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Yoshizawa T, Uehara T, Iwaya M, Asaka S, Kobayashi S, Nakajima T, Kinugawa Y, Nagaya T, Kamakura M, Shimizu A, Kubota K, Notake T, Masuo H, Hosoda K, Sakai H, Hayashi H, Umemura K, Kamachi A, Goto T, Tomida H, Yamazaki S, Ota H, Soejima Y. Correlation of LGR5 expression and clinicopathological features in intrahepatic cholangiocarcinoma. Pathol Res Pract 2022; 232:153832. [DOI: 10.1016/j.prp.2022.153832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 02/27/2022] [Accepted: 03/01/2022] [Indexed: 10/18/2022]
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Kamakura M, Uehara T, Iwaya M, Asaka S, Kobayashi S, Nakajima T, Kinugawa Y, Nagaya T, Yoshizawa T, Shimizu A, Ota H, Umemura T. LGR5 expression and clinicopathological features of the invasive front in the fat infiltration area of pancreatic cancer. Diagn Pathol 2022; 17:21. [PMID: 35123536 PMCID: PMC8818226 DOI: 10.1186/s13000-022-01203-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 01/20/2022] [Indexed: 12/24/2022] Open
Abstract
Abstract
Background
Leucine-rich repeat-containing G-protein-coupled receptor 5 (LGR5) is a strong cancer stem cell marker in colorectal cancer; however, there are many unclear aspects of LGR5 expression in pancreatic cancer. It has been reported that the interaction between tumor cells and stroma at the fat infiltration site has a significant effect on pancreatic cancer prognosis. Therefore, we report a clinicopathological study of LGR5 expression at the fat invasion front in pancreatic cancer.
Methods
LGR5 expression was analyzed in 40 pancreatic ductal adenocarcinoma cases with RNAscope, which is a newly developed high-sensitivity in situ hybridization method. Epithelial-mesenchymal transition (EMT) was analyzed by the expression of E-cadherin and vimentin via immunohistochemistry.
Results
LGR5-positive dots were identified in all cases, especially with glandular formation. In the fat invasion front, a high histological grade showed significantly reduced LGR5 expression compared with a low histological grade (p=0.0126). LGR5 expression was significantly higher in the non-EMT phenotype group than in EMT phenotype group (p=0.0003). Additionally, LGR5 expression was significantly lower in cases with high vascular invasion than in those with low vascular invasion (p=0.0244).
Conclusions
These findings suggest that decreased LGR5 expression in the fat invasion front is associated with more aggressive biological behavior in pancreatic ductal adenocarcinoma, with higher tumor grade, EMT phenotype, and higher vascular invasion.
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Patil K, Khan FB, Akhtar S, Ahmad A, Uddin S. The plasticity of pancreatic cancer stem cells: implications in therapeutic resistance. Cancer Metastasis Rev 2021; 40:691-720. [PMID: 34453639 PMCID: PMC8556195 DOI: 10.1007/s10555-021-09979-x] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Accepted: 07/12/2021] [Indexed: 02/07/2023]
Abstract
The ever-growing perception of cancer stem cells (CSCs) as a plastic state rather than a hardwired defined entity has evolved our understanding of the functional and biological plasticity of these elusive components in malignancies. Pancreatic cancer (PC), based on its biological features and clinical evolution, is a prototypical example of a CSC-driven disease. Since the discovery of pancreatic CSCs (PCSCs) in 2007, evidence has unraveled their control over many facets of the natural history of PC, including primary tumor growth, metastatic progression, disease recurrence, and acquired drug resistance. Consequently, the current near-ubiquitous treatment regimens for PC using aggressive cytotoxic agents, aimed at ‘‘tumor debulking’’ rather than eradication of CSCs, have proven ineffective in providing clinically convincing improvements in patients with this dreadful disease. Herein, we review the key hallmarks as well as the intrinsic and extrinsic resistance mechanisms of CSCs that mediate treatment failure in PC and enlist the potential CSC-targeting ‘natural agents’ that are gaining popularity in recent years. A better understanding of the molecular and functional landscape of PCSC-intrinsic evasion of chemotherapeutic drugs offers a facile opportunity for treating PC, an intractable cancer with a grim prognosis and in dire need of effective therapeutic advances.
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Affiliation(s)
- Kalyani Patil
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, P.O. Box 3050, Doha, Qatar
| | - Farheen B Khan
- Department of Biology, College of Science, The United Arab Emirates University, PO Box 15551, Al Ain, United Arab Emirates
| | - Sabah Akhtar
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, P.O. Box 3050, Doha, Qatar
| | - Aamir Ahmad
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, P.O. Box 3050, Doha, Qatar.,Dermatology Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Shahab Uddin
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, P.O. Box 3050, Doha, Qatar. .,Dermatology Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar. .,Laboratory Animal Research Center, Qatar University, Doha, Qatar.
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Ehara T, Uehara T, Nakajima T, Kinugawa Y, Kobayashi S, Iwaya M, Ota H, Soejima Y. LGR5 expression is associated with prognosis in poorly differentiated gastric adenocarcinoma. BMC Cancer 2021; 21:228. [PMID: 33676447 PMCID: PMC7936409 DOI: 10.1186/s12885-021-07913-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 02/15/2021] [Indexed: 12/24/2022] Open
Abstract
Background Leucine-rich repeat-containing G-protein-coupled receptor 5 (LGR5) is an important cancer stem cell marker in gastric cancer. However, no detailed studies are available on LGR5 expression in poorly differentiated gastric adenocarcinoma (PD-AC). Therefore, we investigated the relationship between LGR5 expression and clinicopathological data in PD-AC. Methods LGR5 mRNA expression levels were quantified in 41 PD-AC specimens using a highly sensitive RNAscope in situ hybridization technique. Epstein–Barr virus (EBV) infection was also detected by EBV in situ hybridization. Results LGR5 expression levels were measured in 38 of 41 PD-AC cases, and 17 cases were identified as LGR5 high. The frequency of EBV positivity tended to be higher in the LGR5-low group than in the LGR5-high group (P = 0.0764). Furthermore, the frequency of vascular invasion tended to be higher in the LGR5-high group than in the LGR5-low group (P = 0.0764). The overall survival of PD-AC patients in the LGR5-high group was significantly lower than in the LGR5-low group (log-rank test, P = 0.0108). The Cox proportional hazard regression model revealed that the LGR5-low group (HR = 0.29; 95% CI: 0.11–0.74; P = 0.01) showed independently better OS for PD-AC. Conclusions Quantifying the levels of LGR5 expression may facilitate defining prognosis in Japanese patients with PD-AC. Further study of LGR5 in this context is warranted.
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Affiliation(s)
- Takehito Ehara
- Department of Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - Takeshi Uehara
- Department of Laboratory Medicine, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto, 390-8621, Japan.
| | - Tomoyuki Nakajima
- Department of Laboratory Medicine, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto, 390-8621, Japan
| | - Yasuhiro Kinugawa
- Department of Laboratory Medicine, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto, 390-8621, Japan
| | - Shota Kobayashi
- Department of Laboratory Medicine, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto, 390-8621, Japan
| | - Mai Iwaya
- Department of Laboratory Medicine, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto, 390-8621, Japan
| | - Hiroyoshi Ota
- Department of Laboratory Medicine, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto, 390-8621, Japan.,Department of Biomedical Laboratory Medicine, Shinshu University School of Medicine, Matsumoto, Japan
| | - Yuji Soejima
- Department of Surgery, Shinshu University School of Medicine, Matsumoto, Japan
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Giwa A, Fatai A, Gamieldien J, Christoffels A, Bendou H. Identification of novel prognostic markers of survival time in high-risk neuroblastoma using gene expression profiles. Oncotarget 2020; 11:4293-4305. [PMID: 33245713 PMCID: PMC7679032 DOI: 10.18632/oncotarget.27808] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Accepted: 10/27/2020] [Indexed: 12/11/2022] Open
Abstract
Neuroblastoma is the most common extracranial solid tumor in childhood. Patients in high-risk group often have poor outcomes with low survival rates despite several treatment options. This study aimed to identify a genetic signature from gene expression profiles that can serve as prognostic indicators of survival time in patients of high-risk neuroblastoma, and that could be potential therapeutic targets. RNA-seq count data was downloaded from UCSC Xena browser and samples grouped into Short Survival (SS) and Long Survival (LS) groups. Differential gene expression (DGE) analysis, enrichment analyses, regulatory network analysis and machine learning (ML) prediction of survival group were performed. Forty differentially expressed genes (DEGs) were identified including genes involved in molecular function activities essential for tumor proliferation. DEGs used as features for prediction of survival groups included EVX2, NHLH2, PRSS12, POU6F2, HOXD10, MAPK15, RTL1, LGR5, CYP17A1, OR10AB1P, MYH14, LRRTM3, GRIN3A, HS3ST5, CRYAB and NXPH3. An accuracy score of 82% was obtained by the ML classification models. SMIM28 was revealed to possibly have a role in tumor proliferation and aggressiveness. Our results indicate that these DEGs can serve as prognostic indicators of survival in high-risk neuroblastoma patients and will assist clinicians in making better therapeutic and patient management decisions.
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Affiliation(s)
- Abdulazeez Giwa
- SAMRC Bioinformatics Unit, South African National Bioinformatics Institute, University of the Western Cape, Bellville, South Africa
| | - Azeez Fatai
- Department of Biochemistry, Lagos State University, Lagos, Nigeria
| | - Junaid Gamieldien
- SAMRC Bioinformatics Unit, South African National Bioinformatics Institute, University of the Western Cape, Bellville, South Africa
| | - Alan Christoffels
- SAMRC Bioinformatics Unit, South African National Bioinformatics Institute, University of the Western Cape, Bellville, South Africa
| | - Hocine Bendou
- SAMRC Bioinformatics Unit, South African National Bioinformatics Institute, University of the Western Cape, Bellville, South Africa
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Khomiak A, Brunner M, Kordes M, Lindblad S, Miksch RC, Öhlund D, Regel I. Recent Discoveries of Diagnostic, Prognostic and Predictive Biomarkers for Pancreatic Cancer. Cancers (Basel) 2020; 12:E3234. [PMID: 33147766 PMCID: PMC7692691 DOI: 10.3390/cancers12113234] [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: 10/08/2020] [Revised: 10/26/2020] [Accepted: 10/28/2020] [Indexed: 12/11/2022] Open
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is an aggressive disease with a dismal prognosis that is frequently diagnosed at an advanced stage. Although less common than other malignant diseases, it currently ranks as the fourth most common cause of cancer-related death in the European Union with a five-year survival rate of below 9%. Surgical resection, followed by adjuvant chemotherapy, remains the only potentially curative treatment but only a minority of patients is diagnosed with locally resectable, non-metastatic disease. Patients with advanced disease are treated with chemotherapy but high rates of treatment resistance and unfavorable side-effect profiles of some of the used regimens remain major challenges. Biomarkers reflect pathophysiological or physiological processes linked to a disease and can be used as diagnostic, prognostic and predictive tools. Thus, accurate biomarkers can allow for better patient stratification and guide therapy choices. Currently, the only broadly used biomarker for PDAC, CA 19-9, has multiple limitations and the need for novel biomarkers is urgent. In this review, we highlight the current situation, recent discoveries and developments in the field of biomarkers of PDAC and their potential clinical applications.
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Affiliation(s)
- Andrii Khomiak
- Shalimov National Institute of Surgery and Transplantology, 03058 Kyiv, Ukraine;
| | - Marius Brunner
- Department of Gastroenterology, Endocrinology and Gastrointestinal Oncology, University Medical Center, 37075 Goettingen, Germany;
| | - Maximilian Kordes
- Department of Upper Abdominal Diseases, Karolinska University Hospital, 14186 Stockholm, Sweden;
- Department of Clinical Science, Intervention and Technology (CLINTEC), Karolinska Institutet, 17177 Stockholm, Sweden
| | - Stina Lindblad
- Department of Radiation Sciences, Sweden and Wallenberg Centre for Molecular Medicine, Umeå University, 90187 Umeå, Sweden;
| | - Rainer Christoph Miksch
- Department of General, Visceral and Transplantation Surgery, University Hospital, LMU Munich, 81377 Munich, Germany;
| | - Daniel Öhlund
- Department of Radiation Sciences, Sweden and Wallenberg Centre for Molecular Medicine, Umeå University, 90187 Umeå, Sweden;
| | - Ivonne Regel
- Department of Medicine II, University Hospital, LMU Munich, 81377 Munich, Germany
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