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Pan Y, Jin X, Xu H, Hong J, Li F, Luo T, Zeng J. Developing a prognostic model using machine learning for disulfidptosis related lncRNA in lung adenocarcinoma. Sci Rep 2024; 14:13113. [PMID: 38849442 PMCID: PMC11161591 DOI: 10.1038/s41598-024-63949-1] [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: 10/02/2023] [Accepted: 06/03/2024] [Indexed: 06/09/2024] Open
Abstract
Disulfidptosis represents a novel cell death mechanism triggered by disulfide stress, with potential implications for advancements in cancer treatments. Although emerging evidence highlights the critical regulatory roles of long non-coding RNAs (lncRNAs) in the pathobiology of lung adenocarcinoma (LUAD), research into lncRNAs specifically associated with disulfidptosis in LUAD, termed disulfidptosis-related lncRNAs (DRLs), remains insufficiently explored. Using The Cancer Genome Atlas (TCGA)-LUAD dataset, we implemented ten machine learning techniques, resulting in 101 distinct model configurations. To assess the predictive accuracy of our model, we employed both the concordance index (C-index) and receiver operating characteristic (ROC) curve analyses. For a deeper understanding of the underlying biological pathways, we referred to the Kyoto Encyclopedia of Genes and Genomes (KEGG) and Gene Ontology (GO) for functional enrichment analysis. Moreover, we explored differences in the tumor microenvironment between high-risk and low-risk patient cohorts. Additionally, we thoroughly assessed the prognostic value of the DRLs signatures in predicting treatment outcomes. The Kaplan-Meier (KM) survival analysis demonstrated a significant difference in overall survival (OS) between the high-risk and low-risk cohorts (p < 0.001). The prognostic model showed robust performance, with an area under the ROC curve exceeding 0.75 at one year and maintaining a value above 0.72 in the two and three-year follow-ups. Further research identified variations in tumor mutational burden (TMB) and differential responses to immunotherapies and chemotherapies. Our validation, using three GEO datasets (GSE31210, GSE30219, and GSE50081), revealed that the C-index exceeded 0.67 for GSE31210 and GSE30219. Significant differences in disease-free survival (DFS) and OS were observed across all validation cohorts among different risk groups. The prognostic model offers potential as a molecular biomarker for LUAD prognosis.
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Affiliation(s)
- Yang Pan
- Department of Pulmonary Surgery, Zhejiang Cancer Hospital, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, China
- Postgraduate Training Base Alliance of Wenzhou Medical University (Zhejiang Cancer Hospital), Hangzhou, China
| | - Xuanhong Jin
- Department of Medical Oncology, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Haoting Xu
- Department of Pulmonary Surgery, Zhejiang Cancer Hospital, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, China
- Postgraduate Training Base Alliance of Wenzhou Medical University (Zhejiang Cancer Hospital), Hangzhou, China
| | - Jiandong Hong
- Department of Pulmonary Surgery, Zhejiang Cancer Hospital, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, China
- School of Medicine, Shaoxing University, Shaoxing, China
| | - Feng Li
- Department of Pulmonary Surgery, Zhejiang Cancer Hospital, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, China.
| | - Taobo Luo
- Department of Pulmonary Surgery, Zhejiang Cancer Hospital, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, China.
| | - Jian Zeng
- Department of Pulmonary Surgery, Zhejiang Cancer Hospital, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, China.
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Wang B, Huang L, Ye S, Zheng Z, Liao S. Identification of Novel Prognostic Biomarkers That are Associated with Immune Microenvironment Based on GABA-Related Molecular Subtypes in Gastric Cancer. Pharmgenomics Pers Med 2023; 16:665-679. [PMID: 37405024 PMCID: PMC10315139 DOI: 10.2147/pgpm.s411862] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Accepted: 06/10/2023] [Indexed: 07/06/2023] Open
Abstract
Background Gamma-aminobutyric acid (GABA) plays an important role in tumorigenesis and progression. Despite this, the role of Reactome GABA receptor activation (RGRA) on gastric cancer (GC) remains unclear. This study was intended to screen RGRA-related genes in GC and investigate their prognostic value. Methods GSVA algorithm was used to assess the score of RGRA. GC patients were divided into two subtypes based on the median score of RGRA. GSEA, functional enrichment analysis, and immune infiltration analysis were performed between the two subgroups. Then, differentially expressed analysis, and weighted gene co-expression network analysis (WGCNA) were used to identify RGRA-related genes. The prognosis and expression of core genes were analyzed and validated in the TCGA database, GEO database, and clinical samples. ssGSEA and ESTIMATE algorithms were used to assess the immune cell infiltration in the low- and high-core genes subgroups. Results High-RGRA subtype had a poor prognosis and activated immune-related pathways, as well as an activated immune microenvironment. ATP1A2 was identified to be the core gene. The expression of ATP1A2 was associated with the overall survival rate and tumor stage, and its expression was down-regulated in GC patients. Furthermore, ATP1A2 expression was positively correlated with the level of immune cells, including B cells, CD8 T cells, cytotoxic cells, DC, eosinophils, macrophages, mast cells, NK cells, and T cells. Conclusion Two RGRA-related molecular subtypes were identified that could predict the outcome in GC patients. ATP1A2 was a core immunoregulatory gene and was associated with prognosis and immune cell infiltration in GC.
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Affiliation(s)
- Beibei Wang
- Department of Gastroenterology and Hepatology, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, 510080, People’s Republic of China
| | - Linlin Huang
- Department of Gastroenterology and Hepatology, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, 510080, People’s Republic of China
| | - Shanliang Ye
- Department of Gastroenterology and Hepatology, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, 510080, People’s Republic of China
| | - Zhongwen Zheng
- Department of Gastroenterology and Hepatology, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, 510080, People’s Republic of China
| | - Shanying Liao
- Department of Gastroenterology and Hepatology, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, 510080, People’s Republic of China
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Liu Y, Gu R, Gao M, Wei Y, Shi Y, Wang X, Gu Y, Gu X, Zhang H. Emerging role of substance and energy metabolism associated with neuroendocrine regulation in tumor cells. Front Endocrinol (Lausanne) 2023; 14:1126271. [PMID: 37051193 PMCID: PMC10084767 DOI: 10.3389/fendo.2023.1126271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Accepted: 02/07/2023] [Indexed: 03/29/2023] Open
Abstract
Cancer is the second most common cause of mortality in the world. One of the unresolved difficult pathological mechanism issues in malignant tumors is the imbalance of substance and energy metabolism of tumor cells. Cells maintain life through energy metabolism, and normal cells provide energy through mitochondrial oxidative phosphorylation to generate ATP, while tumor cells demonstrate different energy metabolism. Neuroendocrine control is crucial for tumor cells' consumption of nutrients and energy. As a result, better combinatorial therapeutic approaches will be made possible by knowing the neuroendocrine regulating mechanism of how the neuroendocrine system can fuel cellular metabolism. Here, the basics of metabolic remodeling in tumor cells for nutrients and metabolites are presented, showing how the neuroendocrine system regulates substance and energy metabolic pathways to satisfy tumor cell proliferation and survival requirements. In this context, targeting neuroendocrine regulatory pathways in tumor cell metabolism can beneficially enhance or temper tumor cell metabolism and serve as promising alternatives to available treatments.
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Affiliation(s)
- Yingying Liu
- Institute for Immunology and School of Medicine, Tsinghua University, Beijing, China
- School of Chinese Medicine and School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Renjun Gu
- School of Chinese Medicine and School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Murong Gao
- Beijing Rehabilitation Hospital Affiliated to Capital Medical University, Beijing, China
| | - Yangwa Wei
- Department of Hepatobiliary Surgery, Hainan Provincial People’s Hospital, Haikou, China
| | - Yu Shi
- Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Xu Wang
- School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China
| | - Yihuang Gu
- School of Acupuncture and Tuina, School of Regimen and Rehabilitation, Nanjing University of Chinese Medicine, Nanjing, China
- The Second Hospital of Nanjing, Nanjing, China
- *Correspondence: Hongru Zhang, ; Xin Gu, ; Yihuang Gu,
| | - Xin Gu
- School of Chinese Medicine and School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, China
- *Correspondence: Hongru Zhang, ; Xin Gu, ; Yihuang Gu,
| | - Hongru Zhang
- School of Chinese Medicine and School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, China
- *Correspondence: Hongru Zhang, ; Xin Gu, ; Yihuang Gu,
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Cai W, Jing M, Wen J, Guo H, Xue Z. Epigenetic Alterations of DNA Methylation and miRNA Contribution to Lung Adenocarcinoma. Front Genet 2022; 13:817552. [PMID: 35711943 PMCID: PMC9194831 DOI: 10.3389/fgene.2022.817552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Accepted: 04/26/2022] [Indexed: 12/24/2022] Open
Abstract
This study focused on the epigenetic alterations of DNA methylation and miRNAs for lung adenocarcinoma (LUAD) diagnosis and treatment using bioinformatics analyses. DNA methylation data and mRNA and miRNA expression microarray data were obtained from The Cancer Genome Atlas (TCGA) database. The differentially methylated genes (DMGs), differentially expressed genes (DEGs), and differentially expressed miRNAs were analyzed by using the limma package. The DAVID database performed GO and KEGG pathway enrichment analyses. Using STRING and Cytoscape, we constructed the protein-protein interaction (PPI) network and achieved visualization. The online analysis tool CMap was used to identify potential small-molecule drugs for LUAD. In LUAD, 607 high miRNA-targeting downregulated genes and 925 low miRNA-targeting upregulated genes, as well as 284 hypermethylated low-expression genes and 315 hypomethylated high-expression genes, were obtained. They were mainly enriched in terms of pathways in cancer, neuroactive ligand-receptor interaction, cAMP signaling pathway, and cytosolic DNA-sensing pathway. In addition, 40 upregulated and 84 downregulated genes were regulated by both aberrant alternations of DNA methylation and miRNAs. Five small-molecule drugs were identified as a potential treatment for LUAD, and five hub genes (SLC2A1, PAX6, LEP, KLF4, and FGF10) were found in PPI, and two of them (SLC2A1 and KLF4) may be related to the prognosis of LUAD. In summary, our study identified a series of differentially expressed genes associated with epigenetic alterations of DNA methylation and miRNA in LUAD. Five small-molecule drugs and five hub genes may be promising drugs and targets for LUAD treatment.
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Affiliation(s)
- Wenhan Cai
- Medical School of Chinese PLA, Beijing, China
| | - Miao Jing
- Medical School of Chinese PLA, Beijing, China
| | - Jiaxin Wen
- Department of Thoracic Surgery, The First Medical Centre, Chinese PLA General Hospital, Beijing, China
| | - Hua Guo
- Medical School of Chinese PLA, Beijing, China
| | - Zhiqiang Xue
- Department of Thoracic Surgery, The First Medical Centre, Chinese PLA General Hospital, Beijing, China
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Liu B, Guo H, Li L, Geng Q, Zhao N, Tan Y, Nie Z, Ouyang G, Lu A, Lu C. Serum metabolomics analysis of deficiency pattern and excess pattern in patients with rheumatoid arthritis. Chin Med 2022; 17:71. [PMID: 35706052 PMCID: PMC9199155 DOI: 10.1186/s13020-022-00632-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 06/02/2022] [Indexed: 11/23/2022] Open
Abstract
Background Rheumatoid arthritis (RA) is a chronic and refractory autoimmune disease. Deficiency pattern (DP) and excess pattern (EP), as crucial types of Chinese medicine pattern diagnoses published by International Classification of Diseases 11th Revision (ICD-11), could provide new strategies for RA diagnosis. However, the biological basis of DP and EP of RA is not explicit. Methods 19 female RA DP patients, 41 female RA EP patients and 30 female healthy participants were included in the study. The serums of participants were collected and analyzed by metabolomics based on ultra-performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry to profile metabolic characteristics of RA DP and EP. Furthermore, bioinformatics analysis results were obtained by using Ingenuity Pathway Analysis (IPA) and statistical analysis was performed by SAS version 9.4 for further identification of potential biomarkers. Results Serum metabolic profiling revealed 25 and 24 differential metabolites in RA DP and EP respectively, and 19 metabolites were common to RA DP and EP. Compared with DP group, L-Homocysteic acid, LysoPE(P-16:0/0:0), N(omega)-Hydroxyarginine and LysoPC(16:0/0:0) decreased (P < 0.05), and Pyruvic acid, D-Ribose, Gamma-Glutamylserine, PE(22:0/24:1(15Z)), Inosinic acid increased (P < 0.05) in EP group. Menawhile, S-Nitrosoglutathione, 5-Thymidylic acid, SN38 glucuronide, PE(22:0/24:0), PC(24:0/24:1(15Z)) and Bisdiphosphoinositol tetrakisphosphate increased significantly in DP group compared to EP group (P < 0.05). For the unique metabolites, bioinformatics analysis results showed that 5-Methoxytryptamine involved in Melatonin Degradation II and Superpathway of Melatonin Degradation is the key metabolite to RA DP. Meanwhile, GABA is the key metabolite in EP group, which involved in Glutamate Dependent Acid Resistance, GABA Receptor Signaling, Glutamate Degradation III (via 4-aminobutyrate) and 4-aminobutyrate Degradation I. Bioinformatics analysis between unique metabolites of RA DP and EP groups with human target genes for RA showed that 5-methoxytryptamine and LysoPC(18:1(9Z)/0:0), the unique metabolites of RA DP, might participate in colorectal cancer metastasis signaling, tumor microenvironment pathway, apoptosis signaling, MYC mediated apoptosis signaling, erythropoietin signaling pathway and LXR/RXR activation. Simultaneously, GABA, LysoPA(18:1(9Z)/0:0) and L-Targinine, the unique metabolites of RA EP, might participate in neuroinflammation signaling pathway, osteoarthritis pathway, glucocorticoid receptor signaling, ILK signaling, IL-17 signaling and HIF1α signaling. Conclusions The study indicates that serum metabolomics preliminarily revealed the biological basis of RA DP and EP. 5-methoxytryptamine, LysoPC(18:1(9Z)/0:0) and GABA, LysoPA(18:1(9Z)/0:0), L-Targinine might be the predictors to distinguish the DP and EP of RA respectively. These interesting results provide thoughts for further study of traditional medicine patterns of ICD-11. It also contributes to provide strategy for personalized precision treatment of RA and further validation is needed.
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Affiliation(s)
- Bin Liu
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Dongcheng District, Beijing, 100700, China
| | - Hongtao Guo
- The First Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou, China
| | - Li Li
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Dongcheng District, Beijing, 100700, China
| | - Qi Geng
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Dongcheng District, Beijing, 100700, China
| | - Ning Zhao
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Dongcheng District, Beijing, 100700, China
| | - Yong Tan
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Dongcheng District, Beijing, 100700, China
| | - Zhixing Nie
- Shanghai Guanghua Hospital of Integreted Tranditional Chinese and Western Medicine, Shanghai, China
| | - Guilin Ouyang
- Shanghai Guanghua Hospital of Integreted Tranditional Chinese and Western Medicine, Shanghai, China
| | - Aiping Lu
- Shanghai Guanghua Hospital of Integreted Tranditional Chinese and Western Medicine, Shanghai, China. .,School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China.
| | - Cheng Lu
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Dongcheng District, Beijing, 100700, China.
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Calaf GM, Crispin LA, Roy D, Aguayo F, Muñoz JP, Bleak TC. Gene Signatures Induced by Ionizing Radiation as Prognostic Tools in an In Vitro Experimental Breast Cancer Model. Cancers (Basel) 2021; 13:4571. [PMID: 34572798 PMCID: PMC8465284 DOI: 10.3390/cancers13184571] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 09/02/2021] [Accepted: 09/07/2021] [Indexed: 11/16/2022] Open
Abstract
This study aimed to analyze the expression of genes involved in radiation, using an Affymetrix system with an in vitro experimental breast cancer model developed by the combined treatment of low doses of high linear energy transfer (LET) radiation α particle radiation and estrogen yielding different stages in a malignantly transformed breast cancer cell model called Alpha model. Altered expression of different molecules was detected in the non-tumorigenic Alpha3, a malignant cell line transformed only by radiation and originally derived from the parental MCF-10F human cell line; that was compared with the Alpha 5 cell line, another cell line exposed to radiation and subsequently grown in the presence 17β-estradiol. This Alpha5, a tumorigenic cell line, originated the Tumor2 cell line. It can be summarized that the Alpha 3 cell line was characterized by greater gene expression of ATM and IL7R than control, Alpha5, and Tumor2 cell lines, it presented higher selenoprotein gene expression than control and Tumor2; epsin 3 gene expression was higher than control; stefin A gene expression was higher than Alpha5; and metallothionein was higher than control and Tumor2 cell line. Therefore, radiation, independently of estrogen, induced increased ATM, IL7R, selenoprotein, GABA receptor, epsin, stefin, and metallothioneins gene expression in comparison with the control. Results showed important findings of genes involved in cancers of the breast, lung, nervous system, and others. Most genes analyzed in these studies can be used for new prognostic tools and future therapies since they affect cancer progression and metastasis. Most of all, it was revealed that in the Alpha model, a breast cancer model developed by the authors, the cell line transformed only by radiation, independently of estrogen, was characterized by greater gene expression than other cell lines. Understanding the effect of radiotherapy in different cells will help us improve the clinical outcome of radiotherapies. Thus, gene signature has been demonstrated to be specific to tumor types, hence cell-dependency must be considered in future treatment planning. Molecular and clinical features affect the results of radiotherapy. Thus, using gene technology and molecular information is possible to improve therapies and reduction of side effects while providing new insights into breast cancer-related fields.
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Affiliation(s)
- Gloria M. Calaf
- Instituto de Alta Investigación, Universidad de Tarapacá, Arica 1000000, Chile; (L.A.C.); (J.P.M.); (T.C.B.)
- Center for Radiological Research, Columbia University Medical Center, New York, NY 10032, USA
| | - Leodan A. Crispin
- Instituto de Alta Investigación, Universidad de Tarapacá, Arica 1000000, Chile; (L.A.C.); (J.P.M.); (T.C.B.)
| | - Debasish Roy
- Department of Natural Sciences, Hostos College of the City University of New York, Bronx, NY 10451, USA;
| | - Francisco Aguayo
- Laboratorio Oncovirología, Programa de Virología, Facultad de Medicina, Instituto de Ciencias Biomédicas, Universidad de Chile, Santiago 8380000, Chile;
| | - Juan P. Muñoz
- Instituto de Alta Investigación, Universidad de Tarapacá, Arica 1000000, Chile; (L.A.C.); (J.P.M.); (T.C.B.)
| | - Tammy C. Bleak
- Instituto de Alta Investigación, Universidad de Tarapacá, Arica 1000000, Chile; (L.A.C.); (J.P.M.); (T.C.B.)
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Xu Y, Xu F, Lv Y, Wang S, Li J, Zhou C, Jiang J, Xie B, He F. A ceRNA-associated risk model predicts the poor prognosis for head and neck squamous cell carcinoma patients. Sci Rep 2021; 11:6374. [PMID: 33737696 PMCID: PMC7973582 DOI: 10.1038/s41598-021-86048-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Accepted: 03/09/2021] [Indexed: 02/06/2023] Open
Abstract
Head and neck squamous cell carcinoma (HNSCC) is one of the most malignant cancers with poor prognosis worldwide. Emerging evidence indicates that competing endogenous RNAs (ceRNAs) are involved in various diseases, however, the regulatory mechanisms of ceRNAs underlying HNSCC remain unclear. In this study, we retrieved differentially expressed long non-coding RNAs (DElncRNAs), messenger RNAs (DEmRNAs) and microRANs (DEmiRNAs) from The Cancer Genome Atlas database and constructed a ceRNA-based risk model in HNSCC by integrated bioinformatics approaches. Functional enrichment analyses showed that DEmRNAs might be involved in extracellular matrix related biological processes, and protein–protein interaction network further selected out prognostic genes, including MYL1 and ACTN2. Importantly, co-expressed RNAs identified by weighted co-expression gene network analysis constructed the ceRNA networks. Moreover, AC114730.3, AC136375.3, LAT and RYR3 were highly correlated to overall survival of HNSCC by Kaplan–Meier method and univariate Cox regression analysis, which were subsequently implemented multivariate Cox regression analysis to build the risk model. Our study provides a deeper understanding of ceRNAs on the regulatory mechanisms, which will facilitate the expansion of the roles on the ceRNAs in the tumorigenesis, development and treatment of HNSCC.
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Affiliation(s)
- Yuzi Xu
- Department of Oral Implantology and Prosthodontics, The Affiliated Hospital of Stomatology, School of Stomatology, Zhejiang University School of Medicine, and Key Laboratory of Oral Biomedical Research of Zhejiang Province, 395# Yanan Road, Hangzhou, 310006, Zhejiang, People's Republic of China
| | - Fengqin Xu
- The First Affiliated Hospital of Kangda College of Nanjing Medical University, The First People's Hospital of Lianyungang, The Affiliated Lianyungang Hospital of Xuzhou Medical University, Lianyungang, 222000, Jiangsu, People's Republic of China
| | - Yiming Lv
- Department of Colorectal Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, 310016, Zhejiang, People's Republic of China
| | - Siyuan Wang
- Department of Oral Implantology and Prosthodontics, The Affiliated Hospital of Stomatology, School of Stomatology, Zhejiang University School of Medicine, and Key Laboratory of Oral Biomedical Research of Zhejiang Province, 395# Yanan Road, Hangzhou, 310006, Zhejiang, People's Republic of China
| | - Jia Li
- Department of Oral Implantology and Prosthodontics, The Affiliated Hospital of Stomatology, School of Stomatology, Zhejiang University School of Medicine, and Key Laboratory of Oral Biomedical Research of Zhejiang Province, 395# Yanan Road, Hangzhou, 310006, Zhejiang, People's Republic of China
| | - Chuan Zhou
- Department of Oral Implantology and Prosthodontics, The Affiliated Hospital of Stomatology, School of Stomatology, Zhejiang University School of Medicine, and Key Laboratory of Oral Biomedical Research of Zhejiang Province, 395# Yanan Road, Hangzhou, 310006, Zhejiang, People's Republic of China
| | - Jimin Jiang
- Department of Oral Implantology and Prosthodontics, The Affiliated Hospital of Stomatology, School of Stomatology, Zhejiang University School of Medicine, and Key Laboratory of Oral Biomedical Research of Zhejiang Province, 395# Yanan Road, Hangzhou, 310006, Zhejiang, People's Republic of China
| | - Binbin Xie
- Department of Medical Oncology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, 3# East Qingchun Road, Hangzhou, 310016, Zhejiang, People's Republic of China.
| | - Fuming He
- Department of Oral Implantology and Prosthodontics, The Affiliated Hospital of Stomatology, School of Stomatology, Zhejiang University School of Medicine, and Key Laboratory of Oral Biomedical Research of Zhejiang Province, 395# Yanan Road, Hangzhou, 310006, Zhejiang, People's Republic of China.
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Jeong SB, Kim YB, Lee JW, Kim DH, Moon BH, Chang HH, Choi YH, Lee KW. Role of dietary gamma-aminobutyric acid in broiler chickens raised under high stocking density. ANIMAL NUTRITION (ZHONGGUO XU MU SHOU YI XUE HUI) 2020; 6:293-304. [PMID: 33005763 PMCID: PMC7503073 DOI: 10.1016/j.aninu.2020.03.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 11/17/2019] [Revised: 03/28/2020] [Accepted: 03/30/2020] [Indexed: 11/23/2022]
Abstract
The present study was conducted to evaluate the effects of dietary gamma-aminobutyric acid (GABA) in broiler chickens raised in high stocking density (HSD) on performance and physiological responses. A total of 900 male broiler chicks (Ross 308) at 1 d old were assigned in a 2 × 2 factorial arrangement to 4 treatments (10 replicates per treatment) with stocking density, 7.5 birds/m2 (low stocking density; LSD) or 15 birds/m2 (HSD), and dietary GABA, 0 or 100 mg/kg. Chickens raised in HSD exhibited a decrease in body weight gain in all phases (P < 0.05) and feed intake in starter and whole phases (P < 0.01), and an increase in feed conversion ratio in the finisher phase (P < 0.01) compared with LSD-raised chickens. However, dietary GABA did not affect growth performance nor interacted with stocking density on production variables. The HSD vs. LSD increased relative liver weight on d 35 whereas dietary GABA increased relative liver weight and decreased relative bursa weight on d 21. Both stocking density and dietary GABA affected yield and quality of breast and leg muscles. Dietary GABA increased (P < 0.05) width of tibia on d 35 and interacted (P = 0.054) with stocking density on breaking stocking density on d 35. The HSD vs. LSD group lowered (P < 0.05) feather coverage scores. Significant interaction between stocking density and GABA on surface temperature of shank on d 21 was noted (P = 0.024). Dietary GABA exhibited an opposite effect on the concentrations of cecal short-chain fatty acids depending on stocking density leading to a moderate to significant interaction. Stocking density decreased alpha-1-acid glycoprotein whereas dietary GABA decreased heterophil-to-lymphocyte ratio and corticosterone in blood or serum samples. Serum biochemical parameters were altered by stocking density or dietary GABA. It is concluded that dietary GABA alleviated stress indices including corticosterone and heterophil-to-lymphocyte ratio, but failed to reverse stocking density-induced growth depression.
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Affiliation(s)
- Su-Been Jeong
- Department of Animal Science and Technology, Konkuk University, Seoul, 05029, Republic of Korea
| | - Yoo Bhin Kim
- Department of Animal Science and Technology, Konkuk University, Seoul, 05029, Republic of Korea
| | - Jeong-Woo Lee
- Department of Animal Science and Technology, Konkuk University, Seoul, 05029, Republic of Korea
| | - Da-Hye Kim
- Department of Animal Science and Technology, Konkuk University, Seoul, 05029, Republic of Korea
| | | | - Hong-Hee Chang
- Department of Animal Science, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Yang-Ho Choi
- Department of Animal Science, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Kyung-Woo Lee
- Department of Animal Science and Technology, Konkuk University, Seoul, 05029, Republic of Korea
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Abstract
BACKGROUNDS Lung adenocarcinoma (LUAD) is one of the most common malignancies, and is a serious threat to human health. The aim of the present study was to assess potential biomarkers for the prognosis of LUAD through the analysis of gene expression microarrays. METHODS The gene expression data for GSE118370 was downloaded from the Gene Expression Omnibus (GEO) database. Differentially expressed genes (DEGs) between normal lung and LUAD samples were screened using the R language. The DAVID database was used to analyze the functions and pathways of DEGs. The STRING database was used to the map protein-protein interaction (PPI) networks, and these were visualized with the Cytoscape software. Finally, the prognostic analysis of the hub gene in the PPI network was performed using the Kaplan-Meier tool. RESULTS A total of 406 downregulated and 203 upregulated DEGs were identified. The GO analysis results revealed that downregulated DEGs were significantly enriched in angiogenesis, calcium ion binding and cell adhesion. The upregulated DEGs were significantly enriched in the extracellular matrix disassembly, collagen catabolic process, chemokine-mediated signaling pathway and endopeptidase inhibitor activity. The KEGG pathway analysis revealed that downregulated DEGs were enriched in neuroactive ligand-receptor interaction, hematopoietic cell lineage and vascular smooth muscle contraction, while upregulated DEGs were enriched in phototransduction. In addition, the top 10 hub genes and the most closely interacting modules of the top 3 proteins in the PPI network were screened. Finally, the independent prognostic value of each hub gene in LUAD patients was analyzed through the Kaplan-Meier plotter. Seven hub genes (ADCY4, S1PR1, FPR2, PPBP, NMU, PF4, and GCG) were closely correlated to overall survival time. CONCLUSION The discovery of these candidate genes and pathways reveals the etiology and molecular mechanisms of LUAD, providing ideas and guidance for the development of new therapeutic approaches to LUAD.
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10
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The Metabolic Interplay between Cancer and Other Diseases. Trends Cancer 2019; 5:809-821. [PMID: 31813458 DOI: 10.1016/j.trecan.2019.10.012] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 10/27/2019] [Accepted: 10/28/2019] [Indexed: 02/06/2023]
Abstract
Over the past decade, knowledge of cancer metabolism has expanded exponentially and has provided several clinically relevant targets for cancer therapy. Although these current approaches have shown promise, there are very few studies showing how seemingly unrelated metabolic processes in other diseases can readily occur in cancer. Moreover, the striking metabolic overlap between cancer and other diseases such as diabetes, cardiovascular, neurological, obesity, and aging has provided key therapeutic strategies that have even begun to be translated into clinical trials. These promising results necessitate consideration of the interconnected metabolic network while studying the metabolism of cancer. This review article discusses how cancer metabolism is intertwined with systemic metabolism and how knowledge from other diseases can help to broaden therapeutic opportunities for cancer.
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Pienkowska M, Choufani S, Turinsky AL, Guha T, Merino DM, Novokmet A, Brudno M, Weksberg R, Shlien A, Hawkins C, Bouffet E, Tabori U, Gilbertson R, Finlay JL, Jabado N, Thomas C, Sill M, Capper D, Hasselblatt M, Malkin D. DNA methylation signature is prognostic of choroid plexus tumor aggressiveness. Clin Epigenetics 2019; 11:117. [PMID: 31409384 PMCID: PMC6692938 DOI: 10.1186/s13148-019-0708-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Accepted: 07/22/2019] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Histological grading of choroid plexus tumors (CPTs) remains the best prognostic tool to distinguish between aggressive choroid plexus carcinoma (CPC) and the more benign choroid plexus papilloma (CPP) or atypical choroid plexus papilloma (aCPP); however, these distinctions can be challenging. Standard treatment of CPC is very aggressive and often leads to severe damage to the young child's brain. Therefore, it is crucial to distinguish between CPC and less aggressive entities (CPP or aCPP) to avoid unnecessary exposure of the young patient to neurotoxic therapy. To better stratify CPTs, we utilized DNA methylation (DNAm) to identify prognostic epigenetic biomarkers for CPCs. METHODS We obtained DNA methylation profiles of 34 CPTs using the HumanMethylation450 BeadChip from Illumina, and the data was analyzed using the Illumina Genome Studio analysis software. Validation of differentially methylated CpG sites chosen as biomarkers was performed using pyrosequencing analysis on additional 22 CPTs. Sensitivity testing of the CPC DNAm signature was performed on a replication cohort of 61 CPT tumors obtained from Neuropathology, University Hospital Münster, Germany. RESULTS Generated genome-wide DNAm profiles of CPTs showed significant differences in DNAm between CPCs and the CPPs or aCPPs. The prediction of clinical outcome could be improved by combining the DNAm profile with the mutational status of TP53. CPCs with homozygous TP53 mutations clustered as a group separate from those carrying a heterozygous TP53 mutation or CPCs with wild type TP53 (TP53-wt) and showed the worst survival outcome. Specific DNAm signatures for CPCs revealed AK1, PER2, and PLSCR4 as potential biomarkers for CPC that can be used to improve molecular stratification for diagnosis and treatment. CONCLUSIONS We demonstrate that combining specific DNAm signature for CPCs with histological approaches better differentiate aggressive tumors from those that are not life threatening. These findings have important implications for future prognostic risk prediction in clinical disease management.
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Affiliation(s)
- Malgorzata Pienkowska
- Genetics and Genome Biology Program, Hospital for Sick Children, PGCRL, 686 Bay Street, Toronto, Ontario M5G 0A4 Canada
| | - Sanaa Choufani
- Genetics and Genome Biology Program, Hospital for Sick Children, PGCRL, 686 Bay Street, Toronto, Ontario M5G 0A4 Canada
| | - Andrei L. Turinsky
- Genetics and Genome Biology Program, Hospital for Sick Children, PGCRL, 686 Bay Street, Toronto, Ontario M5G 0A4 Canada
- Center for Computational Medicine, Hospital for Sick Children, PGCRL, 686 Bay Street, Toronto, Ontario M5G 0A4 Canada
| | - Tanya Guha
- Genetics and Genome Biology Program, Hospital for Sick Children, PGCRL, 686 Bay Street, Toronto, Ontario M5G 0A4 Canada
| | - Diana M. Merino
- Friends of Cancer Research, 1800 M Street, NW, Suite 1050 South, Washington, DC 20036 USA
| | - Ana Novokmet
- Genetics and Genome Biology Program, Hospital for Sick Children, PGCRL, 686 Bay Street, Toronto, Ontario M5G 0A4 Canada
| | - Michael Brudno
- Genetics and Genome Biology Program, Hospital for Sick Children, PGCRL, 686 Bay Street, Toronto, Ontario M5G 0A4 Canada
- Center for Computational Medicine, Hospital for Sick Children, PGCRL, 686 Bay Street, Toronto, Ontario M5G 0A4 Canada
- Department of Computer Science, University of Toronto, 40 St. George Street, Toronto, Ontario M5S 2E4 Canada
| | - Rosanna Weksberg
- Genetics and Genome Biology Program, Hospital for Sick Children, PGCRL, 686 Bay Street, Toronto, Ontario M5G 0A4 Canada
- Division of Clinical and Metabolic Genetics, Hospital for Sick Children, 555 University Avenue, Toronto, Ontario M5G 1X8 Canada
- Department of Pediatrics, Hospital for Sick Children, 555 University Avenue, Toronto, Ontario M5G 1X8 Canada
| | - Adam Shlien
- Genetics and Genome Biology Program, Hospital for Sick Children, PGCRL, 686 Bay Street, Toronto, Ontario M5G 0A4 Canada
- Paediatric Laboratory Medicine, Hospital for Sick Children, 555 University Avenue, Toronto, Ontario M5G 1X8 Canada
| | - Cynthia Hawkins
- Genetics and Genome Biology Program, Hospital for Sick Children, PGCRL, 686 Bay Street, Toronto, Ontario M5G 0A4 Canada
- Paediatric Laboratory Medicine, Hospital for Sick Children, 555 University Avenue, Toronto, Ontario M5G 1X8 Canada
| | - Eric Bouffet
- Division of Hematology/Oncology, Hospital for Sick Children, 555 University Avenue, Toronto, Ontario M5G 1X8 Canada
- Department of Pediatrics, Hospital for Sick Children, 555 University Avenue, Toronto, Ontario M5G 1X8 Canada
| | - Uri Tabori
- Genetics and Genome Biology Program, Hospital for Sick Children, PGCRL, 686 Bay Street, Toronto, Ontario M5G 0A4 Canada
- Division of Hematology/Oncology, Hospital for Sick Children, 555 University Avenue, Toronto, Ontario M5G 1X8 Canada
- Department of Pediatrics, Hospital for Sick Children, 555 University Avenue, Toronto, Ontario M5G 1X8 Canada
| | - Richard Gilbertson
- Department of Oncology, Cambridge Cancer Center, Robinson Way, Cambridge, CB2 0RE England
| | - Jonathan L. Finlay
- Neuro-Oncology Program, Nationwide Children’s Hospital and The Ohio State University, 700 Children’s Dr, Columbus, OH 43205 USA
| | - Nada Jabado
- Division of Hematology/Oncology, Montreal Children’s Hospital of the McGill University Health Centre (RI-MUHC), 1001 Decarie Blvd, Montreal, Québec, H4A 3 J1 Canada
| | - Christian Thomas
- Institute of Neuropathology, University Hospital Münster, 48149 Münster, Germany
| | - Martin Sill
- Hopp Children’s Cancer Center at the NCT Heidelberg (KiTZ), Im Neuenheimer Feld 280, 69120 Heidelberg, Germany
- Division of Pediatric Neurooncology, German Cancer Research Center (DKFZ) and German Cancer Consortium (DKTK), Im Neuenheimer Feld 280, 69120 Heidelberg, Germany
| | - David Capper
- Charité Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Neuropathology, Charitéplatz 1, 10117 Berlin, Germany
- German Cancer Consortium (DKTK), Partner Site Berlin, Invalidenstrasse 80, 10117, Berlin, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120 Heidelberg, Germany
| | - Martin Hasselblatt
- Institute of Neuropathology, University Hospital Münster, 48149 Münster, Germany
| | - David Malkin
- Genetics and Genome Biology Program, Hospital for Sick Children, PGCRL, 686 Bay Street, Toronto, Ontario M5G 0A4 Canada
- Division of Hematology/Oncology, Hospital for Sick Children, 555 University Avenue, Toronto, Ontario M5G 1X8 Canada
- Department of Pediatrics, Hospital for Sick Children, 555 University Avenue, Toronto, Ontario M5G 1X8 Canada
- Department of Medical Biophysics, University of Toronto, Princess Margaret Cancer Research Tower, MaRS Centre, 101 College Street, Toronto, Ontario M5G 1 L7 Canada
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Di YZ, Han BS, Di JM, Liu WY, Tang Q. Role of the brain-gut axis in gastrointestinal cancer. World J Clin Cases 2019; 7:1554-1570. [PMID: 31367615 PMCID: PMC6658366 DOI: 10.12998/wjcc.v7.i13.1554] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2019] [Revised: 04/04/2019] [Accepted: 05/02/2019] [Indexed: 02/05/2023] Open
Abstract
Several studies have largely focused on the significant role of the nervous and immune systems in the process of tumorigenesis, including tumor growth, proliferation, apoptosis, and metastasis. The brain-gut-axis is a new paradigm in neuroscience, which describes the biochemical signaling between the gastrointestinal (GI) tract and the central nervous system. This axis may play a critical role in the tumorigenesis and development of GI cancers. Mechanistically, the bidirectional signal transmission of the brain-gut-axis is complex and remains to be elucidated. In this article, we review the current findings concerning the relationship between the brain-gut axis and GI cancer cells, focusing on the significant role of the brain-gut axis in the processes of tumor proliferation, invasion, apoptosis, autophagy, and metastasis. It appears that the brain might modulate GI cancer by two pathways: the anatomical nerve pathway and the neuroendocrine route. The simulation and inactivation of the central nervous, sympathetic, and parasympathetic nervous systems, or changes in the innervation of the GI tract might contribute to a higher incidence of GI cancers. In addition, neurotransmitters and neurotrophic factors can produce stimulatory or inhibitory effects in the progression of GI cancers. Insights into these mechanisms may lead to the discovery of potential prognostic and therapeutic targets.
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Affiliation(s)
- Yang-Zi Di
- Department of General Surgery, Shiyan Taihe Hospital, Hubei University of Medicine, Shiyan 442000, Hubei Province, China
| | - Bo-Sheng Han
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 443000, Hubei Province, China
| | - Jun-Mao Di
- Department of General Surgery, Shiyan Taihe Hospital, Hubei University of Medicine, Shiyan 442000, Hubei Province, China
| | - Wei-Yan Liu
- Department of General Surgery, Shiyan Taihe Hospital, Hubei University of Medicine, Shiyan 442000, Hubei Province, China
| | - Qiang Tang
- Department of General Surgery, Shiyan Taihe Hospital, Hubei University of Medicine, Shiyan 442000, Hubei Province, China
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Chung SI, Lee SC, Yi SJ, Kang MY. Antioxidative and antiproliferative activities of ethanol extracts from pigmented giant embryo rice ( Oryza sativa L. cv. Keunnunjami) before and after germination. Nutr Res Pract 2018; 12:365-370. [PMID: 30323903 PMCID: PMC6172168 DOI: 10.4162/nrp.2018.12.5.365] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 05/22/2018] [Accepted: 07/25/2018] [Indexed: 12/02/2022] Open
Abstract
BACKGROUND/OBJECTIVES Oxidative stress is a major cause of cancer. This study investigated the effects of the ethanol extracts from germinated and non-germinated Keunnunjami rice, a blackish-purple pigmented cultivar with giant embryo, on selected human cancer cell lines and on the antioxidant defense system of mice fed with a high-fat diet. MATERIALS/METHODS High fat-fed mice were orally administered with either distilled water (HF) or extracts (0.25%, w/w) from brown (B), germinated brown (GB), Keunnunjami (K), and germinated Keunnunjami (GK) rice. RESULTS In comparison with the brown rice extract, Keunnunjami extract showed higher anticancer effect against cervical and gastric cell lines but lower anticancer activity on liver and colon cancer cells. Mice from the HF group showed significantly higher lipid peroxidation and lower antioxidant enzyme activities than the control group. However, the oxidative stress induced by high-fat diet markedly decreased in B, GB, K, and GK groups as compared with the HF group. CONCLUSIONS Germination may be an effective method for improving the anticancer and antioxidative properties of Keunnunjami rice and extracts from germinated Keunnunjami rice may serve as a therapeutic agent against cervical and gastric cancers and oxidative damage.
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Affiliation(s)
- Soo Im Chung
- Department of Food Science and Nutrition, Brain Korea 21 Plus, Kyungpook National University, 80 Daehakro, Bukgu, Daegu 41566, Korea
| | - Sang Chul Lee
- School of Applied Biosciences, Kyungpook National University, Daegu 41566, Korea
| | - Seong Joon Yi
- College of Veterinary Medicine, Kyungpook National University, Daegu 41566, Korea
| | - Mi Young Kang
- Department of Food Science and Nutrition, Brain Korea 21 Plus, Kyungpook National University, 80 Daehakro, Bukgu, Daegu 41566, Korea
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Kanbara K, Otsuki Y, Watanabe M, Yokoe S, Mori Y, Asahi M, Neo M. GABA B receptor regulates proliferation in the high-grade chondrosarcoma cell line OUMS-27 via apoptotic pathways. BMC Cancer 2018. [PMID: 29514603 PMCID: PMC5842535 DOI: 10.1186/s12885-018-4149-4] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND High-grade chondrosarcoma, which has a high incidence of local recurrence and pulmonary metastasis despite surgical resection, is associated with poor prognosis. Therefore, new and effective adjuvant therapies are urgently required for this disease. Gamma-aminobutyric acid (GABA), which acts as a neurotrophic factor during nervous system development, is related to the proliferation and migration of certain cancer cells. The GABAergic system, which is composed of GABA, the GABA-synthesizing enzyme glutamic acid decarboxylase (GAD), and GABA receptors, has an important function in nerve growth and development of neural crest. Therefore, the GABAergic system may play important functional roles in the proliferation of chondrosarcoma cells, which are derived from neural crest cells. We examined the anti-tumor effects of the GABAergic system on a chondrosarcoma cell line. METHODS We evaluated the underlying mechanisms of the anti-tumor effects of the GABAergic system, such as the involvement of different signaling pathways, apoptosis, and cell cycle arrest, in the high-grade chondrosarcoma cell line OUMS-27. In addition, we performed whole-cell patch-clamp recordings for Ca2+ currents and evaluated the changes in intracellular Ca2+ concentration via Ca2+ channels, which are related to the GABAB receptor in high-grade chondrosarcoma cells. RESULTS The GABAB receptor antagonist CGP had anti-tumor effects on high-grade chondrosarcoma cells in a dose-dependent manner. The activities of caspase 3 and caspase 9 were significantly elevated in CGP-treated cells compared to in untreated cells. The activity of caspase 8 did not differ significantly between untreated cells and CGP-treated cells. However, caspase 8 tended to be up-regulated in CGP-treated cells. The GABAB receptor antagonist exhibited anti-tumor effects at the G1/S cell cycle checkpoint and induced apoptosis via dual inhibition of the PI3/Akt/mTOR and MAPK signaling pathways. Furthermore, the changes in intracellular Ca2+ via GABAB receptor-related Ca2+ channels inhibited the proliferation of high-grade chondrosarcoma cells by inducing and modulating apoptotic pathways. CONCLUSIONS The GABAB receptor antagonist may improve the prognosis of high-grade chondrosarcoma by exerting anti-tumor effects via different signaling pathways, apoptosis, cell cycle arrest, and Ca2+ channels in high-grade chondrosarcoma cells.
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Affiliation(s)
- Kiyoto Kanbara
- Department of Orthopedics, Osaka Medical College Takatsuki, Daigaku-machi 2-7, Takatsuki, Osaka, 569-8686, Japan.
| | - Yoshinori Otsuki
- President of Osaka Medical College, Daigaku-machi, Takatsuki, Osaka, Japan
| | - Masahito Watanabe
- Department of Rehabilitation Sciences, Faculty of Allied Health Sciences, Kansai University of Welfare Sciences, Asahigaoka, Kashihara, Osaka, Japan
| | - Syunichi Yokoe
- Department of Pharmacology, Faculty of Medicine, Osaka Medical College, Daigaku-machi, Takatsuki, Osaka, Japan
| | - Yoshiaki Mori
- Department of Rehabilitation Sciences, Faculty of Allied Health Sciences, Kansai University of Welfare Sciences, Asahigaoka, Kashihara, Osaka, Japan
| | - Michio Asahi
- Department of Pharmacology, Faculty of Medicine, Osaka Medical College, Daigaku-machi, Takatsuki, Osaka, Japan
| | - Masashi Neo
- Department of Orthopedics, Osaka Medical College Takatsuki, Daigaku-machi 2-7, Takatsuki, Osaka, 569-8686, Japan
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15
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Chen XG, Ma L, Xu JX. Abnormal DNA methylation may contribute to the progression of osteosarcoma. Mol Med Rep 2017; 17:193-199. [PMID: 29115427 PMCID: PMC5780126 DOI: 10.3892/mmr.2017.7869] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Accepted: 08/31/2017] [Indexed: 01/20/2023] Open
Abstract
The identification of optimal methylation biomarkers to achieve maximum diagnostic ability remains a challenge. The present study aimed to elucidate the potential molecular mechanisms underlying osteosarcoma (OS) using DNA methylation analysis. Based on the GSE36002 dataset obtained from the Gene Expression Omnibus database, differentially methylated genes were extracted between patients with OS and controls using t-tests. Subsequently, hierarchical clustering was performed to segregate the samples into two distinct clusters, OS and normal. Gene Ontology (GO) and pathway enrichment analyses for differentially methylated genes were performed using the Database for Annotation, Visualization and Integrated Discovery tool. A protein-protein interaction (PPI) network was established, followed by hub gene identification. Using the cut-off threshold of ≥0.2 average β-value difference, 3,725 unique CpGs (2,862 genes) were identified to be differentially methylated between the OS and normal groups. Among these 2,862 genes, 510 genes were differentially hypermethylated and 2,352 were differentially hypomethylated. The differentially hypermethylated genes were primarily involved in 20 GO terms, and the top 3 terms were associated with potassium ion transport. For differentially hypomethylated genes, GO functions principally included passive transmembrane transporter activity, channel activity and metal ion transmembrane transporter activity. In addition, a total of 10 significant pathways were enriched by differentially hypomethylated genes; notably, neuroactive ligand-receptor interaction was the most significant pathway. Based on a connectivity degree >90, 7 hub genes were selected from the PPI network, including neuromedin U (NMU; degree=103) and NMU receptor 1 (NMUR1; degree=103). Functional terms (potassium ion transport, transmembrane transporter activity, and neuroactive ligand-receptor interaction) and hub genes (NMU and NMUR1) may serve as potential targets for the treatment and diagnosis of OS.
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Affiliation(s)
- Xiao-Gang Chen
- Department of Orthopedic Surgery, The People's Hospital of Baoan Shenzhen, Shenzhen, Guangdong 518101, P.R. China
| | - Liang Ma
- Department of Orthopedics, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, Shandong 250011, P.R. China
| | - Jia-Xin Xu
- Department of Spine Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei 050000, P.R. China
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Zhu TG, Xiao X, Wei Q, Yue M, Zhang LX. Revealing potential long non-coding RNA biomarkers in lung adenocarcinoma using long non-coding RNA-mediated competitive endogenous RNA network. Braz J Med Biol Res 2017; 50:e6297. [PMID: 28793054 PMCID: PMC5572850 DOI: 10.1590/1414-431x20176297] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Accepted: 06/01/2017] [Indexed: 02/06/2023] Open
Abstract
In our study, we aimed to reveal potential long non-coding RNAs (lncRNA) biomarkers in lung adenocarcinoma (LAD) using lncRNA-mediated competing endogenous RNAs (ceRNAs) network (LMCN). Competing lncRNA-mRNA interactions were identified using the hypergeometric test. Co-expression analysis for the competing lncRNA-mRNA interactions was implemented, and relying on the weight value >0.8, a highly competitive LMCN was further constructed. Degree distribution, betweenness and closeness for LMCN were carried out to analyze the network structure. Functional analyses of mRNAs in LMCN were carried out to further explore the biological functions of lncRNAs. Biclique algorithm was utilized to extract competing modules from the LMCN. Finally, we verified our findings in an independent sample set using qRT-PCR. Based on degrees >60, we identified 4 hubs, including DLEU2, SNHG12, HCP5, and LINC00472. Furthermore, 2 competing modules were identified, and LINC00472 in module 1 functioned as a hub in both LMCN and module. Functional implications of lncRNAs demonstrated that lncRNAs were related to histone modification, negative regulation of cell cycle, neuroactive ligand-receptor interaction, and regulation of actin cytoskeleton. qRT-PCR results demonstrated that lncRNAs LINC00472, and HCP5 were down-regulated in LAD tissues, while the expression level of SNHG12 was up-regulated in LAD tissues. Our study sheds novel light on the roles of lncRNA-related ceRNA network in LAD and facilitates the detection of potential lncRNA biomarkers for LAD diagnosis and treatment. Remarkably, in our study, LINC00472, HCP5, and SNHG12 might be potential biomarkers for LAD management.
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Affiliation(s)
- T-G Zhu
- Department of Pulmonary Disease, The Affiliated Hospital of Changchun University of Chinese Medicine, Changchun, Jilin Province, China
| | - X Xiao
- Department of Heart Disease, The Affiliated Hospital of Changchun University of Chinese Medicine, Changchun, Jilin Province, China
| | - Q Wei
- Department of Heart Disease, The Affiliated Hospital of Changchun University of Chinese Medicine, Changchun, Jilin Province, China
| | - M Yue
- Department of Internal Medicine, Lushuihe Forestry Bureau, Hospital of Jilin Province, Baishan, Jilin Province, China
| | - L-X Zhang
- Department of Pulmonary Disease, The Affiliated Hospital of Changchun University of Chinese Medicine, Changchun, Jilin Province, China
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Extracellular vesicles are independent metabolic units with asparaginase activity. Nat Chem Biol 2017; 13:951-955. [PMID: 28671681 PMCID: PMC5563455 DOI: 10.1038/nchembio.2422] [Citation(s) in RCA: 97] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Accepted: 05/19/2017] [Indexed: 02/06/2023]
Abstract
Extracellular vesicles (EVs) are membrane particles involved in the exchange of a broad range of bioactive molecules between cells and the microenvironment. While it has been shown that cells can traffic metabolic enzymes via EVs much remains to be elucidated with regard to their intrinsic metabolic activity. Accordingly, herein we assessed the ability of neural stem/progenitor cell (NSC)-derived EVs to consume and produce metabolites. Both our metabolomics and functional analyses revealed that EVs harbour L-asparaginase activity catalysed by the enzyme Asparaginase-like protein 1 (Asrgl1). Critically, we show that Asrgl1 activity is selective for asparagine and is devoid of glutaminase activity. We found that mouse and human NSC-derived EVs traffic ASRGL1. Our results demonstrate for the first time that NSC EVs function as independent, extracellular metabolic units able to modify the concentrations of critical nutrients, with the potential to affect the physiology of their microenvironment.
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Aberrant epigenetic regulation of GABRP associates with aggressive phenotype of ovarian cancer. Exp Mol Med 2017; 49:e335. [PMID: 28524180 PMCID: PMC5454450 DOI: 10.1038/emm.2017.62] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Revised: 12/07/2016] [Accepted: 01/04/2017] [Indexed: 11/18/2022] Open
Abstract
Metastasis is a major cause of therapeutic failure in ovarian cancer. To elucidate molecular mechanisms of ovarian cancer metastasis, we previously established a metastatic xenograft mouse model using human ovarian carcinoma SK-OV-3 cells. Using gene expression profiling, we found that γ-aminobutyric acid (GABA)A receptor π subunit (GABRP) expression was upregulated (>4-fold) in metastatic tissues from our xenograft mice compared with SK-OV-3 cells. Importantly, GABRP knockdown diminished the migration and invasion of SK-OV-3 cells, and reduced extracellular signal-regulated kinase (ERK) activation while overexpression of GABRP exhibited significantly increased cell migration, invasion and ERK activation. Moreover, treatment with the mitogen-activated protein kinase (MAPK)/ERK kinase (MEK) inhibitor U0126 similarly suppressed the migration and invasion of SK-OV-3 cells, implying that GABRP promotes these cellular behaviors by activating the MAPK/ERK pathway. Using genome-wide DNA methylation profiling, we identified hypomethylated CpG sites in the GABRP promoter in metastatic tissues from the xenograft mice compared with SK-OV-3 cells. Treatment with a DNA methyltransferase inhibitor demonstrated that methylation at −963 bp from the GABRP transcription start site (−963 CpG site) was critical for the epigenetic regulation of GABRP. Finally, we analyzed human ovarian cancer patient samples and showed DNA hypomethylation at the GABRP −963 CpG site in advanced stage, but not early-stage, primary tumors compared with their paired normal tissues. These findings suggest that GABRP enhances the aggressive phenotype of ovarian cancer cells, and that the DNA methylation status of the GABRP −963 CpG site may be useful for predicting the metastatic potential in ovarian cancer patients.
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Fukagawa S, Miyata K, Yotsumoto F, Kiyoshima C, Nam SO, Anan H, Katsuda T, Miyahara D, Murata M, Yagi H, Shirota K, Yasunaga S, Kato K, Miyamoto S. MicroRNA-135a-3p as a promising biomarker and nucleic acid therapeutic agent for ovarian cancer. Cancer Sci 2017; 108:886-896. [PMID: 28231414 PMCID: PMC5448652 DOI: 10.1111/cas.13210] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2016] [Revised: 02/11/2017] [Accepted: 02/15/2017] [Indexed: 12/12/2022] Open
Abstract
Ovarian cancer is the most lethal gynecologic malignancy. Recently, several molecularly targeted anticancer agents have been developed for ovarian cancer; however, its prognosis remains extremely poor. The development of molecularly targeted therapy, as well as companion diagnostics, is required to improve outcomes for patients with ovarian cancer. In this study, to identify microRNAs (miRNAs) involved in the progression of ovarian cancer we analyzed serum miRNAs in patients with ovarian cancer using miRNA array and quantitative RT-PCR and examined the anticancer properties of miRNA expression in ovarian cancer cells. In patients with ovarian cancer, high amount of miR-135a-3p in serum samples was significantly associated with favorable clinical prognosis. The amount of miR-135a-3p was significantly decreased in patients with ovarian cancer compared with patients with ovarian cysts or normal ovaries. In SKOV-3 and ES-2 human ovarian cancer cells, enhanced expression of miR-135a-3p induced drug sensitivity to cisplatin and paclitaxel and suppressed cell proliferation and xenograft tumor growth. These findings suggest that miR-135a-3p may be considered as a biomarker and a therapeutic agent in ovarian cancer.
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Affiliation(s)
- Satoshi Fukagawa
- Department of Obstetrics and GynecologyFukuoka UniversityFukuokaJapan
- Central Research Institute for Advanced Molecular MedicineFukuoka UniversityFukuokaJapan
| | - Kohei Miyata
- Department of Obstetrics and GynecologyFukuoka UniversityFukuokaJapan
- Central Research Institute for Advanced Molecular MedicineFukuoka UniversityFukuokaJapan
| | | | - Chihiro Kiyoshima
- Department of Obstetrics and GynecologyFukuoka UniversityFukuokaJapan
- Central Research Institute for Advanced Molecular MedicineFukuoka UniversityFukuokaJapan
| | - Sung Ouk Nam
- Department of Obstetrics and GynecologyFukuoka UniversityFukuokaJapan
| | - Haruchika Anan
- Department of Obstetrics and GynecologyFukuoka UniversityFukuokaJapan
| | - Takahiro Katsuda
- Department of Obstetrics and GynecologyFukuoka UniversityFukuokaJapan
| | - Daisuke Miyahara
- Department of Obstetrics and GynecologyFukuoka UniversityFukuokaJapan
| | - Masaharu Murata
- Department of Obstetrics and GynecologyFukuoka UniversityFukuokaJapan
| | - Hiroshi Yagi
- Department of Obstetrics and GynecologyFaculty of MedicineKyushu UniversityFukuokaJapan
| | - Kyoko Shirota
- Department of Obstetrics and GynecologyFukuoka UniversityFukuokaJapan
| | - Shin'ichiro Yasunaga
- Central Research Institute for Advanced Molecular MedicineFukuoka UniversityFukuokaJapan
- Department of BiochemistryFaculty of MedicineFukuoka UniversityFukuokaJapan
| | - Kiyoko Kato
- Department of Obstetrics and GynecologyFaculty of MedicineKyushu UniversityFukuokaJapan
| | - Shingo Miyamoto
- Department of Obstetrics and GynecologyFukuoka UniversityFukuokaJapan
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20
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Zhang Q, Li J, Xie H, Xue H, Wang Y. A network-based pathway-expanding approach for pathway analysis. BMC Bioinformatics 2016; 17:536. [PMID: 28155638 PMCID: PMC5259956 DOI: 10.1186/s12859-016-1333-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Background Pathway analysis combining multiple types of high-throughput data, such as genomics and proteomics, has become the first choice to gain insights into the pathogenesis of complex diseases. Currently, several pathway analysis methods have been developed to study complex diseases. However, these methods did not take into account the interaction between internal and external genes of the pathway and between pathways. Hence, these approaches still face some challenges. Here, we propose a network-based pathway-expanding approach that takes the topological structures of biological networks into account. Results First, two weighted gene-gene interaction networks (tumor and normal) are constructed integrating protein-protein interaction(PPI) information, gene expression data and pathway databases. Then, they are used to identify significant pathways through testing the difference of topological structures of expanded pathways in the two weighted networks. The proposed method is employed to analyze two breast cancer data. As a result, the top 15 pathways identified using the proposed method are supported by biological knowledge from the published literatures and other methods. In addition, the proposed method is also compared with other methods, such as GSEA and SPIA, and estimated using the classification performance of the top 15 expanded pathways. Conclusions A novel network-based pathway-expanding approach is proposed to avoid the limitations of existing pathway analysis approaches. Experimental results indicate that the proposed method can accurately and reliably identify significant pathways which are related to the corresponding disease. Electronic supplementary material The online version of this article (doi:10.1186/s12859-016-1333-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Qiaosheng Zhang
- School of Computer Science and Technology, Harbin Institute of Technology, West Da-Zhi Street, Harbin, China.,College of Science, Heilongjiang Bayi Agricultural University, Xinfeng Road, Daqing, China
| | - Jie Li
- School of Computer Science and Technology, Harbin Institute of Technology, West Da-Zhi Street, Harbin, China.
| | - Haozhe Xie
- School of Computer Science and Technology, Harbin Institute of Technology, West Da-Zhi Street, Harbin, China
| | - Hanqing Xue
- School of Computer Science and Technology, Harbin Institute of Technology, West Da-Zhi Street, Harbin, China
| | - Yadong Wang
- School of Computer Science and Technology, Harbin Institute of Technology, West Da-Zhi Street, Harbin, China
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21
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Lu J, Zhang Q, Tan D, Luo W, Zhao H, Ma J, Liang H, Tan Y. GABA A receptor π subunit promotes apoptosis of HTR-8/SVneo trophoblastic cells: Implications in preeclampsia. Int J Mol Med 2016; 38:105-12. [PMID: 27221053 PMCID: PMC4899026 DOI: 10.3892/ijmm.2016.2608] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Accepted: 05/10/2016] [Indexed: 12/26/2022] Open
Abstract
Gamma-aminobutyric acid (GABA) functions primarily as an inhibitory neurotransmitter through its receptors in the mature central nervous system. The GABA type A receptor π subunit (GABRP) has been identified in the tissues of the reproductive system, particularly in the uterus. In addition, we have previously detected GABRP expression in both human and mouse placentas. To examine the role of GABRP in trophoblastic cell invasion, we constructed a pIRES2-GABRP-EGFP plasmid which was used for the transfection of a human placental cell line derived from first trimester extravillous trophoblasts (HTR-8/SVneo). The number of invaded cells was decreased by GABRP overexpression. Notably, the decrease in the invasive cell number may be due to the increased apoptosis of the HTR-8/SVneo cells following GABRP transfection, which was further confirmed by flow cytometry, reverse transcription-quantitative polymerase chain reaction (RT-qPCR) and western blot analysis. Based on the increased apoptosis of trophoblastic cells in pregnancies complicated by preeclampsia (PE) and the fact that GABRP promotes the apoptosis of trophoblastic cells, we hypothesized that GABRP expression is increased in the placental tissues from patients with PE compared with that in the normal groups and this hypothesis was confirmed by RT-qPCR and immunohistochemical analysis. Taken together, these findings imply that GABRP plays an important role in placentation and this pathway may be a promising molecular target for the development of novel therapeutic strategies for PE.
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Affiliation(s)
- Junjie Lu
- Laboratory Animal Center, Chongqing Medical University, Yuzhong, Chongqing 400016, P.R. China
| | - Qian Zhang
- Laboratory Animal Center, Chongqing Medical University, Yuzhong, Chongqing 400016, P.R. China
| | - Dongmei Tan
- Laboratory Animal Center, Chongqing Medical University, Yuzhong, Chongqing 400016, P.R. China
| | - Wenping Luo
- Laboratory Animal Center, Chongqing Medical University, Yuzhong, Chongqing 400016, P.R. China
| | - Hai Zhao
- Laboratory Animal Center, Chongqing Medical University, Yuzhong, Chongqing 400016, P.R. China
| | - Jing Ma
- Laboratory Animal Center, Chongqing Medical University, Yuzhong, Chongqing 400016, P.R. China
| | - Hao Liang
- Laboratory Animal Center, Chongqing Medical University, Yuzhong, Chongqing 400016, P.R. China
| | - Yi Tan
- Laboratory Animal Center, Chongqing Medical University, Yuzhong, Chongqing 400016, P.R. China
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22
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Gumireddy K, Li A, Kossenkov AV, Sakurai M, Yan J, Li Y, Xu H, Wang J, Zhang PJ, Zhang L, Showe LC, Nishikura K, Huang Q. The mRNA-edited form of GABRA3 suppresses GABRA3-mediated Akt activation and breast cancer metastasis. Nat Commun 2016; 7:10715. [PMID: 26869349 PMCID: PMC4754346 DOI: 10.1038/ncomms10715] [Citation(s) in RCA: 110] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Accepted: 01/12/2016] [Indexed: 12/19/2022] Open
Abstract
Metastasis is a critical event affecting breast cancer patient survival. To identify molecules contributing to the metastatic process, we analysed The Cancer Genome Atlas (TCGA) breast cancer data and identified 41 genes whose expression is inversely correlated with survival. Here we show that GABAA receptor alpha3 (Gabra3), normally exclusively expressed in adult brain, is also expressed in breast cancer, with high expression of Gabra3 being inversely correlated with breast cancer survival. We demonstrate that Gabra3 activates the AKT pathway to promote breast cancer cell migration, invasion and metastasis. Importantly, we find an A-to-I RNA-edited form of Gabra3 only in non-invasive breast cancers and show that edited Gabra3 suppresses breast cancer cell invasion and metastasis. A-to-I-edited Gabra3 has reduced cell surface expression and suppresses the activation of AKT required for cell migration and invasion. Our study demonstrates a significant role for mRNA-edited Gabra3 in breast cancer metastasis. GABRA3, a subunit of the GABA receptor, is often highly expressed in brain metastasis and breast cancers. Here, the authors demonstrated that GABRA3 activates AKT to promote breast cancer cell invasion and that the A-to-I edited form of GABRA3, specifically expressed in noninvasive breast cancers, can suppress the function of wild type GABRA3.
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Affiliation(s)
- Kiranmai Gumireddy
- Department of Tumor Microenvironment and Metastasis, The Wistar Institute, 3601 Spruce Street, Philadelphia, Pennsylvania 19104, USA
| | - Anping Li
- Department of Tumor Microenvironment and Metastasis, The Wistar Institute, 3601 Spruce Street, Philadelphia, Pennsylvania 19104, USA
| | - Andrew V Kossenkov
- Department of Tumor Microenvironment and Metastasis, The Wistar Institute, 3601 Spruce Street, Philadelphia, Pennsylvania 19104, USA
| | - Masayuki Sakurai
- Department of Tumor Microenvironment and Metastasis, The Wistar Institute, 3601 Spruce Street, Philadelphia, Pennsylvania 19104, USA
| | - Jinchun Yan
- University of Washington Medical Center, 1959 N.E. Pacific Street, Seattle, Washington 98195, USA.,Department of Radiation Oncology, Cancer Hospital of Fudan University, 270 Dong An Road, Shanghai 200032, China
| | - Yan Li
- Institute of Cancer Stem Cell, Department of Anatomy, College of Basic Medical Sciences, Dalian Medical University, No. 9 West Section Lvshun South Road, Dalian 116044, China
| | - Hua Xu
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Sciences and Technology, Wuhan 430030, China
| | - Jian Wang
- Department of Biliary-Pancreatic Surgery, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Paul J Zhang
- Department of Pathology and Laboratory Medicine, Hospital of The University of Pennsylvania, Perelman School of Medicine, Philadelphia, Pennsylvania 19104, USA
| | - Lin Zhang
- Department of Obstetrics and Gynecology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Louise C Showe
- Department of Tumor Microenvironment and Metastasis, The Wistar Institute, 3601 Spruce Street, Philadelphia, Pennsylvania 19104, USA
| | - Kazuko Nishikura
- Department of Tumor Microenvironment and Metastasis, The Wistar Institute, 3601 Spruce Street, Philadelphia, Pennsylvania 19104, USA
| | - Qihong Huang
- Department of Tumor Microenvironment and Metastasis, The Wistar Institute, 3601 Spruce Street, Philadelphia, Pennsylvania 19104, USA
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23
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Chen ZA, Bao MY, Xu YF, Zha RP, Shi HB, Chen TY, He XH. Suppression of Human Liver Cancer Cell Migration and Invasion via the GABAA Receptor. Cancer Biol Med 2013; 9:90-8. [PMID: 23691461 PMCID: PMC3643652 DOI: 10.3969/j.issn.2095-3941.2012.02.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2012] [Accepted: 06/10/2012] [Indexed: 12/14/2022] Open
Abstract
Objective To investigate the roles of the γ-aminobutyric acid (GABA) in the metastasis of hepatocellular carcinoma (HCC) and to explore the potential of a novel therapeutic approach for the treatment of HCC. Methods The expression levels of GABA receptor subunit genes in various HCC cell lines and patients‘ tissues were detected by quantitative real-time polymerase chain reaction and Western blot analysis. Transwell cell migration and invasion assays were carried out for functional analysis. The effects of GABA on liver cancer cell cytoskeletal were determined by immunofluorescence staining. And the effects of GABA on HCC metastasis in nude mice were evaluated using an in vivo orthotopic model of liver cancer. Results The mRNA level of GABA receptor subunits varied between the primary hepatocellular carcinoma tissue and the adjacent non-tumor liver tissue. GABA inhibited human liver cancer cell migration and invasion via the ionotropic GABAA receptor as a result of the induction of liver cancer cell cytoskeletal reorganization. Pretreatment with GABA also significantly reduced intrahepatic liver metastasis and primary tumor formation in vivo. Conclusions These findings introduce a potential and novel therapeutic approach for the treatment of cancer patients based on the modulation of the GABAergic system.
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Affiliation(s)
- Zhi-Ao Chen
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200032, China
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24
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Zhang X, Zhang R, Zheng Y, Shen J, Xiao D, Li J, Shi X, Huang L, Tang H, Liu J, He J, Zhang H. Expression of gamma-aminobutyric acid receptors on neoplastic growth and prediction of prognosis in non-small cell lung cancer. J Transl Med 2013; 11:102. [PMID: 23617850 PMCID: PMC3644491 DOI: 10.1186/1479-5876-11-102] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2012] [Accepted: 04/16/2013] [Indexed: 11/23/2022] Open
Abstract
Background Gamma-aminobutyric acid (GABA) is the main inhibitory neurotransmitter in the adult mammalian brain, but exerts physiologic effects other than that on neurotransmitter in non-neuronal peripheral tissues and organs. GABA may affect cancer growth through activation GABA receptors. We investigated the gene expression of GABA receptors in tissue of non-small cell lung cancers (NSCLC) and non-cancerous tissues, and found that the gene expression of GABA receptor phenotypes was correlated with tumorigenesis and clinical prognosis. Methods Sixty-one snap-frozen human samples of NSCLC tissues and paired non-cancerous tissues (5cm away from tumor) were analyzed. Gene expression of GABA receptors was detected by Real-time quantitative PCR (RT-qPCR). Survival times in relation to the expression of GABA receptor phenotypes were analyzed. Human NSCLC cell lines H1299, A549, H520, H460 and human bronchial epithelial cell line BEAS-2B were used to determine the phenotypes of GABA inhibitory effects on cancer cell growth. The effects of exogenous administration of GABA on H1299 cell growth were examined. Results The gene expressions were significantly higher in NSCLC tissues than in the paired non-cancerous tissues for GABAA receptor subunit α3 (GABRA3, P = 0.030); for GABAA receptor subunit epsilon (GABRE, P = 0.036); and GABAB receptor subunit 2 (GABBR2, P = 0.005). Kaplan-Meier curves showed that patients with high expression of GABBR2 gene and low expression of GABRA3 gene had a better prognosis (P < 0.05). The administration of GABA resulted in suppressed proliferation of NSCLC cell lines in a dose- and time-dependent manner. The use of the GABA receptor antagonist CGP35348 could reverse the inhibitory effect. Conclusions The pattern of GABA receptor gene phenotype expression may be involved in the regulation of tumorigenesis. A high expression of GABBR2 with a low expression of GABRA3 may predict a better outcome. The treatment with GABA attenuates cancer cell growth in vitro. The expression of GABA receptor may be not only promising genetic therapeutic targets but may also serve as valuable prognostic markers for NSCLC.
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Affiliation(s)
- Xiaoxue Zhang
- Guangdong Cardiovascular Institute, Southern Medical University, Guangzhou 510080 Guangdong Province, China
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25
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Li S, Sun Y, Gao D. Role of the nervous system in cancer metastasis. Oncol Lett 2013; 5:1101-1111. [PMID: 23599747 PMCID: PMC3629128 DOI: 10.3892/ol.2013.1168] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2012] [Accepted: 10/17/2012] [Indexed: 12/17/2022] Open
Abstract
The notion that tumors lack innervation was proposed several years ago. However, nerve fibers are irregulatedly found in some tumor tissues. Their terminals interaction with cancer cells are considered to be neuro-neoplastic synapses. Moreover, neural-related factors, which are important players in the development and activity of the nervous system, have been found in cancer cells. Thus, they establish a direct connection between the nervous system and tumor cells. They modulate the process of metastasis, including degradation of base membranes, cancer cell invasion, migration, extravasation and colonization. Peripheral nerve invasion provides another pathway for the spread of cancer cells when blood and lymphatic metastases are absent, which is based on the interactions between the microenvironments of nerve fibers and tumor cells. The nervous system also modulates angiogenesis, the tumor microenvironment, bone marrow, immune functions and inflammatory pathways to influence metastases. Denervation of the tumor has been reported to enhance cancer metastasis. Stress, social isolation and other emotional factors may increase distant metastasis through releasing hormones from the brain, the hypothalamic-pituitary-adrenal axis and autonomic nervous system. Disruption of circadian rhythms will also promote cancer metastasis through direct and indirect actions of the nervous system. Therefore, the nervous system plays an important role in cancer metastasis.
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Affiliation(s)
- Sha Li
- Department of Radiation Oncology, Lanzhou General Hospital of PLA, Lanzhou, Gansu 730050
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26
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Bergfeld AK, Pearce OMT, Diaz SL, Pham T, Varki A. Metabolism of vertebrate amino sugars with N-glycolyl groups: elucidating the intracellular fate of the non-human sialic acid N-glycolylneuraminic acid. J Biol Chem 2012; 287:28865-81. [PMID: 22692205 DOI: 10.1074/jbc.m112.363549] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The two major mammalian sialic acids are N-acetylneuraminic acid and N-glycolylneuraminic acid (Neu5Gc). The only known biosynthetic pathway generating Neu5Gc is the conversion of CMP-N-acetylneuraminic acid into CMP-Neu5Gc, which is catalyzed by the CMP-Neu5Ac hydroxylase enzyme. Given the irreversible nature of this reaction, there must be pathways for elimination or degradation of Neu5Gc, which would allow animal cells to adjust Neu5Gc levels to their needs. Although humans are incapable of synthesizing Neu5Gc due to an inactivated CMAH gene, exogenous Neu5Gc from dietary sources can be metabolically incorporated into tissues in the face of an anti-Neu5Gc antibody response. However, the metabolic turnover of Neu5Gc, which apparently prevents human cells from continued accumulation of this immunoreactive sialic acid, has not yet been elucidated. In this study, we show that pre-loaded Neu5Gc is eliminated from human cells over time, and we propose a conceivable Neu5Gc-degrading pathway based on the well studied metabolism of N-acetylhexosamines. We demonstrate that murine tissue cytosolic extracts harbor the enzymatic machinery to sequentially convert Neu5Gc into N-glycolylmannosamine, N-glycolylglucosamine, and N-glycolylglucosamine 6-phosphate, whereupon irreversible de-N-glycolylation of the latter results in the ubiquitous metabolites glycolate and glucosamine 6-phosphate. We substantiate this finding by demonstrating activity of recombinant human enzymes in vitro and by studying the fate of radiolabeled pathway intermediates in cultured human cells, suggesting that this pathway likely occurs in vivo. Finally, we demonstrate that the proposed degradative pathway is partially reversible, showing that N-glycolylmannosamine and N-glycolylglucosamine (but not glycolate) can serve as precursors for biosynthesis of endogenous Neu5Gc.
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Affiliation(s)
- Anne K Bergfeld
- Department of Medicine, Glycobiology Research and Training Center, University of California San Diego, La Jolla, California 92093-0687, USA
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27
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Tse KP, Su WH, Chang KP, Tsang NM, Yu CJ, Tang P, See LC, Hsueh C, Yang ML, Hao SP, Li HY, Wang MH, Liao LP, Chen LC, Lin SR, Jorgensen TJ, Chang YS, Shugart YY. Genome-wide association study reveals multiple nasopharyngeal carcinoma-associated loci within the HLA region at chromosome 6p21.3. Am J Hum Genet 2009; 85:194-203. [PMID: 19664746 PMCID: PMC2725267 DOI: 10.1016/j.ajhg.2009.07.007] [Citation(s) in RCA: 137] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2009] [Revised: 06/04/2009] [Accepted: 07/10/2009] [Indexed: 11/20/2022] Open
Abstract
Nasopharyngeal carcinoma (NPC) is a multifactorial malignancy closely associated with genetic factors and Epstein-Barr virus infection. To identify the common genetic variants linked to NPC susceptibility, we conducted a genome-wide association study (GWAS) in 277 NPC patients and 285 healthy controls within the Taiwanese population, analyzing 480,365 single-nucleotide polymorphisms (SNPs). Twelve statistically significant SNPs were identified and mapped to chromosome 6p21.3. Associations were replicated in two independent sets of case-control samples. Two of the most significant SNPs (rs2517713 and rs2975042; p(combined) = 3.9 x 10(-20) and 1.6 x 10(-19), respectively) were located in the HLA-A gene. Moreover, we detected significant associations between NPC and two genes: specifically, gamma aminobutyric acid b receptor 1 (GABBR1) (rs29232; p(combined) = 8.97 x 10(-17)) and HLA-F (rs3129055 and rs9258122; p(combined) = 7.36 x 10(-11) and 3.33 x 10(-10), respectively). Notably, the association of rs29232 remained significant (residual p < 5 x 10(-4)) after adjustment for age, gender, and HLA-related SNPs. Furthermore, higher GABA(B) receptor 1 expression levels can be found in the tumor cells in comparison to the adjacent epithelial cells (p < 0.001) in NPC biopsies, implying a biological role of GABBR1 in NPC carcinogenesis. To our knowledge, it is the first GWAS report of NPC showing that multiple loci (HLA-A, HLA-F, and GABBR1) within chromosome 6p21.3 are associated with NPC. Although some of these relationships may be attributed to linkage disequilibrium between the loci, the findings clearly provide a fresh direction for the study of NPC development.
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Affiliation(s)
- Ka-Po Tse
- Genomic Medicine Core, Chang Gung Molecular Medicine Research Center, Chang Gung University, Taoyuan, Taiwan 333
| | - Wen-Hui Su
- Molecular Epidemiology Core, Chang Gung Molecular Medicine Research Center, Chang Gung University, Taoyuan, Taiwan 333
| | - Kai-Ping Chang
- Department of Otolaryngology, Chang Gung Memorial Hospital at Lin-Kou, Taoyuan, Taiwan 333
| | - Ngan-Ming Tsang
- Department of Radiation Oncology, Chang Gung Memorial Hospital at Lin-Kou, Taoyuan, Taiwan 333
| | - Chia-Jung Yu
- Department of Biochemistry and Molecular and Cellular Biology, Chang Gung University, Taoyuan, Taiwan 333
| | - Petrus Tang
- Bioinformatics Core, Chang Gung Molecular Medicine Research Center, Chang Gung University, Taoyuan, Taiwan 333
| | - Lee-Chu See
- Biostatistics Core, Chang Gung Molecular Medicine Research Center, Chang Gung University, Taoyuan, Taiwan 333
- Department of Public Health, Chang Gung University, Taoyuan, Taiwan 333
| | - Chuen Hsueh
- Pathology Core, Chang Gung Molecular Medicine Research Center, Chang Gung University, Taoyuan, Taiwan 333
- Department of Pathology, Chang Gung Memorial Hospital at Lin-Kou, Taoyuan, Taiwan 333
| | - Min-Lee Yang
- Molecular Epidemiology Core, Chang Gung Molecular Medicine Research Center, Chang Gung University, Taoyuan, Taiwan 333
| | - Sheng-Po Hao
- Department of Otolaryngology, Chang Gung Memorial Hospital at Lin-Kou, Taoyuan, Taiwan 333
| | - Hong-Yi Li
- Biostatistics Core, Chang Gung Molecular Medicine Research Center, Chang Gung University, Taoyuan, Taiwan 333
- Department of Public Health, Chang Gung University, Taoyuan, Taiwan 333
| | - Ming-Hsi Wang
- Department of Epidemiology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD 21205, USA
| | - Li-Ping Liao
- Molecular Epidemiology Core, Chang Gung Molecular Medicine Research Center, Chang Gung University, Taoyuan, Taiwan 333
| | - Lih-Chyang Chen
- Genomic Medicine Core, Chang Gung Molecular Medicine Research Center, Chang Gung University, Taoyuan, Taiwan 333
| | - Sheue-Rong Lin
- Director's Office, Health Bureau of Taoyuan County, Taoyuan, 33053 Taiwan
| | - Timothy J. Jorgensen
- Department of Epidemiology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD 21205, USA
- Department of Radiation Medicine, Lombardi Comprehensive Cancer Center, Georgetown University, Washington, D.C. 20057, USA
| | - Yu-Sun Chang
- Genomic Medicine Core, Chang Gung Molecular Medicine Research Center, Chang Gung University, Taoyuan, Taiwan 333
| | - Yin Yao Shugart
- Department of Epidemiology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD 21205, USA
- Department of Biostatistics, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD 21205, USA
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Dave KA, Bordey A. GABA increases Ca2+ in cerebellar granule cell precursors via depolarization: implications for proliferation. IUBMB Life 2009; 61:496-503. [PMID: 19391160 DOI: 10.1002/iub.185] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The amino acids glutamate and gamma-aminobutyric acid (GABA) have primarily been characterized as the most prevalent excitatory and inhibitory, respectively, neurotransmitters in the vertebrate central nervous system. However, the role of these signaling molecules extends far beyond the synapse. GABA, glutamate, and their complement of receptors are essential signaling molecules that regulate developmental processes in both embryonic and young adult mammals. In this review, we describe the current knowledge on the role of GABA and glutamate in development, focusing on the perinatal cerebellum. We will then present novel data suggesting that GABA depolarizes granule cell precursors via GABA(A) receptors, which leads to calcium increases in these cells. Finally, we will consider the role of GABA and glutamate signaling on cell proliferation and perhaps neural cancers. From our review of the literature and these data, we hypothesize that GABA(A) receptors and metabotropic glutamate receptors may be a novel target for the pharmacological regulation of the cerebellar tumors, medulloblastomas.
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Affiliation(s)
- Kathleen A Dave
- Department of Neurosurgery, Yale University School of Medicine, New Haven, CT 06520-8082, USA
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29
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Young SZ, Bordey A. GABA's control of stem and cancer cell proliferation in adult neural and peripheral niches. Physiology (Bethesda) 2009; 24:171-85. [PMID: 19509127 PMCID: PMC2931807 DOI: 10.1152/physiol.00002.2009] [Citation(s) in RCA: 99] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Aside from traditional neurotransmission and regulation of secretion, gamma-amino butyric acid (GABA) through GABA(A) receptors negatively regulates proliferation of pluripotent and neural stem cells in embryonic and adult tissue. There has also been evidence that GABAergic signaling and its control over proliferation is not only limited to the nervous system, but is widespread through peripheral organs containing adult stem cells. GABA has emerged as a tumor signaling molecule in the periphery that controls the proliferation of tumor cells and perhaps tumor stem cells. Here, we will discuss GABA's presence as a near-universal signal that may be altered in tumor cells resulting in modified mitotic activity.
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Affiliation(s)
- Stephanie Z Young
- Department of Neurosurgery, Yale University, New Haven, Connecticut, USA
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