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Zhou X, Dong S, Zhou Y, He Z, Zhang Z, Liao L, Zou B, Zheng X, Peng K, Duan X. EMX2 inhibits clear cell renal cell carcinoma progress via modulating Akt/FOXO3a pathway. Mol Carcinog 2024; 63:951-961. [PMID: 38362840 DOI: 10.1002/mc.23700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 01/19/2024] [Accepted: 02/01/2024] [Indexed: 02/17/2024]
Abstract
Empty spiracles homeobox 2 (EMX2) is initially identified as a key transcription factor that plays an essential role in the regulation of neuronal development and some brain disorders. Recently, several studies emphasized that EMX2 could as a tumor suppressor, but its role in human clear cell renal cell carcinoma (ccRCC) remains unclear. In the present study, we investigated the role and underlying mechanism of EMX2 in the regulation of ccRCC progress. Our results demonstrated that EMX2 expression was markedly decreased in ccRCC tissues and cell lines, and low EMX2 expression predicted the poor prognosis of ccRCC patients. In addition, forced expression of EMX2 significantly inhibited the cell growth, migration, and invasion in vitro, as well as ccRCC tumor growth in nude mice, via, at least in part, regulating Akt/FOXO3a pathway. In detail, EMX2 could attenuate the phosphorylation levels of Akt and FOXO3a, and increase FOXO3a expression without affecting total Akt expression in vivo and in vitro. Meanwhile, shRNA-mediated knockdown of FOXO3a expression could obviously attenuate the effects of EMX2 on cell growth, migration, invasion, and tumor growth. Furthermore, EMX2 could significantly attenuate the interaction between Akt and FOXO3a. Taken together, our results demonstrated that EMX2 could inhibit ccRCC progress through, at least in part, modulating Akt/FOXO3a signaling pathway, thus representing a novel role and underlying mechanism of EMX2 in the regulation of ccRCC progress.
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Affiliation(s)
- Xiaofeng Zhou
- Department of Urology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
- Guangdong Key Laboratory of Urology, Guangzhou, China
- Guangdong Engineering Research Center of Urinary Minimally Invasive Surgery Robot and Intelligent Equipment, Guangzhou, China
- Guangzhou Institute of Urology, Guangzhou, China
| | - Sicheng Dong
- Department of Urology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
- Guangdong Key Laboratory of Urology, Guangzhou, China
- Guangdong Engineering Research Center of Urinary Minimally Invasive Surgery Robot and Intelligent Equipment, Guangzhou, China
- Guangzhou Institute of Urology, Guangzhou, China
| | - Yuhao Zhou
- Department of Urology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
- Guangdong Key Laboratory of Urology, Guangzhou, China
- Guangdong Engineering Research Center of Urinary Minimally Invasive Surgery Robot and Intelligent Equipment, Guangzhou, China
- Guangzhou Institute of Urology, Guangzhou, China
| | - Zhiqing He
- Department of Urology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
- Guangdong Key Laboratory of Urology, Guangzhou, China
- Guangdong Engineering Research Center of Urinary Minimally Invasive Surgery Robot and Intelligent Equipment, Guangzhou, China
- Guangzhou Institute of Urology, Guangzhou, China
| | - Zhixiong Zhang
- Department of Urology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
- Guangdong Key Laboratory of Urology, Guangzhou, China
- Guangdong Engineering Research Center of Urinary Minimally Invasive Surgery Robot and Intelligent Equipment, Guangzhou, China
- Guangzhou Institute of Urology, Guangzhou, China
| | - Liqiong Liao
- Department of Urology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
- Guangdong Key Laboratory of Urology, Guangzhou, China
- Guangdong Engineering Research Center of Urinary Minimally Invasive Surgery Robot and Intelligent Equipment, Guangzhou, China
- Guangzhou Institute of Urology, Guangzhou, China
| | - Bangyu Zou
- Department of Urology, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Xiaopeng Zheng
- Department of Urology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
- Guangdong Key Laboratory of Urology, Guangzhou, China
- Guangdong Engineering Research Center of Urinary Minimally Invasive Surgery Robot and Intelligent Equipment, Guangzhou, China
- Guangzhou Institute of Urology, Guangzhou, China
| | - Kaoqing Peng
- Department of Urology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
- Guangdong Key Laboratory of Urology, Guangzhou, China
- Guangdong Engineering Research Center of Urinary Minimally Invasive Surgery Robot and Intelligent Equipment, Guangzhou, China
- Guangzhou Institute of Urology, Guangzhou, China
| | - Xiaolu Duan
- Department of Urology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
- Guangdong Key Laboratory of Urology, Guangzhou, China
- Guangdong Engineering Research Center of Urinary Minimally Invasive Surgery Robot and Intelligent Equipment, Guangzhou, China
- Guangzhou Institute of Urology, Guangzhou, China
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Wen DS, Huang LC, Bu XY, He MK, Lai ZC, Du ZF, Huang YX, Kan A, Shi M. DNA methylation-activated full-length EMX1 facilitates metastasis through EMX1-EGFR-ERK axis in hepatocellular carcinoma. Cell Death Dis 2023; 14:769. [PMID: 38007497 PMCID: PMC10676392 DOI: 10.1038/s41419-023-06293-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 11/01/2023] [Accepted: 11/13/2023] [Indexed: 11/27/2023]
Abstract
Altered DNA methylation is a crucial epigenetic event in hepatocellular carcinoma (HCC) development and progression. Through methylation-transcriptomic analysis, we identified a set of sixty potential DNA methylation-based epidriver genes. In this set of genes, we focused on the hypermethylation of EMX1, which is frequently observed in hepatobiliary tumors. Despite of its frequent occurrence, the function of EMX1 remains largely unknown. By utilizing bisulfite-next-generation sequencing, we have detected EMX1 DNA hypermethylation on the gene body, which is positively correlated with EMX1 mRNA expression. Further analysis revealed that EMX1 mRNA terminal exon splicing in HCC generated two protein isoforms: EMX1 full length (EMX1-FL) and alternative terminal exon splicing isoform (EMX1-X1). Cellular functional assays demonstrated that gain-of-function EMX1-FL, but not EMX1-X1, induced HCC cells migration and invasion while silencing EMX1-FL inhibited HCC cells motility. This result was further validated by in vivo tumor metastasis models. Mechanistically, EMX1-FL bound to EGFR promoter, promoting EGFR transcription and activating EGFR-ERK signaling to trigger tumor metastasis. Therefore, EGFR may be a potential therapeutic target for EMX1-high expression HCC. Our work illuminated the crucial role of gene body hypermethylation-activated EMX1-FL in promoting tumorigenesis and metastasis in HCC. These findings pave the way for targeting the EMX1-EGFR axis in HCC tumorigenicity and metastasis.
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Affiliation(s)
- Dong-Sheng Wen
- Department of Hepatobiliary Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Guangzhou, 510060, P. R. China
| | - Li-Chang Huang
- Department of Hepatobiliary Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Guangzhou, 510060, P. R. China
| | - Xiao-Yun Bu
- Department of Colorectal Surgery, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, 410013, P. R. China
| | - Min-Ke He
- Department of Hepatobiliary Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Guangzhou, 510060, P. R. China
| | - Zhi-Cheng Lai
- Department of Hepatobiliary Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Guangzhou, 510060, P. R. China
| | - Ze-Feng Du
- Department of Hepatobiliary Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Guangzhou, 510060, P. R. China
| | - Ye-Xing Huang
- Department of Hepatobiliary Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Guangzhou, 510060, P. R. China
| | - Anna Kan
- Department of Hepatobiliary Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Guangzhou, 510060, P. R. China.
| | - Ming Shi
- Department of Hepatobiliary Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Guangzhou, 510060, P. R. China.
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Jiang Y, Chen S. Functional New Transcription Factors (TFs) Associated with Cervical Cancer. JOURNAL OF HEALTHCARE ENGINEERING 2022; 2022:8381559. [PMID: 35126951 PMCID: PMC8808228 DOI: 10.1155/2022/8381559] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Revised: 12/10/2021] [Accepted: 12/20/2021] [Indexed: 11/17/2022]
Abstract
The goal of this research was to find noval transcription factors (TFs) that are involved in cervical carcinogenesis. The Gene Expression Omnibus (GEO) database was utilized to analyze ten cervical cancer datasets using the Robust Rank Aggregation (RRA) technique. Survival and differential expression were validated using GEPIA (Gene Expression Profiling Interactive Analysis). The transcriptional regulatory network and putative targets were built using Cytoscape. A real-time PCR (quantitative real-time polymerase chain reaction) experiment was used to confirm the mRNA expression. Using public cervical cancer single-cell RNA-sequencing (scRNA-seq), bulk TCGA-CESC RNA-seq, and microarray datasets, coexpression correlations between putative targets and TFs were confirmed. After combining the results of 10 datasets, 8 TFs, including EMX2 (Empty Spiracles Homeobox 2), were chosen among 385 robust DEGs. In the normal female reproductive tract, EMX2 is extensively expressed, but it is reduced in cervical cancer. Overexpression EMX2 suppresses the proliferation of HeLa cells. 12 potential targets of EMX2 were selected. Our research has revealed evidence that EMX2 acted as a tumor suppressor in cervical cancer and PDZRN3 might be possible target of EMX2 in cervical cancer. It might be a therapeutic target in the future.
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Affiliation(s)
- Yicheng Jiang
- Department of Oncology, People's Hospital of Chongqing Hechuan, Chongqing, China
| | - Shi Chen
- Department of Oncology, Chengdu Jinniu District People's Hospital, Chengdu, Sichuan, China
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Jimenez-García MP, Lucena-Cacace A, Otero-Albiol D, Carnero A. Empty spiracles homeobox genes EMX1 and EMX2 regulate WNT pathway activation in sarcomagenesis. J Exp Clin Cancer Res 2021; 40:247. [PMID: 34364391 PMCID: PMC8348834 DOI: 10.1186/s13046-021-02048-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 07/16/2021] [Indexed: 11/10/2022] Open
Abstract
Background Sarcomas are a very heterogeneous group of tumors with intrinsic developmental programs derived from the cell of origin. This implies a functional hierarchy inside tumors governed by sarcoma stem cells. Therefore, genetic and/or epigenetic changes profoundly affect the biology of sarcoma tumor stem cells. EMX genes are proposed to be transcription factors that are involved in the sarcomagenesis process, regardless of the neural or mesodermal embryological sarcoma origin. It has been shown that EMX1 or EMX2 overexpression reduces tumorigenic properties, while reducing the levels of these genes enhances these properties. Furthermore, it has been shown that EMX genes decrease the expression of stem cell regulatory genes and the stem cell phenotype. Taken together, these results indicate that the EMX1 and EMX2 genes negatively regulate these tumor-remodeling populations or sarcoma stem cells, acting as tumor suppressors in sarcoma. Methods Bioinformatic analysis, quantitative mRNA and protein expression analysis, cell models of sarcoma by ectopic expression of EMX genes. By cell biology methods we measured tumorigenesis and populations enriched on stem cell phenotypes, either in vitro or in vivo. Results In this work, we showed that the canonical Wnt pathway is one of the mechanisms that explains the relationships of EMX1/EMX2 and stem cell genes in sarcoma. The Wnt-EMX1/EMX2 relationship was validated in silico with sarcoma patient datasets, in vitro in primary derived sarcoma cell lines, and in vivo. EMX expression was found to negatively regulate the Wnt pathway. In addition, the constitutive activation of the Wnt pathway revers to a more aggressive phenotype with stem cell properties, and stemness gene transcription increased even in the presence of EMX1 and/or EMX2 overexpression, establishing the relationship among the Wnt pathway, stem cell genes and the EMX transcription factors. Conclusions Our data showed that Empty Spiracles Homeobox Genes EMX1 and EMX2 represses WNT signalling and activation of WNT pathway bypass EMX-dependent stemness repression and induces sarcomagenesis. These results also suggest the relevance of the Wnt/b-catenin/stemness axis as a therapeutic target in sarcoma. Supplementary Information The online version contains supplementary material available at 10.1186/s13046-021-02048-9.
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Affiliation(s)
- Manuel Pedro Jimenez-García
- Instituto de Biomedicina de Sevilla (IBIS), Hospital Universitario Virgen del Rocío, Universidad de Sevilla, Consejo Superior de Investigaciones Científicas, Sevilla, Spain.,CIBER de Cancer, IS Carlos III, Madrid, Spain
| | - Antonio Lucena-Cacace
- Present address: Department of Cell Growth and Differentiation, Center for iPS Cell Research and Application, Kyoto University, Kyoto, Japan
| | - Daniel Otero-Albiol
- Instituto de Biomedicina de Sevilla (IBIS), Hospital Universitario Virgen del Rocío, Universidad de Sevilla, Consejo Superior de Investigaciones Científicas, Sevilla, Spain.,CIBER de Cancer, IS Carlos III, Madrid, Spain
| | - Amancio Carnero
- Instituto de Biomedicina de Sevilla (IBIS), Hospital Universitario Virgen del Rocío, Universidad de Sevilla, Consejo Superior de Investigaciones Científicas, Sevilla, Spain. .,CIBER de Cancer, IS Carlos III, Madrid, Spain. .,Instituto de Biomedicina de Sevilla/HUVR/CSIC, Hospital Universitario Virgen del Rocío, Avda. Manuel Siurot s/n, 41013, Sevilla, Spain.
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Kozłowska J, Kolenda T, Poter P, Sobocińska J, Guglas K, Stasiak M, Bliźniak R, Teresiak A, Lamperska K. Long Intergenic Non-Coding RNAs in HNSCC: From "Junk DNA" to Important Prognostic Factor. Cancers (Basel) 2021; 13:2949. [PMID: 34204634 PMCID: PMC8231241 DOI: 10.3390/cancers13122949] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 06/08/2021] [Accepted: 06/09/2021] [Indexed: 12/24/2022] Open
Abstract
Head and neck squamous cell carcinoma is one of the most common and fatal cancers worldwide. Even a multimodal approach consisting of standard chemo- and radiotherapy along with surgical resection is only effective in approximately 50% of the cases. The rest of the patients develop a relapse of the disease and acquire resistance to treatment. Especially this group of individuals needs novel, personalized, targeted therapy. The first step to discovering such solutions is to investigate the tumor microenvironment, thus understanding the role and mechanism of the function of coding and non-coding sequences of the human genome. In recent years, RNA molecules gained great interest when the complex character of their impact on our biology allowed them to come out of the shadows of the "junk DNA" label. Furthermore, long non-coding RNAs (lncRNA), specifically the intergenic subgroup (lincRNA), are one of the most aberrantly expressed in several malignancies, which makes them particularly promising future diagnostic biomarkers and therapeutic targets. This review contains characteristics of known and validated lincRNAs in HNSCC, such as XIST, MALAT, HOTAIR, HOTTIP, lincRNA-p21, LINC02487, LINC02195, LINC00668, LINC00519, LINC00511, LINC00460, LINC00312, and LINC00052, with a description of their prognostic abilities. Even though much work remains to be done, lincRNAs are important factors in cancer biology that will become valuable biomarkers of tumor stage, outcome prognosis, and contribution to personalized medicine.
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Affiliation(s)
- Joanna Kozłowska
- Laboratory of Cancer Genetics, Greater Poland Cancer Centre, Garbary 15, 61-866 Poznan, Poland; (T.K.); (J.S.); (K.G.); (M.S.); (R.B.); (A.T.)
- Research and Implementation Unit, Greater Poland Cancer Centre, Garbary 15, 61-866 Poznan, Poland;
| | - Tomasz Kolenda
- Laboratory of Cancer Genetics, Greater Poland Cancer Centre, Garbary 15, 61-866 Poznan, Poland; (T.K.); (J.S.); (K.G.); (M.S.); (R.B.); (A.T.)
- Research and Implementation Unit, Greater Poland Cancer Centre, Garbary 15, 61-866 Poznan, Poland;
- Department of Cancer Immunology, Chair of Medical Biotechnology, Poznan University of Medical Sciences, 8 Rokietnicka Street, 60-806 Poznan, Poland
| | - Paulina Poter
- Research and Implementation Unit, Greater Poland Cancer Centre, Garbary 15, 61-866 Poznan, Poland;
- Department of Oncologic Pathology and Prophylaxis, Poznan University of Medical Sciences, Greater Poland Cancer Centere, Garbary 15, 61-866 Poznan, Poland
- Department of Pathology, Pomeranian Medical University, Rybacka 1, 70-204 Szczecin, Poland
| | - Joanna Sobocińska
- Laboratory of Cancer Genetics, Greater Poland Cancer Centre, Garbary 15, 61-866 Poznan, Poland; (T.K.); (J.S.); (K.G.); (M.S.); (R.B.); (A.T.)
- Research and Implementation Unit, Greater Poland Cancer Centre, Garbary 15, 61-866 Poznan, Poland;
- Department of Cancer Immunology, Chair of Medical Biotechnology, Poznan University of Medical Sciences, 8 Rokietnicka Street, 60-806 Poznan, Poland
| | - Kacper Guglas
- Laboratory of Cancer Genetics, Greater Poland Cancer Centre, Garbary 15, 61-866 Poznan, Poland; (T.K.); (J.S.); (K.G.); (M.S.); (R.B.); (A.T.)
- Research and Implementation Unit, Greater Poland Cancer Centre, Garbary 15, 61-866 Poznan, Poland;
- Postgraduate School of Molecular Medicine, Medical University of Warsaw, ul. Zwirki 61 and ul. Wigury, 02-091 Warsaw, Poland
| | - Maciej Stasiak
- Laboratory of Cancer Genetics, Greater Poland Cancer Centre, Garbary 15, 61-866 Poznan, Poland; (T.K.); (J.S.); (K.G.); (M.S.); (R.B.); (A.T.)
- Research and Implementation Unit, Greater Poland Cancer Centre, Garbary 15, 61-866 Poznan, Poland;
| | - Renata Bliźniak
- Laboratory of Cancer Genetics, Greater Poland Cancer Centre, Garbary 15, 61-866 Poznan, Poland; (T.K.); (J.S.); (K.G.); (M.S.); (R.B.); (A.T.)
- Research and Implementation Unit, Greater Poland Cancer Centre, Garbary 15, 61-866 Poznan, Poland;
| | - Anna Teresiak
- Laboratory of Cancer Genetics, Greater Poland Cancer Centre, Garbary 15, 61-866 Poznan, Poland; (T.K.); (J.S.); (K.G.); (M.S.); (R.B.); (A.T.)
- Research and Implementation Unit, Greater Poland Cancer Centre, Garbary 15, 61-866 Poznan, Poland;
| | - Katarzyna Lamperska
- Laboratory of Cancer Genetics, Greater Poland Cancer Centre, Garbary 15, 61-866 Poznan, Poland; (T.K.); (J.S.); (K.G.); (M.S.); (R.B.); (A.T.)
- Research and Implementation Unit, Greater Poland Cancer Centre, Garbary 15, 61-866 Poznan, Poland;
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Jimenez-García MP, Lucena-Cacace A, Otero-Albiol D, Carnero A. Regulation of sarcomagenesis by the empty spiracles homeobox genes EMX1 and EMX2. Cell Death Dis 2021; 12:515. [PMID: 34016958 PMCID: PMC8137939 DOI: 10.1038/s41419-021-03801-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 05/03/2021] [Accepted: 05/03/2021] [Indexed: 02/07/2023]
Abstract
The EMX (Empty Spiracles Homeobox) genes EMX1 and EMX2 are two homeodomain gene members of the EMX family of transcription factors involved in the regulation of various biological processes, such as cell proliferation, migration, and differentiation, during brain development and neural crest migration. They play a role in the specification of positional identity, the proliferation of neural stem cells, and the differentiation of certain neuronal cell phenotypes. In general, they act as transcription factors in early embryogenesis and neuroembryogenesis from metazoans to higher vertebrates. The EMX1 and EMX2's potential as tumor suppressor genes has been suggested in some cancers. Our work showed that EMX1/EMX2 act as tumor suppressors in sarcomas by repressing the activity of stem cell regulatory genes (OCT4, SOX2, KLF4, MYC, NANOG, NES, and PROM1). EMX protein downregulation, therefore, induced the malignance and stemness of cells both in vitro and in vivo. In murine knockout (KO) models lacking Emx genes, 3MC-induced sarcomas were more aggressive and infiltrative, had a greater capacity for tumor self-renewal, and had higher stem cell gene expression and nestin expression than those in wild-type models. These results showing that EMX genes acted as stemness regulators were reproduced in different subtypes of sarcoma. Therefore, it is possible that the EMX genes could have a generalized behavior regulating proliferation of neural crest-derived progenitors. Together, these results indicate that the EMX1 and EMX2 genes negatively regulate these tumor-altering populations or cancer stem cells, acting as tumor suppressors in sarcoma.
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Affiliation(s)
- Manuel Pedro Jimenez-García
- grid.411109.c0000 0000 9542 1158Instituto de Biomedicina de Sevilla (IBIS), Hospital Universitario Virgen del Rocío, Universidad de Sevilla, Consejo Superior de Investigaciones Científicas, Sevilla, Spain ,CIBER de Cancer, IS Carlos III, Madrid, Spain
| | - Antonio Lucena-Cacace
- grid.258799.80000 0004 0372 2033Department of Cell Growth and Differentiation, Center for iPS Cell Research and Application, Kyoto University, Kyoto, Japan
| | - Daniel Otero-Albiol
- grid.411109.c0000 0000 9542 1158Instituto de Biomedicina de Sevilla (IBIS), Hospital Universitario Virgen del Rocío, Universidad de Sevilla, Consejo Superior de Investigaciones Científicas, Sevilla, Spain ,CIBER de Cancer, IS Carlos III, Madrid, Spain
| | - Amancio Carnero
- grid.411109.c0000 0000 9542 1158Instituto de Biomedicina de Sevilla (IBIS), Hospital Universitario Virgen del Rocío, Universidad de Sevilla, Consejo Superior de Investigaciones Científicas, Sevilla, Spain ,CIBER de Cancer, IS Carlos III, Madrid, Spain
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Che J, Wang J, Li H, Zhen H, Shang K, Yang Y, Cao B. Decreased expression of Dlg5 is associated with a poor prognosis and epithelial-mesenchymal transition in squamous cell lung cancer. J Thorac Dis 2021; 13:3115-3125. [PMID: 34164202 PMCID: PMC8182517 DOI: 10.21037/jtd-21-752] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Background Discs large homolog 5 (Dlg5) is a newly discovered member of the membrane-associated guanylate kinase superfamily (MAGUK) that is involved in several important processes, including the maintenance of epithelial cell polarity, cell proliferation control, and cell migration and invasion. Decreased expression of Dlg5 has been reported in malignancies arising from different organs. In the present study, we analyzed Dlg5 expression and its prognostic value in squamous cell lung cancer (SqCLC). Methods Tumor tissue and adjacent normal tissue sections were collected from 98 patients with SqCLC. The expression levels of Dlg5 and epithelial-mesenchymal transition (EMT) biomarkers in the tissue sections were examined by immunohistochemistry and western blot. Results There were 80 males and 18 females in the study cohort. Patients at pathological stages I and IIIA accounted for 64.3% and 35.7% of the cohort, respectively. Western blot showed that Dlg5 expression differed between SqCLC and healthy tissues. Western blot also revealed low Dlg5 expression to be associated with low E-cadherin expression and high vimentin expression, which was consistent with the findings of immunohistochemical staining. Dlg5 expression was significantly correlated with lymph node (LN) metastasis (P=0.001) and disease recurrence (P<0.001), as well as with E-cadherin and vimentin expression (P=0.025 and P=0.001, respectively). Univariate analysis showed that overall survival was significantly correlated with the tumor-node-metastasis (P<0.001) and T (P=0.001) stages, LN metastasis (P<0.001), Dig5 expression (P<0.001), β-catenin expression (P=0.004), and vimentin expression (P=0.002). Patients with overexpression of Dlg5 and β-catenin had a more favorable prognosis than those without. Multivariate analysis revealed that tumor-node-metastasis stage [hazard ratio (HR) =2.124; 95% confidence interval (CI), 1.195–3.777; P=0.010], Dlg5 expression (HR =0.548; 95% CI, 0.313–0.959; P=0.035), β-catenin expression (HR =0.545; 95% CI, 0.312–0.953; P=0.033), and vimentin expression (HR =1.850; 95% CI, 1.050–3.258; P=0.033) could all independently predict the overall survival of patients with SqCLC. Conclusions Dlg5 is an important player in EMT which may have potential predictive value for SqCLC prognosis after surgery.
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Affiliation(s)
- Juanjuan Che
- Department of Oncology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Jing Wang
- Department of Oncology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Huihui Li
- Department of Oncology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Hongchao Zhen
- Department of Oncology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Kun Shang
- Department of Oncology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Yan Yang
- Department of Pathology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Bangwei Cao
- Department of Oncology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
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Gu Y, Feng C, Liu T, Zhang B, Yang L. The downregulation of lncRNA EMX2OS might independently predict shorter recurrence-free survival of classical papillary thyroid cancer. PLoS One 2018; 13:e0209338. [PMID: 30576338 PMCID: PMC6303026 DOI: 10.1371/journal.pone.0209338] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Accepted: 12/04/2018] [Indexed: 11/23/2022] Open
Abstract
Homeobox protein Emx2 is a transcription factor that is encoded by the EMX2 gene. In this study, using data from the Cancer Genome Atlas-Thyroid Cancer (TCGA-THCA), we aimed to examine the expression profile of EMX2 and its antisense transcript EMX2OS in papillary thyroid cancer (PTC), their prognostic value and potential regulatory networks. Results showed that in the three variants of PTC, EMX2 was significantly downregulated in classical PTC, while EMX2OS were significantly downregulated in follicular and classical PTC, compared with adjacent normal tissues. Kaplan-Meier survival curves showed that EMX2 and EMX2OS expression was not related to RFS in follicular PTC. In comparison, the high EMX2 or EMX2OS group were associated with better RFS compared with their respective low expression group in classical PTC (p = 0.007 and 0.004 respectively). Correlation analysis showed that EMX2 and EMX2OS were highly co-expressed in PTC tissues (Spearman’s r = 0.83). By performing stepwise regression, we found that EMX2OS was better than EMX2 in predicting RFS in classical PTC. Multivariate analysis confirmed that high EMX2OS expression was an independent indicator of favorable RFS in classical PTC (HR: 0.239, 95%CI: 0.100 = 0.569, p = 0.001), after adjustment of pathological stages and residual tumors. By performing in silico analysis, we found that the genes co-expressed with EMX2 or EMX2OS were highly overlapped. KEGG pathway analysis showed that these genes were enriched in the ECM-receptor interaction, focal adhesion, and PI3K-Akt signaling, protein digestion and absorption and proteoglycans in cancer pathways, which are closely related to cancer initiation and progression. Based on the findings, we infer that decreased EMX2OS expression might be a valuable prognostic biomarker of unfavorable RFS in classical PTC.
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Affiliation(s)
- Yi Gu
- Department of Vascular and Thyroid Surgery, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
| | - Chao Feng
- Department of Vascular and Thyroid Surgery, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
| | - Tong Liu
- Department of Vascular and Thyroid Surgery, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
| | - Bowei Zhang
- Department of Vascular and Thyroid Surgery, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
| | - Lan Yang
- Department of Anatomy, Histology and Embryology, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
- * E-mail:
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9
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Shi L, Li Y, Yu T, Wang Z, Zhou C, Xing W, Xu G, Tong B, Zheng Y, Zhou J, Huang P. Predictable Resistance and Overall Survival of Gemcitabine/Cisplatin by Platelet Activation Index in Non-Small Cell Lung Cancer. Med Sci Monit 2018; 24:8655-8668. [PMID: 30498189 PMCID: PMC6284361 DOI: 10.12659/msm.911125] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Background Gemcitabine/cisplatin (GP) resistance displays a negative role in treating advanced and metastatic non-small cell lung cancer (NSCLC). Several studies found that the association existed between platelets and cancer antigen 125 (CA125) with anticancer drugs. But the exact correlation between GP resistance and platelet activation index remains poorly understood. Material/Methods Pre-chemotherapy platelet activation index and CA125 were retrospectively evaluated in 169 advanced and metastatic NSCLC patients. All variables were screened by chi-square test and then evaluated by log-rank test. Survival curves were generated by Kaplan-Meier analysis. Univariate and multivariate survival analysis were performed by using Cox proportional hazards model. Results The overall rate of GP resistance for NSCLC patients was 72.19%. Mean platelet volume (MPV) and plateletcrit (PCT) are negative predictors of GP resistance adenocarcinoma [Odds ratio (OR): 5.81, 95% confidence interval (CI): 1.082–31.195, P=0.004] and squamous cell carcinoma (PCT: R: 3.517, 95% CI: 1.087–11.387, P=0.036), respectively. But both were an independent factor associated with overall survival (OS). Moreover, only CA125 was a dependent factor associated with OS for squamous cell carcinoma [OS: hazard ratio (HR): 1.741, 95% CI: 1.002–3.024, P=0.049; GP resistance: OR: 4.862, 95% CI: 1.437–16.448, P=0.011]. Conclusions Platelet activation index will be a potential marker for predicting GP resistance. Besides, CA125 ≥16.9 could be used as a potential marker for predicting GP resistance and OS, which was more sensitive than CA125 ≥35 for squamous cell carcinoma.
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Affiliation(s)
- Liang Shi
- Zhejiang Cancer Hospital, Hangzhou, Zhejiang, China (mainland)
| | - Yiming Li
- Zhejiang Provincial Key Laboratory of Anti-Cancer Drug Research, Institute of Drug Metabolism and Drug Analysis, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, Zhejiang, China (mainland)
| | - Tingting Yu
- Xihu District Hangzhou SanDu Town Community Health Service Center, Hangzhou, Zhejiang, China (mainland)
| | - Zeng Wang
- Zhejiang Cancer Hospital, Hangzhou, Zhejiang, China (mainland)
| | - Chenxi Zhou
- Zhejiang Cancer Hospital, Hangzhou, Zhejiang, China (mainland)
| | - Wenxiu Xing
- Zhejiang Cancer Hospital, Hangzhou, Zhejiang, China (mainland)
| | - Gaoqi Xu
- Zhejiang Cancer Hospital, Hangzhou, Zhejiang, China (mainland)
| | - BingLei Tong
- Cell-Land Biological Technology, Hangzhou, Zhejiang, China (mainland)
| | - Yingchao Zheng
- Pharmacy College, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China (mainland)
| | - Jie Zhou
- Zhejiang Provincial Key Laboratory of Anti-Cancer Drug Research, Institute of Drug Metabolism and Drug Analysis, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, Zhejiang, China (mainland)
| | - Ping Huang
- Zhejiang Cancer Hospital, Hangzhou, Zhejiang, China (mainland)
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10
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Che J, Yue D, Zhang B, Zhang H, Huo Y, Gao L, Zhen H, Yang Y, Cao B. Claudin-3 Inhibits Lung Squamous Cell Carcinoma Cell Epithelial-mesenchymal Transition and Invasion via Suppression of the Wnt/β-catenin Signaling Pathway. Int J Med Sci 2018; 15:339-351. [PMID: 29511369 PMCID: PMC5835704 DOI: 10.7150/ijms.22927] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Accepted: 12/15/2017] [Indexed: 12/15/2022] Open
Abstract
Altered expression of claudin-3 (CLDN3), a key cytoskeletal structural protein of the tight junctions in the epithelium, is associated with the development and metastasis of various human cancers. CLDN3 expression has been shown to be significantly associated with the prognosis of lung squamous cell carcinoma (SqCC). This study investigated the role of CLDN3 in inhibiting lung SqCC cell migration and invasion as well as the underlying molecular mechanisms. The CLDN3 levels were assessed between 20 paired lung SqCC tissues and adjacent normal tissues using quantitative real-time polymerase chain reaction (qRT-PCR) and western blot. The ectopic CLDN3 overexpression or knockdown was generated by using a plasmid carrying CLDN3 cDNA or shRNA, respectively. CLDN3 expression was significantly reduced in lung SqCC tissues vs. the adjacent normal tissues. The ectopic CLDN3 overexpression markedly inhibited the migration, invasion, and epithelial-mesenchymal transition (EMT) of lung cancer H520 cells, whereas CLDN3 knockdown had an inverse effect on SK-MES-1 cells. However, cell viability and plate colony formation assays showed that both CLDN3 knockdown and overexpression did not affect SqCC cell proliferation. Both tissue and cell data revealed that CLDN3 expression was significantly associated with the expression of the EMT biomarkers E-cadherin and Vimentin. Furthermore, CLDN3-modulated EMT and expression of the EMT markers were through regulation of the Wnt/β-catenin signaling pathway. In conclusion, this study identified reduced CLDN3 expression in lung SqCC tissues, which was associated with the progression and metastasis of lung SqCC and was attributed to EMT by activation of the Wnt pathway. Thus, CLDN3 could be further evaluated as a novel biomarker for predicting the prognosis of lung SqCC and as a target for the treatment of lung SqCC in the future.
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Affiliation(s)
- Juanjuan Che
- Department of Oncology, Beijing Friendship Hospital, Capital Medical University, Beijing, P.R. China
| | - Dongsheng Yue
- Department of Lung Cancer, Lung Cancer Center, Tianjin Medical University Cancer Institute and Hospital, Tianjin, P.R. China
| | - Bin Zhang
- Department of Lung Cancer, Lung Cancer Center, Tianjin Medical University Cancer Institute and Hospital, Tianjin, P.R. China
| | - Hua Zhang
- Department of Lung Cancer, Lung Cancer Center, Tianjin Medical University Cancer Institute and Hospital, Tianjin, P.R. China
| | - Yansong Huo
- Department of Lung Cancer, Lung Cancer Center, Tianjin Medical University Cancer Institute and Hospital, Tianjin, P.R. China
| | - Liuwei Gao
- Department of Lung Cancer, Lung Cancer Center, Tianjin Medical University Cancer Institute and Hospital, Tianjin, P.R. China
| | - Hongchao Zhen
- Department of Oncology, Beijing Friendship Hospital, Capital Medical University, Beijing, P.R. China
| | - Yan Yang
- Department of Pathology, Beijing Friendship Hospital, Capital Medical University, Beijing, P.R. China
| | - Bangwei Cao
- Department of Oncology, Beijing Friendship Hospital, Capital Medical University, Beijing, P.R. China
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11
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Aykut B, Ochs M, Radhakrishnan P, Brill A, Höcker H, Schwarz S, Weissinger D, Kehm R, Kulu Y, Ulrich A, Schneider M. EMX2 gene expression predicts liver metastasis and survival in colorectal cancer. BMC Cancer 2017; 17:555. [PMID: 28830374 PMCID: PMC5568393 DOI: 10.1186/s12885-017-3556-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Accepted: 08/15/2017] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND The Empty Spiracles Homeobox (EMX-) 2 gene has been associated with regulation of growth and differentiation in neuronal development. While recent studies provide evidence that EMX2 regulates tumorigenesis of various solid tumors, its role in colorectal cancer remains unknown. We aimed to assess the prognostic significance of EMX2 expression in stage III colorectal adenocarcinoma. METHODS Expression levels of EMX2 in human colorectal cancer and adjacent mucosa were assessed by qRT-PCR technology, and results were correlated with clinical and survival data. siRNA-mediated knockdown and adenoviral delivery-mediated overexpression of EMX2 were performed in order to investigate its effects on the migration of colorectal cancer cells in vitro. RESULTS Compared to corresponding healthy mucosa, colorectal tumor samples had decreased EMX2 expression levels. Furthermore, EMX2 down-regulation in colorectal cancer tissue was associated with distant metastasis (M1) and impaired overall patient survival. In vitro knockdown of EMX2 resulted in increased tumor cell migration. Conversely, overexpression of EMX2 led to an inhibition of tumor cell migration. CONCLUSIONS EMX2 is frequently down-regulated in human colorectal cancer, and down-regulation of EMX2 is a prognostic marker for disease-free and overall survival. EMX2 might thus represent a promising therapeutic target in colorectal cancer.
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Affiliation(s)
- Berk Aykut
- Department of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg University Hospital, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany
| | - Markus Ochs
- Department of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg University Hospital, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany
| | - Praveen Radhakrishnan
- Department of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg University Hospital, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany
| | - Adrian Brill
- Department of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg University Hospital, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany
| | - Hermine Höcker
- Department of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg University Hospital, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany
| | - Sandra Schwarz
- Department of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg University Hospital, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany
| | - Daniel Weissinger
- Department of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg University Hospital, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany
| | - Roland Kehm
- Department of Biotechnology, University of Heidelberg, Heidelberg, Germany
| | - Yakup Kulu
- Department of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg University Hospital, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany
| | - Alexis Ulrich
- Department of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg University Hospital, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany
| | - Martin Schneider
- Department of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg University Hospital, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany.
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12
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Graumann R, Di Capua GA, Oyarzún JE, Vásquez MA, Liao C, Brañes JA, Roa I, Casanello P, Corvalán AH, Owen GI, Delgado I, Zangemeister-Wittke U, Ziegler A. Expression of teneurins is associated with tumor differentiation and patient survival in ovarian cancer. PLoS One 2017; 12:e0177244. [PMID: 28472127 PMCID: PMC5417686 DOI: 10.1371/journal.pone.0177244] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Accepted: 04/24/2017] [Indexed: 11/29/2022] Open
Abstract
Teneurins are a family of highly conserved pair-rule proteins involved in morphogenesis and development of the central nervous system. Their function in adult tissues and in disease is largely unknown. Recent evidence suggests a role for dysregulated expression of Teneurins in human tumors, but systematic investigations are missing. Here, we investigated Teneurin-2 and Teneurin-4 expression in various cancer cell lines and in ovarian tumor tissues. Teneurin-2 and Teneurin-4 were expressed in most of the breast cancer cell lines tested. Teneurin-4 was also detected in ovarian cancer cell lines, and throughout ovarian tumors and normal ovary tissue. Ovarian tumors with low Teneurin-4 expression showed less differentiated phenotypes and these patients had shorter mean overall survival. Similarly, Teneurin-2 expression correlated with overall survival as well, especially in patients with serous tumors. In the various cell lines, 5-Aza-cytidine-induced changes in DNA methylation did not alter expression of Teneurin-2 and Teneurin-4, despite the existence of predicted CpG islands in both genes. Interestingly, however, we found evidence for the control of Teneurin-2 expression by the oncogenic growth factor FGF8. Furthermore, we identified multiple transcript splicing variants for Teneurin-2 and Teneurin-4, indicating complex gene expression patterns in malignant cells. Finally, downregulation of Teneurin-4 expression using siRNA caused a cell-type dependent increase in proliferation and resistance to cisplatin. Altogether, our data suggest that low Teneurin-4 expression provides a growth advantage to cancer cells and marks an undifferentiated state characterized by increased drug resistance and clinical aggressiveness. We conclude that Teneurin-2 and Teneurin-4 expression levels could be of prognostic value in ovarian cancer.
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Affiliation(s)
- Rebecca Graumann
- Center for Genetics and Genomics, Faculty of Medicine, Clínica Alemana-Universidad del Desarrollo, Santiago, Chile
| | - Gabriella A. Di Capua
- Center for Genetics and Genomics, Faculty of Medicine, Clínica Alemana-Universidad del Desarrollo, Santiago, Chile
| | - Juan E. Oyarzún
- Center for Genetics and Genomics, Faculty of Medicine, Clínica Alemana-Universidad del Desarrollo, Santiago, Chile
| | - Marcos A. Vásquez
- Center for Genetics and Genomics, Faculty of Medicine, Clínica Alemana-Universidad del Desarrollo, Santiago, Chile
| | - Christine Liao
- Center for Genetics and Genomics, Faculty of Medicine, Clínica Alemana-Universidad del Desarrollo, Santiago, Chile
| | - Jorge A. Brañes
- Division of Obstetrics and Gynecology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Iván Roa
- Division of Pathology, Clínica Alemana de Santiago, Santiago, Chile
| | - Paola Casanello
- Perinatology Research Laboratory, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Alejandro H. Corvalán
- Advanced Center for Chronic Diseases (ACCDiS), and UC-Center for Investigational Oncology (CITO), Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Gareth I. Owen
- Advanced Center for Chronic Diseases (ACCDiS), and UC-Center for Investigational Oncology (CITO), Pontificia Universidad Católica de Chile, Santiago, Chile
- Department of Physiology, Faculty of Biological Sciences, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Iris Delgado
- Center for Epidemiology and Health Policies, Faculty of Medicine, Clínica Alemana-Universidad del Desarrollo, Santiago, Chile
| | | | - Annemarie Ziegler
- Center for Genetics and Genomics, Faculty of Medicine, Clínica Alemana-Universidad del Desarrollo, Santiago, Chile
- * E-mail:
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13
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Xiao J, Lu X, Chen X, Zou Y, Liu A, Li W, He B, He S, Chen Q. Eight potential biomarkers for distinguishing between lung adenocarcinoma and squamous cell carcinoma. Oncotarget 2017; 8:71759-71771. [PMID: 29069744 PMCID: PMC5641087 DOI: 10.18632/oncotarget.17606] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2017] [Accepted: 03/29/2017] [Indexed: 11/25/2022] Open
Abstract
Lung adenocarcinoma (LADC) and squamous cell carcinoma (LSCC) are the most common non-small cell lung cancer histological phenotypes. Accurate diagnosis distinguishing between these two lung cancer types has clinical significance. For this study, we analyzed four Gene Expression Omnibus (GEO) datasets (GSE28571, GSE37745, GSE43580, and GSE50081). We then imported the datasets into the Gene-Cloud of Biotechnology Information online platform to identify genes differentially expressed in LADC and LSCC. We identified DSG3 (desmoglein 3), KRT5 (keratin 5), KRT6A (keratin 6A), KRT6B (keratin 6B), NKX2-1 (NK2 homeobox 1), SFTA2 (surfactant associated 2), SFTA3 (surfactant associated 3), and TMC5 (transmembrane channel-like 5) as potential biomarkers for distinguishing between LADC and LSCC. Receiver operating characteristic curve analysis suggested that KRT5 had the highest diagnostic value for discriminating between these two cancer types. Using the PrognoScan online survival analysis tool and the Kaplan-Meier Plotter, we found that high KRT6A or KRT6B levels, or low NKX2-1, SFTA3, or TMC5 levels correlated with unfavorable prognoses in LADC patients. Further studies will be needed to verify our findings in additional patient samples, and to elucidate the mechanisms of action of these potential biomarkers in non-small cell lung cancer.
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Affiliation(s)
- Jian Xiao
- Department of Geriatrics, Respiratory Medicine, Xiangya Hospital of Central South University, Changsha 410008, China
| | - Xiaoxiao Lu
- Department of Geriatrics, Respiratory Medicine, Xiangya Hospital of Central South University, Changsha 410008, China
| | - Xi Chen
- Department of Respiratory Medicine, Xiangya Hospital of Central South University, Changsha 410008, China
| | - Yong Zou
- Department of Geriatrics, Respiratory Medicine, Xiangya Hospital of Central South University, Changsha 410008, China
| | - Aibin Liu
- Department of Geriatrics, Xiangya Hospital of Central South University, Changsha 410008, China
| | - Wei Li
- Department of Geriatrics, Clinical Laboratory, Xiangya Hospital of Central South University, Changsha 410008, China
| | - Bixiu He
- Department of Geriatrics, Respiratory Medicine, Xiangya Hospital of Central South University, Changsha 410008, China
| | - Shuya He
- Department of Biochemistry & Biology, University of South China, Hengyang 421001, China
| | - Qiong Chen
- Department of Geriatrics, Respiratory Medicine, Xiangya Hospital of Central South University, Changsha 410008, China
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14
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Zhang Y, Cao G, Yuan QG, Li JH, Yang WB. Empty Spiracles Homeobox 2 (EMX2) Inhibits the Invasion and Tumorigenesis in Colorectal Cancer Cells. Oncol Res 2017; 25:537-544. [PMID: 27712600 PMCID: PMC7841084 DOI: 10.3727/096504016x14756640150695] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Empty spiracles homeobox 2 (EMX2) is a homeodomain-containing transcription factor that plays an essential role in tumorigenesis. However, to the best of our knowledge, the role of EMX2 in human colorectal cancer (CRC) is still unclear. Thus, the aim of this study was to investigate the expression and role of EMX2 in CRC. Our results demonstrated that the expression of EMX2 was greatly decreased in CRC tissues and cell lines. Overexpression of EMX2 significantly inhibited the proliferation in vitro and CRC tumor growth in nude mice. In addition, EMX2 also inhibited the migration and invasion of CRC cells. Mechanically, overexpression of EMX2 downregulated the expression levels of β-catenin, cyclin D1, and c-Myc in CRC cells. Taken together, our study demonstrates that EMX2 inhibits proliferation and tumorigenesis through inactivation of the Wnt/β-catenin pathway in CRC cells. Therefore, EMX2 may be a potential therapeutic target for the treatment of CRC.
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Affiliation(s)
- Yan Zhang
- Department of General Surgery, The Second Affiliated Hospital of Medical School, Xi’an Jiaotong University, Xi’an, P.R. China
| | - Gang Cao
- Department of General Surgery, The Second Affiliated Hospital of Medical School, Xi’an Jiaotong University, Xi’an, P.R. China
| | - Qing-gong Yuan
- Department of General Surgery, The Second Affiliated Hospital of Medical School, Xi’an Jiaotong University, Xi’an, P.R. China
| | - Jun-hui Li
- Department of General Surgery, The Second Affiliated Hospital of Medical School, Xi’an Jiaotong University, Xi’an, P.R. China
| | - Wen-Bin Yang
- Department of General Surgery, The Second Affiliated Hospital of Medical School, Xi’an Jiaotong University, Xi’an, P.R. China
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15
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KIAA1522 is a novel prognostic biomarker in patients with non-small cell lung cancer. Sci Rep 2016; 6:24786. [PMID: 27098511 PMCID: PMC4838871 DOI: 10.1038/srep24786] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Accepted: 04/04/2016] [Indexed: 12/21/2022] Open
Abstract
Nowadays, no robust biomarkers have been applied to clinical practice to provide prognostic evaluation of non-small cell lung cancer (NSCLC). This study aims to identify new potential prognostic biomarkers for NSCLC. In the present work, KIAA1522 is screened out from two independent GEO datasets as aberrantly up-regulated gene in NSCLC tissues. We evaluate KIAA1522 expression immunohistochemically in 583 NSCLC tissue samples and paired non-tumor tissues. KIAA1522 displays stronger staining in NSCLC cases than in adjacent normal lung tissues. Importantly, patients with KIAA1522 overexpression had a significantly shorter overall survival compared to those with low expression (P < 0.00001). Multivariate Cox regression analyses show that KIAA1522 is an independent prognostic indicator, even for early-stage NSCLCs (P = 0.00025, HR = 2.317, 95%CI: 1.477–3.635). We also found that high expression of KIAA1522 is a significant risk factor for decreased overall survival of the patients who received platinum-based chemotherapy. Gene set enrichment analysis (GSEA) and functional studies reveal that KIAA1522 is associated with oncogenic KRAS pathways. Taken together, high expression of KIAA1522 can be used as an independent biomarker for predication of poor survival and platinum-resistance of NSCLC patients, and aberrant KIAA1522 might be a new target for the therapy of the disease.
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