & Mass Spectrometry Laboratory, ISPAAM, National Research Council, 80147 Naples, Italy, Department of Clinical Pathology, University of Udine, 33100 Udine, Italy, Department of Surgery & Transplantation, University of Udine, 33100 Udine, Italy, Azienda Ospedaliero Universitaria, Molinette, 10100 Torino, Italy, and Centro Studi Fegato, AREA Science Park, 34012 Trieste, Italy
| | - Giovanni Renzone
- Department of Biomedical Sciences and Technologies, University of Udine, 33100 Udine, Italy, Proteomics & Mass Spectrometry Laboratory, ISPAAM, National Research Council, 80147 Naples, Italy, Department of Clinical Pathology, University of Udine, 33100 Udine, Italy, Department of Surgery & Transplantation, University of Udine, 33100 Udine, Italy, Azienda Ospedaliero Universitaria, Molinette, 10100 Torino, Italy, and Centro Studi Fegato, AREA Science Park, 34012 Trieste, Italy
| | - Alessandra Poz
- Department of Biomedical Sciences and Technologies, University of Udine, 33100 Udine, Italy, Proteomics & Mass Spectrometry Laboratory, ISPAAM, National Research Council, 80147 Naples, Italy, Department of Clinical Pathology, University of Udine, 33100 Udine, Italy, Department of Surgery & Transplantation, University of Udine, 33100 Udine, Italy, Azienda Ospedaliero Universitaria, Molinette, 10100 Torino, Italy, and Centro Studi Fegato, AREA Science Park, 34012 Trieste, Italy
| | - Claudio Avellini
- Department of Biomedical Sciences and Technologies, University of Udine, 33100 Udine, Italy, Proteomics & Mass Spectrometry Laboratory, ISPAAM, National Research Council, 80147 Naples, Italy, Department of Clinical Pathology, University of Udine, 33100 Udine, Italy, Department of Surgery & Transplantation, University of Udine, 33100 Udine, Italy, Azienda Ospedaliero Universitaria, Molinette, 10100 Torino, Italy, and Centro Studi Fegato, AREA Science Park, 34012 Trieste, Italy
| | - Umberto Baccarani
- Department of Biomedical Sciences and Technologies, University of Udine, 33100 Udine, Italy, Proteomics & Mass Spectrometry Laboratory, ISPAAM, National Research Council, 80147 Naples, Italy, Department of Clinical Pathology, University of Udine, 33100 Udine, Italy, Department of Surgery & Transplantation, University of Udine, 33100 Udine, Italy, Azienda Ospedaliero Universitaria, Molinette, 10100 Torino, Italy, and Centro Studi Fegato, AREA Science Park, 34012 Trieste, Italy
| | - Francesco Lupo
- Department of Biomedical Sciences and Technologies, University of Udine, 33100 Udine, Italy, Proteomics & Mass Spectrometry Laboratory, ISPAAM, National Research Council, 80147 Naples, Italy, Department of Clinical Pathology, University of Udine, 33100 Udine, Italy, Department of Surgery & Transplantation, University of Udine, 33100 Udine, Italy, Azienda Ospedaliero Universitaria, Molinette, 10100 Torino, Italy, and Centro Studi Fegato, AREA Science Park, 34012 Trieste, Italy
| | - Vittorio di Maso
- Department of Biomedical Sciences and Technologies, University of Udine, 33100 Udine, Italy, Proteomics & Mass Spectrometry Laboratory, ISPAAM, National Research Council, 80147 Naples, Italy, Department of Clinical Pathology, University of Udine, 33100 Udine, Italy, Department of Surgery & Transplantation, University of Udine, 33100 Udine, Italy, Azienda Ospedaliero Universitaria, Molinette, 10100 Torino, Italy, and Centro Studi Fegato, AREA Science Park, 34012 Trieste, Italy
| | - Saveria Lory Crocè
- Department of Biomedical Sciences and Technologies, University of Udine, 33100 Udine, Italy, Proteomics & Mass Spectrometry Laboratory, ISPAAM, National Research Council, 80147 Naples, Italy, Department of Clinical Pathology, University of Udine, 33100 Udine, Italy, Department of Surgery & Transplantation, University of Udine, 33100 Udine, Italy, Azienda Ospedaliero Universitaria, Molinette, 10100 Torino, Italy, and Centro Studi Fegato, AREA Science Park, 34012 Trieste, Italy
| | - Claudio Tiribelli
- Department of Biomedical Sciences and Technologies, University of Udine, 33100 Udine, Italy, Proteomics & Mass Spectrometry Laboratory, ISPAAM, National Research Council, 80147 Naples, Italy, Department of Clinical Pathology, University of Udine, 33100 Udine, Italy, Department of Surgery & Transplantation, University of Udine, 33100 Udine, Italy, Azienda Ospedaliero Universitaria, Molinette, 10100 Torino, Italy, and Centro Studi Fegato, AREA Science Park, 34012 Trieste, Italy
| | - Simona Arena
- Department of Biomedical Sciences and Technologies, University of Udine, 33100 Udine, Italy, Proteomics & Mass Spectrometry Laboratory, ISPAAM, National Research Council, 80147 Naples, Italy, Department of Clinical Pathology, University of Udine, 33100 Udine, Italy, Department of Surgery & Transplantation, University of Udine, 33100 Udine, Italy, Azienda Ospedaliero Universitaria, Molinette, 10100 Torino, Italy, and Centro Studi Fegato, AREA Science Park, 34012 Trieste, Italy
| | - Franco Quadrifoglio
- Department of Biomedical Sciences and Technologies, University of Udine, 33100 Udine, Italy, Proteomics & Mass Spectrometry Laboratory, ISPAAM, National Research Council, 80147 Naples, Italy, Department of Clinical Pathology, University of Udine, 33100 Udine, Italy, Department of Surgery & Transplantation, University of Udine, 33100 Udine, Italy, Azienda Ospedaliero Universitaria, Molinette, 10100 Torino, Italy, and Centro Studi Fegato, AREA Science Park, 34012 Trieste, Italy
| | - Andrea Scaloni
- Department of Biomedical Sciences and Technologies, University of Udine, 33100 Udine, Italy, Proteomics & Mass Spectrometry Laboratory, ISPAAM, National Research Council, 80147 Naples, Italy, Department of Clinical Pathology, University of Udine, 33100 Udine, Italy, Department of Surgery & Transplantation, University of Udine, 33100 Udine, Italy, Azienda Ospedaliero Universitaria, Molinette, 10100 Torino, Italy, and Centro Studi Fegato, AREA Science Park, 34012 Trieste, Italy
| | - Gianluca Tell
- Department of Biomedical Sciences and Technologies, University of Udine, 33100 Udine, Italy, Proteomics & Mass Spectrometry Laboratory, ISPAAM, National Research Council, 80147 Naples, Italy, Department of Clinical Pathology, University of Udine, 33100 Udine, Italy, Department of Surgery & Transplantation, University of Udine, 33100 Udine, Italy, Azienda Ospedaliero Universitaria, Molinette, 10100 Torino, Italy, and Centro Studi Fegato, AREA Science Park, 34012 Trieste, Italy
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102
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Li M, Zhang Y, Zhai Q, Feurino LW, Fisher WE, Chen C, Yao Q. Thymosin beta-10 is aberrantly expressed in pancreatic cancer and induces JNK activation. Cancer Invest 2009; 27:251-6. [PMID: 19194824 DOI: 10.1080/07357900802254016] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Thymosin beta-10 (T beta 10) has been shown to be associated with several cancers; however, its role in pancreatic cancer is not understood. The expression of T beta 10 was determined by immunohistochemistry and real-time polymerase chain reaction. The phosphorylation of JNK and the cytokine secretion was determined by using the Bio-Plex phosphoprotein and cytokines assays. Pancreatic cancer tissues and cells expressed higher amounts of T beta 10 than normal surrounding tissues and human pancreatic duct epithelial cells. Exogenous T beta 10 caused the phosphorylation of JNK and increased the secretion of cytokines interleukin (IL)-7 and IL-8 in BxPC-3 cells. T beta 10 might be a promising marker and a novel therapeutic target for pancreatic cancer.
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Affiliation(s)
- Min Li
- Molecular Surgeon Research Center, Elkins Pancreas Center, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, Texas 77030, USA.
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103
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A proteomic approach to characterizing ciglitazone-induced cancer cell differentiation in Hep-G2 cell line. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2009; 1794:615-26. [DOI: 10.1016/j.bbapap.2009.01.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2008] [Revised: 12/15/2008] [Accepted: 01/09/2009] [Indexed: 01/22/2023]
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104
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Bane FT, Bannon JH, Pennington SR, Campiani G, Williams DC, Zisterer DM, Mc Gee MM. The Microtubule-Targeting Agents, PBOX-6 [Pyrrolobenzoxazepine 7-[(dimethylcarbamoyl)oxy]-6-(2-naphthyl)pyrrolo-[2,1-d] (1,5)-benzoxazepine] and Paclitaxel, Induce Nucleocytoplasmic Redistribution of the Peptidyl-Prolyl Isomerases, Cyclophilin A and Pin1, in Malignant Hematopoietic Cells. J Pharmacol Exp Ther 2009; 329:38-47. [DOI: 10.1124/jpet.108.148130] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
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105
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Qi YJ, He QY, Ma YF, Du YW, Liu GC, Li YJ, Tsao GSW, Ngai SM, Chiu JF. Proteomic identification of malignant transformation-related proteins in esophageal squamous cell carcinoma. J Cell Biochem 2008; 104:1625-35. [PMID: 18320592 DOI: 10.1002/jcb.21727] [Citation(s) in RCA: 88] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Esophageal cancer (EC) persists to be a leading cancer-related death in northern China. Clinical outcome of EC is the most dismal among many types of digestive tumors because EC at early stage is asymptomatic. The current study used 2-DE-based proteomics to identify differentially expressed proteins between esophageal cancer cell lines and immortal cell line. Fifteen proteins were identified with differences of more than five folds, comprising the down-regulation of annexin A2, histone deacetylase 10 isoform beta and protein disulfide-isomerase ER-60 precursor, and the up-regulation of heat shock 70 kDa protein 9B precursor, solute carrier family 44 Member 3, heterogeneous nuclear ribonucleoprotein L (hnRNP L), eukaryotic translation initiation factor 4A isoform 2, triosephosphate isomerase1 (TPI), peroxiredoxin1 (PRX1), forminotransferase cyclodeaminase form (FTCD), fibrinogen gamma-A chain precursor, kinesin-like DNA binding protein, lamin A/C, cyclophilin A (CypA), and transcription factor MTSG1. Expression pattern of annexin A2 was verified by Western blotting, immunocytochemistry and immunohistochemistry analysis. The implication of these protein alterations correlated to the esophageal malignant transformation is discussed.
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Affiliation(s)
- Yi-Jun Qi
- Key Laboratory of Cellular and Molecular Immunology, Institute of Immunology, College of Medicine, Henan University, Keifeng, Henan 475000, China
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106
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Li M, Wang X, Li W, Li F, Yang H, Wang H, Brunicardi FC, Chen C, Yao Q, Fisher WE. Somatostatin receptor-1 induces cell cycle arrest and inhibits tumor growth in pancreatic cancer. Cancer Sci 2008; 99:2218-23. [PMID: 18823376 DOI: 10.1111/j.1349-7006.2008.00940.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Functional somatostatin receptors (SSTR) are lost in human pancreatic cancer. Transfection of SSTR-1 inhibited pancreatic cancer cell proliferation in vitro. We hypothesize that stable transfection of SSTR-1 may inhibit pancreatic cancer growth in vivo possibly through cell cycle arrest. In this study, we examined the expression of SSTR-1 mRNA in human pancreatic cancer tissue specimens, and investigated the effect of SSTR-1 overexpression on cell proliferation, cell cycle, and tumor growth in a subcutaneous nude mouse model. We found that SSTR-1 mRNA was downregulated in the majority of pancreatic cancer tissue specimens. Transfection of SSTR-1 caused cell cycle arrest at the G(0)/G(1) growth phase, with a corresponding decline of cells in the S (mitotic) phase. The overexpression of SSTR-1 significantly inhibited subcutaneous tumor size by 71% and 43% (n = 5, P < 0.05, Student's t-test), and inhibited tumor weight by 69% and 47% (n = 5, P < 0.05, Student's t-test), in Panc-SSTR-1 and MIA-SSTR-1 groups, respectively, indicating the potent inhibitory effect of SSTR-1 on pancreatic cancer growth. Our data demonstrate that overexpression of SSTR-1 significantly inhibits pancreatic cancer growth possibly through cell cycle arrest. This study suggests that gene therapy with SSTR-1 may be a potential adjuvant treatment for pancreatic cancer.
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Affiliation(s)
- Min Li
- Michael E DeBakey Department of Surgery, Molecular Surgeon Research Center, Baylor College of Medicine, Houston, Texas, USA.
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107
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Chen X, Su J, Chang J, Kanekura T, Li J, Kuang YH, Peng S, Yang F, Lu H, Zhang JL. Inhibition of CD147 gene expression via RNA interference reduces tumor cell proliferation, activation, adhesion, and migration activity in the human Jurkat T-lymphoma cell line. Cancer Invest 2008; 26:689-97. [PMID: 18608214 DOI: 10.1080/07357900701867892] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
CD147, a leukocyte surface molecule over-expressed in T-lymphoma cells, is reportedly associated with lymphocyte activation and proteinase production via interactions with fibroblasts and plays a role in stromal invasion by lymphoma cells. To determine the role of CD147 in the progression of T-lymphoma, we performed siRNA interference-mediated knockdown of CD147 in a CD147-expressing Jurkat T-cell line. CD147 knockdown resulted in the decreased proliferation and migration of Jurkat cells and reduced the adhesion of Jurkat cells to extracelluar matrix fibronectin in vitro. CD147-siRNA inhibited the activation of Jurkat cells via down-regulation of CD25 expression. Our results indicate that CD147 is involved in T-lymphoma progression, a finding useful in efforts to develop targeted therapies to treat patients with T-lymphoma.
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Affiliation(s)
- Xiang Chen
- Department of Dermatology, XiangYa Hospital, Central South University, Changsha, Hunan, China.
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108
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Calhoun CC, Lu YC, Song J, Chiu R. Knockdown endogenous CypA with siRNA in U2OS cells results in disruption of F-actin structure and alters tumor phenotype. Mol Cell Biochem 2008; 320:35-43. [PMID: 18704644 DOI: 10.1007/s11010-008-9896-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2008] [Accepted: 07/25/2008] [Indexed: 10/21/2022]
Abstract
Cyclophilin A (CypA) was originally identified as a cytosolic protein possessing peptidyl-prolyl isomerase activity. CypA has been shown to play a pivotal role in the immune response, but little is known about other molecular mechanisms of CypA-mediated biologic events. In our present study, we demonstrate that knockdown CypA expression using RNAi in U2OS cells resulted in disruption of the F-actin structure, as well as decreased anchorage-independent growth, proliferation, and migration. Wild-type U2OS cells treated with cyclosporine A (CsA), a peptidyl-prolyl isomerase inhibitor, displayed the same phenotype as knockdown CypA cells, suggesting that the isomerase activity of CypA is required to maintain a normal phenotype. In vitro and in vivo binding assays revealed that CypA binds to N-WASP, which functions in the nucleation of actin via the Arp2/3 complex. Pulse-chase labeling study indicated an enhanced degradation of N-WASP in cell lacking CypA, suggesting that CypA is required for stabilizing N-WASP to form a N-WASP/Arp2/3 complex for the nucleation/initiation of F-actin polymerization.
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Affiliation(s)
- Colonya C Calhoun
- Dental Research Institute, UCLA School of Dentistry, Los Angeles, CA 90095, USA
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109
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Al-Ghoul M, Brück TB, Lauer-Fields JL, Asirvatham VS, Zapata C, Kerr RG, Fields GB. Comparative proteomic analysis of matched primary and metastatic melanoma cell lines. J Proteome Res 2008; 7:4107-18. [PMID: 18698805 DOI: 10.1021/pr800174k] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Identification of the biochemical pathways involved in the transformation from primary to metastatic melanoma is an area under intense investigation. A 2DE proteomics approach has been applied herein to the matched patient primary and metastatic melanoma cell lines WM-115 and WM-266-4, respectively, to better understand the processes that underlie tumor progression. Image analysis between samples aligned 470 common gel spots. Quantitative gel analysis indicated 115 gel spots of greater intensity in the metastatic line compared with the primary one, leading to the identification of 131 proteins via database searching of nano-LC-ESI-Q-TOF-MS/MS data. This more than tripled the number of proteins previously shown to be of higher abundance during melanoma progression. Also observed were 22 gel spots to be of lesser intensity in the metastatic line with respect to the primary one. Of these gel spots 15 proteins could be identified. Numerous proteins from both groups had not been reported previously to participate in melanoma progression. Further analysis of one protein, cyclophilin A, confirmed that this protein is expressed at higher levels in metastatic melanoma compared with primary melanoma and normal fibroblasts. Overall, this study expands our knowledge of protein modulation during melanoma stages, and suggests new targets for inhibitor development.
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Affiliation(s)
- Mohammad Al-Ghoul
- Department of Chemistry and Biochemistry, Florida Atlantic University, Boca Raton, FL 33431, USA
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110
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Yang Y, Lu N, Zhou J, Chen ZN, Zhu P. Cyclophilin A up-regulates MMP-9 expression and adhesion of monocytes/macrophages via CD147 signalling pathway in rheumatoid arthritis. Rheumatology (Oxford) 2008; 47:1299-310. [PMID: 18567920 PMCID: PMC7107241 DOI: 10.1093/rheumatology/ken225] [Citation(s) in RCA: 125] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Objectives. To investigate whether cyclophilin A (CypA) can up-regulate the expression of MMP-2 and MMP-9 in monocytes/macrophages and whether CD147 facilitates this regulation in RA. Methods. Peripheral blood monocytes were isolated from RA patients and differentiated into macrophages by M-CSF (15 ng/ml). Under CypA stimulation (200 ng/ml), the protein release and activation of MMPs were detected by gelatin zymography and invasion assay. Human monocyte cell line THP-1 cells were selected for the advanced searching for potential interaction between CypA and CD147 in production of MMPs and cell adhesion to extracellular matrix (ECM). Results. CypA significantly increased production and activation of MMP-9, not MMP-2, in the monocytes/macrophages derived from RA SF. CSA and HAb18G/CD147 antagonistic peptide AP-9 against CD147, respectively, dramatically decreased MMP-2 and MMP-9 expression, both in the absence or presence of CypA. Similar effects of CypA on MMP-9 production and cell invasion were observed in THP-1 cells. CypA-induced nuclear factor κB (NF-κB) activity for MMP-9 transcription were strongly blocked by extracellular signal-regulated kinase (ERK), c-Jun amino terminal kinase (JNK) inhibitors (U0126 and SP600125, respectively), but not by p38 mitogen-activated protein kinase (MAPK) inhibitors (SB203580). CypA also induced calcium mobilization and increased the adhesion of THP-1 cells to ECM. Conclusions. These findings suggest that in RA, the abundant CypA, by its direct binding to CD147, up-regulates MMP-9 expression and adhesion of monocytes/macrophages to ECM, and the cyclophilin-CD147 interactions might contribute to the destruction of cartilage and bone.
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Affiliation(s)
- Y Yang
- Department of Clinical Immunology, State Key Discipline of Cell Biology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, P.R. China
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111
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Li M, Bharadwaj U, Zhang R, Zhang S, Mu H, Fisher WE, Brunicardi FC, Chen C, Yao Q. Mesothelin is a malignant factor and therapeutic vaccine target for pancreatic cancer. Mol Cancer Ther 2008; 7:286-96. [PMID: 18281514 DOI: 10.1158/1535-7163.mct-07-0483] [Citation(s) in RCA: 123] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Given the high fatality rate of pancreatic cancer, an effective treatment for this devastating disease is urgently needed. We have shown that mesothelin expression was higher in human pancreatic cancer cells than in human pancreatic duct epithelial cells, and mesothelin mRNA was substantially overexpressed in 18 of 21 (86%) clinical pancreatic adenocarcinoma specimens when compared with the surrounding normal tissues. However, the biological functions of mesothelin in tumor progression are not clearly understood. Here we studied the effects of mesothelin overexpression in pancreatic cancer cell proliferation and migration in vitro and pancreatic cancer progression in vivo. We found that forced expression of mesothelin significantly increased tumor cell proliferation and migration by 90% and 300%, respectively, and increased tumor volume by 4-fold in the nude mice xenograft model when compared with the vector control cell line. Silencing of mesothelin inhibited cell proliferation and migration in pancreatic cancer cells and ablated tumor progression in vivo. Vaccination with chimeric virus-like particles that contain human mesothelin substantially inhibited tumor progression in C57BL/6J mice. The increases in mesothelin-specific antibodies and CTL activity and the decrease in regulatory T cells correlated with reduced tumor progression and prolonged survival. This study revealed novel functions of mesothelin and suggested a new therapeutic vaccine strategy whereby mesothelin is targeted to control pancreatic cancer progression.
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Affiliation(s)
- Min Li
- Molecular Surgeon Research Center, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX 77030, USA
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112
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Li Z, Zhao X, Bai S, Wang Z, Chen L, Wei Y, Huang C. Proteomics identification of cyclophilin a as a potential prognostic factor and therapeutic target in endometrial carcinoma. Mol Cell Proteomics 2008; 7:1810-23. [PMID: 18421009 DOI: 10.1074/mcp.m700544-mcp200] [Citation(s) in RCA: 91] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Endometrial carcinoma is one of the most common malignancies of the female genital tract, and there is an urgent need for discovery of novel factors for prognostic assessment and therapeutic targets to endometrial carcinoma. Herein a two-dimensional gel electrophoresis and MALDI-Q-TOF MS/MS-based proteomics approach was used to identify differentially expressed proteins in endometrial carcinoma. Of the 99 proteins identified, cyclophilin A was one of the most significantly altered proteins, and its overexpression was confirmed using RT-PCR and Western blot analyses. Immunohistochemistry suggested a link between cyclophilin A expression and poor differentiation and decreased survival (p < 0.01). Knockdown of cyclophilin A expression by RNA interference led to the significant suppression of the cell growth and the induction of apoptosis in endometrial carcinoma HEC-1-B cells in vitro (p < 0.01) and the inhibition of tumor growth in vivo (p < 0.01). These data suggest that cyclophilin A may serve as a novel prognostic factor and possibly an attractive therapeutic target for endometrial carcinoma.
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Affiliation(s)
- Zhengyu Li
- Department of Gynecology and Obstetrics, West China Second [corrected] Hospital, Sichuan University, Chengdu 610041, China
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113
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Li M, Zhang Y, Feurino LW, Wang H, Fisher WE, Brunicardi FC, Chen C, Yao Q. Interleukin-8 increases vascular endothelial growth factor and neuropilin expression and stimulates ERK activation in human pancreatic cancer. Cancer Sci 2008; 99:733-7. [PMID: 18307536 DOI: 10.1111/j.1349-7006.2008.00740.x] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Interleukin-8 (IL-8) is associated with tumorigenesis by promoting angiogenesis and metastasis. Although up-regulation of IL-8 is indicated in many cancers, its function in pancreatic cancer has not been well characterized. In this study we examined the expression of IL-8 on pancreatic cancer cells and clinical tissue specimens, and investigated the effect of exogenous IL-8 on gene expression, and signaling in human pancreatic cancer cells. We found that pancreatic cancer cells expressed higher amount of IL-8 mRNA than normal human pancreatic ductal epithelium cells. IL-8 mRNA was also substantially overexpressed in 11 of 14 (79%) clinical pancreatic-adenocarcinoma samples compared with that in their surrounding normal tissues. Exogenous IL-8 up-regulated the expression of vascular endothelial growth factor(165), and neuropilin (NRP)-2 in BxPC-3 cells, one of human pancreatic cancer cell lines. IL-8 expression was inducible by hypoxia mimicking reagent cobalt chloride. In addition, IL-8 activated extracellular signal-regulated kinase (ERK)1/2 signaling pathway in BxPC-3 cells. Our studies suggest that IL-8 might be a malignant factor in human pancreatic cancer by induction of vascular endothelial growth factor and NRP-2 expression and ERK activation. Targeting IL-8 along with other antiangiogenesis therapy could be an effective treatment for this malignancy.
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Affiliation(s)
- Min Li
- Molecular Surgeon Research Center, Elkins Pancreas Center, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, Texas 77030, USA.
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114
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Kabbage M, Chahed K, Hamrita B, Guillier CL, Trimeche M, Remadi S, Hoebeke J, Chouchane L. Protein alterations in infiltrating ductal carcinomas of the breast as detected by nonequilibrium pH gradient electrophoresis and mass spectrometry. J Biomed Biotechnol 2008; 2008:564127. [PMID: 18401453 PMCID: PMC2288682 DOI: 10.1155/2008/564127] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2007] [Revised: 11/20/2007] [Accepted: 01/19/2008] [Indexed: 01/03/2023] Open
Abstract
Improvement of breast-cancer detection through the identification of potential cancer biomarkers is considered as a promising strategy for effective assessment of the disease. The current study has used nonequilibrium pH gradient electrophoresis with subsequent analysis by mass spectrometry to identify protein alterations in invasive ductal carcinomas of the breast from Tunisian women. We have identified multiple protein alterations in tumor tissues that were picked, processed, and unambiguously assigned identities by matrix-assisted laser desorption/ionization-time of flight mass spectrometry (MALDI-TOF). The proteins identified span a wide range of functions and are believed to have potential clinical applications as cancer biomarkers. They include glycolytic enzymes, molecular chaperones, cytoskeletal-related proteins, antioxydant enzymes, and immunologic related proteins. Among these proteins, enolase 1, phosphoglycerate kinase 1, deoxyhemoglobin, Mn-superoxyde dismutase, alpha-B-crystallin, HSP27, Raf kinase inhibitor protein, heterogeneous nuclear ribonucleoprotein A2/B1, cofilin 1, and peptidylprolyl isomerase A were overexpressed in tumors compared with normal tissues. In contrast, the IGHG1 protein, the complement C3 component C3c, which are two newly identified protein markers, were downregulated in IDCA tissues.
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Affiliation(s)
- Maria Kabbage
- Laboratoire d'Immuno-Oncologie Moléculaire,
Faculté de Médecine de Monastir,
5019 Monastir,
Tunisia
| | - Karim Chahed
- Laboratoire d'Immuno-Oncologie Moléculaire,
Faculté de Médecine de Monastir,
5019 Monastir,
Tunisia
- Institut Supérieur de Biotechnologie de Monastir,
5000 Monastir,
Tunisia
| | - Bechr Hamrita
- Laboratoire d'Immuno-Oncologie Moléculaire,
Faculté de Médecine de Monastir,
5019 Monastir,
Tunisia
| | | | - Mounir Trimeche
- Departement de Pathologie,
Centre Hospitalo-Universitaire Farhat-Hached,
4002 Sousse,
Tunisia
| | | | - Johan Hoebeke
- Immunologie et Chimie th_rapeutiques,
UPR 9021-CNRS,
Institut de Biologie Moléculaire et Cellulaire,
67084 Strasbourg,
France
| | - Lotfi Chouchane
- Department of Genetic Medicine,
Weill Cornell Medical College in Qatar, and Qatar Foundation,
Doha,
Qatar
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115
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Tian R, Wei LM, Qin RY, Li Y, Du ZY, Xia W, Shi CJ, Jin H. Proteome analysis of human pancreatic ductal adenocarcinoma tissue using two-dimensional gel electrophoresis and tandem mass spectrometry for identification of disease-related proteins. Dig Dis Sci 2008; 53:65-72. [PMID: 17492507 DOI: 10.1007/s10620-007-9823-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2006] [Accepted: 03/16/2007] [Indexed: 01/03/2023]
Abstract
A comparative proteomic approach has been used to identify and analyze proteins related to pancreatic cancer. Proteomes of eight pairs of clinical pancreatic ductal adenocarcinoma (PDAC) tissue samples and samples of normal adjacent tissue were obtained by two-dimensional gel electrophoresis (2DE). Comprehensive analysis of proteins was focused on total protein spots for which there were statistical differences between the two groups. Proteins were identified by peptide mass fingerprinting with tandem mass spectrometry (MS-MS). Western blotting and immunohistochemistry (IHC) were also performed to verify the expression of some candidate proteins. Thirty protein spots were identified, including proteases, antioxidant proteins, signal-transduction proteins, calcium-binding proteins, structural proteins, chaperones, and others. Western blotting and IHC confirmed up-regulated expression of two candidate proteins, nucleotide diphosphatase kinase (NDPK) and annexin II, in tumorous tissues. These results suggest that combination of 2DE with MS is an effective strategy for discovery of differently expressed proteins in PDAC which may be molecular markers for diagnosis or therapeutic targets.
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Affiliation(s)
- Rui Tian
- Department of Biliary-Pancreatic Surgery, Affiliated Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
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116
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Zhang Y, Feurino LW, Zhai Q, Wang H, Fisher WE, Chen C, Yao Q, Li M. Thymosin Beta 4 is overexpressed in human pancreatic cancer cells and stimulates proinflammatory cytokine secretion and JNK activation. Cancer Biol Ther 2007; 7:419-23. [PMID: 18094619 DOI: 10.4161/cbt.7.3.5415] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
BACKGROUND Thymosin beta 4 (T beta 4) has been shown to be associated with tumor metastasis and angiogenesis; however, its role in pancreatic cancer has not been understood. In the current study, we examined the expression of T beta 4 in pancreatic cancer cells, and determined the effect of exogenous T beta 4 on cytokine secretion, and signal transduction in human pancreatic cancer cells. RESULTS Pancreatic cancer cell lines expressed higher amount of T beta 4 mRNA than normal human pancreatic ductal epithelium (HPDE) cells. Exogenous T beta 4 increased the secretion of proinflammatory cytokines IL-6, IL-8 and MCP-1 in Panc-1 cells. In addition, T beta 4 activated Jun N-terminal Kinase (JNK) signaling pathways in pancreatic cancer cells. METHODS The mRNA levels of T beta 4 were determined by real-time RT PCR. Phosphorylation of JNK in pancreatic cancer cells was determined using Bio-Plex phosphoprotein assay. The expression of cytokines in human pancreatic cancer cell lines was determined with Bio-Plex cytokine assay. CONCLUSIONS T beta 4 might be involved in stimulating human pancreatic cancer progression by promoting proinflammatory cytokine environment and activating JNK signaling pathway. Targeting T beta 4 and related molecules may be a novel therapeutic strategy for pancreatic cancer.
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Affiliation(s)
- Yuqing Zhang
- Molecular Surgeon Research Center, Elkins Pancreas Center, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, Texas 77030, USA
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117
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Aberrant expression of zinc transporter ZIP4 (SLC39A4) significantly contributes to human pancreatic cancer pathogenesis and progression. Proc Natl Acad Sci U S A 2007; 104:18636-41. [PMID: 18003899 DOI: 10.1073/pnas.0709307104] [Citation(s) in RCA: 197] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Zinc is an essential trace element and catalytic/structural component used by many metalloenzymes and transcription factors. Recent studies indicate a possible correlation of zinc levels with the cancer risk; however, the exact role of zinc and zinc transporters in cancer progression is unknown. We have observed that a zinc transporter, ZIP4 (SLC39A4), was substantially overexpressed in 16 of 17 (94%) clinical pancreatic adenocarcinoma specimens compared with the surrounding normal tissues, and ZIP4 mRNA expression was significantly higher in human pancreatic cancer cells than human pancreatic ductal epithelium (HPDE) cells. This indicates that aberrant ZIP4 up-regulation may contribute to the pancreatic cancer pathogenesis and progression. We studied the effects of ZIP4 overexpression in pancreatic cancer cell proliferation in vitro and pancreatic cancer progression in vivo. We found that forced expression of ZIP4 increased intracellular zinc levels, increased cell proliferation by 2-fold in vitro, and significantly increased tumor volume by 13-fold in the nude mice model with s.c. xenograft compared with the control cells. In the orthotopic nude mice model, overexpression of ZIP4 not only increased the primary tumor weight (7.2-fold), it also increased the peritoneal dissemination and ascites incidence. Moreover, increased cell proliferation and higher zinc content were also observed in the tumor tissues that overexpressed ZIP4. These data reveal an important outcome of aberrant ZIP4 expression in contributing to pancreatic cancer pathogenesis and progression. It may suggest a therapeutic strategy whereby ZIP4 is targeted to control pancreatic cancer growth.
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118
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Chahed K, Kabbage M, Hamrita B, Guillier CL, Trimeche M, Remadi S, Ehret-Sabatier L, Chouchane L. Detection of protein alterations in male breast cancer using two dimensional gel electrophoresis and mass spectrometry: the involvement of several pathways in tumorigenesis. Clin Chim Acta 2007; 388:106-14. [PMID: 17996735 DOI: 10.1016/j.cca.2007.10.018] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2007] [Revised: 10/11/2007] [Accepted: 10/12/2007] [Indexed: 10/22/2022]
Abstract
BACKGROUND Little emphasis has been placed today on the elucidation of protein alterations in male breast carcinogenesis. METHODS Protein extracts were subjected to both isoelectric focusing (IEF) and non-equilibrium pH gradient electrophoretic (NEPHGE) analyses. Differentially expressed proteins in tumor tissues were identified by matrix assisted laser desorption /ionization time of flight (MALDI-TOF) mass spectrometry and database search. RESULTS Some of the alterations involve variations in the expression of cytokeratins 8, 18 and 19. More interestingly, tropomyosin1, a protein known to play a role in suppression of the malignant phenotype, was found to be under-expressed in cancer tissues, implicating a possible pivotal role for this protein in male breast carcinogenesis. Co-upregulation of molecular chaperones (heat shock protein HSP27 and protein disulfide isomerase), stress related proteins (peroxiredoxin 1 and peptidylprolyl isomerase A) and glycolytic enzymes (enolase 1) occurred also in male breast tumors. Some of the remaining alterations include proteins involved in invasion and metastasis, such as galectin 1 and cathepsin D. CONCLUSIONS The present study represents a first proteomic investigation of protein alterations in infiltrating ductal carcinomas (IDCA) of the male breast. A number of protein alterations in tumor tissues have been characterised thus, providing new insights into the molecular mechanisms underlying this disease.
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Affiliation(s)
- Karim Chahed
- Laboratoire d'Immuno-Oncologie Moléculaire, Faculté de Médecine de Monastir, Monastir, Tunisia.
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119
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Pushkarsky T, Yurchenko V, Laborico A, Bukrinsky M. CD147 stimulates HIV-1 infection in a signal-independent fashion. Biochem Biophys Res Commun 2007; 363:495-9. [PMID: 17888876 PMCID: PMC2080668 DOI: 10.1016/j.bbrc.2007.08.192] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2007] [Accepted: 08/27/2007] [Indexed: 11/16/2022]
Abstract
CD147 is a type I transmembrane protein previously identified as a signal transducing receptor for extracellular cyclophilins. CD147-expressing cells exhibit a characteristic activation of extracellular-signal regulated kinase 1 and 2 (ERK1/2) in response to stimulation with cyclophilin A (CypA). CD147 was also shown to enhance HIV-1 infection in a CypA-dependent fashion, but the role of signaling in this activity of CD147 has not been investigated. In this report, we demonstrate that neither mutations incapacitating signaling response of CD147 to CypA stimulation, nor inhibitor of ERK activation, reduced susceptibility of cells to HIV-1 infection. Surprisingly, truncation of the cytoplasmic tail of CD147 did not abolish signaling response to CypA, but reduced infection by HIV-1 to the level observed in control cells. These results indicate that CD147 enhances HIV-1 replication in a signaling-independent fashion through specific events mediated by the cytoplasmic domain of the protein.
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Affiliation(s)
- Tatiana Pushkarsky
- Department of Microbiology and Tropical Medicine, George Washington University Medical Center, Ross Hall Room 734, 2300 Eye Street NW, Washington, DC 20037, USA
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120
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Aspinall-O'Dea M, Costello E. The pancreatic cancer proteome - recent advances and future promise. Proteomics Clin Appl 2007; 1:1066-79. [DOI: 10.1002/prca.200700144] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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121
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Yang H, Chen J, Yang J, Qiao S, Zhao S, Yu L. Cyclophilin A is upregulated in small cell lung cancer and activates ERK1/2 signal. Biochem Biophys Res Commun 2007; 361:763-7. [PMID: 17678621 DOI: 10.1016/j.bbrc.2007.07.085] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2007] [Accepted: 07/17/2007] [Indexed: 12/17/2022]
Abstract
Cyclophilin A (CypA), a peptidyl-prolyl cis-trans isomerase (PPIase), was originally identified as the intracellular receptor for cyclosporin A (CsA). Recently, correlations of CypA with tumor pathogenesis have been studied. Here, we studied the expression of CypA and its receptor CD147 in several kinds of lung cancer cells as well as a normal lung cell and found that in H446 cell, a kind of small cell lung cancer cell, the expression are the highest. The exogeneous CypA protein can substantially stimulate H446 cell growth in dependence on its PPIase activity. We also showed that CypA protein can stimulate ERK1/2 signal in dose and time dependent manners and almost has no effect to p38 and JNK signals. Elucidation of the precise role of CypA in these pathways may lead to new targeted therapies for small cell lung cancer.
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Affiliation(s)
- Huirong Yang
- State Key Laboratory of Genetic Engineering, Institute of Genetics, School of Life Sciences, Fudan University, Shanghai 200433, PR China
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122
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Mbeunkui F, Metge BJ, Shevde LA, Pannell LK. Identification of differentially secreted biomarkers using LC-MS/MS in isogenic cell lines representing a progression of breast cancer. J Proteome Res 2007; 6:2993-3002. [PMID: 17608509 PMCID: PMC2584611 DOI: 10.1021/pr060629m] [Citation(s) in RCA: 91] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Proteins secreted (the secretome) from cancer cells are potentially useful as biomarkers of the disease. Using LC-MS/MS, the secreted proteomes from a series of isogenic breast cancer cell lines varying in aggressiveness were analyzed by mass spectrometry: nontumorigenic MCF10A, premalignant/tumorigenic MCF10AT, tumorigenic/locally invasive MCF10 DCIS.com, and tumorigenic/metastatic MCF 10CA cl. D. Proteomes were obtained from conditioned serum-free media, partially fractionated using a small reverse phase C2 column, and digested with trypsin for analysis by LC-MS/MS, using a method previously shown to give highly enriched secreted proteomes (Mbeunkui et al. J. Proteome Res. 2006, 5, 899-906). The search files produced from five analyses (three separate preparations) were combined for database searching (Mascot) which produced a list of over 250 proteins from each cell line. The aim was to discover highly secreted proteins which changed significantly in abundance corresponding with aggressiveness. The most apparent changes were observed for alpha-1-antichymotrypsin and galectin-3-binding protein which were highly secreted proteins from MCF10 DCIS.com and MCF10CA cl. D, yet undetected in the MCF10A and MCF10AT cell lines. Other proteins showing increasing abundance in the more aggressive cell lines included alpha-1-antitrypsin, cathepsin D, and lysyl oxidase. The S100 proteins, often associated with metastasis, showed variable changes in abundance. While the cytosolic proteins were low (e.g., actin and tubulin), there was significant secretion of proteins often associated with the cytoplasm. These proteins were all predicted as products of nonclassical secretion (SecretomeP, Center for Biological Sequence Analysis). The LC-MS/MS results were verified for five selected proteins by western blot analysis, and the relevance of other significant proteins is discussed. Comparisons with two other aggressive breast cancer cell lines are included. The protein with consistent association with aggressiveness in all lines, and in unrelated cancer cells, was the galectin-3-binding protein which has been associated with breast, prostate, and colon cancer earlier, supporting the approach and findings. This analysis of an isogenic series of cell lines suggests the potential usefulness of the secretome for identifying prospective markers for the early detection and aggressiveness/progression of cancer.
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Affiliation(s)
| | | | - Lalita A. Shevde
- Joint submission by L. Pannell and L. Shevde, Mitchell Cancer Institute, Medical Sciences Building, Room 2015, University of South Alabama, 307 University Blvd, Mobile AL 36688. Tel: (251) 414-8201. Fax: (251) 414-8281. E-mail:
| | - Lewis K. Pannell
- Joint submission by L. Pannell and L. Shevde, Mitchell Cancer Institute, Medical Sciences Building, Room 2015, University of South Alabama, 307 University Blvd, Mobile AL 36688. Tel: (251) 414-8201. Fax: (251) 414-8281. E-mail:
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123
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Chen S, Zhang M, Ma H, Saiyin H, Shen S, Xi J, Wan B, Yu L. Oligo-microarray analysis reveals the role of cyclophilin A in drug resistance. Cancer Chemother Pharmacol 2007; 61:459-69. [PMID: 17520256 DOI: 10.1007/s00280-007-0491-y] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2007] [Accepted: 03/30/2007] [Indexed: 10/23/2022]
Abstract
Cyclophilin A (CYPA) belongs to peptidyl prolyl isomerases (PPIases), which catalyze the cis/trans isomerization of prolyl peptide bonds in cellular communication. CYPA has been implicated in several pathological processes, including cancer, inflammatory diseases, and HIV-1 infection. Up-regulation of CYPA has been found to be a common phenomenon in several tumor types, including in hepatocellular carcinoma (HCC). However, the role of CYPA in tumor cells remains unknown. We generated a stable SK-Hep1 cell line and studied the CYPA regulated genes at the transcriptome level. The microarray results reveal that CYPA can up-regulate the expression of many cytokine and drug resistance related genes. Furthermore, we showed that the elevated CYPA expression contributes to drug resistance. We postulate that the over-expression of CYPA in tumors may play a role in clinical resistance to chemotherapy.
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Affiliation(s)
- Shuai Chen
- State Key Laboratory of Genetic Engineering, Institute of Genetics, School of Life Sciences, Fudan University, Shanghai 200433, People's Republic of China
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124
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Chaudhary A, Pechan T, Willett KL. Differential protein expression of peroxiredoxin I and II by benzo(a)pyrene and quercetin treatment in 22Rv1 and PrEC prostate cell lines. Toxicol Appl Pharmacol 2007; 220:197-210. [PMID: 17292933 DOI: 10.1016/j.taap.2006.12.030] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2006] [Revised: 12/21/2006] [Accepted: 12/27/2006] [Indexed: 11/21/2022]
Abstract
Mechanisms of benzo(a)pyrene (BaP)-mediated toxicity and chemopreventative potential of quercetin in prostate cancer are poorly understood. Two-dimensional gel electrophoresis was used to map the differences in protein expression in BaP (1 microM)- and quercetin (5 microM)-treated 22Rv1 human prostate cancer cells. As compared to DMSO, 26 proteins in BaP and 41 proteins in quercetin were found to be differentially expressed (+/-2-fold). Western blots confirmed that BaP increased peroxiredoxin (Prx) Prx I and decreased Prx II in 22Rv1 cells. Similar results were found in PrEC normal prostate epithelial cells. Quercetin (up to 10 microM) upregulated Prx II without altering Prx I levels in 22Rv1 cells whereas in PrEC cells, it did not alter the constitutive protein expression of Prx I or II. The lack of quercetin-mediated changes in Prx expression suggests that quercetin does not interfere with H(2)O(2) levels, and thus may have no deleterious effect in normal prostate cells. Quercetin inhibited both BaP-mediated effects on Prx I and II in 22Rv1 cells. In PrEC cells, quercetin inhibited BaP-mediated upregulation of Prx I and had tendency to neutralize BaP-mediated downregulation of Prx II. Quercetin also inhibited BaP-induced concentrations of reactive oxygen species in both 22Rv1 and PrEC cells. These results suggest that Prx I and II may be involved in BaP-mediated toxicity and the potential chemopreventative mechanisms of quercetin.
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Affiliation(s)
- Amit Chaudhary
- Department of Pharmacology and Environmental Toxicology Research Program, School of Pharmacy, The University of Mississippi, 315 Faser Hall, Box 1848, University, MS 38677, USA
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125
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Chen X, Lin J, Kanekura T, Su J, Lin W, Xie H, Wu Y, Li J, Chen M, Chang J. A small interfering CD147-targeting RNA inhibited the proliferation, invasiveness, and metastatic activity of malignant melanoma. Cancer Res 2006; 66:11323-30. [PMID: 17145878 DOI: 10.1158/0008-5472.can-06-1536] [Citation(s) in RCA: 111] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
CD147 plays a critical role in the invasive and metastatic activity of malignant melanoma cells by stimulating the surrounding fibroblasts to express matrix metalloproteinases and vascular endothelial growth factor. We developed a system that blocks CD147 in the human malignant melanoma cell line, A375, using RNA interference. By transfecting melanoma cells with the small interfering RNA (siRNA) that targets human CD147, we were able to establish two stable clones in which CD147 expression was significantly down-regulated. This resulted in the decreased proliferation and invasion of A375 cells in vitro. CD147 siRNA also down-regulated the expression of vascular endothelial growth factor in these cells and reduced the migration of vascular endothelial cells. The reduction in the CD147 level suppressed the size of s.c. tumors and the microvessel density in an A375 s.c. nude mouse xenograft model. In addition, the in vivo metastatic potential of A375 cells transfected with CD147 siRNA was suppressed in a nude mouse model of pulmonary metastasis.
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Affiliation(s)
- Xiang Chen
- Department of Dermatology, XiangYa Hospital, Central South University, Changsha, Hunan, China.
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