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Rashwan HH, Taher AM, Hassan HA, Awaji AA, Kiriacos CJ, Assal RA, Youness RA. Harnessing the supremacy of MEG3 LncRNA to defeat gastrointestinal malignancies. Pathol Res Pract 2024; 256:155223. [PMID: 38452587 DOI: 10.1016/j.prp.2024.155223] [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: 01/05/2024] [Revised: 02/16/2024] [Accepted: 02/21/2024] [Indexed: 03/09/2024]
Abstract
Evidence suggests that long non-coding RNAs (lncRNAs) play a pivotal role in the carcinogenesis and progression of various human malignancies including gastrointestinal malignancies. This comprehensive review reports the functions and mechanisms of the lncRNA maternally expressed gene 3 (MEG3) involved in gastrointestinal malignancies. It summarizes its roles in mediating the regulation of cellular proliferation, apoptosis, migration, invasiveness, epithelial-to-mesenchymal transition, and drug resistance in several gastrointestinal cancers such as colorectal cancer, gall bladder cancer, pancreatic cancer, gastric cancer, esophageal cancer, cholangiocarcinoma, gastrointestinal stromal tumors and most importantly, hepatocellular carcinoma. In addition, the authors briefly highlight its implicated mechanistic role and interactions with different non-coding RNAs and oncogenic signaling cascades. This review presents the rationale for developing non coding RNA-based anticancer therapy via harnessing the power of MEG3 in gastrointestinal malignancies.
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Affiliation(s)
- H H Rashwan
- Molecular Genetics and Biochemistry Department, Molecular Genetics Research Team (MGRT), Faculty of Biotechnology, German International University (GIU), Cairo 11835, Egypt; Bioinformatics Group, Center for Informatics Science (CIS), School of Information Technology and Computer Science (ITCS), Nile University, 12677, Giza, Egypt
| | - A M Taher
- Molecular Genetics and Biochemistry Department, Molecular Genetics Research Team (MGRT), Faculty of Biotechnology, German International University (GIU), Cairo 11835, Egypt
| | - H A Hassan
- Molecular Genetics and Biochemistry Department, Molecular Genetics Research Team (MGRT), Faculty of Biotechnology, German International University (GIU), Cairo 11835, Egypt
| | - A A Awaji
- Department of Biology, Faculty of Science, University College of Taymaa, University of Tabuk, Tabuk 71491, Saudi Arabia
| | - C J Kiriacos
- Molecular Genetics and Biochemistry Department, Molecular Genetics Research Team (MGRT), Faculty of Biotechnology, German International University (GIU), Cairo 11835, Egypt
| | - R A Assal
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Heliopolis University for Sustainable Development, Cairo, Egypt
| | - R A Youness
- Molecular Genetics and Biochemistry Department, Molecular Genetics Research Team (MGRT), Faculty of Biotechnology, German International University (GIU), Cairo 11835, Egypt.
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2
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Hakami ZH. Biomarker discovery and validation for gastrointestinal tumors: A comprehensive review of colorectal, gastric, and liver cancers. Pathol Res Pract 2024; 255:155216. [PMID: 38401376 DOI: 10.1016/j.prp.2024.155216] [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: 12/17/2023] [Revised: 02/07/2024] [Accepted: 02/15/2024] [Indexed: 02/26/2024]
Abstract
Gastrointestinal (GI) malignancies, encompassing gastric, hepatic, colonic, and rectal cancers, are prevalent forms of cancer globally and contribute substantially to cancer-related mortality. Although there have been improvements in methods for diagnosing and treating GI cancers, the chances of survival for these types of cancers are still extremely low. According to the World Cancer Research International Fund's most recent figures, stomach cancer was responsible for roughly one million deaths worldwide in 2020. This emphasizes the importance of developing more effective tools for detecting, diagnosing, and predicting the outcome of these cancers at an early stage. Biomarkers, quantitative indications of biological processes or disease states, have emerged as promising techniques for enhancing the diagnosis and prognosis of GI malignancies. Recently, there has been a considerable endeavor to discover and authenticate biomarkers for various GI cancers by the utilization of diverse methodologies, including genomics, proteomics, and metabolomics. This review provides a thorough examination of the current state of biomarker research in the field of gastrointestinal malignancies, with a specific emphasis on colorectal, stomach, and liver cancers. A thorough literature search was performed on prominent databases such as PubMed, Scopus, and Web of Science to find pertinent papers published until November, 2023 for the purpose of compiling this review. The diverse categories of biomarkers, encompassing genetic, epigenetic, and protein-based biomarkers, and their potential utility in the fields of diagnosis, prognosis, and treatment selection, are explored. Recent progress in identifying and confirming biomarkers, as well as the obstacles that persist in employing biomarkers in clinical settings are emphasized. The utilization of biomarkers in GI cancers has significant potential in enhancing patient outcomes. Ongoing research is expected to uncover more efficient biomarkers for the diagnosis and prognosis of these cancers.
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Affiliation(s)
- Zaki H Hakami
- Department of Medical Laboratory Technology, Faculty of Applied Medical Science, Jazan University, Jazan 45142, Saudi Arabia.
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3
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Ali A, AlHussaini KI. Helicobacter pylori: A Contemporary Perspective on Pathogenesis, Diagnosis and Treatment Strategies. Microorganisms 2024; 12:222. [PMID: 38276207 PMCID: PMC10818838 DOI: 10.3390/microorganisms12010222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 01/07/2024] [Accepted: 01/15/2024] [Indexed: 01/27/2024] Open
Abstract
Helicobacter pylori (H. pylori) is a Gram-negative bacterium that colonizes the gastric mucosa and is associated with various gastrointestinal disorders. H. pylori is a pervasive pathogen, infecting nearly 50% of the world's population, and presents a substantial concern due to its link with gastric cancer, ranking as the third most common cause of global cancer-related mortality. This review article provides an updated and comprehensive overview of the current understanding of H. pylori infection, focusing on its pathogenesis, diagnosis, and treatment strategies. The intricate mechanisms underlying its pathogenesis, including the virulence factors and host interactions, are discussed in detail. The diagnostic methods, ranging from the traditional techniques to the advanced molecular approaches, are explored, highlighting their strengths and limitations. The evolving landscape of treatment strategies, including antibiotic regimens and emerging therapeutic approaches, is thoroughly examined. Through a critical synthesis of the recent research findings, this article offers valuable insights into the contemporary knowledge of Helicobacter pylori infection, guiding both clinicians and researchers toward effective management and future directions in combating this global health challenge.
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Affiliation(s)
- Asghar Ali
- Clinical Biochemistry Laboratory, Department of Biochemistry, School of Chemical and Life Sciences, Jamia Hamdard, New Delhi 110062, India
| | - Khalid I. AlHussaini
- Department of Internal Medicine, College of Medicine, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh 4233-13317, Saudi Arabia
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Seo JH, Ryu S, Cheon SY, Lee SJ, Won SJ, Yim CD, Lee HJ, Hah YS, Park JJ. Sirt6-Mediated Cell Death Associated with Sirt1 Suppression in Gastric Cancer. Cancers (Basel) 2024; 16:387. [PMID: 38254877 PMCID: PMC10814469 DOI: 10.3390/cancers16020387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 01/04/2024] [Accepted: 01/12/2024] [Indexed: 01/24/2024] Open
Abstract
BACKGROUND Gastric cancer, one of the leading causes of cancer-related death, is strongly associated with H. pylori infection, although other risk factors have been identified. The sirtuin (Sirt) family is involved in the tumorigenesis of gastric cancer, and sirtuins can have pro- or anti-tumorigenic effects. METHODS After determining the overall survival rate of gastric cancer patients with or without Sirt6 expression, the effect of Sirt6 upregulation was also tested using a xenograft mouse model. The regulation of Sirt6 and Sirt1, leading to the induction of mouse double minute 2 homolog (MDM2) and reactive oxygen species (ROS), was mainly analyzed using Western blotting and immunofluorescence staining, and gastric cancer cell (SNU-638) death associated with these proteins was measured using flow cytometric analysis. RESULTS Sirt6 overexpression led to Sirt1 suppression in gastric cancer cells, resulting in a higher level of gastric cancer cell death in vitro and a reduced tumor volume. ROS and MDM2 expression levels were upregulated by Sirt6 overexpression and/or Sirt1 suppression according to Western blot analysis. The upregulated ROS ultimately led to gastric cancer cell death as determined via Western blot and flow cytometric analysis. CONCLUSION We found that the upregulation of Sirt6 suppressed Sirt1, and Sirt6- and Sirt1-induced gastric cancer cell death was mediated by ROS production. These findings highlight the potential of Sirt6 and Sirt1 as therapeutic targets for treating gastric cancer.
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Affiliation(s)
- Ji Hyun Seo
- Department of Pediatrics, Institute of Health Science, College of Medicine, Gyeongsang National University, Jinju 52725, Republic of Korea;
- Institute of Medical Science, Gyeongsang National University, Jinju 52725, Republic of Korea; (S.R.); (C.D.Y.)
| | - Somi Ryu
- Institute of Medical Science, Gyeongsang National University, Jinju 52725, Republic of Korea; (S.R.); (C.D.Y.)
- Department of Otorhinolaryngology-Head and Neck Surgery, College of Medicine, Gyeongsang National University, Gyeongsang National University Hospital, Jinju 52727, Republic of Korea
| | - So Young Cheon
- Biomedical Research Institute, Gyeongsang National University Hospital, Jinju 52727, Republic of Korea;
| | - Seong-Jun Lee
- Department of Convergence of Medical Sciences, Gyeongsang National University, Jinju 52725, Republic of Korea
| | - Seong-Jun Won
- Institute of Medical Science, Gyeongsang National University, Jinju 52725, Republic of Korea; (S.R.); (C.D.Y.)
- Department of Otorhinolaryngology-Head and Neck Surgery, College of Medicine, Gyeongsang National University, Gyeongsang National University Hospital, Jinju 52727, Republic of Korea
| | - Chae Dong Yim
- Institute of Medical Science, Gyeongsang National University, Jinju 52725, Republic of Korea; (S.R.); (C.D.Y.)
- Department of Otorhinolaryngology-Head and Neck Surgery, College of Medicine, Gyeongsang National University, Gyeongsang National University Hospital, Jinju 52727, Republic of Korea
| | - Hyun-Jin Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, College of Medicine, Chung-Ang University, Chung-Ang University Gwangmyeong Hospital, Gwangmyeong 06973, Republic of Korea
| | - Young-Sool Hah
- Institute of Medical Science, Gyeongsang National University, Jinju 52725, Republic of Korea; (S.R.); (C.D.Y.)
- Biomedical Research Institute, Gyeongsang National University Hospital, Jinju 52727, Republic of Korea;
| | - Jung Je Park
- Institute of Medical Science, Gyeongsang National University, Jinju 52725, Republic of Korea; (S.R.); (C.D.Y.)
- Department of Otorhinolaryngology-Head and Neck Surgery, College of Medicine, Gyeongsang National University, Gyeongsang National University Hospital, Jinju 52727, Republic of Korea
- Biomedical Research Institute, Gyeongsang National University Hospital, Jinju 52727, Republic of Korea;
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Hossain MU, Ahammad I, Moniruzzaman M, Akter Lubna M, Bhattacharjee A, Mahmud Chowdhury Z, Ahmed I, Hosen MB, Biswas S, Chandra Das K, Keya CA, Salimullah M. Investigation of pathogenic germline variants in gastric cancer and development of "GasCanBase" database. Cancer Rep (Hoboken) 2023; 6:e1906. [PMID: 37867380 PMCID: PMC10728505 DOI: 10.1002/cnr2.1906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Revised: 08/29/2023] [Accepted: 09/14/2023] [Indexed: 10/24/2023] Open
Abstract
BACKGROUND Gastric cancer, which is also known as stomach cancer, can be influenced by both germline and somatic mutations. Non-synonymous Single Nucleotide Polymorphisms (nsSNPs) in germline have long been reported to play a pivotal role in cancer progression. AIM The aim of this study is to examine the nsSNP in GC-associated genes. The study also aims to develop a database with extensive information regarding the nsSNPs in the GC-associated genes and their impacts. METHODS AND RESULTS A total of 34,588 nsSNPs from 1,493,460 SNPs of the 40 genes were extracted from the available SNP database. Drug binding and energy minimization were examined by molecular docking and YASARA. To validate the existence of the germline CDH1 gene mutation (rs34466743) in the isolated blood DNA of gastric cancer (GC) patients, polymerase chain reaction (PCR) and DNA sequencing were performed. According to the results of the gene network analysis, 17 genes may interact with other types of cancer. A total of 11,363 nsSNPs were detected within the 40 GC genes. Among these, 474 nsSNPs were predicted to be damaging and 40 to be the most damaging. The SNPs in domain regions were thought to be strong candidates that alter protein functions. Our findings proposed that most of the selected nsSNPs were within the domains or motif regions. Free Energy Deviation calculation of protein structure pointed toward noteworthy changes in the structure of each protein that can demolish its natural function. Subsequently, drug binding confirmed the structural variation and the ineffectiveness of the drug against the mutant model in individuals with these germline variants. Furthermore, in vitro analysis of the rs34466743 germline variant from the CDH1 gene confirmed the strength and robustness of the pipeline that could expand the somatic alteration for causing cancer. In addition, a comprehensive gastric cancer polymorphism database named "GasCanBase" was developed to make data available to researchers. CONCLUSION The findings of this study and the "GasCanBase" database may greatly contribute to our understanding of molecular epidemiology and the development of precise therapeutics for gastric cancer. GasCanBase is available at: https://www.gascanbase.com/.
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Affiliation(s)
| | - Ishtiaque Ahammad
- Bioinformatics DivisionNational Institute of BiotechnologyDhakaBangladesh
| | - Md. Moniruzzaman
- Molecular Biotechnology DivisionNational Institute of BiotechnologyDhakaBangladesh
| | | | | | | | - Istiak Ahmed
- Department of PharmacyNoakhali Science and Technology UniversityNoakhaliBangladesh
| | - Md. Billal Hosen
- Department of PharmacyNoakhali Science and Technology UniversityNoakhaliBangladesh
| | - Shourov Biswas
- Department of Clinical OncologyBangabandhu Sheikh Mujib Medical UniversityDhakaBangladesh
| | - Keshob Chandra Das
- Molecular Biotechnology DivisionNational Institute of BiotechnologyDhakaBangladesh
| | - Chaman Ara Keya
- Department of Biochemistry and MicrobiologyNorth South UniversityDhakaBangladesh
| | - Md. Salimullah
- Molecular Biotechnology DivisionNational Institute of BiotechnologyDhakaBangladesh
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Malkawi W, Lutfi A, Afghan MK, Shah LM, Costandy L, Ramirez AB, George TC, Toor F, Salem AK, Kasi PM. Circulating tumour cell enumeration, biomarker analyses, and kinetics in patients with colorectal cancer and other GI malignancies. Front Oncol 2023; 13:1305181. [PMID: 38044994 PMCID: PMC10693413 DOI: 10.3389/fonc.2023.1305181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Accepted: 11/03/2023] [Indexed: 12/05/2023] Open
Abstract
Objective Most of the work in terms of liquid biopsies in patients with solid tumors is focused on circulating tumor DNA (ctDNA). Our aim was to evaluate the feasibility of using circulating tumor cells (CTCs) in peripheral blood samples from patients with advanced or metastatic gastrointestinal (GI) cancers. Methods In this prospective study, blood samples were collected from each patient in 2 AccuCyte® blood collection tubes and each tube underwent CTC analysis performed utilizing the RareCyte® platform. The results from both tubes were averaged and a total of 150 draws were done, with 281 unique reported results. The cadence of sampling was based on convenience sampling and piggybacked onto days of actual clinical follow-ups and treatment visits. The CTC results were correlated with patient- and tumor-related variables. Results Data from a total of 59 unique patients were included in this study. Patients had a median age of 58 years, with males representing 69% of the study population. More than 57% had received treatment prior to taking blood samples. The type of GI malignancy varied, with more than half the patients having colorectal cancer (CRC, 54%) followed by esophageal/gastric cancer (17%). The least common cancer was cholangiocarcinoma (9%). The greatest number of CTCs were found in patients with colorectal cancer (Mean: 15.8 per 7.5 ml; Median: 7.5 per 7.5 ml). In comparison, patients with pancreatic cancer (PC) had considerably fewer CTCs (Mean: 4.2 per 7.5 ml; Median: 3 per 7.5 ml). Additionally, we found that patients receiving treatment had significantly fewer CTCs than patients who were not receiving treatment (Median 2.7 versus 0.7). CTC numbers showed noteworthy disparities between patients with responding/stable disease in comparison to those with untreated/progressive disease (Median of 2.7 versus 0). When CTCs were present, biomarker analyses of the four markers human epidermal growth factor receptor 2 (HER2)/programmed death-ligand 1 (PD-L1)/Kiel 67 (Ki-67)/epidermal growth factor receptor (EGFR) was feasible. Single cell sequencing confirmed the tumor of origin. Conclusion Our study is one of the first prospective real-time studies evaluating CTCs in patients with GI malignancies. While ctDNA-based analyses are more common in clinical trials and practice, CTC analysis provides complementary information from a liquid biopsy perspective that is of value and worthy of continued research.
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Affiliation(s)
- Walla Malkawi
- Division of Pharmaceutics and Translational Therapeutics, University of Iowa, Iowa, IA, United States
| | - Areeb Lutfi
- Division of Hematology and Oncology, Weill Cornell Medicine, New York, NY, United States
| | - Maaz Khan Afghan
- Division of Hematology and Oncology, Weill Cornell Medicine, New York, NY, United States
| | - Lamisha Mashiyat Shah
- Division of Hematology and Oncology, Weill Cornell Medicine, New York, NY, United States
| | | | | | | | - Fatima Toor
- Experimental Therapeutics Program, Holden Comprehensive Cancer Center, University of Iowa Hospitals and Clinics, Iowa, IA, United States
- Department of Electrical and Computer Engineering, University of Iowa, Iowa, IA, United States
| | - Aliasger K. Salem
- Division of Pharmaceutics and Translational Therapeutics, University of Iowa, Iowa, IA, United States
- Experimental Therapeutics Program, Holden Comprehensive Cancer Center, University of Iowa Hospitals and Clinics, Iowa, IA, United States
| | - Pashtoon Murtaza Kasi
- Division of Hematology and Oncology, Weill Cornell Medicine, New York, NY, United States
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7
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Gupta S, Panda PK, Luo W, Hashimoto RF, Ahuja R. Network analysis reveals that the tumor suppressor lncRNA GAS5 acts as a double-edged sword in response to DNA damage in gastric cancer. Sci Rep 2022; 12:18312. [PMID: 36316351 PMCID: PMC9622883 DOI: 10.1038/s41598-022-21492-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Accepted: 09/28/2022] [Indexed: 11/14/2022] Open
Abstract
The lncRNA GAS5 acts as a tumor suppressor and is downregulated in gastric cancer (GC). In contrast, E2F1, an important transcription factor and tumor promoter, directly inhibits miR-34c expression in GC cell lines. Furthermore, in the corresponding GC cell lines, lncRNA GAS5 directly targets E2F1. However, lncRNA GAS5 and miR-34c remain to be studied in conjunction with GC. Here, we present a dynamic Boolean network to classify gene regulation between these two non-coding RNAs (ncRNAs) in GC. This is the first study to show that lncRNA GAS5 can positively regulate miR-34c in GC through a previously unknown molecular pathway coupling lncRNA/miRNA. We compared our network to several in-vivo/in-vitro experiments and obtained an excellent agreement. We revealed that lncRNA GAS5 regulates miR-34c by targeting E2F1. Additionally, we found that lncRNA GAS5, independently of p53, inhibits GC proliferation through the ATM/p38 MAPK signaling pathway. Accordingly, our results support that E2F1 is an engaging target of drug development in tumor growth and aggressive proliferation of GC, and favorable results can be achieved through tumor suppressor lncRNA GAS5/miR-34c axis in GC. Thus, our findings unlock a new avenue for GC treatment in response to DNA damage by these ncRNAs.
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Affiliation(s)
- Shantanu Gupta
- grid.11899.380000 0004 1937 0722Departamento de Ciência da Computação, Instituto de Matemática e Estatística, Universidade de São Paulo, Rua do Matão 1010, São Paulo, SP 05508-090 Brasil
| | - Pritam Kumar Panda
- grid.8993.b0000 0004 1936 9457Condensed Matter Theory Group, Materials Theory Division, Department of Physics and Astronomy, Uppsala University, Box 516, 751 20 Uppsala, Sweden
| | - Wei Luo
- grid.8993.b0000 0004 1936 9457Condensed Matter Theory Group, Materials Theory Division, Department of Physics and Astronomy, Uppsala University, Box 516, 751 20 Uppsala, Sweden
| | - Ronaldo F. Hashimoto
- grid.11899.380000 0004 1937 0722Departamento de Ciência da Computação, Instituto de Matemática e Estatística, Universidade de São Paulo, Rua do Matão 1010, São Paulo, SP 05508-090 Brasil
| | - Rajeev Ahuja
- grid.8993.b0000 0004 1936 9457Condensed Matter Theory Group, Materials Theory Division, Department of Physics and Astronomy, Uppsala University, Box 516, 751 20 Uppsala, Sweden ,grid.462391.b0000 0004 1769 8011Department of Physics, Indian Institute of Technology Ropar, Rupnagar, Punjab 140001 India
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8
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Soghala S, Harsiny K, Momeni P, Hatami M, Kholghi Oskooei V, Hussen BM, Taheri M, Ghafouri-Fard S. Down-regulation of LINC-ROR, HOXA-AS2 and MEG3 in gastric cancer. Heliyon 2022; 8:e11155. [PMID: 36299522 PMCID: PMC9589166 DOI: 10.1016/j.heliyon.2022.e11155] [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: 06/04/2021] [Revised: 10/16/2021] [Accepted: 10/13/2022] [Indexed: 11/06/2022] Open
Abstract
Long non-coding RNAs (lncRNAs) have been identified as modulators of gastric carcinogenesis. Evaluation of expression amounts of these transcripts is a primary but essential step for recognition of the role of lncRNAs in the carcinogenesis. Therefore, we compared expressions of LINC-ROR, HOXA-AS2, MEG3 and HOTTIP lncRNAs in gastric cancer samples and nearby non-cancerous samples. Expression levels of LINC-ROR, HOXA-AS2 and MEG3 lncRNAs have been lower in gastric cancer samples compared with nearby non-cancerous samples (Expression ratios = 0.26, 0.37 and 0.36; P values = 0.021, 0.015 and 0.032, respectively). However, expression levels of HOTTIP were not significantly different between gastric cancer tissues and nearby tissues (P value = 0.43). HOTTIP expression was associated with tumor size (P value = 0.04). In addition, MEG3 expression was associated with site of primary tumor (P = 0.0003). Expressions of LINC-ROR and HOXA-AS2 were not associated with any clinical or pathological parameter. ROC curve analysis revealed that HOXA-AS2 and LINC-ROR could significantly differentiate between gastric cancer samples and nearby non-cancerous tissues (AUC values = 0.68 and 0.64; P values = 0.01 and 0.04, respectively). Taken together, the current investigation provides clues for contribution of LINC-ROR, HOXA-AS2 and MEG3 lncRNAs in gastric carcinogenesis and warrants further mechanistical assays.
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Affiliation(s)
- Shahrad Soghala
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Kiana Harsiny
- Phytochemistry Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Parto Momeni
- Department of Cellular and Molecular Biology-Molecular Cellular Science, Faculty of Basic Science, Central Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Mahsa Hatami
- Department of Medical Genetics, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Vahid Kholghi Oskooei
- Department of Medical Biotechnology, School of Paramedical Sciences, Torbat Heydariyeh University of Medical Sciences, Torbat Heydariyeh, Iran,Research Center of Advanced Technologies in Medicine, Torbat Heydariyeh University of Medical Sciences, Torbat Heydariyeh, Iran
| | - Bashdar Mahmud Hussen
- Department of Pharmacognosy, College of Pharmacy, Hawler Medical University, Kurdistan Region, Erbil, Iraq,Center of Research and Strategic Studies, Lebanese French University, Kurdistan Region, Erbil, Iraq
| | - Mohammad Taheri
- Urology and Nephrology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran,Institute of Human Genetics, Jena University Hospital, Jena, Germany,Corresponding author.
| | - Soudeh Ghafouri-Fard
- Department of Medical Genetics, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran,Corresponding author.
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9
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BMP2 as a promising anticancer approach: functions and molecular mechanisms. Invest New Drugs 2022; 40:1322-1332. [PMID: 36040572 DOI: 10.1007/s10637-022-01298-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Accepted: 08/22/2022] [Indexed: 10/14/2022]
Abstract
Bone morphogenetic protein 2 (BMP2), a pluripotent factor, is a member of the transforming growth factor-beta (TGF-β) superfamily and is implicated in embryonic development and postnatal homeostasis in tissues and organs. Experimental research in the contexts of physiology and pathology has indicated that BMP2 can induce macrophages to differentiate into osteoclasts and accelerate the osteolytic mechanism, aggravating cancer cell bone metastasis. Emerging studies have stressed the potent regulatory effect of BMP2 in cancer cell differentiation, proliferation, survival, and apoptosis. Complicated signaling networks involving multiple regulatory proteins imply the significant biological functions of BMP2 in cancer. In this review, we comprehensively summarized and discussed the current evidence related to the modulation of BMP2 in tumorigenesis and development, including evidence related to the roles and molecular mechanisms of BMP2 in regulating cancer stem cells (CSCs), epithelial-mesenchymal transition (EMT), cancer angiogenesis and the tumor microenvironment (TME). All these findings suggest that BMP2 may be an effective therapeutic target for cancer and a new marker for assessing treatment efficacy.
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10
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Yu C, Wang J. Quantification of the Landscape for Revealing the Underlying Mechanism of Intestinal-Type Gastric Cancer. Front Oncol 2022; 12:853768. [PMID: 35592672 PMCID: PMC9110827 DOI: 10.3389/fonc.2022.853768] [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: 01/13/2022] [Accepted: 03/15/2022] [Indexed: 12/02/2022] Open
Abstract
Gastric cancer is a daunting disease with a tragic impact on global health. It is the fourth most common cancer and has become the second most frequent cause of cancer death in recent times. According to the Lauren classification, gastric cancer can be classified into two types: intestinal and diffuse. Intestinal-type gastric cancer (IGC) is more common in elderly people, and atrophic gastritis (AG) and intestinal metaplasia (IM) have been proven to be the main premalignant causes of intestinal-type gastric cancer. In turn, Helicobacter pylori infection has been identified as the most significant cause of AG and IM. In this study, we determine the mechanism of IGC progression and how H. pylori infection induces IGC. Through researching the relevant literature, we identified the key genes associated with gastric cancer and the specific genes associated with IGC. We then use hese genes to build up a gene regulatory network for IGC. Based on this gene regulatory network, we quantify the IGC landscape. Within this landscape, there are three stable states, which are classified as the normal, AG, and gastric cancer states. Through landscape topography, we can determine the biological features and progression process of IGC. To investigate the influence of H. pylori infection on IGC, we simulated different degrees of H. pylori infection. As the H. pylori infection becomes more serious, the landscape topography changes accordingly. A fourth state, named the intestinal metaplasia (IM) state, emerges on the landscape and is associated with a very high risk of developing gastric cancer. The emergence of this state is due to the interactions/regulations among genes. Through variations in the landscape topography, we can determine the influence of H. pylori infection on IGC. Finally, we use global sensitivity analysis to research the regulations most sensitive to IGC prevention or therapies. This study presents a new approach and a novel model with which to explore the mechanism of IGC. The simulations of different degrees of H. pylori infection can provide us with a systematic view of IGC progression. The key regulations found can give us some insight and guidance for clinical trials and experimental studies.
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Affiliation(s)
- Chong Yu
- Department of Statistics, Jilin University of Finance and Economics, Changchun, Jilin, China
| | - Jin Wang
- Department of Chemistry and of Physics and Astronomy, State University of New York at Stony Brook, Stony Brook, NY, United States
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11
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PET imaging of gastric cancer. Nucl Med Mol Imaging 2022. [DOI: 10.1016/b978-0-12-822960-6.00141-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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12
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Bhaskar Rao D, Devanandan HJ, Ganesan K. Identification of kinases and kinase inhibitors for the differential targeting of Wnt/β-catenin signaling in gastric cancer subtypes. Drug Dev Res 2021; 82:1182-1192. [PMID: 34002415 DOI: 10.1002/ddr.21833] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 05/04/2021] [Accepted: 05/07/2021] [Indexed: 01/21/2023]
Abstract
The oncogenic signaling pathway Wnt is often activated in many cancers including gastric cancer. Wnt signaling pathway is considered as a potential target for developing new targeted therapeutics. Kinase inhibitors are the promising class of drugs for many diseases including cancers. Toward identifying the potent inhibitors targeting Wnt signaling pathway, a kinase inhibitor library with 82 inhibitors were screened using Wnt pathway reporter assay in gastric cancer cells. Notably, 34 kinase inhibitors were identified to inhibit Wnt mediated reporter activity to the extent of more than 50%. The corresponding kinase genes, which are known targets of these kinase inhibitors, were investigated for their expression in the available mRNA profiles of gastric tumors. A major group of the kinase genes showed higher expression in intestinal subtype gastric tumors. Another group of kinase genes were found expressed in diffuse type gastric tumors. The kinase genes expressed in intestinal type gastric tumors were found associated with varying survival of gastric cancer patients whereas those expressed in diffuse type tumors were found associated with the poor survival. Thus, the kinase genes specifically expressed in intestinal and diffuse type gastric tumors and the kinase inhibitors to target Wnt signaling pathway in gastric cancer subtypes have been identified.
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Affiliation(s)
- Divya Bhaskar Rao
- Unit of Excellence in Cancer Genetics, Department of Genetics, Centre for Excellence in Genomic Sciences, School of Biological Sciences, Madurai Kamaraj University, Madurai, India
| | - Helen Jemimah Devanandan
- Unit of Excellence in Cancer Genetics, Department of Genetics, Centre for Excellence in Genomic Sciences, School of Biological Sciences, Madurai Kamaraj University, Madurai, India
| | - Kumaresan Ganesan
- Unit of Excellence in Cancer Genetics, Department of Genetics, Centre for Excellence in Genomic Sciences, School of Biological Sciences, Madurai Kamaraj University, Madurai, India
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13
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Liu N, Wu Y, Cheng W, Wu Y, Wang L, Zhuang L. Identification of novel prognostic biomarkers by integrating multi-omics data in gastric cancer. BMC Cancer 2021; 21:460. [PMID: 33902514 PMCID: PMC8073914 DOI: 10.1186/s12885-021-08210-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 04/13/2021] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND Gastric cancer is a fatal gastrointestinal cancer with high morbidity and poor prognosis. The dismal 5-year survival rate warrants reliable biomarkers to assess and improve the prognosis of gastric cancer. Distinguishing driver mutations that are required for the cancer phenotype from passenger mutations poses a formidable challenge for cancer genomics. METHODS We integrated the multi-omics data of 293 primary gastric cancer patients from The Cancer Genome Atlas (TCGA) to identify key driver genes by establishing a prognostic model of the patients. Analyzing both copy number alteration and somatic mutation data helped us to comprehensively reveal molecular markers of genomic variation. Integrating the transcription level of genes provided a unique perspective for us to discover dysregulated factors in transcriptional regulation. RESULTS We comprehensively identified 31 molecular markers of genomic variation. For instance, the copy number alteration of WASHC5 (also known as KIAA0196) frequently occurred in gastric cancer patients, which cannot be discovered using traditional methods based on significant mutations. Furthermore, we revealed that several dysregulation factors played a hub regulatory role in the process of biological metabolism based on dysregulation networks. Cancer hallmark and functional enrichment analysis showed that these key driver (KD) genes played a vital role in regulating programmed cell death. The drug response patterns and transcriptional signatures of KD genes reflected their clinical application value. CONCLUSIONS These findings indicated that KD genes could serve as novel prognostic biomarkers for further research on the pathogenesis of gastric cancers. Our study elucidated a multidimensional and comprehensive genomic landscape and highlighted the molecular complexity of GC.
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Affiliation(s)
- Nannan Liu
- The Fourth Affiliated Hospital, Harbin Medical University, Harbin, 150001, Heilongjiang, China
| | - Yun Wu
- The Fourth Affiliated Hospital, Harbin Medical University, Harbin, 150001, Heilongjiang, China
| | - Weipeng Cheng
- The Fourth Affiliated Hospital, Harbin Medical University, Harbin, 150001, Heilongjiang, China
| | - Yuxuan Wu
- The Fourth Affiliated Hospital, Harbin Medical University, Harbin, 150001, Heilongjiang, China
| | - Liguo Wang
- The Fourth Affiliated Hospital, Harbin Medical University, Harbin, 150001, Heilongjiang, China.
| | - Liwei Zhuang
- The Fourth Affiliated Hospital, Harbin Medical University, Harbin, 150001, Heilongjiang, China.
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14
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Singh M, Kumar V, Sehrawat N, Yadav M, Chaudhary M, Upadhyay SK, Kumar S, Sharma V, Kumar S, Dilbaghi N, Sharma AK. Current paradigms in epigenetic anticancer therapeutics and future challenges. Semin Cancer Biol 2021; 83:422-440. [PMID: 33766649 DOI: 10.1016/j.semcancer.2021.03.013] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 12/14/2020] [Accepted: 03/16/2021] [Indexed: 12/16/2022]
Abstract
Any alteration at the genetic or epigenetic level, may result in multiplex of diseases including tumorigenesis which ultimately results in the cancer development. Restoration of the normal epigenome by reversing the epigenetic alterations have been reported in tumors paving the way for development of an effective epigenetic treatment in cancer. However, delineating various epigenetic events has been a challenging task so far despite substantial progress in understanding DNA methylation and histone modifications during transcription of genes. Many inhibitors in the form of epigenetic drugs mostly targeting chromatin and histone modifying enzymes including DNA methyltransferase (DNMT) enzyme inhibitors and a histone deacetylases (HDACs) inhibitor, have been in use subsequent to the approval by FDA for cancer treatment. Similarly, other inhibitory drugs, such as FK228, suberoylanilide hydroxamic acid (SAHA) and MS-275, have been successfully tested in clinical studies. Despite all these advancements, still we see a hazy view as far as a promising epigenetic anticancer therapy is concerned. The challenges are to have more specific and effective inhibitors with negligible side effects. Moreover, the alterations seen in tumors are not well understood for which one has to gain deeper insight into the tumor pathology as well. Current review focusses on such epigenetic alterations occurring in cancer and the effective strategies to utilize such alterations for potential therapeutic use and treatment in cancer.
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Affiliation(s)
- Manoj Singh
- Department of Biotechnology, Maharishi Markandeshwar (Deemed to be University), Mullana-Ambala, 133207, Haryana, India
| | - Vikas Kumar
- Department of Biotechnology, Maharishi Markandeshwar (Deemed to be University), Mullana-Ambala, 133207, Haryana, India
| | - Nirmala Sehrawat
- Department of Biotechnology, Maharishi Markandeshwar (Deemed to be University), Mullana-Ambala, 133207, Haryana, India
| | - Mukesh Yadav
- Department of Biotechnology, Maharishi Markandeshwar (Deemed to be University), Mullana-Ambala, 133207, Haryana, India
| | - Mayank Chaudhary
- Department of Biotechnology, Maharishi Markandeshwar (Deemed to be University), Mullana-Ambala, 133207, Haryana, India
| | - Sushil K Upadhyay
- Department of Biotechnology, Maharishi Markandeshwar (Deemed to be University), Mullana-Ambala, 133207, Haryana, India
| | - Sunil Kumar
- Department of Biotechnology, Maharishi Markandeshwar (Deemed to be University), Mullana-Ambala, 133207, Haryana, India
| | - Varruchi Sharma
- Department of Biotechnology, Sri Guru Gobind Singh College Sector-26, Chandigarh, UT, 160019, India
| | - Sandeep Kumar
- Department of Bio& Nanotechnology, Guru Jambheshwar University of Science & Technology, Hisar, Haryana, 125001, India
| | - Neeraj Dilbaghi
- Department of Bio& Nanotechnology, Guru Jambheshwar University of Science & Technology, Hisar, Haryana, 125001, India
| | - Anil K Sharma
- Department of Biotechnology, Maharishi Markandeshwar (Deemed to be University), Mullana-Ambala, 133207, Haryana, India.
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15
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Nakonieczna S, Grabarska A, Kukula-Koch W. The Potential Anticancer Activity of Phytoconstituents against Gastric Cancer-A Review on In Vitro, In Vivo, and Clinical Studies. Int J Mol Sci 2020; 21:E8307. [PMID: 33167519 PMCID: PMC7663924 DOI: 10.3390/ijms21218307] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 11/03/2020] [Accepted: 11/04/2020] [Indexed: 12/13/2022] Open
Abstract
Gastric cancer belongs to the heterogeneous malignancies and, according to the World Health Organization, it is the fifth most commonly diagnosed cancer in men. The aim of this review is to provide an overview on the role of natural products of plant origin in the therapy of gastric cancer and to present the potentially active metabolites which can be used in the natural therapeutical strategies as the support to the conventional treatment. Many of the naturally spread secondary metabolites have been proved to exhibit chemopreventive properties when tested on the cell lines or in vivo. This manuscript aims to discuss the pharmacological significance of both the total extracts and the single isolated metabolites in the stomach cancer prevention and to focus on their mechanisms of action. A wide variety of plant-derived anticancer metabolites from different groups presented in the manuscript that include polyphenols, terpenes, alkaloids, or sulphur-containing compounds, underlines the multidirectional nature of natural products.
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Affiliation(s)
- Sylwia Nakonieczna
- Chair and Department of Pharmacognosy, Medical University of Lublin, 1, Chodzki str., 20-093 Lublin, Poland;
| | - Aneta Grabarska
- Chair and Department of Biochemistry and Molecular Biology, Medical University of Lublin, 1, Chodźki, 20-093 Lublin, Poland
| | - Wirginia Kukula-Koch
- Chair and Department of Pharmacognosy, Medical University of Lublin, 1, Chodzki str., 20-093 Lublin, Poland;
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16
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Sung JJY, Coker OO, Chu E, Szeto CH, Luk STY, Lau HCH, Yu J. Gastric microbes associated with gastric inflammation, atrophy and intestinal metaplasia 1 year after Helicobacter pylori eradication. Gut 2020; 69:1572-1580. [PMID: 31974133 PMCID: PMC7456733 DOI: 10.1136/gutjnl-2019-319826] [Citation(s) in RCA: 131] [Impact Index Per Article: 32.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 12/03/2019] [Accepted: 12/14/2019] [Indexed: 12/12/2022]
Abstract
OBJECTIVE Helicobacter pylori is associated with gastric inflammation, precancerous gastric atrophy (GA) and intestinal metaplasia (IM). We aimed to identify microbes that are associated with progressive inflammation, GA and IM 1 year after H. pylori eradication. DESIGN A total of 587 H. pylori-positive patients were randomised to receive H. pylori eradication therapy (295 patients) or placebo (292 patients). Bacterial taxonomy was analysed on 404 gastric biopsy samples comprising 102 pairs before and after 1 year H. pylori eradication and 100 pairs before and after 1 year placebo by 16S rRNA sequencing. RESULTS Analysis of microbial sequences confirmed the eradication of H. pylori in treated group after 1 year. Principal component analysis revealed distinct microbial clusters reflected by increase in bacterial diversity (p<0.00001) after H. pylori eradication. While microbial interactions remained largely unchanged after placebo treatment, microbial co-occurrence was less in treated group. Acinetobacter lwoffii, Streptococcus anginosus and Ralstonia were enriched while Roseburia and Sphingomonas were depleted in patients with persistent inflammation 1 year after H. pylori eradication. A distinct cluster of oral bacteria comprising Peptostreptococcus, Streptococcus, Parvimonas, Prevotella, Rothia and Granulicatella were associated with emergence and persistence of GA and IM. Probiotic Faecalibacterium praustznii was depleted in subjects who developed GA following H. pylori eradication. Functional pathways including amino acid metabolism and inositol phosphate metabolism were enriched while folate biosynthesis and NOD-like receptor signalling decreased in atrophy/IM-associated gastric microbiota. CONCLUSION This study identified that gastric microbes contribute to the progression of gastric carcinogenesis after H. pylori eradication.
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Affiliation(s)
- Joseph J Y Sung
- Department of Medicine and Therapeutics, Chinese University of Hong Kong, New Territories, Hong Kong
| | - Olabisi Oluwabukola Coker
- Department of Medicine and Therapeutics, Chinese University of Hong Kong, New Territories, Hong Kong
| | - Eagle Chu
- Department of Medicine and Therapeutics, Chinese University of Hong Kong, New Territories, Hong Kong
| | - Chun Ho Szeto
- Department of Medicine and Therapeutics, Chinese University of Hong Kong, New Territories, Hong Kong
| | - Simson Tsz Yat Luk
- Department of Medicine and Therapeutics, Chinese University of Hong Kong, New Territories, Hong Kong
| | - Harry Cheuk Hay Lau
- Department of Medicine and Therapeutics, Chinese University of Hong Kong, New Territories, Hong Kong
| | - Jun Yu
- Department of Medicine and Therapeutics, Chinese University of Hong Kong, New Territories, Hong Kong
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17
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Vahidi S, Norollahi SE, Agah S, Samadani AA. DNA Methylation Profiling of hTERT Gene Alongside with the Telomere Performance in Gastric Adenocarcinoma. J Gastrointest Cancer 2020; 51:788-799. [PMID: 32617831 DOI: 10.1007/s12029-020-00427-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
PURPOSE Epigenetic modification including of DNA methylation, histone acetylation, histone methylation, histon phosphorylation and non-coding RNA can impress the gene expression and genomic stability and cause different types of malignancies and also main human disorder. Conspicuously, the epigenetic alteration special DNA methylation controls telomere length, telomerase activity and also function of different genes particularly hTERT expression. Telomeres are important in increasing the lifespan, health, aging, and the development and progression of some diseases like cancer. METHODS This review provides an assessment of the epigenetic alterations of telomeres, telomerase and repression of its catalytic subunit, hTERT and function of long non-coding RNAs such as telomeric-repeat containing RNA (TERRA) in carcinogenesis and tumorgenesis of gastric cancer. RESULTS hTERT expression is essential and indispensable in telomerase activation through immortality and malignancies and also plays an important role in maintaining telomere length. Telomeres and telomerase have been implicated in regulating epigenetic factors influencing certain gene expression. Correspondingly, these changes in the sub telomere and telomere regions are affected by the shortening of telomere length and increased telomerase activity and hTERT gene expression have been observed in many cancers, remarkably in gastric cancer. CONCLUSION Epigenetic alteration and regulation of hTERT gene expression are critical in controlling telomerase activity and its expression. Graphical Abstract.
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Affiliation(s)
- Sogand Vahidi
- Clinical Research Development Unit of Poursina Hospital, Guilan University of Medical Sciences, Rasht, Iran
| | - Seyedeh Elham Norollahi
- Clinical Research Development Unit of Poursina Hospital, Guilan University of Medical Sciences, Rasht, Iran.
| | - Shahram Agah
- Colorectal Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Ali Akbar Samadani
- Healthy Ageing Research Center, Neyshabur University of Medical Sciences, Neyshabur, Iran.
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18
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Huang H, Yang Y, Zhang W, Liu X, Yang G. TTK regulates proliferation and apoptosis of gastric cancer cells through the Akt-mTOR pathway. FEBS Open Bio 2020; 10:1542-1549. [PMID: 32530571 PMCID: PMC7396433 DOI: 10.1002/2211-5463.12909] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 05/07/2020] [Accepted: 06/05/2020] [Indexed: 01/17/2023] Open
Abstract
TTK (also known as Mps1) is the core component of the spindle assembly checkpoint, which ensures proper distribution of chromosomes to daughter cells to maintain genome integrity and to balance growth and division. However, the function of TTK in tumorigenesis has not been extensively studied, especially in relation to the development of gastric cancer. In this study, survival and tumor recurrence data related to TTK expression level in gastric cancer patients were collected and analyzed. We observed that TTK expression was negatively correlated with survival and tumor recurrence in vivo. TTK was also upregulated in gastric cancer cells and was observed to be essential for the proliferation and survival of gastric cancer cells. Knockdown of TTK inhibited proliferation and increased apoptosis. Furthermore, we report that TTK regulates the proliferation and apoptosis of tumor cells through the Akt‐mTOR pathway. Knockdown of TTK inhibited activation of Akt‐mTOR signaling. In summary, our data indicate that TTK is involved in the regulation of gastric cancer proliferation and apoptosis.
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Affiliation(s)
- Hongxia Huang
- School of Medicine, Zhejiang University City College, Hangzhou, China
| | - Yadong Yang
- Institute of Bioengineering, Hangzhou Medical College, Hangzhou, China
| | - Wenyuan Zhang
- Institute of Bioengineering, Hangzhou Medical College, Hangzhou, China
| | - Xinzhu Liu
- Institute of Bioengineering, Hangzhou Medical College, Hangzhou, China
| | - Geng Yang
- Institute of Bioengineering, Hangzhou Medical College, Hangzhou, China
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19
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Ahadi M, Moradi A, Musavinejad L, Movafagh A, Moradi A. The Expression of p53, CD44, Ki-67, and HER-2/neu Markers in Gastric Cancer and Its Association with Histopathological Indicators: A Retrospective Study. Asian Pac J Cancer Prev 2020; 21:1607-1614. [PMID: 32592354 PMCID: PMC7568877 DOI: 10.31557/apjcp.2020.21.6.1607] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Accepted: 06/21/2020] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND AND OBJECTIVES Gastric cancer is known as one of the most common cancers and causes of deaths. Early and proper diagnosis is one of the most important things for treatment response. Therefore, this study aimed to determine the expression of p53, CD44, Ki-67, and HER-2/neu markers in the gastric cancer and its relationship with histopathological indicators. METHODS This is a descriptive-analytical study, in which 60 patients with cancer who underwent gastrectomy surgery in 2011-2016 in Shohadaye Tajrish Hospital. The participants were investigated for p53, CD44, Ki-67, and HER-2/neu markers' staining plus demographic characteristics, rate of survival, and histopathological features of the tumors. RESULTS The mean age of the participants (44 males and 16 females) was 60.25±1.29 years. The patients' survival rate was 23.82±1.56 months on average. The tumor size was reported as 6.09±2.61 mm and the major tumor type reported was intestinal type (n=40, 66.7%). The level of expression of Ki-67 and CD44 makers was recorded as 33.75 and 24.50%, and p53 and HER-2/neu genes were positive in 25 (41.7%) and 20 (33.3%) patients, respectively. The expression of p53 and CD44 markers had no significant relationship with the demographic characteristics, rate of survival, and histopathological features of the tumor of patients (all p>0.05). The expression of p53 gene was associated with the lower rate of survival (p=0.014), while the expression of HER-2/neu was associated with higher probability of developing intestinal type of stomach adenocarcinoma (p=0.010) and ulcerative macroscopic view (p=0.034). CONCLUSION This study illustrated that p53 and CD44 markers did not have any diagnostic value in predicting the biological behavior of gastric cancer. In fact, incidence of p53 gene was associated with the lower rate of survival, and the expression of HER-2/neu was associated with higher probability of developing the intestinal type of stomach adenocarcinoma and ulcerative macroscopic view.
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Affiliation(s)
- Mahsa Ahadi
- Department of Pathology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Afshin Moradi
- Department of Pathology, Shohada-e-Tajrish Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Leila Musavinejad
- Department of Pathology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Abolfazl Movafagh
- Department of Medical Genetics, Schoolof Medicine, Shahid Behesti University of Medical Sciences, Tehran, Iran.
| | - Arsham Moradi
- Department of Biology, University of Toronto, Toronto, Canada.
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20
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Kim BJ, Kim YJ, Sohn SH, Kim B, Sul HJ, Kim HS, Zang DY. Tivantinib inhibits the VEGF signaling pathway and induces apoptosis in gastric cancer cells with c-MET or VEGFA amplification. Invest New Drugs 2020; 38:1633-1640. [PMID: 32361789 DOI: 10.1007/s10637-020-00940-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Accepted: 04/15/2020] [Indexed: 12/25/2022]
Abstract
Tivantinib has been described as a selective inhibitor of c-Met and is being studied in various types of cancer. In this study, we evaluated the effects of tivantinib on the suppression of gastric cancer (GC) cell migration and apoptosis. We also examined the mechanism of action of tivantinib by oncogenic pathway analysis. We applied an RNA-sequencing approach in 34 GC patients to identify oncogenes that are differentially expressed in GC tissues. To examine the inhibitory effect of tivantinib on GC cells, we conducted apoptosis analysis using an annexin V-APC/PI apoptosis detection kit and trans-well migration assay with human GC cell lines. For oncogenic pathway analysis, Western blot and quantitative real-time PCR analysis were used to detect the expression of proteins and genes before and after tivantinib exposure. In the RNA-sequencing analysis of 34 GC patients, c-Met and VEGFA genes were expressed and positively correlated with each other. Cell migration and apoptosis analysis demonstrated that tivantinib induced the best inhibition effect in SNU620, MKN45 (carries VEGFB mutation), AGS, and MKN28 cells, but not in KATO III (carries VEGFB and VEGFC mutations) cells. Oncogenic pathway analysis showed that tivantinib, in addition to c-Met signaling pathway inhibition, also inhibits VEGF signaling and MYC expression in VEGFA-expressing GC cells. We found that tivantinib has anti-cancer activity not only in GC cells overexpressing c-Met but also in non-c-Met GC cells by inhibition of the VEGF signaling pathway.
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Affiliation(s)
- Bum Jun Kim
- Division of Internal Medicine, National Army Capital Hospital, The Armed Forces Medical Command, Sungnam, 13574, Republic of Korea
| | - Yoo Jin Kim
- Hallym Translational Research Institute, Hallym University College of Medicine, Anyang-si, Gyeonggi-do, 14068, Republic of Korea
| | - Sung-Hwa Sohn
- Hallym Translational Research Institute, Hallym University College of Medicine, Anyang-si, Gyeonggi-do, 14068, Republic of Korea
| | - Bohyun Kim
- Hallym Translational Research Institute, Hallym University College of Medicine, Anyang-si, Gyeonggi-do, 14068, Republic of Korea
| | - Hee Jung Sul
- Hallym Translational Research Institute, Hallym University College of Medicine, Anyang-si, Gyeonggi-do, 14068, Republic of Korea
| | - Hyeong Su Kim
- Division of Hematology-Oncology, Department of Internal Medicine, Hallym University Medical Center, Hallym University College of Medicine, Anyang-si, Gyeonggi-do, 14068, Republic of Korea
| | - Dae Young Zang
- Hallym Translational Research Institute, Hallym University College of Medicine, Anyang-si, Gyeonggi-do, 14068, Republic of Korea. .,Division of Hematology-Oncology, Department of Internal Medicine, Hallym University Medical Center, Hallym University College of Medicine, Anyang-si, Gyeonggi-do, 14068, Republic of Korea.
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21
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Cui X, Zhang H, Cao A, Cao L, Hu X. Cytokine TNF-α promotes invasion and metastasis of gastric cancer by down-regulating Pentraxin3. J Cancer 2020; 11:1800-1807. [PMID: 32194791 PMCID: PMC7052870 DOI: 10.7150/jca.39562] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Accepted: 12/20/2019] [Indexed: 01/04/2023] Open
Abstract
As a novel multifaceted player in cancer, Pentraxin3(PTX3) was recognized to be a possible factor related with tumor development. Recent researches have indicated that PTX3 is involved in immune response, inflammation, as well as cancer, and is greatly controlled by numerous cytokines. Tumor necrosis factor (TNF-α) is an imperative cytokine that demonstrates an extensive array of biological consequences in gastric cancer advancement. Here, we inspected the expression of PTX3 in gastric carcinoma tissues along with gastric cell lines and established that PTX3 was suggestively inferior in gastric cancer tissue and cells. The treatment of the gastric cell lines BGC-823 as well as SGC-7901 with rhTNF-α caused substantial decrease in the expression of PTX3. Furthermore, PTX3 controlled the capability of cell migration, invasion as well as epithelial-mesenchymal transition (EMT) in gastric cancer cell lines mediated by TNF-α. Additionally, PTX3 upregulation inhibited tumorigenicity in vivo and could be reversed by exogenous TNF-α. Conversely, overexpression of PTX3 inhibited progress both in vitro as well as in vivo in gastric cancer mediated by TNF-α. Further studies are necessary to demonstrate the mechanism of interaction between PTX3 and cytokines.
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Affiliation(s)
- Xinye Cui
- Department of General Surgery, The First Affiliated Hospital, Dalian Medical University, Dalian 116011,China
| | - Han Zhang
- Department of Pathology, Dalian Medical University, Dalian 116044, People's Republic of China
| | - An'na Cao
- Department of Pathology, Dalian Medical University, Dalian 116044, People's Republic of China
| | - Liang Cao
- Department of General Surgery, The First Affiliated Hospital, Dalian Medical University, Dalian 116011,China
| | - Xiang Hu
- Department of General Surgery, The First Affiliated Hospital, Dalian Medical University, Dalian 116011,China
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22
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Kędzierska L, Madej-Michniewicz A, Marczuk N, Dołęgowska B, Starzyńska T, Błogowski W. Clinical significance of various growth factors in patients with different gastric neoplasms. Am J Transl Res 2020; 12:118-129. [PMID: 32051741 PMCID: PMC7013217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Accepted: 09/20/2019] [Indexed: 06/10/2023]
Abstract
Growth factors represent a family of important biological molecules that can also be critical in the pathogenesis of various gastrointestinal cancers. In this study, we conducted a comprehensive analysis of the systemic levels of selected growth factors - hepatocyte, vascular-endothelial, fibroblast, and insulin-like 1 growth factors (HGF, VEGF, FGF, and IGF-1, respectively), as well as granulocyte-colony stimulating factor (G-CSF) in 75 patients with different gastric neoplasms (carcinomas, gastrointestinal stromal tumors - GISTs, neuroendocrine neoplasms - NENs, and lymphomas) and 40 healthy volunteers. Patients with gastric carcinoma or other types of gastric neoplasms had higher HGF and IGF-1 levels than healthy individuals (P < 0.05 in all cases). In comparison to healthy control subjects, systemic VEGF concentrations were elevated in patients with gastric carcinoma (P < 0.05), but not in individuals with other types of gastric malignancies. No statistically significant differences were observed between the analyzed groups in terms of FGF and G-CSF levels. When patients with gastric carcinoma were subdivided according to the Japanese classification system, significantly elevated levels of HGF, VEGF, and IGF-1 concentrations were observed in patients with advanced gastric carcinoma (extending beyond the submucosal layer of the stomach). Only the systemic levels of HGF were associated with tumor node metastasis - TNM staging, the absolute numbers of bone marrow-derived mesenchymal cells, and very small embryonic/epiblast-like stem cells circulating in patients with gastric carcinoma. ROC curves analyses demonstrated that AUC values of systemic levels of examined growth factors ranged from 0.40-0.65 (P > 0.06 in all cases). In conclusion, patients with gastric malignancies showed a systemic biochemical imbalance in multiple growth factors, which appears to be associated with clinical presentation of these neoplasms in humans. However, none of the growth factors examined here seem to be suitable diagnostic biomarkers for detecting or differentiating different types of gastric malignancies in humans.
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Affiliation(s)
- Lidia Kędzierska
- Department of Gastroenterology, Pomeranian Medical University in SzczecinPoland
| | | | - Natalia Marczuk
- Department of Microbiology, Immunology and Laboratory Medicine, Pomeranian Medical University in SzczecinPoland
| | - Barbara Dołęgowska
- Department of Microbiology, Immunology and Laboratory Medicine, Pomeranian Medical University in SzczecinPoland
| | - Teresa Starzyńska
- Department of Gastroenterology, Pomeranian Medical University in SzczecinPoland
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23
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Ge L, Wang Y, Duan QH, Liu SS, Liu GJ. MicroRNA-760 acts as a tumor suppressor in gastric cancer development via inhibiting G-protein-coupled receptor kinase interacting protein-1 transcription. World J Gastroenterol 2019; 25:6619-6633. [PMID: 31832002 PMCID: PMC6906209 DOI: 10.3748/wjg.v25.i45.6619] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 10/29/2019] [Accepted: 11/13/2019] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Gastric cancer (GC) has become a serious threat to people's health. Accumulative evidence reveals that dysregulation of numerous microRNAs (miRNAs) has been found during malignant formation. So far, the role of microRNA-760 (miR-760) in the development of GC is largely unknown.
AIM To measure the expression level of miR-760 in GC and investigate its role in gastric tumorigenesis.
METHODS Real-time quantitative polymerase chain reaction and Western blot analysis were used to measure the expression of miR-760 and G-protein-coupled receptor kinase interacting protein-1 (GIT1). Cell growth was detected by 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2-H-tetrazolium bromide (MTT) and cell colony formation assays. Apoptosis was assessed by flow cytometric analysis. The relationship between miR-760 and GIT1 was verified by luciferase reporter assay.
RESULTS The results showed that the expression of miR-760 was decreased in GC and associated with poor clinical outcomes in GC patients. Furthermore, miR-760 restrained cell proliferation and cell colony formation and induced apoptosis in GC cells. In addition, miR-760 directly targeted GIT1 and negatively regulated its expression in GC. GIT1 was upregulated in GC and predicted a worse prognosis in GC patients. We also found that upregulation of GIT1 weakened the inhibitory effect of miR-760 in GC.
CONCLUSION In conclusion, miR-760 targets GIT1 to inhibit cell growth and promote apoptosis in GC cells. Our data demonstrate that miR-760 may be a potential target for the treatment of GC.
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Affiliation(s)
- Liang Ge
- Department of Anal and Intestinal Surgery, Affiliated Hospital of Weifang Medical University, Weifang 261031, Shandong Province, China
| | - Yu Wang
- Department of Anal and Intestinal Surgery, Affiliated Hospital of Weifang Medical University, Weifang 261031, Shandong Province, China
| | - Quan-Hong Duan
- Department of Anal and Intestinal Surgery, Affiliated Hospital of Weifang Medical University, Weifang 261031, Shandong Province, China
| | - Song-Shan Liu
- Department of Surgery, Weifang Medical College, Weifang 261031, Shandong Province, China
| | - Guo-Jing Liu
- Department of Anal and Intestinal Surgery, Affiliated Hospital of Weifang Medical University, Weifang 261031, Shandong Province, China
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24
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Ren F, Zhao Q, Liu B, Sun X, Tang Y, Huang H, Mei L, Yu Y, Mo H, Dong H, Zheng P, Mi Y. Transcriptome analysis reveals GPNMB as a potential therapeutic target for gastric cancer. J Cell Physiol 2019; 235:2738-2752. [PMID: 31498430 DOI: 10.1002/jcp.29177] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Accepted: 08/23/2019] [Indexed: 12/31/2022]
Abstract
Gastric cancer has the fifth highest incidence of disease and is the third leading cause of cancer-associated mortality in the world. The etiology of gastric cancer is complex and needs to be fully elucidated. Thus, it is necessary to explore potential pathogenic genes and pathways that contribute to gastric cancer. Gene expression profiles of the GSE33335 and GSE54129 datasets were downloaded from the Gene Expression Omnibus database. The differentially expressed genes (DEGs) were compared and identified using R software. The DEGs were then subjected to gene set enrichment analysis and Gene Ontology and Kyoto Encyclopedia of Genes and Genomes pathway enrichment analyses. Survival analyses based on The Cancer Genome Atlas database were used to further screen the essential DEGs. A knockdown assay was performed to determine the function of the candidate gene in gastric cancer. Finally, the association between the candidate gene and immune-related genes was investigated. We found that GPNMB serves as an essential gene, with a high expression level, and predicts a worse outcome of gastric cancer. Knockdown of GPNMB inhibited gastric cancer cell proliferation and migration. In addition, GPNMB may augment the immunosuppressive ability of gastric cancer by recruiting immunosuppressive cells and promoting immune cell exhaustion through PI3K/AKT/CCL4 signaling axis. Collectively, these data suggest that GPNMB acts as an important positive mediator of tumor progression in gastric cancer, and GPNMB could exert multimodality modulation of gastric cancer-mediated immune suppression.
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Affiliation(s)
- Feifei Ren
- Henan Key Laboratory for Helicobacter pylori & Microbiota and GI cancer, Marshall Medical Research Center, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.,Department of Gastroenterology, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Qitai Zhao
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Bin Liu
- Henan Key Laboratory for Helicobacter pylori & Microbiota and GI cancer, Marshall Medical Research Center, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.,Department of Gastroenterology, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Xiangdong Sun
- Henan Key Laboratory for Helicobacter pylori & Microbiota and GI cancer, Marshall Medical Research Center, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.,Department of Gastroenterology, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Youcai Tang
- Henan Key Laboratory for Helicobacter pylori & Microbiota and GI cancer, Marshall Medical Research Center, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.,Department of Gastroenterology, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.,Department of Sciences and Education and Pediatrics, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Huang Huang
- Henan Key Laboratory for Helicobacter pylori & Microbiota and GI cancer, Marshall Medical Research Center, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.,Department of Gastroenterology, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Lu Mei
- Henan Key Laboratory for Helicobacter pylori & Microbiota and GI cancer, Marshall Medical Research Center, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.,Department of Gastroenterology, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Yong Yu
- Henan Key Laboratory for Helicobacter pylori & Microbiota and GI cancer, Marshall Medical Research Center, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.,Department of Gastroenterology, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Hui Mo
- Henan Key Laboratory for Helicobacter pylori & Microbiota and GI cancer, Marshall Medical Research Center, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.,Department of Gastroenterology, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Haibin Dong
- Henan Key Laboratory for Helicobacter pylori & Microbiota and GI cancer, Marshall Medical Research Center, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.,Department of Gastroenterology, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Pengyuan Zheng
- Henan Key Laboratory for Helicobacter pylori & Microbiota and GI cancer, Marshall Medical Research Center, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.,Department of Gastroenterology, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Yang Mi
- Henan Key Laboratory for Helicobacter pylori & Microbiota and GI cancer, Marshall Medical Research Center, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.,Department of Gastroenterology, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
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25
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Yin Y, Li X, Guo Z, Zhou F. MicroRNA‑381 regulates the growth of gastric cancer cell by targeting TWIST1. Mol Med Rep 2019; 20:4376-4382. [PMID: 31545430 DOI: 10.3892/mmr.2019.10651] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Accepted: 01/29/2019] [Indexed: 11/06/2022] Open
Abstract
Gastric cancer (GC) has one of the highest mortality rates among all types of cancer in the world. At present, an efficient treatment for GC remains elusive. Studies have demonstrated that microRNAs (miRs) are abnormally expressed in cancer, and that these serve important roles in the development and metastasis of various human tumors, including GC. It has been suggested that regulation of miRs may bring about new developments in GC therapy. miR‑381 has been reported to be downregulated in human cancer, and it regulates cancer cell growth in numerous types of cancer. The present study reports that miR‑381 was downregulated in GC cells, and upregulation of miR‑381 may inhibit GC cell growth, which may be attributed to the inhibition of cell proliferation and the promotion of apoptosis. Furthermore, Twist‑related protein 1 (TWIST1) was predicted and confirmed to be a direct target of miR‑381 by dual‑luciferase assay in GC. Upregulation of miR‑381 caused a decrease in the expression of TWIST1 at the mRNA and protein levels in GC cells. Taken together, the present study demonstrated that miR‑381 is downregulated in GC cells, and that miR‑381 may inhibit GC cell growth. Therefore, miR‑381 may serve as a novel target for the clinical treatment of GC in the future.
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Affiliation(s)
- Yongling Yin
- Department of Radiation and Medical Oncology, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, P.R. China
| | - Xiaoyun Li
- Department of Internal Medicine‑Oncology, Affiliated People's Hospital of Inner Mongolia Medical University, Hohhot, Inner Mongolia 010020, P.R. China
| | - Zongquan Guo
- Digestive Department, Affiliated People's Hospital of Inner Mongolia Medical University, Hohhot, Inner Mongolia 010020, P.R. China
| | - Fuxiang Zhou
- Department of Radiation and Medical Oncology, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, P.R. China
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26
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Kim N. Chemoprevention of gastric cancer by Helicobacter pylori eradication and its underlying mechanism. J Gastroenterol Hepatol 2019; 34:1287-1295. [PMID: 30828872 DOI: 10.1111/jgh.14646] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2019] [Revised: 02/23/2019] [Accepted: 03/01/2019] [Indexed: 12/11/2022]
Abstract
The cascade of gastric cancer, a leading cause of cancer incidence and mortality, is multifactorial. Helicobacter pylori (HP) infection plays a major role in gastric cancer (GC), and there has been an accumulation of data regarding the chemopreventive effect of HP eradication. However, it remains unclear how HP infection causes GC and how HP eradication prevents GC. To clarify this issue, the following approaches were performed in this review article. First, how HP-induced atrophic gastritis (AG) and intestinal metaplasia (IM) provoke the development of GC is shown, followed by how long HP eradication takes to induce a reversible change in AG and IM. Second, epigenetic studies of PTPN6, MOS, DCC, CRK, and VAV1 were performed in noncancerous gastric specimens in terms of HP status. Among these genes, MOS was found to be a possible surrogate marker for GC development. HP eradication decreased aberrant DNA methylation in a gene-specific manner, and MOS played a role in metachronous gastric neoplasms. Third, transforming growth factor-β1 (TGF-β1) and TGF-β1-induced epithelial-mesenchymal transition (EMT) markers were investigated in gastric mucosa. HP infection triggered the TGF-β1-induced EMT pathway and caused the emergence of GC stem cells, such as CD44v8-10. When HP was eradicated, these two pathways were inhibited. Finally, a 2222 cohort study showed that HP eradication significantly decreased the risk of noncardiac GC. Taken together, HP eradication is effective as a primary GC prevention method, and its underlying mechanism includes reversibility of AG and IM, methylation, EMT, and stem cells.
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Affiliation(s)
- Nayoung Kim
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, South Korea.,Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, South Korea.,Tumor Microenvironment Global Core Research Center, Seoul National University, Seoul, South Korea
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27
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Impact of the Gastrointestinal Microbiome in Health and Disease: Co-evolution with the Host Immune System. Curr Top Microbiol Immunol 2019; 421:303-318. [PMID: 31123894 DOI: 10.1007/978-3-030-15138-6_12] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Microbes within the gastrointestinal tract communicate with each other and with the host, which has profound effects on health and disease development. Only now, it is becoming apparent that how and when we acquire our own unique collection of "gut microbes" and also how we choose to maintain them is fundamental to our health. Helicobacter pylori is the most common bacterial infection worldwide, colonizing around half of the world's population, and is the major risk factor for gastric adenocarcinoma. More recently, it has also been shown to have some beneficial effects in terms of protecting against the development of other diseases. Here, we review the current knowledge on how H. pylori has shaped gastrointestinal microbiota colonization and the host immune system with specific focus on the impact of H. pylori on the various microbiome niches of the gastrointestinal tract. We discuss how the presence of H. pylori influences the physiology of three major regions within the gastrointestinal tract-specifically the oesophagus, stomach and colon. We pay particular attention to the role of H. pylori under chronic inflammatory conditions including the development of cancer. With increased incidence of diseases such as eosinophilic oesophagitis, oesophageal adenocarcinoma and squamous cell carcinoma being attributed to the decline in H. pylori, their disease pathogenesis in light of changing H. pylori colonization is also discussed.
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28
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Eshaghi Malekshah R, Salehi M, Kubicki M, Khaleghian A. Biological studies and computational modeling of two new copper complexes derived from β-diketones and their nano-complexes. J COORD CHEM 2019. [DOI: 10.1080/00958972.2019.1606422] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
| | - Mehdi Salehi
- Department of Chemistry, College of Science, Semnan University, Semnan, Iran
| | - Maciej Kubicki
- Faculty of Chemistry, Adam Mickiewicz University, Poznan, Poland
| | - Ali Khaleghian
- Biochemistry Department, Faculty of Medicine, Semnan University of Medical Sciences, Semnan, Iran
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29
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Tang E, Wang Y, Liu T, Yan B. Gastrin promotes angiogenesis by activating HIF-1α/β-catenin/VEGF signaling in gastric cancer. Gene 2019; 704:42-48. [PMID: 30980943 DOI: 10.1016/j.gene.2019.04.029] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 04/06/2019] [Accepted: 04/09/2019] [Indexed: 01/27/2023]
Abstract
Angiogenesis is recognized as a sign of cancer and facilitates cancer progression and metastasis. Suppression of angiogenesis is a desirable strategy for gastric cancer (GC) management. In this study, we showed a novel role of gastrin in angiogenesis of GC. We observed that treatment with gastrin 17 (G17) increased the proliferation of AGS cells and enhanced tube formation during normoxia and hypoxia. The expression level of VEGF were increased by G17 treatment as well. Experiments on the mechanism showed that G17 promoted HIF-1α expression, which subsequently enhanced β-catenin nuclear localization and activation of TCF3 and LEF1 and finally resulted in angiogenesis by upregulating VEGF. An in vivo experiment confirmed that G17 enhanced GC cell proliferation and angiogenesis in the resultant tumor. In conclusion, our findings indicate that gastrin promotes angiogenesis via activating HIF-1α/β-catenin/VEGF axis in GC.
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Affiliation(s)
- E Tang
- Department of Gastroenterology, Qingpu Branch of Zhongshan Hospital, Fudan University, Shanghai 201700, China
| | - Yongfeng Wang
- Department of General Surgery, Qingpu Branch of Zhongshan Hospital, Fudan University, Shanghai 201700, China
| | - Tiemei Liu
- Department of Gastroenterology, Endoscopy Center, Qingpu Branch of Zhongshan Hospital, Fudan University, Shanghai 201700, China.
| | - Bin Yan
- Department of General Surgery, Qingpu Branch of Zhongshan Hospital, Fudan University, Shanghai 201700, China.
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30
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Yuan KT, Li BX, Yuan YJ, Tan M, Tan JF, Dai WG, Feng WD, Zuo JD. Deregulation of MicroRNA-375 Inhibits Proliferation and Migration in Gastric Cancer in Association With Autophagy-Mediated AKT/mTOR Signaling Pathways. Technol Cancer Res Treat 2019; 17:1533033818806499. [PMID: 30355273 PMCID: PMC6202745 DOI: 10.1177/1533033818806499] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Gastric cancer is a deadly disease. Some microRNAs are involved in tumor invasion and metastasis. Underexpression of miR-375 has been correlated with tumorigenesis, treatment resistance, and poor prognosis. In this study, we first analyzed the profiles and prognostic values of miR-375 expression in gastric cancer tissues from a public database, and the expression level of miR-375 in gastric cancer samples and gastric cancer cell lines was then analyzed by quantitative real- time polymerase chain reaction. Significant underexpression of miR-375 was seen in all the gastric cancer samples compared to paired paracarcinoma tissues, and the expression level of miR-375 in the gastric cancer cell lines was negatively associated with the cell migration ability. A Cell proliferation (CCK-8) assay was performed to examine cell viability. Overexpression of miR-375 suppressed the proliferation of gastric cancer cells. A Western blot analysis was carried out to test protein expression. Overexpression of miR-375 inhibited autophagy through the AKT/ mammalian target of rapamycin signaling pathway. MiR-375 regulated invasion and migration via AKT/ mammalian target of rapamycin pathway-mediated epithelial-to-mesenchymal transition. Wound healing and migration assays were used to determine the motility of gastric cancer cells. A gastric cancer xenograft nude mouse model was used for an in vivo efficacy evaluation. Overexpression of miR-375 significantly suppressed cell proliferation in the established gastric cancer xenograft nude mouse model. Our results demonstrate that increasing the expression level of miR-375 suppresses proliferation in vitro and in vivo, and they provide a mechanistic and applicable rationale for the future clinical evaluation of miR-375 in gastric cancer treatment. Our findings provide not only new information about the molecular mechanism of microRNAs in regulating invasion and migration in gastric cancer but also a theoretical principle for a potential targeted therapy for gastric cancer.
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Affiliation(s)
- Kai-Tao Yuan
- 1 Department of Gastrointestinal Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Bao-Xia Li
- 1 Department of Gastrointestinal Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Yu-Jie Yuan
- 1 Department of Gastrointestinal Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Min Tan
- 1 Department of Gastrointestinal Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Jin-Fu Tan
- 1 Department of Gastrointestinal Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Wei-Gang Dai
- 1 Department of Gastrointestinal Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Wei-Dong Feng
- 1 Department of Gastrointestinal Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Ji-Dong Zuo
- 1 Department of Gastrointestinal Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
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31
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Preliminary analysis of single-nucleotide polymorphisms in IL-10, IL-4, and IL-4Rα genes and profile of circulating cytokines in patients with gastric Cancer. BMC Gastroenterol 2018; 18:184. [PMID: 30526523 PMCID: PMC6288868 DOI: 10.1186/s12876-018-0913-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Accepted: 11/27/2018] [Indexed: 12/14/2022] Open
Abstract
Background Gastric Cancer is highly prevalent and deadly worldwide. In Colombia, it is the most lethal form of cancer. Some single-nucleotide polymorphisms in IL-10, IL-4, and IL-4Rα genes have been associated with an anti-inflammatory environment and a Th2 profile in detriment of the antitumor Th1 response. This research sought to detect single-nucleotide polymorphisms in promoter sequences, like − 1082 (G/A), − 592 (C/A), and − 819 (C/T), as well as − 590 (C/T) of the IL-10 and IL-4 genes, respectively; in addition to the IL-4Rα mutation variants, Ile50Val and Q576R, together with circulating levels of IL-4, TNF-α, IL-10, and IFN-γ in patients with gastric carcinoma in Cúcuta, Colombia. Methods In a cross-sectional study, 17 patients and 30 healthy individuals were genotyped for the six polymorphisms mentioned through PCR-RFLP of DNA obtained from peripheral blood cells and serum samples were analyzed by sandwich ELISA to quantify cytokines. Statistical difference between groups was determined along with the association between the presence of polymorphisms and the risk of gastric cancer, as well as the mortality in patients, using Mann-Whitney U test and logistic regression analysis, respectively. Results An association between the − 1082 (G/A) and the risk of gastric cancer was found (OR = 7.58, range 0.77–74.06, P = 0.08). Furthermore, patients had a significant increase in IL-4 serum levels (P < 0.01) compared to healthy individuals, both variables showed a higher estimated risk of mortality in patients, although without statistical association (P > 0.05). Conclusion We infer that two possible biomarkers (one immunological and one genetic) could be considered in association with gastric cancer in our population, which should be confirmed by subsequent studies involving a greater number of individuals.
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32
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Companioni O, Bonet C, García N, Ramírez-Lázaro MJ, Lario S, Mendoza J, Adrados MM, Poves E, Espinosa L, Pozo-Kreilinger JJ, Ortega L, Bujanda L, Cosme A, Ferrández A, Muñoz G, Cuatrecasas M, Elizalde I, Andreu V, Paules MJ, Madrigal B, Barrio J, Berdasco M, Calvet X, Sanz-Anquela JM, Gisbert JP, González CA, Sala N. Genetic variation analysis in a follow-up study of gastric cancer precursor lesions confirms the association of MUC2
variants with the evolution of the lesions and identifies a significant association with NFKB1
and CD14. Int J Cancer 2018; 143:2777-2786. [PMID: 30171605 DOI: 10.1002/ijc.31839] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Revised: 07/03/2018] [Accepted: 07/11/2018] [Indexed: 01/05/2023]
Affiliation(s)
- Osmel Companioni
- Unit of Nutrition and Cancer, Cancer Epidemiology Research Program; Catalan Institute of Oncology (ICO)-IDIBELL; Barcelona Spain
| | - Catalina Bonet
- Unit of Nutrition and Cancer, Cancer Epidemiology Research Program; Catalan Institute of Oncology (ICO)-IDIBELL; Barcelona Spain
| | - Nadia García
- Unit of Nutrition and Cancer, Cancer Epidemiology Research Program; Catalan Institute of Oncology (ICO)-IDIBELL; Barcelona Spain
- Translational Research Laboratory; Catalan Institute of Oncology (ICO)-IDIBELL; Barcelona Spain
| | - María José Ramírez-Lázaro
- Departament of Medicine, Digestive Diseases Service; Institut Universitari Parc Taulí, Sabadell, and Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD); Spain
| | - Sergio Lario
- Departament of Medicine, Digestive Diseases Service; Institut Universitari Parc Taulí, Sabadell, and Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD); Spain
| | - Jorge Mendoza
- Department of Gastroenterology; Hospital Universitario de La Princesa, Instituto de Investigación Sanitaria Princesa (IIS-IP) and CIBEREHD; Madrid Spain
| | - Mª Magdalena Adrados
- Department of Pathology; Hospital Universitario de la Princesa, IIS-IP; Madrid, Spain
| | - Elvira Poves
- Department of Gastroenterology; Hospital Universitario Príncipe de Asturias; Alcalá de Henares Spain
| | - Laura Espinosa
- Department of Gastroenterology; Hospital Universitario Príncipe de Asturias; Alcalá de Henares Spain
| | | | - Luís Ortega
- Department of Pathology; Hospital Clínico San Carlos; Madrid Spain
| | - Luis Bujanda
- Department of Pathology and Hospital Donostia/Instituto Biodonostia; Universidad del País Vasco (UPV/EHU), and CIBEREHD; San Sebastián Spain
| | - Angel Cosme
- Department of Gastroenterology; Hospital Donostia/Instituto Biodonostia, Universidad del País Vasco (UPV/EHU), and CIBEREHD; San Sebastián Spain
| | - Angel Ferrández
- Department of Gastroenterology and Hospital Clínico Universitario Lozano Blesa Zaragoza, and CIBEREHD; Spain
| | - Guillermo Muñoz
- Department of Pathology; Hospital Clínico Universitario Lozano Blesa, Zaragoza, and CIBEREHD; Spain
| | - Miriam Cuatrecasas
- Department of Pathology; Hospital Clínic de Barcelona, IDIBAPS and CIBEREHD, and Universitat de Barcelona; Spain
| | - Ignasi Elizalde
- Department of Gastroenterology; Hospital Clínic de Barcelona, IDIBAPS and CIBEREHD; Spain
| | - Victoria Andreu
- Department of Gastroenterology; Hospital de Viladecans; Spain
| | - Mª José Paules
- Department of Pathology; Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat; Spain
| | - Beatriz Madrigal
- Department of Pathology; Hospital Universitario Río Hortega; Valladolid Spain
| | - Jesús Barrio
- Department of Gastroenterology; Hospital Universitario Río Hortega; Valladolid Spain
| | - María Berdasco
- Cancer Epigenetics and Biology Program, IDIBELL; Barcelona Spain
| | - Xavier Calvet
- Departament of Medicine, Digestive Diseases Service; Institut Universitari Parc Taulí, Sabadell, and Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD); Spain
| | - José Miguel Sanz-Anquela
- Department of Pathology; Hospital “Principe de Asturias” and University of Alcalá; Alcalá de Henares Spain
| | - Javier P. Gisbert
- Department of Gastroenterology; Hospital Universitario de La Princesa, Instituto de Investigación Sanitaria Princesa (IIS-IP) and CIBEREHD; Madrid Spain
| | - Carlos A. González
- Unit of Nutrition and Cancer, Cancer Epidemiology Research Program; Catalan Institute of Oncology (ICO)-IDIBELL; Barcelona Spain
| | - Núria Sala
- Unit of Nutrition and Cancer, Cancer Epidemiology Research Program; Catalan Institute of Oncology (ICO)-IDIBELL; Barcelona Spain
- Translational Research Laboratory; Catalan Institute of Oncology (ICO)-IDIBELL; Barcelona Spain
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Xie Y, Liu L. Analysis of correlation between HP infection and activation of PI3K/Akt pathway in mucosal tissues of gastric cancer and precancerous lesions. Oncol Lett 2018; 16:5615-5620. [PMID: 30344716 PMCID: PMC6176243 DOI: 10.3892/ol.2018.9329] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Accepted: 05/02/2018] [Indexed: 12/27/2022] Open
Abstract
The aim of the study was to investigate the correlation between Helicobacter pylori (HP) infection and activation of the phosphatidylinositol-3-kinase/Akt (PI3K/Akt) pathway in mucosal tissues of gastric cancer and precancerous lesions. Patients with chronic atrophic gastritis (n=52) and gastric cancer (n=98) were treated in the Department of Gastroenterology at The Fifth People's Hospital of Chongqing from August 2011 to August 2016 were selected, and the biopsy tissue and serum specimens were collected. The HP infection was detected via enzyme-linked immunosorbent assay (ELISA), and the expression level of phosphorylated-Akt (p-Akt) was detected via immunohistochemistry (IHC). Moreover, in vivo experiments were performed to simulate HP infection in gastric cancer cells (MGC-803 and AGS), and the p-Akt protein level, PI3K activity and cell proliferative activity were detected. Finally, the changes in Akt protein level were detected by co-culture of gastric cancer cells via LY294002, a PI3K inhibitor, and HP. The positive rate of HP infection in patients with chronic atrophic gastritis was 84.6% (44/52), which was significantly higher than that in patients with gastric cancer [73.5% (72/98)] (p<0.05). The positive rate of HP infection in patients with early gastric cancer (86.4%) was significantly higher than that in patients with moderate-advanced gastric cancer (69.7%) (p<0.05). Results of IHC and western blot analysis revealed that the p-Akt expression level in HP-positive tissues was obviously higher than that in HP-negative tissues (p<0.05). In vitro cell experiments revealed that the PI3K activity was enhanced and the PI3K/Akt pathway was significantly activated after HP infection in tumor cells, thus promoting the proliferation of tumor cells (p<0.05) in a time-dependent manner. After LY294002 inhibited PI3K activity, Akt was not significantly activated by HP infection. Thus, HP activates the PI3K/Akt pathway in gastric cancer cells, thereby promoting tumor cell proliferation.
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Affiliation(s)
- Yi Xie
- Department of Gastroenterology, The Fifth People's Hospital of Chongqing, Chongqing 400062, P.R. China
| | - Li Liu
- Department of Oncology, The Fifth People's Hospital of Chongqing, Chongqing 400062, P.R. China
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Wang X, Wang X, Liu Y, Dong Y, Wang Y, Kassab MA, Fan W, Yu X, Wu C. LGR5 regulates gastric adenocarcinoma cell proliferation and invasion via activating Wnt signaling pathway. Oncogenesis 2018; 7:57. [PMID: 30089773 PMCID: PMC6082861 DOI: 10.1038/s41389-018-0071-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 06/20/2018] [Accepted: 06/29/2018] [Indexed: 12/20/2022] Open
Abstract
LGR5 plays a critical role in tissue development and the maintenance of adult stem cells in gastrointestinal tract. However, the oncogenic role of LGR5 in the development of gastric adenocarcinoma remains elusive. Here, we show that LGR5 promotes gastric adenocarcinoma cell proliferation and metastasis. We find that knock down of LGR5 or suppression of Wnt signaling pathway by inhibitor C59 arrests gastric adenocarcinoma cell proliferation and invasion. Moreover, treatment of Wnt3a, the activator of Wnt signaling pathway, partially recovers the proliferation defect observed in LGR5 knockdown gastric adenocarcinoma cells. Moreover, LGR5 facilitates β-catenin nuclear accumulation, a surrogate marker of the activation of Wnt signaling pathway. In addition, C59 treatment suppresses transcription of Axin2 and TCF1, both of which are the target genes of β-catenin in gastric adenocarcinoma cells. Gastric adenocarcinoma cells with overexpressed LGR5 form a large quantity of visible actin filaments and pseudopods, suggesting that LGR5 significantly enhances the ability of cell movement, which might capacitate gastric adenocarcinoma cells with enhanced LGR5 expression to gain invasive and migratory properties. Taken together, our results show that LGR5 contributes to cell proliferation and invasion through the activation of Wnt/β-catenin-signaling pathway in gastric adenocarcinoma cells.
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Affiliation(s)
- Xiangfei Wang
- College of Life Sciences, Hebei University, Baoding, 071002, Hebei, China
| | - Xiumin Wang
- College of Life Sciences, Hebei University, Baoding, 071002, Hebei, China
| | - Yang Liu
- College of Life Sciences, Hebei University, Baoding, 071002, Hebei, China
| | - Yating Dong
- College of Life Sciences, Hebei University, Baoding, 071002, Hebei, China
| | - Yanan Wang
- Affiliated hospital of Hebei University, Baoding, 071002, Hebei, China
| | - Muzaffer Ahmad Kassab
- Department of Cancer Genetics and Epigenetics, Beckman Research Institute, City of Hope, 1500 E. Duarte Rd, Duarte, CA, 91010, USA
| | - Wufang Fan
- College of Life Sciences, Hebei University, Baoding, 071002, Hebei, China.
| | - Xiaochun Yu
- Department of Cancer Genetics and Epigenetics, Beckman Research Institute, City of Hope, 1500 E. Duarte Rd, Duarte, CA, 91010, USA.
| | - Chen Wu
- College of Life Sciences, Hebei University, Baoding, 071002, Hebei, China.
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Puneet, Kazmi HR, Kumari S, Tiwari S, Khanna A, Narayan G. Epigenetic Mechanisms and Events in Gastric Cancer-Emerging Novel Biomarkers. Pathol Oncol Res 2018; 24:757-770. [PMID: 29552712 DOI: 10.1007/s12253-018-0410-z] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Accepted: 03/07/2018] [Indexed: 12/12/2022]
Abstract
Gastric cancer is one of the most common malignancy worldwide. The various genetic and epigenetic events have been found to be associated with its carcinogenesis. The epigenetic is a heritable and transient/reversible change in the gene expression that is not accompanied by modification in the DNA sequence. This event is characterized by the alteration in the promoter CpG island of the gene or histone modification. These events are associated with silencing of critical tumor suppressor gene and activation of oncogenes leading to carcinogenesis. The DNA methylation is a chemical change in the DNA sequence that most commonly occurs at cytosine moiety of CpG dinucleotide and histone, primarily on N- terminal tail that ultimately effect the interaction of DNA with chromatin modifying protein.Hypermethylation of tumor suppressor genes and global hypomethylation of oncogenes are widely studied epigenetic modifications. There are large number of publish reports regarding epigenetic events involving gastric cancer. These changes are potentially useful in identifying markers for early diagnosis and management of this lethal malignancy. Also, role of specific miRNAs and long non coding RNAs in regulation of gene expression is gaining interest and is a matter of further investigation. In this review, we aimed to summarize major epigenetic events (DNA methylation) in gastric cancer along with alteration in miRNAs and long non coding RNAs which plays an important role in pathology of this poorly understood malignancy.
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Affiliation(s)
- Puneet
- Department of Surgery, Institute of Medical Science, Banaras Hindu University, Varanasi, 221005, India.
| | - Hasan Raza Kazmi
- Cancer Genetics Laboratory, Department of Molecular and Human Genetics, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Soni Kumari
- Cancer Genetics Laboratory, Department of Molecular and Human Genetics, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Satendra Tiwari
- Department of Surgery, Institute of Medical Science, Banaras Hindu University, Varanasi, 221005, India
| | - A Khanna
- Department of Surgery, Institute of Medical Science, Banaras Hindu University, Varanasi, 221005, India
| | - Gopeshwar Narayan
- Cancer Genetics Laboratory, Department of Molecular and Human Genetics, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
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Sheibani S, Mahmoudian RA, Abbaszadegan MR, Chamani J, Memar B, Gholamin M. Expression analysis of matrix metalloproteinase-13 in human gastric cancer in the presence of Helicobacter Pylori infection. Cancer Biomark 2018; 18:349-356. [PMID: 28128735 DOI: 10.3233/cbm-160127] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND Matrix metalloproteinases (MMPs) can degrade essentially the extracellular matrix (ECM) components. MMPs are important regulators of tumor growth; hence the enzymes are considered as important targets for cancer therapy. MMP-13 is specially activated in gastric cancer and promotes the invasiveness of the primary tumors. Helicobacter Pylori (H.pylori) interacts with gastric epithelial cells and stimulates it to produce MMP-13in vitro. OBJECTIVE The relation between MMP-13 gene expression and clinicopathological characteristics of gastric cancer in the presence of H.pylori infection was investigated in fifty patients. METHODS The level of MMP-13 gene expression was measured by quantitative Real-time PCR method and was evaluated between two groups of normal and carcinomatous tissues. RESULTS The results showed 30% elevation of MMP-13 expression in tumor tissues. H.pylori infection did not have a significant effect on the expression of MMP-13. There was a correlation between gene expression and tumor type (P value = 0.032). In addition, there was a significant correlation between MMP-13 gene expression and tumor stage in intestinal group (P value = 0.023). CONCLUSIONS Based on the results, it might be concluded that in intestinal group, immune system plays an important role in reducing gene expression. Results also showed over expression (60%) in diffuse group. These findings suggest that using MMP-13 inhibitors in diffuse group might contribute to the control of tumor growth.
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Affiliation(s)
- Shoaleh Sheibani
- Department of Biophysics, Faculty of Science, Islamic Azad University-Mashhad Branch, Mashhad, Iran
| | | | - Mohammad Reza Abbaszadegan
- Immunology Research Center, BuAli Research Institute, Mashhad University of Medical Sciences, Mashhad, Iran.,Medical Genetics Research Center, Medical School, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Jamshidkhan Chamani
- Department of Biophysics, Faculty of Science, Islamic Azad University-Mashhad Branch, Mashhad, Iran
| | - Bahram Memar
- Pathology Department, Imam Reza Hospital, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mehran Gholamin
- Department of Laboratory Sciences, School of Paramedical Sciences, Mashhad University of Medical Sciences, Mashhad, Iran.,Immunology Research Center, BuAli Research Institute, Mashhad University of Medical Sciences, Mashhad, Iran
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Integrated MicroRNA-mRNA Analysis Reveals miR-204 Inhibits Cell Proliferation in Gastric Cancer by Targeting CKS1B, CXCL1 and GPRC5A. Int J Mol Sci 2017; 19:ijms19010087. [PMID: 29283424 PMCID: PMC5796037 DOI: 10.3390/ijms19010087] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Revised: 12/23/2017] [Accepted: 12/25/2017] [Indexed: 01/07/2023] Open
Abstract
Gastric cancer (GC) is the second most frequent cause of cancer-related deaths worldwide. MicroRNAs are single-stranded RNA molecules of 21–23 nucleotides that regulate target gene expression through specific base-pairing interactions between miRNA and untranslated regions of targeted mRNAs. In this study, we generated a multistep approach for the integrated analysis of miRNA and mRNA expression. First, both miRNA and mRNA expression profiling datasets in gastric cancer from the Gene Expression Omnibus (GEO) and The Cancer Genome Atlas (TCGA) identified 79 and 1042 differentially expressed miRNAs and mRNAs, respectively, in gastric cancer. Second, inverse correlations between miRNA and mRNA expression levels identified 3206 miRNA–mRNA pairs combined with 79 dysregulated miRNAs and their 774 target mRNAs predicted by three prediction tools, miRanda, PITA, and RNAhybrid. Additionally, miR-204, which was found to be down-regulated in gastric cancer, was ectopically over-expressed in the AGS gastric cancer cell line and all down-regulated targets were identified by RNA sequencing (RNA-seq) analysis. Over-expression of miR-204 reduced the gastric cancer cell proliferation and suppressed the expression of three targets which were validated by qRT-PCR and luciferase assays. For the first time, we identified that CKS1B, CXCL1, and GPRC5A are putative targets of miR-204 and elucidated that miR-204 acted as potential tumor suppressor and, therefore, are useful as a promising therapeutic target for gastric cancer.
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Abstract
Inhibitor of kappa B kinase epsilon (IKKε) and TANK-binding kinase 1 (TBK1) are non-canonical IKKs. IKKε and TBK1 share the kinase domain and are similar in their ability to activate the nuclear factor-kappa B signaling pathway. IKKε and TBK1 are overexpressed through multiple mechanisms in various human cancers. However, the expression of IKKε and TBK1 in gastric cancer and their role in prognosis have not been studied. To investigate overexpression of the IKKε and TBK1 proteins in gastric cancer and their relationship with clinicopathologic factors, we performed immunohistochemical staining using a tissue microarray. Tissue microarray samples were obtained from 1,107 gastric cancer patients who underwent R0 gastrectomy with extensive lymph node dissection and adjuvant chemotherapy. We identified expression of IKKε in 150 (13.6%) and TBK1 in 38 (3.4%) gastric cancers. Furthermore, co-expression of IKKε and TBK1 was identified in 1.5% of cases. Co-expression of IKKε and TBK1 was associated with differentiated intestinal histology and earlier T stage. In a multivariate binary logistic regression model, intestinal histologic type by Lauren classification and early AJCC stage were significant predictors for expression of IKKε and TBK1 proteins in gastric cancer. Changes in IKKε and TBK1 expression may be involved in the development of intestinal-type gastric cancer. The overexpression of IKKε and TBK1 should be considered in selected patients with intestinal-type gastric cancer. In conclusion, this is the first large-scale study investigating the relationships between expression of IKKε and TBK1 and clinicopathologic features of gastric cancer. The role of IKKε and TBK1 in intestinal-type gastric cancer pathogenesis should be elucidated by further investigation.
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Polymorphisms of miR-196a2 (rs11614913) and miR-605 (rs2043556) confer susceptibility to gastric cancer. GENE REPORTS 2017. [DOI: 10.1016/j.genrep.2017.04.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Tian J, Hu X, Gao W, Zhang J, Chen M, Zhang X, Ma J, Yuan H. Identification of the long non‑coding RNA LET as a novel tumor suppressor in gastric cancer. Mol Med Rep 2017; 15:2229-2234. [PMID: 28260083 DOI: 10.3892/mmr.2017.6263] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Accepted: 11/15/2016] [Indexed: 01/17/2023] Open
Abstract
Long non-coding RNAs (lncRNAs) have emerged recently as important factors in regulating fundamental biological processes. Alterations in the expression and function of lncRNAs have been observed to promote tumor formation, progression and metastasis. Although downregulation of the expression levels of LET lncRNA in several tumors has been reported, its role in gastric cancer remains unknown. The aim of the present study was to investigate the expression and function of LET in gastric cancer development. The expression levels of LET in 37 pairs of gastric cancer and adjacent non‑tumor tissues were detected by reverse transcription‑quantitative polymerase chain reaction (RT‑qPCR). In addition, LET expression in gastric cancer cell lines was analyzed by RT‑qPCR assay analysis. Furthermore, the impact of LET on cell proliferation, migration and apoptosis were detected using the cell counting kit‑8, wound scratch and ELISA assays, respectively. The results demonstrated that the expression level of LET was downregulated in gastric cancer tissues and cell lines (SGC‑7901 and MGC‑803) compared with normal tissues and a normal human gastric epithelial cell line (GES‑1). Restoration of LET expression using a synthesized recombinant overexpression vector transfected into SGC‑7901 and MGC‑803 cells, significantly inhibited cell proliferation and migration, and promoted cell apoptosis in vitro. The present study is the first to demonstrate that LET may function as a tumor suppressor in gastric cancer. The results indicate that LET may be a promising biomarker and/or a therapeutic target for gastric cancer.
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Affiliation(s)
- Jingjing Tian
- Department of Gastroenterology, NanKai Hospital, Tianjin 300100, P.R. China
| | - Xibao Hu
- First Teaching Hospital, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, P.R. China
| | - Wei Gao
- Department of Gastroenterology, NanKai Hospital, Tianjin 300100, P.R. China
| | - Jie Zhang
- Department of Gastroenterology, NanKai Hospital, Tianjin 300100, P.R. China
| | - Ming Chen
- Department of Gastroenterology, NanKai Hospital, Tianjin 300100, P.R. China
| | - Xinrong Zhang
- Department of Gastroenterology, NanKai Hospital, Tianjin 300100, P.R. China
| | - Junhong Ma
- Department of Gastroenterology, NanKai Hospital, Tianjin 300100, P.R. China
| | - Hongxia Yuan
- School of Management, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, P.R. China
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Qin H, Cai A, Xi H, Yuan J, Chen L. ZnRF3 Induces Apoptosis of Gastric Cancer Cells by Antagonizing Wnt and Hedgehog Signaling. Cell Biochem Biophys 2017; 73:361-367. [PMID: 27352324 DOI: 10.1007/s12013-015-0607-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A large proportion of malignant cancers of the stomach are gastric adenocarcinoma type. In spite of many studies, the molecular basis for this cancer is still unclear. Deregulated cell proliferative signaling via Wnt/β-catenin and Hedgehog pathways is considered important in the pathogenesis of many cancers including the gastric cancer. Recent studies identified ZnRF3 protein, which is a E3-ubiquitin ligase and which is either deleted or mutated in cancers, to inhibit Wnt signaling. However, the significance of ZnRF3 in the control of gastric cancer and whether it also regulates Hedgehog signaling pathway, is not known. In the present study, we assessed the expression of ZnRF3 in gastric tumors and paracancerous tissues from 58 patients (44 male and 14 female) of different ages and related this to patient survival. We observed a clear relationship between ZnRF3 expression in paracancerous tissue and tumor size. Also, ZnRF3 expression was much higher in tumors from aged patients. Male patients showed higher mortality than the females. Mechanistic studies using normal gastric cells (GES1) and gastric cancer cells (MGC-803) infected with either AdZnRF3 or AdGFP viral vectors, revealed that ZnRF3 overexpression causes significantly more apoptosis and lowered proliferation of cancer cells. ZnRF3 overexpression led to greatly reduced levels of Lgr5, a component of Wnt signaling and also Gli1, a component of Hedgehog signaling. Thus, ZnRF3 negatively influences both the Wnt and Hedgehog proliferative pathways, and probably this way it negatively regulates cancer progression. These results suggest the importance of normal ZnRF3 function in checking the progression of cancer cell growth and indicate that a lack of this protein can lead to poorer clinical outcomes for gastric cancer patients.
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Affiliation(s)
- Hongzhen Qin
- Department of General Surgery, Chinese PLA General Hospital, Beijing, China
| | - Aizhen Cai
- Department of General Surgery, Chinese PLA General Hospital, Beijing, China
| | - Hongqing Xi
- Department of General Surgery, Chinese PLA General Hospital, Beijing, China
| | - Jing Yuan
- Department of Pathology, Chinese PLA General Hospital, Beijing, China
| | - Lin Chen
- Department of General Surgery, Chinese PLA General Hospital, Beijing, China.
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Chen J, Ying X, Zhang L, Xiang X, Xiong J. Influence of TS and ABCB1 gene polymorphisms on survival outcomes of 5‑FU-based chemotherapy in a Chinese population of advanced gastric cancer patients. Wien Klin Wochenschr 2017; 129:420-426. [DOI: 10.1007/s00508-016-1147-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Accepted: 11/28/2016] [Indexed: 12/27/2022]
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Cheng XJ, Lin JC, Ding YF, Zhu L, Ye J, Tu SP. Survivin inhibitor YM155 suppresses gastric cancer xenograft growth in mice without affecting normal tissues. Oncotarget 2016; 7:7096-109. [PMID: 26771139 PMCID: PMC4872771 DOI: 10.18632/oncotarget.6898] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Accepted: 12/31/2015] [Indexed: 01/06/2023] Open
Abstract
Survivin overexpression is associated with poor prognosis of human gastric cancer, and is a target for gastric cancer therapy. YM155 is originally identified as a specific inhibitor of survivin. In this study, we investigated the antitumor effect of YM155 on human gastric cancer. Our results showed that YM155 treatment significantly inhibited cell proliferation, reduced colony formation and induced apoptosis of gastric cancer cells in a dose-dependent manner. Accordingly, YM155 treatment significantly decreased survivin expression without affecting XIAP expression and increased the cleavage of apoptosis-associated proteins caspase 3, 7, 8, 9. YM155 significantly inhibited sphere formation of gastric cancer cells, suppressed expansion and growth of the formed spheres (cancer stem cell-like cells, CSCs) and downregulated the protein levels of β-catenin, c-Myc, Cyclin D1 and CD44 in gastric cancer cells. YM155 infusion at 5 mg/kg/day for 7 days markedly inhibited growth of gastric cancer xenograft in a nude mouse model. Immunohistochemistry staining and Western Blot showed that YM155 treatment inhibited expression of survivin and CD44, induced apoptosis and reduced CD44+ CSCs in xenograft tumor tissues in vivo. No obvious pathological changes were observed in organs (e.g. heart, liver, lung and kidney) in YM155-treated mice. Our results demonstrated that YM155 inhibits cell proliferation, induces cell apoptosis, reduces cancer stem cell expansion, and inhibits xenograft tumor growth in gastric cancer cells. Our results elucidate a new mechanism by which YM155 inhibits gastric cancer growth by inhibition of CSCs. YM155 may be a promising agent for gastric cancer treatment.
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Affiliation(s)
- Xiao Jiao Cheng
- Department of Oncology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Jia Cheng Lin
- Department of Oncology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Yan Fei Ding
- Department of Gastroenterology, Ruijin Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Liming Zhu
- Department of Oncology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Jing Ye
- Pôle Sino-Français de Recherches en Sciences du Vivant et Génomique, Ruijin Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Shui Ping Tu
- Department of Oncology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
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Shi H, Wang X, Wang J, Pan J, Liu J, Ye B. Association between CHFR gene hypermethylation and gastric cancer risk: a meta-analysis. Onco Targets Ther 2016; 9:7409-7414. [PMID: 27994471 PMCID: PMC5153312 DOI: 10.2147/ott.s118070] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND The association between the hypermethylation of CHFR gene and gastric cancer risk has been investigated by a number of studies. However, the sample size of the majority of these studies was very small. To get a more a convincing conclusion, here we performed a meta-analysis of the previously published studies to assess the association between CHFR methylation and the risk of gastric cancer. METHODS Eligible studies were identified by searching the MEDLINE/PubMed, Embase, and Web of Science databases before May 2016 without any language restriction. The strength of the association was estimated by odds ratio with its 95% confidence interval (CI). RESULTS Totally 1,399 samples, including 758 gastric cancer cases and 641 controls, from 13 studies were included in the present meta-analysis. Compared with non-cancer controls, the pooled OR of CHFR methylation in gastric cancer patients was 9.08 (95% CI: 6.40-12.88, P<0.001), suggesting that the methylation of CHFR was significantly associated with increased risk of gastric cancer. Similar results were observed when subgroup analyses were performed stratified by country, ethnicity, and methylation testing methods. CONCLUSION Our meta-analysis showed a strong positive correlation between CHFR methylation and risk of gastric cancer, suggesting that CHFR methylation might be a promising biomarker for the diagnosis of gastric cancer.
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Affiliation(s)
- Hua Shi
- Department of Gastroenterology, Lishui Central Hospital, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui Hospital of Zhejiang University, Lishui, People's Republic of China
| | - Xiaojing Wang
- Department of Gastroenterology, Lishui Central Hospital, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui Hospital of Zhejiang University, Lishui, People's Republic of China
| | - Jianbo Wang
- Department of Gastroenterology, Lishui Central Hospital, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui Hospital of Zhejiang University, Lishui, People's Republic of China
| | - Jundi Pan
- Department of Gastroenterology, Lishui Central Hospital, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui Hospital of Zhejiang University, Lishui, People's Republic of China
| | - Junwei Liu
- Department of Gastroenterology, Lishui Central Hospital, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui Hospital of Zhejiang University, Lishui, People's Republic of China
| | - Bin Ye
- Department of Gastroenterology, Lishui Central Hospital, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui Hospital of Zhejiang University, Lishui, People's Republic of China
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Oh S, Kim N, Kwon JW, Shin CM, Choi YJ, Lee DH, Jung HC. Effect of Helicobacter pylori Eradication and ABO Genotype on Gastric Cancer Development. Helicobacter 2016; 21:596-605. [PMID: 27191536 DOI: 10.1111/hel.12317] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND Evidence is lacking regarding how Helicobacter pylori infection status, eradication history, and ABO blood type affect the development of gastric cancer (GC) given the multifactorial and distinctive etiology according to cancer location (noncardia vs cardia) and histologic type (intestinal vs diffuse-type). We evaluated the effect of H. pylori infection status incorporated with H. pylori eradication history and ABO genotype on GC development according to cancer location and histologic type. METHODS A case-control study of 997 patients with noncardia GC (NCGC) and 1147 control subjects was performed using risk analyses with 14 factors including H. pylori infection with eradication history and ABO genotype. As final analyses, multivariable logistic regression models were fitted. Additionally, H. pylori infection status with eradication history was tested for its association with age, atrophic gastritis (AG), and intestinal metaplasia (IM). RESULTS The ABO genotype with the B allele was associated with a significantly lower risk of NCGC of both histologic types. The reduction in risk for NCGC by adding the B allele was more prominent in diffuse-type than that in the intestinal-type. H. pylori infection with eradication history was associated with a significantly lower risk of NCGC of both histologic types, compared with those without eradication history (odds ratio (OR), 0.22; 95% confidence interval (CI), 0.14-0.34) approaching that of uninfected subjects. Past infection status without an eradication history was associated with older age, AG, and IM. CONCLUSIONS H. pylori eradication and the B allele decreased the risks of the intestinal and diffuse-types of NCGC. H. pylori eradication revealed a strong association against developing NCGC. Therefore, it should be considered as a primary measure in NCGC prevention.
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Affiliation(s)
- Sooyeon Oh
- Department of Internal Medicine and Liver Research Institute, Seoul National University, College of Medicine, Seoul, Korea
| | - Nayoung Kim
- Department of Internal Medicine and Liver Research Institute, Seoul National University, College of Medicine, Seoul, Korea.,Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Jin-Won Kwon
- College of Pharmacy and Research, Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu, Korea
| | - Cheol Min Shin
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Yoon Jin Choi
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Dong Ho Lee
- Department of Internal Medicine and Liver Research Institute, Seoul National University, College of Medicine, Seoul, Korea.,Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Hyun Chae Jung
- Department of Internal Medicine and Liver Research Institute, Seoul National University, College of Medicine, Seoul, Korea
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Feng S, Zheng Z, Feng L, Yang L, Chen Z, Lin Y, Gao Y, Chen Y. Proton pump inhibitor pantoprazole inhibits the proliferation, self-renewal and chemoresistance of gastric cancer stem cells via the EMT/β-catenin pathways. Oncol Rep 2016; 36:3207-3214. [DOI: 10.3892/or.2016.5154] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Accepted: 03/22/2016] [Indexed: 11/06/2022] Open
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Zeng Y, Fu M, Wu GW, Zhang AZ, Chen JP, Lin HY, Fu YA, Jia J, Cai ZD, Wu XJ, Lan P. Upregulation of microRNA-370 promotes cell apoptosis and inhibits proliferation by targeting PTEN in human gastric cancer. Int J Oncol 2016; 49:1589-99. [DOI: 10.3892/ijo.2016.3642] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Accepted: 07/06/2016] [Indexed: 11/06/2022] Open
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Strawberry tannins inhibit IL-8 secretion in a cell model of gastric inflammation. Pharmacol Res 2016; 111:703-712. [PMID: 27473819 DOI: 10.1016/j.phrs.2016.07.028] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Revised: 07/22/2016] [Accepted: 07/22/2016] [Indexed: 02/07/2023]
Abstract
In the present study we chemically profiled tannin-enriched extracts from strawberries and tested their biological properties in a cell model of gastric inflammation. The chemical and biological features of strawberry tannins after in vitro simulated gastric digestion were investigated as well. The anti-inflammatory activities of pure strawberry tannins were assayed to get mechanistic insights. Tannin-enriched extracts from strawberries inhibit IL-8 secretion in TNFα-treated human gastric epithelial cells by dampening the NF-κB signaling. In vitro simulated gastric digestion slightly affected the chemical composition and the biological properties of strawberry tannins. By using pure compounds, we found that casuarictin may act as a pure NF-κB inhibitor while agrimoniin inhibits IL-8 secretion also acting on other biological targets; in our system procyanidin B1 prevents the TNFα-induced effects without interfering with the NF-κB pathway. We conclude that strawberry tannins, even after in vitro simulated gastric digestion, exert anti-inflammatory activities at nutritionally relevant concentrations.
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Guo J, Yu W, Su H, Pang X. Genomic landscape of gastric cancer: molecular classification and potential targets. SCIENCE CHINA-LIFE SCIENCES 2016; 60:126-137. [PMID: 27460193 DOI: 10.1007/s11427-016-0034-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Accepted: 04/06/2016] [Indexed: 12/11/2022]
Abstract
Gastric cancer imposes a considerable health burden worldwide, and its mortality ranks as the second highest for all types of cancers. The limited knowledge of the molecular mechanisms underlying gastric cancer tumorigenesis hinders the development of therapeutic strategies. However, ongoing collaborative sequencing efforts facilitate molecular classification and unveil the genomic landscape of gastric cancer. Several new drivers and tumorigenic pathways in gastric cancer, including chromatin remodeling genes, RhoA-related pathways, TP53 dysregulation, activation of receptor tyrosine kinases, stem cell pathways and abnormal DNA methylation, have been revealed. These newly identified genomic alterations await translation into clinical diagnosis and targeted therapies. Considering that loss-of-function mutations are intractable, synthetic lethality could be employed when discussing feasible therapeutic strategies. Although many challenges remain to be tackled, we are optimistic regarding improvements in the prognosis and treatment of gastric cancer in the near future.
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Affiliation(s)
- Jiawei Guo
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, 200241, China
| | - Weiwei Yu
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, 200241, China
| | - Hui Su
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, 200241, China
| | - Xiufeng Pang
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, 200241, China.
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50
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Gong AM, Li XY, Xie YQ, Jia ZD, Li YX, Zou YY, Xu CQ, Wang ZY. Association between CD14 SNP -159 C/T and gastric cancer: an independent case-control study and an updated meta-analysis. Onco Targets Ther 2016; 9:4337-42. [PMID: 27486336 PMCID: PMC4958350 DOI: 10.2147/ott.s95807] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
PURPOSE The association between CD14 -159C/T polymorphism and the susceptibility to gastric cancer (GC) has been reported. However, the results were inconclusive. In the present study, a case-control study and a meta-analysis were performed to assess the possible association between -159C/T in the CD14 gene and GC risk. PATIENTS AND METHODS Relevant studies were searched in several databases including PubMed, Web of Science, EMBASE, Chinese National Knowledge Infrastructure database, and Wanfang database (last search was performed on December 30, 2015). In addition, a case-control study involving 164 GC cases and 169 controls was also performed in the analysis. Statistical analysis was performed by the software Revman5.3. RESULTS A total of ten published studies and the present case-control study involving 2,844 GC and 3,983 controls were included for the meta-analysis. The analysis result indicated that the T allele of CD14 -159C/T polymorphism did not confer risk for GC (in our study: [P=0.93]; in the meta-analysis: T vs 2N odds ratio =1.28 and 95% confidence interval (CI) =0.95-1.24, [P=0.24]). However, we found a significant association in the recessive model (in our study: TT vs TC+CC [P=0.04]; in the meta-analysis: TT vs TC+CC odds ratio =1.12 and 95% CI =1.01-1.26, [P=0.04]). Furthermore, a subgroup analysis by ethnicity showed that TT genotype was significantly associated with GC in Asian (odds ratio =1.17 and 95% CI =1.02-1.34, [P=0.02]) but not in Caucasian. CONCLUSION Our results highlight the TT genotype of CD14 -159C/T as a genetic susceptibility factor for gastric cancer, particularly, in Asians and population-based controls.
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Affiliation(s)
- Ai-Min Gong
- Department of Internal Medicine of Traditional Chinese Medicine, Hainan Medical University, Hainan; Department of Pathophysiology, Harbin Medical University, Harbin
| | - Xin-Yuan Li
- Department of Pathophysiology, Harbin Medical University, Harbin
| | - Yi-Qiang Xie
- Department of Internal Medicine of Traditional Chinese Medicine, Hainan Medical University, Hainan
| | - Zhan-Dong Jia
- Department of Nephrology, Ningbo Tradition Chinese Medicine Hospital affiliated to Zhejiang Chinese Medical University, Ningbo
| | | | - Yong-Yan Zou
- Department of Nephrology, Jining Tradition Chinese Medicine Hospital, Jining, People's Republic of China
| | - Chang-Qing Xu
- Department of Pathophysiology, Harbin Medical University, Harbin
| | - Zhen-Yu Wang
- Department of Pathophysiology, Harbin Medical University, Harbin
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