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Peng HH, Yang HC, Rupa D, Yen CH, Chiu YW, Yang WJ, Luo FJ, Yuan TC. ACK1 upregulated the proliferation of head and neck squamous cell carcinoma cells by promoting p27 phosphorylation and degradation. J Cell Commun Signal 2022; 16:567-578. [PMID: 35247157 PMCID: PMC9733751 DOI: 10.1007/s12079-022-00670-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 02/02/2022] [Indexed: 12/24/2022] Open
Abstract
Head and neck squamous cell carcinoma (HNSCC) is a malignancy with a worldwide distribution. Although intensive studies have been made, the underlying oncogenic mechanism of HNSCC requires further investigation. In this study, we examined the oncogenic role of activated Cdc42-associated kinase 1 (ACK1), an oncogenic tyrosine kinase, in regulating the proliferation of HNSCC cells and its underlying molecular mechanism. Results from immunohistochemical studies revealed that ACK1 was highly expressed in HNSCC tumors, with 77% (77/100) of tumors showing a high ACK1 immunoreactivity compared to 40% (8/20) of normal mucosa. Knockdown of ACK1 expression in HNSCC cells resulted in elevated p27 expression, reduced cell proliferation, and G1-phase cell cycle arrest. Rescue of ACK1 expression in the ACK1-knockdown cells suppressed p27 expression and restored cell proliferation. Compared to ACK1-knockdown cells, ACK1-rescued cells exhibited a restored p27 expression after MG132 treatment and showed an elevated level of ubiquitinated p27. Our data further showed that knockdown of ubiquitin ligase Skp2 resulted in elevated p27 expression. Importantly, the expression of p27(WT), p27(Y74F), or p27(Y89F) in ACK1-overexpressed 293T cells or ACK1-rescued SAS cells showed higher levels of tyrosyl-phosphorylated p27 and interaction with ACK1 or Skp2. However, the expression of p27(Y88F) mutant exhibited a relatively low phosphorylation level and barely bound with ACK1 or Skp2, showing a basal interaction as the control cells. These results suggested that ACK1 is highly expressed in HNSCC tumors and functions to promote cell proliferation by the phosphorylation and degradation of p27 in the Skp2-mediated mechanism.
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Affiliation(s)
- Hsuan-Hsiang Peng
- grid.260567.00000 0000 8964 3950Department of Life Science, National Dong Hwa University, No. 1, Sec. 2, Da Hsueh Rd., Shoufeng, Hualien, 974301 Taiwan, Republic of China
| | - Hao-Chin Yang
- grid.260567.00000 0000 8964 3950Department of Life Science, National Dong Hwa University, No. 1, Sec. 2, Da Hsueh Rd., Shoufeng, Hualien, 974301 Taiwan, Republic of China
| | - Darius Rupa
- grid.260567.00000 0000 8964 3950Department of Life Science, National Dong Hwa University, No. 1, Sec. 2, Da Hsueh Rd., Shoufeng, Hualien, 974301 Taiwan, Republic of China
| | - Chun-Han Yen
- grid.260567.00000 0000 8964 3950Department of Life Science, National Dong Hwa University, No. 1, Sec. 2, Da Hsueh Rd., Shoufeng, Hualien, 974301 Taiwan, Republic of China
| | - Ya-Wen Chiu
- grid.260567.00000 0000 8964 3950Department of Life Science, National Dong Hwa University, No. 1, Sec. 2, Da Hsueh Rd., Shoufeng, Hualien, 974301 Taiwan, Republic of China
| | - Wei-Jia Yang
- grid.415323.20000 0004 0639 3300Department of Pathology, Mennonite Christian Hospital, Hualien, 970 Taiwan, Republic of China
| | - Fuh-Jinn Luo
- grid.415323.20000 0004 0639 3300Department of Pathology, Mennonite Christian Hospital, Hualien, 970 Taiwan, Republic of China
| | - Ta-Chun Yuan
- grid.260567.00000 0000 8964 3950Department of Life Science, National Dong Hwa University, No. 1, Sec. 2, Da Hsueh Rd., Shoufeng, Hualien, 974301 Taiwan, Republic of China
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Li L, Zhang Y, Ren Y, Cheng Z, Zhang Y, Wang X, Zhao H, Lu H. Pan-Cancer Single-Cell Analysis Reveals the Core Factors and Pathway in Specific Cancer Stem Cells of Upper Gastrointestinal Cancer. Front Bioeng Biotechnol 2022; 10:849798. [PMID: 35646860 PMCID: PMC9136039 DOI: 10.3389/fbioe.2022.849798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 04/07/2022] [Indexed: 12/24/2022] Open
Abstract
Upper gastrointestinal cancer (UGIC) is an aggressive carcinoma with increasing incidence and poor outcomes worldwide. Here, we collected 39,057 cells, and they were annotated into nine cell types. By clustering cancer stem cells (CSCs), we discovered the ubiquitous existence of sub-cluster CSCs in all UGICs, which is named upper gastrointestinal cancer stem cells (UGCSCs). The identification of UGCSC function is coincident with the carcinogen of UGICs. We compared the UGCSC expression profile with 215,291 single cells from six other cancers and discovered that UGCSCs are specific tumor stem cells in UGIC. Exploration of the expression network indicated that inflammatory genes (CXCL8, CXCL3, PIGR, and RNASE1) and Wnt pathway genes (GAST, REG1A, TFF3, and ZG16B) are upregulated in tumor stem cells of UGICs. These results suggest a new mechanism for carcinogenesis in UGIC: mucosa damage and repair caused by poor eating habits lead to chronic inflammation, and the persistent chronic inflammation triggers the Wnt pathway; ultimately, this process induces UGICs. These findings establish the core signal pathway that connects poor eating habits and UGIC. Our system provides deeper insights into UGIC carcinogens and a platform to promote gastrointestinal cancer diagnosis and therapy.
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Affiliation(s)
- Leijie Li
- SJTU-Yale Joint Center for Biostatistics and Data Science, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Yujia Zhang
- SJTU-Yale Joint Center for Biostatistics and Data Science, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Yongyong Ren
- SJTU-Yale Joint Center for Biostatistics and Data Science, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Zhiwei Cheng
- SJTU-Yale Joint Center for Biostatistics and Data Science, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Yuening Zhang
- SJTU-Yale Joint Center for Biostatistics and Data Science, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Xinbo Wang
- SJTU-Yale Joint Center for Biostatistics and Data Science, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Hongyu Zhao
- Department of Biostatistics, Yale University, New Haven, CT, United States
| | - Hui Lu
- SJTU-Yale Joint Center for Biostatistics and Data Science, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
- *Correspondence: Hui Lu,
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Sarcopenia and a 5-mRNA risk module as a combined factor to predict prognosis for patients with stomach adenocarcinoma. Genomics 2021; 114:361-377. [PMID: 34933074 DOI: 10.1016/j.ygeno.2021.12.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 11/18/2021] [Accepted: 12/04/2021] [Indexed: 12/13/2022]
Abstract
BACKGROUND Sarcopenia is an important factor affecting the prognostic outcomes in adult cancer patients. Gastric cancer is considered an age-related disease and is one of the leading causes of global cancer mortality. We aimed to establish an effective age-related model at a molecular level to predict the prognosis of patients with gastric cancer. METHODS TCGA STAD (stomach adenocarcinoma) and NCBI GEO database were utilized in this study to explore the expression, clinical relevance and prognostic value of age-related mRNAs in stomach adenocarcinoma through an integrated bioinformatics analysis. WGCNA co-expression network, Univariate Cox regression analysis, LASSO regression and Multivariate Cox regression analysis were implemented to construct an age-related prognostic signature. RESULTS As a result, sarcopenia is not only an unfavorable factor for OS (overall survival) in patients with tumor of gastric (HR: 1.707, 95%CI: 1.437-2.026), but also increases the risk of postoperative complications in patients with gastric cancer (OR: 2.904, 95%CI: 2.150-3.922). A panel of 5 mRNAs (DCBLD1, DLC1, IGFBP1, RNASE1 and SPC24) were identified to dichotomize patients with significantly different OS and independently predicted the OS in TCGA STAD (HR = 3.044, 95%CI = 2.078-4.460, P < 0.001). CONCLUSION The study provided novel insights to understand STAD at a molecular level and indicated that the 5 mRNAs might act as independent promising prognosis biomarkers for STAD. Sarcopenia and the 5-mRNA risk module as a combined factor to predict prognosis may play an important role in clinical diagnosis.
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Pan Y, Meng Y, Zhai Z, Xiong S. Identification of a three-gene-based prognostic model in multiple myeloma using bioinformatics analysis. PeerJ 2021; 9:e11320. [PMID: 34249481 PMCID: PMC8247704 DOI: 10.7717/peerj.11320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Accepted: 03/31/2021] [Indexed: 12/05/2022] Open
Abstract
Background Multiple myeloma (MM), the second most hematological malignancy, has high incidence and remains incurable till now. The pathogenesis of MM is poorly understood. This study aimed to identify novel prognostic model for MM on gene expression profiles. Methods Gene expression datas of MM (GSE6477, GSE136337) were downloaded from Gene Expression Omnibus (GEO) database. The differentially expressed genes (DEGs) in GSE6477 between case samples and normal control samples were screened by the limma package. Meanwhile, enrichment analysis was conducted, and a protein-protein interaction (PPI) network of these DEGs was established by STRING and cytoscape software. Co-expression modules of genes were built by Weighted Correlation Network Analysis (WGCNA). Key genes were identified both from hub genes and the DEGs. Univariate and multivariate Cox congression were performed to screen independent prognostic genes to construct a predictive model. The predictive power of the model was evaluated by Kaplan–Meier curve and time-dependent receiver operating characteristic (ROC) curves. Finally, univariate and multivariate Cox regression analyse were used to investigate whether the prognostic model could be independent of other clinical parameters. Results GSE6477, including 101 case and 15 normal control, were screened as the datasets. A total of 178 DEGs were identified, including 59 up-regulated and 119 down-regulated genes. In WGCNA analysis, module black and module purple were the most relevant modules with cancer traits, and 92 hub genes in these two modules were selected for further analysis. Next, 47 genes were chosen both from the DEGs and hub genes as key genes. Three genes (LYVE1, RNASE1, and RNASE2) were finally screened by univariate and multivariate Cox regression analyses and used to construct a risk model. In addition, the three-gene prognostic model revealed independent and accurate prognostic capacity in relation to other clinical parameters for MM patients. Conclusion In summary, we identified and constructed a three-gene-based prognostic model that could be used to predict overall survival of MM patients.
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Affiliation(s)
- Ying Pan
- Department of Hematology, The Second Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Ye Meng
- Department of Hematology, The Second Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Zhimin Zhai
- Department of Hematology, The Second Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Shudao Xiong
- Department of Hematology, The Second Affiliated Hospital of Anhui Medical University, Hefei, China
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Lian B, Li H, Liu Y, Chai D, Gao Y, Zhang Y, Zhou J, Li J. Expression and promoter methylation status of OPCML and its functions in the inhibition of cell proliferation, migration, and invasion in breast cancer. Breast Cancer 2020; 28:448-458. [PMID: 33108608 DOI: 10.1007/s12282-020-01179-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Accepted: 10/16/2020] [Indexed: 12/15/2022]
Abstract
BACKGROUND Opioid binding protein/cell adhesion molecule-like (OPCML) has been demonstrated to be a tumor suppressor gene, as it has been shown in previous studies to play a tumor-suppressive role in a variety of cancers. However, the role of OPCML in breast tumorigenesis remains unclear. METHODS In this study, we analyzed OPCML expression in breast cancers and adjacent non-tumor tissue samples and examined its molecular function in the breast cancer-derived cell lines MDA-MB-231 and MCF7. RESULTS We found that OPCML was downregulated in most breast cancer samples but that this protein was expressed in most adjacent non-tumor samples. The loss or downregulation of OPCML is associated with hypermethylation of its promoter. Methylation of the OPCML promoter was detected in all breast cancer cell lines and primary tumors but was not detected in surgical margin tissues and normal breast tissues. Furthermore, functional assays showed that ectopic OPCML expression could inhibit breast tumor cell proliferation in vivo and in vitro and further suppresses tumor cell migration and invasion. CONCLUSION Our results show that OPCML exerts its tumor-suppressive functions in human breast cancer cells. Moreover, the promoter-specific hypermethylation of OPCML plays an important role in human breast cancer development.
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Affiliation(s)
- Bin Lian
- Department of Oncology Surgery, General Hospital of Ningxia Medical University, Yinchuan, 750004, Ningxia, China
| | - Hong Li
- Department of Oncology Surgery, General Hospital of Ningxia Medical University, Yinchuan, 750004, Ningxia, China
| | - Yaobang Liu
- Department of Oncology Surgery, General Hospital of Ningxia Medical University, Yinchuan, 750004, Ningxia, China
| | - Dahai Chai
- Department of Oncology Surgery, General Hospital of Ningxia Medical University, Yinchuan, 750004, Ningxia, China
| | - Yali Gao
- Ningxia Medical University, Yinchuan, 750004, Ningxia, China
| | - Yangyang Zhang
- Ningxia Medical University, Yinchuan, 750004, Ningxia, China
| | - Jia Zhou
- Ningxia Medical University, Yinchuan, 750004, Ningxia, China
| | - Jinping Li
- Department of Oncology Surgery, General Hospital of Ningxia Medical University, Yinchuan, 750004, Ningxia, China.
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Development and validation of a six-RNA binding proteins prognostic signature and candidate drugs for prostate cancer. Genomics 2020; 112:4980-4992. [PMID: 32882325 DOI: 10.1016/j.ygeno.2020.08.034] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 08/09/2020] [Accepted: 08/27/2020] [Indexed: 02/07/2023]
Abstract
The dysregulation of RNA binding proteins (RBPs) regulates the progression of several cancers. However, information on the overall functions of RBPs in prostate cancer (PCa) remains largely understudied. Therefore, based on the TCGA dataset, this study identified 144 differentially expressed RBPs in tumors compared to normal tissues. Subsequently, through univariate, LASSO and multivariate Cox regression analysis, 6 RBP genes among them, MSI1, MBNL2, LENG9, REXO2, RNASE1, and PABPC1L were screened as prognostic hub genes and prognostic signature was further identified. Further analysis indicated that the high-risk group was significantly associated with poor RFS, which was validated in the MSKCC cohort. Besides, patients in the high-risk group were closely associated with dysregulation of DNA damage repair pathway, copy number alteration, tumor burden mutation, and low-response to cisplatin (P < 0.001), and bicalutamide (P < 0.001). Using the Connectivity Map, we finally predicted 3 drugs including, ribavirin, carmustine, and carbenoxolone. In summary, we identified six-RBP gene signature and 3 potential drugs against PCa, which might promote the individualized treatment strategies and further improve the quality of life among PCa patients.
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7
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Eggeling F, Hoffmann F. Microdissection—An Essential Prerequisite for Spatial Cancer Omics. Proteomics 2020; 20:e2000077. [DOI: 10.1002/pmic.202000077] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 06/12/2020] [Indexed: 12/12/2022]
Affiliation(s)
- Ferdinand Eggeling
- Department of OtorhinolaryngologyMALDI Imaging and Core Unit Proteome AnalysisDFG Core Unit Jena Biophotonic and Imaging Laboratory (JBIL)Jena University Hospital Am Klinikum 1 Jena 07747 Germany
| | - Franziska Hoffmann
- Department of OtorhinolaryngologyMALDI Imaging and Core Unit Proteome AnalysisDFG Core Unit Jena Biophotonic and Imaging Laboratory (JBIL)Jena University Hospital Am Klinikum 1 Jena 07747 Germany
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Jiang L, Tolani B, Yeh CC, Fan Y, Reza JA, Horvai AE, Xia E, Kratz JR, Jablons DM, Mann MJ. Differential gene expression identifies KRT7 and MUC1 as potential metastasis-specific targets in sarcoma. Cancer Manag Res 2019; 11:8209-8218. [PMID: 31686913 PMCID: PMC6751227 DOI: 10.2147/cmar.s218676] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Accepted: 08/07/2019] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Despite numerous discoveries regarding the molecular genesis and progression of primary cancers, the biology of metastasis remains poorly understood. Compared to very large numbers of circulating tumor cells that are now known to accompany nearly all cancers, a relatively limited number of lesions actually develop in most patients with metastases. We hypothesized that phenotypic changes driven by differential gene expression in a finite subpopulation of tumor cells render those cells capable of metastasis and sought to identify key pathways through analysis of gene expression in primary and metastatic lesions from the same patients. METHODS We compared whole-genome expression in 4 matched samples of primary and metastatic sarcoma, then evaluated candidate genes with differential expression via quantitative PCR in 30 additional matched sets, tumor tissue immunostaining, siRNA loss-of-function in a sarcoma cell migration assay, and clinical correlation with overall and disease-free survival after metastasectomy. RESULTS Comparison of microarray signals identified differential expression of cell adhesion genes, including upregulation of KRT7 and MUC1 in metastases; KRT7 and MUC1 upregulation was confirmed in 22 (73%) and 20 (67%) matched sets of metastatic/primary tumors, respectively. Silencing of KRT7 and MUC1 via targeted siRNAs suppressed sarcoma cell migration in vitro, and a significant correlation (two-sided) was observed between both KRT7 and MUC1 expression in metastases and overall patient survival. CONCLUSION KRT7 and MUC1 may play a significant role in enabling sarcoma metastasis, and they may therefore be important prognostic biomarkers as well as potential targets for therapeutic prevention of metastasis.
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Affiliation(s)
- Long Jiang
- Thoracic Oncology Program, Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA 94115, USA
| | - Bhairavi Tolani
- Thoracic Oncology Program, Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA 94115, USA
| | - Che-Chung Yeh
- Thoracic Oncology Program, Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA 94115, USA
| | - Yanying Fan
- Thoracic Oncology Program, Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA 94115, USA
| | - Joseph A Reza
- Thoracic Oncology Program, Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA 94115, USA
| | - Andrew E Horvai
- Department of Pathology, University of California, San Francisco, San Francisco, CA, USA
| | - Endi Xia
- Thoracic Oncology Program, Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA 94115, USA
| | - Johannes R Kratz
- Thoracic Oncology Program, Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA 94115, USA
| | - David M Jablons
- Thoracic Oncology Program, Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA 94115, USA
| | - Michael J Mann
- Thoracic Oncology Program, Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA 94115, USA
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Cao W, Zhou D, Tang W, An H, Zhang Y. Discovery of plasma messenger RNA as novel biomarker for gastric cancer identified through bioinformatics analysis and clinical validation. PeerJ 2019; 7:e7025. [PMID: 31249732 PMCID: PMC6587939 DOI: 10.7717/peerj.7025] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Accepted: 04/24/2019] [Indexed: 12/16/2022] Open
Abstract
Background Gastric cancer (GC) is the third leading cause of cancer-related death worldwide, partially due to the lack of effective screening strategies. Thus, there is a stringent need for non-invasive biomarkers to improve patient diagnostic efficiency in GC. Methods This study initially filtered messenger RNAs (mRNAs) as prospective biomarkers through bioinformatics analysis. Clinical validation was conducted using circulating mRNA in plasma from patients with GC. Relationships between expression levels of target genes and clinicopathological characteristics were calculated. Then, associations of these selected biomarkers with overall survival (OS) were analyzed using the Kaplan-Meier plotter online tool. Results Based on a comprehensive analysis of transcriptional expression profiles across 5 microarrays, top 3 over- and underexpressed mRNAs in GC were generated. Compared with normal controls, expression levels of collagen type VI alpha 3 chain (COL6A3), serpin family H member 1 (SERPINH1) and pleckstrin homology and RhoGEF domain containing G1 (PLEKHG1) were significantly upregulated in GC plasmas. Receiver-operating characteristic (ROC) curves on the diagnostic efficacy of plasma COL6A3, SERPINH1 and PLEKHG1 mRNAs in GC showed that the area under the ROC (AUC) was 0.720, 0.698 and 0.833, respectively. Combined, these three biomarkers showed an elevated AUC of 0.907. Interestingly, the higher COL6A3 level was significantly correlated with lymph node metastasis and poor prognosis in GC patients. High level of SERPINH1 mRNA expression was correlated with advanced age, poor differentiation, lower OS, and PLEKHG1 was also associated with poor OS in GC patients. Conclusion Our results suggested that circulating COL6A3, SERPINH1 and PLEKHG1 mRNAs could be putative noninvasive biomarkers for GC diagnosis and prognosis.
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Affiliation(s)
- Wei Cao
- Department of Medical Oncology, Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, Fujian, China.,Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, China.,Department of Translational Medicine, Xiamen Institute of Rare Earth Materials, Chinese Academy of Sciences, Xiamen, China
| | - Dan Zhou
- Department of Medical Oncology, Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, Fujian, China.,Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, China.,Department of Translational Medicine, Xiamen Institute of Rare Earth Materials, Chinese Academy of Sciences, Xiamen, China
| | - Weiwei Tang
- Department of Medical Oncology, Cancer Hospital, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Teaching Hospital of Fujian Medical University, Xiamen, Fujian, China
| | - Hanxiang An
- Department of Medical Oncology, Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, Fujian, China
| | - Yun Zhang
- Department of Medical Oncology, Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, Fujian, China.,Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, China.,Department of Translational Medicine, Xiamen Institute of Rare Earth Materials, Chinese Academy of Sciences, Xiamen, China
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Zhang X, Yin X, Zhang H, Sun G, Yang Y, Chen J, Zhu X, Zhao P, Zhao J, Liu J, Chen N, Wang J, Shen P, Zeng H. Differential expressions of PD-1, PD-L1 and PD-L2 between primary and metastatic sites in renal cell carcinoma. BMC Cancer 2019; 19:360. [PMID: 30992011 PMCID: PMC6469103 DOI: 10.1186/s12885-019-5578-4] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Accepted: 04/04/2019] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND In clinical practice, the detection of biomarkers is mostly based on primary tumors for its convenience in acquisition. However, immune checkpoints may express differently between primary and metastatic tumor. Therefore, we aimed to compare the differential expressions of PD-1, PD-L1 and PD-L2 between the primary and metastatic sites of renal cell carcinoma (RCC). METHODS Patients diagnosed with RCC by resection or fine needle aspiration of metastasis were included. Immunohistochemistry (IHC) was applied to detect PD-1, PD-L1 and PD-L2 expressions. SPSS 22.0 was applied to conduct Chi-square, consistency tests and Cox's proportional hazards regression models. GraphPad Prism 6 was used to plot survival curves and R software was used to calculate Predictive accuracy (PA). RESULTS In the whole cohort (N = 163), IHC results suggested a higher detection rate of PD-L1 in the metastasis than that of the primary site (χ2 = 4.66, p = 0.03), with a low consistent rate of 32.5%. Among different metastatic tumors, PD-1 was highly expressed in the lung/lymph node (65.3%) and poorly expressed in the brain (10.5%) and visceral metastases (12.5%). PD-L1 was highly expressed in lung/lymph node (37.5%) and the bone metastases (12.2%) on the contrary. In terms of survival analysis, patients with PD-1 expression either in the primary or metastasis had a shorter overall survival (OS) (HR: 1.59, 95% CI 1.08-2.36, p = 0.02). Also, PD-L1 expression in the primary was associated with a shorter OS (HR 2.55, 95% CI 1.06-6.15, p = 0.04). In the multivariate analysis, the predictive accuracy of the whole model for PFS was increased from 0.683 to 0.699 after adding PD-1. CONCLUSION PD-1, PD-L1 and PD-L2 were differentially expressed between primary and metastatic tumors. Histopathological examination of these immune check points in metastatic lesions of mRCC should be noticed, and its accurate diagnosis may be one of the effective ways to realize the individualized treatment.
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Affiliation(s)
- Xingming Zhang
- Department of Urology, West China Hospital, Sichuan University, Chengdu, People's Republic of China, 610041.,Institute of Urology, West China Hospital, Sichuan University, Chengdu, People's Republic of China, 610041
| | - Xiaoxue Yin
- Department of Pathology, West China Hospital, Sichuan University, Chengdu, People's Republic of China, 610041
| | - Haoran Zhang
- Department of Urology, West China Hospital, Sichuan University, Chengdu, People's Republic of China, 610041.,Institute of Urology, West China Hospital, Sichuan University, Chengdu, People's Republic of China, 610041
| | - Guangxi Sun
- Department of Urology, West China Hospital, Sichuan University, Chengdu, People's Republic of China, 610041.,Institute of Urology, West China Hospital, Sichuan University, Chengdu, People's Republic of China, 610041
| | - Yaojing Yang
- Department of Urology, West China Hospital, Sichuan University, Chengdu, People's Republic of China, 610041.,Institute of Urology, West China Hospital, Sichuan University, Chengdu, People's Republic of China, 610041
| | - Junru Chen
- Department of Urology, West China Hospital, Sichuan University, Chengdu, People's Republic of China, 610041.,Institute of Urology, West China Hospital, Sichuan University, Chengdu, People's Republic of China, 610041
| | - Xudong Zhu
- Department of Urology, West China Hospital, Sichuan University, Chengdu, People's Republic of China, 610041.,Institute of Urology, West China Hospital, Sichuan University, Chengdu, People's Republic of China, 610041
| | - Peng Zhao
- Department of Urology, West China Hospital, Sichuan University, Chengdu, People's Republic of China, 610041.,Institute of Urology, West China Hospital, Sichuan University, Chengdu, People's Republic of China, 610041
| | - Jinge Zhao
- Department of Urology, West China Hospital, Sichuan University, Chengdu, People's Republic of China, 610041.,Institute of Urology, West China Hospital, Sichuan University, Chengdu, People's Republic of China, 610041
| | - Jiandong Liu
- Department of Urology, West China Hospital, Sichuan University, Chengdu, People's Republic of China, 610041.,Institute of Urology, West China Hospital, Sichuan University, Chengdu, People's Republic of China, 610041
| | - Ni Chen
- Department of Pathology, West China Hospital, Sichuan University, Chengdu, People's Republic of China, 610041
| | - Jia Wang
- Department of Urology, West China Hospital, Sichuan University, Chengdu, People's Republic of China, 610041.,Institute of Urology, West China Hospital, Sichuan University, Chengdu, People's Republic of China, 610041
| | - Pengfei Shen
- Department of Urology, West China Hospital, Sichuan University, Chengdu, People's Republic of China, 610041. .,Institute of Urology, West China Hospital, Sichuan University, Chengdu, People's Republic of China, 610041. .,Department of Urology, Institute of Urology, West China Hospital, Sichuan University, No. 37 Guoxue Xiang, Chengdu, Sichuan, People's Republic of China, 610041.
| | - Hao Zeng
- Department of Urology, West China Hospital, Sichuan University, Chengdu, People's Republic of China, 610041. .,Institute of Urology, West China Hospital, Sichuan University, Chengdu, People's Republic of China, 610041. .,Department of Urology, Institute of Urology, West China Hospital, Sichuan University, No. 37 Guoxue Xiang, Chengdu, Sichuan, People's Republic of China, 610041.
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11
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OPCML is hypermethylated in a subset of patients with metaplastic changes in their esophagus. Biomark Res 2018; 6:35. [PMID: 30555700 PMCID: PMC6286609 DOI: 10.1186/s40364-018-0150-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Accepted: 11/28/2018] [Indexed: 12/17/2022] Open
Abstract
OPCML hypermethylation is considered a promising cancer biomarker. We examined methylation levels in the first exon of OPCML in two patient cohorts within the esophageal adenocarcinoma and gastric adenocarcinoma cascades and in a range of cell-lines using a custom PyroMark CpG assay. Methylation levels were significantly higher in esophageal tissue with histologically confirmed glandular mucosa as compared to tissue from normal esophagi or gastro-esophageal reflux disease. Higher levels of OPCML methylation were absent in the adjacent normal esophageal tissue of patients with glandular mucosa. Higher levels of methylation were confirmed in cell-lines derived from patients with adenocarcinoma, but also detected in two cell-lines with signs of dysplasia. We validated our assay by showing no differences in methylation levels in DNA extracted from blood of patients within the gastric adenocarcinoma cascade. OPCML hypermethylation is present in a subset of patients with metaplastic changes in their esophagus.
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12
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Fattahi S, Golpour M, Amjadi-Moheb F, Sharifi-Pasandi M, Khodadadi P, Pilehchian-Langroudi M, Ashrafi GH, Akhavan-Niaki H. DNA methyltransferases and gastric cancer: insight into targeted therapy. Epigenomics 2018; 10:1477-1497. [PMID: 30325215 DOI: 10.2217/epi-2018-0096] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Gastric cancer is a major health problem worldwide occupying most frequent causes of cancer-related mortality. In addition to genetic modifications, epigenetic alterations catalyzed by DNA methyltransferases (DNMTs) are a well-characterized epigenetic hallmark in gastric cancer. The reversible nature of epigenetic alterations and central role of DNA methylation in diverse biological processes provides an opportunity for using DNMT inhibitors to enhance the efficacy of chemotherapeutics. In this review, we discussed key factors or mechanisms such as SNPs, infections and genetic modifications that trigger DNMTs level modification in gastric cancer, and their potential roles in cancer progression. Finally, we focused on how inhibitors of the DNMTs can most effectively be used for the treatment of gastric cancer with multidrug resistance.
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Affiliation(s)
- Sadegh Fattahi
- Cellular & Molecular Biology Research Center, Health Research Institute, Babol University of Medical Sciences, 4717647745, Babol, Iran.,North Research Center, Pasteur Institute, Amol, 4615885399, Iran
| | - Monireh Golpour
- Molecular & Cell Biology Research Center, Student Research Committee, Faculty of Medicine, Mazandaran University of Medical Science, Sari, 4817844718, Iran
| | - Fatemeh Amjadi-Moheb
- Department of Genetics, Faculty of Medicine, Babol University of Medical Sciences, 4717647745, Babol, Iran
| | - Marzieh Sharifi-Pasandi
- Molecular & Cell Biology Research Center, Student Research Committee, Faculty of Medicine, Mazandaran University of Medical Science, Sari, 4817844718, Iran
| | - Parastesh Khodadadi
- Department of Genetics, Faculty of Medicine, Babol University of Medical Sciences, 4717647745, Babol, Iran
| | | | - Gholam Hossein Ashrafi
- School of Life Science, Pharmacy & Chemistry, SEC Faculty, Cancer Theme, Kingston University London, Kingston upon Thames, London KT1 2EE, UK
| | - Haleh Akhavan-Niaki
- Department of Genetics, Faculty of Medicine, Babol University of Medical Sciences, 4717647745, Babol, Iran
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13
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Jenkins C, Luty SB, Maxson JE, Eide CA, Abel ML, Togiai C, Nemecek ER, Bottomly D, McWeeney SK, Wilmot B, Loriaux M, Chang BH, Tyner JW. Synthetic lethality of TNK2 inhibition in PTPN11-mutant leukemia. Sci Signal 2018; 11:eaao5617. [PMID: 30018082 PMCID: PMC6168748 DOI: 10.1126/scisignal.aao5617] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The protein tyrosine phosphatase PTPN11 is implicated in the pathogenesis of juvenile myelomonocytic leukemia (JMML), acute myeloid leukemia (AML), and other malignancies. Activating mutations in PTPN11 increase downstream proliferative signaling and cell survival. We investigated the signaling upstream of PTPN11 in JMML and AML cells and found that PTPN11 was activated by the nonreceptor tyrosine/serine/threonine kinase TNK2 and that PTPN11-mutant JMML and AML cells were sensitive to TNK2 inhibition. In cultured human cell-based assays, PTPN11 and TNK2 interacted directly, enabling TNK2 to phosphorylate PTPN11, which subsequently dephosphorylated TNK2 in a negative feedback loop. Mutations in PTPN11 did not affect this physical interaction but increased the basal activity of PTPN11 such that TNK2-mediated activation was additive. Consequently, coexpression of TNK2 and mutant PTPN11 synergistically increased mitogen-activated protein kinase (MAPK) signaling and enhanced colony formation in bone marrow cells from mice. Chemical inhibition of TNK2 blocked MAPK signaling and colony formation in vitro and decreased disease burden in a patient with PTPN11-mutant JMML who was treated with the multikinase (including TNK2) inhibitor dasatinib. Together, these data suggest that TNK2 is a promising therapeutic target for PTPN11-mutant leukemias.
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MESH Headings
- Animals
- Child
- Dasatinib/pharmacology
- Humans
- Leukemia, Myeloid, Acute/drug therapy
- Leukemia, Myeloid, Acute/enzymology
- Leukemia, Myeloid, Acute/genetics
- Leukemia, Myeloid, Acute/pathology
- Leukemia, Myelomonocytic, Juvenile/drug therapy
- Leukemia, Myelomonocytic, Juvenile/enzymology
- Leukemia, Myelomonocytic, Juvenile/genetics
- Leukemia, Myelomonocytic, Juvenile/pathology
- Male
- Mice
- Prognosis
- Protein Kinase Inhibitors/pharmacology
- Protein Tyrosine Phosphatase, Non-Receptor Type 11/genetics
- Protein-Tyrosine Kinases/antagonists & inhibitors
- Signal Transduction
- Survival Rate
- Synthetic Lethal Mutations
- Tumor Stem Cell Assay
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Affiliation(s)
- Chelsea Jenkins
- Department of Cell, Developmental and Cancer Biology, Oregon Health & Science University, Portland, OR 97239, USA
- Knight Cancer Institute, Oregon Health & Science University, Portland, OR 97239, USA
| | - Samuel B Luty
- Department of Cell, Developmental and Cancer Biology, Oregon Health & Science University, Portland, OR 97239, USA
- Knight Cancer Institute, Oregon Health & Science University, Portland, OR 97239, USA
| | - Julia E Maxson
- Knight Cancer Institute, Oregon Health & Science University, Portland, OR 97239, USA
- Division of Hematology and Medical Oncology, Oregon Health & Science University, Portland, OR 97239, USA
| | - Christopher A Eide
- Knight Cancer Institute, Oregon Health & Science University, Portland, OR 97239, USA
| | - Melissa L Abel
- Department of Cell, Developmental and Cancer Biology, Oregon Health & Science University, Portland, OR 97239, USA
- Knight Cancer Institute, Oregon Health & Science University, Portland, OR 97239, USA
| | - Corinne Togiai
- Department of Cell, Developmental and Cancer Biology, Oregon Health & Science University, Portland, OR 97239, USA
- Knight Cancer Institute, Oregon Health & Science University, Portland, OR 97239, USA
| | - Eneida R Nemecek
- Knight Cancer Institute, Oregon Health & Science University, Portland, OR 97239, USA
- Department of Pediatrics, Oregon Health & Science University, Portland, OR 97239, USA
| | - Daniel Bottomly
- Oregon Clinical and Translational Research Institute, Portland, OR 97239, USA
- Division of Bioinformatics and Computational Biology, Department of Medical Informatics and Clinical Epidemiology, Oregon Health & Science University, Portland, OR 97239, USA
| | - Shannon K McWeeney
- Knight Cancer Institute, Oregon Health & Science University, Portland, OR 97239, USA
- Oregon Clinical and Translational Research Institute, Portland, OR 97239, USA
- Division of Bioinformatics and Computational Biology, Department of Medical Informatics and Clinical Epidemiology, Oregon Health & Science University, Portland, OR 97239, USA
| | - Beth Wilmot
- Knight Cancer Institute, Oregon Health & Science University, Portland, OR 97239, USA
- Oregon Clinical and Translational Research Institute, Portland, OR 97239, USA
- Division of Bioinformatics and Computational Biology, Department of Medical Informatics and Clinical Epidemiology, Oregon Health & Science University, Portland, OR 97239, USA
| | - Marc Loriaux
- Knight Cancer Institute, Oregon Health & Science University, Portland, OR 97239, USA
- Department of Pathology, Oregon Health & Science University, Portland, OR 97239, USA
| | - Bill H Chang
- Knight Cancer Institute, Oregon Health & Science University, Portland, OR 97239, USA.
- Department of Pediatrics, Oregon Health & Science University, Portland, OR 97239, USA
| | - Jeffrey W Tyner
- Department of Cell, Developmental and Cancer Biology, Oregon Health & Science University, Portland, OR 97239, USA.
- Knight Cancer Institute, Oregon Health & Science University, Portland, OR 97239, USA
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14
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Zhang N, Xu J, Wang Y, Heng X, Yang L, Xing X. Loss of opioid binding protein/cell adhesion molecule-like gene expression in gastric cancer. Oncol Lett 2018; 15:9973-9977. [PMID: 29805691 DOI: 10.3892/ol.2018.8562] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2016] [Accepted: 05/17/2017] [Indexed: 12/11/2022] Open
Abstract
Previous studies have reported that the expression of the opioid binding protein/cell adhesion molecule-like (OPCML) gene was frequently downregulated in various of types of cancer. However, little is known regarding the expression of the OPCML gene in gastric cancer. The present study identified that OPCML was downregulated in the gastric cancer SGC7901, KATO III, MKN45, MKN74, SNU1, AGS, N87 and a gastric mucosa cell line GES1, compared with normal gastric tissues by reverse transcription-quantitative polymerase chain reaction (RT-qPCR). To investigate whether the downregulation of OPCML was due to promoter hypermethylation, the methylation of the OPCML promoter was assessed by methylation-specific polymerase chain reaction. Hypermethylation of the OPCML promoter was observed in the gastric cancer MKN45 cell lines, but was not as evident in normal gastric tissue. The methylation inhibitor 5-aza-2'-deoxycytidine was used to remove the methylation of the OPCML gene promoter, following which the expression of OPCML was restored. In addition, the function of the OPCML gene was studied in vitro, and it was found that the restoration expression of OPCML could lead to the suppression of cell growth. In conclusion, the present study has shown that OPCML, which acts as a tumor suppressor, was silenced in gastric cancer cell lines via aberrant hypermethylation of the promoter CpG islands, which may provide a novel molecular approach for the early diagnosis of gastric cancer.
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Affiliation(s)
- Ning Zhang
- Department of Respiratory Disease, Affiliated LuoHu Hospital of Shenzhen University, Shenzhen, Guangdong 518001, P.R. China
| | - Jide Xu
- Department of Physiology, Guangzhou Medical University, Guangzhou, Guangdong 510000, P.R. China
| | - Yuhong Wang
- Department of Endoscopy, Sun Yat-sen University Cancer Center, Guangzhou, Guangdong 510000, P.R. China
| | - Xuhua Heng
- Department of Cardiogy, Affiliated Hospital of Panzhihua University, Panzhihua, Sichuan 617000, P.R. China
| | - Liteng Yang
- Department of Respiratory Disease, Affiliated LuoHu Hospital of Shenzhen University, Shenzhen, Guangdong 518001, P.R. China
| | - Xiangbin Xing
- Department of Gastroenterology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510000, P.R. China
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15
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Zanini E, Louis LS, Antony J, Karali E, Okon IS, McKie AB, Vaughan S, El-Bahrawy M, Stebbing J, Recchi C, Gabra H. The Tumor-Suppressor Protein OPCML Potentiates Anti-EGFR- and Anti-HER2-Targeted Therapy in HER2-Positive Ovarian and Breast Cancer. Mol Cancer Ther 2017; 16:2246-2256. [PMID: 28775148 DOI: 10.1158/1535-7163.mct-17-0081] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Revised: 05/22/2017] [Accepted: 07/14/2017] [Indexed: 11/16/2022]
Abstract
Opioid-binding protein/cell adhesion molecule-like (OPCML) is a tumor-suppressor gene that is frequently inactivated in ovarian cancer and many other cancers by somatic methylation. We have previously shown that OPCML exerts its suppressor function by negatively regulating a spectrum of receptor tyrosine kinases (RTK), such as ErbB2/HER2, FGFR1, and EphA2, thus attenuating their related downstream signaling. The physical interaction of OPCML with this defined group of RTKs is a prerequisite for their downregulation. Overexpression/gene amplification of EGFR and HER2 is a frequent event in multiple cancers, including ovarian and breast cancers. Molecular therapeutics against EGFR/HER2 or EGFR only, such as lapatinib and erlotinib, respectively, were developed to target these receptors, but resistance often occurs in relapsing cancers. Here we show that, though OPCML interacts only with HER2 and not with EGFR, the interaction of OPCML with HER2 disrupts the formation of the HER2-EGFR heterodimer, and this translates into a better response to both lapatinib and erlotinib in HER2-expressing ovarian and breast cancer cell lines. Also, we show that high OPCML expression is associated with better response to lapatinib therapy in breast cancer patients and better survival in HER2-overexpressing ovarian cancer patients, suggesting that OPCML co-therapy could be a valuable sensitizing approach to RTK inhibitors. Mol Cancer Ther; 16(10); 2246-56. ©2017 AACR.
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Affiliation(s)
- Elisa Zanini
- Ovarian Cancer Action Research Centre, Department of Surgery and Cancer, Imperial College London, London, United Kingdom
| | - Louay S Louis
- Ovarian Cancer Action Research Centre, Department of Surgery and Cancer, Imperial College London, London, United Kingdom
| | - Jane Antony
- Ovarian Cancer Action Research Centre, Department of Surgery and Cancer, Imperial College London, London, United Kingdom
| | - Evdoxia Karali
- Ovarian Cancer Action Research Centre, Department of Surgery and Cancer, Imperial College London, London, United Kingdom
| | - Imoh S Okon
- Ovarian Cancer Action Research Centre, Department of Surgery and Cancer, Imperial College London, London, United Kingdom
- Center for Molecular and Translational Medicine, Georgia State University, Atlanta, Georgia
| | - Arthur B McKie
- Ovarian Cancer Action Research Centre, Department of Surgery and Cancer, Imperial College London, London, United Kingdom
- Department of Medical Genetics, University of Cambridge, Addenbrooke's Treatment Centre, Cambridge Biomedical Campus, Cambridge, United Kingdom
| | - Sebastian Vaughan
- Ovarian Cancer Action Research Centre, Department of Surgery and Cancer, Imperial College London, London, United Kingdom
| | - Mona El-Bahrawy
- Department of Histopathology, Imperial College London, London, United Kingdom
| | - Justin Stebbing
- Department of Surgery and Cancer, Imperial College London, London, United Kingdom
| | - Chiara Recchi
- Ovarian Cancer Action Research Centre, Department of Surgery and Cancer, Imperial College London, London, United Kingdom.
| | - Hani Gabra
- Ovarian Cancer Action Research Centre, Department of Surgery and Cancer, Imperial College London, London, United Kingdom.
- Clinical Discovery Unit, Early Clinical Development, AstraZeneca, Cambridge, United Kingdom
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16
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Fang Z, Yin S, Sun R, Zhang S, Fu M, Wu Y, Zhang T, Khaliq J, Li Y. miR-140-5p suppresses the proliferation, migration and invasion of gastric cancer by regulating YES1. Mol Cancer 2017; 16:139. [PMID: 28818100 PMCID: PMC5561618 DOI: 10.1186/s12943-017-0708-6] [Citation(s) in RCA: 113] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Accepted: 08/07/2017] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND The aberrant expression of microRNA-140-5p (miR-140-5p) has been described in gastric cancer (GC). However, the role of miR-140-5p in GC remains unclear. In this study, the prognostic relevance of miR-140-5p in GC was investigated and YES1 was identified as a novel target of miR-140-5p in regulating tumor progression. METHODS miR-140-5p level was determined in 20 paired frozen specimens through quantitative real-time PCR, and analyzed in tissue microarrays through in situ hybridization. The target of miR-140-5p was verified through a dual luciferase reporter assay, and the effects of miR-140-5p on phenotypic changes in GC cells were investigated in vitro and in vivo. RESULTS Compared with that in adjacent normal tissues, miR-140-5p expression decreased in cancerous tissues. The downregulated miR-140-5p in 144 patients with GC was significantly correlated with the reduced overall survival of these patients. miR-140-5p could inhibit GC cell proliferation, migration and invasion by directly targeting 3'-untranlated region of YES1. miR-140-5p could also remarkably reduce the tumor size in GC xenograft mice. CONCLUSIONS miR-140-5p serves as a potential prognostic factor in patients with GC, and miR-140-5p mediated YES1 inhibition is a novel mechanism behind the suppressive effects of miR-140-5p in GC.
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Affiliation(s)
- Zheng Fang
- Department of General Surgery, First affiliated Hospital of Anhui Medical University, 218 Jixi Avenue, Hefei, 230022, China
| | - Shuai Yin
- Department of General, Visceral, Transplantation, Vascular and Thoracic Surgery, Hospital of University of Munich, Marchioninistr.15, 5H-02-428, 81377, Munich, Germany
| | - Ruochuan Sun
- Department of General Surgery, First affiliated Hospital of Anhui Medical University, 218 Jixi Avenue, Hefei, 230022, China
| | - Shangxin Zhang
- Department of General Surgery, First affiliated Hospital of Anhui Medical University, 218 Jixi Avenue, Hefei, 230022, China
| | - Min Fu
- Department of General Surgery, First affiliated Hospital of Anhui Medical University, 218 Jixi Avenue, Hefei, 230022, China
| | - Youliang Wu
- Department of General Surgery, First affiliated Hospital of Anhui Medical University, 218 Jixi Avenue, Hefei, 230022, China
| | - Tao Zhang
- Department of General Surgery, First affiliated Hospital of Anhui Medical University, 218 Jixi Avenue, Hefei, 230022, China
| | - Junaid Khaliq
- Department of General Surgery, First affiliated Hospital of Anhui Medical University, 218 Jixi Avenue, Hefei, 230022, China
| | - Yongxiang Li
- Department of General Surgery, First affiliated Hospital of Anhui Medical University, 218 Jixi Avenue, Hefei, 230022, China.
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17
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Xing X, Cai W, Ma S, Wang Y, Shi H, Li M, Jiao J, Yang Y, Liu L, Zhang X, Chen M. Down-regulated expression of OPCML predicts an unfavorable prognosis and promotes disease progression in human gastric cancer. BMC Cancer 2017; 17:268. [PMID: 28407749 PMCID: PMC5391589 DOI: 10.1186/s12885-017-3203-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Accepted: 03/17/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND OPCML belongs to the IgLON family of Ig domain-containing GPI-anchored cell adhesion molecules and was recently found to be involved in carcinogenesis, while its role in gastric cancer remains unclear. METHODS We assessed expression and biological behavior of OPCML in gastric cancer. RESULTS OPCML expression was markedly reduced in tumor tissues and cancer cell lines. Decreased OPCML expression had a significant association with unfavorable tumor stage (p = 0.007) and grading (p < 0.001). Furthermore, the results revealed that OPCML was an independent prognostic factor for overall survival in gastric cancer (p = 0.002). In addition, ectopic expression of OPCML in cancer cells significantly inhibited cell viability (p < 0.01) and colony formation (p < 0.001), arrest cell cycle in G0/G1 phase and induced apoptosis, and suppressed tumor formation in nude mice. The alterations of phosphorylation status of AKT and its substrate GSK3β, up-regulation of pro-apoptotic regulators including caspase-3, caspase-9 and PARP, and up-regulation of cell cycle regulator p27, were implicated in the biological activity of OPCML in cancer cells. CONCLUSION Down-regulated OPCML expression might serve as an independent predictor for unfavorable prognosis of patients, and the biological behavior supports its role as a tumor suppressor in gastric cancer.
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Affiliation(s)
- Xiangbin Xing
- Department of Gastroenterology, the First Affiliated Hospital of Sun Yat-sen University, 58 Zhongshan II Road, Guangzhou, 510080 China
| | - Weibin Cai
- Department of Biochemistry, Zhongshan Medical School, Sun Yat-sen University, Guangzhou, 510089 China
| | - Sanmei Ma
- Department of Biotechnology, Jinan University, Guangzhou, 510632 China
| | - Yongfei Wang
- Department of Biotechnology, Jinan University, Guangzhou, 510632 China
| | - Huijuan Shi
- Department of Pathology, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080 China
| | - Ming Li
- Department of Gastroenterology, the First Affiliated Hospital of Sun Yat-sen University, 58 Zhongshan II Road, Guangzhou, 510080 China
- Department of Biotechnology, Jinan University, Guangzhou, 510632 China
| | - Jinxia Jiao
- Department of Gastroenterology, the First Affiliated Hospital of Sun Yat-sen University, 58 Zhongshan II Road, Guangzhou, 510080 China
- Department of Biotechnology, Jinan University, Guangzhou, 510632 China
| | - Yang Yang
- Department of Gastroenterology, the First Affiliated Hospital of Sun Yat-sen University, 58 Zhongshan II Road, Guangzhou, 510080 China
- Department of Biotechnology, Jinan University, Guangzhou, 510632 China
| | - Longshan Liu
- Department of Laboratory of General Surgery, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080 China
| | - Xiangliang Zhang
- Department of Abdominal Surgery (Section 2), Affiliated Cancer Hospital of Guangzhou Medical University, Guangzhou, 510095 China
| | - Minhu Chen
- Department of Gastroenterology, the First Affiliated Hospital of Sun Yat-sen University, 58 Zhongshan II Road, Guangzhou, 510080 China
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18
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Maxson JE, Abel ML, Wang J, Deng X, Reckel S, Luty SB, Sun H, Gorenstein J, Hughes SB, Bottomly D, Wilmot B, McWeeney SK, Radich J, Hantschel O, Middleton RE, Gray NS, Druker BJ, Tyner JW. Identification and Characterization of Tyrosine Kinase Nonreceptor 2 Mutations in Leukemia through Integration of Kinase Inhibitor Screening and Genomic Analysis. Cancer Res 2015; 76:127-38. [PMID: 26677978 DOI: 10.1158/0008-5472.can-15-0817] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2015] [Accepted: 09/07/2015] [Indexed: 01/22/2023]
Abstract
The amount of genomic information about leukemia cells currently far exceeds our overall understanding of the precise genetic events that ultimately drive disease development and progression. Effective implementation of personalized medicine will require tools to distinguish actionable genetic alterations within the complex genetic landscape of leukemia. In this study, we performed kinase inhibitor screens to predict functional gene targets in primary specimens from patients with acute myeloid leukemia and chronic myelomonocytic leukemia. Deep sequencing of the same patient specimens identified genetic alterations that were then integrated with the functionally important targets using the HitWalker algorithm to prioritize the mutant genes that most likely explain the observed drug sensitivity patterns. Through this process, we identified tyrosine kinase nonreceptor 2 (TNK2) point mutations that exhibited oncogenic capacity. Importantly, the integration of functional and genomic data using HitWalker allowed for prioritization of rare oncogenic mutations that may have been missed through genomic analysis alone. These mutations were sensitive to the multikinase inhibitor dasatinib, which antagonizes TNK2 kinase activity, as well as novel TNK2 inhibitors, XMD8-87 and XMD16-5, with greater target specificity. We also identified activating truncation mutations in other tumor types that were sensitive to XMD8-87 and XMD16-5, exemplifying the potential utility of these compounds across tumor types dependent on TNK2. Collectively, our findings highlight a more sensitive approach for identifying actionable genomic lesions that may be infrequently mutated or overlooked and provide a new method for the prioritization of candidate genetic mutations.
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Affiliation(s)
- Julia E Maxson
- Knight Cancer Institute, Oregon Health and Science University, Portland, Oregon. Division of Hematology and Medical Oncology, Oregon Health and Science University, Portland, Oregon. Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Melissa L Abel
- Knight Cancer Institute, Oregon Health and Science University, Portland, Oregon. Division of Hematology and Medical Oncology, Oregon Health and Science University, Portland, Oregon
| | - Jinhua Wang
- Department of Cancer Biology, Dana Farber Cancer Institute, Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, Massachusetts
| | - Xianming Deng
- Department of Cancer Biology, Dana Farber Cancer Institute, Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, Massachusetts
| | - Sina Reckel
- Swiss Institute for Experimental Cancer Research (ISREC), School of Life Sciences, École polytechnique fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Samuel B Luty
- Knight Cancer Institute, Oregon Health and Science University, Portland, Oregon. Division of Hematology and Medical Oncology, Oregon Health and Science University, Portland, Oregon
| | - Huahang Sun
- Belfer Institute for Applied Cancer Science, Dana Farber Cancer Institute, Boston, Massachusetts
| | - Julie Gorenstein
- Belfer Institute for Applied Cancer Science, Dana Farber Cancer Institute, Boston, Massachusetts
| | - Seamus B Hughes
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Daniel Bottomly
- Knight Cancer Institute, Oregon Health and Science University, Portland, Oregon. Oregon Clinical and Translational Research Institute, Oregon Health and Science University, Portland, Oregon
| | - Beth Wilmot
- Knight Cancer Institute, Oregon Health and Science University, Portland, Oregon. Oregon Clinical and Translational Research Institute, Oregon Health and Science University, Portland, Oregon. Division of Bioinformatics and Computational Biology, Oregon Health and Science University, Portland, Oregon
| | - Shannon K McWeeney
- Knight Cancer Institute, Oregon Health and Science University, Portland, Oregon. Oregon Clinical and Translational Research Institute, Oregon Health and Science University, Portland, Oregon. Division of Bioinformatics and Computational Biology, Oregon Health and Science University, Portland, Oregon
| | - Jerald Radich
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Oliver Hantschel
- Swiss Institute for Experimental Cancer Research (ISREC), School of Life Sciences, École polytechnique fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Richard E Middleton
- Belfer Institute for Applied Cancer Science, Dana Farber Cancer Institute, Boston, Massachusetts
| | - Nathanael S Gray
- Department of Cancer Biology, Dana Farber Cancer Institute, Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, Massachusetts
| | - Brian J Druker
- Knight Cancer Institute, Oregon Health and Science University, Portland, Oregon. Division of Hematology and Medical Oncology, Oregon Health and Science University, Portland, Oregon. Howard Hughes Medical Institute, Portland, Oregon
| | - Jeffrey W Tyner
- Division of Hematology and Medical Oncology, Oregon Health and Science University, Portland, Oregon. Cell, Developmental & Cancer Biology, Oregon Health and Science University, Portland, Oregon.
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19
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Revisiting the transcriptional analysis of primary tumours and associated nodal metastases with enhanced biological and statistical controls: application to thyroid cancer. Br J Cancer 2015; 112:1665-74. [PMID: 25965298 PMCID: PMC4430711 DOI: 10.1038/bjc.2014.665] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2014] [Revised: 11/12/2014] [Accepted: 11/18/2014] [Indexed: 12/22/2022] Open
Abstract
Background: Transcriptome profiling has helped characterise nodal spread. The interpretation of these data, however, is not without ambiguities. Methods: We profiled the transcriptomes of papillary thyroid cancer nodal metastases, associated primary tumours and primary tumours from N0 patients. We also included patient-matched non-cancerous thyroid and lymph node samples as controls to address some limits of previous studies. Results: The transcriptomes of patient-matched primary tumours and metastases were more similar than those of unrelated metastases/primary pairs, as previously reported in other organ systems. This similarity partly reflected patient background. Lymphoid tissues in the metastases confounded the comparison of patient-matched primary tumours and metastases. We circumvented this with an original data adjustment, revealing a differential expression of stroma-related gene signatures also regulated in other organs. The comparison of N0 vs N+ primary tumours uncovered a signal irreproducible across independent data sets. This signal was also detectable when comparing the non-cancerous thyroid tissues adjacent to N0 and N+ tumours, suggesting a cohort-specific bias also likely present in previous similarly sized studies. Classification of N0 vs N+ yielded an accuracy of 63%, but additional statistical controls absent in previous studies revealed that this is explainable by chance alone. We used large data sets from The Cancer Genome Atlas: N0 vs N+ classification was not better than random for most cancers. Yet, it was significant, but of limited accuracy (<70%) for thyroid, breast and head and neck cancers. Conclusions: The clinical potential of gene expression to predict nodal metastases seems limited for most cancers.
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Hu F, Liu H, Xie X, Mei J, Wang M. Activated cdc42-associated kinase is up-regulated in non-small-cell lung cancer and necessary for FGFR-mediated AKT activation. Mol Carcinog 2015; 55:853-63. [PMID: 25945695 DOI: 10.1002/mc.22327] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2014] [Revised: 12/09/2014] [Accepted: 03/26/2015] [Indexed: 11/08/2022]
Abstract
Activated cdc42-associated tyrosine kinase 1 (ACK1) has been reported to be implicated in non-small-cell lung cancer (NSCLC). However, the expression pattern and biological functions of ACK1 in the progression of NSCLC are not fully understood. In this study, it was found that the expression of ACK1 was significantly up-regulated in NSCLC samples compared to their adjacent normal tissues. Meanwhile, the expression of ACK1 was inversely correlated with the survival of NSCLC patients. Moreover, in the biological function studies, ACK1 was further validated to promote the growth, migration, and metastasis of NSCLC cells in vitro and in vivo. Mechanistically, ACK1 bind with FGFR1 and was essential for the phosphorylation of AKT induced by FGF. Our study demonstrated that ACK1 played an oncogenic role in the progression of NSCLC and ACK1 might be a promising target for the treatment of NSCLC.
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Affiliation(s)
- Fengqing Hu
- Department of Cardiothoracic Surgery, Xinhua Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai, China
| | - Hongcheng Liu
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Xiao Xie
- Department of Cardiothoracic Surgery, Xinhua Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai, China
| | - Ju Mei
- Department of Cardiothoracic Surgery, Xinhua Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai, China
| | - Mingsong Wang
- Department of Cardiothoracic Surgery, Xinhua Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai, China
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21
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Wang B, Xu T, Liu J, Zang S, Gao L, Huang A. Overexpression of activated Cdc42-associated kinase1 (Ack1) predicts tumor recurrence and poor survival in human hepatocellular carcinoma. Pathol Res Pract 2014; 210:787-92. [PMID: 25445114 DOI: 10.1016/j.prp.2014.09.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2014] [Revised: 08/15/2014] [Accepted: 09/23/2014] [Indexed: 01/25/2023]
Abstract
Hepatocellular carcinoma (HCC) is one of the most common cancers in China. Recent research suggested that activated Cdc42-associated kinase 1 (Ack1) played an important role in facilitating tumorigenesis, tumor invasion and metastasis. However, the role of Ack1 in HCC is not clear. Herein, the expression level of Ack1 mRNA in 30 fresh HCC specimens (carcinoma, peri-carcinoma and distal-carcinoma tissues) was detected by reverse transcription-polymerase chain reaction (RT-PCR), while the expression of Ack1 protein in 18 fresh HCC specimens (carcinoma, peri-carcinoma and distal-carcinoma tissues) was analyzed by Western blotting. Immunohistochemical (IHC) staining was also employed to assess both the expression level and distribution of Ack1 protein in HCC tissues collected from 173 lesions, so as to study the correlations between Ack1 protein expression and other HCC-related clinicopathologic parameters. The results showed that both Ack1 mRNA and protein were significantly over-expressed in HCC tissues than that of either peri-carcinoma or distal-carcinoma tissues (P < 0.001, P = 0.012, respectively), while there was no significant difference between peri-carcinoma and distal-carcinoma tissues. Furthermore, the results of IHC indicated that the rates of Ack1 expressions in the patients with capsular invasion, hepatic vessel involvement and recurrence were higher than without above three conditions (P = 0.037, P = 0.036, P = 0.019, respectively), whereas the patients with overexpression of Ack1 protein had low survival rate (P = 0.007). Ack1 expression, tumor size and recurrence were independently related to survival (P = 0.014, P = 0.018, P < 0.001, respectively). Thus, the level of Ack1 is associated with tumor invasion potential, and the expression of Ack1 plays an important role as predictor of recurrence and poor outcome in HCC patients.
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Affiliation(s)
- Bin Wang
- Department of Pathology and Institution of Oncology, School of Basic Medical Sciences, Fujian Medical University, Fuzhou 350004, China
| | - Tao Xu
- Department of Pathology, Yuncheng Central Hospital of Shanxi Province, Yuncheng 044000, China
| | - Jingfeng Liu
- Department of Hepatic Surgery, Liver Disease Center of the First Affiliated Hospital of Fujian Medical University, Fuzhou 350005, China
| | - Shengbing Zang
- Department of Pathology and Institution of Oncology, School of Basic Medical Sciences, Fujian Medical University, Fuzhou 350004, China
| | - Lingyun Gao
- Department of Pathology and Institution of Oncology, School of Basic Medical Sciences, Fujian Medical University, Fuzhou 350004, China
| | - Aimin Huang
- Department of Pathology and Institution of Oncology, School of Basic Medical Sciences, Fujian Medical University, Fuzhou 350004, China.
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Site-specific RNase A activity was dramatically reduced in serum from multiple types of cancer patients. PLoS One 2014; 9:e96490. [PMID: 24805924 PMCID: PMC4013009 DOI: 10.1371/journal.pone.0096490] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2013] [Accepted: 04/08/2014] [Indexed: 01/13/2023] Open
Abstract
Potent RNase activities were found in the serum of mammals but the physiological function of the RNases was never well illustrated, largely due to the caveats in methods of RNase activity measurement. None of the existing methods can distinguish between RNases with different target specificities. A systematic study was recently carried out in our lab to investigate the site-specificity of serum RNases on double-stranded RNA substrates, and found that serum RNases cleave double-stranded RNAs predominantly at 5′-U/A-3′ and 5′-C/A-3′ dinucleotide sites, in a manner closely resembling RNase A. Based on this finding, a FRET assay was developed in the current study to measure this site-specific serum RNase activity in human samples using a double stranded RNA substrate. We demonstrated that the method has a dynamic range of 10−5 mg/ml- 10−1 mg/ml using serial dilution of RNase A. The sera of 303 cancer patients were subjected to comparison with 128 healthy controls, and it was found that serum RNase activities visualized with this site-specific double stranded probe were found to be significantly reduced in patients with gastric cancer, liver cancer, pancreatic cancer, esophageal cancer, ovary cancer, cervical cancer, bladder cancer, kidney cancer and lung cancer, while only minor changes were found in breast and colon cancer patients. This is the first report using double stranded RNA as probe to quantify site-specific activities of RNase A in a serum. The results illustrated that RNase A might be further evaluated to determine if it can serve as a new class of biomarkers for certain cancer types.
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Bosutinib inhibits migration and invasion via ACK1 in KRAS mutant non-small cell lung cancer. Mol Cancer 2014; 13:13. [PMID: 24461128 PMCID: PMC3930897 DOI: 10.1186/1476-4598-13-13] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2013] [Accepted: 01/21/2014] [Indexed: 01/13/2023] Open
Abstract
The advent of effective targeted therapeutics has led to increasing emphasis on precise biomarkers for accurate patient stratification. Here, we describe the role of ACK1, a non-receptor tyrosine kinase in abrogating migration and invasion in KRAS mutant lung adenocarcinoma. Bosutinib, which inhibits ACK1 at 2.7 nM IC50, was found to inhibit cell migration and invasion but not viability in a panel of non-small cell lung cancer (NSCLC) cell lines. Knockdown of ACK1 abrogated bosutinib-induced inhibition of cell migration and invasion specifically in KRAS mutant cells. This finding was further confirmed in an in vivo zebrafish metastatic model. Tissue microarray data on 210 Singaporean lung adenocarcinomas indicate that cytoplasmic ACK1 was significantly over-expressed relative to paired adjacent non-tumor tissue. Interestingly, ACK1 expression in “normal” tissue adjacent to tumour, but not tumour, was independently associated with poor overall and relapse-free survival. In conclusion, inhibition of ACK1 with bosutinib attenuates migration and invasion in the context of KRAS mutant NSCLC and may fulfil a therapeutic niche through combinatorial treatment approaches.
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24
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Varisli L. Identification of new genes downregulated in prostate cancer and investigation of their effects on prognosis. Genet Test Mol Biomarkers 2013; 17:562-6. [PMID: 23621580 DOI: 10.1089/gtmb.2012.0524] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Prostate cancer is the most common noncutaneous malignant neoplasm in men in the Western countries. It is well established that genetic and epigenetic alterations are common events in prostate cancer, which may lead to aberrant expression of critical genes. Most of the studies are focused on the overexpressed or duplicated genes in prostate cancer. However, it is known that some of the differentially expressed genes in prostate cancer are downregulated. Since the inventory of downregulated genes is incomplete, we performed in silico approaches to reveal the novel prostate cancer downregulated genes. Moreover, we also investigated for a possible link between the expression of the downregulated genes and tumor grade, recurrence, metastasis, or survival status in prostate cancer. Our results showed that the expression of GSTP1 and AOX1 are downregulated in prostate cancer, in concordance with previous reports. Moreover, we showed that TPM2, CLU, and COL4A6 mRNA levels are downregulated in prostate cancer. Further, we found a significant negative correlation between the expression of the above-mentioned genes and the prognosis of prostate cancer.
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Affiliation(s)
- Lokman Varisli
- Department of Biology, Art and Science Faculty, Harran University, Osmanbey Campus, Sanliurfa, Turkey.
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25
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Chen W, Tang Z, Sun Y, Zhang Y, Wang X, Shen Z, Liu F, Qin X. miRNA expression profile in primary gastric cancers and paired lymph node metastases indicates that miR-10a plays a role in metastasis from primary gastric cancer to lymph nodes. Exp Ther Med 2011; 3:351-356. [PMID: 22969895 DOI: 10.3892/etm.2011.411] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2011] [Accepted: 11/22/2011] [Indexed: 12/19/2022] Open
Abstract
The aim of this study was to identify and evaluate microRNAs (miRNAs) in gastric cancer lymph node metastasis. A miRNA array was used to compare the expression of miRNAs in primary gastric cancer and paired lymph node metastases. miRNAs found to be differentially expressed were validated in a cohort of primary gastric cancer tissues, and the relationship between expression and the clinicopathological characteristics of the specimens was analyzed. The expression level of miR-10a in a gastric mucosal cell line and three gastric cancer cell lines was also detected using qPCR. Moreover, the target genes for miR-10a were predicted using bioinformatic methods. Based on the results, four differentially expressed miRNAs were detected by the miRNA array. Compared with primary gastric cancer, lymph node metastases displayed downregulated expression of miR-24-1(*), miR-510 and miR-1284, while the expression of miR-10a was upregulated. Consequently, analysis found that the expression of miR-10a was associated with lymph node metastasis (P=0.047), but was independent of the state of lymphatic invasion (P=0.169) in the cohort of primary gastric carcinoma. The expression of miR-10a was at least 10-fold higher in the three gastric cancer cell lines than in the gastric mucosal cell line. Two gastric cancer cell lines, which were established from lymph node metastasis, expressed higher miR-10a compared to the primary tumor origin cell line. Bioinformatic analysis demonstrated that the target genes of miR-10a are involved in multiple related pathways of tumorigenesis and metastasis. In conclusion, our study suggests that miR-10a is involved in the development of gastric cancer and lymph node metastasis, particularly in the latter process.
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Affiliation(s)
- Weidong Chen
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai
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26
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Holmes K, Egan B, Swan N, O'Morain C. Genetic Mechanisms and Aberrant Gene Expression during the Development of Gastric Intestinal Metaplasia and Adenocarcinoma. Curr Genomics 2011; 8:379-97. [PMID: 19412438 PMCID: PMC2671722 DOI: 10.2174/138920207783406460] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2007] [Revised: 09/21/2007] [Accepted: 09/28/2007] [Indexed: 02/07/2023] Open
Abstract
Gastric adenocarcinoma occurs via a sequence of molecular events known as the Correa’s Cascade which often progresses over many years. Gastritis, typically caused by infection with the bacterium H. pylori, is the first step of the cascade that results in gastric cancer; however, not all cases of gastritis progress along this carcinogenic route. Despite recent antibiotic intervention of H. pylori infections, gastric adenocarcinoma remains the second most common cause of cancer deaths worldwide. Intestinal metaplasia is the next step along the carcinogenic sequence after gastritis and is considered to be a precursor lesion for gastric cancer; however, not all patients with intestinal metaplasia develop adenocarcinoma and little is known about the molecular and genetic events that trigger the progression of intestinal metaplasia into adenocarcinoma. This review aims to highlight the progress to date in the genetic events involved in intestinal-type gastric adenocarcinoma and its precursor lesion, intestinal metaplasia. The use of technologies such as whole genome microarray analysis, immunohistochemical analysis and DNA methylation analysis has allowed an insight into some of the events which occur in intestinal metaplasia and may be involved in carcinogenesis. There is still much that is yet to be discovered surrounding the development of this lesion and how, in many cases, it develops into a state of malignancy.
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Affiliation(s)
- K Holmes
- Department of Clinical Medicine, Trinity College Dublin, The Adelaide and Meath Hospital, Tallaght, Dublin 24, Ireland
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Selamat SA, Galler JS, Joshi AD, Fyfe MN, Campan M, Siegmund KD, Kerr KM, Laird-Offringa IA. DNA methylation changes in atypical adenomatous hyperplasia, adenocarcinoma in situ, and lung adenocarcinoma. PLoS One 2011; 6:e21443. [PMID: 21731750 PMCID: PMC3121768 DOI: 10.1371/journal.pone.0021443] [Citation(s) in RCA: 85] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2011] [Accepted: 05/28/2011] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Aberrant DNA methylation is common in lung adenocarcinoma, but its timing in the phases of tumor development is largely unknown. Delineating when abnormal DNA methylation arises may provide insight into the natural history of lung adenocarcinoma and the role that DNA methylation alterations play in tumor formation. METHODOLOGY/PRINCIPAL FINDINGS We used MethyLight, a sensitive real-time PCR-based quantitative method, to analyze DNA methylation levels at 15 CpG islands that are frequently methylated in lung adenocarcinoma and that we had flagged as potential markers for non-invasive detection. We also used two repeat probes as indicators of global DNA hypomethylation. We examined DNA methylation in 249 tissue samples from 93 subjects, spanning the putative spectrum of peripheral lung adenocarcinoma development: histologically normal adjacent non-tumor lung, atypical adenomatous hyperplasia (AAH), adenocarcinoma in situ (AIS, formerly known as bronchioloalveolar carcinoma), and invasive lung adenocarcinoma. Comparison of DNA methylation levels between the lesion types suggests that DNA hypermethylation of distinct loci occurs at different time points during the development of lung adenocarcinoma. DNA methylation at CDKN2A ex2 and PTPRN2 is already significantly elevated in AAH, while CpG islands at 2C35, EYA4, HOXA1, HOXA11, NEUROD1, NEUROD2 and TMEFF2 are significantly hypermethylated in AIS. In contrast, hypermethylation at CDH13, CDX2, OPCML, RASSF1, SFRP1 and TWIST1 and global DNA hypomethylation appear to be present predominantly in invasive cancer. CONCLUSIONS/SIGNIFICANCE The gradual increase in DNA methylation seen for numerous loci in progressively more transformed lesions supports the model in which AAH and AIS are sequential stages in the development of lung adenocarcinoma. The demarcation of DNA methylation changes characteristic for AAH, AIS and adenocarcinoma begins to lay out a possible roadmap for aberrant DNA methylation events in tumor development. In addition, it identifies which DNA methylation changes might be used as molecular markers for the detection of preinvasive lesions.
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Affiliation(s)
- Suhaida A. Selamat
- Departments of Surgery and of Biochemistry and Molecular Biology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, California, United States of America
| | - Janice S. Galler
- Departments of Surgery and of Biochemistry and Molecular Biology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, California, United States of America
| | - Amit D. Joshi
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California, United States of America
| | - M. Nicky Fyfe
- Department of Pathology, Aberdeen Royal Infirmary, University of Aberdeen, Aberdeen, United Kingdom
| | - Mihaela Campan
- Departments of Surgery and of Biochemistry and Molecular Biology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, California, United States of America
| | - Kimberly D. Siegmund
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California, United States of America
| | - Keith M. Kerr
- Department of Pathology, Aberdeen Royal Infirmary, University of Aberdeen, Aberdeen, United Kingdom
| | - Ite A. Laird-Offringa
- Departments of Surgery and of Biochemistry and Molecular Biology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, California, United States of America
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Marimuthu A, Jacob HK, Jakharia A, Subbannayya Y, Keerthikumar S, Kashyap MK, Goel R, Balakrishnan L, Dwivedi S, Pathare S, Dikshit JB, Maharudraiah J, Singh S, Sameer Kumar GS, Vijayakumar M, Veerendra Kumar KV, Premalatha CS, Tata P, Hariharan R, Roa JC, Prasad T, Chaerkady R, Kumar RV, Pandey A. Gene Expression Profiling of Gastric Cancer. JOURNAL OF PROTEOMICS & BIOINFORMATICS 2011; 4:74-82. [PMID: 27030788 PMCID: PMC4809432 DOI: pmid/27030788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Gastric cancer is the second leading cause of cancer death worldwide, both in men and women. A genomewide gene expression analysis was carried out to identify differentially expressed genes in gastric adenocarcinoma tissues as compared to adjacent normal tissues. We used Agilent's whole human genome oligonucleotide microarray platform representing ~41,000 genes to carry out gene expression analysis. Two-color microarray analysis was employed to directly compare the expression of genes between tumor and normal tissues. Through this approach, we identified several previously known candidate genes along with a number of novel candidate genes in gastric cancer. Testican-1 (SPOCK1) was one of the novel molecules that was 10-fold upregulated in tumors. Using tissue microarrays, we validated the expression of testican-1 by immunohistochemical staining. It was overexpressed in 56% (160/282) of the cases tested. Pathway analysis led to the identification of several networks in which SPOCK1 was among the topmost networks of interacting genes. By gene enrichment analysis, we identified several genes involved in cell adhesion and cell proliferation to be significantly upregulated while those corresponding to metabolic pathways were significantly downregulated. The differentially expressed genes identified in this study are candidate biomarkers for gastric adenoacarcinoma.
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Affiliation(s)
- Arivusudar Marimuthu
- Institute of Bioinformatics, International Technology Park, Bangalore, 560066, India
- Manipal University, Madhav Nagar, Manipal, Karnataka 576104; India
| | - Harrys K.C. Jacob
- Institute of Bioinformatics, International Technology Park, Bangalore, 560066, India
- Manipal University, Madhav Nagar, Manipal, Karnataka 576104; India
- McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore 21205, Maryland, USA
- Department of Biological Chemistry, Johns Hopkins University School of Medicine, Baltimore 21205, Maryland, USA
| | - Aniruddha Jakharia
- Department of Zoology, Gauhati University, Guwahati 781014, Assam, India
- Imgenex India, Bhubaneswar 751024, Orissa, India
| | - Yashwanth Subbannayya
- Institute of Bioinformatics, International Technology Park, Bangalore, 560066, India
- Rajiv Gandhi University of Health Sciences, Bangalore, 560041, Karnataka, India
| | | | - Manoj Kumar Kashyap
- Institute of Bioinformatics, International Technology Park, Bangalore, 560066, India
- Department of Biotechnology, Kuvempu University, Shimoga 577451, Karnataka, India
| | - Renu Goel
- Institute of Bioinformatics, International Technology Park, Bangalore, 560066, India
- Department of Biotechnology, Kuvempu University, Shimoga 577451, Karnataka, India
| | - Lavanya Balakrishnan
- Institute of Bioinformatics, International Technology Park, Bangalore, 560066, India
- Department of Biotechnology, Kuvempu University, Shimoga 577451, Karnataka, India
| | - Sutopa Dwivedi
- Institute of Bioinformatics, International Technology Park, Bangalore, 560066, India
- School of Biotechnology, Amrita Vishwa Vidyapeetham University, Kollam 690525, Kerala, India
| | | | | | - Jagadeesha Maharudraiah
- Institute of Bioinformatics, International Technology Park, Bangalore, 560066, India
- RajaRajeswari Medical college, Bangalore, 560074, India
| | - Sujay Singh
- Imgenex India, Bhubaneswar 751024, Orissa, India
- Imgenex Corporation, San Diego 92121, California, USA
| | - Ghantasala S Sameer Kumar
- Institute of Bioinformatics, International Technology Park, Bangalore, 560066, India
- Department of Biotechnology, Kuvempu University, Shimoga 577451, Karnataka, India
| | - M. Vijayakumar
- Departments of Surgical Oncology, Kidwai Memorial Institute of Oncology, Bangalore 560029, Karnataka; India
| | | | | | - Pramila Tata
- Strand Life Sciences, Bangalore 560024, Karnataka, India
| | | | - Juan Carlos Roa
- Department of Pathology, Universidad de La Frontera, Temuco, Chile
| | - T.S.K Prasad
- Institute of Bioinformatics, International Technology Park, Bangalore, 560066, India
- Manipal University, Madhav Nagar, Manipal, Karnataka 576104; India
| | - Raghothama Chaerkady
- Institute of Bioinformatics, International Technology Park, Bangalore, 560066, India
- Manipal University, Madhav Nagar, Manipal, Karnataka 576104; India
- McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore 21205, Maryland, USA
- Department of Biological Chemistry, Johns Hopkins University School of Medicine, Baltimore 21205, Maryland, USA
| | - Rekha Vijay Kumar
- Department of Pathology, Kidwai Memorial Institute of Oncology, Bangalore 560029, Karnataka; India
- Corresponding authors: Akhilesh Pandey MD, PhD, McKusick-Nathans Institute of Genetic Medicine, 733 N. Broadway, BRB 527, Johns Hopkins University, Baltimore, MD 21205, Tel: 410-502-6662; Fax: 410-502-7544; , Rekha V. Kumar, MD, Department of Pathology, Kidwai Memorial Institute of Oncology, Bangalore, Karnataka 560029; India. Tel: 091-080-6560708; Fax: 091-080-6560723;
| | - Akhilesh Pandey
- McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore 21205, Maryland, USA
- Department of Biological Chemistry, Johns Hopkins University School of Medicine, Baltimore 21205, Maryland, USA
- Department of Oncology, Johns Hopkins University School of Medicine, Baltimore 21205, Maryland, USA
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore 21205, Maryland, USA
- Corresponding authors: Akhilesh Pandey MD, PhD, McKusick-Nathans Institute of Genetic Medicine, 733 N. Broadway, BRB 527, Johns Hopkins University, Baltimore, MD 21205, Tel: 410-502-6662; Fax: 410-502-7544; , Rekha V. Kumar, MD, Department of Pathology, Kidwai Memorial Institute of Oncology, Bangalore, Karnataka 560029; India. Tel: 091-080-6560708; Fax: 091-080-6560723;
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Zhu JS, Xu ZP, Song MQ, Zhang Q. Effect of Oxymatrine Combined with Low Dose 5-FU on Lymphatic Vessel and Microvascular Endothelial Cell Growth of Gastric Cancer in a Severe Combined Immunodeficient Mouse Orthotopic Implantation Model. EUR J INFLAMM 2011. [DOI: 10.1177/1721727x1100900107] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
In this study, we explored the effect of Oxymatrine combined with low dose 5-Fu on lymphatic vessel and vascular endothelial growth factor of orthotopic implantated gastric cancer in severe combined immunodeficient (SCID) nude mice. Human gastric cancer cell line SGC-7901 was orthotopically implanted into the gastric tract of nude mice. Nude mice were treated with normal saline (control group), low dose 5-Fu, oxymatrine, oxymatrine combined with low dose 5-Fu using intraperitoneal injection. The expression of LVD, VEGF-C, VEGF-D, VEGF-R-3 and their Ct were analyzed in a severe combined immunodeficient mouse orthotopic implantatation gastric cancer model. We found that oxymatrine combined with low dose 5-Fu could decrease LVD and inhibit VEGF expression by a synergistic effect in SCID nude mouse orthotopic implantatation gastric cancer model.
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Affiliation(s)
- J-S. Zhu
- Department of Gastroenterology, Sixth People's Hospital Affiliated to Shanghai Jiaotong University, Shanghai, China
| | - Z-P. Xu
- Department of Gastroenterology, Sixth People's Hospital Affiliated to Shanghai Jiaotong University, Shanghai, China
| | - M-Q. Song
- Department of Gastroenterology, Sixth People's Hospital Affiliated to Shanghai Jiaotong University, Shanghai, China
| | - Q. Zhang
- Department of Gastroenterology, Sixth People's Hospital Affiliated to Shanghai Jiaotong University, Shanghai, China
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Rajkumar T, Vijayalakshmi N, Gopal G, Sabitha K, Shirley S, Raja UM, Ramakrishnan SA. Identification and validation of genes involved in gastric tumorigenesis. Cancer Cell Int 2010; 10:45. [PMID: 21092330 PMCID: PMC3004887 DOI: 10.1186/1475-2867-10-45] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2010] [Accepted: 11/24/2010] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND Gastric cancer is one of the common cancers seen in south India. Unfortunately more than 90% are advanced by the time they report to a tertiary centre in the country. There is an urgent need to characterize these cancers and try to identify potential biomarkers and novel therapeutic targets. MATERIALS AND METHODS We used 24 gastric cancers, 20 Paired normal (PN) and 5 apparently normal gastric tissues obtained from patients with non-gastric cancers (Apparently normal - AN) for the microarray study followed by validation of the significant genes (n = 63) by relative quantitation using Taqman Low Density Array Real Time PCR. We then used a custom made Quantibody protein array to validate the expression of 15 proteins in gastric tissues (4 AN, 9 PN and 9 gastric cancers). The same array format was used to study the plasma levels of these proteins in 58 patients with gastric cancers and 18 from patients with normal/non-malignant gastric conditions. RESULTS Seventeen genes (ASPN, CCL15/MIP-1δ, MMP3, SPON2, PRSS2, CCL3, TMEPAI/PMEPAI, SIX3, MFNG, SOSTDC1, SGNE1, SST, IGHA1, AKR1B10, FCGBP, ATP4B, NCAPH2) were shown to be differentially expressed between the tumours and the paired normal, for the first time. EpCAM (p = 0.0001), IL8 (p = 0.0003), CCL4/MIP-1β (p = 0.0026), CCL20/MIP-3α (p = 0.039) and TIMP1 (p = 0.0017) tissue protein levels were significantly different (Mann Whitney U test) between tumours versus AN & PN. In addition, median plasma levels of IL8, CXCL9/MIG, CCL3/MIP-1α, CCL20/MIP-3α, PDGFR-B and TIMP1 proteins were significantly different between the non-malignant group and the gastric cancer group. The post-surgical levels of EpCAM, IGFBP3, IL8, CXCL10/IP10, CXCL9/MIG, CCL3/MIP-1α, CCL20/MIP-3α, SPP1/OPN and PDGFR-B showed a uniform drop in all the samples studied. CONCLUSIONS Our study has identified several genes differentially expressed in gastric cancers, some for the first time. Some of these have been confirmed at the protein level, as well. Some of these proteins will need to be evaluated further for their potential as diagnostic biomarkers in gastric cancers and some could be useful as follow-up markers in gastric cancer.
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Affiliation(s)
- Thangarajan Rajkumar
- Dept. of Molecular Oncology, Cancer Institute (WIA), 38, Sardar Patel Road, Chennai - 600036, India
| | | | - Gopisetty Gopal
- Dept. of Molecular Oncology, Cancer Institute (WIA), 38, Sardar Patel Road, Chennai - 600036, India
| | - Kesavan Sabitha
- Dept. of Molecular Oncology, Cancer Institute (WIA), 38, Sardar Patel Road, Chennai - 600036, India
| | - Sundersingh Shirley
- Dept. of Pathology, Cancer Institute (WIA), 38, Sardar Patel Road, Chennai - 600036, India
| | - Uthandaraman M Raja
- Dept. of Molecular Oncology, Cancer Institute (WIA), 38, Sardar Patel Road, Chennai - 600036, India
| | - Seshadri A Ramakrishnan
- Dept. of Surgical Oncology, Cancer Institute (WIA), 38, Sardar Patel Road, Chennai - 600036, India
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Evaluation and application of RNAs derived from laser microdissected specimens using DNA microarray for expression genomics. BIOCHIP JOURNAL 2010. [DOI: 10.1007/s13206-010-4409-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Gorlov IP, Sircar K, Zhao H, Maity SN, Navone NM, Gorlova OY, Troncoso P, Pettaway CA, Byun JY, Logothetis CJ. Prioritizing genes associated with prostate cancer development. BMC Cancer 2010; 10:599. [PMID: 21044312 PMCID: PMC2988752 DOI: 10.1186/1471-2407-10-599] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2010] [Accepted: 11/02/2010] [Indexed: 02/03/2023] Open
Abstract
Background The genetic control of prostate cancer development is poorly understood. Large numbers of gene-expression datasets on different aspects of prostate tumorigenesis are available. We used these data to identify and prioritize candidate genes associated with the development of prostate cancer and bone metastases. Our working hypothesis was that combining meta-analyses on different but overlapping steps of prostate tumorigenesis will improve identification of genes associated with prostate cancer development. Methods A Z score-based meta-analysis of gene-expression data was used to identify candidate genes associated with prostate cancer development. To put together different datasets, we conducted a meta-analysis on 3 levels that follow the natural history of prostate cancer development. For experimental verification of candidates, we used in silico validation as well as in-house gene-expression data. Results Genes with experimental evidence of an association with prostate cancer development were overrepresented among our top candidates. The meta-analysis also identified a considerable number of novel candidate genes with no published evidence of a role in prostate cancer development. Functional annotation identified cytoskeleton, cell adhesion, extracellular matrix, and cell motility as the top functions associated with prostate cancer development. We identified 10 genes--CDC2, CCNA2, IGF1, EGR1, SRF, CTGF, CCL2, CAV1, SMAD4, and AURKA--that form hubs of the interaction network and therefore are likely to be primary drivers of prostate cancer development. Conclusions By using this large 3-level meta-analysis of the gene-expression data to identify candidate genes associated with prostate cancer development, we have generated a list of candidate genes that may be a useful resource for researchers studying the molecular mechanisms underlying prostate cancer development.
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Affiliation(s)
- Ivan P Gorlov
- Department of Genitourinary Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.
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Liu A. Laser capture microdissection in the tissue biorepository. J Biomol Tech 2010; 21:120-125. [PMID: 20808641 PMCID: PMC2922833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
An important need of many cancer research projects is the availability of high-quality, appropriately selected tissue. Tissue biorepositories are organized to collect, process, store, and distribute samples of tumor and normal tissue for further use in fundamental and translational cancer research. This, in turn, provides investigators with an invaluable resource of appropriately examined and characterized tissue specimens and linked patient information. Human tissues, in particular, tumor tissues, are complex structures composed of heterogeneous mixtures of morphologically and functionally distinct cell types. It is essential to analyze specific cell types to identify and define accurately the biologically important processes in pathologic lesions. Laser capture microdissection (LCM) is state-of-the-art technology that provides the scientific community with a rapid and reliable method to isolate a homogeneous population of cells from heterogeneous tissue specimens, thus providing investigators with the ability to analyze DNA, RNA, and protein accurately from pure populations of cells. This is particularly well-suited for tumor cell isolation, which can be captured from complex tissue samples. The combination of LCM and a tissue biorepository offers a comprehensive means by which researchers can use valuable human biospecimens and cutting-edge technology to facilitate basic, translational, and clinical research. This review provides an overview of LCM technology with an emphasis on the applications of LCM in the setting of a tissue biorepository, based on the author's extensive experience in LCM procedures acquired at Fox Chase Cancer Center and Hollings Cancer Center.
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Affiliation(s)
- Angen Liu
- Tissue Biorepository, Hollings Cancer Center, Medical University of South Carolina, Charleston, South Carolina 29425, USA.
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Chua BT, Lim SJ, Tham SC, Poh WJ, Ullrich A. Somatic mutation in the ACK1 ubiquitin association domain enhances oncogenic signaling through EGFR regulation in renal cancer derived cells. Mol Oncol 2010; 4:323-34. [PMID: 20359967 DOI: 10.1016/j.molonc.2010.03.001] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2010] [Revised: 03/03/2010] [Accepted: 03/03/2010] [Indexed: 01/02/2023] Open
Abstract
Activated Cdc42-associated Kinase, ACK1, is a non-receptor tyrosine kinase with numerous interacting partners, including Cdc42 and EGFR. Gene amplification and overexpression of ACK1 were found in many cancer types such as those of the lung and prostate. Previously, we identified both somatic- and germ line missense mutations in the ACK1 coding sequence, by surveying 261 cancer cell lines and 15 control tissues. Here, we verified and characterized the non-synonymous mutation, ACK-S985 N, located in the ubiquitin association domain of the protein. Both overexpression and silencing experiments in MCF7 and A498 cells, respectively, demonstrated a role of the ACK1 S985 N mutation in enhancing cell proliferation, migration and anchorage-independent growth as well as the epithelial-mesenchymal transition. Further, we showed that the ACK1 S985 N mutant is unable to bind ubiquitin, unlike the wild type kinase. This contributed to ACK1 protein stability and stabilized EGFR after EGF stimulation, thereby prolonging mitogenic signaling in cancer cells. In addition, the ACK1 S985 N-EGFR interaction is enhanced, but not the ubiquitination of the receptor. Intriguingly, silencing of ACK1 in A498 cells sensitized the renal carcinoma cells to gefitinib, against which they are otherwise resistant. The work demonstrates that other than gene amplification, a single somatic mutation in ACK1 can result in extended protein stability enabling the oncoprotein to exert its oncogenic function in tumor progression. It also provides a rationale to target ACK1 in combination with other chemotherapeutic drugs, such as EGFR inhibitors, to potentiate therapeutic action against resistant tumors.
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Affiliation(s)
- Boon Tin Chua
- Singapore OncoGenome Project, Institute of Medical Biology, A* STAR, 8A Biomedical Grove, #06-06 Immunos, Singapore 138648, Singapore.
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Davies MN, Lawn S, Whatley S, Fernandes C, Williams RW, Schalkwyk LC. To What Extent is Blood a Reasonable Surrogate for Brain in Gene Expression Studies: Estimation from Mouse Hippocampus and Spleen. Front Neurosci 2009; 3:54. [PMID: 20582281 PMCID: PMC2858613 DOI: 10.3389/neuro.15.002.2009] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2009] [Accepted: 09/17/2009] [Indexed: 01/08/2023] Open
Abstract
Microarrays are designed to measure genome-wide differences in gene expression. In cases where a tissue is not accessible for analysis (e.g. human brain), it is of interest to determine whether a second, accessible tissue could be used as a surrogate for transcription profiling. Surrogacy has applications in the study of behavioural and neurodegenerative disorders. Comparison between hippocampus and spleen mRNA obtained from a mouse recombinant inbred panel indicates a high degree of correlation between the tissues for genes that display a high heritability of expression level. This correlation is not limited to apparent expression differences caused by sequence polymorphisms in the target sequences and includes both cis and trans genetic effects. A tissue such as blood could therefore give surrogate information on expression in brain for a subset of genes, in particular those co-expressed between the two tissues, which have heritably varying expression.
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Affiliation(s)
- Matthew N Davies
- Social, Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, King's College London London, UK
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Kresse SH, Ohnstad HO, Paulsen EB, Bjerkehagen B, Szuhai K, Serra M, Schaefer KL, Myklebost O, Meza-Zepeda LA. LSAMP, a novel candidate tumor suppressor gene in human osteosarcomas, identified by array comparative genomic hybridization. Genes Chromosomes Cancer 2009; 48:679-93. [PMID: 19441093 DOI: 10.1002/gcc.20675] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Osteosarcomas are the most common primary malignant tumor of bone, and almost all conventional osteosarcomas are high-grade tumors with complex karyotypes. We have examined DNA copy number changes in 36 osteosarcoma tumors and 20 cell lines using microarray-based comparative genomic hybridization. The most frequent minimal recurrent regions of gain identified in the tumor samples were in 1q21.2-q21.3 (78% of the samples), 1q21.3-q22 (78%), and 8q22.1 (72%). Minimal recurrent regions in 10q22.1-q22.2 (81%), 6q16.1 (67%), 13q14.2 (67%), and 13q21.1 (67%) were most frequently lost. A small region in 3q13.31 (2.1 Mb) containing the gene limbic system-associated membrane protein (LSAMP) was frequently deleted (56%). LSAMP has previously been reported to be a candidate tumor suppressor gene in other cancer types. The deletion was validated using fluorescence in situ hybridization, and the expression level and promoter methylation status of LSAMP were investigated using quantitative real-time reverse transcription PCR and methylation-specific PCR, respectively. LSAMP showed low expression compared to two normal bone samples in 6/15 tumors and 5/9 cell lines with deletion of 3q13.31, and also in 5/14 tumors and 3/11 cell lines with normal copy number or gain. Partial or full methylation of the investigated CpG island was identified in 3/30 tumors and 7/20 cell lines. Statistical analyses revealed that loss of 11p15.4-p15.3 and low expression of LSAMP (both P = 0.011) were significantly associated with poor survival. Our results show that LSAMP is a novel candidate tumor suppressor gene in osteosarcomas.
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Affiliation(s)
- Stine H Kresse
- Department of Tumor Biology, The Norwegian Radium Hospital, Rikshospitalet University Hospital, Oslo, Norway
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Stickel JS, Weinzierl AO, Hillen N, Drews O, Schuler MM, Hennenlotter J, Wernet D, Müller CA, Stenzl A, Rammensee HG, Stevanović S. HLA ligand profiles of primary renal cell carcinoma maintained in metastases. Cancer Immunol Immunother 2009; 58:1407-17. [PMID: 19184600 PMCID: PMC11031011 DOI: 10.1007/s00262-008-0655-6] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2008] [Accepted: 12/30/2008] [Indexed: 10/21/2022]
Abstract
In recent years, several approaches have been taken in the peptide-based immunotherapy of metastatic renal cell carcinoma (RCC), although little is known about HLA presentation on metastases compared to primary tumor and normal tissue of RCC. In this study we compared primary tumor, normal tissue and metastases with the aim of identifying similarities and differences between these tissues. We performed this comparison for two RCC patients on the level of the HLA ligandome using mass spectrometry and for three patients on the level of the transcriptome using oligonucleotide microarrays. The quantitative results show that primary tumor is more similar to metastasis than to normal tissue, both on the level of HLA ligand presentation and mRNA. We were able to characterize a total of 142 peptides in the qualitative analysis of HLA-presented peptides. Six of them were significantly overpresented on metastasis, among them a peptide derived from CD151; fourteen were overpresented on both primary tumor and metastasis compared to normal tissue, among them an HLA ligand derived from tumor protein p53. Thus, we could demonstrate that peptide-based immunotherapy might affect tumor as well as metastasis of RCC, but not healthy kidney tissue. Furthermore we were able to identify several peptides derived from tumor-associated antigens that are suitable for vaccination of metastatic RCC.
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Affiliation(s)
- Juliane Sarah Stickel
- Department of Immunology, Institute for Cell Biology, University of Tübingen, Tübingen, Germany.
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Tseng MY, Liu SY, Chen HR, Wu YJ, Chiu CC, Chan PT, Chiang WF, Liu YC, Lu CY, Jou YS, Chen JYF. Serine protease inhibitor (SERPIN) B1 promotes oral cancer cell motility and is over-expressed in invasive oral squamous cell carcinoma. Oral Oncol 2009; 45:771-6. [DOI: 10.1016/j.oraloncology.2008.11.013] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2008] [Revised: 11/25/2008] [Accepted: 11/26/2008] [Indexed: 10/21/2022]
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Fleming JS, McQuillan HJ, Millier MJ, Sellar GC. Expression of ovarian tumour suppressor OPCML in the female CD-1 mouse reproductive tract. Reproduction 2009; 137:721-6. [PMID: 19176311 DOI: 10.1530/rep-08-0511] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Opioid binding protein/cell adhesion molecule-like gene (OPCML) is frequently inactivated in epithelial ovarian cancer, but the role of this membrane protein in normal reproductive function is unclear. The ovarian surface epithelium (OSE) is thought to be the cell of origin of most epithelial ovarian cancers, some of which arise after transformation of OSE cells lining ovarian inclusion cysts, formed during ovulation. We used immunohistochemistry, immunoblotting and quantitative RT-PCR (qRT-PCR) to investigate OPCML expression in the uteri and ovaries of cycling 3-month CD-1 mice, as well as in ovaries from older mice containing inclusion cysts derived from rete ovarii tubules. Immunoblotting showed OPCML bands in uterine, but not whole ovarian or muscle extracts. Strong OPCML immunoreactivity was observed in oviduct, rete ovarii and uterus, whereas in ovary more immunoreactivity was seen in granulosa cells than OSE. No staining was observed in OSE around ovulation sites, where OSE cells divide to cover the site. OPCML immunoreactivity was also weaker in more dysplastic cells lining large ovarian inclusion cysts, compared with normal rete ovarii. No significant changes in Opcml mRNA expression were observed in whole ovarian and uterine extracts at different stages of the cycle. We conclude that murine OPCML is more consistently expressed in cells lining the uterus, oviduct and rete ovarii than in ovary and is not expressed in OSE associated with ovulation sites. This observation supports the hypothesis that a proportion of epithelial ovarian cancers arise from ductal cells and other epithelia of the secondary Mullerian system, rather than the OSE.
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Affiliation(s)
- Jean S Fleming
- Department of Anatomy and Structural Biology, University of Otago School of Medical Sciences, Dunedin 9054, New Zealand.
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Zhu JS, Guo H, Song MQ, Chen GQ, Sun Q, Zhang Q. Gene profiles between non-invasive and invasive colon cancer using laser microdissection and polypeptide analysis. World J Gastroenterol 2008; 14:5887-92. [PMID: 18855989 PMCID: PMC2751900 DOI: 10.3748/wjg.14.5887] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [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 explore the expression of differential gene expression profiles of target cell between non-invasive submucosal and invasive advanced tumor in colon carcinoma using laser microdissection (LMD) in combination with polypeptide analysis.
METHODS: Normal colon tissue samples from 20 healthy individuals and 30 cancer tissue samples from early non-invasive colon cancer cells were obtained. The cells from these samples were used LMD independently after P27-based amplification. aRNA from advanced colon cancer cells and metastatic cancer cells of 40 cases were applied to LMD and polypeptide analysis, semiquantitative reverse transcribed polymerase chain reaction (RT-PCR) and immunohistochemical assays were used to verify the results of microarray and further identify differentially expressed genes in non-invasive early stages of colon cancer.
RESULTS: Five gene expressions were changed in colon carcinoma cells compared with that of controls. Of the five genes, three genes were downregulated and two were upregulated in invasive submucosal colon carcinoma compared with non-invasive cases. The results were confirmed at the level of aRNA and gene expression. Five genes were further identified as differentially expressed genes in the majority of cases (> 50%, 25/40) in progression of colon cancer, and their expression patterns of which were similar to tumor suppressor genes or oncogenes.
CONCLUSION: This study suggested that combined use of polypeptide analysis might identify early expression profiles of five differential genes associated with the invasion of colon cancer. These results reveal that this gene may be a marker of submucosal invasion in early colon cancer.
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Cui Y, Ying Y, van Hasselt A, Ng KM, Yu J, Zhang Q, Jin J, Liu D, Rhim JS, Rha SY, Loyo M, Chan ATC, Srivastava G, Tsao GSW, Sellar GC, Sung JJY, Sidransky D, Tao Q. OPCML is a broad tumor suppressor for multiple carcinomas and lymphomas with frequently epigenetic inactivation. PLoS One 2008; 3:e2990. [PMID: 18714356 PMCID: PMC2500176 DOI: 10.1371/journal.pone.0002990] [Citation(s) in RCA: 85] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2008] [Accepted: 07/24/2008] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Identification of tumor suppressor genes (TSGs) silenced by CpG methylation uncovers the molecular mechanism of tumorigenesis and potential tumor biomarkers. Loss of heterozygosity at 11q25 is common in multiple tumors including nasopharyngeal carcinoma (NPC). OPCML, located at 11q25, is one of the downregulated genes we identified through digital expression subtraction. METHODOLOGY/PRINCIPAL FINDINGS Semi-quantitative RT-PCR showed frequent OPCML silencing in NPC and other common tumors, with no homozygous deletion detected by multiplex differential DNA-PCR. Instead, promoter methylation of OPCML was frequently detected in multiple carcinoma cell lines (nasopharyngeal, esophageal, lung, gastric, colon, liver, breast, cervix, prostate), lymphoma cell lines (non-Hodgkin and Hodgkin lymphoma, nasal NK/T-cell lymphoma) and primary tumors, but not in any non-tumor cell line and seldom weakly methylated in normal epithelial tissues. Pharmacological and genetic demethylation restored OPCML expression, indicating a direct epigenetic silencing. We further found that OPCML is stress-responsive, but this response is epigenetically impaired when its promoter becomes methylated. Ecotopic expression of OPCML led to significant inhibition of both anchorage-dependent and -independent growth of carcinoma cells with endogenous silencing. CONCLUSIONS/SIGNIFICANCE Thus, through functional epigenetics, we identified OPCML as a broad tumor suppressor, which is frequently inactivated by methylation in multiple malignancies.
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Affiliation(s)
- Yan Cui
- State Key Laboratory in Oncology in South China, Sir YK Pao Center for Cancer, Department of Clinical Oncology, Hong Kong Cancer Institute, Chinese University of Hong Kong, Hong Kong, China
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Metastasis: a therapeutic target for cancer. ACTA ACUST UNITED AC 2008; 5:206-19. [PMID: 18253104 DOI: 10.1038/ncponc1066] [Citation(s) in RCA: 259] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2007] [Accepted: 10/02/2007] [Indexed: 12/12/2022]
Abstract
Metastasis remains the major driver of mortality in patients with cancer. Our growing body of knowledge regarding this process provides the basis for the development of molecularly targeted therapeutics aimed at the tumor cell or its interaction with the host microenvironment. Here we discuss the similarity and differences between primary tumors and metastases, pathways controlling the colonization of a distant organ, and incorporation of antimetastatic therapies into clinical testing.
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Abstract
The complexity of the proteome is extremely high, because every organ or even a part of it can differ considerably in its protein composition. Performing proteomic studies therefore means to separate these functional different tissue areas before analysis. Otherwise all gained results will be depending on the question whether they are incorrect or at least dubious and do they reflect the different functions of tissues at all. The separation of functional tissue areas can be achieved by laser-based microdissection. In this review we will discuss the compatibly of microdissected formalin or cryofixed tissue with different proteomic techniques like 2-DE, MS and protein arrays.
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Affiliation(s)
- Ferdinand von Eggeling
- Core Unit Chip Application, Institute of Human Genetics and Anthropology, Medical Faculty at the Friedrich Schiller University Jena, Jena, Germany.
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Yang YQ, Zhang LJ, Dong H, Jiang CL, Zhu ZG, Wu JX, Wu YL, Han JS, Xiao HS, Gao HJ, Zhang QH. Upregulated expression of S100A6 in human gastric cancer. J Dig Dis 2007; 8:186-93. [PMID: 17970874 DOI: 10.1111/j.1751-2980.2007.00311.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
OBJECTIVE The expression of S100A6 (calcyclin), a member of the S100 calcium binding protein family, is elevated in a number of malignant tumors, but there have been few reports about its expression in gastric cancer. The aim of this study was to investigate its expression regulations in human gastric cancer and noncancerous mucosa, and the response to chemotherapeutic drugs in the gastric cancer cell line. MATERIALS AND METHODS In one matched gastric cancer sample pair, the serial analysis of gene expression (SAGE) experiment was conducted to compare the gene expression profiles between cancerous and adjacent tissues. To detect the expression regulations among more cancerous tissues, microarrays were carried out and real-time RT-PCR was conducted to validate the results. At the protein level, Western blot and tissue microarray (TMA) examination were further used to verify S100A6 expression. The regulation detection of S100A6 with flurouracil and doxorubicin at the mRNA and protein level was performed in the SGC7901 cell line. RESULTS With the SAGE strategy, five times more S100A6 tags were identified in cancer tissues than in normal tissues. With the cDNA microarray, S100A6 was found to be significantly upregulated in 21 of 42 (50%) nonselective gastric cancers. In 10 other paired samples, the upregulation of S100A6 was consolidated with RT-PCR and Western blot analysis as well. A total of 14 endoscopy-sectioned gastric noncancerous lesions and corresponding normal gastric mucosa were also applied to profile the gene expression; both cDNA microarray and RT-PCR demonstrated no significant alterations of S100A6 at the mRNA level. TMA examination showed that 34 of 52 (65.4%) cancer samples were positively stained, while only 17 of 80 (21.3%) noncancerous lesions were positively detected and all nine normal mucosae were detected to be negative. An in vitro experiment showed that in the gastric cell line SGC-7901, S100A6 mRNA was detected to be upregulated from 24 to 72 h after treatment with 5 mg/L 5-flurouracil or 0.3 mg/L doxorubicin, and there were two wave upregulations of the S100A6 protein. CONCLUSION The observed regulated expression of S100A6 suggests that it is associated with gastric cancer tumorigenesis and quantitation of S100A6 is a promising tool for diagnosis of gastric cancer.
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Affiliation(s)
- Yan Qing Yang
- State Key Laboratory of Medical Genomics, Shanghai Institute of Hematology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
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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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