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Zhang Y, Qian HS, Hu G, Wang L, Zhu Y. ARID1A is involved in DNA double-strand break repair in gastric cancer. J Gastrointest Oncol 2024; 15:862-872. [PMID: 38989399 PMCID: PMC11231857 DOI: 10.21037/jgo-24-283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2024] [Accepted: 06/18/2024] [Indexed: 07/12/2024] Open
Abstract
Background Defects in DNA damage repair can cause genetic mutations, which in turn can cause different types of cancers. Chromatin remodeling complexes, which help repair damaged DNA, can cause the chromatin structure to change as a result of DNA damage. ARID1A may play a role in the process of DNA damage repair, and arid1a may be related to the occurrence and development of gastric cancer (GC). This study aimed to investigate the mechanism of ARID1A regulating the DNA damage repair of gastric adenocarcinoma cell lines AGS and SGC-7901 and its effect on migration, proliferation and apoptosis. Methods The expression of ARID1A plasmid was detected by Western blot and real-time polymerase chain reaction (PCR). The effect of etoposide (ETO) on the survival rate of AGS and SGC-7901 gastric adenocarcinoma cell lines was detected by MTT assay. The DNA double-strand break model was established by ETO and then passed through the comet assay and immunofluorescence co-localization to observe DNA damage; western blot method was used to detect the effect of ARID1A on the expression of related proteins in DNA damage repair pathway in gastric adenocarcinoma cells; scratch test and colony formation experiments were used to observe ARID1A migration and proliferation of gastric adenocarcinoma cells. The flow cytometry was used to detect the effect of ARID1A on apoptosis of gastric adenocarcinoma cells. Results The expression of mRNA and protein was increased after transfection of ARID1A plasmid. ETO was confirmed by MTT assay to inhibit cell survival in a dose-dependent manner. After the DNA double-strand break model was established by ETO, the expression levels of phospho-ataxia telangiectasia mutated (p-ATM) protein increased in the overexpressed ARID1A group. Meanwhile, the overexpressed ARID1A group had a shortened tail moment, and γ-H2AX and ARID1A co-localized in the DNA damage site of the nucleus. The over-expressed ARID1A group had weaker wound healing ability, reduced number of clone formation, and increased apoptosis rate. Conclusions ARID1A may repair DNA double-strand breaks caused by ETO by p-ATM pathway; ARID1A can inhibit the migration and proliferation of gastric adenocarcinoma cells and promote apoptosis. Our findings indicate that ARID1A could serve as a therapeutic target and biomarker for GC patients.
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Affiliation(s)
- Ying Zhang
- Department of Oncology, Fuyang Cancer Hospital, Fuyang, China
| | - He-Sheng Qian
- Department of Oncology, Fuyang Cancer Hospital, Fuyang, China
| | - Gengwei Hu
- Department of Cardiovascular Medicine, The First Affiliated Hospital with Nanjing Medical University, Nanjing, China
| | - Lu Wang
- Department of Oncology, The First Affiliated Hospital of Wannan Medical College, Wuhu, China
| | - Yiping Zhu
- Department of Oncology, The First Affiliated Hospital of Wannan Medical College, Wuhu, China
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2
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Angelico G, Attanasio G, Colarossi L, Colarossi C, Montalbano M, Aiello E, Di Vendra F, Mare M, Orsi N, Memeo L. ARID1A Mutations in Gastric Cancer: A Review with Focus on Clinicopathological Features, Molecular Background and Diagnostic Interpretation. Cancers (Basel) 2024; 16:2062. [PMID: 38893181 PMCID: PMC11171396 DOI: 10.3390/cancers16112062] [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: 04/02/2024] [Revised: 05/23/2024] [Accepted: 05/28/2024] [Indexed: 06/21/2024] Open
Abstract
AT-rich interaction domain 1 (ARID1A) is a pivotal gene with a significant role in gastrointestinal tumors which encodes a protein referred to as BAF250a or SMARCF1, an integral component of the SWI/SNF (SWItch/sucrose non-fermentable) chromatin remodeling complex. This complex is instrumental in regulating gene expression by modifying the structure of chromatin to affect the accessibility of DNA. Mutations in ARID1A have been identified in various gastrointestinal cancers, including colorectal, gastric, and pancreatic cancers. These mutations have the potential to disrupt normal SWI/SNF complex function, resulting in aberrant gene expression and potentially contributing to the initiation and progression of these malignancies. ARID1A mutations are relatively common in gastric cancer, particularly in specific adenocarcinoma subtypes. Moreover, such mutations are more frequently observed in specific molecular subtypes, such as microsatellite stable (MSS) cancers and those with a diffuse histological subtype. Understanding the presence and implications of ARID1A mutations in GC is of paramount importance for tailoring personalized treatment strategies and assessing prognosis, particularly given their potential in predicting patient response to novel treatment strategies including immunotherapy, poly(ADP) ribose polymerase (PARP) inhibitors, mammalian target of rapamycin (mTOR) inhibitors, and enhancer of zeste 2 polycomb repressive complex 2 subunit (EZH2) inhibitors.
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Affiliation(s)
- Giuseppe Angelico
- Department of Medicine and Surgery, Kore University of Enna, 94100 Enna, Italy;
| | - Giulio Attanasio
- Department of Medical, Surgical Sciences and Advanced Technologies G.F. Ingrassia, Anatomic Pathology, University of Catania, 95123 Catania, Italy;
| | - Lorenzo Colarossi
- Pathology Unit, Department of Experimental Oncology, Mediterranean Institute of Oncology, 95029 Catania, Italy; (L.C.); (C.C.); (E.A.)
| | - Cristina Colarossi
- Pathology Unit, Department of Experimental Oncology, Mediterranean Institute of Oncology, 95029 Catania, Italy; (L.C.); (C.C.); (E.A.)
| | - Matteo Montalbano
- Pathology Unit, Department of Experimental Oncology, Mediterranean Institute of Oncology, 95029 Catania, Italy; (L.C.); (C.C.); (E.A.)
- PhD Program in Precision Medicine, University of Palermo, 90144 Palermo, Italy
| | - Eleonora Aiello
- Pathology Unit, Department of Experimental Oncology, Mediterranean Institute of Oncology, 95029 Catania, Italy; (L.C.); (C.C.); (E.A.)
| | - Federica Di Vendra
- Department of Chemical, Biological and Environmental Chemistry, University of Messina, 98122 Messina, Italy
| | - Marzia Mare
- Medical Oncology Unit, Department of Experimental Oncology, Mediterranean Institute of Oncology, Viagrande, 95029 Catania, Italy
| | - Nicolas Orsi
- Leeds Institute of Medical Research, St James’s University Hospital, The University of Leeds, Leeds LS9 7TF, UK;
| | - Lorenzo Memeo
- Pathology Unit, Department of Experimental Oncology, Mediterranean Institute of Oncology, 95029 Catania, Italy; (L.C.); (C.C.); (E.A.)
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3
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Su L, Yang R, Sheng Y, Ullah S, Zhao Y, Shunjiayi H, Zhao Z, Wang Q. Insights into the oral microbiota in human systemic cancers. Front Microbiol 2024; 15:1369834. [PMID: 38756728 PMCID: PMC11098135 DOI: 10.3389/fmicb.2024.1369834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2024] [Accepted: 04/11/2024] [Indexed: 05/18/2024] Open
Abstract
The oral cavity stands as one of the pivotal interfaces facilitating the intricate interaction between the human body and the external environment. The impact of diverse oral microorganisms on the emergence and progression of various systemic cancers, typified by oral cancer, has garnered increasing attention. The potential pathogenicity of oral bacteria, notably the anaerobic Porphyromonas gingivalis and Fusobacterium nucleatum, has been extensively studied and exhibits obvious correlation with different carcinoma types. Furthermore, oral fungi and viruses are closely linked to oropharyngeal carcinoma. Multiple potential mechanisms of oral microbiota-induced carcinogenesis have been investigated, including heightened inflammatory responses, suppression of the host immune system, influence on the tumor microenvironment, anti-apoptotic activity, and promotion of malignant transformation. The disturbance of microbial equilibrium and the migration of oral microbiota play a pivotal role in facilitating oncogenic functions. This review aims to comprehensively outline the pathogenic mechanisms by which oral microbiota participate in carcinogenesis. Additionally, this review delves into their potential applications in cancer prevention, screening, and treatment. It proves to be a valuable resource for researchers investigating the intricate connection between oral microbiota and systemic cancers.
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Affiliation(s)
- Lan Su
- Key Laboratory of Artificial Organs and Computational Medicine in Zhejiang Province, Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, Shulan International Medical College, Zhejiang Shuren University, Hangzhou, Zhejiang, China
| | - Rui Yang
- Key Laboratory of Artificial Organs and Computational Medicine in Zhejiang Province, Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, Shulan International Medical College, Zhejiang Shuren University, Hangzhou, Zhejiang, China
| | - Yanan Sheng
- Key Laboratory of Artificial Organs and Computational Medicine in Zhejiang Province, Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, Shulan International Medical College, Zhejiang Shuren University, Hangzhou, Zhejiang, China
| | - Saif Ullah
- Department of Microbiology School of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Yuheng Zhao
- College of Biology and Environmental Engineering, Zhejiang Shuren University, Hangzhou, Zhejiang, China
| | - Hu Shunjiayi
- School of Stomatology, Zhejiang Chinese Medical University, Hangzhou, China
| | - Zhuo Zhao
- Department of Computer Science and Engineering, University of Notre Dame, Notre Dame, IN, United States
| | - Qingjing Wang
- Key Laboratory of Artificial Organs and Computational Medicine in Zhejiang Province, Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, Shulan International Medical College, Zhejiang Shuren University, Hangzhou, Zhejiang, China
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4
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Salnikov MY, MacNeil KM, Mymryk JS. The viral etiology of EBV-associated gastric cancers contributes to their unique pathology, clinical outcomes, treatment responses and immune landscape. Front Immunol 2024; 15:1358511. [PMID: 38596668 PMCID: PMC11002251 DOI: 10.3389/fimmu.2024.1358511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Accepted: 03/14/2024] [Indexed: 04/11/2024] Open
Abstract
Epstein-Barr virus (EBV) is a pathogen known to cause a number of malignancies, often taking years for them to develop after primary infection. EBV-associated gastric cancer (EBVaGC) is one such malignancy, and is an immunologically, molecularly and pathologically distinct entity from EBV-negative gastric cancer (EBVnGC). In comparison with EBVnGCs, EBVaGCs overexpress a number of immune regulatory genes to help form an immunosuppressive tumor microenvironment (TME), have improved prognosis, and overall have an "immune-hot" phenotype. This review provides an overview of the histopathology, clinical features and clinical outcomes of EBVaGCs. We also summarize the differences between the TMEs of EBVaGCs and EBVnGCs, which includes significant differences in cell composition and immune infiltration. A list of available EBVaGC and EBVnGC gene expression datasets and computational tools are also provided within this review. Finally, an overview is provided of the various chemo- and immuno-therapeutics available in treating gastric cancers (GCs), with a focus on EBVaGCs.
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Affiliation(s)
- Mikhail Y. Salnikov
- Department of Microbiology and Immunology, Western University, London, ON, Canada
| | - Katelyn M. MacNeil
- Department of Microbiology and Immunology, Western University, London, ON, Canada
| | - Joe S. Mymryk
- Department of Microbiology and Immunology, Western University, London, ON, Canada
- Department of Oncology, Western University, London, ON, Canada
- Department of Otolaryngology, Western University, London, ON, Canada
- Lawson Health Research Institute, London, ON, Canada
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5
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Hwang I, Cho Y, Kang SY, Kim DG, Ahn S, Lee J, Kim KM. Comparative analysis of ARID1A mutations with mRNA levels and protein expression in gastric carcinoma. Pathol Res Pract 2024; 255:155063. [PMID: 38324965 DOI: 10.1016/j.prp.2023.155063] [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: 11/27/2023] [Revised: 12/21/2023] [Accepted: 12/24/2023] [Indexed: 02/09/2024]
Abstract
The ARID1A gene is pivotal in chromatin remodeling and genomic integrity and is frequently mutated in various cancer types. ARID1A mutation is the second most frequently mutated tumor suppressor gene and has been suggested as a predictor of immunotherapeutic responsiveness in gastric carcinoma (GC). Despite its significance, the relationship among ARID1A somatic mutations, RNA expression levels, and protein expression remains unclear, particularly in GC. For this purpose, we performed comparative study in two cohorts. Cohort 1 used next-generation sequencing (NGS) to identify 112 GC cases with ARID1A mutations. These cases were compared with ARID1A immunohistochemistry (IHC) results. Cohort 2 employed microarray gene expression data to assess ARID1A RNA levels and compare them with ARID1A IHC results. In Cohort 1, 38.4% of ARID1A-mutated GC exhibited a complete loss of ARID1A protein when assessed by IHC, whereas the remaining 61.6% displayed intact ARID1A. Discordance between NGS and IHC results was not associated with specific mutation sites, variant classifications, or variant allele frequencies. In Cohort 2, 24.1% of the patients demonstrated a loss of ARID1A protein, and there was no significant difference in mRNA levels between the ARID1A protein-intact and -loss groups. Our study revealed a substantial discrepancy between ARID1A mutations detected using NGS and protein expression assessed using IHC in GC. Moreover, ARID1A mRNA expression levels did not correlate well with protein expression. These findings highlighted the complexity of ARID1A expression in GC.
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Affiliation(s)
- Inwoo Hwang
- Department of Pathology and Translational Genomics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Yunjoo Cho
- Department of Pathology and Translational Genomics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - So Young Kang
- Department of Pathology and Translational Genomics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Deok Geun Kim
- Department of Pathology and Translational Genomics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Soomin Ahn
- Department of Pathology and Translational Genomics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Jeeyun Lee
- Department of Medicine, Division of Hematology-Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Kyoung-Mee Kim
- Department of Pathology and Translational Genomics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea.
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6
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Li JJ, Lee CS. The Role of the AT-Rich Interaction Domain 1A Gene ( ARID1A) in Human Carcinogenesis. Genes (Basel) 2023; 15:5. [PMID: 38275587 PMCID: PMC10815128 DOI: 10.3390/genes15010005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 12/13/2023] [Accepted: 12/14/2023] [Indexed: 01/27/2024] Open
Abstract
The switch/sucrose non-fermentable (SWI/SNF) (SWI/SNF) complex uses energy from ATP hydrolysis to mobilise nucleosomes on chromatin. Components of SWI/SNF are mutated in 20% of all human cancers, of which mutations in AT-rich binding domain protein 1A (ARID1A) are the most common. ARID1A is mutated in nearly half of ovarian clear cell carcinoma and around one-third of endometrial and ovarian carcinomas of the endometrioid type. This review will examine in detail the molecular functions of ARID1A, including its role in cell cycle control, enhancer regulation, and the prevention of telomerase activity. ARID1A has key roles in the maintenance of genomic integrity, including DNA double-stranded break repair, DNA decatenation, integrity of the cohesin complex, and reduction in replication stress, and is also involved in mismatch repair. The role of ARID1A loss in the pathogenesis of some of the most common human cancers is discussed, with a particular emphasis on gynaecological cancers. Finally, several promising synthetic lethal strategies, which exploit the specific vulnerabilities of ARID1A-deficient cancer cells, are briefly mentioned.
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Affiliation(s)
- Jing Jing Li
- Department of Anatomical Pathology, Liverpool Hospital, Liverpool, NSW 2170, Australia;
- Ingham Institute for Applied Medical Research, Liverpool, NSW 2170, Australia
| | - Cheok Soon Lee
- Department of Anatomical Pathology, Liverpool Hospital, Liverpool, NSW 2170, Australia;
- Discipline of Pathology, School of Medicine, Western Sydney University, Sydney, NSW 2560, Australia
- South Western Sydney Clinical School, University of New South Wales, Liverpool, NSW 2170, Australia
- Department of Tissue Pathology and Diagnostic Oncology, Royal Prince Alfred Hospital, Camperdown, NSW 2010, Australia
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7
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Talari FF, Bozorg A, Zeinali S, Zali M, Mohsenifar Z, Asadzadeh Aghdaei H, Baghaei K. Low incidence of microsatellite instability in gastric cancers and its association with the clinicopathological characteristics: a comparative study. Sci Rep 2023; 13:21743. [PMID: 38065969 PMCID: PMC10709324 DOI: 10.1038/s41598-023-48157-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Accepted: 11/22/2023] [Indexed: 12/18/2023] Open
Abstract
Gastric cancer is a complex heterogeneous disease with different molecular subtypes that have clinical implications. It is characterized by high mortality rates and limited effective therapies. Microsatellite instability (MSI) has been recognized as a subgroup with a good prognosis based on TCGA and ACRG categorizations. Besides its prognostic and predictive value, gastric cancers with high MSI exhibit different clinical behaviors. The prevalence of high MSI has been assessed in gastric cancer worldwide, especially in East Asia, but there is a lack of such information in the Middle East. Therefore, this study aimed to investigate the incidence and status of MSI in Iranian gastric cancer patients using 53 samples collected from 2015 to 2020 at Taleghani Hospital Medical Center. DNA from tumoral and normal tissues were extracted and assessed through multiplex-PCR based on five mononucleotide repeats panel. Clinicopathological variables, including age, sex, Lauren classification, lymph node involvement, TNM stage, differentiation, localization, and tumor size, were also analyzed. With 2 males and 2 females, high microsatellite instability represented a small subgroup of almost 7.5% of the samples with a median age of 60.5 years. High microsatellite instability phenotypes were significantly associated with patients aged 68 years and older (p‑value of 0.0015) and lower lymph node involvement (p‑value of 0.0004). Microsatellite instability was also more frequent in females, with distal gastric location, bigger tumor size, and in the intestinal type of gastric cancer rather than the diffuse type.
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Affiliation(s)
| | - Ali Bozorg
- Biotechnology Department, College of Science, University of Tehran, Tehran, Iran.
| | - Sirous Zeinali
- Dr. Zeinali's Medical Genetics Laboratory, Kawsar Human Genetics Research Center, Tehran, Iran
- Department of Molecular Medicine, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran
| | - Mohammadreza Zali
- Research Institute for Gastroenterology and Liver Diseases, Gastroenterology and Liver Diseases Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Zhale Mohsenifar
- Department of Pathology, School of Medicine, Taleghani Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hamid Asadzadeh Aghdaei
- Research Institute for Gastroenterology and Liver Diseases, Gastroenterology and Liver Diseases Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Kaveh Baghaei
- Research Institute for Gastroenterology and Liver Diseases, Gastroenterology and Liver Diseases Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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8
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Zhang X, Zhang Y, Zhang Q, Lu M, Chen Y, Zhang X, Zhang P. Role of AT-rich interaction domain 1A in gastric cancer immunotherapy: Preclinical and clinical perspectives. J Cell Mol Med 2023; 28:e18063. [PMID: 38041544 PMCID: PMC10902580 DOI: 10.1111/jcmm.18063] [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: 09/13/2023] [Revised: 10/31/2023] [Accepted: 11/14/2023] [Indexed: 12/03/2023] Open
Abstract
The application of immune checkpoint inhibitor (ICI) using monoclonal antibodies has brought about a profound transformation in the clinical outcomes for patients grappling with advanced gastric cancer (GC). Nonetheless, despite these achievements, the quest for effective functional biomarkers for ICI therapy remains constrained. Recent research endeavours have shed light on the critical involvement of modified epigenetic regulators in the pathogenesis of gastric tumorigenesis, thus providing a glimpse into potential biomarkers. Among these regulatory factors, AT-rich interaction domain 1A (ARID1A), a pivotal constituent of the switch/sucrose non-fermentable (SWI/SNF) complex, has emerged as a promising candidate. Investigations have unveiled the pivotal role of ARID1A in bridging the gap between genome instability and the reconfiguration of the tumour immune microenvironment, culminating in an enhanced response to ICI within the landscape of gastric cancer treatment. This all-encompassing review aims to dissect the potential of ARID1A as a valuable biomarker for immunotherapeutic approaches in gastric cancer, drawing from insights garnered from both preclinical experimentation and clinical observations.
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Affiliation(s)
- Xuemei Zhang
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Youzhi Zhang
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- School of Pharmacy, Hubei University of Science and Technology, Xianning, China
| | - Qiaoyun Zhang
- School of Pharmacy, Hubei University of Science and Technology, Xianning, China
| | - Mengyao Lu
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yuan Chen
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiaoyu Zhang
- Division of Gastrointestinal Surgery, Department of General Surgery, Huai'an Second People's Hospital, the Affiliated Huai'an Hospital of Xuzhou Medical University, Huaian, China
| | - Peng Zhang
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Kim JY, Park CK, Noh S, Cheong JH, Noh SH, Kim H. Prognostic Significance of ARID1A Expression Patterns Varies with Molecular Subtype in Advanced Gastric Cancer. Gut Liver 2023; 17:753-765. [PMID: 36789575 PMCID: PMC10502505 DOI: 10.5009/gnl220342] [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: 08/04/2022] [Revised: 11/23/2022] [Accepted: 11/23/2022] [Indexed: 02/16/2023] Open
Abstract
Background/Aims AT-rich interactive domain 1A (ARID1A) is frequently mutated in gastric cancer (GC), especially Epstein-Barr virus (EBV)-associated and microsatellite instability high GC. The loss of ARID1A expression has been reported as a poor prognostic marker in GC. However, the relationships between ARID1A alteration and EBV-associated and microsatellite instability high GC, which are known to have a favorable prognosis, has hampered proper evaluation of the prognostic significance of ARID1A expression in GC. We aimed to analyze the true prognostic significance of ARID1A expression by correcting confounding variables. Methods We evaluated the ARID1A expression in a large series (n=1,032) of advanced GC and analyzed the relationships between expression pattern and variable parameters, including clinicopathologic factors, key molecular features such as EBV-positivity, mismatch repair protein deficiency, and expression of p53 and several receptor tyrosine kinases including human epidermal growth factor receptor 2, epidermal growth factor receptor, and mesenchymal-epithelial transition factor. Survival analysis of the molecular subtypes was done according to the ARID1A expression patterns. Results Loss of ARID1A expression was found in 52.5% (53/101) of mutL homolog 1 (MLH1)-deficient and 35.8% (24/67) of EBV-positive GCs, compared with only 9.6% (82/864) of the MLH1-proficient and EBV-negative group (p<0.001). The loss of ARID1A expression was associated only with MLH1 deficiency and EBV positivity. On survival analysis, the loss of ARID1A expression was associated with worse prognosis only in MLH1-proficient and EBV-negative GC. Multivariate analysis revealed that both loss of ARID1A and decreased ARID1A expression were independent worse prognostic factors in patients with advanced GC. Conclusions Only in MLH1-proficient and EBV-negative GC, the loss of ARID1A expression is related to poorer prognosis.
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Affiliation(s)
- Jun Yong Kim
- Department of Pathology, Yonsei University College of Medicine, Seoul, Korea
| | - Cheol Keun Park
- Department of Pathology, Yonsei University College of Medicine, Seoul, Korea
| | - Songmi Noh
- Department of Pathology, CHA Gangnam Medical Center, CHA University, Seoul, Korea
| | - Jae-Ho Cheong
- Department of Surgery, Yonsei University College of Medicine, Seoul, Korea
| | - Sung Hoon Noh
- Department of Surgery, Yonsei University College of Medicine, Seoul, Korea
| | - Hyunki Kim
- Department of Pathology, Yonsei University College of Medicine, Seoul, Korea
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10
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Xu C, Huang KK, Law JH, Chua JS, Sheng T, Flores NM, Pizzi MP, Okabe A, Tan ALK, Zhu F, Kumar V, Lu X, Benitez AM, Lian BSX, Ma H, Ho SWT, Ramnarayanan K, Anene-Nzelu CG, Razavi-Mohseni M, Abdul Ghani SAB, Tay ST, Ong X, Lee MH, Guo YA, Ashktorab H, Smoot D, Li S, Skanderup AJ, Beer MA, Foo RSY, Wong JSH, Sanghvi K, Yong WP, Sundar R, Kaneda A, Prabhakar S, Mazur PK, Ajani JA, Yeoh KG, So JBY, Tan P. Comprehensive molecular phenotyping of ARID1A-deficient gastric cancer reveals pervasive epigenomic reprogramming and therapeutic opportunities. Gut 2023; 72:1651-1663. [PMID: 36918265 DOI: 10.1136/gutjnl-2022-328332] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Accepted: 02/27/2023] [Indexed: 03/16/2023]
Abstract
OBJECTIVE Gastric cancer (GC) is a leading cause of cancer mortality, with ARID1A being the second most frequently mutated driver gene in GC. We sought to decipher ARID1A-specific GC regulatory networks and examine therapeutic vulnerabilities arising from ARID1A loss. DESIGN Genomic profiling of GC patients including a Singapore cohort (>200 patients) was performed to derive mutational signatures of ARID1A inactivation across molecular subtypes. Single-cell transcriptomic profiles of ARID1A-mutated GCs were analysed to examine tumour microenvironmental changes arising from ARID1A loss. Genome-wide ARID1A binding and chromatin profiles (H3K27ac, H3K4me3, H3K4me1, ATAC-seq) were generated to identify gastric-specific epigenetic landscapes regulated by ARID1A. Distinct cancer hallmarks of ARID1A-mutated GCs were converged at the genomic, single-cell and epigenomic level, and targeted by pharmacological inhibition. RESULTS We observed prevalent ARID1A inactivation across GC molecular subtypes, with distinct mutational signatures and linked to a NFKB-driven proinflammatory tumour microenvironment. ARID1A-depletion caused loss of H3K27ac activation signals at ARID1A-occupied distal enhancers, but unexpectedly gain of H3K27ac at ARID1A-occupied promoters in genes such as NFKB1 and NFKB2. Promoter activation in ARID1A-mutated GCs was associated with enhanced gene expression, increased BRD4 binding, and reduced HDAC1 and CTCF occupancy. Combined targeting of promoter activation and tumour inflammation via bromodomain and NFKB inhibitors confirmed therapeutic synergy specific to ARID1A-genomic status. CONCLUSION Our results suggest a therapeutic strategy for ARID1A-mutated GCs targeting both tumour-intrinsic (BRD4-assocatiated promoter activation) and extrinsic (NFKB immunomodulation) cancer phenotypes.
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Affiliation(s)
- Chang Xu
- Cancer and Stem Cell Biology Program, Duke-NUS Medical School, Singapore
| | - Kie Kyon Huang
- Cancer and Stem Cell Biology Program, Duke-NUS Medical School, Singapore
| | - Jia Hao Law
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Joy Shijia Chua
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Taotao Sheng
- Epigenetic and Epigenomic Regulation, Genome Institute of Singapore (GIS), Agency for Science, Technology and Research (A*STAR), Singapore
| | - Natasha M Flores
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Melissa Pool Pizzi
- Department of GI Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Atsushi Okabe
- Department of Molecular Oncology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Angie Lay Keng Tan
- Cancer and Stem Cell Biology Program, Duke-NUS Medical School, Singapore
| | - Feng Zhu
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Vikrant Kumar
- Cancer and Stem Cell Biology Program, Duke-NUS Medical School, Singapore
| | - Xiaoyin Lu
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Ana Morales Benitez
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | | | - Haoran Ma
- Cancer and Stem Cell Biology Program, Duke-NUS Medical School, Singapore
| | - Shamaine Wei Ting Ho
- Epigenetic and Epigenomic Regulation, Genome Institute of Singapore (GIS), Agency for Science, Technology and Research (A*STAR), Singapore
| | | | - Chukwuemeka George Anene-Nzelu
- Cardiovascular Research Institute, National University Health System, Singapore
- Human Genetics, Genome Institute of Singapore (GIS), Agency for Science, Technology and Research (A*STAR), Singapore
- Montreal Heart Institute, Quebec, Québec, Canada
- Department of Medicine, University of Montreal, Quebec, Québec, Canada
| | - Milad Razavi-Mohseni
- Department of Biomedical Engineering and McKusick-Nathans Department of Genetic Medicine, Baltimore, Maryland, USA
| | | | - Su Ting Tay
- Cancer and Stem Cell Biology Program, Duke-NUS Medical School, Singapore
| | - Xuewen Ong
- Cancer and Stem Cell Biology Program, Duke-NUS Medical School, Singapore
| | - Ming Hui Lee
- Cancer and Stem Cell Biology Program, Duke-NUS Medical School, Singapore
| | - Yu Amanda Guo
- Computational and Systems Biology, Genome Institute of Singapore (GIS), Agency for Science, Technology and Research (A*STAR), Singapore
| | | | - Duane Smoot
- Department of Internal Medicine, Meharry Medical College, Nashville, Tennessee, USA
| | - Shang Li
- Cancer and Stem Cell Biology Program, Duke-NUS Medical School, Singapore
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Anders Jacobsen Skanderup
- Computational and Systems Biology, Genome Institute of Singapore (GIS), Agency for Science, Technology and Research (A*STAR), Singapore
| | - Michael A Beer
- Department of Biomedical Engineering and McKusick-Nathans Department of Genetic Medicine, Baltimore, Maryland, USA
| | - Roger Sik Yin Foo
- Cardiovascular Research Institute, National University Health System, Singapore
- Human Genetics, Genome Institute of Singapore (GIS), Agency for Science, Technology and Research (A*STAR), Singapore
| | | | - Kaushal Sanghvi
- Department of General Surgery, Tan Tock Seng Hospital, Singapore
| | - Wei Peng Yong
- Department of Haematology-Oncology, National University Health System, Singapore
- Cancer Science Institute of Singapore, National University of Singapore, Singapore
| | - Raghav Sundar
- Cancer and Stem Cell Biology Program, Duke-NUS Medical School, Singapore
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- Department of Haematology-Oncology, National University Cancer Institute, Singapore
- The N.1 Institute for Health, National University of Singapore, Singapore
- Singapore Gastric Cancer Consortium, Singapore
| | - Atsushi Kaneda
- Department of Molecular Oncology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Shyam Prabhakar
- Computational and Systems Biology, Genome Institute of Singapore (GIS), Agency for Science, Technology and Research (A*STAR), Singapore
| | - Pawel Karol Mazur
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Jaffer A Ajani
- Department of GI Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Khay Guan Yeoh
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- Singapore Gastric Cancer Consortium, Singapore
- Department of Gastroenterology and Hepatology, National University Health System, Singapore
| | - Jimmy Bok-Yan So
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- Singapore Gastric Cancer Consortium, Singapore
- Division of Surgical Oncology, National University Cancer Institute, Singapore
| | - Patrick Tan
- Cancer and Stem Cell Biology Program, Duke-NUS Medical School, Singapore
- Epigenetic and Epigenomic Regulation, Genome Institute of Singapore (GIS), Agency for Science, Technology and Research (A*STAR), Singapore
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- Cancer Science Institute of Singapore, National University of Singapore, Singapore
- Singapore Gastric Cancer Consortium, Singapore
- SingHealth/Duke-NUS Institute of Precision Medicine, National Heart Centre Singapore, Singapore
- Cellular and Molecular Research, National Cancer Centre, Singapore
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11
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Somatic ARID1A mutation stratifies patients with gastric cancer to PD-1 blockade and adjuvant chemotherapy. Cancer Immunol Immunother 2022; 72:1199-1208. [PMID: 36369379 PMCID: PMC10110689 DOI: 10.1007/s00262-022-03326-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Accepted: 11/04/2022] [Indexed: 11/13/2022]
Abstract
Abstract
Background
AT-rich interaction domain 1A (ARID1A) encodes a vital component of switch/sucrose non-fermentable chromatin-remodeling complex. Given its association with genomic instability, we conducted this study to determine whether ARID1A mutation status had an impact on therapeutic responsiveness in gastric cancer (GC), especially combinatory chemo-immunotherapy.
Methods
We retrospectively enrolled a total of 1162 patients from five independent cohorts. ZSHS Cohort and TCGA Cohort were designed to inform chemotherapeutic relevance and immunobiology of ARID1A-mutant GC based on tissue samples and sequencing data, respectively. MSKCC Cohort, mGC Cohort, and Melanoma Cohort were utilized to interrogate the predictive efficacy of ARID1A mutation to programmed cell death protein 1 (PD-1) blockade.
Results
ARID1A mutation was enriched in EBV-positive, hypermutated-single nucleotide variant and microsatellite-unstable subtype GC, and was predictive of responsiveness to both fluorouracil-based chemotherapy and PD-1 blockade. Specifically, ARID1A mutation score was a highly sensitive indicator (91%) of response to pembrolizumab. Mechanistically, ARID1A mutation correlated with extensive DNA damage repair deficiency and immunogenic tumor microenvironment (TME) featured by elevated activated subsets of CD8+ T cells, CD4+ T cells, and NK cells. Type 17T helper cells were typically abundant in ARID1A-mutant GC and might be a precondition for chemosensitivity conferred by ARID1A mutation. Furthermore, ARID1A mutation indicated elevated expression of VEGFA and CLDN18, as well as over-representation of ERBB2 and FGFR2 signaling pathway.
Conclusions
ARID1A-mutant GC displayed immunogenic TME and might be a candidate for both monotherapy and the combination of frontline chemotherapy and PD-1 blockade.
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12
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Kawatoko S, Kohashi K, Torisu T, Sasaki T, Umekita S, Oki E, Nakamura M, Kitazono T, Oda Y. Solid-type poorly differentiated adenocarcinoma of the stomach: A characteristic morphology reveals a distinctive immunoregulatory tumor microenvironment. Pathol Res Pract 2022; 238:154124. [PMID: 36137397 DOI: 10.1016/j.prp.2022.154124] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 09/05/2022] [Accepted: 09/13/2022] [Indexed: 12/12/2022]
Abstract
Solid-type poorly differentiated adenocarcinoma (solid-type-PDA) of the stomach is a unique histological subtype of "tubular adenocarcinoma", but little is known about its clinicopathological features, molecular pathological characteristics and immunoregulatory tumor microenvironment. Herein, we examined the immunohistochemical expressions of mismatch repair (MMR) proteins (MLH1, PMS2, MSH2, MSH6) in 57 cases of solid-type-PDA and classified them as either MMR-deficient or -proficient (dMMR, N = 23; pMMR, N = 34), and additionally identified 18 dMMR-well-differentiated adenocarcinoma (WDA) and 34 pMMR-WDA as control groups. We analyzed and compared solid-type-PDA with WDA by evaluating the immunoexpressions of key immune pathway proteins (programmed death ligand 1 (PD-L1) and indoleamine 2,3-dioxygenase 1 (IDO1)) and tumor-infiltrating lymphocytes (TILs) (CD8, Foxp3 and PD-1). The results reveled IDO1 was significantly more frequent in dMMR-solid-type-PDA than in dMMR-WDA (P = 0.0046). Moreover, dMMR-solid-type-PDA tended to have higher mean CD8+ and Foxp3+ TILs compared with dMMR-WDA [P = 0.0006 (CD8+) and P = 0.1061 (Foxp3+)], and IDO1-positive tended to be associated with a large number of CD8+, Foxp3+ or PD-1+ TILs in almost all tumor subtypes. PD-L1 was significantly observed in 44 % (15/34) of pMMR-solid-type-PDA compared with 18 % (6/34) of pMMR-WDA (P = 0.0344). Although they are molecularly and morphologically classified as the same chromosomal instability subtype, overall survival (OS) and disease-free-survival (DFS) in pMMR-solid-type-PDA were significantly worse than those in pMMR-WDA [P = 0.0216 (OS) and P = 0.0160 (DFS)]. Our study demonstrates that immunoexpressions of several immunoregulatory proteins and TILs are more prevalent in dMMR-solid-type-PDA, potentially a useful discovery for designing tumor treatments with immune checkpoint inhibitors or combination therapies with a PD-1/PD-L1-inhibitor and IDO1-inhibitor.
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Affiliation(s)
- Shinichiro Kawatoko
- Department of Anatomic Pathology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan; Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Kenichi Kohashi
- Department of Anatomic Pathology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Takehiro Torisu
- Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Taisuke Sasaki
- Department of Anatomic Pathology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Shinya Umekita
- Department of Anatomic Pathology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Eiji Oki
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Masafumi Nakamura
- Department of Surgery and Oncology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Takanari Kitazono
- Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Yoshinao Oda
- Department of Anatomic Pathology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
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13
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Ito T, Suzuki O, Kamae N, Tamaru JI, Arai T, Yamaguchi T, Akagi K, Eguchi H, Okazaki Y, Mochiki E, Ishida H. Comprehensive analysis of DNA mismatch repair-deficient gastric cancer in a Japanese hospital-based population. Jpn J Clin Oncol 2021; 51:886-894. [PMID: 33728435 DOI: 10.1093/jjco/hyab026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Accepted: 02/04/2021] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND The attention on mismatch repair-deficient (dMMR) gastric cancer has increased in this era of anti-PD-1 blockade therapy; however, the prevalence and molecular genetics of patients with dMMR gastric cancer have not been completely investigated. METHODS Immunohistochemistry of MMR proteins (MLH1, MSH2, MSH6 and PMS2) was performed on formalin-fixed paraffin-embedded sections prepared from resected primary gastric cancers of 513 consecutive patients. Genetic and/or epigenetic alterations of the MMR genes were also investigated. RESULTS Loss of expression of one or more MMR proteins was observed in 58 patients (11.3%); 54 patients showed loss of MLH1/PMS2, 3 patients showed loss of MLH1/PMS2/MSH6 and 1 patient showed loss of PMS2 alone. Among these 58 patients, 55 showed hypermethylation of the promoter region of MLH1. Genetic testing revealed that the remaining three patients had Lynch syndrome (n = 1) or Lynch-like syndrome (n = 2). A total of 15 patients (25.9% of all patients with dMMR gastric cancer and 2.9% of all patients with gastric cancer), including 11 patients with stage I-III dMMR gastric cancer who had recurrence and 4 patients with stage IV dMMR gastric cancer, are potential candidates for the use of anti-PD-1 blockades. CONCLUSIONS This is the first study to investigate the frequency and molecular genetic mechanisms of dMMR gastric cancer comprehensively, focusing on the benefit of using PD-1 blockades. Our observations will be beneficial in the clinical practice of metastatic gastric cancer.
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Affiliation(s)
- Tetsuya Ito
- Department of Digestive Tract and General Surgery, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - Okihide Suzuki
- Department of Digestive Tract and General Surgery, Saitama Medical Center, Saitama Medical University, Saitama, Japan.,Department of Clinical Genomics, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - Nao Kamae
- Department of Digestive Tract and General Surgery, Saitama Medical Center, Saitama Medical University, Saitama, Japan.,Department of Clinical Genomics, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - Jun-Ichi Tamaru
- Department of Pathology, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - Tomio Arai
- Department of Pathology, Tokyo Metropolitan Geriatric Hospital, Tokyo, Japan
| | - Tatsuro Yamaguchi
- Department of Surgery, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, Tokyo, Japan
| | - Kiwamu Akagi
- Division of Molecular Diagnosis and Cancer Prevention, Saitama Cancer Center, Saitama, Japan
| | - Hidetaka Eguchi
- Diagnostics and Therapeutics of Intractable Diseases and Intractable Disease Research Center, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Yasushi Okazaki
- Diagnostics and Therapeutics of Intractable Diseases and Intractable Disease Research Center, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Erito Mochiki
- Department of Digestive Tract and General Surgery, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - Hideyuki Ishida
- Department of Digestive Tract and General Surgery, Saitama Medical Center, Saitama Medical University, Saitama, Japan
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14
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Loe AKH, Francis R, Seo J, Du L, Wang Y, Kim JE, Hakim SW, Kim JE, He HH, Guo H, Kim TH. Uncovering the dosage-dependent roles of Arid1a in gastric tumorigenesis for combinatorial drug therapy. J Exp Med 2021; 218:211950. [PMID: 33822841 PMCID: PMC8034383 DOI: 10.1084/jem.20200219] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 01/20/2021] [Accepted: 03/05/2021] [Indexed: 12/25/2022] Open
Abstract
Gastric cancer (GC) is one of the most common deadly cancers in the world. Although patient genomic data have identified AT-rich interaction domain 1A (ARID1A), a key chromatin remodeling complex subunit, as the second most frequently mutated gene after TP53, its in vivo role and relationship to TP53 in gastric tumorigenesis remains unclear. Establishing a novel mouse model that reflects the ARID1A heterozygous mutations found in the majority of human GC cases, we demonstrated that Arid1a heterozygosity facilitates tumor progression through a global loss of enhancers and subsequent suppression of the p53 and apoptosis pathways. Moreover, mouse genetic and single-cell analyses demonstrated that the homozygous deletion of Arid1a confers a competitive disadvantage through the activation of the p53 pathway, highlighting its distinct dosage-dependent roles. Using this unique vulnerability of Arid1a mutated GC cells, our combined treatment with the epigenetic inhibitor, TP064, and the p53 agonist, Nutlin-3, inhibited growth of Arid1a heterozygous tumor organoids, providing a novel therapeutic option for GC.
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Affiliation(s)
- Adrian Kwan Ho Loe
- Program in Developmental & Stem Cell Biology, The Hospital for Sick Children, Toronto, Ontario, Canada.,Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada
| | - Roshane Francis
- Program in Developmental & Stem Cell Biology, The Hospital for Sick Children, Toronto, Ontario, Canada.,Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada
| | - Jieun Seo
- Program in Developmental & Stem Cell Biology, The Hospital for Sick Children, Toronto, Ontario, Canada.,Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada.,Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Korea
| | - Lutao Du
- Department of Clinical Laboratory, The Second Hospital of Shandong University, Jinan, Shandong, China.,Tumor Marker Detection Engineering Laboratory of Shandong Province, Jinan, Shandong, China
| | - Yunshan Wang
- Department of Clinical Laboratory, The Second Hospital of Shandong University, Jinan, Shandong, China.,Tumor Marker Detection Engineering Laboratory of Shandong Province, Jinan, Shandong, China
| | - Ji-Eun Kim
- Program in Developmental & Stem Cell Biology, The Hospital for Sick Children, Toronto, Ontario, Canada.,Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada
| | - Shaheed W Hakim
- St. Joseph's Health Centre, Unity Health Toronto, Toronto, Ontario, Canada
| | - Jung-Eun Kim
- Program in Developmental & Stem Cell Biology, The Hospital for Sick Children, Toronto, Ontario, Canada.,Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada
| | - Housheng Hansen He
- Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada.,Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada
| | - Haiyang Guo
- Department of Clinical Laboratory, The Second Hospital of Shandong University, Jinan, Shandong, China.,Tumor Marker Detection Engineering Laboratory of Shandong Province, Jinan, Shandong, China.,Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada
| | - Tae-Hee Kim
- Program in Developmental & Stem Cell Biology, The Hospital for Sick Children, Toronto, Ontario, Canada.,Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada
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15
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Xu S, Tang C. The Role of ARID1A in Tumors: Tumor Initiation or Tumor Suppression? Front Oncol 2021; 11:745187. [PMID: 34671561 PMCID: PMC8521028 DOI: 10.3389/fonc.2021.745187] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Accepted: 09/08/2021] [Indexed: 01/08/2023] Open
Abstract
Genes encoding subunits of SWItch/Sucrose Non-Fermenting (SWI/SNF) chromatin remodeling complexes are collectively mutated in 20% of all human cancers, among which the AT-rich interacting domain-containing protein 1A (ARID1A, also known as BAF250a, B120, C1orf4, Osa1) that encodes protein ARID1A is the most frequently mutated, and mutations in ARID1A have been found in various types of cancer. ARID1A is thought to play a significant role both in tumor initiation and in tumor suppression, which is highly dependent upon context. Recent molecular mechanistic research has revealed that ARID1A participates in tumor progression through its effects on control of cell cycle, modulation of cellular functions such as EMT, and regulation of various signaling pathways. In this review, we synthesize a mechanistic understanding of the role of ARID1A in human tumor initiation as well as in tumor suppression and further discuss the implications of these new discoveries for potential cancer intervention. We also highlight the mechanisms by which mutations affecting the subunits in SWI/SNF complexes promote cancer.
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16
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Overview of Epstein-Barr-Virus-Associated Gastric Cancer Correlated with Prognostic Classification and Development of Therapeutic Options. Int J Mol Sci 2020; 21:ijms21249400. [PMID: 33321820 PMCID: PMC7764600 DOI: 10.3390/ijms21249400] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 12/07/2020] [Accepted: 12/08/2020] [Indexed: 02/08/2023] Open
Abstract
Gastric cancer (GC) is a deadly disease with poor prognosis that is characterized by heterogeneity. New classifications based on histologic features, genotypes, and molecular phenotypes, for example, the Cancer Genome Atlas subtypes and those by the Asian Cancer Research Group, help understand the carcinogenic differences in GC and have led to the identification of an Epstein–Barr virus (EBV)-related GC subtype (EBVaGC), providing new indications for tailored treatment and prognostic factors. This article provides a review of the features of EBVaGC and an update on the latest insights from EBV-related research with a particular focus on the strict interaction between EBV infection and the gastric tumor environment, including the host immune response. This information may help increase our knowledge of EBVaGC pathogenesis and the mechanisms that sustain the immune response of patients since this mechanism has been demonstrated to offer a survival advantage in a proportion of patients with GC.
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17
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Wang R, Chen M, Ye X, Poon K. Role and potential clinical utility of ARID1A in gastrointestinal malignancy. MUTATION RESEARCH-REVIEWS IN MUTATION RESEARCH 2020; 787:108360. [PMID: 34083049 DOI: 10.1016/j.mrrev.2020.108360] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 11/26/2020] [Accepted: 11/29/2020] [Indexed: 12/12/2022]
Abstract
ARID1A (AT-rich interactive domain 1A) is a newly discovered tumor suppressor gene, and its encoded product is an important component of the SWI/SNF chromatin remodeling complex. ARID1A plays an important role in cell proliferation, invasion and metastasis, apoptosis, cell cycle regulation, epithelial mesenchymal transition, and the regulation of other of biological behaviors. Recently, ARID1A mutations have been increasingly reported in esophageal adenocarcinoma, gastric cancer, colorectal cancer, hepatocellular carcinoma, cholangiocarcinoma, pancreatic cancer, and other malignant tumors of the digestive system. This article reviews the relationship between ARID1A mutation and the molecular mechanisms of carcinogenesis, including microsatellite instability and the PI3K/ATK signaling pathway, and relates these mechanisms to the prognostic assessment of digestive malignancy. Further, this review describes the potential for molecular pathologic epidemiology (MPE) to provide new insights into environment-tumor-host interactions.
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Affiliation(s)
- Ruihua Wang
- Department of Gastroenterology, Shenzhen Hospital, Southern Medical University, Shenzhen, 518000, Guangdong Province, China.
| | - Mei Chen
- Department of Gastroenterology, Shenzhen Hospital, Southern Medical University, Shenzhen, 518000, Guangdong Province, China.
| | - Xiaojun Ye
- Program of Food Science and Technology, Division of Science and Technology, Beijing Normal University-Hong Kong Baptist University United International College, Zhuhai, 519085, Guangdong Province, China.
| | - Karen Poon
- Program of Food Science and Technology, Division of Science and Technology, Beijing Normal University-Hong Kong Baptist University United International College, Zhuhai, 519085, Guangdong Province, China.
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18
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Remodeling of the ARID1A tumor suppressor. Cancer Lett 2020; 491:1-10. [PMID: 32738271 DOI: 10.1016/j.canlet.2020.07.026] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 07/06/2020] [Accepted: 07/22/2020] [Indexed: 12/26/2022]
Abstract
In recent years, AT-rich interactive domain-containing protein 1A (ARID1A) has been widely accepted as a bona fide tumor suppressor due to its essential role in preventing tumorigenesis and tumor progression in both mouse and human contexts. ARID1A shows high mutation frequencies in both cancers and preneoplastic lesions. The loss of ARID1A expression in cancer cells leads to increases in cell proliferation, invasion and migration and reductions in cell apoptosis and chemosensitivity. The tumor-suppressive role of ARID1A is mainly attributed to its regulation of gene transcription, which can be induced either directly by chromatin remodeling or indirectly by affecting histone modifications. ARID1A also acts independently of its cardinal transcription-regulating mechanisms, which include interfering with protein-protein interactions. Interestingly, nonmutational mechanisms, such as regulation by DNA hypermethylation, microRNAs, and ubiquitinases/deubiquitinases, have provided another perspective on ARID1A inactivation in cancer. Since the critical tumor-suppressive role of ARID1A has been revealed, several studies have attempted to identify synthetic lethal targets with ARID1A mutation/inactivation as an alternative strategy for cancer treatment.
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19
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Schallenberg S, Bork J, Essakly A, Alakus H, Buettner R, Hillmer AM, Bruns C, Schroeder W, Zander T, Loeser H, Gebauer F, Quaas A. Loss of the SWI/SNF-ATPase subunit members SMARCF1 (ARID1A), SMARCA2 (BRM), SMARCA4 (BRG1) and SMARCB1 (INI1) in oesophageal adenocarcinoma. BMC Cancer 2020; 20:12. [PMID: 31906887 PMCID: PMC6945480 DOI: 10.1186/s12885-019-6425-3] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2019] [Accepted: 12/03/2019] [Indexed: 12/15/2022] Open
Abstract
Background The SWI/SNF complex is an important chromatin remodeler, commonly dysregulated in cancer, with an estimated mutation frequency of 20%. ARID1A is the most frequently mutated subunit gene. Almost nothing is known about the other familiar members of the SWI/SNF complexes, SMARCA2 (BRM), SMARCA4 (BRG1) and SMARCB1 (INI1), in oesophageal adenocarcinoma (EAC). Methods We analysed a large cohort of 685 patients with EAC. We used four different antibodies to detect a loss-of-protein of ARID1A BRM, BRG1 and INI1 by immunohistochemistry and correlated these findings with molecular and clinical data. Results Loss of ARID1A, BRG1, BRM and INI1 was observed in 10.4, 3.4, 9.9 and 2% of EAC. We found a co-existing protein loss of ARID1A and BRM in 9.9% and of ARID1A and BRG1 in 2.2%. Patients with loss of ARID1A and TP53 wildtype EACs showed a shortened overall survival compared with AIRDA1A-positive tumours [median overall survival was 60.1 months (95%CI 1.2–139.9 months)] in patients with ARIDA-1A expression and 26.2 months (95%CI 3.7–19.1 months) in cases of ARIDA-1A loss (p = 0.044). Tumours with loss or expression of ARID1A and TP53 loss were not associated with a difference in survival. Only one tumour revealed high microsatellite instability (MSI-H) with concomitant ARID1A loss. All other ARID1A loss-EACs were microsatellite-stable (MSS). No predictive relevance was seen for SWI/SNF-complex alterations and simultaneous amplification of different genes (PIK3CA, KRAS, c-MYC, MET, GATA6, ERBB2). Conclusion Our work describes, for the first time, loss of one of the SWI/SNF ATPase subunit proteins in a large number of adenocarcinomas of the oesophagus. Several papers discuss possible therapeutic interventions for tumours showing a loss of function of the SWI/SNF complex, such as PARP inhibitors or PI3K and AKT inhibitors. Future studies will be needed to show whether SWI/SNF complex-deficient EACs may benefit from personalized therapy.
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Affiliation(s)
- Simon Schallenberg
- Institute of Pathology, University of Cologne, Kerpener Str. 62, 50937, Cologne, Germany.
| | - Julian Bork
- Institute of Pathology, University of Cologne, Kerpener Str. 62, 50937, Cologne, Germany
| | - Ahlem Essakly
- Institute of Pathology, University of Cologne, Kerpener Str. 62, 50937, Cologne, Germany
| | - Hakan Alakus
- Department of General, Visceral and Cancer Surgery, University of Cologne, Cologne, Germany
| | - Reinhard Buettner
- Institute of Pathology, University of Cologne, Kerpener Str. 62, 50937, Cologne, Germany
| | - Axel M Hillmer
- Institute of Pathology, University of Cologne, Kerpener Str. 62, 50937, Cologne, Germany
| | - Christiane Bruns
- Department of General, Visceral and Cancer Surgery, University of Cologne, Cologne, Germany
| | - Wolfgang Schroeder
- Department of General, Visceral and Cancer Surgery, University of Cologne, Cologne, Germany
| | - Thomas Zander
- Department I of Internal Medicine, Center for Integrated Oncology (CIO)University of Cologne, Cologne, Germany
| | - Heike Loeser
- Institute of Pathology, University of Cologne, Kerpener Str. 62, 50937, Cologne, Germany
| | - Florian Gebauer
- Department of General, Visceral and Cancer Surgery, University of Cologne, Cologne, Germany
| | - Alexander Quaas
- Institute of Pathology, University of Cologne, Kerpener Str. 62, 50937, Cologne, Germany
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20
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Fang WL, Wu CH, Tseng CH, Huang KH, Chen MH, Li AY, Wu CW. The clinical significance of ARID1A mutations in gastric cancer patients. FORMOSAN JOURNAL OF SURGERY 2020. [DOI: 10.4103/fjs.fjs_66_19] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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21
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Kishida Y, Oishi T, Sugino T, Shiomi A, Urakami K, Kusuhara M, Yamaguchi K, Kitagawa Y, Ono H. Associations Between Loss of ARID1A Expression and Clinicopathologic and Genetic Variables in T1 Early Colorectal Cancer. Am J Clin Pathol 2019; 152:463-470. [PMID: 31263894 DOI: 10.1093/ajcp/aqz062] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
OBJECTIVES To evaluate the relationships between adenine-thymine-rich interactive domain 1A (ARID1A) expression and the clinicopathologic features in T1 colorectal cancer (CRC) and to investigate whether the presence of ARID1A protein is related to genetic changes. METHODS We retrospectively studied 219 surgically resected T1 CRCs. ARID1A expression was assessed by immunohistochemical methods, and the correlation between ARID1A expression and clinicopathologic features was evaluated. The relationship between ARID1A expression and 409 cancer-related gene mutations was also evaluated using next-generation sequencing (NGS). RESULTS Immunohistochemical staining indicated negative ARID1A expression in 4.6%. Loss of ARID1A expression was significantly associated with younger age, lymphatic invasion, and lymph node metastasis (LNM). NGS showed that PKHD1, RNF213, and MSH6 mutations were more frequent in ARID1A-negative tumors, whereas KRAS mutations were more common in ARID1A-positive tumors. CONCLUSIONS In T1 CRC, negative ARID1A expression was correlated with early onset, lymphatic invasion, and LNM. Mutations in some cancer-related genes were possibly related with ARID1A expression.
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Affiliation(s)
- Yoshihiro Kishida
- Division of Endoscopy, Shizuoka Cancer Center, Shizuoka, Japan
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Takuma Oishi
- Division of Pathology, Shizuoka Cancer Center, Shizuoka, Japan
| | - Takashi Sugino
- Division of Pathology, Shizuoka Cancer Center, Shizuoka, Japan
| | - Akio Shiomi
- Division of Colorectal Surgery, Shizuoka Cancer Center, Shizuoka, Japan
| | | | - Masatoshi Kusuhara
- Regional Resources Division, Shizuoka Cancer Center Research Institute, Shizuoka, Japan
| | - Ken Yamaguchi
- Shizuoka Cancer Center Hospital and Research Institute, Shizuoka, Japan
| | - Yuko Kitagawa
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Hiroyuki Ono
- Division of Endoscopy, Shizuoka Cancer Center, Shizuoka, Japan
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22
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Hung YH, Hsu MC, Chen LT, Hung WC, Pan MR. Alteration of Epigenetic Modifiers in Pancreatic Cancer and Its Clinical Implication. J Clin Med 2019; 8:jcm8060903. [PMID: 31238554 PMCID: PMC6617267 DOI: 10.3390/jcm8060903] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 06/15/2019] [Accepted: 06/20/2019] [Indexed: 12/12/2022] Open
Abstract
The incidence of pancreatic cancer has considerably increased in the past decade. Pancreatic cancer has the worst prognosis among the cancers of the digestive tract because the pancreas is located in the posterior abdominal cavity, and most patients do not show clinical symptoms for early detection. Approximately 55% of all patients are diagnosed with pancreatic cancer only after the tumors metastasize. Therefore, identifying useful biomarkers for early diagnosis and screening high-risk groups are important to improve pancreatic cancer therapy. Recent emerging evidence has suggested that genetic and epigenetic alterations play a crucial role in the molecular aspects of pancreatic tumorigenesis. Here, we summarize recent progress in our understanding of the epigenetic alterations in pancreatic cancer and propose potential synthetic lethal strategies to target these genetic defects to treat this deadly disease.
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Affiliation(s)
- Yu-Hsuan Hung
- National Institute of Cancer Research, National Health Research Institutes, Tainan 704, Taiwan.
| | - Ming-Chuan Hsu
- National Institute of Cancer Research, National Health Research Institutes, Tainan 704, Taiwan.
| | - Li-Tzong Chen
- National Institute of Cancer Research, National Health Research Institutes, Tainan 704, Taiwan.
- Division of Hematology/Oncology, Department of Internal Medicine, National Cheng Kung University Hospital, Tainan 704, Taiwan.
| | - Wen-Chun Hung
- National Institute of Cancer Research, National Health Research Institutes, Tainan 704, Taiwan.
- Institute of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
| | - Mei-Ren Pan
- Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
- Center for Cancer Research, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan.
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23
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Tessier-Cloutier B, Cai E, Schaeffer DF. Off-label use of common predictive biomarkers in gastrointestinal malignancies: a critical appraisal. Diagn Pathol 2019; 14:62. [PMID: 31221175 PMCID: PMC6587260 DOI: 10.1186/s13000-019-0843-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Accepted: 06/11/2019] [Indexed: 12/13/2022] Open
Abstract
The use of immunohistochemistry (IHC) as a companion diagnostic is an increasingly important part of the case workup by pathologists and is often central to clinical decision making. New predictive molecular markers are constantly sought for to improve treatment stratification parallel to drug development. Unfortunately, official biomarker guidelines lag behind, and pathologists are often left hesitating when medical oncologists request off-labelled biomarker testing. We performed a literature review of five commonly requested off-label IHC predictive biomarkers in gastrointestinal tract (GIT) malignancies: HER2, mismatch repair (MMR), PD-L1, BRAF V600E and ROS1. We found that HER2 amplification is rare and poorly associated to IHC overexpression in extracolonic and extragastric GIT cancers; however in KRAS wild type colorectal cancers, which fail conventional treatment, HER2 IHC may be useful and should be considered. For MMR testing, more evidence is needed to recommend reflex testing in GIT cancers for treatment purposes. MMR testing should not be discouraged in patients considered for second line checkpoint inhibitor therapy. With the exception of gastric tumors, PD-L1 IHC is a weak predictor of checkpoint inhibitor response in the GIT and should be replaced by MMR in this context. BRAF inhibitors showed activity in BRAF V600E mutated cholangiocarcinomas and pancreatic carcinomas in non-first line settings. ROS1 translocation is extremely rare and poorly correlated to ROS1 IHC expression in the GIT; currently there is no role for ROS1 IHC testing in GIT cancers. Overall, the predictive biomarker literature has grown exponentially, and official guidelines need to be updated more regularly to support pathologists’ testing decisions.
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Affiliation(s)
- Basile Tessier-Cloutier
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC, Canada.,Department of Pathology and Laboratory Medicine, Vancouver General Hospital, 910 West 10th Ave, Vancouver, BC, Canada
| | - Ellen Cai
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC, Canada.,Department of Pathology and Laboratory Medicine, Vancouver General Hospital, 910 West 10th Ave, Vancouver, BC, Canada
| | - David F Schaeffer
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC, Canada. .,Department of Pathology and Laboratory Medicine, Vancouver General Hospital, 910 West 10th Ave, Vancouver, BC, Canada.
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24
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Zhang L, Wang C, Yu S, Jia C, Yan J, Lu Z, Chen J. Loss of ARID1A Expression Correlates With Tumor Differentiation and Tumor Progression Stage in Pancreatic Ductal Adenocarcinoma. Technol Cancer Res Treat 2019; 17:1533034618754475. [PMID: 29486633 PMCID: PMC5833159 DOI: 10.1177/1533034618754475] [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: 01/15/2023] Open
Abstract
Mutations in the AT-rich interactive domain 1A gene, which encodes a subunit of the Switch/Sucrose nonfermentable chromatin remodeling complex, can result in loss of protein expression and are associated with different cancers. Here, we used immunohistochemistry to investigate the significance of AT-rich interactive domain 1A loss in 73 pancreatic ductal adenocarcinoma cases with paired paracancerous normal pancreatic tissues. The relationship between levels of the AT-rich interactive domain 1A protein product, BAF250a, and clinicopathological parameters in the 73 pancreatic cancer specimens was also analyzed. We found that the expression of AT-rich interactive domain 1A in normal pancreatic tissue was higher than that in tumor tissue. Loss of AT-rich interactive domain 1A expression in pancreatic tumors was associated with tumor differentiation (P = .002) and tumor stage (P = .048). Meanwhile, BAF250a protein levels were not related to lymph node metastasis, distant metastasis, sex, or age and were not associated with survival. Transfection of the pancreatic cancer cell lines AsPC-1 and PANC-1 with small-interfering RNA specific for AT-rich interactive domain 1A resulted in elevated messenger RNA and protein expression levels of B-cell lymphoma-2 (Bcl-2), CyclinD1, and Kirsten rat sarcoma viral oncogene (KRAS). The AT-rich interactive domain 1A expression level in the cells was increased following microRNA-31 (miR-31) inhibitor transfection. Our data provide additional evidence that AT-rich interactive domain 1A might function as a tumor suppressor gene in pancreatic carcinogenesis.
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Affiliation(s)
- Li Zhang
- 1 Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tsinghua University, Beijing, China
| | - Cuiping Wang
- 1 Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tsinghua University, Beijing, China
| | - Shuangni Yu
- 1 Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tsinghua University, Beijing, China
| | - Congwei Jia
- 1 Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tsinghua University, Beijing, China
| | - Jie Yan
- 1 Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tsinghua University, Beijing, China
| | - Zhaohui Lu
- 1 Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tsinghua University, Beijing, China
| | - Jie Chen
- 1 Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tsinghua University, Beijing, China
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25
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Zhu X, Chen F, Shao Y, Xu D, Guo J. Long intergenic non-protein coding RNA 1006 used as a potential novel biomarker of gastric cancer. Cancer Biomark 2018; 21:73-80. [PMID: 29060927 DOI: 10.3233/cbm-170273] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND Accumulating evidences have shown that long non-coding RNAs (lncRNAs), longer than 200 nucleotides in length, play a crucial role in cancer occurrence and development. However, the relationships between most lncRNAs and gastric carcinogenesis remain poorly understood. OBJECTIVE To explore the diagnostic value of one typical lncRNA, long intergenic non-protein coding RNA 1006 (LINC01006), in gastric cancer. METHODS First, real-time quantitative reverse transcription-polymerase chain reaction (qRT-PCR) was used to determine the expression levels of LINC01006 in various gastric tissues from gastric cancer patients, healthy controls, and gastric dysplasia. Next, the correlation between LINC01006 expression levels and clinicopathological features of patients with gastric cancer was assessed. Finally, the relative levels of LINC01006 in gastric cancer cell lines comparing to normal gastric epithelial cell line were analyzed. RESULTS LINC01006 levels in cancer tissues were significantly lower than those in adjacent normal tissues (P< 0.001) and healthy control tissues (P< 0.001). Its expression was associated with age (P= 0.013), tumor location (P= 0.022), tumor size (P= 0.030), and venous invasion (P= 0.018). Moreover, expression of LINC01006 was downregulated in two gastric cancer cell lines, MGC-803 (P< 0.05) and AGS (P< 0.001) compared to normal gastric epithelial cell line GES-1. CONCLUSIONS All the data implied that LINC01006 may be a novel biomarker for gastric cancer.
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26
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Bilgiç F, Gerçeker E, Boyacıoğlu SÖ, Kasap E, Demirci U, Yıldırım H, Baykan AR, Yüceyar H. Potential role of chromatin remodeling factor genes in atrophic gastritis/gastric cancer risk. THE TURKISH JOURNAL OF GASTROENTEROLOGY : THE OFFICIAL JOURNAL OF TURKISH SOCIETY OF GASTROENTEROLOGY 2018; 29:427-435. [PMID: 30249557 PMCID: PMC6284651 DOI: 10.5152/tjg.2018.17350] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Accepted: 02/16/2018] [Indexed: 12/29/2022]
Abstract
BACKGROUND/AIMS Atrophic gastritis (AG), intestinal metaplasia (IM), and Helicobacter pylori (HP) are the risk factors for the development of gastric cancer (GC). Chromatin remodeling is one of the epigenetic mechanisms involved in the carcinogenesis of GC. The purpose of this study was to investigate the expression profiles of defined chromatin remodeling genes in gastric mucosal samples and their values as gastric carcinogenesis biomarkers. MATERIALS AND METHODS In total, 95 patients were included in the study. Patients were divided into 3 groups as: GC group (n=34), AG group (n=36), and control group (n=25). AG group was further divided into subgroups based on the presence of HP and IM in gastric mucosa. Chromatin remodeling gene expressions were analyzed using real-time PCR (RT-PCR) array in all groups. Data were evaluated using the RT-qPCR primer assay data analysis software. RESULTS EED, CBX3, and MTA1 were more overexpressed, whereas ARID1A, ING5, and CBX7 were more underexpressed in the AG and GC groups compared with the controls. No significant differences were observed between the AG and GC groups concerning the expression of these 6 genes, although the fold change levels of these genes in the GC group were well above than in the AG group. EED, CBX3, and MTA1 were significantly more overexpressed in HP- and IM-positive AG subgroup compared with the HP- or IM-negative AG subgroup. CONCLUSION In conclusion, our results provide an evidence of epigenetic alterations in AG. Expressions of EED, CBX3, MTA1, ARID1A, ING5, and CBX7 may be considered as promising markers to be used in GC screening for patients with AG.
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Affiliation(s)
- Fahri Bilgiç
- Department of Internal Medicine, Celal Bayar University School of Medicine, Manisa, Turkey
| | - Emre Gerçeker
- Department of Gastroenterology, Gazi Hospital, İzmir, Turkey
| | - Seda Örenay Boyacıoğlu
- Department of Medical Genetics, Adnan Menderes University School of Medicine, Aydın, Turkey
| | - Elmas Kasap
- Department of Gastroenterology, Celal Bayar University School of Medicine, Manisa, Turkey
| | - Ufuk Demirci
- Department of Internal Medicine, Celal Bayar University School of Medicine, Manisa, Turkey
| | - Hatice Yıldırım
- Department of Medical Biology, Celal Bayar University School of Medicine, Manisa, Turkey
| | - Ahmed Ramiz Baykan
- Department of Gastroenterology, Erzurum Regional Training and Research Hospital, Erzurum, Turkey
| | - Hakan Yüceyar
- Department of Gastroenterology, Celal Bayar University School of Medicine, Manisa, Turkey
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27
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Zhu YP, Sheng LL, Wu J, Yang M, Cheng XF, Wu NN, Ye XB, Cai J, Wang L, Shen Q, Wu JQ. Loss of ARID1A expression is associated with poor prognosis in patients with gastric cancer. Hum Pathol 2018; 78:28-35. [PMID: 29689245 DOI: 10.1016/j.humpath.2018.04.003] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 04/04/2018] [Accepted: 04/10/2018] [Indexed: 12/12/2022]
Abstract
Deletion of the frequently mutated AT-rich interacting domain-containing protein 1A (ARID1A), an SWI/SNF subunit, is associated with poor prognosis in various tumors. This study observed and analyzed ARID1A expression and its correlation with prognosis in gastric carcinoma. Postoperative sections of 98 patients with primary gastric cancer and 40 patients with gastric benign lesions were examined by immunohistochemistry. ARID1A deficiency was observed in 19.39% of gastric cancer tissues, 4.08% of matched paracancerous tissues, and 2.5% of normal gastric mucosa tissues. ARID1A expression was significantly down-regulated in gastric cancer tissues compared with paracancerous tissues (P = .001) and normal gastric mucosa tissues (P = .011). ARID1A deletion significantly correlated with tumor size (P = .022), lymph node metastasis (P = .030), and tumor differentiation (P = .009). In the 90 gastric cancer tissues with tumor stages II and III, the clinical outcome of the ARID1A-negative patients was significantly poorer than that of the ARID1A-positive patients (P = .005). Univariate analysis revealed that tumor invasion depth (P = .025), stage (P = .032), poor differentiation (P = .046), lymph node metastasis (P = .038), and ARID1A expression (P = .023) were significantly related to the overall survival of gastric cancer patients. Multivariate analysis demonstrated that tumor invasion depth (P = .029) and ARID1A expression (P = .031) were independent factors that indicate poor prognosis. In conclusion, the loss of ARID1A expression in gastric cancer patients significantly correlated with poor survival.
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Affiliation(s)
- Yi Ping Zhu
- Department of Oncology, Yijishan Hospital, Wannan Medical College, Wuhu, Anhui 241001, China
| | - Li Li Sheng
- Department of Oncology, Yijishan Hospital, Wannan Medical College, Wuhu, Anhui 241001, China
| | - Jing Wu
- Department of Oncology, The First Affiliated Hospital of Soochow University, Suzhou 215006,China
| | - Mo Yang
- Department of Oncology, Yijishan Hospital, Wannan Medical College, Wuhu, Anhui 241001, China
| | - Xian Feng Cheng
- Department of Clinical Laboratory, Hospital of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing, Jiangsu 210000, China
| | - Ning Ni Wu
- Department of Oncology, Yijishan Hospital, Wannan Medical College, Wuhu, Anhui 241001, China
| | - Xiao Bing Ye
- Department of Oncology, Yijishan Hospital, Wannan Medical College, Wuhu, Anhui 241001, China
| | - Juan Cai
- Department of Oncology, Yijishan Hospital, Wannan Medical College, Wuhu, Anhui 241001, China
| | - Lu Wang
- Department of Oncology, Yijishan Hospital, Wannan Medical College, Wuhu, Anhui 241001, China
| | - Qian Shen
- Department of Oncology, Nantong Cancer Hospital, Nantong, Jiangsu 226000, China.
| | - Jian Qiu Wu
- Department of Oncology, Jiangsu Cancer Hospital, Nanjing, Jiangsu 210000, China.
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28
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Polom K, Marano L, Marrelli D, De Luca R, Roviello G, Savelli V, Tan P, Roviello F. Meta-analysis of microsatellite instability in relation to clinicopathological characteristics and overall survival in gastric cancer. Br J Surg 2017; 105:159-167. [PMID: 29091259 DOI: 10.1002/bjs.10663] [Citation(s) in RCA: 171] [Impact Index Per Article: 24.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Revised: 02/03/2017] [Accepted: 07/06/2017] [Indexed: 12/14/2022]
Abstract
BACKGROUND Several associations between microsatellite instability (MSI) and other clinicopathological factors have been reported in gastric cancer, but the results have been ambiguous. This systematic review and meta-analysis investigated the relationship between MSI and overall survival and clinicopathological characteristics of patients with gastric cancer. METHODS A systematic literature search of the PubMed, Cochrane and Ovid databases until 31 January 2016 was performed in accordance with the PRISMA statement. The articles were screened independently according to PICO (population, intervention, comparator, outcome) eligibility criteria. All eligible articles were evaluated independently by two reviewers for risk of bias according to the Quality In Prognosis Study tool. RESULTS Overall, 48 studies with a total of 18 612 patients were included. MSI was found in 9·2 per cent of patients (1718 of 18 612), and was associated with female sex (odds ratio (OR) 1·57, 95 per cent c.i. 1·31 to 1·89; P < 0·001), older age (OR 1·58, 2·20 to 1·13; P < 0·001), intestinal Laurén histological type (OR 2·23, 1·94 to 2·57; P < 0·001), mid/lower gastric location (OR 0·38, 0·32 to 0·44; P < 0·001), lack of lymph node metastases (OR 0·70, 0·57 to 0·86, P < 0·001) and TNM stage I-II (OR 1·77, 1·47 to 2·13; P < 0·001). The pooled hazard ratio for overall survival of patients with MSI versus those with non-MSI gastric cancer from 21 studies was 0·69 (95 per cent c.i. 0·56 to 0·86; P < 0·001). CONCLUSION MSI in gastric cancer was associated with good overall survival, reflected in several favourable clinicopathological tumour characteristics.
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Affiliation(s)
- K Polom
- Department General Surgery and Surgical Oncology, University of Siena, Siena, Italy.,Department of Surgical Oncology, Medical University of Gdansk, Gdansk, Poland
| | - L Marano
- General, Minimally Invasive and Robotic Surgery, Department of Surgery, San Matteo degli Infermi Hospital, Spoleto, Italy
| | - D Marrelli
- Department General Surgery and Surgical Oncology, University of Siena, Siena, Italy
| | - R De Luca
- Department of Surgical Oncology, National Cancer Research Centre-Istituto Tumori G. Paolo II, Bari, Italy
| | - G Roviello
- Department of Oncology, Medical Oncology Unit, San Donato Hospital, Arezzo, Italy.,Department of Medical, Surgical and Health Sciences, University of Trieste, Trieste, Italy
| | - V Savelli
- Department General Surgery and Surgical Oncology, University of Siena, Siena, Italy
| | - P Tan
- Cancer and Stem Cell Biology, Duke-National University of Singapore Graduate Medical School, Genome Institute of Singapore, Cancer Science Institute of Singapore, National University of Singapore, and Cellular and Molecular Research, National Cancer Centre, Singapore
| | - F Roviello
- Department General Surgery and Surgical Oncology, University of Siena, Siena, Italy
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29
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朱 晓, 李 夏, 李 素, 于 红. EBV相关性胃癌研究进展. Shijie Huaren Xiaohua Zazhi 2017; 25:1375-1381. [DOI: 10.11569/wcjd.v25.i15.1375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
胃癌细胞中存在Epstein-Barr病毒(Epstein-Barr virus, EBV)者被称为EBV相关性胃癌(Epstein-Barr virus-associated gastric carcinoma, EBVaGC). 近年来EBVaGC作为一种独特的分子亚型疾病逐渐被人们所认知, 全球胃癌患者中平均有10%者为EBVaGC. 本文对EBVaGC近年来在流行病学、临床病理特征、发病机制、治疗及预后等方面的研究进展作一综述. 但目前对EBVaGC的研究尚不明确, 且尚无临床诊疗规范与共识, 也带来了新的挑战和机遇.
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30
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Drage MG, Tippayawong M, Agoston AT, Zheng Y, Bueno R, Hornick JL, Odze RD, Srivastava A. Morphological Features and Prognostic Significance of ARID1A-Deficient Esophageal Adenocarcinomas. Arch Pathol Lab Med 2017; 141:970-977. [DOI: 10.5858/arpa.2016-0318-oa] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Context.—
The clinicopathologic and prognostic significance of ARID1A mutation in esophageal adenocarcinoma (EAC) is unknown.
Objective.—
To determine the morphological correlates and prognostic significance of ARID1A-deficient EAC.
Design.—
One hundred twenty cases of primary EAC were evaluated for a predetermined set of histologic features and immunohistochemistry for ARID1A, p53, and MLH1 performed on EAC, as well as adjacent Barrett esophagus and Barrett esophagus–associated dysplasia, when feasible. Associations between categorical clinicopathologic variables were analyzed by Fisher exact test, and survival analysis was performed by a Cox proportional hazards analysis.
Results.—
The study group included 97 men and 23 women (mean age, 66 years). Loss of ARID1A expression was seen in 12 of 120 EACs (10%). ARID1A-deficient tumors showed a strong correlation with a medullary and mucinous phenotype, and 8 of 12 (67%) had at least one feature reminiscent of high microsatellite instability colon carcinomas (mucinous or medullary differentiation, marked intratumoral or peritumoral lymphoid infiltrate). A mutant p53 pattern was present in 52 of 120 EACs (43%) and showed no correlation with ARID1A deficiency (P > .05). MLH1 loss was present in only 2 of 120 EACs (2%); both of which were also deficient in ARID1A. ARID1A-deficient EACs showed a trend toward increased risk of nodal metastasis but had no effect on overall patient survival.
Conclusions.—
ARID1A-deficient EACs show a phenotype similar to colon cancer with high microsatellite instability but do not appear to have any prognostic significance. Concurrent MLH1 loss is not seen in most ARID1A-deficient tumors, suggesting that ARID1A may be a primary driver of carcinogenesis in a subset of EACs.
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Affiliation(s)
| | | | | | | | | | | | | | - Amitabh Srivastava
- From the Departments of Pathology (Drs Drage, Tippayawong, Agoston, Hornick, Odze, and Srivastava) and Surgery (Drs Zheng and Bueno), Brigham and Women's Hospital, Boston, Massachusetts. Dr Drage is now with the Department of Pathology, University of Rochester Medical Center, Rochester, New York
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31
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Kim YS, Jeong H, Choi JW, Oh HE, Lee JH. Unique characteristics of ARID1A mutation and protein level in gastric and colorectal cancer: A meta-analysis. Saudi J Gastroenterol 2017; 23:268-274. [PMID: 28937020 PMCID: PMC5625362 DOI: 10.4103/sjg.sjg_184_17] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND/AIM Recently, AT-rich interactive domain-containing 1A protein (ARID1A) has been identified as a novel tumor suppressor gene in gastric cancer (GC) and colorectal cancer (CRC). However, the clinicopathologic value of ARID1A mutation or protein level in GC and CRC patients is controversial. Hence, we conducted a meta-analysis on the relationship between ARID1A aberrations and clinicopathologic parameters in GC and CRC. MATERIALS AND METHODS Relevant published studies were selected from PubMed and EMBASE. The effect sizes of ARID1A mutation or level on the patient's clinicopathologic parameters were calculated by prevalence rate or odds ratio (OR) or hazard ratio (HR), respectively. The effect sizes were combined using a random-effects model. RESULTS The frequency of ARID1A mutation and loss of ARID1A protein expression in GC patients was 17% and 27%, respectively. The loss of ARID1A protein expression of GC patients was significantly associated with advanced tumor depth (OR = 1.8, P = 0.004), lymph node metastasis (OR = 1.4, P = 0.001), and unfavorable adjusted overall survival (HR = 1.5, P < 0.001). ARID1A mutation of GC was significantly associated with microsatellite instability (MSI) (OR = 24.5, P < 0.001) and EBV infection (OR = 2.6, P = 0.001). The frequency of ARID1A mutation and ARID1A protein expression loss in CRC patients was approximately 12-13%. Interestingly, the loss of ARID1A protein expression in CRC patients was significantly associated with poorly differentiated grade (OR = 4.0, P < 0.001) and advanced tumor depth (OR = 1.8, P = 0.012). CONCLUSION Our meta-analysis revealed that ARID1A alterations may be involved in the carcinogenesis of GC by EBV infection and MSI. The loss of ARID1A protein expression may be a marker of poor prognosis in GC and CRC patients.
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Affiliation(s)
- Young-Sik Kim
- Department of Pathology, Korea University Ansan Hospital, Jeokgeum-ro, Danwon-gu, Ansan-si, Gyeonggi-do, Republic of Korea
| | - Hoiseon Jeong
- Department of Pathology, Korea University Ansan Hospital, Jeokgeum-ro, Danwon-gu, Ansan-si, Gyeonggi-do, Republic of Korea
| | - Jung-Woo Choi
- Department of Pathology, Korea University Ansan Hospital, Jeokgeum-ro, Danwon-gu, Ansan-si, Gyeonggi-do, Republic of Korea
| | - Hwa Eun Oh
- Department of Pathology, Korea University Ansan Hospital, Jeokgeum-ro, Danwon-gu, Ansan-si, Gyeonggi-do, Republic of Korea
| | - Ju-Han Lee
- Department of Pathology, Korea University Ansan Hospital, Jeokgeum-ro, Danwon-gu, Ansan-si, Gyeonggi-do, Republic of Korea,Address for correspondence: Dr. Ju-Han Lee, Department of Pathology, Korea University Ansan Hospital, 123, Jeokgeum-ro, Danwon-gu, Ansan-si, Gyeonggi-do, 15355, Republic of Korea. E-mail:
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Llorca-Cardeñosa MJ, Fleitas T, Ibarrola-Villava M, Peña-Chilet M, Mongort C, Martinez-Ciarpaglini C, Navarro L, Gambardella V, Castillo J, Roselló S, Navarro S, Ribas G, Cervantes A. Epigenetic changes in localized gastric cancer: the role of RUNX3 in tumor progression and the immune microenvironment. Oncotarget 2016; 7:63424-63436. [PMID: 27566570 PMCID: PMC5325374 DOI: 10.18632/oncotarget.11520] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Accepted: 08/15/2016] [Indexed: 02/07/2023] Open
Abstract
Gastric cancer (GC) pathogenesis involves genetic, epigenetic and environmental factors. Epigenetic alterations, such as DNA methylation are considered pivotal in the inactivation of tumor-related genes. We assessed a methylation panel of 5 genes to study their association to GC progression and microsatellite instability (MSI), and studied the role of RUNX3 in GC pathogenesis and the tumor immune microenvironment.The methylation status of 47 promoter-CpG islands was studied through MALDI-TOF mass spectrometry analysis in 35 Microsatellite stable (MSS) GC, 26 MSI, and 18 cancer-free samples (CFS), and 6 MSS GC and 4 MSI GC cell lines. We also studied RUNX3 expression by immunohistochemistry (IHC) in 40 samples, and validated differences in methylation levels between tumor, normal, and immune tissue in 14 additional samples.Unsupervised hierarchical clustering of methylation levels revealed no distinct subgroups between MSI and MSS samples or cell lines. CFSs clustered together showing higher levels of RUNX3 methylation compared to GC samples. RUNX3 showed protein silencing in cancer and normal mucosa, compared to inflammatory peritumoural infiltrate in almost all cases, showing a non-lymphocytic predominant pattern and being correlated with epigenetic silencing.Our results show aberrant promoter's methylation in APC, CDH1, CDKN2A, MLH1 and RUNX3 associated with GC, as well as a non-lymphocytic predominant infiltrate with high expression of RUNX3. Deep study of RUNX3 inflammation signaling could help in understanding inflammation and immune activation in the tumor microenvironment.
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Affiliation(s)
| | - Tania Fleitas
- Medical Oncology, Biomedical Research Institute INCLIVA, University of Valencia, Valencia, Spain
| | - Maider Ibarrola-Villava
- Medical Oncology, Biomedical Research Institute INCLIVA, University of Valencia, Valencia, Spain
| | - María Peña-Chilet
- Medical Oncology, Biomedical Research Institute INCLIVA, University of Valencia, Valencia, Spain
| | - Cristina Mongort
- Department of Pathology, Biomedical Research Institute INCLIVA, University of Valencia, Valencia, Spain
| | | | - Lara Navarro
- Department of Pathology, Biomedical Research Institute INCLIVA, University of Valencia, Valencia, Spain
| | - Valentina Gambardella
- Medical Oncology, Biomedical Research Institute INCLIVA, University of Valencia, Valencia, Spain
| | - Josefa Castillo
- Medical Oncology, Biomedical Research Institute INCLIVA, University of Valencia, Valencia, Spain
| | - Susana Roselló
- Medical Oncology, Biomedical Research Institute INCLIVA, University of Valencia, Valencia, Spain
| | - Samuel Navarro
- Department of Pathology, Biomedical Research Institute INCLIVA, University of Valencia, Valencia, Spain
| | - Gloria Ribas
- Medical Oncology, Biomedical Research Institute INCLIVA, University of Valencia, Valencia, Spain
| | - Andrés Cervantes
- Medical Oncology, Biomedical Research Institute INCLIVA, University of Valencia, Valencia, Spain
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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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34
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Yang L, Wei S, Zhao R, Wu Y, Qiu H, Xiong H. Loss of ARID1A expression predicts poor survival prognosis in gastric cancer: a systematic meta-analysis from 14 studies. Sci Rep 2016; 6:28919. [PMID: 27354232 PMCID: PMC4926214 DOI: 10.1038/srep28919] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Accepted: 06/07/2016] [Indexed: 02/08/2023] Open
Abstract
The chromatin remodeling gene, AT-rich interactive domain 1A gene (ARID1A), frequently mutates inactively in gastric cancer (GC). However, its prognostic value remains controversial. To address this issue, a comprehensive meta-analysis was performed. Studies published until March 2016 were systematically searched. A total of 15 cohorts from 14 literatures involving 3183 patients were subjected to this meta-analysis. The pooled data showed that ARID1A expression loss predicted poor overall survival (OS) in GC (Hazard Ratio (HR) = 1.60; 95% Confidence Interval (CI) = 1.40-1.81; P < 0.001), with low heterogeneity among these studies (I(2) = 21.5%; P = 0.214). Stratification analyses revealed that ARID1A expression loss was associated with poor OS in Asians (HR = 1.65, 95% CI = 1.44-1.89), proportion of proximal disease ≤30% subgroup (HR = 1.80, 95% CI = 1.36-2.38) and Epstein-Barr virus (EBV) (+) > 5% subgroup (HR = 1.59, 95% CI = 1.18-2.15). The robust results were suggested by sensitivity analyses and no evidence of significant publication bias was detected. This study demonstrated a significant relationship between deletion of ARID1A expression and poor OS in GC. Moreover, ethnicity, tumor location and EBV infection status might be potential key factors influencing this correlation.
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Affiliation(s)
- Lin Yang
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, PR China
| | - Sheng Wei
- Department of Epidemiology and Biostatistics, and the Ministry of Education Key Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, PR China
| | - Rongxian Zhao
- Department of Epidemiology and Biostatistics, and the Ministry of Education Key Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, PR China
| | - Yingxing Wu
- Carilion Clinic, 1906 Belleview Ave SE, Roanoke, Virginia 24014, USA
| | - Hong Qiu
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, PR China
| | - Huihua Xiong
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, PR China
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Kang HJ, Lee IS, Park YS, Ho WJ, Sohn D, Ahn JY, Yook JH, Kim BS. Biomarkers of EBV-positive Gastric Cancers: Loss of PTEN Expression is Associated with Poor Prognosis and Nodal Metastasis. Ann Surg Oncol 2016; 23:3684-3692. [DOI: 10.1245/s10434-016-5284-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Indexed: 12/13/2022]
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Kim YB, Ham IH, Hur H, Lee D. Various ARID1A expression patterns and their clinical significance in gastric cancers. Hum Pathol 2016; 49:61-70. [DOI: 10.1016/j.humpath.2015.10.008] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Revised: 09/30/2015] [Accepted: 10/08/2015] [Indexed: 02/07/2023]
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Lim B, Kim JH, Kim M, Kim SY. Genomic and epigenomic heterogeneity in molecular subtypes of gastric cancer. World J Gastroenterol 2016; 22:1190-1201. [PMID: 26811657 PMCID: PMC4716030 DOI: 10.3748/wjg.v22.i3.1190] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Revised: 09/08/2015] [Accepted: 10/13/2015] [Indexed: 02/06/2023] Open
Abstract
Gastric cancer is a complex disease that is affected by multiple genetic and environmental factors. For the precise diagnosis and effective treatment of gastric cancer, the heterogeneity of the disease must be simplified; one way to achieve this is by dividing the disease into subgroups. Toward this effort, recent advances in high-throughput sequencing technology have revealed four molecular subtypes of gastric cancer, which are classified as Epstein-Barr virus-positive, microsatellite instability, genomically stable, and chromosomal instability subtypes. We anticipate that this molecular subtyping will help to extend our knowledge for basic research purposes and will be valuable for clinical use. Here, we review the genomic and epigenomic heterogeneity of the four molecular subtypes of gastric cancer. We also describe a mutational meta-analysis and a reanalysis of DNA methylation that were performed using previously reported gastric cancer datasets.
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Guo LL, Song CH, Wang P, Dai LP, Zhang JY, Wang KJ. Competing endogenous RNA networks and gastric cancer. World J Gastroenterol 2015; 21:11680-11687. [PMID: 26556995 PMCID: PMC4631969 DOI: 10.3748/wjg.v21.i41.11680] [Citation(s) in RCA: 145] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Revised: 08/12/2015] [Accepted: 09/15/2015] [Indexed: 02/06/2023] Open
Abstract
Recent studies have showed that RNAs regulate each other with microRNA (miRNA) response elements (MREs) and this mechanism is known as “competing endogenous RNA (ceRNA)” hypothesis. Long non-coding RNAs (lncRNAs) are supposed to play important roles in cancer. Compelling evidence suggests that lncRNAs can interact with miRNAs and regulate the expression of miRNAs as ceRNAs. Several lncRNAs such as H19, HOTAIR and MEG3 have been found to be associated with miRNAs in gastric cancer (GC), generating regulatory crosstalk across the transcriptome. These MRE sharing elements implicated in the ceRNA networks (ceRNETs) are able to regulate mRNA expression. The ceRNA regulatory networks including mRNAs, miRNAs, lncRNAs and circular RNAs may play critical roles in tumorigenesis, and the perturbations of ceRNETs may contribute to the pathogenesis of GC.
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Kim KJ, Jung HY, Oh MH, Cho H, Lee JH, Lee HJ, Jang SH, Lee MS. Loss of ARID1A Expression in Gastric Cancer: Correlation with Mismatch Repair Deficiency and Clinicopathologic Features. J Gastric Cancer 2015; 15:201-8. [PMID: 26468418 PMCID: PMC4604335 DOI: 10.5230/jgc.2015.15.3.201] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Revised: 09/14/2015] [Accepted: 09/14/2015] [Indexed: 01/28/2023] Open
Abstract
Purpose The AT-rich interactive domain 1A (ARID1A) gene encodes BRG1-associated factor 250a, a component of the SWItch/Sucrose NonFermentable chromatin remodeling complex, which is considered a tumor suppressor in many tumors. We aimed to investigate the prognostic significance of ARID1A expression in gastric cancers and explore its relationship with clinicopathologic parameters such as mismatch repair protein expression. Materials and Methods Four tissue microarrays were constructed from 191 resected specimens obtained at Soonchunhyang University Cheonan Hospital from 2006 to 2008. Nuclear expression of ARID1A was semiquantitatively assessed and binarized into retained and lost expression. Results Loss of ARID1A expression was observed in 62 cases (32.5%). This was associated with more frequent vascular invasion (P=0.019) and location in the upper third of the stomach (P=0.001), and trended toward more poorly differentiated subtypes (P=0.054). ARID1A loss was significantly associated with the mismatch repair-deficient phenotype (P=0.003). ARID1A loss showed a statistically significant correlation with loss of MLH1 (P=0.001) but not MSH2 expression (P=1.000). Kaplan-Meier survival analysis showed no statistically significant difference in overall survival; however, patients with retained ARID1A expression tended to have better overall survival than those with loss of ARID1A expression (P=0.053). In both mismatch repair-deficient and mismatch repair-proficient groups, survival analysis showed no differences related to ARID1A expression status. Conclusions Our results demonstrated that loss of ARID1A expression is closely associated with the mismatch repair-deficient phenotype, especially in sporadic microsatellite instability-high gastric cancers.
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Affiliation(s)
- Kyung-Ju Kim
- Department of Pathology, Soonchunhyang University Cheonan Hospital, Cheonan, Korea
| | - Hae Yoen Jung
- Department of Pathology, Soonchunhyang University Cheonan Hospital, Cheonan, Korea
| | - Mee-Hye Oh
- Department of Pathology, Soonchunhyang University Cheonan Hospital, Cheonan, Korea
| | - Hyundeuk Cho
- Department of Pathology, Soonchunhyang University College of Medicine, Cheonan, Korea
| | - Ji-Hye Lee
- Department of Pathology, Soonchunhyang University Cheonan Hospital, Cheonan, Korea
| | - Hyun Ju Lee
- Department of Pathology, Soonchunhyang University Cheonan Hospital, Cheonan, Korea
| | - Si-Hyong Jang
- Department of Pathology, Soonchunhyang University Cheonan Hospital, Cheonan, Korea
| | - Moon Soo Lee
- Department of General Surgery, Soonchunhyang University Cheonan Hospital, Cheonan, Korea
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40
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Zhu S, Mao J, Shao Y, Chen F, Zhu X, Xu D, Zhang X, Guo J. Reduced expression of the long non-coding RNA AI364715 in gastric cancer and its clinical significance. Tumour Biol 2015; 36:8041-5. [PMID: 25971582 DOI: 10.1007/s13277-015-3543-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Accepted: 05/06/2015] [Indexed: 12/12/2022] Open
Abstract
Long non-coding RNA (lncRNA), which is greater than 200 nucleotides, is a class of RNA molecules without protein coding function. In recent years, studies have shown that lncRNAs are associated with cancers. They are affecting the occurrence and development of cancers. However, the diagnostic significances of lncRNAs in gastric cancer are largely unknown. In this study, we focused on AI364715, one typical lncRNA. A total of 186 samples were collected from two cancer centers. To find the potential association between its level and gastric cancer, we first collected 75 paired gastric cancer tissues and normal tissues, which are 5 cm away from the edge of carcinoma. Besides, 18 human healthy gastric mucosa and 18 gastric precancerous lesions (dysplasia) were also collected. Quantitative reverse transcription-polymerase chain reaction (RT-PCR) was first used to detect the expression level of AI364715 at multiple stages of gastric tumorigenesis. Then, the relationships between AI364715 level and the clinicopathological factors of patients with gastric cancer were analyzed. The results showed that the expression level of AI364715 in gastric cancer tissues was downregulated. Meanwhile, its expression level was closely associated with tumor size and differentiation. More importantly, AI364715 expression level was significantly changed in dysplasia, the typical precancerous lesions. Taken together, AI364715 may be a potential biomarker for the diagnosis of gastric cancer.
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Affiliation(s)
- Shengqian Zhu
- Department of Biochemistry and Molecular Biology, Zhejiang Provincial Key Laboratory of Pathophysiology, Ningbo University School of Medicine, Ningbo, 315211, China
| | - Jinqin Mao
- Department of Biochemistry and Molecular Biology, Zhejiang Provincial Key Laboratory of Pathophysiology, Ningbo University School of Medicine, Ningbo, 315211, China
| | - Yongfu Shao
- Department of Biochemistry and Molecular Biology, Zhejiang Provincial Key Laboratory of Pathophysiology, Ningbo University School of Medicine, Ningbo, 315211, China
| | - Fang Chen
- Department of Biochemistry and Molecular Biology, Zhejiang Provincial Key Laboratory of Pathophysiology, Ningbo University School of Medicine, Ningbo, 315211, China
| | - Xiaoqin Zhu
- Department of Biochemistry and Molecular Biology, Zhejiang Provincial Key Laboratory of Pathophysiology, Ningbo University School of Medicine, Ningbo, 315211, China
| | - Dingli Xu
- Department of Biochemistry and Molecular Biology, Zhejiang Provincial Key Laboratory of Pathophysiology, Ningbo University School of Medicine, Ningbo, 315211, China
| | - Xinjun Zhang
- Department of Gastroenterology, The Affiliated Hospital of Ningbo University School of Medicine, Ningbo, China.
| | - Junming Guo
- Department of Biochemistry and Molecular Biology, Zhejiang Provincial Key Laboratory of Pathophysiology, Ningbo University School of Medicine, Ningbo, 315211, China.
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