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Zhang H, Chen J, Liu F, Gao C, Wang X, Zhao T, Liu J, Gao S, Zhao X, Ren H, Hao J. CypA, a gene downstream of HIF-1α, promotes the development of PDAC. PLoS One 2014; 9:e92824. [PMID: 24662981 PMCID: PMC3963943 DOI: 10.1371/journal.pone.0092824] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Accepted: 02/26/2014] [Indexed: 12/25/2022] Open
Abstract
Hypoxia-inducible factor-1α (HIF-1α) is a highly important transcription factor involved in cell metabolism. HIF-1α promotes glycolysis and inhibits of mitochondrial respiration in pancreatic ductal adenocarcinoma (PDAC). In response to tumor hypoxia, cyclophilin A (CypA) is over-expressed in various cancer types, and is associated with cell apoptosis, tumor invasion, metastasis, and chemoresistance in PDAC. In this study, we showed that both HIF-1α and CypA expression were significantly associated with lymph node metastasis and tumor stage. The expression of CypA was correlated with HIF-1α. Moreover, the mRNA and protein expression of CypA markedly decreased or increased following the suppression or over-expression of HIF-1α in vitro. Chromatin immunoprecipitation analysis showed that HIF-1α could directly bind to the hypoxia response element (HRE) in the CypA promoter regions and regulated CypA expression. Consistent with other studies, HIF-1α and CypA promoted PDAC cell proliferation and invasion, and suppressed apoptosis in vitro. Furthermore, we proved the combination effect of 2-methoxyestradiol and cyclosporin A both in vitro and in vivo. These results suggested that,CypA, a gene downstream of HIF-1α, could promote the development of PDAC. Thus, CypA might serve as a potential therapeutic target for PDAC.
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MESH Headings
- Adult
- Aged
- Animals
- Carcinoma, Pancreatic Ductal/genetics
- Carcinoma, Pancreatic Ductal/metabolism
- Carcinoma, Pancreatic Ductal/pathology
- Cell Line, Tumor
- Cell Proliferation
- Cyclophilin A/genetics
- Cyclophilin A/metabolism
- Female
- Gene Expression Regulation, Neoplastic/genetics
- Genes, Neoplasm
- Humans
- Hypoxia-Inducible Factor 1, alpha Subunit/genetics
- Hypoxia-Inducible Factor 1, alpha Subunit/metabolism
- Male
- Mice
- Mice, SCID
- Middle Aged
- Neoplasm Invasiveness
- Neoplasm Proteins/genetics
- Neoplasm Proteins/metabolism
- Pancreatic Neoplasms/genetics
- Pancreatic Neoplasms/metabolism
- Pancreatic Neoplasms/pathology
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- RNA, Neoplasm/genetics
- RNA, Neoplasm/metabolism
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Affiliation(s)
- Huan Zhang
- National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - Jing Chen
- National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - Fenghua Liu
- National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - Chuntao Gao
- National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - Xiuchao Wang
- National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - Tiansuo Zhao
- National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - Jingcheng Liu
- National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - Song Gao
- National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - Xiao Zhao
- National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - He Ren
- National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
- * E-mail: (HR); (JH)
| | - Jihui Hao
- National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Department of Pancreatic Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
- * E-mail: (HR); (JH)
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52
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Li Y, Guo H, Dong D, Wu H, Li E. Expression and prognostic relevance of cyclophilin A and matrix metalloproteinase 9 in esophageal squamous cell carcinoma. Diagn Pathol 2013; 8:207. [PMID: 24351116 PMCID: PMC3878405 DOI: 10.1186/1746-1596-8-207] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2013] [Accepted: 12/06/2013] [Indexed: 01/07/2023] Open
Abstract
Aims To guide clinicians in selecting treatment options for esophageal squamous cell carcinoma (ESCC) patients, reliable markers predictive of clinical outcome are desirable. This study analyzed the correlation of cyclophilin A (CypA) and matrix metalloproteinase 9 (MMP9) in ESCC and their relationships to clinicopathological features and survival. Methods We immunohistochemically investigated 70 specimens of ESCC tissues using CypA and MMP9 antibodies. Then, the correlations between CypA and MMP9 expression and clinicopathological features and its prognostic relevance were determined. Results Significant correlations were only found in high level of CypA and MMP9 expression with tumor differentiation and lymph node status. Significant positive correlations were found between the expression status of CypA and that of MMP9. Overexpression of CypA and metastasis were significantly associated with shorter progression free survival times in univariate analysis. Multivariate analysis confirmed that CypA expression was an independent prognostic factor. Conclusions CypA might be correlated with the differentiation, and its elevated expression may be an adverse prognostic indicator for the patients of ESCC. CypA/MMP9 signal pathway may be attributed to the malignant transformation of ESCC, and attention should be paid to a possible target for therapy. Virtual slides The virtual slide(s) for this article can be found here: http://www.diagnosticpathology.diagnomx.eu/vs/1166551968105508.
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Affiliation(s)
- Yi Li
- Department of Oncology, First Affiliated Hospital, Medical School, Xi'an Jiaotong University, Yanta West Road No, 277, Xi'an 710061, Shaanxi Province, China.
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53
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Grigoryeva ES, Cherdyntseva NV, Karbyshev MS, Volkomorov VV, Stepanov IV, Zavyalova MV, Perelmuter VM, Buldakov MA, Afanasjev SG, Tuzikov SA, Bukurova YA, Lisitsyn NA, Beresten SF. Expression of Cyclophilin A in Gastric Adenocarcinoma Patients and Its Inverse Association with Local Relapses and Distant Metastasis. Pathol Oncol Res 2013; 20:467-73. [DOI: 10.1007/s12253-013-9718-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2013] [Accepted: 10/29/2013] [Indexed: 12/21/2022]
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54
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Cyclophilin A: a key player for human disease. Cell Death Dis 2013; 4:e888. [PMID: 24176846 PMCID: PMC3920964 DOI: 10.1038/cddis.2013.410] [Citation(s) in RCA: 310] [Impact Index Per Article: 28.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2013] [Revised: 09/10/2013] [Accepted: 09/11/2013] [Indexed: 01/23/2023]
Abstract
Cyclophilin A (CyPA) is a ubiquitously distributed protein belonging to the immunophilin family. CyPA has peptidyl prolyl cis-trans isomerase (PPIase) activity, which regulates protein folding and trafficking. Although CyPA was initially believed to function primarily as an intracellular protein, recent studies have revealed that it can be secreted by cells in response to inflammatory stimuli. Current research in animal models and humans has provided compelling evidences supporting the critical function of CyPA in several human diseases. This review discusses recently available data about CyPA in cardiovascular diseases, viral infections, neurodegeneration, cancer, rheumatoid arthritis, sepsis, asthma, periodontitis and aging. It is believed that further elucidations of the role of CyPA will provide a better understanding of the molecular mechanisms underlying these diseases and will help develop novel pharmacological therapies.
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55
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Lee J. Cyclophilin A as a New Therapeutic Target for Hepatitis C Virus-induced Hepatocellular Carcinoma. THE KOREAN JOURNAL OF PHYSIOLOGY & PHARMACOLOGY : OFFICIAL JOURNAL OF THE KOREAN PHYSIOLOGICAL SOCIETY AND THE KOREAN SOCIETY OF PHARMACOLOGY 2013; 17:375-83. [PMID: 24227937 PMCID: PMC3823949 DOI: 10.4196/kjpp.2013.17.5.375] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/28/2013] [Revised: 09/21/2013] [Accepted: 09/23/2013] [Indexed: 12/24/2022]
Abstract
Hepatocellular carcinoma (HCC) related to hepatitis B virus (HBV) and hepatitis C virus (HCV) infections is thought to account for more than 80% of primary liver cancers. Both HBV and HCV can establish chronic liver inflammatory infections, altering hepatocyte and liver physiology with potential liver disease progression and HCC development. Cyclophilin A (CypA) has been identified as an essential host factor for the HCV replication by physically interacting with the HCV non structural protein NS5A that in turn interacts with RNA-dependent RNA polymerase NS5B. CypA, a cytosolic binding protein of the immunosuppressive drug cyclosporine A, is overexpressed in many cancer types and often associated with malignant transformation. Therefore, CypA can be a good target for molecular cancer therapy. Because of antiviral activity, the CypA inhibitors have been tested for the treatment of chronic hepatitis C. Nonimmunosuppressive Cyp inhibitors such as NIM811, SCY-635, and Alisporivir have attracted more interests for appropriating CypA for antiviral chemotherapeutic target on HCV infection. This review describes CypA inhibitors as a potential HCC treatment tool that is contrived by their obstructing chronic HCV infection and summarizes roles of CypA in cancer development.
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Affiliation(s)
- Jinhwa Lee
- Department of Clinical Lab Science, School of Health Science, Dongseo University, Busan 617-716, Korea
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56
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Ceruti P, Principe M, Capello M, Cappello P, Novelli F. Three are better than one: plasminogen receptors as cancer theranostic targets. Exp Hematol Oncol 2013; 2:12. [PMID: 23594883 PMCID: PMC3640925 DOI: 10.1186/2162-3619-2-12] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2013] [Accepted: 03/28/2013] [Indexed: 12/22/2022] Open
Abstract
Activation of plasminogen on the cell surface initiates a cascade of protease activity with important implications for several physiological and pathological events. In particular, components of the plasminogen system participate in tumor growth, invasion and metastasis. Plasminogen receptors are in fact expressed on the cell surface of most tumors, and their expression frequently correlates with cancer diagnosis, survival and prognosis. Notably, they can trigger multiple specific immune responses in cancer patients, highlighting their role as tumor-associated antigens. In this review, three of the most characterized plasminogen receptors involved in tumorigenesis, namely Annexin 2 (ANX2), Cytokeratin 8 (CK8) and alpha-Enolase (ENOA), are analyzed to ascertain an overall view of their role in the most common cancers. This analysis emphasizes the possibility of delineating new personalized therapeutic strategies to counteract tumor growth and metastasis by targeting plasminogen receptors, as well as their potential application as cancer predictors.
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Affiliation(s)
- Patrizia Ceruti
- Center for Experimental Research and Medical Studies (CeRMS), Azienda Ospedaliera Città della Salute e della Scienza, Via Cherasco 15, Turin, 10126, Italy.,Department of Molecular Biotechnology and Health Science, University of Turin, Turin, Italy
| | - Moitza Principe
- Center for Experimental Research and Medical Studies (CeRMS), Azienda Ospedaliera Città della Salute e della Scienza, Via Cherasco 15, Turin, 10126, Italy.,Department of Molecular Biotechnology and Health Science, University of Turin, Turin, Italy
| | - Michela Capello
- Center for Experimental Research and Medical Studies (CeRMS), Azienda Ospedaliera Città della Salute e della Scienza, Via Cherasco 15, Turin, 10126, Italy.,Department of Molecular Biotechnology and Health Science, University of Turin, Turin, Italy
| | - Paola Cappello
- Center for Experimental Research and Medical Studies (CeRMS), Azienda Ospedaliera Città della Salute e della Scienza, Via Cherasco 15, Turin, 10126, Italy.,Department of Molecular Biotechnology and Health Science, University of Turin, Turin, Italy
| | - Francesco Novelli
- Center for Experimental Research and Medical Studies (CeRMS), Azienda Ospedaliera Città della Salute e della Scienza, Via Cherasco 15, Turin, 10126, Italy.,Department of Molecular Biotechnology and Health Science, University of Turin, Turin, Italy
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57
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Jia JW, Li KL, Wu JX, Guo SL. Clinical significance of annexin II expression in human non-small cell lung cancer. Tumour Biol 2013; 34:1767-71. [PMID: 23494179 DOI: 10.1007/s13277-013-0715-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2013] [Accepted: 02/24/2013] [Indexed: 12/23/2022] Open
Abstract
The aim of the present study is to explore the role of annexin II in the development and progression of human non-small cell lung cancer (NSCLC). Real-time quantitative reverse transcription-polymerase chain reaction was conducted to detect annexin II mRNA expression. Annexin II protein expression was also determined by western blot. In addition, annexin II expression was analyzed by immunohistochemistry in 137 clinicopathologically characterized NSCLC cases. The correlation of annexin II expression with patients' survival rate was assessed by Kaplan-Meier analysis and Cox regression. Our results showed that the expression levels of annexin II mRNA and protein in NSCLC tissues were significantly higher than those in non-cancerous tissues. Immunohistochemistry analysis showed that annexin II expression was significantly correlated with tumor diameter, pathological grade, pT status, pN status, and pleural invasion. The results of the Kaplan-Meier analysis indicated that a high expression level of annexin II resulted in a significantly poor prognosis of NSCLC patients. Multi-variate Cox regression analysis revealed that annexin II expression level was an independent prognostic parameter for the overall survival rate of NSCLC patients. In conclusion, these results suggested that annexin II up-regulation was associated with poor prognosis in NSCLC; therefore, it might act as a prognostic marker and a new potential target for NSCLC treatment.
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Affiliation(s)
- Jin-Wei Jia
- Department of Respiratory Medicine, The First Affiliated Hospital of Chongqing Medical University, No. 1, Youyi Road, Yuzhong District, Chongqing, 400016, China
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58
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Sun Y, Gao G, Cai J, Wang Y, Qu X, He L, Liu F, Zhang Y, Lin K, Ma S, Yang X, Qian X, Zhao X. Annexin A2 is a discriminative serological candidate in early hepatocellular carcinoma. Carcinogenesis 2012. [PMID: 23188673 PMCID: PMC3581600 DOI: 10.1093/carcin/bgs372] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
To date, the useful markers of hepatocellular carcinoma (HCC) remains incompletely developed. Here, we show that annexin A2 complement alpha-fetoprotein (AFP), a widely used liver cancer marker, in the serologically surveillance and early detection of HCC. First, differentially expressed proteins in HCC were identified using a subcellular proteomic approach. Annexin A2 was then selected for further verification. It was found to be overexpressed in HCC tissues (60.7%, 136/224). Using a self-estabished sandwich enzyme-linked immunosorbent assay, we found that annexin A2 significantly increased in the sera of HCC (n = 175, median, 24.75ng/µl) compared with the healthy (n = 49, median, 16.69ng/µl), benign tumors (n = 19, median, 19.92ng/µl), hepatitis (n = 23, median, 6.48ng/µl) and cirrhosis (n = 51, median, 7.39ng/µl) controls and other malignant tumors (n = 87). Importantly, raised concentrations of annexin A2 were observed in 83.2% (79/95) of early stage (median, 24.32ng/µl) and 78.4% (58/74) of AFP-negative (median, 24.09ng/µl) patients. Annexin A2 alone had a better area under the receiver-operating characteristic curve (AUC = 0.79, 95% confidence interval: 0.73–0.85) in comparison with AFP (AUC = 0.73, 95% confidence interval: 0.66–0.80) in detecting of early stage HCC. Combining both markers notably improved the diagnostic efficiency of early HCC with an achieved sensitivity of 87.4%. Additionally, the expression characteristics of annexin A2 during hepatocarcinogenesis were detected in p21-HBx gene knockin transgenic mice model. The results showed that annexin A2 expression was substantially elevated in HCC-bearing mice, in accordance with the finding in human samples. In conclusion, annexin A2 may be an independent serological candidate for hepatitis B virus–related HCC, especially in the early stage cases with normal serum AFP.
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Affiliation(s)
- Yulin Sun
- State Key Laboratory of Molecular Oncology, Cancer Institute & Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
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59
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Qian Z, Zhao X, Jiang M, Jia W, Zhang C, Wang Y, Li B, Yue W. Downregulation of cyclophilin A by siRNA diminishes non-small cell lung cancer cell growth and metastasis via the regulation of matrix metallopeptidase 9. BMC Cancer 2012; 12:442. [PMID: 23031673 PMCID: PMC3518206 DOI: 10.1186/1471-2407-12-442] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2012] [Accepted: 09/28/2012] [Indexed: 11/12/2022] Open
Abstract
Background Cyclophilin A (CypA) is a cytosolic protein possessing peptidyl-prolyl isomerase activity that was recently reported to be overexpressed in several cancers. Here, we explored the biology and molecular mechanism of CypA in non-small cell lung cancer (NSCLC). Methods The expression of CypA in human NSCLC cell lines was detected by real-time reverse transcription PCR. The RNA interference-mediated knockdown of CypA was established in two NSCLC cell lines (95C and A549). 239836 CypA inhibitor was also used to suppress CypA activity. Tumorigenesis was assessed based on cellular proliferation, colony formation assays, and anchorage-independent growth assays; metastasis was assessed based on wound healing and transwell assays. Results Suppression of CypA expression inhibited the cell growth and colony formation of A549 and 95C cells. CypA knockdown resulted in the inhibition of cell motility and invasion. Significantly, we show for the first time that CypA increased NSCLC cell invasion by regulating the activity of secreted matrix metallopeptidase 9 (MMP9). Likewise, suppression of CypA with 239836 CypA inhibitor decreased cell proliferation and MMP9 activity. Conclusions The suppression of CypA expression was correlated with decreased NSCLC cell tumorigenesis and metastasis.
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Affiliation(s)
- Zhe Qian
- Department of Cellular & Molecular Biology, Beijing TB and thoracic tumor research Institution/ Beijing Chest Hospital, Capital Medical University, 97 Beimachang, Tongzhou, Beijing, China
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Upregulated expression of annexin II is a prognostic marker for patients with gastric cancer. World J Surg Oncol 2012; 10:103. [PMID: 22681645 PMCID: PMC3433344 DOI: 10.1186/1477-7819-10-103] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2012] [Accepted: 06/08/2012] [Indexed: 12/15/2022] Open
Abstract
Background The role of annexin II in the development and progression of gastric cancer was explored. Methods Real-time PCR was conducted to detect annexin II and S100A6 mRNA expression. Protein expressions of annexin II and S100A6 were also examined by immunohistochemistry in 436 clinicopathologically characterized gastric cancer cases. Results The expression of annexin II and S100A6 mRNA differ significantly among gastric tumor tissue and matched non-cancerous gastric mucosa. Protein levels of annexin II and S100A6 were up-regulated in gastric cancer compared with adjacent non-cancerous tissues. High expression of annexin II correlated with age, location of tumor, size of tumor, differentiation, histological type, depth of invasion, vessel invasion, lymph node metastasis, distant metastasis and Tumor, Node, Metastasis (TNM) stage, and also with expression of S100A6. Further multivariate analysis suggested that expression of annexin II and S100A6 were independent prognostic indicators for gastric cancer. Cumulative five-year survival rates of patients with high expression of both annexin II and S100A6 was significantly lower than those with low expression of both. Conclusion Expression of annexin II in gastric cancer was significantly associated with depth of invasion, lymph node metastasis and distant metastasis, TNM stage, high S100A6 expression, and poor prognosis. Annexin II and S100A6 proteins could be useful prognostic marker to predict tumor progression and prognosis in gastric cancer.
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Laurindo FRM, Pescatore LA, Fernandes DDC. Protein disulfide isomerase in redox cell signaling and homeostasis. Free Radic Biol Med 2012; 52:1954-69. [PMID: 22401853 DOI: 10.1016/j.freeradbiomed.2012.02.037] [Citation(s) in RCA: 168] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2011] [Revised: 02/23/2012] [Accepted: 02/24/2012] [Indexed: 12/16/2022]
Abstract
Thiol proteins may potentially act as redox signaling adaptor proteins, adjusting reactive oxygen species intermediates to specific signals and redox signals to cell homeostasis. In this review, we discuss redox effects of protein disulfide isomerase (PDI), a thioredoxin superfamily oxidoreductase from the endoplasmic reticulum (ER). Abundantly expressed PDI displays ubiquity, interactions with redox and nonredox proteins, versatile effects, and several posttranslational modifications. The PDI family contains >20 members with at least some apparent complementary actions. PDI has oxidoreductase, isomerase, and chaperone effects, the last not directly dependent on its thiols. PDI is a converging hub for pathways of disulfide bond introduction into ER-processed proteins, via hydrogen peroxide-generating mechanisms involving the oxidase Ero1α, as well as hydrogen peroxide-consuming reactions involving peroxiredoxin IV and the novel peroxidases Gpx7/8. PDI is a candidate pathway for coupling ER stress to oxidant generation. Emerging information suggests a convergence between PDI and Nox family NADPH oxidases. PDI silencing prevents Nox responses to angiotensin II and inhibits Akt phosphorylation in vascular cells and parasite phagocytosis in macrophages. PDI overexpression spontaneously enhances Nox activation and expression. In neutrophils, PDI redox-dependently associates with p47phox and supports the respiratory burst. At the cell surface, PDI exerts transnitrosation, thiol reductase, and apparent isomerase activities toward targets including adhesion and matrix proteins and proteases. Such effects mediate redox-dependent adhesion, coagulation/thrombosis, immune functions, and virus internalization. The route of PDI externalization remains elusive. Such multiple redox effects of PDI may contribute to its conspicuous expression and functional role in disease, rendering PDI family members putative redox cell signaling adaptors.
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Affiliation(s)
- Francisco R M Laurindo
- Vascular Biology Laboratory, Heart Institute (InCor), University of São Paulo School of Medicine, 05403-000 São Paulo, Brazil.
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Qi YJ, Chao WX, Chiu JF. An overview of esophageal squamous cell carcinoma proteomics. J Proteomics 2012; 75:3129-37. [PMID: 22564818 DOI: 10.1016/j.jprot.2012.04.025] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2012] [Revised: 03/30/2012] [Accepted: 04/18/2012] [Indexed: 12/12/2022]
Abstract
Esophageal squamous cell carcinoma (ESCC) still remains the leading cancer-caused mortality in northern China, in particular in areas nearby Taihang Mountain. Late-stage diagnosis of ESCC increases the mortality and morbidity of ESCC. Therefore, it is imperative to identify biomarkers for early diagnosis, monitoring of tumor progression and identifying potential therapeutic targets of ESCC. Proteomics provides a functional translation of the genome and represents a richer source for the functional description of diseases and biomarkers implicated in cancer. In this review, we discuss the dysregulated proteins associated with ESCC identified by proteomic approaches and aim to enhance our understanding of molecular mechanisms implicated in ESCC development and progression from a proteomics perspective and discuss the potential biomarkers of ESCC as well.
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Affiliation(s)
- Yi-Jun Qi
- Key Laboratory of Cellular and Molecular Immunology, Institute of Immunology, Medical School of Henan University, Kaifeng, Henan, P. R. China
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63
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Proteomics of a new esophageal cancer cell line established from Persian patient. Gene 2012; 500:124-33. [PMID: 22441127 DOI: 10.1016/j.gene.2012.03.038] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2011] [Revised: 02/21/2012] [Accepted: 03/04/2012] [Indexed: 02/06/2023]
Abstract
Although the highest incidence of esophageal squamous cell carcinoma (ESCC) has repeatedly been reported from Persia (Iran), nevertheless the so far proteomic published reports were limited to one study on tissue specimens. Here we report the proteome of a newly established cell line from Persian ESCC patients and compare it with the normal primary cell proteome. Among polypeptides, whose expression was different in cell line sixteen polypeptides were identified by MALDI/TOF/TOF spectrometry. S100-A8 protein, annexin A1, annexin A2, regulatory subunit of calpain, subunit alpha type-3 of proteasome and glutamate dehydrogenase 1 were proteins down-regulated in cell line while peroxiredoxin-5, non-muscle myosin light polypeptide 6, keratin 1, annexin A4, keratin 8, tropomyosin 3, stress-induced-phosphoprotein 1 and albumin were found to be subject of up-regulation in cell line compared to the primary normal cells. The proteomic results were further verified by western blotting and RT-PCR on annexin A1 and keratin 8. In addition, among the aforementioned proteins, glutamate dehydrogenase 1, regulatory subunit of calpain, subunit alpha of type-3 proteasome and annexin A4 are proteins whose deregulation in ESCC is reported for the first time by this study.
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Lwin ZM, Yip GWC, Chew FT, Bay BH. Downregulation of ER60 protease inhibits cellular proliferation by inducing G1/S arrest in breast cancer cells in vitro. Anat Rec (Hoboken) 2012; 295:410-6. [PMID: 22266712 DOI: 10.1002/ar.22413] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2011] [Accepted: 12/24/2011] [Indexed: 01/17/2023]
Abstract
ER60 protease, a 58-kDa molecular chaperone in the endoplasmic reticulum, is involved in glycoprotein synthesis. ER60 protease has been reported to be differentially expressed in various cancers including breast carcinoma. This study explored the relationship of ER60 protease with cell proliferation in breast cancer in vitro. ER60 protease expression was first determined in a panel of breast cell lines by real-time RT-PCR and Western blot analysis and found to be most abundantly expressed in T47D breast cancer cells. The ER60 protease gene was then successfully knocked down in T47D breast cancer cells using two different sequences of small-interfering RNA. The silencing efficiencies of siER-1 and siER-2 at 48-hr post-transfection were found to be >80% at the mRNA level with concomitant downregulation of the ER60 protease protein by >60% when compared with control T47D breast cancer cells. Downregulation of ER60 protease was also associated with inhibition of cell proliferation when assessed by the AlamarBlue assay. Cell cycle analysis performed on the siER-1- and siER-2-transfected cells, revealed an increase in G1 phase population and a decrease in the S and G2/M phase populations compared with control cells, implicating G1/S cell cycle arrest. It would appear that ER60 protease is involved in breast tumorigenesis and could therefore be a prospective target for cancer therapeutics.
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Affiliation(s)
- Zin-Mar Lwin
- Department of Anatomy, National University of Singapore, Singapore
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Geng Y, Marshall JR, King MR. Glycomechanics of the metastatic cascade: tumor cell-endothelial cell interactions in the circulation. Ann Biomed Eng 2011; 40:790-805. [PMID: 22101756 DOI: 10.1007/s10439-011-0463-6] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2011] [Accepted: 11/02/2011] [Indexed: 02/07/2023]
Abstract
Hydrodynamic shear force plays an important role in the leukocyte adhesion cascade that involves the tethering and rolling of cells along the endothelial layer, their firm adhesion or arrest, and their extravasation or escape from the circulatory system by inducing passive deformation, or cell flattening, and microvilli stretching, as well as regulating the expression, distribution, and conformation of adhesion molecules on leukocytes and the endothelial layer. Similarly, the dissemination of circulating tumor cells (CTCs) from the primary tumor sites is believed to involve tethering, rolling, and firm adhesion steps before their eventual extravasation which leads to secondary tumor sites (metastasis). Of particular importance to both the leukocyte adhesion cascade and the extravasation of CTCs, glycoproteins are involved in all three steps (capture, rolling, and firm adhesion) and consist of a variety of important selectin ligands. This review article provides an overview of glycoprotein glycosylation associated with the abnormal glycan expression on cancer cell surfaces, where well-established and novel selectin ligands that are cancer related are discussed. An overview of computational approaches on the effects of fluid mechanical force on glycoprotein mediated cancer cell rolling and adhesion is presented with a highlight of recent flow-based and selectin-mediated cell capturing/enriching devices. Finally, as an important branch of the glycoprotein family, mucins, specifically MUC1, are discussed in the context of their aberrant expression on cancer cells and their role as cancer cell adhesion molecules. Since metastasis relies heavily on glycoprotein interactions in the bloodstream where the fluid shear stress highly regulates cell adhesion forces, it is important to study and understand the glycomechanics of all relevant glycoproteins (well-established and novel) as they relate to the metastatic cascade.
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Affiliation(s)
- Yue Geng
- Department of Biomedical Engineering, Cornell University, Ithaca, NY 14853, USA
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66
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Rodrigo JP, Lequerica-Fernández P, Rosado P, Allonca E, García-Pedrero JM, de Vicente JC. Clinical significance of annexin A2 downregulation in oral squamous cell carcinoma. Head Neck 2011; 33:1708-14. [PMID: 21500302 DOI: 10.1002/hed.21661] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/23/2010] [Indexed: 11/11/2022] Open
Abstract
BACKGROUND The purpose of this study was to determine the expression of Annexin A2 (ANXA2) in normal oral epithelium and in oral carcinomas to correlate these findings with prognostically relevant variables. METHODS ANXA2 expression in normal oral mucosa and in 106 oral squamous cell carcinomas was examined by immunohistochemistry. RESULTS ANXA2 expression was detected in basal and suprabasal cell layers of normal epithelium, and immunostaining was preferentially membrane-localized. ANXA2 expression was significantly correlated with the histopathological grade, tumor size, and recurrence, but ANXA2 expression was not an independent prognostic factor. CONCLUSION The reduction of ANXA2 expression in poorly differentiated tumors is expected to result in a loss of function aimed at the coordination of membrane signaling enzyme complexes. The consequences may manifest as an alteration of epithelial tissue growth and remodeling which eventually exert an influence on tumor progression and metastasis.
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Affiliation(s)
- Juan P Rodrigo
- Department of Otolaryngology, Hospital Universitario Central de Asturias, Oviedo, Spain
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67
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The role of annexin A2 in tumorigenesis and cancer progression. CANCER MICROENVIRONMENT 2011; 4:199-208. [PMID: 21909879 DOI: 10.1007/s12307-011-0064-9] [Citation(s) in RCA: 172] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2011] [Accepted: 02/21/2011] [Indexed: 02/06/2023]
Abstract
Annexin A2 is a calcium-dependent, phospholipid-binding protein found on various cell types. It is up-regulated in various tumor types and plays multiple roles in regulating cellular functions, including angiogenesis, proliferation, apoptosis, cell migration, invasion and adhesion. Annexin A2 binds with plasminogen and tissue plasminogen activator on the cell surface, which leads to the conversion of plasminogen to plasmin. Plasmin is a serine protease which plays a key role in the activation of metalloproteinases and degradation of extracellular matrix components essential for metastatic progression. We have recently found that both annexin A2 and plasmin are increased in conditioned media of co cultured ovarian cancer and peritoneal cells. Our studies suggest that annexin A2 is part of a tumor-host signal pathway between ovarian cancer and peritoneal cells which promotes ovarian cancer metastasis. Accumulating evidence suggest that interactions between annexin A2 and its binding proteins play an important role in the tumor microenvironment and act together to enhance cancer metastasis. This article reviews the current knowledge on the biological role of annexin A2 and its binding proteins in solid malignancies including ovarian cancer.
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68
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Molecular cloning, expression, and characterization of cyclophilin A from Clonorchis sinensis. Parasitol Res 2011; 109:345-51. [DOI: 10.1007/s00436-011-2262-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2010] [Accepted: 01/18/2011] [Indexed: 12/21/2022]
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Abstract
Cyclophilins (Cyps) belong to a group of proteins that have peptidyl-prolyl cis–trans isomerase (PPIase) and molecular chaperone activities. Originally, Cyps were identified as the intracellular receptors for the immunosuppressive drug cyclosporin A. Cyps are found in all prokaryotes and eukaryotes, and have been structurally conserved throughout evolution, implying their importance in cellular function. There are seven major Cyp isoforms in humans. CypA is up-regulated in many human cancers, and there is a strong correlation between over-expression of the CYPA gene and malignant transformation in some cancers. Moreover, CypA is directly under the transcriptional control of two critical transcription factors for cancer development: p53 and hypoxia inducible factor-1α. This review discusses the general biological functions of Cyps under a variety of stress conditions, and the importance and diverse roles of over-expression of CYP genes in human cancers, with a particular emphasis on CYPA. These oncogenic properties suggest that CypA is a promising target for cancer therapy.
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Affiliation(s)
- J Lee
- Department of Biomedical Laboratory Science, Dongseo University, Busan, Republic of Korea
| | - SS Kim
- Department of Biochemistry and Molecular Biology, Medical Science and Engineering Research Centre for Bioreaction to Reactive Oxygen Species (BK-21) and Biomedical Science Institute, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
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70
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Chiu K, Zhou Y, Yeung SC, Lok CKM, Chan OOC, Chang RCC, So KF, Chiu JF. Up-regulation of crystallins is involved in the neuroprotective effect of wolfberry on survival of retinal ganglion cells in rat ocular hypertension model. J Cell Biochem 2010; 110:311-20. [PMID: 20336662 DOI: 10.1002/jcb.22539] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Wolfberry (fruit of Lycium barbarum Linn) has been known for balancing 'Yin' and 'Yang' in the body, nourishing the liver and kidney, improving visual acuity for more than 2,500 years in oriental countries. The active components in wolfberry include L. barbarum polysaccharide (LBP), zeaxanthine, betaine, cerebroside and trace amounts of zinc, iron, and copper. Each of them confers distinct beneficial effects and together they help to explain widespread use of wolfberry in the eastern world. Earlier study reported the neuroprotective effects of LBP on retinal ganglion cell (RGC) in an experimental model of glaucoma and the underlying in vivo cellular mechanisms of LBP neuroprotection deserve further exploration. In this study, we adopted proteomics, functional genomics, to evaluate pharmacological effects of LBP on the neuronal survival pathways. Among the significantly changed proteins induced by LBP feeding on ocular hypertension (OH) retinas, only proteins in crystallin family were focused in this study. The proteomic results were further confirmed using the Western blotting of the retinas and immunohistochemical staining of the retinal sections. We demonstrated that neuroprotective effect of-wolfberry extract-LBP on the survival of RGCs may be mediated via direct up-regulation of neuronal survival signal betaB2-crystallin.
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Affiliation(s)
- Kin Chiu
- Laboratory of Neurodegenerative Diseases, Department of Anatomy, LKS Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
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71
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Lee J, Kim SS. Current implications of cyclophilins in human cancers. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2010; 29:97. [PMID: 20637127 PMCID: PMC2912272 DOI: 10.1186/1756-9966-29-97] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 04/27/2010] [Accepted: 07/19/2010] [Indexed: 12/28/2022]
Affiliation(s)
- Jinhwa Lee
- Department of Biomedical Laboratory Science, Dongseo University, Busan 617-716, Korea
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72
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Zhou Q, Chaerkady R, Shaw PG, Kensler TW, Pandey A, Davidson NE. Screening for therapeutic targets of vorinostat by SILAC-based proteomic analysis in human breast cancer cells. Proteomics 2010; 10:1029-39. [PMID: 20049865 DOI: 10.1002/pmic.200900602] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Histone deacetylases (HDACs) play critical roles in silencing tumor suppressor genes. HDAC inhibitors reactivate tumor suppressor genes and inhibit tumor cell growth in vitro and in vivo, and several HDAC inhibitors are currently being evaluated in clinical trials for cancer therapy. A comprehensive analysis of proteins regulated by HDAC inhibitors would enhance our ability to define and characterize their essential therapeutic targets. Here, we employed stable isotope labeling with amino acids in cell culture-based quantitative proteomics to identify acetylated proteins in human breast cancer cells. Treatment with the clinically relevant HDAC inhibitor, suberoylanilide hydroxamic acid (vorinostat), induces lysine acetylation of 61 proteins in MDA-MB-231 human breast cancer cells. Suberoylanilide hydroxamic acid not only induces lysine acetylation in chromatin-associated proteins, but also acetylates previously unrecognized nonhistone proteins, including transcriptional factors and regulators, chaperones, cell structure proteins, and glycolytic enzymes in a time-dependent manner. Knowledge of the full repertoire of acetylated proteins will provide a foundation for further defining the functions of HDACs in cancer cells.
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Affiliation(s)
- Qun Zhou
- Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, MD, USA
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73
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Cho SO, Lim JW, Jun JH, Kim KH, Kim H. Helicobacter pylori in a Korean isolate expressed proteins differentially in human gastric epithelial cells. Dig Dis Sci 2010; 55:1550-64. [PMID: 19672714 DOI: 10.1007/s10620-009-0908-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2009] [Accepted: 07/05/2009] [Indexed: 12/19/2022]
Abstract
PURPOSE The proteins expressed in gastric epithelial cells infected with Helicobacter pylori (H. pylori) may determine the clinical outcome such as chronic gastritis, peptic ulcer, and gastric carcinoma. The present study aims to determine the differentially expressed proteins in human gastric epithelial AGS cells that were infected with H. pylori in a Korean isolate, a cagA+, vacA s1b m2 iceA1 H. pylori by proteomic analysis. The differentially expressed proteins, whose expression levels were more or less than twofold in H. pylori-infected cells, were analyzed. RESULTS Ten proteins (chromatin assembly factor-1, proliferating cell nuclear antigen, 14-3-3 protein tau, eukaryotic translation initiation factor 6, heat-shock protein 90beta, dimethylarginine dimethylaminohydrolase-1, L-lactate dehydrogenase B chain, prohibitin, triosephosphate isomerase, protein disulfide isomerase) were up-regulated while eight proteins (heat-shock gp96 precursor, nucleophosmin, ornithine aminotransferase, Ku70, L-arginine-glycine amidinotransferase, Smad anchor for receptor activation, ADP-ribosylation factor, WD repeat-containing protein isoform 1) were down-regulated by H. pylori infection in AGS cells. These proteins are related to cell proliferation, cell adhesion, carcinogenesis, cell-defense mechanisms against oxidative stress, membrane trafficking, and energy metabolism. CONCLUSIONS Oxidative stress, cell proliferation, cell adhesion, and membrane trafficking may be involved in the pathogenesis of gastric diseases including cancer associated with H. pylori in a Korean isolate.
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Affiliation(s)
- Soon Ok Cho
- Department of Pharmacology, Brain Korea 21 Project for Medical Sciences, Yonsei University College of Medicine, Seoul, Korea
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Knockdown of CypA inhibits interleukin-8 (IL-8) and IL-8-mediated proliferation and tumor growth of glioblastoma cells through down-regulated NF-κB. J Neurooncol 2010; 101:1-14. [PMID: 20454998 PMCID: PMC2995866 DOI: 10.1007/s11060-010-0220-y] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2010] [Accepted: 04/28/2010] [Indexed: 01/04/2023]
Abstract
Although cyclophilin A (CypA) has been reported to be over-expressed in cancer cells and solid tumors, its expression and role in glioblastomas have not been studied. Herein, we show that expression of CypA in human glioblastoma cell lines and tissues is significantly higher than in normal human astrocytes and normal counterparts of brain tissue. To determine the role of over-expressed CypA in glioblastoma, stable RNA interference (RNAi)-mediated knockdown of CypA (CypA KD) was performed in gliobastoma cell line U87vIII (U87MG · ΔEGFR). CypA KD stable single clones decrease proliferation, infiltration, migration, and anchorage-independent growth in vitro and with slower growth in vivo as xenografts in immunodeficient nude mice. We have also observed that knockdown of CypA inhibits expression of interleukin-8 (IL-8), a tumorigenic and proangiogenic cytokine. Conversely, enforced expression of CypA in the CypA KD cell line, Ud-12, markedly enhanced IL-8 transcripts and restored Ud-12 proliferation, suggesting that CypA-mediated IL-8 production provides a growth advantage to glioblastoma cells. CypA knockdown-mediated inhibition of IL-8 is due to reduced activity of NF-κB, which is one of the major transcription factors regulating IL-8 expression. These results not only establish the relevance of CypA to glioblastoma growth in vitro and in vivo, but also suggest that small interfering RNA-based CypA knockdown could be an effective therapeutic approach against glioblastomas.
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Decreased GRP78 Protein Expression is a Potential Prognostic Marker of Oral Squamous Cell Carcinoma in Taiwan. J Formos Med Assoc 2010; 109:326-37. [DOI: 10.1016/s0929-6646(10)60060-5] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2008] [Revised: 11/16/2008] [Accepted: 08/20/2009] [Indexed: 11/23/2022] Open
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Li X, Li Y, Kang X, Guo K, Li H, Gao D, Sun L, Liu Y. Dynamic alteration of protein expression profiles during neoplastic transformation of rat hepatic oval-like cells. Cancer Sci 2010; 101:1099-107. [PMID: 20331632 PMCID: PMC11159373 DOI: 10.1111/j.1349-7006.2010.01513.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
To explore the molecular basis of neoplastic transformation of hepatic oval cells, a proteomic strategy was utilized to examine the global protein expression alterations during neoplastic transformation of rat hepatic oval-like cells. N-methyl-N'-nitro-N-nitrosoguanidine (MNNG)-initiated WB-F344 cells were treated with H(2)O(2) for neoplastic transformation. The transformed cells were identified by soft agar assay and MTT assay. The subsequent proteomic separation and identification were performed with 2-DE followed by MALDI-TOF-MS/MS analysis. Of the 148 differentially displayed protein spots analyzed, 121 spots representing 79 distinct proteins were finally identified. The expression levels of interested proteins were validated by western blotting including 40 S ribosomal protein A (RPSA) and cytokeratin 8. Bioinformatics annotations indicated that these identified proteins were enriched with oxidoreduction and stress response; transcription, translation, and protein processing; and energy/metabolism functions. Interestingly, 17 of the identified proteins were also found to be involved in early hepatic differentiation of mouse embryonic stem (ES) cells in our previous study. Twenty-six proteins had been reported as being dysregulated in hepatocellular carcinoma and other cancers. It suggested that these changed proteins may be implicated in neoplastic transformation of WB-F344 cells. The results may provide some clues for understanding the molecular mechanisms of hepatocarcinogenesis as viewed from dysregulation of differentiation.
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Affiliation(s)
- Xuefei Li
- Liver Cancer Institute, Affiliated Zhongshan Hospital of Fudan University, Shanghai, China
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Mathias RA, Chen YS, Wang B, Ji H, Kapp EA, Moritz RL, Zhu HJ, Simpson RJ. Extracellular remodelling during oncogenic Ras-induced epithelial-mesenchymal transition facilitates MDCK cell migration. J Proteome Res 2010; 9:1007-19. [PMID: 19954229 DOI: 10.1021/pr900907g] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Epithelial-mesenchymal transition (EMT) describes a process whereby immotile epithelial cells escape structural constraints imposed by cellular architecture and acquire a phenotype characteristic of migratory mesenchymal cells. Implicated in carcinoma progression and metastasis, EMT has been the focus of several recent proteomics-based studies aimed at identifying new molecular players. To gain insights into extracellular mediators associated with EMT, we conducted an extensive proteomic analysis of the secretome from MDCK cells following oncogenic Ras-induced EMT (21D1 cells). Using Orbitrap technology and a label-free quantitative approach, differential expression of several secreted modulators were revealed. Proteomic findings were further substantiated by mRNA transcript expression analysis with 71% concordance. MDCK cells undergoing Ras-induced EMT remodel the extracellular matrix (ECM) via diminished expression of basement membrane constituents (collagen type IV and laminin 5), up-regulation of extracellular proteases (MMP-1, kallikreins -6 and -7), and increased production and secretion of ECM constituents (SPARC, collagen type I, fibulins -1 and -3, biglycan, and decorin). Collectively, these findings suggest that hierarchical regulation of a subset of extracellular effectors may coordinate a biological response during EMT that enhances cell motility. Transient silencing of MMP-1 in 21D1 cells via siRNA-mediated knockdown attenuated cell migration. Many of the secretome proteins identified broaden our understanding of the EMT process.
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Affiliation(s)
- Rommel A Mathias
- Joint Proteomics Laboratory, Ludwig Institute for Cancer Research, Parkville, Victoria, Australia
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Liu WJ, Qin HL, Ma YL, Peng JY. Heat shock protein 27: a potential biomarker for colorectal carcinoma. Shijie Huaren Xiaohua Zazhi 2010; 18:1237-1243. [DOI: 10.11569/wcjd.v18.i12.1237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To find specific biomarkers for colorectal carcinoma using a proteomic method to provide clues to early diagnosis, prognosis and therapy of colorectal carcinoma as well as to understanding the molecular mechanisms governing cancer progression.
METHODS: Six colorectal carcinoma patients were included in the study. High-resolution two-dimensional gel electrophoresis (2-DE) and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS) were utilized for the identification of proteins differentially expressed between cancer and adjacent non-cancerous tissue. The differential expression of heat shock protein 27 (HSP27) was further verified by Western blot and immunohistochemistry.
RESULTS: Comparative analysis of 2-DE maps revealed 42 differentially expressed proteins between the two groups. Ten differential proteins were further identified by mass spectrometry, including HSP27, disulfide isomerase (DI), heterogeneous nuclear ribonucleoprotein A2/B1 (HnRNP A2/B1), triosephosphate isomerase (TIM), pyruvate kinase, etc. Western blot and immunohistochemistry analyses confirmed the overexpression of HSP27 in colorectal carcinoma. These results indicate that HSP27 may be a potential biomarker for colorectal cancer.
CONCLUSION: Many differential proteins are identified between cancer and adjacent non-cancerous tissue in patients with colorectal carcinoma. HSP27 might be a potential biomarker for early diagnosis, therapy and prognosis of colorectal carcinoma.
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Chung KH, Lee DH, Kim Y, Kim TH, Huh JH, Chung SG, Lee S, Lee C, Ko JJ, An HJ. Proteomic identification of overexpressed PRDX 1 and its clinical implications in ovarian carcinoma. J Proteome Res 2010; 9:451-7. [PMID: 19902980 DOI: 10.1021/pr900811x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Ovarian carcinoma is the most lethal gynecological malignancy in worldwide. The discovery of reliable marker for early detection of ovarian carcinoma is critical for increasing patient's survival because high mortality rate is associated with late diagnosis of this tumor. In the present study, we performed comparative analysis of whole proteomes between serous borderline tumor and serous carcinoma to identify a useful biomarker for the early diagnosis and progression of ovarian carcinoma. Nine proteins were significantly overexpressed in ovarian serous carcinomas compared to borderline tumors. After validation with Western blotting and immunohistochemical analysis, prdx 1 was found to be the strongest overexpressed protein in malignant ovarian tumors among the selected proteins. In addition, the high level of prdx 1 expression (>50% positive cancer cells) was significantly correlated with poor overall survival in ovarian serous carcinomas. On a multivariate cox analysis, the relative risk of death was 8.74 in patients with serous carcinomas showing >50% of prdx 1-positive cancer cells. Our results suggest that prdx 1 may be a useful diagnostic and prognostic biomarker in ovarian carcinoma, especially serous carcinoma.
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Affiliation(s)
- Kwang-Hoe Chung
- Department of Biochemistry, College of Medicine, and College of Life Science, CHA University, Sungnam, South Korea
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Cyclophilin A as negative regulator of apoptosis by sequestering cytochrome c. Biochem Biophys Res Commun 2010; 393:325-30. [DOI: 10.1016/j.bbrc.2010.01.135] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2010] [Accepted: 01/29/2010] [Indexed: 12/24/2022]
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81
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Role of cyclophilin a during oncogenesis. Arch Pharm Res 2010; 33:181-7. [PMID: 20195816 DOI: 10.1007/s12272-010-0200-y] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2009] [Accepted: 01/04/2010] [Indexed: 02/02/2023]
Abstract
Cyclophilins (Cyps) are ubiquitously expressed proteins that are evolutionarily conserved. CypA is the most abundant among the Cyps and is expressed in the cytosol. With its chaperone and PPIase activities, CypA contributes to the maintenance of correct conformation of nascent or denatured proteins and also provides protection against environmental insults. Also, its expression is induced in response to a wide variety of stressors including cancer. Upregulation of CypA in small cell lung cancer, pancreatic cancer, breast cancer, colorectal cancer, squamous cell carcinoma and melanoma has been reported. In some cancers a correlation between CypA overexpression and malignant transformation has been established. While molecular partners of CypA that promote cancer development are yet to be discovered, various mechanisms have been proposed to account for the cytoprotective functions of CypA during cancer development. CypA may promote the survival of cells under the stressful condition of cancer. CypA may well be essential for maintaining the conformation of oncogenic proteins, signalling proteins for cell proliferation, antiapoptotic components, transcription factors, or cell motility regulatory proteins. Antioxidant effects of CypA, which have been suggested by some researchers, may also become critical to reactive oxygen species (ROS) creating an oncogenetic environment. Developing new CypA inhibitors for therapeutics has been surmised from the cytoprotective functions of CypA and its overexpression in many cancer types. Therefore, CypA can be further investigated as a useful tool for early diagnosis, treatment and prevention of human cancers.
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Identification of HSP27 as a potential tumor marker for colorectal cancer by the two-dimensional polyacrylamide gel electrophoresis. Mol Biol Rep 2009; 37:3207-16. [PMID: 19842058 DOI: 10.1007/s11033-009-9903-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2009] [Accepted: 10/02/2009] [Indexed: 12/20/2022]
Abstract
The identification of specific biomarkers for colorectal cancer would provide the basis for early diagnosis, prognosis, therapy, as well as clues for understanding the molecular mechanisms governing cancer progression. This study was designed to use comparative proteomics technology to find the differentially expressed proteins between human colorectal carcinoma and the corresponding normal tumor-adjacent colorectal tissues. We have used the highly sensitive two-dimensional gel electrophoresis (2-DE) coupled with matrix-assisted laser desorption/ionization time of flight mass spectrometry (MALDI-TOF-MS) for the identification of proteins differentially expressed in tumoral and neighboring normal mucosa. We have detected differences in abundance of 42 proteins with statistical variance of the tumor versus normal spot volume ratio within the 95th confidence level (Student's t-test; P < 0.05). 10 out of 42 analyzed proteins were unambiguously identified by MS coupled with database interrogation as being differentially expressed in colorectal cancer. Of the 10 newly implicated proteins, HSP27 was chosen for detailed analysis. Preliminary studies demonstrated that the differentially expressed proteins found by 2-DE could be confirmed and validated by western blotting and immunohistochemistry analyses in those few cases. The results suggest that HSP27 might be a potential biomarker for early diagnosis, prognosis, monitoring in the therapy of colorectal carcinoma.
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83
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Xu SY, Liu Z, Ma WJ, Sheyhidin I, Zheng ST, Lu XM. New potential biomarkers in the diagnosis of esophageal squamous cell carcinoma. Biomarkers 2009; 14:340-6. [PMID: 19552569 DOI: 10.1080/13547500902903055] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
OBJECTIVE To analyse the alterations of serum proteins in cases of esophageal squamous cell carcinoma (ESCC) in order to screen and validate serum marker patterns for the diagnosis of ESCC in the high-risk populations of Xinjiang, China. METHODS The serum proteomic patterns of 188 cases, including 139 patients with ESCC (54 Uygur, 45 Kazakh and 40 Han subjects) and 49 sex- and age-matched healthy controls, were detected using the SELDI-TOF-MS (surface-enhanced laser desorption/ionization-time of flight-mass spectrometry) technology with the CM10 ProteinChip. Differences in protein peaks between patients with ESCC and controls were analysed using the Biomarker Pattern Software, and a primary diagnosis model of ESCC was developed and validated with SVM (support vector machines). This model was further evaluated by a large-scale blind test. RESULTS Two hundred and eighty-three protein peaks were detected within the molecular range of 0-20 kDa, among which, 140 peaks were significantly different between ESCC cases and controls (p < 0.05). A diagnostic pattern consisting of six protein peaks (m/z 5667, 5709, 5876, 5979, 6043 and 6102) was established with a sensitivity of 97.12% and a specificity of 83.87%. The large-scale blind test generated a sensitivity of 91.43% and a specificity of 88.89%. CONCLUSIONS The differential protein peaks analysed by SELDI-TOF-MS may contain promising serum biomarkers for screening ESCC. The diagnostic model which combined only six protein peaks had a satisfactory discriminatory power. The model should be further evaluated in other populations of ESCC patients and tested against controls. The nature and function of the discriminating proteins have yet to be elucidated.
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Affiliation(s)
- Shu-Yong Xu
- Medical Research Center, 1st Teaching Hospital, Xinjiang Medical University, Urumqi, Xinjiang Uygur Autonomous Region, China
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Prokocimer M, Davidovich M, Nissim-Rafinia M, Wiesel-Motiuk N, Bar DZ, Barkan R, Meshorer E, Gruenbaum Y. Nuclear lamins: key regulators of nuclear structure and activities. J Cell Mol Med 2009; 13:1059-85. [PMID: 19210577 PMCID: PMC4496104 DOI: 10.1111/j.1582-4934.2008.00676.x] [Citation(s) in RCA: 202] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2008] [Accepted: 01/19/2009] [Indexed: 11/27/2022] Open
Abstract
The nuclear lamina is a proteinaceous structure located underneath the inner nuclear membrane (INM), where it associates with the peripheral chromatin. It contains lamins and lamin-associated proteins, including many integral proteins of the INM, chromatin modifying proteins, transcriptional repressors and structural proteins. A fraction of lamins is also present in the nucleoplasm, where it forms stable complexes and is associated with specific nucleoplasmic proteins. The lamins and their associated proteins are required for most nuclear activities, mitosis and for linking the nucleoplasm to all major cytoskeletal networks in the cytoplasm. Mutations in nuclear lamins and their associated proteins cause about 20 different diseases that are collectively called laminopathies'. This review concentrates mainly on lamins, their structure and their roles in DNA replication, chromatin organization, adult stem cell differentiation, aging, tumorogenesis and the lamin mutations leading to laminopathic diseases.
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Affiliation(s)
- Miron Prokocimer
- Department of Genetics, The Institute of Life Sciences, The Hebrew University of JerusalemJerusalem, Israel
| | - Maya Davidovich
- Department of Genetics, The Institute of Life Sciences, The Hebrew University of JerusalemJerusalem, Israel
| | - Malka Nissim-Rafinia
- Department of Genetics, The Institute of Life Sciences, The Hebrew University of JerusalemJerusalem, Israel
| | - Naama Wiesel-Motiuk
- Department of Genetics, The Institute of Life Sciences, The Hebrew University of JerusalemJerusalem, Israel
| | - Daniel Z Bar
- Department of Genetics, The Institute of Life Sciences, The Hebrew University of JerusalemJerusalem, Israel
| | - Rachel Barkan
- Department of Genetics, The Institute of Life Sciences, The Hebrew University of JerusalemJerusalem, Israel
| | - Eran Meshorer
- Department of Genetics, The Institute of Life Sciences, The Hebrew University of JerusalemJerusalem, Israel
| | - Yosef Gruenbaum
- Department of Genetics, The Institute of Life Sciences, The Hebrew University of JerusalemJerusalem, Israel
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85
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Sakaeda T, Yamamori M, Kuwahara A, Nishiguchi K. Pharmacokinetics and pharmacogenomics in esophageal cancer chemoradiotherapy. Adv Drug Deliv Rev 2009; 61:388-401. [PMID: 19135108 DOI: 10.1016/j.addr.2008.10.005] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2008] [Accepted: 10/30/2008] [Indexed: 12/15/2022]
Abstract
Esophageal cancer is one of the most lethal malignancies. Surgical resection of the tumor from the primary site has been the standard treatment, especially for localized squamous cell carcinoma, but considerable clinical efforts during the last decade have resulted in novel courses of treatment. These options include chemoradiotherapy, consisting of a continuous infusion of 5-fluorouracil (5-FU), cisplatin (CDDP), and concurrent radiation. Given the substantial inter- and/or intra-individual variation in clinical outcome, future improvements will likely require the incorporation of a novel anticancer drug, pharmacokinetically guided administration of CDDP or 5-FU, and identification of potential responders by patient genetic profiling prior to treatment. In this review, the latest information on incidence, risk factors, biomarkers, therapeutic strategies, and the pharmacokinetically guided or genotype-guided administration of CDDP and 5-FU is summarized for future individualization of esophageal cancer treatment.
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Affiliation(s)
- Toshiyuki Sakaeda
- Center for Integrative Education of Pharmacy Frontier, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan.
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86
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Li XQ, Zhang SL, Cai Z, Zhou Y, Ye TM, Chiu JF. Proteomic identification of tumor-associated protein in ovarian serous cystadenocarinoma. Cancer Lett 2009; 275:109-16. [DOI: 10.1016/j.canlet.2008.10.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2008] [Revised: 09/19/2008] [Accepted: 10/08/2008] [Indexed: 10/21/2022]
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87
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Grosso AR, Martins S, Carmo-Fonseca M. The emerging role of splicing factors in cancer. EMBO Rep 2008; 9:1087-93. [PMID: 18846105 DOI: 10.1038/embor.2008.189] [Citation(s) in RCA: 138] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2008] [Accepted: 09/05/2008] [Indexed: 11/09/2022] Open
Abstract
Recent progress in global sequence and microarray data analysis has revealed the increasing complexity of the human transcriptome. Alternative splicing generates a huge diversity of transcript variants and disruption of splicing regulatory networks is emerging as an important contributor to various diseases, including cancer. Current efforts to establish the dynamic repertoire of transcripts that are generated in health and disease are showing that many cancer-associated alternative-splicing events occur in the absence of mutations in the affected genes. A growing body of evidence reveals changes in splicing-factor expression that correlate with cancer development, progression and response to therapy. Here, we discuss how recent links between cancer and altered expression of proteins implicated in splicing regulation are bringing the splicing machinery to the fore as a potential target for anticancer treatment.
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Affiliation(s)
- Ana Rita Grosso
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028 Lisboa, Portugal
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88
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Zhong LP, Wei KJ, Yang X, Zhang L, Zhou XJ, Pan HY, Li J, Chen WT, Zhang ZY. Increased expression of Annexin A2 in oral squamous cell carcinoma. Arch Oral Biol 2008; 54:17-25. [PMID: 18822406 DOI: 10.1016/j.archoralbio.2008.08.006] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2008] [Revised: 08/13/2008] [Accepted: 08/14/2008] [Indexed: 11/28/2022]
Abstract
Previously, in vitro cellular carcinogenesis model of oral squamous cell carcinoma (OSCC) was established with a line of human immortalized oral epithelia cells (HIOECs), a line of cancerous HB96 cells, and another kind of cells (HB56 cells) at the early stage of carcinogenesis. In this study, comparative proteomic analysis identified a panel of differentially expressed proteins among these cells, and Annexin A2 shown as one of the significantly up-regulated proteins accompanying cellular transformation. Annexin A2 was further validated for its expression in the three kinds of cells and in the clinical samples of tumour tissues and their adjacent normal epithelia from primary OSCC patients. Western blot analysis and real-time PCR detected increased Annexin A2 protein and mRNA levels in cancerous HB56 and HB96 cells over HIOECs. Immunohistochemistry showed elevated Annexin A2 protein expression in tumour tissues over the adjacent non-malignant epithelia from OSCC patients; however, the mRNA levels between tumour and normal tissues did not change significantly. Interestingly, levels of Annexin A2 protein expression negatively correlated with the tumour differentiation grades. The results presented here suggest that Annexin A2 protein may play important roles in carcinogenesis of OSCC, and it may also serve as a candidate biomarker for pathologic differentiation grade of OSCC.
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Affiliation(s)
- Lai-ping Zhong
- Department of Oral and Maxillofacial Surgery, Ninth People's Hospital, School of Stomatology, Shanghai Jiao Tong University School of Medicine, China
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