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Yu K, Zhang D, Yao Q, Pan X, Wang G, Qian HY, Xiao Y, Chen Q, Mei K. Identification of functional genes regulating gastric cancer progression using integrated bioinformatics analysis. World J Clin Cases 2023; 11:5023-5034. [PMID: 37583848 PMCID: PMC10424021 DOI: 10.12998/wjcc.v11.i21.5023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 06/01/2023] [Accepted: 06/26/2023] [Indexed: 07/26/2023] Open
Abstract
BACKGROUND Gastric cancer (GC) is one of the most common cancers and has a poor prognosis. Treatment of GC has remained unchanged over the past few years. AIM To investigate the potential therapeutic targets and related regulatory biomarkers of GC. METHODS We obtained the public GC transcriptome sequencing dataset from the Gene Expression Omnibus database. The datasets contained 348 GC tissues and 141 healthy tissues. In total, 251 differentially expressed genes (DEGs) were identified, including 187 down-regulated genes and 64 up-regulated genes. The DEGs' enriched functions and pathways include Progesterone-mediated oocyte maturation, cell cycle, and oocyte meiosis, Hepatitis B, and the Hippo signaling pathway. Survival analysis showed that BUB1, MAD2L1, CCNA2, CCNB1, and BIRC5 may be associated with regulation of the cell cycle phase mitotic spindle checkpoint pathway. We selected 26 regulated genes with the aid of the protein-protein interaction network analyzed by Molecular Complex Detection. RESULTS We focused on three critical genes, which were highly expressed in GC, but negatively related to patient survival. Furthermore, we found that knockdown of BIRC5, TRIP13 or UBE2C significantly inhibited cell proliferation and induced cell apoptosis. In addition, knockdown of BIRC5, TRIP13 or UBE2C increased cellular sensitivity to cisplatin. CONCLUSION Our study identified significantly upregulated genes in GC with a poor prognosis using integrated bioinformatics methods.
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Affiliation(s)
- Kun Yu
- Department of Radiology, Shanghai Xuhui Dahua Hospital, Shanghai 200090, China
| | - Dong Zhang
- Department of Spinal Surgery, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200090, China
| | - Qiang Yao
- Department of Radiology, Shanghai Xuhui Dahua Hospital, Shanghai 200090, China
| | - Xing Pan
- Department of Radiology, Shanghai Xuhui Dahua Hospital, Shanghai 200090, China
| | - Gang Wang
- Department of Radiology, Shanghai Xuhui Dahua Hospital, Shanghai 200090, China
| | - Hai-Yang Qian
- Department of Radiology, Shanghai Xuhui Dahua Hospital, Shanghai 200090, China
| | - Yao Xiao
- Division of Chemistry and Ionizing Radiation Measurement Technology, Shanghai Institute of Measurement and Testing Technology, Shanghai 200090, China
| | - Qiong Chen
- Department of Radiology, Shanghai Xuhui Dahua Hospital, Shanghai 200090, China
| | - Ke Mei
- Department of Radiology, Shanghai Xuhui Dahua Hospital, Shanghai 200090, China
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Lohan-Codeço M, Barambo-Wagner ML, Nasciutti LE, Ribeiro Pinto LF, Meireles Da Costa N, Palumbo A. Molecular mechanisms associated with chemoresistance in esophageal cancer. Cell Mol Life Sci 2022; 79:116. [PMID: 35113247 PMCID: PMC11073146 DOI: 10.1007/s00018-022-04131-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 12/23/2021] [Accepted: 12/27/2021] [Indexed: 02/07/2023]
Abstract
Esophageal cancer (EC) is one of the most incident and lethal tumors worldwide. Although surgical resection is an important approach in EC treatment, late diagnosis, metastasis and recurrence after surgery have led to the management of adjuvant and neoadjuvant therapies over the past few decades. In this scenario, 5-fluorouracil (5-FU) and cisplatin (CISP), and more recently paclitaxel (PTX) and carboplatin (CBP), have been traditionally used in EC treatment. However, chemoresistance to these agents along EC therapeutic management represents the main obstacle to successfully treat this malignancy. In this sense, despite the fact that most of chemotherapy drugs were discovered several decades ago, in many cases, including EC, they still represent the most affordable and widely employed treatment approach for these tumors. Therefore, this review summarizes the main mechanisms through which the response to the most widely chemotherapeutic agents used in EC treatment is impaired, such as drug metabolism, apoptosis resistance, cancer stem cells (CSCs), cell cycle, autophagy, energetic metabolism deregulation, tumor microenvironment and epigenetic modifications.
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Affiliation(s)
- Matheus Lohan-Codeço
- Laboratório de Interações Celulares, Instituto de Ciências Biomédicas, Programa de Pesquisa em Biologia Celular e do Desenvolvimento, Universidade Federal do Rio de Janeiro, Prédio do Centro de Ciências da Saúde-Cidade Universitária, Ilha do Fundão, Rua César Pernetta, 1766 (LS.3.01), Rio de Janeiro, RJ, Brasil
| | - Maria Luísa Barambo-Wagner
- Programa de Carcinogênese Molecular Coordenação de Pesquisa, Instituto Nacional de Câncer-INCA, Rua André Cavalcanti, 37-6ºandar-Centro, Rio de Janeiro, RJ, 20231-050, Brazil
| | - Luiz Eurico Nasciutti
- Laboratório de Interações Celulares, Instituto de Ciências Biomédicas, Programa de Pesquisa em Biologia Celular e do Desenvolvimento, Universidade Federal do Rio de Janeiro, Prédio do Centro de Ciências da Saúde-Cidade Universitária, Ilha do Fundão, Rua César Pernetta, 1766 (LS.3.01), Rio de Janeiro, RJ, Brasil
| | - Luis Felipe Ribeiro Pinto
- Programa de Carcinogênese Molecular Coordenação de Pesquisa, Instituto Nacional de Câncer-INCA, Rua André Cavalcanti, 37-6ºandar-Centro, Rio de Janeiro, RJ, 20231-050, Brazil
| | - Nathalia Meireles Da Costa
- Programa de Carcinogênese Molecular Coordenação de Pesquisa, Instituto Nacional de Câncer-INCA, Rua André Cavalcanti, 37-6ºandar-Centro, Rio de Janeiro, RJ, 20231-050, Brazil.
| | - Antonio Palumbo
- Laboratório de Interações Celulares, Instituto de Ciências Biomédicas, Programa de Pesquisa em Biologia Celular e do Desenvolvimento, Universidade Federal do Rio de Janeiro, Prédio do Centro de Ciências da Saúde-Cidade Universitária, Ilha do Fundão, Rua César Pernetta, 1766 (LS.3.01), Rio de Janeiro, RJ, Brasil.
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Peng X, Wang J, Li D, Chen X, Liu K, Zhang C, Lai Y. Identification of grade-related genes and construction of a robust genomic-clinicopathologic nomogram for predicting recurrence of bladder cancer. Medicine (Baltimore) 2020; 99:e23179. [PMID: 33217824 PMCID: PMC7676566 DOI: 10.1097/md.0000000000023179] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Bladder cancer (BC) is a common tumor in the urinary system with a high recurrence rate. The individualized treatment and follow-up after surgery is the key to a successful outcome. Currently, the surveillance strategies are mainly depending on tumor stage and grade. Previous evidence has proved that tumor grade was a significant and independent risk factor of BC recurrence. Exploring the grade-related genes may provide us a new approach to predict prognosis and guide the post-operative treatment in BC patients. METHODS In this study, the weighted gene co-expression network analysis was applied to identify the hub gene module correlated with BC grade using GSE71576. After constructing a protein-protein interaction (PPI) network with the hub genes inside the hub gene module, we identified some potential core genes. TCGA and another independent dataset were used for further validation. RESULTS The results revealed that the expression of AURKA, CCNA2, CCNB1, KIF11, TTK, BUB1B, BUB1, and CDK1 were significantly higher in high-grade BC, showing a strong ability to distinguish BC grade. The expression levels of the 8 genes in normal, paracancerous, tumorous, and recurrent bladder tissues were progressively increased. By conducting survival analysis, we proved their prognostic value in predicting the recurrence of BC. Eventually, we constructed a prognostic nomogram by combining the 8-core-gene panel with clinicopathologic features, which had shown great performance in predicting the recurrence of BC. CONCLUSION We identified 8 core genes that revealed a significant correlation with the tumor grade as well as the recurrence of BC. Finally, we proved the value of a novel prognostic nomogram for predicting the relapse-free survival of BC patients after surgery, which could guide their treatment and follow-up.
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Affiliation(s)
- Xiqi Peng
- Guangdong and Shenzhen Key Laboratory of Male Reproductive Medicine and Genetics, Peking University Shenzhen Hospital, Shenzhen
- Shantou University Medical College, Shantou, Guangdong
| | - Jingyao Wang
- Guangdong and Shenzhen Key Laboratory of Male Reproductive Medicine and Genetics, Peking University Shenzhen Hospital, Shenzhen
| | - Dongna Li
- Shantou University Medical College, Shantou, Guangdong
| | - Xuan Chen
- Guangdong and Shenzhen Key Laboratory of Male Reproductive Medicine and Genetics, Peking University Shenzhen Hospital, Shenzhen
- Shantou University Medical College, Shantou, Guangdong
| | - Kaihao Liu
- Guangdong and Shenzhen Key Laboratory of Male Reproductive Medicine and Genetics, Peking University Shenzhen Hospital, Shenzhen
- Anhui Medical University, Hefei, Anhui, China
| | - Chunduo Zhang
- Guangdong and Shenzhen Key Laboratory of Male Reproductive Medicine and Genetics, Peking University Shenzhen Hospital, Shenzhen
| | - Yongqing Lai
- Guangdong and Shenzhen Key Laboratory of Male Reproductive Medicine and Genetics, Peking University Shenzhen Hospital, Shenzhen
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Kit OI, Trifanov VS, Petrusenko NA, Gvaldin DY, Kutilin DS, Timoshkina NN. Identification of new candidate genes and signalling pathways associated with the development of neuroendocrine pancreatic tumours based on next generation sequencing data. Mol Biol Rep 2020; 47:4233-4243. [PMID: 32451928 DOI: 10.1007/s11033-020-05534-z] [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: 03/29/2020] [Accepted: 05/14/2020] [Indexed: 10/24/2022]
Abstract
Despite advances in classification, treatment, and imaging, neuroendocrine tumours remain a clinically complex subject. In this work, we studied the genetic profile of well-differentiated pancreatic neuroendocrine tumours (PanNETs) in a cohort of Caucasian patients and analysed the signalling pathways and candidate genes potentially associated with the development of this oncological disease. Twenty-four formalin-fixed paraffin-embedded (FFPE) samples of well-differentiated PanNETs were subjected to massive parallel sequencing using the targeted gene panel (409 genes) of the Illumina NextSeq 550 platform (San Diego, USA). In 24 patients, 119 variants were identified in 54 genes. The median mutation rate per patient was 5 (2.8-7). The detected genetic changes were dominated by missense mutations (67%) and nonsense mutations (29%). 18% of the mutations were activating, 35% of the variants led to a loss of function of the encoded protein, and 52% were not classified. Twenty-six variants were described as new. Functionally significant changes in the tertiary structure and activity of the protein molecules in an in silico assay were predicted for 5 new genetic variants. The 5 highest priority candidate genes were selected: CREB1, TCF12, PRKAR1A, BCL11A, and BUB1B. Genes carrying the identified mutations participate in signalling pathways known to be involved in PanNETs; in addition, 38% of the cases showed genetic changes in the regulation of the SMAD2/3 signalling pathway. Well-differentiated PanNETs in a Russian cohort demonstrate various molecular genetic features, including new genetic variations and potential driver genes. The highlighted molecular genetic changes in the SMAD2/3 signalling pathway suggest new prospects for targeted therapy.
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Affiliation(s)
- Oleg I Kit
- Department of Abdominal Oncology No. 1, Rostov Research Institute of Oncology, Rostov-on-Don, Russia
| | - Vladimir S Trifanov
- Department of Abdominal Oncology No. 1, Rostov Research Institute of Oncology, Rostov-on-Don, Russia
| | - Nataliya A Petrusenko
- Laboratory of Molecular Oncology, Rostov Research Institute of Oncology, 14 line, 6, Rostov-on-Don, Russia, 344037
| | - Dmitry Y Gvaldin
- Laboratory of Molecular Oncology, Rostov Research Institute of Oncology, 14 line, 6, Rostov-on-Don, Russia, 344037.
| | - Denis S Kutilin
- Laboratory of Molecular Oncology, Rostov Research Institute of Oncology, 14 line, 6, Rostov-on-Don, Russia, 344037
| | - Nataliya N Timoshkina
- Laboratory of Molecular Oncology, Rostov Research Institute of Oncology, 14 line, 6, Rostov-on-Don, Russia, 344037
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Overexpression of BUB1B, CCNA2, CDC20, and CDK1 in tumor tissues predicts poor survival in pancreatic ductal adenocarcinoma. Biosci Rep 2019; 39:BSR20182306. [PMID: 30765611 PMCID: PMC6390130 DOI: 10.1042/bsr20182306] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2018] [Revised: 01/29/2019] [Accepted: 02/04/2019] [Indexed: 01/28/2023] Open
Abstract
Overexpressed genes in tumors usually contributed to aggressiveness in pancreatic ductal adenocarcinoma (PDAC). Using Gene Expression Omnibus (GEO) profiles including GSE46234, GSE71989, and GSE107610, we detected overexpressed genes in tumors with R program, which were enriched by Kyoto Encyclopedia of Genes and Genomes (KEGG), Gene ontology (GO), and Reactome pathway databases. Then, we performed a survival analysis of enriched genes based on TCGA profile. Our results revealed that high BUB1B, CCNA2, CDC20, and CDK1 expression in tumors was significantly associated with worse overall survival (OS) (Log rank P=0.00338, P=0.0447, P=0.00965, and P=0.00479, respectively), which was validated using a Kaplan–Meier plotter with a median cutoff (Log rank P=0.028, P=0.0035, P=0.039, and P=0.0033, respectively). Moreover, overexpression of BUB1B, CCNA2, CDC20, and CDK1 in tumor tissues was significantly associated with disease-free survival (DFS) in PDAC patients (Log rank P=0.00565, P=0.0357, P=0.00104, and P=0.00121, respectively). BUB1B, CCNA2, CDC20, and CDK1 were significantly overexpressed in deceased PDAC patients (all P<0.01) and in patients with recurrence/disease progression (all P<0.05). In addition, PDAC patients with neoplasms of histologic grade G3-4 had significantly higher BUB1B, CCNA2 and CDC20 levels (all P<0.05). In conclusion, the up-regulation of BUB1B, CCNA2, CDC20, CDK1, and WEE1 in tumor tissues are associated with worse OS and DFS in PDAC and is correlated with advanced tumor stage and tumor development.
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Zhu Z, Jin Z, Deng Y, Wei L, Yuan X, Zhang M, Sun D. Co-expression Network Analysis Identifies Four Hub Genes Associated With Prognosis in Soft Tissue Sarcoma. Front Genet 2019; 10:37. [PMID: 30778371 PMCID: PMC6369179 DOI: 10.3389/fgene.2019.00037] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Accepted: 01/18/2019] [Indexed: 12/13/2022] Open
Abstract
Background: Soft tissue sarcomas (STS) are heterogeneous tumors derived from mesenchymal cells that differentiate into soft tissues. The prognosis of patients who present with an STS is influenced by the regulation of a complex gene network. Methods: Weighted gene co-expression network analysis (WGCNA) was performed to identify gene modules associated with STS (Samples = 156). Results: Among the 11 modules identified, the black and blue modules were highly correlated with STS. However, using preservation analysis, the black module demonstrated low preservation, therefore the blue module was chosen as the module of interest. Furthermore, a total of 20 network hub genes were identified in the blue module, 12 of which were also hub nodes in the protein-protein interaction network of the module genes. Following additional verification, 4 of 12 genes (RRM2, BUB1B, CENPF, and KIF20A) demonstrated poorer overall survival and disease-free survival rate in the test datasets. In addition, gene set enrichment analysis (GSEA) demonstrated that samples with a high level of blue module eigengene (ME) were enriched in cell cycle and metabolism associated signaling pathways. Conclusion: In summary, co-expression network analysis identified four hub genes associated with prognosis for STS, which may diminish the prognosis by influencing cell cycle and metabolism associated signaling pathways.
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Affiliation(s)
- Zhenhua Zhu
- Department of Orthopaedic Trauma, The First Hospital of Jilin University, Changchun, China
| | - Zheng Jin
- Department of Immunology, College of Basic Medical Sciences, Jilin University, Changchun, China
| | - Yuyou Deng
- Department of Urology, The First Hospital of Jilin University, Changchun, China
| | - Lai Wei
- College of Computer and Control Engineering, Nankai University, Tianjin, China
| | - Xiaowei Yuan
- Department of Orthopaedic Trauma, The First Hospital of Jilin University, Changchun, China
| | - Mei Zhang
- College of Chemistry, Jilin University, Changchun, China
| | - Dahui Sun
- Department of Orthopaedic Trauma, The First Hospital of Jilin University, Changchun, China
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He W, Chen L, Yuan K, Zhou Q, Peng L, Han Y. Gene set enrichment analysis and meta-analysis to identify six key genes regulating and controlling the prognosis of esophageal squamous cell carcinoma. J Thorac Dis 2018; 10:5714-5726. [PMID: 30505479 DOI: 10.21037/jtd.2018.09.55] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Background Esophageal squamous cell carcinoma (ESCC) is a common malignancy with high mortality. Because of the lack of clarity in the relevant genes and mechanisms involved, and the current difficulty for oncotherapy in providing therapeutic solutions, there is an urgent need to study this matter. While gene probe studies have been used to select the most virulent genes and pathways, paucity of case controls during gene screening and lack of conclusive results to expound the etiology and pathogenesis of the disease, have reduced study reliability. Methods We chose six datasets from independent studies in the Gene Expression Omnibus (GEO) database and used gene set enrichment analysis and meta-analysis to select key genes and pathways. Results We found four down-regulated and four up-regulated pathways through gene set enrichment analysis, and 406 differential genes through meta-analysis. Based on The Cancer Genome Atlas (TCGA), 995 differentially expressed genes were screened out. Comparing the 406 gene set with the 995 gene set, we found 19 common genes, of which 6 had a common pathway and were screened out as key genes regulating and controlling the prognosis of ESCC. Conclusions Among the 19 genes, we found three genes that affect the chemotherapy of ESCC: BUB1B, BUB1, and TTK. Another three genes NDC1, NUP107, and NUP155 on the RNA transport pathway were also found. Altogether, these six genes are not only crucial in the development of ESCC, but also determine the prognosis of patients. The key genes and pathways identified in the present study will be used for the next stage in our study, which will involve gene elimination and other experimentation methods.
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Affiliation(s)
- Wenwu He
- Department of Thoracic Surgery, Sichuan Cancer Hospital and Research Institute, Chengdu 610041, China
| | - Linxin Chen
- Department of Clinical Medicine, North Sichuan Medical College, Nanchong 637000, China
| | - Kun Yuan
- Department of Anesthesiology, North Sichuan Medical College, Nanchong 637000, China
| | - Qiuxi Zhou
- Department of Respiratory Medicine, Nanchong Central Hospital, Nanchong 637000, China
| | - Lin Peng
- Department of Thoracic Surgery, Sichuan Cancer Hospital and Research Institute, Chengdu 610041, China
| | - Yongtao Han
- Department of Thoracic Surgery, Sichuan Cancer Hospital and Research Institute, Chengdu 610041, China
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Chen X, Cai S, Li B, Zhang X, Li W, Linag H, Cao X. Identification of key genes and pathways for esophageal squamous cell carcinoma by bioinformatics analysis. Exp Ther Med 2018; 16:1121-1130. [PMID: 30112053 PMCID: PMC6090437 DOI: 10.3892/etm.2018.6316] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Accepted: 04/06/2018] [Indexed: 12/17/2022] Open
Abstract
The aim of the present study was to identify the differentially expressed genes (DEGs) in esophageal squamous-cellcarcinoma (ESCC) and provide potential therapeutic targets. The microarray dataset GSE20347 was downloaded from the Gene Expression Omnibus (GEO) database, and included 17 tissue samples and 13 normal adjacent tissue samples from patients with ESCC. A total of 22,277 DEGs were identified. A heat map for the DEGs was constructed with the Morpheus online tool and the top 200 genes (100 upregulated and 100 downregulated) were selected for further bioinformatics analysis, including analysis of gene ontology (GO) terms, Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways, protein-protein interaction networks and Spearman's correlation tests. The results of the GO analysis indicated that the upregulated DEGs were most significantly enriched in membrane-bounded vesicles in the cellular component (CC) category, but were not significantly enriched in any GO terms of the categories biological process (BP) or molecular function (MF); furthermore, the downregulated DEGs were most significantly enriched in regulation of DNA metabolic processes, nucleotide binding and chromosomes in the categories BP, MF and CC, respectively. The KEGG analysis indicated that the downregulated DEGs were enriched in the regulation of cell cycle pathways. The top 10 hub proteins in the protein-protein interaction network were cyclin-dependent kinase 4, budding uninhibited by benzimidazoles 1, cyclin B2, heat shock protein 90AA1, aurora kinase A, H2A histone family member Z, replication factor C subunit 4, and minichromosome maintenance complex component 2, −4 and −7. These proteins are mainly involved in regulating tumor progression. The genes in the four top modules were mainly implicated in regulating cell cycle pathways. Secreted Ly-6/uPAR-related protein (SLURP) was the hub gene, and SLURP and its interacting genes were most enriched in the chromosomal part in the CC category, organelle organization in the BP category and protein binding in the MF category, and were involved in pathways including DNA replication, cell cycle and P53 signaling. The expression of SLURP-1 in fifteen patients with esophageal carcinoma was detected using quantitative polymerase chain reaction analysis, and the results indicated that SLURP-1 expression was significantly decreased in the tumor samples relative to that in normal adjacent tissues. These results suggest that several hub proteins and the hub gene SLURP-1 may serve as potential therapeutic targets, and that gene dysfunction may be involved in the tumorigenesis of ESCC.
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Affiliation(s)
- Xiaohua Chen
- Department of Oncology, Panyu Central Hospital, Cancer Institute of Panyu, Guangzhou, Guangdong 511400, P.R. China
| | - Sina Cai
- Department of Oncology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong 510630, P.R. China
| | - Baoxia Li
- State Laboratory of Oncology in South China, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong 510060, P.R. China
| | - Xiaona Zhang
- Graceland Medical Center, The Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong 510655, P.R. China
| | - Wenhui Li
- Department of Oncology, Panyu Central Hospital, Cancer Institute of Panyu, Guangzhou, Guangdong 511400, P.R. China
| | - Henglun Linag
- Department of Oncology, Panyu Central Hospital, Cancer Institute of Panyu, Guangzhou, Guangdong 511400, P.R. China
| | - Xiaolong Cao
- Department of Oncology, Panyu Central Hospital, Cancer Institute of Panyu, Guangzhou, Guangdong 511400, P.R. China
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Zhuang L, Yang Z, Meng Z. Upregulation of BUB1B, CCNB1, CDC7, CDC20, and MCM3 in Tumor Tissues Predicted Worse Overall Survival and Disease-Free Survival in Hepatocellular Carcinoma Patients. BIOMED RESEARCH INTERNATIONAL 2018; 2018:7897346. [PMID: 30363964 PMCID: PMC6186344 DOI: 10.1155/2018/7897346] [Citation(s) in RCA: 88] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/05/2018] [Revised: 09/04/2018] [Accepted: 09/13/2018] [Indexed: 02/08/2023]
Abstract
OBJECTIVE To evaluate the association between upregulated differentially expressed genes (DEGs) and the outcomes of patients with hepatocellular carcinoma (HCC). METHODS Using Gene Expression Omnibus (GEO) datasets including GSE45436, GSE55092, GSE60502, GSE84402, and GSE17548, we detected upregulated DEGs in tumors. KEGG, GO, and Reactome enrichment analysis of the DEGs was conducted to clarify their function. The impact of the upregulated DEGs on patients' survival was analyzed based on TCGA profile. RESULTS 161 shared upregulated DEGs were identified among GSE45436, GSE55092, GSE60502, and GSE84402 profiles. Cell cycle was the shared pathway/biological process in the gene sets investigation among databases of KEGG, GO, and Reactome. After being validated in GSE17548, 13 genes including BUB1B, CCNA2, CCNB1, CCNE2, CDC20, CDC6, CDC7, CDK1, CDK4, CDKN2A, CHEK1, MAD2L1, and MCM3 in cell cycle pathway were shared in the three databases for enrichment. The expression of BUB1B, CCNB1, CDC7, CDC20, and MCM3 was upregulated in HCC tissues when compared with adjacent normal tissues in 6.67%, 7.5%, 8.06%, 5.56%, and 9.72% of HCC patients, respectively. Overexpression of BUB1B, CCNB1, CDC7, CDC20, and MCM3 in HCC tissues accounted for poorer overall survival (OS) and disease-free survival (DFS) in HCC patients (all log rank P < 0.05). BUB1B, CCNB1, CDC7, CDC20, and MCM3 were all overexpressed in HCC patients with neoplasm histologic grade G3-4 compared to those with G1-2 (all P < 0.05). BUB1B, CCNB1, and CDC20 were significantly upregulated in HCC patients with vascular invasion (all P < 0.05). Additionally, levels of BUB1B, CCNB1, CDC7, and CDC20 were significantly higher in HCC patients deceased, recurred, or progressed (all P < 0.05). CONCLUSION Correlated with advanced histologic grade and/or vascular invasion, upregulation of BUB1B, CCNB1, CDC7, CDC20, and MCM3 in HCC tissues predicted worse OS and DFS in HCC patients. These genes could be novel therapeutic targets for HCC treatment.
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Affiliation(s)
- Liping Zhuang
- 1Department of Integrative Oncology, Fudan University Shanghai Cancer Center and Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Zongguo Yang
- 2Department of Integrative Medicine, Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China
| | - Zhiqiang Meng
- 1Department of Integrative Oncology, Fudan University Shanghai Cancer Center and Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
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Fu X, Chen G, Cai ZD, Wang C, Liu ZZ, Lin ZY, Wu YD, Liang YX, Han ZD, Liu JC, Zhong WD. Overexpression of BUB1B contributes to progression of prostate cancer and predicts poor outcome in patients with prostate cancer. Onco Targets Ther 2016; 9:2211-20. [PMID: 27143916 PMCID: PMC4844448 DOI: 10.2147/ott.s101994] [Citation(s) in RCA: 70] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
BUB1 mitotic checkpoint serine/threonine kinase B (BUB1B) is a member of the spindle assembly checkpoint protein family, which has been proven to be associated with many kinds of cancers. The aim of this study was to investigate whether BUB1B was correlated with progression and prognosis in patients with prostate cancer (PCa) and how BUB1B regulated the proliferation, migration, and invasion of PCa cell lines. Compared to benign prostate cells and tissues, both messenger RNA and protein expressions of BUB1B were statistically increased in PCa cell lines and tumor tissues. In vitro studies revealed that BUB1B overexpression enhanced the proliferation, migration, and invasion ability of PCa cell lines, whereas depletion of BUB1B did not affect the cell functions. Microarray analysis showed the positive staining of BUB1B was upregulated in the higher Gleason score group, which also correlated with advanced clinicopathological stage, higher serum prostate-specific antigen, metastasis, overall survival, and prostate-specific antigen failure. Furthermore, the survival analysis indicated that high expression of BUB1B was an independent predictor for shorter biochemical recurrence-free survival, which had no effect on overall survival. BUB1B plays an important role in tumor growth and progression, which can lead to its use as a potential biomarker for the diagnosis and prognosis of PCa.
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Affiliation(s)
- Xin Fu
- Department of Urology, Guangdong Key Laboratory of Clinical Molecular Medicine and Diagnostics, Guangzhou First People's Hospital, Guangzhou Medical University, People's Republic of China
| | - Guo Chen
- Department of Urology, Guangdong Key Laboratory of Clinical Molecular Medicine and Diagnostics, Guangzhou First People's Hospital, Guangzhou Medical University, People's Republic of China
| | - Zhi-Duan Cai
- Department of Urology, Guangdong Key Laboratory of Clinical Molecular Medicine and Diagnostics, Guangzhou First People's Hospital, Guangzhou Medical University, People's Republic of China; Guangdong Provincial Institute of Nephrology, Nanfang Hospital, Southern Medical University, People's Republic of China
| | - Cong Wang
- School of Pharmacy, Wenzhou Medical University, Wenzhou, People's Republic of China
| | - Ze-Zhen Liu
- Department of Urology, Guangdong Key Laboratory of Clinical Molecular Medicine and Diagnostics, Guangzhou First People's Hospital, Guangzhou Medical University, People's Republic of China
| | - Zhuo-Yuan Lin
- Department of Urology, Guangdong Key Laboratory of Clinical Molecular Medicine and Diagnostics, Guangzhou First People's Hospital, Guangzhou Medical University, People's Republic of China; Guangdong Provincial Institute of Nephrology, Nanfang Hospital, Southern Medical University, People's Republic of China
| | - Yong-Ding Wu
- Department of Urology, Guangdong Key Laboratory of Clinical Molecular Medicine and Diagnostics, Guangzhou First People's Hospital, Guangzhou Medical University, People's Republic of China; School of Public Health, Guangzhou Medical University, Guangzhou, People's Republic of China
| | - Yu-Xiang Liang
- Department of Urology, Guangdong Key Laboratory of Clinical Molecular Medicine and Diagnostics, Guangzhou First People's Hospital, Guangzhou Medical University, People's Republic of China
| | - Zhao-Dong Han
- Department of Urology, Guangdong Key Laboratory of Clinical Molecular Medicine and Diagnostics, Guangzhou First People's Hospital, Guangzhou Medical University, People's Republic of China
| | - Jun-Chen Liu
- Center for Translational Cancer Research, Institute of Biosciences and Technology and College of Medicine, Texas A&M Health Science Center, Houston, TX, USA
| | - Wei-De Zhong
- Department of Urology, Guangdong Key Laboratory of Clinical Molecular Medicine and Diagnostics, Guangzhou First People's Hospital, Guangzhou Medical University, People's Republic of China; Guangdong Provincial Institute of Nephrology, Nanfang Hospital, Southern Medical University, People's Republic of China; Urology Key Laboratory of Guangdong Province, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, People's Republic of China
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11
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Wang X, Lee BT, Son A. Physical lysis only (PLO) methods suitable as rapid sample pretreatment for qPCR assay. Appl Microbiol Biotechnol 2014; 98:8719-28. [PMID: 25219535 DOI: 10.1007/s00253-014-6064-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2014] [Revised: 08/29/2014] [Accepted: 08/30/2014] [Indexed: 12/30/2022]
Abstract
Quantitative PCR (qPCR) enables rapid and sensitive gene quantification and is widely used in genomics, such as biological, medical, environmental, and food sciences. However, sample pretreatment requires the use of conventional DNA extraction kits which are time-consuming and labor intensive. In this study, we investigated four physical lysis only (PLO) methods which are rapid and could serve as alternatives to conventional DNA extraction kits. These PLO methods are bead mill, heating, sonication, and freeze-thaw. Using ethidium bromide-based assay, their performance was evaluated and compared. The effects of cell debris and its removal were also investigated. Bead mill method without cell debris removal appeared to yield the best qPCR results among the four PLO methods. In addition, bead mill method also performed better than conventional DNA extraction kits. It is probably due to the substantial loss of DNA material during the extensive purification of the conventional DNA extraction kits. The bead mill method has been demonstrated to successfully quantify 10(2) to 10(7) copies of the PAH-RHDα gene of Pseudomonas putida.
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Affiliation(s)
- Xiaofang Wang
- Department of Civil Engineering, Auburn University, Auburn, AL, 36849, USA
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12
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Teixeira JH, Silva PM, Reis RM, Moura IM, Marques S, Fonseca J, Monteiro LS, Bousbaa H. An overview of the spindle assembly checkpoint status in oral cancer. BIOMED RESEARCH INTERNATIONAL 2014; 2014:145289. [PMID: 24995269 PMCID: PMC4065761 DOI: 10.1155/2014/145289] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Accepted: 05/18/2014] [Indexed: 12/11/2022]
Abstract
Abnormal chromosome number, or aneuploidy, is a common feature of human solid tumors, including oral cancer. Deregulated spindle assembly checkpoint (SAC) is thought as one of the mechanisms that drive aneuploidy. In normal cells, SAC prevents anaphase onset until all chromosomes are correctly aligned at the metaphase plate thereby ensuring genomic stability. Significantly, the activity of this checkpoint is compromised in many cancers. While mutations are rather rare, many tumors show altered expression levels of SAC components. Genomic alterations such as aneuploidy indicate a high risk of oral cancer and cancer-related mortality, and the molecular basis of these alterations is largely unknown. Yet, our knowledge on the status of SAC components in oral cancer remains sparse. In this review, we address the state of our knowledge regarding the SAC defects and the underlying molecular mechanisms in oral cancer, and discuss their therapeutic relevance, focusing our analysis on the core components of SAC and its target Cdc20.
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Affiliation(s)
- José Henrique Teixeira
- CESPU, Instituto de Investigação e Formação Avançada em Ciências e Tecnologias da Saúde, Rua Central de Gandra 1317, 4585-116 Gandra, Portugal
| | - Patrícia Manuela Silva
- CESPU, Instituto de Investigação e Formação Avançada em Ciências e Tecnologias da Saúde, Rua Central de Gandra 1317, 4585-116 Gandra, Portugal
- Centre for Molecular and Structural Biomedicine, CBME/IBB, University of Algarve, 8005-139 Faro, Portugal
| | - Rita Margarida Reis
- CESPU, Instituto de Investigação e Formação Avançada em Ciências e Tecnologias da Saúde, Rua Central de Gandra 1317, 4585-116 Gandra, Portugal
| | - Inês Moranguinho Moura
- CESPU, Instituto de Investigação e Formação Avançada em Ciências e Tecnologias da Saúde, Rua Central de Gandra 1317, 4585-116 Gandra, Portugal
| | - Sandra Marques
- CESPU, Instituto de Investigação e Formação Avançada em Ciências e Tecnologias da Saúde, Rua Central de Gandra 1317, 4585-116 Gandra, Portugal
| | - Joana Fonseca
- CESPU, Instituto de Investigação e Formação Avançada em Ciências e Tecnologias da Saúde, Rua Central de Gandra 1317, 4585-116 Gandra, Portugal
| | - Luís Silva Monteiro
- CESPU, Instituto de Investigação e Formação Avançada em Ciências e Tecnologias da Saúde, Rua Central de Gandra 1317, 4585-116 Gandra, Portugal
| | - Hassan Bousbaa
- CESPU, Instituto de Investigação e Formação Avançada em Ciências e Tecnologias da Saúde, Rua Central de Gandra 1317, 4585-116 Gandra, Portugal
- Centro de Química Medicinal da Universidade do Porto (CEQUIMED-UP), Rua de Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal
- Centro Interdisciplinar de Investigação Marinha e Ambiental (CIIMAR/CIMAR), Universidade do Porto, Rua dos Bragas 289, 4050-123 Porto, Portugal
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13
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Cirak Y, Sarsik B, Cakar B, Sen S, Simsir A, Uslu R. Predictive and prognostic values of Tau and BubR1 protein in prostate cancer and their relationship to the Gleason score. Med Oncol 2013; 30:526. [PMID: 23475578 DOI: 10.1007/s12032-013-0526-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2012] [Accepted: 02/22/2013] [Indexed: 11/30/2022]
Abstract
The aim of this study is to detect the expression levels of spindle assembly checkpoint protein-BubR1 and microtubule-associated protein-Tau in human prostate cancer tissues of different Gleason score, and to test whether there is a relationship between their expression levels and clinicopathologic parameters including response to docetaxel treatment, Gleason score, and overall survival (OS). Moreover, to test whether Tau protein expressed in the cancerous prostate tissue is phosphorylated. Thirty patients who received at least three cycles docetaxel for metastatic castrate-resistant prostate cancer were included into the trial. The patients' formalin-fixed and paraffin-embedded prostate tissue specimens were retrospectively obtained from the pathology department archives of Ege University School of Medicine. The expression status of BubR1 protein was defined by immunohistochemical (IHC) using the anti-BubR1 antibody. The expression status of Tau protein was defined by IHC using the two types of Tau antibodies: anti-Tau-1 antibody (that recognizes Tau only in its dephosphorylated form) and anti-PHF-Tau antibody (that recognizes all isoforms of human Tau proteins independent of its phosphorylation status). The BubR1 and Tau were overexpressed in about 63 and 23 % of the study group, respectively. Tau overexpression was significantly associated with lower Gleason score. There was no significant association between the expression levels of BubR1 and Tau proteins, and docetaxel response. Reduced BubR1 expression was strongly associated with longer survival (P = 0.008), whereas Tau expression status did not effect survival. Moreover, the Tau expression of cancerous prostate tissue was highly dephosphorylated. In this clinicopathological study, our findings did not confirm the preclinical observations that low BubR1 and Tau expression confer selective sensitivity to microtubulisin drugs. Our data imply that reduced BubR1 expression was a predictor for longer OS, and the possibility that high Tau expression may be involved in better prognosis due to its relationship to the Gleason score. Furthermore, our data suggest that both Tau and BubR1 may be a promising prognostic marker rather than predictive marker in patients with prostate cancer.
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Affiliation(s)
- Yalcin Cirak
- Division of Medical Oncology, Tulay Aktas Oncology Hospital, School of Medicine, Ege Universtiy, Bornova, 35100 Izmir, Turkey.
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14
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Karess RE, Wassmann K, Rahmani Z. New insights into the role of BubR1 in mitosis and beyond. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2013; 306:223-73. [PMID: 24016527 DOI: 10.1016/b978-0-12-407694-5.00006-7] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
BubR1 is a critical component of the spindle assembly checkpoint, the surveillance mechanism that helps maintain the high fidelity of mitotic chromosome segregation by preventing cells from initiating anaphase if one or more kinetochores are not attached to the spindle. BubR1 also helps promote the establishment of stable kinetochore-microtubule attachments during prometaphase. In this chapter, we review the structure, functions, and regulation of BubR1 in these "classical roles" at the kinetochore. We discuss its recruitment to kinetochores, its assembly into the inhibitor of anaphase progression, and the importance of its posttranslational modifications. We also consider the evidence for its participation in other roles beyond mitosis, such as the meiosis-specific processes of recombination and prophase arrest of the first meiotic division, the cellular response to DNA damage, and in the regulation of centrosome and basal body function. Finally, studies are presented linking BubR1 dysfunction or misregulation to aging and human disease, particularly cancer.
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Affiliation(s)
- Roger E Karess
- Institut Jacques Monod, UMR 7592 CNRS, Université Paris Diderot-Paris 7, Paris, France.
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15
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Hu M, Liu Q, Song P, Zhan X, Luo M, Liu C, Yang D, Cai Y, Zhang F, Jiang F, Zhang Y, Tang M, Zuo G, Zhou L, Luo J, Shi Q, Weng Y. Abnormal expression of the mitotic checkpoint protein BubR1 contributes to the anti-microtubule drug resistance of esophageal squamous cell carcinoma cells. Oncol Rep 2012; 29:185-92. [PMID: 23128493 DOI: 10.3892/or.2012.2117] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2012] [Accepted: 10/15/2012] [Indexed: 11/05/2022] Open
Abstract
Esophageal cancer is a common malignancy with a high mortality rate. The lack of effective chemotherapy and a means to overcome drug resistance leads to the predictable failure of esophageal cancer treatment. Mitotic checkpoint proteins play a critical role in regulating the cell cycle and proliferation. Abnormal expression of the mitotic checkpoint protein BubR1 has been reported in several types of cancers. In this study, we investigated the role of BubR1 in conferring resistance of esophageal cancer cells to anti-microtubule drugs. Using quantitative real-time PCR analysis on 50 samples of paired esophageal squamous cell cancer (ESC) tissues and adjacent non-cancerous tissues, we found that 72% (36 of 50) of the analyzed ESC samples exhibited high expression levels of BubR1, which was also confirmed in ESC cell lines. ESC cells with high levels of BubR1 were less sensitive to the anti-microtubule drugs paclitaxel and nocodazole. Recombinant adenovirus-mediated enforced expression of BubR1 in relatively sensitive ESC cell lines resulted in increased resistance to paclitaxel. Conversely, RNAi-mediated knockdown of BubR1 restored ESC cell sensitivity to paclitaxel. Cell cycle analysis indicated that the sub-G1 population increased in the ESC cells with reduced BubR1 levels. Taken together, our results suggest that upregulation of BubR1 expression may be associated with ESC resistance to paclitaxel treatment. Thus, BubR1 may serve as a potential chemosensitizing target to overcome chemoresistance.
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Affiliation(s)
- Min Hu
- Key Laboratory of Diagnostic Medicine designated by The Chinese Ministry of Education and School of Diagnostic Medicine, Chongqing Medical University, Chongqing 400016, PR China
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16
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Ogden A, Rida PCG, Aneja R. Let's huddle to prevent a muddle: centrosome declustering as an attractive anticancer strategy. Cell Death Differ 2012; 19:1255-67. [PMID: 22653338 DOI: 10.1038/cdd.2012.61] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Nearly a century ago, cell biologists postulated that the chromosomal aberrations blighting cancer cells might be caused by a mysterious organelle-the centrosome-that had only just been discovered. For years, however, this enigmatic structure was neglected in oncologic investigations and has only recently reemerged as a key suspect in tumorigenesis. A majority of cancer cells, unlike healthy cells, possess an amplified centrosome complement, which they manage to coalesce neatly at two spindle poles during mitosis. This clustering mechanism permits the cell to form a pseudo-bipolar mitotic spindle for segregation of sister chromatids. On rare occasions this mechanism fails, resulting in declustered centrosomes and the assembly of a multipolar spindle. Spindle multipolarity consigns the cell to an almost certain fate of mitotic arrest or death. The catastrophic nature of multipolarity has attracted efforts to develop drugs that can induce declustering in cancer cells. Such chemotherapeutics would theoretically spare healthy cells, whose normal centrosome complement should preclude multipolar spindle formation. In search of the 'Holy Grail' of nontoxic, cancer cell-selective, and superiorly efficacious chemotherapy, research is underway to elucidate the underpinnings of centrosome clustering mechanisms. Here, we detail the progress made towards that end, highlighting seminal work and suggesting directions for future research, aimed at demystifying this riddling cellular tactic and exploiting it for chemotherapeutic purposes. We also propose a model to highlight the integral role of microtubule dynamicity and the delicate balance of forces on which cancer cells rely for effective centrosome clustering. Finally, we provide insights regarding how perturbation of this balance may pave an inroad for inducing lethal centrosome dispersal and death selectively in cancer cells.
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Affiliation(s)
- A Ogden
- Department of Biology, Georgia State University, Atlanta, 30303, USA
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17
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Barbosa J, Nascimento AV, Faria J, Silva P, Bousbaa H. The spindle assembly checkpoint: perspectives in tumorigenesis and cancer therapy. ACTA ACUST UNITED AC 2011. [DOI: 10.1007/s11515-011-1122-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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18
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HsMAD2 mRNA expression may be a predictor of sensitivity to paclitaxel and survival in neuroblastoma. Pediatr Surg Int 2011; 27:217-23. [PMID: 21046120 DOI: 10.1007/s00383-010-2780-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
PURPOSE We investigated the associations between hsMAD2 mRNA expression in tumor cells and sensitivity to paclitaxel or patient prognosis in neuroblastoma. METHODS Fifty-one formalin-fixed paraffin-embedded tumor samples were manually microdissected to collect tumor cells, and RNA was purified. Nineteen clinical samples of advanced neuroblastoma showed appropriate quality of the isolated RNA for real-time reverse transcription-polymerase chain reaction (RT-PCR) analyses. The hsMAD2 expression levels were determined by real-time RT-PCR in 4 neuroblastoma cell lines and 19 clinical samples. The sensitivity to paclitaxel was assessed by WST-8 colorimetric assays and flow cytometry. HsMAD2 expression of the clinical samples was investigated for its association with prognosis in advanced neuroblastoma patients. RESULTS There was a significant positive correlation between hsMAD2 mRNA expression and the sensitivity to paclitaxel in four neuroblastoma cell lines. High hsMAD2 expression may be correlated with paclitaxel-induced apoptosis. Kaplan-Meier survival curves were stratified by hsMAD2 expression using the median value as a cut-off point and analyzed for prognostic significance by the log-rank test (P = 0.0467). Furthermore, multivariate survival analysis revealed that only hsMAD2 expression had a significant impact on the overall survival rate. CONCLUSIONS Our results may warrant clinical application of paclitaxel in neuroblastoma treatment for poor prognosis patients.
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Rizzardi C, Torelli L, Barresi E, Schneider M, Canzonieri V, Biasotto M, Di Lenarda R, Melato M. BUBR1 expression in oral squamous cell carcinoma and its relationship to tumor stage and survival. Head Neck 2010; 33:727-33. [PMID: 21069850 DOI: 10.1002/hed.21532] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/21/2010] [Indexed: 11/11/2022] Open
Abstract
BACKGROUND Defects in the mitotic spindle checkpoint have been proposed to contribute to the chromosomal instability observed in human cancers, including oral squamous cell carcinoma (OSCC). BUBR1 is a key component of the spindle checkpoint, whose role in oral carcinogenesis still needs to be clarified. METHODS We have analyzed the expression of BUBR1 in 49 cases of OSCC by immunohistochemistry and compared the findings with clinicopathologic parameters, proliferative activity, and DNA ploidy. RESULTS BUBR1 was overexpressed in 11 cases (22.4%). Tumors with overexpression of BUBR1 were associated with a less advanced pathologic stage (p = .05) and showed longer survival periods (p = .38) but shorter recurrence-free survival periods (p = .13) than those without it. CONCLUSIONS Our data imply the possibility that BUBR1 may be involved in the progression of OSCC, and suggest that BUBR1 may be a promising prognostic marker in patients with OSCC.
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Affiliation(s)
- Clara Rizzardi
- Department of Pathology and Forensic Medicine, University of Trieste, Trieste, Italy.
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20
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Guo SR, Wang ZM, Zhang YQ, Lei L, Shi JM, Chen KM, Yu Z. In Vivo Evaluation of 5-Fluorouracil-Containing Self-Expandable Nitinol Stent in Rabbits: Efficiency in Long-Term Local Drug Delivery. J Pharm Sci 2010; 99:3009-18. [DOI: 10.1002/jps.22066] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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21
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Ando K, Kakeji Y, Kitao H, Iimori M, Zhao Y, Yoshida R, Oki E, Yoshinaga K, Matumoto T, Morita M, Sakaguchi Y, Maehara Y. High expression of BUBR1 is one of the factors for inducing DNA aneuploidy and progression in gastric cancer. Cancer Sci 2010; 101:639-45. [PMID: 20132214 PMCID: PMC11159402 DOI: 10.1111/j.1349-7006.2009.01457.x] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Gastric cancers show high frequency of DNA aneuploidy, a phenotype of chromosomal instability. It is suggested that the abnormal spindle assembly checkpoint is involved in DNA aneuploidy, but the underlying mechanism is still unclear. We studied the mechanism by assessing the expression of BUBR1 in gastric cancer. The DNA ploidy patterns of 116 gastric cancer samples obtained from the Department of Surgery and Science at Kyushu University Hospital were analyzed. Of those, DNA aneuploidy was seen in 70 (60.3%) cases of gastric cancer. The expression of BUBR1 was studied by immunohistochemistry in 181 gastric cancer samples and by real-time RT-PCR in several gastric cancer cell lines. Ninety-one (50.3%) cases had high expression of BUBR1 and those cases correlated significantly with DNA aneuploidy (P < 0.05). Also high expression of BUBR1 cases had significant correlation with deep invasion, lymph node metastasis, liver metastasis, and poor prognosis. In gastric cancer cell lines, high expression of BUBR1 had a significant relationship with DNA aneuploidy (P < 0.05). Then, gastric cancer cell lines MKN-28 and SNU-1 were transfected with full-length BUBR1 to observe the significance of the change in BUBR1 expression. Enforced expression of BUBR1 resulted in changes to the ploidy pattern and high Ki-67 expression. Collectively, our clinical and in vitro data indicate that high expression of BUBR1 may be one of causative factors for the induction of DNA aneuploidy and progression of gastric cancer.
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Affiliation(s)
- Koji Ando
- Department of Surgery, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
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Uemura N, Nakanishi Y, Kato H, Nagino M, Hirohashi S, Kondo T. Antibody-based proteomics for esophageal cancer: Identification of proteins in the nuclear factor-kappaB pathway and mitotic checkpoint. Cancer Sci 2009; 100:1612-22. [PMID: 19558549 PMCID: PMC11159346 DOI: 10.1111/j.1349-7006.2009.01230.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2009] [Revised: 05/12/2009] [Accepted: 05/18/2009] [Indexed: 11/28/2022] Open
Abstract
To identify the molecular background of esophageal cancer, we conducted a proteomics study using an antibody microarray consisting of 725 antibodies and surgical specimens from three cases. The microarray analysis identified 24 proteins with aberrant expression in esophageal cancer compared with the corresponding normal mucosa. The overexpression of 14 of the 24 proteins was validated by western blotting analysis of the same samples. These 14 proteins were examined by immunohistochemistry, in which nine proteins showed consistent results with those obtained by western blotting. Among the nine proteins, seven were localized in tumor cells, and two in infiltrating cells. The former included proteins associated with mitotic checkpoint control and the nuclear factor (NF)-kappaB pathway. Although mitotic checkpoint gene products (budding uninhibited by benzidazoles 1 homolog beta (BubR1) and mitotic arrest deficient-like 1 (Mad2)) have previously been reported to be involved in esophageal cancer, the association of NF-kappaB-activating kinase, caspase 10, and activator protein-1 with esophageal cancer has not been previously reported. These proteins play a key role in the NF-kappaB pathway, and NF-kappaB is a signal transduction factor that has emerged as an important modulator of altered gene programs and malignant phenotype in the development of cancer. The association of these proteins with esophageal cancer may indicate that mitotic checkpoint gene products and NF-kappaB play an important part in the carcinogenesis of esophageal cancer.
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Affiliation(s)
- Norihisa Uemura
- Proteome Bioinformatics Project, National Cancer Center Research Institute, Tokyo 104-0045, Japan
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